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package com.explodingpixels.macwidgets.plaf;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.plaf.basic.BasicGraphicsUtils;
import javax.swing.plaf.basic.BasicLabelUI;
import com.explodingpixels.macwidgets.MacFontUtils;
import com.explodingpixels.widgets.WindowUtils;
/**
* <p>
* A {@link BasicLabelUI} that paints a shadow under the text using the given shadow color, which
* helps emphasize the text. The UI delegate also provides a facility for drawing a different shadow
* color when the corresponding label's containing {@link java.awt.Window} is unfocused.
* </p>
* While this UI delegate can be directly installed on existing {@code JLabel}s, it is
* recommended that you use the
* {@link com.explodingpixels.macwidgets.MacWidgetFactory#createEmphasizedLabel(String)} or
* {@link com.explodingpixels.macwidgets.MacWidgetFactory#makeEmphasizedLabel(JLabel, Color, Color, Color)}
* factory methods.
* <p>
* Here's a close-up of an emphasized label:
* <br>
* <img src="../../../../../graphics/EmphasizedLabelUI.png">
* </p>
*/
public class EmphasizedLabelUI extends BasicLabelUI {
private Color fShadowColor;
private Color fFocusedTextColor;
private Color fUnfocusedTextColor;
public static final Color DEFAULT_EMPHASIS_COLOR = new Color(255, 255, 255, 110);
public static final Color DEFAULT_FOCUSED_FONT_COLOR = new Color(0x000000);
public static final Color DEFAULT_UNFOCUSED_FONT_COLOR = new Color(0x3f3f3f);
public static final Color DEFAULT_DISABLED_FONT_COLOR = new Color(0x3f3f3f);
/**
* Creates an {@code EmphasizedLabelUI} using the default colors.
*/
public EmphasizedLabelUI() {
this(DEFAULT_FOCUSED_FONT_COLOR, DEFAULT_UNFOCUSED_FONT_COLOR,
DEFAULT_EMPHASIS_COLOR);
}
/**
* Creates an {@code EmphasizedLabelUI} using the given colors.
*
* @param focusedTextColor the color to draw the text with when the parent
* {@link java.awt.Window} has focus.
* @param unfocusedTextColor the color to draw the text with when the parent
* {@link java.awt.Window} does not have focus.
* @param emphasisColor the color to draw the emphasis text with.
*/
public EmphasizedLabelUI(Color focusedTextColor, Color unfocusedTextColor, Color emphasisColor) {
fFocusedTextColor = focusedTextColor;
fUnfocusedTextColor = unfocusedTextColor;
fShadowColor = emphasisColor;
}
@Override
public void installUI(JComponent c) {
super.installUI(c);
c.setOpaque(false);
}
@Override
public void uninstallUI(JComponent c) {
super.uninstallUI(c);
// TODO add uninstallation.
}
@Override
protected void paintEnabledText(JLabel label, Graphics g, String s,
int textX, int textY) {
MacFontUtils.enableAntialiasing((Graphics2D) g);
g.setColor(fShadowColor);
g.setFont(label.getFont());
BasicGraphicsUtils.drawStringUnderlineCharAt(g, s, -1, textX, textY + 1);
g.setColor(WindowUtils.isParentWindowFocused(label)
? fFocusedTextColor : fUnfocusedTextColor);
BasicGraphicsUtils.drawStringUnderlineCharAt(g, s, -1, textX, textY);
}
@Override
protected void paintDisabledText(JLabel label, Graphics g, String s, int textX, int textY) {
// TODO do use a diabled color here.
MacFontUtils.enableAntialiasing((Graphics2D) g);
g.setColor(fShadowColor);
g.setFont(label.getFont());
BasicGraphicsUtils.drawStringUnderlineCharAt(g, s, -1, textX, textY + 1);
g.setColor(DEFAULT_DISABLED_FONT_COLOR);
BasicGraphicsUtils.drawStringUnderlineCharAt(g, s, -1, textX, textY);
}
}
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