115 lines
3.2 KiB
Java
115 lines
3.2 KiB
Java
/*
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* Copyright (C) 2006 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;
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/**
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* An Insets instance holds four integer offsets which describe changes to the four
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* edges of a Rectangle. By convention, positive values move edges towards the
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* centre of the rectangle.
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* <p>
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* Insets are immutable so may be treated as values.
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*
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* @hide
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*/
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public class Insets {
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public static final Insets NONE = new Insets(0, 0, 0, 0);
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public final int left;
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public final int top;
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public final int right;
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public final int bottom;
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private Insets(int left, int top, int right, int bottom) {
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this.left = left;
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this.top = top;
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this.right = right;
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this.bottom = bottom;
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}
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// Factory methods
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/**
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* Return an Insets instance with the appropriate values.
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*
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* @param left the left inset
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* @param top the top inset
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* @param right the right inset
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* @param bottom the bottom inset
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*
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* @return Insets instance with the appropriate values
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*/
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public static Insets of(int left, int top, int right, int bottom) {
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if (left == 0 && top == 0 && right == 0 && bottom == 0) {
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return NONE;
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}
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return new Insets(left, top, right, bottom);
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}
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/**
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* Return an Insets instance with the appropriate values.
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*
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* @param r the rectangle from which to take the values
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*
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* @return an Insets instance with the appropriate values
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*/
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public static Insets of(Rect r) {
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return (r == null) ? NONE : of(r.left, r.top, r.right, r.bottom);
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}
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/**
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* Two Insets instances are equal iff they belong to the same class and their fields are
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* pairwise equal.
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*
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* @param o the object to compare this instance with.
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*
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* @return true iff this object is equal {@code o}
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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) return true;
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if (o == null || getClass() != o.getClass()) return false;
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Insets insets = (Insets) o;
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if (bottom != insets.bottom) return false;
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if (left != insets.left) return false;
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if (right != insets.right) return false;
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if (top != insets.top) return false;
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return true;
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}
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@Override
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public int hashCode() {
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int result = left;
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result = 31 * result + top;
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result = 31 * result + right;
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result = 31 * result + bottom;
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return result;
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}
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@Override
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public String toString() {
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return "Insets{" +
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"left=" + left +
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", top=" + top +
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", right=" + right +
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", bottom=" + bottom +
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'}';
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}
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}
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