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Diffstat (limited to 'libjava/classpath/javax/swing/plaf/metal/MetalSliderUI.java')
| -rw-r--r-- | libjava/classpath/javax/swing/plaf/metal/MetalSliderUI.java | 475 |
1 files changed, 475 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/plaf/metal/MetalSliderUI.java b/libjava/classpath/javax/swing/plaf/metal/MetalSliderUI.java new file mode 100644 index 000000000..e85c32462 --- /dev/null +++ b/libjava/classpath/javax/swing/plaf/metal/MetalSliderUI.java @@ -0,0 +1,475 @@ +/* MetalSliderUI.java + Copyright (C) 2005, 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.metal; + +import java.awt.Color; +import java.awt.Dimension; +import java.awt.Graphics; +import java.awt.Rectangle; +import java.beans.PropertyChangeEvent; +import java.beans.PropertyChangeListener; + +import javax.swing.Icon; +import javax.swing.JComponent; +import javax.swing.JSlider; +import javax.swing.UIManager; +import javax.swing.plaf.ComponentUI; +import javax.swing.plaf.basic.BasicGraphicsUtils; +import javax.swing.plaf.basic.BasicSliderUI; + +/** + * A UI delegate for the {@link JSlider} component. + */ +public class MetalSliderUI extends BasicSliderUI +{ + /** + * A property change handler that updates the rendered component in response + * to specific property change events. This custom handler is used to + * intercept the "JSlider.isFilled" property, which is only recognised by + * the {@link MetalLookAndFeel}. + */ + protected class MetalPropertyListener + extends BasicSliderUI.PropertyChangeHandler + { + /** + * Creates a new listener. + */ + protected MetalPropertyListener() + { + // Nothing to do here. + } + + /** + * Handles property change events. Events with the name "JSlider.isFilled" + * are handled here, and other events are passed to the superclass. + * + * @param e the property change event. + */ + public void propertyChange(PropertyChangeEvent e) + { + if (e.getPropertyName().equals(SLIDER_FILL)) + { + Boolean b = (Boolean) e.getNewValue(); + if (b == null) + filledSlider = false; + else + filledSlider = b.booleanValue(); + } + else + super.propertyChange(e); + } + } + + /** The thumb color (unused, because an icon is used to draw the thumb). */ + protected static Color thumbColor; + + /** + * The highlight color used for drawing the track rect when the slider is + * enabled. + */ + protected static Color highlightColor; + + /** + * The shadow color used for drawing the track rect when the slider is + * enabled. + */ + protected static Color darkShadowColor; + + /** The track width. */ + protected static int trackWidth = UIManager.getInt("Slider.trackWidth"); + + /** The length of the major tick marks. */ + protected static int tickLength = UIManager.getInt("Slider.majorTickLength"); + + /** The icon used for the thumb control of horizontally oriented sliders. */ + protected static Icon horizThumbIcon = UIManager.getIcon( + "Slider.horizontalThumbIcon"); + + /** The icon used for the thumb control of vertically oriented sliders. */ + protected static Icon vertThumbIcon = UIManager.getIcon( + "Slider.verticalThumbIcon"); + + /** The gap between the track and the tick marks. */ + protected final int TICK_BUFFER = 4; + + /** A key to look up the filledSlider setting in the {@link UIManager}. */ + protected final String SLIDER_FILL = "JSlider.isFilled"; + + /** + * A flag that controls whether or not the track is filled up to the value + * of the slider. + */ + protected boolean filledSlider; + + /** + * Constructs a new instance. + */ + public MetalSliderUI() + { + super(null); + filledSlider = UIManager.getBoolean(SLIDER_FILL); + darkShadowColor = MetalLookAndFeel.getControlDarkShadow(); + highlightColor = MetalLookAndFeel.getControlHighlight(); + } + + /** + * Returns a new instance of <code>MetalSliderUI</code>. + * + * @param component the component (ignored). + * + * @return A new instance of <code>MetalSliderUI</code>. + */ + public static ComponentUI createUI(JComponent component) + { + return new MetalSliderUI(); + } + + /** + * Installs the default for this UI delegate in the supplied component. + * + * @param c the component. + */ + public void installUI(JComponent c) + { + super.installUI(c); + Boolean b = (Boolean) c.getClientProperty(SLIDER_FILL); + if (b != null) + filledSlider = b.booleanValue(); + } + + /** + * Creates a property change listener for the slider. + * + * @param slider the slider. + * + * @return A new instance of {@link MetalPropertyListener}. + */ + protected PropertyChangeListener createPropertyChangeListener(JSlider slider) + { + return new MetalPropertyListener(); + } + + /** + * Paints the thumb icon for the slider. + * + * @param g the graphics device. + */ + public void paintThumb(Graphics g) + { + Color save = g.getColor(); + g.setColor(thumbColor); + if (slider.getOrientation() == JSlider.HORIZONTAL) + horizThumbIcon.paintIcon(slider, g, thumbRect.x, thumbRect.y); + else + vertThumbIcon.paintIcon(slider, g, thumbRect.x, thumbRect.y); + g.setColor(save); + } + + /** + * Paints the track along which the thumb control moves. + * + * @param g the graphics device. + */ + public void paintTrack(Graphics g) + { + Color shadowColor = MetalLookAndFeel.getControlShadow(); + if (slider.getOrientation() == JSlider.HORIZONTAL) + { + int trackX = trackRect.x; + int trackY = trackRect.y + (trackRect.height - getTrackWidth()) / 2; + int trackW = trackRect.width; + int trackH = getTrackWidth(); + + // draw border + if (slider.isEnabled()) + BasicGraphicsUtils.drawEtchedRect(g, trackX, trackY, trackW, trackH, + darkShadowColor, shadowColor, darkShadowColor, highlightColor); + else + { + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawRect(trackX, trackY, trackW - 2, trackH - 2); + } + + // fill track (if required) + if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme) + { + if (slider.isEnabled()) + { + int xPos = xPositionForValue(slider.getValue()); + int x = slider.getInverted() ? xPos : trackRect.x; + int w = slider.getInverted() ? trackX + trackW - xPos + : xPos - trackRect.x; + g.setColor(MetalLookAndFeel.getWhite()); + g.drawLine(x + 1, trackY + 1, x + w - 3, trackY + 1); + g.setColor(UIManager.getColor("Slider.altTrackColor")); + g.drawLine(x + 1, trackY + 2, x + w - 3, trackY + 2); + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawLine(x + 1, trackY + 3, x + w - 3, trackY + 3); + g.setColor(MetalLookAndFeel.getPrimaryControlShadow()); + g.drawLine(x + 1, trackY + 4, x + w - 3, trackY + 4); + } + } + else if (filledSlider) + { + int xPos = xPositionForValue(slider.getValue()); + int x = slider.getInverted() ? xPos : trackRect.x; + int w = slider.getInverted() ? trackX + trackW - xPos + : xPos - trackRect.x; + g.setColor(MetalLookAndFeel.getControlShadow()); + g.fillRect(x + 1, trackY + 1, w - 3, getTrackWidth() - 3); + if (slider.isEnabled()) + { + g.setColor(MetalLookAndFeel.getControl()); + g.drawLine(x + 1, trackY + 1, x + w - 3, trackY + 1); + g.drawLine(x + 1, trackY + 1, x + 1, + trackY + getTrackWidth() - 3); + } + } + } + else + { + int trackX = trackRect.x + (trackRect.width - getTrackWidth()) / 2; + int trackY = trackRect.y; + int trackW = getTrackWidth(); + int trackH = trackRect.height; + if (slider.isEnabled()) + BasicGraphicsUtils.drawEtchedRect(g, trackX, trackY, trackW, trackH, + darkShadowColor, shadowColor, darkShadowColor, highlightColor); + else + { + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawRect(trackX, trackY, trackW - 2, trackH - 2); + } + + // Fill track if necessary. + if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme) + { + if (slider.isEnabled()) + { + int yPos = yPositionForValue(slider.getValue()); + int y = slider.getInverted() ? trackY : yPos; + int h = slider.getInverted() ? yPos - trackY + : trackY + trackH - yPos; + + g.setColor(MetalLookAndFeel.getWhite()); + g.drawLine(trackX + 1, y + 1, trackX + 1, y + h - 3); + g.setColor(UIManager.getColor("Slider.altTrackColor")); + g.drawLine(trackX + 2, y + 1, trackX + 2, y + h - 3); + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawLine(trackX + 3, y + 1, trackX + 3, y + h - 3); + g.setColor(MetalLookAndFeel.getPrimaryControlShadow()); + g.drawLine(trackX + 4, y + 1, trackX + 4, y + h - 3); + } + } + else if (filledSlider) + { + int yPos = yPositionForValue(slider.getValue()); + int y = slider.getInverted() ? trackY : yPos; + int h = slider.getInverted() ? yPos - trackY + : trackY + trackH - yPos; + g.setColor(MetalLookAndFeel.getControlShadow()); + g.fillRect(trackX + 1, y + 1, getTrackWidth() - 3, h - 3); + if (slider.isEnabled()) + { + g.setColor(MetalLookAndFeel.getControl()); + g.drawLine(trackX + 1, y + 1, trackX + trackW - 3, y + 1); + g.drawLine(trackX + 1, y + 1, trackX + 1, y + h - 3); + } + } + } + } + + /** + * Draws the focus rectangle for the slider. The Metal look and feel + * indicates that the {@link JSlider} has the focus by changing the color of + * the thumb control - this is handled elsewhere and so this method is empty + * (it overrides the method in the {@link BasicSliderUI} class to prevent + * a default focus highlight from being drawn). + * + * @param g the graphics device. + */ + public void paintFocus(Graphics g) + { + thumbColor = getFocusColor(); + paintThumb(g); + } + + /** + * Returns the size of the thumb icon. + * + * @return The size of the thumb icon. + */ + protected Dimension getThumbSize() + { + if (slider.getOrientation() == JSlider.HORIZONTAL) + return new Dimension(horizThumbIcon.getIconWidth(), + horizThumbIcon.getIconHeight()); + else + return new Dimension(vertThumbIcon.getIconWidth(), + vertThumbIcon.getIconHeight()); + } + + /** + * Returns the length of the major tick marks. + * + * @return The length of the major tick marks. + */ + public int getTickLength() + { + int len = tickLength + TICK_BUFFER + 1; + if (slider.getOrientation() == JSlider.VERTICAL) + len += 2; + return len; + } + + /** + * Returns the track width. + * + * @return The track width. + */ + protected int getTrackWidth() + { + return trackWidth; + } + + /** + * Returns the track length. + * + * @return The track length. + */ + protected int getTrackLength() + { + return slider.getOrientation() == JSlider.HORIZONTAL + ? tickRect.width : tickRect.height; + } + + /** + * Returns the thumb overhang. + * + * @return The thumb overhang. + */ + protected int getThumbOverhang() + { + // FIXME: for what might this method be used? + return 0; + } + + protected void scrollDueToClickInTrack(int dir) + { + // FIXME: for what might this method be overridden? + super.scrollDueToClickInTrack(dir); + } + + /** + * Paints the minor ticks for a slider with a horizontal orientation. + * + * @param g the graphics device. + * @param tickBounds the tick bounds. + * @param x the x value for the tick. + */ + protected void paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds, + int x) + { + // Note the incoming 'g' has a translation in place to get us to the + // start of the tick rect already... + if (slider.isEnabled()) + g.setColor(slider.getForeground()); + else + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawLine(x, TICK_BUFFER, x, TICK_BUFFER + tickLength / 2); + } + + /** + * Paints the major ticks for a slider with a horizontal orientation. + * + * @param g the graphics device. + * @param tickBounds the tick bounds. + * @param x the x value for the tick. + */ + protected void paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds, + int x) + { + // Note the incoming 'g' has a translation in place to get us to the + // start of the tick rect already... + if (slider.isEnabled()) + g.setColor(slider.getForeground()); + else + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawLine(x, TICK_BUFFER, x, TICK_BUFFER + tickLength - 1); + } + + /** + * Paints the minor ticks for a slider with a vertical orientation. + * + * @param g the graphics device. + * @param tickBounds the tick bounds. + * @param y the y value for the tick. + */ + protected void paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds, + int y) + { + // Note the incoming 'g' has a translation in place to get us to the + // start of the tick rect already... + if (slider.isEnabled()) + g.setColor(slider.getForeground()); + else + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawLine(TICK_BUFFER, y, TICK_BUFFER + tickLength / 2, y); + } + + /** + * Paints the major ticks for a slider with a vertical orientation. + * + * @param g the graphics device. + * @param tickBounds the tick bounds. + * @param y the y value for the tick. + */ + protected void paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds, + int y) + { + // Note the incoming 'g' has a translation in place to get us to the + // start of the tick rect already... + if (slider.isEnabled()) + g.setColor(slider.getForeground()); + else + g.setColor(MetalLookAndFeel.getControlShadow()); + g.drawLine(TICK_BUFFER, y, TICK_BUFFER + tickLength, y); + } + +} |