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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: event.cpp | |
3 | // Purpose: Event classes | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 01/02/97 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart and Markus Holzem | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifdef __GNUG__ | |
13 | #pragma implementation "event.h" | |
14 | #endif | |
15 | ||
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #ifdef __BORLANDC__ | |
20 | #pragma hdrstop | |
21 | #endif | |
22 | ||
23 | #ifndef WX_PRECOMP | |
24 | #include "wx/defs.h" | |
25 | #include "wx/control.h" | |
26 | #include "wx/utils.h" | |
27 | #include "wx/app.h" | |
28 | #include "wx/dc.h" | |
29 | #endif | |
30 | ||
31 | #include "wx/event.h" | |
32 | #include "wx/validate.h" | |
33 | ||
34 | #if !USE_SHARED_LIBRARY | |
35 | IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject) | |
36 | IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject) | |
37 | IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent) | |
92976ab6 | 38 | IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent) |
c801d85f KB |
39 | IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent) |
40 | IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent) | |
41 | IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent) | |
42 | IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent) | |
43 | IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent) | |
44 | IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent) | |
45 | IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent) | |
46 | IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent) | |
47 | IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent) | |
48 | IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent) | |
49 | IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent) | |
50 | IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent) | |
51 | IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent) | |
52 | IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent) | |
53 | IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent) | |
54 | IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent) | |
55 | IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent) | |
56 | IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent) | |
57 | IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent) | |
73fb82f3 | 58 | IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent) |
b09dcbf5 | 59 | IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxCommandEvent) |
f7bd2698 JS |
60 | IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent) |
61 | IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent) | |
c801d85f KB |
62 | |
63 | const wxEventTable *wxEvtHandler::GetEventTable() const { return &wxEvtHandler::sm_eventTable; } | |
64 | ||
65 | const wxEventTable wxEvtHandler::sm_eventTable = | |
c67daf87 | 66 | { (const wxEventTable *) NULL, &wxEvtHandler::sm_eventTableEntries[0] }; |
c801d85f | 67 | |
c67daf87 UR |
68 | const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] = { { 0, 0, 0, |
69 | #ifdef __SGI_CC__ | |
70 | // stupid SGI compiler --- offer aug 98 | |
71 | 0L } | |
72 | #else | |
73 | NULL } | |
74 | #endif | |
75 | }; | |
c801d85f KB |
76 | |
77 | #endif | |
78 | ||
79 | /* | |
80 | * General wxWindows events, covering | |
81 | * all interesting things that might happen (button clicking, resizing, | |
82 | * setting text in widgets, etc.). | |
83 | * | |
84 | * For each completely new event type, derive a new event class. | |
85 | * | |
86 | */ | |
87 | ||
88 | wxEvent::wxEvent(int theId) | |
89 | { | |
7798a18e | 90 | m_eventType = wxEVT_NULL; |
c67daf87 UR |
91 | m_eventObject = (wxObject *) NULL; |
92 | m_eventHandle = (char *) NULL; | |
c801d85f KB |
93 | m_timeStamp = 0; |
94 | m_id = theId; | |
95 | m_skipped = FALSE; | |
c67daf87 | 96 | m_callbackUserData = (wxObject *) NULL; |
c801d85f KB |
97 | } |
98 | ||
99 | /* | |
100 | * Command events | |
101 | * | |
102 | */ | |
103 | ||
7798a18e | 104 | wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId) |
c801d85f KB |
105 | { |
106 | m_eventType = commandType; | |
c67daf87 | 107 | m_clientData = (char *) NULL; |
f5e27805 | 108 | m_clientObject = (wxClientData *) NULL; |
c801d85f KB |
109 | m_extraLong = 0; |
110 | m_commandInt = 0; | |
111 | m_id = theId; | |
c67daf87 | 112 | m_commandString = (char *) NULL; |
c801d85f KB |
113 | } |
114 | ||
115 | /* | |
116 | * Scroll events | |
117 | */ | |
118 | ||
7798a18e | 119 | wxScrollEvent::wxScrollEvent(wxEventType commandType, int id, int pos, int orient): |
c801d85f KB |
120 | wxCommandEvent(commandType, id) |
121 | { | |
122 | m_extraLong = orient; | |
123 | m_commandInt = pos; | |
124 | } | |
125 | ||
126 | ||
127 | /* | |
128 | * Mouse events | |
129 | * | |
130 | */ | |
131 | ||
7798a18e | 132 | wxMouseEvent::wxMouseEvent(wxEventType commandType) |
c801d85f KB |
133 | { |
134 | m_eventType = commandType; | |
135 | m_metaDown = FALSE; | |
136 | m_altDown = FALSE; | |
137 | m_controlDown = FALSE; | |
138 | m_shiftDown = FALSE; | |
a4294b78 JS |
139 | m_leftDown = FALSE; |
140 | m_rightDown = FALSE; | |
141 | m_middleDown = FALSE; | |
142 | m_x = 0; | |
143 | m_y = 0; | |
c801d85f KB |
144 | } |
145 | ||
146 | // True if was a button dclick event (1 = left, 2 = middle, 3 = right) | |
147 | // or any button dclick event (but = -1) | |
148 | bool wxMouseEvent::ButtonDClick(int but) const | |
149 | { | |
150 | switch (but) { | |
151 | case -1: | |
152 | return (LeftDClick() || MiddleDClick() || RightDClick()); | |
153 | case 1: | |
154 | return LeftDClick(); | |
155 | case 2: | |
156 | return MiddleDClick(); | |
157 | case 3: | |
158 | return RightDClick(); | |
159 | default: | |
160 | return FALSE; | |
161 | } | |
162 | // NOTREACHED | |
163 | } | |
164 | ||
165 | // True if was a button down event (1 = left, 2 = middle, 3 = right) | |
166 | // or any button down event (but = -1) | |
167 | bool wxMouseEvent::ButtonDown(int but) const | |
168 | { | |
169 | switch (but) { | |
170 | case -1: | |
171 | return (LeftDown() || MiddleDown() || RightDown()); | |
172 | case 1: | |
173 | return LeftDown(); | |
174 | case 2: | |
175 | return MiddleDown(); | |
176 | case 3: | |
177 | return RightDown(); | |
178 | default: | |
179 | return FALSE; | |
180 | } | |
181 | // NOTREACHED | |
182 | } | |
183 | ||
184 | // True if was a button up event (1 = left, 2 = middle, 3 = right) | |
185 | // or any button up event (but = -1) | |
186 | bool wxMouseEvent::ButtonUp(int but) const | |
187 | { | |
188 | switch (but) { | |
189 | case -1: | |
190 | return (LeftUp() || MiddleUp() || RightUp()); | |
191 | case 1: | |
192 | return LeftUp(); | |
193 | case 2: | |
194 | return MiddleUp(); | |
195 | case 3: | |
196 | return RightUp(); | |
197 | default: | |
198 | return FALSE; | |
199 | } | |
200 | // NOTREACHED | |
201 | } | |
202 | ||
203 | // True if the given button is currently changing state | |
204 | bool wxMouseEvent::Button(int but) const | |
205 | { | |
206 | switch (but) { | |
207 | case -1: | |
208 | return (ButtonUp(-1) || ButtonDown(-1) || ButtonDClick(-1)) ; | |
209 | case 1: | |
210 | return (LeftDown() || LeftUp() || LeftDClick()); | |
211 | case 2: | |
212 | return (MiddleDown() || MiddleUp() || MiddleDClick()); | |
213 | case 3: | |
214 | return (RightDown() || RightUp() || RightDClick()); | |
215 | default: | |
216 | return FALSE; | |
217 | } | |
218 | // NOTREACHED | |
219 | } | |
220 | ||
221 | bool wxMouseEvent::ButtonIsDown(int but) const | |
222 | { | |
223 | switch (but) { | |
224 | case -1: | |
225 | return (LeftIsDown() || MiddleIsDown() || RightIsDown()); | |
226 | case 1: | |
227 | return LeftIsDown(); | |
228 | case 2: | |
229 | return MiddleIsDown(); | |
230 | case 3: | |
231 | return RightIsDown(); | |
232 | default: | |
233 | return FALSE; | |
234 | } | |
235 | // NOTREACHED | |
236 | } | |
237 | ||
238 | // Find the logical position of the event given the DC | |
239 | wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const | |
240 | { | |
0757d27c JS |
241 | wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y)); |
242 | return pt; | |
c801d85f KB |
243 | } |
244 | ||
245 | ||
246 | /* | |
247 | * Keyboard events | |
248 | * | |
249 | */ | |
250 | ||
7798a18e | 251 | wxKeyEvent::wxKeyEvent(wxEventType type) |
c801d85f KB |
252 | { |
253 | m_eventType = type; | |
254 | m_shiftDown = FALSE; | |
255 | m_controlDown = FALSE; | |
256 | m_metaDown = FALSE; | |
257 | m_altDown = FALSE; | |
258 | m_keyCode = 0; | |
259 | } | |
260 | ||
261 | /* | |
262 | * Event handler | |
263 | */ | |
264 | ||
265 | wxEvtHandler::wxEvtHandler(void) | |
266 | { | |
c67daf87 UR |
267 | m_nextHandler = (wxEvtHandler *) NULL; |
268 | m_previousHandler = (wxEvtHandler *) NULL; | |
c801d85f | 269 | m_enabled = TRUE; |
c67daf87 | 270 | m_dynamicEvents = (wxList *) NULL; |
c801d85f KB |
271 | } |
272 | ||
273 | wxEvtHandler::~wxEvtHandler(void) | |
274 | { | |
275 | // Takes itself out of the list of handlers | |
276 | if (m_previousHandler) | |
277 | m_previousHandler->m_nextHandler = m_nextHandler; | |
278 | ||
279 | if (m_nextHandler) | |
280 | m_nextHandler->m_previousHandler = m_previousHandler; | |
fe71f65c RR |
281 | |
282 | if (m_dynamicEvents) | |
283 | { | |
284 | wxNode *node = m_dynamicEvents->First(); | |
285 | while (node) | |
286 | { | |
287 | wxEventTableEntry *entry = (wxEventTableEntry*)node->Data(); | |
7f4dc78d | 288 | if (entry->m_callbackUserData) delete entry->m_callbackUserData; |
fe71f65c RR |
289 | delete entry; |
290 | node = node->Next(); | |
291 | } | |
292 | delete m_dynamicEvents; | |
293 | }; | |
c801d85f KB |
294 | } |
295 | ||
296 | /* | |
297 | * Event table stuff | |
298 | */ | |
299 | ||
300 | bool wxEvtHandler::ProcessEvent(wxEvent& event) | |
301 | { | |
302 | // An event handler can be enabled or disabled | |
303 | if ( GetEvtHandlerEnabled() ) | |
304 | { | |
fe71f65c RR |
305 | // Handle per-instance dynamic event tables first |
306 | ||
307 | if (SearchDynamicEventTable( event )) return TRUE; | |
308 | ||
309 | // Then static per-class event tables | |
310 | ||
c801d85f KB |
311 | const wxEventTable *table = GetEventTable(); |
312 | ||
313 | // Try the associated validator first, if this is a window. | |
314 | // Problem: if the event handler of the window has been replaced, | |
315 | // this wxEvtHandler may no longer be a window. | |
316 | // Therefore validators won't be processed if the handler | |
317 | // has been replaced with SetEventHandler. | |
318 | // THIS CAN BE CURED if PushEventHandler is used instead of | |
319 | // SetEventHandler, and then processing will be passed down the | |
320 | // chain of event handlers. | |
321 | if (IsKindOf(CLASSINFO(wxWindow))) | |
322 | { | |
0757d27c JS |
323 | wxWindow *win = (wxWindow *)this; |
324 | ||
325 | // Can only use the validator of the window which | |
326 | // is receiving the event | |
327 | if ( (win == event.GetEventObject()) && | |
328 | win->GetValidator() && | |
329 | win->GetValidator()->ProcessEvent(event)) | |
330 | return TRUE; | |
c801d85f KB |
331 | } |
332 | ||
333 | // Search upwards through the inheritance hierarchy | |
334 | while (table) | |
335 | { | |
336 | if (SearchEventTable((wxEventTable&)*table, event)) | |
337 | return TRUE; | |
338 | table = table->baseTable; | |
339 | } | |
340 | } | |
341 | ||
342 | // Try going down the event handler chain | |
343 | if ( GetNextHandler() ) | |
344 | { | |
0757d27c JS |
345 | if ( GetNextHandler()->ProcessEvent(event) ) |
346 | return TRUE; | |
c801d85f KB |
347 | } |
348 | ||
349 | // Carry on up the parent-child hierarchy, | |
350 | // but only if event is a command event: it wouldn't | |
351 | // make sense for a parent to receive a child's size event, for example | |
352 | if (IsKindOf(CLASSINFO(wxWindow)) && event.IsKindOf(CLASSINFO(wxCommandEvent))) | |
353 | { | |
354 | wxWindow *win = (wxWindow *)this; | |
0757d27c | 355 | wxWindow *parent = win->GetParent(); |
c801d85f KB |
356 | if (parent && !parent->IsBeingDeleted()) |
357 | return win->GetParent()->GetEventHandler()->ProcessEvent(event); | |
358 | } | |
359 | ||
5de76427 JS |
360 | // Last try - application object. |
361 | // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always swallow it. | |
362 | // wxEVT_IDLE is sent explicitly to wxApp so it will be processed appropriately | |
363 | // via SearchEventTable. | |
364 | if (wxTheApp && this != wxTheApp && (event.GetEventType() != wxEVT_IDLE) && wxTheApp->ProcessEvent(event)) | |
c801d85f KB |
365 | return TRUE; |
366 | else | |
367 | return FALSE; | |
368 | } | |
369 | ||
370 | bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event) | |
371 | { | |
372 | int i = 0; | |
373 | int commandId = event.GetId(); | |
6c6f51f6 | 374 | |
f5419957 JS |
375 | // BC++ doesn't like while (table.entries[i].m_fn) |
376 | ||
377 | while (table.entries[i].m_fn != 0L) | |
7b678698 | 378 | { |
c801d85f KB |
379 | if ((event.GetEventType() == table.entries[i].m_eventType) && |
380 | (table.entries[i].m_id == -1 || // Match, if event spec says any id will do (id == -1) | |
381 | (table.entries[i].m_lastId == -1 && commandId == table.entries[i].m_id) || | |
382 | (table.entries[i].m_lastId != -1 && | |
383 | (commandId >= table.entries[i].m_id && commandId <= table.entries[i].m_lastId)))) | |
384 | { | |
0757d27c | 385 | event.Skip(FALSE); |
fe71f65c | 386 | event.m_callbackUserData = table.entries[i].m_callbackUserData; |
0757d27c | 387 | |
c801d85f KB |
388 | (this->*((wxEventFunction) (table.entries[i].m_fn)))(event); |
389 | ||
0757d27c JS |
390 | if ( event.GetSkipped() ) |
391 | return FALSE; | |
392 | else | |
c801d85f KB |
393 | return TRUE; |
394 | } | |
395 | i ++; | |
396 | } | |
397 | return FALSE; | |
398 | } | |
399 | ||
debe6624 JS |
400 | void wxEvtHandler::Connect( int id, int lastId, |
401 | int eventType, | |
0757d27c JS |
402 | wxObjectEventFunction func, |
403 | wxObject *userData ) | |
fe71f65c RR |
404 | { |
405 | wxEventTableEntry *entry = new wxEventTableEntry; | |
406 | entry->m_id = id; | |
407 | entry->m_lastId = lastId; | |
408 | entry->m_eventType = eventType; | |
409 | entry->m_fn = func; | |
410 | entry->m_callbackUserData = userData; | |
411 | ||
412 | if (!m_dynamicEvents) | |
413 | m_dynamicEvents = new wxList; | |
414 | ||
415 | m_dynamicEvents->Append( (wxObject*) entry ); | |
416 | } | |
417 | ||
418 | bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event ) | |
419 | { | |
420 | if (!m_dynamicEvents) return FALSE; | |
421 | ||
422 | int commandId = event.GetId(); | |
6c6f51f6 | 423 | |
fe71f65c RR |
424 | wxNode *node = m_dynamicEvents->First(); |
425 | while (node) | |
426 | { | |
427 | wxEventTableEntry *entry = (wxEventTableEntry*)node->Data(); | |
46dc76ba | 428 | |
fe71f65c RR |
429 | if (entry->m_fn) |
430 | { | |
431 | if ((event.GetEventType() == entry->m_eventType) && | |
432 | (entry->m_id == -1 || // Match, if event spec says any id will do (id == -1) | |
433 | (entry->m_lastId == -1 && commandId == entry->m_id) || | |
434 | (entry->m_lastId != -1 && | |
435 | (commandId >= entry->m_id && commandId <= entry->m_lastId)))) | |
436 | { | |
0757d27c | 437 | event.Skip(FALSE); |
fe71f65c | 438 | event.m_callbackUserData = entry->m_callbackUserData; |
0757d27c | 439 | |
fe71f65c RR |
440 | (this->*((wxEventFunction) (entry->m_fn)))(event); |
441 | ||
0757d27c JS |
442 | if (event.GetSkipped()) |
443 | return FALSE; | |
444 | else | |
fe71f65c RR |
445 | return TRUE; |
446 | } | |
7b678698 | 447 | } |
fe71f65c RR |
448 | node = node->Next(); |
449 | } | |
450 | return FALSE; | |
451 | }; | |
452 | ||
c801d85f KB |
453 | bool wxEvtHandler::OnClose(void) |
454 | { | |
455 | if (GetNextHandler()) return GetNextHandler()->OnClose(); | |
456 | else return FALSE; | |
457 | } | |
458 | ||
459 |