Commit | Line | Data |
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e9e23e23 | 1 | /* Functions taken directly from X sources for use with the Microsoft W32 API. |
68c45bf0 | 2 | Copyright (C) 1989, 1992, 1993, 1994, 1995, 1999 Free Software Foundation. |
ee78dc32 GV |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
ee78dc32 | 20 | |
ee78dc32 | 21 | #include <config.h> |
68c45bf0 | 22 | #include <signal.h> |
ee78dc32 GV |
23 | #include <stdio.h> |
24 | #include "lisp.h" | |
97aab3a2 | 25 | #include "frame.h" |
bd6bb544 GV |
26 | #include "charset.h" |
27 | #include "fontset.h" | |
ee78dc32 GV |
28 | #include "blockinput.h" |
29 | #include "w32term.h" | |
30 | #include "windowsx.h" | |
31 | ||
32 | #define myalloc(cb) GlobalAllocPtr (GPTR, cb) | |
33 | #define myfree(lp) GlobalFreePtr (lp) | |
34 | ||
dd118a07 | 35 | CRITICAL_SECTION critsect; |
ee78dc32 | 36 | extern HANDLE keyboard_handle; |
97aab3a2 | 37 | HANDLE input_available = NULL; |
1ce3dc2b | 38 | HANDLE interrupt_handle = NULL; |
ee78dc32 GV |
39 | |
40 | void | |
41 | init_crit () | |
42 | { | |
dd118a07 | 43 | InitializeCriticalSection (&critsect); |
ee78dc32 | 44 | |
97aab3a2 GV |
45 | /* For safety, input_available should only be reset by get_next_msg |
46 | when the input queue is empty, so make it a manual reset event. */ | |
47 | keyboard_handle = input_available = CreateEvent (NULL, TRUE, FALSE, NULL); | |
1ce3dc2b RS |
48 | |
49 | /* interrupt_handle is signalled when quit (C-g) is detected, so that | |
50 | blocking system calls can be interrupted. We make it a manual | |
51 | reset event, so that if we should ever have multiple threads | |
52 | performing system calls, they will all be interrupted (I'm guessing | |
53 | that would the right response). Note that we use PulseEvent to | |
54 | signal this event, so that it never remains signalled. */ | |
55 | interrupt_handle = CreateEvent (NULL, TRUE, FALSE, NULL); | |
ee78dc32 GV |
56 | } |
57 | ||
dd118a07 | 58 | void |
97aab3a2 | 59 | delete_crit () |
ee78dc32 | 60 | { |
97aab3a2 GV |
61 | DeleteCriticalSection (&critsect); |
62 | ||
63 | if (input_available) | |
64 | { | |
65 | CloseHandle (input_available); | |
66 | input_available = NULL; | |
67 | } | |
1ce3dc2b RS |
68 | if (interrupt_handle) |
69 | { | |
70 | CloseHandle (interrupt_handle); | |
71 | interrupt_handle = NULL; | |
72 | } | |
73 | } | |
74 | ||
75 | void | |
76 | signal_quit () | |
77 | { | |
78 | /* Make sure this event never remains signalled; if the main thread | |
79 | isn't in a blocking call, then this should do nothing. */ | |
80 | PulseEvent (interrupt_handle); | |
d484dc55 GV |
81 | } |
82 | ||
97aab3a2 GV |
83 | void |
84 | select_palette (FRAME_PTR f, HDC hdc) | |
d484dc55 | 85 | { |
fbd6baed GV |
86 | if (!NILP (Vw32_enable_palette)) |
87 | f->output_data.w32->old_palette = | |
88 | SelectPalette (hdc, one_w32_display_info.palette, FALSE); | |
97aab3a2 | 89 | else |
fbd6baed | 90 | f->output_data.w32->old_palette = NULL; |
97aab3a2 GV |
91 | |
92 | if (RealizePalette (hdc)) | |
93 | { | |
94 | Lisp_Object frame, framelist; | |
95 | FOR_EACH_FRAME (framelist, frame) | |
dd118a07 | 96 | { |
97aab3a2 | 97 | SET_FRAME_GARBAGED (XFRAME (frame)); |
dd118a07 | 98 | } |
97aab3a2 GV |
99 | } |
100 | } | |
101 | ||
102 | void | |
103 | deselect_palette (FRAME_PTR f, HDC hdc) | |
104 | { | |
fbd6baed GV |
105 | if (f->output_data.w32->old_palette) |
106 | SelectPalette (hdc, f->output_data.w32->old_palette, FALSE); | |
97aab3a2 GV |
107 | } |
108 | ||
109 | /* Get a DC for frame and select palette for drawing; force an update of | |
110 | all frames if palette's mapping changes. */ | |
111 | HDC | |
112 | get_frame_dc (FRAME_PTR f) | |
113 | { | |
114 | HDC hdc; | |
115 | ||
116 | enter_crit (); | |
117 | ||
fbd6baed | 118 | hdc = GetDC (f->output_data.w32->window_desc); |
97aab3a2 GV |
119 | select_palette (f, hdc); |
120 | ||
121 | return hdc; | |
122 | } | |
123 | ||
124 | int | |
125 | release_frame_dc (FRAME_PTR f, HDC hdc) | |
126 | { | |
127 | int ret; | |
128 | ||
129 | deselect_palette (f, hdc); | |
fbd6baed | 130 | ret = ReleaseDC (f->output_data.w32->window_desc, hdc); |
97aab3a2 GV |
131 | |
132 | leave_crit (); | |
133 | ||
134 | return ret; | |
ee78dc32 GV |
135 | } |
136 | ||
137 | typedef struct int_msg | |
138 | { | |
fbd6baed | 139 | W32Msg w32msg; |
ee78dc32 GV |
140 | struct int_msg *lpNext; |
141 | } int_msg; | |
142 | ||
143 | int_msg *lpHead = NULL; | |
144 | int_msg *lpTail = NULL; | |
145 | int nQueue = 0; | |
146 | ||
147 | BOOL | |
148 | get_next_msg (lpmsg, bWait) | |
fbd6baed | 149 | W32Msg * lpmsg; |
ee78dc32 GV |
150 | BOOL bWait; |
151 | { | |
152 | BOOL bRet = FALSE; | |
153 | ||
dd118a07 | 154 | enter_crit (); |
ee78dc32 GV |
155 | |
156 | /* The while loop takes care of multiple sets */ | |
157 | ||
158 | while (!nQueue && bWait) | |
159 | { | |
dd118a07 | 160 | leave_crit (); |
97aab3a2 | 161 | WaitForSingleObject (input_available, INFINITE); |
dd118a07 | 162 | enter_crit (); |
ee78dc32 GV |
163 | } |
164 | ||
165 | if (nQueue) | |
166 | { | |
fbd6baed | 167 | bcopy (&(lpHead->w32msg), lpmsg, sizeof (W32Msg)); |
ee78dc32 GV |
168 | |
169 | { | |
170 | int_msg * lpCur = lpHead; | |
171 | ||
172 | lpHead = lpHead->lpNext; | |
173 | ||
174 | myfree (lpCur); | |
175 | } | |
176 | ||
177 | nQueue--; | |
178 | ||
179 | bRet = TRUE; | |
180 | } | |
97aab3a2 GV |
181 | |
182 | if (nQueue == 0) | |
183 | ResetEvent (input_available); | |
ee78dc32 | 184 | |
dd118a07 | 185 | leave_crit (); |
ee78dc32 GV |
186 | |
187 | return (bRet); | |
188 | } | |
189 | ||
190 | BOOL | |
191 | post_msg (lpmsg) | |
fbd6baed | 192 | W32Msg * lpmsg; |
ee78dc32 GV |
193 | { |
194 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
195 | ||
97aab3a2 GV |
196 | if (!lpNew) |
197 | return (FALSE); | |
ee78dc32 | 198 | |
fbd6baed | 199 | bcopy (lpmsg, &(lpNew->w32msg), sizeof (W32Msg)); |
ee78dc32 GV |
200 | lpNew->lpNext = NULL; |
201 | ||
dd118a07 | 202 | enter_crit (); |
ee78dc32 GV |
203 | |
204 | if (nQueue++) | |
dd118a07 GV |
205 | { |
206 | lpTail->lpNext = lpNew; | |
207 | } | |
ee78dc32 | 208 | else |
dd118a07 GV |
209 | { |
210 | lpHead = lpNew; | |
dd118a07 | 211 | } |
ee78dc32 GV |
212 | |
213 | lpTail = lpNew; | |
97aab3a2 | 214 | SetEvent (input_available); |
ee78dc32 | 215 | |
dd118a07 | 216 | leave_crit (); |
ee78dc32 GV |
217 | |
218 | return (TRUE); | |
219 | } | |
220 | ||
7c69181b | 221 | BOOL |
fbd6baed | 222 | prepend_msg (W32Msg *lpmsg) |
7c69181b GV |
223 | { |
224 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
225 | ||
226 | if (!lpNew) | |
227 | return (FALSE); | |
228 | ||
fbd6baed | 229 | bcopy (lpmsg, &(lpNew->w32msg), sizeof (W32Msg)); |
7c69181b GV |
230 | |
231 | enter_crit (); | |
232 | ||
233 | nQueue++; | |
234 | lpNew->lpNext = lpHead; | |
235 | lpHead = lpNew; | |
236 | ||
237 | leave_crit (); | |
238 | ||
239 | return (TRUE); | |
240 | } | |
241 | ||
716490f0 AI |
242 | /* Process all messages in the current thread's queue. */ |
243 | void | |
244 | drain_message_queue () | |
245 | { | |
246 | MSG msg; | |
247 | while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) | |
248 | { | |
249 | TranslateMessage (&msg); | |
250 | DispatchMessage (&msg); | |
251 | } | |
252 | } | |
253 | ||
254 | ||
ee78dc32 GV |
255 | /* |
256 | * XParseGeometry parses strings of the form | |
257 | * "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where | |
258 | * width, height, xoffset, and yoffset are unsigned integers. | |
259 | * Example: "=80x24+300-49" | |
260 | * The equal sign is optional. | |
261 | * It returns a bitmask that indicates which of the four values | |
262 | * were actually found in the string. For each value found, | |
263 | * the corresponding argument is updated; for each value | |
264 | * not found, the corresponding argument is left unchanged. | |
265 | */ | |
266 | ||
267 | static int | |
268 | read_integer (string, NextString) | |
269 | register char *string; | |
270 | char **NextString; | |
271 | { | |
272 | register int Result = 0; | |
273 | int Sign = 1; | |
274 | ||
275 | if (*string == '+') | |
276 | string++; | |
277 | else if (*string == '-') | |
278 | { | |
279 | string++; | |
280 | Sign = -1; | |
281 | } | |
282 | for (; (*string >= '0') && (*string <= '9'); string++) | |
283 | { | |
284 | Result = (Result * 10) + (*string - '0'); | |
285 | } | |
286 | *NextString = string; | |
287 | if (Sign >= 0) | |
288 | return (Result); | |
289 | else | |
290 | return (-Result); | |
291 | } | |
292 | ||
293 | int | |
294 | XParseGeometry (string, x, y, width, height) | |
295 | char *string; | |
296 | int *x, *y; | |
297 | unsigned int *width, *height; /* RETURN */ | |
298 | { | |
299 | int mask = NoValue; | |
300 | register char *strind; | |
301 | unsigned int tempWidth, tempHeight; | |
302 | int tempX, tempY; | |
303 | char *nextCharacter; | |
304 | ||
305 | if ((string == NULL) || (*string == '\0')) return (mask); | |
306 | if (*string == '=') | |
307 | string++; /* ignore possible '=' at beg of geometry spec */ | |
308 | ||
309 | strind = (char *)string; | |
310 | if (*strind != '+' && *strind != '-' && *strind != 'x') | |
311 | { | |
312 | tempWidth = read_integer (strind, &nextCharacter); | |
313 | if (strind == nextCharacter) | |
314 | return (0); | |
315 | strind = nextCharacter; | |
316 | mask |= WidthValue; | |
317 | } | |
318 | ||
319 | if (*strind == 'x' || *strind == 'X') | |
320 | { | |
321 | strind++; | |
322 | tempHeight = read_integer (strind, &nextCharacter); | |
323 | if (strind == nextCharacter) | |
324 | return (0); | |
325 | strind = nextCharacter; | |
326 | mask |= HeightValue; | |
327 | } | |
328 | ||
329 | if ((*strind == '+') || (*strind == '-')) | |
330 | { | |
331 | if (*strind == '-') | |
332 | { | |
333 | strind++; | |
334 | tempX = -read_integer (strind, &nextCharacter); | |
335 | if (strind == nextCharacter) | |
336 | return (0); | |
337 | strind = nextCharacter; | |
338 | mask |= XNegative; | |
339 | ||
340 | } | |
341 | else | |
342 | { | |
343 | strind++; | |
344 | tempX = read_integer (strind, &nextCharacter); | |
345 | if (strind == nextCharacter) | |
346 | return (0); | |
347 | strind = nextCharacter; | |
348 | } | |
349 | mask |= XValue; | |
350 | if ((*strind == '+') || (*strind == '-')) | |
351 | { | |
352 | if (*strind == '-') | |
353 | { | |
354 | strind++; | |
355 | tempY = -read_integer (strind, &nextCharacter); | |
356 | if (strind == nextCharacter) | |
357 | return (0); | |
358 | strind = nextCharacter; | |
359 | mask |= YNegative; | |
360 | ||
361 | } | |
362 | else | |
363 | { | |
364 | strind++; | |
365 | tempY = read_integer (strind, &nextCharacter); | |
366 | if (strind == nextCharacter) | |
367 | return (0); | |
368 | strind = nextCharacter; | |
369 | } | |
370 | mask |= YValue; | |
371 | } | |
372 | } | |
373 | ||
374 | /* If strind isn't at the end of the string the it's an invalid | |
375 | geometry specification. */ | |
376 | ||
377 | if (*strind != '\0') return (0); | |
378 | ||
379 | if (mask & XValue) | |
380 | *x = tempX; | |
381 | if (mask & YValue) | |
382 | *y = tempY; | |
383 | if (mask & WidthValue) | |
384 | *width = tempWidth; | |
385 | if (mask & HeightValue) | |
386 | *height = tempHeight; | |
387 | return (mask); | |
388 | } | |
389 | ||
fbd6baed | 390 | /* x_sync is a no-op on W32. */ |
ee78dc32 GV |
391 | void |
392 | x_sync (f) | |
393 | void *f; | |
394 | { | |
395 | } |