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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.Matrix;
import android.graphics.Paint;
import android.graphics.RadialGradient;
import android.graphics.Shader;
import android.graphics.SweepGradient;
import android.os.Bundle;
import android.view.View;
@SuppressWarnings({"UnusedDeclaration"})
public class AdvancedGradientsActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new GradientsView(this));
}
public static class GradientsView extends View {
private final Paint mPaint;
private final SweepGradient mSweepGradient;
private final RadialGradient mRadialGradient;
private final Matrix mMatrix;
private final Matrix mMatrix2;
private final Matrix mMatrix3;
public GradientsView(Context c) {
super(c);
mSweepGradient = new SweepGradient(0.0f, 0.0f, 0xff000000, 0xffffffff);
mRadialGradient = new RadialGradient(0.0f, 0.0f, 100.0f, 0xff000000, 0xffffffff,
Shader.TileMode.MIRROR);
mMatrix = new Matrix();
mMatrix.setRotate(-45, 0.0f, 0.0f);
mMatrix.postTranslate(100.0f, 100.0f);
mMatrix2 = new Matrix();
mMatrix2.setScale(1.0f, 2.0f);
mMatrix2.postRotate(-45, 0.0f, 0.0f);
mMatrix3 = new Matrix();
mMatrix3.setTranslate(100.0f, 100.0f);
mPaint = new Paint();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawRGB(255, 255, 255);
canvas.save();
canvas.translate(130.0f, 100.0f);
mSweepGradient.setLocalMatrix(mMatrix3);
mPaint.setShader(mSweepGradient);
canvas.drawRect(0.0f, 0.0f, 200.0f, 200.0f, mPaint);
canvas.translate(400.0f, 000.0f);
mSweepGradient.setLocalMatrix(mMatrix);
mPaint.setShader(mSweepGradient);
canvas.drawRect(0.0f, 0.0f, 200.0f, 200.0f, mPaint);
canvas.translate(400.0f, 000.0f);
mSweepGradient.setLocalMatrix(mMatrix2);
mPaint.setShader(mSweepGradient);
canvas.drawRect(0.0f, 0.0f, 200.0f, 200.0f, mPaint);
canvas.translate(-800.0f, 300.0f);
mRadialGradient.setLocalMatrix(null);
mPaint.setShader(mRadialGradient);
canvas.drawRect(0.0f, 0.0f, 200.0f, 200.0f, mPaint);
canvas.translate(400.0f, 000.0f);
mRadialGradient.setLocalMatrix(mMatrix);
mPaint.setShader(mRadialGradient);
canvas.drawRect(0.0f, 0.0f, 200.0f, 200.0f, mPaint);
canvas.translate(400.0f, 000.0f);
mRadialGradient.setLocalMatrix(mMatrix2);
mPaint.setShader(mRadialGradient);
canvas.drawRect(0.0f, 0.0f, 200.0f, 200.0f, mPaint);
canvas.restore();
}
}
}
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