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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: msw/button.cpp | |
3 | // Purpose: wxButton | |
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 | // For compilers that support precompilation, includes "wx.h". | |
21 | #include "wx/wxprec.h" | |
22 | ||
23 | #ifdef __BORLANDC__ | |
24 | #pragma hdrstop | |
25 | #endif | |
26 | ||
27 | #if wxUSE_BUTTON | |
28 | ||
29 | #ifndef WX_PRECOMP | |
30 | #include "wx/app.h" | |
31 | #include "wx/button.h" | |
32 | #include "wx/brush.h" | |
33 | #include "wx/panel.h" | |
34 | #include "wx/bmpbuttn.h" | |
35 | #include "wx/settings.h" | |
36 | #include "wx/dcscreen.h" | |
37 | #include "wx/dcclient.h" | |
38 | #endif | |
39 | ||
40 | #include "wx/stockitem.h" | |
41 | #include "wx/tokenzr.h" | |
42 | #include "wx/msw/private.h" | |
43 | ||
44 | // ---------------------------------------------------------------------------- | |
45 | // macros | |
46 | // ---------------------------------------------------------------------------- | |
47 | ||
48 | #if wxUSE_EXTENDED_RTTI | |
49 | ||
50 | WX_DEFINE_FLAGS( wxButtonStyle ) | |
51 | ||
52 | wxBEGIN_FLAGS( wxButtonStyle ) | |
53 | // new style border flags, we put them first to | |
54 | // use them for streaming out | |
55 | wxFLAGS_MEMBER(wxBORDER_SIMPLE) | |
56 | wxFLAGS_MEMBER(wxBORDER_SUNKEN) | |
57 | wxFLAGS_MEMBER(wxBORDER_DOUBLE) | |
58 | wxFLAGS_MEMBER(wxBORDER_RAISED) | |
59 | wxFLAGS_MEMBER(wxBORDER_STATIC) | |
60 | wxFLAGS_MEMBER(wxBORDER_NONE) | |
61 | ||
62 | // old style border flags | |
63 | wxFLAGS_MEMBER(wxSIMPLE_BORDER) | |
64 | wxFLAGS_MEMBER(wxSUNKEN_BORDER) | |
65 | wxFLAGS_MEMBER(wxDOUBLE_BORDER) | |
66 | wxFLAGS_MEMBER(wxRAISED_BORDER) | |
67 | wxFLAGS_MEMBER(wxSTATIC_BORDER) | |
68 | wxFLAGS_MEMBER(wxBORDER) | |
69 | ||
70 | // standard window styles | |
71 | wxFLAGS_MEMBER(wxTAB_TRAVERSAL) | |
72 | wxFLAGS_MEMBER(wxCLIP_CHILDREN) | |
73 | wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW) | |
74 | wxFLAGS_MEMBER(wxWANTS_CHARS) | |
75 | wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE) | |
76 | wxFLAGS_MEMBER(wxALWAYS_SHOW_SB ) | |
77 | wxFLAGS_MEMBER(wxVSCROLL) | |
78 | wxFLAGS_MEMBER(wxHSCROLL) | |
79 | ||
80 | wxFLAGS_MEMBER(wxBU_LEFT) | |
81 | wxFLAGS_MEMBER(wxBU_RIGHT) | |
82 | wxFLAGS_MEMBER(wxBU_TOP) | |
83 | wxFLAGS_MEMBER(wxBU_BOTTOM) | |
84 | wxFLAGS_MEMBER(wxBU_EXACTFIT) | |
85 | wxEND_FLAGS( wxButtonStyle ) | |
86 | ||
87 | IMPLEMENT_DYNAMIC_CLASS_XTI(wxButton, wxControl,"wx/button.h") | |
88 | ||
89 | wxBEGIN_PROPERTIES_TABLE(wxButton) | |
90 | wxEVENT_PROPERTY( Click , wxEVT_COMMAND_BUTTON_CLICKED , wxCommandEvent) | |
91 | ||
92 | wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) | |
93 | wxPROPERTY( Label, wxString , SetLabel, GetLabel, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") ) | |
94 | ||
95 | wxPROPERTY_FLAGS( WindowStyle , wxButtonStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style | |
96 | ||
97 | wxEND_PROPERTIES_TABLE() | |
98 | ||
99 | wxBEGIN_HANDLERS_TABLE(wxButton) | |
100 | wxEND_HANDLERS_TABLE() | |
101 | ||
102 | wxCONSTRUCTOR_6( wxButton , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle ) | |
103 | ||
104 | ||
105 | #else | |
106 | IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl) | |
107 | #endif | |
108 | ||
109 | // this macro tries to adjust the default button height to a reasonable value | |
110 | // using the char height as the base | |
111 | #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10) | |
112 | ||
113 | // ============================================================================ | |
114 | // implementation | |
115 | // ============================================================================ | |
116 | ||
117 | // ---------------------------------------------------------------------------- | |
118 | // creation/destruction | |
119 | // ---------------------------------------------------------------------------- | |
120 | ||
121 | bool wxButton::Create(wxWindow *parent, | |
122 | wxWindowID id, | |
123 | const wxString& lbl, | |
124 | const wxPoint& pos, | |
125 | const wxSize& size, | |
126 | long style, | |
127 | const wxValidator& validator, | |
128 | const wxString& name) | |
129 | { | |
130 | wxString label(lbl); | |
131 | if (label.empty() && wxIsStockID(id)) | |
132 | { | |
133 | // On Windows, some buttons aren't supposed to have | |
134 | // mnemonics, so strip them out. | |
135 | ||
136 | label = wxGetStockLabel(id | |
137 | #if defined(__WXMSW__) || defined(__WXWINCE__) | |
138 | , ( id != wxID_OK && | |
139 | id != wxID_CANCEL && | |
140 | id != wxID_CLOSE ) | |
141 | #endif | |
142 | ); | |
143 | } | |
144 | ||
145 | if ( !CreateControl(parent, id, pos, size, style, validator, name) ) | |
146 | return false; | |
147 | ||
148 | WXDWORD exstyle; | |
149 | WXDWORD msStyle = MSWGetStyle(style, &exstyle); | |
150 | ||
151 | #ifdef __WIN32__ | |
152 | // if the label contains several lines we must explicitly tell the button | |
153 | // about it or it wouldn't draw it correctly ("\n"s would just appear as | |
154 | // black boxes) | |
155 | // | |
156 | // NB: we do it here and not in MSWGetStyle() because we need the label | |
157 | // value and m_label is not set yet when MSWGetStyle() is called; | |
158 | // besides changing BS_MULTILINE during run-time is pointless anyhow | |
159 | if ( label.find(_T('\n')) != wxString::npos ) | |
160 | { | |
161 | msStyle |= BS_MULTILINE; | |
162 | } | |
163 | #endif // __WIN32__ | |
164 | ||
165 | return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle); | |
166 | } | |
167 | ||
168 | wxButton::~wxButton() | |
169 | { | |
170 | } | |
171 | ||
172 | // ---------------------------------------------------------------------------- | |
173 | // flags | |
174 | // ---------------------------------------------------------------------------- | |
175 | ||
176 | WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const | |
177 | { | |
178 | // buttons never have an external border, they draw their own one | |
179 | WXDWORD msStyle = wxControl::MSWGetStyle | |
180 | ( | |
181 | (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle | |
182 | ); | |
183 | ||
184 | // we must use WS_CLIPSIBLINGS with the buttons or they would draw over | |
185 | // each other in any resizeable dialog which has more than one button in | |
186 | // the bottom | |
187 | msStyle |= WS_CLIPSIBLINGS; | |
188 | ||
189 | #ifdef __WIN32__ | |
190 | // don't use "else if" here: weird as it is, but you may combine wxBU_LEFT | |
191 | // and wxBU_RIGHT to get BS_CENTER! | |
192 | if ( style & wxBU_LEFT ) | |
193 | msStyle |= BS_LEFT; | |
194 | if ( style & wxBU_RIGHT ) | |
195 | msStyle |= BS_RIGHT; | |
196 | if ( style & wxBU_TOP ) | |
197 | msStyle |= BS_TOP; | |
198 | if ( style & wxBU_BOTTOM ) | |
199 | msStyle |= BS_BOTTOM; | |
200 | #ifndef __WXWINCE__ | |
201 | // flat 2d buttons | |
202 | if ( style & wxNO_BORDER ) | |
203 | msStyle |= BS_FLAT; | |
204 | #endif // __WXWINCE__ | |
205 | #endif // __WIN32__ | |
206 | ||
207 | return msStyle; | |
208 | } | |
209 | ||
210 | // ---------------------------------------------------------------------------- | |
211 | // size management including autosizing | |
212 | // ---------------------------------------------------------------------------- | |
213 | ||
214 | wxSize wxButton::DoGetBestSize() const | |
215 | { | |
216 | wxClientDC dc(wx_const_cast(wxButton *, this)); | |
217 | dc.SetFont(GetFont()); | |
218 | ||
219 | wxCoord wBtn, | |
220 | hBtn; | |
221 | dc.GetMultiLineTextExtent(wxStripMenuCodes(GetLabel()), &wBtn, &hBtn); | |
222 | ||
223 | // add a margin -- the button is wider than just its label | |
224 | wBtn += 3*GetCharWidth(); | |
225 | hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hBtn); | |
226 | ||
227 | // all buttons have at least the standard size unless the user explicitly | |
228 | // wants them to be of smaller size and used wxBU_EXACTFIT style when | |
229 | // creating the button | |
230 | if ( !HasFlag(wxBU_EXACTFIT) ) | |
231 | { | |
232 | wxSize sz = GetDefaultSize(); | |
233 | if (wBtn > sz.x) | |
234 | sz.x = wBtn; | |
235 | if (hBtn > sz.y) | |
236 | sz.y = hBtn; | |
237 | ||
238 | return sz; | |
239 | } | |
240 | ||
241 | wxSize best(wBtn, hBtn); | |
242 | CacheBestSize(best); | |
243 | return best; | |
244 | } | |
245 | ||
246 | /* static */ | |
247 | wxSize wxButtonBase::GetDefaultSize() | |
248 | { | |
249 | static wxSize s_sizeBtn; | |
250 | ||
251 | if ( s_sizeBtn.x == 0 ) | |
252 | { | |
253 | wxScreenDC dc; | |
254 | dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT)); | |
255 | ||
256 | // the size of a standard button in the dialog units is 50x14, | |
257 | // translate this to pixels | |
258 | // NB1: the multipliers come from the Windows convention | |
259 | // NB2: the extra +1/+2 were needed to get the size be the same as the | |
260 | // size of the buttons in the standard dialog - I don't know how | |
261 | // this happens, but on my system this size is 75x23 in pixels and | |
262 | // 23*8 isn't even divisible by 14... Would be nice to understand | |
263 | // why these constants are needed though! | |
264 | s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4; | |
265 | s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8; | |
266 | } | |
267 | ||
268 | return s_sizeBtn; | |
269 | } | |
270 | ||
271 | // ---------------------------------------------------------------------------- | |
272 | // default button handling | |
273 | // ---------------------------------------------------------------------------- | |
274 | ||
275 | /* | |
276 | "Everything you ever wanted to know about the default buttons" or "Why do we | |
277 | have to do all this?" | |
278 | ||
279 | In MSW the default button should be activated when the user presses Enter | |
280 | and the current control doesn't process Enter itself somehow. This is | |
281 | handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID | |
282 | Another aspect of "defaultness" is that the default button has different | |
283 | appearance: this is due to BS_DEFPUSHBUTTON style which is completely | |
284 | separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should | |
285 | be unset if our parent window is not active so it should be unset whenever | |
286 | we lose activation and set back when we regain it. | |
287 | ||
288 | Final complication is that when a button is active, it should be the default | |
289 | one, i.e. pressing Enter on a button always activates it and not another | |
290 | one. | |
291 | ||
292 | We handle this by maintaining a permanent and a temporary default items in | |
293 | wxControlContainer (both may be NULL). When a button becomes the current | |
294 | control (i.e. gets focus) it sets itself as the temporary default which | |
295 | ensures that it has the right appearance and that Enter will be redirected | |
296 | to it. When the button loses focus, it unsets the temporary default and so | |
297 | the default item will be the permanent default -- that is the default button | |
298 | if any had been set or none otherwise, which is just what we want. | |
299 | ||
300 | NB: all this is quite complicated by now and the worst is that normally | |
301 | it shouldn't be necessary at all as for the normal Windows programs | |
302 | DefWindowProc() and IsDialogMessage() take care of all this | |
303 | automatically -- however in wxWidgets programs this doesn't work for | |
304 | nested hierarchies (i.e. a notebook inside a notebook) for unknown | |
305 | reason and so we have to reproduce all this code ourselves. It would be | |
306 | very nice if we could avoid doing it. | |
307 | */ | |
308 | ||
309 | // set this button as the (permanently) default one in its panel | |
310 | void wxButton::SetDefault() | |
311 | { | |
312 | wxWindow *parent = GetParent(); | |
313 | ||
314 | wxCHECK_RET( parent, _T("button without parent?") ); | |
315 | ||
316 | // set this one as the default button both for wxWidgets ... | |
317 | wxWindow *winOldDefault = parent->SetDefaultItem(this); | |
318 | ||
319 | // ... and Windows | |
320 | SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); | |
321 | SetDefaultStyle(this, true); | |
322 | } | |
323 | ||
324 | // set this button as being currently default | |
325 | void wxButton::SetTmpDefault() | |
326 | { | |
327 | wxWindow *parent = GetParent(); | |
328 | ||
329 | wxCHECK_RET( parent, _T("button without parent?") ); | |
330 | ||
331 | wxWindow *winOldDefault = parent->GetDefaultItem(); | |
332 | parent->SetTmpDefaultItem(this); | |
333 | ||
334 | SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false); | |
335 | SetDefaultStyle(this, true); | |
336 | } | |
337 | ||
338 | // unset this button as currently default, it may still stay permanent default | |
339 | void wxButton::UnsetTmpDefault() | |
340 | { | |
341 | wxWindow *parent = GetParent(); | |
342 | ||
343 | wxCHECK_RET( parent, _T("button without parent?") ); | |
344 | ||
345 | parent->SetTmpDefaultItem(NULL); | |
346 | ||
347 | wxWindow *winOldDefault = parent->GetDefaultItem(); | |
348 | ||
349 | SetDefaultStyle(this, false); | |
350 | SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), true); | |
351 | } | |
352 | ||
353 | /* static */ | |
354 | void | |
355 | wxButton::SetDefaultStyle(wxButton *btn, bool on) | |
356 | { | |
357 | // we may be called with NULL pointer -- simpler to do the check here than | |
358 | // in the caller which does wxDynamicCast() | |
359 | if ( !btn ) | |
360 | return; | |
361 | ||
362 | // first, let DefDlgProc() know about the new default button | |
363 | if ( on ) | |
364 | { | |
365 | // we shouldn't set BS_DEFPUSHBUTTON for any button if we don't have | |
366 | // focus at all any more | |
367 | if ( !wxTheApp->IsActive() ) | |
368 | return; | |
369 | ||
370 | // look for a panel-like window | |
371 | wxWindow *win = btn->GetParent(); | |
372 | while ( win && !win->HasFlag(wxTAB_TRAVERSAL) ) | |
373 | win = win->GetParent(); | |
374 | ||
375 | if ( win ) | |
376 | { | |
377 | ::SendMessage(GetHwndOf(win), DM_SETDEFID, btn->GetId(), 0L); | |
378 | ||
379 | // sending DM_SETDEFID also changes the button style to | |
380 | // BS_DEFPUSHBUTTON so there is nothing more to do | |
381 | } | |
382 | } | |
383 | ||
384 | // then also change the style as needed | |
385 | long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE); | |
386 | if ( !(style & BS_DEFPUSHBUTTON) == on ) | |
387 | { | |
388 | // don't do it with the owner drawn buttons because it will | |
389 | // reset BS_OWNERDRAW style bit too (as BS_OWNERDRAW & | |
390 | // BS_DEFPUSHBUTTON != 0)! | |
391 | if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) | |
392 | { | |
393 | ::SendMessage(GetHwndOf(btn), BM_SETSTYLE, | |
394 | on ? style | BS_DEFPUSHBUTTON | |
395 | : style & ~BS_DEFPUSHBUTTON, | |
396 | 1L /* redraw */); | |
397 | } | |
398 | else // owner drawn | |
399 | { | |
400 | // redraw the button - it will notice itself that it's | |
401 | // [not] the default one [any longer] | |
402 | btn->Refresh(); | |
403 | } | |
404 | } | |
405 | //else: already has correct style | |
406 | } | |
407 | ||
408 | // ---------------------------------------------------------------------------- | |
409 | // helpers | |
410 | // ---------------------------------------------------------------------------- | |
411 | ||
412 | bool wxButton::SendClickEvent() | |
413 | { | |
414 | wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId()); | |
415 | event.SetEventObject(this); | |
416 | ||
417 | return ProcessCommand(event); | |
418 | } | |
419 | ||
420 | void wxButton::Command(wxCommandEvent & event) | |
421 | { | |
422 | ProcessCommand(event); | |
423 | } | |
424 | ||
425 | // ---------------------------------------------------------------------------- | |
426 | // event/message handlers | |
427 | // ---------------------------------------------------------------------------- | |
428 | ||
429 | bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) | |
430 | { | |
431 | bool processed = false; | |
432 | switch ( param ) | |
433 | { | |
434 | // NOTE: Apparently older versions (NT 4?) of the common controls send | |
435 | // BN_DOUBLECLICKED but not a second BN_CLICKED for owner-drawn | |
436 | // buttons, so in order to send two EVT_BUTTON events we should | |
437 | // catch both types. Currently (Feb 2003) up-to-date versions of | |
438 | // win98, win2k and winXP all send two BN_CLICKED messages for | |
439 | // all button types, so we don't catch BN_DOUBLECLICKED anymore | |
440 | // in order to not get 3 EVT_BUTTON events. If this is a problem | |
441 | // then we need to figure out which version of the comctl32 changed | |
442 | // this behaviour and test for it. | |
443 | ||
444 | case 1: // message came from an accelerator | |
445 | case BN_CLICKED: // normal buttons send this | |
446 | processed = SendClickEvent(); | |
447 | break; | |
448 | } | |
449 | ||
450 | return processed; | |
451 | } | |
452 | ||
453 | WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) | |
454 | { | |
455 | // when we receive focus, we want to temporarily become the default button in | |
456 | // our parent panel so that pressing "Enter" would activate us -- and when | |
457 | // losing it we should restore the previous default button as well | |
458 | if ( nMsg == WM_SETFOCUS ) | |
459 | { | |
460 | SetTmpDefault(); | |
461 | ||
462 | // let the default processing take place too | |
463 | } | |
464 | else if ( nMsg == WM_KILLFOCUS ) | |
465 | { | |
466 | UnsetTmpDefault(); | |
467 | } | |
468 | else if ( nMsg == WM_LBUTTONDBLCLK ) | |
469 | { | |
470 | // emulate a click event to force an owner-drawn button to change its | |
471 | // appearance - without this, it won't do it | |
472 | (void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam); | |
473 | ||
474 | // and continue with processing the message normally as well | |
475 | } | |
476 | ||
477 | // let the base class do all real processing | |
478 | return wxControl::MSWWindowProc(nMsg, wParam, lParam); | |
479 | } | |
480 | ||
481 | // ---------------------------------------------------------------------------- | |
482 | // owner-drawn buttons support | |
483 | // ---------------------------------------------------------------------------- | |
484 | ||
485 | #ifdef __WIN32__ | |
486 | ||
487 | // drawing helpers | |
488 | ||
489 | static void DrawButtonText(HDC hdc, | |
490 | RECT *pRect, | |
491 | const wxString& text, | |
492 | COLORREF col) | |
493 | { | |
494 | COLORREF colOld = SetTextColor(hdc, col); | |
495 | int modeOld = SetBkMode(hdc, TRANSPARENT); | |
496 | ||
497 | if ( text.find(_T('\n')) != wxString::npos ) | |
498 | { | |
499 | // draw multiline label | |
500 | ||
501 | // first we need to compute its bounding rect | |
502 | RECT rc; | |
503 | ::CopyRect(&rc, pRect); | |
504 | ::DrawText(hdc, text, text.length(), &rc, DT_CENTER | DT_CALCRECT); | |
505 | ||
506 | // now center this rect inside the entire button area | |
507 | const LONG w = rc.right - rc.left; | |
508 | const LONG h = rc.bottom - rc.top; | |
509 | rc.left = (pRect->right - pRect->left)/2 - w/2; | |
510 | rc.right = rc.left+w; | |
511 | rc.top = (pRect->bottom - pRect->top)/2 - h/2; | |
512 | rc.bottom = rc.top+h; | |
513 | ||
514 | ::DrawText(hdc, text, text.length(), &rc, DT_CENTER); | |
515 | } | |
516 | else // single line label | |
517 | { | |
518 | // Note: we must have DT_SINGLELINE for DT_VCENTER to work. | |
519 | ::DrawText(hdc, text, text.length(), pRect, | |
520 | DT_SINGLELINE | DT_CENTER | DT_VCENTER); | |
521 | } | |
522 | ||
523 | SetBkMode(hdc, modeOld); | |
524 | SetTextColor(hdc, colOld); | |
525 | } | |
526 | ||
527 | static void DrawRect(HDC hdc, const RECT& r) | |
528 | { | |
529 | wxDrawLine(hdc, r.left, r.top, r.right, r.top); | |
530 | wxDrawLine(hdc, r.right, r.top, r.right, r.bottom); | |
531 | wxDrawLine(hdc, r.right, r.bottom, r.left, r.bottom); | |
532 | wxDrawLine(hdc, r.left, r.bottom, r.left, r.top); | |
533 | } | |
534 | ||
535 | void wxButton::MakeOwnerDrawn() | |
536 | { | |
537 | long style = GetWindowLong(GetHwnd(), GWL_STYLE); | |
538 | if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) | |
539 | { | |
540 | // make it so | |
541 | style |= BS_OWNERDRAW; | |
542 | SetWindowLong(GetHwnd(), GWL_STYLE, style); | |
543 | } | |
544 | } | |
545 | ||
546 | bool wxButton::SetBackgroundColour(const wxColour &colour) | |
547 | { | |
548 | if ( !wxControl::SetBackgroundColour(colour) ) | |
549 | { | |
550 | // nothing to do | |
551 | return false; | |
552 | } | |
553 | ||
554 | MakeOwnerDrawn(); | |
555 | ||
556 | Refresh(); | |
557 | ||
558 | return true; | |
559 | } | |
560 | ||
561 | bool wxButton::SetForegroundColour(const wxColour &colour) | |
562 | { | |
563 | if ( !wxControl::SetForegroundColour(colour) ) | |
564 | { | |
565 | // nothing to do | |
566 | return false; | |
567 | } | |
568 | ||
569 | MakeOwnerDrawn(); | |
570 | ||
571 | Refresh(); | |
572 | ||
573 | return true; | |
574 | } | |
575 | ||
576 | /* | |
577 | The button frame looks like this normally: | |
578 | ||
579 | WWWWWWWWWWWWWWWWWWB | |
580 | WHHHHHHHHHHHHHHHHGB W = white (HILIGHT) | |
581 | WH GB H = light grey (LIGHT) | |
582 | WH GB G = dark grey (SHADOW) | |
583 | WH GB B = black (DKSHADOW) | |
584 | WH GB | |
585 | WGGGGGGGGGGGGGGGGGB | |
586 | BBBBBBBBBBBBBBBBBBB | |
587 | ||
588 | When the button is selected, the button becomes like this (the total button | |
589 | size doesn't change): | |
590 | ||
591 | BBBBBBBBBBBBBBBBBBB | |
592 | BWWWWWWWWWWWWWWWWBB | |
593 | BWHHHHHHHHHHHHHHGBB | |
594 | BWH GBB | |
595 | BWH GBB | |
596 | BWGGGGGGGGGGGGGGGBB | |
597 | BBBBBBBBBBBBBBBBBBB | |
598 | BBBBBBBBBBBBBBBBBBB | |
599 | ||
600 | When the button is pushed (while selected) it is like: | |
601 | ||
602 | BBBBBBBBBBBBBBBBBBB | |
603 | BGGGGGGGGGGGGGGGGGB | |
604 | BG GB | |
605 | BG GB | |
606 | BG GB | |
607 | BG GB | |
608 | BGGGGGGGGGGGGGGGGGB | |
609 | BBBBBBBBBBBBBBBBBBB | |
610 | */ | |
611 | ||
612 | static void DrawButtonFrame(HDC hdc, const RECT& rectBtn, | |
613 | bool selected, bool pushed) | |
614 | { | |
615 | RECT r; | |
616 | CopyRect(&r, &rectBtn); | |
617 | ||
618 | HPEN hpenBlack = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DDKSHADOW)), | |
619 | hpenGrey = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW)), | |
620 | hpenLightGr = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DLIGHT)), | |
621 | hpenWhite = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT)); | |
622 | ||
623 | HPEN hpenOld = (HPEN)SelectObject(hdc, hpenBlack); | |
624 | ||
625 | r.right--; | |
626 | r.bottom--; | |
627 | ||
628 | if ( pushed ) | |
629 | { | |
630 | DrawRect(hdc, r); | |
631 | ||
632 | (void)SelectObject(hdc, hpenGrey); | |
633 | ::InflateRect(&r, -1, -1); | |
634 | ||
635 | DrawRect(hdc, r); | |
636 | } | |
637 | else // !pushed | |
638 | { | |
639 | if ( selected ) | |
640 | { | |
641 | DrawRect(hdc, r); | |
642 | ||
643 | ::InflateRect(&r, -1, -1); | |
644 | } | |
645 | ||
646 | wxDrawLine(hdc, r.left, r.bottom, r.right, r.bottom); | |
647 | wxDrawLine(hdc, r.right, r.bottom, r.right, r.top - 1); | |
648 | ||
649 | (void)SelectObject(hdc, hpenWhite); | |
650 | wxDrawLine(hdc, r.left, r.bottom - 1, r.left, r.top); | |
651 | wxDrawLine(hdc, r.left, r.top, r.right, r.top); | |
652 | ||
653 | (void)SelectObject(hdc, hpenLightGr); | |
654 | wxDrawLine(hdc, r.left + 1, r.bottom - 2, r.left + 1, r.top + 1); | |
655 | wxDrawLine(hdc, r.left + 1, r.top + 1, r.right - 1, r.top + 1); | |
656 | ||
657 | (void)SelectObject(hdc, hpenGrey); | |
658 | wxDrawLine(hdc, r.left + 1, r.bottom - 1, r.right - 1, r.bottom - 1); | |
659 | wxDrawLine(hdc, r.right - 1, r.bottom - 1, r.right - 1, r.top); | |
660 | } | |
661 | ||
662 | (void)SelectObject(hdc, hpenOld); | |
663 | DeleteObject(hpenWhite); | |
664 | DeleteObject(hpenLightGr); | |
665 | DeleteObject(hpenGrey); | |
666 | DeleteObject(hpenBlack); | |
667 | } | |
668 | ||
669 | bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) | |
670 | { | |
671 | LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis; | |
672 | ||
673 | RECT rectBtn; | |
674 | CopyRect(&rectBtn, &lpDIS->rcItem); | |
675 | ||
676 | COLORREF colBg = wxColourToRGB(GetBackgroundColour()), | |
677 | colFg = wxColourToRGB(GetForegroundColour()); | |
678 | ||
679 | HDC hdc = lpDIS->hDC; | |
680 | UINT state = lpDIS->itemState; | |
681 | ||
682 | // first, draw the background | |
683 | HBRUSH hbrushBackground = ::CreateSolidBrush(colBg); | |
684 | ||
685 | FillRect(hdc, &rectBtn, hbrushBackground); | |
686 | ||
687 | // draw the border for the current state | |
688 | bool selected = (state & ODS_SELECTED) != 0; | |
689 | if ( !selected ) | |
690 | { | |
691 | wxPanel *panel = wxDynamicCast(GetParent(), wxPanel); | |
692 | if ( panel ) | |
693 | { | |
694 | selected = panel->GetDefaultItem() == this; | |
695 | } | |
696 | } | |
697 | bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0; | |
698 | ||
699 | DrawButtonFrame(hdc, rectBtn, selected, pushed); | |
700 | ||
701 | // draw the focus rect if needed | |
702 | if ( state & ODS_FOCUS ) | |
703 | { | |
704 | RECT rectFocus; | |
705 | CopyRect(&rectFocus, &rectBtn); | |
706 | ||
707 | // I don't know where does this constant come from, but this is how | |
708 | // Windows draws them | |
709 | InflateRect(&rectFocus, -4, -4); | |
710 | ||
711 | DrawFocusRect(hdc, &rectFocus); | |
712 | } | |
713 | ||
714 | if ( pushed ) | |
715 | { | |
716 | // the label is shifted by 1 pixel to create "pushed" effect | |
717 | OffsetRect(&rectBtn, 1, 1); | |
718 | } | |
719 | ||
720 | DrawButtonText(hdc, &rectBtn, GetLabel(), | |
721 | state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT) | |
722 | : colFg); | |
723 | ||
724 | ::DeleteObject(hbrushBackground); | |
725 | ||
726 | return true; | |
727 | } | |
728 | ||
729 | #endif // __WIN32__ | |
730 | ||
731 | #endif // wxUSE_BUTTON | |
732 |