/*
* Copyright (c) 2009 Kathryn Huxtable and Kenneth Orr.
*
* This file is part of the SeaGlass Pluggable Look and Feel.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* $Id: SeaGlassLabelUI.java 1595 2011-08-09 20:33:48Z rosstauscher@gmx.de $
*/
package com.seaglasslookandfeel.ui;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Rectangle;
import java.beans.PropertyChangeEvent;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicHTML;
import javax.swing.plaf.basic.BasicLabelUI;
import javax.swing.plaf.synth.ColorType;
import javax.swing.plaf.synth.SynthConstants;
import javax.swing.plaf.synth.SynthContext;
import javax.swing.text.View;
import com.seaglasslookandfeel.SeaGlassContext;
import com.seaglasslookandfeel.SeaGlassLookAndFeel;
import com.seaglasslookandfeel.SeaGlassStyle;
/**
* SeaGlassLabelUI.
*
* Based on SynthLabelUI by Scott Violet.
*
* @see javax.swing.plaf.synth.SynthLabelUI
*/
public class SeaGlassLabelUI extends BasicLabelUI implements SeaglassUI {
private SeaGlassStyle style;
/**
* Returns the LabelUI implementation used for the skins look and feel.
*/
public static ComponentUI createUI(JComponent c) {
return new SeaGlassLabelUI();
}
protected void installDefaults(JLabel c) {
updateStyle(c);
}
void updateStyle(JLabel c) {
SeaGlassContext context = getContext(c, ENABLED);
style = (SeaGlassStyle) SeaGlassLookAndFeel.updateStyle(context, this);
context.dispose();
}
protected void uninstallDefaults(JLabel c) {
SeaGlassContext context = getContext(c, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
}
public SeaGlassContext getContext(JComponent c) {
return getContext(c, getComponentState(c));
}
private SeaGlassContext getContext(JComponent c, int state) {
return SeaGlassContext.getContext(SeaGlassContext.class, c, SeaGlassLookAndFeel.getRegion(c), style, state);
}
private int getComponentState(JComponent c) {
int state = SeaGlassLookAndFeel.getComponentState(c);
if (SeaGlassLookAndFeel.selectedUI == this && state == SynthConstants.ENABLED) {
state = SeaGlassLookAndFeel.selectedUIState | SynthConstants.ENABLED;
}
return state;
}
public int getBaseline(JComponent c, int width, int height) {
if (c == null) {
throw new NullPointerException("Component must be non-null");
}
if (width < 0 || height < 0) {
throw new IllegalArgumentException("Width and height must be >= 0");
}
JLabel label = (JLabel) c;
String text = label.getText();
if (text == null || "".equals(text)) {
return -1;
}
Insets i = label.getInsets();
Rectangle viewRect = new Rectangle();
Rectangle textRect = new Rectangle();
Rectangle iconRect = new Rectangle();
viewRect.x = i.left;
viewRect.y = i.top;
viewRect.width = width - (i.right + viewRect.x);
viewRect.height = height - (i.bottom + viewRect.y);
// layout the text and icon
SeaGlassContext context = getContext(label);
FontMetrics fm = context.getComponent().getFontMetrics(context.getStyle().getFont(context));
context.getStyle().getGraphicsUtils(context).layoutText(context, fm, label.getText(), label.getIcon(),
label.getHorizontalAlignment(), label.getVerticalAlignment(), label.getHorizontalTextPosition(),
label.getVerticalTextPosition(), viewRect, iconRect, textRect, label.getIconTextGap());
View view = (View) label.getClientProperty(BasicHTML.propertyKey);
int baseline;
if (view != null) {
baseline = BasicHTML.getHTMLBaseline(view, textRect.width, textRect.height);
if (baseline >= 0) {
baseline += textRect.y;
}
} else {
baseline = textRect.y + fm.getAscent();
}
context.dispose();
return baseline;
}
/**
* Notifies this UI delegate that it's time to paint the specified
* component. This method is invoked by <code>JComponent</code> when the
* specified component is being painted.
*/
public void update(Graphics g, JComponent c) {
SeaGlassContext context = getContext(c);
SeaGlassLookAndFeel.update(context, g);
context.getPainter().paintLabelBackground(context, g, 0, 0, c.getWidth(), c.getHeight());
paint(context, g);
context.dispose();
}
public void paint(Graphics g, JComponent c) {
SeaGlassContext context = getContext(c);
paint(context, g);
context.dispose();
}
protected void paint(SeaGlassContext context, Graphics g) {
JLabel label = (JLabel) context.getComponent();
Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();
g.setColor(context.getStyle().getColor(context, ColorType.TEXT_FOREGROUND));
g.setFont(style.getFont(context));
context.getStyle().getGraphicsUtils(context).paintText(context, g, label.getText(), icon, label.getHorizontalAlignment(),
label.getVerticalAlignment(), label.getHorizontalTextPosition(), label.getVerticalTextPosition(),
label.getIconTextGap(), label.getDisplayedMnemonicIndex(), 0);
}
public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h) {
((SeaGlassContext) context).getPainter().paintLabelBorder(context, g, x, y, w, h);
}
public Dimension getPreferredSize(JComponent c) {
JLabel label = (JLabel) c;
Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();
SeaGlassContext context = getContext(c);
Dimension size = context.getStyle().getGraphicsUtils(context).getPreferredSize(context,
context.getStyle().getFont(context), label.getText(), icon, label.getHorizontalAlignment(),
label.getVerticalAlignment(), label.getHorizontalTextPosition(), label.getVerticalTextPosition(),
label.getIconTextGap(), label.getDisplayedMnemonicIndex());
context.dispose();
return size;
}
public Dimension getMinimumSize(JComponent c) {
JLabel label = (JLabel) c;
Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();
SeaGlassContext context = getContext(c);
Dimension size = context.getStyle().getGraphicsUtils(context).getMinimumSize(context, context.getStyle().getFont(context),
label.getText(), icon, label.getHorizontalAlignment(), label.getVerticalAlignment(), label.getHorizontalTextPosition(),
label.getVerticalTextPosition(), label.getIconTextGap(), label.getDisplayedMnemonicIndex());
context.dispose();
return size;
}
public Dimension getMaximumSize(JComponent c) {
JLabel label = (JLabel) c;
Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();
SeaGlassContext context = getContext(c);
Dimension size = context.getStyle().getGraphicsUtils(context).getMaximumSize(context, context.getStyle().getFont(context),
label.getText(), icon, label.getHorizontalAlignment(), label.getVerticalAlignment(), label.getHorizontalTextPosition(),
label.getVerticalTextPosition(), label.getIconTextGap(), label.getDisplayedMnemonicIndex());
context.dispose();
return size;
}
public void propertyChange(PropertyChangeEvent e) {
super.propertyChange(e);
if (SeaGlassLookAndFeel.shouldUpdateStyle(e)) {
updateStyle((JLabel) e.getSource());
}
}
}