Commit | Line | Data |
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e9e23e23 | 1 | /* Functions taken directly from X sources for use with the Microsoft W32 API. |
73b0cd50 | 2 | Copyright (C) 1989, 1992-1995, 1999, 2001-2011 Free Software Foundation, Inc. |
ee78dc32 GV |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
ee78dc32 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
ee78dc32 GV |
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 | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ee78dc32 | 18 | |
ee78dc32 | 19 | #include <config.h> |
68c45bf0 | 20 | #include <signal.h> |
ee78dc32 | 21 | #include <stdio.h> |
d7306fe6 | 22 | #include <setjmp.h> |
ee78dc32 | 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 |
b56ceb92 | 41 | init_crit (void) |
ee78dc32 | 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 | 48 | |
04bf5b65 | 49 | /* interrupt_handle is signaled when quit (C-g) is detected, so that |
1ce3dc2b RS |
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 | |
04bf5b65 | 54 | signal this event, so that it never remains signaled. */ |
1ce3dc2b | 55 | interrupt_handle = CreateEvent (NULL, TRUE, FALSE, NULL); |
ee78dc32 GV |
56 | } |
57 | ||
177c0ea7 | 58 | void |
b56ceb92 | 59 | delete_crit (void) |
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 | |
b56ceb92 | 76 | signal_quit (void) |
1ce3dc2b | 77 | { |
04bf5b65 | 78 | /* Make sure this event never remains signaled; if the main thread |
1ce3dc2b RS |
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 | 99 | |
1c2cc4ef | 100 | if (RealizePalette (hdc) != GDI_ERROR) |
97aab3a2 GV |
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 |
b56ceb92 | 163 | get_next_msg (W32Msg * lpmsg, BOOL bWait) |
ee78dc32 GV |
164 | { |
165 | BOOL bRet = FALSE; | |
177c0ea7 | 166 | |
dd118a07 | 167 | enter_crit (); |
177c0ea7 | 168 | |
ee78dc32 | 169 | /* The while loop takes care of multiple sets */ |
177c0ea7 | 170 | |
ee78dc32 GV |
171 | while (!nQueue && bWait) |
172 | { | |
dd118a07 | 173 | leave_crit (); |
97aab3a2 | 174 | WaitForSingleObject (input_available, INFINITE); |
dd118a07 | 175 | enter_crit (); |
ee78dc32 | 176 | } |
177c0ea7 | 177 | |
ee78dc32 GV |
178 | if (nQueue) |
179 | { | |
72af86bd | 180 | memcpy (lpmsg, &lpHead->w32msg, sizeof (W32Msg)); |
ee78dc32 GV |
181 | |
182 | { | |
183 | int_msg * lpCur = lpHead; | |
177c0ea7 | 184 | |
ee78dc32 | 185 | lpHead = lpHead->lpNext; |
177c0ea7 | 186 | |
ee78dc32 GV |
187 | myfree (lpCur); |
188 | } | |
189 | ||
190 | nQueue--; | |
e1dbe924 | 191 | /* Consolidate WM_PAINT messages to optimize redrawing. */ |
b668cc18 JR |
192 | if (lpmsg->msg.message == WM_PAINT && nQueue) |
193 | { | |
194 | int_msg * lpCur = lpHead; | |
195 | int_msg * lpPrev = NULL; | |
196 | int_msg * lpNext = NULL; | |
197 | ||
198 | while (lpCur && nQueue) | |
199 | { | |
200 | lpNext = lpCur->lpNext; | |
201 | if (lpCur->w32msg.msg.message == WM_PAINT) | |
202 | { | |
203 | /* Remove this message from the queue. */ | |
204 | if (lpPrev) | |
205 | lpPrev->lpNext = lpNext; | |
206 | else | |
207 | lpHead = lpNext; | |
208 | ||
209 | if (lpCur == lpTail) | |
210 | lpTail = lpPrev; | |
211 | ||
212 | /* Adjust clip rectangle to cover both. */ | |
213 | if (!UnionRect (&(lpmsg->rect), &(lpmsg->rect), | |
214 | &(lpCur->w32msg.rect))) | |
215 | { | |
ed3751c8 | 216 | SetRectEmpty (&(lpmsg->rect)); |
b668cc18 JR |
217 | } |
218 | ||
219 | myfree (lpCur); | |
220 | ||
221 | nQueue--; | |
222 | ||
223 | lpCur = lpNext; | |
224 | } | |
225 | else | |
226 | { | |
227 | lpPrev = lpCur; | |
228 | lpCur = lpNext; | |
229 | } | |
230 | } | |
231 | } | |
ee78dc32 GV |
232 | |
233 | bRet = TRUE; | |
234 | } | |
97aab3a2 GV |
235 | |
236 | if (nQueue == 0) | |
237 | ResetEvent (input_available); | |
177c0ea7 | 238 | |
dd118a07 | 239 | leave_crit (); |
177c0ea7 | 240 | |
ee78dc32 GV |
241 | return (bRet); |
242 | } | |
243 | ||
177c0ea7 | 244 | BOOL |
b56ceb92 | 245 | post_msg (W32Msg * lpmsg) |
ee78dc32 GV |
246 | { |
247 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
248 | ||
97aab3a2 GV |
249 | if (!lpNew) |
250 | return (FALSE); | |
ee78dc32 | 251 | |
72af86bd | 252 | memcpy (&lpNew->w32msg, lpmsg, sizeof (W32Msg)); |
ee78dc32 GV |
253 | lpNew->lpNext = NULL; |
254 | ||
dd118a07 | 255 | enter_crit (); |
ee78dc32 GV |
256 | |
257 | if (nQueue++) | |
dd118a07 GV |
258 | { |
259 | lpTail->lpNext = lpNew; | |
260 | } | |
177c0ea7 | 261 | else |
dd118a07 GV |
262 | { |
263 | lpHead = lpNew; | |
dd118a07 | 264 | } |
ee78dc32 GV |
265 | |
266 | lpTail = lpNew; | |
97aab3a2 | 267 | SetEvent (input_available); |
177c0ea7 | 268 | |
dd118a07 | 269 | leave_crit (); |
ee78dc32 GV |
270 | |
271 | return (TRUE); | |
272 | } | |
273 | ||
7c69181b | 274 | BOOL |
fbd6baed | 275 | prepend_msg (W32Msg *lpmsg) |
7c69181b GV |
276 | { |
277 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
278 | ||
279 | if (!lpNew) | |
280 | return (FALSE); | |
281 | ||
72af86bd | 282 | memcpy (&lpNew->w32msg, lpmsg, sizeof (W32Msg)); |
7c69181b GV |
283 | |
284 | enter_crit (); | |
285 | ||
286 | nQueue++; | |
287 | lpNew->lpNext = lpHead; | |
288 | lpHead = lpNew; | |
289 | ||
290 | leave_crit (); | |
291 | ||
292 | return (TRUE); | |
293 | } | |
294 | ||
716490f0 AI |
295 | /* Process all messages in the current thread's queue. */ |
296 | void | |
b56ceb92 | 297 | drain_message_queue (void) |
716490f0 AI |
298 | { |
299 | MSG msg; | |
300 | while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) | |
301 | { | |
302 | TranslateMessage (&msg); | |
303 | DispatchMessage (&msg); | |
304 | } | |
305 | } | |
306 | ||
307 | ||
ee78dc32 GV |
308 | /* |
309 | * XParseGeometry parses strings of the form | |
310 | * "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where | |
311 | * width, height, xoffset, and yoffset are unsigned integers. | |
312 | * Example: "=80x24+300-49" | |
313 | * The equal sign is optional. | |
314 | * It returns a bitmask that indicates which of the four values | |
315 | * were actually found in the string. For each value found, | |
316 | * the corresponding argument is updated; for each value | |
177c0ea7 | 317 | * not found, the corresponding argument is left unchanged. |
ee78dc32 GV |
318 | */ |
319 | ||
320 | static int | |
b56ceb92 | 321 | read_integer (register char *string, char **NextString) |
ee78dc32 GV |
322 | { |
323 | register int Result = 0; | |
324 | int Sign = 1; | |
177c0ea7 | 325 | |
ee78dc32 GV |
326 | if (*string == '+') |
327 | string++; | |
328 | else if (*string == '-') | |
329 | { | |
330 | string++; | |
331 | Sign = -1; | |
332 | } | |
333 | for (; (*string >= '0') && (*string <= '9'); string++) | |
334 | { | |
335 | Result = (Result * 10) + (*string - '0'); | |
336 | } | |
337 | *NextString = string; | |
338 | if (Sign >= 0) | |
339 | return (Result); | |
340 | else | |
341 | return (-Result); | |
342 | } | |
343 | ||
177c0ea7 | 344 | int |
b56ceb92 JB |
345 | XParseGeometry (char *string, |
346 | int *x, int *y, | |
347 | unsigned int *width, unsigned int *height) | |
ee78dc32 GV |
348 | { |
349 | int mask = NoValue; | |
350 | register char *strind; | |
351 | unsigned int tempWidth, tempHeight; | |
352 | int tempX, tempY; | |
353 | char *nextCharacter; | |
177c0ea7 | 354 | |
ee78dc32 GV |
355 | if ((string == NULL) || (*string == '\0')) return (mask); |
356 | if (*string == '=') | |
357 | string++; /* ignore possible '=' at beg of geometry spec */ | |
177c0ea7 | 358 | |
ee78dc32 | 359 | strind = (char *)string; |
177c0ea7 | 360 | if (*strind != '+' && *strind != '-' && *strind != 'x') |
ee78dc32 GV |
361 | { |
362 | tempWidth = read_integer (strind, &nextCharacter); | |
177c0ea7 | 363 | if (strind == nextCharacter) |
ee78dc32 GV |
364 | return (0); |
365 | strind = nextCharacter; | |
366 | mask |= WidthValue; | |
367 | } | |
177c0ea7 JB |
368 | |
369 | if (*strind == 'x' || *strind == 'X') | |
370 | { | |
ee78dc32 GV |
371 | strind++; |
372 | tempHeight = read_integer (strind, &nextCharacter); | |
373 | if (strind == nextCharacter) | |
374 | return (0); | |
375 | strind = nextCharacter; | |
376 | mask |= HeightValue; | |
377 | } | |
177c0ea7 JB |
378 | |
379 | if ((*strind == '+') || (*strind == '-')) | |
ee78dc32 | 380 | { |
177c0ea7 | 381 | if (*strind == '-') |
ee78dc32 GV |
382 | { |
383 | strind++; | |
384 | tempX = -read_integer (strind, &nextCharacter); | |
385 | if (strind == nextCharacter) | |
386 | return (0); | |
387 | strind = nextCharacter; | |
388 | mask |= XNegative; | |
389 | ||
390 | } | |
391 | else | |
177c0ea7 | 392 | { |
ee78dc32 GV |
393 | strind++; |
394 | tempX = read_integer (strind, &nextCharacter); | |
395 | if (strind == nextCharacter) | |
396 | return (0); | |
397 | strind = nextCharacter; | |
398 | } | |
399 | mask |= XValue; | |
177c0ea7 | 400 | if ((*strind == '+') || (*strind == '-')) |
ee78dc32 | 401 | { |
177c0ea7 | 402 | if (*strind == '-') |
ee78dc32 GV |
403 | { |
404 | strind++; | |
405 | tempY = -read_integer (strind, &nextCharacter); | |
406 | if (strind == nextCharacter) | |
407 | return (0); | |
408 | strind = nextCharacter; | |
409 | mask |= YNegative; | |
ee78dc32 GV |
410 | } |
411 | else | |
412 | { | |
413 | strind++; | |
414 | tempY = read_integer (strind, &nextCharacter); | |
415 | if (strind == nextCharacter) | |
416 | return (0); | |
417 | strind = nextCharacter; | |
418 | } | |
419 | mask |= YValue; | |
420 | } | |
421 | } | |
177c0ea7 | 422 | |
9d4f32e8 | 423 | /* If strind isn't at the end of the string then it's an invalid |
ee78dc32 | 424 | geometry specification. */ |
177c0ea7 | 425 | |
ee78dc32 | 426 | if (*strind != '\0') return (0); |
177c0ea7 | 427 | |
ee78dc32 GV |
428 | if (mask & XValue) |
429 | *x = tempX; | |
430 | if (mask & YValue) | |
431 | *y = tempY; | |
432 | if (mask & WidthValue) | |
433 | *width = tempWidth; | |
434 | if (mask & HeightValue) | |
435 | *height = tempHeight; | |
436 | return (mask); | |
437 | } | |
438 | ||
fbd6baed | 439 | /* x_sync is a no-op on W32. */ |
ee78dc32 | 440 | void |
b56ceb92 | 441 | x_sync (void *f) |
ee78dc32 GV |
442 | { |
443 | } |