| /* |
| * 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.impl.DelegateManager; |
| import com.android.ninepatch.NinePatchChunk; |
| import com.android.resources.Density; |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| import android.annotation.Nullable; |
| import com.android.layoutlib.bridge.util.NinePatchInputStream; |
| import android.graphics.BitmapFactory.Options; |
| import android.graphics.Bitmap_Delegate.BitmapCreateFlags; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.EnumSet; |
| import java.util.Set; |
| |
| /** |
| * 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 { |
| |
| // ------ Native Delegates ------ |
| |
| @LayoutlibDelegate |
| /*package*/ static Bitmap nativeDecodeStream(InputStream is, byte[] storage, |
| @Nullable Rect padding, @Nullable Options opts) { |
| Bitmap bm = null; |
| |
| Density density = Density.MEDIUM; |
| Set<BitmapCreateFlags> bitmapCreateFlags = EnumSet.of(BitmapCreateFlags.MUTABLE); |
| if (opts != null) { |
| density = Density.getEnum(opts.inDensity); |
| if (opts.inPremultiplied) { |
| bitmapCreateFlags.add(BitmapCreateFlags.PREMULTIPLIED); |
| } |
| opts.inScaled = false; |
| } |
| |
| 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(), bitmapCreateFlags, |
| density); |
| NinePatchChunk chunk = ninePatch.getChunk(); |
| |
| // put the chunk in the bitmap |
| bm.setNinePatchChunk(NinePatch_Delegate.serialize(chunk)); |
| |
| if (padding != null) { |
| // 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, bitmapCreateFlags, density); |
| } |
| } catch (IOException e) { |
| Bridge.getLog().error(null, "Failed to load image", e, null); |
| } |
| |
| return bm; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static Bitmap nativeDecodeFileDescriptor(FileDescriptor fd, |
| Rect padding, Options opts) { |
| opts.inBitmap = null; |
| return null; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static Bitmap nativeDecodeAsset(long asset, Rect padding, Options opts) { |
| opts.inBitmap = null; |
| return null; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static Bitmap nativeDecodeByteArray(byte[] data, int offset, |
| int length, Options opts) { |
| opts.inBitmap = null; |
| return null; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static boolean nativeIsSeekable(FileDescriptor fd) { |
| return true; |
| } |
| |
| /** |
| * Set the newly decoded bitmap's density based on the Options. |
| * |
| * Copied from {@link BitmapFactory#setDensityFromOptions(Bitmap, Options)}. |
| */ |
| @LayoutlibDelegate |
| /*package*/ static void setDensityFromOptions(Bitmap outputBitmap, Options opts) { |
| if (outputBitmap == null || opts == null) return; |
| |
| final int density = opts.inDensity; |
| if (density != 0) { |
| outputBitmap.setDensity(density); |
| final int targetDensity = opts.inTargetDensity; |
| if (targetDensity == 0 || density == targetDensity || density == opts.inScreenDensity) { |
| return; |
| } |
| |
| // --- Change from original implementation begins --- |
| // LayoutLib doesn't scale the nine patch when decoding it. Hence, don't change the |
| // density of the source bitmap in case of ninepatch. |
| |
| if (opts.inScaled) { |
| // --- Change from original implementation ends. --- |
| outputBitmap.setDensity(targetDensity); |
| } |
| } else if (opts.inBitmap != null) { |
| // bitmap was reused, ensure density is reset |
| outputBitmap.setDensity(Bitmap.getDefaultDensity()); |
| } |
| } |
| } |