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 GV |
21 | #include <stdio.h> |
22 | #include "lisp.h" | |
3e4731a3 | 23 | #include "keyboard.h" |
97aab3a2 | 24 | #include "frame.h" |
bd6bb544 GV |
25 | #include "charset.h" |
26 | #include "fontset.h" | |
ee78dc32 GV |
27 | #include "blockinput.h" |
28 | #include "w32term.h" | |
29 | #include "windowsx.h" | |
30 | ||
31 | #define myalloc(cb) GlobalAllocPtr (GPTR, cb) | |
32 | #define myfree(lp) GlobalFreePtr (lp) | |
33 | ||
dd118a07 | 34 | CRITICAL_SECTION critsect; |
ee78dc32 | 35 | extern HANDLE keyboard_handle; |
97aab3a2 | 36 | HANDLE input_available = NULL; |
1ce3dc2b | 37 | HANDLE interrupt_handle = NULL; |
ee78dc32 | 38 | |
177c0ea7 | 39 | void |
b56ceb92 | 40 | init_crit (void) |
ee78dc32 | 41 | { |
dd118a07 | 42 | InitializeCriticalSection (&critsect); |
ee78dc32 | 43 | |
97aab3a2 GV |
44 | /* For safety, input_available should only be reset by get_next_msg |
45 | when the input queue is empty, so make it a manual reset event. */ | |
46 | keyboard_handle = input_available = CreateEvent (NULL, TRUE, FALSE, NULL); | |
1ce3dc2b | 47 | |
04bf5b65 | 48 | /* interrupt_handle is signaled when quit (C-g) is detected, so that |
1ce3dc2b RS |
49 | blocking system calls can be interrupted. We make it a manual |
50 | reset event, so that if we should ever have multiple threads | |
51 | performing system calls, they will all be interrupted (I'm guessing | |
52 | that would the right response). Note that we use PulseEvent to | |
04bf5b65 | 53 | signal this event, so that it never remains signaled. */ |
1ce3dc2b | 54 | interrupt_handle = CreateEvent (NULL, TRUE, FALSE, NULL); |
ee78dc32 GV |
55 | } |
56 | ||
177c0ea7 | 57 | void |
b56ceb92 | 58 | delete_crit (void) |
ee78dc32 | 59 | { |
97aab3a2 GV |
60 | DeleteCriticalSection (&critsect); |
61 | ||
62 | if (input_available) | |
63 | { | |
64 | CloseHandle (input_available); | |
65 | input_available = NULL; | |
66 | } | |
1ce3dc2b RS |
67 | if (interrupt_handle) |
68 | { | |
69 | CloseHandle (interrupt_handle); | |
70 | interrupt_handle = NULL; | |
71 | } | |
72 | } | |
73 | ||
74 | void | |
b56ceb92 | 75 | signal_quit (void) |
1ce3dc2b | 76 | { |
04bf5b65 | 77 | /* Make sure this event never remains signaled; if the main thread |
1ce3dc2b RS |
78 | isn't in a blocking call, then this should do nothing. */ |
79 | PulseEvent (interrupt_handle); | |
d484dc55 GV |
80 | } |
81 | ||
97aab3a2 GV |
82 | void |
83 | select_palette (FRAME_PTR f, HDC hdc) | |
d484dc55 | 84 | { |
90f4a9f8 AI |
85 | struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f); |
86 | ||
87 | if (!display_info->has_palette) | |
88 | return; | |
89 | ||
90 | if (display_info->palette == 0) | |
a8370d72 | 91 | return; |
90f4a9f8 | 92 | |
fbd6baed GV |
93 | if (!NILP (Vw32_enable_palette)) |
94 | f->output_data.w32->old_palette = | |
90f4a9f8 | 95 | SelectPalette (hdc, display_info->palette, FALSE); |
97aab3a2 | 96 | else |
fbd6baed | 97 | f->output_data.w32->old_palette = NULL; |
97aab3a2 | 98 | |
1c2cc4ef | 99 | if (RealizePalette (hdc) != GDI_ERROR) |
97aab3a2 GV |
100 | { |
101 | Lisp_Object frame, framelist; | |
102 | FOR_EACH_FRAME (framelist, frame) | |
dd118a07 | 103 | { |
97aab3a2 | 104 | SET_FRAME_GARBAGED (XFRAME (frame)); |
dd118a07 | 105 | } |
97aab3a2 GV |
106 | } |
107 | } | |
108 | ||
109 | void | |
110 | deselect_palette (FRAME_PTR f, HDC hdc) | |
111 | { | |
fbd6baed GV |
112 | if (f->output_data.w32->old_palette) |
113 | SelectPalette (hdc, f->output_data.w32->old_palette, FALSE); | |
97aab3a2 GV |
114 | } |
115 | ||
116 | /* Get a DC for frame and select palette for drawing; force an update of | |
117 | all frames if palette's mapping changes. */ | |
118 | HDC | |
119 | get_frame_dc (FRAME_PTR f) | |
120 | { | |
121 | HDC hdc; | |
122 | ||
56c16321 | 123 | if (f->output_method != output_w32) |
1088b922 | 124 | emacs_abort (); |
56c16321 | 125 | |
97aab3a2 GV |
126 | enter_crit (); |
127 | ||
fbd6baed | 128 | hdc = GetDC (f->output_data.w32->window_desc); |
86d1db20 JR |
129 | |
130 | /* If this gets called during startup before the frame is valid, | |
131 | there is a chance of corrupting random data or crashing. */ | |
132 | if (hdc) | |
133 | select_palette (f, hdc); | |
97aab3a2 GV |
134 | |
135 | return hdc; | |
136 | } | |
137 | ||
138 | int | |
139 | release_frame_dc (FRAME_PTR f, HDC hdc) | |
140 | { | |
141 | int ret; | |
142 | ||
143 | deselect_palette (f, hdc); | |
fbd6baed | 144 | ret = ReleaseDC (f->output_data.w32->window_desc, hdc); |
97aab3a2 GV |
145 | |
146 | leave_crit (); | |
147 | ||
148 | return ret; | |
ee78dc32 GV |
149 | } |
150 | ||
151 | typedef struct int_msg | |
152 | { | |
fbd6baed | 153 | W32Msg w32msg; |
ee78dc32 GV |
154 | struct int_msg *lpNext; |
155 | } int_msg; | |
156 | ||
157 | int_msg *lpHead = NULL; | |
158 | int_msg *lpTail = NULL; | |
159 | int nQueue = 0; | |
160 | ||
177c0ea7 | 161 | BOOL |
b56ceb92 | 162 | get_next_msg (W32Msg * lpmsg, BOOL bWait) |
ee78dc32 GV |
163 | { |
164 | BOOL bRet = FALSE; | |
177c0ea7 | 165 | |
dd118a07 | 166 | enter_crit (); |
177c0ea7 | 167 | |
ee78dc32 | 168 | /* The while loop takes care of multiple sets */ |
177c0ea7 | 169 | |
ee78dc32 GV |
170 | while (!nQueue && bWait) |
171 | { | |
dd118a07 | 172 | leave_crit (); |
97aab3a2 | 173 | WaitForSingleObject (input_available, INFINITE); |
dd118a07 | 174 | enter_crit (); |
ee78dc32 | 175 | } |
177c0ea7 | 176 | |
ee78dc32 GV |
177 | if (nQueue) |
178 | { | |
72af86bd | 179 | memcpy (lpmsg, &lpHead->w32msg, sizeof (W32Msg)); |
ee78dc32 GV |
180 | |
181 | { | |
182 | int_msg * lpCur = lpHead; | |
177c0ea7 | 183 | |
ee78dc32 | 184 | lpHead = lpHead->lpNext; |
177c0ea7 | 185 | |
ee78dc32 GV |
186 | myfree (lpCur); |
187 | } | |
188 | ||
189 | nQueue--; | |
e1dbe924 | 190 | /* Consolidate WM_PAINT messages to optimize redrawing. */ |
b668cc18 JR |
191 | if (lpmsg->msg.message == WM_PAINT && nQueue) |
192 | { | |
193 | int_msg * lpCur = lpHead; | |
194 | int_msg * lpPrev = NULL; | |
195 | int_msg * lpNext = NULL; | |
196 | ||
197 | while (lpCur && nQueue) | |
198 | { | |
199 | lpNext = lpCur->lpNext; | |
200 | if (lpCur->w32msg.msg.message == WM_PAINT) | |
201 | { | |
202 | /* Remove this message from the queue. */ | |
203 | if (lpPrev) | |
204 | lpPrev->lpNext = lpNext; | |
205 | else | |
206 | lpHead = lpNext; | |
207 | ||
208 | if (lpCur == lpTail) | |
209 | lpTail = lpPrev; | |
210 | ||
211 | /* Adjust clip rectangle to cover both. */ | |
212 | if (!UnionRect (&(lpmsg->rect), &(lpmsg->rect), | |
213 | &(lpCur->w32msg.rect))) | |
214 | { | |
ed3751c8 | 215 | SetRectEmpty (&(lpmsg->rect)); |
b668cc18 JR |
216 | } |
217 | ||
218 | myfree (lpCur); | |
219 | ||
220 | nQueue--; | |
221 | ||
222 | lpCur = lpNext; | |
223 | } | |
224 | else | |
225 | { | |
226 | lpPrev = lpCur; | |
227 | lpCur = lpNext; | |
228 | } | |
229 | } | |
230 | } | |
ee78dc32 GV |
231 | |
232 | bRet = TRUE; | |
233 | } | |
97aab3a2 GV |
234 | |
235 | if (nQueue == 0) | |
236 | ResetEvent (input_available); | |
177c0ea7 | 237 | |
dd118a07 | 238 | leave_crit (); |
177c0ea7 | 239 | |
ee78dc32 GV |
240 | return (bRet); |
241 | } | |
242 | ||
177c0ea7 | 243 | BOOL |
b56ceb92 | 244 | post_msg (W32Msg * lpmsg) |
ee78dc32 GV |
245 | { |
246 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
247 | ||
97aab3a2 GV |
248 | if (!lpNew) |
249 | return (FALSE); | |
ee78dc32 | 250 | |
72af86bd | 251 | memcpy (&lpNew->w32msg, lpmsg, sizeof (W32Msg)); |
ee78dc32 GV |
252 | lpNew->lpNext = NULL; |
253 | ||
dd118a07 | 254 | enter_crit (); |
ee78dc32 GV |
255 | |
256 | if (nQueue++) | |
dd118a07 GV |
257 | { |
258 | lpTail->lpNext = lpNew; | |
259 | } | |
177c0ea7 | 260 | else |
dd118a07 GV |
261 | { |
262 | lpHead = lpNew; | |
dd118a07 | 263 | } |
ee78dc32 GV |
264 | |
265 | lpTail = lpNew; | |
97aab3a2 | 266 | SetEvent (input_available); |
177c0ea7 | 267 | |
dd118a07 | 268 | leave_crit (); |
ee78dc32 GV |
269 | |
270 | return (TRUE); | |
271 | } | |
272 | ||
7c69181b | 273 | BOOL |
fbd6baed | 274 | prepend_msg (W32Msg *lpmsg) |
7c69181b GV |
275 | { |
276 | int_msg * lpNew = (int_msg *) myalloc (sizeof (int_msg)); | |
277 | ||
278 | if (!lpNew) | |
279 | return (FALSE); | |
280 | ||
72af86bd | 281 | memcpy (&lpNew->w32msg, lpmsg, sizeof (W32Msg)); |
7c69181b GV |
282 | |
283 | enter_crit (); | |
284 | ||
285 | nQueue++; | |
286 | lpNew->lpNext = lpHead; | |
287 | lpHead = lpNew; | |
288 | ||
289 | leave_crit (); | |
290 | ||
291 | return (TRUE); | |
292 | } | |
293 | ||
716490f0 AI |
294 | /* Process all messages in the current thread's queue. */ |
295 | void | |
b56ceb92 | 296 | drain_message_queue (void) |
716490f0 AI |
297 | { |
298 | MSG msg; | |
299 | while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) | |
300 | { | |
301 | TranslateMessage (&msg); | |
302 | DispatchMessage (&msg); | |
303 | } | |
304 | } | |
305 | ||
fbd6baed | 306 | /* x_sync is a no-op on W32. */ |
ee78dc32 | 307 | void |
17a2cbbd | 308 | x_sync (struct frame *f) |
ee78dc32 GV |
309 | { |
310 | } |