Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
2 | pj | 1 | /* |
2 | * Project: S.Ha.R.K. |
||
3 | * |
||
4 | * Coordinators: |
||
5 | * Giorgio Buttazzo <giorgio@sssup.it> |
||
6 | * Paolo Gai <pj@gandalf.sssup.it> |
||
7 | * |
||
8 | * Authors : |
||
9 | * Paolo Gai <pj@gandalf.sssup.it> |
||
10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
||
11 | * Luca Abeni <luca@gandalf.sssup.it> |
||
12 | * (see the web pages for full authors list) |
||
13 | * |
||
14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
15 | * |
||
16 | * http://www.sssup.it |
||
17 | * http://retis.sssup.it |
||
18 | * http://shark.sssup.it |
||
19 | */ |
||
20 | |||
21 | /** |
||
22 | ------------ |
||
23 | CVS : $Id: mcurtxt.c,v 1.1.1.1 2002-03-29 14:12:49 pj Exp $ |
||
24 | |||
25 | File: $File$ |
||
26 | Revision: $Revision: 1.1.1.1 $ |
||
27 | Last update: $Date: 2002-03-29 14:12:49 $ |
||
28 | ------------ |
||
29 | |||
30 | Author: Massimiliano Giorgi |
||
31 | Date: 24/Giu/99 |
||
32 | |||
33 | **/ |
||
34 | |||
35 | /* |
||
36 | * Copyright (C) 2000 Paolo Gai |
||
37 | * |
||
38 | * This program is free software; you can redistribute it and/or modify |
||
39 | * it under the terms of the GNU General Public License as published by |
||
40 | * the Free Software Foundation; either version 2 of the License, or |
||
41 | * (at your option) any later version. |
||
42 | * |
||
43 | * This program is distributed in the hope that it will be useful, |
||
44 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
45 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
46 | * GNU General Public License for more details. |
||
47 | * |
||
48 | * You should have received a copy of the GNU General Public License |
||
49 | * along with this program; if not, write to the Free Software |
||
50 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
51 | * |
||
52 | */ |
||
53 | |||
54 | /* |
||
55 | * |
||
56 | * Auto Pointer management |
||
57 | * |
||
58 | */ |
||
59 | |||
60 | #include <kernel/kern.h> |
||
61 | //#include <sys/sys.h> |
||
62 | //#include <sys/vm.h> |
||
63 | #include <drivers/mouse.h> |
||
64 | //#include <cons.h> |
||
65 | #include "_mouse.h" |
||
66 | #include <modules/sem.h> |
||
67 | |||
68 | /* these are the actual mouse coordinates (defined into mouse.c) */ |
||
69 | extern short int mouse_x; |
||
70 | extern short int mouse_y; |
||
71 | |||
72 | /* these variables are managed by this module but MUST be declared |
||
73 | * into mouse.c to prevent implicit inclusion of this module |
||
74 | * when a user link the mouse library |
||
75 | */ |
||
76 | |||
77 | extern MOUSE_HANDLER mouse_handler; |
||
78 | extern MOUSE_HANDLER user_mouse_handler; |
||
79 | extern int autocursormode; |
||
80 | |||
81 | /* a mutex semaphore */ |
||
82 | static sem_t mutex=-1; |
||
83 | |||
84 | /* |
||
85 | * |
||
86 | * autocursor mouse handler |
||
87 | * |
||
88 | */ |
||
89 | |||
90 | /* >=0 hide cursor; <0 show cursor */ |
||
91 | static int mouse_cursor_state=-1; |
||
92 | |||
93 | /* saved mouse_position */ |
||
94 | static int saved_x,saved_y; |
||
95 | |||
96 | static void dummy(int x,int y) |
||
97 | {} |
||
98 | |||
99 | static void (*show_cursor)(int x, int y)=dummy; |
||
100 | static void (*restore_cursor)(int x, int y)=dummy; |
||
101 | |||
102 | /* those are the 4 mouse handlers */ |
||
103 | /* AUTOOFF -> call the user handler with no mouse displayed */ |
||
104 | /* WITHOUTSEM -> does not use a mutex semaphore */ |
||
105 | |||
106 | /* with no flags */ |
||
107 | static void autocursor_mouse_handler_1(MOUSE_EVT *event) |
||
108 | { |
||
109 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
||
110 | |||
111 | sem_wait(&mutex); |
||
112 | if (mouse_cursor_state<0&&(event->x!=saved_x||event->y!=saved_y)) { |
||
113 | restore_cursor(saved_x,saved_y); |
||
114 | saved_x=event->x; |
||
115 | saved_y=event->y; |
||
116 | show_cursor(saved_x,saved_y); |
||
117 | } |
||
118 | sem_post(&mutex); |
||
119 | } |
||
120 | |||
121 | /* with WITHOUTSEM flag*/ |
||
122 | static void autocursor_mouse_handler_2(MOUSE_EVT *event) |
||
123 | { |
||
124 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
||
125 | |||
126 | if (mouse_cursor_state<0&&(event->x!=saved_x||event->y!=saved_y)) { |
||
127 | restore_cursor(saved_x,saved_y); |
||
128 | saved_x=event->x; |
||
129 | saved_y=event->y; |
||
130 | show_cursor(saved_x,saved_y); |
||
131 | } |
||
132 | } |
||
133 | |||
134 | /* with AUTOOFF flag*/ |
||
135 | static void autocursor_mouse_handler_3(MOUSE_EVT *event) |
||
136 | { |
||
137 | sem_wait(&mutex); |
||
138 | |||
139 | if (mouse_cursor_state<0) { |
||
140 | restore_cursor(saved_x,saved_y); |
||
141 | saved_x=event->x; |
||
142 | saved_y=event->y; |
||
143 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
||
144 | show_cursor(saved_x,saved_y); |
||
145 | } else |
||
146 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
||
147 | |||
148 | sem_post(&mutex); |
||
149 | } |
||
150 | |||
151 | /* with WITHOUTSEM & AUTOOFF flags */ |
||
152 | static void autocursor_mouse_handler_4(MOUSE_EVT *event) |
||
153 | { |
||
154 | if (mouse_cursor_state<0) { |
||
155 | restore_cursor(saved_x,saved_y); |
||
156 | saved_x=event->x; |
||
157 | saved_y=event->y; |
||
158 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
||
159 | show_cursor(saved_x,saved_y); |
||
160 | } else |
||
161 | if (user_mouse_handler!=NULL) user_mouse_handler(event); |
||
162 | } |
||
163 | |||
164 | /* -------------- |
||
165 | * TXT management |
||
166 | * -------------- |
||
167 | */ |
||
168 | |||
169 | /* text cursor shape */ |
||
170 | #define DEFAULTTXTSHAPE 0x7700ffff |
||
171 | static DWORD saved_txtshape=DEFAULTTXTSHAPE; |
||
172 | static BYTE attr_andmask,attr_xormask; |
||
173 | static BYTE c_andmask,c_xormask; |
||
174 | /* saved values */ |
||
175 | static BYTE saved_attr,saved_c; |
||
176 | |||
177 | /* show txt cursor */ |
||
178 | void show_txt_cursor(int x, int y) |
||
179 | { |
||
180 | int attr,c; |
||
181 | getc_xy(x,y,&saved_attr,&saved_c); |
||
182 | attr=(saved_attr&attr_andmask)^attr_xormask; |
||
183 | c=(saved_c&c_andmask)^c_xormask; |
||
184 | putc_xy(x,y,attr,c); |
||
185 | } |
||
186 | |||
187 | /* restore txt cursor */ |
||
188 | static void restore_txt_cursor(int x, int y) |
||
189 | { |
||
190 | putc_xy(x,y,saved_attr,saved_c); |
||
191 | } |
||
192 | |||
193 | /* define text shape */ |
||
194 | int mouse_txtshape(DWORD img) |
||
195 | { |
||
196 | int cond; |
||
197 | if (img==DEFAULT) img=DEFAULTTXTSHAPE; |
||
198 | |||
199 | cond=( |
||
200 | (autocursormode&STATUSMASK)==ENABLE |
||
201 | && |
||
202 | (autocursormode&TXTCURSOR)==TXTCURSOR |
||
203 | ); |
||
204 | |||
205 | if (cond) |
||
206 | restore_txt_cursor(saved_x,saved_y); |
||
207 | |||
208 | saved_txtshape=img; |
||
209 | c_andmask=img&0xff; |
||
210 | attr_andmask=(img&0xff00)>>8; |
||
211 | c_xormask=(img&0xff0000)>>16; |
||
212 | attr_xormask=(img&0xff000000)>>24; |
||
213 | |||
214 | if (cond) |
||
215 | show_txt_cursor(saved_x,saved_y); |
||
216 | |||
217 | return 0; |
||
218 | } |
||
219 | |||
220 | /* |
||
221 | * User interface to autocursor functions |
||
222 | */ |
||
223 | |||
224 | |||
225 | /* display the cursor */ |
||
226 | |||
227 | #define MOUSE_ON() { \ |
||
228 | mouse_cursor_state--; \ |
||
229 | if (mouse_cursor_state==-1) { \ |
||
230 | saved_x=mouse_x; \ |
||
231 | saved_y=mouse_y; \ |
||
232 | show_cursor(saved_x,saved_y); \ |
||
233 | } \ |
||
234 | } |
||
235 | |||
236 | static void mouse_on_sem(void) |
||
237 | { |
||
238 | sem_wait(&mutex); |
||
239 | MOUSE_ON(); |
||
240 | sem_post(&mutex); |
||
241 | } |
||
242 | |||
243 | static void mouse_on_nosem(void) |
||
244 | { |
||
245 | MOUSE_ON(); |
||
246 | } |
||
247 | |||
248 | void (*mouse_on)(void)=mouse_on_nosem; |
||
249 | |||
250 | /* hide the cursor */ |
||
251 | |||
252 | #define MOUSE_OFF() { \ |
||
253 | mouse_cursor_state++; \ |
||
254 | if (mouse_cursor_state==0) restore_cursor(saved_x,saved_y); \ |
||
255 | } |
||
256 | |||
257 | void mouse_off_sem(void) |
||
258 | { |
||
259 | sem_wait(&mutex); |
||
260 | MOUSE_OFF(); |
||
261 | sem_post(&mutex); |
||
262 | } |
||
263 | |||
264 | void mouse_off_nosem(void) |
||
265 | { |
||
266 | MOUSE_OFF(); |
||
267 | } |
||
268 | |||
269 | void (*mouse_off)(void)=mouse_off_nosem; |
||
270 | |||
271 | static MOUSE_HANDLER wich_handler(int cmd) |
||
272 | { |
||
273 | if (((cmd&WITHOUTSEM)==WITHOUTSEM)&&((cmd&AUTOOFF)==AUTOOFF)) |
||
274 | return autocursor_mouse_handler_4; |
||
275 | else if ((cmd&WITHOUTSEM)==WITHOUTSEM) |
||
276 | return autocursor_mouse_handler_2; |
||
277 | else if ((cmd&AUTOOFF)==AUTOOFF) |
||
278 | return autocursor_mouse_handler_3; |
||
279 | return autocursor_mouse_handler_1; |
||
280 | } |
||
281 | |||
282 | int mouse_txtcursor(int cmd) |
||
283 | { |
||
284 | mouse_txtshape(saved_txtshape); |
||
285 | return _mouse_cursor_init(cmd|TXTCURSOR,show_txt_cursor,restore_txt_cursor); |
||
286 | } |
||
287 | |||
288 | /**/ |
||
289 | |||
290 | int _mouse_cursor_init(int cmd, |
||
291 | void(*my_show_cursor)(int,int), |
||
292 | void(*my_restore_cursor)(int,int) |
||
293 | ) |
||
294 | { |
||
295 | if (mutex==-1) { |
||
296 | if (sem_init(&mutex,0,1) == -1) |
||
297 | return -1; |
||
298 | } |
||
299 | |||
300 | switch (cmd&STATUSMASK) { |
||
301 | case DISABLE: |
||
302 | mouse_handler=user_mouse_handler; |
||
303 | restore_cursor(saved_x,saved_y); |
||
304 | show_cursor=dummy; |
||
305 | restore_cursor=dummy; |
||
306 | break; |
||
307 | case ENABLE: |
||
308 | restore_cursor(saved_x,saved_y); |
||
309 | restore_cursor=my_restore_cursor; |
||
310 | show_cursor=my_show_cursor; |
||
311 | if ((autocursormode&STATUSMASK)==DISABLE) { |
||
312 | user_mouse_handler=mouse_handler; |
||
313 | mouse_handler=wich_handler(cmd); |
||
314 | } |
||
315 | mouse_cursor_state=0; |
||
316 | break; |
||
317 | default: |
||
318 | return -1; |
||
319 | |||
320 | } |
||
321 | autocursormode=cmd; |
||
322 | |||
323 | if ((autocursormode&STATUSMASK)==ENABLE) { |
||
324 | if ((cmd&WITHOUTSEM)==WITHOUTSEM) { |
||
325 | mouse_on=mouse_on_nosem; |
||
326 | mouse_off=mouse_off_nosem; |
||
327 | } else { |
||
328 | mouse_on=mouse_on_sem; |
||
329 | mouse_off=mouse_off_sem; |
||
330 | } |
||
331 | } |
||
332 | |||
333 | return 0; |
||
334 | } |
||
335 | |||
336 | void _mouse_getsavedposition(int *xptr, int *yptr) |
||
337 | { |
||
338 | *xptr=saved_x; |
||
339 | *yptr=saved_y; |
||
340 | } |