1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #define WIN32_LEAN_AND_MEAN
25 #include <windows.h>
26
27 #include "SDL_version.h"
28 #include "SDL_video.h"
29 #include "SDL_loadso.h"
30 #include "SDL_syswm.h"
31 #include "../SDL_pixels_c.h"
32 #include "../SDL_cursor_c.h"
33 #include "SDL_syswm_c.h"
34 #include "SDL_wingl_c.h"
35
36
37 #ifdef _WIN32_WCE
38 #define DISABLE_ICON_SUPPORT
39 #endif
40
41 /* The screen icon -- needs to be freed on SDL_VideoQuit() */
42 HICON screen_icn = NULL;
43
44 /* Win32 icon mask semantics are different from those of SDL:
45 SDL applies the mask to the icon and copies result to desktop.
46 Win32 applies the mask to the desktop and XORs the icon on.
47 This means that the SDL mask needs to be applied to the icon and
48 then inverted and passed to Win32.
49 */
WIN_SetWMIcon(_THIS,SDL_Surface * icon,Uint8 * mask)50 void WIN_SetWMIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
51 {
52 #ifdef DISABLE_ICON_SUPPORT
53 return;
54 #else
55 SDL_Palette *pal_256;
56 SDL_Surface *icon_256;
57 Uint8 *pdata, *pwin32;
58 Uint8 *mdata, *mwin32, m = 0;
59 int icon_len;
60 int icon_plen;
61 int icon_mlen;
62 int icon_pitch;
63 int mask_pitch;
64 SDL_Rect bounds;
65 int i, skip;
66 int row, col;
67 struct /* quasi-BMP format */ Win32Icon {
68 Uint32 biSize;
69 Sint32 biWidth;
70 Sint32 biHeight;
71 Uint16 biPlanes;
72 Uint16 biBitCount;
73 Uint32 biCompression;
74 Uint32 biSizeImage;
75 Sint32 biXPelsPerMeter;
76 Sint32 biYPelsPerMeter;
77 Uint32 biClrUsed;
78 Uint32 biClrImportant;
79 struct /* RGBQUAD -- note it's BGR ordered */ {
80 Uint8 rgbBlue;
81 Uint8 rgbGreen;
82 Uint8 rgbRed;
83 Uint8 rgbReserved;
84 } biColors[256];
85 /* Pixels:
86 Uint8 pixels[]
87 */
88 /* Mask:
89 Uint8 mask[]
90 */
91 } *icon_win32;
92
93 /* Allocate the win32 bmp icon and set everything to zero */
94 icon_pitch = ((icon->w+3)&~3);
95 mask_pitch = ((icon->w+7)/8);
96 icon_plen = icon->h*icon_pitch;
97 icon_mlen = icon->h*mask_pitch;
98 icon_len = sizeof(*icon_win32)+icon_plen+icon_mlen;
99 icon_win32 = (struct Win32Icon *)SDL_stack_alloc(Uint8, icon_len);
100 if ( icon_win32 == NULL ) {
101 return;
102 }
103 SDL_memset(icon_win32, 0, icon_len);
104
105 /* Set the basic BMP parameters */
106 icon_win32->biSize = sizeof(*icon_win32)-sizeof(icon_win32->biColors);
107 icon_win32->biWidth = icon->w;
108 icon_win32->biHeight = icon->h*2;
109 icon_win32->biPlanes = 1;
110 icon_win32->biBitCount = 8;
111 icon_win32->biSizeImage = icon_plen+icon_mlen;
112
113 /* Allocate a standard 256 color icon surface */
114 icon_256 = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
115 icon_win32->biBitCount, 0, 0, 0, 0);
116 if ( icon_256 == NULL ) {
117 SDL_stack_free(icon_win32);
118 return;
119 }
120 pal_256 = icon_256->format->palette;
121 if (icon->format->palette &&
122 (icon->format->BitsPerPixel == icon_256->format->BitsPerPixel)){
123 Uint8 black;
124 SDL_memcpy(pal_256->colors, icon->format->palette->colors,
125 pal_256->ncolors*sizeof(SDL_Color));
126 /* Make sure that 0 is black! */
127 black = SDL_FindColor(pal_256, 0x00, 0x00, 0x00);
128 pal_256->colors[black] = pal_256->colors[0];
129 pal_256->colors[0].r = 0x00;
130 pal_256->colors[0].g = 0x00;
131 pal_256->colors[0].b = 0x00;
132 } else {
133 SDL_DitherColors(pal_256->colors,
134 icon_256->format->BitsPerPixel);
135 }
136
137 /* Now copy color data to the icon BMP */
138 for ( i=0; i<(1<<icon_win32->biBitCount); ++i ) {
139 icon_win32->biColors[i].rgbRed = pal_256->colors[i].r;
140 icon_win32->biColors[i].rgbGreen = pal_256->colors[i].g;
141 icon_win32->biColors[i].rgbBlue = pal_256->colors[i].b;
142 }
143
144 /* Convert icon to a standard surface format. This may not always
145 be necessary, as Windows supports a variety of BMP formats, but
146 it greatly simplifies our code.
147 */
148 bounds.x = 0;
149 bounds.y = 0;
150 bounds.w = icon->w;
151 bounds.h = icon->h;
152 if ( SDL_LowerBlit(icon, &bounds, icon_256, &bounds) < 0 ) {
153 SDL_stack_free(icon_win32);
154 SDL_FreeSurface(icon_256);
155 return;
156 }
157
158 /* Copy pixels upside-down to icon BMP, masked with the icon mask */
159 if ( SDL_MUSTLOCK(icon_256) || (icon_256->pitch != icon_pitch) ) {
160 SDL_stack_free(icon_win32);
161 SDL_FreeSurface(icon_256);
162 SDL_SetError("Warning: Unexpected icon_256 characteristics");
163 return;
164 }
165 pdata = (Uint8 *)icon_256->pixels;
166 mdata = mask;
167 pwin32 = (Uint8 *)icon_win32+sizeof(*icon_win32)+icon_plen-icon_pitch;
168 skip = icon_pitch - icon->w;
169 for ( row=0; row<icon->h; ++row ) {
170 for ( col=0; col<icon->w; ++col ) {
171 if ( (col%8) == 0 ) {
172 m = *mdata++;
173 }
174 if ( (m&0x80) != 0x00 ) {
175 *pwin32 = *pdata;
176 }
177 m <<= 1;
178 ++pdata;
179 ++pwin32;
180 }
181 pdata += skip;
182 pwin32 += skip;
183 pwin32 -= 2*icon_pitch;
184 }
185 SDL_FreeSurface(icon_256);
186
187 /* Copy mask inverted and upside-down to icon BMP */
188 mdata = mask;
189 mwin32 = (Uint8 *)icon_win32
190 +sizeof(*icon_win32)+icon_plen+icon_mlen-mask_pitch;
191 for ( row=0; row<icon->h; ++row ) {
192 for ( col=0; col<mask_pitch; ++col ) {
193 *mwin32++ = ~*mdata++;
194 }
195 mwin32 -= 2*mask_pitch;
196 }
197
198 /* Finally, create the icon handle and set the window icon */
199 screen_icn = CreateIconFromResourceEx((Uint8 *)icon_win32, icon_len,
200 TRUE, 0x00030000, icon->w, icon->h, LR_DEFAULTCOLOR);
201 if ( screen_icn == NULL ) {
202 SDL_SetError("Couldn't create Win32 icon handle");
203 } else {
204 SetClassLongPtr(SDL_Window, GCLP_HICON, (LONG_PTR)screen_icn);
205 }
206 SDL_stack_free(icon_win32);
207 #endif /* DISABLE_ICON_SUPPORT */
208 }
209
210 typedef BOOL (WINAPI *PtrSetWindowTextW)(HWND hWnd, LPCWSTR lpString);
211
WIN_SetWMCaption(_THIS,const char * title,const char * icon)212 void WIN_SetWMCaption(_THIS, const char *title, const char *icon)
213 {
214 #ifdef _WIN32_WCE
215 /* WinCE uses the UNICODE version */
216 LPWSTR lpszW = SDL_iconv_utf8_ucs2((char *)title);
217 SetWindowText(SDL_Window, lpszW);
218 SDL_free(lpszW);
219 #else
220 /*
221 * Try loading SetWindowTextW from kernel32.dll first, and if it exists,
222 * pass the UCS-2 string to it. If it doesn't, use
223 * WideCharToMultiByte(CP_ACP) and hope that the codepage can support the
224 * string data in question. This lets us keep binary compatibility with
225 * Win95/98/ME but still use saner Unicode on NT-based Windows.
226 */
227 static int tried_loading = 0;
228 static PtrSetWindowTextW swtw = NULL;
229 Uint16 *lpsz = SDL_iconv_utf8_ucs2(title);
230 if (!tried_loading) {
231 HMODULE dll = LoadLibrary("user32.dll");
232 if (dll != NULL) {
233 swtw = (PtrSetWindowTextW) GetProcAddress(dll, "SetWindowTextW");
234 if (swtw == NULL) {
235 FreeLibrary(dll);
236 }
237 }
238 tried_loading = 1;
239 }
240
241 if (swtw != NULL) {
242 swtw(SDL_Window, lpsz);
243 } else {
244 size_t len = WideCharToMultiByte(CP_ACP, 0, lpsz, -1, NULL, 0, NULL, NULL);
245 char *cvt = SDL_malloc(len + 1);
246 WideCharToMultiByte(CP_ACP, 0, lpsz, -1, cvt, len, NULL, NULL);
247 SetWindowText(SDL_Window, cvt);
248 SDL_free(cvt);
249 }
250 SDL_free(lpsz);
251 #endif
252 }
253
WIN_IconifyWindow(_THIS)254 int WIN_IconifyWindow(_THIS)
255 {
256 ShowWindow(SDL_Window, SW_MINIMIZE);
257 return(1);
258 }
259
WIN_GrabInput(_THIS,SDL_GrabMode mode)260 SDL_GrabMode WIN_GrabInput(_THIS, SDL_GrabMode mode)
261 {
262 if ( mode == SDL_GRAB_OFF ) {
263 ClipCursor(NULL);
264 if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
265 /* RJR: March 28, 2000
266 must be leaving relative mode, move mouse from
267 center of window to where it belongs ... */
268 POINT pt;
269 int x, y;
270 SDL_GetMouseState(&x,&y);
271 pt.x = x;
272 pt.y = y;
273 ClientToScreen(SDL_Window, &pt);
274 SetCursorPos(pt.x,pt.y);
275 }
276 #ifdef _WIN32_WCE
277 AllKeys(0);
278 #endif
279 } else {
280 ClipCursor(&SDL_bounds);
281 if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
282 /* RJR: March 28, 2000
283 must be entering relative mode, get ready by
284 moving mouse to center of window ... */
285 POINT pt;
286 pt.x = (SDL_VideoSurface->w/2);
287 pt.y = (SDL_VideoSurface->h/2);
288 ClientToScreen(SDL_Window, &pt);
289 SetCursorPos(pt.x, pt.y);
290 }
291 #ifdef _WIN32_WCE
292 AllKeys(1);
293 #endif
294 }
295 return(mode);
296 }
297
298 /* If 'info' is the right version, this function fills it and returns 1.
299 Otherwise, in case of a version mismatch, it returns -1.
300 */
WIN_GetWMInfo(_THIS,SDL_SysWMinfo * info)301 int WIN_GetWMInfo(_THIS, SDL_SysWMinfo *info)
302 {
303 if ( info->version.major <= SDL_MAJOR_VERSION ) {
304 info->window = SDL_Window;
305 if ( SDL_VERSIONNUM(info->version.major,
306 info->version.minor,
307 info->version.patch) >=
308 SDL_VERSIONNUM(1, 2, 5) ) {
309 #if SDL_VIDEO_OPENGL
310 info->hglrc = GL_hrc;
311 #else
312 info->hglrc = NULL;
313 #endif
314 }
315 return(1);
316 } else {
317 SDL_SetError("Application not compiled with SDL %d.%d\n",
318 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
319 return(-1);
320 }
321 }
322