/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.graphics; import com.android.ide.common.rendering.api.LayoutLog; import com.android.layoutlib.bridge.Bridge; import com.android.layoutlib.bridge.impl.DelegateManager; import com.android.resources.Density; import com.android.tools.layoutlib.annotations.LayoutlibDelegate; import android.graphics.Bitmap.Config; import android.os.Parcel; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.nio.Buffer; import java.util.Arrays; import java.util.EnumSet; import java.util.Set; import javax.imageio.ImageIO; /** * Delegate implementing the native methods of android.graphics.Bitmap * * Through the layoutlib_create tool, the original native methods of Bitmap have been replaced * by calls to methods of the same name in this delegate class. * * This class behaves like the original native implementation, but in Java, keeping previously * native data into its own objects and mapping them to int that are sent back and forth between * it and the original Bitmap class. * * @see DelegateManager * */ public final class Bitmap_Delegate { public enum BitmapCreateFlags { PREMULTIPLIED, MUTABLE } // ---- delegate manager ---- private static final DelegateManager sManager = new DelegateManager(Bitmap_Delegate.class); // ---- delegate helper data ---- // ---- delegate data ---- private final Config mConfig; private BufferedImage mImage; private boolean mHasAlpha = true; private boolean mHasMipMap = false; // TODO: check the default. private int mGenerationId = 0; // ---- Public Helper methods ---- /** * Returns the native delegate associated to a given {@link Bitmap_Delegate} object. */ public static Bitmap_Delegate getDelegate(Bitmap bitmap) { return sManager.getDelegate(bitmap.mNativeBitmap); } /** * Returns the native delegate associated to a given an int referencing a {@link Bitmap} object. */ public static Bitmap_Delegate getDelegate(long native_bitmap) { return sManager.getDelegate(native_bitmap); } /** * Creates and returns a {@link Bitmap} initialized with the given file content. * * @param input the file from which to read the bitmap content * @param isMutable whether the bitmap is mutable * @param density the density associated with the bitmap * * @see Bitmap#isMutable() * @see Bitmap#getDensity() */ public static Bitmap createBitmap(File input, boolean isMutable, Density density) throws IOException { return createBitmap(input, getPremultipliedBitmapCreateFlags(isMutable), density); } /** * Creates and returns a {@link Bitmap} initialized with the given file content. * * @param input the file from which to read the bitmap content * @param density the density associated with the bitmap * * @see Bitmap#isPremultiplied() * @see Bitmap#isMutable() * @see Bitmap#getDensity() */ public static Bitmap createBitmap(File input, Set createFlags, Density density) throws IOException { // create a delegate with the content of the file. Bitmap_Delegate delegate = new Bitmap_Delegate(ImageIO.read(input), Config.ARGB_8888); return createBitmap(delegate, createFlags, density.getDpiValue()); } /** * Creates and returns a {@link Bitmap} initialized with the given stream content. * * @param input the stream from which to read the bitmap content * @param isMutable whether the bitmap is mutable * @param density the density associated with the bitmap * * @see Bitmap#isMutable() * @see Bitmap#getDensity() */ public static Bitmap createBitmap(InputStream input, boolean isMutable, Density density) throws IOException { return createBitmap(input, getPremultipliedBitmapCreateFlags(isMutable), density); } /** * Creates and returns a {@link Bitmap} initialized with the given stream content. * * @param input the stream from which to read the bitmap content * @param createFlags * @param density the density associated with the bitmap * * @see Bitmap#isPremultiplied() * @see Bitmap#isMutable() * @see Bitmap#getDensity() */ public static Bitmap createBitmap(InputStream input, Set createFlags, Density density) throws IOException { // create a delegate with the content of the stream. Bitmap_Delegate delegate = new Bitmap_Delegate(ImageIO.read(input), Config.ARGB_8888); return createBitmap(delegate, createFlags, density.getDpiValue()); } /** * Creates and returns a {@link Bitmap} initialized with the given {@link BufferedImage} * * @param image the bitmap content * @param isMutable whether the bitmap is mutable * @param density the density associated with the bitmap * * @see Bitmap#isMutable() * @see Bitmap#getDensity() */ public static Bitmap createBitmap(BufferedImage image, boolean isMutable, Density density) throws IOException { return createBitmap(image, getPremultipliedBitmapCreateFlags(isMutable), density); } /** * Creates and returns a {@link Bitmap} initialized with the given {@link BufferedImage} * * @param image the bitmap content * @param createFlags * @param density the density associated with the bitmap * * @see Bitmap#isPremultiplied() * @see Bitmap#isMutable() * @see Bitmap#getDensity() */ public static Bitmap createBitmap(BufferedImage image, Set createFlags, Density density) throws IOException { // create a delegate with the given image. Bitmap_Delegate delegate = new Bitmap_Delegate(image, Config.ARGB_8888); return createBitmap(delegate, createFlags, density.getDpiValue()); } /** * Returns the {@link BufferedImage} used by the delegate of the given {@link Bitmap}. */ public static BufferedImage getImage(Bitmap bitmap) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(bitmap.mNativeBitmap); if (delegate == null) { return null; } return delegate.mImage; } public static int getBufferedImageType(int nativeBitmapConfig) { switch (Config.nativeToConfig(nativeBitmapConfig)) { case ALPHA_8: return BufferedImage.TYPE_INT_ARGB; case RGB_565: return BufferedImage.TYPE_INT_ARGB; case ARGB_4444: return BufferedImage.TYPE_INT_ARGB; case ARGB_8888: return BufferedImage.TYPE_INT_ARGB; } return BufferedImage.TYPE_INT_ARGB; } /** * Returns the {@link BufferedImage} used by the delegate of the given {@link Bitmap}. */ public BufferedImage getImage() { return mImage; } /** * Returns the Android bitmap config. Note that this not the config of the underlying * Java2D bitmap. */ public Config getConfig() { return mConfig; } /** * Returns the hasAlpha rendering hint * @return true if the bitmap alpha should be used at render time */ public boolean hasAlpha() { return mHasAlpha && mConfig != Config.RGB_565; } public boolean hasMipMap() { // TODO: check if more checks are required as in hasAlpha. return mHasMipMap; } /** * Update the generationId. * * @see Bitmap#getGenerationId() */ public void change() { mGenerationId++; } // ---- native methods ---- @LayoutlibDelegate /*package*/ static Bitmap nativeCreate(int[] colors, int offset, int stride, int width, int height, int nativeConfig, boolean isMutable) { int imageType = getBufferedImageType(nativeConfig); // create the image BufferedImage image = new BufferedImage(width, height, imageType); if (colors != null) { image.setRGB(0, 0, width, height, colors, offset, stride); } // create a delegate with the content of the stream. Bitmap_Delegate delegate = new Bitmap_Delegate(image, Config.nativeToConfig(nativeConfig)); return createBitmap(delegate, getPremultipliedBitmapCreateFlags(isMutable), Bitmap.getDefaultDensity()); } @LayoutlibDelegate /*package*/ static Bitmap nativeCopy(long srcBitmap, int nativeConfig, boolean isMutable) { Bitmap_Delegate srcBmpDelegate = sManager.getDelegate(srcBitmap); if (srcBmpDelegate == null) { return null; } BufferedImage srcImage = srcBmpDelegate.getImage(); int width = srcImage.getWidth(); int height = srcImage.getHeight(); int imageType = getBufferedImageType(nativeConfig); // create the image BufferedImage image = new BufferedImage(width, height, imageType); // copy the source image into the image. int[] argb = new int[width * height]; srcImage.getRGB(0, 0, width, height, argb, 0, width); image.setRGB(0, 0, width, height, argb, 0, width); // create a delegate with the content of the stream. Bitmap_Delegate delegate = new Bitmap_Delegate(image, Config.nativeToConfig(nativeConfig)); return createBitmap(delegate, getPremultipliedBitmapCreateFlags(isMutable), Bitmap.getDefaultDensity()); } @LayoutlibDelegate /*package*/ static void nativeDestructor(long nativeBitmap) { sManager.removeJavaReferenceFor(nativeBitmap); } @LayoutlibDelegate /*package*/ static boolean nativeRecycle(long nativeBitmap) { sManager.removeJavaReferenceFor(nativeBitmap); return true; } @LayoutlibDelegate /*package*/ static void nativeReconfigure(long nativeBitmap, int width, int height, int config, int allocSize) { Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED, "Bitmap.reconfigure() is not supported", null /*data*/); } @LayoutlibDelegate /*package*/ static boolean nativeCompress(long nativeBitmap, int format, int quality, OutputStream stream, byte[] tempStorage) { Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED, "Bitmap.compress() is not supported", null /*data*/); return true; } @LayoutlibDelegate /*package*/ static void nativeErase(long nativeBitmap, int color) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return; } BufferedImage image = delegate.mImage; Graphics2D g = image.createGraphics(); try { g.setColor(new java.awt.Color(color, true)); g.fillRect(0, 0, image.getWidth(), image.getHeight()); } finally { g.dispose(); } } @LayoutlibDelegate /*package*/ static int nativeRowBytes(long nativeBitmap) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return 0; } return delegate.mImage.getWidth(); } @LayoutlibDelegate /*package*/ static int nativeConfig(long nativeBitmap) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return 0; } return delegate.mConfig.nativeInt; } @LayoutlibDelegate /*package*/ static boolean nativeHasAlpha(long nativeBitmap) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return true; } return delegate.mHasAlpha; } @LayoutlibDelegate /*package*/ static boolean nativeHasMipMap(long nativeBitmap) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return true; } return delegate.mHasMipMap; } @LayoutlibDelegate /*package*/ static int nativeGetPixel(long nativeBitmap, int x, int y, boolean isPremultiplied) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return 0; } // TODO: Support isPremultiplied. return delegate.mImage.getRGB(x, y); } @LayoutlibDelegate /*package*/ static void nativeGetPixels(long nativeBitmap, int[] pixels, int offset, int stride, int x, int y, int width, int height, boolean isPremultiplied) { Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return; } delegate.getImage().getRGB(x, y, width, height, pixels, offset, stride); } @LayoutlibDelegate /*package*/ static void nativeSetPixel(long nativeBitmap, int x, int y, int color, boolean isPremultiplied) { Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return; } delegate.getImage().setRGB(x, y, color); } @LayoutlibDelegate /*package*/ static void nativeSetPixels(long nativeBitmap, int[] colors, int offset, int stride, int x, int y, int width, int height, boolean isPremultiplied) { Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return; } delegate.getImage().setRGB(x, y, width, height, colors, offset, stride); } @LayoutlibDelegate /*package*/ static void nativeCopyPixelsToBuffer(long nativeBitmap, Buffer dst) { // FIXME implement native delegate Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, "Bitmap.copyPixelsToBuffer is not supported.", null, null /*data*/); } @LayoutlibDelegate /*package*/ static void nativeCopyPixelsFromBuffer(long nb, Buffer src) { // FIXME implement native delegate Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, "Bitmap.copyPixelsFromBuffer is not supported.", null, null /*data*/); } @LayoutlibDelegate /*package*/ static int nativeGenerationId(long nativeBitmap) { Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return 0; } return delegate.mGenerationId; } @LayoutlibDelegate /*package*/ static Bitmap nativeCreateFromParcel(Parcel p) { // This is only called by Bitmap.CREATOR (Parcelable.Creator), which is only // used during aidl call so really this should not be called. Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED, "AIDL is not suppored, and therefore Bitmaps cannot be created from parcels.", null /*data*/); return null; } @LayoutlibDelegate /*package*/ static boolean nativeWriteToParcel(long nativeBitmap, boolean isMutable, int density, Parcel p) { // This is only called when sending a bitmap through aidl, so really this should not // be called. Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED, "AIDL is not suppored, and therefore Bitmaps cannot be written to parcels.", null /*data*/); return false; } @LayoutlibDelegate /*package*/ static Bitmap nativeExtractAlpha(long nativeBitmap, long nativePaint, int[] offsetXY) { Bitmap_Delegate bitmap = sManager.getDelegate(nativeBitmap); if (bitmap == null) { return null; } // get the paint which can be null if nativePaint is 0. Paint_Delegate paint = Paint_Delegate.getDelegate(nativePaint); if (paint != null && paint.getMaskFilter() != null) { Bridge.getLog().fidelityWarning(LayoutLog.TAG_MASKFILTER, "MaskFilter not supported in Bitmap.extractAlpha", null, null /*data*/); } int alpha = paint != null ? paint.getAlpha() : 0xFF; BufferedImage image = createCopy(bitmap.getImage(), BufferedImage.TYPE_INT_ARGB, alpha); // create the delegate. The actual Bitmap config is only an alpha channel Bitmap_Delegate delegate = new Bitmap_Delegate(image, Config.ALPHA_8); // the density doesn't matter, it's set by the Java method. return createBitmap(delegate, EnumSet.of(BitmapCreateFlags.MUTABLE), Density.DEFAULT_DENSITY /*density*/); } @LayoutlibDelegate /*package*/ static void nativePrepareToDraw(long nativeBitmap) { // nothing to be done here. } @LayoutlibDelegate /*package*/ static void nativeSetAlphaAndPremultiplied(long nativeBitmap, boolean hasAlpha, boolean isPremul) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return; } delegate.mHasAlpha = hasAlpha; } @LayoutlibDelegate /*package*/ static void nativeSetHasMipMap(long nativeBitmap, boolean hasMipMap) { // get the delegate from the native int. Bitmap_Delegate delegate = sManager.getDelegate(nativeBitmap); if (delegate == null) { return; } delegate.mHasMipMap = hasMipMap; } @LayoutlibDelegate /*package*/ static boolean nativeSameAs(long nb0, long nb1) { Bitmap_Delegate delegate1 = sManager.getDelegate(nb0); if (delegate1 == null) { return false; } Bitmap_Delegate delegate2 = sManager.getDelegate(nb1); if (delegate2 == null) { return false; } BufferedImage image1 = delegate1.getImage(); BufferedImage image2 = delegate2.getImage(); if (delegate1.mConfig != delegate2.mConfig || image1.getWidth() != image2.getWidth() || image1.getHeight() != image2.getHeight()) { return false; } // get the internal data int w = image1.getWidth(); int h = image2.getHeight(); int[] argb1 = new int[w*h]; int[] argb2 = new int[w*h]; image1.getRGB(0, 0, w, h, argb1, 0, w); image2.getRGB(0, 0, w, h, argb2, 0, w); // compares if (delegate1.mConfig == Config.ALPHA_8) { // in this case we have to manually compare the alpha channel as the rest is garbage. final int length = w*h; for (int i = 0 ; i < length ; i++) { if ((argb1[i] & 0xFF000000) != (argb2[i] & 0xFF000000)) { return false; } } return true; } return Arrays.equals(argb1, argb2); } // ---- Private delegate/helper methods ---- private Bitmap_Delegate(BufferedImage image, Config config) { mImage = image; mConfig = config; } private static Bitmap createBitmap(Bitmap_Delegate delegate, Set createFlags, int density) { // get its native_int long nativeInt = sManager.addNewDelegate(delegate); int width = delegate.mImage.getWidth(); int height = delegate.mImage.getHeight(); boolean isMutable = createFlags.contains(BitmapCreateFlags.MUTABLE); boolean isPremultiplied = createFlags.contains(BitmapCreateFlags.PREMULTIPLIED); // and create/return a new Bitmap with it return new Bitmap(nativeInt, null /* buffer */, width, height, density, isMutable, isPremultiplied, null /*ninePatchChunk*/, null /* layoutBounds */); } private static Set getPremultipliedBitmapCreateFlags(boolean isMutable) { Set createFlags = EnumSet.of(BitmapCreateFlags.PREMULTIPLIED); if (isMutable) { createFlags.add(BitmapCreateFlags.MUTABLE); } return createFlags; } /** * Creates and returns a copy of a given BufferedImage. *

* if alpha is different than 255, then it is applied to the alpha channel of each pixel. * * @param image the image to copy * @param imageType the type of the new image * @param alpha an optional alpha modifier * @return a new BufferedImage */ /*package*/ static BufferedImage createCopy(BufferedImage image, int imageType, int alpha) { int w = image.getWidth(); int h = image.getHeight(); BufferedImage result = new BufferedImage(w, h, imageType); int[] argb = new int[w * h]; image.getRGB(0, 0, image.getWidth(), image.getHeight(), argb, 0, image.getWidth()); if (alpha != 255) { final int length = argb.length; for (int i = 0 ; i < length; i++) { int a = (argb[i] >>> 24 * alpha) / 255; argb[i] = (a << 24) | (argb[i] & 0x00FFFFFF); } } result.setRGB(0, 0, w, h, argb, 0, w); return result; } }