/
SDL_sysevents.c
598 lines (533 loc) · 14.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@devolution.com
*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#include "SDL_getenv.h"
#include "SDL_events.h"
#include "SDL_video.h"
#include "SDL_error.h"
#include "SDL_syswm.h"
#include "SDL_sysevents.h"
#include "SDL_events_c.h"
#include "SDL_sysvideo.h"
#include "SDL_lowvideo.h"
#include "SDL_syswm_c.h"
#include "SDL_main.h"
#ifdef WMMSG_DEBUG
#include "wmmsg.h"
#endif
#ifdef _WIN32_WCE
#define NO_GETKEYBOARDSTATE
#endif
/* The window we use for everything... */
const char *SDL_Appname = NULL;
HINSTANCE SDL_Instance = NULL;
HWND SDL_Window = NULL;
RECT SDL_bounds = {0, 0, 0, 0};
int SDL_resizing = 0;
int mouse_relative = 0;
int posted = 0;
/* Functions called by the message processing function */
LONG
(*HandleMessage)(_THIS, HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)=NULL;
void (*WIN_RealizePalette)(_THIS);
void (*WIN_PaletteChanged)(_THIS, HWND window);
void (*WIN_SwapGamma)(_THIS);
void (*WIN_WinPAINT)(_THIS, HDC hdc);
#ifdef WM_MOUSELEAVE
/*
Special code to handle mouse leave events - this sucks...
http://support.microsoft.com/support/kb/articles/q183/1/07.asp
TrackMouseEvent() is only available on Win98 and WinNT.
_TrackMouseEvent() is available on Win95, but isn't yet in the mingw32
development environment, and only works on systems that have had IE 3.0
or newer installed on them (which is not the case with the base Win95).
Therefore, we implement our own version of _TrackMouseEvent() which
uses our own implementation if TrackMouseEvent() is not available.
*/
static BOOL (WINAPI *_TrackMouseEvent)(TRACKMOUSEEVENT *ptme) = NULL;
static VOID CALLBACK
TrackMouseTimerProc(HWND hWnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
RECT rect;
POINT pt;
GetClientRect(hWnd, &rect);
MapWindowPoints(hWnd, NULL, (LPPOINT)&rect, 2);
GetCursorPos(&pt);
if ( !PtInRect(&rect, pt) || (WindowFromPoint(pt) != hWnd) ) {
if ( !KillTimer(hWnd, idEvent) ) {
/* Error killing the timer! */
}
PostMessage(hWnd, WM_MOUSELEAVE, 0, 0);
}
}
static BOOL WINAPI WIN_TrackMouseEvent(TRACKMOUSEEVENT *ptme)
{
if ( ptme->dwFlags == TME_LEAVE ) {
return SetTimer(ptme->hwndTrack, ptme->dwFlags, 100,
(TIMERPROC)TrackMouseTimerProc);
}
return FALSE;
}
#endif /* WM_MOUSELEAVE */
/* Function to retrieve the current keyboard modifiers */
static void WIN_GetKeyboardState(void)
{
#ifndef NO_GETKEYBOARDSTATE
SDLMod state;
BYTE keyboard[256];
state = KMOD_NONE;
if ( GetKeyboardState(keyboard) ) {
if ( keyboard[VK_LSHIFT] & 0x80) {
state |= KMOD_LSHIFT;
}
if ( keyboard[VK_RSHIFT] & 0x80) {
state |= KMOD_RSHIFT;
}
if ( keyboard[VK_LCONTROL] & 0x80) {
state |= KMOD_LCTRL;
}
if ( keyboard[VK_RCONTROL] & 0x80) {
state |= KMOD_RCTRL;
}
if ( keyboard[VK_LMENU] & 0x80) {
state |= KMOD_LALT;
}
if ( keyboard[VK_RMENU] & 0x80) {
state |= KMOD_RALT;
}
137
if ( keyboard[VK_NUMLOCK] & 0x01) {
138
139
state |= KMOD_NUM;
}
140
if ( keyboard[VK_CAPITAL] & 0x01) {
141
142
143
144
145
146
147
state |= KMOD_CAPS;
}
}
SDL_SetModState(state);
#endif /* !NO_GETKEYBOARDSTATE */
}
148
149
150
151
/* The main Win32 event handler
DJM: This is no longer static as (DX5/DIB)_CreateWindow needs it
*/
LONG CALLBACK WinMessage(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
{
SDL_VideoDevice *this = current_video;
static int mouse_pressed = 0;
static int in_window = 0;
#ifdef WMMSG_DEBUG
fprintf(stderr, "Received windows message: ");
if ( msg > MAX_WMMSG ) {
fprintf(stderr, "%d", msg);
} else {
fprintf(stderr, "%s", wmtab[msg]);
}
fprintf(stderr, " -- 0x%X, 0x%X\n", wParam, lParam);
#endif
switch (msg) {
case WM_ACTIVATE: {
SDL_VideoDevice *this = current_video;
BOOL minimized;
Uint8 appstate;
minimized = HIWORD(wParam);
if ( !minimized && (LOWORD(wParam) != WA_INACTIVE) ) {
/* Gain the following states */
appstate = SDL_APPACTIVE|SDL_APPINPUTFOCUS;
if ( this->input_grab != SDL_GRAB_OFF ) {
WIN_GrabInput(this, SDL_GRAB_ON);
}
if ( !(SDL_GetAppState()&SDL_APPINPUTFOCUS) ) {
WIN_SwapGamma(this);
}
posted = SDL_PrivateAppActive(1, appstate);
WIN_GetKeyboardState();
} else {
/* Lose the following states */
appstate = SDL_APPINPUTFOCUS;
if ( minimized ) {
appstate |= SDL_APPACTIVE;
}
if ( this->input_grab != SDL_GRAB_OFF ) {
WIN_GrabInput(this, SDL_GRAB_OFF);
}
if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
WIN_SwapGamma(this);
}
posted = SDL_PrivateAppActive(0, appstate);
}
return(0);
}
break;
case WM_MOUSEMOVE: {
/* Mouse is handled by DirectInput when fullscreen */
205
if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
Sint16 x, y;
/* mouse has entered the window */
if ( ! in_window ) {
#ifdef WM_MOUSELEAVE
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = SDL_Window;
_TrackMouseEvent(&tme);
#endif /* WM_MOUSELEAVE */
in_window = TRUE;
posted = SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
}
/* mouse has moved within the window */
x = LOWORD(lParam);
y = HIWORD(lParam);
if ( mouse_relative ) {
POINT center;
center.x = (SDL_VideoSurface->w/2);
center.y = (SDL_VideoSurface->h/2);
x -= (Sint16)center.x;
y -= (Sint16)center.y;
if ( x || y ) {
ClientToScreen(SDL_Window, ¢er);
SetCursorPos(center.x, center.y);
posted = SDL_PrivateMouseMotion(0, 1, x, y);
}
} else {
posted = SDL_PrivateMouseMotion(0, 0, x, y);
}
}
}
return(0);
#ifdef WM_MOUSELEAVE
case WM_MOUSELEAVE: {
/* Mouse is handled by DirectInput when fullscreen */
248
if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
/* mouse has left the window */
/* or */
/* Elvis has left the building! */
in_window = FALSE;
posted = SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
}
}
return(0);
#endif /* WM_MOUSELEAVE */
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP: {
/* Mouse is handled by DirectInput when fullscreen */
266
if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
267
268
269
Sint16 x, y;
Uint8 button, state;
270
271
272
273
274
275
276
/* DJM:
We want the SDL window to take focus so that
it acts like a normal windows "component"
(e.g. gains keyboard focus on a mouse click).
*/
SetFocus(SDL_Window);
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
/* Figure out which button to use */
switch (msg) {
case WM_LBUTTONDOWN:
button = 1;
state = SDL_PRESSED;
break;
case WM_LBUTTONUP:
button = 1;
state = SDL_RELEASED;
break;
case WM_MBUTTONDOWN:
button = 2;
state = SDL_PRESSED;
break;
case WM_MBUTTONUP:
button = 2;
state = SDL_RELEASED;
break;
case WM_RBUTTONDOWN:
button = 3;
state = SDL_PRESSED;
break;
case WM_RBUTTONUP:
button = 3;
state = SDL_RELEASED;
break;
default:
/* Eh? Unknown button? */
return(0);
}
if ( state == SDL_PRESSED ) {
/* Grab mouse so we get up events */
if ( ++mouse_pressed > 0 ) {
SetCapture(hwnd);
}
} else {
/* Release mouse after all up events */
if ( --mouse_pressed <= 0 ) {
ReleaseCapture();
mouse_pressed = 0;
}
}
if ( mouse_relative ) {
/* RJR: March 28, 2000
report internal mouse position if in relative mode */
x = 0; y = 0;
} else {
x = (Sint16)LOWORD(lParam);
y = (Sint16)HIWORD(lParam);
}
posted = SDL_PrivateMouseButton(
state, button, x, y);
}
}
return(0);
333
334
335
336
337
338
#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
case WM_MOUSEWHEEL:
if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
Sint16 x, y;
int move = (short)HIWORD(wParam);
339
340
341
342
343
344
if ( move ) {
Uint8 button;
if ( move > 0 )
button = 4;
else
button = 5;
345
posted = SDL_PrivateMouseButton(
346
SDL_PRESSED, button, 0, 0);
347
348
349
350
351
}
}
return(0);
#endif
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
#ifdef WM_GETMINMAXINFO
/* This message is sent as a way for us to "check" the values
* of a position change. If we don't like it, we can adjust
* the values before they are changed.
*/
case WM_GETMINMAXINFO: {
MINMAXINFO *info;
RECT size;
int x, y;
int width;
int height;
/* We don't want to clobber an internal resize */
if ( SDL_resizing )
return(0);
/* We allow resizing with the SDL_RESIZABLE flag */
if ( SDL_PublicSurface &&
(SDL_PublicSurface->flags & SDL_RESIZABLE) ) {
return(0);
}
/* Get the current position of our window */
GetWindowRect(SDL_Window, &size);
x = size.left;
y = size.top;
/* Calculate current width and height of our window */
size.top = 0;
size.left = 0;
if ( SDL_PublicSurface != NULL ) {
size.bottom = SDL_PublicSurface->h;
size.right = SDL_PublicSurface->w;
} else {
size.bottom = 0;
size.right = 0;
}
AdjustWindowRect(&size, GetWindowLong(hwnd, GWL_STYLE),
FALSE);
width = size.right - size.left;
height = size.bottom - size.top;
/* Fix our size to the current size */
info = (MINMAXINFO *)lParam;
info->ptMaxSize.x = width;
info->ptMaxSize.y = height;
info->ptMaxPosition.x = x;
info->ptMaxPosition.y = y;
info->ptMinTrackSize.x = width;
info->ptMinTrackSize.y = height;
info->ptMaxTrackSize.x = width;
info->ptMaxTrackSize.y = height;
}
return(0);
#endif /* WM_GETMINMAXINFO */
case WM_MOVE: {
SDL_VideoDevice *this = current_video;
GetClientRect(SDL_Window, &SDL_bounds);
ClientToScreen(SDL_Window, (LPPOINT)&SDL_bounds);
ClientToScreen(SDL_Window, (LPPOINT)&SDL_bounds+1);
if ( this->input_grab != SDL_GRAB_OFF ) {
ClipCursor(&SDL_bounds);
}
}
break;
case WM_SIZE: {
if ( SDL_PublicSurface &&
(SDL_PublicSurface->flags & SDL_RESIZABLE) ) {
SDL_PrivateResize(LOWORD(lParam), HIWORD(lParam));
}
return(0);
}
break;
/* We need to set the cursor */
case WM_SETCURSOR: {
Uint16 hittest;
hittest = LOWORD(lParam);
if ( hittest == HTCLIENT ) {
SetCursor(SDL_hcursor);
return(TRUE);
}
}
break;
/* We are about to get palette focus! */
case WM_QUERYNEWPALETTE: {
WIN_RealizePalette(current_video);
return(TRUE);
}
break;
/* Another application changed the palette */
case WM_PALETTECHANGED: {
WIN_PaletteChanged(current_video, (HWND)wParam);
}
break;
/* We were occluded, refresh our display */
case WM_PAINT: {
HDC hdc;
PAINTSTRUCT ps;
hdc = BeginPaint(SDL_Window, &ps);
if ( current_video->screen &&
!(current_video->screen->flags & SDL_OPENGL) ) {
WIN_WinPAINT(current_video, hdc);
}
EndPaint(SDL_Window, &ps);
}
return(0);
468
/* DJM: Send an expose event in this case */
469
case WM_ERASEBKGND: {
470
posted = SDL_PrivateExpose();
471
}
472
return(0);
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
case WM_CLOSE: {
if ( (posted = SDL_PrivateQuit()) )
PostQuitMessage(0);
}
return(0);
case WM_DESTROY: {
PostQuitMessage(0);
}
return(0);
default: {
/* Special handling by the video driver */
if (HandleMessage) {
return(HandleMessage(current_video,
hwnd, msg, wParam, lParam));
}
}
break;
}
return(DefWindowProc(hwnd, msg, wParam, lParam));
}
497
/* Allow the application handle to be stored and retrieved later */
498
static void *SDL_handle = NULL;
499
500
void SDL_SetModuleHandle(void *handle)
501
502
503
{
SDL_handle = handle;
}
504
void *SDL_GetModuleHandle(void)
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
{
void *handle;
if ( SDL_handle ) {
handle = SDL_handle;
} else {
/* Warning:
If SDL is built as a DLL, this will return a handle to
the DLL, not the application, and DirectInput may fail
to initialize.
*/
handle = GetModuleHandle(NULL);
}
return(handle);
}
521
522
523
524
/* This allows the SDL_WINDOWID hack */
const char *SDL_windowid = NULL;
/* Register the class for this application -- exported for winmain.c */
525
int SDL_RegisterApp(char *name, Uint32 style, void *hInst)
526
527
528
529
530
531
532
533
534
535
536
537
538
{
static int initialized = 0;
WNDCLASS class;
#ifdef WM_MOUSELEAVE
HMODULE handle;
#endif
/* Only do this once... */
if ( initialized ) {
return(0);
}
/* This function needs to be passed the correct process handle
539
by the application.
540
541
*/
if ( ! hInst ) {
542
hInst = SDL_GetModuleHandle();
543
544
545
546
547
548
549
}
/* Register the application class */
class.hCursor = NULL;
#ifdef _WIN32_WCE
{
/* WinCE uses the UNICODE version */
550
551
int nLen = strlen(name)+1;
LPWSTR lpszW = alloca(nLen*2);
552
553
554
MultiByteToWideChar(CP_ACP, 0, name, -1, lpszW, nLen);
class.hIcon = LoadImage(hInst, lpszW, IMAGE_ICON,
0, 0, LR_DEFAULTCOLOR);
555
class.lpszMenuName = NULL;
556
557
558
559
560
561
562
563
564
class.lpszClassName = lpszW;
}
#else
class.hIcon = LoadImage(hInst, name, IMAGE_ICON,
0, 0, LR_DEFAULTCOLOR);
class.lpszMenuName = "(none)";
class.lpszClassName = name;
#endif /* _WIN32_WCE */
class.hbrBackground = NULL;
565
class.hInstance = hInst;
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
class.style = style;
#ifdef HAVE_OPENGL
class.style |= CS_OWNDC;
#endif
class.lpfnWndProc = WinMessage;
class.cbWndExtra = 0;
class.cbClsExtra = 0;
if ( ! RegisterClass(&class) ) {
SDL_SetError("Couldn't register application class");
return(-1);
}
SDL_Appname = name;
SDL_Instance = hInst;
#ifdef WM_MOUSELEAVE
/* Get the version of TrackMouseEvent() we use */
_TrackMouseEvent = NULL;
handle = GetModuleHandle("USER32.DLL");
if ( handle ) {
_TrackMouseEvent = (BOOL (WINAPI *)(TRACKMOUSEEVENT *))GetProcAddress(handle, "TrackMouseEvent");
}
if ( _TrackMouseEvent == NULL ) {
_TrackMouseEvent = WIN_TrackMouseEvent;
}
#endif /* WM_MOUSELEAVE */
/* Check for SDL_WINDOWID hack */
SDL_windowid = getenv("SDL_WINDOWID");
initialized = 1;
return(0);
}