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/*
* 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 android.content.res.BridgeResources.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;
}
}
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