Mercurial > projects > dwt-linux
annotate dwt/widgets/CoolItem.d @ 240:ce446666f5a2
Update to SWT 3.4M7
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 12 May 2008 19:13:01 +0200 |
| parents | 17f8449522fd |
| children | 5a30aa9820f3 |
| rev | line source |
|---|---|
|
150
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parents:
108
diff
changeset
|
1 /******************************************************************************* |
| 76 | 2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 108 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 76 | 12 *******************************************************************************/ |
| 13 module dwt.widgets.CoolItem; | |
| 14 | |
| 15 | |
| 16 | |
| 17 import dwt.DWT; | |
| 18 import dwt.DWTException; | |
| 19 import dwt.events.SelectionEvent; | |
| 20 import dwt.events.SelectionListener; | |
| 21 import dwt.graphics.Color; | |
| 22 import dwt.graphics.GC; | |
| 23 import dwt.graphics.Image; | |
| 24 import dwt.graphics.ImageData; | |
| 25 import dwt.graphics.PaletteData; | |
| 26 import dwt.graphics.Point; | |
| 27 import dwt.graphics.RGB; | |
| 28 import dwt.graphics.Rectangle; | |
| 29 import dwt.widgets.Item; | |
| 30 import dwt.widgets.Control; | |
| 31 import dwt.widgets.CoolBar; | |
| 32 import dwt.widgets.ToolBar; | |
| 33 import dwt.widgets.Event; | |
| 34 import dwt.widgets.TypedListener; | |
| 35 import dwt.widgets.ToolBar; | |
| 36 import dwt.widgets.ToolItem; | |
| 37 import dwt.widgets.Listener; | |
| 38 | |
| 39 /** | |
| 40 * Instances of this class are selectable user interface | |
| 41 * objects that represent the dynamically positionable | |
| 42 * areas of a <code>CoolBar</code>. | |
| 43 * <dl> | |
| 44 * <dt><b>Styles:</b></dt> | |
| 45 * <dd>DROP_DOWN</dd> | |
| 46 * <dt><b>Events:</b></dt> | |
| 47 * <dd>Selection</dd> | |
| 48 * </dl> | |
| 49 * <p> | |
| 50 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 51 * </p> | |
| 52 */ | |
| 53 public class CoolItem : Item { | |
| 54 Control control; | |
| 55 CoolBar parent; | |
| 56 bool ideal; | |
| 57 int preferredWidth, preferredHeight, minimumWidth, minimumHeight, requestedWidth; | |
| 58 Rectangle itemBounds; | |
| 59 | |
| 60 static const int MARGIN_WIDTH = 4; | |
| 61 static const int GRABBER_WIDTH = 2; | |
| 62 static const int MINIMUM_WIDTH = (2 * MARGIN_WIDTH) + GRABBER_WIDTH; | |
| 63 | |
| 64 private int CHEVRON_HORIZONTAL_TRIM = -1; //platform dependent values | |
| 65 private int CHEVRON_VERTICAL_TRIM = -1; | |
| 66 private static const int CHEVRON_LEFT_MARGIN = 2; | |
| 67 private static const int CHEVRON_IMAGE_WIDTH = 8; //Width to draw the double arrow | |
| 68 | |
| 69 ToolBar chevron; | |
| 70 bool wrap; | |
| 71 Image arrowImage = null; | |
| 72 | |
| 73 /** | |
| 74 * Constructs a new instance of this class given its parent | |
| 75 * (which must be a <code>CoolBar</code>) and a style value | |
| 76 * describing its behavior and appearance. The item is added | |
| 77 * to the end of the items maintained by its parent. | |
| 78 * <p> | |
| 79 * The style value is either one of the style constants defined in | |
| 80 * class <code>DWT</code> which is applicable to instances of this | |
| 81 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 82 * (that is, using the <code>int</code> "|" operator) two or more | |
| 83 * of those <code>DWT</code> style constants. The class description | |
| 84 * lists the style constants that are applicable to the class. | |
| 85 * Style bits are also inherited from superclasses. | |
| 86 * </p> | |
| 87 * | |
| 88 * @param parent a composite control which will be the parent of the new instance (cannot be null) | |
| 89 * @param style the style of control to construct | |
| 90 * | |
| 91 * @exception IllegalArgumentException <ul> | |
| 92 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 93 * </ul> | |
| 94 * @exception DWTException <ul> | |
| 95 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 96 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
| 97 * </ul> | |
| 98 * | |
| 99 * @see DWT#DROP_DOWN | |
| 100 * @see Widget#checkSubclass | |
| 101 * @see Widget#getStyle | |
| 102 */ | |
| 103 public this (CoolBar parent, int style) { | |
| 104 super(parent, style); | |
| 105 itemBounds = new Rectangle(0, 0, 0, 0); | |
| 106 this.parent = parent; | |
| 107 parent.createItem (this, parent.getItemCount()); | |
| 108 calculateChevronTrim (); | |
| 109 } | |
| 110 /** | |
| 111 * Constructs a new instance of this class given its parent | |
| 112 * (which must be a <code>CoolBar</code>), a style value | |
| 113 * describing its behavior and appearance, and the index | |
| 114 * at which to place it in the items maintained by its parent. | |
| 115 * <p> | |
| 116 * The style value is either one of the style constants defined in | |
| 117 * class <code>DWT</code> which is applicable to instances of this | |
| 118 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 119 * (that is, using the <code>int</code> "|" operator) two or more | |
| 120 * of those <code>DWT</code> style constants. The class description | |
| 121 * lists the style constants that are applicable to the class. | |
| 122 * Style bits are also inherited from superclasses. | |
| 123 * </p> | |
| 124 * | |
| 125 * @param parent a composite control which will be the parent of the new instance (cannot be null) | |
| 126 * @param style the style of control to construct | |
| 127 * @param index the zero-relative index at which to store the receiver in its parent | |
| 128 * | |
| 129 * @exception IllegalArgumentException <ul> | |
| 130 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 131 * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</li> | |
| 132 * </ul> | |
| 133 * @exception DWTException <ul> | |
| 134 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 135 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
| 136 * </ul> | |
| 137 * | |
| 138 * @see DWT#DROP_DOWN | |
| 139 * @see Widget#checkSubclass | |
| 140 * @see Widget#getStyle | |
| 141 */ | |
| 142 public this (CoolBar parent, int style, int index) { | |
| 143 super(parent, style); | |
| 144 itemBounds = new Rectangle(0, 0, 0, 0); | |
| 145 this.parent = parent; | |
| 146 parent.createItem (this, index); | |
| 147 calculateChevronTrim (); | |
| 148 } | |
| 149 /** | |
| 150 * Adds the listener to the collection of listeners that will | |
| 151 * be notified when the control is selected by the user, by sending it one | |
| 152 * of the messages defined in the <code>SelectionListener</code> | |
| 153 * interface. | |
| 154 * <p> | |
| 155 * If <code>widgetSelected</code> is called when the mouse is over | |
| 156 * the drop-down arrow (or 'chevron') portion of the cool item, | |
| 157 * the event object detail field contains the value <code>DWT.ARROW</code>, | |
| 158 * and the x and y fields in the event object represent the point at | |
| 159 * the bottom left of the chevron, where the menu should be popped up. | |
| 160 * <code>widgetDefaultSelected</code> is not called. | |
| 161 * </p> | |
| 162 * | |
| 163 * @param listener the listener which should be notified when the control is selected by the user | |
| 164 * | |
| 165 * @exception IllegalArgumentException <ul> | |
| 166 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 167 * </ul> | |
| 168 * @exception DWTException <ul> | |
| 169 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 170 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 171 * </ul> | |
| 172 * | |
| 173 * @see SelectionListener | |
| 174 * @see #removeSelectionListener | |
| 175 * @see SelectionEvent | |
| 176 * | |
| 177 * @since 2.0 | |
| 178 */ | |
| 179 public void addSelectionListener(SelectionListener listener) { | |
| 180 checkWidget(); | |
| 181 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); | |
| 182 TypedListener typedListener = new TypedListener (listener); | |
| 183 addListener (DWT.Selection,typedListener); | |
| 184 addListener (DWT.DefaultSelection,typedListener); | |
| 185 } | |
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186 protected override void checkSubclass () { |
| 76 | 187 if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); |
| 188 } | |
| 189 /* | |
| 190 * Find the trim size of the Toolbar widget in the current platform. | |
| 191 */ | |
| 192 void calculateChevronTrim () { | |
| 193 ToolBar tb = new ToolBar (parent, DWT.FLAT); | |
| 194 ToolItem ti = new ToolItem (tb, DWT.PUSH); | |
| 195 Image image = new Image (display, 1, 1); | |
| 196 ti.setImage (image); | |
| 197 Point size = tb.computeSize (DWT.DEFAULT, DWT.DEFAULT); | |
| 198 size = parent.fixPoint(size.x, size.y); | |
| 199 CHEVRON_HORIZONTAL_TRIM = size.x - 1; | |
| 200 CHEVRON_VERTICAL_TRIM = size.y - 1; | |
| 201 tb.dispose (); | |
| 202 ti.dispose (); | |
| 203 image.dispose (); | |
| 204 } | |
| 205 /** | |
| 206 * Returns the preferred size of the receiver. | |
| 207 * <p> | |
| 208 * The <em>preferred size</em> of a <code>CoolItem</code> is the size that | |
| 209 * it would best be displayed at. The width hint and height hint arguments | |
| 210 * allow the caller to ask the instance questions such as "Given a particular | |
| 211 * width, how high does it need to be to show all of the contents?" | |
| 212 * To indicate that the caller does not wish to constrain a particular | |
| 213 * dimension, the constant <code>DWT.DEFAULT</code> is passed for the hint. | |
| 214 * </p> | |
| 215 * | |
| 216 * @param wHint the width hint (can be <code>DWT.DEFAULT</code>) | |
| 217 * @param hHint the height hint (can be <code>DWT.DEFAULT</code>) | |
| 218 * @return the preferred size | |
| 219 * | |
| 220 * @exception DWTException <ul> | |
| 221 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 222 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 223 * </ul> | |
| 224 * | |
| 225 * @see Layout | |
| 226 * @see #getBounds | |
| 227 * @see #getSize | |
| 228 * @see Control#getBorderWidth | |
| 229 * @see Scrollable#computeTrim | |
| 230 * @see Scrollable#getClientArea | |
| 231 */ | |
| 232 public Point computeSize (int wHint, int hHint) { | |
| 233 checkWidget(); | |
| 234 int width = wHint, height = hHint; | |
| 235 if (wHint is DWT.DEFAULT) width = 32; | |
| 236 if (hHint is DWT.DEFAULT) height = 32; | |
| 237 if ((parent.style & DWT.VERTICAL) !is 0) { | |
| 238 height += MINIMUM_WIDTH; | |
| 239 } else { | |
| 240 width += MINIMUM_WIDTH; | |
| 241 } | |
| 242 return new Point (width, height); | |
| 243 } | |
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parents:
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244 public override void dispose () { |
| 76 | 245 if (isDisposed()) return; |
| 246 | |
| 247 /* | |
| 248 * Must call parent.destroyItem() before super.dispose(), since it needs to | |
| 249 * query the bounds to properly remove the item. | |
| 250 */ | |
| 251 parent.destroyItem(this); | |
| 252 super.dispose (); | |
| 253 parent = null; | |
| 254 control = null; | |
| 255 | |
| 256 /* | |
| 257 * Although the parent for the chevron is the CoolBar (CoolItem can not be the parent) | |
| 258 * it has to be disposed with the item | |
| 259 */ | |
| 260 if (chevron !is null && !chevron.isDisposed()) chevron.dispose(); | |
| 261 chevron = null; | |
| 262 if (arrowImage !is null && !arrowImage.isDisposed()) arrowImage.dispose(); | |
| 263 arrowImage = null; | |
| 264 } | |
| 265 | |
| 266 Image createArrowImage (int width, int height) { | |
| 267 Point point = parent.fixPoint(width, height); | |
| 268 width = point.x; | |
| 269 height = point.y; | |
| 270 Color foreground = parent.getForeground (); | |
| 271 Color black = display.getSystemColor (DWT.COLOR_BLACK); | |
| 272 Color background = parent.getBackground (); | |
| 273 | |
| 274 PaletteData palette = new PaletteData ( [foreground.getRGB(), background.getRGB(), black.getRGB() ] ); | |
| 275 ImageData imageData = new ImageData (width, height, 4, palette); | |
| 276 imageData.transparentPixel = 1; | |
| 277 Image image = new Image (display, imageData); | |
| 278 | |
| 240 | 279 GC gc = new GC (image, parent.getStyle() & DWT.RIGHT_TO_LEFT); |
| 76 | 280 gc.setBackground (background); |
| 281 gc.fillRectangle (0, 0, width, height); | |
| 282 gc.setForeground (black); | |
| 283 | |
| 284 int startX = 0 ; | |
| 285 if ((parent.style & DWT.VERTICAL) !is 0) { | |
| 286 startX = width - CHEVRON_IMAGE_WIDTH; | |
| 287 } | |
| 288 int startY = height / 6; | |
| 289 int step = 2; | |
| 290 gc.drawLine (startX, startY, startX + step, startY + step); | |
| 291 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); | |
| 292 startX++; | |
| 293 gc.drawLine (startX, startY, startX + step, startY + step); | |
| 294 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); | |
| 295 startX += 3; | |
| 296 gc.drawLine (startX, startY, startX + step, startY + step); | |
| 297 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); | |
| 298 startX++; | |
| 299 gc.drawLine (startX, startY, startX + step, startY + step); | |
| 300 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); | |
| 301 gc.dispose (); | |
| 302 return image; | |
| 303 } | |
| 304 /** | |
| 305 * Returns a rectangle describing the receiver's size and location | |
| 306 * relative to its parent. | |
| 307 * | |
| 308 * @return the receiver's bounding rectangle | |
| 309 * | |
| 310 * @exception DWTException <ul> | |
| 311 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 312 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 313 * </ul> | |
| 314 */ | |
| 315 public Rectangle getBounds () { | |
| 316 checkWidget(); | |
| 317 return parent.fixRectangle(itemBounds.x, itemBounds.y, itemBounds.width, itemBounds.height); | |
| 318 } | |
| 319 Rectangle internalGetBounds () { | |
| 320 return new Rectangle(itemBounds.x, itemBounds.y, itemBounds.width, itemBounds.height); | |
| 321 } | |
| 322 /** | |
| 323 * Returns the control that is associated with the receiver. | |
| 324 * | |
| 325 * @return the control that is contained by the receiver | |
| 326 * | |
| 327 * @exception DWTException <ul> | |
| 328 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 329 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 330 * </ul> | |
| 331 */ | |
| 332 public Control getControl () { | |
| 333 checkWidget(); | |
| 334 return control; | |
| 335 } | |
| 336 /** | |
| 337 * Returns the minimum size that the cool item can | |
| 338 * be resized to using the cool item's gripper. | |
| 339 * | |
| 340 * @return a point containing the minimum width and height of the cool item, in pixels | |
| 341 * | |
| 342 * @exception DWTException <ul> | |
| 343 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 344 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 345 * </ul> | |
| 346 * | |
| 347 * @since 2.0 | |
| 348 */ | |
| 349 public Point getMinimumSize () { | |
| 350 checkWidget(); | |
| 351 return parent.fixPoint(minimumWidth, minimumHeight); | |
| 352 } | |
| 353 /** | |
| 354 * Returns the receiver's parent, which must be a <code>CoolBar</code>. | |
| 355 * | |
| 356 * @return the receiver's parent | |
| 357 * | |
| 358 * @exception DWTException <ul> | |
| 359 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 360 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 361 * </ul> | |
| 362 */ | |
| 363 public CoolBar getParent () { | |
| 364 checkWidget(); | |
| 365 return parent; | |
| 366 } | |
| 367 /** | |
| 368 * Returns a point describing the receiver's ideal size. | |
| 369 * The x coordinate of the result is the ideal width of the receiver. | |
| 370 * The y coordinate of the result is the ideal height of the receiver. | |
| 371 * | |
| 372 * @return the receiver's ideal size | |
| 373 * | |
| 374 * @exception DWTException <ul> | |
| 375 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 376 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 377 * </ul> | |
| 378 */ | |
| 379 public Point getPreferredSize () { | |
| 380 checkWidget(); | |
| 381 return parent.fixPoint(preferredWidth, preferredHeight); | |
| 382 } | |
| 383 /** | |
| 384 * Returns a point describing the receiver's size. The | |
| 385 * x coordinate of the result is the width of the receiver. | |
| 386 * The y coordinate of the result is the height of the | |
| 387 * receiver. | |
| 388 * | |
| 389 * @return the receiver's size | |
| 390 * | |
| 391 * @exception DWTException <ul> | |
| 392 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 393 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 394 * </ul> | |
| 395 */ | |
| 396 public Point getSize () { | |
| 397 checkWidget(); | |
| 398 return parent.fixPoint(itemBounds.width, itemBounds.height); | |
| 399 } | |
| 400 int internalGetMinimumWidth () { | |
| 401 int width = minimumWidth + MINIMUM_WIDTH; | |
| 402 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { | |
| 403 width += CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; | |
| 404 } | |
| 405 return width; | |
| 406 } | |
| 407 /* | |
| 408 * Called when the chevron is selected. | |
| 409 */ | |
| 410 void onSelection (Event ev) { | |
| 411 Rectangle bounds = chevron.getBounds(); | |
| 412 Event event = new Event(); | |
| 413 event.detail = DWT.ARROW; | |
| 414 if ((parent.style & DWT.VERTICAL) !is 0) { | |
| 415 event.x = bounds.x + bounds.width; | |
| 416 event.y = bounds.y; | |
| 417 } else { | |
| 418 event.x = bounds.x; | |
| 419 event.y = bounds.y + bounds.height; | |
| 420 } | |
| 421 postEvent (DWT.Selection, event); | |
| 422 } | |
| 423 /** | |
| 424 * Removes the listener from the collection of listeners that | |
| 425 * will be notified when the control is selected by the user. | |
| 426 * | |
| 427 * @param listener the listener which should no longer be notified | |
| 428 * | |
| 429 * @exception IllegalArgumentException <ul> | |
| 430 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 431 * </ul> | |
| 432 * @exception DWTException <ul> | |
| 433 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 434 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 435 * </ul> | |
| 436 * | |
| 437 * @see SelectionListener | |
| 438 * @see #addSelectionListener | |
| 439 * | |
| 440 * @since 2.0 | |
| 441 */ | |
| 442 public void removeSelectionListener(SelectionListener listener) { | |
| 443 checkWidget(); | |
| 444 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); | |
| 445 if (eventTable is null) return; | |
| 446 eventTable.unhook (DWT.Selection, listener); | |
| 447 eventTable.unhook (DWT.DefaultSelection,listener); | |
| 448 } | |
| 449 void setBounds (int x, int y, int width, int height) { | |
| 450 itemBounds.x = x; | |
| 451 itemBounds.y = y; | |
| 452 itemBounds.width = width; | |
| 453 itemBounds.height = height; | |
| 454 if (control !is null) { | |
| 455 int controlWidth = width - MINIMUM_WIDTH; | |
| 456 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { | |
| 457 controlWidth -= CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; | |
| 458 } | |
| 459 control.setBounds (parent.fixRectangle(x + MINIMUM_WIDTH, y, controlWidth, height)); | |
| 460 } | |
| 461 updateChevron(); | |
| 462 } | |
| 463 /** | |
| 464 * Sets the control that is associated with the receiver | |
| 465 * to the argument. | |
| 466 * | |
| 467 * @param control the new control that will be contained by the receiver | |
| 468 * | |
| 469 * @exception IllegalArgumentException <ul> | |
| 470 * <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li> | |
| 471 * <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree</li> | |
| 472 * </ul> | |
| 473 * @exception DWTException <ul> | |
| 474 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 475 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 476 * </ul> | |
| 477 */ | |
| 478 public void setControl (Control control) { | |
| 479 checkWidget(); | |
| 480 if (control !is null) { | |
| 481 if (control.isDisposed()) error (DWT.ERROR_INVALID_ARGUMENT); | |
| 482 if (control.parent !is parent) error (DWT.ERROR_INVALID_PARENT); | |
| 483 } | |
| 484 this.control = control; | |
| 485 if (control !is null) { | |
| 486 int controlWidth = itemBounds.width - MINIMUM_WIDTH; | |
| 487 if ((style & DWT.DROP_DOWN) !is 0 && itemBounds.width < preferredWidth) { | |
| 488 controlWidth -= CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; | |
| 489 } | |
| 490 control.setBounds (parent.fixRectangle(itemBounds.x + MINIMUM_WIDTH, itemBounds.y, controlWidth, itemBounds.height)); | |
| 491 } | |
| 492 } | |
| 493 /** | |
| 494 * Sets the minimum size that the cool item can be resized to | |
| 495 * using the cool item's gripper, to the point specified by the arguments. | |
| 496 * | |
| 497 * @param width the minimum width of the cool item, in pixels | |
| 498 * @param height the minimum height of the cool item, in pixels | |
| 499 * | |
| 500 * @exception DWTException <ul> | |
| 501 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 502 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 503 * </ul> | |
| 504 * | |
| 505 * @since 2.0 | |
| 506 */ | |
| 507 public void setMinimumSize (int width, int height) { | |
| 508 checkWidget (); | |
| 509 Point point = parent.fixPoint(width, height); | |
| 510 minimumWidth = point.x; | |
| 511 minimumHeight = point.y; | |
| 512 } | |
| 513 /** | |
| 514 * Sets the minimum size that the cool item can be resized to | |
| 515 * using the cool item's gripper, to the point specified by the argument. | |
| 516 * | |
| 517 * @param size a point representing the minimum width and height of the cool item, in pixels | |
| 518 * | |
| 519 * @exception IllegalArgumentException <ul> | |
| 520 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> | |
| 521 * </ul> | |
| 522 * @exception DWTException <ul> | |
| 523 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 524 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 525 * </ul> | |
| 526 * | |
| 527 * @since 2.0 | |
| 528 */ | |
| 529 public void setMinimumSize (Point size) { | |
| 530 checkWidget (); | |
| 531 if (size is null) error(DWT.ERROR_NULL_ARGUMENT); | |
| 532 setMinimumSize(size.x, size.y); | |
| 533 } | |
| 534 /** | |
| 535 * Sets the receiver's ideal size to the point specified by the arguments. | |
| 536 * | |
| 537 * @param width the new ideal width for the receiver | |
| 538 * @param height the new ideal height for the receiver | |
| 539 * | |
| 540 * @exception DWTException <ul> | |
| 541 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 542 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 543 * </ul> | |
| 544 */ | |
| 545 public void setPreferredSize (int width, int height) { | |
| 546 checkWidget(); | |
| 547 ideal = true; | |
| 548 Point point = parent.fixPoint(width, height); | |
| 549 preferredWidth = Math.max (point.x, MINIMUM_WIDTH); | |
| 550 preferredHeight = point.y; | |
| 551 } | |
| 552 /** | |
| 553 * Sets the receiver's ideal size to the point specified by the argument. | |
| 554 * | |
| 555 * @param size the new ideal size for the receiver | |
| 556 * | |
| 557 * @exception IllegalArgumentException <ul> | |
| 558 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> | |
| 559 * </ul> | |
| 560 * @exception DWTException <ul> | |
| 561 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 562 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 563 * </ul> | |
| 564 */ | |
| 565 public void setPreferredSize (Point size) { | |
| 566 checkWidget(); | |
| 567 if (size is null) error(DWT.ERROR_NULL_ARGUMENT); | |
| 568 setPreferredSize(size.x, size.y); | |
| 569 } | |
| 570 /** | |
| 571 * Sets the receiver's size to the point specified by the arguments. | |
| 572 * <p> | |
| 573 * Note: Attempting to set the width or height of the | |
| 574 * receiver to a negative number will cause that | |
| 575 * value to be set to zero instead. | |
| 576 * </p> | |
| 577 * | |
| 578 * @param width the new width for the receiver | |
| 579 * @param height the new height for the receiver | |
| 580 * | |
| 581 * @exception DWTException <ul> | |
| 582 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 583 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 584 * </ul> | |
| 585 */ | |
| 586 public void setSize (int width, int height) { | |
| 587 checkWidget(); | |
| 588 Point point = parent.fixPoint(width, height); | |
| 589 width = Math.max(point.x, minimumWidth + MINIMUM_WIDTH); | |
| 590 height = point.y; | |
| 591 if (!ideal) { | |
| 592 preferredWidth = width; | |
| 593 preferredHeight = height; | |
| 594 } | |
| 595 itemBounds.width = requestedWidth = width; | |
| 596 itemBounds.height = height; | |
| 597 if (control !is null) { | |
| 598 int controlWidth = width - MINIMUM_WIDTH; | |
| 599 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { | |
| 600 controlWidth -= CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; | |
| 601 } | |
| 602 control.setSize(parent.fixPoint(controlWidth, height)); | |
| 603 } | |
| 604 parent.relayout(); | |
| 605 updateChevron(); | |
| 606 } | |
| 607 /** | |
| 608 * Sets the receiver's size to the point specified by the argument. | |
| 609 * <p> | |
| 610 * Note: Attempting to set the width or height of the | |
| 611 * receiver to a negative number will cause them to be | |
| 612 * set to zero instead. | |
| 613 * </p> | |
| 614 * | |
| 615 * @param size the new size for the receiver | |
| 616 * | |
| 617 * @exception IllegalArgumentException <ul> | |
| 618 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> | |
| 619 * </ul> | |
| 620 * @exception DWTException <ul> | |
| 621 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 622 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 623 * </ul> | |
| 624 */ | |
| 625 public void setSize (Point size) { | |
| 626 checkWidget(); | |
| 627 if (size is null) error (DWT.ERROR_NULL_ARGUMENT); | |
| 628 setSize (size.x, size.y); | |
| 629 } | |
| 630 void updateChevron() { | |
| 631 if (control !is null) { | |
| 632 int width = itemBounds.width; | |
| 633 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { | |
| 634 if (chevron is null) { | |
| 635 chevron = new ToolBar (parent, DWT.FLAT | DWT.NO_FOCUS); | |
| 636 ToolItem toolItem = new ToolItem (chevron, DWT.PUSH); | |
| 637 toolItem.addListener (DWT.Selection, new class () Listener { | |
| 638 public void handleEvent (Event event) { | |
| 639 this.outer.onSelection (event); | |
| 640 } | |
| 641 }); | |
| 642 } | |
| 643 int controlHeight, currentImageHeight = 0; | |
| 644 if ((parent.style & DWT.VERTICAL) !is 0) { | |
| 645 controlHeight = control.getSize ().x; | |
| 646 if (arrowImage !is null) currentImageHeight = arrowImage.getBounds().width; | |
| 647 } else { | |
| 648 controlHeight = control.getSize ().y; | |
| 649 if (arrowImage !is null) currentImageHeight = arrowImage.getBounds().height; | |
| 650 } | |
| 651 int height = Math.min (controlHeight, itemBounds.height); | |
| 652 int imageHeight = Math.max(1, height - CHEVRON_VERTICAL_TRIM); | |
| 653 if (currentImageHeight !is imageHeight) { | |
| 654 Image image = createArrowImage (CHEVRON_IMAGE_WIDTH, imageHeight); | |
| 655 chevron.getItem (0).setImage (image); | |
| 656 if (arrowImage !is null) arrowImage.dispose (); | |
| 657 arrowImage = image; | |
| 658 } | |
| 659 chevron.setBackground (parent.getBackground()); | |
| 660 chevron.setBounds (parent.fixRectangle ( | |
| 661 itemBounds.x + width - CHEVRON_LEFT_MARGIN - CHEVRON_IMAGE_WIDTH - CHEVRON_HORIZONTAL_TRIM, | |
| 662 itemBounds.y, | |
| 663 CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM, | |
| 664 height)); | |
| 665 chevron.setVisible(true); | |
| 666 } else { | |
| 667 if (chevron !is null) { | |
| 668 chevron.setVisible(false); | |
| 669 } | |
| 670 } | |
| 671 } | |
| 672 } | |
| 673 } |