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/*
* Copyright (C) 2010 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.BitmapShader;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import java.util.ArrayList;
/**
* An implementation of a GL canvas that records drawing operations.
* This is intended for use with a DisplayList. This class keeps a list of all the Paint and
* Bitmap objects that it draws, preventing the backing memory of Bitmaps from being freed while
* the DisplayList is still holding a native reference to the memory.
*/
class GLES20RecordingCanvas extends GLES20Canvas {
// These lists ensure that any Bitmaps recorded by a DisplayList are kept alive as long
// as the DisplayList is alive.
@SuppressWarnings({"MismatchedQueryAndUpdateOfCollection"})
private final ArrayList<Bitmap> mBitmaps = new ArrayList<Bitmap>(5);
GLES20RecordingCanvas(boolean translucent) {
super(true, translucent);
}
private void recordShaderBitmap(Paint paint) {
if (paint != null) {
final Shader shader = paint.getShader();
if (shader instanceof BitmapShader) {
mBitmaps.add(((BitmapShader) shader).mBitmap);
}
}
}
void reset() {
mBitmaps.clear();
setupRenderer(true);
}
@Override
public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) {
super.drawPatch(bitmap, chunks, dst, paint);
mBitmaps.add(bitmap);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) {
super.drawBitmap(bitmap, left, top, paint);
mBitmaps.add(bitmap);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) {
super.drawBitmap(bitmap, matrix, paint);
mBitmaps.add(bitmap);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) {
super.drawBitmap(bitmap, src, dst, paint);
mBitmaps.add(bitmap);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) {
super.drawBitmap(bitmap, src, dst, paint);
mBitmaps.add(bitmap);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmap(int[] colors, int offset, int stride, float x, float y, int width,
int height, boolean hasAlpha, Paint paint) {
super.drawBitmap(colors, offset, stride, x, y, width, height, hasAlpha, paint);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmap(int[] colors, int offset, int stride, int x, int y, int width,
int height, boolean hasAlpha, Paint paint) {
super.drawBitmap(colors, offset, stride, x, y, width, height, hasAlpha, paint);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts,
int vertOffset, int[] colors, int colorOffset, Paint paint) {
super.drawBitmapMesh(bitmap, meshWidth, meshHeight, verts, vertOffset, colors, colorOffset,
paint);
mBitmaps.add(bitmap);
// Shaders in the Paint are ignored when drawing a Bitmap
}
@Override
public void drawCircle(float cx, float cy, float radius, Paint paint) {
super.drawCircle(cx, cy, radius, paint);
recordShaderBitmap(paint);
}
@Override
public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) {
super.drawLine(startX, startY, stopX, stopY, paint);
recordShaderBitmap(paint);
}
@Override
public void drawLines(float[] pts, int offset, int count, Paint paint) {
super.drawLines(pts, offset, count, paint);
recordShaderBitmap(paint);
}
@Override
public void drawLines(float[] pts, Paint paint) {
super.drawLines(pts, paint);
recordShaderBitmap(paint);
}
@Override
public void drawOval(RectF oval, Paint paint) {
super.drawOval(oval, paint);
recordShaderBitmap(paint);
}
@Override
public void drawPaint(Paint paint) {
super.drawPaint(paint);
recordShaderBitmap(paint);
}
@Override
public void drawPath(Path path, Paint paint) {
super.drawPath(path, paint);
recordShaderBitmap(paint);
}
@Override
public void drawPoint(float x, float y, Paint paint) {
super.drawPoint(x, y, paint);
recordShaderBitmap(paint);
}
@Override
public void drawPoints(float[] pts, int offset, int count, Paint paint) {
super.drawPoints(pts, offset, count, paint);
recordShaderBitmap(paint);
}
@Override
public void drawPoints(float[] pts, Paint paint) {
super.drawPoints(pts, paint);
recordShaderBitmap(paint);
}
@Override
public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) {
super.drawPosText(text, index, count, pos, paint);
recordShaderBitmap(paint);
}
@Override
public void drawPosText(String text, float[] pos, Paint paint) {
super.drawPosText(text, pos, paint);
recordShaderBitmap(paint);
}
@Override
public void drawRect(float left, float top, float right, float bottom, Paint paint) {
super.drawRect(left, top, right, bottom, paint);
recordShaderBitmap(paint);
}
@Override
public void drawRect(Rect r, Paint paint) {
super.drawRect(r, paint);
recordShaderBitmap(paint);
}
@Override
public void drawRect(RectF r, Paint paint) {
super.drawRect(r, paint);
recordShaderBitmap(paint);
}
@Override
public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) {
super.drawRoundRect(rect, rx, ry, paint);
recordShaderBitmap(paint);
}
@Override
public void drawText(char[] text, int index, int count, float x, float y, Paint paint) {
super.drawText(text, index, count, x, y, paint);
recordShaderBitmap(paint);
}
@Override
public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) {
super.drawText(text, start, end, x, y, paint);
recordShaderBitmap(paint);
}
@Override
public void drawText(String text, int start, int end, float x, float y, Paint paint) {
super.drawText(text, start, end, x, y, paint);
recordShaderBitmap(paint);
}
@Override
public void drawText(String text, float x, float y, Paint paint) {
super.drawText(text, x, y, paint);
recordShaderBitmap(paint);
}
@Override
public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset,
float vOffset, Paint paint) {
super.drawTextOnPath(text, index, count, path, hOffset, vOffset, paint);
recordShaderBitmap(paint);
}
@Override
public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) {
super.drawTextOnPath(text, path, hOffset, vOffset, paint);
recordShaderBitmap(paint);
}
@Override
public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount,
float x, float y, int dir, Paint paint) {
super.drawTextRun(text, index, count, contextIndex, contextCount, x, y, dir, paint);
recordShaderBitmap(paint);
}
@Override
public void drawTextRun(CharSequence text, int start, int end, int contextStart,
int contextEnd, float x, float y, int dir, Paint paint) {
super.drawTextRun(text, start, end, contextStart, contextEnd, x, y, dir, paint);
recordShaderBitmap(paint);
}
@Override
public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset,
float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices,
int indexOffset, int indexCount, Paint paint) {
super.drawVertices(mode, vertexCount, verts, vertOffset, texs, texOffset, colors,
colorOffset, indices, indexOffset, indexCount, paint);
recordShaderBitmap(paint);
}
}
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