/*
* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
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 sun.swing.
SwingUtilities2;
/**
* The standard preview panel for the color chooser.
* <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™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @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(
Font.
DIALOG,
Font.
PLAIN, 12);
private
String 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,
getSampleText());
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,
getSampleText());
int
textXOffset =
offsetX +
textGap;
Color color =
getForeground();
g.
setColor(
color);
SwingUtilities2.
drawString(
host,
g,
getSampleText(),
textXOffset+(
textGap/2),
ascent+2);
g.
fillRect(
textXOffset,
(
height) +
textGap,
width + (
textGap),
height +2);
g.
setColor(
Color.
black);
SwingUtilities2.
drawString(
host,
g,
getSampleText(),
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,
getSampleText(),
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);
}
private
String getSampleText() {
if (this.
sampleText == null) {
this.
sampleText =
UIManager.
getString("ColorChooser.sampleText",
getLocale());
}
return this.
sampleText;
}
}