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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 com.android.test.hwui;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.os.Bundle;
import android.view.View;
import static android.graphics.PorterDuff.Mode;
@SuppressWarnings({"UnusedDeclaration"})
public class XfermodeActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new XfermodesView(this));
}
static class XfermodesView extends View {
private final Paint mBluePaint;
private final Paint mRedPaint;
XfermodesView(Context c) {
super(c);
mBluePaint = new Paint();
mBluePaint.setColor(0xff0000ff);
mRedPaint = new Paint();
mRedPaint.setColor(0x7fff0000);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
//canvas.drawRGB(255, 255, 255);
canvas.translate(100.0f, 100.0f);
// SRC modes
canvas.save();
drawRects(canvas, Mode.SRC_OVER);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.SRC_IN);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.SRC_OUT);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.SRC_ATOP);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.SRC);
canvas.restore();
canvas.translate(100.0f, 0.0f);
// DST modes
canvas.save();
drawRects(canvas, Mode.DST_OVER);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.DST_IN);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.DST_OUT);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.DST_ATOP);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.DST);
canvas.restore();
canvas.translate(100.0f, 0.0f);
// Other modes
canvas.save();
drawRects(canvas, Mode.CLEAR);
canvas.translate(0.0f, 100.0f);
drawRects(canvas, Mode.XOR);
canvas.translate(0.0f, 100.0f);
mBluePaint.setAlpha(127);
canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint);
canvas.translate(0.0f, 100.0f);
mBluePaint.setAlpha(10);
mBluePaint.setColor(0x7f0000ff);
canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint);
mBluePaint.setColor(0xff0000ff);
mBluePaint.setAlpha(255);
canvas.restore();
}
private void drawRects(Canvas canvas, PorterDuff.Mode mode) {
canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint);
canvas.save();
canvas.translate(25.0f, 25.0f);
mRedPaint.setXfermode(new PorterDuffXfermode(mode));
canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mRedPaint);
canvas.restore();
}
}
}
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