| /* |
| * 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(); |
| } |
| } |
| } |