102 lines
2.9 KiB
Java
102 lines
2.9 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.graphics.Canvas;
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import android.graphics.Outline;
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import android.graphics.Paint;
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import java.util.Objects;
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/**
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* Creates an arc shape. The arc shape starts at a specified angle and sweeps
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* clockwise, drawing slices of pie.
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* <p>
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* The arc can be drawn to a {@link Canvas} with its own
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* {@link #draw(Canvas, Paint)} method, but more graphical control is available
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* if you instead pass the ArcShape to a
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* {@link android.graphics.drawable.ShapeDrawable}.
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*/
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public class ArcShape extends RectShape {
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private final float mStartAngle;
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private final float mSweepAngle;
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/**
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* ArcShape constructor.
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*
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* @param startAngle the angle (in degrees) where the arc begins
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* @param sweepAngle the sweep angle (in degrees). Anything equal to or
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* greater than 360 results in a complete circle/oval.
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*/
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public ArcShape(float startAngle, float sweepAngle) {
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mStartAngle = startAngle;
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mSweepAngle = sweepAngle;
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}
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/**
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* @return the angle (in degrees) where the arc begins
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*/
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public final float getStartAngle() {
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return mStartAngle;
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}
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/**
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* @return the sweep angle (in degrees)
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*/
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public final float getSweepAngle() {
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return mSweepAngle;
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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.drawArc(rect(), mStartAngle, mSweepAngle, true, paint);
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}
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@Override
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public void getOutline(Outline outline) {
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// Since we don't support concave outlines, arc shape does not attempt
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// to provide an outline.
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}
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@Override
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public ArcShape clone() throws CloneNotSupportedException {
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return (ArcShape) super.clone();
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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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ArcShape arcShape = (ArcShape) o;
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return Float.compare(arcShape.mStartAngle, mStartAngle) == 0
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&& Float.compare(arcShape.mSweepAngle, mSweepAngle) == 0;
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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(), mStartAngle, mSweepAngle);
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}
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}
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