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, |
114f9c96 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 | 22 | #include <stdio.h> |
d7306fe6 | 23 | #include <setjmp.h> |
ee78dc32 | 24 | #include "lisp.h" |
3e4731a3 | 25 | #include "keyboard.h" |
97aab3a2 | 26 | #include "frame.h" |
bd6bb544 GV |
27 | #include "charset.h" |
28 | #include "fontset.h" | |
ee78dc32 GV |
29 | #include "blockinput.h" |
30 | #include "w32term.h" | |
31 | #include "windowsx.h" | |
32 | ||
33 | #define myalloc(cb) GlobalAllocPtr (GPTR, cb) | |
34 | #define myfree(lp) GlobalFreePtr (lp) | |
35 | ||
dd118a07 | 36 | CRITICAL_SECTION critsect; |
ee78dc32 | 37 | extern HANDLE keyboard_handle; |
97aab3a2 | 38 | HANDLE input_available = NULL; |
1ce3dc2b | 39 | HANDLE interrupt_handle = NULL; |
ee78dc32 | 40 | |
177c0ea7 | 41 | void |
ee78dc32 GV |
42 | init_crit () |
43 | { | |
dd118a07 | 44 | InitializeCriticalSection (&critsect); |
ee78dc32 | 45 | |
97aab3a2 GV |
46 | /* For safety, input_available should only be reset by get_next_msg |
47 | when the input queue is empty, so make it a manual reset event. */ | |
48 | keyboard_handle = input_available = CreateEvent (NULL, TRUE, FALSE, NULL); | |
1ce3dc2b | 49 | |
04bf5b65 | 50 | /* interrupt_handle is signaled when quit (C-g) is detected, so that |
1ce3dc2b RS |
51 | blocking system calls can be interrupted. We make it a manual |
52 | reset event, so that if we should ever have multiple threads | |
53 | performing system calls, they will all be interrupted (I'm guessing | |
54 | that would the right response). Note that we use PulseEvent to | |
04bf5b65 | 55 | signal this event, so that it never remains signaled. */ |
1ce3dc2b | 56 | interrupt_handle = CreateEvent (NULL, TRUE, FALSE, NULL); |
ee78dc32 GV |
57 | } |
58 | ||
177c0ea7 | 59 | void |
97aab3a2 | 60 | delete_crit () |
ee78dc32 | 61 | { |
97aab3a2 GV |
62 | DeleteCriticalSection (&critsect); |
63 | ||
64 | if (input_available) | |
65 | { | |
66 | CloseHandle (input_available); | |
67 | input_available = NULL; | |
68 | } | |
1ce3dc2b RS |
69 | if (interrupt_handle) |
70 | { | |
71 | CloseHandle (interrupt_handle); | |
72 | interrupt_handle = NULL; | |
73 | } | |
74 | } | |
75 | ||
76 | void | |
77 | signal_quit () | |
78 | { | |
04bf5b65 | 79 | /* Make sure this event never remains signaled; if the main thread |
1ce3dc2b RS |
80 | isn't in a blocking call, then this should do nothing. */ |
81 | PulseEvent (interrupt_handle); | |
d484dc55 GV |
82 | } |
83 | ||
97aab3a2 GV |
84 | void |
85 | select_palette (FRAME_PTR f, HDC hdc) | |
d484dc55 | 86 | { |
90f4a9f8 AI |
87 | struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f); |
88 | ||
89 | if (!display_info->has_palette) | |
90 | return; | |
91 | ||
92 | if (display_info->palette == 0) | |
a8370d72 | 93 | return; |
90f4a9f8 | 94 | |
fbd6baed GV |
95 | if (!NILP (Vw32_enable_palette)) |
96 | f->output_data.w32->old_palette = | |
90f4a9f8 | 97 | SelectPalette (hdc, display_info->palette, FALSE); |
97aab3a2 | 98 | else |
fbd6baed | 99 | f->output_data.w32->old_palette = NULL; |
97aab3a2 GV |
100 | |
101 | if (RealizePalette (hdc)) | |
102 | { | |
103 | Lisp_Object frame, framelist; | |
104 | FOR_EACH_FRAME (framelist, frame) | |
dd118a07 | 105 | { |
97aab3a2 | 106 | SET_FRAME_GARBAGED (XFRAME (frame)); |
dd118a07 | 107 | } |
97aab3a2 GV |
108 | } |
109 | } | |
110 | ||
111 | void | |
112 | deselect_palette (FRAME_PTR f, HDC hdc) | |
113 | { | |
fbd6baed GV |
114 | if (f->output_data.w32->old_palette) |
115 | SelectPalette (hdc, f->output_data.w32->old_palette, FALSE); | |
97aab3a2 GV |
116 | } |
117 | ||
118 | /* Get a DC for frame and select palette for drawing; force an update of | |
119 | all frames if palette's mapping changes. */ | |
120 | HDC | |
121 | get_frame_dc (FRAME_PTR f) | |
122 | { | |
123 | HDC hdc; | |
124 | ||
56c16321 AI |
125 | if (f->output_method != output_w32) |
126 | abort (); | |
127 | ||
97aab3a2 GV |
128 | enter_crit (); |
129 | ||
fbd6baed | 130 | hdc = GetDC (f->output_data.w32->window_desc); |
86d1db20 JR |
131 | |
132 | /* If this gets called during startup before the frame is valid, | |
133 | there is a chance of corrupting random data or crashing. */ | |
134 | if (hdc) | |
135 | select_palette (f, hdc); | |
97aab3a2 GV |
136 | |
137 | return hdc; | |
138 | } | |
139 | ||
140 | int | |
141 | release_frame_dc (FRAME_PTR f, HDC hdc) | |
142 | { | |
143 | int ret; | |
144 | ||
145 | deselect_palette (f, hdc); | |
fbd6baed | 146 | ret = ReleaseDC (f->output_data.w32->window_desc, hdc); |
97aab3a2 GV |
147 | |
148 | leave_crit (); | |
149 | ||
150 | return ret; | |
ee78dc32 GV |
151 | } |
152 | ||
153 | typedef struct int_msg | |
154 | { | |
fbd6baed | 155 | W32Msg w32msg; |
ee78dc32 GV |
156 | struct int_msg *lpNext; |
157 | } int_msg; | |
158 | ||
159 | int_msg *lpHead = NULL; | |
160 | int_msg *lpTail = NULL; | |
161 | int nQueue = 0; | |
162 | ||
177c0ea7 | 163 | BOOL |
ee78dc32 | 164 | get_next_msg (lpmsg, bWait) |
fbd6baed | 165 | W32Msg * lpmsg; |
ee78dc32 GV |
166 | BOOL bWait; |
167 | { | |
168 | BOOL bRet = FALSE; | |
177c0ea7 | 169 | |
dd118a07 | 170 | enter_crit (); |
177c0ea7 | 171 | |
ee78dc32 | 172 | /* The while loop takes care of multiple sets */ |
177c0ea7 | 173 | |
ee78dc32 GV |
174 | while (!nQueue && bWait) |
175 | { | |
dd118a07 | 176 | leave_crit (); |
97aab3a2 | 177 | WaitForSingleObject (input_available, INFINITE); |
dd118a07 | 178 | enter_crit (); |
ee78dc32 | 179 | } |
177c0ea7 | 180 | |
ee78dc32 GV |
181 | if (nQueue) |
182 | { | |
fbd6baed | 183 | bcopy (&(lpHead->w32msg), lpmsg, sizeof (W32Msg)); |
ee78dc32 GV |
184 | |
185 | { | |
186 | int_msg * lpCur = lpHead; | |
177c0ea7 | 187 | |
ee78dc32 | 188 | lpHead = lpHead->lpNext; |
177c0ea7 | 189 | |
ee78dc32 GV |
190 | myfree (lpCur); |
191 | } | |
192 | ||
193 | nQueue--; | |
b668cc18 JR |
194 | /* Consolidate WM_PAINT messages to optimise redrawing. */ |
195 | if (lpmsg->msg.message == WM_PAINT && nQueue) | |
196 | { | |
197 | int_msg * lpCur = lpHead; | |
198 | int_msg * lpPrev = NULL; | |
199 | int_msg * lpNext = NULL; | |
200 | ||
201 | while (lpCur && nQueue) | |
202 | { | |
203 | lpNext = lpCur->lpNext; | |
204 | if (lpCur->w32msg.msg.message == WM_PAINT) | |
205 | { | |
206 | /* Remove this message from the queue. */ | |
207 | if (lpPrev) | |
208 | lpPrev->lpNext = lpNext; | |
209 | else | |
210 | lpHead = lpNext; | |
211 | ||
212 | if (lpCur == lpTail) | |
213 | lpTail = lpPrev; | |
214 | ||
215 | /* Adjust clip rectangle to cover both. */ | |
216 | if (!UnionRect (&(lpmsg->rect), &(lpmsg->rect), | |
217 | &(lpCur->w32msg.rect))) | |
218 | { | |
219 | SetRectEmpty(&(lpmsg->rect)); | |
220 | } | |
221 | ||
222 | myfree (lpCur); | |
223 | ||
224 | nQueue--; | |
225 | ||
226 | lpCur = lpNext; | |
227 | } | |
228 | else | |
229 | { | |
230 | lpPrev = lpCur; | |
231 | lpCur = lpNext; | |
232 | } | |
233 | } | |
234 | } | |
ee78dc32 GV |
235 | |
236 | bRet = TRUE; | |
237 | } | |
97aab3a2 GV |
238 | |
239 | if (nQueue == 0) | |
240 | ResetEvent (input_available); | |
177c0ea7 | 241 | |
dd118a07 | 242 | leave_crit (); |
177c0ea7 | 243 | |
ee78dc32 GV |
244 | return (bRet); |
245 | } | |
246 | ||
177c0ea7 | 247 | BOOL |
ee78dc32 | 248 | post_msg (lpmsg) |
fbd6baed | 249 | W32Msg * lpmsg; |
ee78dc32 GV |
250 | { |
251 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
252 | ||
97aab3a2 GV |
253 | if (!lpNew) |
254 | return (FALSE); | |
ee78dc32 | 255 | |
fbd6baed | 256 | bcopy (lpmsg, &(lpNew->w32msg), sizeof (W32Msg)); |
ee78dc32 GV |
257 | lpNew->lpNext = NULL; |
258 | ||
dd118a07 | 259 | enter_crit (); |
ee78dc32 GV |
260 | |
261 | if (nQueue++) | |
dd118a07 GV |
262 | { |
263 | lpTail->lpNext = lpNew; | |
264 | } | |
177c0ea7 | 265 | else |
dd118a07 GV |
266 | { |
267 | lpHead = lpNew; | |
dd118a07 | 268 | } |
ee78dc32 GV |
269 | |
270 | lpTail = lpNew; | |
97aab3a2 | 271 | SetEvent (input_available); |
177c0ea7 | 272 | |
dd118a07 | 273 | leave_crit (); |
ee78dc32 GV |
274 | |
275 | return (TRUE); | |
276 | } | |
277 | ||
7c69181b | 278 | BOOL |
fbd6baed | 279 | prepend_msg (W32Msg *lpmsg) |
7c69181b GV |
280 | { |
281 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
282 | ||
283 | if (!lpNew) | |
284 | return (FALSE); | |
285 | ||
fbd6baed | 286 | bcopy (lpmsg, &(lpNew->w32msg), sizeof (W32Msg)); |
7c69181b GV |
287 | |
288 | enter_crit (); | |
289 | ||
290 | nQueue++; | |
291 | lpNew->lpNext = lpHead; | |
292 | lpHead = lpNew; | |
293 | ||
294 | leave_crit (); | |
295 | ||
296 | return (TRUE); | |
297 | } | |
298 | ||
716490f0 AI |
299 | /* Process all messages in the current thread's queue. */ |
300 | void | |
301 | drain_message_queue () | |
302 | { | |
303 | MSG msg; | |
304 | while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) | |
305 | { | |
306 | TranslateMessage (&msg); | |
307 | DispatchMessage (&msg); | |
308 | } | |
309 | } | |
310 | ||
311 | ||
ee78dc32 GV |
312 | /* |
313 | * XParseGeometry parses strings of the form | |
314 | * "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where | |
315 | * width, height, xoffset, and yoffset are unsigned integers. | |
316 | * Example: "=80x24+300-49" | |
317 | * The equal sign is optional. | |
318 | * It returns a bitmask that indicates which of the four values | |
319 | * were actually found in the string. For each value found, | |
320 | * the corresponding argument is updated; for each value | |
177c0ea7 | 321 | * not found, the corresponding argument is left unchanged. |
ee78dc32 GV |
322 | */ |
323 | ||
324 | static int | |
325 | read_integer (string, NextString) | |
326 | register char *string; | |
327 | char **NextString; | |
328 | { | |
329 | register int Result = 0; | |
330 | int Sign = 1; | |
177c0ea7 | 331 | |
ee78dc32 GV |
332 | if (*string == '+') |
333 | string++; | |
334 | else if (*string == '-') | |
335 | { | |
336 | string++; | |
337 | Sign = -1; | |
338 | } | |
339 | for (; (*string >= '0') && (*string <= '9'); string++) | |
340 | { | |
341 | Result = (Result * 10) + (*string - '0'); | |
342 | } | |
343 | *NextString = string; | |
344 | if (Sign >= 0) | |
345 | return (Result); | |
346 | else | |
347 | return (-Result); | |
348 | } | |
349 | ||
177c0ea7 | 350 | int |
ee78dc32 GV |
351 | XParseGeometry (string, x, y, width, height) |
352 | char *string; | |
353 | int *x, *y; | |
354 | unsigned int *width, *height; /* RETURN */ | |
355 | { | |
356 | int mask = NoValue; | |
357 | register char *strind; | |
358 | unsigned int tempWidth, tempHeight; | |
359 | int tempX, tempY; | |
360 | char *nextCharacter; | |
177c0ea7 | 361 | |
ee78dc32 GV |
362 | if ((string == NULL) || (*string == '\0')) return (mask); |
363 | if (*string == '=') | |
364 | string++; /* ignore possible '=' at beg of geometry spec */ | |
177c0ea7 | 365 | |
ee78dc32 | 366 | strind = (char *)string; |
177c0ea7 | 367 | if (*strind != '+' && *strind != '-' && *strind != 'x') |
ee78dc32 GV |
368 | { |
369 | tempWidth = read_integer (strind, &nextCharacter); | |
177c0ea7 | 370 | if (strind == nextCharacter) |
ee78dc32 GV |
371 | return (0); |
372 | strind = nextCharacter; | |
373 | mask |= WidthValue; | |
374 | } | |
177c0ea7 JB |
375 | |
376 | if (*strind == 'x' || *strind == 'X') | |
377 | { | |
ee78dc32 GV |
378 | strind++; |
379 | tempHeight = read_integer (strind, &nextCharacter); | |
380 | if (strind == nextCharacter) | |
381 | return (0); | |
382 | strind = nextCharacter; | |
383 | mask |= HeightValue; | |
384 | } | |
177c0ea7 JB |
385 | |
386 | if ((*strind == '+') || (*strind == '-')) | |
ee78dc32 | 387 | { |
177c0ea7 | 388 | if (*strind == '-') |
ee78dc32 GV |
389 | { |
390 | strind++; | |
391 | tempX = -read_integer (strind, &nextCharacter); | |
392 | if (strind == nextCharacter) | |
393 | return (0); | |
394 | strind = nextCharacter; | |
395 | mask |= XNegative; | |
396 | ||
397 | } | |
398 | else | |
177c0ea7 | 399 | { |
ee78dc32 GV |
400 | strind++; |
401 | tempX = read_integer (strind, &nextCharacter); | |
402 | if (strind == nextCharacter) | |
403 | return (0); | |
404 | strind = nextCharacter; | |
405 | } | |
406 | mask |= XValue; | |
177c0ea7 | 407 | if ((*strind == '+') || (*strind == '-')) |
ee78dc32 | 408 | { |
177c0ea7 | 409 | if (*strind == '-') |
ee78dc32 GV |
410 | { |
411 | strind++; | |
412 | tempY = -read_integer (strind, &nextCharacter); | |
413 | if (strind == nextCharacter) | |
414 | return (0); | |
415 | strind = nextCharacter; | |
416 | mask |= YNegative; | |
417 | ||
418 | } | |
419 | else | |
420 | { | |
421 | strind++; | |
422 | tempY = read_integer (strind, &nextCharacter); | |
423 | if (strind == nextCharacter) | |
424 | return (0); | |
425 | strind = nextCharacter; | |
426 | } | |
427 | mask |= YValue; | |
428 | } | |
429 | } | |
177c0ea7 | 430 | |
ee78dc32 GV |
431 | /* If strind isn't at the end of the string the it's an invalid |
432 | geometry specification. */ | |
177c0ea7 | 433 | |
ee78dc32 | 434 | if (*strind != '\0') return (0); |
177c0ea7 | 435 | |
ee78dc32 GV |
436 | if (mask & XValue) |
437 | *x = tempX; | |
438 | if (mask & YValue) | |
439 | *y = tempY; | |
440 | if (mask & WidthValue) | |
441 | *width = tempWidth; | |
442 | if (mask & HeightValue) | |
443 | *height = tempHeight; | |
444 | return (mask); | |
445 | } | |
446 | ||
fbd6baed | 447 | /* x_sync is a no-op on W32. */ |
ee78dc32 GV |
448 | void |
449 | x_sync (f) | |
450 | void *f; | |
451 | { | |
452 | } | |
ab5796a9 MB |
453 | |
454 | /* arch-tag: 4fab3695-4ad3-4cc6-a2b1-fd2c67dc46be | |
455 | (do not change this comment) */ |