| /* MetalButtonUI.java |
| Copyright (C) 2005 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.metal; |
| |
| import java.awt.Color; |
| import java.awt.Component; |
| import java.awt.Font; |
| import java.awt.FontMetrics; |
| import java.awt.Graphics; |
| import java.awt.Rectangle; |
| |
| import javax.swing.AbstractButton; |
| import javax.swing.ButtonModel; |
| import javax.swing.JButton; |
| import javax.swing.JComponent; |
| import javax.swing.JToolBar; |
| import javax.swing.SwingConstants; |
| import javax.swing.UIManager; |
| import javax.swing.plaf.ComponentUI; |
| import javax.swing.plaf.UIResource; |
| import javax.swing.plaf.basic.BasicButtonListener; |
| import javax.swing.plaf.basic.BasicButtonUI; |
| |
| /** |
| * A UI delegate for the {@link JButton} component. |
| * |
| * @author Roman Kennke (roman@kennke.org) |
| */ |
| public class MetalButtonUI |
| extends BasicButtonUI |
| { |
| |
| /** The color used to draw the focus rectangle around the text and/or icon. */ |
| protected Color focusColor; |
| |
| /** The background color for the button when it is pressed. */ |
| protected Color selectColor; |
| |
| /** The color for disabled button labels. */ |
| protected Color disabledTextColor; |
| |
| /** |
| * Creates a new instance. |
| */ |
| public MetalButtonUI() |
| { |
| super(); |
| focusColor = UIManager.getColor(getPropertyPrefix() + "focus"); |
| selectColor = UIManager.getColor(getPropertyPrefix() + "select"); |
| disabledTextColor = UIManager.getColor(getPropertyPrefix() + "disabledText"); |
| } |
| |
| /** |
| * Returns the color for the focus border. |
| * |
| * @return the color for the focus border |
| */ |
| protected Color getFocusColor() |
| { |
| return focusColor; |
| } |
| |
| /** |
| * Returns the color that indicates a selected button. |
| * |
| * @return the color that indicates a selected button |
| */ |
| protected Color getSelectColor() |
| { |
| return selectColor; |
| } |
| |
| /** |
| * Returns the color for the text label of disabled buttons. |
| * |
| * @return the color for the text label of disabled buttons |
| */ |
| protected Color getDisabledTextColor() |
| { |
| return disabledTextColor; |
| } |
| |
| /** |
| * Returns a UI delegate for the specified component. |
| * |
| * @param c the component (should be a subclass of {@link AbstractButton}). |
| * |
| * @return A new instance of <code>MetalButtonUI</code>. |
| */ |
| public static ComponentUI createUI(JComponent c) |
| { |
| return new MetalButtonUI(); |
| } |
| |
| /** |
| * Installs the default settings for the specified button. |
| * |
| * @param button the button. |
| * |
| * @see #uninstallDefaults(AbstractButton) |
| */ |
| public void installDefaults(AbstractButton button) |
| { |
| super.installDefaults(button); |
| button.setRolloverEnabled(UIManager.getBoolean( |
| getPropertyPrefix() + "rollover")); |
| } |
| |
| /** |
| * Removes the defaults added by {@link #installDefaults(AbstractButton)}. |
| */ |
| public void uninstallDefaults(AbstractButton button) |
| { |
| super.uninstallDefaults(button); |
| button.setRolloverEnabled(false); |
| } |
| |
| /** |
| * Returns a button listener for the specified button. |
| * |
| * @param button the button. |
| * |
| * @return A button listener. |
| */ |
| protected BasicButtonListener createButtonListener(AbstractButton button) |
| { |
| return new MetalButtonListener(button); |
| } |
| |
| /** |
| * Paints the background of the button to indicate that it is in the |
| * "pressed" state. |
| * |
| * @param g the graphics context. |
| * @param b the button. |
| */ |
| protected void paintButtonPressed(Graphics g, AbstractButton b) |
| { |
| if (b.isContentAreaFilled()) |
| { |
| Rectangle area = b.getVisibleRect(); |
| g.setColor(selectColor); |
| g.fillRect(area.x, area.y, area.width, area.height); |
| } |
| } |
| |
| /** |
| * Paints the focus rectangle around the button text and/or icon. |
| * |
| * @param g the graphics context. |
| * @param b the button. |
| * @param viewRect the button bounds. |
| * @param textRect the text bounds. |
| * @param iconRect the icon bounds. |
| */ |
| protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, |
| Rectangle textRect, Rectangle iconRect) |
| { |
| if (b.isEnabled() && b.hasFocus() && b.isFocusPainted()) |
| { |
| Color savedColor = g.getColor(); |
| g.setColor(getFocusColor()); |
| Rectangle focusRect = iconRect.union(textRect); |
| g.drawRect(focusRect.x - 1, focusRect.y, |
| focusRect.width + 1, focusRect.height); |
| g.setColor(savedColor); |
| } |
| } |
| |
| /** |
| * Paints the button text. |
| * |
| * @param g the graphics context. |
| * @param c the button. |
| * @param textRect the text bounds. |
| * @param text the text to display. |
| */ |
| protected void paintText(Graphics g, JComponent c, Rectangle textRect, |
| String text) |
| { |
| AbstractButton b = (AbstractButton) c; |
| Font f = b.getFont(); |
| g.setFont(f); |
| FontMetrics fm = g.getFontMetrics(f); |
| |
| if (b.isEnabled()) |
| { |
| g.setColor(b.getForeground()); |
| g.drawString(text, textRect.x, textRect.y + fm.getAscent()); |
| } |
| else |
| { |
| g.setColor(getDisabledTextColor()); |
| g.drawString(text, textRect.x, textRect.y + fm.getAscent()); |
| } |
| } |
| |
| /** |
| * If the property <code>Button.gradient</code> is set, then a gradient is |
| * painted as background, otherwise the normal superclass behaviour is |
| * called. |
| */ |
| public void update(Graphics g, JComponent c) |
| { |
| AbstractButton b = (AbstractButton) c; |
| if ((b.getBackground() instanceof UIResource) |
| && b.isContentAreaFilled() && b.isEnabled()) |
| { |
| ButtonModel m = b.getModel(); |
| String uiKey = "Button.gradient"; |
| if (! isToolbarButton(b)) |
| { |
| if (! m.isArmed() && ! m.isPressed() && isDrawingGradient(uiKey)) |
| { |
| MetalUtils.paintGradient(g, 0, 0, b.getWidth(), b.getHeight(), |
| SwingConstants.VERTICAL, |
| uiKey); |
| paint(g, c); |
| return; |
| } |
| } |
| else if (m.isRollover() && isDrawingGradient(uiKey)) |
| { |
| MetalUtils.paintGradient(g, 0, 0, b.getWidth(), b.getHeight(), |
| SwingConstants.VERTICAL, |
| uiKey); |
| paint(g, c); |
| return; |
| } |
| } |
| // Fallback if we didn't have any of the two above cases. |
| super.update(g, c); |
| } |
| |
| /** |
| * Returns <code>true</code> when the button is a toolbar button, |
| * <code>false</code> otherwise. |
| * |
| * @param b the button component to test |
| * |
| * @return <code>true</code> when the button is a toolbar button, |
| * <code>false</code> otherwise |
| */ |
| private boolean isToolbarButton(Component b) |
| { |
| Component parent = b.getParent(); |
| return parent instanceof JToolBar; |
| } |
| |
| /** |
| * Returns <code>true</code> if we should draw the button gradient, |
| * <code>false</code> otherwise. |
| * |
| * @param uiKey the UIManager key for the gradient |
| * |
| * @return <code>true</code> if we should draw the button gradient, |
| * <code>false</code> otherwise |
| */ |
| private boolean isDrawingGradient(String uiKey) |
| { |
| return (UIManager.get(uiKey) != null); |
| } |
| } |