Bitmap.java revision 17a8bfc38a565ae96f43d36b223779be840bb50c
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 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private byte[] mNinePatchChunk; // may be null 72ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani private int[] mLayoutBounds; // may be null 731abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private int mWidth; 741abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private int mHeight; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mRecycled; 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Package-scoped for fast access. 78dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int mDensity = getDefaultDensity(); 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn private static volatile Matrix sScaleMatrix; 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn private static volatile int sDefaultDensity = -1; 8302890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 8496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn /** 8596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * For backwards compatibility, allows the app layer to change the default 8696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density when running old apps. 8796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @hide 8896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn */ 8996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn public static void setDefaultDensity(int density) { 9096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = density; 9196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 923849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 933849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy static int getDefaultDensity() { 9496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (sDefaultDensity >= 0) { 9596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 9696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 971f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy //noinspection deprecation 9896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = DisplayMetrics.DENSITY_DEVICE; 9996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 10096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 101dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1039f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Private constructor that must received an already allocated native bitmap 1049f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * int (pointer). 105ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 1069f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik @SuppressWarnings({"UnusedDeclaration"}) // called from JNI 10736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat Bitmap(long nativeBitmap, byte[] buffer, int width, int height, int density, 1081abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik boolean isMutable, boolean isPremultiplied, 1091abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik byte[] ninePatchChunk, int[] layoutBounds) { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nativeBitmap == 0) { 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("internal error: native bitmap is 0"); 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1138cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1141abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mWidth = width; 1151abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mHeight = height; 1161abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsMutable = isMutable; 1171abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = isPremultiplied; 118e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mBuffer = buffer; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we delete this in our finalizer 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNativeBitmap = nativeBitmap; 121e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mFinalizer = new BitmapFinalizer(nativeBitmap); 122e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = ninePatchChunk; 124ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = layoutBounds; 125de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (density >= 0) { 126de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn mDensity = density; 127de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn } 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1311abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Native bitmap has been reconfigured, so set premult and cached 1321abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * width/height values 1339f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik */ 1349f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik @SuppressWarnings({"UnusedDeclaration"}) // called from JNI 1351abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik void reinit(int width, int height, boolean isPremultiplied) { 1361abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mWidth = width; 1371abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mHeight = height; 1381abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = isPremultiplied; 1399f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik } 1409f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik 1419f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik /** 14211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Returns the density for this bitmap.</p> 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The default density is the same density as the current display, 14596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * unless the current application does not support different screen 14696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * densities in which case it is 14796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * {@link android.util.DisplayMetrics#DENSITY_DEFAULT}. Note that 14896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * compatibility mode is determined by the application that was initially 14996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * loaded into a process -- applications that share the same process should 15096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * all have the same compatibility, or ensure they explicitly set the 15196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density of their bitmaps appropriately.</p> 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @return A scaling factor of the default density or {@link #DENSITY_NONE} 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if the scaling factor is unknown. 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #setDensity(int) 157a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 15811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 15911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getDensity() { 16211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return mDensity; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Specifies the density for this bitmap. When the bitmap is 16711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * drawn to a Canvas that also has a density, it will be scaled 16811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * appropriately.</p> 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param density The density scaling factor to use with this bitmap or 17111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * {@link #DENSITY_NONE} if the density is unknown. 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #getDensity() 174a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 17511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 17611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public void setDensity(int density) { 17911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn mDensity = density; 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 181c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 182c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 183c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Modifies the bitmap to have a specified width, height, and {@link 184c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * Config}, without affecting the underlying allocation backing the bitmap. 185c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * Bitmap pixel data is not re-initialized for the new configuration.</p> 186c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 187c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>This method can be used to avoid allocating a new bitmap, instead 188c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * reusing an existing bitmap's allocation for a new configuration of equal 189c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * or lesser size. If the Bitmap's allocation isn't large enough to support 190c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the new configuration, an IllegalArgumentException will be thrown and the 191c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * bitmap will not be modified.</p> 192c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 193c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>The result of {@link #getByteCount()} will reflect the new configuration, 194c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * while {@link #getAllocationByteCount()} will reflect that of the initial 195c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * configuration.</p> 196c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 19717a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III * <p>Note: This may change this result of hasAlpha(). When converting to 565, 19817a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III * the new bitmap will always be considered opaque. When converting from 565, 19917a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III * the new bitmap will be considered non-opaque, and will respect the value 20017a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III * set by setPremultiplied().</p> 20117a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III * 202c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: This method should NOT be called on a bitmap currently used 203c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * by the view system. It does not make guarantees about how the underlying 204c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * pixel buffer is remapped to the new config, just that the allocation is 205c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * reused. Additionally, the view system does not account for bitmap 206c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * properties being modifying during use, e.g. while attached to 207c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * drawables.</p> 208c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 209c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 210c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 211c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 212c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 213c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void reconfigure(int width, int height, Config config) { 214c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik checkRecycled("Can't call reconfigure() on a recycled bitmap"); 215c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (width <= 0 || height <= 0) { 216c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik throw new IllegalArgumentException("width and height must be > 0"); 217c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 218c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (!isMutable()) { 2199c2cde0583d02ba7551877dbe7a5ecaee6defb56Chris Craik throw new IllegalStateException("only mutable bitmaps may be reconfigured"); 220c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 221c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (mBuffer == null) { 2221abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik throw new IllegalStateException("native-backed bitmaps may not be reconfigured"); 223c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 224c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 22517a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III nativeReconfigure(mNativeBitmap, width, height, config.nativeInt, mBuffer.length, 22617a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III mIsPremultiplied); 227c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik mWidth = width; 228c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik mHeight = height; 229c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 230c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 231c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 232c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 233c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current height and config.</p> 234c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 235c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 236c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 237c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 238c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 239c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 240c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 241c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 242c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 243c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setWidth(int width) { 244c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(width, getHeight(), getConfig()); 245c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 246c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 247c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 248c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 249c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current width and config.</p> 250c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 251c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 252c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 253c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 254c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 255c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 256c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 257c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 258c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 259c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setHeight(int height) { 260c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(getWidth(), height, getConfig()); 261c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 262c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 263c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 264c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 265c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current height and width.</p> 266c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 267c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 268c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 269c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 270c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 271c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 272c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 273c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 274c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 275c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setConfig(Config config) { 276c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(getWidth(), getHeight(), config); 277c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 278c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the nine patch chunk. 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param chunk The definition of the nine patch 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setNinePatchChunk(byte[] chunk) { 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = chunk; 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2898cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 291ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * Sets the layout bounds as an array of left, top, right, bottom integers 29217471d730f20ee785c9c48a99eb331a40550612bRomain Guy * @param bounds the array containing the padding values 293ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * 294ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 295ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 296ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public void setLayoutBounds(int[] bounds) { 297ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = bounds; 298ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 299ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 300ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 301a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * Free the native object associated with this bitmap, and clear the 302a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * reference to the pixel data. This will not free the pixel data synchronously; 303a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * it simply allows it to be garbage collected if there are no other references. 304a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * The bitmap is marked as "dead", meaning it will throw an exception if 305a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * getPixels() or setPixels() is called, and will draw nothing. This operation 306a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * cannot be reversed, so it should only be called if you are sure there are no 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * further uses for the bitmap. This is an advanced call, and normally need 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not be called, since the normal GC process will free up this memory when 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * there are no more references to this bitmap. 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void recycle() { 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mRecycled) { 313547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase if (nativeRecycle(mNativeBitmap)) { 314547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // return value indicates whether native pixel object was actually recycled. 315547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // false indicates that it is still in use at the native level and these 316547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // objects should not be collected now. They will be collected later when the 317547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // Bitmap itself is collected. 318547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase mBuffer = null; 319547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase mNinePatchChunk = null; 320547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase } 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycled = true; 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if this bitmap has been recycled. If so, then it is an error 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to try to access its pixels, and the bitmap will not draw. 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the bitmap has been recycled 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isRecycled() { 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mRecycled; 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3348cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3360bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * Returns the generation ID of this bitmap. The generation ID changes 3370bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * whenever the bitmap is modified. This can be used as an efficient way to 3380bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * check if a bitmap has changed. 3390bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * 3400bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * @return The current generation ID for this bitmap. 3410bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy */ 3420bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy public int getGenerationId() { 3430bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy return nativeGenerationId(mNativeBitmap); 3440bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy } 3450bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy 3460bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy /** 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is called by methods that want to throw an exception if the bitmap 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * has already been recycled. 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkRecycled(String errorMessage) { 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mRecycled) { 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(errorMessage); 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3558cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that x and y are >= 0 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate to ensure is >= 0 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate to ensure is >= 0 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkXYSign(int x, int y) { 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x < 0) { 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be >= 0"); 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y < 0) { 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be >= 0"); 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that width and height are > 0 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width to ensure is > 0 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height to ensure is > 0 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkWidthHeight(int width, int height) { 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width <= 0) { 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be > 0"); 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height <= 0) { 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be > 0"); 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 386676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 387676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Possible bitmap configurations. A bitmap configuration describes 388676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * how pixels are stored. This affects the quality (color depth) as 389676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * well as the ability to display transparent/translucent colors. 390676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum Config { 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // these native values must match up with the enum in SkBitmap.h 393676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 394676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 395676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored as a single translucency (alpha) channel. 396676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This is very useful to efficiently store masks for instance. 397676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * No color information is stored. 398676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * With this configuration, each pixel requires 1 byte of memory. 399676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 400b644a3b84521e2155a5af985a4d4ed305474e567Derek Sollenberger ALPHA_8 (1), 401676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 402676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 403676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes and only the RGB channels are 404676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * encoded: red is stored with 5 bits of precision (32 possible 405676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values), green is stored with 6 bits of precision (64 possible 406676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values) and blue is stored with 5 bits of precision. 407676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 408676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration can produce slight visual artifacts depending 409676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * on the configuration of the source. For instance, without 410676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * dithering, the result might show a greenish tint. To get better 411676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * results dithering should be applied. 412676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 413676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration may be useful when using opaque bitmaps 414676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * that do not require high color fidelity. 415676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 416b644a3b84521e2155a5af985a4d4ed305474e567Derek Sollenberger RGB_565 (3), 417676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 418676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 419676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes. The three RGB color channels 420676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * and the alpha channel (translucency) are stored with a 4 bits 421676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * precision (16 possible values.) 422676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 423676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is mostly useful if the application needs 424676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * to store translucency information but also needs to save 425676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * memory. 426676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 427676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * It is recommended to use {@link #ARGB_8888} instead of this 428676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * configuration. 42925ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * 430e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * Note: as of {@link android.os.Build.VERSION_CODES#KITKAT}, 43125ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * any bitmap created with this configuration will be created 43225ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * using {@link #ARGB_8888} instead. 433676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 434676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * @deprecated Because of the poor quality of this configuration, 435676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * it is advised to use {@link #ARGB_8888} instead. 436676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 437676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @Deprecated 438b644a3b84521e2155a5af985a4d4ed305474e567Derek Sollenberger ARGB_4444 (4), 439676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 440676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 441676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 4 bytes. Each channel (RGB and alpha 442676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * for translucency) is stored with 8 bits of precision (256 443676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * possible values.) 444676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 445676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is very flexible and offers the best 446676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * quality. It should be used whenever possible. 447676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 448b644a3b84521e2155a5af985a4d4ed305474e567Derek Sollenberger ARGB_8888 (5); 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 450676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy final int nativeInt; 451676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 452676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @SuppressWarnings({"deprecation"}) 453676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy private static Config sConfigs[] = { 454b644a3b84521e2155a5af985a4d4ed305474e567Derek Sollenberger null, ALPHA_8, null, RGB_565, ARGB_4444, ARGB_8888 455676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy }; 456676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Config(int ni) { 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = ni; 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4608cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 461676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy static Config nativeToConfig(int ni) { 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sConfigs[ni]; 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4658cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4673849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the bitmap's pixels into the specified buffer (allocated by the 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * caller). An exception is thrown if the buffer is not large enough to 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * hold all of the pixels (taking into account the number of bytes per 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixel) or if the Buffer subclass is not one of the support types 4713849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (ByteBuffer, ShortBuffer, IntBuffer).</p> 4723849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>The content of the bitmap is copied into the buffer as-is. This means 4733849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * that if this bitmap stores its pixels pre-multiplied 4743849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (see {@link #isPremultiplied()}, the values in the buffer will also be 4753849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * pre-multiplied.</p> 4761f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * <p>After this method returns, the current position of the buffer is 4771f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * updated: the position is incremented by the number of elements written 4781f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * in the buffer.</p> 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsToBuffer(Buffer dst) { 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = dst.remaining(); 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dst instanceof ByteBuffer) { 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof ShortBuffer) { 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof IntBuffer) { 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4928cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long bufferSize = (long)elements << shift; 494f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long pixelSize = getByteCount(); 4958cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferSize < pixelSize) { 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4998cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsToBuffer(mNativeBitmap, dst); 5018cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // now update the buffer's position 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = dst.position(); 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position += pixelSize >> shift; 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dst.position(position); 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5093849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the pixels from the buffer, beginning at the current position, 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * overwriting the bitmap's pixels. The data in the buffer is not changed 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in any way (unlike setPixels(), which converts from unpremultipled 32bit 5123849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * to whatever the bitmap's native format is.</p> 5131f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * <p>After this method returns, the current position of the buffer is 5141f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * updated: the position is incremented by the number of elements read from 5151f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * the buffer. If you need to read the bitmap from the buffer again you must 5161f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * first rewind the buffer.</p> 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsFromBuffer(Buffer src) { 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("copyPixelsFromBuffer called on recycled bitmap"); 5208cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = src.remaining(); 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (src instanceof ByteBuffer) { 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof ShortBuffer) { 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof IntBuffer) { 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5328cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5333849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy long bufferBytes = (long) elements << shift; 534f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long bitmapBytes = getByteCount(); 5358cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferBytes < bitmapBytes) { 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5398cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsFromBuffer(mNativeBitmap, src); 54155adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen 54255adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen // now update the buffer's position 54355adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen int position = src.position(); 54455adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen position += bitmapBytes >> shift; 54555adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen src.position(position); 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5478cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Tries to make a new bitmap based on the dimensions of this bitmap, 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setting the new bitmap's config to the one specified, and then copying 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this bitmap's pixels into the new bitmap. If the conversion is not 55296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * supported, or the allocator fails, then this returns NULL. The returned 55396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * bitmap initially has the same density as the original. 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The desired config for the resulting bitmap 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isMutable True if the resulting bitmap should be mutable (i.e. 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * its pixels can be modified) 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the new bitmap, or null if the copy could not be made. 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap copy(Config config, boolean isMutable) { 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't copy a recycled bitmap"); 56296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn Bitmap b = nativeCopy(mNativeBitmap, config.nativeInt, isMutable); 56396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (b != null) { 56491f0a455bb6670b59b8d15cc7a9adb0e6d7f146dJohn Reck b.setAlphaAndPremultiplied(hasAlpha(), mIsPremultiplied); 56596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn b.mDensity = mDensity; 56696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 56796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return b; 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 57002d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick /** 571f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * Creates a new bitmap, scaled from an existing bitmap, when possible. If the 572f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * specified width and height are the same as the current width and height of 5739f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * the source bitmap, the source bitmap is returned and no new bitmap is 574f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * created. 57502d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * 57602d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param src The source bitmap. 57702d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstWidth The new bitmap's desired width. 57802d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstHeight The new bitmap's desired height. 57902d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param filter true if the source should be filtered. 580f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return The new scaled bitmap or the source bitmap if no scaling is required. 581790552b240c05d58407f7c14acba656b2e85c523Romain Guy * @throws IllegalArgumentException if width is <= 0, or height is <= 0 58202d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick */ 583f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy public static Bitmap createScaledBitmap(Bitmap src, int dstWidth, int dstHeight, 584f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy boolean filter) { 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m; 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // small pool of just 1 matrix 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = sScaleMatrix; 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = null; 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null) { 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = new Matrix(); 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5958cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = src.getWidth(); 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = src.getHeight(); 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sx = dstWidth / (float)width; 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sy = dstHeight / (float)height; 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.setScale(sx, sy); 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap b = Bitmap.createBitmap(src, 0, 0, width, height, m, filter); 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do we need to check for null? why not just assign everytime? 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sScaleMatrix == null) { 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = m; 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6108cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen return b; 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6128cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the source bitmap. The new bitmap may 61596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * be the same object as source, or a copy may have been made. It is 61696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap src) { 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(src, 0, 0, src.getWidth(), src.getHeight()); 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the specified subset of the source 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bitmap. The new bitmap may be the same object as source, or a copy may 625f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * have been made. It is initialized with the same density as the original 626f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * bitmap. 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 633f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return A copy of a subset of the source bitmap or the source bitmap itself. 634790552b240c05d58407f7c14acba656b2e85c523Romain Guy * @throws IllegalArgumentException if the x, y, width, height values are 635790552b240c05d58407f7c14acba656b2e85c523Romain Guy * outside of the dimensions of the source bitmap, or width is <= 0, 636790552b240c05d58407f7c14acba656b2e85c523Romain Guy * or height is <= 0 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height) { 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(source, x, y, width, height, null, false); 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6418cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from subset of the source bitmap, 644f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * transformed by the optional matrix. The new bitmap may be the 645f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same object as source, or a copy may have been made. It is 64696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 647f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * 648f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * If the source bitmap is immutable and the requested subset is the 649f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same as the source bitmap itself, then the source bitmap is 650f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * returned and no new bitmap is created. 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 65760b88edea7132ddce90f2dced07c6706f1502270Ken Shirriff * @param m Optional matrix to be applied to the pixels 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param filter true if the source should be filtered. 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Only applies if the matrix contains more than just 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * translation. 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A bitmap that represents the specified subset of source 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the x, y, width, height values are 663790552b240c05d58407f7c14acba656b2e85c523Romain Guy * outside of the dimensions of the source bitmap, or width is <= 0, 664790552b240c05d58407f7c14acba656b2e85c523Romain Guy * or height is <= 0 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m, boolean filter) { 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > source.getWidth()) { 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x + width must be <= bitmap.width()"); 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > source.getHeight()) { 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y + height must be <= bitmap.height()"); 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // check if we can just return our argument unchanged 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!source.isMutable() && x == 0 && y == 0 && width == source.getWidth() && 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height == source.getHeight() && (m == null || m.isIdentity())) { 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return source; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6838cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int neww = width; 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newh = height; 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Canvas canvas = new Canvas(); 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bitmap; 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint paint; 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect srcR = new Rect(x, y, x + width, y + height); 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF dstR = new RectF(0, 0, width, height); 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 693feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy Config newConfig = Config.ARGB_8888; 694feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy final Config config = source.getConfig(); 695feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy // GIF files generate null configs, assume ARGB_8888 696feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy if (config != null) { 697feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy switch (config) { 698feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case RGB_565: 699feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.RGB_565; 700feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 701feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ALPHA_8: 702feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ALPHA_8; 703feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 704676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy //noinspection deprecation 705feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_4444: 706feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_8888: 707feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy default: 708feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ARGB_8888; 709feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 710feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 711feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 712d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null || m.isIdentity()) { 714d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, newConfig, source.hasAlpha()); 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = null; // not needed 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 717d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy final boolean transformed = !m.rectStaysRect(); 718d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF deviceR = new RectF(); 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.mapRect(deviceR, dstR); 721d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project neww = Math.round(deviceR.width()); 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newh = Math.round(deviceR.height()); 724d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 725d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, transformed ? Config.ARGB_8888 : newConfig, 726d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy transformed || source.hasAlpha()); 727d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.translate(-deviceR.left, -deviceR.top); 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.concat(m); 730d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = new Paint(); 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setFilterBitmap(filter); 733d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (transformed) { 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setAntiAlias(true); 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7378790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The new bitmap was created from a known bitmap source so assume that 73911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // they use the same density 74011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn bitmap.mDensity = source.mDensity; 74191f0a455bb6670b59b8d15cc7a9adb0e6d7f146dJohn Reck bitmap.setAlphaAndPremultiplied(source.hasAlpha(), source.mIsPremultiplied); 7428790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 74396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.setBitmap(bitmap); 74496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.drawBitmap(source, srcR, dstR, paint); 7456311d0a079702b29984c0d31937345be105e1a5eDianne Hackborn canvas.setBitmap(null); 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bitmap; 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7498cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 75196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 75296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int width, int height, Config config) { 760d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy return createBitmap(width, height, config, true); 761d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 762d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 763d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy /** 764d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * Returns a mutable bitmap with the specified width and height. Its 765dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 766dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 767dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 768dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 769dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 770dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 771dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. 772dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0 773dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 774dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int width, 775dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int height, Config config) { 776dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(display, width, height, config, true); 777dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 778dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 779dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 780dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 781d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * initial density is as per {@link #getDensity}. 782d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 783d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param width The width of the bitmap 784d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param height The height of the bitmap 785d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param config The bitmap config to create. 786d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 787d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * bitmap as opaque. Doing so will clear the bitmap in black 788d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * instead of transparent. 789d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 790d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @throws IllegalArgumentException if the width or height are <= 0 791d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy */ 792d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy private static Bitmap createBitmap(int width, int height, Config config, boolean hasAlpha) { 793dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, width, height, config, hasAlpha); 794dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 795dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 796dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 797dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 798dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 799dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 800dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 801dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 802dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 803dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 804dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. 805dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 806dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bitmap as opaque. Doing so will clear the bitmap in black 807dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * instead of transparent. 808dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 809dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0 810dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 811dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn private static Bitmap createBitmap(DisplayMetrics display, int width, int height, 812dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn Config config, boolean hasAlpha) { 813e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 814e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 815e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreate(null, 0, width, width, height, config.nativeInt, true); 817dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (display != null) { 818dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn bm.mDensity = display.densityDpi; 819dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 8208790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III bm.setHasAlpha(hasAlpha); 821d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (config == Config.ARGB_8888 && !hasAlpha) { 8221373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate nativeErase(bm.mNativeBitmap, 0xff000000); 823d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 8243b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // No need to initialize the bitmap to zeroes with other configs; 8253b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // it is backed by a VM byte array which is by definition preinitialized 8263b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // to all zeroes. 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8298cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 83296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 83396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset Number of values to skip before the first color in the 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * array of colors. 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride Number of colors in the array between rows (must be >= 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * width or <= -width). 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int offset, int stride, 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, int height, Config config) { 850dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, colors, offset, stride, width, height, config); 851dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 852dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 853dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 854dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a immutable bitmap with the specified width and height, with each 855dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 856dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 857dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 858dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 859dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 860dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param colors Array of {@link Color} used to initialize the pixels. 861dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param offset Number of values to skip before the first color in the 862dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * array of colors. 863dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param stride Number of colors in the array between rows (must be >= 864dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * width or <= -width). 865dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 866dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 867dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. If the config does not 868dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * support per-pixel alpha (e.g. RGB_565), then the alpha 869dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bytes in the colors[] will be ignored (assumed to be FF) 870dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0, or if 871dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * the color array's length is less than the number of pixels. 872dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 873dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int colors[], 874dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int offset, int stride, int width, int height, Config config) { 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = colors.length; 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) || lastScanline < 0 || 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (lastScanline + width > length)) { 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 886e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 887e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 888e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 889dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn Bitmap bm = nativeCreate(colors, offset, stride, width, height, 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project config.nativeInt, false); 891dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (display != null) { 892dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn bm.mDensity = display.densityDpi; 893dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 894dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return bm; 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 89996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 90096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This array must be at least as large as width * height. 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int width, int height, Config config) { 913dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, colors, 0, width, width, height, config); 914dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 915dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 916dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 917dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a immutable bitmap with the specified width and height, with each 918dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 919dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 920dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 921dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 922dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 923dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param colors Array of {@link Color} used to initialize the pixels. 924dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * This array must be at least as large as width * height. 925dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 926dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 927dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. If the config does not 928dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * support per-pixel alpha (e.g. RGB_565), then the alpha 929dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bytes in the colors[] will be ignored (assumed to be FF) 930dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0, or if 931dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * the color array's length is less than the number of pixels. 932dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 933dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int colors[], 934dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int width, int height, Config config) { 935dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(display, colors, 0, width, width, height, config); 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an optional array of private data, used by the UI system for 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * some bitmaps. Not intended to be called by applications. 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public byte[] getNinePatchChunk() { 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNinePatchChunk; 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 947ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 948ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @return the layout padding [left, right, top, bottom] 949ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 950ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public int[] getLayoutBounds() { 951ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani return mLayoutBounds; 952ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 953ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 954ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Specifies the known formats a bitmap can be compressed into 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum CompressFormat { 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEG (0), 9592305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora PNG (1), 9602305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora WEBP (2); 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CompressFormat(int nativeInt) { 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = nativeInt; 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nativeInt; 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Number of bytes of temp storage we use for communicating between the 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * native compressor and the java OutputStream. 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final static int WORKING_COMPRESS_STORAGE = 4096; 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write a compressed version of the bitmap to the specified outputstream. 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this returns true, the bitmap can be reconstructed by passing a 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * corresponding inputstream to BitmapFactory.decodeStream(). Note: not 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * all Formats support all bitmap configs directly, so it is possible that 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the returned bitmap from BitmapFactory could be in a different bitdepth, 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and/or may have lost per-pixel alpha (e.g. JPEG only supports opaque 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixels). 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param format The format of the compressed image 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param quality Hint to the compressor, 0-100. 0 meaning compress for 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * small size, 100 meaning compress for max quality. Some 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * formats, like PNG which is lossless, will ignore the 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * quality setting 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stream The outputstream to write the compressed data. 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if successfully compressed to the specified stream. 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean compress(CompressFormat format, int quality, OutputStream stream) { 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't compress a recycled bitmap"); 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do explicit check before calling the native method 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stream == null) { 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new NullPointerException(); 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (quality < 0 || quality > 100) { 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("quality must be 0..100"); 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeCompress(mNativeBitmap, format.nativeInt, quality, 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project stream, new byte[WORKING_COMPRESS_STORAGE]); 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10038cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1005ff236f5fc1a088b1210d37a67b0e88b06c0fbdb2Newton Allen * Returns true if the bitmap is marked as mutable (i.e. can be drawn into) 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isMutable() { 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mIsMutable; 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10113849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy /** 10123849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Indicates whether pixels stored in this bitmaps are stored pre-multiplied. 10133849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * When a pixel is pre-multiplied, the RGB components have been multiplied by 10143849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * the alpha component. For instance, if the original color is a 50% 10153849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * translucent red <code>(128, 255, 0, 0)</code>, the pre-multiplied form is 10163849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <code>(128, 128, 0, 0)</code>.</p> 10173849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 10183849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>This method always returns false if {@link #getConfig()} is 10194ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * {@link Bitmap.Config#RGB_565}.</p> 10204ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * 10214ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * <p>This method only returns true if {@link #hasAlpha()} returns true. 10224ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * A bitmap with no alpha channel can be used both as a pre-multiplied and 10234ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * as a non pre-multiplied bitmap.</p> 10241abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10251abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>Only pre-multiplied bitmaps may be drawn by the view system or 10261abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * {@link Canvas}. If a non-pre-multiplied bitmap with an alpha channel is 10271abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * drawn to a Canvas, a RuntimeException will be thrown.</p> 10281abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10293849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @return true if the underlying pixels have been pre-multiplied, false 10303849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * otherwise 10311abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10321abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see Bitmap#setPremultiplied(boolean) 10331abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see BitmapFactory.Options#inPremultiplied 10343849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy */ 10353849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy public final boolean isPremultiplied() { 10361abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mIsPremultiplied && getConfig() != Config.RGB_565 && hasAlpha(); 10371abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik } 10381abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik 10391abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik /** 10401abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Sets whether the bitmap should treat its data as pre-multiplied. 10411abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10421abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>Bitmaps are always treated as pre-multiplied by the view system and 10431abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * {@link Canvas} for performance reasons. Storing un-pre-multiplied data in 10441abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * a Bitmap (through {@link #setPixel}, {@link #setPixels}, or {@link 10451abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * BitmapFactory.Options#inPremultiplied BitmapFactory.Options.inPremultiplied}) 10461abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * can lead to incorrect blending if drawn by the framework.</p> 10471abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10481abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>This method will not affect the behavior of a bitmap without an alpha 10491abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * channel, or if {@link #hasAlpha()} returns false.</p> 10501abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 1051889a1ddd00b74933d5f7daa651d98133bcb034baBen Murdoch * <p>Calling {@link #createBitmap} or {@link #createScaledBitmap} with a source 10528790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * Bitmap whose colors are not pre-multiplied may result in a RuntimeException, 10538790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * since those functions require drawing the source, which is not supported for 10548790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * un-pre-multiplied Bitmaps.</p> 10558790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III * 10561abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see Bitmap#isPremultiplied() 10571abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see BitmapFactory.Options#inPremultiplied 10581abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik */ 10591abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik public final void setPremultiplied(boolean premultiplied) { 10601abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = premultiplied; 106191f0a455bb6670b59b8d15cc7a9adb0e6d7f146dJohn Reck nativeSetAlphaAndPremultiplied(mNativeBitmap, hasAlpha(), premultiplied); 10628790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III } 10638790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III 10648790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III /** Helper function to set both alpha and premultiplied. **/ 10658790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III private final void setAlphaAndPremultiplied(boolean hasAlpha, boolean premultiplied) { 10668790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III mIsPremultiplied = premultiplied; 10678790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III nativeSetAlphaAndPremultiplied(mNativeBitmap, hasAlpha, premultiplied); 10683849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy } 10693849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's width */ 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getWidth() { 10721abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mWidth; 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's height */ 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getHeight() { 10771abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mHeight; 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10798cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 108111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 108211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10842784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledWidth(Canvas canvas) { 108511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, canvas.mDensity); 10862784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 10872784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 10882784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 108911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 109011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 10912784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 10922784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledHeight(Canvas canvas) { 109311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, canvas.mDensity); 109411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 109511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 109611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 109711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 109811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 109911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 110011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(DisplayMetrics metrics) { 110111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, metrics.densityDpi); 110211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 110311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 110411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 110511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 110611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 110711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 110811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(DisplayMetrics metrics) { 110911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, metrics.densityDpi); 11102784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 11112784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 11122784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 11132784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * Convenience method that returns the width of this bitmap divided 11142784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * by the density scale factor. 11152784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * 111611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 11172784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * @return The scaled width of this bitmap, according to the density scale factor. 11182784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 111911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(int targetDensity) { 112011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, targetDensity); 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Convenience method that returns the height of this bitmap divided 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by the density scale factor. 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 112711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The scaled height of this bitmap, according to the density scale factor. 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 113011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(int targetDensity) { 113111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, targetDensity); 113211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 113311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 113411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 113511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @hide 113611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 113711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn static public int scaleFromDensity(int size, int sdensity, int tdensity) { 11380b68477f8287fe5ddac1beb1c9d0811ded034dadRomain Guy if (sdensity == DENSITY_NONE || tdensity == DENSITY_NONE || sdensity == tdensity) { 113911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return size; 11402784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 114111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 114211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Scale by tdensity / sdensity, rounding up. 1143366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return ((size * tdensity) + (sdensity >> 1)) / sdensity; 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 114511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return the number of bytes between rows in the bitmap's pixels. Note that 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this refers to the pixels as stored natively by the bitmap. If you call 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * getPixels() or setPixels(), then the pixels are uniformly treated as 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32bit values, packed according to the Color class. 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1152e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * <p>As of {@link android.os.Build.VERSION_CODES#KITKAT}, this method 11539f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * should not be used to calculate the memory usage of the bitmap. Instead, 11549f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * see {@link #getAllocationByteCount()}. 11559f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return number of bytes between rows of the native bitmap pixels. 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getRowBytes() { 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeRowBytes(mNativeBitmap); 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11618cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11639f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Returns the minimum number of bytes that can be used to store this bitmap's pixels. 11649f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 1165e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * <p>As of {@link android.os.Build.VERSION_CODES#KITKAT}, the result of this method can 11669f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * no longer be used to determine memory usage of a bitmap. See {@link 1167c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #getAllocationByteCount()}.</p> 1168f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson */ 1169f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson public final int getByteCount() { 1170f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson // int result permits bitmaps up to 46,340 x 46,340 1171f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson return getRowBytes() * getHeight(); 1172f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson } 1173f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson 1174f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson /** 11759f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Returns the size of the allocated memory used to store this bitmap's pixels. 11769f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 11779f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * <p>This can be larger than the result of {@link #getByteCount()} if a bitmap is reused to 1178c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * decode other bitmaps of smaller size, or by manual reconfiguration. See {@link 1179c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #reconfigure(int, int, Config)}, {@link #setWidth(int)}, {@link #setHeight(int)}, {@link 1180c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #setConfig(Bitmap.Config)}, and {@link BitmapFactory.Options#inBitmap 1181c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * BitmapFactory.Options.inBitmap}. If a bitmap is not modified in this way, this value will be 1182c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the same as that returned by {@link #getByteCount()}.</p> 1183c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 1184c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>This value will not change over the lifetime of a Bitmap.</p> 11859f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 1186c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 11879f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik */ 11889f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik public final int getAllocationByteCount() { 1189222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik if (mBuffer == null) { 1190222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik // native backed bitmaps don't support reconfiguration, 1191222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik // so alloc size is always content size 1192222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik return getByteCount(); 1193222f2ad294c9046b62af5e059f8b409aec044ce9Chris Craik } 11949f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik return mBuffer.length; 11959f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik } 11969f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik 11979f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik /** 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If the bitmap's internal config is in one of the public formats, return 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that config, otherwise return null. 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Config getConfig() { 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Config.nativeToConfig(nativeConfig(mNativeBitmap)); 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1205a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** Returns true if the bitmap's config supports per-pixel alpha, and 1206a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * if the pixels may contain non-opaque alpha values. For some configs, 1207a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * this is always false (e.g. RGB_565), since they do not support per-pixel 1208a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * alpha. However, for configs that do, the bitmap may be flagged to be 1209a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * known that all of its pixels are opaque. In this case hasAlpha() will 1210a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * also return false. If a config such as ARGB_8888 is not so flagged, 1211a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * it will return true by default. 1212a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean hasAlpha() { 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeHasAlpha(mNativeBitmap); 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1218a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * Tell the bitmap if all of the pixels are known to be opaque (false) 1219a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * or if some of the pixels may contain non-opaque alpha values (true). 1220366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * Note, for some configs (e.g. RGB_565) this call is ignored, since it 1221366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * does not support per-pixel alpha values. 1222a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * 1223a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * This is meant as a drawing hint, as in some cases a bitmap that is known 1224a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * to be opaque can take a faster drawing case than one that may have 1225a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * non-opaque per-pixel alpha values. 1226a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 1227a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed public void setHasAlpha(boolean hasAlpha) { 12288790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III nativeSetAlphaAndPremultiplied(mNativeBitmap, hasAlpha, mIsPremultiplied); 1229a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed } 1230a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed 1231a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** 1232713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Indicates whether the renderer responsible for drawing this 1233713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * bitmap should attempt to use mipmaps when this bitmap is drawn 1234713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * scaled down. 1235713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1236713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * If you know that you are going to draw this bitmap at less than 1237713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 50% of its original size, you may be able to obtain a higher 1238713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * quality 1239713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1240713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * This property is only a suggestion that can be ignored by the 1241713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * renderer. It is not guaranteed to have any effect. 1242713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1243713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @return true if the renderer should attempt to use mipmaps, 1244713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * false otherwise 1245713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1246713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @see #setHasMipMap(boolean) 1247713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy */ 1248713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy public final boolean hasMipMap() { 1249713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy return nativeHasMipMap(mNativeBitmap); 1250713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy } 1251713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy 1252713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy /** 1253713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Set a hint for the renderer responsible for drawing this bitmap 1254713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * indicating that it should attempt to use mipmaps when this bitmap 1255713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * is drawn scaled down. 1256713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1257713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * If you know that you are going to draw this bitmap at less than 1258713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 50% of its original size, you may be able to obtain a higher 1259713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * quality by turning this property on. 1260713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1261713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Note that if the renderer respects this hint it might have to 1262713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * allocate extra memory to hold the mipmap levels for this bitmap. 1263713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1264713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * This property is only a suggestion that can be ignored by the 1265713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * renderer. It is not guaranteed to have any effect. 1266713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1267713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @param hasMipMap indicates whether the renderer should attempt 1268713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * to use mipmaps 1269713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1270713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @see #hasMipMap() 1271713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy */ 1272713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy public final void setHasMipMap(boolean hasMipMap) { 1273713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy nativeSetHasMipMap(mNativeBitmap, hasMipMap); 1274713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy } 1275713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy 1276713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy /** 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the bitmap's pixels with the specified {@link Color}. 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable. 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void eraseColor(int c) { 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't erase a recycled bitmap"); 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException("cannot erase immutable bitmaps"); 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeErase(mNativeBitmap, c); 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the {@link Color} at the specified location. Throws an exception 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if x or y are out of bounds (negative or >= to the width or height 12923849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * respectively). The returned color is a non-premultiplied ARGB value. 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate (0...width-1) of the pixel to return 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate (0...height-1) of the pixel to return 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The argb {@link Color} at the specified coordinate 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y exceed the bitmap's bounds 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getPixel(int x, int y) { 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixel() on a recycled bitmap"); 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 13021abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return nativeGetPixel(mNativeBitmap, x, y, mIsPremultiplied); 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13048cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns in pixels[] a copy of the data in the bitmap. Each value is 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a packed int representing a {@link Color}. The stride parameter allows 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the caller to allow for gaps in the returned pixels array between 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows. For normal packed results, just pass width for the stride value. 13103849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * The returned colors are non-premultiplied ARGB values. 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The array to receive the bitmap's colors 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The first index to write into pixels[] 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of entries in pixels[] to skip between 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows (must be >= bitmap's width). Can be negative. 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to read from 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to read from 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels to read from each row 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to read 13223849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height exceed the 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds of the bitmap, or if abs(stride) < width. 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void getPixels(int[] pixels, int offset, int stride, 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int x, int y, int width, int height) { 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixels() on a recycled bitmap"); 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeGetPixels(mNativeBitmap, pixels, offset, stride, 13361abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik x, y, width, height, mIsPremultiplied); 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13388cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixel() 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixel() 13423849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate of the pixel 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate of the pixel 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelAccess(int x, int y) { 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x >= getWidth()) { 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be < bitmap.width()"); 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y >= getHeight()) { 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be < bitmap.height()"); 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixels() 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixels() 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x left edge of the area of pixels to access 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y top edge of the area of pixels to access 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width of the area of pixels to access 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height of the area of pixels to access 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset offset into pixels[] array 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride number of elements in pixels[] between each logical row 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels array to hold the area of pixels being accessed 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelsAccess(int x, int y, int width, int height, 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset, int stride, int pixels[]) { 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width < 0) { 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be >= 0"); 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height < 0) { 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be >= 0"); 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > getWidth()) { 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "x + width must be <= bitmap.width()"); 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > getHeight()) { 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "y + height must be <= bitmap.height()"); 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = pixels.length; 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || lastScanline < 0 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (lastScanline + width > length)) { 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13968cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13983849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Write the specified {@link Color} into the bitmap (assuming it is 13993849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * mutable) at the x,y coordinate. The color must be a 14003849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * non-premultiplied ARGB value.</p> 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the pixel to replace (0...width-1) 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the pixel to replace (0...height-1) 14043849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @param color The ARGB color to write into the bitmap 14053849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y are outside of the bitmap's 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds. 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixel(int x, int y, int color) { 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixel() on a recycled bitmap"); 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 14161abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik nativeSetPixel(mNativeBitmap, x, y, color, mIsPremultiplied); 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14188cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14203849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Replace pixels in the bitmap with the colors in the array. Each element 14213849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * in the array is a packed int prepresenting a non-premultiplied ARGB 14223849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * {@link Color}.</p> 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The colors to write to the bitmap 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The index of the first color to read from pixels[] 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of colors in pixels[] to skip between rows. 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Normally this value will be the same as the width of 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap, but it can be larger (or negative). 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to write to in 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to write to in 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of colors to copy from pixels[] per row 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to write to the bitmap 14353849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height are outside of 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap's bounds. 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixels(int[] pixels, int offset, int stride, 14433849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy int x, int y, int width, int height) { 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixels() on a recycled bitmap"); 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeSetPixels(mNativeBitmap, pixels, offset, stride, 14531abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik x, y, width, height, mIsPremultiplied); 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14558cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final Parcelable.Creator<Bitmap> CREATOR 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new Parcelable.Creator<Bitmap>() { 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Rebuilds a bitmap previously stored with writeToParcel(). 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to read the bitmap from 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return a new bitmap created from the data in the parcel 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap createFromParcel(Parcel p) { 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreateFromParcel(p); 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to unparcel Bitmap"); 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap[] newArray(int size) { 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new Bitmap[size]; 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * No special parcel contents. 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int describeContents() { 1480b6377170960d40e66858d8b4d335a95eac773762Bart Sears return 0; 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write the bitmap and its pixels to the parcel. The bitmap can be 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rebuilt from the parcel by calling CREATOR.createFromParcel(). 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to write the bitmap data into 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel p, int flags) { 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't parcel a recycled bitmap"); 1490de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (!nativeWriteToParcel(mNativeBitmap, mIsMutable, mDensity, p)) { 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("native writeToParcel failed"); 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This may be drawn with Canvas.drawBitmap(), where the color(s) will be 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * taken from the paint that is passed to the draw call. 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the alpha channel of the original bitmap. 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha() { 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return extractAlpha(null, null); 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15058cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * These values may be affected by the optional Paint parameter, which 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can contain its own alpha, and may also contain a MaskFilter which 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * could change the actual dimensions of the resulting bitmap (e.g. 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a blur maskfilter might enlarge the resulting bitmap). If offsetXY 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is not null, it returns the amount to offset the returned bitmap so 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that it will logically align with the original. For example, if the 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint contains a blur of radius 2, then offsetXY[] would contains 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * -2, -2, so that drawing the alpha bitmap offset by (-2, -2) and then 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawing the original would result in the blur visually aligning with 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the original. 151896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 151996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The initial density of the returned bitmap is the same as the original's. 152096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param paint Optional paint used to modify the alpha values in the 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * resulting bitmap. Pass null for default behavior. 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offsetXY Optional array that returns the X (index 0) and Y 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (index 1) offset needed to position the returned bitmap 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * so that it visually lines up with the original. 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the (optionally modified by paint) alpha 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * channel of the original bitmap. This may be drawn with 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Canvas.drawBitmap(), where the color(s) will be taken from the 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint that is passed to the draw call. 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha(Paint paint, int[] offsetXY) { 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't extractAlpha on a recycled bitmap"); 153336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat long nativePaint = paint != null ? paint.mNativePaint : 0; 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeExtractAlpha(mNativeBitmap, nativePaint, offsetXY); 15359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to extractAlpha on Bitmap"); 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 153896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn bm.mDensity = mDensity; 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15428cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen /** 154376d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * Given another bitmap, return true if it has the same dimensions, config, 154476d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * and pixel data as this bitmap. If any of those differ, return false. 154576d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * If other is null, return false. 154676d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed */ 154776d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed public boolean sameAs(Bitmap other) { 1548366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return this == other || (other != null && nativeSameAs(mNativeBitmap, other.mNativeBitmap)); 154976d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed } 155076d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed 155176d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed /** 15528cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * Rebuilds any caches associated with the bitmap that are used for 15538cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * drawing it. In the case of purgeable bitmaps, this call will attempt to 15548cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * ensure that the pixels have been decoded. 15558cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * If this is called on more than one bitmap in sequence, the priority is 15568cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * given in LRU order (i.e. the last bitmap called will be given highest 15578cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * priority). 15588cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * 15598cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * For bitmaps with no associated caches, this call is effectively a no-op, 15608cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * and therefore is harmless. 15618cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen */ 15628cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen public void prepareToDraw() { 15638cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen nativePrepareToDraw(mNativeBitmap); 15648cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen } 15658cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1566e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private static class BitmapFinalizer { 156736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private final long mNativeBitmap; 156802890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 156936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat BitmapFinalizer(long nativeBitmap) { 1570e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mNativeBitmap = nativeBitmap; 157102890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy } 157202890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 157302890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy @Override 1574e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy public void finalize() { 1575366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy try { 1576366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy super.finalize(); 1577366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } catch (Throwable t) { 1578366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy // Ignore 1579366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } finally { 1580366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy nativeDestructor(mNativeBitmap); 1581366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15848cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //////////// native methods 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreate(int[] colors, int offset, 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int stride, int width, int height, 1589c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik int nativeConfig, boolean mutable); 159036bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native Bitmap nativeCopy(long nativeSrcBitmap, int nativeConfig, 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable); 159236bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeDestructor(long nativeBitmap); 159336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeRecycle(long nativeBitmap); 159436bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeReconfigure(long nativeBitmap, int width, int height, 159517a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III int config, int allocSize, 159617a8bfc38a565ae96f43d36b223779be840bb50cLeon Scroggins III boolean isPremultiplied); 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 159836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeCompress(long nativeBitmap, int format, 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int quality, OutputStream stream, 16009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] tempStorage); 160136bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeErase(long nativeBitmap, int color); 160236bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeRowBytes(long nativeBitmap); 160336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeConfig(long nativeBitmap); 16048cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 160536bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeGetPixel(long nativeBitmap, int x, int y, 16061abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik boolean isPremultiplied); 160736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeGetPixels(long nativeBitmap, int[] pixels, 16081abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int offset, int stride, int x, int y, 16091abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int width, int height, boolean isPremultiplied); 16108cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 161136bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetPixel(long nativeBitmap, int x, int y, 16121abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int color, boolean isPremultiplied); 161336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetPixels(long nativeBitmap, int[] colors, 16141abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int offset, int stride, int x, int y, 16151abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int width, int height, boolean isPremultiplied); 161636bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeCopyPixelsToBuffer(long nativeBitmap, 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Buffer dst); 161836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeCopyPixelsFromBuffer(long nativeBitmap, Buffer src); 161936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native int nativeGenerationId(long nativeBitmap); 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreateFromParcel(Parcel p); 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns true on success 162336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeWriteToParcel(long nativeBitmap, 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable, 1625de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn int density, 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Parcel p); 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns a new bitmap built from the native bitmap's alpha, and the paint 162836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native Bitmap nativeExtractAlpha(long nativeBitmap, 162936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat long nativePaint, 16309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] offsetXY); 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 163236bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativePrepareToDraw(long nativeBitmap); 163336bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeHasAlpha(long nativeBitmap); 163436bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetAlphaAndPremultiplied(long nativeBitmap, 163536bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat boolean hasAlpha, 16368790be6de3644e332ec6a17c855da89ffc13a9bfLeon Scroggins III boolean isPremul); 163736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeHasMipMap(long nativeBitmap); 163836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native void nativeSetHasMipMap(long nativeBitmap, boolean hasMipMap); 163936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native boolean nativeSameAs(long nativeBitmap0, long nativeBitmap1); 164036bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat 164136bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat /* package */ final long ni() { 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNativeBitmap; 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1645