/
SDL_windowswindow.c
998 lines (851 loc) · 30.5 KB
1
2
/*
Simple DirectMedia Layer
3
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
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
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_WINDOWS
#include "../../core/windows/SDL_windows.h"
#include "SDL_assert.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_keyboard_c.h"
#include "../../events/SDL_mouse_c.h"
#include "SDL_windowsvideo.h"
#include "SDL_windowswindow.h"
#include "SDL_hints.h"
/* Dropfile support */
#include <shellapi.h>
/* This is included after SDL_windowsvideo.h, which includes windows.h */
#include "SDL_syswm.h"
/* Windows CE compatibility */
#ifndef SWP_NOCOPYBITS
#define SWP_NOCOPYBITS 0
#endif
/* Fake window to help with DirectInput events. */
HWND SDL_HelperWindow = NULL;
static WCHAR *SDL_HelperWindowClassName = TEXT("SDLHelperWindowInputCatcher");
static WCHAR *SDL_HelperWindowName = TEXT("SDLHelperWindowInputMsgWindow");
static ATOM SDL_HelperWindowClass = 0;
54
55
56
57
58
59
/* For borderless Windows, still want the following flags:
- WS_CAPTION: this seems to enable the Windows minimize animation
- WS_SYSMENU: enables system context menu on task bar
- WS_MINIMIZEBOX: window will respond to Windows minimize commands sent to all windows, such as windows key + m, shaking title bar, etc.
This will also cause the task bar to overlap the window and other windowed behaviors, so only use this for windows that shouldn't appear to be fullscreen
*/
60
61
62
#define STYLE_BASIC (WS_CLIPSIBLINGS | WS_CLIPCHILDREN)
#define STYLE_FULLSCREEN (WS_POPUP)
63
64
#define STYLE_BORDERLESS (WS_POPUP)
#define STYLE_BORDERLESS_WINDOWED (WS_POPUP | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX)
65
66
67
68
69
70
71
72
73
74
75
76
#define STYLE_NORMAL (WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX)
#define STYLE_RESIZABLE (WS_THICKFRAME | WS_MAXIMIZEBOX)
#define STYLE_MASK (STYLE_FULLSCREEN | STYLE_BORDERLESS | STYLE_NORMAL | STYLE_RESIZABLE)
static DWORD
GetWindowStyle(SDL_Window * window)
{
DWORD style = 0;
if (window->flags & SDL_WINDOW_FULLSCREEN) {
style |= STYLE_FULLSCREEN;
} else {
77
if (window->flags & SDL_WINDOW_BORDERLESS) {
78
79
80
81
82
83
84
85
86
87
88
89
90
91
/* SDL 2.1:
This behavior more closely matches other platform where the window is borderless
but still interacts with the window manager (e.g. task bar shows above it, it can
be resized to fit within usable desktop area, etc.) so this should be the behavior
for a future SDL release.
If you want a borderless window the size of the desktop that looks like a fullscreen
window, then you should use the SDL_WINDOW_FULLSCREEN_DESKTOP flag.
*/
if (SDL_GetHintBoolean("SDL_BORDERLESS_WINDOWED_STYLE", SDL_FALSE)) {
style |= STYLE_BORDERLESS_WINDOWED;
} else {
style |= STYLE_BORDERLESS;
}
92
93
94
95
96
} else {
style |= STYLE_NORMAL;
}
/* You can have a borderless resizable window */
97
98
99
if (window->flags & SDL_WINDOW_RESIZABLE) {
style |= STYLE_RESIZABLE;
}
100
101
102
103
104
/* Need to set initialize minimize style, or when we call ShowWindow with WS_MINIMIZE it will activate a random window */
if (window->flags & SDL_WINDOW_MINIMIZED) {
style |= WS_MINIMIZE;
}
105
106
107
108
109
}
return style;
}
static void
110
WIN_AdjustWindowRectWithStyle(SDL_Window *window, DWORD style, BOOL menu, int *x, int *y, int *width, int *height, SDL_bool use_current)
111
112
113
114
115
{
RECT rect;
rect.left = 0;
rect.top = 0;
116
117
rect.right = (use_current ? window->w : window->windowed.w);
rect.bottom = (use_current ? window->h : window->windowed.h);
118
119
120
121
/* borderless windows will have WM_NCCALCSIZE return 0 for the non-client area. When this happens, it looks like windows will send a resize message
expanding the window client area to the previous window + chrome size, so shouldn't need to adjust the window size for the set styles.
*/
122
123
if (!(window->flags & SDL_WINDOW_BORDERLESS))
AdjustWindowRectEx(&rect, style, menu, 0);
124
125
126
*x = (use_current ? window->x : window->windowed.x) + rect.left;
*y = (use_current ? window->y : window->windowed.y) + rect.top;
127
128
129
130
131
*width = (rect.right - rect.left);
*height = (rect.bottom - rect.top);
}
static void
132
WIN_AdjustWindowRect(SDL_Window *window, int *x, int *y, int *width, int *height, SDL_bool use_current)
133
134
135
136
137
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
HWND hwnd = data->hwnd;
DWORD style;
BOOL menu;
138
139
140
141
style = GetWindowLong(hwnd, GWL_STYLE);
menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);
WIN_AdjustWindowRectWithStyle(window, style, menu, x, y, width, height, use_current);
142
143
144
145
146
147
148
149
}
static void
WIN_SetWindowPositionInternal(_THIS, SDL_Window * window, UINT flags)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
HWND hwnd = data->hwnd;
HWND top;
150
151
152
153
int x, y;
int w, h;
/* Figure out what the window area will be */
154
if (SDL_ShouldAllowTopmost() && ((window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS)) == (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS) || (window->flags & SDL_WINDOW_ALWAYS_ON_TOP))) {
155
156
157
158
top = HWND_TOPMOST;
} else {
top = HWND_NOTOPMOST;
}
159
160
WIN_AdjustWindowRect(window, &x, &y, &w, &h, SDL_TRUE);
161
162
data->expected_resize = SDL_TRUE;
163
SetWindowPos(hwnd, top, x, y, w, h, flags);
164
165
166
167
data->expected_resize = SDL_FALSE;
}
static int
168
SetupWindowData(_THIS, SDL_Window * window, HWND hwnd, HWND parent, SDL_bool created)
169
170
171
172
173
174
175
176
177
178
179
{
SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *data;
/* Allocate the window data */
data = (SDL_WindowData *) SDL_calloc(1, sizeof(*data));
if (!data) {
return SDL_OutOfMemory();
}
data->window = window;
data->hwnd = hwnd;
180
data->parent = parent;
181
data->hdc = GetDC(hwnd);
182
data->hinstance = (HINSTANCE) GetWindowLongPtr(hwnd, GWLP_HINSTANCE);
183
184
185
data->created = created;
data->mouse_button_flags = 0;
data->videodata = videodata;
186
data->initializing = SDL_TRUE;
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
212
213
214
215
216
217
218
219
window->driverdata = data;
/* Associate the data with the window */
if (!SetProp(hwnd, TEXT("SDL_WindowData"), data)) {
ReleaseDC(hwnd, data->hdc);
SDL_free(data);
return WIN_SetError("SetProp() failed");
}
/* Set up the window proc function */
#ifdef GWLP_WNDPROC
data->wndproc = (WNDPROC) GetWindowLongPtr(hwnd, GWLP_WNDPROC);
if (data->wndproc == WIN_WindowProc) {
data->wndproc = NULL;
} else {
SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) WIN_WindowProc);
}
#else
data->wndproc = (WNDPROC) GetWindowLong(hwnd, GWL_WNDPROC);
if (data->wndproc == WIN_WindowProc) {
data->wndproc = NULL;
} else {
SetWindowLong(hwnd, GWL_WNDPROC, (LONG_PTR) WIN_WindowProc);
}
#endif
/* Fill in the SDL window with the window data */
{
RECT rect;
if (GetClientRect(hwnd, &rect)) {
int w = rect.right;
int h = rect.bottom;
220
if ((window->windowed.w && window->windowed.w != w) || (window->windowed.h && window->windowed.h != h)) {
221
/* We tried to create a window larger than the desktop and Windows didn't allow it. Override! */
222
223
int x, y;
/* Figure out what the window area will be */
224
WIN_AdjustWindowRect(window, &x, &y, &w, &h, SDL_FALSE);
225
SetWindowPos(hwnd, HWND_NOTOPMOST, x, y, w, h, SWP_NOCOPYBITS | SWP_NOZORDER | SWP_NOACTIVATE);
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
} else {
window->w = w;
window->h = h;
}
}
}
{
POINT point;
point.x = 0;
point.y = 0;
if (ClientToScreen(hwnd, &point)) {
window->x = point.x;
window->y = point.y;
}
}
{
DWORD style = GetWindowLong(hwnd, GWL_STYLE);
if (style & WS_VISIBLE) {
window->flags |= SDL_WINDOW_SHOWN;
} else {
window->flags &= ~SDL_WINDOW_SHOWN;
}
248
if (style & WS_POPUP) {
249
window->flags |= SDL_WINDOW_BORDERLESS;
250
251
} else {
window->flags &= ~SDL_WINDOW_BORDERLESS;
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
}
if (style & WS_THICKFRAME) {
window->flags |= SDL_WINDOW_RESIZABLE;
} else {
window->flags &= ~SDL_WINDOW_RESIZABLE;
}
#ifdef WS_MAXIMIZE
if (style & WS_MAXIMIZE) {
window->flags |= SDL_WINDOW_MAXIMIZED;
} else
#endif
{
window->flags &= ~SDL_WINDOW_MAXIMIZED;
}
#ifdef WS_MINIMIZE
if (style & WS_MINIMIZE) {
window->flags |= SDL_WINDOW_MINIMIZED;
} else
#endif
{
window->flags &= ~SDL_WINDOW_MINIMIZED;
}
}
if (GetFocus() == hwnd) {
window->flags |= SDL_WINDOW_INPUT_FOCUS;
SDL_SetKeyboardFocus(data->window);
if (window->flags & SDL_WINDOW_INPUT_GRABBED) {
RECT rect;
GetClientRect(hwnd, &rect);
ClientToScreen(hwnd, (LPPOINT) & rect);
ClientToScreen(hwnd, (LPPOINT) & rect + 1);
ClipCursor(&rect);
}
}
/* Enable multi-touch */
if (videodata->RegisterTouchWindow) {
videodata->RegisterTouchWindow(hwnd, (TWF_FINETOUCH|TWF_WANTPALM));
}
293
data->initializing = SDL_FALSE;
294
295
296
297
298
/* All done! */
return 0;
}
299
300
301
302
303
int
WIN_CreateWindow(_THIS, SDL_Window * window)
{
304
HWND hwnd, parent = NULL;
305
306
307
308
DWORD style = STYLE_BASIC;
int x, y;
int w, h;
309
310
311
312
if (window->flags & SDL_WINDOW_SKIP_TASKBAR) {
parent = CreateWindow(SDL_Appname, TEXT(""), STYLE_BASIC, 0, 0, 32, 32, NULL, NULL, SDL_Instance, NULL);
}
313
314
315
style |= GetWindowStyle(window);
/* Figure out what the window area will be */
316
WIN_AdjustWindowRectWithStyle(window, style, FALSE, &x, &y, &w, &h, SDL_FALSE);
317
318
hwnd =
319
CreateWindow(SDL_Appname, TEXT(""), style, x, y, w, h, parent, NULL,
320
321
322
323
324
325
326
SDL_Instance, NULL);
if (!hwnd) {
return WIN_SetError("Couldn't create window");
}
WIN_PumpEvents(_this);
327
if (SetupWindowData(_this, window, hwnd, parent, SDL_TRUE) < 0) {
328
DestroyWindow(hwnd);
329
330
331
if (parent) {
DestroyWindow(parent);
}
332
333
334
return -1;
}
335
/* Inform Windows of the frame change so we can respond to WM_NCCALCSIZE */
336
SetWindowPos(hwnd, NULL, 0, 0, 0, 0, SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
337
338
339
340
if (window->flags & SDL_WINDOW_MINIMIZED) {
ShowWindow(hwnd, SW_SHOWMINNOACTIVE);
}
341
342
343
if (!(window->flags & SDL_WINDOW_OPENGL)) {
return 0;
344
345
}
346
/* The rest of this macro mess is for OpenGL or OpenGL ES windows */
347
#if SDL_VIDEO_OPENGL_ES2
348
349
350
351
352
353
if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES
#if SDL_VIDEO_OPENGL_WGL
&& (!_this->gl_data || WIN_GL_UseEGL(_this))
#endif /* SDL_VIDEO_OPENGL_WGL */
) {
#if SDL_VIDEO_OPENGL_EGL
354
355
356
357
if (WIN_GLES_SetupWindow(_this, window) < 0) {
WIN_DestroyWindow(_this, window);
return -1;
}
358
return 0;
359
#else
360
361
362
return SDL_SetError("Could not create GLES window surface (EGL support not configured)");
#endif /* SDL_VIDEO_OPENGL_EGL */
}
363
364
365
#endif /* SDL_VIDEO_OPENGL_ES2 */
#if SDL_VIDEO_OPENGL_WGL
366
367
368
if (WIN_GL_SetupWindow(_this, window) < 0) {
WIN_DestroyWindow(_this, window);
return -1;
369
}
370
371
#else
return SDL_SetError("Could not create GL window (WGL support not configured)");
372
373
374
375
376
377
378
379
380
381
382
#endif
return 0;
}
int
WIN_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)
{
HWND hwnd = (HWND) data;
LPTSTR title;
int titleLen;
383
SDL_bool isstack;
384
385
386
/* Query the title from the existing window */
titleLen = GetWindowTextLength(hwnd);
387
title = SDL_small_alloc(TCHAR, titleLen + 1, &isstack);
388
if (title) {
389
titleLen = GetWindowText(hwnd, title, titleLen + 1);
390
391
392
393
394
395
396
} else {
titleLen = 0;
}
if (titleLen > 0) {
window->title = WIN_StringToUTF8(title);
}
if (title) {
397
SDL_small_free(title, isstack);
398
399
}
400
if (SetupWindowData(_this, window, hwnd, GetParent(hwnd), SDL_FALSE) < 0) {
401
402
403
404
405
406
407
408
409
410
411
412
413
414
return -1;
}
#if SDL_VIDEO_OPENGL_WGL
{
const char *hint = SDL_GetHint(SDL_HINT_VIDEO_WINDOW_SHARE_PIXEL_FORMAT);
if (hint) {
/* This hint is a pointer (in string form) of the address of
the window to share a pixel format with
*/
SDL_Window *otherWindow = NULL;
SDL_sscanf(hint, "%p", (void**)&otherWindow);
/* Do some error checking on the pointer */
415
if (otherWindow != NULL && otherWindow->magic == &_this->window_magic) {
416
/* If the otherWindow has SDL_WINDOW_OPENGL set, set it for the new window as well */
417
if (otherWindow->flags & SDL_WINDOW_OPENGL) {
418
window->flags |= SDL_WINDOW_OPENGL;
419
if (!WIN_GL_SetPixelFormatFrom(_this, otherWindow, window)) {
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
return -1;
}
}
}
}
}
#endif
return 0;
}
void
WIN_SetWindowTitle(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
LPTSTR title = WIN_UTF8ToString(window->title);
SetWindowText(hwnd, title);
SDL_free(title);
}
void
WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
HICON hicon = NULL;
BYTE *icon_bmp;
445
int icon_len, mask_len, y;
446
SDL_RWops *dst;
447
SDL_bool isstack;
448
449
450
451
/* Create temporary buffer for ICONIMAGE structure */
mask_len = (icon->h * (icon->w + 7)/8);
icon_len = 40 + icon->h * icon->w * sizeof(Uint32) + mask_len;
452
icon_bmp = SDL_small_alloc(BYTE, icon_len, &isstack);
453
454
dst = SDL_RWFromMem(icon_bmp, icon_len);
if (!dst) {
455
SDL_small_free(icon_bmp, isstack);
456
457
458
459
460
461
462
463
464
465
return;
}
/* Write the BITMAPINFO header */
SDL_WriteLE32(dst, 40);
SDL_WriteLE32(dst, icon->w);
SDL_WriteLE32(dst, icon->h * 2);
SDL_WriteLE16(dst, 1);
SDL_WriteLE16(dst, 32);
SDL_WriteLE32(dst, BI_RGB);
466
SDL_WriteLE32(dst, icon->h * icon->w * sizeof(Uint32));
467
468
469
470
471
472
473
474
475
476
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
/* Write the pixels upside down into the bitmap buffer */
SDL_assert(icon->format->format == SDL_PIXELFORMAT_ARGB8888);
y = icon->h;
while (y--) {
Uint8 *src = (Uint8 *) icon->pixels + y * icon->pitch;
477
SDL_RWwrite(dst, src, icon->w * sizeof(Uint32), 1);
478
479
}
480
481
482
/* Write the mask */
SDL_memset(icon_bmp + icon_len - mask_len, 0xFF, mask_len);
483
484
485
hicon = CreateIconFromResource(icon_bmp, icon_len, TRUE, 0x00030000);
SDL_RWclose(dst);
486
SDL_small_free(icon_bmp, isstack);
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
/* Set the icon for the window */
SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM) hicon);
/* Set the icon in the task manager (should we do this?) */
SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM) hicon);
}
void
WIN_SetWindowPosition(_THIS, SDL_Window * window)
{
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOSIZE | SWP_NOACTIVATE);
}
void
WIN_SetWindowSize(_THIS, SDL_Window * window)
{
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOACTIVATE);
}
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
int
WIN_GetWindowBordersSize(_THIS, SDL_Window * window, int *top, int *left, int *bottom, int *right)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
RECT rcClient, rcWindow;
POINT ptDiff;
/* rcClient stores the size of the inner window, while rcWindow stores the outer size relative to the top-left
* screen position; so the top/left values of rcClient are always {0,0} and bottom/right are {height,width} */
GetClientRect(hwnd, &rcClient);
GetWindowRect(hwnd, &rcWindow);
/* convert the top/left values to make them relative to
* the window; they will end up being slightly negative */
ptDiff.y = rcWindow.top;
ptDiff.x = rcWindow.left;
ScreenToClient(hwnd, &ptDiff);
rcWindow.top = ptDiff.y;
rcWindow.left = ptDiff.x;
/* convert the bottom/right values to make them relative to the window,
* these will be slightly bigger than the inner width/height */
ptDiff.y = rcWindow.bottom;
ptDiff.x = rcWindow.right;
ScreenToClient(hwnd, &ptDiff);
rcWindow.bottom = ptDiff.y;
rcWindow.right = ptDiff.x;
/* Now that both the inner and outer rects use the same coordinate system we can substract them to get the border size.
* Keep in mind that the top/left coordinates of rcWindow are negative because the border lies slightly before {0,0},
* so switch them around because SDL2 wants them in positive. */
*top = rcClient.top - rcWindow.top;
*left = rcClient.left - rcWindow.left;
*bottom = rcWindow.bottom - rcClient.bottom;
*right = rcWindow.right - rcClient.right;
return 0;
}
549
550
551
552
void
WIN_ShowWindow(_THIS, SDL_Window * window)
{
553
554
555
556
557
558
559
560
561
562
563
DWORD style;
HWND hwnd;
int nCmdShow;
hwnd = ((SDL_WindowData *)window->driverdata)->hwnd;
nCmdShow = SW_SHOW;
style = GetWindowLong(hwnd, GWL_EXSTYLE);
if (style & WS_EX_NOACTIVATE) {
nCmdShow = SW_SHOWNOACTIVATE;
}
ShowWindow(hwnd, nCmdShow);
564
565
566
567
568
569
570
571
572
573
574
575
}
void
WIN_HideWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_HIDE);
}
void
WIN_RaiseWindow(_THIS, SDL_Window * window)
{
576
577
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
SetForegroundWindow(hwnd);
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
}
void
WIN_MaximizeWindow(_THIS, SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
HWND hwnd = data->hwnd;
data->expected_resize = SDL_TRUE;
ShowWindow(hwnd, SW_MAXIMIZE);
data->expected_resize = SDL_FALSE;
}
void
WIN_MinimizeWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_MINIMIZE);
}
void
WIN_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordered)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
HWND hwnd = data->hwnd;
602
DWORD style;
603
604
605
606
style = GetWindowLong(hwnd, GWL_STYLE);
style &= ~STYLE_MASK;
style |= GetWindowStyle(window);
607
608
data->in_border_change = SDL_TRUE;
609
SetWindowLong(hwnd, GWL_STYLE, style);
610
611
612
613
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_FRAMECHANGED | SWP_NOZORDER | SWP_NOACTIVATE);
data->in_border_change = SDL_FALSE;
}
614
615
616
617
618
void
WIN_SetWindowResizable(_THIS, SDL_Window * window, SDL_bool resizable)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
HWND hwnd = data->hwnd;
619
DWORD style;
620
621
622
623
style = GetWindowLong(hwnd, GWL_STYLE);
style &= ~STYLE_MASK;
style |= GetWindowStyle(window);
624
625
626
627
SetWindowLong(hwnd, GWL_STYLE, style);
}
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
void
WIN_RestoreWindow(_THIS, SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
HWND hwnd = data->hwnd;
data->expected_resize = SDL_TRUE;
ShowWindow(hwnd, SW_RESTORE);
data->expected_resize = SDL_FALSE;
}
void
WIN_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
HWND hwnd = data->hwnd;
SDL_Rect bounds;
DWORD style;
HWND top;
int x, y;
int w, h;
649
if (SDL_ShouldAllowTopmost() && ((window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS)) == (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS) || window->flags & SDL_WINDOW_ALWAYS_ON_TOP)) {
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
top = HWND_TOPMOST;
} else {
top = HWND_NOTOPMOST;
}
style = GetWindowLong(hwnd, GWL_STYLE);
style &= ~STYLE_MASK;
style |= GetWindowStyle(window);
WIN_GetDisplayBounds(_this, display, &bounds);
if (fullscreen) {
x = bounds.x;
y = bounds.y;
w = bounds.w;
h = bounds.h;
666
667
668
669
670
671
672
673
/* Unset the maximized flag. This fixes
https://bugzilla.libsdl.org/show_bug.cgi?id=3215
*/
if (style & WS_MAXIMIZE) {
data->windowed_mode_was_maximized = SDL_TRUE;
style &= ~WS_MAXIMIZE;
}
674
} else {
675
676
BOOL menu;
677
678
679
680
681
682
683
684
685
686
/* Restore window-maximization state, as applicable.
Special care is taken to *not* do this if and when we're
alt-tab'ing away (to some other window; as indicated by
in_window_deactivation), otherwise
https://bugzilla.libsdl.org/show_bug.cgi?id=3215 can reproduce!
*/
if (data->windowed_mode_was_maximized && !data->in_window_deactivation) {
style |= WS_MAXIMIZE;
data->windowed_mode_was_maximized = SDL_FALSE;
}
687
688
689
menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);
WIN_AdjustWindowRectWithStyle(window, style, menu, &x, &y, &w, &h, SDL_FALSE);
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
}
SetWindowLong(hwnd, GWL_STYLE, style);
data->expected_resize = SDL_TRUE;
SetWindowPos(hwnd, top, x, y, w, h, SWP_NOCOPYBITS | SWP_NOACTIVATE);
data->expected_resize = SDL_FALSE;
}
int
WIN_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp)
{
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
HDC hdc;
BOOL succeeded = FALSE;
hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);
if (hdc) {
succeeded = SetDeviceGammaRamp(hdc, (LPVOID)ramp);
if (!succeeded) {
WIN_SetError("SetDeviceGammaRamp()");
}
DeleteDC(hdc);
}
return succeeded ? 0 : -1;
}
int
WIN_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
{
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
HDC hdc;
BOOL succeeded = FALSE;
hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);
if (hdc) {
succeeded = GetDeviceGammaRamp(hdc, (LPVOID)ramp);
if (!succeeded) {
WIN_SetError("GetDeviceGammaRamp()");
}
DeleteDC(hdc);
}
return succeeded ? 0 : -1;
}
void
WIN_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
{
WIN_UpdateClipCursor(window);
if (window->flags & SDL_WINDOW_FULLSCREEN) {
UINT flags = SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOSIZE;
if (!(window->flags & SDL_WINDOW_SHOWN)) {
flags |= SWP_NOACTIVATE;
}
WIN_SetWindowPositionInternal(_this, window, flags);
}
}
void
WIN_DestroyWindow(_THIS, SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if (data) {
ReleaseDC(data->hwnd, data->hdc);
RemoveProp(data->hwnd, TEXT("SDL_WindowData"));
if (data->created) {
DestroyWindow(data->hwnd);
760
761
762
if (data->parent) {
DestroyWindow(data->parent);
}
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
} else {
/* Restore any original event handler... */
if (data->wndproc != NULL) {
#ifdef GWLP_WNDPROC
SetWindowLongPtr(data->hwnd, GWLP_WNDPROC,
(LONG_PTR) data->wndproc);
#else
SetWindowLong(data->hwnd, GWL_WNDPROC,
(LONG_PTR) data->wndproc);
#endif
}
}
SDL_free(data);
}
window->driverdata = NULL;
}
SDL_bool
WIN_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
{
const SDL_WindowData *data = (const SDL_WindowData *) window->driverdata;
if (info->version.major <= SDL_MAJOR_VERSION) {
785
786
int versionnum = SDL_VERSIONNUM(info->version.major, info->version.minor, info->version.patch);
787
788
info->subsystem = SDL_SYSWM_WINDOWS;
info->info.win.window = data->hwnd;
789
790
791
792
793
if (versionnum >= SDL_VERSIONNUM(2, 0, 4)) {
info->info.win.hdc = data->hdc;
}
794
795
796
797
if (versionnum >= SDL_VERSIONNUM(2, 0, 5)) {
info->info.win.hinstance = data->hinstance;
}
798
799
return SDL_TRUE;
} else {
800
SDL_SetError("Application not compiled with SDL %d.%d",
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
return SDL_FALSE;
}
}
/*
* Creates a HelperWindow used for DirectInput events.
*/
int
SDL_HelperWindowCreate(void)
{
HINSTANCE hInstance = GetModuleHandle(NULL);
WNDCLASS wce;
/* Make sure window isn't created twice. */
if (SDL_HelperWindow != NULL) {
return 0;
}
/* Create the class. */
SDL_zero(wce);
wce.lpfnWndProc = DefWindowProc;
wce.lpszClassName = (LPCWSTR) SDL_HelperWindowClassName;
wce.hInstance = hInstance;
/* Register the class. */
SDL_HelperWindowClass = RegisterClass(&wce);
if (SDL_HelperWindowClass == 0 && GetLastError() != ERROR_CLASS_ALREADY_EXISTS) {
return WIN_SetError("Unable to create Helper Window Class");
}
/* Create the window. */
SDL_HelperWindow = CreateWindowEx(0, SDL_HelperWindowClassName,
SDL_HelperWindowName,
WS_OVERLAPPED, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, HWND_MESSAGE, NULL,
hInstance, NULL);
if (SDL_HelperWindow == NULL) {
UnregisterClass(SDL_HelperWindowClassName, hInstance);
return WIN_SetError("Unable to create Helper Window");
}
return 0;
}
/*
* Destroys the HelperWindow previously created with SDL_HelperWindowCreate.
*/
void
SDL_HelperWindowDestroy(void)
{
HINSTANCE hInstance = GetModuleHandle(NULL);
/* Destroy the window. */
if (SDL_HelperWindow != NULL) {
if (DestroyWindow(SDL_HelperWindow) == 0) {
WIN_SetError("Unable to destroy Helper Window");
return;
}
SDL_HelperWindow = NULL;
}
/* Unregister the class. */
if (SDL_HelperWindowClass != 0) {
if ((UnregisterClass(SDL_HelperWindowClassName, hInstance)) == 0) {
WIN_SetError("Unable to destroy Helper Window Class");
return;
}
SDL_HelperWindowClass = 0;
}
}
void WIN_OnWindowEnter(_THIS, SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if (!data || !data->hwnd) {
/* The window wasn't fully initialized */
return;
}
885
886
887
if (window->flags & SDL_WINDOW_ALWAYS_ON_TOP) {
WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOSIZE | SWP_NOACTIVATE);
}
888
889
890
891
892
893
894
895
896
897
898
#ifdef WM_MOUSELEAVE
{
TRACKMOUSEEVENT trackMouseEvent;
trackMouseEvent.cbSize = sizeof(TRACKMOUSEEVENT);
trackMouseEvent.dwFlags = TME_LEAVE;
trackMouseEvent.hwndTrack = data->hwnd;
TrackMouseEvent(&trackMouseEvent);
}
899
900
901
902
903
904
905
906
#endif /* WM_MOUSELEAVE */
}
void
WIN_UpdateClipCursor(SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
SDL_Mouse *mouse = SDL_GetMouse();
907
RECT rect;
908
909
910
911
912
913
if (data->in_title_click || data->focus_click_pending) {
return;
}
if (data->skip_update_clipcursor) {
data->skip_update_clipcursor = SDL_FALSE;
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
return;
}
if ((mouse->relative_mode || (window->flags & SDL_WINDOW_INPUT_GRABBED)) &&
(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
if (mouse->relative_mode && !mouse->relative_mode_warp) {
LONG cx, cy;
GetWindowRect(data->hwnd, &rect);
cx = (rect.left + rect.right) / 2;
cy = (rect.top + rect.bottom) / 2;
/* Make an absurdly small clip rect */
rect.left = cx - 1;
rect.right = cx + 1;
rect.top = cy - 1;
rect.bottom = cy + 1;
932
933
934
if (ClipCursor(&rect)) {
data->cursor_clipped_rect = rect;
}
935
936
937
938
} else {
if (GetClientRect(data->hwnd, &rect) && !IsRectEmpty(&rect)) {
ClientToScreen(data->hwnd, (LPPOINT) & rect);
ClientToScreen(data->hwnd, (LPPOINT) & rect + 1);
939
940
941
if (ClipCursor(&rect)) {
data->cursor_clipped_rect = rect;
}
942
943
}
}
944
} else if (GetClipCursor(&rect) && SDL_memcmp(&rect, &data->cursor_clipped_rect, sizeof(rect)) == 0) {
945
ClipCursor(NULL);
946
SDL_zero(data->cursor_clipped_rect);
947
948
949
950
951
952
953
954
955
}
}
int
WIN_SetWindowHitTest(SDL_Window *window, SDL_bool enabled)
{
return 0; /* just succeed, the real work is done elsewhere. */
}
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
int
WIN_SetWindowOpacity(_THIS, SDL_Window * window, float opacity)
{
const SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
const HWND hwnd = data->hwnd;
const LONG style = GetWindowLong(hwnd, GWL_EXSTYLE);
SDL_assert(style != 0);
if (opacity == 1.0f) {
/* want it fully opaque, just mark it unlayered if necessary. */
if (style & WS_EX_LAYERED) {
if (SetWindowLong(hwnd, GWL_EXSTYLE, style & ~WS_EX_LAYERED) == 0) {
return WIN_SetError("SetWindowLong()");
}
}
} else {
const BYTE alpha = (BYTE) ((int) (opacity * 255.0f));
/* want it transparent, mark it layered if necessary. */
if ((style & WS_EX_LAYERED) == 0) {
if (SetWindowLong(hwnd, GWL_EXSTYLE, style | WS_EX_LAYERED) == 0) {
return WIN_SetError("SetWindowLong()");
}
}
if (SetLayeredWindowAttributes(hwnd, 0, alpha, LWA_ALPHA) == 0) {
return WIN_SetError("SetLayeredWindowAttributes()");
}
}
return 0;
}
989
990
991
992
993
994
995
void
WIN_AcceptDragAndDrop(SDL_Window * window, SDL_bool accept)
{
const SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
DragAcceptFiles(data->hwnd, accept ? TRUE : FALSE);
}
996
997
998
#endif /* SDL_VIDEO_DRIVER_WINDOWS */
/* vi: set ts=4 sw=4 expandtab: */