1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics.drawable.shapes; 18 19 import android.annotation.NonNull; 20 import android.graphics.Canvas; 21 import android.graphics.Paint; 22 import android.graphics.Path; 23 24 /** 25 * Creates geometric paths, utilizing the {@link android.graphics.Path} class. 26 * <p> 27 * The path can be drawn to a Canvas with its own draw() method, 28 * but more graphical control is available if you instead pass 29 * the PathShape to a {@link android.graphics.drawable.ShapeDrawable}. 30 */ 31 public class PathShape extends Shape { 32 private final float mStdWidth; 33 private final float mStdHeight; 34 35 private Path mPath; 36 37 private float mScaleX; // cached from onResize 38 private float mScaleY; // cached from onResize 39 40 /** 41 * PathShape constructor. 42 * 43 * @param path a Path that defines the geometric paths for this shape 44 * @param stdWidth the standard width for the shape. Any changes to the 45 * width with resize() will result in a width scaled based 46 * on the new width divided by this width. 47 * @param stdHeight the standard height for the shape. Any changes to the 48 * height with resize() will result in a height scaled based 49 * on the new height divided by this height. 50 */ PathShape(@onNull Path path, float stdWidth, float stdHeight)51 public PathShape(@NonNull Path path, float stdWidth, float stdHeight) { 52 mPath = path; 53 mStdWidth = stdWidth; 54 mStdHeight = stdHeight; 55 } 56 57 @Override draw(Canvas canvas, Paint paint)58 public void draw(Canvas canvas, Paint paint) { 59 canvas.save(); 60 canvas.scale(mScaleX, mScaleY); 61 canvas.drawPath(mPath, paint); 62 canvas.restore(); 63 } 64 65 @Override onResize(float width, float height)66 protected void onResize(float width, float height) { 67 mScaleX = width / mStdWidth; 68 mScaleY = height / mStdHeight; 69 } 70 71 @Override clone()72 public PathShape clone() throws CloneNotSupportedException { 73 final PathShape shape = (PathShape) super.clone(); 74 shape.mPath = new Path(mPath); 75 return shape; 76 } 77 } 78 79