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48e27807 KL |
1 | /** |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * License: LGPLv3 or later | |
5 | * | |
6 | * This module is licensed under the GNU Lesser General Public License | |
7 | * Version 3. Please see the file "COPYING" in this directory for more | |
8 | * information about the GNU Lesser General Public License Version 3. | |
9 | * | |
10 | * Copyright (C) 2015 Kevin Lamonte | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public License | |
14 | * as published by the Free Software Foundation; either version 3 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with this program; if not, see | |
24 | * http://www.gnu.org/licenses/, or write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
26 | * 02110-1301 USA | |
27 | * | |
28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
29 | * @version 1 | |
30 | */ | |
31 | package jexer; | |
32 | ||
33 | import java.util.List; | |
34 | import java.util.LinkedList; | |
35 | ||
36 | import jexer.event.TCommandEvent; | |
37 | import jexer.event.TInputEvent; | |
38 | import jexer.event.TKeypressEvent; | |
39 | import jexer.event.TMenuEvent; | |
40 | import jexer.event.TMouseEvent; | |
41 | import jexer.event.TResizeEvent; | |
42 | import jexer.io.Screen; | |
43 | import static jexer.TKeypress.*; | |
44 | ||
45 | /** | |
46 | * TWidget is the base class of all objects that can be drawn on screen or | |
47 | * handle user input events. | |
48 | */ | |
49 | public abstract class TWidget { | |
50 | ||
51 | /** | |
52 | * Every widget has a parent widget that it may be "contained" in. For | |
53 | * example, a TWindow might contain several TTextFields, or a TComboBox | |
54 | * may contain a TScrollBar. | |
55 | */ | |
56 | protected TWidget parent = null; | |
57 | ||
58 | /** | |
59 | * Child widgets that this widget contains. | |
60 | */ | |
61 | private List<TWidget> children; | |
62 | ||
63 | /** | |
64 | * The currently active child widget that will receive keypress events. | |
65 | */ | |
66 | private TWidget activeChild = null; | |
67 | ||
68 | /** | |
69 | * If true, this widget will receive events. | |
70 | */ | |
71 | protected boolean active = false; | |
72 | ||
73 | /** | |
74 | * The window that this widget draws to. | |
75 | */ | |
76 | protected TWindow window = null; | |
77 | ||
78 | /** | |
79 | * Absolute X position of the top-left corner. | |
80 | */ | |
81 | protected int x = 0; | |
82 | ||
83 | /** | |
84 | * Absolute Y position of the top-left corner. | |
85 | */ | |
86 | protected int y = 0; | |
87 | ||
88 | /** | |
89 | * Width. | |
90 | */ | |
91 | protected int width = 0; | |
92 | ||
93 | /** | |
94 | * Height. | |
95 | */ | |
96 | protected int height = 0; | |
97 | ||
98 | /** | |
99 | * My tab order inside a window or containing widget. | |
100 | */ | |
101 | private int tabOrder = 0; | |
102 | ||
103 | /** | |
104 | * If true, this widget can be tabbed to or receive events. | |
105 | */ | |
106 | private boolean enabled = true; | |
107 | ||
108 | /** | |
109 | * Get enabled flag. | |
110 | * | |
111 | * @return if true, this widget can be tabbed to or receive events | |
112 | */ | |
113 | public final boolean getEnabled() { | |
114 | return enabled; | |
115 | } | |
116 | ||
117 | /** | |
118 | * Set enabled flag. | |
119 | * | |
120 | * @param enabled if true, this widget can be tabbed to or receive events | |
121 | */ | |
122 | public final void setEnabled(final boolean enabled) { | |
123 | this.enabled = enabled; | |
124 | /* | |
125 | ||
126 | // TODO: get this working after scrollers are going again | |
127 | ||
128 | if (enabled == false) { | |
129 | active = false; | |
130 | // See if there are any active siblings to switch to | |
131 | boolean foundSibling = false; | |
132 | if (parent !is null) { | |
133 | foreach (w; parent.children) { | |
134 | if ((w.enabled) && | |
135 | (!cast(THScroller)this) && | |
136 | (!cast(TVScroller)this) | |
137 | ) { | |
138 | parent.activate(w); | |
139 | foundSibling = true; | |
140 | break; | |
141 | } | |
142 | } | |
143 | if (!foundSibling) { | |
144 | parent.activeChild = null; | |
145 | } | |
146 | } | |
147 | } | |
148 | */ | |
149 | } | |
150 | ||
151 | /** | |
152 | * If true, this widget has a cursor. | |
153 | */ | |
154 | private boolean hasCursor = false; | |
155 | ||
a06459bd KL |
156 | /** |
157 | * See if this widget has a visible cursor. | |
158 | * | |
159 | * @return if true, this widget has a visible cursor | |
160 | */ | |
161 | public final boolean visibleCursor() { | |
162 | return hasCursor; | |
163 | } | |
164 | ||
48e27807 KL |
165 | /** |
166 | * Cursor column position in relative coordinates. | |
167 | */ | |
168 | private int cursorX = 0; | |
169 | ||
170 | /** | |
171 | * Cursor row position in relative coordinates. | |
172 | */ | |
173 | private int cursorY = 0; | |
174 | ||
175 | /** | |
176 | * Comparison operator sorts on tabOrder. | |
177 | * | |
178 | * @param that another TWidget instance | |
179 | * @return difference between this.tabOrder and that.tabOrder | |
180 | */ | |
181 | public final int compare(final TWidget that) { | |
182 | return (this.tabOrder - that.tabOrder); | |
183 | } | |
184 | ||
185 | /** | |
186 | * See if this widget should render with the active color. | |
187 | * | |
188 | * @return true if this widget is active and all of its parents are | |
189 | * active. | |
190 | */ | |
191 | public final boolean getAbsoluteActive() { | |
192 | if (parent == this) { | |
193 | return active; | |
194 | } | |
195 | return (active && parent.getAbsoluteActive()); | |
196 | } | |
197 | ||
198 | /** | |
199 | * Returns the cursor X position. | |
200 | * | |
201 | * @return absolute screen column number for the cursor's X position | |
202 | */ | |
203 | public final int getCursorAbsoluteX() { | |
204 | assert (hasCursor); | |
205 | return getAbsoluteX() + cursorX; | |
206 | } | |
207 | ||
208 | /** | |
209 | * Returns the cursor Y position. | |
210 | * | |
211 | * @return absolute screen row number for the cursor's Y position | |
212 | */ | |
213 | public final int getCursorAbsoluteY() { | |
214 | assert (hasCursor); | |
215 | return getAbsoluteY() + cursorY; | |
216 | } | |
217 | ||
218 | /** | |
219 | * Compute my absolute X position as the sum of my X plus all my parent's | |
220 | * X's. | |
221 | * | |
222 | * @return absolute screen column number for my X position | |
223 | */ | |
224 | public final int getAbsoluteX() { | |
225 | assert (parent != null); | |
226 | if (parent == this) { | |
227 | return x; | |
228 | } | |
229 | if ((parent instanceof TWindow) && !(parent instanceof TMenu)) { | |
230 | // Widgets on a TWindow have (0,0) as their top-left, but this is | |
231 | // actually the TWindow's (1,1). | |
232 | return parent.getAbsoluteX() + x + 1; | |
233 | } | |
234 | return parent.getAbsoluteX() + x; | |
235 | } | |
236 | ||
237 | /** | |
238 | * Compute my absolute Y position as the sum of my Y plus all my parent's | |
239 | * Y's. | |
240 | * | |
241 | * @return absolute screen row number for my Y position | |
242 | */ | |
243 | public final int getAbsoluteY() { | |
244 | assert (parent != null); | |
245 | if (parent == this) { | |
246 | return y; | |
247 | } | |
248 | if ((parent instanceof TWindow) && !(parent instanceof TMenu)) { | |
249 | // Widgets on a TWindow have (0,0) as their top-left, but this is | |
250 | // actually the TWindow's (1,1). | |
251 | return parent.getAbsoluteY() + y + 1; | |
252 | } | |
253 | return parent.getAbsoluteY() + y; | |
254 | } | |
255 | ||
256 | /** | |
257 | * Draw my specific widget. When called, the screen rectangle I draw | |
258 | * into is already setup (offset and clipping). | |
259 | */ | |
260 | public void draw() { | |
261 | // Default widget draws nothing. | |
262 | } | |
263 | ||
264 | /** | |
265 | * Called by parent to render to TWindow. | |
266 | */ | |
267 | public final void drawChildren() { | |
268 | // Set my clipping rectangle | |
269 | assert (window != null); | |
270 | assert (window.getScreen() != null); | |
271 | Screen screen = window.getScreen(); | |
272 | ||
273 | screen.setClipRight(width); | |
274 | screen.setClipBottom(height); | |
275 | ||
276 | int absoluteRightEdge = window.getAbsoluteX() + screen.getWidth(); | |
277 | int absoluteBottomEdge = window.getAbsoluteY() + screen.getHeight(); | |
278 | if (!(this instanceof TWindow) && !(this instanceof TVScroller)) { | |
279 | absoluteRightEdge -= 1; | |
280 | } | |
281 | if (!(this instanceof TWindow) && !(this instanceof THScroller)) { | |
282 | absoluteBottomEdge -= 1; | |
283 | } | |
284 | int myRightEdge = getAbsoluteX() + width; | |
285 | int myBottomEdge = getAbsoluteY() + height; | |
286 | if (getAbsoluteX() > absoluteRightEdge) { | |
287 | // I am offscreen | |
288 | screen.setClipRight(0); | |
289 | } else if (myRightEdge > absoluteRightEdge) { | |
290 | screen.setClipRight(screen.getClipRight() | |
291 | - myRightEdge - absoluteRightEdge); | |
292 | } | |
293 | if (getAbsoluteY() > absoluteBottomEdge) { | |
294 | // I am offscreen | |
295 | screen.setClipBottom(0); | |
296 | } else if (myBottomEdge > absoluteBottomEdge) { | |
297 | screen.setClipBottom(screen.getClipBottom() | |
298 | - myBottomEdge - absoluteBottomEdge); | |
299 | } | |
300 | ||
301 | // Set my offset | |
302 | screen.setOffsetX(getAbsoluteX()); | |
303 | screen.setOffsetY(getAbsoluteY()); | |
304 | ||
305 | // Draw me | |
306 | draw(); | |
307 | ||
308 | // Continue down the chain | |
309 | for (TWidget widget: children) { | |
310 | widget.drawChildren(); | |
311 | } | |
312 | } | |
313 | ||
314 | /** | |
315 | * Subclasses need this constructor to setup children. | |
316 | */ | |
317 | protected TWidget() { | |
318 | children = new LinkedList<TWidget>(); | |
319 | } | |
320 | ||
321 | /** | |
322 | * Protected constructor. | |
323 | * | |
324 | * @param parent parent widget | |
325 | */ | |
326 | protected TWidget(final TWidget parent) { | |
327 | this.parent = parent; | |
328 | this.window = parent.window; | |
329 | ||
330 | parent.addChild(this); | |
331 | } | |
332 | ||
333 | /** | |
334 | * Add a child widget to my list of children. We set its tabOrder to 0 | |
335 | * and increment the tabOrder of all other children. | |
336 | * | |
337 | * @param child TWidget to add | |
338 | */ | |
339 | private void addChild(final TWidget child) { | |
340 | children.add(child); | |
341 | ||
342 | if ((child.enabled) | |
343 | && !(child instanceof THScroller) | |
344 | && !(child instanceof TVScroller) | |
345 | ) { | |
346 | for (TWidget widget: children) { | |
347 | widget.active = false; | |
348 | } | |
349 | child.active = true; | |
350 | activeChild = child; | |
351 | } | |
352 | for (int i = 0; i < children.size(); i++) { | |
353 | children.get(i).tabOrder = i; | |
354 | } | |
355 | } | |
356 | ||
357 | /** | |
358 | * Switch the active child. | |
359 | * | |
360 | * @param child TWidget to activate | |
361 | */ | |
362 | public final void activate(final TWidget child) { | |
363 | assert (child.enabled); | |
364 | if ((child instanceof THScroller) | |
365 | || (child instanceof TVScroller) | |
366 | ) { | |
367 | return; | |
368 | } | |
369 | ||
370 | if (child != activeChild) { | |
371 | if (activeChild != null) { | |
372 | activeChild.active = false; | |
373 | } | |
374 | child.active = true; | |
375 | activeChild = child; | |
376 | } | |
377 | } | |
378 | ||
379 | /** | |
380 | * Switch the active child. | |
381 | * | |
382 | * @param tabOrder tabOrder of the child to activate. If that child | |
383 | * isn't enabled, then the next enabled child will be activated. | |
384 | */ | |
385 | public final void activate(final int tabOrder) { | |
386 | if (activeChild == null) { | |
387 | return; | |
388 | } | |
389 | TWidget child = null; | |
390 | for (TWidget widget: children) { | |
391 | if ((widget.enabled) | |
392 | && !(widget instanceof THScroller) | |
393 | && !(widget instanceof TVScroller) | |
394 | && (widget.tabOrder >= tabOrder) | |
395 | ) { | |
396 | child = widget; | |
397 | break; | |
398 | } | |
399 | } | |
400 | if ((child != null) && (child != activeChild)) { | |
401 | activeChild.active = false; | |
402 | assert (child.enabled); | |
403 | child.active = true; | |
404 | activeChild = child; | |
405 | } | |
406 | } | |
407 | ||
408 | /** | |
409 | * Switch the active widget with the next in the tab order. | |
410 | * | |
411 | * @param forward if true, then switch to the next enabled widget in the | |
412 | * list, otherwise switch to the previous enabled widget in the list | |
413 | */ | |
414 | public final void switchWidget(final boolean forward) { | |
415 | ||
416 | // Only switch if there are multiple enabled widgets | |
417 | if ((children.size() < 2) || (activeChild == null)) { | |
418 | return; | |
419 | } | |
420 | ||
421 | int tabOrder = activeChild.tabOrder; | |
422 | do { | |
423 | if (forward) { | |
424 | tabOrder++; | |
425 | } else { | |
426 | tabOrder--; | |
427 | } | |
428 | if (tabOrder < 0) { | |
429 | ||
430 | // If at the end, pass the switch to my parent. | |
431 | if ((!forward) && (parent != this)) { | |
432 | parent.switchWidget(forward); | |
433 | return; | |
434 | } | |
435 | ||
436 | tabOrder = children.size() - 1; | |
437 | } else if (tabOrder == children.size()) { | |
438 | // If at the end, pass the switch to my parent. | |
439 | if ((forward) && (parent != this)) { | |
440 | parent.switchWidget(forward); | |
441 | return; | |
442 | } | |
443 | ||
444 | tabOrder = 0; | |
445 | } | |
446 | if (activeChild.tabOrder == tabOrder) { | |
447 | // We wrapped around | |
448 | break; | |
449 | } | |
450 | } while ((!children.get(tabOrder).enabled) | |
451 | && !(children.get(tabOrder) instanceof THScroller) | |
452 | && !(children.get(tabOrder) instanceof TVScroller)); | |
453 | ||
454 | assert (children.get(tabOrder).enabled); | |
455 | ||
456 | activeChild.active = false; | |
457 | children.get(tabOrder).active = true; | |
458 | activeChild = children.get(tabOrder); | |
459 | ||
460 | // Refresh | |
461 | window.getApplication().setRepaint(); | |
462 | } | |
463 | ||
464 | /** | |
465 | * Returns my active widget. | |
466 | * | |
467 | * @return widget that is active, or this if no children | |
468 | */ | |
469 | public final TWidget getActiveChild() { | |
470 | if ((this instanceof THScroller) | |
471 | || (this instanceof TVScroller) | |
472 | ) { | |
473 | return parent; | |
474 | } | |
475 | ||
476 | for (TWidget widget: children) { | |
477 | if (widget.active) { | |
478 | return widget.getActiveChild(); | |
479 | } | |
480 | } | |
481 | // No active children, return me | |
482 | return this; | |
483 | } | |
484 | ||
485 | /** | |
486 | * Method that subclasses can override to handle keystrokes. | |
487 | * | |
488 | * @param keypress keystroke event | |
489 | */ | |
490 | public void onKeypress(final TKeypressEvent keypress) { | |
491 | ||
492 | if ((children.size() == 0) | |
493 | // || (cast(TTreeView)this) | |
494 | // || (cast(TText)this) | |
495 | ) { | |
496 | ||
497 | // Defaults: | |
498 | // tab / shift-tab - switch to next/previous widget | |
499 | // right-arrow or down-arrow: same as tab | |
500 | // left-arrow or up-arrow: same as shift-tab | |
501 | if ((keypress.equals(kbTab)) | |
502 | || (keypress.equals(kbRight)) | |
503 | || (keypress.equals(kbDown)) | |
504 | ) { | |
505 | parent.switchWidget(true); | |
506 | return; | |
507 | } else if ((keypress.equals(kbShiftTab)) | |
508 | || (keypress.equals(kbBackTab)) | |
509 | || (keypress.equals(kbLeft)) | |
510 | || (keypress.equals(kbUp)) | |
511 | ) { | |
512 | parent.switchWidget(false); | |
513 | return; | |
514 | } | |
515 | } | |
516 | ||
517 | // If I have any buttons on me AND this is an Alt-key that matches | |
518 | // its mnemonic, send it an Enter keystroke | |
519 | for (TWidget widget: children) { | |
520 | /* | |
521 | TODO | |
522 | ||
523 | if (TButton button = cast(TButton)w) { | |
524 | if (button.enabled && | |
525 | !keypress.key.isKey && | |
526 | keypress.key.alt && | |
527 | !keypress.key.ctrl && | |
528 | (toLowercase(button.mnemonic.shortcut) == toLowercase(keypress.key.ch))) { | |
529 | ||
530 | w.handleEvent(new TKeypressEvent(kbEnter)); | |
531 | return; | |
532 | } | |
533 | } | |
534 | */ | |
535 | } | |
536 | ||
537 | // Dispatch the keypress to an active widget | |
538 | for (TWidget widget: children) { | |
539 | if (widget.active) { | |
540 | window.getApplication().setRepaint(); | |
541 | widget.handleEvent(keypress); | |
542 | return; | |
543 | } | |
544 | } | |
545 | } | |
546 | ||
547 | /** | |
548 | * Method that subclasses can override to handle mouse button presses. | |
549 | * | |
550 | * @param mouse mouse button event | |
551 | */ | |
552 | public void onMouseDown(final TMouseEvent mouse) { | |
553 | // Default: do nothing, pass to children instead | |
554 | for (TWidget widget: children) { | |
555 | if (widget.mouseWouldHit(mouse)) { | |
556 | // Dispatch to this child, also activate it | |
557 | activate(widget); | |
558 | ||
559 | // Set x and y relative to the child's coordinates | |
560 | mouse.setX(mouse.getAbsoluteX() - widget.getAbsoluteX()); | |
561 | mouse.setY(mouse.getAbsoluteY() - widget.getAbsoluteY()); | |
562 | widget.handleEvent(mouse); | |
563 | return; | |
564 | } | |
565 | } | |
566 | } | |
567 | ||
568 | /** | |
569 | * Method that subclasses can override to handle mouse button releases. | |
570 | * | |
571 | * @param mouse mouse button event | |
572 | */ | |
573 | public void onMouseUp(final TMouseEvent mouse) { | |
574 | // Default: do nothing, pass to children instead | |
575 | for (TWidget widget: children) { | |
576 | if (widget.mouseWouldHit(mouse)) { | |
577 | // Dispatch to this child, also activate it | |
578 | activate(widget); | |
579 | ||
580 | // Set x and y relative to the child's coordinates | |
581 | mouse.setX(mouse.getAbsoluteX() - widget.getAbsoluteX()); | |
582 | mouse.setY(mouse.getAbsoluteY() - widget.getAbsoluteY()); | |
583 | widget.handleEvent(mouse); | |
584 | return; | |
585 | } | |
586 | } | |
587 | } | |
588 | ||
589 | /** | |
590 | * Method that subclasses can override to handle mouse movements. | |
591 | * | |
592 | * @param mouse mouse motion event | |
593 | */ | |
594 | public void onMouseMotion(final TMouseEvent mouse) { | |
595 | // Default: do nothing, pass it on to ALL of my children. This way | |
596 | // the children can see the mouse "leaving" their area. | |
597 | for (TWidget widget: children) { | |
598 | // Set x and y relative to the child's coordinates | |
599 | mouse.setX(mouse.getAbsoluteX() - widget.getAbsoluteX()); | |
600 | mouse.setY(mouse.getAbsoluteY() - widget.getAbsoluteY()); | |
601 | widget.handleEvent(mouse); | |
602 | } | |
603 | } | |
604 | ||
605 | /** | |
606 | * Method that subclasses can override to handle window/screen resize | |
607 | * events. | |
608 | * | |
609 | * @param resize resize event | |
610 | */ | |
611 | public void onResize(final TResizeEvent resize) { | |
612 | // Default: do nothing, pass to children instead | |
613 | for (TWidget widget: children) { | |
614 | widget.onResize(resize); | |
615 | } | |
616 | } | |
617 | ||
618 | /** | |
619 | * Method that subclasses can override to handle posted command events. | |
620 | * | |
621 | * @param command command event | |
622 | */ | |
623 | public void onCommand(final TCommandEvent command) { | |
624 | // Default: do nothing, pass to children instead | |
625 | for (TWidget widget: children) { | |
626 | widget.onCommand(command); | |
627 | } | |
628 | } | |
629 | ||
630 | /** | |
631 | * Method that subclasses can override to handle menu or posted menu | |
632 | * events. | |
633 | * | |
634 | * @param menu menu event | |
635 | */ | |
636 | public void onMenu(final TMenuEvent menu) { | |
637 | // Default: do nothing, pass to children instead | |
638 | for (TWidget widget: children) { | |
639 | widget.onMenu(menu); | |
640 | } | |
641 | } | |
642 | ||
643 | /** | |
644 | * Method that subclasses can override to do processing when the UI is | |
645 | * idle. | |
646 | */ | |
647 | public void onIdle() { | |
648 | // Default: do nothing, pass to children instead | |
649 | for (TWidget widget: children) { | |
650 | widget.onIdle(); | |
651 | } | |
652 | } | |
653 | ||
654 | /** | |
655 | * Consume event. Subclasses that want to intercept all events in one go | |
656 | * can override this method. | |
657 | * | |
658 | * @param event keyboard, mouse, resize, command, or menu event | |
659 | */ | |
660 | public void handleEvent(final TInputEvent event) { | |
661 | // System.err.printf("TWidget (%s) event: %s\n", this.getClass().getName(), | |
662 | // event); | |
663 | ||
664 | if (!enabled) { | |
665 | // Discard event | |
666 | // System.err.println(" -- discard --"); | |
667 | return; | |
668 | } | |
669 | ||
670 | if (event instanceof TKeypressEvent) { | |
671 | onKeypress((TKeypressEvent) event); | |
672 | } else if (event instanceof TMouseEvent) { | |
673 | ||
674 | TMouseEvent mouse = (TMouseEvent) event; | |
675 | ||
676 | switch (mouse.getType()) { | |
677 | ||
678 | case MOUSE_DOWN: | |
679 | onMouseDown(mouse); | |
680 | break; | |
681 | ||
682 | case MOUSE_UP: | |
683 | onMouseUp(mouse); | |
684 | break; | |
685 | ||
686 | case MOUSE_MOTION: | |
687 | onMouseMotion(mouse); | |
688 | break; | |
689 | ||
690 | default: | |
691 | throw new IllegalArgumentException("Invalid mouse event type: " | |
692 | + mouse.getType()); | |
693 | } | |
694 | } else if (event instanceof TResizeEvent) { | |
695 | onResize((TResizeEvent) event); | |
696 | } else if (event instanceof TCommandEvent) { | |
697 | onCommand((TCommandEvent) event); | |
698 | } else if (event instanceof TMenuEvent) { | |
699 | onMenu((TMenuEvent) event); | |
700 | } | |
701 | ||
702 | // Do nothing else | |
703 | return; | |
704 | } | |
705 | ||
706 | /** | |
707 | * Check if a mouse press/release event coordinate is contained in this | |
708 | * widget. | |
709 | * | |
710 | * @param mouse a mouse-based event | |
711 | * @return whether or not a mouse click would be sent to this widget | |
712 | */ | |
713 | public final boolean mouseWouldHit(final TMouseEvent mouse) { | |
714 | ||
715 | if (!enabled) { | |
716 | return false; | |
717 | } | |
718 | ||
719 | if ((mouse.getAbsoluteX() >= getAbsoluteX()) | |
720 | && (mouse.getAbsoluteX() < getAbsoluteX() + width) | |
721 | && (mouse.getAbsoluteY() >= getAbsoluteY()) | |
722 | && (mouse.getAbsoluteY() < getAbsoluteY() + height) | |
723 | ) { | |
724 | return true; | |
725 | } | |
726 | return false; | |
727 | } | |
728 | ||
729 | } |