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[bspwm.git] / window.c
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <stdarg.h>
4 #include <string.h>
5 #include <xcb/xcb.h>
6 #include <xcb/xcb_event.h>
7 #include <xcb/xcb_icccm.h>
8 #include "types.h"
9 #include "tree.h"
10 #include "bspwm.h"
11 #include "settings.h"
12 #include "ewmh.h"
13 #include "rules.h"
14 #include "window.h"
15
16 void center(xcb_rectangle_t a, xcb_rectangle_t *b)
17 {
18     if (b->width < a.width)
19         b->x = a.x + (a.width - b->width) / 2;
20     if (b->height < a.height)
21         b->y = a.y + (a.height - b->height) / 2;
22 }
23
24 bool contains(xcb_rectangle_t a, xcb_rectangle_t b)
25 {
26     return (a.x <= b.x && (a.x + a.width) >= (b.x + b.width)
27             && a.y <= b.y && (a.y + a.height) >= (b.y + b.height));
28 }
29
30 bool might_cover(desktop_t *d, node_t *n)
31 {
32     for (node_t *f = first_extrema(d->root); f != NULL; f = next_leaf(f))
33         if (f != n && is_floating(f->client) && contains(n->client->floating_rectangle, f->client->floating_rectangle))
34             return true;
35     return false;
36 }
37
38 bool locate_window(xcb_window_t win, window_location_t *loc)
39 {
40     for (monitor_t *m = mon_head; m != NULL; m = m->next)
41         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
42             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
43                 if (n->client->window == win) {
44                     loc->monitor = m;
45                     loc->desktop = d;
46                     loc->node = n;
47                     return true;
48                 }
49     return false;
50 }
51
52 bool locate_desktop(char *name, desktop_location_t *loc)
53 {
54     for (monitor_t *m = mon_head; m != NULL; m = m->next)
55         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
56             if (strcmp(d->name, name) == 0) {
57                 loc->monitor = m;
58                 loc->desktop = d;
59                 return true;
60             }
61     return false;
62 }
63
64 bool is_inside(monitor_t *m, xcb_point_t p)
65 {
66     xcb_rectangle_t r = m->rectangle;
67     return (r.x <= p.x && p.x < (r.x + r.width)
68             && r.y <= p.y && p.y < (r.y + r.height));
69 }
70
71 monitor_t *underlying_monitor(client_t *c)
72 {
73     xcb_point_t p = (xcb_point_t) {c->floating_rectangle.x, c->floating_rectangle.y};
74     for (monitor_t *m = mon_head; m != NULL; m = m->next)
75         if (is_inside(m, p))
76             return m;
77     return NULL;
78 }
79
80 void manage_window(monitor_t *m, desktop_t *d, xcb_window_t win)
81 {
82     window_location_t loc;
83     xcb_get_window_attributes_reply_t *wa = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
84     uint8_t override_redirect = 0;
85
86     if (wa != NULL) {
87         override_redirect = wa->override_redirect;
88         free(wa);
89     }
90
91     if (override_redirect || locate_window(win, &loc))
92         return;
93
94     bool floating = false, transient = false, fullscreen = false, takes_focus = true, manage = true;
95
96     handle_rules(win, &m, &d, &floating, &transient, &fullscreen, &takes_focus, &manage);
97
98     if (!manage) {
99         window_show(win);
100         return;
101     }
102
103     client_t *c = make_client(win);
104     update_floating_rectangle(c);
105
106     xcb_icccm_get_wm_class_reply_t reply;
107     if (xcb_icccm_get_wm_class_reply(dpy, xcb_icccm_get_wm_class(dpy, win), &reply, NULL) == 1) {
108         strncpy(c->class_name, reply.class_name, sizeof(c->class_name));
109         xcb_icccm_get_wm_class_reply_wipe(&reply);
110     }
111
112     if (c->transient)
113         floating = true;
114
115     node_t *birth = make_node();
116     birth->client = c;
117
118     if (floating)
119         split_mode = MODE_MANUAL;
120
121     insert_node(m, d, birth);
122
123     if (floating)
124         toggle_floating(birth);
125
126     if (d->focus != NULL && d->focus->client->fullscreen)
127         toggle_fullscreen(m, d->focus->client);
128
129     if (fullscreen)
130         toggle_fullscreen(m, birth->client);
131
132     if (is_tiled(c))
133         window_lower(c->window);
134
135     c->transient = transient;
136
137     if (takes_focus)
138         focus_node(m, d, birth, false);
139
140     xcb_rectangle_t *frect = &birth->client->floating_rectangle;
141     if (frect->x == 0 && frect->y == 0)
142         center(m->rectangle, frect);
143
144     fit_monitor(m, birth->client);
145
146     arrange(m, d);
147
148     if (d == m->desk && visible)
149         window_show(c->window);
150
151     if (takes_focus)
152         xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
153
154     uint32_t values[] = {CLIENT_EVENT_MASK};
155     xcb_change_window_attributes(dpy, c->window, XCB_CW_EVENT_MASK, values);
156
157     num_clients++;
158     ewmh_set_wm_desktop(birth, d);
159     ewmh_update_client_list();
160 }
161
162 void adopt_orphans(void)
163 {
164     xcb_query_tree_reply_t *qtr = xcb_query_tree_reply(dpy, xcb_query_tree(dpy, screen->root), NULL);
165     if (qtr == NULL)
166         return;
167     int len = xcb_query_tree_children_length(qtr);
168     xcb_window_t *wins = xcb_query_tree_children(qtr);
169     for (int i = 0; i < len; i++) {
170         uint32_t idx;
171         xcb_window_t win = wins[i];
172         window_hide(win);
173         if (xcb_ewmh_get_wm_desktop_reply(ewmh, xcb_ewmh_get_wm_desktop(ewmh, win), &idx, NULL) == 1) {
174             desktop_location_t loc;
175             if (ewmh_locate_desktop(idx, &loc))
176                 manage_window(loc.monitor, loc.desktop, win);
177             else
178                 manage_window(mon, mon->desk, win);
179         }
180     }
181     free(qtr);
182 }
183
184 void window_draw_border(node_t *n, bool focused_window, bool focused_monitor)
185 {
186     if (n == NULL)
187         return;
188
189     if (border_width < 1 || n->client->border_width < 1)
190         return;
191
192     xcb_window_t win = n->client->window;
193
194     xcb_rectangle_t actual_rectangle = (is_tiled(n->client) ? n->client->tiled_rectangle : n->client->floating_rectangle);
195
196     uint16_t width = actual_rectangle.width;
197     uint16_t height = actual_rectangle.height;
198
199     uint16_t full_width = width + 2 * border_width;
200     uint16_t full_height = height + 2 * border_width;
201
202     xcb_rectangle_t inner_rectangles[] =
203     {
204         { width, 0, 2 * border_width, height + 2 * border_width },
205         { 0, height, width + 2 * border_width, 2 * border_width }
206     };
207
208     xcb_rectangle_t main_rectangles[] =
209     {
210         { width + inner_border_width, 0, 2 * (main_border_width + outer_border_width), height + 2 * border_width },
211         { 0, height + inner_border_width, width + 2 * border_width, 2 * (main_border_width + outer_border_width) }
212     };
213
214     xcb_rectangle_t outer_rectangles[] =
215     {
216         { width + inner_border_width + main_border_width, 0, 2 * outer_border_width, height + 2 * border_width },
217         { 0, height + inner_border_width + main_border_width, width + 2 * border_width, 2 * outer_border_width }
218     };
219
220     xcb_rectangle_t *presel_rectangles;
221
222     xcb_pixmap_t pix = xcb_generate_id(dpy);
223     xcb_create_pixmap(dpy, root_depth, pix, win, full_width, full_height);
224
225     xcb_gcontext_t gc = xcb_generate_id(dpy);
226     xcb_create_gc(dpy, gc, pix, 0, NULL);
227
228     uint32_t main_border_color_pxl = get_main_border_color(n->client, focused_window, focused_monitor);
229
230     /* inner border */
231     if (inner_border_width > 0) {
232         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &inner_border_color_pxl);
233         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(inner_rectangles), inner_rectangles);
234     }
235
236     /* main border */
237     if (main_border_width > 0) {
238         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &main_border_color_pxl);
239         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(main_rectangles), main_rectangles);
240     }
241
242     /* outer border */
243     if (outer_border_width > 0) {
244         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &outer_border_color_pxl);
245         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(outer_rectangles), outer_rectangles);
246     }
247
248     if (split_mode == MODE_MANUAL && focused_monitor && focused_window) {
249         uint16_t fence = (int16_t) (n->split_ratio * ((split_dir == DIR_UP || split_dir == DIR_DOWN) ? height : width));
250         presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
251         switch (split_dir) {
252             case DIR_UP:
253                 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
254                 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
255                 break;
256             case DIR_DOWN:
257                 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
258                 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
259                 break;
260             case DIR_LEFT:
261                 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
262                 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
263                 break;
264             case DIR_RIGHT:
265                 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
266                 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
267                 break;
268         }
269         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
270         xcb_poly_fill_rectangle(dpy, pix, gc, 2, presel_rectangles);
271         free(presel_rectangles);
272     }
273
274     /* apply border pixmap */
275     xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pix);
276
277     xcb_free_gc(dpy, gc);
278     xcb_free_pixmap(dpy, pix);
279 }
280
281 void window_close(node_t *n)
282 {
283     if (n == NULL || n->client->locked)
284         return;
285
286     PRINTF("close window %X\n", n->client->window);
287
288     xcb_atom_t WM_DELETE_WINDOW;
289     xcb_window_t win = n->client->window;
290     xcb_client_message_event_t e;
291
292     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("WM_DELETE_WINDOW"), "WM_DELETE_WINDOW"), NULL);
293     if (reply) {
294         WM_DELETE_WINDOW = reply->atom;
295         free(reply);
296     } else {
297         warn("close_window %X: could not acquire WM_DELETE_WINDOW atom\n", win);
298         return;
299     }
300
301     e.response_type = XCB_CLIENT_MESSAGE;
302     e.window = win;
303     e.format = 32;
304     e.sequence = 0;
305     e.type = ewmh->WM_PROTOCOLS;
306     e.data.data32[0] = WM_DELETE_WINDOW;
307     e.data.data32[1] = XCB_CURRENT_TIME;
308
309     xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
310 }
311
312 void window_kill(desktop_t *d, node_t *n)
313 {
314     if (n == NULL)
315         return;
316
317     PRINTF("kill window %X\n", n->client->window);
318
319     xcb_kill_client(dpy, n->client->window);
320     remove_node(d, n);
321 }
322
323 void toggle_fullscreen(monitor_t *m, client_t *c)
324 {
325     PRINTF("toggle fullscreen %X\n", c->window);
326
327     if (c->fullscreen) {
328         c->fullscreen = false;
329         xcb_atom_t values[] = {XCB_NONE};
330         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
331         if (is_tiled(c))
332             window_lower(c->window);
333     } else {
334         c->fullscreen = true;
335         xcb_atom_t values[] = {ewmh->_NET_WM_STATE_FULLSCREEN};
336         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
337         window_raise(c->window);
338         window_border_width(c->window, 0);
339         xcb_rectangle_t r = m->rectangle;
340         window_move_resize(c->window, r.x, r.y, r.width, r.height);
341     }
342     update_current();
343 }
344
345 void toggle_floating(node_t *n)
346 {
347     if (n == NULL || n->client->transient)
348         return;
349
350     PRINTF("toggle floating %X\n", n->client->window);
351
352     client_t *c = n->client;
353     c->floating = !c->floating;
354     n->vacant = !n->vacant;
355     update_vacant_state(n->parent);
356     if (c->floating)
357         window_raise(c->window);
358     else if (is_tiled(c))
359         window_lower(c->window);
360     update_current();
361 }
362
363 void toggle_locked(client_t *c)
364 {
365     PRINTF("toggle locked %X\n", c->window);
366
367     c->locked = !c->locked;
368 }
369
370 void list_windows(char *rsp)
371 {
372     char line[MAXLEN];
373
374     for (monitor_t *m = mon_head; m != NULL; m = m->next)
375         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
376             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n)) {
377                 snprintf(line, sizeof(line), "0x%X\n", n->client->window);
378                 strncat(rsp, line, REMLEN(rsp));
379             }
380 }
381
382 uint32_t get_main_border_color(client_t *c, bool focused_window, bool focused_monitor)
383 {
384     if (c == NULL)
385         return 0;
386
387     if (focused_monitor && focused_window) {
388         if (c->locked)
389             return focused_locked_border_color_pxl;
390         else
391             return focused_border_color_pxl;
392     } else if (focused_window) {
393         if (c->urgent)
394             return urgent_border_color_pxl;
395         else if (c->locked)
396             return active_locked_border_color_pxl;
397         else
398             return active_border_color_pxl;
399     } else {
400         if (c->urgent)
401             return urgent_border_color_pxl;
402         else if (c->locked)
403             return normal_locked_border_color_pxl;
404         else
405             return normal_border_color_pxl;
406     }
407 }
408
409 void update_floating_rectangle(client_t *c)
410 {
411     xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
412
413     if (geom) {
414         c->floating_rectangle = (xcb_rectangle_t) {geom->x, geom->y, geom->width, geom->height};
415         free(geom);
416     } else {
417         c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
418     }
419 }
420
421 void window_border_width(xcb_window_t win, uint32_t bw)
422 {
423     uint32_t values[] = {bw};
424     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
425 }
426
427 void window_move(xcb_window_t win, int16_t x, int16_t y)
428 {
429     uint32_t values[] = {x, y};
430     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
431 }
432
433 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
434 {
435     uint32_t values[] = {x, y, w, h};
436     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
437 }
438
439 void window_raise(xcb_window_t win)
440 {
441     uint32_t values[] = {XCB_STACK_MODE_ABOVE};
442     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
443 }
444
445 void window_pseudo_raise(desktop_t *d, xcb_window_t win)
446 {
447     for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
448         if (is_tiled(n->client) && n->client->window != win)
449             window_lower(n->client->window);
450 }
451
452 void window_lower(xcb_window_t win)
453 {
454     uint32_t values[] = {XCB_STACK_MODE_BELOW};
455     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
456 }
457
458 void window_set_visibility(xcb_window_t win, bool visible) {
459     uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
460     uint32_t values_on[] = {ROOT_EVENT_MASK};
461     xcb_change_window_attributes(dpy, screen->root, XCB_CW_EVENT_MASK, values_off);
462     if (visible)
463         xcb_map_window(dpy, win);
464     else
465         xcb_unmap_window(dpy, win);
466     xcb_change_window_attributes(dpy, screen->root, XCB_CW_EVENT_MASK, values_on);
467 }
468
469 void window_hide(xcb_window_t win)
470 {
471     window_set_visibility(win, false);
472 }
473
474 void window_show(xcb_window_t win)
475 {
476     window_set_visibility(win, true);
477 }
478
479 void toggle_visibility(void)
480 {
481     uint32_t values_off[] = {CLIENT_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW};
482     uint32_t values_on[] = {CLIENT_EVENT_MASK};
483     visible = !visible;
484     for (monitor_t *m = mon_head; m != NULL; m = m->next)
485         for (node_t *n = first_extrema(m->desk->root); n != NULL; n = next_leaf(n)) {
486             xcb_window_t win = n->client->window;
487             xcb_change_window_attributes(dpy, win, XCB_CW_EVENT_MASK, values_off);
488             window_set_visibility(win, visible);
489             xcb_change_window_attributes(dpy, win, XCB_CW_EVENT_MASK, values_on);
490         }
491     if (visible)
492         update_current();
493 }