i3
floating.c
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1 #undef I3__FILE__
2 #define I3__FILE__ "floating.c"
3 /*
4  * vim:ts=4:sw=4:expandtab
5  *
6  * i3 - an improved dynamic tiling window manager
7  * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
8  *
9  * floating.c: Floating windows.
10  *
11  */
12 #include "all.h"
13 
14 extern xcb_connection_t *conn;
15 
16 /*
17  * Calculates sum of heights and sum of widths of all currently active outputs
18  *
19  */
21  Output *output;
22  /* Use Rect to encapsulate dimensions, ignoring x/y */
23  Rect outputs_dimensions = {0, 0, 0, 0};
24  TAILQ_FOREACH(output, &outputs, outputs) {
25  outputs_dimensions.height += output->rect.height;
26  outputs_dimensions.width += output->rect.width;
27  }
28  return outputs_dimensions;
29 }
30 
37 void floating_check_size(Con *floating_con) {
38  /* Define reasonable minimal and maximal sizes for floating windows */
39  const int floating_sane_min_height = 50;
40  const int floating_sane_min_width = 75;
41  Rect floating_sane_max_dimensions;
42  Con *focused_con = con_descend_focused(floating_con);
43 
44  /* obey size increments */
45  if (focused_con->height_increment || focused_con->width_increment) {
46  Rect border_rect = con_border_style_rect(focused_con);
47 
48  /* We have to do the opposite calculations that render_con() do
49  * to get the exact size we want. */
50  border_rect.width = -border_rect.width;
51  border_rect.width += 2 * focused_con->border_width;
52  border_rect.height = -border_rect.height;
53  border_rect.height += 2 * focused_con->border_width;
54  if (con_border_style(focused_con) == BS_NORMAL)
55  border_rect.height += render_deco_height();
56 
57  if (focused_con->height_increment &&
58  floating_con->rect.height >= focused_con->base_height + border_rect.height) {
59  floating_con->rect.height -= focused_con->base_height + border_rect.height;
60  floating_con->rect.height -= floating_con->rect.height % focused_con->height_increment;
61  floating_con->rect.height += focused_con->base_height + border_rect.height;
62  }
63 
64  if (focused_con->width_increment &&
65  floating_con->rect.width >= focused_con->base_width + border_rect.width) {
66  floating_con->rect.width -= focused_con->base_width + border_rect.width;
67  floating_con->rect.width -= floating_con->rect.width % focused_con->width_increment;
68  floating_con->rect.width += focused_con->base_width + border_rect.width;
69  }
70  }
71 
72  /* Unless user requests otherwise (-1), ensure width/height do not exceed
73  * configured maxima or, if unconfigured, limit to combined width of all
74  * outputs */
75  if (config.floating_minimum_height != -1) {
77  floating_con->rect.height = max(floating_con->rect.height, floating_sane_min_height);
78  else
79  floating_con->rect.height = max(floating_con->rect.height, config.floating_minimum_height);
80  }
81  if (config.floating_minimum_width != -1) {
83  floating_con->rect.width = max(floating_con->rect.width, floating_sane_min_width);
84  else
85  floating_con->rect.width = max(floating_con->rect.width, config.floating_minimum_width);
86  }
87 
88  /* Unless user requests otherwise (-1), raise the width/height to
89  * reasonable minimum dimensions */
90  floating_sane_max_dimensions = total_outputs_dimensions();
91  if (config.floating_maximum_height != -1) {
93  floating_con->rect.height = min(floating_con->rect.height, floating_sane_max_dimensions.height);
94  else
95  floating_con->rect.height = min(floating_con->rect.height, config.floating_maximum_height);
96  }
97  if (config.floating_maximum_width != -1) {
99  floating_con->rect.width = min(floating_con->rect.width, floating_sane_max_dimensions.width);
100  else
101  floating_con->rect.width = min(floating_con->rect.width, config.floating_maximum_width);
102  }
103 }
104 
105 void floating_enable(Con *con, bool automatic) {
106  bool set_focus = (con == focused);
107 
108  if (con->parent && con->parent->type == CT_DOCKAREA) {
109  LOG("Container is a dock window, not enabling floating mode.\n");
110  return;
111  }
112 
113  if (con_is_floating(con)) {
114  LOG("Container is already in floating mode, not doing anything.\n");
115  return;
116  }
117 
118  /* 1: If the container is a workspace container, we need to create a new
119  * split-container with the same layout and make that one floating. We
120  * cannot touch the workspace container itself because floating containers
121  * are children of the workspace. */
122  if (con->type == CT_WORKSPACE) {
123  LOG("This is a workspace, creating new container around content\n");
124  if (con_num_children(con) == 0) {
125  LOG("Workspace is empty, aborting\n");
126  return;
127  }
128  /* TODO: refactor this with src/con.c:con_set_layout */
129  Con *new = con_new(NULL, NULL);
130  new->parent = con;
131  new->layout = con->layout;
132 
133  /* since the new container will be set into floating mode directly
134  * afterwards, we need to copy the workspace rect. */
135  memcpy(&(new->rect), &(con->rect), sizeof(Rect));
136 
137  Con *old_focused = TAILQ_FIRST(&(con->focus_head));
138  if (old_focused == TAILQ_END(&(con->focus_head)))
139  old_focused = NULL;
140 
141  /* 4: move the existing cons of this workspace below the new con */
142  DLOG("Moving cons\n");
143  Con *child;
144  while (!TAILQ_EMPTY(&(con->nodes_head))) {
145  child = TAILQ_FIRST(&(con->nodes_head));
146  con_detach(child);
147  con_attach(child, new, true);
148  }
149 
150  /* 4: attach the new split container to the workspace */
151  DLOG("Attaching new split to ws\n");
152  con_attach(new, con, false);
153 
154  if (old_focused)
155  con_focus(old_focused);
156 
157  con = new;
158  set_focus = false;
159  }
160 
161  /* 1: detach the container from its parent */
162  /* TODO: refactor this with tree_close() */
163  TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
164  TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
165 
166  con_fix_percent(con->parent);
167 
168  /* 2: create a new container to render the decoration on, add
169  * it as a floating window to the workspace */
170  Con *nc = con_new(NULL, NULL);
171  /* we need to set the parent afterwards instead of passing it as an
172  * argument to con_new() because nc would be inserted into the tiling layer
173  * otherwise. */
174  Con *ws = con_get_workspace(con);
175  nc->parent = ws;
176  nc->type = CT_FLOATING_CON;
177  nc->layout = L_SPLITH;
178  /* We insert nc already, even though its rect is not yet calculated. This
179  * is necessary because otherwise the workspace might be empty (and get
180  * closed in tree_close()) even though it’s not. */
181  TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
182  TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
183 
184  /* check if the parent container is empty and close it if so */
185  if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) &&
186  con_num_children(con->parent) == 0) {
187  DLOG("Old container empty after setting this child to floating, closing\n");
188  tree_close(con->parent, DONT_KILL_WINDOW, false, false);
189  }
190 
191  char *name;
192  sasprintf(&name, "[i3 con] floatingcon around %p", con);
193  x_set_name(nc, name);
194  free(name);
195 
196  /* find the height for the decorations */
197  int deco_height = render_deco_height();
198 
199  DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
200  DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height);
201  Rect zero = { 0, 0, 0, 0 };
202  nc->rect = con->geometry;
203  /* If the geometry was not set (split containers), we need to determine a
204  * sensible one by combining the geometry of all children */
205  if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
206  DLOG("Geometry not set, combining children\n");
207  Con *child;
208  TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
209  DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
210  nc->rect.width += child->geometry.width;
211  nc->rect.height = max(nc->rect.height, child->geometry.height);
212  }
213  }
214 
216 
217  /* 3: attach the child to the new parent container. We need to do this
218  * because con_border_style_rect() needs to access con->parent. */
219  con->parent = nc;
220  con->percent = 1.0;
221  con->floating = FLOATING_USER_ON;
222 
223  /* 4: set the border style as specified with new_float */
224  if (automatic)
226 
227  /* Add pixels for the decoration. */
228  Rect border_style_rect = con_border_style_rect(con);
229 
230  nc->rect.height -= border_style_rect.height;
231  nc->rect.width -= border_style_rect.width;
232 
233  /* Add some more pixels for the title bar */
234  if(con_border_style(con) == BS_NORMAL)
235  nc->rect.height += deco_height;
236 
237  /* Honor the X11 border */
238  nc->rect.height += con->border_width * 2;
239  nc->rect.width += con->border_width * 2;
240 
241  /* Some clients (like GIMP’s color picker window) get mapped
242  * to (0, 0), so we push them to a reasonable position
243  * (centered over their leader) */
244  if (nc->rect.x == 0 && nc->rect.y == 0) {
245  Con *leader;
246  if (con->window && con->window->leader != XCB_NONE &&
247  (leader = con_by_window_id(con->window->leader)) != NULL) {
248  DLOG("Centering above leader\n");
249  nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
250  nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
251  } else {
252  /* center the window on workspace as fallback */
253  nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
254  nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
255  }
256  }
257 
258  /* Sanity check: Are the coordinates on the appropriate output? If not, we
259  * need to change them */
260  Output *current_output = get_output_containing(nc->rect.x +
261  (nc->rect.width / 2), nc->rect.y + (nc->rect.height / 2));
262 
263  Con *correct_output = con_get_output(ws);
264  if (!current_output || current_output->con != correct_output) {
265  DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
266  nc->rect.x, nc->rect.y);
267 
268  /* If moving from one output to another, keep the relative position
269  * consistent (e.g. a centered dialog will remain centered). */
270  if (current_output)
271  floating_fix_coordinates(nc, &current_output->con->rect, &correct_output->rect);
272  else {
273  nc->rect.x = correct_output->rect.x;
274  nc->rect.y = correct_output->rect.y;
275  }
276  }
277 
278  DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
279 
280  /* 5: Subtract the deco_height in order to make the floating window appear
281  * at precisely the position it specified in its original geometry (which
282  * is what applications might remember). */
283  deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
284  nc->rect.y -= deco_height;
285 
286  DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
287 
288  TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
289  TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
290 
291  /* render the cons to get initial window_rect correct */
292  render_con(nc, false);
293  render_con(con, false);
294 
295  if (set_focus)
296  con_focus(con);
297 
298  /* Check if we need to re-assign it to a different workspace because of its
299  * coordinates and exit if that was done successfully. */
301  return;
302 
303  /* Sanitize coordinates: Check if they are on any output */
304  if (get_output_containing(nc->rect.x, nc->rect.y) != NULL)
305  return;
306 
307  ELOG("No output found at destination coordinates, centering floating window on current ws\n");
308  nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
309  nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
310 }
311 
312 void floating_disable(Con *con, bool automatic) {
313  if (!con_is_floating(con)) {
314  LOG("Container isn't floating, not doing anything.\n");
315  return;
316  }
317 
318  const bool set_focus = (con == focused);
319 
320  Con *ws = con_get_workspace(con);
321 
322  /* 1: detach from parent container */
323  TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
324  TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
325 
326  /* 2: kill parent container */
327  TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
328  TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
329  tree_close(con->parent, DONT_KILL_WINDOW, true, false);
330 
331  /* 3: re-attach to the parent of the currently focused con on the workspace
332  * this floating con was on */
334 
335  /* if there is no other container on this workspace, focused will be the
336  * workspace itself */
337  if (focused->type == CT_WORKSPACE)
338  con->parent = focused;
339  else con->parent = focused->parent;
340 
341  /* con_fix_percent will adjust the percent value */
342  con->percent = 0.0;
343 
344  con->floating = FLOATING_USER_OFF;
345 
346  con_attach(con, con->parent, false);
347 
348  con_fix_percent(con->parent);
349 
350  if (set_focus)
351  con_focus(con);
352 }
353 
354 /*
355  * Toggles floating mode for the given container.
356  *
357  * If the automatic flag is set to true, this was an automatic update by a change of the
358  * window class from the application which can be overwritten by the user.
359  *
360  */
361 void toggle_floating_mode(Con *con, bool automatic) {
362  /* see if the client is already floating */
363  if (con_is_floating(con)) {
364  LOG("already floating, re-setting to tiling\n");
365 
366  floating_disable(con, automatic);
367  return;
368  }
369 
370  floating_enable(con, automatic);
371 }
372 
373 /*
374  * Raises the given container in the list of floating containers
375  *
376  */
378  DLOG("Raising floating con %p / %s\n", con, con->name);
379  TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
380  TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
381 }
382 
383 /*
384  * Checks if con’s coordinates are within its workspace and re-assigns it to
385  * the actual workspace if not.
386  *
387  */
389  Output *output = get_output_containing(
390  con->rect.x + (con->rect.width / 2),
391  con->rect.y + (con->rect.height / 2));
392 
393  if (!output) {
394  ELOG("No output found at destination coordinates?\n");
395  return false;
396  }
397 
398  if (con_get_output(con) == output->con) {
399  DLOG("still the same ws\n");
400  return false;
401  }
402 
403  DLOG("Need to re-assign!\n");
404 
405  Con *content = output_get_content(output->con);
406  Con *ws = TAILQ_FIRST(&(content->focus_head));
407  DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
408  con_move_to_workspace(con, ws, false, true);
410  return true;
411 }
412 
413 DRAGGING_CB(drag_window_callback) {
414  const struct xcb_button_press_event_t *event = extra;
415 
416  /* Reposition the client correctly while moving */
417  con->rect.x = old_rect->x + (new_x - event->root_x);
418  con->rect.y = old_rect->y + (new_y - event->root_y);
419 
420  render_con(con, false);
421  x_push_node(con);
422  xcb_flush(conn);
423 
424  /* Check if we cross workspace boundaries while moving */
425  if (!floating_maybe_reassign_ws(con))
426  return;
427  /* Ensure not to warp the pointer while dragging */
428  x_set_warp_to(NULL);
429  tree_render();
430 }
431 
432 /*
433  * Called when the user clicked on the titlebar of a floating window.
434  * Calls the drag_pointer function with the drag_window callback
435  *
436  */
437 void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
438  DLOG("floating_drag_window\n");
439 
440  /* Push changes before dragging, so that the window gets raised now and not
441  * after the user releases the mouse button */
442  tree_render();
443 
444  /* Store the initial rect in case of user revert/cancel */
445  Rect initial_rect = con->rect;
446 
447  /* Drag the window */
448  drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, XCURSOR_CURSOR_MOVE, drag_window_callback, event);
449 
450  /* If the user cancelled, undo the changes. */
451  if (drag_result == DRAG_REVERT)
452  floating_reposition(con, initial_rect);
453 
454  /* If this is a scratchpad window, don't auto center it from now on. */
455  if (con->scratchpad_state == SCRATCHPAD_FRESH)
456  con->scratchpad_state = SCRATCHPAD_CHANGED;
457 
458  tree_render();
459 }
460 
461 /*
462  * This is an ugly data structure which we need because there is no standard
463  * way of having nested functions (only available as a gcc extension at the
464  * moment, clang doesn’t support it) or blocks (only available as a clang
465  * extension and only on Mac OS X systems at the moment).
466  *
467  */
470  const bool proportional;
471  const xcb_button_press_event_t *event;
472 };
473 
474 DRAGGING_CB(resize_window_callback) {
475  const struct resize_window_callback_params *params = extra;
476  const xcb_button_press_event_t *event = params->event;
477  border_t corner = params->corner;
478 
479  int32_t dest_x = con->rect.x;
480  int32_t dest_y = con->rect.y;
481  uint32_t dest_width;
482  uint32_t dest_height;
483 
484  double ratio = (double) old_rect->width / old_rect->height;
485 
486  /* First guess: We resize by exactly the amount the mouse moved,
487  * taking into account in which corner the client was grabbed */
488  if (corner & BORDER_LEFT)
489  dest_width = old_rect->width - (new_x - event->root_x);
490  else dest_width = old_rect->width + (new_x - event->root_x);
491 
492  if (corner & BORDER_TOP)
493  dest_height = old_rect->height - (new_y - event->root_y);
494  else dest_height = old_rect->height + (new_y - event->root_y);
495 
496  /* User wants to keep proportions, so we may have to adjust our values */
497  if (params->proportional) {
498  dest_width = max(dest_width, (int) (dest_height * ratio));
499  dest_height = max(dest_height, (int) (dest_width / ratio));
500  }
501 
502  con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
503 
504  /* Obey window size */
505  floating_check_size(con);
506 
507  /* If not the lower right corner is grabbed, we must also reposition
508  * the client by exactly the amount we resized it */
509  if (corner & BORDER_LEFT)
510  dest_x = old_rect->x + (old_rect->width - con->rect.width);
511 
512  if (corner & BORDER_TOP)
513  dest_y = old_rect->y + (old_rect->height - con->rect.height);
514 
515  con->rect.x = dest_x;
516  con->rect.y = dest_y;
517 
518  /* TODO: don’t re-render the whole tree just because we change
519  * coordinates of a floating window */
520  tree_render();
522 }
523 
524 /*
525  * Called when the user clicked on a floating window while holding the
526  * floating_modifier and the right mouse button.
527  * Calls the drag_pointer function with the resize_window callback
528  *
529  */
531  const xcb_button_press_event_t *event) {
532  DLOG("floating_resize_window\n");
533 
534  /* corner saves the nearest corner to the original click. It contains
535  * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
536  border_t corner = 0;
537 
538  if (event->event_x <= (con->rect.width / 2))
539  corner |= BORDER_LEFT;
540  else corner |= BORDER_RIGHT;
541 
542  int cursor = 0;
543  if (event->event_y <= (con->rect.height / 2)) {
544  corner |= BORDER_TOP;
545  cursor = (corner & BORDER_LEFT) ?
547  }
548  else {
549  corner |= BORDER_BOTTOM;
550  cursor = (corner & BORDER_LEFT) ?
552  }
553 
554  struct resize_window_callback_params params = { corner, proportional, event };
555 
556  /* get the initial rect in case of revert/cancel */
557  Rect initial_rect = con->rect;
558 
559  drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, cursor, resize_window_callback, &params);
560 
561  /* If the user cancels, undo the resize */
562  if (drag_result == DRAG_REVERT)
563  floating_reposition(con, initial_rect);
564 
565  /* If this is a scratchpad window, don't auto center it from now on. */
566  if (con->scratchpad_state == SCRATCHPAD_FRESH)
567  con->scratchpad_state = SCRATCHPAD_CHANGED;
568 }
569 
570 /*
571  * This function grabs your pointer and keyboard and lets you drag stuff around
572  * (borders). Every time you move your mouse, an XCB_MOTION_NOTIFY event will
573  * be received and the given callback will be called with the parameters
574  * specified (client, border on which the click originally was), the original
575  * rect of the client, the event and the new coordinates (x, y).
576  *
577  */
578 drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t
579  confine_to, border_t border, int cursor, callback_t callback, const void *extra)
580 {
581  uint32_t new_x, new_y;
582  Rect old_rect = { 0, 0, 0, 0 };
583  if (con != NULL)
584  memcpy(&old_rect, &(con->rect), sizeof(Rect));
585 
586  xcb_cursor_t xcursor = (cursor && xcursor_supported) ?
587  xcursor_get_cursor(cursor) : XCB_NONE;
588 
589  /* Grab the pointer */
590  xcb_grab_pointer_cookie_t cookie;
591  xcb_grab_pointer_reply_t *reply;
592  cookie = xcb_grab_pointer(conn,
593  false, /* get all pointer events specified by the following mask */
594  root, /* grab the root window */
595  XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
596  XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
597  XCB_GRAB_MODE_ASYNC, /* keyboard mode */
598  confine_to, /* confine_to = in which window should the cursor stay */
599  xcursor, /* possibly display a special cursor */
600  XCB_CURRENT_TIME);
601 
602  if ((reply = xcb_grab_pointer_reply(conn, cookie, NULL)) == NULL) {
603  ELOG("Could not grab pointer\n");
604  return DRAG_ABORT;
605  }
606 
607  free(reply);
608 
609  /* Grab the keyboard */
610  xcb_grab_keyboard_cookie_t keyb_cookie;
611  xcb_grab_keyboard_reply_t *keyb_reply;
612 
613  keyb_cookie = xcb_grab_keyboard(conn,
614  false, /* get all keyboard events */
615  root, /* grab the root window */
616  XCB_CURRENT_TIME,
617  XCB_GRAB_MODE_ASYNC, /* continue processing pointer events as normal */
618  XCB_GRAB_MODE_ASYNC /* keyboard mode */
619  );
620 
621  if ((keyb_reply = xcb_grab_keyboard_reply(conn, keyb_cookie, NULL)) == NULL) {
622  ELOG("Could not grab keyboard\n");
623  return DRAG_ABORT;
624  }
625 
626  free(keyb_reply);
627 
628  /* Go into our own event loop */
629  xcb_flush(conn);
630 
631  xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
632  Con *inside_con = NULL;
633 
634  drag_result_t drag_result = DRAGGING;
635  /* I’ve always wanted to have my own eventhandler… */
636  while (drag_result == DRAGGING && (inside_event = xcb_wait_for_event(conn))) {
637  /* We now handle all events we can get using xcb_poll_for_event */
638  do {
639  /* skip x11 errors */
640  if (inside_event->response_type == 0) {
641  free(inside_event);
642  continue;
643  }
644  /* Strip off the highest bit (set if the event is generated) */
645  int type = (inside_event->response_type & 0x7F);
646 
647  switch (type) {
648  case XCB_BUTTON_RELEASE:
649  drag_result = DRAG_SUCCESS;
650  break;
651 
652  case XCB_MOTION_NOTIFY:
653  /* motion_notify events are saved for later */
654  FREE(last_motion_notify);
655  last_motion_notify = inside_event;
656  break;
657 
658  case XCB_UNMAP_NOTIFY:
659  inside_con = con_by_window_id(((xcb_unmap_notify_event_t*)inside_event)->window);
660 
661  if (inside_con != NULL) {
662  DLOG("UnmapNotify for window 0x%08x (container %p)\n", ((xcb_unmap_notify_event_t*)inside_event)->window, inside_con);
663 
664  if (con_get_workspace(inside_con) == con_get_workspace(focused)) {
665  DLOG("UnmapNotify for a managed window on the current workspace, aborting\n");
666  drag_result = DRAG_ABORT;
667  }
668  }
669 
670  handle_event(type, inside_event);
671  break;
672 
673  case XCB_KEY_PRESS:
674  /* Cancel the drag if a key was pressed */
675  DLOG("A key was pressed during drag, reverting changes.");
676  drag_result = DRAG_REVERT;
677 
678  handle_event(type, inside_event);
679  break;
680 
681  default:
682  DLOG("Passing to original handler\n");
683  /* Use original handler */
684  handle_event(type, inside_event);
685  break;
686  }
687  if (last_motion_notify != inside_event)
688  free(inside_event);
689  } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
690 
691  if (last_motion_notify == NULL || drag_result != DRAGGING)
692  continue;
693 
694  new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
695  new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
696 
697  callback(con, &old_rect, new_x, new_y, extra);
698  FREE(last_motion_notify);
699  }
700 
701  xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
702  xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
703 
704  xcb_flush(conn);
705 
706  return drag_result;
707 }
708 
709 /*
710  * Repositions the CT_FLOATING_CON to have the coordinates specified by
711  * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
712  * the floating con to a different workspace if this move was across different
713  * outputs.
714  *
715  */
716 void floating_reposition(Con *con, Rect newrect) {
717  /* Sanity check: Are the new coordinates on any output? If not, we
718  * ignore that request. */
719  if (!contained_by_output(newrect)) {
720  ELOG("No output found at destination coordinates. Not repositioning.\n");
721  return;
722  }
723 
724  con->rect = newrect;
725 
727 
728  /* If this is a scratchpad window, don't auto center it from now on. */
729  if (con->scratchpad_state == SCRATCHPAD_FRESH)
730  con->scratchpad_state = SCRATCHPAD_CHANGED;
731 
732  tree_render();
733 }
734 
735 /*
736  * Fixes the coordinates of the floating window whenever the window gets
737  * reassigned to a different output (or when the output’s rect changes).
738  *
739  */
740 void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
741  DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n",
742  con, con->rect.x, con->rect.y, con->rect.width, con->rect.height);
743  DLOG("old_rect = (%d, %d), %d x %d\n",
744  old_rect->x, old_rect->y, old_rect->width, old_rect->height);
745  DLOG("new_rect = (%d, %d), %d x %d\n",
746  new_rect->x, new_rect->y, new_rect->width, new_rect->height);
747  /* First we get the x/y coordinates relative to the x/y coordinates
748  * of the output on which the window is on */
749  int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2);
750  int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2);
751  /* Then we calculate a fraction, for example 0.63 for a window
752  * which is at y = 1212 of a 1920 px high output */
753  DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
754  rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height,
755  old_rect->width, old_rect->height);
756  /* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */
757  con->rect.x = (int32_t)new_rect->x + (double)(rel_x * (int32_t)new_rect->width)
758  / (int32_t)old_rect->width - (int32_t)(con->rect.width / 2);
759  con->rect.y = (int32_t)new_rect->y + (double)(rel_y * (int32_t)new_rect->height)
760  / (int32_t)old_rect->height - (int32_t)(con->rect.height / 2);
761  DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
762 }
763 
764 #if 0
765 /*
766  * Moves the client 10px to the specified direction.
767  *
768  */
769 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
770  DLOG("floating move\n");
771 
772  Rect destination = currently_focused->rect;
773  Rect *screen = &(currently_focused->workspace->output->rect);
774 
775  switch (direction) {
776  case D_LEFT:
777  destination.x -= 10;
778  break;
779  case D_RIGHT:
780  destination.x += 10;
781  break;
782  case D_UP:
783  destination.y -= 10;
784  break;
785  case D_DOWN:
786  destination.y += 10;
787  break;
788  /* to make static analyzers happy */
789  default:
790  break;
791  }
792 
793  /* Prevent windows from vanishing completely */
794  if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
795  (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
796  (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
797  (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
798  DLOG("boundary check failed, not moving\n");
799  return;
800  }
801 
802  currently_focused->rect = destination;
803  reposition_client(conn, currently_focused);
804 
805  /* Because reposition_client does not send a faked configure event (only resize does),
806  * we need to initiate that on our own */
807  fake_absolute_configure_notify(conn, currently_focused);
808  /* fake_absolute_configure_notify flushes */
809 }
810 
811 /*
812  * Hides all floating clients (or show them if they are currently hidden) on
813  * the specified workspace.
814  *
815  */
816 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
817  Client *client;
818 
819  workspace->floating_hidden = !workspace->floating_hidden;
820  DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
821  TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
822  if (workspace->floating_hidden)
823  client_unmap(conn, client);
824  else client_map(conn, client);
825  }
826 
827  /* If we just unmapped all floating windows we should ensure that the focus
828  * is set correctly, that ist, to the first non-floating client in stack */
829  if (workspace->floating_hidden)
830  SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
831  if (client_is_floating(client))
832  continue;
833  set_focus(conn, client, true);
834  return;
835  }
836 
837  xcb_flush(conn);
838 }
839 #endif