/* * Copyright (C) 2007 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.example.android.apis.graphics;import com.example.android.apis.R;import android.app.Activity;import android.content.Context;import android.graphics.*;import android.graphics.drawable.*;import android.os.Bundle;import android.view.KeyEvent;import android.view.*;public class RoundRects extends GraphicsActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(new SampleView(this));    }        private static class SampleView extends View {        private Path    mPath;        private Paint   mPaint;        private Rect    mRect;        private GradientDrawable mDrawable;        public SampleView(Context context) {            super(context);            setFocusable(true);            mPath = new Path();            mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);            mRect = new Rect(0, 0, 120, 120);                        mDrawable = new GradientDrawable(GradientDrawable.Orientation.TL_BR,                                             new int[] { 0xFFFF0000, 0xFF00FF00,                                                 0xFF0000FF });            mDrawable.setShape(GradientDrawable.RECTANGLE);            mDrawable.setGradientRadius((float)(Math.sqrt(2) * 60));        }                static void setCornerRadii(GradientDrawable drawable, float r0,                                   float r1, float r2, float r3) {            drawable.setCornerRadii(new float[] { r0, r0, r1, r1,                                                  r2, r2, r3, r3 });        }                @Override protected void onDraw(Canvas canvas) {                        mDrawable.setBounds(mRect);            float r = 16;                        canvas.save();            canvas.translate(10, 10);            mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);            setCornerRadii(mDrawable, r, r, 0, 0);            mDrawable.draw(canvas);            canvas.restore();                        canvas.save();            canvas.translate(10 + mRect.width() + 10, 10);            mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);            setCornerRadii(mDrawable, 0, 0, r, r);            mDrawable.draw(canvas);            canvas.restore();                        canvas.translate(0, mRect.height() + 10);                canvas.save();            canvas.translate(10, 10);            mDrawable.setGradientType(GradientDrawable.SWEEP_GRADIENT);            setCornerRadii(mDrawable, 0, r, r, 0);            mDrawable.draw(canvas);            canvas.restore();                        canvas.save();            canvas.translate(10 + mRect.width() + 10, 10);            mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);            setCornerRadii(mDrawable, r, 0, 0, r);            mDrawable.draw(canvas);            canvas.restore();                        canvas.translate(0, mRect.height() + 10);                        canvas.save();            canvas.translate(10, 10);            mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);            setCornerRadii(mDrawable, r, 0, r, 0);            mDrawable.draw(canvas);            canvas.restore();                        canvas.save();            canvas.translate(10 + mRect.width() + 10, 10);            mDrawable.setGradientType(GradientDrawable.SWEEP_GRADIENT);            setCornerRadii(mDrawable, 0, r, 0, r);            mDrawable.draw(canvas);            canvas.restore();                    }    }}