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 foreach(screen_to_test
, globalconf
.screens
)
63 if(new_screen
.geometry
.x
== screen_to_test
->geometry
.x
64 && new_screen
.geometry
.y
== screen_to_test
->geometry
.y
)
66 /* we already have a screen for this area, just check if
67 * it's not bigger and drop it */
68 screen_to_test
->geometry
.width
=
69 MAX(new_screen
.geometry
.width
, screen_to_test
->geometry
.width
);
70 screen_to_test
->geometry
.height
=
71 MAX(new_screen
.geometry
.height
, screen_to_test
->geometry
.height
);
74 signal_add(&new_screen
.signals
, "property::workarea");
75 screen_array_append(&globalconf
.screens
, new_screen
);
79 screen_scan_randr(void)
81 /* Check for extension before checking for XRandR */
82 if(xcb_get_extension_data(globalconf
.connection
, &xcb_randr_id
)->present
)
84 xcb_randr_query_version_reply_t
*version_reply
=
85 xcb_randr_query_version_reply(globalconf
.connection
,
86 xcb_randr_query_version(globalconf
.connection
, 1, 1), 0);
89 p_delete(&version_reply
);
91 /* A quick XRandR recall:
92 * You have CRTC that manages a part of a SCREEN.
93 * Each CRTC can draw stuff on one or more OUTPUT. */
94 xcb_randr_get_screen_resources_cookie_t screen_res_c
= xcb_randr_get_screen_resources(globalconf
.connection
, globalconf
.screen
->root
);
95 xcb_randr_get_screen_resources_reply_t
*screen_res_r
= xcb_randr_get_screen_resources_reply(globalconf
.connection
, screen_res_c
, NULL
);
97 /* Only use the data from XRandR if there is more than one screen
98 * defined. This should work around the broken nvidia driver. */
99 if (screen_res_r
->num_crtcs
<= 1)
101 p_delete(&screen_res_r
);
105 /* We go through CRTC, and build a screen for each one. */
106 xcb_randr_crtc_t
*randr_crtcs
= xcb_randr_get_screen_resources_crtcs(screen_res_r
);
108 for(int i
= 0; i
< screen_res_r
->num_crtcs
; i
++)
110 /* Get info on the output crtc */
111 xcb_randr_get_crtc_info_cookie_t crtc_info_c
= xcb_randr_get_crtc_info(globalconf
.connection
, randr_crtcs
[i
], XCB_CURRENT_TIME
);
112 xcb_randr_get_crtc_info_reply_t
*crtc_info_r
= xcb_randr_get_crtc_info_reply(globalconf
.connection
, crtc_info_c
, NULL
);
114 /* If CRTC has no OUTPUT, ignore it */
115 if(!xcb_randr_get_crtc_info_outputs_length(crtc_info_r
))
118 /* Prepare the new screen */
120 p_clear(&new_screen
, 1);
121 new_screen
.geometry
.x
= crtc_info_r
->x
;
122 new_screen
.geometry
.y
= crtc_info_r
->y
;
123 new_screen
.geometry
.width
= crtc_info_r
->width
;
124 new_screen
.geometry
.height
= crtc_info_r
->height
;
126 xcb_randr_output_t
*randr_outputs
= xcb_randr_get_crtc_info_outputs(crtc_info_r
);
128 for(int j
= 0; j
< xcb_randr_get_crtc_info_outputs_length(crtc_info_r
); j
++)
130 xcb_randr_get_output_info_cookie_t output_info_c
= xcb_randr_get_output_info(globalconf
.connection
, randr_outputs
[j
], XCB_CURRENT_TIME
);
131 xcb_randr_get_output_info_reply_t
*output_info_r
= xcb_randr_get_output_info_reply(globalconf
.connection
, output_info_c
, NULL
);
133 int len
= xcb_randr_get_output_info_name_length(output_info_r
);
134 /* name is not NULL terminated */
135 char *name
= memcpy(p_new(char *, len
+ 1), xcb_randr_get_output_info_name(output_info_r
), len
);
138 screen_output_array_append(&new_screen
.outputs
,
139 (screen_output_t
) { .name
= name
,
140 .mm_width
= output_info_r
->mm_width
,
141 .mm_height
= output_info_r
->mm_height
});
143 p_delete(&output_info_r
);
146 screen_add(new_screen
);
148 p_delete(&crtc_info_r
);
151 p_delete(&screen_res_r
);
161 screen_scan_xinerama(void)
163 bool xinerama_is_active
= false;
165 /* Check for extension before checking for Xinerama */
166 if(xcb_get_extension_data(globalconf
.connection
, &xcb_xinerama_id
)->present
)
168 xcb_xinerama_is_active_reply_t
*xia
;
169 xia
= xcb_xinerama_is_active_reply(globalconf
.connection
, xcb_xinerama_is_active(globalconf
.connection
), NULL
);
170 xinerama_is_active
= xia
->state
;
174 if(xinerama_is_active
)
176 xcb_xinerama_query_screens_reply_t
*xsq
;
177 xcb_xinerama_screen_info_t
*xsi
;
178 int xinerama_screen_number
;
180 xsq
= xcb_xinerama_query_screens_reply(globalconf
.connection
,
181 xcb_xinerama_query_screens_unchecked(globalconf
.connection
),
184 xsi
= xcb_xinerama_query_screens_screen_info(xsq
);
185 xinerama_screen_number
= xcb_xinerama_query_screens_screen_info_length(xsq
);
187 /* now check if screens overlaps (same x,y): if so, we take only the biggest one */
188 for(int screen
= 0; screen
< xinerama_screen_number
; screen
++)
192 s
.geometry
= screen_xsitoarea(xsi
[screen
]);
204 static void screen_scan_x11(void)
206 /* One screen only / Zaphod mode */
207 xcb_screen_t
*xcb_screen
= globalconf
.screen
;
212 s
.geometry
.width
= xcb_screen
->width_in_pixels
;
213 s
.geometry
.height
= xcb_screen
->height_in_pixels
;
217 /** Get screens informations and fill global configuration.
222 if(!screen_scan_randr() && !screen_scan_xinerama())
226 /** Return the Xinerama screen number where the coordinates belongs to.
227 * \param screen The logical screen number.
228 * \param x X coordinate
229 * \param y Y coordinate
230 * \return Screen pointer or screen param if no match or no multi-head.
233 screen_getbycoord(int x
, int y
)
235 foreach(s
, globalconf
.screens
)
236 if((x
< 0 || (x
>= s
->geometry
.x
&& x
< s
->geometry
.x
+ s
->geometry
.width
))
237 && (y
< 0 || (y
>= s
->geometry
.y
&& y
< s
->geometry
.y
+ s
->geometry
.height
)))
240 /* No screen found, let's be creative. */
241 return &globalconf
.screens
.tab
[0];
244 /** Get screens info.
245 * \param screen Screen.
246 * \param strut Honor windows strut.
247 * \return The screen area.
250 screen_area_get(screen_t
*screen
, bool strut
)
253 return screen
->geometry
;
255 area_t area
= screen
->geometry
;
256 uint16_t top
= 0, bottom
= 0, left
= 0, right
= 0;
258 #define COMPUTE_STRUT(o) \
260 if((o)->strut.top_start_x || (o)->strut.top_end_x || (o)->strut.top) \
263 top = MAX(top, (o)->strut.top); \
265 top = MAX(top, ((o)->geometry.y - area.y) + (o)->geometry.height); \
267 if((o)->strut.bottom_start_x || (o)->strut.bottom_end_x || (o)->strut.bottom) \
269 if((o)->strut.bottom) \
270 bottom = MAX(bottom, (o)->strut.bottom); \
272 bottom = MAX(bottom, (area.y + area.height) - (o)->geometry.y); \
274 if((o)->strut.left_start_y || (o)->strut.left_end_y || (o)->strut.left) \
276 if((o)->strut.left) \
277 left = MAX(left, (o)->strut.left); \
279 left = MAX(left, ((o)->geometry.x - area.x) + (o)->geometry.width); \
281 if((o)->strut.right_start_y || (o)->strut.right_end_y || (o)->strut.right) \
283 if((o)->strut.right) \
284 right = MAX(right, (o)->strut.right); \
286 right = MAX(right, (area.x + area.width) - (o)->geometry.x); \
290 foreach(c
, globalconf
.clients
)
291 if((*c
)->screen
== screen
&& client_isvisible(*c
))
294 foreach(drawin
, globalconf
.drawins
)
295 if((*drawin
)->visible
)
298 screen_getbycoord((*drawin
)->geometry
.x
, (*drawin
)->geometry
.y
);
299 if (d_screen
== screen
)
300 COMPUTE_STRUT(*drawin
)
307 area
.width
-= left
+ right
;
308 area
.height
-= top
+ bottom
;
313 /** Get display info.
314 * \return The display area.
317 display_area_get(void)
319 xcb_screen_t
*s
= globalconf
.screen
;
320 area_t area
= { .x
= 0,
322 .width
= s
->width_in_pixels
,
323 .height
= s
->height_in_pixels
};
327 /** Move a client to a virtual screen.
328 * \param c The client to move.
329 * \param new_screen The destination screen.
330 * \param doresize Set to true if we also move the client to the new x and
331 * y of the new screen.
334 screen_client_moveto(client_t
*c
, screen_t
*new_screen
, bool doresize
)
336 screen_t
*old_screen
= c
->screen
;
338 bool had_focus
= false;
340 if(new_screen
== c
->screen
)
343 if (globalconf
.focus
.client
== c
)
346 c
->screen
= new_screen
;
350 luaA_object_push(globalconf
.L
, c
);
351 luaA_object_emit_signal(globalconf
.L
, -1, "property::screen", 0);
352 lua_pop(globalconf
.L
, 1);
358 from
= screen_area_get(old_screen
, false);
359 to
= screen_area_get(c
->screen
, false);
361 area_t new_geometry
= c
->geometry
;
363 new_geometry
.x
= to
.x
+ new_geometry
.x
- from
.x
;
364 new_geometry
.y
= to
.y
+ new_geometry
.y
- from
.y
;
366 /* resize the client if it doesn't fit the new screen */
367 if(new_geometry
.width
> to
.width
)
368 new_geometry
.width
= to
.width
;
369 if(new_geometry
.height
> to
.height
)
370 new_geometry
.height
= to
.height
;
372 /* make sure the client is still on the screen */
373 if(new_geometry
.x
+ new_geometry
.width
> to
.x
+ to
.width
)
374 new_geometry
.x
= to
.x
+ to
.width
- new_geometry
.width
;
375 if(new_geometry
.y
+ new_geometry
.height
> to
.y
+ to
.height
)
376 new_geometry
.y
= to
.y
+ to
.height
- new_geometry
.height
;
378 /* move / resize the client */
379 client_resize(c
, new_geometry
);
380 luaA_object_push(globalconf
.L
, c
);
381 luaA_object_emit_signal(globalconf
.L
, -1, "property::screen", 0);
382 lua_pop(globalconf
.L
, 1);
387 /** Push a screen onto the stack.
388 * \param L The Lua VM state.
389 * \param s The screen to push.
390 * \return The number of elements pushed on stack.
393 luaA_pushscreen(lua_State
*L
, screen_t
*s
)
395 screen_t
**ps
= lua_newuserdata(L
, sizeof(*ps
));
397 luaL_getmetatable(L
, "screen");
398 lua_setmetatable(L
, -2);
403 * \param L The Lua VM state.
404 * \return The number of elements pushed on stack.
406 * \lfield number The screen number, to get a screen.
409 luaA_screen_module_index(lua_State
*L
)
413 if((name
= lua_tostring(L
, 2)))
414 foreach(screen
, globalconf
.screens
)
415 foreach(output
, screen
->outputs
)
416 if(A_STREQ(output
->name
, name
))
417 return luaA_pushscreen(L
, screen
);
419 int screen
= luaL_checknumber(L
, 2) - 1;
420 luaA_checkscreen(screen
);
421 return luaA_pushscreen(L
, &globalconf
.screens
.tab
[screen
]);
425 * \param L The Lua VM state.
426 * \return The number of elements pushed on stack.
428 * \lfield coords The screen coordinates. Immutable.
429 * \lfield workarea The screen workarea.
432 luaA_screen_index(lua_State
*L
)
438 /* Get metatable of the screen. */
439 lua_getmetatable(L
, 1);
443 /* Do we have a field like that? */
444 if(!lua_isnil(L
, -1))
446 /* Yes, so return it! */
450 /* No, so remove everything. */
453 buf
= luaL_checkstring(L
, 2);
454 ps
= luaL_checkudata(L
, 1, "screen");
457 if(A_STREQ(buf
, "index"))
459 lua_pushinteger(L
, screen_array_indexof(&globalconf
.screens
, s
) + 1);
463 if(A_STREQ(buf
, "geometry"))
465 luaA_pusharea(L
, s
->geometry
);
469 if(A_STREQ(buf
, "workarea"))
471 luaA_pusharea(L
, screen_area_get(s
, true));
475 if(A_STREQ(buf
, "outputs"))
477 lua_createtable(L
, 0, s
->outputs
.len
);
478 foreach(output
, s
->outputs
)
480 lua_createtable(L
, 2, 0);
482 lua_pushinteger(L
, output
->mm_width
);
483 lua_setfield(L
, -2, "mm_width");
484 lua_pushinteger(L
, output
->mm_height
);
485 lua_setfield(L
, -2, "mm_height");
487 lua_setfield(L
, -2, output
->name
);
489 /* The table of tables we created. */
497 * \param L The Lua VM state.
498 * \return The number of elements pushed on stack.
501 luaA_screen_equal(lua_State
*L
)
506 ps1
= luaL_checkudata(L
, 1, "screen");
507 ps2
= luaL_checkudata(L
, 2, "screen");
508 lua_pushboolean(L
, *ps1
== *ps2
);
513 /** Add a signal to a screen.
514 * \param L The Lua VM state.
515 * \return The number of elements pushed on stack.
518 * \lparam A signal name.
521 luaA_screen_add_signal(lua_State
*L
)
523 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
525 const char *name
= luaL_checkstring(L
, 2);
526 signal_add(&s
->signals
, name
);
530 /** Connect a screen's signal.
531 * \param L The Lua VM state.
532 * \return The number of elements pushed on stack.
535 * \lparam A signal name.
536 * \lparam A function to call when the signal is emitted.
539 luaA_screen_connect_signal(lua_State
*L
)
541 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
543 const char *name
= luaL_checkstring(L
, 2);
544 luaA_checkfunction(L
, 3);
545 signal_connect(&s
->signals
, name
, luaA_object_ref(L
, 3));
549 /** Remove a signal to a screen.
550 * \param L The Lua VM state.
551 * \return The number of elements pushed on stack.
554 * \lparam A signal name.
555 * \lparam A function to remove
558 luaA_screen_disconnect_signal(lua_State
*L
)
560 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
562 const char *name
= luaL_checkstring(L
, 2);
563 luaA_checkfunction(L
, 3);
564 const void *ref
= lua_topointer(L
, 3);
565 signal_disconnect(&s
->signals
, name
, ref
);
566 luaA_object_unref(L
, (void *) ref
);
570 /** Emit a signal to a screen.
571 * \param L The Lua VM state.
572 * \param screen The screen.
573 * \param name The signal name.
574 * \param nargs The number of arguments to the signal function.
577 screen_emit_signal(lua_State
*L
, screen_t
*screen
, const char *name
, int nargs
)
579 luaA_pushscreen(L
, screen
);
580 lua_insert(L
, - nargs
- 1);
581 signal_object_emit(L
, &screen
->signals
, name
, nargs
+ 1);
584 /** Emit a signal to a screen.
585 * \param L The Lua VM state.
586 * \return The number of elements pushed on stack.
589 * \lparam A signal name.
590 * \lparam Various arguments, optional.
593 luaA_screen_emit_signal(lua_State
*L
)
595 screen_t
**ps
= luaL_checkudata(L
, 1, "screen");
596 screen_emit_signal(L
, *ps
, luaL_checkstring(L
, 2), lua_gettop(L
) - 2);
600 /** Get the screen count.
601 * \param L The Lua VM state.
602 * \return The number of elements pushed on stack.
605 * \lreturn The screen count, at least 1.
608 luaA_screen_count(lua_State
*L
)
610 lua_pushnumber(L
, globalconf
.screens
.len
);
614 const struct luaL_Reg awesome_screen_methods
[] =
616 { "count", luaA_screen_count
},
617 { "__index", luaA_screen_module_index
},
621 const struct luaL_Reg awesome_screen_meta
[] =
623 { "add_signal", luaA_screen_add_signal
},
624 { "connect_signal", luaA_screen_connect_signal
},
625 { "disconnect_signal", luaA_screen_disconnect_signal
},
626 { "emit_signal", luaA_screen_emit_signal
},
627 { "__index", luaA_screen_index
},
628 { "__eq", luaA_screen_equal
},
632 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80