jdk/src/share/classes/javax/swing/plaf/synth/SynthLabelUI.java - platform/libcore - Gitiles

 /*
  * Copyright 2002-2005 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */

 package javax.swing.plaf.synth;

 import javax.swing.*;
 import javax.swing.plaf.*;
 import javax.swing.plaf.basic.*;
 import javax.swing.text.View;

 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Rectangle;
 import java.awt.Insets;
 import java.awt.Color;
 import java.awt.Graphics;
 import java.awt.Font;
 import java.awt.FontMetrics;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import sun.swing.plaf.synth.SynthUI;

 /**
  * Synth's LabelUI.
  *
  * @author Scott Violet
  */
 class SynthLabelUI extends BasicLabelUI implements SynthUI {
     private SynthStyle style;

     /**
      * Returns the LabelUI implementation used for the skins look and feel.
      */
     public static ComponentUI createUI(JComponent c){
         return new SynthLabelUI();
     }


     protected void installDefaults(JLabel c) {
         updateStyle(c);
     }

     void updateStyle(JLabel c) {
         SynthContext context = getContext(c, ENABLED);
         style = SynthLookAndFeel.updateStyle(context, this);
         context.dispose();
     }

     protected void uninstallDefaults(JLabel c){
         SynthContext context = getContext(c, ENABLED);

         style.uninstallDefaults(context);
         context.dispose();
         style = null;
     }

     public SynthContext getContext(JComponent c) {
         return getContext(c, getComponentState(c));
     }

     private SynthContext getContext(JComponent c, int state) {
         return SynthContext.getContext(SynthContext.class, c,
                     SynthLookAndFeel.getRegion(c), style, state);
     }

     private Region getRegion(JComponent c) {
         return SynthLookAndFeel.getRegion(c);
     }

     private int getComponentState(JComponent c) {
         int state = SynthLookAndFeel.getComponentState(c);
         if (SynthLookAndFeel.selectedUI == this &&
                         state == SynthConstants.ENABLED) {
             state = SynthLookAndFeel.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
         SynthContext 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) {
         SynthContext context = getContext(c);

         SynthLookAndFeel.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) {
         SynthContext context = getContext(c);

         paint(context, g);
         context.dispose();
     }

     protected void paint(SynthContext 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) {
         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();
         SynthContext 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();
         SynthContext 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();
         SynthContext 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 (SynthLookAndFeel.shouldUpdateStyle(e)) {
             updateStyle((JLabel)e.getSource());
         }
     }
 }
	/*
	* Copyright 2002-2005 Sun Microsystems, Inc. All Rights Reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Sun designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Sun in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	* CA 95054 USA or visit www.sun.com if you need additional information or
	* have any questions.
	*/

	package javax.swing.plaf.synth;

	import javax.swing.*;
	import javax.swing.plaf.*;
	import javax.swing.plaf.basic.*;
	import javax.swing.text.View;

	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.Component;
	import java.awt.Container;
	import java.awt.Dimension;
	import java.awt.Rectangle;
	import java.awt.Insets;
	import java.awt.Color;
	import java.awt.Graphics;
	import java.awt.Font;
	import java.awt.FontMetrics;
	import java.beans.PropertyChangeEvent;
	import java.beans.PropertyChangeListener;
	import sun.swing.plaf.synth.SynthUI;

	/**
	* Synth's LabelUI.
	*
	* @author Scott Violet
	*/
	class SynthLabelUI extends BasicLabelUI implements SynthUI {
	private SynthStyle style;

	/**
	* Returns the LabelUI implementation used for the skins look and feel.
	*/
	public static ComponentUI createUI(JComponent c){
	return new SynthLabelUI();
	}


	protected void installDefaults(JLabel c) {
	updateStyle(c);
	}

	void updateStyle(JLabel c) {
	SynthContext context = getContext(c, ENABLED);
	style = SynthLookAndFeel.updateStyle(context, this);
	context.dispose();
	}

	protected void uninstallDefaults(JLabel c){
	SynthContext context = getContext(c, ENABLED);

	style.uninstallDefaults(context);
	context.dispose();
	style = null;
	}

	public SynthContext getContext(JComponent c) {
	return getContext(c, getComponentState(c));
	}

	private SynthContext getContext(JComponent c, int state) {
	return SynthContext.getContext(SynthContext.class, c,
	SynthLookAndFeel.getRegion(c), style, state);
	}

	private Region getRegion(JComponent c) {
	return SynthLookAndFeel.getRegion(c);
	}

	private int getComponentState(JComponent c) {
	int state = SynthLookAndFeel.getComponentState(c);
	if (SynthLookAndFeel.selectedUI == this &&
	state == SynthConstants.ENABLED) {
	state = SynthLookAndFeel.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
	SynthContext 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) {
	SynthContext context = getContext(c);

	SynthLookAndFeel.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) {
	SynthContext context = getContext(c);

	paint(context, g);
	context.dispose();
	}

	protected void paint(SynthContext 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) {
	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();
	SynthContext 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();
	SynthContext 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();
	SynthContext 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 (SynthLookAndFeel.shouldUpdateStyle(e)) {
	updateStyle((JLabel)e.getSource());
	}
	}
	}