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+/* BasicRadioButtonUI.java
+ Copyright (C) 2002, 2004, 2006, Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing.plaf.basic;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.Insets;
+import java.awt.Rectangle;
+
+import javax.swing.AbstractButton;
+import javax.swing.ButtonModel;
+import javax.swing.Icon;
+import javax.swing.JComponent;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.text.View;
+
+/**
+ * The BasicLookAndFeel UI implementation for
+ * {@link javax.swing.JRadioButton}s.
+ */
+public class BasicRadioButtonUI extends BasicToggleButtonUI
+{
+ /**
+ * The default icon for JRadioButtons. The default icon displays the usual
+ * RadioButton and is sensible to the selection state of the button,
+ * and can be used both as normal icon as well as selectedIcon.
+ */
+ protected Icon icon;
+
+ /**
+ * Creates and returns a new instance of <code>BasicRadioButtonUI</code>.
+ *
+ * @return a new instance of <code>BasicRadioButtonUI</code>
+ */
+ public static ComponentUI createUI(final JComponent c)
+ {
+ return new BasicRadioButtonUI();
+ }
+
+ /**
+ * Creates a new instance of <code>BasicButtonUI</code>.
+ */
+ public BasicRadioButtonUI()
+ {
+ // nothing to do
+ }
+
+ /**
+ * Installs defaults from the Look &amp; Feel table on the specified
+ * button.
+ *
+ * @param b the button on which to install the defaults
+ */
+ protected void installDefaults(AbstractButton b)
+ {
+ super.installDefaults(b);
+ icon = UIManager.getIcon(getPropertyPrefix() + "icon");
+ }
+
+ /**
+ * Returns the prefix used for UIDefaults properties. This is
+ * <code>RadioButton</code> in this case.
+ *
+ * @return the prefix used for UIDefaults properties
+ */
+ protected String getPropertyPrefix()
+ {
+ return "RadioButton.";
+ }
+
+ /**
+ * Returns the default icon for JRadioButtons.
+ * The default icon displays the usual
+ * RadioButton and is sensible to the selection state of the button,
+ * and can be used both as normal icon as well as selectedIcon.
+ *
+ * @return the default icon for JRadioButtons
+ */
+ public Icon getDefaultIcon()
+ {
+ return icon;
+ }
+
+ /**
+ * Paints the RadioButton.
+ *
+ * @param g the Graphics context to paint with
+ * @param c the button to paint
+ */
+ public void paint(Graphics g, JComponent c)
+ {
+ AbstractButton b = (AbstractButton) c;
+ Dimension size = c.getSize();
+ Insets i = b.getInsets();
+ textR.x = 0;
+ textR.y = 0;
+ textR.width = 0;
+ textR.height = 0;
+ iconR.x = 0;
+ iconR.y = 0;
+ iconR.width = 0;
+ iconR.height = 0;
+ viewR.x = i.left;
+ viewR.y = i.right;
+ viewR.width = size.width - i.left - i.right;
+ viewR.height = size.height - i.top - i.bottom;
+
+ Font f = c.getFont();
+
+ g.setFont(f);
+
+ // This is the icon that we use for layout.
+ Icon icon = b.getIcon();
+ if (icon == null)
+ icon = getDefaultIcon();
+
+ // Figure out the correct icon.
+ Icon currentIcon = getCurrentIcon(b);
+
+ // Do the layout.
+ String text = SwingUtilities.layoutCompoundLabel(c, g.getFontMetrics(f),
+ b.getText(), currentIcon == null ? getDefaultIcon() : currentIcon,
+ b.getVerticalAlignment(), b.getHorizontalAlignment(),
+ b.getVerticalTextPosition(), b.getHorizontalTextPosition(),
+ viewR, iconR, textR, b.getIconTextGap());
+
+ // .. and paint it.
+ if (currentIcon != null)
+ currentIcon.paintIcon(c, g, iconR.x, iconR.y);
+
+ // Paint text and focus indicator.
+ if (text != null)
+ {
+ // Maybe render HTML in the radio button.
+ View v = (View) c.getClientProperty(BasicHTML.propertyKey);
+ if (v != null)
+ v.paint(g, textR);
+ else
+ paintText(g, b, textR, text);
+
+ // Paint focus indicator if necessary.
+ if (b.hasFocus() && b.isFocusPainted()
+ && textR.width > 0 && textR.height > 0)
+ paintFocus(g, textR, size);
+ }
+ }
+
+ /**
+ * Determines the icon to be displayed for the specified radio button.
+ *
+ * @param b the radio button
+ *
+ * @return the icon
+ */
+ private Icon getCurrentIcon(AbstractButton b)
+ {
+ ButtonModel m = b.getModel();
+ Icon currentIcon = b.getIcon();
+
+ if (currentIcon == null)
+ {
+ currentIcon = getDefaultIcon();
+ }
+ else
+ {
+ if (! m.isEnabled())
+ {
+ if (m.isSelected())
+ currentIcon = b.getDisabledSelectedIcon();
+ else
+ currentIcon = b.getDisabledIcon();
+ }
+ else if (m.isPressed() && m.isArmed())
+ {
+ currentIcon = b.getPressedIcon();
+ if (currentIcon == null)
+ currentIcon = b.getSelectedIcon();
+ }
+ else if (m.isSelected())
+ {
+ if (b.isRolloverEnabled() && m.isRollover())
+ {
+ currentIcon = b.getRolloverSelectedIcon();
+ if (currentIcon == null)
+ currentIcon = b.getSelectedIcon();
+ }
+ else
+ currentIcon = b.getSelectedIcon();
+ }
+ else if (b.isRolloverEnabled() && m.isRollover())
+ {
+ currentIcon = b.getRolloverIcon();
+ }
+ if (currentIcon == null)
+ currentIcon = b.getIcon();
+ }
+ return currentIcon;
+ }
+
+ public Dimension getPreferredSize(JComponent c)
+ {
+ // This is basically the same code as in
+ // BasicGraphicsUtils.getPreferredButtonSize() but takes the default icon
+ // property into account. JRadioButton and subclasses always have an icon:
+ // the check box. If the user explicitly changes it with setIcon() that
+ // one will be used for layout calculations and painting instead.
+ // The other icon properties are ignored.
+ AbstractButton b = (AbstractButton) c;
+
+ Insets insets = b.getInsets();
+
+ String text = b.getText();
+ Icon i = b.getIcon();
+ if (i == null)
+ i = getDefaultIcon();
+
+ textR.x = 0;
+ textR.y = 0;
+ textR.width = 0;
+ textR.height = 0;
+ iconR.x = 0;
+ iconR.y = 0;
+ iconR.width = 0;
+ iconR.height = 0;
+ viewR.x = 0;
+ viewR.y = 0;
+ viewR.width = Short.MAX_VALUE;
+ viewR.height = Short.MAX_VALUE;
+
+ SwingUtilities.layoutCompoundLabel(b, // for the component orientation
+ b.getFontMetrics(b.getFont()),
+ text, i, b.getVerticalAlignment(),
+ b.getHorizontalAlignment(),
+ b.getVerticalTextPosition(),
+ b.getHorizontalTextPosition(),
+ viewR, iconR, textR,
+ text == null ? 0 : b.getIconTextGap());
+
+ Rectangle r = SwingUtilities.computeUnion(textR.x, textR.y, textR.width,
+ textR.height, iconR);
+
+ return new Dimension(insets.left + r.width + insets.right,
+ insets.top + r.height + insets.bottom);
+ }
+
+ /**
+ * Paints the focus indicator for JRadioButtons.
+ *
+ * @param g the graphics context
+ * @param tr the rectangle for the text label
+ * @param size the size of the <code>JRadioButton</code> component.
+ */
+ protected void paintFocus(Graphics g, Rectangle tr, Dimension size)
+ {
+ Color focusColor = UIManager.getColor(getPropertyPrefix() + ".focus");
+ Color saved = g.getColor();
+ g.setColor(focusColor);
+ g.drawRect(tr.x, tr.y, tr.width, tr.height);
+ g.setColor(saved);
+ }
+}