2 * screen.c - screen management
4 * Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program 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.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include <xcb/xinerama.h>
26 #include <xcb/randr.h>
30 #include "objects/tag.h"
31 #include "objects/client.h"
32 #include "objects/drawin.h"
34 #include "common/xutil.h"
36 struct screen_output_t
38 /** The XRandR names of the output */
40 /** The size in millimeters */
41 uint32_t mm_width
, mm_height
;
44 ARRAY_FUNCS(screen_output_t
, screen_output
, DO_NOTHING
)
47 screen_xsitoarea(xcb_xinerama_screen_info_t si
)
60 screen_add(screen_t new_screen
)
62 signal_add(&new_screen
.signals
, "property::workarea");
63 screen_array_append(&globalconf
.screens
, new_screen
);
67 screen_scan_randr(void)
69 /* Check for extension before checking for XRandR */
70 if(xcb_get_extension_data(globalconf
.connection
, &xcb_randr_id
)->present
)
72 xcb_randr_query_version_reply_t
*version_reply
=
73 xcb_randr_query_version_reply(globalconf
.connection
,
74 xcb_randr_query_version(globalconf
.connection
, 1, 1), 0);
77 p_delete(&version_reply
);
79 /* A quick XRandR recall:
80 * You have CRTC that manages a part of a SCREEN.
81 * Each CRTC can draw stuff on one or more OUTPUT. */
82 xcb_randr_get_screen_resources_cookie_t screen_res_c
= xcb_randr_get_screen_resources(globalconf
.connection
, globalconf
.screen
->root
);
83 xcb_randr_get_screen_resources_reply_t
*screen_res_r
= xcb_randr_get_screen_resources_reply(globalconf
.connection
, screen_res_c
, NULL
);
85 /* Only use the data from XRandR if there is more than one screen
86 * defined. This should work around the broken nvidia driver. */
87 if (screen_res_r
->num_crtcs
<= 1)
89 p_delete(&screen_res_r
);
93 /* We go through CRTC, and build a screen for each one. */
94 xcb_randr_crtc_t
*randr_crtcs
= xcb_randr_get_screen_resources_crtcs(screen_res_r
);
96 for(int i
= 0; i
< screen_res_r
->num_crtcs
; i
++)
98 /* Get info on the output crtc */
99 xcb_randr_get_crtc_info_cookie_t crtc_info_c
= xcb_randr_get_crtc_info(globalconf
.connection
, randr_crtcs
[i
], XCB_CURRENT_TIME
);
100 xcb_randr_get_crtc_info_reply_t
*crtc_info_r
= xcb_randr_get_crtc_info_reply(globalconf
.connection
, crtc_info_c
, NULL
);
102 /* If CRTC has no OUTPUT, ignore it */
103 if(!xcb_randr_get_crtc_info_outputs_length(crtc_info_r
))
106 /* Prepare the new screen */
108 p_clear(&new_screen
, 1);
109 new_screen
.geometry
.x
= crtc_info_r
->x
;
110 new_screen
.geometry
.y
= crtc_info_r
->y
;
111 new_screen
.geometry
.width
= crtc_info_r
->width
;
112 new_screen
.geometry
.height
= crtc_info_r
->height
;
114 xcb_randr_output_t
*randr_outputs
= xcb_randr_get_crtc_info_outputs(crtc_info_r
);
116 for(int j
= 0; j
< xcb_randr_get_crtc_info_outputs_length(crtc_info_r
); j
++)
118 xcb_randr_get_output_info_cookie_t output_info_c
= xcb_randr_get_output_info(globalconf
.connection
, randr_outputs
[j
], XCB_CURRENT_TIME
);
119 xcb_randr_get_output_info_reply_t
*output_info_r
= xcb_randr_get_output_info_reply(globalconf
.connection
, output_info_c
, NULL
);
121 int len
= xcb_randr_get_output_info_name_length(output_info_r
);
122 /* name is not NULL terminated */
123 char *name
= memcpy(p_new(char *, len
+ 1), xcb_randr_get_output_info_name(output_info_r
), len
);
126 screen_output_array_append(&new_screen
.outputs
,
127 (screen_output_t
) { .name
= name
,
128 .mm_width
= output_info_r
->mm_width
,
129 .mm_height
= output_info_r
->mm_height
});
131 p_delete(&output_info_r
);
134 screen_add(new_screen
);
136 p_delete(&crtc_info_r
);
139 p_delete(&screen_res_r
);
149 screen_scan_xinerama(void)
151 bool xinerama_is_active
= false;
153 /* Check for extension before checking for Xinerama */
154 if(xcb_get_extension_data(globalconf
.connection
, &xcb_xinerama_id
)->present
)
156 xcb_xinerama_is_active_reply_t
*xia
;
157 xia
= xcb_xinerama_is_active_reply(globalconf
.connection
, xcb_xinerama_is_active(globalconf
.connection
), NULL
);
158 xinerama_is_active
= xia
->state
;
162 if(xinerama_is_active
)
164 xcb_xinerama_query_screens_reply_t
*xsq
;
165 xcb_xinerama_screen_info_t
*xsi
;
166 int xinerama_screen_number
;
168 xsq
= xcb_xinerama_query_screens_reply(globalconf
.connection
,
169 xcb_xinerama_query_screens_unchecked(globalconf
.connection
),
172 xsi
= xcb_xinerama_query_screens_screen_info(xsq
);
173 xinerama_screen_number
= xcb_xinerama_query_screens_screen_info_length(xsq
);
175 /* now check if screens overlaps (same x,y): if so, we take only the biggest one */
176 for(int screen
= 0; screen
< xinerama_screen_number
; screen
++)
179 foreach(screen_to_test
, globalconf
.screens
)
180 if(xsi
[screen
].x_org
== screen_to_test
->geometry
.x
181 && xsi
[screen
].y_org
== screen_to_test
->geometry
.y
)
183 /* we already have a screen for this area, just check if
184 * it's not bigger and drop it */
186 int i
= screen_array_indexof(&globalconf
.screens
, screen_to_test
);
187 screen_to_test
->geometry
.width
=
188 MAX(xsi
[screen
].width
, xsi
[i
].width
);
189 screen_to_test
->geometry
.height
=
190 MAX(xsi
[screen
].height
, xsi
[i
].height
);
196 s
.geometry
= screen_xsitoarea(xsi
[screen
]);
209 static void screen_scan_x11(void)
211 /* One screen only / Zaphod mode */
212 xcb_screen_t
*xcb_screen
= globalconf
.screen
;
217 s
.geometry
.width
= xcb_screen
->width_in_pixels
;
218 s
.geometry
.height
= xcb_screen
->height_in_pixels
;
222 /** Get screens informations and fill global configuration.
227 if(!screen_scan_randr() && !screen_scan_xinerama())
231 /** Return the Xinerama screen number where the coordinates belongs to.
232 * \param screen The logical screen number.
233 * \param x X coordinate
234 * \param y Y coordinate
235 * \return Screen pointer or screen param if no match or no multi-head.
238 screen_getbycoord(int x
, int y
)
240 foreach(s
, globalconf
.screens
)
241 if((x
< 0 || (x
>= s
->geometry
.x
&& x
< s
->geometry
.x
+ s
->geometry
.width
))
242 && (y
< 0 || (y
>= s
->geometry
.y
&& y
< s
->geometry
.y
+ s
->geometry
.height
)))
245 /* No screen found, let's be creative. */
246 return &globalconf
.screens
.tab
[0];
249 /** Get screens info.
250 * \param screen Screen.
251 * \param strut Honor windows strut.
252 * \return The screen area.
255 screen_area_get(screen_t
*screen
, bool strut
)
258 return screen
->geometry
;
260 area_t area
= screen
->geometry
;
261 uint16_t top
= 0, bottom
= 0, left
= 0, right
= 0;
263 #define COMPUTE_STRUT(o) \
265 if((o)->strut.top_start_x || (o)->strut.top_end_x || (o)->strut.top) \
268 top = MAX(top, (o)->strut.top); \
270 top = MAX(top, ((o)->geometry.y - area.y) + (o)->geometry.height); \
272 if((o)->strut.bottom_start_x || (o)->strut.bottom_end_x || (o)->strut.bottom) \
274 if((o)->strut.bottom) \
275 bottom = MAX(bottom, (o)->strut.bottom); \
277 bottom = MAX(bottom, (area.y + area.height) - (o)->geometry.y); \
279 if((o)->strut.left_start_y || (o)->strut.left_end_y || (o)->strut.left) \
281 if((o)->strut.left) \
282 left = MAX(left, (o)->strut.left); \
284 left = MAX(left, ((o)->geometry.x - area.x) + (o)->geometry.width); \
286 if((o)->strut.right_start_y || (o)->strut.right_end_y || (o)->strut.right) \
288 if((o)->strut.right) \
289 right = MAX(right, (o)->strut.right); \
291 right = MAX(right, (area.x + area.width) - (o)->geometry.x); \
295 foreach(c
, globalconf
.clients
)
296 if((*c
)->screen
== screen
&& client_isvisible(*c
))
299 foreach(drawin
, globalconf
.drawins
)
300 if((*drawin
)->visible
)
303 screen_getbycoord((*drawin
)->geometry
.x
, (*drawin
)->geometry
.y
);
304 if (d_screen
== screen
)
305 COMPUTE_STRUT(*drawin
)
312 area
.width
-= left
+ right
;
313 area
.height
-= top
+ bottom
;
318 /** Get display info.
319 * \return The display area.
322 display_area_get(void)
324 xcb_screen_t
*s
= globalconf
.screen
;
325 area_t area
= { .x
= 0,
327 .width
= s
->width_in_pixels
,
328 .height
= s
->height_in_pixels
};
332 /** Move a client to a virtual screen.
333 * \param c The client to move.
334 * \param new_screen The destination screen.
335 * \param doresize Set to true if we also move the client to the new x and
336 * y of the new screen.
339 screen_client_moveto(client_t
*c
, screen_t
*new_screen
, bool doresize
)
341 screen_t
*old_screen
= c
->screen
;
343 bool had_focus
= false;
345 if(new_screen
== c
->screen
)
348 if (globalconf
.focus
.client
== c
)
351 c
->screen
= new_screen
;
355 luaA_object_push(globalconf
.L
, c
);
356 luaA_object_emit_signal(globalconf
.L
, -1, "property::screen", 0);
357 lua_pop(globalconf
.L
, 1);
363 from
= screen_area_get(old_screen
, false);
364 to
= screen_area_get(c
->screen
, false);
366 area_t new_geometry
= c
->geometry
;
368 new_geometry
.x
= to
.x
+ new_geometry
.x
- from
.x
;
369 new_geometry
.y
= to
.y
+ new_geometry
.y
- from
.y
;
371 /* resize the client if it doesn't fit the new screen */
372 if(new_geometry
.width
> to
.width
)
373 new_geometry
.width
= to
.width
;
374 if(new_geometry
.height
> to
.height
)
375 new_geometry
.height
= to
.height
;
377 /* make sure the client is still on the screen */
378 if(new_geometry
.x
+ new_geometry
.width
> to
.x
+ to
.width
)
379 new_geometry
.x
= to
.x
+ to
.width
- new_geometry
.width
;
380 if(new_geometry
.y
+ new_geometry
.height
> to
.y
+ to
.height
)
381 new_geometry
.y
= to
.y
+ to
.height
- new_geometry
.height
;
383 /* move / resize the client */
384 client_resize(c
, new_geometry
);
385 luaA_object_push(globalconf
.L
, c
);
386 luaA_object_emit_signal(globalconf
.L
, -1, "property::screen", 0);
387 lua_pop(globalconf
.L
, 1);
392 /** Push a screen onto the stack.
393 * \param L The Lua VM state.
394 * \param s The screen to push.
395 * \return The number of elements pushed on stack.
398 luaA_pushscreen(lua_State
*L
, screen_t
*s
)
400 screen_t
**ps
= lua_newuserdata(L
, sizeof(*ps
));
402 luaL_getmetatable(L
, "screen");
403 lua_setmetatable(L
, -2);
408 * \param L The Lua VM state.
409 * \return The number of elements pushed on stack.
411 * \lfield number The screen number, to get a screen.
414 luaA_screen_module_index(lua_State
*L
)
418 if((name
= lua_tostring(L
, 2)))
419 foreach(screen
, globalconf
.screens
)
420 foreach(output
, screen
->outputs
)
421 if(A_STREQ(output
->name
, name
))
422 return luaA_pushscreen(L
, screen
);
424 int screen
= luaL_checknumber(L
, 2) - 1;
425 luaA_checkscreen(screen
);
426 return luaA_pushscreen(L
, &globalconf
.screens
.tab
[screen
]);
430 * \param L The Lua VM state.
431 * \return The number of elements pushed on stack.
433 * \lfield coords The screen coordinates. Immutable.
434 * \lfield workarea The screen workarea.
437 luaA_screen_index(lua_State
*L
)
443 /* Get metatable of the screen. */
444 lua_getmetatable(L
, 1);
448 /* Do we have a field like that? */
449 if(!lua_isnil(L
, -1))
451 /* Yes, so return it! */
455 /* No, so remove everything. */
458 buf
= luaL_checkstring(L
, 2);
459 ps
= luaL_checkudata(L
, 1, "screen");
462 if(A_STREQ(buf
, "index"))
464 lua_pushinteger(L
, screen_array_indexof(&globalconf
.screens
, s
) + 1);
468 if(A_STREQ(buf
, "geometry"))
470 luaA_pusharea(L
, s
->geometry
);
474 if(A_STREQ(buf
, "workarea"))
476 luaA_pusharea(L
, screen_area_get(s
, true));
480 if(A_STREQ(buf
, "outputs"))
482 lua_createtable(L
, 0, s
->outputs
.len
);
483 foreach(output
, s
->outputs
)
485 lua_createtable(L
, 2, 0);
487 lua_pushinteger(L
, output
->mm_width
);
488 lua_setfield(L
, -2, "mm_width");
489 lua_pushinteger(L
, output
->mm_height
);
490 lua_setfield(L
, -2, "mm_height");
492 lua_setfield(L
, -2, output
->name
);
494 /* The table of tables we created. */
502 * \param L The Lua VM state.
503 * \return The number of elements pushed on stack.
506 luaA_screen_equal(lua_State
*L
)
511 ps1
= luaL_checkudata(L
, 1, "screen");
512 ps2
= luaL_checkudata(L
, 2, "screen");
513 lua_pushboolean(L
, *ps1
== *ps2
);
518 /** Add a signal to a screen.
519 * \param L The Lua VM state.
520 * \return The number of elements pushed on stack.
523 * \lparam A signal name.
526 luaA_screen_add_signal(lua_State
*L
)
528 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
530 const char *name
= luaL_checkstring(L
, 2);
531 signal_add(&s
->signals
, name
);
535 /** Connect a screen's signal.
536 * \param L The Lua VM state.
537 * \return The number of elements pushed on stack.
540 * \lparam A signal name.
541 * \lparam A function to call when the signal is emitted.
544 luaA_screen_connect_signal(lua_State
*L
)
546 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
548 const char *name
= luaL_checkstring(L
, 2);
549 luaA_checkfunction(L
, 3);
550 signal_connect(&s
->signals
, name
, luaA_object_ref(L
, 3));
554 /** Remove a signal to a screen.
555 * \param L The Lua VM state.
556 * \return The number of elements pushed on stack.
559 * \lparam A signal name.
560 * \lparam A function to remove
563 luaA_screen_disconnect_signal(lua_State
*L
)
565 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
567 const char *name
= luaL_checkstring(L
, 2);
568 luaA_checkfunction(L
, 3);
569 const void *ref
= lua_topointer(L
, 3);
570 signal_disconnect(&s
->signals
, name
, ref
);
571 luaA_object_unref(L
, (void *) ref
);
575 /** Emit a signal to a screen.
576 * \param L The Lua VM state.
577 * \param screen The screen.
578 * \param name The signal name.
579 * \param nargs The number of arguments to the signal function.
582 screen_emit_signal(lua_State
*L
, screen_t
*screen
, const char *name
, int nargs
)
584 luaA_pushscreen(L
, screen
);
585 lua_insert(L
, - nargs
- 1);
586 signal_object_emit(L
, &screen
->signals
, name
, nargs
+ 1);
589 /** Emit a signal to a screen.
590 * \param L The Lua VM state.
591 * \return The number of elements pushed on stack.
594 * \lparam A signal name.
595 * \lparam Various arguments, optional.
598 luaA_screen_emit_signal(lua_State
*L
)
600 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
601 screen_emit_signal(L
, *ps
, luaL_checkstring(L
, 2), lua_gettop(L
) - 2);
605 /** Get the screen count.
606 * \param L The Lua VM state.
607 * \return The number of elements pushed on stack.
610 * \lreturn The screen count, at least 1.
613 luaA_screen_count(lua_State
*L
)
615 lua_pushnumber(L
, globalconf
.screens
.len
);
619 const struct luaL_Reg awesome_screen_methods
[] =
621 { "count", luaA_screen_count
},
622 { "__index", luaA_screen_module_index
},
626 const struct luaL_Reg awesome_screen_meta
[] =
628 { "add_signal", luaA_screen_add_signal
},
629 { "connect_signal", luaA_screen_connect_signal
},
630 { "disconnect_signal", luaA_screen_disconnect_signal
},
631 { "emit_signal", luaA_screen_emit_signal
},
632 { "__index", luaA_screen_index
},
633 { "__eq", luaA_screen_equal
},
637 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80