This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_win32events.c
694 lines (619 loc) · 21.5 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2009 Sam Lantinga
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
22
23
24
25
26
27
#if (_WIN32_WINNT < 0x0501)
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
28
29
30
31
32
33
34
35
36
#include "SDL_config.h"
#include "SDL_win32video.h"
#include "SDL_syswm.h"
#include "SDL_vkeys.h"
#include "../../events/SDL_events_c.h"
/*#define WMMSG_DEBUG*/
#ifdef WMMSG_DEBUG
37
#include <stdio.h>
38
39
40
41
#include "wmmsg.h"
#endif
/* Masks for processing the windows KEYDOWN and KEYUP messages */
42
43
#define REPEATED_KEYMASK (1<<30)
#define EXTENDED_KEYMASK (1<<24)
44
45
#define VK_ENTER 10 /* Keypad Enter ... no VKEY defined? */
46
47
48
49
50
51
52
53
54
55
56
/* Make sure XBUTTON stuff is defined that isn't in older Platform SDKs... */
#ifndef WM_XBUTTONDOWN
#define WM_XBUTTONDOWN 0x020B
#endif
#ifndef WM_XBUTTONUP
#define WM_XBUTTONUP 0x020C
#endif
#ifndef GET_XBUTTON_WPARAM
#define GET_XBUTTON_WPARAM(w) (HIWORD(w))
#endif
57
58
59
#ifndef WM_INPUT
#define WM_INPUT 0x00ff
#endif
60
61
62
63
64
65
66
extern HCTX *g_hCtx;
extern HANDLE *mice;
extern int total_mice;
extern int tablet;
int pressure = 0; /* the pressure reported by the tablet */
67
68
69
static WPARAM
RemapVKEY(WPARAM wParam, LPARAM lParam)
{
70
int i;
71
BYTE scancode = (BYTE) ((lParam >> 16) & 0xFF);
72
73
74
75
76
/* Windows remaps alphabetic keys based on current layout.
We try to provide USB scancodes, so undo this mapping.
*/
if (wParam >= 'A' && wParam <= 'Z') {
77
78
79
if (scancode != alpha_scancodes[wParam - 'A']) {
for (i = 0; i < SDL_arraysize(alpha_scancodes); ++i) {
if (scancode == alpha_scancodes[i]) {
80
81
82
83
84
85
wParam = 'A' + i;
break;
}
}
}
}
86
87
88
89
/* Keypad keys are a little trickier, we always scan for them. */
for (i = 0; i < SDL_arraysize(keypad_scancodes); ++i) {
if (scancode == keypad_scancodes[i]) {
90
wParam = VK_NUMPAD0 + i;
91
92
93
94
break;
}
}
95
96
97
return wParam;
}
98
99
100
101
LRESULT CALLBACK
WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
SDL_WindowData *data;
102
103
RAWINPUT *raw;
PACKET packet;
104
105
106
107
108
109
110
111
112
113
114
115
116
/* Send a SDL_SYSWMEVENT if the application wants them */
if (SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE) {
SDL_SysWMmsg wmmsg;
SDL_VERSION(&wmmsg.version);
wmmsg.hwnd = hwnd;
wmmsg.msg = msg;
wmmsg.wParam = wParam;
wmmsg.lParam = lParam;
SDL_SendSysWMEvent(&wmmsg);
}
117
118
119
120
121
122
/* Get the window data for the window */
data = (SDL_WindowData *) GetProp(hwnd, TEXT("SDL_WindowData"));
if (!data) {
return CallWindowProc(DefWindowProc, hwnd, msg, wParam, lParam);
}
#ifdef WMMSG_DEBUG
123
124
125
126
127
128
129
130
131
132
{
FILE *log = fopen("wmmsg.txt", "a");
fprintf(log, "Received windows message: %p ", hwnd);
if (msg > MAX_WMMSG) {
fprintf(log, "%d", msg);
} else {
fprintf(log, "%s", wmtab[msg]);
}
fprintf(log, " -- 0x%X, 0x%X\n", wParam, lParam);
fclose(log);
133
}
134
135
136
137
138
#endif
switch (msg) {
139
140
141
case WT_PACKET:
{
/* if we receive such data we need to update the pressure */
142
143
144
SDL_VideoData *videodata = data->videodata;
if (videodata->wintabDLL
&& videodata->WTPacket((HCTX) lParam, wParam, &packet)) {
145
146
147
148
149
150
151
152
153
154
SDL_ChangeEnd(tablet, (int) packet.pkCursor);
pressure = (int) packet.pkNormalPressure;
}
}
break;
case WT_PROXIMITY:
{
/* checking where the proximity message showed up */
int h_context = LOWORD(lParam);
155
POINT point;
156
157
158
159
160
GetCursorPos(&point);
ScreenToClient(hwnd, &point);
/* are we in proximity or out of proximity */
if (h_context == 0) {
161
SDL_SendProximity(tablet, point.x, point.y, SDL_PROXIMITYOUT);
162
} else {
163
SDL_SendProximity(tablet, point.x, point.y, SDL_PROXIMITYIN);
164
165
166
167
}
}
break;
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
205
206
207
208
209
210
211
case WM_SHOWWINDOW:
{
if (wParam) {
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN, 0,
0);
} else {
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_HIDDEN, 0,
0);
}
}
break;
case WM_ACTIVATE:
{
int index;
SDL_Keyboard *keyboard;
BOOL minimized;
minimized = HIWORD(wParam);
index = data->videodata->keyboard;
keyboard = SDL_GetKeyboard(index);
if (!minimized && (LOWORD(wParam) != WA_INACTIVE)) {
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN,
0, 0);
SDL_SendWindowEvent(data->windowID,
SDL_WINDOWEVENT_RESTORED, 0, 0);
if (IsZoomed(hwnd)) {
SDL_SendWindowEvent(data->windowID,
SDL_WINDOWEVENT_MAXIMIZED, 0, 0);
}
if (keyboard && keyboard->focus != data->windowID) {
SDL_SetKeyboardFocus(index, data->windowID);
}
/* FIXME: Update keyboard state */
} else {
if (keyboard && keyboard->focus == data->windowID) {
SDL_SetKeyboardFocus(index, 0);
}
if (minimized) {
SDL_SendWindowEvent(data->windowID,
SDL_WINDOWEVENT_MINIMIZED, 0, 0);
}
}
}
212
return (0);
213
214
case WM_INPUT: /* mouse events */
215
{
216
217
LPBYTE lpb;
const RAWINPUTHEADER *header;
218
int index;
219
220
221
int i;
int size = 0;
const RAWMOUSE *raw_mouse = NULL;
222
POINT point;
223
USHORT flags;
224
int w, h;
225
226
227
228
/* we're collecting data from the mouse */
GetRawInputData((HRAWINPUT) lParam, RID_INPUT, NULL, &size,
sizeof(RAWINPUTHEADER));
229
lpb = SDL_stack_alloc(BYTE, size);
230
231
232
233
234
235
236
237
238
239
240
241
GetRawInputData((HRAWINPUT) lParam, RID_INPUT, lpb, &size,
sizeof(RAWINPUTHEADER));
raw = (RAWINPUT *) lpb;
header = &raw->header;
flags = raw->data.mouse.usButtonFlags;
/* we're checking which mouse generated the event */
for (i = 0; i < total_mice; ++i) {
if (mice[i] == header->hDevice) {
index = i;
break;
}
242
}
243
/* FIXME: Doesn't this defeat the point of using raw input? */
244
GetCursorPos(&point);
245
246
247
248
249
250
251
252
253
254
ScreenToClient(hwnd, &point);
SDL_GetWindowSize(data->windowID, &w, &h);
if (point.x >= 0 && point.y >= 0 && point.x < w && point.y < h) {
SDL_SetMouseFocus(index, data->windowID);
} else {
SDL_SetMouseFocus(index, 0);
/* FIXME: Should we be doing anything else here? */
break;
}
255
256
/* if the message was sent by a tablet we have to send also pressure */
257
if (index == tablet) {
258
SDL_SendMouseMotion(index, 0, point.x, point.y, pressure);
259
} else {
260
SDL_SendMouseMotion(index, 0, point.x, point.y, 0);
261
262
}
/* we're sending mouse buttons messages to check up if sth changed */
263
if (flags & RI_MOUSE_LEFT_BUTTON_DOWN) {
264
SDL_SendMouseButton(index, SDL_PRESSED, SDL_BUTTON_LEFT);
265
} else if (flags & RI_MOUSE_LEFT_BUTTON_UP) {
266
267
SDL_SendMouseButton(index, SDL_RELEASED, SDL_BUTTON_LEFT);
}
268
if (flags & RI_MOUSE_MIDDLE_BUTTON_DOWN) {
269
SDL_SendMouseButton(index, SDL_PRESSED, SDL_BUTTON_MIDDLE);
270
} else if (flags & RI_MOUSE_MIDDLE_BUTTON_UP) {
271
272
SDL_SendMouseButton(index, SDL_RELEASED, SDL_BUTTON_MIDDLE);
}
273
if (flags & RI_MOUSE_RIGHT_BUTTON_DOWN) {
274
SDL_SendMouseButton(index, SDL_PRESSED, SDL_BUTTON_RIGHT);
275
} else if (flags & RI_MOUSE_RIGHT_BUTTON_UP) {
276
277
SDL_SendMouseButton(index, SDL_RELEASED, SDL_BUTTON_RIGHT);
}
278
279
280
281
282
283
284
285
286
287
if (flags & RI_MOUSE_BUTTON_4_DOWN) {
SDL_SendMouseButton(index, SDL_PRESSED, SDL_BUTTON_X1);
} else if (flags & RI_MOUSE_BUTTON_4_UP) {
SDL_SendMouseButton(index, SDL_RELEASED, SDL_BUTTON_X1);
}
if (flags & RI_MOUSE_BUTTON_5_DOWN) {
SDL_SendMouseButton(index, SDL_PRESSED, SDL_BUTTON_X2);
} else if (flags & RI_MOUSE_BUTTON_5_UP) {
SDL_SendMouseButton(index, SDL_RELEASED, SDL_BUTTON_X2);
}
288
289
290
291
292
if (flags & RI_MOUSE_WHEEL) {
if (raw->data.mouse.usButtonData != 0) {
SDL_SendMouseWheel(index, 0,
raw->data.mouse.usButtonData);
}
293
}
294
SDL_stack_free(lpb);
295
296
297
298
299
}
return (0);
case WM_MOUSELEAVE:
{
300
int i;
301
302
303
for (i = 0; i < SDL_GetNumMice(); ++i) {
SDL_Mouse *mouse = SDL_GetMouse(i);
304
305
306
307
if (mouse->focus == data->windowID) {
SDL_SetMouseFocus(i, 0);
}
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
}
}
return (0);
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
{
int index;
/* Ignore repeated keys */
if (lParam & REPEATED_KEYMASK) {
return (0);
}
index = data->videodata->keyboard;
323
wParam = RemapVKEY(wParam, lParam);
324
325
326
327
328
329
330
331
332
333
switch (wParam) {
case VK_CONTROL:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RCONTROL;
else
wParam = VK_LCONTROL;
break;
case VK_SHIFT:
/* EXTENDED trick doesn't work here */
{
334
335
Uint8 *state = SDL_GetKeyboardState(NULL);
if (state[SDL_SCANCODE_LSHIFT] == SDL_RELEASED
336
337
&& (GetKeyState(VK_LSHIFT) & 0x8000)) {
wParam = VK_LSHIFT;
338
} else if (state[SDL_SCANCODE_RSHIFT] == SDL_RELEASED
339
340
341
342
343
344
345
346
347
348
349
350
351
352
&& (GetKeyState(VK_RSHIFT) & 0x8000)) {
wParam = VK_RSHIFT;
} else {
/* Probably a key repeat */
return (0);
}
}
break;
case VK_MENU:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RMENU;
else
wParam = VK_LMENU;
break;
353
354
355
356
case VK_RETURN:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_ENTER;
break;
357
}
358
359
360
361
if (wParam < 256) {
SDL_SendKeyboardKey(index, SDL_PRESSED,
data->videodata->key_layout[wParam]);
}
362
363
364
365
366
367
368
369
370
}
return (0);
case WM_SYSKEYUP:
case WM_KEYUP:
{
int index;
index = data->videodata->keyboard;
371
wParam = RemapVKEY(wParam, lParam);
372
373
374
375
376
377
378
379
380
381
switch (wParam) {
case VK_CONTROL:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RCONTROL;
else
wParam = VK_LCONTROL;
break;
case VK_SHIFT:
/* EXTENDED trick doesn't work here */
{
382
383
Uint8 *state = SDL_GetKeyboardState(NULL);
if (state[SDL_SCANCODE_LSHIFT] == SDL_PRESSED
384
385
&& !(GetKeyState(VK_LSHIFT) & 0x8000)) {
wParam = VK_LSHIFT;
386
} else if (state[SDL_SCANCODE_RSHIFT] == SDL_PRESSED
387
388
389
390
391
392
393
394
395
396
397
398
399
400
&& !(GetKeyState(VK_RSHIFT) & 0x8000)) {
wParam = VK_RSHIFT;
} else {
/* Probably a key repeat */
return (0);
}
}
break;
case VK_MENU:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_RMENU;
else
wParam = VK_LMENU;
break;
401
402
403
404
case VK_RETURN:
if (lParam & EXTENDED_KEYMASK)
wParam = VK_ENTER;
break;
405
}
406
407
408
/* Windows only reports keyup for print screen */
if (wParam == VK_SNAPSHOT
409
410
&& SDL_GetKeyboardState(NULL)[SDL_SCANCODE_PRINTSCREEN] ==
SDL_RELEASED) {
411
SDL_SendKeyboardKey(index, SDL_PRESSED,
412
413
414
415
416
data->videodata->key_layout[wParam]);
}
if (wParam < 256) {
SDL_SendKeyboardKey(index, SDL_RELEASED,
data->videodata->key_layout[wParam]);
417
418
419
420
}
}
return (0);
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
case WM_CHAR:
{
char text[4];
/* Convert to UTF-8 and send it on... */
if (wParam <= 0x7F) {
text[0] = (char) wParam;
text[1] = '\0';
} else if (wParam <= 0x7FF) {
text[0] = 0xC0 | (char) ((wParam >> 6) & 0x1F);
text[1] = 0x80 | (char) (wParam & 0x3F);
text[2] = '\0';
} else {
text[0] = 0xE0 | (char) ((wParam >> 12) & 0x0F);
text[1] = 0x80 | (char) ((wParam >> 6) & 0x3F);
text[2] = 0x80 | (char) (wParam & 0x3F);
text[3] = '\0';
}
SDL_SendKeyboardText(data->videodata->keyboard, text);
}
return (0);
443
444
445
446
447
448
case WM_INPUTLANGCHANGE:
{
WIN_UpdateKeymap(data->videodata->keyboard);
}
return (1);
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
case WM_GETMINMAXINFO:
{
MINMAXINFO *info;
RECT size;
int x, y;
int w, h;
int style;
/* If we allow resizing, let the resize happen naturally */
if (SDL_GetWindowFlags(data->windowID) & SDL_WINDOW_RESIZABLE) {
return (0);
}
/* Get the current position of our window */
GetWindowRect(hwnd, &size);
x = size.left;
y = size.top;
/* Calculate current size of our window */
SDL_GetWindowSize(data->windowID, &w, &h);
size.top = 0;
size.left = 0;
size.bottom = h;
size.right = w;
/* DJM - according to the docs for GetMenu(), the
return value is undefined if hwnd is a child window.
Aparently it's too difficult for MS to check
inside their function, so I have to do it here.
*/
style = GetWindowLong(hwnd, GWL_STYLE);
480
481
482
AdjustWindowRect(&size, style,
style & WS_CHILDWINDOW ? FALSE : GetMenu(hwnd)
!= NULL);
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
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
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
w = size.right - size.left;
h = size.bottom - size.top;
/* Fix our size to the current size */
info = (MINMAXINFO *) lParam;
info->ptMaxSize.x = w;
info->ptMaxSize.y = h;
info->ptMaxPosition.x = x;
info->ptMaxPosition.y = y;
info->ptMinTrackSize.x = w;
info->ptMinTrackSize.y = h;
info->ptMaxTrackSize.x = w;
info->ptMaxTrackSize.y = h;
}
return (0);
case WM_WINDOWPOSCHANGED:
{
RECT rect;
int x, y;
int w, h;
Uint32 window_flags;
GetClientRect(hwnd, &rect);
ClientToScreen(hwnd, (LPPOINT) & rect);
ClientToScreen(hwnd, (LPPOINT) & rect + 1);
window_flags = SDL_GetWindowFlags(data->windowID);
if ((window_flags & SDL_WINDOW_INPUT_GRABBED) &&
(window_flags & SDL_WINDOW_INPUT_FOCUS)) {
ClipCursor(&rect);
}
x = rect.left;
y = rect.top;
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_MOVED, x, y);
w = rect.right - rect.left;
h = rect.bottom - rect.top;
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_RESIZED, w,
h);
}
break;
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:
{
RECT rect;
if (GetUpdateRect(hwnd, &rect, FALSE)) {
ValidateRect(hwnd, &rect);
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_EXPOSED,
0, 0);
}
}
return (0);
/* We'll do our own drawing, prevent flicker */
case WM_ERASEBKGND:
{
}
return (1);
case WM_SYSCOMMAND:
{
/* Don't start the screensaver or blank the monitor in fullscreen apps */
if ((wParam & 0xFFF0) == SC_SCREENSAVE ||
(wParam & 0xFFF0) == SC_MONITORPOWER) {
if (SDL_GetWindowFlags(data->windowID) &
SDL_WINDOW_FULLSCREEN) {
return (0);
}
}
}
break;
case WM_CLOSE:
{
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_CLOSE, 0, 0);
}
return (0);
}
return CallWindowProc(data->wndproc, hwnd, msg, wParam, lParam);
}
void
WIN_PumpEvents(_THIS)
{
MSG msg;
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
static int app_registered = 0;
LPTSTR SDL_Appname = NULL;
Uint32 SDL_Appstyle = 0;
HINSTANCE SDL_Instance = NULL;
/* Register the class for this application */
int
SDL_RegisterApp(char *name, Uint32 style, void *hInst)
{
WNDCLASS class;
/* Only do this once... */
if (app_registered) {
++app_registered;
return (0);
}
if (!name && !SDL_Appname) {
name = "SDL_app";
SDL_Appstyle = (CS_BYTEALIGNCLIENT | CS_OWNDC);
SDL_Instance = hInst ? hInst : GetModuleHandle(NULL);
}
if (name) {
SDL_Appname = WIN_UTF8ToString(name);
SDL_Appstyle = style;
SDL_Instance = hInst ? hInst : GetModuleHandle(NULL);
}
/* Register the application class */
class.hCursor = NULL;
640
641
642
class.hIcon =
LoadImage(SDL_Instance, SDL_Appname, IMAGE_ICON, 0, 0,
LR_DEFAULTCOLOR);
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
class.lpszMenuName = NULL;
class.lpszClassName = SDL_Appname;
class.hbrBackground = NULL;
class.hInstance = SDL_Instance;
class.style = SDL_Appstyle;
class.lpfnWndProc = DefWindowProc;
class.cbWndExtra = 0;
class.cbClsExtra = 0;
if (!RegisterClass(&class)) {
SDL_SetError("Couldn't register application class");
return (-1);
}
app_registered = 1;
return (0);
}
/* Unregisters the windowclass registered in SDL_RegisterApp above. */
void
SDL_UnregisterApp()
{
WNDCLASS class;
/* SDL_RegisterApp might not have been called before */
if (!app_registered) {
return;
}
--app_registered;
if (app_registered == 0) {
/* Check for any registered window classes. */
if (GetClassInfo(SDL_Instance, SDL_Appname, &class)) {
UnregisterClass(SDL_Appname, SDL_Instance);
}
SDL_free(SDL_Appname);
SDL_Appname = NULL;
}
}
/* Sets an error message based on GetLastError() */
void
WIN_SetError(const char *prefix)
{
TCHAR buffer[1024];
char *message;
687
688
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0,
buffer, SDL_arraysize(buffer), NULL);
689
690
691
692
693
694
message = WIN_StringToUTF8(buffer);
SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ":" : "", message);
SDL_free(message);
}
/* vi: set ts=4 sw=4 expandtab: */