Bitmap.java revision e8222dddaf2e3da14380101e818d4254899e0c0d
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 */ 44ce0537b80087a6225273040a987414b1dd081aa0Romain Guy public final int 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; 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private byte[] mNinePatchChunk; // may be null 71ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani private int[] mLayoutBounds; // may be null 721abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private int mWidth; 731abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private int mHeight; 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mRecycled; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Package-scoped for fast access. 77dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int mDensity = getDefaultDensity(); 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn private static volatile Matrix sScaleMatrix; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn private static volatile int sDefaultDensity = -1; 8202890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 8396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn /** 8496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * For backwards compatibility, allows the app layer to change the default 8596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density when running old apps. 8696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @hide 8796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn */ 8896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn public static void setDefaultDensity(int density) { 8996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = density; 9096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 913849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 923849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy static int getDefaultDensity() { 9396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (sDefaultDensity >= 0) { 9496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 9596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 961f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy //noinspection deprecation 9796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = DisplayMetrics.DENSITY_DEVICE; 9896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 9996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 100dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1029f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Private constructor that must received an already allocated native bitmap 1039f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * int (pointer). 104ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 1059f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik @SuppressWarnings({"UnusedDeclaration"}) // called from JNI 1061abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik Bitmap(int nativeBitmap, byte[] buffer, int width, int height, int density, 1071abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik boolean isMutable, boolean isPremultiplied, 1081abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik byte[] ninePatchChunk, int[] layoutBounds) { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nativeBitmap == 0) { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("internal error: native bitmap is 0"); 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1128cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1131abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mWidth = width; 1141abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mHeight = height; 1151abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsMutable = isMutable; 1161abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = isPremultiplied; 117e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mBuffer = buffer; 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we delete this in our finalizer 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNativeBitmap = nativeBitmap; 120e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mFinalizer = new BitmapFinalizer(nativeBitmap); 121e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = ninePatchChunk; 123ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = layoutBounds; 124de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (density >= 0) { 125de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn mDensity = density; 126de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn } 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1301abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Native bitmap has been reconfigured, so set premult and cached 1311abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * width/height values 1329f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik */ 1339f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik @SuppressWarnings({"UnusedDeclaration"}) // called from JNI 1341abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik void reinit(int width, int height, boolean isPremultiplied) { 1351abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mWidth = width; 1361abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mHeight = height; 1371abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = isPremultiplied; 1389f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik } 1399f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik 1409f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik /** 14111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Returns the density for this bitmap.</p> 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The default density is the same density as the current display, 14496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * unless the current application does not support different screen 14596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * densities in which case it is 14696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * {@link android.util.DisplayMetrics#DENSITY_DEFAULT}. Note that 14796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * compatibility mode is determined by the application that was initially 14896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * loaded into a process -- applications that share the same process should 14996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * all have the same compatibility, or ensure they explicitly set the 15096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density of their bitmaps appropriately.</p> 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @return A scaling factor of the default density or {@link #DENSITY_NONE} 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if the scaling factor is unknown. 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #setDensity(int) 156a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 15711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 15811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getDensity() { 16111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return mDensity; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Specifies the density for this bitmap. When the bitmap is 16611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * drawn to a Canvas that also has a density, it will be scaled 16711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * appropriately.</p> 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param density The density scaling factor to use with this bitmap or 17011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * {@link #DENSITY_NONE} if the density is unknown. 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #getDensity() 173a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 17411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 17511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public void setDensity(int density) { 17811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn mDensity = density; 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 180c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 181c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 182c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Modifies the bitmap to have a specified width, height, and {@link 183c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * Config}, without affecting the underlying allocation backing the bitmap. 184c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * Bitmap pixel data is not re-initialized for the new configuration.</p> 185c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 186c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>This method can be used to avoid allocating a new bitmap, instead 187c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * reusing an existing bitmap's allocation for a new configuration of equal 188c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * or lesser size. If the Bitmap's allocation isn't large enough to support 189c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the new configuration, an IllegalArgumentException will be thrown and the 190c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * bitmap will not be modified.</p> 191c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 192c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>The result of {@link #getByteCount()} will reflect the new configuration, 193c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * while {@link #getAllocationByteCount()} will reflect that of the initial 194c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * configuration.</p> 195c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 196c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: This method should NOT be called on a bitmap currently used 197c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * by the view system. It does not make guarantees about how the underlying 198c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * pixel buffer is remapped to the new config, just that the allocation is 199c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * reused. Additionally, the view system does not account for bitmap 200c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * properties being modifying during use, e.g. while attached to 201c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * drawables.</p> 202c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 203c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 204c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 205c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 206c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 207c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void reconfigure(int width, int height, Config config) { 208c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik checkRecycled("Can't call reconfigure() on a recycled bitmap"); 209c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (width <= 0 || height <= 0) { 210c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik throw new IllegalArgumentException("width and height must be > 0"); 211c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 212c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (!isMutable()) { 2139c2cde0583d02ba7551877dbe7a5ecaee6defb56Chris Craik throw new IllegalStateException("only mutable bitmaps may be reconfigured"); 214c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 215c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik if (mBuffer == null) { 2161abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik throw new IllegalStateException("native-backed bitmaps may not be reconfigured"); 217c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 218c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 219c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik nativeReconfigure(mNativeBitmap, width, height, config.nativeInt, mBuffer.length); 220c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik mWidth = width; 221c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik mHeight = height; 222c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 223c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 224c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 225c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 226c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current height and config.</p> 227c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 228c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 229c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 230c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 231c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 232c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 233c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 234c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 235c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 236c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setWidth(int width) { 237c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(width, getHeight(), getConfig()); 238c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 239c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 240c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 241c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 242c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current width and config.</p> 243c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 244c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 245c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 246c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 247c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 248c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 249c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 250c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setConfig(Config) 251c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 252c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setHeight(int height) { 253c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(getWidth(), height, getConfig()); 254c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 255c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 256c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik /** 257c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>Convenience method for calling {@link #reconfigure(int, int, Config)} 258c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * with the current height and width.</p> 259c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 260c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>WARNING: this method should not be used on bitmaps currently used by 261c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the view system, see {@link #reconfigure(int, int, Config)} for more 262c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * details.</p> 263c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 264c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 265c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setWidth(int) 266c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #setHeight(int) 267c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik */ 268c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik public void setConfig(Config config) { 269c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik reconfigure(getWidth(), getHeight(), config); 270c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik } 271c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the nine patch chunk. 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param chunk The definition of the nine patch 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setNinePatchChunk(byte[] chunk) { 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = chunk; 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2828cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 284ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * Sets the layout bounds as an array of left, top, right, bottom integers 28517471d730f20ee785c9c48a99eb331a40550612bRomain Guy * @param bounds the array containing the padding values 286ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * 287ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 288ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 289ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public void setLayoutBounds(int[] bounds) { 290ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = bounds; 291ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 292ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 293ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 294a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * Free the native object associated with this bitmap, and clear the 295a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * reference to the pixel data. This will not free the pixel data synchronously; 296a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * it simply allows it to be garbage collected if there are no other references. 297a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * The bitmap is marked as "dead", meaning it will throw an exception if 298a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * getPixels() or setPixels() is called, and will draw nothing. This operation 299a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * cannot be reversed, so it should only be called if you are sure there are no 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * further uses for the bitmap. This is an advanced call, and normally need 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not be called, since the normal GC process will free up this memory when 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * there are no more references to this bitmap. 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void recycle() { 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mRecycled) { 306547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase if (nativeRecycle(mNativeBitmap)) { 307547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // return value indicates whether native pixel object was actually recycled. 308547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // false indicates that it is still in use at the native level and these 309547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // objects should not be collected now. They will be collected later when the 310547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase // Bitmap itself is collected. 311547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase mBuffer = null; 312547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase mNinePatchChunk = null; 313547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase } 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycled = true; 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if this bitmap has been recycled. If so, then it is an error 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to try to access its pixels, and the bitmap will not draw. 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the bitmap has been recycled 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isRecycled() { 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mRecycled; 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3278cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3290bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * Returns the generation ID of this bitmap. The generation ID changes 3300bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * whenever the bitmap is modified. This can be used as an efficient way to 3310bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * check if a bitmap has changed. 3320bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * 3330bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * @return The current generation ID for this bitmap. 3340bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy */ 3350bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy public int getGenerationId() { 3360bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy return nativeGenerationId(mNativeBitmap); 3370bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy } 3380bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy 3390bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy /** 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is called by methods that want to throw an exception if the bitmap 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * has already been recycled. 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkRecycled(String errorMessage) { 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mRecycled) { 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(errorMessage); 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3488cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that x and y are >= 0 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate to ensure is >= 0 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate to ensure is >= 0 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkXYSign(int x, int y) { 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x < 0) { 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be >= 0"); 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y < 0) { 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be >= 0"); 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that width and height are > 0 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width to ensure is > 0 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height to ensure is > 0 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkWidthHeight(int width, int height) { 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width <= 0) { 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be > 0"); 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height <= 0) { 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be > 0"); 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 379676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 380676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Possible bitmap configurations. A bitmap configuration describes 381676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * how pixels are stored. This affects the quality (color depth) as 382676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * well as the ability to display transparent/translucent colors. 383676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum Config { 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // these native values must match up with the enum in SkBitmap.h 386676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 387676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 388676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored as a single translucency (alpha) channel. 389676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This is very useful to efficiently store masks for instance. 390676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * No color information is stored. 391676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * With this configuration, each pixel requires 1 byte of memory. 392676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ALPHA_8 (2), 394676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 395676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 396676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes and only the RGB channels are 397676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * encoded: red is stored with 5 bits of precision (32 possible 398676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values), green is stored with 6 bits of precision (64 possible 399676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values) and blue is stored with 5 bits of precision. 400676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 401676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration can produce slight visual artifacts depending 402676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * on the configuration of the source. For instance, without 403676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * dithering, the result might show a greenish tint. To get better 404676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * results dithering should be applied. 405676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 406676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration may be useful when using opaque bitmaps 407676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * that do not require high color fidelity. 408676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RGB_565 (4), 410676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 411676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 412676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes. The three RGB color channels 413676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * and the alpha channel (translucency) are stored with a 4 bits 414676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * precision (16 possible values.) 415676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 416676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is mostly useful if the application needs 417676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * to store translucency information but also needs to save 418676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * memory. 419676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 420676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * It is recommended to use {@link #ARGB_8888} instead of this 421676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * configuration. 42225ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * 423e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * Note: as of {@link android.os.Build.VERSION_CODES#KITKAT}, 42425ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * any bitmap created with this configuration will be created 42525ba1c86945a441428194d9ebcabbf31be75a45aRomain Guy * using {@link #ARGB_8888} instead. 426676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 427676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * @deprecated Because of the poor quality of this configuration, 428676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * it is advised to use {@link #ARGB_8888} instead. 429676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 430676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @Deprecated 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ARGB_4444 (5), 432676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 433676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 434676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 4 bytes. Each channel (RGB and alpha 435676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * for translucency) is stored with 8 bits of precision (256 436676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * possible values.) 437676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 438676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is very flexible and offers the best 439676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * quality. It should be used whenever possible. 440676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ARGB_8888 (6); 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 443676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy final int nativeInt; 444676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 445676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @SuppressWarnings({"deprecation"}) 446676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy private static Config sConfigs[] = { 447676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy null, null, ALPHA_8, null, RGB_565, ARGB_4444, ARGB_8888 448676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy }; 449676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Config(int ni) { 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = ni; 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4538cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 454676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy static Config nativeToConfig(int ni) { 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sConfigs[ni]; 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4588cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4603849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the bitmap's pixels into the specified buffer (allocated by the 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * caller). An exception is thrown if the buffer is not large enough to 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * hold all of the pixels (taking into account the number of bytes per 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixel) or if the Buffer subclass is not one of the support types 4643849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (ByteBuffer, ShortBuffer, IntBuffer).</p> 4653849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>The content of the bitmap is copied into the buffer as-is. This means 4663849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * that if this bitmap stores its pixels pre-multiplied 4673849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (see {@link #isPremultiplied()}, the values in the buffer will also be 4683849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * pre-multiplied.</p> 4691f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * <p>After this method returns, the current position of the buffer is 4701f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * updated: the position is incremented by the number of elements written 4711f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * in the buffer.</p> 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsToBuffer(Buffer dst) { 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = dst.remaining(); 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dst instanceof ByteBuffer) { 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof ShortBuffer) { 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof IntBuffer) { 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4858cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long bufferSize = (long)elements << shift; 487f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long pixelSize = getByteCount(); 4888cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferSize < pixelSize) { 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4928cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsToBuffer(mNativeBitmap, dst); 4948cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // now update the buffer's position 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = dst.position(); 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position += pixelSize >> shift; 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dst.position(position); 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5023849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the pixels from the buffer, beginning at the current position, 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * overwriting the bitmap's pixels. The data in the buffer is not changed 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in any way (unlike setPixels(), which converts from unpremultipled 32bit 5053849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * to whatever the bitmap's native format is.</p> 5061f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * <p>After this method returns, the current position of the buffer is 5071f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * updated: the position is incremented by the number of elements read from 5081f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * the buffer. If you need to read the bitmap from the buffer again you must 5091f58497e7dbab1b16e97c73b65559b852d0c2803Romain Guy * first rewind the buffer.</p> 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsFromBuffer(Buffer src) { 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("copyPixelsFromBuffer called on recycled bitmap"); 5138cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = src.remaining(); 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (src instanceof ByteBuffer) { 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof ShortBuffer) { 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof IntBuffer) { 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5258cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5263849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy long bufferBytes = (long) elements << shift; 527f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long bitmapBytes = getByteCount(); 5288cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferBytes < bitmapBytes) { 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5328cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsFromBuffer(mNativeBitmap, src); 53455adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen 53555adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen // now update the buffer's position 53655adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen int position = src.position(); 53755adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen position += bitmapBytes >> shift; 53855adc145d460be4b21de0d77be1f6076c3591e3cMarco Nelissen src.position(position); 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5408cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Tries to make a new bitmap based on the dimensions of this bitmap, 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setting the new bitmap's config to the one specified, and then copying 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this bitmap's pixels into the new bitmap. If the conversion is not 54596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * supported, or the allocator fails, then this returns NULL. The returned 54696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * bitmap initially has the same density as the original. 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The desired config for the resulting bitmap 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isMutable True if the resulting bitmap should be mutable (i.e. 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * its pixels can be modified) 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the new bitmap, or null if the copy could not be made. 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap copy(Config config, boolean isMutable) { 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't copy a recycled bitmap"); 55596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn Bitmap b = nativeCopy(mNativeBitmap, config.nativeInt, isMutable); 55696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (b != null) { 5571abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik b.mIsPremultiplied = mIsPremultiplied; 55896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn b.mDensity = mDensity; 55996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 56096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return b; 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 56302d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick /** 564f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * Creates a new bitmap, scaled from an existing bitmap, when possible. If the 565f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * specified width and height are the same as the current width and height of 5669f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * the source bitmap, the source bitmap is returned and no new bitmap is 567f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * created. 56802d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * 56902d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param src The source bitmap. 57002d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstWidth The new bitmap's desired width. 57102d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstHeight The new bitmap's desired height. 57202d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param filter true if the source should be filtered. 573f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return The new scaled bitmap or the source bitmap if no scaling is required. 574790552b240c05d58407f7c14acba656b2e85c523Romain Guy * @throws IllegalArgumentException if width is <= 0, or height is <= 0 57502d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick */ 576f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy public static Bitmap createScaledBitmap(Bitmap src, int dstWidth, int dstHeight, 577f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy boolean filter) { 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m; 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // small pool of just 1 matrix 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = sScaleMatrix; 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = null; 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null) { 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = new Matrix(); 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5888cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = src.getWidth(); 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = src.getHeight(); 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sx = dstWidth / (float)width; 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sy = dstHeight / (float)height; 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.setScale(sx, sy); 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap b = Bitmap.createBitmap(src, 0, 0, width, height, m, filter); 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do we need to check for null? why not just assign everytime? 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sScaleMatrix == null) { 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = m; 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6038cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen return b; 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6058cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the source bitmap. The new bitmap may 60896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * be the same object as source, or a copy may have been made. It is 60996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap src) { 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(src, 0, 0, src.getWidth(), src.getHeight()); 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the specified subset of the source 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bitmap. The new bitmap may be the same object as source, or a copy may 618f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * have been made. It is initialized with the same density as the original 619f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * bitmap. 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 626f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return A copy of a subset of the source bitmap or the source bitmap itself. 627790552b240c05d58407f7c14acba656b2e85c523Romain Guy * @throws IllegalArgumentException if the x, y, width, height values are 628790552b240c05d58407f7c14acba656b2e85c523Romain Guy * outside of the dimensions of the source bitmap, or width is <= 0, 629790552b240c05d58407f7c14acba656b2e85c523Romain Guy * or height is <= 0 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height) { 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(source, x, y, width, height, null, false); 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6348cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from subset of the source bitmap, 637f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * transformed by the optional matrix. The new bitmap may be the 638f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same object as source, or a copy may have been made. It is 63996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 640f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * 641f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * If the source bitmap is immutable and the requested subset is the 642f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same as the source bitmap itself, then the source bitmap is 643f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * returned and no new bitmap is created. 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 65060b88edea7132ddce90f2dced07c6706f1502270Ken Shirriff * @param m Optional matrix to be applied to the pixels 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param filter true if the source should be filtered. 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Only applies if the matrix contains more than just 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * translation. 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A bitmap that represents the specified subset of source 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the x, y, width, height values are 656790552b240c05d58407f7c14acba656b2e85c523Romain Guy * outside of the dimensions of the source bitmap, or width is <= 0, 657790552b240c05d58407f7c14acba656b2e85c523Romain Guy * or height is <= 0 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m, boolean filter) { 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > source.getWidth()) { 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x + width must be <= bitmap.width()"); 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > source.getHeight()) { 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y + height must be <= bitmap.height()"); 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // check if we can just return our argument unchanged 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!source.isMutable() && x == 0 && y == 0 && width == source.getWidth() && 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height == source.getHeight() && (m == null || m.isIdentity())) { 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return source; 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6768cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int neww = width; 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newh = height; 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Canvas canvas = new Canvas(); 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bitmap; 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint paint; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect srcR = new Rect(x, y, x + width, y + height); 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF dstR = new RectF(0, 0, width, height); 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 686feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy Config newConfig = Config.ARGB_8888; 687feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy final Config config = source.getConfig(); 688feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy // GIF files generate null configs, assume ARGB_8888 689feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy if (config != null) { 690feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy switch (config) { 691feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case RGB_565: 692feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.RGB_565; 693feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 694feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ALPHA_8: 695feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ALPHA_8; 696feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 697676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy //noinspection deprecation 698feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_4444: 699feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_8888: 700feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy default: 701feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ARGB_8888; 702feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 703feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 704feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 705d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null || m.isIdentity()) { 707d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, newConfig, source.hasAlpha()); 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = null; // not needed 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 710d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy final boolean transformed = !m.rectStaysRect(); 711d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF deviceR = new RectF(); 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.mapRect(deviceR, dstR); 714d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project neww = Math.round(deviceR.width()); 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newh = Math.round(deviceR.height()); 717d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 718d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, transformed ? Config.ARGB_8888 : newConfig, 719d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy transformed || source.hasAlpha()); 720d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.translate(-deviceR.left, -deviceR.top); 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.concat(m); 723d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = new Paint(); 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setFilterBitmap(filter); 726d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (transformed) { 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setAntiAlias(true); 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 73096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The new bitmap was created from a known bitmap source so assume that 73211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // they use the same density 73311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn bitmap.mDensity = source.mDensity; 7341abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik bitmap.mIsPremultiplied = source.mIsPremultiplied; 73596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn 73696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.setBitmap(bitmap); 73796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.drawBitmap(source, srcR, dstR, paint); 7386311d0a079702b29984c0d31937345be105e1a5eDianne Hackborn canvas.setBitmap(null); 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bitmap; 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7428cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 74496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 74596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int width, int height, Config config) { 753d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy return createBitmap(width, height, config, true); 754d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 755d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 756d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy /** 757d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * Returns a mutable bitmap with the specified width and height. Its 758dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 759dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 760dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 761dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 762dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 763dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 764dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. 765dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0 766dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 767dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int width, 768dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int height, Config config) { 769dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(display, width, height, config, true); 770dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 771dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 772dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 773dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 774d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * initial density is as per {@link #getDensity}. 775d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 776d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param width The width of the bitmap 777d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param height The height of the bitmap 778d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param config The bitmap config to create. 779d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 780d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * bitmap as opaque. Doing so will clear the bitmap in black 781d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * instead of transparent. 782d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 783d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @throws IllegalArgumentException if the width or height are <= 0 784d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy */ 785d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy private static Bitmap createBitmap(int width, int height, Config config, boolean hasAlpha) { 786dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, width, height, config, hasAlpha); 787dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 788dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 789dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 790dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 791dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 792dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 793dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 794dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 795dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 796dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 797dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. 798dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 799dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bitmap as opaque. Doing so will clear the bitmap in black 800dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * instead of transparent. 801dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 802dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0 803dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 804dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn private static Bitmap createBitmap(DisplayMetrics display, int width, int height, 805dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn Config config, boolean hasAlpha) { 806e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 807e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 808e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreate(null, 0, width, width, height, config.nativeInt, true); 810dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (display != null) { 811dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn bm.mDensity = display.densityDpi; 812dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 813d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (config == Config.ARGB_8888 && !hasAlpha) { 8141373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate nativeErase(bm.mNativeBitmap, 0xff000000); 815d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy nativeSetHasAlpha(bm.mNativeBitmap, hasAlpha); 816d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 8173b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // No need to initialize the bitmap to zeroes with other configs; 8183b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // it is backed by a VM byte array which is by definition preinitialized 8193b748a44c6bd2ea05fe16839caf73dbe50bd7ae9Romain Guy // to all zeroes. 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8228cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 82596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 82696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset Number of values to skip before the first color in the 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * array of colors. 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride Number of colors in the array between rows (must be >= 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * width or <= -width). 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int offset, int stride, 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, int height, Config config) { 843dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, colors, offset, stride, width, height, config); 844dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 845dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 846dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 847dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a immutable bitmap with the specified width and height, with each 848dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 849dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 850dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 851dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 852dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 853dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param colors Array of {@link Color} used to initialize the pixels. 854dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param offset Number of values to skip before the first color in the 855dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * array of colors. 856dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param stride Number of colors in the array between rows (must be >= 857dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * width or <= -width). 858dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 859dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 860dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. If the config does not 861dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * support per-pixel alpha (e.g. RGB_565), then the alpha 862dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bytes in the colors[] will be ignored (assumed to be FF) 863dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0, or if 864dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * the color array's length is less than the number of pixels. 865dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 866dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int colors[], 867dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int offset, int stride, int width, int height, Config config) { 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = colors.length; 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) || lastScanline < 0 || 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (lastScanline + width > length)) { 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 879e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 880e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 881e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 882dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn Bitmap bm = nativeCreate(colors, offset, stride, width, height, 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project config.nativeInt, false); 884dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (display != null) { 885dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn bm.mDensity = display.densityDpi; 886dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 887dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return bm; 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 89296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 89396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This array must be at least as large as width * height. 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int width, int height, Config config) { 906dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(null, colors, 0, width, width, height, config); 907dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 908dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn 909dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn /** 910dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * Returns a immutable bitmap with the specified width and height, with each 911dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 912dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * initial density is determined from the given {@link DisplayMetrics}. 913dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * 914dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param display Display metrics for the display this bitmap will be 915dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * drawn on. 916dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param colors Array of {@link Color} used to initialize the pixels. 917dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * This array must be at least as large as width * height. 918dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param width The width of the bitmap 919dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param height The height of the bitmap 920dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @param config The bitmap config to create. If the config does not 921dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * support per-pixel alpha (e.g. RGB_565), then the alpha 922dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * bytes in the colors[] will be ignored (assumed to be FF) 923dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * @throws IllegalArgumentException if the width or height are <= 0, or if 924dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn * the color array's length is less than the number of pixels. 925dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn */ 926dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn public static Bitmap createBitmap(DisplayMetrics display, int colors[], 927dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn int width, int height, Config config) { 928dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn return createBitmap(display, colors, 0, width, width, height, config); 9299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an optional array of private data, used by the UI system for 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * some bitmaps. Not intended to be called by applications. 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public byte[] getNinePatchChunk() { 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNinePatchChunk; 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 940ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 941ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @return the layout padding [left, right, top, bottom] 942ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 943ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public int[] getLayoutBounds() { 944ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani return mLayoutBounds; 945ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 946ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 947ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Specifies the known formats a bitmap can be compressed into 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum CompressFormat { 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEG (0), 9522305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora PNG (1), 9532305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora WEBP (2); 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CompressFormat(int nativeInt) { 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = nativeInt; 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nativeInt; 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Number of bytes of temp storage we use for communicating between the 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * native compressor and the java OutputStream. 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final static int WORKING_COMPRESS_STORAGE = 4096; 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write a compressed version of the bitmap to the specified outputstream. 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this returns true, the bitmap can be reconstructed by passing a 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * corresponding inputstream to BitmapFactory.decodeStream(). Note: not 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * all Formats support all bitmap configs directly, so it is possible that 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the returned bitmap from BitmapFactory could be in a different bitdepth, 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and/or may have lost per-pixel alpha (e.g. JPEG only supports opaque 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixels). 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param format The format of the compressed image 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param quality Hint to the compressor, 0-100. 0 meaning compress for 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * small size, 100 meaning compress for max quality. Some 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * formats, like PNG which is lossless, will ignore the 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * quality setting 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stream The outputstream to write the compressed data. 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if successfully compressed to the specified stream. 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean compress(CompressFormat format, int quality, OutputStream stream) { 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't compress a recycled bitmap"); 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do explicit check before calling the native method 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stream == null) { 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new NullPointerException(); 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (quality < 0 || quality > 100) { 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("quality must be 0..100"); 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeCompress(mNativeBitmap, format.nativeInt, quality, 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project stream, new byte[WORKING_COMPRESS_STORAGE]); 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9968cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if the bitmap is marked as mutable (i.e. can be drawn into) 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isMutable() { 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mIsMutable; 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10043849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy /** 10053849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Indicates whether pixels stored in this bitmaps are stored pre-multiplied. 10063849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * When a pixel is pre-multiplied, the RGB components have been multiplied by 10073849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * the alpha component. For instance, if the original color is a 50% 10083849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * translucent red <code>(128, 255, 0, 0)</code>, the pre-multiplied form is 10093849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <code>(128, 128, 0, 0)</code>.</p> 10103849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 10113849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>This method always returns false if {@link #getConfig()} is 10124ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * {@link Bitmap.Config#RGB_565}.</p> 10134ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * 10144ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * <p>This method only returns true if {@link #hasAlpha()} returns true. 10154ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * A bitmap with no alpha channel can be used both as a pre-multiplied and 10164ff0cf4b83605bff630c4e6f1fabe4f72a3f93a1Romain Guy * as a non pre-multiplied bitmap.</p> 10171abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10181abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>Only pre-multiplied bitmaps may be drawn by the view system or 10191abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * {@link Canvas}. If a non-pre-multiplied bitmap with an alpha channel is 10201abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * drawn to a Canvas, a RuntimeException will be thrown.</p> 10211abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10223849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @return true if the underlying pixels have been pre-multiplied, false 10233849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * otherwise 10241abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10251abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see Bitmap#setPremultiplied(boolean) 10261abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see BitmapFactory.Options#inPremultiplied 10273849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy */ 10283849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy public final boolean isPremultiplied() { 10291abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mIsPremultiplied && getConfig() != Config.RGB_565 && hasAlpha(); 10301abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik } 10311abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik 10321abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik /** 10331abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * Sets whether the bitmap should treat its data as pre-multiplied. 10341abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10351abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>Bitmaps are always treated as pre-multiplied by the view system and 10361abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * {@link Canvas} for performance reasons. Storing un-pre-multiplied data in 10371abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * a Bitmap (through {@link #setPixel}, {@link #setPixels}, or {@link 10381abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * BitmapFactory.Options#inPremultiplied BitmapFactory.Options.inPremultiplied}) 10391abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * can lead to incorrect blending if drawn by the framework.</p> 10401abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10411abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * <p>This method will not affect the behavior of a bitmap without an alpha 10421abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * channel, or if {@link #hasAlpha()} returns false.</p> 10431abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * 10441abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see Bitmap#isPremultiplied() 10451abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik * @see BitmapFactory.Options#inPremultiplied 10461abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik */ 10471abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik public final void setPremultiplied(boolean premultiplied) { 10481abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik mIsPremultiplied = premultiplied; 10493849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy } 10503849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's width */ 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getWidth() { 10531abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mWidth; 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's height */ 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getHeight() { 10581abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return mHeight; 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10608cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 106211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 106311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10652784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledWidth(Canvas canvas) { 106611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, canvas.mDensity); 10672784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 10682784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 10692784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 107011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 107111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 10722784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 10732784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledHeight(Canvas canvas) { 107411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, canvas.mDensity); 107511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 107611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 107711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 107811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 107911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 108011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 108111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(DisplayMetrics metrics) { 108211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, metrics.densityDpi); 108311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 108411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 108511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 108611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 108711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 108811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 108911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(DisplayMetrics metrics) { 109011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, metrics.densityDpi); 10912784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 10922784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 10932784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 10942784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * Convenience method that returns the width of this bitmap divided 10952784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * by the density scale factor. 10962784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * 109711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 10982784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * @return The scaled width of this bitmap, according to the density scale factor. 10992784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 110011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(int targetDensity) { 110111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, targetDensity); 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Convenience method that returns the height of this bitmap divided 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by the density scale factor. 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 110811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The scaled height of this bitmap, according to the density scale factor. 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 111111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(int targetDensity) { 111211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, targetDensity); 111311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 111411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 111511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 111611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @hide 111711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 111811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn static public int scaleFromDensity(int size, int sdensity, int tdensity) { 11190b68477f8287fe5ddac1beb1c9d0811ded034dadRomain Guy if (sdensity == DENSITY_NONE || tdensity == DENSITY_NONE || sdensity == tdensity) { 112011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return size; 11212784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 112211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 112311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Scale by tdensity / sdensity, rounding up. 1124366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return ((size * tdensity) + (sdensity >> 1)) / sdensity; 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 112611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return the number of bytes between rows in the bitmap's pixels. Note that 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this refers to the pixels as stored natively by the bitmap. If you call 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * getPixels() or setPixels(), then the pixels are uniformly treated as 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32bit values, packed according to the Color class. 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1133e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * <p>As of {@link android.os.Build.VERSION_CODES#KITKAT}, this method 11349f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * should not be used to calculate the memory usage of the bitmap. Instead, 11359f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * see {@link #getAllocationByteCount()}. 11369f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return number of bytes between rows of the native bitmap pixels. 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getRowBytes() { 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeRowBytes(mNativeBitmap); 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11428cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11449f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Returns the minimum number of bytes that can be used to store this bitmap's pixels. 11459f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 1146e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * <p>As of {@link android.os.Build.VERSION_CODES#KITKAT}, the result of this method can 11479f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * no longer be used to determine memory usage of a bitmap. See {@link 1148c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #getAllocationByteCount()}.</p> 1149f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson */ 1150f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson public final int getByteCount() { 1151f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson // int result permits bitmaps up to 46,340 x 46,340 1152f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson return getRowBytes() * getHeight(); 1153f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson } 1154f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson 1155f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson /** 11569f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * Returns the size of the allocated memory used to store this bitmap's pixels. 11579f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 11589f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * <p>This can be larger than the result of {@link #getByteCount()} if a bitmap is reused to 1159c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * decode other bitmaps of smaller size, or by manual reconfiguration. See {@link 1160c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #reconfigure(int, int, Config)}, {@link #setWidth(int)}, {@link #setHeight(int)}, {@link 1161c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * #setConfig(Bitmap.Config)}, and {@link BitmapFactory.Options#inBitmap 1162c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * BitmapFactory.Options.inBitmap}. If a bitmap is not modified in this way, this value will be 1163c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * the same as that returned by {@link #getByteCount()}.</p> 1164c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * 1165c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * <p>This value will not change over the lifetime of a Bitmap.</p> 11669f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik * 1167c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik * @see #reconfigure(int, int, Config) 11689f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik */ 11699f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik public final int getAllocationByteCount() { 11709f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik return mBuffer.length; 11719f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik } 11729f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik 11739f58361e98be7386a4eadd3aa254e9b7d09d0a3bChris Craik /** 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If the bitmap's internal config is in one of the public formats, return 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that config, otherwise return null. 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Config getConfig() { 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Config.nativeToConfig(nativeConfig(mNativeBitmap)); 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1181a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** Returns true if the bitmap's config supports per-pixel alpha, and 1182a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * if the pixels may contain non-opaque alpha values. For some configs, 1183a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * this is always false (e.g. RGB_565), since they do not support per-pixel 1184a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * alpha. However, for configs that do, the bitmap may be flagged to be 1185a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * known that all of its pixels are opaque. In this case hasAlpha() will 1186a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * also return false. If a config such as ARGB_8888 is not so flagged, 1187a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * it will return true by default. 1188a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean hasAlpha() { 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeHasAlpha(mNativeBitmap); 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1194a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * Tell the bitmap if all of the pixels are known to be opaque (false) 1195a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * or if some of the pixels may contain non-opaque alpha values (true). 1196366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * Note, for some configs (e.g. RGB_565) this call is ignored, since it 1197366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * does not support per-pixel alpha values. 1198a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * 1199a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * This is meant as a drawing hint, as in some cases a bitmap that is known 1200a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * to be opaque can take a faster drawing case than one that may have 1201a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * non-opaque per-pixel alpha values. 1202a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 1203a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed public void setHasAlpha(boolean hasAlpha) { 1204a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed nativeSetHasAlpha(mNativeBitmap, hasAlpha); 1205a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed } 1206a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed 1207a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** 1208713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Indicates whether the renderer responsible for drawing this 1209713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * bitmap should attempt to use mipmaps when this bitmap is drawn 1210713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * scaled down. 1211713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1212713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * If you know that you are going to draw this bitmap at less than 1213713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 50% of its original size, you may be able to obtain a higher 1214713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * quality 1215713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1216713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * This property is only a suggestion that can be ignored by the 1217713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * renderer. It is not guaranteed to have any effect. 1218713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1219713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @return true if the renderer should attempt to use mipmaps, 1220713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * false otherwise 1221713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1222713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @see #setHasMipMap(boolean) 1223713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy */ 1224713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy public final boolean hasMipMap() { 1225713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy return nativeHasMipMap(mNativeBitmap); 1226713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy } 1227713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy 1228713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy /** 1229713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Set a hint for the renderer responsible for drawing this bitmap 1230713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * indicating that it should attempt to use mipmaps when this bitmap 1231713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * is drawn scaled down. 1232713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1233713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * If you know that you are going to draw this bitmap at less than 1234713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 50% of its original size, you may be able to obtain a higher 1235713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * quality by turning this property on. 1236713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1237713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * Note that if the renderer respects this hint it might have to 1238713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * allocate extra memory to hold the mipmap levels for this bitmap. 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 * @param hasMipMap indicates whether the renderer should attempt 1244713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * to use mipmaps 1245713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * 1246713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy * @see #hasMipMap() 1247713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy */ 1248713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy public final void setHasMipMap(boolean hasMipMap) { 1249713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy nativeSetHasMipMap(mNativeBitmap, hasMipMap); 1250713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy } 1251713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy 1252713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy /** 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the bitmap's pixels with the specified {@link Color}. 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable. 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void eraseColor(int c) { 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't erase a recycled bitmap"); 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException("cannot erase immutable bitmaps"); 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeErase(mNativeBitmap, c); 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the {@link Color} at the specified location. Throws an exception 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if x or y are out of bounds (negative or >= to the width or height 12683849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * respectively). The returned color is a non-premultiplied ARGB value. 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate (0...width-1) of the pixel to return 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate (0...height-1) of the pixel to return 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The argb {@link Color} at the specified coordinate 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y exceed the bitmap's bounds 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getPixel(int x, int y) { 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixel() on a recycled bitmap"); 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 12781abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik return nativeGetPixel(mNativeBitmap, x, y, mIsPremultiplied); 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12808cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns in pixels[] a copy of the data in the bitmap. Each value is 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a packed int representing a {@link Color}. The stride parameter allows 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the caller to allow for gaps in the returned pixels array between 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows. For normal packed results, just pass width for the stride value. 12863849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * The returned colors are non-premultiplied ARGB values. 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The array to receive the bitmap's colors 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The first index to write into pixels[] 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of entries in pixels[] to skip between 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows (must be >= bitmap's width). Can be negative. 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to read from 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to read from 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels to read from each row 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to read 12983849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height exceed the 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds of the bitmap, or if abs(stride) < width. 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void getPixels(int[] pixels, int offset, int stride, 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int x, int y, int width, int height) { 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixels() on a recycled bitmap"); 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeGetPixels(mNativeBitmap, pixels, offset, stride, 13121abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik x, y, width, height, mIsPremultiplied); 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13148cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixel() 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixel() 13183849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate of the pixel 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate of the pixel 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelAccess(int x, int y) { 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x >= getWidth()) { 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be < bitmap.width()"); 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y >= getHeight()) { 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be < bitmap.height()"); 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixels() 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixels() 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x left edge of the area of pixels to access 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y top edge of the area of pixels to access 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width of the area of pixels to access 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height of the area of pixels to access 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset offset into pixels[] array 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride number of elements in pixels[] between each logical row 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels array to hold the area of pixels being accessed 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelsAccess(int x, int y, int width, int height, 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset, int stride, int pixels[]) { 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width < 0) { 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be >= 0"); 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height < 0) { 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be >= 0"); 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > getWidth()) { 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "x + width must be <= bitmap.width()"); 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > getHeight()) { 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "y + height must be <= bitmap.height()"); 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = pixels.length; 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || lastScanline < 0 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (lastScanline + width > length)) { 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13728cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13743849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Write the specified {@link Color} into the bitmap (assuming it is 13753849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * mutable) at the x,y coordinate. The color must be a 13763849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * non-premultiplied ARGB value.</p> 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the pixel to replace (0...width-1) 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the pixel to replace (0...height-1) 13803849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @param color The ARGB color to write into the bitmap 13813849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y are outside of the bitmap's 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds. 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixel(int x, int y, int color) { 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixel() on a recycled bitmap"); 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 13921abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik nativeSetPixel(mNativeBitmap, x, y, color, mIsPremultiplied); 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13948cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13963849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Replace pixels in the bitmap with the colors in the array. Each element 13973849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * in the array is a packed int prepresenting a non-premultiplied ARGB 13983849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * {@link Color}.</p> 13999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The colors to write to the bitmap 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The index of the first color to read from pixels[] 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of colors in pixels[] to skip between rows. 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Normally this value will be the same as the width of 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap, but it can be larger (or negative). 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to write to in 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to write to in 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of colors to copy from pixels[] per row 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to write to the bitmap 14113849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height are outside of 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap's bounds. 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixels(int[] pixels, int offset, int stride, 14193849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy int x, int y, int width, int height) { 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixels() on a recycled bitmap"); 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeSetPixels(mNativeBitmap, pixels, offset, stride, 14291abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik x, y, width, height, mIsPremultiplied); 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14318cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final Parcelable.Creator<Bitmap> CREATOR 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new Parcelable.Creator<Bitmap>() { 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Rebuilds a bitmap previously stored with writeToParcel(). 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to read the bitmap from 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return a new bitmap created from the data in the parcel 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap createFromParcel(Parcel p) { 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreateFromParcel(p); 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to unparcel Bitmap"); 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap[] newArray(int size) { 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new Bitmap[size]; 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * No special parcel contents. 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int describeContents() { 1456b6377170960d40e66858d8b4d335a95eac773762Bart Sears return 0; 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write the bitmap and its pixels to the parcel. The bitmap can be 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rebuilt from the parcel by calling CREATOR.createFromParcel(). 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to write the bitmap data into 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel p, int flags) { 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't parcel a recycled bitmap"); 1466de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (!nativeWriteToParcel(mNativeBitmap, mIsMutable, mDensity, p)) { 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("native writeToParcel failed"); 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This may be drawn with Canvas.drawBitmap(), where the color(s) will be 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * taken from the paint that is passed to the draw call. 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the alpha channel of the original bitmap. 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha() { 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return extractAlpha(null, null); 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14818cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * These values may be affected by the optional Paint parameter, which 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can contain its own alpha, and may also contain a MaskFilter which 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * could change the actual dimensions of the resulting bitmap (e.g. 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a blur maskfilter might enlarge the resulting bitmap). If offsetXY 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is not null, it returns the amount to offset the returned bitmap so 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that it will logically align with the original. For example, if the 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint contains a blur of radius 2, then offsetXY[] would contains 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * -2, -2, so that drawing the alpha bitmap offset by (-2, -2) and then 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawing the original would result in the blur visually aligning with 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the original. 149496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 149596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The initial density of the returned bitmap is the same as the original's. 149696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param paint Optional paint used to modify the alpha values in the 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * resulting bitmap. Pass null for default behavior. 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offsetXY Optional array that returns the X (index 0) and Y 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (index 1) offset needed to position the returned bitmap 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * so that it visually lines up with the original. 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the (optionally modified by paint) alpha 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * channel of the original bitmap. This may be drawn with 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Canvas.drawBitmap(), where the color(s) will be taken from the 15059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint that is passed to the draw call. 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha(Paint paint, int[] offsetXY) { 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't extractAlpha on a recycled bitmap"); 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nativePaint = paint != null ? paint.mNativePaint : 0; 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeExtractAlpha(mNativeBitmap, nativePaint, offsetXY); 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to extractAlpha on Bitmap"); 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 151496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn bm.mDensity = mDensity; 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15188cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen /** 151976d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * Given another bitmap, return true if it has the same dimensions, config, 152076d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * and pixel data as this bitmap. If any of those differ, return false. 152176d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * If other is null, return false. 152276d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed */ 152376d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed public boolean sameAs(Bitmap other) { 1524366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return this == other || (other != null && nativeSameAs(mNativeBitmap, other.mNativeBitmap)); 152576d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed } 152676d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed 152776d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed /** 15288cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * Rebuilds any caches associated with the bitmap that are used for 15298cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * drawing it. In the case of purgeable bitmaps, this call will attempt to 15308cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * ensure that the pixels have been decoded. 15318cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * If this is called on more than one bitmap in sequence, the priority is 15328cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * given in LRU order (i.e. the last bitmap called will be given highest 15338cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * priority). 15348cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * 15358cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * For bitmaps with no associated caches, this call is effectively a no-op, 15368cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * and therefore is harmless. 15378cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen */ 15388cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen public void prepareToDraw() { 15398cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen nativePrepareToDraw(mNativeBitmap); 15408cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen } 15418cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1542e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private static class BitmapFinalizer { 1543e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private final int mNativeBitmap; 154402890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 1545e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy BitmapFinalizer(int nativeBitmap) { 1546e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mNativeBitmap = nativeBitmap; 154702890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy } 154802890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 154902890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy @Override 1550e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy public void finalize() { 1551366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy try { 1552366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy super.finalize(); 1553366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } catch (Throwable t) { 1554366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy // Ignore 1555366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } finally { 1556366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy nativeDestructor(mNativeBitmap); 1557366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15608cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //////////// native methods 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreate(int[] colors, int offset, 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int stride, int width, int height, 1565c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik int nativeConfig, boolean mutable); 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCopy(int srcBitmap, int nativeConfig, 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable); 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeDestructor(int nativeBitmap); 1569547e66531d521eb1eadac87edb0f79f8c2f1bbe0Chet Haase private static native boolean nativeRecycle(int nativeBitmap); 1570c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik private static native void nativeReconfigure(int nativeBitmap, int width, int height, 1571c84d203da21c3ae3ded94c79c035d41b27809b3bChris Craik int config, int allocSize); 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native boolean nativeCompress(int nativeBitmap, int format, 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int quality, OutputStream stream, 15759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] tempStorage); 15769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeErase(int nativeBitmap, int color); 15779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeRowBytes(int nativeBitmap); 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeConfig(int nativeBitmap); 15798cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15801abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik private static native int nativeGetPixel(int nativeBitmap, int x, int y, 15811abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik boolean isPremultiplied); 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeGetPixels(int nativeBitmap, int[] pixels, 15831abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int offset, int stride, int x, int y, 15841abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int width, int height, boolean isPremultiplied); 15858cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeSetPixel(int nativeBitmap, int x, int y, 15871abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int color, boolean isPremultiplied); 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeSetPixels(int nativeBitmap, int[] colors, 15891abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int offset, int stride, int x, int y, 15901abf5d62429e5a9329520b2f7c2b5a5e7a8e72ecChris Craik int width, int height, boolean isPremultiplied); 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeCopyPixelsToBuffer(int nativeBitmap, 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Buffer dst); 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeCopyPixelsFromBuffer(int nb, Buffer src); 15940bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy private static native int nativeGenerationId(int nativeBitmap); 15959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreateFromParcel(Parcel p); 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns true on success 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native boolean nativeWriteToParcel(int nativeBitmap, 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable, 1600de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn int density, 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Parcel p); 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns a new bitmap built from the native bitmap's alpha, and the paint 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeExtractAlpha(int nativeBitmap, 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nativePaint, 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] offsetXY); 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16078cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen private static native void nativePrepareToDraw(int nativeBitmap); 1608713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy private static native boolean nativeHasAlpha(int nativeBitmap); 1609a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed private static native void nativeSetHasAlpha(int nBitmap, boolean hasAlpha); 1610713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy private static native boolean nativeHasMipMap(int nativeBitmap); 1611713e1bb9df6bdfc21bd5c40d1a6ecf6c822a4be5Romain Guy private static native void nativeSetHasMipMap(int nBitmap, boolean hasMipMap); 161276d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed private static native boolean nativeSameAs(int nb0, int nb1); 1613d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 16149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* package */ final int ni() { 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNativeBitmap; 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1618