Commit | Line | Data |
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e9e23e23 | 1 | /* Functions taken directly from X sources for use with the Microsoft W32 API. |
429ab54e | 2 | Copyright (C) 1989, 1992, 1993, 1994, 1995, 1999, 2001, 2002, 2003, |
8cabe764 | 3 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
ee78dc32 GV |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
ee78dc32 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
ee78dc32 GV |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ee78dc32 | 19 | |
ee78dc32 | 20 | #include <config.h> |
68c45bf0 | 21 | #include <signal.h> |
ee78dc32 GV |
22 | #include <stdio.h> |
23 | #include "lisp.h" | |
3e4731a3 | 24 | #include "keyboard.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 | 39 | |
177c0ea7 | 40 | void |
ee78dc32 GV |
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 | ||
177c0ea7 | 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 | { |
90f4a9f8 AI |
86 | struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f); |
87 | ||
88 | if (!display_info->has_palette) | |
89 | return; | |
90 | ||
91 | if (display_info->palette == 0) | |
a8370d72 | 92 | return; |
90f4a9f8 | 93 | |
fbd6baed GV |
94 | if (!NILP (Vw32_enable_palette)) |
95 | f->output_data.w32->old_palette = | |
90f4a9f8 | 96 | SelectPalette (hdc, display_info->palette, FALSE); |
97aab3a2 | 97 | else |
fbd6baed | 98 | f->output_data.w32->old_palette = NULL; |
97aab3a2 GV |
99 | |
100 | if (RealizePalette (hdc)) | |
101 | { | |
102 | Lisp_Object frame, framelist; | |
103 | FOR_EACH_FRAME (framelist, frame) | |
dd118a07 | 104 | { |
97aab3a2 | 105 | SET_FRAME_GARBAGED (XFRAME (frame)); |
dd118a07 | 106 | } |
97aab3a2 GV |
107 | } |
108 | } | |
109 | ||
110 | void | |
111 | deselect_palette (FRAME_PTR f, HDC hdc) | |
112 | { | |
fbd6baed GV |
113 | if (f->output_data.w32->old_palette) |
114 | SelectPalette (hdc, f->output_data.w32->old_palette, FALSE); | |
97aab3a2 GV |
115 | } |
116 | ||
117 | /* Get a DC for frame and select palette for drawing; force an update of | |
118 | all frames if palette's mapping changes. */ | |
119 | HDC | |
120 | get_frame_dc (FRAME_PTR f) | |
121 | { | |
122 | HDC hdc; | |
123 | ||
56c16321 AI |
124 | if (f->output_method != output_w32) |
125 | abort (); | |
126 | ||
97aab3a2 GV |
127 | enter_crit (); |
128 | ||
fbd6baed | 129 | hdc = GetDC (f->output_data.w32->window_desc); |
86d1db20 JR |
130 | |
131 | /* If this gets called during startup before the frame is valid, | |
132 | there is a chance of corrupting random data or crashing. */ | |
133 | if (hdc) | |
134 | select_palette (f, hdc); | |
97aab3a2 GV |
135 | |
136 | return hdc; | |
137 | } | |
138 | ||
139 | int | |
140 | release_frame_dc (FRAME_PTR f, HDC hdc) | |
141 | { | |
142 | int ret; | |
143 | ||
144 | deselect_palette (f, hdc); | |
fbd6baed | 145 | ret = ReleaseDC (f->output_data.w32->window_desc, hdc); |
97aab3a2 GV |
146 | |
147 | leave_crit (); | |
148 | ||
149 | return ret; | |
ee78dc32 GV |
150 | } |
151 | ||
152 | typedef struct int_msg | |
153 | { | |
fbd6baed | 154 | W32Msg w32msg; |
ee78dc32 GV |
155 | struct int_msg *lpNext; |
156 | } int_msg; | |
157 | ||
158 | int_msg *lpHead = NULL; | |
159 | int_msg *lpTail = NULL; | |
160 | int nQueue = 0; | |
161 | ||
177c0ea7 | 162 | BOOL |
ee78dc32 | 163 | get_next_msg (lpmsg, bWait) |
fbd6baed | 164 | W32Msg * lpmsg; |
ee78dc32 GV |
165 | BOOL bWait; |
166 | { | |
167 | BOOL bRet = FALSE; | |
177c0ea7 | 168 | |
dd118a07 | 169 | enter_crit (); |
177c0ea7 | 170 | |
ee78dc32 | 171 | /* The while loop takes care of multiple sets */ |
177c0ea7 | 172 | |
ee78dc32 GV |
173 | while (!nQueue && bWait) |
174 | { | |
dd118a07 | 175 | leave_crit (); |
97aab3a2 | 176 | WaitForSingleObject (input_available, INFINITE); |
dd118a07 | 177 | enter_crit (); |
ee78dc32 | 178 | } |
177c0ea7 | 179 | |
ee78dc32 GV |
180 | if (nQueue) |
181 | { | |
fbd6baed | 182 | bcopy (&(lpHead->w32msg), lpmsg, sizeof (W32Msg)); |
ee78dc32 GV |
183 | |
184 | { | |
185 | int_msg * lpCur = lpHead; | |
177c0ea7 | 186 | |
ee78dc32 | 187 | lpHead = lpHead->lpNext; |
177c0ea7 | 188 | |
ee78dc32 GV |
189 | myfree (lpCur); |
190 | } | |
191 | ||
192 | nQueue--; | |
b668cc18 JR |
193 | /* Consolidate WM_PAINT messages to optimise redrawing. */ |
194 | if (lpmsg->msg.message == WM_PAINT && nQueue) | |
195 | { | |
196 | int_msg * lpCur = lpHead; | |
197 | int_msg * lpPrev = NULL; | |
198 | int_msg * lpNext = NULL; | |
199 | ||
200 | while (lpCur && nQueue) | |
201 | { | |
202 | lpNext = lpCur->lpNext; | |
203 | if (lpCur->w32msg.msg.message == WM_PAINT) | |
204 | { | |
205 | /* Remove this message from the queue. */ | |
206 | if (lpPrev) | |
207 | lpPrev->lpNext = lpNext; | |
208 | else | |
209 | lpHead = lpNext; | |
210 | ||
211 | if (lpCur == lpTail) | |
212 | lpTail = lpPrev; | |
213 | ||
214 | /* Adjust clip rectangle to cover both. */ | |
215 | if (!UnionRect (&(lpmsg->rect), &(lpmsg->rect), | |
216 | &(lpCur->w32msg.rect))) | |
217 | { | |
218 | SetRectEmpty(&(lpmsg->rect)); | |
219 | } | |
220 | ||
221 | myfree (lpCur); | |
222 | ||
223 | nQueue--; | |
224 | ||
225 | lpCur = lpNext; | |
226 | } | |
227 | else | |
228 | { | |
229 | lpPrev = lpCur; | |
230 | lpCur = lpNext; | |
231 | } | |
232 | } | |
233 | } | |
ee78dc32 GV |
234 | |
235 | bRet = TRUE; | |
236 | } | |
97aab3a2 GV |
237 | |
238 | if (nQueue == 0) | |
239 | ResetEvent (input_available); | |
177c0ea7 | 240 | |
dd118a07 | 241 | leave_crit (); |
177c0ea7 | 242 | |
ee78dc32 GV |
243 | return (bRet); |
244 | } | |
245 | ||
177c0ea7 | 246 | BOOL |
ee78dc32 | 247 | post_msg (lpmsg) |
fbd6baed | 248 | W32Msg * lpmsg; |
ee78dc32 GV |
249 | { |
250 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
251 | ||
97aab3a2 GV |
252 | if (!lpNew) |
253 | return (FALSE); | |
ee78dc32 | 254 | |
fbd6baed | 255 | bcopy (lpmsg, &(lpNew->w32msg), sizeof (W32Msg)); |
ee78dc32 GV |
256 | lpNew->lpNext = NULL; |
257 | ||
dd118a07 | 258 | enter_crit (); |
ee78dc32 GV |
259 | |
260 | if (nQueue++) | |
dd118a07 GV |
261 | { |
262 | lpTail->lpNext = lpNew; | |
263 | } | |
177c0ea7 | 264 | else |
dd118a07 GV |
265 | { |
266 | lpHead = lpNew; | |
dd118a07 | 267 | } |
ee78dc32 GV |
268 | |
269 | lpTail = lpNew; | |
97aab3a2 | 270 | SetEvent (input_available); |
177c0ea7 | 271 | |
dd118a07 | 272 | leave_crit (); |
ee78dc32 GV |
273 | |
274 | return (TRUE); | |
275 | } | |
276 | ||
7c69181b | 277 | BOOL |
fbd6baed | 278 | prepend_msg (W32Msg *lpmsg) |
7c69181b GV |
279 | { |
280 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
281 | ||
282 | if (!lpNew) | |
283 | return (FALSE); | |
284 | ||
fbd6baed | 285 | bcopy (lpmsg, &(lpNew->w32msg), sizeof (W32Msg)); |
7c69181b GV |
286 | |
287 | enter_crit (); | |
288 | ||
289 | nQueue++; | |
290 | lpNew->lpNext = lpHead; | |
291 | lpHead = lpNew; | |
292 | ||
293 | leave_crit (); | |
294 | ||
295 | return (TRUE); | |
296 | } | |
297 | ||
716490f0 AI |
298 | /* Process all messages in the current thread's queue. */ |
299 | void | |
300 | drain_message_queue () | |
301 | { | |
302 | MSG msg; | |
303 | while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) | |
304 | { | |
305 | TranslateMessage (&msg); | |
306 | DispatchMessage (&msg); | |
307 | } | |
308 | } | |
309 | ||
310 | ||
ee78dc32 GV |
311 | /* |
312 | * XParseGeometry parses strings of the form | |
313 | * "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where | |
314 | * width, height, xoffset, and yoffset are unsigned integers. | |
315 | * Example: "=80x24+300-49" | |
316 | * The equal sign is optional. | |
317 | * It returns a bitmask that indicates which of the four values | |
318 | * were actually found in the string. For each value found, | |
319 | * the corresponding argument is updated; for each value | |
177c0ea7 | 320 | * not found, the corresponding argument is left unchanged. |
ee78dc32 GV |
321 | */ |
322 | ||
323 | static int | |
324 | read_integer (string, NextString) | |
325 | register char *string; | |
326 | char **NextString; | |
327 | { | |
328 | register int Result = 0; | |
329 | int Sign = 1; | |
177c0ea7 | 330 | |
ee78dc32 GV |
331 | if (*string == '+') |
332 | string++; | |
333 | else if (*string == '-') | |
334 | { | |
335 | string++; | |
336 | Sign = -1; | |
337 | } | |
338 | for (; (*string >= '0') && (*string <= '9'); string++) | |
339 | { | |
340 | Result = (Result * 10) + (*string - '0'); | |
341 | } | |
342 | *NextString = string; | |
343 | if (Sign >= 0) | |
344 | return (Result); | |
345 | else | |
346 | return (-Result); | |
347 | } | |
348 | ||
177c0ea7 | 349 | int |
ee78dc32 GV |
350 | XParseGeometry (string, x, y, width, height) |
351 | char *string; | |
352 | int *x, *y; | |
353 | unsigned int *width, *height; /* RETURN */ | |
354 | { | |
355 | int mask = NoValue; | |
356 | register char *strind; | |
357 | unsigned int tempWidth, tempHeight; | |
358 | int tempX, tempY; | |
359 | char *nextCharacter; | |
177c0ea7 | 360 | |
ee78dc32 GV |
361 | if ((string == NULL) || (*string == '\0')) return (mask); |
362 | if (*string == '=') | |
363 | string++; /* ignore possible '=' at beg of geometry spec */ | |
177c0ea7 | 364 | |
ee78dc32 | 365 | strind = (char *)string; |
177c0ea7 | 366 | if (*strind != '+' && *strind != '-' && *strind != 'x') |
ee78dc32 GV |
367 | { |
368 | tempWidth = read_integer (strind, &nextCharacter); | |
177c0ea7 | 369 | if (strind == nextCharacter) |
ee78dc32 GV |
370 | return (0); |
371 | strind = nextCharacter; | |
372 | mask |= WidthValue; | |
373 | } | |
177c0ea7 JB |
374 | |
375 | if (*strind == 'x' || *strind == 'X') | |
376 | { | |
ee78dc32 GV |
377 | strind++; |
378 | tempHeight = read_integer (strind, &nextCharacter); | |
379 | if (strind == nextCharacter) | |
380 | return (0); | |
381 | strind = nextCharacter; | |
382 | mask |= HeightValue; | |
383 | } | |
177c0ea7 JB |
384 | |
385 | if ((*strind == '+') || (*strind == '-')) | |
ee78dc32 | 386 | { |
177c0ea7 | 387 | if (*strind == '-') |
ee78dc32 GV |
388 | { |
389 | strind++; | |
390 | tempX = -read_integer (strind, &nextCharacter); | |
391 | if (strind == nextCharacter) | |
392 | return (0); | |
393 | strind = nextCharacter; | |
394 | mask |= XNegative; | |
395 | ||
396 | } | |
397 | else | |
177c0ea7 | 398 | { |
ee78dc32 GV |
399 | strind++; |
400 | tempX = read_integer (strind, &nextCharacter); | |
401 | if (strind == nextCharacter) | |
402 | return (0); | |
403 | strind = nextCharacter; | |
404 | } | |
405 | mask |= XValue; | |
177c0ea7 | 406 | if ((*strind == '+') || (*strind == '-')) |
ee78dc32 | 407 | { |
177c0ea7 | 408 | if (*strind == '-') |
ee78dc32 GV |
409 | { |
410 | strind++; | |
411 | tempY = -read_integer (strind, &nextCharacter); | |
412 | if (strind == nextCharacter) | |
413 | return (0); | |
414 | strind = nextCharacter; | |
415 | mask |= YNegative; | |
416 | ||
417 | } | |
418 | else | |
419 | { | |
420 | strind++; | |
421 | tempY = read_integer (strind, &nextCharacter); | |
422 | if (strind == nextCharacter) | |
423 | return (0); | |
424 | strind = nextCharacter; | |
425 | } | |
426 | mask |= YValue; | |
427 | } | |
428 | } | |
177c0ea7 | 429 | |
ee78dc32 GV |
430 | /* If strind isn't at the end of the string the it's an invalid |
431 | geometry specification. */ | |
177c0ea7 | 432 | |
ee78dc32 | 433 | if (*strind != '\0') return (0); |
177c0ea7 | 434 | |
ee78dc32 GV |
435 | if (mask & XValue) |
436 | *x = tempX; | |
437 | if (mask & YValue) | |
438 | *y = tempY; | |
439 | if (mask & WidthValue) | |
440 | *width = tempWidth; | |
441 | if (mask & HeightValue) | |
442 | *height = tempHeight; | |
443 | return (mask); | |
444 | } | |
445 | ||
fbd6baed | 446 | /* x_sync is a no-op on W32. */ |
ee78dc32 GV |
447 | void |
448 | x_sync (f) | |
449 | void *f; | |
450 | { | |
451 | } | |
ab5796a9 MB |
452 | |
453 | /* arch-tag: 4fab3695-4ad3-4cc6-a2b1-fd2c67dc46be | |
454 | (do not change this comment) */ |