1f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin/* 2f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Copyright (C) 2010 The Android Open Source Project 3f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * 4f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Licensed under the Apache License, Version 2.0 (the "License"); 5f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * you may not use this file except in compliance with the License. 6f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * You may obtain a copy of the License at 7f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * 8f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * http://www.apache.org/licenses/LICENSE-2.0 9f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * 10f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Unless required by applicable law or agreed to in writing, software 11f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * distributed under the License is distributed on an "AS IS" BASIS, 12f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * See the License for the specific language governing permissions and 14f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * limitations under the License. 15f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin */ 16f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 17a4eae1abb4f2547dfbda84301ee764ce35464881John Reckpackage com.android.gallery3d.glrenderer; 18f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 19f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linimport android.graphics.Bitmap; 20f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linimport android.graphics.Bitmap.Config; 212b3ee0ea07246b859a5b75d8a6102a7cce7ec838Owen Linimport android.graphics.Canvas; 22f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 23f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin// CanvasTexture is a texture whose content is the drawing on a Canvas. 24f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin// The subclasses should override onDraw() to draw on the bitmap. 25f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin// By default CanvasTexture is not opaque. 26f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linabstract class CanvasTexture extends UploadedTexture { 27f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin protected Canvas mCanvas; 28f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private final Config mConfig; 29f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 30f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public CanvasTexture(int width, int height) { 31f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mConfig = Config.ARGB_8888; 32f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin setSize(width, height); 33f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin setOpaque(false); 34f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 35f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 36f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 37f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin protected Bitmap onGetBitmap() { 38f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin Bitmap bitmap = Bitmap.createBitmap(mWidth, mHeight, mConfig); 39f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mCanvas = new Canvas(bitmap); 40f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin onDraw(mCanvas, bitmap); 41f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return bitmap; 42f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 43f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 44f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 45f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin protected void onFreeBitmap(Bitmap bitmap) { 46f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin if (!inFinalizer()) { 47f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin bitmap.recycle(); 48f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 49f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 50f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 51f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin abstract protected void onDraw(Canvas canvas, Bitmap backing); 52f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin} 53