Commit | Line | Data |
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6ed8eeff | 1 | /* Parameters and display hooks for terminal devices. |
429ab54e | 2 | Copyright (C) 1985, 1986, 1993, 1994, 2001, 2002, 2003, 2004, |
5df4f04c | 3 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
80856e74 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
b9b1cc14 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
80856e74 | 8 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
80856e74 JB |
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 | |
b9b1cc14 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
80856e74 | 19 | |
ec3f896c JB |
20 | \f |
21 | /* Miscellanea. */ | |
22 | ||
6820433e GM |
23 | struct glyph; |
24 | struct frame; | |
ec3f896c | 25 | \f |
80856e74 | 26 | |
a3c87d4e JB |
27 | enum scroll_bar_part { |
28 | scroll_bar_above_handle, | |
29 | scroll_bar_handle, | |
33d5f42a RS |
30 | scroll_bar_below_handle, |
31 | scroll_bar_up_arrow, | |
6820433e GM |
32 | scroll_bar_down_arrow, |
33 | scroll_bar_to_top, | |
34 | scroll_bar_to_bottom, | |
57207f1e SM |
35 | scroll_bar_end_scroll, |
36 | scroll_bar_move_ratio | |
20a558dc JB |
37 | }; |
38 | ||
9416ae44 JD |
39 | /* If the value of the frame parameter changed, whis hook is called. |
40 | For example, if going from fullscreen to not fullscreen this hook | |
41 | may do something OS dependent, like extended window manager hints on X11. */ | |
42 | extern void (*fullscreen_hook) P_ ((struct frame *f)); | |
43 | ||
ec3f896c JB |
44 | \f |
45 | /* Input queue declarations and hooks. */ | |
20a558dc | 46 | |
80856e74 | 47 | /* Expedient hack: only provide the below definitions to files that |
e0f24100 | 48 | are prepared to handle lispy things. CONSP is defined if lisp.h |
265a9e55 | 49 | has been included before this file. */ |
23c6349c | 50 | #ifdef CONSP |
80856e74 | 51 | |
351c638e RS |
52 | enum event_kind |
53 | { | |
3b8f9651 | 54 | NO_EVENT, /* nothing happened. This should never |
80856e74 | 55 | actually appear in the event queue. */ |
f05ddc05 | 56 | |
3b8f9651 | 57 | ASCII_KEYSTROKE_EVENT, /* The ASCII code is in .code, perhaps |
f05ddc05 JB |
58 | with modifiers applied. |
59 | .modifiers holds the state of the | |
60 | modifier keys. | |
ec3f896c JB |
61 | .frame_or_window is the frame in |
62 | which the key was typed. | |
265a9e55 JB |
63 | .timestamp gives a timestamp (in |
64 | milliseconds) for the keystroke. */ | |
3b8f9651 | 65 | MULTIBYTE_CHAR_KEYSTROKE_EVENT, /* The multibyte char code is in .code, |
4ff939ad KH |
66 | perhaps with modifiers applied. |
67 | The others are the same as | |
7273faa1 | 68 | ASCII_KEYSTROKE_EVENT. */ |
3b8f9651 | 69 | NON_ASCII_KEYSTROKE_EVENT, /* .code is a number identifying the |
80856e74 JB |
70 | function key. A code N represents |
71 | a key whose name is | |
72 | function_key_names[N]; function_key_names | |
73 | is a table in keyboard.c to which you | |
74 | should feel free to add missing keys. | |
75 | .modifiers holds the state of the | |
62c07cc7 | 76 | modifier keys. |
ec3f896c JB |
77 | .frame_or_window is the frame in |
78 | which the key was typed. | |
265a9e55 JB |
79 | .timestamp gives a timestamp (in |
80 | milliseconds) for the keystroke. */ | |
3b8f9651 PJ |
81 | TIMER_EVENT, /* A timer fired. */ |
82 | MOUSE_CLICK_EVENT, /* The button number is in .code; it must | |
a1867fb1 JB |
83 | be >= 0 and < NUM_MOUSE_BUTTONS, defined |
84 | below. | |
80856e74 JB |
85 | .modifiers holds the state of the |
86 | modifier keys. | |
87 | .x and .y give the mouse position, | |
1113d9db | 88 | in characters, within the window. |
ec3f896c JB |
89 | .frame_or_window gives the frame |
90 | the mouse click occurred in. | |
80856e74 JB |
91 | .timestamp gives a timestamp (in |
92 | milliseconds) for the click. */ | |
3ecad19e JR |
93 | WHEEL_EVENT, /* A wheel event is generated by a |
94 | wheel on a mouse (e.g., MS | |
95 | Intellimouse). | |
96 | .modifiers holds the rotate | |
97 | direction (up or down), and the | |
98 | state of the modifier keys. | |
99 | .x and .y give the mouse position, | |
100 | in characters, within the window. | |
101 | .frame_or_window gives the frame | |
102 | the wheel event occurred in. | |
103 | .timestamp gives a timestamp (in | |
104 | milliseconds) for the event. */ | |
bce179b5 JR |
105 | HORIZ_WHEEL_EVENT, /* A wheel event generated by a second |
106 | horizontal wheel that is present on some | |
107 | mice. See WHEEL_EVENT. */ | |
9e2a2647 | 108 | #if defined (WINDOWSNT) |
9c5501d9 YM |
109 | LANGUAGE_CHANGE_EVENT, /* A LANGUAGE_CHANGE_EVENT is |
110 | generated on WINDOWSNT or Mac OS | |
111 | when the keyboard layout or input | |
112 | language is changed by the | |
dba46b7c | 113 | user. */ |
ab8f1008 | 114 | #endif |
3b8f9651 | 115 | SCROLL_BAR_CLICK_EVENT, /* .code gives the number of the mouse button |
20a558dc JB |
116 | that was clicked. |
117 | .modifiers holds the state of the modifier | |
118 | keys. | |
80856e74 | 119 | .part is a lisp symbol indicating which |
a3c87d4e | 120 | part of the scroll bar got clicked. |
20a558dc JB |
121 | .x gives the distance from the start of the |
122 | scroll bar of the click; .y gives the total | |
123 | length of the scroll bar. | |
ec3f896c | 124 | .frame_or_window gives the window |
a3c87d4e | 125 | whose scroll bar was clicked in. |
80856e74 JB |
126 | .timestamp gives a timestamp (in |
127 | milliseconds) for the click. */ | |
3b8f9651 | 128 | SELECTION_REQUEST_EVENT, /* Another X client wants a selection from us. |
0f8dad45 | 129 | See `struct selection_input_event'. */ |
3b8f9651 PJ |
130 | SELECTION_CLEAR_EVENT, /* Another X client cleared our selection. */ |
131 | BUFFER_SWITCH_EVENT, /* A process filter has switched buffers. */ | |
132 | DELETE_WINDOW_EVENT, /* An X client said "delete this window". */ | |
4d92e48d | 133 | MENU_BAR_EVENT, /* An event generated by the menu bar. |
b90afe71 | 134 | The frame_or_window field's cdr holds the |
765a05bc RS |
135 | Lisp-level event value. |
136 | (Only the toolkit version uses these.) */ | |
3b8f9651 PJ |
137 | ICONIFY_EVENT, /* An X client iconified this window. */ |
138 | DEICONIFY_EVENT, /* An X client deiconified this window. */ | |
139 | MENU_BAR_ACTIVATE_EVENT, /* A button press in the menu bar | |
c8b5ebed | 140 | (toolkit version only). */ |
3b8f9651 | 141 | DRAG_N_DROP_EVENT, /* A drag-n-drop event is generated when |
523812cd RS |
142 | files selected outside of Emacs are dropped |
143 | onto an Emacs window. | |
177c0ea7 | 144 | .modifiers holds the state of the |
523812cd RS |
145 | modifier keys. |
146 | .x and .y give the mouse position, | |
147 | in characters, within the window. | |
bf0f0659 YM |
148 | .frame_or_window is the frame in |
149 | which the drop was made. | |
150 | .arg is a platform-dependent | |
151 | representation of the dropped items. | |
523812cd RS |
152 | .timestamp gives a timestamp (in |
153 | milliseconds) for the click. */ | |
4d92e48d GM |
154 | USER_SIGNAL_EVENT, /* A user signal. |
155 | code is a number identifying it, | |
6820433e GM |
156 | index into lispy_user_signals. */ |
157 | ||
4d92e48d GM |
158 | /* Help events. Member `frame_or_window' of the input_event is the |
159 | frame on which the event occurred, and member `arg' contains | |
160 | the help to show. */ | |
6820433e GM |
161 | HELP_EVENT, |
162 | ||
4d92e48d GM |
163 | /* An event from a tool-bar. Member `arg' of the input event |
164 | contains the tool-bar item selected. If `frame_or_window' | |
165 | and `arg' are equal, this is a prefix event. */ | |
0f98c4c2 GM |
166 | TOOL_BAR_EVENT, |
167 | ||
168 | /* Queued from XTread_socket on FocusIn events. Translated into | |
169 | `switch-frame' events in kbd_buffer_get_event, if necessary. */ | |
408b2bfb JD |
170 | FOCUS_IN_EVENT, |
171 | ||
827b15c6 PJ |
172 | /* Generated when mouse moves over window not currently selected. */ |
173 | SELECT_WINDOW_EVENT, | |
174 | ||
408b2bfb JD |
175 | /* Queued from XTread_socket when session manager sends |
176 | save yourself before shutdown. */ | |
fba2cc7f | 177 | SAVE_SESSION_EVENT |
0f8dad45 | 178 | |
7e5a23bd | 179 | #ifdef HAVE_GPM |
1af74d06 | 180 | , GPM_CLICK_EVENT |
b2b25916 JR |
181 | #endif |
182 | ||
033b73e2 MA |
183 | #ifdef HAVE_DBUS |
184 | , DBUS_EVENT | |
185 | #endif | |
186 | ||
637fa988 JD |
187 | , CONFIG_CHANGED_EVENT |
188 | ||
b2b25916 JR |
189 | #ifdef WINDOWSNT |
190 | /* Generated when an APPCOMMAND event is received, in response to | |
191 | Multimedia or Internet buttons on some keyboards. | |
192 | Such keys are available as normal function keys on X through the | |
193 | Xkeyboard extension. | |
194 | On Windows, some of them get mapped to normal function key events, | |
195 | but others need to be handled by APPCOMMAND. Handling them all as | |
196 | APPCOMMAND events means they can be disabled | |
197 | (w32-pass-multimedia-buttons-to-system), important on Windows since | |
198 | the system never sees these keys if Emacs claims to handle them. | |
199 | On X, the window manager seems to grab the keys it wants | |
200 | first, so this is not a problem there. */ | |
201 | , MULTIMEDIA_KEY_EVENT | |
0f8dad45 | 202 | #endif |
8612b71a AR |
203 | |
204 | #ifdef HAVE_NS | |
205 | /* Generated when native multi-keystroke input method is used to modify | |
206 | tentative or indicative text display. */ | |
207 | , NS_TEXT_EVENT | |
e76df1c0 DR |
208 | /* Non-key system events (e.g. application menu events) */ |
209 | , NS_NONKEY_EVENT | |
8612b71a AR |
210 | #endif |
211 | ||
351c638e RS |
212 | }; |
213 | ||
3b8f9651 PJ |
214 | /* If a struct input_event has a kind which is SELECTION_REQUEST_EVENT |
215 | or SELECTION_CLEAR_EVENT, then its contents are really described | |
0f8dad45 | 216 | by `struct selection_input_event'; see xterm.h. */ |
351c638e RS |
217 | |
218 | /* The keyboard input buffer is an array of these structures. Each one | |
219 | represents some sort of input event - a keystroke, a mouse click, or | |
220 | a window system event. These get turned into their lispy forms when | |
221 | they are removed from the event queue. */ | |
222 | ||
f879067d RS |
223 | struct input_event |
224 | { | |
351c638e | 225 | /* What kind of event was this? */ |
a9dff54b | 226 | enum event_kind kind; |
177c0ea7 | 227 | |
3b8f9651 PJ |
228 | /* For an ASCII_KEYSTROKE_EVENT and MULTIBYTE_CHAR_KEYSTROKE_EVENT, |
229 | this is the character. | |
230 | For a NON_ASCII_KEYSTROKE_EVENT, this is the keysym code. | |
9257d374 | 231 | For a mouse event, this is the button number. */ |
ab8f1008 | 232 | /* In WindowsNT, for a mouse wheel event, this is the delta. */ |
653dfe64 | 233 | int code; |
a3c87d4e | 234 | enum scroll_bar_part part; |
ec3f896c | 235 | |
46cfcdb4 RS |
236 | int modifiers; /* See enum below for interpretation. */ |
237 | ||
238 | Lisp_Object x, y; | |
239 | unsigned long timestamp; | |
240 | ||
f879067d | 241 | /* This is padding just to put the frame_or_window field |
0f8dad45 | 242 | past the size of struct selection_input_event. */ |
f879067d RS |
243 | int *padding[2]; |
244 | ||
ec3f896c JB |
245 | /* This field is copied into a vector while the event is in the queue, |
246 | so that garbage collections won't kill it. */ | |
b90afe71 KH |
247 | /* In a menu_bar_event, this is a cons cell whose car is the frame |
248 | and whose cdr is the Lisp object that is the event's value. */ | |
46cfcdb4 RS |
249 | /* This field is last so that struct selection_input_event |
250 | does not overlap with it. */ | |
ec3f896c | 251 | Lisp_Object frame_or_window; |
4d92e48d GM |
252 | |
253 | /* Additional event argument. This is used for TOOL_BAR_EVENTs and | |
254 | HELP_EVENTs and avoids calling Fcons during signal handling. */ | |
255 | Lisp_Object arg; | |
80856e74 | 256 | }; |
ec5d8db7 | 257 | |
5400da8f SM |
258 | #define EVENT_INIT(event) bzero (&(event), sizeof (struct input_event)) |
259 | ||
21cec071 JB |
260 | /* Bits in the modifiers member of the input_event structure. |
261 | Note that reorder_modifiers assumes that the bits are in canonical | |
177c0ea7 | 262 | order. |
a1867fb1 JB |
263 | |
264 | The modifiers applied to mouse clicks are rather ornate. The | |
265 | window-system-specific code should store mouse clicks with | |
45288343 JB |
266 | up_modifier or down_modifier set. Having an explicit down modifier |
267 | simplifies some of window-system-independent code; without it, the | |
268 | code would have to recognize down events by checking if the event | |
269 | is a mouse click lacking the click and drag modifiers. | |
270 | ||
271 | The window-system independent code turns all up_modifier events | |
fbcd35bd JB |
272 | bits into drag_modifier, click_modifier, double_modifier, or |
273 | triple_modifier events. The click_modifier has no written | |
274 | representation in the names of the symbols used as event heads, | |
275 | but it does appear in the Qevent_symbol_components property of the | |
276 | event heads. */ | |
80856e74 | 277 | enum { |
a1867fb1 JB |
278 | up_modifier = 1, /* Only used on mouse buttons - always |
279 | turned into a click or a drag modifier | |
280 | before lisp code sees the event. */ | |
d82222e1 JB |
281 | down_modifier = 2, /* Only used on mouse buttons. */ |
282 | drag_modifier = 4, /* This is never used in the event | |
a1867fb1 JB |
283 | queue; it's only used internally by |
284 | the window-system-independent code. */ | |
d82222e1 | 285 | click_modifier= 8, /* See drag_modifier. */ |
fbcd35bd JB |
286 | double_modifier= 16, /* See drag_modifier. */ |
287 | triple_modifier= 32, /* See drag_modifier. */ | |
d82222e1 JB |
288 | |
289 | /* The next four modifier bits are used also in keyboard events at | |
290 | the Lisp level. | |
291 | ||
292 | It's probably not the greatest idea to use the 2^23 bit for any | |
293 | modifier. It may or may not be the sign bit, depending on | |
294 | VALBITS, so using it to represent a modifier key means that | |
295 | characters thus modified have different integer equivalents | |
296 | depending on the architecture they're running on. Oh, and | |
297 | applying XINT to a character whose 2^23 bit is set sign-extends | |
298 | it, so you get a bunch of bits in the mask you didn't want. | |
299 | ||
300 | The CHAR_ macros are defined in lisp.h. */ | |
301 | alt_modifier = CHAR_ALT, /* Under X, the XK_Alt_[LR] keysyms. */ | |
302 | super_modifier= CHAR_SUPER, /* Under X, the XK_Super_[LR] keysyms. */ | |
303 | hyper_modifier= CHAR_HYPER, /* Under X, the XK_Hyper_[LR] keysyms. */ | |
304 | shift_modifier= CHAR_SHIFT, | |
305 | ctrl_modifier = CHAR_CTL, | |
6cd195e2 | 306 | meta_modifier = CHAR_META /* Under X, the XK_Meta_[LR] keysyms. */ |
80856e74 JB |
307 | }; |
308 | ||
7e5a23bd | 309 | #ifdef HAVE_GPM |
d036ccf4 | 310 | #include <gpm.h> |
7be1c21a | 311 | extern int handle_one_term_event (struct tty_display_info *, Gpm_Event *, struct input_event *); |
b2d1ffb1 | 312 | extern void term_mouse_moveto (int, int); |
d036ccf4 | 313 | |
71f44e7a SM |
314 | /* The device for which we have enabled gpm support. */ |
315 | extern struct tty_display_info *gpm_tty; | |
7be1c21a MB |
316 | #endif |
317 | ||
daf01701 | 318 | #endif /* CONSP */ |
ab5796a9 | 319 | |
428a555e | 320 | \f |
edfda783 AR |
321 | struct ns_display_info; |
322 | struct x_display_info; | |
80ca7302 DN |
323 | struct w32_display_info; |
324 | ||
6ed8eeff KL |
325 | /* Terminal-local parameters. */ |
326 | struct terminal | |
428a555e | 327 | { |
14fe7b53 EZ |
328 | /* This is for Lisp; the terminal code does not refer to it. */ |
329 | struct vectorlike_header header; | |
597cc809 | 330 | |
ff16b875 SM |
331 | /* Parameter alist of this terminal. */ |
332 | Lisp_Object param_alist; | |
333 | ||
334 | /* All fields before `next_terminal' should be Lisp_Object and are traced | |
335 | by the GC. All fields afterwards are ignored by the GC. */ | |
033b73e2 | 336 | |
6ed8eeff KL |
337 | /* Chain of all terminal devices. */ |
338 | struct terminal *next_terminal; | |
428a555e | 339 | |
6ed8eeff | 340 | /* Unique id for this terminal device. */ |
b6660415 KL |
341 | int id; |
342 | ||
6ed8eeff | 343 | /* The number of frames that are on this terminal. */ |
428a555e | 344 | int reference_count; |
a98f1617 | 345 | |
6ed8eeff | 346 | /* The type of the terminal device. */ |
428a555e KL |
347 | enum output_method type; |
348 | ||
ab797f65 KL |
349 | /* The name of the terminal device. Do not use this to uniquely |
350 | identify a terminal; the same device may be opened multiple | |
351 | times. */ | |
b6660415 KL |
352 | char *name; |
353 | ||
6ed8eeff | 354 | /* The terminal's keyboard object. */ |
bedb9c0e | 355 | struct kboard *kboard; |
bedb9c0e | 356 | |
354884c4 SM |
357 | #ifdef HAVE_WINDOW_SYSTEM |
358 | /* Cache of images. */ | |
359 | struct image_cache *image_cache; | |
360 | #endif /* HAVE_WINDOW_SYSTEM */ | |
361 | ||
6ed8eeff | 362 | /* Device-type dependent data shared amongst all frames on this terminal. */ |
428a555e KL |
363 | union display_info |
364 | { | |
365 | struct tty_display_info *tty; /* termchar.h */ | |
366 | struct x_display_info *x; /* xterm.h */ | |
936ad3d6 | 367 | struct w32_display_info *w32; /* w32term.h */ |
edfda783 | 368 | struct ns_display_info *ns; /* nsterm.h */ |
428a555e KL |
369 | } display_info; |
370 | ||
371 | \f | |
b8299c66 KL |
372 | /* Coding-system to be used for encoding terminal output. This |
373 | structure contains information of a coding-system specified by | |
374 | the function `set-terminal-coding-system'. Also see | |
375 | `safe_terminal_coding' in coding.h. */ | |
376 | struct coding_system *terminal_coding; | |
377 | ||
378 | /* Coding-system of what is sent from terminal keyboard. This | |
379 | structure contains information of a coding-system specified by | |
380 | the function `set-keyboard-coding-system'. */ | |
381 | struct coding_system *keyboard_coding; | |
382 | ||
428a555e KL |
383 | /* Terminal characteristics. */ |
384 | /* XXX Are these really used on non-termcap displays? */ | |
033b73e2 | 385 | |
428a555e KL |
386 | int must_write_spaces; /* Nonzero means spaces in the text must |
387 | actually be output; can't just skip over | |
388 | some columns to leave them blank. */ | |
389 | int fast_clear_end_of_line; /* Nonzero means terminal has a `ce' string */ | |
033b73e2 | 390 | |
428a555e KL |
391 | int line_ins_del_ok; /* Terminal can insert and delete lines */ |
392 | int char_ins_del_ok; /* Terminal can insert and delete chars */ | |
393 | int scroll_region_ok; /* Terminal supports setting the scroll | |
394 | window */ | |
395 | int scroll_region_cost; /* Cost of setting the scroll window, | |
396 | measured in characters. */ | |
397 | int memory_below_frame; /* Terminal remembers lines scrolled | |
398 | off bottom */ | |
399 | ||
400 | #if 0 /* These are not used anywhere. */ | |
401 | /* EMACS_INT baud_rate; */ /* Output speed in baud */ | |
402 | int min_padding_speed; /* Speed below which no padding necessary. */ | |
403 | int dont_calculate_costs; /* Nonzero means don't bother computing | |
404 | various cost tables; we won't use them. */ | |
405 | #endif | |
406 | ||
407 | \f | |
408 | /* Window-based redisplay interface for this device (0 for tty | |
409 | devices). */ | |
410 | struct redisplay_interface *rif; | |
411 | ||
412 | /* Frame-based redisplay interface. */ | |
033b73e2 | 413 | |
428a555e KL |
414 | /* Text display hooks. */ |
415 | ||
385ed61f KL |
416 | void (*cursor_to_hook) P_ ((struct frame *f, int vpos, int hpos)); |
417 | void (*raw_cursor_to_hook) P_ ((struct frame *, int, int)); | |
033b73e2 | 418 | |
385ed61f KL |
419 | void (*clear_to_end_hook) P_ ((struct frame *)); |
420 | void (*clear_frame_hook) P_ ((struct frame *)); | |
421 | void (*clear_end_of_line_hook) P_ ((struct frame *, int)); | |
033b73e2 | 422 | |
385ed61f | 423 | void (*ins_del_lines_hook) P_ ((struct frame *f, int, int)); |
033b73e2 | 424 | |
385ed61f KL |
425 | void (*insert_glyphs_hook) P_ ((struct frame *f, struct glyph *s, int n)); |
426 | void (*write_glyphs_hook) P_ ((struct frame *f, struct glyph *s, int n)); | |
427 | void (*delete_glyphs_hook) P_ ((struct frame *, int)); | |
033b73e2 | 428 | |
385ed61f | 429 | void (*ring_bell_hook) P_ ((struct frame *f)); |
e044e4fc | 430 | void (*toggle_invisible_pointer_hook) P_ ((struct frame *f, int invisible)); |
033b73e2 | 431 | |
6ed8eeff KL |
432 | void (*reset_terminal_modes_hook) P_ ((struct terminal *)); |
433 | void (*set_terminal_modes_hook) P_ ((struct terminal *)); | |
385ed61f | 434 | |
428a555e KL |
435 | void (*update_begin_hook) P_ ((struct frame *)); |
436 | void (*update_end_hook) P_ ((struct frame *)); | |
385ed61f | 437 | void (*set_terminal_window_hook) P_ ((struct frame *, int)); |
428a555e KL |
438 | |
439 | /* Multi-frame and mouse support hooks. */ | |
440 | ||
441 | /* Return the current position of the mouse. | |
442 | ||
443 | Set *f to the frame the mouse is in, or zero if the mouse is in no | |
444 | Emacs frame. If it is set to zero, all the other arguments are | |
445 | garbage. | |
033b73e2 | 446 | |
428a555e KL |
447 | If the motion started in a scroll bar, set *bar_window to the |
448 | scroll bar's window, *part to the part the mouse is currently over, | |
449 | *x to the position of the mouse along the scroll bar, and *y to the | |
450 | overall length of the scroll bar. | |
451 | ||
452 | Otherwise, set *bar_window to Qnil, and *x and *y to the column and | |
453 | row of the character cell the mouse is over. | |
454 | ||
455 | Set *time to the time the mouse was at the returned position. | |
033b73e2 | 456 | |
428a555e KL |
457 | This should clear mouse_moved until the next motion |
458 | event arrives. */ | |
459 | void (*mouse_position_hook) P_ ((struct frame **f, int, | |
460 | Lisp_Object *bar_window, | |
461 | enum scroll_bar_part *part, | |
462 | Lisp_Object *x, | |
463 | Lisp_Object *y, | |
464 | unsigned long *time)); | |
465 | ||
466 | /* The window system handling code should set this if the mouse has | |
467 | moved since the last call to the mouse_position_hook. Calling that | |
468 | hook should clear this. */ | |
469 | int mouse_moved; | |
470 | ||
471 | /* When a frame's focus redirection is changed, this hook tells the | |
472 | window system code to re-decide where to put the highlight. Under | |
473 | X, this means that Emacs lies about where the focus is. */ | |
474 | void (*frame_rehighlight_hook) P_ ((struct frame *)); | |
475 | ||
476 | /* If we're displaying frames using a window system that can stack | |
477 | frames on top of each other, this hook allows you to bring a frame | |
478 | to the front, or bury it behind all the other windows. If this | |
6ed8eeff | 479 | hook is zero, that means the terminal we're displaying on doesn't |
428a555e KL |
480 | support overlapping frames, so there's no need to raise or lower |
481 | anything. | |
033b73e2 | 482 | |
428a555e KL |
483 | If RAISE is non-zero, F is brought to the front, before all other |
484 | windows. If RAISE is zero, F is sent to the back, behind all other | |
485 | windows. */ | |
486 | void (*frame_raise_lower_hook) P_ ((struct frame *f, int raise)); | |
487 | ||
974b73e8 KL |
488 | /* If the value of the frame parameter changed, whis hook is called. |
489 | For example, if going from fullscreen to not fullscreen this hook | |
490 | may do something OS dependent, like extended window manager hints on X11. */ | |
491 | void (*fullscreen_hook) P_ ((struct frame *f)); | |
033b73e2 | 492 | |
428a555e KL |
493 | \f |
494 | /* Scroll bar hooks. */ | |
495 | ||
496 | /* The representation of scroll bars is determined by the code which | |
497 | implements them, except for one thing: they must be represented by | |
498 | lisp objects. This allows us to place references to them in | |
499 | Lisp_Windows without worrying about those references becoming | |
500 | dangling references when the scroll bar is destroyed. | |
033b73e2 | 501 | |
428a555e KL |
502 | The window-system-independent portion of Emacs just refers to |
503 | scroll bars via their windows, and never looks inside the scroll bar | |
504 | representation; it always uses hook functions to do all the | |
505 | scroll bar manipulation it needs. | |
033b73e2 | 506 | |
428a555e KL |
507 | The `vertical_scroll_bar' field of a Lisp_Window refers to that |
508 | window's scroll bar, or is nil if the window doesn't have a | |
509 | scroll bar. | |
033b73e2 | 510 | |
428a555e KL |
511 | The `scroll_bars' and `condemned_scroll_bars' fields of a Lisp_Frame |
512 | are free for use by the scroll bar implementation in any way it sees | |
513 | fit. They are marked by the garbage collector. */ | |
033b73e2 MA |
514 | |
515 | ||
428a555e KL |
516 | /* Set the vertical scroll bar for WINDOW to have its upper left corner |
517 | at (TOP, LEFT), and be LENGTH rows high. Set its handle to | |
518 | indicate that we are displaying PORTION characters out of a total | |
519 | of WHOLE characters, starting at POSITION. If WINDOW doesn't yet | |
520 | have a scroll bar, create one for it. */ | |
521 | void (*set_vertical_scroll_bar_hook) P_ ((struct window *window, | |
522 | int portion, int whole, | |
523 | int position)); | |
524 | ||
525 | ||
526 | /* The following three hooks are used when we're doing a thorough | |
527 | redisplay of the frame. We don't explicitly know which scroll bars | |
528 | are going to be deleted, because keeping track of when windows go | |
529 | away is a real pain - can you say set-window-configuration? | |
530 | Instead, we just assert at the beginning of redisplay that *all* | |
531 | scroll bars are to be removed, and then save scroll bars from the | |
532 | fiery pit when we actually redisplay their window. */ | |
033b73e2 | 533 | |
428a555e KL |
534 | /* Arrange for all scroll bars on FRAME to be removed at the next call |
535 | to `*judge_scroll_bars_hook'. A scroll bar may be spared if | |
536 | `*redeem_scroll_bar_hook' is applied to its window before the judgement. | |
033b73e2 | 537 | |
428a555e KL |
538 | This should be applied to each frame each time its window tree is |
539 | redisplayed, even if it is not displaying scroll bars at the moment; | |
540 | if the HAS_SCROLL_BARS flag has just been turned off, only calling | |
541 | this and the judge_scroll_bars_hook will get rid of them. | |
033b73e2 | 542 | |
428a555e KL |
543 | If non-zero, this hook should be safe to apply to any frame, |
544 | whether or not it can support scroll bars, and whether or not it is | |
545 | currently displaying them. */ | |
546 | void (*condemn_scroll_bars_hook) P_ ((struct frame *frame)); | |
547 | ||
548 | /* Unmark WINDOW's scroll bar for deletion in this judgement cycle. | |
549 | Note that it's okay to redeem a scroll bar that is not condemned. */ | |
550 | void (*redeem_scroll_bar_hook) P_ ((struct window *window)); | |
551 | ||
552 | /* Remove all scroll bars on FRAME that haven't been saved since the | |
553 | last call to `*condemn_scroll_bars_hook'. | |
554 | ||
555 | This should be applied to each frame after each time its window | |
556 | tree is redisplayed, even if it is not displaying scroll bars at the | |
557 | moment; if the HAS_SCROLL_BARS flag has just been turned off, only | |
558 | calling this and condemn_scroll_bars_hook will get rid of them. | |
033b73e2 | 559 | |
428a555e KL |
560 | If non-zero, this hook should be safe to apply to any frame, |
561 | whether or not it can support scroll bars, and whether or not it is | |
562 | currently displaying them. */ | |
563 | void (*judge_scroll_bars_hook) P_ ((struct frame *FRAME)); | |
564 | ||
565 | \f | |
d448e982 KL |
566 | /* Called to read input events. |
567 | ||
6ed8eeff KL |
568 | TERMINAL indicates which terminal device to read from. Input |
569 | events should be read into BUF, the size of which is given in | |
570 | SIZE. EXPECTED is non-zero if the caller suspects that new input | |
571 | is available. | |
d448e982 KL |
572 | |
573 | A positive return value indicates that that many input events | |
574 | where read into BUF. | |
575 | Zero means no events were immediately available. | |
576 | A value of -1 means a transient read error, while -2 indicates | |
7e59217d | 577 | that the device was closed (hangup), and it should be deleted. |
d448e982 KL |
578 | |
579 | XXX Please note that a non-zero value of EXPECTED only means that | |
580 | there is available input on at least one of the currently opened | |
6ed8eeff | 581 | terminal devices -- but not necessarily on this device. |
d448e982 | 582 | Therefore, in most cases EXPECTED should be simply ignored. |
057a9ab4 KL |
583 | |
584 | XXX This documentation needs to be updated. */ | |
6ed8eeff | 585 | int (*read_socket_hook) P_ ((struct terminal *terminal, |
057a9ab4 KL |
586 | int expected, |
587 | struct input_event *hold_quit)); | |
428a555e KL |
588 | |
589 | /* Called when a frame's display becomes entirely up to date. */ | |
590 | void (*frame_up_to_date_hook) P_ ((struct frame *)); | |
591 | ||
592 | \f | |
593 | /* Called to delete the device-specific portions of a frame that is | |
6ed8eeff | 594 | on this terminal device. */ |
428a555e KL |
595 | void (*delete_frame_hook) P_ ((struct frame *)); |
596 | ||
6ed8eeff | 597 | /* Called after the last frame on this terminal is deleted, or when |
d448e982 | 598 | the display device was closed (hangup). |
033b73e2 | 599 | |
6ed8eeff KL |
600 | If this is NULL, then the generic delete_terminal is called |
601 | instead. Otherwise the hook must call delete_terminal itself. | |
428a555e | 602 | |
d448e982 | 603 | The hook must check for and close any live frames that are still |
e2749141 | 604 | on the terminal. delete_frame ensures that there are no live |
6ed8eeff | 605 | frames on the terminal when it calls this hook, so infinite |
d448e982 | 606 | recursion is prevented. */ |
6ed8eeff | 607 | void (*delete_terminal_hook) P_ ((struct terminal *)); |
428a555e KL |
608 | }; |
609 | ||
610 | ||
6ed8eeff KL |
611 | /* Chain of all terminal devices currently in use. */ |
612 | extern struct terminal *terminal_list; | |
428a555e | 613 | |
6ed8eeff KL |
614 | #define FRAME_MUST_WRITE_SPACES(f) ((f)->terminal->must_write_spaces) |
615 | #define FRAME_FAST_CLEAR_END_OF_LINE(f) ((f)->terminal->fast_clear_end_of_line) | |
616 | #define FRAME_LINE_INS_DEL_OK(f) ((f)->terminal->line_ins_del_ok) | |
617 | #define FRAME_CHAR_INS_DEL_OK(f) ((f)->terminal->char_ins_del_ok) | |
618 | #define FRAME_SCROLL_REGION_OK(f) ((f)->terminal->scroll_region_ok) | |
619 | #define FRAME_SCROLL_REGION_COST(f) ((f)->terminal->scroll_region_cost) | |
620 | #define FRAME_MEMORY_BELOW_FRAME(f) ((f)->terminal->memory_below_frame) | |
428a555e | 621 | |
6ed8eeff KL |
622 | #define FRAME_TERMINAL_CODING(f) ((f)->terminal->terminal_coding) |
623 | #define FRAME_KEYBOARD_CODING(f) ((f)->terminal->keyboard_coding) | |
b8299c66 | 624 | |
6ed8eeff KL |
625 | #define TERMINAL_TERMINAL_CODING(d) ((d)->terminal_coding) |
626 | #define TERMINAL_KEYBOARD_CODING(d) ((d)->keyboard_coding) | |
68bba4e4 | 627 | |
6ed8eeff | 628 | #define FRAME_RIF(f) ((f)->terminal->rif) |
428a555e | 629 | |
6ed8eeff | 630 | #define FRAME_TERMINAL(f) ((f)->terminal) |
428a555e KL |
631 | |
632 | /* FRAME_WINDOW_P tests whether the frame is a window, and is | |
633 | defined to be the predicate for the window system being used. */ | |
634 | ||
635 | #ifdef HAVE_X_WINDOWS | |
636 | #define FRAME_WINDOW_P(f) FRAME_X_P (f) | |
637 | #endif | |
638 | #ifdef HAVE_NTGUI | |
639 | #define FRAME_WINDOW_P(f) FRAME_W32_P (f) | |
640 | #endif | |
428a555e KL |
641 | #ifndef FRAME_WINDOW_P |
642 | #define FRAME_WINDOW_P(f) (0) | |
643 | #endif | |
644 | ||
6ed8eeff | 645 | /* Return true if the terminal device is not suspended. */ |
9c69700c | 646 | #define TERMINAL_ACTIVE_P(d) (((d)->type != output_termcap && (d)->type !=output_msdos_raw) || (d)->display_info.tty->input) |
b6660415 | 647 | |
6ed8eeff KL |
648 | extern Lisp_Object get_terminal_param P_ ((struct terminal *, Lisp_Object)); |
649 | extern struct terminal *get_terminal P_ ((Lisp_Object terminal, int)); | |
650 | extern struct terminal *create_terminal P_ ((void)); | |
651 | extern void delete_terminal P_ ((struct terminal *)); | |
428a555e | 652 | |
6ed8eeff KL |
653 | /* The initial terminal device, created by initial_term_init. */ |
654 | extern struct terminal *initial_terminal; | |
114a8b8c | 655 | |
ed5ff21d | 656 | #ifdef HAVE_GPM |
d347e494 | 657 | extern void close_gpm (int gpm_fd); |
ed5ff21d SM |
658 | #endif |
659 | ||
ab5796a9 MB |
660 | /* arch-tag: 33a00ecc-52b5-4186-a410-8801ac9f087d |
661 | (do not change this comment) */ |