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727 lines
24 KiB
727 lines
24 KiB
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.swing.border;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Insets;
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import java.awt.Rectangle;
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import java.awt.geom.Path2D;
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import java.beans.ConstructorProperties;
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import javax.swing.JComponent;
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import javax.swing.JLabel;
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import javax.swing.UIManager;
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import javax.swing.plaf.basic.BasicHTML;
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/**
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* A class which implements an arbitrary border
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* with the addition of a String title in a
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* specified position and justification.
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* <p>
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* If the border, font, or color property values are not
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* specified in the constructor or by invoking the appropriate
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* set methods, the property values will be defined by the current
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* look and feel, using the following property names in the
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* Defaults Table:
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* <ul>
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* <li>"TitledBorder.border"
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* <li>"TitledBorder.font"
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* <li>"TitledBorder.titleColor"
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* </ul>
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans™
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* @author David Kloba
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* @author Amy Fowler
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*/
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@SuppressWarnings("serial")
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public class TitledBorder extends AbstractBorder
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{
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protected String title;
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protected Border border;
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protected int titlePosition;
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protected int titleJustification;
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protected Font titleFont;
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protected Color titleColor;
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private final JLabel label;
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/**
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* Use the default vertical orientation for the title text.
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*/
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static public final int DEFAULT_POSITION = 0;
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/** Position the title above the border's top line. */
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static public final int ABOVE_TOP = 1;
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/** Position the title in the middle of the border's top line. */
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static public final int TOP = 2;
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/** Position the title below the border's top line. */
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static public final int BELOW_TOP = 3;
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/** Position the title above the border's bottom line. */
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static public final int ABOVE_BOTTOM = 4;
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/** Position the title in the middle of the border's bottom line. */
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static public final int BOTTOM = 5;
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/** Position the title below the border's bottom line. */
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static public final int BELOW_BOTTOM = 6;
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/**
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* Use the default justification for the title text.
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*/
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static public final int DEFAULT_JUSTIFICATION = 0;
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/** Position title text at the left side of the border line. */
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static public final int LEFT = 1;
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/** Position title text in the center of the border line. */
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static public final int CENTER = 2;
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/** Position title text at the right side of the border line. */
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static public final int RIGHT = 3;
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/** Position title text at the left side of the border line
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* for left to right orientation, at the right side of the
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* border line for right to left orientation.
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*/
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static public final int LEADING = 4;
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/** Position title text at the right side of the border line
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* for left to right orientation, at the left side of the
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* border line for right to left orientation.
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*/
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static public final int TRAILING = 5;
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// Space between the border and the component's edge
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static protected final int EDGE_SPACING = 2;
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// Space between the border and text
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static protected final int TEXT_SPACING = 2;
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// Horizontal inset of text that is left or right justified
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static protected final int TEXT_INSET_H = 5;
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/**
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* Creates a TitledBorder instance.
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*
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* @param title the title the border should display
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*/
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public TitledBorder(String title) {
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this(null, title, LEADING, DEFAULT_POSITION, null, null);
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}
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/**
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* Creates a TitledBorder instance with the specified border
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* and an empty title.
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*
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* @param border the border
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*/
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public TitledBorder(Border border) {
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this(border, "", LEADING, DEFAULT_POSITION, null, null);
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}
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/**
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* Creates a TitledBorder instance with the specified border
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* and title.
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*
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* @param border the border
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* @param title the title the border should display
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*/
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public TitledBorder(Border border, String title) {
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this(border, title, LEADING, DEFAULT_POSITION, null, null);
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}
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/**
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* Creates a TitledBorder instance with the specified border,
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* title, title-justification, and title-position.
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*
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* @param border the border
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* @param title the title the border should display
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* @param titleJustification the justification for the title
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* @param titlePosition the position for the title
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*/
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public TitledBorder(Border border,
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String title,
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int titleJustification,
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int titlePosition) {
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this(border, title, titleJustification,
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titlePosition, null, null);
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}
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/**
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* Creates a TitledBorder instance with the specified border,
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* title, title-justification, title-position, and title-font.
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*
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* @param border the border
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* @param title the title the border should display
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* @param titleJustification the justification for the title
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* @param titlePosition the position for the title
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* @param titleFont the font for rendering the title
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*/
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public TitledBorder(Border border,
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String title,
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int titleJustification,
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int titlePosition,
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Font titleFont) {
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this(border, title, titleJustification,
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titlePosition, titleFont, null);
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}
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/**
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* Creates a TitledBorder instance with the specified border,
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* title, title-justification, title-position, title-font, and
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* title-color.
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*
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* @param border the border
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* @param title the title the border should display
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* @param titleJustification the justification for the title
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* @param titlePosition the position for the title
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* @param titleFont the font of the title
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* @param titleColor the color of the title
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*/
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@ConstructorProperties({"border", "title", "titleJustification", "titlePosition", "titleFont", "titleColor"})
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public TitledBorder(Border border,
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String title,
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int titleJustification,
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int titlePosition,
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Font titleFont,
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Color titleColor) {
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this.title = title;
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this.border = border;
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this.titleFont = titleFont;
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this.titleColor = titleColor;
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setTitleJustification(titleJustification);
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setTitlePosition(titlePosition);
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this.label = new JLabel();
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this.label.setOpaque(false);
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this.label.putClientProperty(BasicHTML.propertyKey, null);
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}
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/**
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* Paints the border for the specified component with the
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* specified position and size.
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* @param c the component for which this border is being painted
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* @param g the paint graphics
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* @param x the x position of the painted border
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* @param y the y position of the painted border
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* @param width the width of the painted border
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* @param height the height of the painted border
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*/
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public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
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Border border = getBorder();
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String title = getTitle();
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if ((title != null) && !title.isEmpty()) {
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int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
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JLabel label = getLabel(c);
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Dimension size = label.getPreferredSize();
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Insets insets = getBorderInsets(border, c, new Insets(0, 0, 0, 0));
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int borderX = x + edge;
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int borderY = y + edge;
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int borderW = width - edge - edge;
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int borderH = height - edge - edge;
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int labelY = y;
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int labelH = size.height;
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int position = getPosition();
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switch (position) {
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case ABOVE_TOP:
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insets.left = 0;
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insets.right = 0;
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borderY += labelH - edge;
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borderH -= labelH - edge;
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break;
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case TOP:
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insets.top = edge + insets.top/2 - labelH/2;
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if (insets.top < edge) {
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borderY -= insets.top;
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borderH += insets.top;
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}
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else {
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labelY += insets.top;
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}
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break;
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case BELOW_TOP:
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labelY += insets.top + edge;
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break;
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case ABOVE_BOTTOM:
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labelY += height - labelH - insets.bottom - edge;
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break;
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case BOTTOM:
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labelY += height - labelH;
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insets.bottom = edge + (insets.bottom - labelH) / 2;
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if (insets.bottom < edge) {
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borderH += insets.bottom;
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}
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else {
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labelY -= insets.bottom;
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}
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break;
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case BELOW_BOTTOM:
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insets.left = 0;
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insets.right = 0;
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labelY += height - labelH;
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borderH -= labelH - edge;
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break;
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}
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insets.left += edge + TEXT_INSET_H;
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insets.right += edge + TEXT_INSET_H;
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int labelX = x;
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int labelW = width - insets.left - insets.right;
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if (labelW > size.width) {
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labelW = size.width;
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}
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switch (getJustification(c)) {
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case LEFT:
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labelX += insets.left;
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break;
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case RIGHT:
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labelX += width - insets.right - labelW;
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break;
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case CENTER:
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labelX += (width - labelW) / 2;
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break;
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}
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if (border != null) {
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if ((position != TOP) && (position != BOTTOM)) {
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border.paintBorder(c, g, borderX, borderY, borderW, borderH);
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}
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else {
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Graphics g2 = g.create();
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if (g2 instanceof Graphics2D) {
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Graphics2D g2d = (Graphics2D) g2;
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Path2D path = new Path2D.Float();
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path.append(new Rectangle(borderX, borderY, borderW, labelY - borderY), false);
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path.append(new Rectangle(borderX, labelY, labelX - borderX - TEXT_SPACING, labelH), false);
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path.append(new Rectangle(labelX + labelW + TEXT_SPACING, labelY, borderX - labelX + borderW - labelW - TEXT_SPACING, labelH), false);
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path.append(new Rectangle(borderX, labelY + labelH, borderW, borderY - labelY + borderH - labelH), false);
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g2d.clip(path);
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}
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border.paintBorder(c, g2, borderX, borderY, borderW, borderH);
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g2.dispose();
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}
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}
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g.translate(labelX, labelY);
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label.setSize(labelW, labelH);
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label.paint(g);
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g.translate(-labelX, -labelY);
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}
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else if (border != null) {
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border.paintBorder(c, g, x, y, width, height);
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}
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}
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/**
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* Reinitialize the insets parameter with this Border's current Insets.
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* @param c the component for which this border insets value applies
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* @param insets the object to be reinitialized
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*/
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public Insets getBorderInsets(Component c, Insets insets) {
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Border border = getBorder();
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insets = getBorderInsets(border, c, insets);
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String title = getTitle();
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if ((title != null) && !title.isEmpty()) {
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int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
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JLabel label = getLabel(c);
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Dimension size = label.getPreferredSize();
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switch (getPosition()) {
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case ABOVE_TOP:
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insets.top += size.height - edge;
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break;
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case TOP: {
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if (insets.top < size.height) {
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insets.top = size.height - edge;
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}
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break;
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}
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case BELOW_TOP:
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insets.top += size.height;
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break;
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case ABOVE_BOTTOM:
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insets.bottom += size.height;
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break;
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case BOTTOM: {
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if (insets.bottom < size.height) {
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insets.bottom = size.height - edge;
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}
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break;
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}
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case BELOW_BOTTOM:
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insets.bottom += size.height - edge;
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break;
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}
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insets.top += edge + TEXT_SPACING;
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insets.left += edge + TEXT_SPACING;
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insets.right += edge + TEXT_SPACING;
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insets.bottom += edge + TEXT_SPACING;
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}
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return insets;
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}
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/**
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* Returns whether or not the border is opaque.
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*/
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public boolean isBorderOpaque() {
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return false;
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}
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/**
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* Returns the title of the titled border.
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*
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* @return the title of the titled border
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*/
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public String getTitle() {
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return title;
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}
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/**
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* Returns the border of the titled border.
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*
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* @return the border of the titled border
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*/
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public Border getBorder() {
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return border != null
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? border
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: UIManager.getBorder("TitledBorder.border");
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}
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/**
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* Returns the title-position of the titled border.
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*
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* @return the title-position of the titled border
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*/
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public int getTitlePosition() {
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return titlePosition;
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}
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/**
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* Returns the title-justification of the titled border.
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*
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* @return the title-justification of the titled border
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*/
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public int getTitleJustification() {
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return titleJustification;
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}
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/**
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* Returns the title-font of the titled border.
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*
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* @return the title-font of the titled border
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*/
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public Font getTitleFont() {
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return titleFont == null ? UIManager.getFont("TitledBorder.font") : titleFont;
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}
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/**
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* Returns the title-color of the titled border.
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*
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* @return the title-color of the titled border
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*/
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public Color getTitleColor() {
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return titleColor == null ? UIManager.getColor("TitledBorder.titleColor") : titleColor;
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}
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// REMIND(aim): remove all or some of these set methods?
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/**
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* Sets the title of the titled border.
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* @param title the title for the border
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*/
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public void setTitle(String title) {
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this.title = title;
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}
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/**
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* Sets the border of the titled border.
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* @param border the border
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*/
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public void setBorder(Border border) {
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this.border = border;
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}
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/**
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* Sets the title-position of the titled border.
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* @param titlePosition the position for the border
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*/
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public void setTitlePosition(int titlePosition) {
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switch (titlePosition) {
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case ABOVE_TOP:
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case TOP:
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case BELOW_TOP:
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case ABOVE_BOTTOM:
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case BOTTOM:
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case BELOW_BOTTOM:
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case DEFAULT_POSITION:
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this.titlePosition = titlePosition;
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break;
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default:
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throw new IllegalArgumentException(titlePosition +
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" is not a valid title position.");
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}
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}
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/**
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* Sets the title-justification of the titled border.
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* @param titleJustification the justification for the border
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*/
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public void setTitleJustification(int titleJustification) {
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switch (titleJustification) {
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case DEFAULT_JUSTIFICATION:
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case LEFT:
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case CENTER:
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case RIGHT:
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case LEADING:
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case TRAILING:
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this.titleJustification = titleJustification;
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break;
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default:
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throw new IllegalArgumentException(titleJustification +
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" is not a valid title justification.");
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}
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}
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/**
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* Sets the title-font of the titled border.
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* @param titleFont the font for the border title
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*/
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public void setTitleFont(Font titleFont) {
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this.titleFont = titleFont;
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}
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/**
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* Sets the title-color of the titled border.
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* @param titleColor the color for the border title
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*/
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public void setTitleColor(Color titleColor) {
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this.titleColor = titleColor;
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}
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/**
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* Returns the minimum dimensions this border requires
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* in order to fully display the border and title.
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* @param c the component where this border will be drawn
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* @return the {@code Dimension} object
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*/
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public Dimension getMinimumSize(Component c) {
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Insets insets = getBorderInsets(c);
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Dimension minSize = new Dimension(insets.right+insets.left,
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insets.top+insets.bottom);
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String title = getTitle();
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if ((title != null) && !title.isEmpty()) {
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JLabel label = getLabel(c);
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Dimension size = label.getPreferredSize();
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int position = getPosition();
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if ((position != ABOVE_TOP) && (position != BELOW_BOTTOM)) {
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minSize.width += size.width;
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}
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else if (minSize.width < size.width) {
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minSize.width += size.width;
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}
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}
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return minSize;
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}
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/**
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* Returns the baseline.
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*
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* @throws NullPointerException {@inheritDoc}
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|
* @throws IllegalArgumentException {@inheritDoc}
|
|
* @see javax.swing.JComponent#getBaseline(int, int)
|
|
* @since 1.6
|
|
*/
|
|
public int getBaseline(Component c, int width, int height) {
|
|
if (c == null) {
|
|
throw new NullPointerException("Must supply non-null component");
|
|
}
|
|
if (width < 0) {
|
|
throw new IllegalArgumentException("Width must be >= 0");
|
|
}
|
|
if (height < 0) {
|
|
throw new IllegalArgumentException("Height must be >= 0");
|
|
}
|
|
Border border = getBorder();
|
|
String title = getTitle();
|
|
if ((title != null) && !title.isEmpty()) {
|
|
int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
|
|
JLabel label = getLabel(c);
|
|
Dimension size = label.getPreferredSize();
|
|
Insets insets = getBorderInsets(border, c, new Insets(0, 0, 0, 0));
|
|
|
|
int baseline = label.getBaseline(size.width, size.height);
|
|
switch (getPosition()) {
|
|
case ABOVE_TOP:
|
|
return baseline;
|
|
case TOP:
|
|
insets.top = edge + (insets.top - size.height) / 2;
|
|
return (insets.top < edge)
|
|
? baseline
|
|
: baseline + insets.top;
|
|
case BELOW_TOP:
|
|
return baseline + insets.top + edge;
|
|
case ABOVE_BOTTOM:
|
|
return baseline + height - size.height - insets.bottom - edge;
|
|
case BOTTOM:
|
|
insets.bottom = edge + (insets.bottom - size.height) / 2;
|
|
return (insets.bottom < edge)
|
|
? baseline + height - size.height
|
|
: baseline + height - size.height + insets.bottom;
|
|
case BELOW_BOTTOM:
|
|
return baseline + height - size.height;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Returns an enum indicating how the baseline of the border
|
|
* changes as the size changes.
|
|
*
|
|
* @throws NullPointerException {@inheritDoc}
|
|
* @see javax.swing.JComponent#getBaseline(int, int)
|
|
* @since 1.6
|
|
*/
|
|
public Component.BaselineResizeBehavior getBaselineResizeBehavior(
|
|
Component c) {
|
|
super.getBaselineResizeBehavior(c);
|
|
switch (getPosition()) {
|
|
case TitledBorder.ABOVE_TOP:
|
|
case TitledBorder.TOP:
|
|
case TitledBorder.BELOW_TOP:
|
|
return Component.BaselineResizeBehavior.CONSTANT_ASCENT;
|
|
case TitledBorder.ABOVE_BOTTOM:
|
|
case TitledBorder.BOTTOM:
|
|
case TitledBorder.BELOW_BOTTOM:
|
|
return JComponent.BaselineResizeBehavior.CONSTANT_DESCENT;
|
|
}
|
|
return Component.BaselineResizeBehavior.OTHER;
|
|
}
|
|
|
|
private int getPosition() {
|
|
int position = getTitlePosition();
|
|
if (position != DEFAULT_POSITION) {
|
|
return position;
|
|
}
|
|
Object value = UIManager.get("TitledBorder.position");
|
|
if (value instanceof Integer) {
|
|
int i = (Integer) value;
|
|
if ((0 < i) && (i <= 6)) {
|
|
return i;
|
|
}
|
|
}
|
|
else if (value instanceof String) {
|
|
String s = (String) value;
|
|
if (s.equalsIgnoreCase("ABOVE_TOP")) {
|
|
return ABOVE_TOP;
|
|
}
|
|
if (s.equalsIgnoreCase("TOP")) {
|
|
return TOP;
|
|
}
|
|
if (s.equalsIgnoreCase("BELOW_TOP")) {
|
|
return BELOW_TOP;
|
|
}
|
|
if (s.equalsIgnoreCase("ABOVE_BOTTOM")) {
|
|
return ABOVE_BOTTOM;
|
|
}
|
|
if (s.equalsIgnoreCase("BOTTOM")) {
|
|
return BOTTOM;
|
|
}
|
|
if (s.equalsIgnoreCase("BELOW_BOTTOM")) {
|
|
return BELOW_BOTTOM;
|
|
}
|
|
}
|
|
return TOP;
|
|
}
|
|
|
|
private int getJustification(Component c) {
|
|
int justification = getTitleJustification();
|
|
if ((justification == LEADING) || (justification == DEFAULT_JUSTIFICATION)) {
|
|
return c.getComponentOrientation().isLeftToRight() ? LEFT : RIGHT;
|
|
}
|
|
if (justification == TRAILING) {
|
|
return c.getComponentOrientation().isLeftToRight() ? RIGHT : LEFT;
|
|
}
|
|
return justification;
|
|
}
|
|
|
|
protected Font getFont(Component c) {
|
|
Font font = getTitleFont();
|
|
if (font != null) {
|
|
return font;
|
|
}
|
|
if (c != null) {
|
|
font = c.getFont();
|
|
if (font != null) {
|
|
return font;
|
|
}
|
|
}
|
|
return new Font(Font.DIALOG, Font.PLAIN, 12);
|
|
}
|
|
|
|
private Color getColor(Component c) {
|
|
Color color = getTitleColor();
|
|
if (color != null) {
|
|
return color;
|
|
}
|
|
return (c != null)
|
|
? c.getForeground()
|
|
: null;
|
|
}
|
|
|
|
private JLabel getLabel(Component c) {
|
|
this.label.setText(getTitle());
|
|
this.label.setFont(getFont(c));
|
|
this.label.setForeground(getColor(c));
|
|
this.label.setComponentOrientation(c.getComponentOrientation());
|
|
this.label.setEnabled(c.isEnabled());
|
|
return this.label;
|
|
}
|
|
|
|
private static Insets getBorderInsets(Border border, Component c, Insets insets) {
|
|
if (border == null) {
|
|
insets.set(0, 0, 0, 0);
|
|
}
|
|
else if (border instanceof AbstractBorder) {
|
|
AbstractBorder ab = (AbstractBorder) border;
|
|
insets = ab.getBorderInsets(c, insets);
|
|
}
|
|
else {
|
|
Insets i = border.getBorderInsets(c);
|
|
insets.set(i.top, i.left, i.bottom, i.right);
|
|
}
|
|
return insets;
|
|
}
|
|
}
|