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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: layout.cpp | |
3 | // Purpose: Constraint layout system classes | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================= | |
13 | // declarations | |
14 | // ============================================================================= | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
21 | #pragma implementation "layout.h" | |
22 | #endif | |
23 | ||
24 | // For compilers that support precompilation, includes "wx.h". | |
25 | #include "wx/wxprec.h" | |
26 | ||
27 | #ifdef __BORLANDC__ | |
28 | #pragma hdrstop | |
29 | #endif | |
30 | ||
31 | #ifndef WX_PRECOMP | |
32 | #include "wx/defs.h" | |
33 | #endif | |
34 | ||
35 | #if wxUSE_CONSTRAINTS | |
36 | ||
37 | #ifndef WX_PRECOMP | |
38 | #include "wx/window.h" | |
39 | #include "wx/utils.h" | |
40 | #include "wx/dialog.h" | |
41 | #include "wx/msgdlg.h" | |
42 | #include "wx/intl.h" | |
43 | #endif | |
44 | ||
45 | #include "wx/layout.h" | |
46 | ||
47 | IMPLEMENT_DYNAMIC_CLASS(wxIndividualLayoutConstraint, wxObject) | |
48 | IMPLEMENT_DYNAMIC_CLASS(wxLayoutConstraints, wxObject) | |
49 | ||
50 | ||
51 | wxIndividualLayoutConstraint::wxIndividualLayoutConstraint() | |
52 | { | |
53 | myEdge = wxTop; | |
54 | relationship = wxUnconstrained; | |
55 | margin = 0; | |
56 | value = 0; | |
57 | percent = 0; | |
58 | otherEdge = wxTop; | |
59 | done = FALSE; | |
60 | otherWin = (wxWindowBase *) NULL; | |
61 | } | |
62 | ||
63 | wxIndividualLayoutConstraint::~wxIndividualLayoutConstraint() | |
64 | { | |
65 | } | |
66 | ||
67 | void wxIndividualLayoutConstraint::Set(wxRelationship rel, wxWindowBase *otherW, wxEdge otherE, int val, int marg) | |
68 | { | |
69 | if (rel == wxSameAs) | |
70 | { | |
71 | // If Set is called by the user with wxSameAs then call SameAs to do | |
72 | // it since it will actually use wxPercent instead. | |
73 | SameAs(otherW, otherE, marg); | |
74 | return; | |
75 | } | |
76 | ||
77 | relationship = rel; | |
78 | otherWin = otherW; | |
79 | otherEdge = otherE; | |
80 | ||
81 | if ( rel == wxPercentOf ) | |
82 | { | |
83 | percent = val; | |
84 | } | |
85 | else | |
86 | { | |
87 | value = val; | |
88 | } | |
89 | ||
90 | margin = marg; | |
91 | } | |
92 | ||
93 | void wxIndividualLayoutConstraint::LeftOf(wxWindowBase *sibling, int marg) | |
94 | { | |
95 | Set(wxLeftOf, sibling, wxLeft, 0, marg); | |
96 | } | |
97 | ||
98 | void wxIndividualLayoutConstraint::RightOf(wxWindowBase *sibling, int marg) | |
99 | { | |
100 | Set(wxRightOf, sibling, wxRight, 0, marg); | |
101 | } | |
102 | ||
103 | void wxIndividualLayoutConstraint::Above(wxWindowBase *sibling, int marg) | |
104 | { | |
105 | Set(wxAbove, sibling, wxTop, 0, marg); | |
106 | } | |
107 | ||
108 | void wxIndividualLayoutConstraint::Below(wxWindowBase *sibling, int marg) | |
109 | { | |
110 | Set(wxBelow, sibling, wxBottom, 0, marg); | |
111 | } | |
112 | ||
113 | // | |
114 | // 'Same edge' alignment | |
115 | // | |
116 | void wxIndividualLayoutConstraint::SameAs(wxWindowBase *otherW, wxEdge edge, int marg) | |
117 | { | |
118 | Set(wxPercentOf, otherW, edge, 100, marg); | |
119 | } | |
120 | ||
121 | // The edge is a percentage of the other window's edge | |
122 | void wxIndividualLayoutConstraint::PercentOf(wxWindowBase *otherW, wxEdge wh, int per) | |
123 | { | |
124 | Set(wxPercentOf, otherW, wh, per); | |
125 | } | |
126 | ||
127 | // | |
128 | // Edge has absolute value | |
129 | // | |
130 | void wxIndividualLayoutConstraint::Absolute(int val) | |
131 | { | |
132 | value = val; | |
133 | relationship = wxAbsolute; | |
134 | } | |
135 | ||
136 | // Reset constraint if it mentions otherWin | |
137 | bool wxIndividualLayoutConstraint::ResetIfWin(wxWindowBase *otherW) | |
138 | { | |
139 | if (otherW == otherWin) | |
140 | { | |
141 | myEdge = wxTop; | |
142 | relationship = wxAsIs; | |
143 | margin = 0; | |
144 | value = 0; | |
145 | percent = 0; | |
146 | otherEdge = wxTop; | |
147 | otherWin = (wxWindowBase *) NULL; | |
148 | return TRUE; | |
149 | } | |
150 | ||
151 | return FALSE; | |
152 | } | |
153 | ||
154 | // Try to satisfy constraint | |
155 | bool wxIndividualLayoutConstraint::SatisfyConstraint(wxLayoutConstraints *constraints, wxWindowBase *win) | |
156 | { | |
157 | if (relationship == wxAbsolute) | |
158 | { | |
159 | done = TRUE; | |
160 | return TRUE; | |
161 | } | |
162 | ||
163 | switch (myEdge) | |
164 | { | |
165 | case wxLeft: | |
166 | { | |
167 | switch (relationship) | |
168 | { | |
169 | case wxLeftOf: | |
170 | { | |
171 | // We can know this edge if: otherWin is win's | |
172 | // parent, or otherWin has a satisfied constraint, | |
173 | // or otherWin has no constraint. | |
174 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
175 | if (edgePos != -1) | |
176 | { | |
177 | value = edgePos - margin; | |
178 | done = TRUE; | |
179 | return TRUE; | |
180 | } | |
181 | else | |
182 | return FALSE; | |
183 | } | |
184 | case wxRightOf: | |
185 | { | |
186 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
187 | if (edgePos != -1) | |
188 | { | |
189 | value = edgePos + margin; | |
190 | done = TRUE; | |
191 | return TRUE; | |
192 | } | |
193 | else | |
194 | return FALSE; | |
195 | } | |
196 | case wxPercentOf: | |
197 | { | |
198 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
199 | if (edgePos != -1) | |
200 | { | |
201 | value = (int)(edgePos*(((float)percent)*0.01) + margin); | |
202 | done = TRUE; | |
203 | return TRUE; | |
204 | } | |
205 | else | |
206 | return FALSE; | |
207 | } | |
208 | case wxUnconstrained: | |
209 | { | |
210 | // We know the left-hand edge position if we know | |
211 | // the right-hand edge and we know the width; OR if | |
212 | // we know the centre and the width. | |
213 | if (constraints->right.GetDone() && constraints->width.GetDone()) | |
214 | { | |
215 | value = (constraints->right.GetValue() - constraints->width.GetValue() + margin); | |
216 | done = TRUE; | |
217 | return TRUE; | |
218 | } | |
219 | else if (constraints->centreX.GetDone() && constraints->width.GetDone()) | |
220 | { | |
221 | value = (int)(constraints->centreX.GetValue() - (constraints->width.GetValue()/2) + margin); | |
222 | done = TRUE; | |
223 | return TRUE; | |
224 | } | |
225 | else | |
226 | return FALSE; | |
227 | } | |
228 | case wxAsIs: | |
229 | { | |
230 | int y; | |
231 | win->GetPosition(&value, &y); | |
232 | done = TRUE; | |
233 | return TRUE; | |
234 | } | |
235 | default: | |
236 | break; | |
237 | } | |
238 | break; | |
239 | } | |
240 | case wxRight: | |
241 | { | |
242 | switch (relationship) | |
243 | { | |
244 | case wxLeftOf: | |
245 | { | |
246 | // We can know this edge if: otherWin is win's | |
247 | // parent, or otherWin has a satisfied constraint, | |
248 | // or otherWin has no constraint. | |
249 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
250 | if (edgePos != -1) | |
251 | { | |
252 | value = edgePos - margin; | |
253 | done = TRUE; | |
254 | return TRUE; | |
255 | } | |
256 | else | |
257 | return FALSE; | |
258 | } | |
259 | case wxRightOf: | |
260 | { | |
261 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
262 | if (edgePos != -1) | |
263 | { | |
264 | value = edgePos + margin; | |
265 | done = TRUE; | |
266 | return TRUE; | |
267 | } | |
268 | else | |
269 | return FALSE; | |
270 | } | |
271 | case wxPercentOf: | |
272 | { | |
273 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
274 | if (edgePos != -1) | |
275 | { | |
276 | value = (int)(edgePos*(((float)percent)*0.01) - margin); | |
277 | done = TRUE; | |
278 | return TRUE; | |
279 | } | |
280 | else | |
281 | return FALSE; | |
282 | } | |
283 | case wxUnconstrained: | |
284 | { | |
285 | // We know the right-hand edge position if we know the | |
286 | // left-hand edge and we know the width, OR if we know the | |
287 | // centre edge and the width. | |
288 | if (constraints->left.GetDone() && constraints->width.GetDone()) | |
289 | { | |
290 | value = (constraints->left.GetValue() + constraints->width.GetValue() - margin); | |
291 | done = TRUE; | |
292 | return TRUE; | |
293 | } | |
294 | else if (constraints->centreX.GetDone() && constraints->width.GetDone()) | |
295 | { | |
296 | value = (int)(constraints->centreX.GetValue() + (constraints->width.GetValue()/2) - margin); | |
297 | done = TRUE; | |
298 | return TRUE; | |
299 | } | |
300 | else | |
301 | return FALSE; | |
302 | } | |
303 | case wxAsIs: | |
304 | { | |
305 | int x, y; | |
306 | int w, h; | |
307 | win->GetSize(&w, &h); | |
308 | win->GetPosition(&x, &y); | |
309 | value = x + w; | |
310 | done = TRUE; | |
311 | return TRUE; | |
312 | } | |
313 | default: | |
314 | break; | |
315 | } | |
316 | break; | |
317 | } | |
318 | case wxTop: | |
319 | { | |
320 | switch (relationship) | |
321 | { | |
322 | case wxAbove: | |
323 | { | |
324 | // We can know this edge if: otherWin is win's | |
325 | // parent, or otherWin has a satisfied constraint, | |
326 | // or otherWin has no constraint. | |
327 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
328 | if (edgePos != -1) | |
329 | { | |
330 | value = edgePos - margin; | |
331 | done = TRUE; | |
332 | return TRUE; | |
333 | } | |
334 | else | |
335 | return FALSE; | |
336 | } | |
337 | case wxBelow: | |
338 | { | |
339 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
340 | if (edgePos != -1) | |
341 | { | |
342 | value = edgePos + margin; | |
343 | done = TRUE; | |
344 | return TRUE; | |
345 | } | |
346 | else | |
347 | return FALSE; | |
348 | } | |
349 | case wxPercentOf: | |
350 | { | |
351 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
352 | if (edgePos != -1) | |
353 | { | |
354 | value = (int)(edgePos*(((float)percent)*0.01) + margin); | |
355 | done = TRUE; | |
356 | return TRUE; | |
357 | } | |
358 | else | |
359 | return FALSE; | |
360 | } | |
361 | case wxUnconstrained: | |
362 | { | |
363 | // We know the top edge position if we know the bottom edge | |
364 | // and we know the height; OR if we know the centre edge and | |
365 | // the height. | |
366 | if (constraints->bottom.GetDone() && constraints->height.GetDone()) | |
367 | { | |
368 | value = (constraints->bottom.GetValue() - constraints->height.GetValue() + margin); | |
369 | done = TRUE; | |
370 | return TRUE; | |
371 | } | |
372 | else if (constraints->centreY.GetDone() && constraints->height.GetDone()) | |
373 | { | |
374 | value = (constraints->centreY.GetValue() - (constraints->height.GetValue()/2) + margin); | |
375 | done = TRUE; | |
376 | return TRUE; | |
377 | } | |
378 | else | |
379 | return FALSE; | |
380 | } | |
381 | case wxAsIs: | |
382 | { | |
383 | int x; | |
384 | win->GetPosition(&x, &value); | |
385 | done = TRUE; | |
386 | return TRUE; | |
387 | } | |
388 | default: | |
389 | break; | |
390 | } | |
391 | break; | |
392 | } | |
393 | case wxBottom: | |
394 | { | |
395 | switch (relationship) | |
396 | { | |
397 | case wxAbove: | |
398 | { | |
399 | // We can know this edge if: otherWin is win's parent, | |
400 | // or otherWin has a satisfied constraint, or | |
401 | // otherWin has no constraint. | |
402 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
403 | if (edgePos != -1) | |
404 | { | |
405 | value = edgePos + margin; | |
406 | done = TRUE; | |
407 | return TRUE; | |
408 | } | |
409 | else | |
410 | return FALSE; | |
411 | } | |
412 | case wxBelow: | |
413 | { | |
414 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
415 | if (edgePos != -1) | |
416 | { | |
417 | value = edgePos - margin; | |
418 | done = TRUE; | |
419 | return TRUE; | |
420 | } | |
421 | else | |
422 | return FALSE; | |
423 | } | |
424 | case wxPercentOf: | |
425 | { | |
426 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
427 | if (edgePos != -1) | |
428 | { | |
429 | value = (int)(edgePos*(((float)percent)*0.01) - margin); | |
430 | done = TRUE; | |
431 | return TRUE; | |
432 | } | |
433 | else | |
434 | return FALSE; | |
435 | } | |
436 | case wxUnconstrained: | |
437 | { | |
438 | // We know the bottom edge position if we know the top edge | |
439 | // and we know the height; OR if we know the centre edge and | |
440 | // the height. | |
441 | if (constraints->top.GetDone() && constraints->height.GetDone()) | |
442 | { | |
443 | value = (constraints->top.GetValue() + constraints->height.GetValue() - margin); | |
444 | done = TRUE; | |
445 | return TRUE; | |
446 | } | |
447 | else if (constraints->centreY.GetDone() && constraints->height.GetDone()) | |
448 | { | |
449 | value = (constraints->centreY.GetValue() + (constraints->height.GetValue()/2) - margin); | |
450 | done = TRUE; | |
451 | return TRUE; | |
452 | } | |
453 | else | |
454 | return FALSE; | |
455 | } | |
456 | case wxAsIs: | |
457 | { | |
458 | int x, y; | |
459 | int w, h; | |
460 | win->GetSize(&w, &h); | |
461 | win->GetPosition(&x, &y); | |
462 | value = h + y; | |
463 | done = TRUE; | |
464 | return TRUE; | |
465 | } | |
466 | default: | |
467 | break; | |
468 | } | |
469 | break; | |
470 | } | |
471 | case wxCentreX: | |
472 | { | |
473 | switch (relationship) | |
474 | { | |
475 | case wxLeftOf: | |
476 | { | |
477 | // We can know this edge if: otherWin is win's parent, or | |
478 | // otherWin has a satisfied constraint, or otherWin has no | |
479 | // constraint. | |
480 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
481 | if (edgePos != -1) | |
482 | { | |
483 | value = edgePos - margin; | |
484 | done = TRUE; | |
485 | return TRUE; | |
486 | } | |
487 | else | |
488 | return FALSE; | |
489 | } | |
490 | case wxRightOf: | |
491 | { | |
492 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
493 | if (edgePos != -1) | |
494 | { | |
495 | value = edgePos + margin; | |
496 | done = TRUE; | |
497 | return TRUE; | |
498 | } | |
499 | else | |
500 | return FALSE; | |
501 | } | |
502 | case wxPercentOf: | |
503 | { | |
504 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
505 | if (edgePos != -1) | |
506 | { | |
507 | value = (int)(edgePos*(((float)percent)*0.01) + margin); | |
508 | done = TRUE; | |
509 | return TRUE; | |
510 | } | |
511 | else | |
512 | return FALSE; | |
513 | } | |
514 | case wxUnconstrained: | |
515 | { | |
516 | // We know the centre position if we know | |
517 | // the left-hand edge and we know the width, OR | |
518 | // the right-hand edge and the width | |
519 | if (constraints->left.GetDone() && constraints->width.GetDone()) | |
520 | { | |
521 | value = (int)(constraints->left.GetValue() + (constraints->width.GetValue()/2) + margin); | |
522 | done = TRUE; | |
523 | return TRUE; | |
524 | } | |
525 | else if (constraints->right.GetDone() && constraints->width.GetDone()) | |
526 | { | |
527 | value = (int)(constraints->left.GetValue() - (constraints->width.GetValue()/2) + margin); | |
528 | done = TRUE; | |
529 | return TRUE; | |
530 | } | |
531 | else | |
532 | return FALSE; | |
533 | } | |
534 | default: | |
535 | break; | |
536 | } | |
537 | break; | |
538 | } | |
539 | case wxCentreY: | |
540 | { | |
541 | switch (relationship) | |
542 | { | |
543 | case wxAbove: | |
544 | { | |
545 | // We can know this edge if: otherWin is win's parent, | |
546 | // or otherWin has a satisfied constraint, or otherWin | |
547 | // has no constraint. | |
548 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
549 | if (edgePos != -1) | |
550 | { | |
551 | value = edgePos - margin; | |
552 | done = TRUE; | |
553 | return TRUE; | |
554 | } | |
555 | else | |
556 | return FALSE; | |
557 | } | |
558 | case wxBelow: | |
559 | { | |
560 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
561 | if (edgePos != -1) | |
562 | { | |
563 | value = edgePos + margin; | |
564 | done = TRUE; | |
565 | return TRUE; | |
566 | } | |
567 | else | |
568 | return FALSE; | |
569 | } | |
570 | case wxPercentOf: | |
571 | { | |
572 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
573 | if (edgePos != -1) | |
574 | { | |
575 | value = (int)(edgePos*(((float)percent)*0.01) + margin); | |
576 | done = TRUE; | |
577 | return TRUE; | |
578 | } | |
579 | else | |
580 | return FALSE; | |
581 | } | |
582 | case wxUnconstrained: | |
583 | { | |
584 | // We know the centre position if we know | |
585 | // the top edge and we know the height, OR | |
586 | // the bottom edge and the height. | |
587 | if (constraints->bottom.GetDone() && constraints->height.GetDone()) | |
588 | { | |
589 | value = (int)(constraints->bottom.GetValue() - (constraints->height.GetValue()/2) + margin); | |
590 | done = TRUE; | |
591 | return TRUE; | |
592 | } | |
593 | else if (constraints->top.GetDone() && constraints->height.GetDone()) | |
594 | { | |
595 | value = (int)(constraints->top.GetValue() + (constraints->height.GetValue()/2) + margin); | |
596 | done = TRUE; | |
597 | return TRUE; | |
598 | } | |
599 | else | |
600 | return FALSE; | |
601 | } | |
602 | default: | |
603 | break; | |
604 | } | |
605 | break; | |
606 | } | |
607 | case wxWidth: | |
608 | { | |
609 | switch (relationship) | |
610 | { | |
611 | case wxPercentOf: | |
612 | { | |
613 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
614 | if (edgePos != -1) | |
615 | { | |
616 | value = (int)(edgePos*(((float)percent)*0.01)); | |
617 | done = TRUE; | |
618 | return TRUE; | |
619 | } | |
620 | else | |
621 | return FALSE; | |
622 | } | |
623 | case wxAsIs: | |
624 | { | |
625 | if (win) | |
626 | { | |
627 | int h; | |
628 | win->GetSize(&value, &h); | |
629 | done = TRUE; | |
630 | return TRUE; | |
631 | } | |
632 | else return FALSE; | |
633 | } | |
634 | case wxUnconstrained: | |
635 | { | |
636 | // We know the width if we know the left edge and the right edge, OR | |
637 | // if we know the left edge and the centre, OR | |
638 | // if we know the right edge and the centre | |
639 | if (constraints->left.GetDone() && constraints->right.GetDone()) | |
640 | { | |
641 | value = constraints->right.GetValue() - constraints->left.GetValue(); | |
642 | done = TRUE; | |
643 | return TRUE; | |
644 | } | |
645 | else if (constraints->centreX.GetDone() && constraints->left.GetDone()) | |
646 | { | |
647 | value = (int)(2*(constraints->centreX.GetValue() - constraints->left.GetValue())); | |
648 | done = TRUE; | |
649 | return TRUE; | |
650 | } | |
651 | else if (constraints->centreX.GetDone() && constraints->right.GetDone()) | |
652 | { | |
653 | value = (int)(2*(constraints->right.GetValue() - constraints->centreX.GetValue())); | |
654 | done = TRUE; | |
655 | return TRUE; | |
656 | } | |
657 | else | |
658 | return FALSE; | |
659 | } | |
660 | default: | |
661 | break; | |
662 | } | |
663 | break; | |
664 | } | |
665 | case wxHeight: | |
666 | { | |
667 | switch (relationship) | |
668 | { | |
669 | case wxPercentOf: | |
670 | { | |
671 | int edgePos = GetEdge(otherEdge, win, otherWin); | |
672 | if (edgePos != -1) | |
673 | { | |
674 | value = (int)(edgePos*(((float)percent)*0.01)); | |
675 | done = TRUE; | |
676 | return TRUE; | |
677 | } | |
678 | else | |
679 | return FALSE; | |
680 | } | |
681 | case wxAsIs: | |
682 | { | |
683 | if (win) | |
684 | { | |
685 | int w; | |
686 | win->GetSize(&w, &value); | |
687 | done = TRUE; | |
688 | return TRUE; | |
689 | } | |
690 | else return FALSE; | |
691 | } | |
692 | case wxUnconstrained: | |
693 | { | |
694 | // We know the height if we know the top edge and the bottom edge, OR | |
695 | // if we know the top edge and the centre, OR | |
696 | // if we know the bottom edge and the centre | |
697 | if (constraints->top.GetDone() && constraints->bottom.GetDone()) | |
698 | { | |
699 | value = constraints->bottom.GetValue() - constraints->top.GetValue(); | |
700 | done = TRUE; | |
701 | return TRUE; | |
702 | } | |
703 | else if (constraints->top.GetDone() && constraints->centreY.GetDone()) | |
704 | { | |
705 | value = (int)(2*(constraints->centreY.GetValue() - constraints->top.GetValue())); | |
706 | done = TRUE; | |
707 | return TRUE; | |
708 | } | |
709 | else if (constraints->bottom.GetDone() && constraints->centreY.GetDone()) | |
710 | { | |
711 | value = (int)(2*(constraints->bottom.GetValue() - constraints->centreY.GetValue())); | |
712 | done = TRUE; | |
713 | return TRUE; | |
714 | } | |
715 | else | |
716 | return FALSE; | |
717 | } | |
718 | default: | |
719 | break; | |
720 | } | |
721 | break; | |
722 | } | |
723 | default: | |
724 | break; | |
725 | } | |
726 | return FALSE; | |
727 | } | |
728 | ||
729 | // Get the value of this edge or dimension, or if this is not determinable, -1. | |
730 | int wxIndividualLayoutConstraint::GetEdge(wxEdge which, | |
731 | wxWindowBase *thisWin, | |
732 | wxWindowBase *other) const | |
733 | { | |
734 | // If the edge or dimension belongs to the parent, then we know the | |
735 | // dimension is obtainable immediately. E.g. a wxExpandSizer may contain a | |
736 | // button (but the button's true parent is a panel, not the sizer) | |
737 | if (other->GetChildren().Find((wxWindow*)thisWin)) | |
738 | { | |
739 | switch (which) | |
740 | { | |
741 | case wxLeft: | |
742 | { | |
743 | return 0; | |
744 | } | |
745 | case wxTop: | |
746 | { | |
747 | return 0; | |
748 | } | |
749 | case wxRight: | |
750 | { | |
751 | int w, h; | |
752 | other->GetClientSizeConstraint(&w, &h); | |
753 | return w; | |
754 | } | |
755 | case wxBottom: | |
756 | { | |
757 | int w, h; | |
758 | other->GetClientSizeConstraint(&w, &h); | |
759 | return h; | |
760 | } | |
761 | case wxWidth: | |
762 | { | |
763 | int w, h; | |
764 | other->GetClientSizeConstraint(&w, &h); | |
765 | return w; | |
766 | } | |
767 | case wxHeight: | |
768 | { | |
769 | int w, h; | |
770 | other->GetClientSizeConstraint(&w, &h); | |
771 | return h; | |
772 | } | |
773 | case wxCentreX: | |
774 | case wxCentreY: | |
775 | { | |
776 | int w, h; | |
777 | other->GetClientSizeConstraint(&w, &h); | |
778 | if (which == wxCentreX) | |
779 | return (int)(w/2); | |
780 | else | |
781 | return (int)(h/2); | |
782 | } | |
783 | default: | |
784 | return -1; | |
785 | } | |
786 | } | |
787 | switch (which) | |
788 | { | |
789 | case wxLeft: | |
790 | { | |
791 | wxLayoutConstraints *constr = other->GetConstraints(); | |
792 | // If no constraints, it means the window is not dependent | |
793 | // on anything, and therefore we know its value immediately | |
794 | if (constr) | |
795 | { | |
796 | if (constr->left.GetDone()) | |
797 | return constr->left.GetValue(); | |
798 | else | |
799 | return -1; | |
800 | } | |
801 | else | |
802 | { | |
803 | int x, y; | |
804 | other->GetPosition(&x, &y); | |
805 | return x; | |
806 | } | |
807 | } | |
808 | case wxTop: | |
809 | { | |
810 | wxLayoutConstraints *constr = other->GetConstraints(); | |
811 | // If no constraints, it means the window is not dependent | |
812 | // on anything, and therefore we know its value immediately | |
813 | if (constr) | |
814 | { | |
815 | if (constr->top.GetDone()) | |
816 | return constr->top.GetValue(); | |
817 | else | |
818 | return -1; | |
819 | } | |
820 | else | |
821 | { | |
822 | int x, y; | |
823 | other->GetPosition(&x, &y); | |
824 | return y; | |
825 | } | |
826 | } | |
827 | case wxRight: | |
828 | { | |
829 | wxLayoutConstraints *constr = other->GetConstraints(); | |
830 | // If no constraints, it means the window is not dependent | |
831 | // on anything, and therefore we know its value immediately | |
832 | if (constr) | |
833 | { | |
834 | if (constr->right.GetDone()) | |
835 | return constr->right.GetValue(); | |
836 | else | |
837 | return -1; | |
838 | } | |
839 | else | |
840 | { | |
841 | int x, y, w, h; | |
842 | other->GetPosition(&x, &y); | |
843 | other->GetSize(&w, &h); | |
844 | return (int)(x + w); | |
845 | } | |
846 | } | |
847 | case wxBottom: | |
848 | { | |
849 | wxLayoutConstraints *constr = other->GetConstraints(); | |
850 | // If no constraints, it means the window is not dependent | |
851 | // on anything, and therefore we know its value immediately | |
852 | if (constr) | |
853 | { | |
854 | if (constr->bottom.GetDone()) | |
855 | return constr->bottom.GetValue(); | |
856 | else | |
857 | return -1; | |
858 | } | |
859 | else | |
860 | { | |
861 | int x, y, w, h; | |
862 | other->GetPosition(&x, &y); | |
863 | other->GetSize(&w, &h); | |
864 | return (int)(y + h); | |
865 | } | |
866 | } | |
867 | case wxWidth: | |
868 | { | |
869 | wxLayoutConstraints *constr = other->GetConstraints(); | |
870 | // If no constraints, it means the window is not dependent | |
871 | // on anything, and therefore we know its value immediately | |
872 | if (constr) | |
873 | { | |
874 | if (constr->width.GetDone()) | |
875 | return constr->width.GetValue(); | |
876 | else | |
877 | return -1; | |
878 | } | |
879 | else | |
880 | { | |
881 | int w, h; | |
882 | other->GetSize(&w, &h); | |
883 | return w; | |
884 | } | |
885 | } | |
886 | case wxHeight: | |
887 | { | |
888 | wxLayoutConstraints *constr = other->GetConstraints(); | |
889 | // If no constraints, it means the window is not dependent | |
890 | // on anything, and therefore we know its value immediately | |
891 | if (constr) | |
892 | { | |
893 | if (constr->height.GetDone()) | |
894 | return constr->height.GetValue(); | |
895 | else | |
896 | return -1; | |
897 | } | |
898 | else | |
899 | { | |
900 | int w, h; | |
901 | other->GetSize(&w, &h); | |
902 | return h; | |
903 | } | |
904 | } | |
905 | case wxCentreX: | |
906 | { | |
907 | wxLayoutConstraints *constr = other->GetConstraints(); | |
908 | // If no constraints, it means the window is not dependent | |
909 | // on anything, and therefore we know its value immediately | |
910 | if (constr) | |
911 | { | |
912 | if (constr->centreX.GetDone()) | |
913 | return constr->centreX.GetValue(); | |
914 | else | |
915 | return -1; | |
916 | } | |
917 | else | |
918 | { | |
919 | int x, y, w, h; | |
920 | other->GetPosition(&x, &y); | |
921 | other->GetSize(&w, &h); | |
922 | return (int)(x + (w/2)); | |
923 | } | |
924 | } | |
925 | case wxCentreY: | |
926 | { | |
927 | wxLayoutConstraints *constr = other->GetConstraints(); | |
928 | // If no constraints, it means the window is not dependent | |
929 | // on anything, and therefore we know its value immediately | |
930 | if (constr) | |
931 | { | |
932 | if (constr->centreY.GetDone()) | |
933 | return constr->centreY.GetValue(); | |
934 | else | |
935 | return -1; | |
936 | } | |
937 | else | |
938 | { | |
939 | int x, y, w, h; | |
940 | other->GetPosition(&x, &y); | |
941 | other->GetSize(&w, &h); | |
942 | return (int)(y + (h/2)); | |
943 | } | |
944 | } | |
945 | default: | |
946 | break; | |
947 | } | |
948 | return -1; | |
949 | } | |
950 | ||
951 | wxLayoutConstraints::wxLayoutConstraints() | |
952 | { | |
953 | left.SetEdge(wxLeft); | |
954 | top.SetEdge(wxTop); | |
955 | right.SetEdge(wxRight); | |
956 | bottom.SetEdge(wxBottom); | |
957 | centreX.SetEdge(wxCentreX); | |
958 | centreY.SetEdge(wxCentreY); | |
959 | width.SetEdge(wxWidth); | |
960 | height.SetEdge(wxHeight); | |
961 | } | |
962 | ||
963 | wxLayoutConstraints::~wxLayoutConstraints() | |
964 | { | |
965 | } | |
966 | ||
967 | bool wxLayoutConstraints::SatisfyConstraints(wxWindowBase *win, int *nChanges) | |
968 | { | |
969 | int noChanges = 0; | |
970 | ||
971 | bool done = width.GetDone(); | |
972 | bool newDone = (done ? TRUE : width.SatisfyConstraint(this, win)); | |
973 | if (newDone != done) | |
974 | noChanges ++; | |
975 | ||
976 | done = height.GetDone(); | |
977 | newDone = (done ? TRUE : height.SatisfyConstraint(this, win)); | |
978 | if (newDone != done) | |
979 | noChanges ++; | |
980 | ||
981 | done = left.GetDone(); | |
982 | newDone = (done ? TRUE : left.SatisfyConstraint(this, win)); | |
983 | if (newDone != done) | |
984 | noChanges ++; | |
985 | ||
986 | done = top.GetDone(); | |
987 | newDone = (done ? TRUE : top.SatisfyConstraint(this, win)); | |
988 | if (newDone != done) | |
989 | noChanges ++; | |
990 | ||
991 | done = right.GetDone(); | |
992 | newDone = (done ? TRUE : right.SatisfyConstraint(this, win)); | |
993 | if (newDone != done) | |
994 | noChanges ++; | |
995 | ||
996 | done = bottom.GetDone(); | |
997 | newDone = (done ? TRUE : bottom.SatisfyConstraint(this, win)); | |
998 | if (newDone != done) | |
999 | noChanges ++; | |
1000 | ||
1001 | done = centreX.GetDone(); | |
1002 | newDone = (done ? TRUE : centreX.SatisfyConstraint(this, win)); | |
1003 | if (newDone != done) | |
1004 | noChanges ++; | |
1005 | ||
1006 | done = centreY.GetDone(); | |
1007 | newDone = (done ? TRUE : centreY.SatisfyConstraint(this, win)); | |
1008 | if (newDone != done) | |
1009 | noChanges ++; | |
1010 | ||
1011 | *nChanges = noChanges; | |
1012 | ||
1013 | return AreSatisfied(); | |
1014 | } | |
1015 | ||
1016 | #endif // wxUSE_CONSTRAINTS |