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comparison src/video/windib/SDL_dibvideo.c @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children 13ee9f4834ea
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1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <malloc.h>
31 #include <windows.h>
32
33 /* Not yet in the mingw32 cross-compile headers */
34 #ifndef CDS_FULLSCREEN
35 #define CDS_FULLSCREEN 4
36 #endif
37
38 #include "SDL.h"
39 #include "SDL_mutex.h"
40 #include "SDL_syswm.h"
41 #include "SDL_sysvideo.h"
42 #include "SDL_sysevents.h"
43 #include "SDL_events_c.h"
44 #include "SDL_pixels_c.h"
45 #include "SDL_dibvideo.h"
46 #include "SDL_syswm_c.h"
47 #include "SDL_sysmouse_c.h"
48 #include "SDL_dibevents_c.h"
49 #include "SDL_wingl_c.h"
50
51 #ifdef _WIN32_WCE
52 #define NO_GETDIBITS
53 #define NO_CHANGEDISPLAYSETTINGS
54 #define NO_GAMMA_SUPPORT
55 #endif
56
57 /* Initialization/Query functions */
58 static int DIB_VideoInit(_THIS, SDL_PixelFormat *vformat);
59 static SDL_Rect **DIB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
60 SDL_Surface *DIB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
61 static int DIB_SetColors(_THIS, int firstcolor, int ncolors,
62 SDL_Color *colors);
63 static void DIB_CheckGamma(_THIS);
64 static void DIB_SwapGamma(_THIS);
65 static void DIB_QuitGamma(_THIS);
66 #ifndef NO_GAMMA_SUPPORT
67 static int DIB_SetGammaRamp(_THIS, Uint16 *ramp);
68 static int DIB_GetGammaRamp(_THIS, Uint16 *ramp);
69 #endif
70 static void DIB_VideoQuit(_THIS);
71
72 /* Hardware surface functions */
73 static int DIB_AllocHWSurface(_THIS, SDL_Surface *surface);
74 static int DIB_LockHWSurface(_THIS, SDL_Surface *surface);
75 static void DIB_UnlockHWSurface(_THIS, SDL_Surface *surface);
76 static void DIB_FreeHWSurface(_THIS, SDL_Surface *surface);
77
78 /* Windows message handling functions */
79 static void DIB_RealizePalette(_THIS);
80 static void DIB_PaletteChanged(_THIS, HWND window);
81 static void DIB_WinPAINT(_THIS, HDC hdc);
82
83 /* helper fn */
84 static int DIB_SussScreenDepth();
85
86 /* DIB driver bootstrap functions */
87
88 static int DIB_Available(void)
89 {
90 return(1);
91 }
92
93 static void DIB_DeleteDevice(SDL_VideoDevice *device)
94 {
95 if ( device ) {
96 if ( device->hidden ) {
97 free(device->hidden);
98 }
99 if ( device->gl_data ) {
100 free(device->gl_data);
101 }
102 free(device);
103 }
104 }
105
106 static SDL_VideoDevice *DIB_CreateDevice(int devindex)
107 {
108 SDL_VideoDevice *device;
109
110 /* Initialize all variables that we clean on shutdown */
111 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
112 if ( device ) {
113 memset(device, 0, (sizeof *device));
114 device->hidden = (struct SDL_PrivateVideoData *)
115 malloc((sizeof *device->hidden));
116 device->gl_data = (struct SDL_PrivateGLData *)
117 malloc((sizeof *device->gl_data));
118 }
119 if ( (device == NULL) || (device->hidden == NULL) ||
120 (device->gl_data == NULL) ) {
121 SDL_OutOfMemory();
122 DIB_DeleteDevice(device);
123 return(NULL);
124 }
125 memset(device->hidden, 0, (sizeof *device->hidden));
126 memset(device->gl_data, 0, (sizeof *device->gl_data));
127
128 /* Set the function pointers */
129 device->VideoInit = DIB_VideoInit;
130 device->ListModes = DIB_ListModes;
131 device->SetVideoMode = DIB_SetVideoMode;
132 device->UpdateMouse = WIN_UpdateMouse;
133 device->SetColors = DIB_SetColors;
134 device->UpdateRects = NULL;
135 device->VideoQuit = DIB_VideoQuit;
136 device->AllocHWSurface = DIB_AllocHWSurface;
137 device->CheckHWBlit = NULL;
138 device->FillHWRect = NULL;
139 device->SetHWColorKey = NULL;
140 device->SetHWAlpha = NULL;
141 device->LockHWSurface = DIB_LockHWSurface;
142 device->UnlockHWSurface = DIB_UnlockHWSurface;
143 device->FlipHWSurface = NULL;
144 device->FreeHWSurface = DIB_FreeHWSurface;
145 #ifndef NO_GAMMA_SUPPORT
146 device->SetGammaRamp = DIB_SetGammaRamp;
147 device->GetGammaRamp = DIB_GetGammaRamp;
148 #endif
149 #ifdef HAVE_OPENGL
150 device->GL_LoadLibrary = WIN_GL_LoadLibrary;
151 device->GL_GetProcAddress = WIN_GL_GetProcAddress;
152 device->GL_GetAttribute = WIN_GL_GetAttribute;
153 device->GL_MakeCurrent = WIN_GL_MakeCurrent;
154 device->GL_SwapBuffers = WIN_GL_SwapBuffers;
155 #endif
156 device->SetCaption = WIN_SetWMCaption;
157 device->SetIcon = WIN_SetWMIcon;
158 device->IconifyWindow = WIN_IconifyWindow;
159 device->GrabInput = WIN_GrabInput;
160 device->GetWMInfo = WIN_GetWMInfo;
161 device->FreeWMCursor = WIN_FreeWMCursor;
162 device->CreateWMCursor = WIN_CreateWMCursor;
163 device->ShowWMCursor = WIN_ShowWMCursor;
164 device->WarpWMCursor = WIN_WarpWMCursor;
165 device->CheckMouseMode = WIN_CheckMouseMode;
166 device->InitOSKeymap = DIB_InitOSKeymap;
167 device->PumpEvents = DIB_PumpEvents;
168
169 /* Set up the windows message handling functions */
170 WIN_RealizePalette = DIB_RealizePalette;
171 WIN_PaletteChanged = DIB_PaletteChanged;
172 WIN_SwapGamma = DIB_SwapGamma;
173 WIN_WinPAINT = DIB_WinPAINT;
174 HandleMessage = DIB_HandleMessage;
175
176 device->free = DIB_DeleteDevice;
177
178 /* We're finally ready */
179 return device;
180 }
181
182 VideoBootStrap WINDIB_bootstrap = {
183 "windib", "Win95/98/NT/2000 GDI",
184 DIB_Available, DIB_CreateDevice
185 };
186
187 #ifndef NO_CHANGEDISPLAYSETTINGS
188
189 static int cmpmodes(const void *va, const void *vb)
190 {
191 SDL_Rect *a = *(SDL_Rect **)va;
192 SDL_Rect *b = *(SDL_Rect **)vb;
193 if(a->w > b->w)
194 return -1;
195 return b->h - a->h;
196 }
197
198 static int DIB_AddMode(_THIS, int bpp, int w, int h)
199 {
200 SDL_Rect *mode;
201 int i, index;
202 int next_mode;
203
204 /* Check to see if we already have this mode */
205 if ( bpp < 8 ) { /* Not supported */
206 return(0);
207 }
208 index = ((bpp+7)/8)-1;
209 for ( i=0; i<SDL_nummodes[index]; ++i ) {
210 mode = SDL_modelist[index][i];
211 if ( (mode->w == w) && (mode->h == h) ) {
212 return(0);
213 }
214 }
215
216 /* Set up the new video mode rectangle */
217 mode = (SDL_Rect *)malloc(sizeof *mode);
218 if ( mode == NULL ) {
219 SDL_OutOfMemory();
220 return(-1);
221 }
222 mode->x = 0;
223 mode->y = 0;
224 mode->w = w;
225 mode->h = h;
226
227 /* Allocate the new list of modes, and fill in the new mode */
228 next_mode = SDL_nummodes[index];
229 SDL_modelist[index] = (SDL_Rect **)
230 realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
231 if ( SDL_modelist[index] == NULL ) {
232 SDL_OutOfMemory();
233 SDL_nummodes[index] = 0;
234 free(mode);
235 return(-1);
236 }
237 SDL_modelist[index][next_mode] = mode;
238 SDL_modelist[index][next_mode+1] = NULL;
239 SDL_nummodes[index]++;
240
241 return(0);
242 }
243
244 #endif /* !NO_CHANGEDISPLAYSETTINGS */
245
246 static HPALETTE DIB_CreatePalette(int bpp)
247 {
248 /* RJR: March 28, 2000
249 moved palette creation here from "DIB_VideoInit" */
250
251 HPALETTE handle = NULL;
252
253 if ( bpp <= 8 )
254 {
255 LOGPALETTE *palette;
256 HDC hdc;
257 int ncolors;
258 int i;
259
260 ncolors = 1;
261 for ( i=0; i<bpp; ++i ) {
262 ncolors *= 2;
263 }
264 palette = (LOGPALETTE *)malloc(sizeof(*palette)+
265 ncolors*sizeof(PALETTEENTRY));
266 palette->palVersion = 0x300;
267 palette->palNumEntries = ncolors;
268 hdc = GetDC(SDL_Window);
269 GetSystemPaletteEntries(hdc, 0, ncolors, palette->palPalEntry);
270 ReleaseDC(SDL_Window, hdc);
271 handle = CreatePalette(palette);
272 free(palette);
273 }
274
275 return handle;
276 }
277
278 int DIB_VideoInit(_THIS, SDL_PixelFormat *vformat)
279 {
280 #ifndef NO_CHANGEDISPLAYSETTINGS
281 int i;
282 DEVMODE settings;
283 #endif
284
285 /* Create the window */
286 if ( DIB_CreateWindow(this) < 0 ) {
287 return(-1);
288 }
289 DX5_SoundFocus(SDL_Window);
290
291 /* Determine the screen depth */
292 vformat->BitsPerPixel = DIB_SussScreenDepth();
293 switch (vformat->BitsPerPixel) {
294 case 15:
295 vformat->Rmask = 0x00007c00;
296 vformat->Gmask = 0x000003e0;
297 vformat->Bmask = 0x0000001f;
298 vformat->BitsPerPixel = 16;
299 break;
300 case 16:
301 vformat->Rmask = 0x0000f800;
302 vformat->Gmask = 0x000007e0;
303 vformat->Bmask = 0x0000001f;
304 break;
305 case 24:
306 case 32:
307 /* GDI defined as 8-8-8 */
308 vformat->Rmask = 0x00ff0000;
309 vformat->Gmask = 0x0000ff00;
310 vformat->Bmask = 0x000000ff;
311 break;
312 default:
313 break;
314 }
315
316 /* See if gamma is supported on this screen */
317 DIB_CheckGamma(this);
318
319 #ifndef NO_CHANGEDISPLAYSETTINGS
320 /* Query for the list of available video modes */
321 for ( i=0; EnumDisplaySettings(NULL, i, &settings); ++i ) {
322 DIB_AddMode(this, settings.dmBitsPerPel,
323 settings.dmPelsWidth, settings.dmPelsHeight);
324 }
325 /* Sort the mode lists */
326 for ( i=0; i<NUM_MODELISTS; ++i ) {
327 if ( SDL_nummodes[i] > 0 ) {
328 qsort(SDL_modelist[i], SDL_nummodes[i], sizeof *SDL_modelist[i], cmpmodes);
329 }
330 }
331 #endif /* !NO_CHANGEDISPLAYSETTINGS */
332
333 /* Grab an identity palette if we are in a palettized mode */
334 if ( vformat->BitsPerPixel <= 8 ) {
335 /* RJR: March 28, 2000
336 moved palette creation to "DIB_CreatePalette" */
337 screen_pal = DIB_CreatePalette(vformat->BitsPerPixel);
338 }
339
340 /* Fill in some window manager capabilities */
341 this->info.wm_available = 1;
342
343 /* We're done! */
344 return(0);
345 }
346
347 /* We support any format at any dimension */
348 SDL_Rect **DIB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
349 {
350 #ifdef NO_CHANGEDISPLAYSETTINGS
351 return((SDL_Rect **)-1);
352 #else
353 if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
354 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
355 } else {
356 return((SDL_Rect **)-1);
357 }
358 #endif
359 }
360
361
362 /*
363 Helper fn to work out which screen depth windows is currently using.
364 15 bit mode is considered 555 format, 16 bit is 565.
365 returns 0 for unknown mode.
366 (Derived from code in sept 1999 Windows Developer Journal
367 http://www.wdj.com/code/archive.html)
368 */
369 static int DIB_SussScreenDepth()
370 {
371 #ifdef NO_GETDIBITS
372 int depth;
373 HDC hdc;
374
375 hdc = GetDC(SDL_Window);
376 depth = GetDeviceCaps(hdc, PLANES) * GetDeviceCaps(hdc, BITSPIXEL);
377 ReleaseDC(SDL_Window, hdc);
378 if ( depth == 16 ) {
379 depth = 15; /* GDI defined as RGB 555 */
380 }
381 return(depth);
382 #else
383 int dib_size;
384 LPBITMAPINFOHEADER dib_hdr;
385 HDC hdc;
386 HBITMAP hbm;
387
388 /* Allocate enough space for a DIB header plus palette (for
389 * 8-bit modes) or bitfields (for 16- and 32-bit modes)
390 */
391 dib_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof (RGBQUAD);
392 dib_hdr = (LPBITMAPINFOHEADER) malloc(dib_size);
393 memset(dib_hdr, 0, dib_size);
394 dib_hdr->biSize = sizeof(BITMAPINFOHEADER);
395
396 /* Get a device-dependent bitmap that's compatible with the
397 screen.
398 */
399 hdc = GetDC(NULL);
400 hbm = CreateCompatibleBitmap( hdc, 1, 1 );
401
402 /* Convert the DDB to a DIB. We need to call GetDIBits twice:
403 * the first call just fills in the BITMAPINFOHEADER; the
404 * second fills in the bitfields or palette.
405 */
406 GetDIBits(hdc, hbm, 0, 1, NULL, (LPBITMAPINFO) dib_hdr, DIB_RGB_COLORS);
407 GetDIBits(hdc, hbm, 0, 1, NULL, (LPBITMAPINFO) dib_hdr, DIB_RGB_COLORS);
408 DeleteObject(hbm);
409 ReleaseDC(NULL, hdc);
410
411 switch( dib_hdr->biBitCount )
412 {
413 case 8: return 8;
414 case 24: return 24;
415 case 32: return 32;
416 case 16:
417 if( dib_hdr->biCompression == BI_BITFIELDS ) {
418 /* check the red mask */
419 switch( ((DWORD*)((char*)dib_hdr + dib_hdr->biSize))[0] ) {
420 case 0xf800: return 16; /* 565 */
421 case 0x7c00: return 15; /* 555 */
422 }
423 }
424 }
425 return 0; /* poo. */
426 #endif /* NO_GETDIBITS */
427 }
428
429
430 /* Various screen update functions available */
431 static void DIB_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
432
433 SDL_Surface *DIB_SetVideoMode(_THIS, SDL_Surface *current,
434 int width, int height, int bpp, Uint32 flags)
435 {
436 SDL_Surface *video;
437 Uint32 prev_flags;
438 DWORD style;
439 const DWORD directstyle =
440 (WS_POPUP);
441 const DWORD windowstyle =
442 (WS_OVERLAPPED|WS_CAPTION|WS_SYSMENU|WS_MINIMIZEBOX);
443 const DWORD resizestyle =
444 (WS_THICKFRAME|WS_MAXIMIZEBOX);
445 int binfo_size;
446 BITMAPINFO *binfo;
447 HDC hdc;
448 RECT bounds;
449 int x, y;
450 BOOL was_visible;
451 Uint32 Rmask, Gmask, Bmask;
452
453 /* See whether or not we should center the window */
454 was_visible = IsWindowVisible(SDL_Window);
455
456 /* Clean up any GL context that may be hanging around */
457 if ( current->flags & SDL_OPENGL ) {
458 WIN_GL_ShutDown(this);
459 }
460
461 /* Recalculate the bitmasks if necessary */
462 if ( bpp == current->format->BitsPerPixel ) {
463 video = current;
464 } else {
465 switch (bpp) {
466 case 15:
467 case 16:
468 if ( DIB_SussScreenDepth() == 15 ) {
469 /* 5-5-5 */
470 Rmask = 0x00007c00;
471 Gmask = 0x000003e0;
472 Bmask = 0x0000001f;
473 } else {
474 /* 5-6-5 */
475 Rmask = 0x0000f800;
476 Gmask = 0x000007e0;
477 Bmask = 0x0000001f;
478 }
479 break;
480 case 24:
481 case 32:
482 /* GDI defined as 8-8-8 */
483 Rmask = 0x00ff0000;
484 Gmask = 0x0000ff00;
485 Bmask = 0x000000ff;
486 break;
487 default:
488 Rmask = 0x00000000;
489 Gmask = 0x00000000;
490 Bmask = 0x00000000;
491 break;
492 }
493 video = SDL_CreateRGBSurface(SDL_SWSURFACE,
494 0, 0, bpp, Rmask, Gmask, Bmask, 0);
495 if ( video == NULL ) {
496 SDL_OutOfMemory();
497 return(NULL);
498 }
499 }
500
501 /* Fill in part of the video surface */
502 prev_flags = video->flags;
503 video->flags = 0; /* Clear flags */
504 video->w = width;
505 video->h = height;
506 video->pitch = SDL_CalculatePitch(video);
507
508 #ifndef NO_CHANGEDISPLAYSETTINGS
509 /* Set fullscreen mode if appropriate */
510 if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
511 DEVMODE settings;
512
513 memset(&settings, 0, sizeof(DEVMODE));
514 settings.dmSize = sizeof(DEVMODE);
515 settings.dmBitsPerPel = video->format->BitsPerPixel;
516 settings.dmPelsWidth = width;
517 settings.dmPelsHeight = height;
518 settings.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL;
519 if ( ChangeDisplaySettings(&settings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL ) {
520 video->flags |= SDL_FULLSCREEN;
521 if ( screen_pal != NULL ) {
522 /* RJR: March 28, 2000
523 delete identity palette if switching from a palettized mode */
524 DeleteObject(screen_pal);
525 screen_pal = NULL;
526 }
527 if ( bpp <= 8 )
528 {
529 /* RJR: March 28, 2000
530 create identity palette switching to a palettized mode */
531 screen_pal = DIB_CreatePalette(bpp);
532 }
533 }
534 }
535 #endif /* !NO_CHANGEDISPLAYSETTINGS */
536
537 style = GetWindowLong(SDL_Window, GWL_STYLE);
538 style &= ~(resizestyle|WS_MAXIMIZE);
539 if ( (video->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
540 style &= ~windowstyle;
541 style |= directstyle;
542 } else {
543 #ifndef NO_CHANGEDISPLAYSETTINGS
544 if ( (prev_flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
545 ChangeDisplaySettings(NULL, 0);
546 }
547 #endif
548 if ( flags & SDL_NOFRAME ) {
549 style &= ~windowstyle;
550 style |= directstyle;
551 video->flags |= SDL_NOFRAME;
552 } else {
553 style &= ~directstyle;
554 style |= windowstyle;
555 if ( flags & SDL_RESIZABLE ) {
556 style |= resizestyle;
557 video->flags |= SDL_RESIZABLE;
558 }
559 }
560 if (IsZoomed(SDL_Window)) style |= WS_MAXIMIZE;
561 }
562 SetWindowLong(SDL_Window, GWL_STYLE, style);
563
564 /* Delete the old bitmap if necessary */
565 if ( screen_bmp != NULL ) {
566 DeleteObject(screen_bmp);
567 }
568 if ( ! (flags & SDL_OPENGL) ) {
569 BOOL is16bitmode = (video->format->BytesPerPixel == 2);
570
571 /* Suss out the bitmap info header */
572 binfo_size = sizeof(*binfo);
573 if( is16bitmode ) {
574 /* 16bit modes, palette area used for rgb bitmasks */
575 binfo_size += 3*sizeof(DWORD);
576 } else if ( video->format->palette ) {
577 binfo_size += video->format->palette->ncolors *
578 sizeof(RGBQUAD);
579 }
580 binfo = (BITMAPINFO *)malloc(binfo_size);
581 if ( ! binfo ) {
582 if ( video != current ) {
583 SDL_FreeSurface(video);
584 }
585 SDL_OutOfMemory();
586 return(NULL);
587 }
588
589 binfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
590 binfo->bmiHeader.biWidth = video->w;
591 binfo->bmiHeader.biHeight = -video->h; /* -ve for topdown bitmap */
592 binfo->bmiHeader.biPlanes = 1;
593 binfo->bmiHeader.biSizeImage = video->h * video->pitch;
594 binfo->bmiHeader.biXPelsPerMeter = 0;
595 binfo->bmiHeader.biYPelsPerMeter = 0;
596 binfo->bmiHeader.biClrUsed = 0;
597 binfo->bmiHeader.biClrImportant = 0;
598 binfo->bmiHeader.biBitCount = video->format->BitsPerPixel;
599
600 if ( is16bitmode ) {
601 /* BI_BITFIELDS tells CreateDIBSection about the rgb masks in the palette */
602 binfo->bmiHeader.biCompression = BI_BITFIELDS;
603 ((Uint32*)binfo->bmiColors)[0] = video->format->Rmask;
604 ((Uint32*)binfo->bmiColors)[1] = video->format->Gmask;
605 ((Uint32*)binfo->bmiColors)[2] = video->format->Bmask;
606 } else {
607 binfo->bmiHeader.biCompression = BI_RGB; /* BI_BITFIELDS for 565 vs 555 */
608 if ( video->format->palette ) {
609 memset(binfo->bmiColors, 0,
610 video->format->palette->ncolors*sizeof(RGBQUAD));
611 }
612 }
613
614 /* Create the offscreen bitmap buffer */
615 hdc = GetDC(SDL_Window);
616 screen_bmp = CreateDIBSection(hdc, binfo, DIB_RGB_COLORS,
617 (void **)(&video->pixels), NULL, 0);
618 ReleaseDC(SDL_Window, hdc);
619 free(binfo);
620 if ( screen_bmp == NULL ) {
621 if ( video != current ) {
622 SDL_FreeSurface(video);
623 }
624 SDL_SetError("Couldn't create DIB section");
625 return(NULL);
626 }
627 this->UpdateRects = DIB_NormalUpdate;
628
629 /* Set video surface flags */
630 if ( bpp <= 8 ) {
631 /* BitBlt() maps colors for us */
632 video->flags |= SDL_HWPALETTE;
633 }
634 }
635
636 /* Resize the window */
637 if ( SDL_windowid == NULL ) {
638 UINT swp_flags;
639
640 SDL_resizing = 1;
641 bounds.left = 0;
642 bounds.top = 0;
643 bounds.right = video->w;
644 bounds.bottom = video->h;
645 AdjustWindowRect(&bounds, GetWindowLong(SDL_Window, GWL_STYLE), FALSE);
646 width = bounds.right-bounds.left;
647 height = bounds.bottom-bounds.top;
648 x = (GetSystemMetrics(SM_CXSCREEN)-width)/2;
649 y = (GetSystemMetrics(SM_CYSCREEN)-height)/2;
650 if ( y < 0 ) { /* Cover up title bar for more client area */
651 y -= GetSystemMetrics(SM_CYCAPTION)/2;
652 }
653 swp_flags = (SWP_NOCOPYBITS | SWP_NOZORDER | SWP_SHOWWINDOW);
654 if ( was_visible && !(flags & SDL_FULLSCREEN) ) {
655 swp_flags |= SWP_NOMOVE;
656 }
657 SetWindowPos(SDL_Window, NULL, x, y, width, height, swp_flags);
658 SDL_resizing = 0;
659 SetForegroundWindow(SDL_Window);
660 }
661
662 /* Set up for OpenGL */
663 if ( flags & SDL_OPENGL ) {
664 if ( WIN_GL_SetupWindow(this) < 0 ) {
665 return(NULL);
666 }
667 video->flags |= SDL_OPENGL;
668 }
669 /* We're live! */
670 return(video);
671 }
672
673 /* We don't actually allow hardware surfaces in the DIB driver */
674 static int DIB_AllocHWSurface(_THIS, SDL_Surface *surface)
675 {
676 return(-1);
677 }
678 static void DIB_FreeHWSurface(_THIS, SDL_Surface *surface)
679 {
680 return;
681 }
682 static int DIB_LockHWSurface(_THIS, SDL_Surface *surface)
683 {
684 return(0);
685 }
686 static void DIB_UnlockHWSurface(_THIS, SDL_Surface *surface)
687 {
688 return;
689 }
690
691 static void DIB_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
692 {
693 HDC hdc, mdc;
694 int i;
695
696 hdc = GetDC(SDL_Window);
697 if ( screen_pal ) {
698 SelectPalette(hdc, screen_pal, FALSE);
699 }
700 mdc = CreateCompatibleDC(hdc);
701 SelectObject(mdc, screen_bmp);
702 for ( i=0; i<numrects; ++i ) {
703 BitBlt(hdc, rects[i].x, rects[i].y, rects[i].w, rects[i].h,
704 mdc, rects[i].x, rects[i].y, SRCCOPY);
705 }
706 DeleteDC(mdc);
707 ReleaseDC(SDL_Window, hdc);
708 }
709
710 int DIB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
711 {
712 RGBQUAD *pal;
713 int i;
714 HDC hdc, mdc;
715
716 /* Update the display palette */
717 hdc = GetDC(SDL_Window);
718 if ( screen_pal ) {
719 PALETTEENTRY *entries;
720
721 entries = (PALETTEENTRY *)alloca(ncolors*sizeof(PALETTEENTRY));
722 for ( i=0; i<ncolors; ++i ) {
723 entries[i].peRed = colors[i].r;
724 entries[i].peGreen = colors[i].g;
725 entries[i].peBlue = colors[i].b;
726 entries[i].peFlags = PC_NOCOLLAPSE;
727 }
728 SetPaletteEntries(screen_pal, firstcolor, ncolors, entries);
729 SelectPalette(hdc, screen_pal, FALSE);
730 RealizePalette(hdc);
731 }
732
733 /* Copy palette colors into DIB palette */
734 pal = (RGBQUAD *)alloca(ncolors*sizeof(RGBQUAD));
735 for ( i=0; i<ncolors; ++i ) {
736 pal[i].rgbRed = colors[i].r;
737 pal[i].rgbGreen = colors[i].g;
738 pal[i].rgbBlue = colors[i].b;
739 pal[i].rgbReserved = 0;
740 }
741
742 /* Set the DIB palette and update the display */
743 mdc = CreateCompatibleDC(hdc);
744 SelectObject(mdc, screen_bmp);
745 SetDIBColorTable(mdc, firstcolor, ncolors, pal);
746 BitBlt(hdc, 0, 0, this->screen->w, this->screen->h,
747 mdc, 0, 0, SRCCOPY);
748 DeleteDC(mdc);
749 ReleaseDC(SDL_Window, hdc);
750 return(1);
751 }
752
753 static void DIB_CheckGamma(_THIS)
754 {
755 #ifndef NO_GAMMA_SUPPORT
756 HDC hdc;
757 WORD ramp[3*256];
758
759 /* If we fail to get gamma, disable gamma control */
760 hdc = GetDC(SDL_Window);
761 if ( ! GetDeviceGammaRamp(hdc, ramp) ) {
762 this->GetGammaRamp = NULL;
763 this->SetGammaRamp = NULL;
764 }
765 ReleaseDC(SDL_Window, hdc);
766 #endif /* !NO_GAMMA_SUPPORT */
767 }
768 static void DIB_SwapGamma(_THIS)
769 {
770 #ifndef NO_GAMMA_SUPPORT
771 HDC hdc;
772
773 if ( gamma_saved ) {
774 hdc = GetDC(SDL_Window);
775 if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
776 /* About to leave active state, restore gamma */
777 SetDeviceGammaRamp(hdc, gamma_saved);
778 } else {
779 /* About to enter active state, set game gamma */
780 GetDeviceGammaRamp(hdc, gamma_saved);
781 SetDeviceGammaRamp(hdc, this->gamma);
782 }
783 ReleaseDC(SDL_Window, hdc);
784 }
785 #endif /* !NO_GAMMA_SUPPORT */
786 }
787 static void DIB_QuitGamma(_THIS)
788 {
789 #ifndef NO_GAMMA_SUPPORT
790 if ( gamma_saved ) {
791 /* Restore the original gamma if necessary */
792 if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
793 HDC hdc;
794
795 hdc = GetDC(SDL_Window);
796 SetDeviceGammaRamp(hdc, gamma_saved);
797 ReleaseDC(SDL_Window, hdc);
798 }
799
800 /* Free the saved gamma memory */
801 free(gamma_saved);
802 gamma_saved = 0;
803 }
804 #endif /* !NO_GAMMA_SUPPORT */
805 }
806
807 #ifndef NO_GAMMA_SUPPORT
808
809 static int DIB_SetGammaRamp(_THIS, Uint16 *ramp)
810 {
811 HDC hdc;
812 BOOL succeeded;
813
814 /* Set the ramp for the display */
815 if ( ! gamma_saved ) {
816 gamma_saved = (WORD *)malloc(3*256*sizeof(*gamma_saved));
817 if ( ! gamma_saved ) {
818 SDL_OutOfMemory();
819 return -1;
820 }
821 hdc = GetDC(SDL_Window);
822 GetDeviceGammaRamp(hdc, gamma_saved);
823 ReleaseDC(SDL_Window, hdc);
824 }
825 if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
826 hdc = GetDC(SDL_Window);
827 succeeded = SetDeviceGammaRamp(hdc, ramp);
828 ReleaseDC(SDL_Window, hdc);
829 } else {
830 succeeded = TRUE;
831 }
832 return succeeded ? 0 : -1;
833 }
834
835 static int DIB_GetGammaRamp(_THIS, Uint16 *ramp)
836 {
837 HDC hdc;
838 BOOL succeeded;
839
840 /* Get the ramp from the display */
841 hdc = GetDC(SDL_Window);
842 succeeded = GetDeviceGammaRamp(hdc, ramp);
843 ReleaseDC(SDL_Window, hdc);
844 return succeeded ? 0 : -1;
845 }
846
847 #endif /* !NO_GAMMA_SUPPORT */
848
849 void DIB_VideoQuit(_THIS)
850 {
851 /* Destroy the window and everything associated with it */
852 if ( SDL_Window ) {
853 /* Delete the screen bitmap (also frees screen->pixels) */
854 if ( this->screen ) {
855 #ifndef NO_CHANGEDISPLAYSETTINGS
856 if ( this->screen->flags & SDL_FULLSCREEN ) {
857 ChangeDisplaySettings(NULL, 0);
858 }
859 #endif
860 if ( this->screen->flags & SDL_OPENGL ) {
861 WIN_GL_ShutDown(this);
862 }
863 this->screen->pixels = NULL;
864 }
865 if ( screen_bmp ) {
866 DeleteObject(screen_bmp);
867 screen_bmp = NULL;
868 }
869 if ( screen_icn ) {
870 DestroyIcon(screen_icn);
871 screen_icn = NULL;
872 }
873 DIB_QuitGamma(this);
874 DIB_DestroyWindow(this);
875
876 SDL_Window = NULL;
877 }
878 }
879
880 /* Exported for the windows message loop only */
881 static void DIB_FocusPalette(_THIS, int foreground)
882 {
883 if ( screen_pal != NULL ) {
884 HDC hdc;
885
886 hdc = GetDC(SDL_Window);
887 SelectPalette(hdc, screen_pal, FALSE);
888 if ( RealizePalette(hdc) )
889 InvalidateRect(SDL_Window, NULL, FALSE);
890 ReleaseDC(SDL_Window, hdc);
891 }
892 }
893 static void DIB_RealizePalette(_THIS)
894 {
895 DIB_FocusPalette(this, 1);
896 }
897 static void DIB_PaletteChanged(_THIS, HWND window)
898 {
899 if ( window != SDL_Window ) {
900 DIB_FocusPalette(this, 0);
901 }
902 }
903
904 /* Exported for the windows message loop only */
905 static void DIB_WinPAINT(_THIS, HDC hdc)
906 {
907 HDC mdc;
908
909 if ( screen_pal ) {
910 SelectPalette(hdc, screen_pal, FALSE);
911 }
912 mdc = CreateCompatibleDC(hdc);
913 SelectObject(mdc, screen_bmp);
914 BitBlt(hdc, 0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h,
915 mdc, 0, 0, SRCCOPY);
916 DeleteDC(mdc);
917 }
918
919 /* Stub in case DirectX isn't available */
920 #ifndef ENABLE_DIRECTX
921 void DX5_SoundFocus(HWND hwnd)
922 {
923 return;
924 }
925 #endif