1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 package android.view; 19 20 import android.graphics.Bitmap; 21 import android.graphics.Paint; 22 23 /** 24 * An OpenGL ES 2.0 implementation of {@link HardwareLayer}. 25 */ 26 abstract class GLES20Layer extends HardwareLayer { 27 int mLayer; 28 Finalizer mFinalizer; 29 GLES20Layer()30 GLES20Layer() { 31 } 32 GLES20Layer(int width, int height, boolean opaque)33 GLES20Layer(int width, int height, boolean opaque) { 34 super(width, height, opaque); 35 } 36 37 /** 38 * Returns the native layer object used to render this layer. 39 * 40 * @return A pointer to the native layer object, or 0 if the object is NULL 41 */ getLayer()42 public int getLayer() { 43 return mLayer; 44 } 45 46 @Override setLayerPaint(Paint paint)47 void setLayerPaint(Paint paint) { 48 if (paint != null) { 49 GLES20Canvas.nSetLayerPaint(mLayer, paint.mNativePaint); 50 GLES20Canvas.nSetLayerColorFilter(mLayer, paint.getColorFilter() != null ? 51 paint.getColorFilter().nativeColorFilter : 0); 52 } 53 } 54 55 @Override copyInto(Bitmap bitmap)56 boolean copyInto(Bitmap bitmap) { 57 return GLES20Canvas.nCopyLayer(mLayer, bitmap.mNativeBitmap); 58 } 59 60 @Override destroy()61 void destroy() { 62 if (mFinalizer != null) { 63 mFinalizer.destroy(); 64 mFinalizer = null; 65 } 66 mLayer = 0; 67 } 68 69 @Override clearStorage()70 void clearStorage() { 71 if (mLayer != 0) GLES20Canvas.nClearLayerTexture(mLayer); 72 } 73 74 static class Finalizer { 75 private int mLayerId; 76 Finalizer(int layerId)77 public Finalizer(int layerId) { 78 mLayerId = layerId; 79 } 80 81 @Override finalize()82 protected void finalize() throws Throwable { 83 try { 84 if (mLayerId != 0) { 85 GLES20Canvas.nDestroyLayerDeferred(mLayerId); 86 } 87 } finally { 88 super.finalize(); 89 } 90 } 91 destroy()92 void destroy() { 93 GLES20Canvas.nDestroyLayer(mLayerId); 94 mLayerId = 0; 95 } 96 } 97 } 98