removed a mousecoords printf message
[blender.git] / intern / ghost / intern / GHOST_SystemWin32.cpp
1 /**
2  * $Id$
3  * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License
7  * as published by the Free Software Foundation; either version 2
8  * of the License, or (at your option) any later version. The Blender
9  * Foundation also sells licenses for use in proprietary software under
10  * the Blender License.  See http://www.blender.org/BL/ for information
11  * about this.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software Foundation,
20  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
21  *
22  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
23  * All rights reserved.
24  *
25  * The Original Code is: all of this file.
26  *
27  * Contributor(s): none yet.
28  *
29  * ***** END GPL/BL DUAL LICENSE BLOCK *****
30  */
31
32 /**
33
34  * $Id$
35  * Copyright (C) 2001 NaN Technologies B.V.
36  * @author      Maarten Gribnau
37  * @date        May 7, 2001
38  */
39
40 #ifdef HAVE_CONFIG_H
41 #include <config.h>
42 #endif
43
44 #pragma warning (disable:4786) // get rid of stupid stl-visual compiler debug warning
45
46 #include "GHOST_SystemWin32.h"
47
48 /*
49  * According to the docs the mouse wheel message is supported from windows 98 
50  * upwards. Leaving WINVER at default value, the WM_MOUSEWHEEL message and the 
51  * wheel detent value are undefined.
52  */
53 #ifndef WM_MOUSEWHEEL
54 #define WM_MOUSEWHEEL 0x020A
55 #endif // WM_MOUSEWHEEL
56 #ifndef WHEEL_DELTA
57 #define WHEEL_DELTA 120 /* Value for rolling one detent */
58 #endif // WHEEL_DELTA
59
60
61 #include "GHOST_Debug.h"
62 #include "GHOST_DisplayManagerWin32.h"
63 #include "GHOST_EventButton.h"
64 #include "GHOST_EventCursor.h"
65 #include "GHOST_EventKey.h"
66 #include "GHOST_EventWheel.h"
67 #include "GHOST_TimerTask.h"
68 #include "GHOST_TimerManager.h"
69 #include "GHOST_WindowManager.h"
70 #include "GHOST_WindowWin32.h"
71
72 // Key code values not found in winuser.h
73 #ifndef VK_MINUS
74 #define VK_MINUS 0xBD
75 #endif // VK_MINUS
76 #ifndef VK_SEMICOLON
77 #define VK_SEMICOLON 0xBA
78 #endif // VK_SEMICOLON
79 #ifndef VK_PERIOD
80 #define VK_PERIOD 0xBE
81 #endif // VK_PERIOD
82 #ifndef VK_COMMA
83 #define VK_COMMA 0xBC
84 #endif // VK_COMMA
85 #ifndef VK_QUOTE
86 #define VK_QUOTE 0xDE
87 #endif // VK_QUOTE
88 #ifndef VK_BACK_QUOTE
89 #define VK_BACK_QUOTE 0xC0
90 #endif // VK_BACK_QUOTE
91 #ifndef VK_SLASH
92 #define VK_SLASH 0xBF
93 #endif // VK_SLASH
94 #ifndef VK_BACK_SLASH
95 #define VK_BACK_SLASH 0xDC
96 #endif // VK_BACK_SLASH
97 #ifndef VK_EQUALS
98 #define VK_EQUALS 0xBB
99 #endif // VK_EQUALS
100 #ifndef VK_OPEN_BRACKET
101 #define VK_OPEN_BRACKET 0xDB
102 #endif // VK_OPEN_BRACKET
103 #ifndef VK_CLOSE_BRACKET
104 #define VK_CLOSE_BRACKET 0xDD
105 #endif // VK_CLOSE_BRACKET
106
107
108 GHOST_SystemWin32::GHOST_SystemWin32()
109 : m_hasPerformanceCounter(false), m_freq(0), m_start(0),
110   m_seperateLeftRight(false),
111   m_seperateLeftRightInitialized(false)
112 {
113         m_displayManager = new GHOST_DisplayManagerWin32 ();
114         GHOST_ASSERT(m_displayManager, "GHOST_SystemWin32::GHOST_SystemWin32(): m_displayManager==0\n");
115         m_displayManager->initialize();
116 }
117
118 GHOST_SystemWin32::~GHOST_SystemWin32()
119 {
120 }
121
122
123 GHOST_TUns64 GHOST_SystemWin32::getMilliSeconds() const
124 {
125         // Hardware does not support high resolution timers. We will use GetTickCount instead then.
126         if (!m_hasPerformanceCounter) {
127                 return ::GetTickCount();
128         }
129
130         // Retrieve current count
131         __int64 count = 0;
132         ::QueryPerformanceCounter((LARGE_INTEGER*)&count);
133
134         // Calculate the time passed since system initialization.
135         __int64 delta = 1000*(count-m_start);
136
137         GHOST_TUns64 t = (GHOST_TUns64)(delta/m_freq);
138         return t; 
139 }
140
141
142 GHOST_TUns8 GHOST_SystemWin32::getNumDisplays() const
143 {
144         GHOST_ASSERT(m_displayManager, "GHOST_SystemWin32::getNumDisplays(): m_displayManager==0\n");
145         GHOST_TUns8 numDisplays;
146         m_displayManager->getNumDisplays(numDisplays);
147         return numDisplays;
148 }
149
150
151 void GHOST_SystemWin32::getMainDisplayDimensions(GHOST_TUns32& width, GHOST_TUns32& height) const
152 {
153         width = ::GetSystemMetrics(SM_CXSCREEN);
154         height= ::GetSystemMetrics(SM_CYSCREEN);
155 }
156
157
158 GHOST_IWindow* GHOST_SystemWin32::createWindow(
159         const STR_String& title, 
160         GHOST_TInt32 left, GHOST_TInt32 top, GHOST_TUns32 width, GHOST_TUns32 height,
161         GHOST_TWindowState state, GHOST_TDrawingContextType type,
162         bool stereoVisual)
163 {
164         GHOST_Window* window = 0;
165         window = new GHOST_WindowWin32 (title, left, top, width, height, state, type, stereoVisual);
166         if (window) {
167                 if (window->getValid()) {
168                         // Store the pointer to the window
169 //                      if (state != GHOST_kWindowStateFullScreen) {
170                                 m_windowManager->addWindow(window);
171 //                      }
172                 }
173                 else {
174                         delete window;
175                         window = 0;
176                 }
177         }
178         return window;
179 }
180
181
182 bool GHOST_SystemWin32::processEvents(bool waitForEvent)
183 {
184         MSG msg;
185         bool anyProcessed = false;
186
187         do {
188                 GHOST_TimerManager* timerMgr = getTimerManager();
189
190                 if (waitForEvent && !::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE)) {
191 #if 1
192                         ::Sleep(1);
193 #else
194                         GHOST_TUns64 next = timerMgr->nextFireTime();
195                         
196                         if (next == GHOST_kFireTimeNever) {
197                                 ::WaitMessage();
198                         } else {
199                                 ::SetTimer(NULL, 0, next - getMilliSeconds(), NULL);
200                                 ::WaitMessage();
201                                 ::KillTimer(NULL, 0);
202                         }
203 #endif
204                 }
205
206                 if (timerMgr->fireTimers(getMilliSeconds())) {
207                         anyProcessed = true;
208                 }
209
210                 // Process all the events waiting for us
211                 while (::PeekMessage(&msg, 0, 0, 0, PM_REMOVE) != 0) {
212                         ::TranslateMessage(&msg);
213                         ::DispatchMessage(&msg);
214                         anyProcessed = true;
215                 }
216         } while (waitForEvent && !anyProcessed);
217
218         return anyProcessed;
219 }
220
221
222 GHOST_TSuccess GHOST_SystemWin32::getCursorPosition(GHOST_TInt32& x, GHOST_TInt32& y) const
223 {
224         POINT point;
225         bool success = ::GetCursorPos(&point) == TRUE;
226         x = point.x;
227         y = point.y;
228         return GHOST_kSuccess;
229 }
230
231
232 GHOST_TSuccess GHOST_SystemWin32::setCursorPosition(GHOST_TInt32 x, GHOST_TInt32 y) const
233 {
234         return ::SetCursorPos(x, y) == TRUE ? GHOST_kSuccess : GHOST_kFailure;
235 }
236
237
238 GHOST_TSuccess GHOST_SystemWin32::getModifierKeys(GHOST_ModifierKeys& keys) const
239 {
240         /*
241         GetKeyState and GetAsyncKeyState only work with Win95, Win98, NT4,
242         Terminal Server and Windows 2000.
243         But on WinME it always returns zero. These two functions are simply
244         skipped by Millenium Edition!
245
246         Official explanation from Microsoft:
247         Intentionally disabled.
248         It didn't work all that well on some newer hardware, and worked less 
249         well with the passage of time, so it was fully disabled in ME.
250         */
251         if (m_seperateLeftRight && m_seperateLeftRightInitialized) {
252                 bool down = HIBYTE(::GetKeyState(VK_LSHIFT)) != 0;
253                 keys.set(GHOST_kModifierKeyLeftShift, down);
254                 down = HIBYTE(::GetKeyState(VK_RSHIFT)) != 0;
255                 keys.set(GHOST_kModifierKeyRightShift, down);
256                 down = HIBYTE(::GetKeyState(VK_LMENU)) != 0;
257                 keys.set(GHOST_kModifierKeyLeftAlt, down);
258                 down = HIBYTE(::GetKeyState(VK_RMENU)) != 0;
259                 keys.set(GHOST_kModifierKeyRightAlt, down);
260                 down = HIBYTE(::GetKeyState(VK_LCONTROL)) != 0;
261                 keys.set(GHOST_kModifierKeyLeftControl, down);
262                 down = HIBYTE(::GetKeyState(VK_RCONTROL)) != 0;
263                 keys.set(GHOST_kModifierKeyRightControl, down);
264         }
265         else {
266                 bool down = HIBYTE(::GetKeyState(VK_SHIFT)) != 0;
267                 keys.set(GHOST_kModifierKeyLeftShift, down);
268                 keys.set(GHOST_kModifierKeyRightShift, down);
269                 down = HIBYTE(::GetKeyState(VK_MENU)) != 0;
270                 keys.set(GHOST_kModifierKeyLeftAlt, down);
271                 keys.set(GHOST_kModifierKeyRightAlt, down);
272                 down = HIBYTE(::GetKeyState(VK_CONTROL)) != 0;
273                 keys.set(GHOST_kModifierKeyLeftControl, down);
274                 keys.set(GHOST_kModifierKeyRightControl, down);
275         }
276         return GHOST_kSuccess;
277 }
278
279
280 GHOST_TSuccess GHOST_SystemWin32::getButtons(GHOST_Buttons& buttons) const
281 {
282         /* Check for swapped buttons (left-handed mouse buttons)
283          * GetAsyncKeyState() will give back the state of the physical mouse buttons.
284          */
285         bool swapped = ::GetSystemMetrics(SM_SWAPBUTTON) == TRUE;
286
287         bool down = HIBYTE(::GetKeyState(VK_LBUTTON)) != 0;
288         buttons.set(swapped ? GHOST_kButtonMaskRight : GHOST_kButtonMaskLeft, down);
289
290         down = HIBYTE(::GetKeyState(VK_MBUTTON)) != 0;
291         buttons.set(GHOST_kButtonMaskMiddle, down);
292
293         down = HIBYTE(::GetKeyState(VK_RBUTTON)) != 0;
294         buttons.set(swapped ? GHOST_kButtonMaskLeft : GHOST_kButtonMaskRight, down);
295         return GHOST_kSuccess;
296 }
297
298
299 GHOST_TSuccess GHOST_SystemWin32::init()
300 {
301         GHOST_TSuccess success = GHOST_System::init();
302
303         // Determine whether this system has a high frequency performance counter. */
304         m_hasPerformanceCounter = ::QueryPerformanceFrequency((LARGE_INTEGER*)&m_freq) == TRUE;
305         if (m_hasPerformanceCounter) {
306                 GHOST_PRINT("GHOST_SystemWin32::init: High Frequency Performance Timer available\n")
307                 ::QueryPerformanceCounter((LARGE_INTEGER*)&m_start);
308         }
309         else {
310                 GHOST_PRINT("GHOST_SystemWin32::init: High Frequency Performance Timer not available\n")
311         }
312
313         if (success) {
314                 WNDCLASS wc;
315                 wc.style= CS_HREDRAW | CS_VREDRAW;
316                 wc.lpfnWndProc= s_wndProc;
317                 wc.cbClsExtra= 0;
318                 wc.cbWndExtra= 0;
319                 wc.hInstance= ::GetModuleHandle(0);
320                 #ifndef FREE_WINDOWS
321                 wc.hIcon = ::LoadIcon(wc.hInstance, "APPICON");
322                 #else
323                 wc.hIcon = ::LoadIcon(NULL, "APPICON");
324                 #endif
325                 if (!wc.hIcon) {
326                         ::LoadIcon(NULL, IDI_APPLICATION);
327                 }
328                 wc.hCursor = ::LoadCursor(0, IDC_ARROW);
329                 wc.hbrBackground= (HBRUSH)::GetStockObject(BLACK_BRUSH);
330                 wc.lpszMenuName = 0;
331                 wc.lpszClassName= GHOST_WindowWin32::getWindowClassName();
332     
333                 // Use RegisterClassEx for setting small icon
334                 if (::RegisterClass(&wc) == 0) {
335                         success = GHOST_kFailure;
336                 }
337         }
338         return success;
339 }
340
341
342 GHOST_TSuccess GHOST_SystemWin32::exit()
343 {
344         return GHOST_System::exit();
345 }
346
347
348 GHOST_TKey GHOST_SystemWin32::convertKey(WPARAM wParam, LPARAM lParam) const
349 {
350         GHOST_TKey key;
351         bool isExtended = (lParam&(1<<24))?true:false;
352
353         if ((wParam >= '0') && (wParam <= '9')) {
354                 // VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39)
355                 key = (GHOST_TKey)(wParam - '0' + GHOST_kKey0);
356         }
357         else if ((wParam >= 'A') && (wParam <= 'Z')) {
358                 // VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A)
359                 key = (GHOST_TKey)(wParam - 'A' + GHOST_kKeyA);
360         }
361         else if ((wParam >= VK_F1) && (wParam <= VK_F24)) {
362                 key = (GHOST_TKey)(wParam - VK_F1 + GHOST_kKeyF1);
363         }
364         else {
365                 switch (wParam) {
366                 case VK_RETURN:
367                         key = isExtended?GHOST_kKeyNumpadEnter:GHOST_kKeyEnter;
368                         break;
369
370                 case VK_BACK:     key = GHOST_kKeyBackSpace;            break;
371                 case VK_TAB:      key = GHOST_kKeyTab;                          break;
372                 case VK_ESCAPE:   key = GHOST_kKeyEsc;                          break;
373                 case VK_SPACE:    key = GHOST_kKeySpace;                        break;
374                 case VK_PRIOR:    key = GHOST_kKeyUpPage;                       break;
375                 case VK_NEXT:     key = GHOST_kKeyDownPage;                     break;
376                 case VK_END:      key = GHOST_kKeyEnd;                          break;
377                 case VK_HOME:     key = GHOST_kKeyHome;                         break;
378                 case VK_INSERT:   key = GHOST_kKeyInsert;                       break;
379                 case VK_DELETE:   key = GHOST_kKeyDelete;                       break;
380                 case VK_LEFT:     key = GHOST_kKeyLeftArrow;            break;
381                 case VK_RIGHT:    key = GHOST_kKeyRightArrow;           break;
382                 case VK_UP:       key = GHOST_kKeyUpArrow;                      break;
383                 case VK_DOWN:     key = GHOST_kKeyDownArrow;            break;
384                 case VK_NUMPAD0:  key = GHOST_kKeyNumpad0;                      break;
385                 case VK_NUMPAD1:  key = GHOST_kKeyNumpad1;                      break;
386                 case VK_NUMPAD2:  key = GHOST_kKeyNumpad2;                      break;
387                 case VK_NUMPAD3:  key = GHOST_kKeyNumpad3;                      break;
388                 case VK_NUMPAD4:  key = GHOST_kKeyNumpad4;                      break;
389                 case VK_NUMPAD5:  key = GHOST_kKeyNumpad5;                      break;
390                 case VK_NUMPAD6:  key = GHOST_kKeyNumpad6;                      break;
391                 case VK_NUMPAD7:  key = GHOST_kKeyNumpad7;                      break;
392                 case VK_NUMPAD8:  key = GHOST_kKeyNumpad8;                      break;
393                 case VK_NUMPAD9:  key = GHOST_kKeyNumpad9;                      break;
394                 case VK_SNAPSHOT: key = GHOST_kKeyPrintScreen;          break;
395                 case VK_PAUSE:    key = GHOST_kKeyPause;                        break;
396                 case VK_MULTIPLY: key = GHOST_kKeyNumpadAsterisk;        break;
397                 case VK_SUBTRACT: key = GHOST_kKeyNumpadMinus;          break;
398                 case VK_DECIMAL:  key = GHOST_kKeyNumpadPeriod;         break;
399                 case VK_DIVIDE:   key = GHOST_kKeyNumpadSlash;          break;
400                 case VK_ADD:      key = GHOST_kKeyNumpadPlus;           break;
401
402                 case VK_SEMICOLON:              key = GHOST_kKeySemicolon;              break;
403                 case VK_EQUALS:                 key = GHOST_kKeyEqual;                  break;
404                 case VK_COMMA:                  key = GHOST_kKeyComma;                  break;
405                 case VK_MINUS:                  key = GHOST_kKeyMinus;                  break;
406                 case VK_PERIOD:                 key = GHOST_kKeyPeriod;                 break;
407                 case VK_SLASH:                  key = GHOST_kKeySlash;                  break;
408                 case VK_BACK_QUOTE:             key = GHOST_kKeyAccentGrave;    break;
409                 case VK_OPEN_BRACKET:   key = GHOST_kKeyLeftBracket;    break;
410                 case VK_BACK_SLASH:             key = GHOST_kKeyBackslash;              break;
411                 case VK_CLOSE_BRACKET:  key = GHOST_kKeyRightBracket;   break;
412                 case VK_QUOTE:                  key = GHOST_kKeyQuote;                  break;
413
414                 // Process these keys separately because we need to distinguish right from left modifier keys
415                 case VK_SHIFT:
416                 case VK_CONTROL:
417                 case VK_MENU:
418
419                 // Ignore these keys
420                 case VK_NUMLOCK:
421                 case VK_SCROLL:
422                 case VK_CAPITAL:
423                 default:
424                         key = GHOST_kKeyUnknown;
425                         break;
426                 }
427         }
428         return key;
429 }
430
431
432 void GHOST_SystemWin32::processModifierKeys(GHOST_IWindow *window)
433 {
434         GHOST_ModifierKeys oldModifiers, newModifiers;
435         // Retrieve old state of the modifier keys
436         ((GHOST_SystemWin32*)getSystem())->retrieveModifierKeys(oldModifiers);
437         // Retrieve current state of the modifier keys
438         ((GHOST_SystemWin32*)getSystem())->getModifierKeys(newModifiers);
439
440         // Compare the old and the new
441         if (!newModifiers.equals(oldModifiers)) {
442                 // Create events for the masks that changed
443                 for (int i = 0; i < GHOST_kModifierKeyNumMasks; i++) {
444                         if (newModifiers.get((GHOST_TModifierKeyMask)i) != oldModifiers.get((GHOST_TModifierKeyMask)i)) {
445                                 // Convert the mask to a key code
446                                 GHOST_TKey key = GHOST_ModifierKeys::getModifierKeyCode((GHOST_TModifierKeyMask)i);
447                                 bool keyDown = newModifiers.get((GHOST_TModifierKeyMask)i);
448                                 GHOST_EventKey* event;
449                                 if (key != GHOST_kKeyUnknown) {
450                                         // Create an event
451                                         event = new GHOST_EventKey(getSystem()->getMilliSeconds(), keyDown ? GHOST_kEventKeyDown: GHOST_kEventKeyUp, window, key);
452                                         pushEvent(event);
453                                 }
454                         }
455                 }
456         }
457
458         // Store new modifier keys state
459         ((GHOST_SystemWin32*)getSystem())->storeModifierKeys(newModifiers);
460 }
461
462
463 GHOST_EventButton* GHOST_SystemWin32::processButtonEvent(GHOST_TEventType type, GHOST_IWindow *window, GHOST_TButtonMask mask)
464 {
465         return new GHOST_EventButton (getSystem()->getMilliSeconds(), type, window, mask);
466 }
467
468
469 GHOST_EventCursor* GHOST_SystemWin32::processCursorEvent(GHOST_TEventType type, GHOST_IWindow *window)
470 {
471         GHOST_TInt32 x, y;
472         getSystem()->getCursorPosition(x, y);
473         return new GHOST_EventCursor (getSystem()->getMilliSeconds(), type, window, x, y);
474 }
475
476
477 GHOST_EventWheel* GHOST_SystemWin32::processWheelEvent(GHOST_IWindow *window, WPARAM wParam, LPARAM lParam)
478 {
479         // short fwKeys = LOWORD(wParam);                       // key flags
480         int zDelta = (short) HIWORD(wParam);    // wheel rotation
481         zDelta /= WHEEL_DELTA;
482         // short xPos = (short) LOWORD(lParam); // horizontal position of pointer
483         // short yPos = (short) HIWORD(lParam); // vertical position of pointer
484         return new GHOST_EventWheel (getSystem()->getMilliSeconds(), window, zDelta);
485 }
486
487
488 GHOST_EventKey* GHOST_SystemWin32::processKeyEvent(GHOST_IWindow *window, bool keyDown, WPARAM wParam, LPARAM lParam)
489 {
490         GHOST_TKey key = ((GHOST_SystemWin32*)getSystem())->convertKey(wParam, lParam);
491         GHOST_EventKey* event;
492         if (key != GHOST_kKeyUnknown) {
493                 MSG keyMsg;
494                 char ascii = '\0';
495
496                         /* Eat any character related messages */
497                 if (::PeekMessage(&keyMsg, NULL, WM_CHAR, WM_SYSDEADCHAR, PM_REMOVE)) {
498                         ascii = (char) keyMsg.wParam;
499                 }
500
501                 event = new GHOST_EventKey(getSystem()->getMilliSeconds(), keyDown ? GHOST_kEventKeyDown: GHOST_kEventKeyUp, window, key, ascii);
502         }
503         else {
504                 event = 0;
505         }
506         return event;
507 }
508
509
510 GHOST_Event* GHOST_SystemWin32::processWindowEvent(GHOST_TEventType type, GHOST_IWindow* window)
511 {
512         return new GHOST_Event(getSystem()->getMilliSeconds(), type, window);
513 }
514
515
516 LRESULT WINAPI GHOST_SystemWin32::s_wndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
517 {
518         GHOST_Event* event = 0;
519         LRESULT lResult;
520         GHOST_SystemWin32* system = ((GHOST_SystemWin32*)getSystem());
521         GHOST_ASSERT(system, "GHOST_SystemWin32::s_wndProc(): system not initialized")
522
523         if (hwnd) {
524                 GHOST_WindowWin32* window = (GHOST_WindowWin32*)::GetWindowLong(hwnd, GWL_USERDATA);
525                 if (window) {
526                         switch (msg) {
527                                 ////////////////////////////////////////////////////////////////////////
528                                 // Keyboard events, processed
529                                 ////////////////////////////////////////////////////////////////////////
530                                 case WM_KEYDOWN:
531                                         /* The WM_KEYDOWN message is posted to the window with the keyboard focus when a 
532                                          * nonsystem key is pressed. A nonsystem key is a key that is pressed when the alt
533                                          * key is not pressed. 
534                                          */
535                                 case WM_SYSKEYDOWN:
536                                         /* The WM_SYSKEYDOWN message is posted to the window with the keyboard focus when 
537                                          * the user presses the F10 key (which activates the menu bar) or holds down the 
538                                          * alt key and then presses another key. It also occurs when no window currently 
539                                          * has the keyboard focus; in this case, the WM_SYSKEYDOWN message is sent to the 
540                                          * active window. The window that receives the message can distinguish between these 
541                                          * two contexts by checking the context code in the lKeyData parameter. 
542                                          */
543                                         switch (wParam) {
544                                                 case VK_SHIFT:
545                                                 case VK_CONTROL:
546                                                 case VK_MENU:
547                                                         if (!system->m_seperateLeftRightInitialized) {
548                                                                 // Check whether this system supports seperate left and right keys
549                                                                 switch (wParam) {
550                                                                         case VK_SHIFT:
551                                                                                 system->m_seperateLeftRight = 
552                                                                                         (HIBYTE(::GetKeyState(VK_LSHIFT)) != 0) ||
553                                                                                         (HIBYTE(::GetKeyState(VK_RSHIFT)) != 0) ?
554                                                                                         true : false;
555                                                                                 break;
556                                                                         case VK_CONTROL:
557                                                                                 system->m_seperateLeftRight = 
558                                                                                         (HIBYTE(::GetKeyState(VK_LCONTROL)) != 0) ||
559                                                                                         (HIBYTE(::GetKeyState(VK_RCONTROL)) != 0) ?
560                                                                                         true : false;
561                                                                                 break;
562                                                                         case VK_MENU:
563                                                                                 system->m_seperateLeftRight = 
564                                                                                         (HIBYTE(::GetKeyState(VK_LMENU)) != 0) ||
565                                                                                         (HIBYTE(::GetKeyState(VK_RMENU)) != 0) ?
566                                                                                         true : false;
567                                                                                 break;
568                                                                 }
569                                                                 system->m_seperateLeftRightInitialized = true;
570                                                         }
571                                                         system->processModifierKeys(window);
572                                                         // Bypass call to DefWindowProc
573                                                         return 0;
574                                                 default:
575                                                         event = processKeyEvent(window, true, wParam, lParam);
576                                                         if (!event) {
577                                                                 GHOST_PRINT("GHOST_SystemWin32::wndProc: key event ")
578                                                                 GHOST_PRINT(msg)
579                                                                 GHOST_PRINT(" key ignored\n")
580                                                         }
581                                                         break;
582                                                 }
583                                         break;
584
585                                 case WM_KEYUP:
586                                 case WM_SYSKEYUP:
587                                         switch (wParam) {
588                                                 case VK_SHIFT:
589                                                 case VK_CONTROL:
590                                                 case VK_MENU:
591                                                         system->processModifierKeys(window);
592                                                         // Bypass call to DefWindowProc
593                                                         return 0;
594                                                 default:
595                                                         event = processKeyEvent(window, false, wParam, lParam);
596                                                         if (!event) {
597                                                                 GHOST_PRINT("GHOST_SystemWin32::wndProc: key event ")
598                                                                 GHOST_PRINT(msg)
599                                                                 GHOST_PRINT(" key ignored\n")
600                                                         }
601                                                         break;
602                                         }
603                                         break;
604
605                                 ////////////////////////////////////////////////////////////////////////
606                                 // Keyboard events, ignored
607                                 ////////////////////////////////////////////////////////////////////////
608                                 case WM_CHAR:
609                                         /* The WM_CHAR message is posted to the window with the keyboard focus when 
610                                          * a WM_KEYDOWN message is translated by the TranslateMessage function. WM_CHAR 
611                                          * contains the character code of the key that was pressed. 
612                                          */
613                                 case WM_DEADCHAR:
614                                         /* The WM_DEADCHAR message is posted to the window with the keyboard focus when a
615                                          * WM_KEYUP message is translated by the TranslateMessage function. WM_DEADCHAR 
616                                          * specifies a character code generated by a dead key. A dead key is a key that 
617                                          * generates a character, such as the umlaut (double-dot), that is combined with 
618                                          * another character to form a composite character. For example, the umlaut-O 
619                                          * character (Ù) is generated by typing the dead key for the umlaut character, and 
620                                          * then typing the O key.
621                                          */
622                                 case WM_SYSDEADCHAR:
623                                         /* The WM_SYSDEADCHAR message is sent to the window with the keyboard focus when 
624                                          * a WM_SYSKEYDOWN message is translated by the TranslateMessage function. 
625                                          * WM_SYSDEADCHAR specifies the character code of a system dead key - that is, 
626                                          * a dead key that is pressed while holding down the alt key. 
627                                          */
628                                         break;
629
630                                 ////////////////////////////////////////////////////////////////////////
631                                 // Mouse events, processed
632                                 ////////////////////////////////////////////////////////////////////////
633                                 case WM_LBUTTONDOWN:
634                                         window->registerMouseClickEvent(true);
635                                         event = processButtonEvent(GHOST_kEventButtonDown, window, GHOST_kButtonMaskLeft);
636                                         break;
637                                 case WM_MBUTTONDOWN:
638                                         window->registerMouseClickEvent(true);
639                                         event = processButtonEvent(GHOST_kEventButtonDown, window, GHOST_kButtonMaskMiddle);
640                                         break;
641                                 case WM_RBUTTONDOWN:
642                                         window->registerMouseClickEvent(true);
643                                         event = processButtonEvent(GHOST_kEventButtonDown, window, GHOST_kButtonMaskRight);
644                                         break;
645                                 case WM_LBUTTONUP:
646                                         window->registerMouseClickEvent(false);
647                                         event = processButtonEvent(GHOST_kEventButtonUp, window, GHOST_kButtonMaskLeft);
648                                         break;
649                                 case WM_MBUTTONUP:
650                                         window->registerMouseClickEvent(false);
651                                         event = processButtonEvent(GHOST_kEventButtonUp, window, GHOST_kButtonMaskMiddle);
652                                         break;
653                                 case WM_RBUTTONUP:
654                                         window->registerMouseClickEvent(false);
655                                         event = processButtonEvent(GHOST_kEventButtonUp, window, GHOST_kButtonMaskRight);
656                                         break;
657                                 case WM_MOUSEMOVE:
658                                         event = processCursorEvent(GHOST_kEventCursorMove, window);
659                                         break;
660                                 case WM_MOUSEWHEEL:
661                                         /* The WM_MOUSEWHEEL message is sent to the focus window 
662                                          * when the mouse wheel is rotated. The DefWindowProc 
663                                          * function propagates the message to the window's parent.
664                                          * There should be no internal forwarding of the message, 
665                                          * since DefWindowProc propagates it up the parent chain 
666                                          * until it finds a window that processes it.
667                                          */
668                                         event = processWheelEvent(window, wParam, lParam);
669                                         break;
670                                 case WM_SETCURSOR:
671                                         /* The WM_SETCURSOR message is sent to a window if the mouse causes the cursor
672                                          * to move within a window and mouse input is not captured.
673                                          * This means we have to set the cursor shape every time the mouse moves!
674                                          * The DefWindowProc function uses this message to set the cursor to an 
675                                          * arrow if it is not in the client area.
676                                          */
677                                         if (LOWORD(lParam) == HTCLIENT) {
678                                                 // Load the current cursor
679                                                 window->loadCursor(window->getCursorVisibility(), window->getCursorShape());
680                                                 // Bypass call to DefWindowProc
681                                                 return 0;
682                                         } 
683                                         else {
684                                                 // Outside of client area show standard cursor
685                                                 window->loadCursor(true, GHOST_kStandardCursorDefault);
686                                         }
687                                         break;
688
689                                 ////////////////////////////////////////////////////////////////////////
690                                 // Mouse events, ignored
691                                 ////////////////////////////////////////////////////////////////////////
692                                 case WM_NCMOUSEMOVE:
693                                         /* The WM_NCMOUSEMOVE message is posted to a window when the cursor is moved 
694                                          * within the nonclient area of the window. This message is posted to the window 
695                                          * that contains the cursor. If a window has captured the mouse, this message is not posted.
696                                          */
697                                 case WM_NCHITTEST:
698                                         /* The WM_NCHITTEST message is sent to a window when the cursor moves, or 
699                                          * when a mouse button is pressed or released. If the mouse is not captured, 
700                                          * the message is sent to the window beneath the cursor. Otherwise, the message 
701                                          * is sent to the window that has captured the mouse. 
702                                          */
703                                         break;
704
705                                 ////////////////////////////////////////////////////////////////////////
706                                 // Window events, processed
707                                 ////////////////////////////////////////////////////////////////////////
708                                 case WM_CLOSE:
709                                         /* The WM_CLOSE message is sent as a signal that a window or an application should terminate. */
710                                         event = processWindowEvent(GHOST_kEventWindowClose, window);
711                                         break;
712                                 case WM_ACTIVATE:
713                                         /* The WM_ACTIVATE message is sent to both the window being activated and the window being 
714                                          * deactivated. If the windows use the same input queue, the message is sent synchronously, 
715                                          * first to the window procedure of the top-level window being deactivated, then to the window
716                                          * procedure of the top-level window being activated. If the windows use different input queues,
717                                          * the message is sent asynchronously, so the window is activated immediately. 
718                                          */
719                                         event = processWindowEvent(LOWORD(wParam) ? GHOST_kEventWindowActivate : GHOST_kEventWindowDeactivate, window);
720                                         break;
721                                 case WM_PAINT:
722                                         /* An application sends the WM_PAINT message when the system or another application 
723                                          * makes a request to paint a portion of an application's window. The message is sent
724                                          * when the UpdateWindow or RedrawWindow function is called, or by the DispatchMessage 
725                                          * function when the application obtains a WM_PAINT message by using the GetMessage or 
726                                          * PeekMessage function. 
727                                          */
728                                         event = processWindowEvent(GHOST_kEventWindowUpdate, window);
729                                         ::ValidateRect(hwnd, NULL);
730                                         break;
731                                 case WM_SIZE:
732                                         /* The WM_SIZE message is sent to a window after its size has changed.
733                                          * The WM_SIZE and WM_MOVE messages are not sent if an application handles the 
734                                          * WM_WINDOWPOSCHANGED message without calling DefWindowProc. It is more efficient
735                                          * to perform any move or size change processing during the WM_WINDOWPOSCHANGED 
736                                          * message without calling DefWindowProc.
737                                          */
738                                         event = processWindowEvent(GHOST_kEventWindowSize, window);
739                                 case WM_CAPTURECHANGED:
740                                         window->lostMouseCapture();
741                                         break;
742
743                                 ////////////////////////////////////////////////////////////////////////
744                                 // Window events, ignored
745                                 ////////////////////////////////////////////////////////////////////////
746                                 case WM_WINDOWPOSCHANGED:
747                                         /* The WM_WINDOWPOSCHANGED message is sent to a window whose size, position, or place
748                                          * in the Z order has changed as a result of a call to the SetWindowPos function or 
749                                          * another window-management function.
750                                          * The WM_SIZE and WM_MOVE messages are not sent if an application handles the 
751                                          * WM_WINDOWPOSCHANGED message without calling DefWindowProc. It is more efficient
752                                          * to perform any move or size change processing during the WM_WINDOWPOSCHANGED 
753                                          * message without calling DefWindowProc.
754                                          */
755                                 case WM_MOVE:
756                                         /* The WM_SIZE and WM_MOVE messages are not sent if an application handles the 
757                                          * WM_WINDOWPOSCHANGED message without calling DefWindowProc. It is more efficient
758                                          * to perform any move or size change processing during the WM_WINDOWPOSCHANGED 
759                                          * message without calling DefWindowProc. 
760                                          */
761                                 case WM_ERASEBKGND:
762                                         /* An application sends the WM_ERASEBKGND message when the window background must be 
763                                          * erased (for example, when a window is resized). The message is sent to prepare an 
764                                          * invalidated portion of a window for painting. 
765                                          */
766                                 case WM_NCPAINT:
767                                         /* An application sends the WM_NCPAINT message to a window when its frame must be painted. */
768                                 case WM_NCACTIVATE:
769                                         /* The WM_NCACTIVATE message is sent to a window when its nonclient area needs to be changed 
770                                          * to indicate an active or inactive state. 
771                                          */
772                                 case WM_DESTROY:
773                                         /* The WM_DESTROY message is sent when a window is being destroyed. It is sent to the window 
774                                          * procedure of the window being destroyed after the window is removed from the screen. 
775                                          * This message is sent first to the window being destroyed and then to the child windows 
776                                          * (if any) as they are destroyed. During the processing of the message, it can be assumed 
777                                          * that all child windows still exist. 
778                                          */
779                                 case WM_NCDESTROY:
780                                         /* The WM_NCDESTROY message informs a window that its nonclient area is being destroyed. The 
781                                          * DestroyWindow function sends the WM_NCDESTROY message to the window following the WM_DESTROY
782                                          * message. WM_DESTROY is used to free the allocated memory object associated with the window. 
783                                          */
784                                 case WM_KILLFOCUS:
785                                         /* The WM_KILLFOCUS message is sent to a window immediately before it loses the keyboard focus. */
786                                 case WM_SHOWWINDOW:
787                                         /* The WM_SHOWWINDOW message is sent to a window when the window is about to be hidden or shown. */
788                                 case WM_WINDOWPOSCHANGING:
789                                         /* The WM_WINDOWPOSCHANGING message is sent to a window whose size, position, or place in 
790                                          * the Z order is about to change as a result of a call to the SetWindowPos function or 
791                                          * another window-management function. 
792                                          */
793                                 case WM_SETFOCUS:
794                                         /* The WM_SETFOCUS message is sent to a window after it has gained the keyboard focus. */
795                                 case WM_MOVING:
796                                         /* The WM_MOVING message is sent to a window that the user is moving. By processing 
797                                          * this message, an application can monitor the size and position of the drag rectangle
798                                          * and, if needed, change its size or position.
799                                          */
800                                 case WM_ENTERSIZEMOVE:
801                                         /* The WM_ENTERSIZEMOVE message is sent one time to a window after it enters the moving 
802                                          * or sizing modal loop. The window enters the moving or sizing modal loop when the user 
803                                          * clicks the window's title bar or sizing border, or when the window passes the 
804                                          * WM_SYSCOMMAND message to the DefWindowProc function and the wParam parameter of the 
805                                          * message specifies the SC_MOVE or SC_SIZE value. The operation is complete when 
806                                          * DefWindowProc returns. 
807                                          */
808                                         break;
809                                         
810                                 ////////////////////////////////////////////////////////////////////////
811                                 // Other events
812                                 ////////////////////////////////////////////////////////////////////////
813                                 case WM_GETTEXT:
814                                         /* An application sends a WM_GETTEXT message to copy the text that 
815                                          * corresponds to a window into a buffer provided by the caller. 
816                                          */
817                                 case WM_ACTIVATEAPP:
818                                         /* The WM_ACTIVATEAPP message is sent when a window belonging to a 
819                                          * different application than the active window is about to be activated.
820                                          * The message is sent to the application whose window is being activated
821                                          * and to the application whose window is being deactivated. 
822                                          */
823                                 case WM_TIMER:
824                                         /* The WIN32 docs say:
825                                          * The WM_TIMER message is posted to the installing thread's message queue
826                                          * when a timer expires. You can process the message by providing a WM_TIMER
827                                          * case in the window procedure. Otherwise, the default window procedure will
828                                          * call the TimerProc callback function specified in the call to the SetTimer
829                                          * function used to install the timer. 
830                                          *
831                                          * In GHOST, we let DefWindowProc call the timer callback.
832                                          */
833                                         break;
834                         }
835                 }
836                 else {
837                         // Event found for a window before the pointer to the class has been set.
838                         GHOST_PRINT("GHOST_SystemWin32::wndProc: GHOST window event before creation\n")
839                         /* These are events we typically miss at this point:
840                            WM_GETMINMAXINFO     0x24
841                            WM_NCCREATE                  0x81
842                            WM_NCCALCSIZE                0x83
843                            WM_CREATE                    0x01
844                            We let DefWindowProc do the work.
845                         */
846                 }
847         }
848         else {
849                 // Events without valid hwnd
850                 GHOST_PRINT("GHOST_SystemWin32::wndProc: event without window\n")
851         }
852
853         if (event) {
854                 system->pushEvent(event);
855                 lResult = 0;
856         }
857         else {
858                 lResult = ::DefWindowProc(hwnd, msg, wParam, lParam);
859         }
860         return lResult;
861 }