/* * @(#)DefaultPreviewPanel.java 1.13 03/12/19 * * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.swing.colorchooser; import javax.swing.*; import javax.swing.border.*; import javax.swing.event.*; import javax.swing.text.*; import java.awt.*; import java.awt.image.*; import java.awt.event.*; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.Serializable; import com.sun.java.swing.SwingUtilities2; /** * The standard preview panel for the color chooser. *
* 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 JavaBeansTM
* has been added to the java.beans
package.
* Please see {@link java.beans.XMLEncoder}.
*
* @version 1.13 12/19/03
* @author Steve Wilson
* @see JColorChooser
*/
class DefaultPreviewPanel extends JPanel {
private int squareSize = 25;
private int squareGap = 5;
private int innerGap = 5;
private int textGap = 5;
private Font font = new Font("Dialog", Font.PLAIN, 12);
private String sampleText = UIManager.getString("ColorChooser.sampleText");
private int swatchWidth = 50;
private Color oldColor = null;
private JColorChooser getColorChooser() {
return (JColorChooser)SwingUtilities.getAncestorOfClass(
JColorChooser.class, this);
}
public Dimension getPreferredSize() {
JComponent host = getColorChooser();
if (host == null) {
host = this;
}
FontMetrics fm = host.getFontMetrics(getFont());
int ascent = fm.getAscent();
int height = fm.getHeight();
int width = SwingUtilities2.stringWidth(host, fm, sampleText);
int y = height*3 + textGap*3;
int x = squareSize * 3 + squareGap*2 + swatchWidth + width + textGap*3;
return new Dimension( x,y );
}
public void paintComponent(Graphics g) {
if (oldColor == null)
oldColor = getForeground();
g.setColor(getBackground());
g.fillRect(0,0,getWidth(),getHeight());
if (this.getComponentOrientation().isLeftToRight()) {
int squareWidth = paintSquares(g, 0);
int textWidth = paintText(g, squareWidth);
paintSwatch(g, squareWidth + textWidth);
} else {
int swatchWidth = paintSwatch(g, 0);
int textWidth = paintText(g, swatchWidth);
paintSquares(g , swatchWidth + textWidth);
}
}
private int paintSwatch(Graphics g, int offsetX) {
int swatchX = offsetX;
g.setColor(oldColor);
g.fillRect(swatchX, 0, swatchWidth, (squareSize) + (squareGap/2));
g.setColor(getForeground());
g.fillRect(swatchX, (squareSize) + (squareGap/2), swatchWidth, (squareSize) + (squareGap/2) );
return (swatchX+swatchWidth);
}
private int paintText(Graphics g, int offsetX) {
g.setFont(getFont());
JComponent host = getColorChooser();
if (host == null) {
host = this;
}
FontMetrics fm = SwingUtilities2.getFontMetrics(host, g);
int ascent = fm.getAscent();
int height = fm.getHeight();
int width = SwingUtilities2.stringWidth(host, fm, sampleText);
int textXOffset = offsetX + textGap;
Color color = getForeground();
g.setColor(color);
SwingUtilities2.drawString(host, g, sampleText,textXOffset+(textGap/2),
ascent+2);
g.fillRect(textXOffset,
( height) + textGap,
width + (textGap),
height +2);
g.setColor(Color.black);
SwingUtilities2.drawString(host, g, sampleText,
textXOffset+(textGap/2),
height+ascent+textGap+2);
g.setColor(Color.white);
g.fillRect(textXOffset,
( height + textGap) * 2,
width + (textGap),
height +2);
g.setColor(color);
SwingUtilities2.drawString(host, g, sampleText,
textXOffset+(textGap/2),
((height+textGap) * 2)+ascent+2);
return width + textGap*3;
}
private int paintSquares(Graphics g, int offsetX) {
int squareXOffset = offsetX;
Color color = getForeground();
g.setColor(Color.white);
g.fillRect(squareXOffset,0,squareSize,squareSize);
g.setColor(color);
g.fillRect(squareXOffset+innerGap,
innerGap,
squareSize - (innerGap*2),
squareSize - (innerGap*2));
g.setColor(Color.white);
g.fillRect(squareXOffset+innerGap*2,
innerGap*2,
squareSize - (innerGap*4),
squareSize - (innerGap*4));
g.setColor(color);
g.fillRect(squareXOffset,squareSize+squareGap,squareSize,squareSize);
g.translate(squareSize+squareGap, 0);
g.setColor(Color.black);
g.fillRect(squareXOffset,0,squareSize,squareSize);
g.setColor(color);
g.fillRect(squareXOffset+innerGap,
innerGap,
squareSize - (innerGap*2),
squareSize - (innerGap*2));
g.setColor(Color.white);
g.fillRect(squareXOffset+innerGap*2,
innerGap*2,
squareSize - (innerGap*4),
squareSize - (innerGap*4));
g.translate(-(squareSize+squareGap), 0);
g.translate(squareSize+squareGap, squareSize+squareGap);
g.setColor(Color.white);
g.fillRect(squareXOffset,0,squareSize,squareSize);
g.setColor(color);
g.fillRect(squareXOffset+innerGap,
innerGap,
squareSize - (innerGap*2),
squareSize - (innerGap*2));
g.translate(-(squareSize+squareGap), -(squareSize+squareGap));
g.translate((squareSize+squareGap)*2, 0);
g.setColor(Color.white);
g.fillRect(squareXOffset,0,squareSize,squareSize);
g.setColor(color);
g.fillRect(squareXOffset+innerGap,
innerGap,
squareSize - (innerGap*2),
squareSize - (innerGap*2));
g.setColor(Color.black);
g.fillRect(squareXOffset+innerGap*2,
innerGap*2,
squareSize - (innerGap*4),
squareSize - (innerGap*4));
g.translate(-((squareSize+squareGap)*2), 0);
g.translate((squareSize+squareGap)*2, (squareSize+squareGap));
g.setColor(Color.black);
g.fillRect(squareXOffset,0,squareSize,squareSize);
g.setColor(color);
g.fillRect(squareXOffset+innerGap,
innerGap,
squareSize - (innerGap*2),
squareSize - (innerGap*2));
g.translate(-((squareSize+squareGap)*2), -(squareSize+squareGap));
return (squareSize*3+squareGap*2);
}
}