106 lines
3.4 KiB
Java
106 lines
3.4 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics.drawable.shapes;
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import android.annotation.NonNull;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Path;
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import java.util.Objects;
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/**
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* Creates geometric paths, utilizing the {@link android.graphics.Path} class.
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* <p>
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* The path can be drawn to a Canvas with its own draw() method,
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* but more graphical control is available if you instead pass
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* the PathShape to a {@link android.graphics.drawable.ShapeDrawable}.
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*/
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public class PathShape extends Shape {
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private final float mStdWidth;
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private final float mStdHeight;
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private Path mPath;
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private float mScaleX; // cached from onResize
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private float mScaleY; // cached from onResize
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/**
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* PathShape constructor.
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*
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* @param path a Path that defines the geometric paths for this shape
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* @param stdWidth the standard width for the shape. Any changes to the
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* width with resize() will result in a width scaled based
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* on the new width divided by this width.
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* @param stdHeight the standard height for the shape. Any changes to the
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* height with resize() will result in a height scaled based
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* on the new height divided by this height.
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*/
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public PathShape(@NonNull Path path, float stdWidth, float stdHeight) {
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mPath = path;
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mStdWidth = stdWidth;
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mStdHeight = stdHeight;
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}
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@Override
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public void draw(Canvas canvas, Paint paint) {
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canvas.save();
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canvas.scale(mScaleX, mScaleY);
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canvas.drawPath(mPath, paint);
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canvas.restore();
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}
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@Override
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protected void onResize(float width, float height) {
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mScaleX = width / mStdWidth;
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mScaleY = height / mStdHeight;
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}
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@Override
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public PathShape clone() throws CloneNotSupportedException {
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final PathShape shape = (PathShape) super.clone();
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shape.mPath = new Path(mPath);
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return shape;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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PathShape pathShape = (PathShape) o;
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return Float.compare(pathShape.mStdWidth, mStdWidth) == 0
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&& Float.compare(pathShape.mStdHeight, mStdHeight) == 0
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&& Float.compare(pathShape.mScaleX, mScaleX) == 0
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&& Float.compare(pathShape.mScaleY, mScaleY) == 0
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// Path does not have equals implementation but in case it gains one, use it here
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&& Objects.equals(mPath, pathShape.mPath);
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}
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@Override
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public int hashCode() {
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return Objects.hash(super.hashCode(), mStdWidth, mStdHeight, mPath, mScaleX, mScaleY);
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}
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}
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