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package javax.swing.border;

import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Component;
import java.awt.Color;

import javax.swing.Icon;

A class which provides a matte-like border of either a solid color or a tiled icon.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see XMLEncoder.

Author:Amy Fowler
/** * A class which provides a matte-like border of either a solid color * or a tiled icon. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans&trade; * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author Amy Fowler */
@SuppressWarnings("serial") public class MatteBorder extends EmptyBorder { protected Color color; protected Icon tileIcon;
Creates a matte border with the specified insets and color.
Params:
  • top – the top inset of the border
  • left – the left inset of the border
  • bottom – the bottom inset of the border
  • right – the right inset of the border
  • matteColor – the color rendered for the border
/** * Creates a matte border with the specified insets and color. * @param top the top inset of the border * @param left the left inset of the border * @param bottom the bottom inset of the border * @param right the right inset of the border * @param matteColor the color rendered for the border */
public MatteBorder(int top, int left, int bottom, int right, Color matteColor) { super(top, left, bottom, right); this.color = matteColor; }
Creates a matte border with the specified insets and color.
Params:
  • borderInsets – the insets of the border
  • matteColor – the color rendered for the border
Since:1.3
/** * Creates a matte border with the specified insets and color. * @param borderInsets the insets of the border * @param matteColor the color rendered for the border * @since 1.3 */
public MatteBorder(Insets borderInsets, Color matteColor) { super(borderInsets); this.color = matteColor; }
Creates a matte border with the specified insets and tile icon.
Params:
  • top – the top inset of the border
  • left – the left inset of the border
  • bottom – the bottom inset of the border
  • right – the right inset of the border
  • tileIcon – the icon to be used for tiling the border
/** * Creates a matte border with the specified insets and tile icon. * @param top the top inset of the border * @param left the left inset of the border * @param bottom the bottom inset of the border * @param right the right inset of the border * @param tileIcon the icon to be used for tiling the border */
public MatteBorder(int top, int left, int bottom, int right, Icon tileIcon) { super(top, left, bottom, right); this.tileIcon = tileIcon; }
Creates a matte border with the specified insets and tile icon.
Params:
  • borderInsets – the insets of the border
  • tileIcon – the icon to be used for tiling the border
Since:1.3
/** * Creates a matte border with the specified insets and tile icon. * @param borderInsets the insets of the border * @param tileIcon the icon to be used for tiling the border * @since 1.3 */
public MatteBorder(Insets borderInsets, Icon tileIcon) { super(borderInsets); this.tileIcon = tileIcon; }
Creates a matte border with the specified tile icon. The insets will be calculated dynamically based on the size of the tile icon, where the top and bottom will be equal to the tile icon's height, and the left and right will be equal to the tile icon's width.
Params:
  • tileIcon – the icon to be used for tiling the border
/** * Creates a matte border with the specified tile icon. The * insets will be calculated dynamically based on the size of * the tile icon, where the top and bottom will be equal to the * tile icon's height, and the left and right will be equal to * the tile icon's width. * @param tileIcon the icon to be used for tiling the border */
public MatteBorder(Icon tileIcon) { this(-1,-1,-1,-1, tileIcon); }
Paints the matte border.
/** * Paints the matte border. */
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) { Insets insets = getBorderInsets(c); Color oldColor = g.getColor(); g.translate(x, y); // If the tileIcon failed loading, paint as gray. if (tileIcon != null) { color = (tileIcon.getIconWidth() == -1) ? Color.gray : null; } if (color != null) { g.setColor(color); g.fillRect(0, 0, width - insets.right, insets.top); g.fillRect(0, insets.top, insets.left, height - insets.top); g.fillRect(insets.left, height - insets.bottom, width - insets.left, insets.bottom); g.fillRect(width - insets.right, 0, insets.right, height - insets.bottom); } else if (tileIcon != null) { int tileW = tileIcon.getIconWidth(); int tileH = tileIcon.getIconHeight(); paintEdge(c, g, 0, 0, width - insets.right, insets.top, tileW, tileH); paintEdge(c, g, 0, insets.top, insets.left, height - insets.top, tileW, tileH); paintEdge(c, g, insets.left, height - insets.bottom, width - insets.left, insets.bottom, tileW, tileH); paintEdge(c, g, width - insets.right, 0, insets.right, height - insets.bottom, tileW, tileH); } g.translate(-x, -y); g.setColor(oldColor); } private void paintEdge(Component c, Graphics g, int x, int y, int width, int height, int tileW, int tileH) { g = g.create(x, y, width, height); int sY = -(y % tileH); for (x = -(x % tileW); x < width; x += tileW) { for (y = sY; y < height; y += tileH) { this.tileIcon.paintIcon(c, g, x, y); } } g.dispose(); }
Reinitialize the insets parameter with this Border's current Insets.
Params:
  • c – the component for which this border insets value applies
  • insets – the object to be reinitialized
Since:1.3
/** * Reinitialize the insets parameter with this Border's current Insets. * @param c the component for which this border insets value applies * @param insets the object to be reinitialized * @since 1.3 */
public Insets getBorderInsets(Component c, Insets insets) { return computeInsets(insets); }
Returns the insets of the border.
Since:1.3
/** * Returns the insets of the border. * @since 1.3 */
public Insets getBorderInsets() { return computeInsets(new Insets(0,0,0,0)); } /* should be protected once api changes area allowed */ private Insets computeInsets(Insets insets) { if (tileIcon != null && top == -1 && bottom == -1 && left == -1 && right == -1) { int w = tileIcon.getIconWidth(); int h = tileIcon.getIconHeight(); insets.top = h; insets.right = w; insets.bottom = h; insets.left = w; } else { insets.left = left; insets.top = top; insets.right = right; insets.bottom = bottom; } return insets; }
Returns the color used for tiling the border or null if a tile icon is being used.
Since:1.3
/** * Returns the color used for tiling the border or null * if a tile icon is being used. * @since 1.3 */
public Color getMatteColor() { return color; }
Returns the icon used for tiling the border or null if a solid color is being used.
Since:1.3
/** * Returns the icon used for tiling the border or null * if a solid color is being used. * @since 1.3 */
public Icon getTileIcon() { return tileIcon; }
Returns whether or not the border is opaque.
/** * Returns whether or not the border is opaque. */
public boolean isBorderOpaque() { // If a tileIcon is set, then it may contain transparent bits return color != null; } }