Mercurial > projects > dwt2
annotate org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/widgets/Tracker.d @ 47:65761bc28ab2
swt linux again compilable for d1.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Fri, 27 Mar 2009 11:43:53 +0100 |
| parents | f713da8bc051 |
| children | ddbfe84d86df |
| rev | line source |
|---|---|
| 25 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2008 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 | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module org.eclipse.swt.widgets.Tracker; | |
| 14 | |
| 15 import java.lang.all; | |
| 16 | |
| 17 | |
| 18 | |
| 19 import org.eclipse.swt.SWT; | |
| 20 import org.eclipse.swt.SWTException; | |
| 21 import org.eclipse.swt.events.ControlListener; | |
| 22 import org.eclipse.swt.events.KeyListener; | |
| 23 import org.eclipse.swt.graphics.Cursor; | |
| 24 import org.eclipse.swt.graphics.Point; | |
| 25 import org.eclipse.swt.graphics.Rectangle; | |
| 26 import org.eclipse.swt.internal.gtk.OS; | |
| 27 import org.eclipse.swt.widgets.Widget; | |
| 28 import org.eclipse.swt.widgets.Composite; | |
| 29 import org.eclipse.swt.widgets.Display; | |
| 30 import org.eclipse.swt.widgets.TypedListener; | |
| 31 import org.eclipse.swt.widgets.Event; | |
| 32 | |
| 33 import tango.core.Exception; | |
|
47
65761bc28ab2
swt linux again compilable for d1.
Frank Benoit <benoit@tionex.de>
parents:
25
diff
changeset
|
34 import java.lang.Thread; |
| 25 | 35 |
| 36 /** | |
| 37 * Instances of this class implement rubber banding rectangles that are | |
| 38 * drawn onto a parent <code>Composite</code> or <code>Display</code>. | |
| 39 * These rectangles can be specified to respond to mouse and key events | |
| 40 * by either moving or resizing themselves accordingly. Trackers are | |
| 41 * typically used to represent window geometries in a lightweight manner. | |
| 42 * | |
| 43 * <dl> | |
| 44 * <dt><b>Styles:</b></dt> | |
| 45 * <dd>LEFT, RIGHT, UP, DOWN, RESIZE</dd> | |
| 46 * <dt><b>Events:</b></dt> | |
| 47 * <dd>Move, Resize</dd> | |
| 48 * </dl> | |
| 49 * <p> | |
| 50 * Note: Rectangle move behavior is assumed unless RESIZE is specified. | |
| 51 * </p><p> | |
| 52 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 53 * </p> | |
| 54 * | |
| 55 * @see <a href="http://www.eclipse.org/swt/snippets/#tracker">Tracker snippets</a> | |
| 56 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
| 57 */ | |
| 58 public class Tracker : Widget { | |
| 59 Composite parent; | |
| 60 Cursor cursor; | |
| 61 GdkCursor* lastCursor; | |
| 62 GdkDrawable* window; | |
| 63 bool tracking, cancelled, grabbed, stippled; | |
| 64 Rectangle [] rectangles, proportions; | |
| 65 Rectangle bounds; | |
| 66 int cursorOrientation = SWT.NONE; | |
| 67 int oldX, oldY; | |
| 68 | |
| 69 final static int STEPSIZE_SMALL = 1; | |
| 70 final static int STEPSIZE_LARGE = 9; | |
| 71 | |
| 72 /** | |
| 73 * Constructs a new instance of this class given its parent | |
| 74 * and a style value describing its behavior and appearance. | |
| 75 * <p> | |
| 76 * The style value is either one of the style constants defined in | |
| 77 * class <code>SWT</code> which is applicable to instances of this | |
| 78 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 79 * (that is, using the <code>int</code> "|" operator) two or more | |
| 80 * of those <code>SWT</code> style constants. The class description | |
| 81 * lists the style constants that are applicable to the class. | |
| 82 * Style bits are also inherited from superclasses. | |
| 83 * </p> | |
| 84 * | |
| 85 * @param parent a widget which will be the parent of the new instance (cannot be null) | |
| 86 * @param style the style of widget to construct | |
| 87 * | |
| 88 * @exception IllegalArgumentException <ul> | |
| 89 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 90 * </ul> | |
| 91 * @exception SWTException <ul> | |
| 92 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 93 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
| 94 * </ul> | |
| 95 * | |
| 96 * @see SWT#LEFT | |
| 97 * @see SWT#RIGHT | |
| 98 * @see SWT#UP | |
| 99 * @see SWT#DOWN | |
| 100 * @see SWT#RESIZE | |
| 101 * @see Widget#checkSubclass | |
| 102 * @see Widget#getStyle | |
| 103 */ | |
| 104 public this (Composite parent, int style) { | |
| 105 super (parent, checkStyle(style)); | |
| 106 this.parent = parent; | |
| 107 } | |
| 108 | |
| 109 /** | |
| 110 * Constructs a new instance of this class given the display | |
| 111 * to create it on and a style value describing its behavior | |
| 112 * and appearance. | |
| 113 * <p> | |
| 114 * The style value is either one of the style constants defined in | |
| 115 * class <code>SWT</code> which is applicable to instances of this | |
| 116 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 117 * (that is, using the <code>int</code> "|" operator) two or more | |
| 118 * of those <code>SWT</code> style constants. The class description | |
| 119 * lists the style constants that are applicable to the class. | |
| 120 * Style bits are also inherited from superclasses. | |
| 121 * </p><p> | |
| 122 * Note: Currently, null can be passed in for the display argument. | |
| 123 * This has the effect of creating the tracker on the currently active | |
| 124 * display if there is one. If there is no current display, the | |
| 125 * tracker is created on a "default" display. <b>Passing in null as | |
| 126 * the display argument is not considered to be good coding style, | |
| 127 * and may not be supported in a future release of SWT.</b> | |
| 128 * </p> | |
| 129 * | |
| 130 * @param display the display to create the tracker on | |
| 131 * @param style the style of control to construct | |
| 132 * | |
| 133 * @exception SWTException <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 SWT#LEFT | |
| 139 * @see SWT#RIGHT | |
| 140 * @see SWT#UP | |
| 141 * @see SWT#DOWN | |
| 142 */ | |
| 143 public this (Display display, int style) { | |
| 144 if (display is null) display = Display.getCurrent (); | |
| 145 if (display is null) display = Display.getDefault (); | |
| 146 if (!display.isValidThread ()) { | |
| 147 error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
| 148 } | |
| 149 this.style = checkStyle (style); | |
| 150 this.display = display; | |
| 151 } | |
| 152 | |
| 153 /** | |
| 154 * Adds the listener to the collection of listeners who will | |
| 155 * be notified when the control is moved or resized, by sending | |
| 156 * it one of the messages defined in the <code>ControlListener</code> | |
| 157 * interface. | |
| 158 * | |
| 159 * @param listener the listener which should be notified | |
| 160 * | |
| 161 * @exception IllegalArgumentException <ul> | |
| 162 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 163 * </ul> | |
| 164 * @exception SWTException <ul> | |
| 165 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 166 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 167 * </ul> | |
| 168 * | |
| 169 * @see ControlListener | |
| 170 * @see #removeControlListener | |
| 171 */ | |
| 172 public void addControlListener(ControlListener listener) { | |
| 173 checkWidget(); | |
| 174 if (listener is null) error (SWT.ERROR_NULL_ARGUMENT); | |
| 175 TypedListener typedListener = new TypedListener (listener); | |
| 176 addListener (SWT.Resize, typedListener); | |
| 177 addListener (SWT.Move, typedListener); | |
| 178 } | |
| 179 | |
| 180 /** | |
| 181 * Adds the listener to the collection of listeners who will | |
| 182 * be notified when keys are pressed and released on the system keyboard, by sending | |
| 183 * it one of the messages defined in the <code>KeyListener</code> | |
| 184 * interface. | |
| 185 * | |
| 186 * @param listener the listener which should be notified | |
| 187 * | |
| 188 * @exception IllegalArgumentException <ul> | |
| 189 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 190 * </ul> | |
| 191 * @exception SWTException <ul> | |
| 192 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 193 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 194 * </ul> | |
| 195 * | |
| 196 * @see KeyListener | |
| 197 * @see #removeKeyListener | |
| 198 */ | |
| 199 public void addKeyListener(KeyListener listener) { | |
| 200 checkWidget(); | |
| 201 if (listener is null) error (SWT.ERROR_NULL_ARGUMENT); | |
| 202 TypedListener typedListener = new TypedListener (listener); | |
| 203 addListener(SWT.KeyUp,typedListener); | |
| 204 addListener(SWT.KeyDown,typedListener); | |
| 205 } | |
| 206 | |
| 207 Point adjustMoveCursor () { | |
| 208 if (bounds is null) return null; | |
| 209 int newX = bounds.x + bounds.width / 2; | |
| 210 int newY = bounds.y; | |
| 211 | |
| 212 Point point = display.map (parent, null, newX, newY); | |
| 213 display.setCursorLocation (point); | |
| 214 | |
| 215 /* | |
| 216 * The call to XWarpPointer does not always place the pointer on the | |
| 217 * exact location that is specified, so do a query (below) to get the | |
| 218 * actual location of the pointer after it has been moved. | |
| 219 */ | |
| 220 int actualX, actualY, state; | |
| 221 OS.gdk_window_get_pointer (cast(GdkWindow*)window, &actualX, &actualY, &state); | |
| 222 return new Point (actualX, actualY); | |
| 223 } | |
| 224 | |
| 225 Point adjustResizeCursor () { | |
| 226 if (bounds is null) return null; | |
| 227 int newX, newY; | |
| 228 | |
| 229 if ((cursorOrientation & SWT.LEFT) !is 0) { | |
| 230 newX = bounds.x; | |
| 231 } else if ((cursorOrientation & SWT.RIGHT) !is 0) { | |
| 232 newX = bounds.x + bounds.width; | |
| 233 } else { | |
| 234 newX = bounds.x + bounds.width / 2; | |
| 235 } | |
| 236 | |
| 237 if ((cursorOrientation & SWT.UP) !is 0) { | |
| 238 newY = bounds.y; | |
| 239 } else if ((cursorOrientation & SWT.DOWN) !is 0) { | |
| 240 newY = bounds.y + bounds.height; | |
| 241 } else { | |
| 242 newY = bounds.y + bounds.height / 2; | |
| 243 } | |
| 244 | |
| 245 Point point = display.map (parent, null, newX, newY); | |
| 246 display.setCursorLocation (point); | |
| 247 | |
| 248 /* | |
| 249 * The call to XWarpPointer does not always place the pointer on the | |
| 250 * exact location that is specified, so do a query (below) to get the | |
| 251 * actual location of the pointer after it has been moved. | |
| 252 */ | |
| 253 int actualX, actualY, state; | |
| 254 OS.gdk_window_get_pointer (window, &actualX, &actualY, &state); | |
| 255 return new Point (actualX, actualY ); | |
| 256 } | |
| 257 | |
| 258 | |
| 259 /** | |
| 260 * Stops displaying the tracker rectangles. Note that this is not considered | |
| 261 * to be a cancelation by the user. | |
| 262 * | |
| 263 * @exception SWTException <ul> | |
| 264 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 265 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 266 * </ul> | |
| 267 */ | |
| 268 public void close () { | |
| 269 checkWidget(); | |
| 270 tracking = false; | |
| 271 } | |
| 272 | |
| 273 static int checkStyle (int style) { | |
| 274 if ((style & (SWT.LEFT | SWT.RIGHT | SWT.UP | SWT.DOWN)) is 0) { | |
| 275 style |= SWT.LEFT | SWT.RIGHT | SWT.UP | SWT.DOWN; | |
| 276 } | |
| 277 return style; | |
| 278 } | |
| 279 | |
| 280 Rectangle computeBounds () { | |
| 281 if (rectangles.length is 0) return null; | |
| 282 int xMin = rectangles [0].x; | |
| 283 int yMin = rectangles [0].y; | |
| 284 int xMax = rectangles [0].x + rectangles [0].width; | |
| 285 int yMax = rectangles [0].y + rectangles [0].height; | |
| 286 | |
| 287 for (int i = 1; i < rectangles.length; i++) { | |
| 288 if (rectangles [i].x < xMin) xMin = rectangles [i].x; | |
| 289 if (rectangles [i].y < yMin) yMin = rectangles [i].y; | |
| 290 int rectRight = rectangles [i].x + rectangles [i].width; | |
| 291 if (rectRight > xMax) xMax = rectRight; | |
| 292 int rectBottom = rectangles [i].y + rectangles [i].height; | |
| 293 if (rectBottom > yMax) yMax = rectBottom; | |
| 294 } | |
| 295 | |
| 296 return new Rectangle (xMin, yMin, xMax - xMin, yMax - yMin); | |
| 297 } | |
| 298 | |
| 299 Rectangle [] computeProportions (Rectangle [] rects) { | |
| 300 Rectangle [] result = new Rectangle [rects.length]; | |
| 301 bounds = computeBounds (); | |
| 302 if (bounds !is null) { | |
| 303 for (int i = 0; i < rects.length; i++) { | |
| 304 int x = 0, y = 0, width = 0, height = 0; | |
| 305 if (bounds.width !is 0) { | |
| 306 x = (rects [i].x - bounds.x) * 100 / bounds.width; | |
| 307 width = rects [i].width * 100 / bounds.width; | |
| 308 } else { | |
| 309 width = 100; | |
| 310 } | |
| 311 if (bounds.height !is 0) { | |
| 312 y = (rects [i].y - bounds.y) * 100 / bounds.height; | |
| 313 height = rects [i].height * 100 / bounds.height; | |
| 314 } else { | |
| 315 height = 100; | |
| 316 } | |
| 317 result [i] = new Rectangle (x, y, width, height); | |
| 318 } | |
| 319 } | |
| 320 return result; | |
| 321 } | |
| 322 | |
| 323 void drawRectangles (Rectangle [] rects) { | |
| 324 auto window = OS.GDK_ROOT_PARENT (); | |
| 325 if (parent !is null) { | |
| 326 window = OS.GTK_WIDGET_WINDOW (parent.paintHandle()); | |
| 327 } | |
| 328 if (window is null) return; | |
| 329 auto gc = OS.gdk_gc_new (window); | |
| 330 if (gc is null) return; | |
| 331 auto colormap = OS.gdk_colormap_get_system (); | |
| 332 GdkColor color; | |
| 333 OS.gdk_color_white (colormap, &color); | |
| 334 OS.gdk_gc_set_foreground (gc, &color); | |
| 335 OS.gdk_gc_set_subwindow (gc, OS.GDK_INCLUDE_INFERIORS); | |
| 336 OS.gdk_gc_set_function (gc, OS.GDK_XOR); | |
| 337 for (int i=0; i<rects.length; i++) { | |
| 338 Rectangle rect = rects [i]; | |
| 339 int x = rect.x; | |
| 340 if (parent !is null && (parent.style & SWT.MIRRORED) !is 0) x = parent.getClientWidth () - rect.width - x; | |
| 341 OS.gdk_draw_rectangle (window, gc, 0, x, rect.y, rect.width, rect.height); | |
| 342 } | |
| 343 OS.g_object_unref (gc); | |
| 344 } | |
| 345 | |
| 346 /** | |
| 347 * Returns the bounds that are being drawn, expressed relative to the parent | |
| 348 * widget. If the parent is a <code>Display</code> then these are screen | |
| 349 * coordinates. | |
| 350 * | |
| 351 * @return the bounds of the Rectangles being drawn | |
| 352 * | |
| 353 * @exception SWTException <ul> | |
| 354 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 355 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 356 * </ul> | |
| 357 */ | |
| 358 public Rectangle [] getRectangles () { | |
| 359 checkWidget(); | |
| 360 Rectangle [] result = new Rectangle [rectangles.length]; | |
| 361 for (int i = 0; i < rectangles.length; i++) { | |
| 362 Rectangle current = rectangles [i]; | |
| 363 result [i] = new Rectangle (current.x, current.y, current.width, current.height); | |
| 364 } | |
| 365 return result; | |
| 366 } | |
| 367 | |
| 368 /** | |
| 369 * Returns <code>true</code> if the rectangles are drawn with a stippled line, <code>false</code> otherwise. | |
| 370 * | |
| 371 * @return the stippled effect of the rectangles | |
| 372 * | |
| 373 * @exception SWTException <ul> | |
| 374 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 375 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 376 * </ul> | |
| 377 */ | |
| 378 public bool getStippled () { | |
| 379 checkWidget(); | |
| 380 return stippled; | |
| 381 } | |
| 382 | |
| 383 bool grab () { | |
| 384 auto cursor = this.cursor !is null ? this.cursor.handle : null; | |
| 385 int result = OS.gdk_pointer_grab (window, false, OS.GDK_POINTER_MOTION_MASK | OS.GDK_BUTTON_RELEASE_MASK, window, cursor, OS.GDK_CURRENT_TIME); | |
| 386 return result is OS.GDK_GRAB_SUCCESS; | |
| 387 } | |
| 388 | |
| 389 override int gtk_button_release_event (GtkWidget* widget, GdkEventButton* event) { | |
| 390 return gtk_mouse (OS.GDK_BUTTON_RELEASE, widget, event); | |
| 391 } | |
| 392 | |
| 393 override int gtk_key_press_event (GtkWidget* widget, GdkEventKey* keyEvent) { | |
| 394 auto result = super.gtk_key_press_event (widget, keyEvent); | |
| 395 if (result !is 0) return result; | |
| 396 int stepSize = ((keyEvent.state & OS.GDK_CONTROL_MASK) !is 0) ? STEPSIZE_SMALL : STEPSIZE_LARGE; | |
| 397 int xChange = 0, yChange = 0; | |
| 398 switch (keyEvent.keyval) { | |
| 399 case OS.GDK_Escape: | |
| 400 cancelled = true; | |
| 401 // fallthrough | |
| 402 case OS.GDK_Return: | |
| 403 tracking = false; | |
| 404 break; | |
| 405 case OS.GDK_Left: | |
| 406 xChange = -stepSize; | |
| 407 break; | |
| 408 case OS.GDK_Right: | |
| 409 xChange = stepSize; | |
| 410 break; | |
| 411 case OS.GDK_Up: | |
| 412 yChange = -stepSize; | |
| 413 break; | |
| 414 case OS.GDK_Down: | |
| 415 yChange = stepSize; | |
| 416 break; | |
| 417 default: | |
| 418 } | |
| 419 if (xChange !is 0 || yChange !is 0) { | |
| 420 Rectangle [] oldRectangles = rectangles; | |
| 421 Rectangle [] rectsToErase = new Rectangle [rectangles.length]; | |
| 422 for (int i = 0; i < rectangles.length; i++) { | |
| 423 Rectangle current = rectangles [i]; | |
| 424 rectsToErase [i] = new Rectangle (current.x, current.y, current.width, current.height); | |
| 425 } | |
| 426 Event event = new Event (); | |
| 427 event.x = oldX + xChange; | |
| 428 event.y = oldY + yChange; | |
| 429 if (parent !is null && (parent.style & SWT.MIRRORED) !is 0) { | |
| 430 event.x = parent.getClientWidth () - event.width - event.x; | |
| 431 } | |
| 432 if ((style & SWT.RESIZE) !is 0) { | |
| 433 resizeRectangles (xChange, yChange); | |
| 434 sendEvent (SWT.Resize, event); | |
| 435 /* | |
| 436 * It is possible (but unlikely) that application | |
| 437 * code could have disposed the widget in the resize | |
| 438 * event. If this happens return false to indicate | |
| 439 * that the tracking has failed. | |
| 440 */ | |
| 441 if (isDisposed ()) { | |
| 442 cancelled = true; | |
| 443 return 1; | |
| 444 } | |
| 445 bool draw = false; | |
| 446 /* | |
| 447 * It is possible that application code could have | |
| 448 * changed the rectangles in the resize event. If this | |
| 449 * happens then only redraw the tracker if the rectangle | |
| 450 * values have changed. | |
| 451 */ | |
| 452 if (rectangles !is oldRectangles) { | |
| 453 int length = rectangles.length; | |
| 454 if (length !is rectsToErase.length) { | |
| 455 draw = true; | |
| 456 } else { | |
| 457 for (int i = 0; i < length; i++) { | |
| 458 if (rectangles [i] !=/*eq*/ rectsToErase [i]) { | |
| 459 draw = true; | |
| 460 break; | |
| 461 } | |
| 462 } | |
| 463 } | |
| 464 } else { | |
| 465 draw = true; | |
| 466 } | |
| 467 if (draw) { | |
| 468 drawRectangles (rectsToErase); | |
| 469 update (); | |
| 470 drawRectangles (rectangles); | |
| 471 } | |
| 472 Point cursorPos = adjustResizeCursor (); | |
| 473 if (cursorPos !is null) { | |
| 474 oldX = cursorPos.x; | |
| 475 oldY = cursorPos.y; | |
| 476 } | |
| 477 } else { | |
| 478 moveRectangles (xChange, yChange); | |
| 479 sendEvent (SWT.Move, event); | |
| 480 /* | |
| 481 * It is possible (but unlikely) that application | |
| 482 * code could have disposed the widget in the move | |
| 483 * event. If this happens return false to indicate | |
| 484 * that the tracking has failed. | |
| 485 */ | |
| 486 if (isDisposed ()) { | |
| 487 cancelled = true; | |
| 488 return 1; | |
| 489 } | |
| 490 bool draw = false; | |
| 491 /* | |
| 492 * It is possible that application code could have | |
| 493 * changed the rectangles in the move event. If this | |
| 494 * happens then only redraw the tracker if the rectangle | |
| 495 * values have changed. | |
| 496 */ | |
| 497 if (rectangles !is oldRectangles) { | |
| 498 int length = rectangles.length; | |
| 499 if (length !is rectsToErase.length) { | |
| 500 draw = true; | |
| 501 } else { | |
| 502 for (int i = 0; i < length; i++) { | |
| 503 if (rectangles [i] !=/*eq*/ rectsToErase [i]) { | |
| 504 draw = true; | |
| 505 break; | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 } else { | |
| 510 draw = true; | |
| 511 } | |
| 512 if (draw) { | |
| 513 drawRectangles (rectsToErase); | |
| 514 update (); | |
| 515 drawRectangles (rectangles); | |
| 516 } | |
| 517 Point cursorPos = adjustMoveCursor (); | |
| 518 if (cursorPos !is null) { | |
| 519 oldX = cursorPos.x; | |
| 520 oldY = cursorPos.y; | |
| 521 } | |
| 522 } | |
| 523 } | |
| 524 return result; | |
| 525 } | |
| 526 | |
| 527 override int gtk_motion_notify_event (GtkWidget* widget, GdkEventMotion* eventPtr) { | |
| 528 auto cursor = this.cursor !is null ? this.cursor.handle : null; | |
| 529 if (cursor !is lastCursor) { | |
| 530 ungrab (); | |
| 531 grabbed = grab (); | |
| 532 lastCursor = cursor; | |
| 533 } | |
| 534 return gtk_mouse (OS.GDK_MOTION_NOTIFY, widget, eventPtr); | |
| 535 } | |
| 536 | |
| 537 private int gtk_mouse (int eventType, GtkWidget* widget, void* eventPtr) { | |
| 538 int newX, newY; | |
| 539 OS.gdk_window_get_pointer (window, &newX, &newY, null); | |
| 540 if (oldX !is newX || oldY !is newY ) { | |
| 541 Rectangle [] oldRectangles = rectangles; | |
| 542 Rectangle [] rectsToErase = new Rectangle [rectangles.length]; | |
| 543 for (int i = 0; i < rectangles.length; i++) { | |
| 544 Rectangle current = rectangles [i]; | |
| 545 rectsToErase [i] = new Rectangle (current.x, current.y, current.width, current.height); | |
| 546 } | |
| 547 Event event = new Event (); | |
| 548 if (parent is null) { | |
| 549 event.x = newX ; | |
| 550 event.y = newY ; | |
| 551 } else { | |
| 552 Point screenCoord = display.map (parent, null, newX , newY ); | |
| 553 event.x = screenCoord.x; | |
| 554 event.y = screenCoord.y; | |
| 555 } | |
| 556 if ((style & SWT.RESIZE) !is 0) { | |
| 557 resizeRectangles (newX - oldX, newY - oldY); | |
| 558 sendEvent (SWT.Resize, event); | |
| 559 /* | |
| 560 * It is possible (but unlikely), that application | |
| 561 * code could have disposed the widget in the resize | |
| 562 * event. If this happens, return false to indicate | |
| 563 * that the tracking has failed. | |
| 564 */ | |
| 565 if (isDisposed ()) { | |
| 566 cancelled = true; | |
| 567 return 1; | |
| 568 } | |
| 569 bool draw = false; | |
| 570 /* | |
| 571 * It is possible that application code could have | |
| 572 * changed the rectangles in the resize event. If this | |
| 573 * happens then only redraw the tracker if the rectangle | |
| 574 * values have changed. | |
| 575 */ | |
| 576 if (rectangles !is oldRectangles) { | |
| 577 int length = rectangles.length; | |
| 578 if (length !is rectsToErase.length) { | |
| 579 draw = true; | |
| 580 } else { | |
| 581 for (int i = 0; i < length; i++) { | |
| 582 if (rectangles [i] !=/*eq*/ rectsToErase [i]) { | |
| 583 draw = true; | |
| 584 break; | |
| 585 } | |
| 586 } | |
| 587 } | |
| 588 } else { | |
| 589 draw = true; | |
| 590 } | |
| 591 if (draw) { | |
| 592 drawRectangles (rectsToErase); | |
| 593 update (); | |
| 594 drawRectangles (rectangles); | |
| 595 } | |
| 596 Point cursorPos = adjustResizeCursor (); | |
| 597 if (cursorPos !is null) { | |
| 598 newX = cursorPos.x; | |
| 599 newY = cursorPos.y; | |
| 600 } | |
| 601 } else { | |
| 602 moveRectangles (newX - oldX, newY - oldY); | |
| 603 sendEvent (SWT.Move, event); | |
| 604 /* | |
| 605 * It is possible (but unlikely), that application | |
| 606 * code could have disposed the widget in the move | |
| 607 * event. If this happens, return false to indicate | |
| 608 * that the tracking has failed. | |
| 609 */ | |
| 610 if (isDisposed ()) { | |
| 611 cancelled = true; | |
| 612 return 1; | |
| 613 } | |
| 614 bool draw = false; | |
| 615 /* | |
| 616 * It is possible that application code could have | |
| 617 * changed the rectangles in the move event. If this | |
| 618 * happens then only redraw the tracker if the rectangle | |
| 619 * values have changed. | |
| 620 */ | |
| 621 if (rectangles !is oldRectangles) { | |
| 622 int length = rectangles.length; | |
| 623 if (length !is rectsToErase.length) { | |
| 624 draw = true; | |
| 625 } else { | |
| 626 for (int i = 0; i < length; i++) { | |
| 627 if (rectangles [i] !=/*eq*/ rectsToErase [i]) { | |
| 628 draw = true; | |
| 629 break; | |
| 630 } | |
| 631 } | |
| 632 } | |
| 633 } else { | |
| 634 draw = true; | |
| 635 } | |
| 636 if (draw) { | |
| 637 drawRectangles (rectsToErase); | |
| 638 update (); | |
| 639 drawRectangles (rectangles); | |
| 640 } | |
| 641 } | |
| 642 oldX = newX ; | |
| 643 oldY = newY ; | |
| 644 } | |
| 645 tracking = eventType !is OS.GDK_BUTTON_RELEASE; | |
| 646 return 0; | |
| 647 } | |
| 648 | |
| 649 void moveRectangles (int xChange, int yChange) { | |
| 650 if (bounds is null) return; | |
| 651 if (xChange < 0 && ((style & SWT.LEFT) is 0)) xChange = 0; | |
| 652 if (xChange > 0 && ((style & SWT.RIGHT) is 0)) xChange = 0; | |
| 653 if (yChange < 0 && ((style & SWT.UP) is 0)) yChange = 0; | |
| 654 if (yChange > 0 && ((style & SWT.DOWN) is 0)) yChange = 0; | |
| 655 if (xChange is 0 && yChange is 0) return; | |
| 656 if (parent !is null && (parent.style & SWT.MIRRORED) !is 0) xChange *= -1; | |
| 657 bounds.x += xChange; bounds.y += yChange; | |
| 658 for (int i = 0; i < rectangles.length; i++) { | |
| 659 rectangles [i].x += xChange; | |
| 660 rectangles [i].y += yChange; | |
| 661 } | |
| 662 } | |
| 663 | |
| 664 /** | |
| 665 * Displays the Tracker rectangles for manipulation by the user. Returns when | |
| 666 * the user has either finished manipulating the rectangles or has cancelled the | |
| 667 * Tracker. | |
| 668 * | |
| 669 * @return <code>true</code> if the user did not cancel the Tracker, <code>false</code> otherwise | |
| 670 * | |
| 671 * @exception SWTException <ul> | |
| 672 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 673 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 674 * </ul> | |
| 675 */ | |
| 676 public bool open () { | |
| 677 checkWidget(); | |
| 678 window = OS.GDK_ROOT_PARENT (); | |
| 679 if (parent !is null) { | |
| 680 window = OS.GTK_WIDGET_WINDOW (parent.paintHandle()); | |
| 681 } | |
| 682 if (window is null) return false; | |
| 683 cancelled = false; | |
| 684 tracking = true; | |
| 685 update (); | |
| 686 drawRectangles (rectangles); | |
| 687 int oldX, oldY, state; | |
| 688 OS.gdk_window_get_pointer (window, &oldX, &oldY, &state); | |
| 689 | |
| 690 /* | |
| 691 * if exactly one of UP/DOWN is specified as a style then set the cursor | |
| 692 * orientation accordingly (the same is done for LEFT/RIGHT styles below) | |
| 693 */ | |
| 694 int vStyle = style & (SWT.UP | SWT.DOWN); | |
| 695 if (vStyle is SWT.UP || vStyle is SWT.DOWN) { | |
| 696 cursorOrientation |= vStyle; | |
| 697 } | |
| 698 int hStyle = style & (SWT.LEFT | SWT.RIGHT); | |
| 699 if (hStyle is SWT.LEFT || hStyle is SWT.RIGHT) { | |
| 700 cursorOrientation |= hStyle; | |
| 701 } | |
| 702 | |
| 703 int mask = OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK; | |
| 704 bool mouseDown = (state & mask) !is 0; | |
| 705 if (!mouseDown) { | |
| 706 Point cursorPos = null; | |
| 707 if ((style & SWT.RESIZE) !is 0) { | |
| 708 cursorPos = adjustResizeCursor (); | |
| 709 } else { | |
| 710 cursorPos = adjustMoveCursor (); | |
| 711 } | |
| 712 if (cursorPos !is null) { | |
| 713 oldX = cursorPos.x; | |
| 714 oldY = cursorPos.y; | |
| 715 } | |
| 716 } | |
| 717 this.oldX = oldX ; | |
| 718 this.oldY = oldY ; | |
| 719 | |
| 720 grabbed = grab (); | |
| 721 lastCursor = this.cursor !is null ? this.cursor.handle : null; | |
| 722 | |
| 723 /* Tracker behaves like a Dialog with its own OS event loop. */ | |
| 724 GdkEvent* gdkEvent; | |
| 725 while (tracking) { | |
| 726 if (parent !is null && parent.isDisposed ()) break; | |
| 727 GdkEvent* eventPtr; | |
| 728 while (true) { | |
| 729 eventPtr = OS.gdk_event_get (); | |
| 730 if (eventPtr !is null) { | |
| 731 break; | |
| 732 } else { | |
|
47
65761bc28ab2
swt linux again compilable for d1.
Frank Benoit <benoit@tionex.de>
parents:
25
diff
changeset
|
733 try { Thread.sleep(50); } catch (Exception ex) {} |
| 25 | 734 } |
| 735 } | |
| 736 gdkEvent = eventPtr; | |
| 737 auto widget = OS.gtk_get_event_widget (eventPtr); | |
| 738 switch (gdkEvent.type) { | |
| 739 case OS.GDK_MOTION_NOTIFY: gtk_motion_notify_event (widget, cast(GdkEventMotion*)eventPtr); break; | |
| 740 case OS.GDK_BUTTON_RELEASE: gtk_button_release_event (widget, cast(GdkEventButton*)eventPtr); break; | |
| 741 case OS.GDK_KEY_PRESS: gtk_key_press_event (widget, cast(GdkEventKey*)eventPtr); break; | |
| 742 case OS.GDK_KEY_RELEASE: gtk_key_release_event (widget, cast(GdkEventKey*)eventPtr); break; | |
| 743 case OS.GDK_BUTTON_PRESS: | |
| 744 case OS.GDK_2BUTTON_PRESS: | |
| 745 case OS.GDK_3BUTTON_PRESS: | |
| 746 case OS.GDK_ENTER_NOTIFY: | |
| 747 case OS.GDK_LEAVE_NOTIFY: | |
| 748 /* Do not dispatch these */ | |
| 749 break; | |
| 750 case OS.GDK_EXPOSE: | |
| 751 update (); | |
| 752 drawRectangles (rectangles); | |
| 753 OS.gtk_main_do_event (eventPtr); | |
| 754 drawRectangles (rectangles); | |
| 755 break; | |
| 756 default: | |
| 757 OS.gtk_main_do_event (eventPtr); | |
| 758 } | |
| 759 OS.gdk_event_free (eventPtr); | |
| 760 } | |
| 761 if (!isDisposed ()) { | |
| 762 update (); | |
| 763 drawRectangles (rectangles); | |
| 764 } | |
| 765 ungrab (); | |
| 766 window = null; | |
| 767 return !cancelled; | |
| 768 } | |
| 769 | |
| 770 override void releaseWidget () { | |
| 771 super.releaseWidget (); | |
| 772 parent = null; | |
| 773 rectangles = proportions = null; | |
| 774 bounds = null; | |
| 775 } | |
| 776 | |
| 777 /** | |
| 778 * Removes the listener from the collection of listeners who will | |
| 779 * be notified when the control is moved or resized. | |
| 780 * | |
| 781 * @param listener the listener which should no longer be notified | |
| 782 * | |
| 783 * @exception IllegalArgumentException <ul> | |
| 784 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 785 * </ul> | |
| 786 * @exception SWTException <ul> | |
| 787 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 788 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 789 * </ul> | |
| 790 * | |
| 791 * @see ControlListener | |
| 792 * @see #addControlListener | |
| 793 */ | |
| 794 public void removeControlListener (ControlListener listener) { | |
| 795 checkWidget(); | |
| 796 if (listener is null) error (SWT.ERROR_NULL_ARGUMENT); | |
| 797 if (eventTable is null) return; | |
| 798 eventTable.unhook (SWT.Resize, listener); | |
| 799 eventTable.unhook (SWT.Move, listener); | |
| 800 } | |
| 801 | |
| 802 /** | |
| 803 * Removes the listener from the collection of listeners who will | |
| 804 * be notified when keys are pressed and released on the system keyboard. | |
| 805 * | |
| 806 * @param listener the listener which should no longer be notified | |
| 807 * | |
| 808 * @exception IllegalArgumentException <ul> | |
| 809 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 810 * </ul> | |
| 811 * @exception SWTException <ul> | |
| 812 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 813 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 814 * </ul> | |
| 815 * | |
| 816 * @see KeyListener | |
| 817 * @see #addKeyListener | |
| 818 */ | |
| 819 public void removeKeyListener(KeyListener listener) { | |
| 820 checkWidget(); | |
| 821 if (listener is null) error (SWT.ERROR_NULL_ARGUMENT); | |
| 822 if (eventTable is null) return; | |
| 823 eventTable.unhook (SWT.KeyUp, listener); | |
| 824 eventTable.unhook (SWT.KeyDown, listener); | |
| 825 } | |
| 826 | |
| 827 void resizeRectangles (int xChange, int yChange) { | |
| 828 if (bounds is null) return; | |
| 829 if (parent !is null && (parent.style & SWT.MIRRORED) !is 0) xChange *= -1; | |
| 830 /* | |
| 831 * If the cursor orientation has not been set in the orientation of | |
| 832 * this change then try to set it here. | |
| 833 */ | |
| 834 if (xChange < 0 && ((style & SWT.LEFT) !is 0) && ((cursorOrientation & SWT.RIGHT) is 0)) { | |
| 835 cursorOrientation |= SWT.LEFT; | |
| 836 } | |
| 837 if (xChange > 0 && ((style & SWT.RIGHT) !is 0) && ((cursorOrientation & SWT.LEFT) is 0)) { | |
| 838 cursorOrientation |= SWT.RIGHT; | |
| 839 } | |
| 840 if (yChange < 0 && ((style & SWT.UP) !is 0) && ((cursorOrientation & SWT.DOWN) is 0)) { | |
| 841 cursorOrientation |= SWT.UP; | |
| 842 } | |
| 843 if (yChange > 0 && ((style & SWT.DOWN) !is 0) && ((cursorOrientation & SWT.UP) is 0)) { | |
| 844 cursorOrientation |= SWT.DOWN; | |
| 845 } | |
| 846 | |
| 847 /* | |
| 848 * If the bounds will flip about the x or y axis then apply the adjustment | |
| 849 * up to the axis (ie.- where bounds width/height becomes 0), change the | |
| 850 * cursor's orientation accordingly, and flip each Rectangle's origin (only | |
| 851 * necessary for > 1 Rectangles) | |
| 852 */ | |
| 853 if ((cursorOrientation & SWT.LEFT) !is 0) { | |
| 854 if (xChange > bounds.width) { | |
| 855 if ((style & SWT.RIGHT) is 0) return; | |
| 856 cursorOrientation |= SWT.RIGHT; | |
| 857 cursorOrientation &= ~SWT.LEFT; | |
| 858 bounds.x += bounds.width; | |
| 859 xChange -= bounds.width; | |
| 860 bounds.width = 0; | |
| 861 if (proportions.length > 1) { | |
| 862 for (int i = 0; i < proportions.length; i++) { | |
| 863 Rectangle proportion = proportions [i]; | |
| 864 proportion.x = 100 - proportion.x - proportion.width; | |
| 865 } | |
| 866 } | |
| 867 } | |
| 868 } else if ((cursorOrientation & SWT.RIGHT) !is 0) { | |
| 869 if (bounds.width < -xChange) { | |
| 870 if ((style & SWT.LEFT) is 0) return; | |
| 871 cursorOrientation |= SWT.LEFT; | |
| 872 cursorOrientation &= ~SWT.RIGHT; | |
| 873 xChange += bounds.width; | |
| 874 bounds.width = 0; | |
| 875 if (proportions.length > 1) { | |
| 876 for (int i = 0; i < proportions.length; i++) { | |
| 877 Rectangle proportion = proportions [i]; | |
| 878 proportion.x = 100 - proportion.x - proportion.width; | |
| 879 } | |
| 880 } | |
| 881 } | |
| 882 } | |
| 883 if ((cursorOrientation & SWT.UP) !is 0) { | |
| 884 if (yChange > bounds.height) { | |
| 885 if ((style & SWT.DOWN) is 0) return; | |
| 886 cursorOrientation |= SWT.DOWN; | |
| 887 cursorOrientation &= ~SWT.UP; | |
| 888 bounds.y += bounds.height; | |
| 889 yChange -= bounds.height; | |
| 890 bounds.height = 0; | |
| 891 if (proportions.length > 1) { | |
| 892 for (int i = 0; i < proportions.length; i++) { | |
| 893 Rectangle proportion = proportions [i]; | |
| 894 proportion.y = 100 - proportion.y - proportion.height; | |
| 895 } | |
| 896 } | |
| 897 } | |
| 898 } else if ((cursorOrientation & SWT.DOWN) !is 0) { | |
| 899 if (bounds.height < -yChange) { | |
| 900 if ((style & SWT.UP) is 0) return; | |
| 901 cursorOrientation |= SWT.UP; | |
| 902 cursorOrientation &= ~SWT.DOWN; | |
| 903 yChange += bounds.height; | |
| 904 bounds.height = 0; | |
| 905 if (proportions.length > 1) { | |
| 906 for (int i = 0; i < proportions.length; i++) { | |
| 907 Rectangle proportion = proportions [i]; | |
| 908 proportion.y = 100 - proportion.y - proportion.height; | |
| 909 } | |
| 910 } | |
| 911 } | |
| 912 } | |
| 913 | |
| 914 // apply the bounds adjustment | |
| 915 if ((cursorOrientation & SWT.LEFT) !is 0) { | |
| 916 bounds.x += xChange; | |
| 917 bounds.width -= xChange; | |
| 918 } else if ((cursorOrientation & SWT.RIGHT) !is 0) { | |
| 919 bounds.width += xChange; | |
| 920 } | |
| 921 if ((cursorOrientation & SWT.UP) !is 0) { | |
| 922 bounds.y += yChange; | |
| 923 bounds.height -= yChange; | |
| 924 } else if ((cursorOrientation & SWT.DOWN) !is 0) { | |
| 925 bounds.height += yChange; | |
| 926 } | |
| 927 | |
| 928 Rectangle [] newRects = new Rectangle [rectangles.length]; | |
| 929 for (int i = 0; i < rectangles.length; i++) { | |
| 930 Rectangle proportion = proportions[i]; | |
| 931 newRects[i] = new Rectangle ( | |
| 932 proportion.x * bounds.width / 100 + bounds.x, | |
| 933 proportion.y * bounds.height / 100 + bounds.y, | |
| 934 proportion.width * bounds.width / 100, | |
| 935 proportion.height * bounds.height / 100); | |
| 936 } | |
| 937 rectangles = newRects; | |
| 938 } | |
| 939 | |
| 940 /** | |
| 941 * Sets the <code>Cursor</code> of the Tracker. If this cursor is <code>null</code> | |
| 942 * then the cursor reverts to the default. | |
| 943 * | |
| 944 * @param newCursor the new <code>Cursor</code> to display | |
| 945 * | |
| 946 * @exception SWTException <ul> | |
| 947 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 948 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 949 * </ul> | |
| 950 */ | |
| 951 public void setCursor (Cursor value) { | |
| 952 checkWidget (); | |
| 953 cursor = value; | |
| 954 } | |
| 955 | |
| 956 /** | |
| 957 * Specifies the rectangles that should be drawn, expressed relative to the parent | |
| 958 * widget. If the parent is a Display then these are screen coordinates. | |
| 959 * | |
| 960 * @param rectangles the bounds of the rectangles to be drawn | |
| 961 * | |
| 962 * @exception IllegalArgumentException <ul> | |
| 963 * <li>ERROR_NULL_ARGUMENT - if the set of rectangles contains a null rectangle</li> | |
| 964 * </ul> | |
| 965 * @exception SWTException <ul> | |
| 966 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 967 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 968 * </ul> | |
| 969 */ | |
| 970 public void setRectangles (Rectangle [] rectangles) { | |
| 971 checkWidget(); | |
| 972 // SWT extension: allow null for zero length string | |
| 973 //if (rectangles is null) error (SWT.ERROR_NULL_ARGUMENT); | |
| 974 int length = rectangles.length; | |
| 975 this.rectangles = new Rectangle [length]; | |
| 976 for (int i = 0; i < length; i++) { | |
| 977 Rectangle current = rectangles [i]; | |
| 978 if (current is null) error (SWT.ERROR_NULL_ARGUMENT); | |
| 979 this.rectangles [i] = new Rectangle (current.x, current.y, current.width, current.height); | |
| 980 } | |
| 981 proportions = computeProportions (rectangles); | |
| 982 } | |
| 983 | |
| 984 /** | |
| 985 * Changes the appearance of the line used to draw the rectangles. | |
| 986 * | |
| 987 * @param stippled <code>true</code> if rectangle should appear stippled | |
| 988 * | |
| 989 * @exception SWTException <ul> | |
| 990 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 991 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 992 * </ul> | |
| 993 */ | |
| 994 public void setStippled (bool stippled) { | |
| 995 checkWidget(); | |
| 996 this.stippled = stippled; | |
| 997 } | |
| 998 | |
| 999 void ungrab () { | |
| 1000 if (grabbed) OS.gdk_pointer_ungrab (OS.GDK_CURRENT_TIME); | |
| 1001 } | |
| 1002 | |
| 1003 void update () { | |
| 1004 if (parent !is null) { | |
| 1005 if (parent.isDisposed ()) return; | |
| 1006 parent.getShell ().update (); | |
| 1007 } else { | |
| 1008 display.update (); | |
| 1009 } | |
| 1010 } | |
| 1011 | |
| 1012 } |