Java tutorial
/* * 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 android.graphics.drawable.shapes; import android.graphics.Canvas; import android.graphics.Outline; import android.graphics.Paint; import android.graphics.RectF; /** * Defines a rectangle shape. * <p> * The rectangle can be drawn to a Canvas with its own draw() method, * but more graphical control is available if you instead pass * the RectShape to a {@link android.graphics.drawable.ShapeDrawable}. */ public class RectShape extends Shape { private RectF mRect = new RectF(); public RectShape() { } @Override public void draw(Canvas canvas, Paint paint) { canvas.drawRect(mRect, paint); } @Override public void getOutline(Outline outline) { final RectF rect = rect(); outline.setRect((int) Math.ceil(rect.left), (int) Math.ceil(rect.top), (int) Math.floor(rect.right), (int) Math.floor(rect.bottom)); } @Override protected void onResize(float width, float height) { mRect.set(0, 0, width, height); } /** * Returns the RectF that defines this rectangle's bounds. */ protected final RectF rect() { return mRect; } @Override public RectShape clone() throws CloneNotSupportedException { final RectShape shape = (RectShape) super.clone(); shape.mRect = new RectF(mRect); return shape; } }