| /* |
| * Copyright (C) 2011 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.layoutlib.bridge.Bridge; |
| import com.android.layoutlib.bridge.android.BridgeResources.NinePatchInputStream; |
| import com.android.layoutlib.bridge.impl.DelegateManager; |
| import com.android.ninepatch.NinePatchChunk; |
| import com.android.resources.Density; |
| |
| import android.graphics.BitmapFactory.Options; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * Delegate implementing the native methods of android.graphics.BitmapFactory |
| * |
| * Through the layoutlib_create tool, the original native methods of BitmapFactory have been |
| * replaced by calls to methods of the same name in this delegate class. |
| * |
| * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager} |
| * around to map int to instance of the delegate. |
| * |
| */ |
| /*package*/ class BitmapFactory_Delegate { |
| |
| // ------ Java delegates ------ |
| |
| /*package*/ static Bitmap finishDecode(Bitmap bm, Rect outPadding, Options opts) { |
| if (bm == null || opts == null) { |
| return bm; |
| } |
| |
| final int density = opts.inDensity; |
| if (density == 0) { |
| return bm; |
| } |
| |
| bm.setDensity(density); |
| final int targetDensity = opts.inTargetDensity; |
| if (targetDensity == 0 || density == targetDensity || density == opts.inScreenDensity) { |
| return bm; |
| } |
| |
| byte[] np = bm.getNinePatchChunk(); |
| final boolean isNinePatch = np != null && NinePatch.isNinePatchChunk(np); |
| // DELEGATE CHANGE: never scale 9-patch |
| if (opts.inScaled && isNinePatch == false) { |
| float scale = targetDensity / (float)density; |
| // TODO: This is very inefficient and should be done in native by Skia |
| final Bitmap oldBitmap = bm; |
| bm = Bitmap.createScaledBitmap(oldBitmap, (int) (bm.getWidth() * scale + 0.5f), |
| (int) (bm.getHeight() * scale + 0.5f), true); |
| oldBitmap.recycle(); |
| |
| if (isNinePatch) { |
| np = nativeScaleNinePatch(np, scale, outPadding); |
| bm.setNinePatchChunk(np); |
| } |
| bm.setDensity(targetDensity); |
| } |
| |
| return bm; |
| } |
| |
| |
| // ------ Native Delegates ------ |
| |
| /*package*/ static void nativeSetDefaultConfig(int nativeConfig) { |
| // pass |
| } |
| |
| /*package*/ static Bitmap nativeDecodeStream(InputStream is, byte[] storage, |
| Rect padding, Options opts) { |
| Bitmap bm = null; |
| |
| Density density = Density.MEDIUM; |
| if (opts != null) { |
| density = Density.getEnum(opts.inDensity); |
| } |
| |
| try { |
| if (is instanceof NinePatchInputStream) { |
| NinePatchInputStream npis = (NinePatchInputStream) is; |
| npis.disableFakeMarkSupport(); |
| |
| // load the bitmap as a nine patch |
| com.android.ninepatch.NinePatch ninePatch = com.android.ninepatch.NinePatch.load( |
| npis, true /*is9Patch*/, false /*convert*/); |
| |
| // get the bitmap and chunk objects. |
| bm = Bitmap_Delegate.createBitmap(ninePatch.getImage(), true /*isMutable*/, |
| density); |
| NinePatchChunk chunk = ninePatch.getChunk(); |
| |
| // put the chunk in the bitmap |
| bm.setNinePatchChunk(NinePatch_Delegate.serialize(chunk)); |
| |
| // read the padding |
| int[] paddingarray = chunk.getPadding(); |
| padding.left = paddingarray[0]; |
| padding.top = paddingarray[1]; |
| padding.right = paddingarray[2]; |
| padding.bottom = paddingarray[3]; |
| } else { |
| // load the bitmap directly. |
| bm = Bitmap_Delegate.createBitmap(is, true, density); |
| } |
| } catch (IOException e) { |
| Bridge.getLog().error(null,"Failed to load image" , e, null); |
| } |
| |
| return bm; |
| } |
| |
| /*package*/ static Bitmap nativeDecodeFileDescriptor(FileDescriptor fd, |
| Rect padding, Options opts) { |
| opts.inBitmap = null; |
| return null; |
| } |
| |
| /*package*/ static Bitmap nativeDecodeAsset(int asset, Rect padding, Options opts) { |
| opts.inBitmap = null; |
| return null; |
| } |
| |
| /*package*/ static Bitmap nativeDecodeByteArray(byte[] data, int offset, |
| int length, Options opts) { |
| opts.inBitmap = null; |
| return null; |
| } |
| |
| /*package*/ static byte[] nativeScaleNinePatch(byte[] chunk, float scale, Rect pad) { |
| // don't scale for now. This should not be called anyway since we re-implement |
| // BitmapFactory.finishDecode(); |
| return chunk; |
| } |
| |
| /*package*/ static boolean nativeIsSeekable(FileDescriptor fd) { |
| return true; |
| } |
| } |