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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 | /* | |
33 | * NB! The default orientation for a slider is horizontal however if the user specifies | |
34 | * some slider styles but doesn't specify the orientation we have to assume he wants a | |
35 | * horizontal one. Therefore in this file when testing for the slider's orientation | |
36 | * vertical is tested for if this is not set then we use the horizontal one | |
37 | * e.g., if (GetWindowStyle() & wxSL_VERTICAL) {} else { horizontal case }. | |
38 | */ | |
39 | ||
40 | ||
41 | wxSlider::wxSlider() | |
42 | { | |
43 | m_pageSize = 1; | |
44 | m_lineSize = 1; | |
45 | m_rangeMax = 0; | |
46 | m_rangeMin = 0; | |
47 | m_tickFreq = 0; | |
48 | ||
49 | m_macMinimumStatic = NULL; | |
50 | m_macMaximumStatic = NULL; | |
51 | m_macValueStatic = NULL; | |
52 | } | |
53 | ||
54 | bool wxSlider::Create(wxWindow *parent, wxWindowID id, | |
55 | int value, int minValue, int maxValue, | |
56 | const wxPoint& pos, | |
57 | const wxSize& size, long style, | |
58 | const wxValidator& validator, | |
59 | const wxString& name) | |
60 | { | |
61 | m_macIsUserPane = false ; | |
62 | ||
63 | m_macMinimumStatic = NULL ; | |
64 | m_macMaximumStatic = NULL ; | |
65 | m_macValueStatic = NULL ; | |
66 | ||
67 | m_lineSize = 1; | |
68 | m_tickFreq = 0; | |
69 | ||
70 | m_rangeMax = maxValue; | |
71 | m_rangeMin = minValue; | |
72 | ||
73 | m_pageSize = (int)((maxValue-minValue)/10); | |
74 | ||
75 | // our styles are redundant: wxSL_LEFT/RIGHT imply wxSL_VERTICAL and | |
76 | // wxSL_TOP/BOTTOM imply wxSL_HORIZONTAL, but for backwards compatibility | |
77 | // reasons we can't really change it, instead try to infer the orientation | |
78 | // from the flags given to us here | |
79 | switch ( style & (wxSL_LEFT | wxSL_RIGHT | wxSL_TOP | wxSL_BOTTOM) ) | |
80 | { | |
81 | case wxSL_LEFT: | |
82 | case wxSL_RIGHT: | |
83 | style |= wxSL_VERTICAL; | |
84 | break; | |
85 | ||
86 | case wxSL_TOP: | |
87 | case wxSL_BOTTOM: | |
88 | style |= wxSL_HORIZONTAL; | |
89 | break; | |
90 | ||
91 | case 0: | |
92 | default: | |
93 | // no specific direction, do we have at least the orientation? | |
94 | if ( !(style & (wxSL_HORIZONTAL | wxSL_VERTICAL)) ) | |
95 | // no: choose default | |
96 | style |= wxSL_BOTTOM | wxSL_HORIZONTAL; | |
97 | break; | |
98 | } | |
99 | ||
100 | wxASSERT_MSG( !(style & wxSL_VERTICAL) || !(style & wxSL_HORIZONTAL), | |
101 | _T("incompatible slider direction and orientation") ); | |
102 | ||
103 | if ( !wxControl::Create(parent, id, pos, size, style, validator, name) ) | |
104 | return false; | |
105 | ||
106 | Rect bounds = wxMacGetBoundsForControl( this , pos , size ) ; | |
107 | ||
108 | // NB: (RN) Ticks here are sometimes off in the GUI if there | |
109 | // is not as many ticks as there are values | |
110 | // | |
111 | UInt16 tickMarks = 0 ; | |
112 | if ( style & wxSL_AUTOTICKS ) | |
113 | tickMarks = (maxValue - minValue) + 1; //+1 for the 0 value | |
114 | ||
115 | // keep the number of tickmarks from becoming unwieldly | |
116 | while (tickMarks > 20) | |
117 | tickMarks /= 5; | |
118 | ||
119 | m_peer = new wxMacControl( this ); | |
120 | verify_noerr ( CreateSliderControl( MAC_WXHWND(parent->MacGetTopLevelWindowRef()) , &bounds , | |
121 | value , minValue , maxValue , kControlSliderPointsDownOrRight , tickMarks , true /* liveTracking */ , | |
122 | GetwxMacLiveScrollbarActionProc() , m_peer->GetControlRefAddr() ) ); | |
123 | ||
124 | if (style & wxSL_VERTICAL) | |
125 | SetSizeHints(10, -1, 10, -1); // Forces SetSize to use the proper width | |
126 | else | |
127 | SetSizeHints(-1, 10, -1, 10); // Forces SetSize to use the proper height | |
128 | ||
129 | // NB! SetSizeHints is overloaded by wxSlider and will substitute 10 with the | |
130 | // proper dimensions, it also means other people cannot bugger the slider with | |
131 | // other values | |
132 | ||
133 | if (style & wxSL_LABELS) | |
134 | { | |
135 | m_macMinimumStatic = new wxStaticText( parent, wxID_ANY, wxEmptyString ); | |
136 | m_macMaximumStatic = new wxStaticText( parent, wxID_ANY, wxEmptyString ); | |
137 | m_macValueStatic = new wxStaticText( parent, wxID_ANY, wxEmptyString ); | |
138 | } | |
139 | ||
140 | SetRange(minValue, maxValue); | |
141 | SetValue(value); | |
142 | ||
143 | MacPostControlCreate(pos,size) ; | |
144 | ||
145 | return true; | |
146 | } | |
147 | ||
148 | wxSlider::~wxSlider() | |
149 | { | |
150 | // this is a special case, as we had to add windows as siblings we are | |
151 | // responsible for their disposal, but only if we are not part of a DestroyAllChildren | |
152 | if ( m_parent && !m_parent->IsBeingDeleted() ) | |
153 | { | |
154 | delete m_macMinimumStatic ; | |
155 | delete m_macMaximumStatic ; | |
156 | delete m_macValueStatic ; | |
157 | } | |
158 | } | |
159 | ||
160 | int wxSlider::GetValue() const | |
161 | { | |
162 | // We may need to invert the value returned by the widget | |
163 | return ValueInvertOrNot( m_peer->GetValue() ) ; | |
164 | } | |
165 | ||
166 | void wxSlider::SetValue(int value) | |
167 | { | |
168 | if ( m_macValueStatic ) | |
169 | { | |
170 | wxString valuestring; | |
171 | valuestring.Printf( wxT("%d") , value ); | |
172 | m_macValueStatic->SetLabel( valuestring ); | |
173 | } | |
174 | ||
175 | // We only invert for the setting of the actual native widget | |
176 | m_peer->SetValue( ValueInvertOrNot ( value ) ) ; | |
177 | } | |
178 | ||
179 | void wxSlider::SetRange(int minValue, int maxValue) | |
180 | { | |
181 | wxString value; | |
182 | ||
183 | m_rangeMin = minValue; | |
184 | m_rangeMax = maxValue; | |
185 | ||
186 | m_peer->SetMinimum( m_rangeMin); | |
187 | m_peer->SetMaximum( m_rangeMax); | |
188 | ||
189 | if (m_macMinimumStatic) | |
190 | { | |
191 | value.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMin ) ); | |
192 | m_macMinimumStatic->SetLabel(value); | |
193 | } | |
194 | ||
195 | if (m_macMaximumStatic) | |
196 | { | |
197 | value.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMax ) ); | |
198 | m_macMaximumStatic->SetLabel(value); | |
199 | } | |
200 | ||
201 | SetValue(m_rangeMin); | |
202 | } | |
203 | ||
204 | // For trackbars only | |
205 | void wxSlider::SetTickFreq(int n, int pos) | |
206 | { | |
207 | // TODO | |
208 | m_tickFreq = n; | |
209 | } | |
210 | ||
211 | void wxSlider::SetPageSize(int pageSize) | |
212 | { | |
213 | // TODO | |
214 | m_pageSize = pageSize; | |
215 | } | |
216 | ||
217 | int wxSlider::GetPageSize() const | |
218 | { | |
219 | return m_pageSize; | |
220 | } | |
221 | ||
222 | void wxSlider::ClearSel() | |
223 | { | |
224 | // TODO | |
225 | } | |
226 | ||
227 | void wxSlider::ClearTicks() | |
228 | { | |
229 | // TODO | |
230 | } | |
231 | ||
232 | void wxSlider::SetLineSize(int lineSize) | |
233 | { | |
234 | m_lineSize = lineSize; | |
235 | // TODO | |
236 | } | |
237 | ||
238 | int wxSlider::GetLineSize() const | |
239 | { | |
240 | // TODO | |
241 | return 0; | |
242 | } | |
243 | ||
244 | int wxSlider::GetSelEnd() const | |
245 | { | |
246 | // TODO | |
247 | return 0; | |
248 | } | |
249 | ||
250 | int wxSlider::GetSelStart() const | |
251 | { | |
252 | // TODO | |
253 | return 0; | |
254 | } | |
255 | ||
256 | void wxSlider::SetSelection(int minPos, int maxPos) | |
257 | { | |
258 | // TODO | |
259 | } | |
260 | ||
261 | void wxSlider::SetThumbLength(int len) | |
262 | { | |
263 | // TODO | |
264 | } | |
265 | ||
266 | int wxSlider::GetThumbLength() const | |
267 | { | |
268 | // TODO | |
269 | return 0; | |
270 | } | |
271 | ||
272 | void wxSlider::SetTick(int tickPos) | |
273 | { | |
274 | // TODO | |
275 | } | |
276 | ||
277 | void wxSlider::Command (wxCommandEvent & event) | |
278 | { | |
279 | SetValue(event.GetInt()); | |
280 | ProcessCommand(event); | |
281 | } | |
282 | ||
283 | void wxSlider::MacHandleControlClick( WXWidget control , wxInt16 controlpart, bool mouseStillDown ) | |
284 | { | |
285 | // Whatever the native value is, we may need to invert it for calling | |
286 | // SetValue and putting the possibly inverted value in the event | |
287 | SInt16 value = ValueInvertOrNot ( m_peer->GetValue() ) ; | |
288 | ||
289 | SetValue( value ) ; | |
290 | ||
291 | wxEventType scrollEvent = wxEVT_NULL ; | |
292 | ||
293 | scrollEvent = wxEVT_SCROLL_THUMBTRACK; | |
294 | ||
295 | wxScrollEvent event(scrollEvent, m_windowId); | |
296 | event.SetPosition(value); | |
297 | event.SetEventObject( this ); | |
298 | GetEventHandler()->ProcessEvent(event); | |
299 | ||
300 | wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, m_windowId ); | |
301 | cevent.SetInt( value ); | |
302 | cevent.SetEventObject( this ); | |
303 | ||
304 | GetEventHandler()->ProcessEvent( cevent ); | |
305 | } | |
306 | ||
307 | wxInt32 wxSlider::MacControlHit( WXEVENTHANDLERREF handler , WXEVENTREF mevent ) | |
308 | { | |
309 | // Whatever the native value is, we may need to invert it for calling | |
310 | // SetValue and putting the possibly inverted value in the event | |
311 | SInt16 value = ValueInvertOrNot ( m_peer->GetValue() ) ; | |
312 | ||
313 | SetValue( value ) ; | |
314 | ||
315 | wxEventType scrollEvent = wxEVT_NULL ; | |
316 | ||
317 | scrollEvent = wxEVT_SCROLL_THUMBRELEASE; | |
318 | ||
319 | wxScrollEvent event(scrollEvent, m_windowId); | |
320 | event.SetPosition(value); | |
321 | event.SetEventObject( this ); | |
322 | GetEventHandler()->ProcessEvent(event); | |
323 | ||
324 | wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, m_windowId ); | |
325 | cevent.SetInt( value ); | |
326 | cevent.SetEventObject( this ); | |
327 | ||
328 | GetEventHandler()->ProcessEvent( cevent ); | |
329 | ||
330 | return noErr; | |
331 | } | |
332 | ||
333 | // This is overloaded in wxSlider so that the proper width/height will always be used | |
334 | // for the slider different values would cause redrawing and mouse detection problems | |
335 | // | |
336 | void wxSlider::DoSetSizeHints( int minW, int minH, | |
337 | int maxW , int maxH , | |
338 | int incW , int incH ) | |
339 | { | |
340 | wxSize size = GetBestSize(); | |
341 | ||
342 | if (GetWindowStyle() & wxSL_VERTICAL) | |
343 | wxWindow::DoSetSizeHints(size.x, minH, size.x, maxH, incW, incH); | |
344 | else | |
345 | wxWindow::DoSetSizeHints(minW, size.y, maxW, size.y, incW, incH); | |
346 | } | |
347 | ||
348 | wxSize wxSlider::DoGetBestSize() const | |
349 | { | |
350 | wxSize size; | |
351 | int textwidth, textheight; | |
352 | int mintwidth, mintheight; | |
353 | int maxtwidth, maxtheight; | |
354 | ||
355 | textwidth = textheight = 0; | |
356 | mintwidth = mintheight = 0; | |
357 | maxtwidth = maxtheight = 0; | |
358 | ||
359 | if (GetWindowStyle() & wxSL_LABELS) | |
360 | { | |
361 | wxString text; | |
362 | ||
363 | // Get maximum text label width and height | |
364 | text.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMin ) ); | |
365 | GetTextExtent(text, &mintwidth, &mintheight); | |
366 | text.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMax ) ); | |
367 | GetTextExtent(text, &maxtwidth, &maxtheight); | |
368 | ||
369 | if (maxtheight > mintheight) | |
370 | textheight = maxtheight; | |
371 | else | |
372 | textheight = mintheight; | |
373 | ||
374 | if (maxtwidth > mintwidth) | |
375 | textwidth = maxtwidth; | |
376 | else | |
377 | textwidth = mintwidth; | |
378 | } | |
379 | ||
380 | if (GetWindowStyle() & wxSL_VERTICAL) | |
381 | { | |
382 | if (GetWindowStyle() & wxSL_AUTOTICKS) | |
383 | size.x = wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS; | |
384 | else | |
385 | size.x = wxSLIDER_DIMENSIONACROSS_ARROW; | |
386 | ||
387 | if (GetWindowStyle() & wxSL_LABELS) | |
388 | size.x += textwidth + wxSLIDER_BORDERTEXT; | |
389 | ||
390 | size.y = 150; | |
391 | } | |
392 | else | |
393 | { | |
394 | if (GetWindowStyle() & wxSL_AUTOTICKS) | |
395 | size.y = wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS; | |
396 | else | |
397 | size.y = wxSLIDER_DIMENSIONACROSS_ARROW; | |
398 | ||
399 | size.x = 150; | |
400 | ||
401 | if (GetWindowStyle() & wxSL_LABELS) | |
402 | { | |
403 | size.y += textheight + wxSLIDER_BORDERTEXT; | |
404 | size.x += (mintwidth / 2) + (maxtwidth / 2); | |
405 | } | |
406 | } | |
407 | ||
408 | return size; | |
409 | } | |
410 | ||
411 | void wxSlider::DoSetSize(int x, int y, int w, int h, int sizeFlags) | |
412 | { | |
413 | int xborder, yborder; | |
414 | int minValWidth, maxValWidth, textheight; | |
415 | int sliderBreadth; | |
416 | int width = w; | |
417 | ||
418 | xborder = yborder = 0; | |
419 | ||
420 | if (GetWindowStyle() & wxSL_LABELS) | |
421 | { | |
422 | wxString text; | |
423 | int ht, valValWidth; | |
424 | ||
425 | // Get maximum text label width and height | |
426 | text.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMin ) ); | |
427 | GetTextExtent(text, &minValWidth, &textheight); | |
428 | text.Printf(wxT("%d"), ValueInvertOrNot( m_rangeMax ) ); | |
429 | GetTextExtent(text, &maxValWidth, &ht); | |
430 | ||
431 | if (ht > textheight) | |
432 | textheight = ht; | |
433 | ||
434 | if (GetWindowStyle() & wxSL_HORIZONTAL) | |
435 | { | |
436 | if ( m_macMinimumStatic ) | |
437 | { | |
438 | w -= minValWidth / 2; | |
439 | x += minValWidth / 2; | |
440 | } | |
441 | ||
442 | if ( m_macMaximumStatic ) | |
443 | w -= maxValWidth / 2; | |
444 | } | |
445 | ||
446 | // Labels have this control's parent as their parent | |
447 | // so if this control is not at 0,0 relative to the parent | |
448 | // the labels need to know the position of this control | |
449 | // relative to its parent in order to size properly, so | |
450 | // move the control first so we can use GetPosition() | |
451 | wxControl::DoSetSize( x, y , w , h , sizeFlags ); | |
452 | ||
453 | if (GetWindowStyle() & wxSL_VERTICAL) | |
454 | // If vertical, use current value | |
455 | text.Printf(wxT("%d"), (int)m_peer->GetValue()); | |
456 | else | |
457 | // Use max so that the current value doesn't drift as centering would need to change | |
458 | text.Printf(wxT("%d"), m_rangeMax); | |
459 | ||
460 | GetTextExtent(text, &valValWidth, &ht); | |
461 | ||
462 | yborder = textheight + wxSLIDER_BORDERTEXT; | |
463 | ||
464 | // Get slider breadth | |
465 | if (GetWindowStyle() & wxSL_AUTOTICKS) | |
466 | sliderBreadth = wxSLIDER_DIMENSIONACROSS_WITHTICKMARKS; | |
467 | else | |
468 | sliderBreadth = wxSLIDER_DIMENSIONACROSS_ARROW; | |
469 | ||
470 | if (GetWindowStyle() & wxSL_VERTICAL) | |
471 | { | |
472 | h = h - yborder; | |
473 | ||
474 | if ( m_macMinimumStatic ) | |
475 | m_macMinimumStatic->Move(GetPosition().x + sliderBreadth + wxSLIDER_BORDERTEXT, GetPosition().y + h - yborder); | |
476 | if ( m_macMaximumStatic ) | |
477 | m_macMaximumStatic->Move(GetPosition().x + sliderBreadth + wxSLIDER_BORDERTEXT, GetPosition().y + 0); | |
478 | if ( m_macValueStatic ) | |
479 | m_macValueStatic->Move(GetPosition().x + sliderBreadth + wxSLIDER_BORDERTEXT, GetPosition().y + (h / 2) - (ht / 2)); | |
480 | } | |
481 | else | |
482 | { | |
483 | if ( m_macMinimumStatic ) | |
484 | m_macMinimumStatic->Move(GetPosition().x, GetPosition().y + sliderBreadth + wxSLIDER_BORDERTEXT); | |
485 | if ( m_macMaximumStatic ) | |
486 | m_macMaximumStatic->Move(GetPosition().x + w - maxValWidth, GetPosition().y + sliderBreadth + wxSLIDER_BORDERTEXT); | |
487 | if ( m_macValueStatic ) | |
488 | m_macValueStatic->Move(GetPosition().x + (w / 2) - (valValWidth / 2), GetPosition().y + sliderBreadth + wxSLIDER_BORDERTEXT); | |
489 | } | |
490 | } | |
491 | ||
492 | // yet another hack since this is a composite control | |
493 | // when wxSlider has it's size hardcoded, we're not allowed to | |
494 | // change the size. But when the control has labels, we DO need | |
495 | // to resize the internal Mac control to accommodate the text labels. | |
496 | // We need to trick the wxWidgets resize mechanism so that we can | |
497 | // resize the slider part of the control ONLY. | |
498 | ||
499 | // TODO: Can all of this code go in the conditional wxSL_LABELS block? | |
500 | ||
501 | int minWidth = m_minWidth; | |
502 | ||
503 | if (GetWindowStyle() & wxSL_LABELS) | |
504 | { | |
505 | // make sure we don't allow the entire control to be resized accidently | |
506 | if (width == GetSize().x) | |
507 | m_minWidth = -1; | |
508 | } | |
509 | ||
510 | // If the control has labels, we still need to call this again because | |
511 | // the labels alter the control's w and h values. | |
512 | wxControl::DoSetSize( x, y, w, h, sizeFlags ); | |
513 | ||
514 | m_minWidth = minWidth; | |
515 | } | |
516 | ||
517 | void wxSlider::DoMoveWindow(int x, int y, int width, int height) | |
518 | { | |
519 | wxControl::DoMoveWindow( x, y, width, height ); | |
520 | } | |
521 | ||
522 | // Common processing to invert slider values based on wxSL_INVERSE | |
523 | int wxSlider::ValueInvertOrNot(int value) const | |
524 | { | |
525 | int result = 0; | |
526 | ||
527 | if (m_windowStyle & wxSL_VERTICAL) | |
528 | { | |
529 | // The reason for the backwards logic is that Mac's vertical sliders are | |
530 | // inverted compared to Windows and GTK, hence we want inversion to be the | |
531 | // default, and if wxSL_INVERSE is set, then we do not invert (use native) | |
532 | if (m_windowStyle & wxSL_INVERSE) | |
533 | result = value; | |
534 | else | |
535 | result = (m_rangeMax + m_rangeMin) - value; | |
536 | } | |
537 | else // normal logic applies to HORIZONTAL sliders | |
538 | { | |
539 | result = wxSliderBase::ValueInvertOrNot(value); | |
540 | } | |
541 | ||
542 | return result; | |
543 | } | |
544 | ||
545 | #endif // wxUSE_SLIDER |