J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package javax.swing.plaf.synth; |
| 27 | |
| 28 | import java.awt.*; |
| 29 | import java.awt.event.*; |
| 30 | |
| 31 | import java.beans.*; |
| 32 | |
| 33 | import javax.swing.*; |
| 34 | import javax.swing.event.*; |
| 35 | import javax.swing.plaf.*; |
| 36 | import javax.swing.plaf.basic.*; |
| 37 | import sun.swing.plaf.synth.SynthUI; |
| 38 | |
| 39 | |
| 40 | /** |
| 41 | * Synth's ScrollBarUI. |
| 42 | * |
| 43 | * @author Scott Violet |
| 44 | */ |
| 45 | class SynthScrollBarUI extends BasicScrollBarUI implements |
| 46 | PropertyChangeListener, SynthUI { |
| 47 | |
| 48 | private SynthStyle style; |
| 49 | private SynthStyle thumbStyle; |
| 50 | private SynthStyle trackStyle; |
| 51 | |
| 52 | private boolean validMinimumThumbSize; |
| 53 | private int scrollBarWidth; |
| 54 | |
| 55 | |
| 56 | public static ComponentUI createUI(JComponent c) { |
| 57 | return new SynthScrollBarUI(); |
| 58 | } |
| 59 | |
| 60 | protected void installDefaults() { |
| 61 | trackHighlight = NO_HIGHLIGHT; |
| 62 | if (scrollbar.getLayout() == null || |
| 63 | (scrollbar.getLayout() instanceof UIResource)) { |
| 64 | scrollbar.setLayout(this); |
| 65 | } |
| 66 | updateStyle(scrollbar); |
| 67 | } |
| 68 | |
| 69 | protected void configureScrollBarColors() { |
| 70 | } |
| 71 | |
| 72 | private void updateStyle(JScrollBar c) { |
| 73 | SynthStyle oldStyle = style; |
| 74 | SynthContext context = getContext(c, ENABLED); |
| 75 | style = SynthLookAndFeel.updateStyle(context, this); |
| 76 | if (style != oldStyle) { |
| 77 | scrollBarWidth = style.getInt(context,"ScrollBar.thumbHeight", 14); |
| 78 | minimumThumbSize = (Dimension)style.get(context, |
| 79 | "ScrollBar.minimumThumbSize"); |
| 80 | if (minimumThumbSize == null) { |
| 81 | minimumThumbSize = new Dimension(); |
| 82 | validMinimumThumbSize = false; |
| 83 | } |
| 84 | else { |
| 85 | validMinimumThumbSize = true; |
| 86 | } |
| 87 | maximumThumbSize = (Dimension)style.get(context, |
| 88 | "ScrollBar.maximumThumbSize"); |
| 89 | if (maximumThumbSize == null) { |
| 90 | maximumThumbSize = new Dimension(4096, 4097); |
| 91 | } |
| 92 | if (oldStyle != null) { |
| 93 | uninstallKeyboardActions(); |
| 94 | installKeyboardActions(); |
| 95 | } |
| 96 | } |
| 97 | context.dispose(); |
| 98 | |
| 99 | context = getContext(c, Region.SCROLL_BAR_TRACK, ENABLED); |
| 100 | trackStyle = SynthLookAndFeel.updateStyle(context, this); |
| 101 | context.dispose(); |
| 102 | |
| 103 | context = getContext(c, Region.SCROLL_BAR_THUMB, ENABLED); |
| 104 | thumbStyle = SynthLookAndFeel.updateStyle(context, this); |
| 105 | context.dispose(); |
| 106 | } |
| 107 | |
| 108 | protected void installListeners() { |
| 109 | super.installListeners(); |
| 110 | scrollbar.addPropertyChangeListener(this); |
| 111 | } |
| 112 | |
| 113 | protected void uninstallListeners() { |
| 114 | super.uninstallListeners(); |
| 115 | scrollbar.removePropertyChangeListener(this); |
| 116 | } |
| 117 | |
| 118 | protected void uninstallDefaults(){ |
| 119 | SynthContext context = getContext(scrollbar, ENABLED); |
| 120 | style.uninstallDefaults(context); |
| 121 | context.dispose(); |
| 122 | style = null; |
| 123 | |
| 124 | context = getContext(scrollbar, Region.SCROLL_BAR_TRACK, ENABLED); |
| 125 | trackStyle.uninstallDefaults(context); |
| 126 | context.dispose(); |
| 127 | trackStyle = null; |
| 128 | |
| 129 | context = getContext(scrollbar, Region.SCROLL_BAR_THUMB, ENABLED); |
| 130 | thumbStyle.uninstallDefaults(context); |
| 131 | context.dispose(); |
| 132 | thumbStyle = null; |
| 133 | |
| 134 | super.uninstallDefaults(); |
| 135 | } |
| 136 | |
| 137 | |
| 138 | public SynthContext getContext(JComponent c) { |
| 139 | return getContext(c, getComponentState(c)); |
| 140 | } |
| 141 | |
| 142 | private SynthContext getContext(JComponent c, int state) { |
| 143 | return SynthContext.getContext(SynthContext.class, c, |
| 144 | SynthLookAndFeel.getRegion(c), style, state); |
| 145 | } |
| 146 | |
| 147 | private Region getRegion(JComponent c) { |
| 148 | return SynthLookAndFeel.getRegion(c); |
| 149 | } |
| 150 | |
| 151 | private int getComponentState(JComponent c) { |
| 152 | return SynthLookAndFeel.getComponentState(c); |
| 153 | } |
| 154 | |
| 155 | private SynthContext getContext(JComponent c, Region region) { |
| 156 | return getContext(c, region, getComponentState(c, region)); |
| 157 | } |
| 158 | |
| 159 | private SynthContext getContext(JComponent c, Region region, int state) { |
| 160 | SynthStyle style = trackStyle; |
| 161 | |
| 162 | if (region == Region.SCROLL_BAR_THUMB) { |
| 163 | style = thumbStyle; |
| 164 | } |
| 165 | return SynthContext.getContext(SynthContext.class, c, region, style, |
| 166 | state); |
| 167 | } |
| 168 | |
| 169 | private int getComponentState(JComponent c, Region region) { |
| 170 | if (region == Region.SCROLL_BAR_THUMB && isThumbRollover() && |
| 171 | c.isEnabled()) { |
| 172 | return MOUSE_OVER; |
| 173 | } |
| 174 | return SynthLookAndFeel.getComponentState(c); |
| 175 | } |
| 176 | |
| 177 | public boolean getSupportsAbsolutePositioning() { |
| 178 | SynthContext context = getContext(scrollbar); |
| 179 | boolean value = style.getBoolean(context, |
| 180 | "ScrollBar.allowsAbsolutePositioning", false); |
| 181 | context.dispose(); |
| 182 | return value; |
| 183 | } |
| 184 | |
| 185 | public void update(Graphics g, JComponent c) { |
| 186 | SynthContext context = getContext(c); |
| 187 | |
| 188 | SynthLookAndFeel.update(context, g); |
| 189 | context.getPainter().paintScrollBarBackground(context, |
| 190 | g, 0, 0, c.getWidth(), c.getHeight(), |
| 191 | scrollbar.getOrientation()); |
| 192 | paint(context, g); |
| 193 | context.dispose(); |
| 194 | } |
| 195 | |
| 196 | public void paint(Graphics g, JComponent c) { |
| 197 | SynthContext context = getContext(c); |
| 198 | |
| 199 | paint(context, g); |
| 200 | context.dispose(); |
| 201 | } |
| 202 | |
| 203 | protected void paint(SynthContext context, Graphics g) { |
| 204 | SynthContext subcontext = getContext(scrollbar, |
| 205 | Region.SCROLL_BAR_TRACK); |
| 206 | paintTrack(subcontext, g, getTrackBounds()); |
| 207 | subcontext.dispose(); |
| 208 | |
| 209 | subcontext = getContext(scrollbar, Region.SCROLL_BAR_THUMB); |
| 210 | paintThumb(subcontext, g, getThumbBounds()); |
| 211 | subcontext.dispose(); |
| 212 | } |
| 213 | |
| 214 | public void paintBorder(SynthContext context, Graphics g, int x, |
| 215 | int y, int w, int h) { |
| 216 | context.getPainter().paintScrollBarBorder(context, g, x, y, w, h, |
| 217 | scrollbar.getOrientation()); |
| 218 | } |
| 219 | |
| 220 | protected void paintTrack(SynthContext ss, Graphics g, |
| 221 | Rectangle trackBounds) { |
| 222 | SynthLookAndFeel.updateSubregion(ss, g, trackBounds); |
| 223 | ss.getPainter().paintScrollBarTrackBackground(ss, g, trackBounds.x, |
| 224 | trackBounds.y, trackBounds.width, trackBounds.height, |
| 225 | scrollbar.getOrientation()); |
| 226 | ss.getPainter().paintScrollBarTrackBorder(ss, g, trackBounds.x, |
| 227 | trackBounds.y, trackBounds.width, trackBounds.height, |
| 228 | scrollbar.getOrientation()); |
| 229 | } |
| 230 | |
| 231 | protected void paintThumb(SynthContext ss, Graphics g, |
| 232 | Rectangle thumbBounds) { |
| 233 | SynthLookAndFeel.updateSubregion(ss, g, thumbBounds); |
| 234 | int orientation = scrollbar.getOrientation(); |
| 235 | ss.getPainter().paintScrollBarThumbBackground(ss, g, thumbBounds.x, |
| 236 | thumbBounds.y, thumbBounds.width, thumbBounds.height, |
| 237 | orientation); |
| 238 | ss.getPainter().paintScrollBarThumbBorder(ss, g, thumbBounds.x, |
| 239 | thumbBounds.y, thumbBounds.width, thumbBounds.height, |
| 240 | orientation); |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * A vertical scrollbar's preferred width is the maximum of |
| 245 | * preferred widths of the (non <code>null</code>) |
| 246 | * increment/decrement buttons, |
| 247 | * and the minimum width of the thumb. The preferred height is the |
| 248 | * sum of the preferred heights of the same parts. The basis for |
| 249 | * the preferred size of a horizontal scrollbar is similar. |
| 250 | * <p> |
| 251 | * The <code>preferredSize</code> is only computed once, subsequent |
| 252 | * calls to this method just return a cached size. |
| 253 | * |
| 254 | * @param c the <code>JScrollBar</code> that's delegating this method to us |
| 255 | * @return the preferred size of a Basic JScrollBar |
| 256 | * @see #getMaximumSize |
| 257 | * @see #getMinimumSize |
| 258 | */ |
| 259 | public Dimension getPreferredSize(JComponent c) { |
| 260 | Insets insets = c.getInsets(); |
| 261 | return (scrollbar.getOrientation() == JScrollBar.VERTICAL) |
| 262 | ? new Dimension(scrollBarWidth + insets.left + insets.right, 48) |
| 263 | : new Dimension(48, scrollBarWidth + insets.top + insets.bottom); |
| 264 | } |
| 265 | |
| 266 | protected Dimension getMinimumThumbSize() { |
| 267 | if (!validMinimumThumbSize) { |
| 268 | if (scrollbar.getOrientation() == JScrollBar.VERTICAL) { |
| 269 | minimumThumbSize.width = scrollBarWidth; |
| 270 | minimumThumbSize.height = 7; |
| 271 | } else { |
| 272 | minimumThumbSize.width = 7; |
| 273 | minimumThumbSize.height = scrollBarWidth; |
| 274 | } |
| 275 | } |
| 276 | return minimumThumbSize; |
| 277 | |
| 278 | } |
| 279 | |
| 280 | |
| 281 | protected JButton createDecreaseButton(int orientation) { |
| 282 | SynthArrowButton synthArrowButton = new SynthArrowButton(orientation); |
| 283 | synthArrowButton.setName("ScrollBar.button"); |
| 284 | return synthArrowButton; |
| 285 | } |
| 286 | |
| 287 | protected JButton createIncreaseButton(int orientation) { |
| 288 | SynthArrowButton synthArrowButton = new SynthArrowButton(orientation); |
| 289 | synthArrowButton.setName("ScrollBar.button"); |
| 290 | return synthArrowButton; |
| 291 | } |
| 292 | |
| 293 | protected void setThumbRollover(boolean active) { |
| 294 | if (isThumbRollover() != active) { |
| 295 | scrollbar.repaint(getThumbBounds()); |
| 296 | super.setThumbRollover(active); |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | private void updateButtonDirections() { |
| 301 | int orient = scrollbar.getOrientation(); |
| 302 | if (scrollbar.getComponentOrientation().isLeftToRight()) { |
| 303 | ((SynthArrowButton)incrButton).setDirection( |
| 304 | orient == HORIZONTAL? EAST : SOUTH); |
| 305 | ((SynthArrowButton)decrButton).setDirection( |
| 306 | orient == HORIZONTAL? WEST : NORTH); |
| 307 | } |
| 308 | else { |
| 309 | ((SynthArrowButton)incrButton).setDirection( |
| 310 | orient == HORIZONTAL? WEST : SOUTH); |
| 311 | ((SynthArrowButton)decrButton).setDirection( |
| 312 | orient == HORIZONTAL ? EAST : NORTH); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | // |
| 317 | // PropertyChangeListener |
| 318 | // |
| 319 | public void propertyChange(PropertyChangeEvent e) { |
| 320 | String propertyName = e.getPropertyName(); |
| 321 | |
| 322 | if (SynthLookAndFeel.shouldUpdateStyle(e)) { |
| 323 | updateStyle((JScrollBar)e.getSource()); |
| 324 | } |
| 325 | |
| 326 | if ("orientation" == propertyName) { |
| 327 | updateButtonDirections(); |
| 328 | } |
| 329 | else if ("componentOrientation" == propertyName) { |
| 330 | updateButtonDirections(); |
| 331 | } |
| 332 | } |
| 333 | } |