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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: slider.cpp | |
3 | // Purpose: wxSlider | |
4 | // Author: Stefan Csomor | |
5 | // Modified by: | |
6 | // Created: 1998-01-01 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Stefan Csomor | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #include "wx/wxprec.h" | |
13 | ||
14 | #if wxUSE_SLIDER | |
15 | ||
16 | #include "wx/slider.h" | |
17 | #include "wx/mac/uma.h" | |
18 | ||
19 | IMPLEMENT_DYNAMIC_CLASS(wxSlider, wxControl) | |
20 | ||
21 | BEGIN_EVENT_TABLE(wxSlider, wxControl) | |
22 | END_EVENT_TABLE() | |
23 | ||
24 | // The dimensions of the different styles of sliders (from Aqua document) | |
25 | #define wxSLIDER_DIMENSIONACROSS 15 | |
26 | #define wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS 24 | |
27 | #define wxSLIDER_DIMENSIONACROSS_ARROW 18 | |
28 | ||
29 | // Distance between slider and text | |
30 | #define wxSLIDER_BORDERTEXT 5 | |
31 | ||
32 | // NB: The default orientation for a slider is horizontal; however, if the user specifies | |
33 | // some slider styles but doesn't specify the orientation we have to assume he wants a | |
34 | // horizontal one. Therefore in this file when testing for the slider's orientation | |
35 | // vertical is tested for if this is not set then we use the horizontal one | |
36 | // e.g., if (GetWindowStyle() & wxSL_VERTICAL) {} else { horizontal case }. | |
37 | ||
38 | wxSlider::wxSlider() | |
39 | { | |
40 | m_pageSize = 1; | |
41 | m_lineSize = 1; | |
42 | m_rangeMax = 0; | |
43 | m_rangeMin = 0; | |
44 | m_tickFreq = 0; | |
45 | ||
46 | m_macMinimumStatic = NULL; | |
47 | m_macMaximumStatic = NULL; | |
48 | m_macValueStatic = NULL; | |
49 | } | |
50 | ||
51 | bool wxSlider::Create(wxWindow *parent, | |
52 | wxWindowID id, | |
53 | int value, int minValue, int maxValue, | |
54 | const wxPoint& pos, | |
55 | const wxSize& size, long style, | |
56 | const wxValidator& validator, | |
57 | const wxString& name) | |
58 | { | |
59 | m_macIsUserPane = false; | |
60 | ||
61 | m_macMinimumStatic = NULL; | |
62 | m_macMaximumStatic = NULL; | |
63 | m_macValueStatic = NULL; | |
64 | ||
65 | m_lineSize = 1; | |
66 | m_tickFreq = 0; | |
67 | ||
68 | m_rangeMax = maxValue; | |
69 | m_rangeMin = minValue; | |
70 | ||
71 | m_pageSize = (int)((maxValue - minValue) / 10); | |
72 | ||
73 | // our styles are redundant: wxSL_LEFT/RIGHT imply wxSL_VERTICAL and | |
74 | // wxSL_TOP/BOTTOM imply wxSL_HORIZONTAL, but for backwards compatibility | |
75 | // reasons we can't really change it, instead try to infer the orientation | |
76 | // from the flags given to us here | |
77 | switch ( style & (wxSL_LEFT | wxSL_RIGHT | wxSL_TOP | wxSL_BOTTOM) ) | |
78 | { | |
79 | case wxSL_LEFT: | |
80 | case wxSL_RIGHT: | |
81 | style |= wxSL_VERTICAL; | |
82 | break; | |
83 | ||
84 | case wxSL_TOP: | |
85 | case wxSL_BOTTOM: | |
86 | style |= wxSL_HORIZONTAL; | |
87 | break; | |
88 | ||
89 | case 0: | |
90 | default: | |
91 | // no specific direction, do we have at least the orientation? | |
92 | if ( !(style & (wxSL_HORIZONTAL | wxSL_VERTICAL)) ) | |
93 | // no: choose default | |
94 | style |= wxSL_BOTTOM | wxSL_HORIZONTAL; | |
95 | break; | |
96 | } | |
97 | ||
98 | wxASSERT_MSG( !(style & wxSL_VERTICAL) || !(style & wxSL_HORIZONTAL), | |
99 | wxT("incompatible slider direction and orientation") ); | |
100 | ||
101 | if ( !wxControl::Create(parent, id, pos, size, style, validator, name) ) | |
102 | return false; | |
103 | ||
104 | Rect bounds = wxMacGetBoundsForControl( this , pos , size ); | |
105 | ||
106 | // NB: (RN) Ticks here are sometimes off in the GUI if there | |
107 | // are not as many tick marks as there are values | |
108 | // | |
109 | int tickMarks = 0; | |
110 | if ( style & wxSL_AUTOTICKS ) | |
111 | tickMarks = (maxValue - minValue) + 1; // +1 for the 0 value | |
112 | ||
113 | // keep the number of tickmarks from becoming unwieldly, therefore below it is ok to cast | |
114 | // it to a UInt16 | |
115 | while (tickMarks > 20) | |
116 | tickMarks /= 5; | |
117 | ||
118 | m_peer = new wxMacControl( this ); | |
119 | OSStatus err = CreateSliderControl( | |
120 | MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds, | |
121 | value, minValue, maxValue, | |
122 | kControlSliderPointsDownOrRight, | |
123 | (UInt16) tickMarks, true /* liveTracking */, | |
124 | GetwxMacLiveScrollbarActionProc(), | |
125 | m_peer->GetControlRefAddr() ); | |
126 | verify_noerr( err ); | |
127 | ||
128 | if (style & wxSL_VERTICAL) | |
129 | // Forces SetSize to use the proper width | |
130 | SetSizeHints(10, -1, 10, -1); | |
131 | else | |
132 | // Forces SetSize to use the proper height | |
133 | SetSizeHints(-1, 10, -1, 10); | |
134 | ||
135 | // NB: SetSizeHints is overloaded by wxSlider and will substitute 10 with the | |
136 | // proper dimensions, it also means other people cannot bugger the slider with | |
137 | // other values | |
138 | ||
139 | if (style & wxSL_LABELS) | |
140 | { | |
141 | m_macMinimumStatic = new wxStaticText( parent, wxID_ANY, wxEmptyString ); | |
142 | m_macMaximumStatic = new wxStaticText( parent, wxID_ANY, wxEmptyString ); | |
143 | m_macValueStatic = new wxStaticText( parent, wxID_ANY, wxEmptyString ); | |
144 | } | |
145 | ||
146 | SetRange(minValue, maxValue); | |
147 | SetValue(value); | |
148 | ||
149 | MacPostControlCreate(pos, size); | |
150 | ||
151 | return true; | |
152 | } | |
153 | ||
154 | wxSlider::~wxSlider() | |
155 | { | |
156 | // this is a special case, as we had to add windows as siblings we are | |
157 | // responsible for their disposal, but only if we are not part of a DestroyAllChildren | |
158 | if ( m_parent && !m_parent->IsBeingDeleted() ) | |
159 | { | |
160 | delete m_macMinimumStatic; | |
161 | delete m_macMaximumStatic; | |
162 | delete m_macValueStatic; | |
163 | } | |
164 | } | |
165 | ||
166 | int wxSlider::GetValue() const | |
167 | { | |
168 | // We may need to invert the value returned by the widget | |
169 | return ValueInvertOrNot( m_peer->GetValue() ) ; | |
170 | } | |
171 | ||
172 | void wxSlider::SetValue(int value) | |
173 | { | |
174 | if ( m_macValueStatic ) | |
175 | { | |
176 | wxString valuestring; | |
177 | valuestring.Printf( wxT("%d"), value ); | |
178 | m_macValueStatic->SetLabel( valuestring ); | |
179 | } | |
180 | ||
181 | // We only invert for the setting of the actual native widget | |
182 | m_peer->SetValue( ValueInvertOrNot( value ) ); | |
183 | } | |
184 | ||
185 | void wxSlider::SetRange(int minValue, int maxValue) | |
186 | { | |
187 | wxString value; | |
188 | ||
189 | m_rangeMin = minValue; | |
190 | m_rangeMax = maxValue; | |
191 | ||
192 | m_peer->SetMinimum( m_rangeMin ); | |
193 | m_peer->SetMaximum( m_rangeMax ); | |
194 | ||
195 | if (m_macMinimumStatic) | |
196 | { | |
197 | value.Printf( wxT("%d"), ValueInvertOrNot( m_rangeMin ) ); | |
198 | m_macMinimumStatic->SetLabel( value ); | |
199 | } | |
200 | ||
201 | if (m_macMaximumStatic) | |
202 | { | |
203 | value.Printf( wxT("%d"), ValueInvertOrNot( m_rangeMax ) ); | |
204 | m_macMaximumStatic->SetLabel( value ); | |
205 | } | |
206 | ||
207 | // If the range is out of bounds, set it to a | |
208 | // value that is within bounds | |
209 | // RN: Testing reveals OSX does its own | |
210 | // bounding, perhaps this isn't needed? | |
211 | int currentValue = GetValue(); | |
212 | ||
213 | if(currentValue < m_rangeMin) | |
214 | SetValue(m_rangeMin); | |
215 | else if(currentValue > m_rangeMax) | |
216 | SetValue(m_rangeMax); | |
217 | } | |
218 | ||
219 | // For trackbars only | |
220 | void wxSlider::SetTickFreq(int n, int pos) | |
221 | { | |
222 | // TODO | |
223 | m_tickFreq = n; | |
224 | } | |
225 | ||
226 | void wxSlider::SetPageSize(int pageSize) | |
227 | { | |
228 | // TODO | |
229 | m_pageSize = pageSize; | |
230 | } | |
231 | ||
232 | int wxSlider::GetPageSize() const | |
233 | { | |
234 | return m_pageSize; | |
235 | } | |
236 | ||
237 | void wxSlider::ClearSel() | |
238 | { | |
239 | // TODO | |
240 | } | |
241 | ||
242 | void wxSlider::ClearTicks() | |
243 | { | |
244 | // TODO | |
245 | } | |
246 | ||
247 | void wxSlider::SetLineSize(int lineSize) | |
248 | { | |
249 | m_lineSize = lineSize; | |
250 | // TODO | |
251 | } | |
252 | ||
253 | int wxSlider::GetLineSize() const | |
254 | { | |
255 | // TODO | |
256 | return 0; | |
257 | } | |
258 | ||
259 | int wxSlider::GetSelEnd() const | |
260 | { | |
261 | // TODO | |
262 | return 0; | |
263 | } | |
264 | ||
265 | int wxSlider::GetSelStart() const | |
266 | { | |
267 | // TODO | |
268 | return 0; | |
269 | } | |
270 | ||
271 | void wxSlider::SetSelection(int minPos, int maxPos) | |
272 | { | |
273 | // TODO | |
274 | } | |
275 | ||
276 | void wxSlider::SetThumbLength(int len) | |
277 | { | |
278 | // TODO | |
279 | } | |
280 | ||
281 | int wxSlider::GetThumbLength() const | |
282 | { | |
283 | // TODO | |
284 | return 0; | |
285 | } | |
286 | ||
287 | void wxSlider::SetTick(int tickPos) | |
288 | { | |
289 | // TODO | |
290 | } | |
291 | ||
292 | void wxSlider::Command(wxCommandEvent &event) | |
293 | { | |
294 | SetValue(event.GetInt()); | |
295 | ProcessCommand(event); | |
296 | } | |
297 | ||
298 | void wxSlider::MacHandleControlClick( WXWidget control, wxInt16 controlpart, bool mouseStillDown ) | |
299 | { | |
300 | // Whatever the native value is, we may need to invert it for calling | |
301 | // SetValue and putting the possibly inverted value in the event | |
302 | int value = ValueInvertOrNot( m_peer->GetValue() ); | |
303 | ||
304 | SetValue( value ); | |
305 | ||
306 | wxScrollEvent event( wxEVT_SCROLL_THUMBTRACK, m_windowId ); | |
307 | event.SetPosition( value ); | |
308 | event.SetEventObject( this ); | |
309 | GetEventHandler()->ProcessEvent( event ); | |
310 | ||
311 | wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, m_windowId ); | |
312 | cevent.SetInt( value ); | |
313 | cevent.SetEventObject( this ); | |
314 | GetEventHandler()->ProcessEvent( cevent ); | |
315 | } | |
316 | ||
317 | wxInt32 wxSlider::MacControlHit( WXEVENTHANDLERREF handler , WXEVENTREF mevent ) | |
318 | { | |
319 | // Whatever the native value is, we may need to invert it for calling | |
320 | // SetValue and putting the possibly inverted value in the event | |
321 | int value = ValueInvertOrNot( m_peer->GetValue() ) ; | |
322 | ||
323 | SetValue( value ) ; | |
324 | ||
325 | wxScrollEvent event( wxEVT_SCROLL_THUMBRELEASE, m_windowId ); | |
326 | event.SetPosition( value ); | |
327 | event.SetEventObject( this ); | |
328 | GetEventHandler()->ProcessEvent( event ); | |
329 | ||
330 | wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, m_windowId ); | |
331 | cevent.SetInt( value ); | |
332 | cevent.SetEventObject( this ); | |
333 | ||
334 | GetEventHandler()->ProcessEvent( cevent ); | |
335 | ||
336 | return noErr; | |
337 | } | |
338 | ||
339 | // This is overloaded in wxSlider so that the proper width/height will always be used | |
340 | // for the slider different values would cause redrawing and mouse detection problems | |
341 | // | |
342 | void wxSlider::DoSetSizeHints( int minW, int minH, | |
343 | int maxW, int maxH, | |
344 | int incW, int incH ) | |
345 | { | |
346 | wxSize size = GetBestSize(); | |
347 | ||
348 | if (GetWindowStyle() & wxSL_VERTICAL) | |
349 | wxWindow::DoSetSizeHints(size.x, minH, size.x, maxH, incW, incH); | |
350 | else | |
351 | wxWindow::DoSetSizeHints(minW, size.y, maxW, size.y, incW, incH); | |
352 | } | |
353 | ||
354 | wxSize wxSlider::DoGetBestSize() const | |
355 | { | |
356 | wxSize size; | |
357 | int textwidth, textheight; | |
358 | int mintwidth, mintheight; | |
359 | int maxtwidth, maxtheight; | |
360 | ||
361 | textwidth = textheight = 0; | |
362 | mintwidth = mintheight = 0; | |
363 | maxtwidth = maxtheight = 0; | |
364 | ||
365 | if (GetWindowStyle() & wxSL_LABELS) | |
366 | { | |
367 | wxString text; | |
368 | ||
369 | // Get maximum text label width and height | |
370 | text.Printf( wxT("%d"), ValueInvertOrNot( m_rangeMin ) ); | |
371 | GetTextExtent(text, &mintwidth, &mintheight); | |
372 | text.Printf( wxT("%d"), ValueInvertOrNot( m_rangeMax ) ); | |
373 | GetTextExtent(text, &maxtwidth, &maxtheight); | |
374 | ||
375 | if (maxtheight > mintheight) | |
376 | textheight = maxtheight; | |
377 | else | |
378 | textheight = mintheight; | |
379 | ||
380 | if (maxtwidth > mintwidth) | |
381 | textwidth = maxtwidth; | |
382 | else | |
383 | textwidth = mintwidth; | |
384 | } | |
385 | ||
386 | if (GetWindowStyle() & wxSL_VERTICAL) | |
387 | { | |
388 | size.y = 150; | |
389 | ||
390 | if (GetWindowStyle() & wxSL_AUTOTICKS) | |
391 | size.x = wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS; | |
392 | else | |
393 | size.x = wxSLIDER_DIMENSIONACROSS_ARROW; | |
394 | ||
395 | if (GetWindowStyle() & wxSL_LABELS) | |
396 | size.x += textwidth + wxSLIDER_BORDERTEXT; | |
397 | } | |
398 | else | |
399 | { | |
400 | size.x = 150; | |
401 | ||
402 | if (GetWindowStyle() & wxSL_AUTOTICKS) | |
403 | size.y = wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS; | |
404 | else | |
405 | size.y = wxSLIDER_DIMENSIONACROSS_ARROW; | |
406 | ||
407 | if (GetWindowStyle() & wxSL_LABELS) | |
408 | { | |
409 | size.y += textheight + wxSLIDER_BORDERTEXT; | |
410 | size.x += (mintwidth / 2) + (maxtwidth / 2); | |
411 | } | |
412 | } | |
413 | ||
414 | return size; | |
415 | } | |
416 | ||
417 | void wxSlider::DoSetSize(int x, int y, int w, int h, int sizeFlags) | |
418 | { | |
419 | int xborder, yborder; | |
420 | int minValWidth, maxValWidth, textheight; | |
421 | int sliderBreadth; | |
422 | int width = w; | |
423 | ||
424 | xborder = yborder = 0; | |
425 | ||
426 | if (GetWindowStyle() & wxSL_LABELS) | |
427 | { | |
428 | wxString text; | |
429 | int ht, valValWidth; | |
430 | ||
431 | // Get maximum text label width and height | |
432 | text.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMin ) ); | |
433 | GetTextExtent(text, &minValWidth, &textheight); | |
434 | text.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMax ) ); | |
435 | GetTextExtent(text, &maxValWidth, &ht); | |
436 | ||
437 | if (ht > textheight) | |
438 | textheight = ht; | |
439 | ||
440 | if (GetWindowStyle() & wxSL_HORIZONTAL) | |
441 | { | |
442 | if ( m_macMinimumStatic ) | |
443 | { | |
444 | w -= minValWidth / 2; | |
445 | x += minValWidth / 2; | |
446 | } | |
447 | ||
448 | if ( m_macMaximumStatic ) | |
449 | w -= maxValWidth / 2; | |
450 | } | |
451 | ||
452 | // Labels have this control's parent as their parent | |
453 | // so if this control is not at 0,0 relative to the parent | |
454 | // the labels need to know the position of this control | |
455 | // relative to its parent in order to size properly, so | |
456 | // move the control first so we can use GetPosition() | |
457 | wxControl::DoSetSize( x, y, w, h, sizeFlags ); | |
458 | ||
459 | if (GetWindowStyle() & wxSL_VERTICAL) | |
460 | // If vertical, use current value | |
461 | text.Printf(wxT("%d"), (int)m_peer->GetValue()); | |
462 | else | |
463 | // Use max so that the current value doesn't drift as centering would need to change | |
464 | text.Printf(wxT("%d"), m_rangeMax); | |
465 | ||
466 | GetTextExtent(text, &valValWidth, &ht); | |
467 | ||
468 | yborder = textheight + wxSLIDER_BORDERTEXT; | |
469 | ||
470 | // Get slider breadth | |
471 | if (GetWindowStyle() & wxSL_AUTOTICKS) | |
472 | sliderBreadth = wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS; | |
473 | else | |
474 | sliderBreadth = wxSLIDER_DIMENSIONACROSS_ARROW; | |
475 | ||
476 | if (GetWindowStyle() & wxSL_VERTICAL) | |
477 | { | |
478 | h = h - yborder; | |
479 | ||
480 | if ( m_macMinimumStatic ) | |
481 | m_macMinimumStatic->Move(GetPosition().x + sliderBreadth + wxSLIDER_BORDERTEXT, GetPosition().y + h - yborder); | |
482 | if ( m_macMaximumStatic ) | |
483 | m_macMaximumStatic->Move(GetPosition().x + sliderBreadth + wxSLIDER_BORDERTEXT, GetPosition().y + 0); | |
484 | if ( m_macValueStatic ) | |
485 | m_macValueStatic->Move(GetPosition().x + sliderBreadth + wxSLIDER_BORDERTEXT, GetPosition().y + (h / 2) - (ht / 2)); | |
486 | } | |
487 | else | |
488 | { | |
489 | if ( m_macMinimumStatic ) | |
490 | m_macMinimumStatic->Move(GetPosition().x, GetPosition().y + sliderBreadth + wxSLIDER_BORDERTEXT); | |
491 | if ( m_macMaximumStatic ) | |
492 | m_macMaximumStatic->Move(GetPosition().x + w - maxValWidth, GetPosition().y + sliderBreadth + wxSLIDER_BORDERTEXT); | |
493 | if ( m_macValueStatic ) | |
494 | m_macValueStatic->Move(GetPosition().x + (w / 2) - (valValWidth / 2), GetPosition().y + sliderBreadth + wxSLIDER_BORDERTEXT); | |
495 | } | |
496 | } | |
497 | ||
498 | // yet another hack since this is a composite control | |
499 | // when wxSlider has it's size hardcoded, we're not allowed to | |
500 | // change the size. But when the control has labels, we DO need | |
501 | // to resize the internal Mac control to accommodate the text labels. | |
502 | // We need to trick the wxWidgets resize mechanism so that we can | |
503 | // resize the slider part of the control ONLY. | |
504 | ||
505 | // TODO: Can all of this code go in the conditional wxSL_LABELS block? | |
506 | ||
507 | int minWidth = m_minWidth; | |
508 | ||
509 | if (GetWindowStyle() & wxSL_LABELS) | |
510 | { | |
511 | // make sure we don't allow the entire control to be resized accidently | |
512 | if (width == GetSize().x) | |
513 | m_minWidth = -1; | |
514 | } | |
515 | ||
516 | // If the control has labels, we still need to call this again because | |
517 | // the labels alter the control's w and h values. | |
518 | wxControl::DoSetSize( x, y, w, h, sizeFlags ); | |
519 | ||
520 | m_minWidth = minWidth; | |
521 | } | |
522 | ||
523 | void wxSlider::DoMoveWindow(int x, int y, int width, int height) | |
524 | { | |
525 | wxControl::DoMoveWindow( x, y, width, height ); | |
526 | } | |
527 | ||
528 | // Common processing to invert slider values based on wxSL_INVERSE | |
529 | int wxSlider::ValueInvertOrNot(int value) const | |
530 | { | |
531 | int result = 0; | |
532 | ||
533 | if (m_windowStyle & wxSL_VERTICAL) | |
534 | { | |
535 | // The reason for the backwards logic is that Mac's vertical sliders are | |
536 | // inverted compared to Windows and GTK, hence we want inversion to be the | |
537 | // default, and if wxSL_INVERSE is set, then we do not invert (use native) | |
538 | if (m_windowStyle & wxSL_INVERSE) | |
539 | result = value; | |
540 | else | |
541 | result = (m_rangeMax + m_rangeMin) - value; | |
542 | } | |
543 | else // normal logic applies to HORIZONTAL sliders | |
544 | { | |
545 | result = wxSliderBase::ValueInvertOrNot(value); | |
546 | } | |
547 | ||
548 | return result; | |
549 | } | |
550 | ||
551 | #endif // wxUSE_SLIDER |