| /* |
| * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.awt; |
| |
| /** |
| * An {@code Insets} object is a representation of the borders |
| * of a container. It specifies the space that a container must leave |
| * at each of its edges. The space can be a border, a blank space, or |
| * a title. |
| * |
| * @author Arthur van Hoff |
| * @author Sami Shaio |
| * @see java.awt.LayoutManager |
| * @see java.awt.Container |
| * @since 1.0 |
| */ |
| public class Insets implements Cloneable, java.io.Serializable { |
| |
| /** |
| * The inset from the top. |
| * This value is added to the Top of the rectangle |
| * to yield a new location for the Top. |
| * |
| * @serial |
| * @see #clone() |
| */ |
| public int top; |
| |
| /** |
| * The inset from the left. |
| * This value is added to the Left of the rectangle |
| * to yield a new location for the Left edge. |
| * |
| * @serial |
| * @see #clone() |
| */ |
| public int left; |
| |
| /** |
| * The inset from the bottom. |
| * This value is subtracted from the Bottom of the rectangle |
| * to yield a new location for the Bottom. |
| * |
| * @serial |
| * @see #clone() |
| */ |
| public int bottom; |
| |
| /** |
| * The inset from the right. |
| * This value is subtracted from the Right of the rectangle |
| * to yield a new location for the Right edge. |
| * |
| * @serial |
| * @see #clone() |
| */ |
| public int right; |
| |
| /* |
| * JDK 1.1 serialVersionUID |
| */ |
| private static final long serialVersionUID = -2272572637695466749L; |
| |
| static { |
| /* ensure that the necessary native libraries are loaded */ |
| Toolkit.loadLibraries(); |
| if (!GraphicsEnvironment.isHeadless()) { |
| initIDs(); |
| } |
| } |
| |
| /** |
| * Creates and initializes a new {@code Insets} object with the |
| * specified top, left, bottom, and right insets. |
| * @param top the inset from the top. |
| * @param left the inset from the left. |
| * @param bottom the inset from the bottom. |
| * @param right the inset from the right. |
| */ |
| public Insets(int top, int left, int bottom, int right) { |
| this.top = top; |
| this.left = left; |
| this.bottom = bottom; |
| this.right = right; |
| } |
| |
| /** |
| * Set top, left, bottom, and right to the specified values |
| * |
| * @param top the inset from the top. |
| * @param left the inset from the left. |
| * @param bottom the inset from the bottom. |
| * @param right the inset from the right. |
| * @since 1.5 |
| */ |
| public void set(int top, int left, int bottom, int right) { |
| this.top = top; |
| this.left = left; |
| this.bottom = bottom; |
| this.right = right; |
| } |
| |
| /** |
| * Checks whether two insets objects are equal. Two instances |
| * of {@code Insets} are equal if the four integer values |
| * of the fields {@code top}, {@code left}, |
| * {@code bottom}, and {@code right} are all equal. |
| * @return {@code true} if the two insets are equal; |
| * otherwise {@code false}. |
| * @since 1.1 |
| */ |
| public boolean equals(Object obj) { |
| if (obj instanceof Insets) { |
| Insets insets = (Insets)obj; |
| return ((top == insets.top) && (left == insets.left) && |
| (bottom == insets.bottom) && (right == insets.right)); |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the hash code for this Insets. |
| * |
| * @return a hash code for this Insets. |
| */ |
| public int hashCode() { |
| int sum1 = left + bottom; |
| int sum2 = right + top; |
| int val1 = sum1 * (sum1 + 1)/2 + left; |
| int val2 = sum2 * (sum2 + 1)/2 + top; |
| int sum3 = val1 + val2; |
| return sum3 * (sum3 + 1)/2 + val2; |
| } |
| |
| /** |
| * Returns a string representation of this {@code Insets} object. |
| * This method is intended to be used only for debugging purposes, and |
| * the content and format of the returned string may vary between |
| * implementations. The returned string may be empty but may not be |
| * {@code null}. |
| * |
| * @return a string representation of this {@code Insets} object. |
| */ |
| public String toString() { |
| return getClass().getName() + "[top=" + top + ",left=" + left + ",bottom=" + bottom + ",right=" + right + "]"; |
| } |
| |
| /** |
| * Create a copy of this object. |
| * @return a copy of this {@code Insets} object. |
| */ |
| public Object clone() { |
| try { |
| return super.clone(); |
| } catch (CloneNotSupportedException e) { |
| // this shouldn't happen, since we are Cloneable |
| throw new InternalError(e); |
| } |
| } |
| /** |
| * Initialize JNI field and method IDs |
| */ |
| private static native void initIDs(); |
| |
| } |