| /* |
| * Copyright (c) 2002, 2006, Oracle and/or its affiliates. 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing.plaf.synth; |
| |
| import java.awt.*; |
| import java.beans.*; |
| import javax.swing.*; |
| import javax.swing.plaf.*; |
| import javax.swing.plaf.basic.*; |
| |
| |
| /** |
| * Provides the Synth L&F UI delegate for |
| * {@link javax.swing.JScrollBar}. |
| * |
| * @author Scott Violet |
| * @since 1.7 |
| */ |
| public class SynthScrollBarUI extends BasicScrollBarUI |
| implements PropertyChangeListener, SynthUI { |
| |
| private SynthStyle style; |
| private SynthStyle thumbStyle; |
| private SynthStyle trackStyle; |
| |
| private boolean validMinimumThumbSize; |
| |
| public static ComponentUI createUI(JComponent c) { |
| return new SynthScrollBarUI(); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected void installDefaults() { |
| trackHighlight = NO_HIGHLIGHT; |
| if (scrollbar.getLayout() == null || |
| (scrollbar.getLayout() instanceof UIResource)) { |
| scrollbar.setLayout(this); |
| } |
| configureScrollBarColors(); |
| updateStyle(scrollbar); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected void configureScrollBarColors() { |
| } |
| |
| private void updateStyle(JScrollBar c) { |
| SynthStyle oldStyle = style; |
| SynthContext context = getContext(c, ENABLED); |
| style = SynthLookAndFeel.updateStyle(context, this); |
| if (style != oldStyle) { |
| scrollBarWidth = style.getInt(context,"ScrollBar.thumbHeight", 14); |
| minimumThumbSize = (Dimension)style.get(context, |
| "ScrollBar.minimumThumbSize"); |
| if (minimumThumbSize == null) { |
| minimumThumbSize = new Dimension(); |
| validMinimumThumbSize = false; |
| } |
| else { |
| validMinimumThumbSize = true; |
| } |
| maximumThumbSize = (Dimension)style.get(context, |
| "ScrollBar.maximumThumbSize"); |
| if (maximumThumbSize == null) { |
| maximumThumbSize = new Dimension(4096, 4097); |
| } |
| |
| incrGap = style.getInt(context, "ScrollBar.incrementButtonGap", 0); |
| decrGap = style.getInt(context, "ScrollBar.decrementButtonGap", 0); |
| |
| // handle scaling for sizeVarients for special case components. The |
| // key "JComponent.sizeVariant" scales for large/small/mini |
| // components are based on Apples LAF |
| String scaleKey = (String)scrollbar.getClientProperty( |
| "JComponent.sizeVariant"); |
| if (scaleKey != null){ |
| if ("large".equals(scaleKey)){ |
| scrollBarWidth *= 1.15; |
| incrGap *= 1.15; |
| decrGap *= 1.15; |
| } else if ("small".equals(scaleKey)){ |
| scrollBarWidth *= 0.857; |
| incrGap *= 0.857; |
| decrGap *= 0.857; |
| } else if ("mini".equals(scaleKey)){ |
| scrollBarWidth *= 0.714; |
| incrGap *= 0.714; |
| decrGap *= 0.714; |
| } |
| } |
| |
| if (oldStyle != null) { |
| uninstallKeyboardActions(); |
| installKeyboardActions(); |
| } |
| } |
| context.dispose(); |
| |
| context = getContext(c, Region.SCROLL_BAR_TRACK, ENABLED); |
| trackStyle = SynthLookAndFeel.updateStyle(context, this); |
| context.dispose(); |
| |
| context = getContext(c, Region.SCROLL_BAR_THUMB, ENABLED); |
| thumbStyle = SynthLookAndFeel.updateStyle(context, this); |
| context.dispose(); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected void installListeners() { |
| super.installListeners(); |
| scrollbar.addPropertyChangeListener(this); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected void uninstallListeners() { |
| super.uninstallListeners(); |
| scrollbar.removePropertyChangeListener(this); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected void uninstallDefaults(){ |
| SynthContext context = getContext(scrollbar, ENABLED); |
| style.uninstallDefaults(context); |
| context.dispose(); |
| style = null; |
| |
| context = getContext(scrollbar, Region.SCROLL_BAR_TRACK, ENABLED); |
| trackStyle.uninstallDefaults(context); |
| context.dispose(); |
| trackStyle = null; |
| |
| context = getContext(scrollbar, Region.SCROLL_BAR_THUMB, ENABLED); |
| thumbStyle.uninstallDefaults(context); |
| context.dispose(); |
| thumbStyle = null; |
| |
| super.uninstallDefaults(); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| public SynthContext getContext(JComponent c) { |
| return getContext(c, SynthLookAndFeel.getComponentState(c)); |
| } |
| |
| private SynthContext getContext(JComponent c, int state) { |
| return SynthContext.getContext(SynthContext.class, c, |
| SynthLookAndFeel.getRegion(c), style, state); |
| } |
| |
| private SynthContext getContext(JComponent c, Region region) { |
| return getContext(c, region, getComponentState(c, region)); |
| } |
| |
| private SynthContext getContext(JComponent c, Region region, int state) { |
| SynthStyle style = trackStyle; |
| |
| if (region == Region.SCROLL_BAR_THUMB) { |
| style = thumbStyle; |
| } |
| return SynthContext.getContext(SynthContext.class, c, region, style, |
| state); |
| } |
| |
| private int getComponentState(JComponent c, Region region) { |
| if (region == Region.SCROLL_BAR_THUMB && isThumbRollover() && |
| c.isEnabled()) { |
| return MOUSE_OVER; |
| } |
| return SynthLookAndFeel.getComponentState(c); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| public boolean getSupportsAbsolutePositioning() { |
| SynthContext context = getContext(scrollbar); |
| boolean value = style.getBoolean(context, |
| "ScrollBar.allowsAbsolutePositioning", false); |
| context.dispose(); |
| return value; |
| } |
| |
| /** |
| * Notifies this UI delegate to repaint the specified component. |
| * This method paints the component background, then calls |
| * the {@link #paint(SynthContext,Graphics)} method. |
| * |
| * <p>In general, this method does not need to be overridden by subclasses. |
| * All Look and Feel rendering code should reside in the {@code paint} method. |
| * |
| * @param g the {@code Graphics} object used for painting |
| * @param c the component being painted |
| * @see #paint(SynthContext,Graphics) |
| */ |
| @Override |
| public void update(Graphics g, JComponent c) { |
| SynthContext context = getContext(c); |
| |
| SynthLookAndFeel.update(context, g); |
| context.getPainter().paintScrollBarBackground(context, |
| g, 0, 0, c.getWidth(), c.getHeight(), |
| scrollbar.getOrientation()); |
| paint(context, g); |
| context.dispose(); |
| } |
| |
| /** |
| * Paints the specified component according to the Look and Feel. |
| * <p>This method is not used by Synth Look and Feel. |
| * Painting is handled by the {@link #paint(SynthContext,Graphics)} method. |
| * |
| * @param g the {@code Graphics} object used for painting |
| * @param c the component being painted |
| * @see #paint(SynthContext,Graphics) |
| */ |
| @Override |
| public void paint(Graphics g, JComponent c) { |
| SynthContext context = getContext(c); |
| |
| paint(context, g); |
| context.dispose(); |
| } |
| |
| /** |
| * Paints the specified component. |
| * |
| * @param context context for the component being painted |
| * @param g the {@code Graphics} object used for painting |
| * @see #update(Graphics,JComponent) |
| */ |
| protected void paint(SynthContext context, Graphics g) { |
| SynthContext subcontext = getContext(scrollbar, |
| Region.SCROLL_BAR_TRACK); |
| paintTrack(subcontext, g, getTrackBounds()); |
| subcontext.dispose(); |
| |
| subcontext = getContext(scrollbar, Region.SCROLL_BAR_THUMB); |
| paintThumb(subcontext, g, getThumbBounds()); |
| subcontext.dispose(); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| public void paintBorder(SynthContext context, Graphics g, int x, |
| int y, int w, int h) { |
| context.getPainter().paintScrollBarBorder(context, g, x, y, w, h, |
| scrollbar.getOrientation()); |
| } |
| |
| /** |
| * Paints the scrollbar track. |
| * |
| * @param context context for the component being painted |
| * @param g {@code Graphics} object used for painting |
| * @param trackBounds bounding box for the track |
| */ |
| protected void paintTrack(SynthContext context, Graphics g, |
| Rectangle trackBounds) { |
| SynthLookAndFeel.updateSubregion(context, g, trackBounds); |
| context.getPainter().paintScrollBarTrackBackground(context, g, trackBounds.x, |
| trackBounds.y, trackBounds.width, trackBounds.height, |
| scrollbar.getOrientation()); |
| context.getPainter().paintScrollBarTrackBorder(context, g, trackBounds.x, |
| trackBounds.y, trackBounds.width, trackBounds.height, |
| scrollbar.getOrientation()); |
| } |
| |
| /** |
| * Paints the scrollbar thumb. |
| * |
| * @param context context for the component being painted |
| * @param g {@code Graphics} object used for painting |
| * @param thumbBounds bounding box for the thumb |
| */ |
| protected void paintThumb(SynthContext context, Graphics g, |
| Rectangle thumbBounds) { |
| SynthLookAndFeel.updateSubregion(context, g, thumbBounds); |
| int orientation = scrollbar.getOrientation(); |
| context.getPainter().paintScrollBarThumbBackground(context, g, thumbBounds.x, |
| thumbBounds.y, thumbBounds.width, thumbBounds.height, |
| orientation); |
| context.getPainter().paintScrollBarThumbBorder(context, g, thumbBounds.x, |
| thumbBounds.y, thumbBounds.width, thumbBounds.height, |
| orientation); |
| } |
| |
| /** |
| * A vertical scrollbar's preferred width is the maximum of |
| * preferred widths of the (non <code>null</code>) |
| * increment/decrement buttons, |
| * and the minimum width of the thumb. The preferred height is the |
| * sum of the preferred heights of the same parts. The basis for |
| * the preferred size of a horizontal scrollbar is similar. |
| * <p> |
| * The <code>preferredSize</code> is only computed once, subsequent |
| * calls to this method just return a cached size. |
| * |
| * @param c the <code>JScrollBar</code> that's delegating this method to us |
| * @return the preferred size of a Basic JScrollBar |
| * @see #getMaximumSize |
| * @see #getMinimumSize |
| */ |
| @Override |
| public Dimension getPreferredSize(JComponent c) { |
| Insets insets = c.getInsets(); |
| return (scrollbar.getOrientation() == JScrollBar.VERTICAL) |
| ? new Dimension(scrollBarWidth + insets.left + insets.right, 48) |
| : new Dimension(48, scrollBarWidth + insets.top + insets.bottom); |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected Dimension getMinimumThumbSize() { |
| if (!validMinimumThumbSize) { |
| if (scrollbar.getOrientation() == JScrollBar.VERTICAL) { |
| minimumThumbSize.width = scrollBarWidth; |
| minimumThumbSize.height = 7; |
| } else { |
| minimumThumbSize.width = 7; |
| minimumThumbSize.height = scrollBarWidth; |
| } |
| } |
| return minimumThumbSize; |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected JButton createDecreaseButton(int orientation) { |
| SynthArrowButton synthArrowButton = new SynthArrowButton(orientation) { |
| @Override |
| public boolean contains(int x, int y) { |
| if (decrGap < 0) { //there is an overlap between the track and button |
| int width = getWidth(); |
| int height = getHeight(); |
| if (scrollbar.getOrientation() == JScrollBar.VERTICAL) { |
| //adjust the height by decrGap |
| //Note: decrGap is negative! |
| height += decrGap; |
| } else { |
| //adjust the width by decrGap |
| //Note: decrGap is negative! |
| width += decrGap; |
| } |
| return (x >= 0) && (x < width) && (y >= 0) && (y < height); |
| } |
| return super.contains(x, y); |
| } |
| }; |
| synthArrowButton.setName("ScrollBar.button"); |
| return synthArrowButton; |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected JButton createIncreaseButton(int orientation) { |
| SynthArrowButton synthArrowButton = new SynthArrowButton(orientation) { |
| @Override |
| public boolean contains(int x, int y) { |
| if (incrGap < 0) { //there is an overlap between the track and button |
| int width = getWidth(); |
| int height = getHeight(); |
| if (scrollbar.getOrientation() == JScrollBar.VERTICAL) { |
| //adjust the height and y by incrGap |
| //Note: incrGap is negative! |
| height += incrGap; |
| y += incrGap; |
| } else { |
| //adjust the width and x by incrGap |
| //Note: incrGap is negative! |
| width += incrGap; |
| x += incrGap; |
| } |
| return (x >= 0) && (x < width) && (y >= 0) && (y < height); |
| } |
| return super.contains(x, y); |
| } |
| }; |
| synthArrowButton.setName("ScrollBar.button"); |
| return synthArrowButton; |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| protected void setThumbRollover(boolean active) { |
| if (isThumbRollover() != active) { |
| scrollbar.repaint(getThumbBounds()); |
| super.setThumbRollover(active); |
| } |
| } |
| |
| private void updateButtonDirections() { |
| int orient = scrollbar.getOrientation(); |
| if (scrollbar.getComponentOrientation().isLeftToRight()) { |
| ((SynthArrowButton)incrButton).setDirection( |
| orient == HORIZONTAL? EAST : SOUTH); |
| ((SynthArrowButton)decrButton).setDirection( |
| orient == HORIZONTAL? WEST : NORTH); |
| } |
| else { |
| ((SynthArrowButton)incrButton).setDirection( |
| orient == HORIZONTAL? WEST : SOUTH); |
| ((SynthArrowButton)decrButton).setDirection( |
| orient == HORIZONTAL ? EAST : NORTH); |
| } |
| } |
| |
| // |
| // PropertyChangeListener |
| // |
| public void propertyChange(PropertyChangeEvent e) { |
| String propertyName = e.getPropertyName(); |
| |
| if (SynthLookAndFeel.shouldUpdateStyle(e)) { |
| updateStyle((JScrollBar)e.getSource()); |
| } |
| |
| if ("orientation" == propertyName) { |
| updateButtonDirections(); |
| } |
| else if ("componentOrientation" == propertyName) { |
| updateButtonDirections(); |
| } |
| } |
| } |
