Android example source code file (ShapeDrawable1.java)

This example Android source code file (ShapeDrawable1.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, arcshape, drawable, drawing, graphics, myshapedrawable, override, paint, path, patheffect, pathshape, rectf, roundrectshape, sampleview, shader, shapedrawable, shapedrawable1, sweepgradient, ui, view

The ShapeDrawable1.java Android example source code

/*
 * 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.Drawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.*;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.*;

public class ShapeDrawable1 extends GraphicsActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new SampleView(this));
    }
    
    private static class SampleView extends View {
        private ShapeDrawable[] mDrawables;
        
        private static Shader makeSweep() {
            return new SweepGradient(150, 25,
                new int[] { 0xFFFF0000, 0xFF00FF00, 0xFF0000FF, 0xFFFF0000 },
                null);
        }
        
        private static Shader makeLinear() {
            return new LinearGradient(0, 0, 50, 50,
                              new int[] { 0xFFFF0000, 0xFF00FF00, 0xFF0000FF },
                              null, Shader.TileMode.MIRROR);
        }
        
        private static Shader makeTiling() {
            int[] pixels = new int[] { 0xFFFF0000, 0xFF00FF00, 0xFF0000FF, 0};
            Bitmap bm = Bitmap.createBitmap(pixels, 2, 2,
                                            Bitmap.Config.ARGB_8888);
            
            return new BitmapShader(bm, Shader.TileMode.REPEAT,
                                        Shader.TileMode.REPEAT);
        }
        
        private static class MyShapeDrawable extends ShapeDrawable {
            private Paint mStrokePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
            
            public MyShapeDrawable(Shape s) {
                super(s);
                mStrokePaint.setStyle(Paint.Style.STROKE);
            }
            
            public Paint getStrokePaint() {
                return mStrokePaint;
            }
            
            @Override protected void onDraw(Shape s, Canvas c, Paint p) {
                s.draw(c, p);
                s.draw(c, mStrokePaint);
            }
        }
        
        public SampleView(Context context) {
            super(context);
            setFocusable(true);

            float[] outerR = new float[] { 12, 12, 12, 12, 0, 0, 0, 0 };
            RectF   inset = new RectF(6, 6, 6, 6);
            float[] innerR = new float[] { 12, 12, 0, 0, 12, 12, 0, 0 };
            
            Path path = new Path();
            path.moveTo(50, 0);
            path.lineTo(0, 50);
            path.lineTo(50, 100);
            path.lineTo(100, 50);
            path.close();
            
            mDrawables = new ShapeDrawable[7];
            mDrawables[0] = new ShapeDrawable(new RectShape());
            mDrawables[1] = new ShapeDrawable(new OvalShape());
            mDrawables[2] = new ShapeDrawable(new RoundRectShape(outerR, null,
                                                                 null));
            mDrawables[3] = new ShapeDrawable(new RoundRectShape(outerR, inset,
                                                                 null));
            mDrawables[4] = new ShapeDrawable(new RoundRectShape(outerR, inset,
                                                                 innerR));
            mDrawables[5] = new ShapeDrawable(new PathShape(path, 100, 100));
            mDrawables[6] = new MyShapeDrawable(new ArcShape(45, -270));
            
            mDrawables[0].getPaint().setColor(0xFFFF0000);
            mDrawables[1].getPaint().setColor(0xFF00FF00);
            mDrawables[2].getPaint().setColor(0xFF0000FF);
            mDrawables[3].getPaint().setShader(makeSweep());
            mDrawables[4].getPaint().setShader(makeLinear());
            mDrawables[5].getPaint().setShader(makeTiling());
            mDrawables[6].getPaint().setColor(0x88FF8844);
            
            PathEffect pe = new DiscretePathEffect(10, 4);
            PathEffect pe2 = new CornerPathEffect(4);
            mDrawables[3].getPaint().setPathEffect(
                                                new ComposePathEffect(pe2, pe));
        
            MyShapeDrawable msd = (MyShapeDrawable)mDrawables[6];
            msd.getStrokePaint().setStrokeWidth(4);
        }
        
        @Override protected void onDraw(Canvas canvas) {
            
            int x = 10;
            int y = 10;
            int width = 300;
            int height = 50;
            
            for (Drawable dr : mDrawables) {
                dr.setBounds(x, y, x + width, y + height);
                dr.draw(canvas);                
                y += height + 5;
            }
        }
    }
}