Commit | Line | Data |
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b46a6a83 | 1 | /* Functions taken directly from X sources for use with the Microsoft Windows API. |
acaf905b | 2 | Copyright (C) 1989, 1992-1995, 1999, 2001-2012 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> |
0fda9b75 | 22 | |
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; |
0fda9b75 DC |
36 | |
37 | #ifdef WINDOWSNT | |
ee78dc32 | 38 | extern HANDLE keyboard_handle; |
0fda9b75 DC |
39 | #endif /* WINDOWSNT */ |
40 | ||
97aab3a2 | 41 | HANDLE input_available = NULL; |
1ce3dc2b | 42 | HANDLE interrupt_handle = NULL; |
ee78dc32 | 43 | |
177c0ea7 | 44 | void |
b56ceb92 | 45 | init_crit (void) |
ee78dc32 | 46 | { |
dd118a07 | 47 | InitializeCriticalSection (&critsect); |
ee78dc32 | 48 | |
97aab3a2 GV |
49 | /* For safety, input_available should only be reset by get_next_msg |
50 | when the input queue is empty, so make it a manual reset event. */ | |
0fda9b75 DC |
51 | input_available = CreateEvent (NULL, TRUE, FALSE, NULL); |
52 | ||
53 | #ifdef WINDOWSNT | |
54 | keyboard_handle = input_available; | |
55 | #endif /* WINDOWSNT */ | |
1ce3dc2b | 56 | |
04bf5b65 | 57 | /* interrupt_handle is signaled when quit (C-g) is detected, so that |
1ce3dc2b RS |
58 | blocking system calls can be interrupted. We make it a manual |
59 | reset event, so that if we should ever have multiple threads | |
60 | performing system calls, they will all be interrupted (I'm guessing | |
61 | that would the right response). Note that we use PulseEvent to | |
04bf5b65 | 62 | signal this event, so that it never remains signaled. */ |
1ce3dc2b | 63 | interrupt_handle = CreateEvent (NULL, TRUE, FALSE, NULL); |
ee78dc32 GV |
64 | } |
65 | ||
177c0ea7 | 66 | void |
b56ceb92 | 67 | delete_crit (void) |
ee78dc32 | 68 | { |
97aab3a2 GV |
69 | DeleteCriticalSection (&critsect); |
70 | ||
71 | if (input_available) | |
72 | { | |
73 | CloseHandle (input_available); | |
74 | input_available = NULL; | |
75 | } | |
1ce3dc2b RS |
76 | if (interrupt_handle) |
77 | { | |
78 | CloseHandle (interrupt_handle); | |
79 | interrupt_handle = NULL; | |
80 | } | |
81 | } | |
82 | ||
83 | void | |
b56ceb92 | 84 | signal_quit (void) |
1ce3dc2b | 85 | { |
04bf5b65 | 86 | /* Make sure this event never remains signaled; if the main thread |
1ce3dc2b RS |
87 | isn't in a blocking call, then this should do nothing. */ |
88 | PulseEvent (interrupt_handle); | |
d484dc55 GV |
89 | } |
90 | ||
97aab3a2 GV |
91 | void |
92 | select_palette (FRAME_PTR f, HDC hdc) | |
d484dc55 | 93 | { |
90f4a9f8 AI |
94 | struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f); |
95 | ||
96 | if (!display_info->has_palette) | |
97 | return; | |
98 | ||
99 | if (display_info->palette == 0) | |
a8370d72 | 100 | return; |
90f4a9f8 | 101 | |
fbd6baed GV |
102 | if (!NILP (Vw32_enable_palette)) |
103 | f->output_data.w32->old_palette = | |
90f4a9f8 | 104 | SelectPalette (hdc, display_info->palette, FALSE); |
97aab3a2 | 105 | else |
fbd6baed | 106 | f->output_data.w32->old_palette = NULL; |
97aab3a2 | 107 | |
1c2cc4ef | 108 | if (RealizePalette (hdc) != GDI_ERROR) |
97aab3a2 GV |
109 | { |
110 | Lisp_Object frame, framelist; | |
111 | FOR_EACH_FRAME (framelist, frame) | |
dd118a07 | 112 | { |
97aab3a2 | 113 | SET_FRAME_GARBAGED (XFRAME (frame)); |
dd118a07 | 114 | } |
97aab3a2 GV |
115 | } |
116 | } | |
117 | ||
118 | void | |
119 | deselect_palette (FRAME_PTR f, HDC hdc) | |
120 | { | |
fbd6baed GV |
121 | if (f->output_data.w32->old_palette) |
122 | SelectPalette (hdc, f->output_data.w32->old_palette, FALSE); | |
97aab3a2 GV |
123 | } |
124 | ||
125 | /* Get a DC for frame and select palette for drawing; force an update of | |
126 | all frames if palette's mapping changes. */ | |
127 | HDC | |
128 | get_frame_dc (FRAME_PTR f) | |
129 | { | |
130 | HDC hdc; | |
131 | ||
56c16321 | 132 | if (f->output_method != output_w32) |
1088b922 | 133 | emacs_abort (); |
56c16321 | 134 | |
97aab3a2 GV |
135 | enter_crit (); |
136 | ||
fbd6baed | 137 | hdc = GetDC (f->output_data.w32->window_desc); |
86d1db20 JR |
138 | |
139 | /* If this gets called during startup before the frame is valid, | |
140 | there is a chance of corrupting random data or crashing. */ | |
141 | if (hdc) | |
142 | select_palette (f, hdc); | |
97aab3a2 GV |
143 | |
144 | return hdc; | |
145 | } | |
146 | ||
147 | int | |
148 | release_frame_dc (FRAME_PTR f, HDC hdc) | |
149 | { | |
150 | int ret; | |
151 | ||
152 | deselect_palette (f, hdc); | |
fbd6baed | 153 | ret = ReleaseDC (f->output_data.w32->window_desc, hdc); |
97aab3a2 GV |
154 | |
155 | leave_crit (); | |
156 | ||
157 | return ret; | |
ee78dc32 GV |
158 | } |
159 | ||
160 | typedef struct int_msg | |
161 | { | |
fbd6baed | 162 | W32Msg w32msg; |
ee78dc32 GV |
163 | struct int_msg *lpNext; |
164 | } int_msg; | |
165 | ||
166 | int_msg *lpHead = NULL; | |
167 | int_msg *lpTail = NULL; | |
168 | int nQueue = 0; | |
169 | ||
177c0ea7 | 170 | BOOL |
b56ceb92 | 171 | get_next_msg (W32Msg * lpmsg, BOOL bWait) |
ee78dc32 GV |
172 | { |
173 | BOOL bRet = FALSE; | |
177c0ea7 | 174 | |
dd118a07 | 175 | enter_crit (); |
177c0ea7 | 176 | |
ee78dc32 | 177 | /* The while loop takes care of multiple sets */ |
177c0ea7 | 178 | |
ee78dc32 GV |
179 | while (!nQueue && bWait) |
180 | { | |
dd118a07 | 181 | leave_crit (); |
97aab3a2 | 182 | WaitForSingleObject (input_available, INFINITE); |
dd118a07 | 183 | enter_crit (); |
ee78dc32 | 184 | } |
177c0ea7 | 185 | |
ee78dc32 GV |
186 | if (nQueue) |
187 | { | |
72af86bd | 188 | memcpy (lpmsg, &lpHead->w32msg, sizeof (W32Msg)); |
ee78dc32 GV |
189 | |
190 | { | |
191 | int_msg * lpCur = lpHead; | |
177c0ea7 | 192 | |
ee78dc32 | 193 | lpHead = lpHead->lpNext; |
177c0ea7 | 194 | |
ee78dc32 GV |
195 | myfree (lpCur); |
196 | } | |
197 | ||
198 | nQueue--; | |
e1dbe924 | 199 | /* Consolidate WM_PAINT messages to optimize redrawing. */ |
b668cc18 JR |
200 | if (lpmsg->msg.message == WM_PAINT && nQueue) |
201 | { | |
202 | int_msg * lpCur = lpHead; | |
203 | int_msg * lpPrev = NULL; | |
204 | int_msg * lpNext = NULL; | |
205 | ||
206 | while (lpCur && nQueue) | |
207 | { | |
208 | lpNext = lpCur->lpNext; | |
209 | if (lpCur->w32msg.msg.message == WM_PAINT) | |
210 | { | |
211 | /* Remove this message from the queue. */ | |
212 | if (lpPrev) | |
213 | lpPrev->lpNext = lpNext; | |
214 | else | |
215 | lpHead = lpNext; | |
216 | ||
217 | if (lpCur == lpTail) | |
218 | lpTail = lpPrev; | |
219 | ||
220 | /* Adjust clip rectangle to cover both. */ | |
221 | if (!UnionRect (&(lpmsg->rect), &(lpmsg->rect), | |
222 | &(lpCur->w32msg.rect))) | |
223 | { | |
ed3751c8 | 224 | SetRectEmpty (&(lpmsg->rect)); |
b668cc18 JR |
225 | } |
226 | ||
227 | myfree (lpCur); | |
228 | ||
229 | nQueue--; | |
230 | ||
231 | lpCur = lpNext; | |
232 | } | |
233 | else | |
234 | { | |
235 | lpPrev = lpCur; | |
236 | lpCur = lpNext; | |
237 | } | |
238 | } | |
239 | } | |
ee78dc32 GV |
240 | |
241 | bRet = TRUE; | |
242 | } | |
97aab3a2 GV |
243 | |
244 | if (nQueue == 0) | |
245 | ResetEvent (input_available); | |
177c0ea7 | 246 | |
dd118a07 | 247 | leave_crit (); |
177c0ea7 | 248 | |
ee78dc32 GV |
249 | return (bRet); |
250 | } | |
251 | ||
0fda9b75 DC |
252 | extern char * w32_strerror (int error_no); |
253 | ||
254 | /* Tell the main thread that we have input available; if the main | |
255 | thread is blocked in select(), we wake it up here. */ | |
256 | static void | |
257 | notify_msg_ready (void) | |
258 | { | |
259 | SetEvent (input_available); | |
260 | ||
261 | #ifdef CYGWIN | |
262 | /* Wakes up the main thread, which is blocked select()ing for /dev/windows, | |
263 | among other files. */ | |
264 | (void) PostThreadMessage (dwMainThreadId, WM_EMACS_INPUT_READY, 0, 0); | |
265 | #endif /* CYGWIN */ | |
266 | } | |
267 | ||
177c0ea7 | 268 | BOOL |
b56ceb92 | 269 | post_msg (W32Msg * lpmsg) |
ee78dc32 GV |
270 | { |
271 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
272 | ||
97aab3a2 GV |
273 | if (!lpNew) |
274 | return (FALSE); | |
ee78dc32 | 275 | |
72af86bd | 276 | memcpy (&lpNew->w32msg, lpmsg, sizeof (W32Msg)); |
ee78dc32 GV |
277 | lpNew->lpNext = NULL; |
278 | ||
dd118a07 | 279 | enter_crit (); |
ee78dc32 GV |
280 | |
281 | if (nQueue++) | |
dd118a07 GV |
282 | { |
283 | lpTail->lpNext = lpNew; | |
284 | } | |
177c0ea7 | 285 | else |
dd118a07 GV |
286 | { |
287 | lpHead = lpNew; | |
dd118a07 | 288 | } |
ee78dc32 GV |
289 | |
290 | lpTail = lpNew; | |
0fda9b75 | 291 | notify_msg_ready (); |
dd118a07 | 292 | leave_crit (); |
ee78dc32 GV |
293 | |
294 | return (TRUE); | |
295 | } | |
296 | ||
7c69181b | 297 | BOOL |
fbd6baed | 298 | prepend_msg (W32Msg *lpmsg) |
7c69181b GV |
299 | { |
300 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
301 | ||
302 | if (!lpNew) | |
303 | return (FALSE); | |
304 | ||
72af86bd | 305 | memcpy (&lpNew->w32msg, lpmsg, sizeof (W32Msg)); |
7c69181b GV |
306 | |
307 | enter_crit (); | |
308 | ||
309 | nQueue++; | |
310 | lpNew->lpNext = lpHead; | |
311 | lpHead = lpNew; | |
0fda9b75 | 312 | notify_msg_ready (); |
7c69181b GV |
313 | leave_crit (); |
314 | ||
315 | return (TRUE); | |
316 | } | |
317 | ||
977c6479 EZ |
318 | /* Process all messages in the current thread's queue. Value is 1 if |
319 | one of these messages was WM_EMACS_FILENOTIFY, zero otherwise. */ | |
320 | int | |
b56ceb92 | 321 | drain_message_queue (void) |
716490f0 AI |
322 | { |
323 | MSG msg; | |
977c6479 EZ |
324 | int retval = 0; |
325 | ||
716490f0 AI |
326 | while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) |
327 | { | |
977c6479 EZ |
328 | if (msg.message == WM_EMACS_FILENOTIFY) |
329 | retval = 1; | |
716490f0 AI |
330 | TranslateMessage (&msg); |
331 | DispatchMessage (&msg); | |
332 | } | |
977c6479 | 333 | return retval; |
716490f0 AI |
334 | } |
335 | ||
fbd6baed | 336 | /* x_sync is a no-op on W32. */ |
ee78dc32 | 337 | void |
17a2cbbd | 338 | x_sync (struct frame *f) |
ee78dc32 GV |
339 | { |
340 | } |