Bitmap.java revision 36bef0bf30d6bae48cf3837df351075ca4fce654
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.graphics; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcel; 208cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chenimport android.os.Parcelable; 212784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackbornimport android.util.DisplayMetrics; 22ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 238cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chenimport java.io.OutputStream; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.nio.Buffer; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.nio.ByteBuffer; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.nio.IntBuffer; 278cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chenimport java.nio.ShortBuffer; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic final class Bitmap implements Parcelable { 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that the bitmap was created for an unknown pixel density. 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see Bitmap#getDensity() 3411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see Bitmap#setDensity(int) 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public static final int DENSITY_NONE = 0; 3711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 38ce0537b80087a6225273040a987414b1dd081aa0Romain Guy /** 39ce0537b80087a6225273040a987414b1dd081aa0Romain Guy * Note: mNativeBitmap is used by FaceDetector_jni.cpp 40ce0537b80087a6225273040a987414b1dd081aa0Romain Guy * Don't change/rename without updating FaceDetector_jni.cpp 41ce0537b80087a6225273040a987414b1dd081aa0Romain Guy * 42ce0537b80087a6225273040a987414b1dd081aa0Romain Guy * @hide 43ce0537b80087a6225273040a987414b1dd081aa0Romain Guy */ 4436bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat public final long mNativeBitmap; 458cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 46e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy /** 47e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy * Backing buffer for the Bitmap. 480c20c3898a533b7b76f60827cb6ea02e17c5953dChris Craik * Made public for quick access from drawing methods -- do NOT modify 490c20c3898a533b7b76f60827cb6ea02e17c5953dChris Craik * from outside this class 500c20c3898a533b7b76f60827cb6ea02e17c5953dChris Craik * 510c20c3898a533b7b76f60827cb6ea02e17c5953dChris Craik * @hide 52e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy */ 533b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy @SuppressWarnings("UnusedDeclaration") // native code only 540c20c3898a533b7b76f60827cb6ea02e17c5953dChris Craik public byte[] mBuffer; 55e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 562361098da3b9d9c3eeed410dc72ba62c0e9177cfRomain Guy @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"}) // Keep to finalize native resources 57e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private final BitmapFinalizer mFinalizer; 58e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final boolean mIsMutable; 601abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik 611abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik /** 621abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Represents whether the Bitmap's content is expected to be pre-multiplied. 631abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Note that isPremultiplied() does not directly return this value, because 641abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * isPremultiplied() may never return true for a 565 Bitmap. 651abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 661abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * setPremultiplied() does directly set the value so that setConfig() and 671abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * setPremultiplied() aren't order dependent, despite being setters. 681abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik */ 691abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private boolean mIsPremultiplied; 708790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 718790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III /** 728790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * Whether the Bitmap's content is expected to have alpha. Note that hasAlpha() 738790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * does not directly return this value, because hasAlpha() may never return true 748790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * for a 565 Bitmap. 758790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * 768790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * Any time this or mIsPremultiplied is changed, both are passed to native so they 778790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * are not order dependent. 788790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III */ 798790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III private boolean mHasAlpha; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private byte[] mNinePatchChunk; // may be null 81ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani private int[] mLayoutBounds; // may be null 821abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private int mWidth; 831abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private int mHeight; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mRecycled; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Package-scoped for fast access. 87dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int mDensity = getDefaultDensity(); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn private static volatile Matrix sScaleMatrix; 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn private static volatile int sDefaultDensity = -1; 9202890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 9396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn /** 9496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * For backwards compatibility, allows the app layer to change the default 9596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density when running old apps. 9696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @hide 9796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn */ 9896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn public static void setDefaultDensity(int density) { 9996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = density; 10096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 1013849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 1023849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy static int getDefaultDensity() { 10396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (sDefaultDensity >= 0) { 10496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 10596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 1061f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy //noinspection deprecation 10796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = DisplayMetrics.DENSITY_DEVICE; 10896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 10996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 110dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1129f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Private constructor that must received an already allocated native bitmap 1139f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * int (pointer). 114ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 1159f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik @SuppressWarnings({"UnusedDeclaration"}) // called from JNI 11636bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat Bitmap(long nativeBitmap, byte[] buffer, int width, int height, int density, 1171abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik boolean isMutable, boolean isPremultiplied, 1181abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik byte[] ninePatchChunk, int[] layoutBounds) { 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nativeBitmap == 0) { 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("internal error: native bitmap is 0"); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1228cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1231abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mWidth = width; 1241abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mHeight = height; 1251abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsMutable = isMutable; 1261abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = isPremultiplied; 127e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mBuffer = buffer; 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we delete this in our finalizer 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNativeBitmap = nativeBitmap; 130e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mFinalizer = new BitmapFinalizer(nativeBitmap); 131e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = ninePatchChunk; 133ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = layoutBounds; 134de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (density >= 0) { 135de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn mDensity = density; 136de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn } 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1401abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Native bitmap has been reconfigured, so set premult and cached 1411abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * width/height values 1429f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik */ 1439f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik @SuppressWarnings({"UnusedDeclaration"}) // called from JNI 1441abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik void reinit(int width, int height, boolean isPremultiplied) { 1451abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mWidth = width; 1461abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mHeight = height; 1471abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = isPremultiplied; 1489f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik } 1499f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik 1509f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik /** 15111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Returns the density for this bitmap.</p> 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The default density is the same density as the current display, 15496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * unless the current application does not support different screen 15596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * densities in which case it is 15696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * {@link android.util.DisplayMetrics#DENSITY_DEFAULT}. Note that 15796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * compatibility mode is determined by the application that was initially 15896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * loaded into a process -- applications that share the same process should 15996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * all have the same compatibility, or ensure they explicitly set the 16096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density of their bitmaps appropriately.</p> 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @return A scaling factor of the default density or {@link #DENSITY_NONE} 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if the scaling factor is unknown. 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #setDensity(int) 166a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 16711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 16811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getDensity() { 17111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return mDensity; 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Specifies the density for this bitmap. When the bitmap is 17611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * drawn to a Canvas that also has a density, it will be scaled 17711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * appropriately.</p> 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param density The density scaling factor to use with this bitmap or 18011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * {@link #DENSITY_NONE} if the density is unknown. 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #getDensity() 183a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 18411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 18511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public void setDensity(int density) { 18811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn mDensity = density; 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 190c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 191c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 192c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Modifies the bitmap to have a specified width, height, and {@link 193c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * Config}, without affecting the underlying allocation backing the bitmap. 194c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * Bitmap pixel data is not re-initialized for the new configuration.</p> 195c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 196c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>This method can be used to avoid allocating a new bitmap, instead 197c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * reusing an existing bitmap's allocation for a new configuration of equal 198c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * or lesser size. If the Bitmap's allocation isn't large enough to support 199c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the new configuration, an IllegalArgumentException will be thrown and the 200c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * bitmap will not be modified.</p> 201c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 202c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>The result of {@link #getByteCount()} will reflect the new configuration, 203c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * while {@link #getAllocationByteCount()} will reflect that of the initial 204c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * configuration.</p> 205c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 206c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: This method should NOT be called on a bitmap currently used 207c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * by the view system. It does not make guarantees about how the underlying 208c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * pixel buffer is remapped to the new config, just that the allocation is 209c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * reused. Additionally, the view system does not account for bitmap 210c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * properties being modifying during use, e.g. while attached to 211c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * drawables.</p> 212c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 213c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 214c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 215c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 216c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 217c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void reconfigure(int width, int height, Config config) { 218c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik checkRecycled("Can't call reconfigure() on a recycled bitmap"); 219c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (width <= 0 || height <= 0) { 220c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik throw new IllegalArgumentException("width and height must be > 0"); 221c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 222c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (!isMutable()) { 2239c2cde0583d02ba7551877dbe7a5ecaee6defb56Chris Craik throw new IllegalStateException("only mutable bitmaps may be reconfigured"); 224c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 225c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (mBuffer == null) { 2261abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik throw new IllegalStateException("native-backed bitmaps may not be reconfigured"); 227c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 228c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 229c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik nativeReconfigure(mNativeBitmap, width, height, config.nativeInt, mBuffer.length); 230c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik mWidth = width; 231c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik mHeight = height; 232c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 233c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 234c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 235c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 236c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current height and config.</p> 237c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 238c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 239c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 240c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 241c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 242c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 243c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 244c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 245c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 246c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setWidth(int width) { 247c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(width, getHeight(), getConfig()); 248c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 249c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 250c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 251c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 252c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current width and config.</p> 253c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 254c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 255c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 256c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 257c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 258c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 259c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 260c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 261c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 262c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setHeight(int height) { 263c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(getWidth(), height, getConfig()); 264c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 265c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 266c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 267c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 268c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current height and width.</p> 269c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 270c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 271c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 272c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 273c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 274c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 275c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 276c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 277c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 278c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setConfig(Config config) { 279c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(getWidth(), getHeight(), config); 280c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 281c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the nine patch chunk. 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param chunk The definition of the nine patch 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setNinePatchChunk(byte[] chunk) { 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = chunk; 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2928cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 294ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * Sets the layout bounds as an array of left, top, right, bottom integers 29517471d730f20ee785c9c48a99eb331a40550612bRomain Guy * @param bounds the array containing the padding values 296ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * 297ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 298ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 299ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public void setLayoutBounds(int[] bounds) { 300ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = bounds; 301ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 302ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 303ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 304a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * Free the native object associated with this bitmap, and clear the 305a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * reference to the pixel data. This will not free the pixel data synchronously; 306a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * it simply allows it to be garbage collected if there are no other references. 307a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * The bitmap is marked as "dead", meaning it will throw an exception if 308a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * getPixels() or setPixels() is called, and will draw nothing. This operation 309a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * cannot be reversed, so it should only be called if you are sure there are no 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * further uses for the bitmap. This is an advanced call, and normally need 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not be called, since the normal GC process will free up this memory when 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * there are no more references to this bitmap. 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void recycle() { 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mRecycled) { 316547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase if (nativeRecycle(mNativeBitmap)) { 317547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // return value indicates whether native pixel object was actually recycled. 318547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // false indicates that it is still in use at the native level and these 319547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // objects should not be collected now. They will be collected later when the 320547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // Bitmap itself is collected. 321547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase mBuffer = null; 322547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase mNinePatchChunk = null; 323547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase } 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycled = true; 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if this bitmap has been recycled. If so, then it is an error 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to try to access its pixels, and the bitmap will not draw. 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the bitmap has been recycled 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isRecycled() { 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mRecycled; 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3378cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3390bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * Returns the generation ID of this bitmap. The generation ID changes 3400bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * whenever the bitmap is modified. This can be used as an efficient way to 3410bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * check if a bitmap has changed. 3420bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * 3430bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * @return The current generation ID for this bitmap. 3440bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy */ 3450bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy public int getGenerationId() { 3460bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy return nativeGenerationId(mNativeBitmap); 3470bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy } 3480bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy 3490bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy /** 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is called by methods that want to throw an exception if the bitmap 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * has already been recycled. 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkRecycled(String errorMessage) { 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mRecycled) { 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(errorMessage); 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3588cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that x and y are >= 0 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate to ensure is >= 0 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate to ensure is >= 0 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkXYSign(int x, int y) { 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x < 0) { 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be >= 0"); 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y < 0) { 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be >= 0"); 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that width and height are > 0 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width to ensure is > 0 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height to ensure is > 0 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkWidthHeight(int width, int height) { 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width <= 0) { 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be > 0"); 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height <= 0) { 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be > 0"); 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 389676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 390676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Possible bitmap configurations. A bitmap configuration describes 391676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * how pixels are stored. This affects the quality (color depth) as 392676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * well as the ability to display transparent/translucent colors. 393676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum Config { 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // these native values must match up with the enum in SkBitmap.h 396676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 397676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 398676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored as a single translucency (alpha) channel. 399676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This is very useful to efficiently store masks for instance. 400676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * No color information is stored. 401676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * With this configuration, each pixel requires 1 byte of memory. 402676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ALPHA_8 (2), 404676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 405676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 406676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes and only the RGB channels are 407676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * encoded: red is stored with 5 bits of precision (32 possible 408676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values), green is stored with 6 bits of precision (64 possible 409676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values) and blue is stored with 5 bits of precision. 410676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 411676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration can produce slight visual artifacts depending 412676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * on the configuration of the source. For instance, without 413676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * dithering, the result might show a greenish tint. To get better 414676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * results dithering should be applied. 415676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 416676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration may be useful when using opaque bitmaps 417676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * that do not require high color fidelity. 418676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RGB_565 (4), 420676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 421676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 422676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes. The three RGB color channels 423676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * and the alpha channel (translucency) are stored with a 4 bits 424676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * precision (16 possible values.) 425676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 426676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is mostly useful if the application needs 427676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * to store translucency information but also needs to save 428676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * memory. 429676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 430676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * It is recommended to use {@link #ARGB_8888} instead of this 431676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * configuration. 43225ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * 433e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * Note: as of {@link android.os.Build.VERSION_CODES#KITKAT}, 43425ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * any bitmap created with this configuration will be created 43525ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * using {@link #ARGB_8888} instead. 436676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 437676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * @deprecated Because of the poor quality of this configuration, 438676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * it is advised to use {@link #ARGB_8888} instead. 439676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 440676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @Deprecated 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ARGB_4444 (5), 442676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 443676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 444676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 4 bytes. Each channel (RGB and alpha 445676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * for translucency) is stored with 8 bits of precision (256 446676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * possible values.) 447676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 448676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is very flexible and offers the best 449676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * quality. It should be used whenever possible. 450676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ARGB_8888 (6); 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 453676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy final int nativeInt; 454676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 455676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @SuppressWarnings({"deprecation"}) 456676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy private static Config sConfigs[] = { 457676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy null, null, ALPHA_8, null, RGB_565, ARGB_4444, ARGB_8888 458676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy }; 459676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Config(int ni) { 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = ni; 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4638cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 464676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy static Config nativeToConfig(int ni) { 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sConfigs[ni]; 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4688cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4703849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the bitmap's pixels into the specified buffer (allocated by the 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * caller). An exception is thrown if the buffer is not large enough to 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * hold all of the pixels (taking into account the number of bytes per 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixel) or if the Buffer subclass is not one of the support types 4743849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (ByteBuffer, ShortBuffer, IntBuffer).</p> 4753849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>The content of the bitmap is copied into the buffer as-is. This means 4763849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * that if this bitmap stores its pixels pre-multiplied 4773849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (see {@link #isPremultiplied()}, the values in the buffer will also be 4783849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * pre-multiplied.</p> 4791f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * <p>After this method returns, the current position of the buffer is 4801f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * updated: the position is incremented by the number of elements written 4811f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * in the buffer.</p> 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsToBuffer(Buffer dst) { 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = dst.remaining(); 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dst instanceof ByteBuffer) { 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof ShortBuffer) { 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof IntBuffer) { 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4958cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long bufferSize = (long)elements << shift; 497f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long pixelSize = getByteCount(); 4988cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferSize < pixelSize) { 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5028cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsToBuffer(mNativeBitmap, dst); 5048cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // now update the buffer's position 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = dst.position(); 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position += pixelSize >> shift; 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dst.position(position); 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5123849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the pixels from the buffer, beginning at the current position, 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * overwriting the bitmap's pixels. The data in the buffer is not changed 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in any way (unlike setPixels(), which converts from unpremultipled 32bit 5153849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * to whatever the bitmap's native format is.</p> 5161f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * <p>After this method returns, the current position of the buffer is 5171f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * updated: the position is incremented by the number of elements read from 5181f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * the buffer. If you need to read the bitmap from the buffer again you must 5191f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * first rewind the buffer.</p> 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsFromBuffer(Buffer src) { 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("copyPixelsFromBuffer called on recycled bitmap"); 5238cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = src.remaining(); 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (src instanceof ByteBuffer) { 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof ShortBuffer) { 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof IntBuffer) { 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5358cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5363849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy long bufferBytes = (long) elements << shift; 537f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long bitmapBytes = getByteCount(); 5388cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferBytes < bitmapBytes) { 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5428cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsFromBuffer(mNativeBitmap, src); 54455adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen 54555adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen // now update the buffer's position 54655adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen int position = src.position(); 54755adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen position += bitmapBytes >> shift; 54855adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen src.position(position); 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5508cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Tries to make a new bitmap based on the dimensions of this bitmap, 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setting the new bitmap's config to the one specified, and then copying 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this bitmap's pixels into the new bitmap. If the conversion is not 55596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * supported, or the allocator fails, then this returns NULL. The returned 55696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * bitmap initially has the same density as the original. 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The desired config for the resulting bitmap 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isMutable True if the resulting bitmap should be mutable (i.e. 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * its pixels can be modified) 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the new bitmap, or null if the copy could not be made. 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap copy(Config config, boolean isMutable) { 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't copy a recycled bitmap"); 56596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn Bitmap b = nativeCopy(mNativeBitmap, config.nativeInt, isMutable); 56696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (b != null) { 5678790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III b.setAlphaAndPremultiplied(mHasAlpha, mIsPremultiplied); 56896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn b.mDensity = mDensity; 56996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 57096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return b; 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 57302d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick /** 574f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * Creates a new bitmap, scaled from an existing bitmap, when possible. If the 575f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * specified width and height are the same as the current width and height of 5769f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * the source bitmap, the source bitmap is returned and no new bitmap is 577f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * created. 57802d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * 57902d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param src The source bitmap. 58002d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstWidth The new bitmap's desired width. 58102d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstHeight The new bitmap's desired height. 58202d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param filter true if the source should be filtered. 583f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return The new scaled bitmap or the source bitmap if no scaling is required. 584790552b240c05d58407f7c14acba656b2e85c523Romain Guy * @throws IllegalArgumentException if width is <= 0, or height is <= 0 58502d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick */ 586f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy public static Bitmap createScaledBitmap(Bitmap src, int dstWidth, int dstHeight, 587f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy boolean filter) { 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m; 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // small pool of just 1 matrix 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = sScaleMatrix; 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = null; 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null) { 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = new Matrix(); 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5988cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = src.getWidth(); 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = src.getHeight(); 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sx = dstWidth / (float)width; 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sy = dstHeight / (float)height; 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.setScale(sx, sy); 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap b = Bitmap.createBitmap(src, 0, 0, width, height, m, filter); 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do we need to check for null? why not just assign everytime? 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sScaleMatrix == null) { 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = m; 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6138cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen return b; 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6158cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the source bitmap. The new bitmap may 61896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * be the same object as source, or a copy may have been made. It is 61996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap src) { 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(src, 0, 0, src.getWidth(), src.getHeight()); 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the specified subset of the source 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bitmap. The new bitmap may be the same object as source, or a copy may 628f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * have been made. It is initialized with the same density as the original 629f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * bitmap. 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 636f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return A copy of a subset of the source bitmap or the source bitmap itself. 637790552b240c05d58407f7c14acba656b2e85c523Romain Guy * @throws IllegalArgumentException if the x, y, width, height values are 638790552b240c05d58407f7c14acba656b2e85c523Romain Guy * outside of the dimensions of the source bitmap, or width is <= 0, 639790552b240c05d58407f7c14acba656b2e85c523Romain Guy * or height is <= 0 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height) { 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(source, x, y, width, height, null, false); 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6448cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from subset of the source bitmap, 647f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * transformed by the optional matrix. The new bitmap may be the 648f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same object as source, or a copy may have been made. It is 64996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 650f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * 651f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * If the source bitmap is immutable and the requested subset is the 652f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same as the source bitmap itself, then the source bitmap is 653f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * returned and no new bitmap is created. 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 66060b88edea7132ddce90f2dced07c6706f1502270Ken Shirriff * @param m Optional matrix to be applied to the pixels 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param filter true if the source should be filtered. 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Only applies if the matrix contains more than just 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * translation. 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A bitmap that represents the specified subset of source 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the x, y, width, height values are 666790552b240c05d58407f7c14acba656b2e85c523Romain Guy * outside of the dimensions of the source bitmap, or width is <= 0, 667790552b240c05d58407f7c14acba656b2e85c523Romain Guy * or height is <= 0 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m, boolean filter) { 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > source.getWidth()) { 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x + width must be <= bitmap.width()"); 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > source.getHeight()) { 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y + height must be <= bitmap.height()"); 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // check if we can just return our argument unchanged 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!source.isMutable() && x == 0 && y == 0 && width == source.getWidth() && 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height == source.getHeight() && (m == null || m.isIdentity())) { 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return source; 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6868cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int neww = width; 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newh = height; 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Canvas canvas = new Canvas(); 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bitmap; 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint paint; 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect srcR = new Rect(x, y, x + width, y + height); 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF dstR = new RectF(0, 0, width, height); 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 696feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy Config newConfig = Config.ARGB_8888; 697feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy final Config config = source.getConfig(); 698feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy // GIF files generate null configs, assume ARGB_8888 699feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy if (config != null) { 700feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy switch (config) { 701feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case RGB_565: 702feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.RGB_565; 703feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 704feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ALPHA_8: 705feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ALPHA_8; 706feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 707676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy //noinspection deprecation 708feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_4444: 709feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_8888: 710feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy default: 711feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ARGB_8888; 712feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 713feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 714feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 715d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null || m.isIdentity()) { 717d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, newConfig, source.hasAlpha()); 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = null; // not needed 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 720d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy final boolean transformed = !m.rectStaysRect(); 721d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF deviceR = new RectF(); 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.mapRect(deviceR, dstR); 724d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project neww = Math.round(deviceR.width()); 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newh = Math.round(deviceR.height()); 727d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 728d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, transformed ? Config.ARGB_8888 : newConfig, 729d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy transformed || source.hasAlpha()); 730d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.translate(-deviceR.left, -deviceR.top); 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.concat(m); 733d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = new Paint(); 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setFilterBitmap(filter); 736d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (transformed) { 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setAntiAlias(true); 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7408790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The new bitmap was created from a known bitmap source so assume that 74211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // they use the same density 74311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn bitmap.mDensity = source.mDensity; 7448790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III bitmap.setAlphaAndPremultiplied(source.mHasAlpha, source.mIsPremultiplied); 7458790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 74696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.setBitmap(bitmap); 74796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.drawBitmap(source, srcR, dstR, paint); 7486311d0a079702b29984c0d31937345be105e1a5eDianne Hackborn canvas.setBitmap(null); 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bitmap; 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7528cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 75496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 75596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int width, int height, Config config) { 763d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy return createBitmap(width, height, config, true); 764d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 765d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 766d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy /** 767d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * Returns a mutable bitmap with the specified width and height. Its 768dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 769dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 770dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 771dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 772dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 773dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 774dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. 775dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0 776dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 777dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int width, 778dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int height, Config config) { 779dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(display, width, height, config, true); 780dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 781dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 782dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 783dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 784d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * initial density is as per {@link #getDensity}. 785d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 786d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param width The width of the bitmap 787d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param height The height of the bitmap 788d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param config The bitmap config to create. 789d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 790d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * bitmap as opaque. Doing so will clear the bitmap in black 791d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * instead of transparent. 792d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 793d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @throws IllegalArgumentException if the width or height are <= 0 794d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy */ 795d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy private static Bitmap createBitmap(int width, int height, Config config, boolean hasAlpha) { 796dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, width, height, config, hasAlpha); 797dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 798dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 799dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 800dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 801dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 802dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 803dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 804dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 805dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 806dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 807dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. 808dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 809dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bitmap as opaque. Doing so will clear the bitmap in black 810dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * instead of transparent. 811dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 812dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0 813dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 814dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn private static Bitmap createBitmap(DisplayMetrics display, int width, int height, 815dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn Config config, boolean hasAlpha) { 816e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 817e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 818e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreate(null, 0, width, width, height, config.nativeInt, true); 820dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (display != null) { 821dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn bm.mDensity = display.densityDpi; 822dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 8238790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III bm.setHasAlpha(hasAlpha); 824d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (config == Config.ARGB_8888 && !hasAlpha) { 8251373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate nativeErase(bm.mNativeBitmap, 0xff000000); 826d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 8273b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // No need to initialize the bitmap to zeroes with other configs; 8283b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // it is backed by a VM byte array which is by definition preinitialized 8293b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // to all zeroes. 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8328cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 83596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 83696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset Number of values to skip before the first color in the 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * array of colors. 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride Number of colors in the array between rows (must be >= 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * width or <= -width). 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int offset, int stride, 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, int height, Config config) { 853dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, colors, offset, stride, width, height, config); 854dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 855dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 856dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 857dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a immutable bitmap with the specified width and height, with each 858dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 859dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 860dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 861dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 862dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 863dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param colors Array of {@link Color} used to initialize the pixels. 864dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param offset Number of values to skip before the first color in the 865dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * array of colors. 866dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param stride Number of colors in the array between rows (must be >= 867dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * width or <= -width). 868dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 869dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 870dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. If the config does not 871dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * support per-pixel alpha (e.g. RGB_565), then the alpha 872dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bytes in the colors[] will be ignored (assumed to be FF) 873dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0, or if 874dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * the color array's length is less than the number of pixels. 875dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 876dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int colors[], 877dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int offset, int stride, int width, int height, Config config) { 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = colors.length; 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) || lastScanline < 0 || 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (lastScanline + width > length)) { 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 889e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 890e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 891e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 892dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn Bitmap bm = nativeCreate(colors, offset, stride, width, height, 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project config.nativeInt, false); 894dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (display != null) { 895dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn bm.mDensity = display.densityDpi; 896dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 8978790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III bm.mHasAlpha = true; 898dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return bm; 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 90396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 90496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This array must be at least as large as width * height. 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int width, int height, Config config) { 917dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, colors, 0, width, width, height, config); 918dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 919dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 920dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 921dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a immutable bitmap with the specified width and height, with each 922dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 923dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 924dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 925dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 926dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 927dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param colors Array of {@link Color} used to initialize the pixels. 928dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * This array must be at least as large as width * height. 929dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 930dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 931dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. If the config does not 932dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * support per-pixel alpha (e.g. RGB_565), then the alpha 933dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bytes in the colors[] will be ignored (assumed to be FF) 934dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0, or if 935dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * the color array's length is less than the number of pixels. 936dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 937dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int colors[], 938dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int width, int height, Config config) { 939dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(display, colors, 0, width, width, height, config); 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an optional array of private data, used by the UI system for 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * some bitmaps. Not intended to be called by applications. 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public byte[] getNinePatchChunk() { 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNinePatchChunk; 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 951ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 952ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @return the layout padding [left, right, top, bottom] 953ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 954ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public int[] getLayoutBounds() { 955ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani return mLayoutBounds; 956ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 957ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 958ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Specifies the known formats a bitmap can be compressed into 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum CompressFormat { 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEG (0), 9632305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora PNG (1), 9642305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora WEBP (2); 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CompressFormat(int nativeInt) { 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = nativeInt; 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nativeInt; 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Number of bytes of temp storage we use for communicating between the 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * native compressor and the java OutputStream. 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final static int WORKING_COMPRESS_STORAGE = 4096; 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write a compressed version of the bitmap to the specified outputstream. 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this returns true, the bitmap can be reconstructed by passing a 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * corresponding inputstream to BitmapFactory.decodeStream(). Note: not 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * all Formats support all bitmap configs directly, so it is possible that 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the returned bitmap from BitmapFactory could be in a different bitdepth, 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and/or may have lost per-pixel alpha (e.g. JPEG only supports opaque 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixels). 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param format The format of the compressed image 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param quality Hint to the compressor, 0-100. 0 meaning compress for 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * small size, 100 meaning compress for max quality. Some 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * formats, like PNG which is lossless, will ignore the 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * quality setting 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stream The outputstream to write the compressed data. 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if successfully compressed to the specified stream. 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean compress(CompressFormat format, int quality, OutputStream stream) { 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't compress a recycled bitmap"); 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do explicit check before calling the native method 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stream == null) { 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new NullPointerException(); 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (quality < 0 || quality > 100) { 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("quality must be 0..100"); 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeCompress(mNativeBitmap, format.nativeInt, quality, 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project stream, new byte[WORKING_COMPRESS_STORAGE]); 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10078cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1009ff236f5fc1a088b1210d37a67b0e88b06c0fbdb2Newton Allen * Returns true if the bitmap is marked as mutable (i.e. can be drawn into) 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isMutable() { 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mIsMutable; 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10153849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy /** 10163849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Indicates whether pixels stored in this bitmaps are stored pre-multiplied. 10173849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * When a pixel is pre-multiplied, the RGB components have been multiplied by 10183849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * the alpha component. For instance, if the original color is a 50% 10193849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * translucent red <code>(128, 255, 0, 0)</code>, the pre-multiplied form is 10203849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <code>(128, 128, 0, 0)</code>.</p> 10213849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 10223849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>This method always returns false if {@link #getConfig()} is 10234ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * {@link Bitmap.Config#RGB_565}.</p> 10244ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * 10254ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * <p>This method only returns true if {@link #hasAlpha()} returns true. 10264ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * A bitmap with no alpha channel can be used both as a pre-multiplied and 10274ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * as a non pre-multiplied bitmap.</p> 10281abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10291abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>Only pre-multiplied bitmaps may be drawn by the view system or 10301abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * {@link Canvas}. If a non-pre-multiplied bitmap with an alpha channel is 10311abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * drawn to a Canvas, a RuntimeException will be thrown.</p> 10321abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10333849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @return true if the underlying pixels have been pre-multiplied, false 10343849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * otherwise 10351abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10361abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see Bitmap#setPremultiplied(boolean) 10371abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see BitmapFactory.Options#inPremultiplied 10383849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy */ 10393849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy public final boolean isPremultiplied() { 10401abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mIsPremultiplied && getConfig() != Config.RGB_565 && hasAlpha(); 10411abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik } 10421abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik 10431abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik /** 10441abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Sets whether the bitmap should treat its data as pre-multiplied. 10451abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10461abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>Bitmaps are always treated as pre-multiplied by the view system and 10471abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * {@link Canvas} for performance reasons. Storing un-pre-multiplied data in 10481abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * a Bitmap (through {@link #setPixel}, {@link #setPixels}, or {@link 10491abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * BitmapFactory.Options#inPremultiplied BitmapFactory.Options.inPremultiplied}) 10501abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * can lead to incorrect blending if drawn by the framework.</p> 10511abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10521abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>This method will not affect the behavior of a bitmap without an alpha 10531abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * channel, or if {@link #hasAlpha()} returns false.</p> 10541abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10552bc49ca96eb786f66dc2b9573e1f09bdb2d82d5eLeon Scroggins III * <p>Calling createBitmap() or createScaledBitmap() with a source 10568790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * Bitmap whose colors are not pre-multiplied may result in a RuntimeException, 10578790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * since those functions require drawing the source, which is not supported for 10588790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * un-pre-multiplied Bitmaps.</p> 10598790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * 10601abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see Bitmap#isPremultiplied() 10611abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see BitmapFactory.Options#inPremultiplied 10621abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik */ 10631abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik public final void setPremultiplied(boolean premultiplied) { 10641abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = premultiplied; 10658790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III nativeSetAlphaAndPremultiplied(mNativeBitmap, mHasAlpha, premultiplied); 10668790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III } 10678790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 10688790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III /** Helper function to set both alpha and premultiplied. **/ 10698790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III private final void setAlphaAndPremultiplied(boolean hasAlpha, boolean premultiplied) { 10708790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III mHasAlpha = hasAlpha; 10718790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III mIsPremultiplied = premultiplied; 10728790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III nativeSetAlphaAndPremultiplied(mNativeBitmap, hasAlpha, premultiplied); 10733849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy } 10743849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's width */ 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getWidth() { 10771abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mWidth; 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's height */ 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getHeight() { 10821abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mHeight; 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10848cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 108611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 108711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10892784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledWidth(Canvas canvas) { 109011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, canvas.mDensity); 10912784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 10922784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 10932784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 109411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 109511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 10962784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 10972784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledHeight(Canvas canvas) { 109811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, canvas.mDensity); 109911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 110011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 110111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 110211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 110311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 110411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 110511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(DisplayMetrics metrics) { 110611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, metrics.densityDpi); 110711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 110811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 110911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 111011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 111111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 111211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 111311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(DisplayMetrics metrics) { 111411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, metrics.densityDpi); 11152784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 11162784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 11172784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 11182784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * Convenience method that returns the width of this bitmap divided 11192784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * by the density scale factor. 11202784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * 112111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 11222784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * @return The scaled width of this bitmap, according to the density scale factor. 11232784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 112411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(int targetDensity) { 112511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, targetDensity); 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Convenience method that returns the height of this bitmap divided 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by the density scale factor. 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 113211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The scaled height of this bitmap, according to the density scale factor. 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 113511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(int targetDensity) { 113611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, targetDensity); 113711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 113811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 113911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 114011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @hide 114111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 114211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn static public int scaleFromDensity(int size, int sdensity, int tdensity) { 11430b68477f8287fe5ddac1beb1c9d0811ded034dadRomain Guy if (sdensity == DENSITY_NONE || tdensity == DENSITY_NONE || sdensity == tdensity) { 114411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return size; 11452784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 114611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 114711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Scale by tdensity / sdensity, rounding up. 1148366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return ((size * tdensity) + (sdensity >> 1)) / sdensity; 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 115011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return the number of bytes between rows in the bitmap's pixels. Note that 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this refers to the pixels as stored natively by the bitmap. If you call 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * getPixels() or setPixels(), then the pixels are uniformly treated as 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32bit values, packed according to the Color class. 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1157e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * <p>As of {@link android.os.Build.VERSION_CODES#KITKAT}, this method 11589f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * should not be used to calculate the memory usage of the bitmap. Instead, 11599f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * see {@link #getAllocationByteCount()}. 11609f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return number of bytes between rows of the native bitmap pixels. 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getRowBytes() { 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeRowBytes(mNativeBitmap); 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11668cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11689f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Returns the minimum number of bytes that can be used to store this bitmap's pixels. 11699f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 1170e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * <p>As of {@link android.os.Build.VERSION_CODES#KITKAT}, the result of this method can 11719f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * no longer be used to determine memory usage of a bitmap. See {@link 1172c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #getAllocationByteCount()}.</p> 1173f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson */ 1174f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson public final int getByteCount() { 1175f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson // int result permits bitmaps up to 46,340 x 46,340 1176f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson return getRowBytes() * getHeight(); 1177f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson } 1178f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson 1179f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson /** 11809f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Returns the size of the allocated memory used to store this bitmap's pixels. 11819f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 11829f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * <p>This can be larger than the result of {@link #getByteCount()} if a bitmap is reused to 1183c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * decode other bitmaps of smaller size, or by manual reconfiguration. See {@link 1184c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #reconfigure(int, int, Config)}, {@link #setWidth(int)}, {@link #setHeight(int)}, {@link 1185c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #setConfig(Bitmap.Config)}, and {@link BitmapFactory.Options#inBitmap 1186c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * BitmapFactory.Options.inBitmap}. If a bitmap is not modified in this way, this value will be 1187c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the same as that returned by {@link #getByteCount()}.</p> 1188c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 1189c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>This value will not change over the lifetime of a Bitmap.</p> 11909f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 1191c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 11929f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik */ 11939f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik public final int getAllocationByteCount() { 1194222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik if (mBuffer == null) { 1195222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik // native backed bitmaps don't support reconfiguration, 1196222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik // so alloc size is always content size 1197222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik return getByteCount(); 1198222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik } 11999f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik return mBuffer.length; 12009f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik } 12019f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik 12029f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik /** 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If the bitmap's internal config is in one of the public formats, return 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that config, otherwise return null. 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Config getConfig() { 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Config.nativeToConfig(nativeConfig(mNativeBitmap)); 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1210a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** Returns true if the bitmap's config supports per-pixel alpha, and 1211a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * if the pixels may contain non-opaque alpha values. For some configs, 1212a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * this is always false (e.g. RGB_565), since they do not support per-pixel 1213a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * alpha. However, for configs that do, the bitmap may be flagged to be 1214a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * known that all of its pixels are opaque. In this case hasAlpha() will 1215a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * also return false. If a config such as ARGB_8888 is not so flagged, 1216a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * it will return true by default. 1217a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean hasAlpha() { 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeHasAlpha(mNativeBitmap); 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1223a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * Tell the bitmap if all of the pixels are known to be opaque (false) 1224a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * or if some of the pixels may contain non-opaque alpha values (true). 1225366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * Note, for some configs (e.g. RGB_565) this call is ignored, since it 1226366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * does not support per-pixel alpha values. 1227a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * 1228a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * This is meant as a drawing hint, as in some cases a bitmap that is known 1229a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * to be opaque can take a faster drawing case than one that may have 1230a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * non-opaque per-pixel alpha values. 1231a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 1232a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed public void setHasAlpha(boolean hasAlpha) { 12338790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III mHasAlpha = hasAlpha; 12348790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III nativeSetAlphaAndPremultiplied(mNativeBitmap, hasAlpha, mIsPremultiplied); 1235a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed } 1236a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed 1237a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** 1238713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Indicates whether the renderer responsible for drawing this 1239713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * bitmap should attempt to use mipmaps when this bitmap is drawn 1240713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * scaled down. 1241713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1242713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * If you know that you are going to draw this bitmap at less than 1243713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 50% of its original size, you may be able to obtain a higher 1244713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * quality 1245713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1246713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * This property is only a suggestion that can be ignored by the 1247713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * renderer. It is not guaranteed to have any effect. 1248713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1249713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @return true if the renderer should attempt to use mipmaps, 1250713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * false otherwise 1251713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1252713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @see #setHasMipMap(boolean) 1253713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy */ 1254713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy public final boolean hasMipMap() { 1255713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy return nativeHasMipMap(mNativeBitmap); 1256713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy } 1257713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy 1258713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy /** 1259713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Set a hint for the renderer responsible for drawing this bitmap 1260713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * indicating that it should attempt to use mipmaps when this bitmap 1261713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * is drawn scaled down. 1262713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1263713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * If you know that you are going to draw this bitmap at less than 1264713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 50% of its original size, you may be able to obtain a higher 1265713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * quality by turning this property on. 1266713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1267713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Note that if the renderer respects this hint it might have to 1268713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * allocate extra memory to hold the mipmap levels for this bitmap. 1269713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1270713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * This property is only a suggestion that can be ignored by the 1271713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * renderer. It is not guaranteed to have any effect. 1272713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1273713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @param hasMipMap indicates whether the renderer should attempt 1274713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * to use mipmaps 1275713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1276713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @see #hasMipMap() 1277713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy */ 1278713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy public final void setHasMipMap(boolean hasMipMap) { 1279713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy nativeSetHasMipMap(mNativeBitmap, hasMipMap); 1280713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy } 1281713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy 1282713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy /** 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the bitmap's pixels with the specified {@link Color}. 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable. 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void eraseColor(int c) { 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't erase a recycled bitmap"); 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException("cannot erase immutable bitmaps"); 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeErase(mNativeBitmap, c); 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the {@link Color} at the specified location. Throws an exception 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if x or y are out of bounds (negative or >= to the width or height 12983849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * respectively). The returned color is a non-premultiplied ARGB value. 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate (0...width-1) of the pixel to return 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate (0...height-1) of the pixel to return 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The argb {@link Color} at the specified coordinate 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y exceed the bitmap's bounds 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getPixel(int x, int y) { 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixel() on a recycled bitmap"); 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 13081abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return nativeGetPixel(mNativeBitmap, x, y, mIsPremultiplied); 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13108cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns in pixels[] a copy of the data in the bitmap. Each value is 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a packed int representing a {@link Color}. The stride parameter allows 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the caller to allow for gaps in the returned pixels array between 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows. For normal packed results, just pass width for the stride value. 13163849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * The returned colors are non-premultiplied ARGB values. 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The array to receive the bitmap's colors 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The first index to write into pixels[] 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of entries in pixels[] to skip between 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows (must be >= bitmap's width). Can be negative. 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to read from 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to read from 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels to read from each row 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to read 13283849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height exceed the 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds of the bitmap, or if abs(stride) < width. 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void getPixels(int[] pixels, int offset, int stride, 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int x, int y, int width, int height) { 13369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixels() on a recycled bitmap"); 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeGetPixels(mNativeBitmap, pixels, offset, stride, 13421abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik x, y, width, height, mIsPremultiplied); 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13448cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixel() 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixel() 13483849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate of the pixel 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate of the pixel 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelAccess(int x, int y) { 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x >= getWidth()) { 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be < bitmap.width()"); 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y >= getHeight()) { 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be < bitmap.height()"); 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixels() 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixels() 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x left edge of the area of pixels to access 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y top edge of the area of pixels to access 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width of the area of pixels to access 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height of the area of pixels to access 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset offset into pixels[] array 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride number of elements in pixels[] between each logical row 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels array to hold the area of pixels being accessed 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelsAccess(int x, int y, int width, int height, 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset, int stride, int pixels[]) { 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width < 0) { 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be >= 0"); 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height < 0) { 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be >= 0"); 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > getWidth()) { 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "x + width must be <= bitmap.width()"); 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > getHeight()) { 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "y + height must be <= bitmap.height()"); 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = pixels.length; 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || lastScanline < 0 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (lastScanline + width > length)) { 13999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14028cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14043849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Write the specified {@link Color} into the bitmap (assuming it is 14053849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * mutable) at the x,y coordinate. The color must be a 14063849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * non-premultiplied ARGB value.</p> 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the pixel to replace (0...width-1) 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the pixel to replace (0...height-1) 14103849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @param color The ARGB color to write into the bitmap 14113849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y are outside of the bitmap's 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds. 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixel(int x, int y, int color) { 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixel() on a recycled bitmap"); 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 14221abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik nativeSetPixel(mNativeBitmap, x, y, color, mIsPremultiplied); 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14248cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14263849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Replace pixels in the bitmap with the colors in the array. Each element 14273849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * in the array is a packed int prepresenting a non-premultiplied ARGB 14283849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * {@link Color}.</p> 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The colors to write to the bitmap 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The index of the first color to read from pixels[] 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of colors in pixels[] to skip between rows. 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Normally this value will be the same as the width of 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap, but it can be larger (or negative). 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to write to in 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to write to in 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of colors to copy from pixels[] per row 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to write to the bitmap 14413849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height are outside of 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap's bounds. 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixels(int[] pixels, int offset, int stride, 14493849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy int x, int y, int width, int height) { 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixels() on a recycled bitmap"); 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeSetPixels(mNativeBitmap, pixels, offset, stride, 14591abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik x, y, width, height, mIsPremultiplied); 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14618cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final Parcelable.Creator<Bitmap> CREATOR 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new Parcelable.Creator<Bitmap>() { 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Rebuilds a bitmap previously stored with writeToParcel(). 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to read the bitmap from 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return a new bitmap created from the data in the parcel 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap createFromParcel(Parcel p) { 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreateFromParcel(p); 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to unparcel Bitmap"); 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap[] newArray(int size) { 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new Bitmap[size]; 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * No special parcel contents. 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int describeContents() { 1486b6377170960d40e66858d8b4d335a95eac773762Bart Sears return 0; 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write the bitmap and its pixels to the parcel. The bitmap can be 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rebuilt from the parcel by calling CREATOR.createFromParcel(). 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to write the bitmap data into 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel p, int flags) { 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't parcel a recycled bitmap"); 1496de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (!nativeWriteToParcel(mNativeBitmap, mIsMutable, mDensity, p)) { 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("native writeToParcel failed"); 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This may be drawn with Canvas.drawBitmap(), where the color(s) will be 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * taken from the paint that is passed to the draw call. 15059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the alpha channel of the original bitmap. 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha() { 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return extractAlpha(null, null); 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15118cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * These values may be affected by the optional Paint parameter, which 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can contain its own alpha, and may also contain a MaskFilter which 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * could change the actual dimensions of the resulting bitmap (e.g. 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a blur maskfilter might enlarge the resulting bitmap). If offsetXY 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is not null, it returns the amount to offset the returned bitmap so 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that it will logically align with the original. For example, if the 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint contains a blur of radius 2, then offsetXY[] would contains 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * -2, -2, so that drawing the alpha bitmap offset by (-2, -2) and then 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawing the original would result in the blur visually aligning with 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the original. 152496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 152596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The initial density of the returned bitmap is the same as the original's. 152696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param paint Optional paint used to modify the alpha values in the 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * resulting bitmap. Pass null for default behavior. 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offsetXY Optional array that returns the X (index 0) and Y 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (index 1) offset needed to position the returned bitmap 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * so that it visually lines up with the original. 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the (optionally modified by paint) alpha 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * channel of the original bitmap. This may be drawn with 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Canvas.drawBitmap(), where the color(s) will be taken from the 15359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint that is passed to the draw call. 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha(Paint paint, int[] offsetXY) { 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't extractAlpha on a recycled bitmap"); 153936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat long nativePaint = paint != null ? paint.mNativePaint : 0; 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeExtractAlpha(mNativeBitmap, nativePaint, offsetXY); 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to extractAlpha on Bitmap"); 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 154496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn bm.mDensity = mDensity; 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15488cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen /** 154976d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * Given another bitmap, return true if it has the same dimensions, config, 155076d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * and pixel data as this bitmap. If any of those differ, return false. 155176d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * If other is null, return false. 155276d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed */ 155376d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed public boolean sameAs(Bitmap other) { 1554366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return this == other || (other != null && nativeSameAs(mNativeBitmap, other.mNativeBitmap)); 155576d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed } 155676d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed 155776d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed /** 15588cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * Rebuilds any caches associated with the bitmap that are used for 15598cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * drawing it. In the case of purgeable bitmaps, this call will attempt to 15608cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * ensure that the pixels have been decoded. 15618cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * If this is called on more than one bitmap in sequence, the priority is 15628cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * given in LRU order (i.e. the last bitmap called will be given highest 15638cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * priority). 15648cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * 15658cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * For bitmaps with no associated caches, this call is effectively a no-op, 15668cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * and therefore is harmless. 15678cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen */ 15688cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen public void prepareToDraw() { 15698cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen nativePrepareToDraw(mNativeBitmap); 15708cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen } 15718cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1572e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private static class BitmapFinalizer { 157336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private final long mNativeBitmap; 157402890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 157536bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat BitmapFinalizer(long nativeBitmap) { 1576e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mNativeBitmap = nativeBitmap; 157702890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy } 157802890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 157902890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy @Override 1580e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy public void finalize() { 1581366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy try { 1582366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy super.finalize(); 1583366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } catch (Throwable t) { 1584366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy // Ignore 1585366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } finally { 1586366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy nativeDestructor(mNativeBitmap); 1587366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15908cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //////////// native methods 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreate(int[] colors, int offset, 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int stride, int width, int height, 1595c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik int nativeConfig, boolean mutable); 159636bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native Bitmap nativeCopy(long nativeSrcBitmap, int nativeConfig, 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable); 159836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeDestructor(long nativeBitmap); 159936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeRecycle(long nativeBitmap); 160036bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeReconfigure(long nativeBitmap, int width, int height, 1601c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik int config, int allocSize); 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 160336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeCompress(long nativeBitmap, int format, 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int quality, OutputStream stream, 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] tempStorage); 160636bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeErase(long nativeBitmap, int color); 160736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeRowBytes(long nativeBitmap); 160836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeConfig(long nativeBitmap); 16098cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 161036bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeGetPixel(long nativeBitmap, int x, int y, 16111abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik boolean isPremultiplied); 161236bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeGetPixels(long nativeBitmap, int[] pixels, 16131abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int offset, int stride, int x, int y, 16141abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int width, int height, boolean isPremultiplied); 16158cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 161636bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetPixel(long nativeBitmap, int x, int y, 16171abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int color, boolean isPremultiplied); 161836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetPixels(long nativeBitmap, int[] colors, 16191abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int offset, int stride, int x, int y, 16201abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int width, int height, boolean isPremultiplied); 162136bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeCopyPixelsToBuffer(long nativeBitmap, 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Buffer dst); 162336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeCopyPixelsFromBuffer(long nativeBitmap, Buffer src); 162436bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeGenerationId(long nativeBitmap); 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreateFromParcel(Parcel p); 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns true on success 162836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeWriteToParcel(long nativeBitmap, 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable, 1630de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn int density, 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Parcel p); 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns a new bitmap built from the native bitmap's alpha, and the paint 163336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native Bitmap nativeExtractAlpha(long nativeBitmap, 163436bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat long nativePaint, 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] offsetXY); 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 163736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativePrepareToDraw(long nativeBitmap); 163836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeHasAlpha(long nativeBitmap); 163936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetAlphaAndPremultiplied(long nativeBitmap, 164036bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat boolean hasAlpha, 16418790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III boolean isPremul); 164236bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeHasMipMap(long nativeBitmap); 164336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetHasMipMap(long nativeBitmap, boolean hasMipMap); 164436bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeSameAs(long nativeBitmap0, long nativeBitmap1); 164536bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat 164636bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat /* package */ final long ni() { 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNativeBitmap; 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1650