Bitmap.java revision 3849f93b3c2b29ca3873b602897dccac039a0b98
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. 48e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy * Made public for quick access from drawing methods -- do NOT modify 49e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy * from outside this class. 50e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy * 51e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy * @hide 52e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy */ 53e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy public byte[] mBuffer; 54e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 552361098da3b9d9c3eeed410dc72ba62c0e9177cfRomain Guy @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"}) // Keep to finalize native resources 56e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private final BitmapFinalizer mFinalizer; 57e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final boolean mIsMutable; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private byte[] mNinePatchChunk; // may be null 60ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani private int[] mLayoutBounds; // may be null 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mWidth = -1; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mHeight = -1; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mRecycled; 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Package-scoped for fast access. 663849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy int mDensity = sDefaultDensity = getDefaultDensity(); 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn private static volatile Matrix sScaleMatrix; 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7096e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn private static volatile int sDefaultDensity = -1; 7102890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 7296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn /** 7396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * For backwards compatibility, allows the app layer to change the default 7496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density when running old apps. 7596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @hide 7696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn */ 7796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn public static void setDefaultDensity(int density) { 7896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = density; 7996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 803849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 813849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy static int getDefaultDensity() { 8296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (sDefaultDensity >= 0) { 8396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 8496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 8596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn sDefaultDensity = DisplayMetrics.DENSITY_DEVICE; 8696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return sDefaultDensity; 8796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 8896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @noinspection UnusedDeclaration 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* Private constructor that must received an already allocated native 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bitmap int (pointer). 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project This can be called from JNI code. 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 973849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy Bitmap(int nativeBitmap, byte[] buffer, boolean isMutable, byte[] ninePatchChunk, 98e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy int density) { 99ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani this(nativeBitmap, buffer, isMutable, ninePatchChunk, null, density); 100ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 101ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 102ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 103ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @noinspection UnusedDeclaration 104ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 105ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /* Private constructor that must received an already allocated native 106ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani bitmap int (pointer). 107ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 108ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani This can be called from JNI code. 109ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 1103849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy Bitmap(int nativeBitmap, byte[] buffer, boolean isMutable, byte[] ninePatchChunk, 111ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani int[] layoutBounds, int density) { 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nativeBitmap == 0) { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("internal error: native bitmap is 0"); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1158cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 116e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mBuffer = buffer; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we delete this in our finalizer 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNativeBitmap = nativeBitmap; 119e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mFinalizer = new BitmapFinalizer(nativeBitmap); 120e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsMutable = isMutable; 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 /** 13011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Returns the density for this bitmap.</p> 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The default density is the same density as the current display, 13396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * unless the current application does not support different screen 13496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * densities in which case it is 13596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * {@link android.util.DisplayMetrics#DENSITY_DEFAULT}. Note that 13696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * compatibility mode is determined by the application that was initially 13796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * loaded into a process -- applications that share the same process should 13896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * all have the same compatibility, or ensure they explicitly set the 13996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * density of their bitmaps appropriately.</p> 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * @return A scaling factor of the default density or {@link #DENSITY_NONE} 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if the scaling factor is unknown. 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #setDensity(int) 145a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 14611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 14711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getDensity() { 15011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return mDensity; 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * <p>Specifies the density for this bitmap. When the bitmap is 15511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * drawn to a Canvas that also has a density, it will be scaled 15611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * appropriately.</p> 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 15811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param density The density scaling factor to use with this bitmap or 15911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * {@link #DENSITY_NONE} if the density is unknown. 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #getDensity() 162a53b828635fce8b6b2d3e3377d74d72070056623Dianne Hackborn * @see android.util.DisplayMetrics#DENSITY_DEFAULT 16311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see android.util.DisplayMetrics#densityDpi 16411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @see #DENSITY_NONE 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public void setDensity(int density) { 16711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn mDensity = density; 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the nine patch chunk. 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param chunk The definition of the nine patch 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setNinePatchChunk(byte[] chunk) { 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = chunk; 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1808cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 182ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * Sets the layout bounds as an array of left, top, right, bottom integers 18317471d730f20ee785c9c48a99eb331a40550612bRomain Guy * @param bounds the array containing the padding values 184ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * 185ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 186ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 187ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public void setLayoutBounds(int[] bounds) { 188ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani mLayoutBounds = bounds; 189ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 190ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 191ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 192a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * Free the native object associated with this bitmap, and clear the 193a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * reference to the pixel data. This will not free the pixel data synchronously; 194a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * it simply allows it to be garbage collected if there are no other references. 195a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * The bitmap is marked as "dead", meaning it will throw an exception if 196a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * getPixels() or setPixels() is called, and will draw nothing. This operation 197a383b3f646cbc1fd870f2694d4fac24340834916Patrick Dubroy * cannot be reversed, so it should only be called if you are sure there are no 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * further uses for the bitmap. This is an advanced call, and normally need 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not be called, since the normal GC process will free up this memory when 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * there are no more references to this bitmap. 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void recycle() { 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mRecycled) { 204e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mBuffer = null; 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeRecycle(mNativeBitmap); 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNinePatchChunk = null; 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycled = true; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if this bitmap has been recycled. If so, then it is an error 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to try to access its pixels, and the bitmap will not draw. 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the bitmap has been recycled 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isRecycled() { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mRecycled; 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2208cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2220bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * Returns the generation ID of this bitmap. The generation ID changes 2230bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * whenever the bitmap is modified. This can be used as an efficient way to 2240bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * check if a bitmap has changed. 2250bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * 2260bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy * @return The current generation ID for this bitmap. 2270bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy */ 2280bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy public int getGenerationId() { 2290bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy return nativeGenerationId(mNativeBitmap); 2300bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy } 2310bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy 2320bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy /** 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is called by methods that want to throw an exception if the bitmap 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * has already been recycled. 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkRecycled(String errorMessage) { 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mRecycled) { 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(errorMessage); 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2418cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that x and y are >= 0 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate to ensure is >= 0 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate to ensure is >= 0 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkXYSign(int x, int y) { 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x < 0) { 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be >= 0"); 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y < 0) { 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be >= 0"); 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Common code for checking that width and height are > 0 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width to ensure is > 0 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height to ensure is > 0 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void checkWidthHeight(int width, int height) { 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width <= 0) { 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be > 0"); 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height <= 0) { 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be > 0"); 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 272676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 273676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Possible bitmap configurations. A bitmap configuration describes 274676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * how pixels are stored. This affects the quality (color depth) as 275676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * well as the ability to display transparent/translucent colors. 276676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum Config { 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // these native values must match up with the enum in SkBitmap.h 279676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 280676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 281676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored as a single translucency (alpha) channel. 282676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This is very useful to efficiently store masks for instance. 283676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * No color information is stored. 284676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * With this configuration, each pixel requires 1 byte of memory. 285676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ALPHA_8 (2), 287676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 288676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 289676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes and only the RGB channels are 290676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * encoded: red is stored with 5 bits of precision (32 possible 291676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values), green is stored with 6 bits of precision (64 possible 292676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * values) and blue is stored with 5 bits of precision. 293676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 294676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration can produce slight visual artifacts depending 295676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * on the configuration of the source. For instance, without 296676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * dithering, the result might show a greenish tint. To get better 297676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * results dithering should be applied. 298676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 299676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration may be useful when using opaque bitmaps 300676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * that do not require high color fidelity. 301676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RGB_565 (4), 303676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 304676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 305676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 2 bytes. The three RGB color channels 306676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * and the alpha channel (translucency) are stored with a 4 bits 307676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * precision (16 possible values.) 308676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 309676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is mostly useful if the application needs 310676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * to store translucency information but also needs to save 311676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * memory. 312676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 313676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * It is recommended to use {@link #ARGB_8888} instead of this 314676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * configuration. 315676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 316676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * @deprecated Because of the poor quality of this configuration, 317676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * it is advised to use {@link #ARGB_8888} instead. 318676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 319676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @Deprecated 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ARGB_4444 (5), 321676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 322676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy /** 323676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * Each pixel is stored on 4 bytes. Each channel (RGB and alpha 324676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * for translucency) is stored with 8 bits of precision (256 325676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * possible values.) 326676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * 327676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * This configuration is very flexible and offers the best 328676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy * quality. It should be used whenever possible. 329676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy */ 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ARGB_8888 (6); 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 332676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy final int nativeInt; 333676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 334676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy @SuppressWarnings({"deprecation"}) 335676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy private static Config sConfigs[] = { 336676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy null, null, ALPHA_8, null, RGB_565, ARGB_4444, ARGB_8888 337676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy }; 338676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Config(int ni) { 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = ni; 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3428cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 343676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy static Config nativeToConfig(int ni) { 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sConfigs[ni]; 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3478cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3493849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the bitmap's pixels into the specified buffer (allocated by the 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * caller). An exception is thrown if the buffer is not large enough to 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * hold all of the pixels (taking into account the number of bytes per 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixel) or if the Buffer subclass is not one of the support types 3533849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (ByteBuffer, ShortBuffer, IntBuffer).</p> 3543849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>The content of the bitmap is copied into the buffer as-is. This means 3553849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * that if this bitmap stores its pixels pre-multiplied 3563849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * (see {@link #isPremultiplied()}, the values in the buffer will also be 3573849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * pre-multiplied.</p> 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsToBuffer(Buffer dst) { 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = dst.remaining(); 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dst instanceof ByteBuffer) { 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof ShortBuffer) { 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (dst instanceof IntBuffer) { 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3718cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long bufferSize = (long)elements << shift; 373f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long pixelSize = getByteCount(); 3748cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferSize < pixelSize) { 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3788cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsToBuffer(mNativeBitmap, dst); 3808cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // now update the buffer's position 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = dst.position(); 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position += pixelSize >> shift; 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dst.position(position); 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3883849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Copy the pixels from the buffer, beginning at the current position, 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * overwriting the bitmap's pixels. The data in the buffer is not changed 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in any way (unlike setPixels(), which converts from unpremultipled 32bit 3913849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * to whatever the bitmap's native format is.</p> 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void copyPixelsFromBuffer(Buffer src) { 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("copyPixelsFromBuffer called on recycled bitmap"); 3958cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int elements = src.remaining(); 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int shift; 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (src instanceof ByteBuffer) { 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 0; 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof ShortBuffer) { 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 1; 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (src instanceof IntBuffer) { 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project shift = 2; 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("unsupported Buffer subclass"); 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4078cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4083849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy long bufferBytes = (long) elements << shift; 409f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson long bitmapBytes = getByteCount(); 4108cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bufferBytes < bitmapBytes) { 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Buffer not large enough for pixels"); 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4148cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeCopyPixelsFromBuffer(mNativeBitmap, src); 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4178cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Tries to make a new bitmap based on the dimensions of this bitmap, 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setting the new bitmap's config to the one specified, and then copying 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this bitmap's pixels into the new bitmap. If the conversion is not 42296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * supported, or the allocator fails, then this returns NULL. The returned 42396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * bitmap initially has the same density as the original. 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The desired config for the resulting bitmap 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isMutable True if the resulting bitmap should be mutable (i.e. 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * its pixels can be modified) 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the new bitmap, or null if the copy could not be made. 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap copy(Config config, boolean isMutable) { 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't copy a recycled bitmap"); 43296e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn Bitmap b = nativeCopy(mNativeBitmap, config.nativeInt, isMutable); 43396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn if (b != null) { 43496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn b.mDensity = mDensity; 43596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn } 43696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn return b; 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43902d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick /** 440f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * Creates a new bitmap, scaled from an existing bitmap, when possible. If the 441f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * specified width and height are the same as the current width and height of 442f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * the source btimap, the source bitmap is returned and now new bitmap is 443f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * created. 44402d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * 44502d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param src The source bitmap. 44602d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstWidth The new bitmap's desired width. 44702d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param dstHeight The new bitmap's desired height. 44802d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick * @param filter true if the source should be filtered. 449f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return The new scaled bitmap or the source bitmap if no scaling is required. 45002d9102b3bdebac6989c2b7d12c080fb7c1f8e2bBrad Fitzpatrick */ 451f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy public static Bitmap createScaledBitmap(Bitmap src, int dstWidth, int dstHeight, 452f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy boolean filter) { 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m; 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // small pool of just 1 matrix 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = sScaleMatrix; 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = null; 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null) { 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = new Matrix(); 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4638cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = src.getWidth(); 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = src.getHeight(); 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sx = dstWidth / (float)width; 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float sy = dstHeight / (float)height; 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.setScale(sx, sy); 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap b = Bitmap.createBitmap(src, 0, 0, width, height, m, filter); 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (Bitmap.class) { 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do we need to check for null? why not just assign everytime? 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sScaleMatrix == null) { 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sScaleMatrix = m; 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4788cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen return b; 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4808cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the source bitmap. The new bitmap may 48396e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * be the same object as source, or a copy may have been made. It is 48496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap src) { 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(src, 0, 0, src.getWidth(), src.getHeight()); 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from the specified subset of the source 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bitmap. The new bitmap may be the same object as source, or a copy may 493f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * have been made. It is initialized with the same density as the original 494f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * bitmap. 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 501f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * @return A copy of a subset of the source bitmap or the source bitmap itself. 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height) { 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(source, x, y, width, height, null, false); 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5068cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an immutable bitmap from subset of the source bitmap, 509f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * transformed by the optional matrix. The new bitmap may be the 510f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same object as source, or a copy may have been made. It is 51196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initialized with the same density as the original bitmap. 512f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * 513f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * If the source bitmap is immutable and the requested subset is the 514f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * same as the source bitmap itself, then the source bitmap is 515f12f6f058f169ead83a546a1c3a51e49452a30b3Romain Guy * returned and no new bitmap is created. 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source The bitmap we are subsetting 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel in source 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel in source 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels in each row 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows 52260b88edea7132ddce90f2dced07c6706f1502270Ken Shirriff * @param m Optional matrix to be applied to the pixels 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param filter true if the source should be filtered. 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Only applies if the matrix contains more than just 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * translation. 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A bitmap that represents the specified subset of source 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the x, y, width, height values are 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * outside of the dimensions of the source bitmap. 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matrix m, boolean filter) { 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > source.getWidth()) { 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x + width must be <= bitmap.width()"); 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > source.getHeight()) { 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y + height must be <= bitmap.height()"); 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // check if we can just return our argument unchanged 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!source.isMutable() && x == 0 && y == 0 && width == source.getWidth() && 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height == source.getHeight() && (m == null || m.isIdentity())) { 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return source; 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5478cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int neww = width; 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newh = height; 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Canvas canvas = new Canvas(); 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bitmap; 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint paint; 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect srcR = new Rect(x, y, x + width, y + height); 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF dstR = new RectF(0, 0, width, height); 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 557feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy Config newConfig = Config.ARGB_8888; 558feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy final Config config = source.getConfig(); 559feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy // GIF files generate null configs, assume ARGB_8888 560feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy if (config != null) { 561feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy switch (config) { 562feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case RGB_565: 563feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.RGB_565; 564feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 565feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ALPHA_8: 566feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ALPHA_8; 567feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 568676b17391fb6583e5df944c36b1bd4c1be835689Romain Guy //noinspection deprecation 569feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_4444: 570feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy case ARGB_8888: 571feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy default: 572feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy newConfig = Config.ARGB_8888; 573feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy break; 574feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 575feeea8f07c854e6b0ae2fec3aa2d239c17f32b5bRomain Guy } 576d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m == null || m.isIdentity()) { 578d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, newConfig, source.hasAlpha()); 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = null; // not needed 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 581d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy final boolean transformed = !m.rectStaysRect(); 582d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RectF deviceR = new RectF(); 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m.mapRect(deviceR, dstR); 585d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project neww = Math.round(deviceR.width()); 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newh = Math.round(deviceR.height()); 588d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 589d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy bitmap = createBitmap(neww, newh, transformed ? Config.ARGB_8888 : newConfig, 590d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy transformed || source.hasAlpha()); 591d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.translate(-deviceR.left, -deviceR.top); 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.concat(m); 594d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint = new Paint(); 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setFilterBitmap(filter); 597d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (transformed) { 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setAntiAlias(true); 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 60196e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The new bitmap was created from a known bitmap source so assume that 60311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // they use the same density 60411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn bitmap.mDensity = source.mDensity; 60596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn 60696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.setBitmap(bitmap); 60796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn canvas.drawBitmap(source, srcR, dstR, paint); 6086311d0a079702b29984c0d31937345be105e1a5eDianne Hackborn canvas.setBitmap(null); 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bitmap; 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6128cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 61496e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * Returns a mutable bitmap with the specified width and height. Its 61596e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int width, int height, Config config) { 623d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy return createBitmap(width, height, config, true); 624d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 625d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 626d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy /** 627d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * Returns a mutable bitmap with the specified width and height. Its 628d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * initial density is as per {@link #getDensity}. 629d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 630d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param width The width of the bitmap 631d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param height The height of the bitmap 632d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param config The bitmap config to create. 633d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @param hasAlpha If the bitmap is ARGB_8888 this flag can be used to mark the 634d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * bitmap as opaque. Doing so will clear the bitmap in black 635d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * instead of transparent. 636d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * 637d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy * @throws IllegalArgumentException if the width or height are <= 0 638d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy */ 639d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy private static Bitmap createBitmap(int width, int height, Config config, boolean hasAlpha) { 640e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 641e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 642e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreate(null, 0, width, width, height, config.nativeInt, true); 644d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy if (config == Config.ARGB_8888 && !hasAlpha) { 6451373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate nativeErase(bm.mNativeBitmap, 0xff000000); 646d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy nativeSetHasAlpha(bm.mNativeBitmap, hasAlpha); 647d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } else { 6481373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate // No need to initialize it to zeroes; it is backed by a VM byte array 6491373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate // which is by definition preinitialized to all zeroes. 6501373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate // 6511373a8eb581fe3c8e9a036e69042015f98a7e346Christopher Tate //nativeErase(bm.mNativeBitmap, 0); 652d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy } 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6558cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 65896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 65996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset Number of values to skip before the first color in the 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * array of colors. 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride Number of colors in the array between rows (must be >= 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * width or <= -width). 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int offset, int stride, 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int width, int height, Config config) { 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkWidthHeight(width, height); 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = colors.length; 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) || lastScanline < 0 || 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (lastScanline + width > length)) { 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 687e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy if (width <= 0 || height <= 0) { 688e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy throw new IllegalArgumentException("width and height must be > 0"); 689e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy } 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeCreate(colors, offset, stride, width, height, 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project config.nativeInt, false); 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a immutable bitmap with the specified width and height, with each 69696e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * pixel value set to the corresponding value in the colors array. Its 69796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * initial density is as per {@link #getDensity}. 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param colors Array of {@link Color} used to initialize the pixels. 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This array must be at least as large as width * height. 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The width of the bitmap 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The height of the bitmap 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param config The bitmap config to create. If the config does not 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * support per-pixel alpha (e.g. RGB_565), then the alpha 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bytes in the colors[] will be ignored (assumed to be FF) 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if the width or height are <= 0, or if 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the color array's length is less than the number of pixels. 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static Bitmap createBitmap(int colors[], int width, int height, Config config) { 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createBitmap(colors, 0, width, width, height, config); 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an optional array of private data, used by the UI system for 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * some bitmaps. Not intended to be called by applications. 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public byte[] getNinePatchChunk() { 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNinePatchChunk; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 722ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @hide 723ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani * @return the layout padding [left, right, top, bottom] 724ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani */ 725ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani public int[] getLayoutBounds() { 726ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani return mLayoutBounds; 727ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani } 728ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani 729ec4a50428d5f26a22df3edaf7e5b08f41d5cb54bAmith Yamasani /** 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Specifies the known formats a bitmap can be compressed into 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum CompressFormat { 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEG (0), 7342305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora PNG (1), 7352305ac9e4a262ed09fd034ae417e9b1dda4c0ccbVikas Arora WEBP (2); 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CompressFormat(int nativeInt) { 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = nativeInt; 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nativeInt; 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Number of bytes of temp storage we use for communicating between the 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * native compressor and the java OutputStream. 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final static int WORKING_COMPRESS_STORAGE = 4096; 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write a compressed version of the bitmap to the specified outputstream. 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If this returns true, the bitmap can be reconstructed by passing a 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * corresponding inputstream to BitmapFactory.decodeStream(). Note: not 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * all Formats support all bitmap configs directly, so it is possible that 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the returned bitmap from BitmapFactory could be in a different bitdepth, 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and/or may have lost per-pixel alpha (e.g. JPEG only supports opaque 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pixels). 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param format The format of the compressed image 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param quality Hint to the compressor, 0-100. 0 meaning compress for 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * small size, 100 meaning compress for max quality. Some 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * formats, like PNG which is lossless, will ignore the 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * quality setting 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stream The outputstream to write the compressed data. 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if successfully compressed to the specified stream. 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean compress(CompressFormat format, int quality, OutputStream stream) { 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't compress a recycled bitmap"); 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do explicit check before calling the native method 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stream == null) { 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new NullPointerException(); 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (quality < 0 || quality > 100) { 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("quality must be 0..100"); 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeCompress(mNativeBitmap, format.nativeInt, quality, 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project stream, new byte[WORKING_COMPRESS_STORAGE]); 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7788cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if the bitmap is marked as mutable (i.e. can be drawn into) 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean isMutable() { 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mIsMutable; 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7863849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy /** 7873849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Indicates whether pixels stored in this bitmaps are stored pre-multiplied. 7883849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * When a pixel is pre-multiplied, the RGB components have been multiplied by 7893849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * the alpha component. For instance, if the original color is a 50% 7903849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * translucent red <code>(128, 255, 0, 0)</code>, the pre-multiplied form is 7913849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <code>(128, 128, 0, 0)</code>.</p> 7923849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 7933849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>This method always returns false if {@link #getConfig()} is 7943849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * {@link Bitmap.Config#ALPHA_8} or {@link Bitmap.Config#RGB_565}.</p> 7953849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 7963849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @return true if the underlying pixels have been pre-multiplied, false 7973849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * otherwise 7983849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy */ 7993849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy public final boolean isPremultiplied() { 8003849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy final Config config = getConfig(); 8013849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy //noinspection deprecation 8023849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy return config == Config.ARGB_8888 || config == Config.ARGB_4444; 8033849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy } 8043849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's width */ 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getWidth() { 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mWidth == -1 ? mWidth = nativeWidth(mNativeBitmap) : mWidth; 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Returns the bitmap's height */ 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getHeight() { 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mHeight == -1 ? mHeight = nativeHeight(mNativeBitmap) : mHeight; 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8148cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 81611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 81711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8192784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledWidth(Canvas canvas) { 82011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, canvas.mDensity); 8212784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 8222784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 8232784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 82411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 82511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link Canvas}. 8262784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 8272784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn public int getScaledHeight(Canvas canvas) { 82811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, canvas.mDensity); 82911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 83011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 83111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 83211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledWidth(int)} with the target 83311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 83411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 83511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(DisplayMetrics metrics) { 83611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, metrics.densityDpi); 83711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 83811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 83911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 84011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * Convenience for calling {@link #getScaledHeight(int)} with the target 84111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * density of the given {@link DisplayMetrics}. 84211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 84311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(DisplayMetrics metrics) { 84411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, metrics.densityDpi); 8452784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 8462784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn 8472784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn /** 8482784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * Convenience method that returns the width of this bitmap divided 8492784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * by the density scale factor. 8502784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * 85111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 8522784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn * @return The scaled width of this bitmap, according to the density scale factor. 8532784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn */ 85411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledWidth(int targetDensity) { 85511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getWidth(), mDensity, targetDensity); 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Convenience method that returns the height of this bitmap divided 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by the density scale factor. 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 86211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @param targetDensity The density of the target canvas of the bitmap. 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The scaled height of this bitmap, according to the density scale factor. 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 86511ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn public int getScaledHeight(int targetDensity) { 86611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return scaleFromDensity(getHeight(), mDensity, targetDensity); 86711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn } 86811ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 86911ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn /** 87011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn * @hide 87111ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn */ 87211ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn static public int scaleFromDensity(int size, int sdensity, int tdensity) { 87311ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn if (sdensity == DENSITY_NONE || sdensity == tdensity) { 87411ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn return size; 8752784ff0af88128f66ae690b73d48fb7e4a211e68Dianne Hackborn } 87611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 87711ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn // Scale by tdensity / sdensity, rounding up. 878366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return ((size * tdensity) + (sdensity >> 1)) / sdensity; 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 88011ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return the number of bytes between rows in the bitmap's pixels. Note that 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this refers to the pixels as stored natively by the bitmap. If you call 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * getPixels() or setPixels(), then the pixels are uniformly treated as 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32bit values, packed according to the Color class. 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return number of bytes between rows of the native bitmap pixels. 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final int getRowBytes() { 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeRowBytes(mNativeBitmap); 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8928cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 894f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson * Returns the number of bytes used to store this bitmap's pixels. 895f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson */ 896f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson public final int getByteCount() { 897f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson // int result permits bitmaps up to 46,340 x 46,340 898f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson return getRowBytes() * getHeight(); 899f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson } 900f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson 901f7f9d9c39df22ad6929f001f07588469f77e8bf5Jesse Wilson /** 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If the bitmap's internal config is in one of the public formats, return 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that config, otherwise return null. 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Config getConfig() { 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Config.nativeToConfig(nativeConfig(mNativeBitmap)); 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 909a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** Returns true if the bitmap's config supports per-pixel alpha, and 910a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * if the pixels may contain non-opaque alpha values. For some configs, 911a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * this is always false (e.g. RGB_565), since they do not support per-pixel 912a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * alpha. However, for configs that do, the bitmap may be flagged to be 913a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * known that all of its pixels are opaque. In this case hasAlpha() will 914a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * also return false. If a config such as ARGB_8888 is not so flagged, 915a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * it will return true by default. 916a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean hasAlpha() { 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeHasAlpha(mNativeBitmap); 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 922a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * Tell the bitmap if all of the pixels are known to be opaque (false) 923a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * or if some of the pixels may contain non-opaque alpha values (true). 924366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * Note, for some configs (e.g. RGB_565) this call is ignored, since it 925366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy * does not support per-pixel alpha values. 926a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * 927a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * This is meant as a drawing hint, as in some cases a bitmap that is known 928a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * to be opaque can take a faster drawing case than one that may have 929a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed * non-opaque per-pixel alpha values. 930a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed */ 931a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed public void setHasAlpha(boolean hasAlpha) { 932a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed nativeSetHasAlpha(mNativeBitmap, hasAlpha); 933a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed } 934a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed 935a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed /** 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the bitmap's pixels with the specified {@link Color}. 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable. 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void eraseColor(int c) { 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't erase a recycled bitmap"); 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException("cannot erase immutable bitmaps"); 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeErase(mNativeBitmap, c); 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the {@link Color} at the specified location. Throws an exception 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if x or y are out of bounds (negative or >= to the width or height 9513849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * respectively). The returned color is a non-premultiplied ARGB value. 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate (0...width-1) of the pixel to return 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate (0...height-1) of the pixel to return 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The argb {@link Color} at the specified coordinate 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y exceed the bitmap's bounds 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getPixel(int x, int y) { 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixel() on a recycled bitmap"); 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return nativeGetPixel(mNativeBitmap, x, y); 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9638cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns in pixels[] a copy of the data in the bitmap. Each value is 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a packed int representing a {@link Color}. The stride parameter allows 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the caller to allow for gaps in the returned pixels array between 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows. For normal packed results, just pass width for the stride value. 9693849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * The returned colors are non-premultiplied ARGB values. 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The array to receive the bitmap's colors 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The first index to write into pixels[] 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of entries in pixels[] to skip between 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rows (must be >= bitmap's width). Can be negative. 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to read from 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to read from 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of pixels to read from each row 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to read 9813849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height exceed the 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds of the bitmap, or if abs(stride) < width. 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void getPixels(int[] pixels, int offset, int stride, 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int x, int y, int width, int height) { 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call getPixels() on a recycled bitmap"); 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeGetPixels(mNativeBitmap, pixels, offset, stride, 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project x, y, width, height); 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9978cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixel() 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixel() 10013849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x x coordinate of the pixel 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y y coordinate of the pixel 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelAccess(int x, int y) { 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x >= getWidth()) { 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("x must be < bitmap.width()"); 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y >= getHeight()) { 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("y must be < bitmap.height()"); 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shared code to check for illegal arguments passed to getPixels() 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or setPixels() 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x left edge of the area of pixels to access 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y top edge of the area of pixels to access 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width width of the area of pixels to access 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height height of the area of pixels to access 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset offset into pixels[] array 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride number of elements in pixels[] between each logical row 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels array to hold the area of pixels being accessed 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkPixelsAccess(int x, int y, int width, int height, 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset, int stride, int pixels[]) { 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkXYSign(x, y); 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width < 0) { 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("width must be >= 0"); 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height < 0) { 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("height must be >= 0"); 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (x + width > getWidth()) { 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "x + width must be <= bitmap.width()"); 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y + height > getHeight()) { 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException( 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "y + height must be <= bitmap.height()"); 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Math.abs(stride) < width) { 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("abs(stride) must be >= width"); 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastScanline = offset + (height - 1) * stride; 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = pixels.length; 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || (offset + width > length) 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || lastScanline < 0 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (lastScanline + width > length)) { 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ArrayIndexOutOfBoundsException(); 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10558cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10573849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Write the specified {@link Color} into the bitmap (assuming it is 10583849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * mutable) at the x,y coordinate. The color must be a 10593849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * non-premultiplied ARGB value.</p> 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the pixel to replace (0...width-1) 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the pixel to replace (0...height-1) 10633849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * @param color The ARGB color to write into the bitmap 10643849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y are outside of the bitmap's 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bounds. 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixel(int x, int y, int color) { 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixel() on a recycled bitmap"); 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelAccess(x, y); 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeSetPixel(mNativeBitmap, x, y, color); 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10778cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10793849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * <p>Replace pixels in the bitmap with the colors in the array. Each element 10803849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * in the array is a packed int prepresenting a non-premultiplied ARGB 10813849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * {@link Color}.</p> 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pixels The colors to write to the bitmap 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offset The index of the first color to read from pixels[] 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stride The number of colors in pixels[] to skip between rows. 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Normally this value will be the same as the width of 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap, but it can be larger (or negative). 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x The x coordinate of the first pixel to write to in 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y coordinate of the first pixel to write to in 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap. 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param width The number of colors to copy from pixels[] per row 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The number of rows to write to the bitmap 10943849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy * 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException if the bitmap is not mutable 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalArgumentException if x, y, width, height are outside of 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bitmap's bounds. 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ArrayIndexOutOfBoundsException if the pixels array is too small 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to receive the specified number of pixels. 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setPixels(int[] pixels, int offset, int stride, 11023849f93b3c2b29ca3873b602897dccac039a0b98Romain Guy int x, int y, int width, int height) { 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't call setPixels() on a recycled bitmap"); 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isMutable()) { 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException(); 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (width == 0 || height == 0) { 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; // nothing to do 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkPixelsAccess(x, y, width, height, offset, stride, pixels); 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nativeSetPixels(mNativeBitmap, pixels, offset, stride, 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project x, y, width, height); 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11148cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final Parcelable.Creator<Bitmap> CREATOR 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new Parcelable.Creator<Bitmap>() { 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Rebuilds a bitmap previously stored with writeToParcel(). 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to read the bitmap from 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return a new bitmap created from the data in the parcel 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap createFromParcel(Parcel p) { 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeCreateFromParcel(p); 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to unparcel Bitmap"); 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap[] newArray(int size) { 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new Bitmap[size]; 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * No special parcel contents. 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int describeContents() { 1139b6377170960d40e66858d8b4d335a95eac773762Bart Sears return 0; 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Write the bitmap and its pixels to the parcel. The bitmap can be 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rebuilt from the parcel by calling CREATOR.createFromParcel(). 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param p Parcel object to write the bitmap data into 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel p, int flags) { 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't parcel a recycled bitmap"); 1149de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn if (!nativeWriteToParcel(mNativeBitmap, mIsMutable, mDensity, p)) { 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("native writeToParcel failed"); 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This may be drawn with Canvas.drawBitmap(), where the color(s) will be 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * taken from the paint that is passed to the draw call. 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the alpha channel of the original bitmap. 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha() { 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return extractAlpha(null, null); 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11648cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns a new bitmap that captures the alpha values of the original. 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * These values may be affected by the optional Paint parameter, which 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can contain its own alpha, and may also contain a MaskFilter which 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * could change the actual dimensions of the resulting bitmap (e.g. 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a blur maskfilter might enlarge the resulting bitmap). If offsetXY 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is not null, it returns the amount to offset the returned bitmap so 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that it will logically align with the original. For example, if the 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint contains a blur of radius 2, then offsetXY[] would contains 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * -2, -2, so that drawing the alpha bitmap offset by (-2, -2) and then 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawing the original would result in the blur visually aligning with 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the original. 117796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 117896e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * <p>The initial density of the returned bitmap is the same as the original's. 117996e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn * 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param paint Optional paint used to modify the alpha values in the 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * resulting bitmap. Pass null for default behavior. 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param offsetXY Optional array that returns the X (index 0) and Y 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (index 1) offset needed to position the returned bitmap 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * so that it visually lines up with the original. 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return new bitmap containing the (optionally modified by paint) alpha 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * channel of the original bitmap. This may be drawn with 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Canvas.drawBitmap(), where the color(s) will be taken from the 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * paint that is passed to the draw call. 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Bitmap extractAlpha(Paint paint, int[] offsetXY) { 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkRecycled("Can't extractAlpha on a recycled bitmap"); 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nativePaint = paint != null ? paint.mNativePaint : 0; 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Bitmap bm = nativeExtractAlpha(mNativeBitmap, nativePaint, offsetXY); 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bm == null) { 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Failed to extractAlpha on Bitmap"); 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 119796e240f25a97c10bba863df328ed73a82c34ff61Dianne Hackborn bm.mDensity = mDensity; 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bm; 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12018cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen /** 120276d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * Given another bitmap, return true if it has the same dimensions, config, 120376d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * and pixel data as this bitmap. If any of those differ, return false. 120476d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed * If other is null, return false. 120576d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed */ 120676d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed public boolean sameAs(Bitmap other) { 1207366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy return this == other || (other != null && nativeSameAs(mNativeBitmap, other.mNativeBitmap)); 120876d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed } 120976d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed 121076d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed /** 12118cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * Rebuilds any caches associated with the bitmap that are used for 12128cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * drawing it. In the case of purgeable bitmaps, this call will attempt to 12138cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * ensure that the pixels have been decoded. 12148cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * If this is called on more than one bitmap in sequence, the priority is 12158cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * given in LRU order (i.e. the last bitmap called will be given highest 12168cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * priority). 12178cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * 12188cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * For bitmaps with no associated caches, this call is effectively a no-op, 12198cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen * and therefore is harmless. 12208cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen */ 12218cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen public void prepareToDraw() { 12228cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen nativePrepareToDraw(mNativeBitmap); 12238cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen } 12248cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 1225e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private static class BitmapFinalizer { 1226e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy private final int mNativeBitmap; 122702890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 1228e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy BitmapFinalizer(int nativeBitmap) { 1229e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy mNativeBitmap = nativeBitmap; 123002890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy } 123102890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy 123202890fd0f98b3b8d98baf0bda1ea906afd723d8bRomain Guy @Override 1233e4ac2d6b5723c95e648c489b187ddde449452c13Patrick Dubroy public void finalize() { 1234366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy try { 1235366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy super.finalize(); 1236366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } catch (Throwable t) { 1237366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy // Ignore 1238366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } finally { 1239366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy nativeDestructor(mNativeBitmap); 1240366a84056c9a695ee6702d9d30bf9f3b521ba7ccRomain Guy } 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12438cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //////////// native methods 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreate(int[] colors, int offset, 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int stride, int width, int height, 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nativeConfig, boolean mutable); 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCopy(int srcBitmap, int nativeConfig, 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable); 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeDestructor(int nativeBitmap); 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeRecycle(int nativeBitmap); 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native boolean nativeCompress(int nativeBitmap, int format, 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int quality, OutputStream stream, 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] tempStorage); 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeErase(int nativeBitmap, int color); 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeWidth(int nativeBitmap); 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeHeight(int nativeBitmap); 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeRowBytes(int nativeBitmap); 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeConfig(int nativeBitmap); 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native boolean nativeHasAlpha(int nativeBitmap); 12638cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeGetPixel(int nativeBitmap, int x, int y); 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeGetPixels(int nativeBitmap, int[] pixels, 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset, int stride, int x, 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int y, int width, int height); 12688cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeSetPixel(int nativeBitmap, int x, int y, 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int color); 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeSetPixels(int nativeBitmap, int[] colors, 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset, int stride, int x, 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int y, int width, int height); 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeCopyPixelsToBuffer(int nativeBitmap, 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Buffer dst); 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native void nativeCopyPixelsFromBuffer(int nb, Buffer src); 12770bbae0836426ba2704e38e7f90a9d0ca502ab71dRomain Guy private static native int nativeGenerationId(int nativeBitmap); 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeCreateFromParcel(Parcel p); 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns true on success 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native boolean nativeWriteToParcel(int nativeBitmap, 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isMutable, 1283de0dfb7b65a02d4dd74c271b558adee0973fc267Dianne Hackborn int density, 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Parcel p); 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // returns a new bitmap built from the native bitmap's alpha, and the paint 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native Bitmap nativeExtractAlpha(int nativeBitmap, 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nativePaint, 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] offsetXY); 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12908cdcb12752b716d0407733fecefcf1d9e926310aWei-Ta Chen private static native void nativePrepareToDraw(int nativeBitmap); 1291a78b0a2d9ebb38b86ed802b3d86de07d0b301262Mike Reed private static native void nativeSetHasAlpha(int nBitmap, boolean hasAlpha); 129276d1e01d5e65c4631c827831e98ad4e300d99eabMike Reed private static native boolean nativeSameAs(int nb0, int nb1); 1293d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* package */ final int ni() { 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNativeBitmap; 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1298