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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.view;
import android.graphics.Bitmap;
import android.graphics.Paint;
/**
* An OpenGL ES 2.0 implementation of {@link HardwareLayer}.
*/
abstract class GLES20Layer extends HardwareLayer {
int mLayer;
Finalizer mFinalizer;
GLES20Layer() {
}
GLES20Layer(int width, int height, boolean opaque) {
super(width, height, opaque);
}
/**
* Returns the native layer object used to render this layer.
*
* @return A pointer to the native layer object, or 0 if the object is NULL
*/
public int getLayer() {
return mLayer;
}
@Override
void setLayerPaint(Paint paint) {
if (paint != null) {
GLES20Canvas.nSetLayerPaint(mLayer, paint.mNativePaint);
GLES20Canvas.nSetLayerColorFilter(mLayer, paint.getColorFilter() != null ?
paint.getColorFilter().nativeColorFilter : 0);
}
}
@Override
public boolean copyInto(Bitmap bitmap) {
return GLES20Canvas.nCopyLayer(mLayer, bitmap.mNativeBitmap);
}
@Override
public void destroy() {
if (mDisplayList != null) {
mDisplayList.reset();
}
if (mFinalizer != null) {
mFinalizer.destroy();
mFinalizer = null;
}
mLayer = 0;
}
@Override
void clearStorage() {
if (mLayer != 0) GLES20Canvas.nClearLayerTexture(mLayer);
}
static class Finalizer {
private int mLayerId;
public Finalizer(int layerId) {
mLayerId = layerId;
}
@Override
protected void finalize() throws Throwable {
try {
if (mLayerId != 0) {
GLES20Canvas.nDestroyLayerDeferred(mLayerId);
}
} finally {
super.finalize();
}
}
void destroy() {
GLES20Canvas.nDestroyLayer(mLayerId);
mLayerId = 0;
}
}
}
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