/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*- focus_cycle.c for the Openbox window manager Copyright (c) 2006 Mikael Magnusson Copyright (c) 2003-2007 Dana Jansens This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. See the COPYING file for a copy of the GNU General Public License. */ #include "focus_cycle.h" #include "focus_cycle_indicator.h" #include "focus_cycle_popup.h" #include "client.h" #include "frame.h" #include "focus.h" #include "screen.h" #include "openbox.h" #include "debug.h" #include "group.h" #include #include ObClient *focus_cycle_target = NULL; static gboolean focus_cycle_iconic_windows; static gboolean focus_cycle_all_desktops; static gboolean focus_cycle_dock_windows; static gboolean focus_cycle_desktop_windows; static gboolean focus_target_has_siblings (ObClient *ft, gboolean iconic_windows, gboolean all_desktops); static ObClient *focus_find_directional (ObClient *c, ObDirection dir, gboolean dock_windows, gboolean desktop_windows); static ObClient *focus_find_directional (ObClient *c, ObDirection dir, gboolean dock_windows, gboolean desktop_windows); void focus_cycle_startup(gboolean reconfig) { if (reconfig) return; } void focus_cycle_shutdown(gboolean reconfig) { if (reconfig) return; } void focus_cycle_stop(ObClient *ifclient) { /* stop focus cycling if the given client is a valid focus target, and so the cycling is being disrupted */ if (focus_cycle_target && ifclient && focus_cycle_target_valid(ifclient, focus_cycle_iconic_windows, focus_cycle_all_desktops, focus_cycle_dock_windows, focus_cycle_desktop_windows)) { focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE); focus_directional_cycle(0, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE); } } /*! Returns if a focus target has valid group siblings that can be cycled to in its place */ static gboolean focus_target_has_siblings(ObClient *ft, gboolean iconic_windows, gboolean all_desktops) { GSList *it; if (!ft->group) return FALSE; for (it = ft->group->members; it; it = g_slist_next(it)) { ObClient *c = it->data; /* check that it's not a helper window to avoid infinite recursion */ if (c != ft && !client_helper(c) && focus_cycle_target_valid(c, iconic_windows, all_desktops, FALSE, FALSE)) { return TRUE; } } return FALSE; } gboolean focus_cycle_target_valid(ObClient *ft, gboolean iconic_windows, gboolean all_desktops, gboolean dock_windows, gboolean desktop_windows) { gboolean ok = FALSE; /* it's on this desktop unless you want all desktops. do this check first because it will usually filter out the most windows */ ok = (all_desktops || ft->desktop == screen_desktop || ft->desktop == DESKTOP_ALL); /* the window can receive focus somehow */ ok = ok && (ft->can_focus || ft->focus_notify); /* the window is not iconic, or we're allowed to go to iconic ones */ ok = ok && (iconic_windows || !ft->iconic); /* it's the right type of window */ if (dock_windows || desktop_windows) ok = ok && ((dock_windows && ft->type == OB_CLIENT_TYPE_DOCK) || (desktop_windows && ft->type == OB_CLIENT_TYPE_DESKTOP)); /* modal windows are important and can always get focus if they are visible and stuff, so don't change 'ok' based on their type */ else if (!ft->modal) /* normal non-helper windows are valid targets */ ok = ok && ((client_normal(ft) && !client_helper(ft)) || /* helper windows are valid targets it... */ (client_helper(ft) && /* ...a window in its group already has focus ... */ ((focus_client && ft->group == focus_client->group) || /* ... or if there are no other windows in its group that can be cycled to instead */ !focus_target_has_siblings(ft, iconic_windows, all_desktops)))); /* it's not set to skip the taskbar (unless it is a type that would be expected to set this hint, or modal) */ ok = ok && ((ft->type == OB_CLIENT_TYPE_DOCK || ft->type == OB_CLIENT_TYPE_DESKTOP || ft->type == OB_CLIENT_TYPE_TOOLBAR || ft->type == OB_CLIENT_TYPE_MENU || ft->type == OB_CLIENT_TYPE_UTILITY) || ft->modal || !ft->skip_taskbar); /* it's not going to just send fous off somewhere else (modal window) */ { ObClient *cft = client_focus_target(ft); ok = ok && (ft == cft || (cft->desktop != DESKTOP_ALL && cft->desktop != ft->desktop)); } return ok; } void focus_cycle(gboolean forward, gboolean all_desktops, gboolean dock_windows, gboolean desktop_windows, gboolean linear, gboolean interactive, gboolean dialog, gboolean done, gboolean cancel) { static ObClient *first = NULL; static ObClient *t = NULL; static GList *order = NULL; GList *it, *start, *list; ObClient *ft = NULL; if (interactive) { if (cancel) { focus_cycle_target = NULL; goto done_cycle; } else if (done) goto done_cycle; if (!focus_order) goto done_cycle; if (!first) first = focus_client; if (linear) list = client_list; else list = focus_order; } else { if (!focus_order) goto done_cycle; list = client_list; } if (focus_cycle_target == NULL) { focus_cycle_iconic_windows = TRUE; focus_cycle_all_desktops = all_desktops; focus_cycle_dock_windows = dock_windows; focus_cycle_desktop_windows = desktop_windows; focus_cycle_target = focus_client; } start = it = g_list_find(list, focus_cycle_target); if (!start) /* switched desktops or something? */ start = it = forward ? g_list_last(list) : g_list_first(list); if (!start) goto done_cycle; do { if (forward) { it = it->next; if (it == NULL) it = g_list_first(list); } else { it = it->prev; if (it == NULL) it = g_list_last(list); } ft = it->data; if (focus_cycle_target_valid(ft, focus_cycle_iconic_windows, focus_cycle_all_desktops, focus_cycle_dock_windows, focus_cycle_desktop_windows)) { if (interactive) { if (ft != focus_cycle_target) { /* prevents flicker */ focus_cycle_target = ft; focus_cycle_draw_indicator(ft); } if (dialog) /* same arguments as focus_target_valid */ focus_cycle_popup_show(ft, focus_cycle_iconic_windows, focus_cycle_all_desktops, focus_cycle_dock_windows, focus_cycle_desktop_windows); return; } else if (ft != focus_cycle_target) { focus_cycle_target = ft; done = TRUE; break; } } } while (it != start); done_cycle: if (done && focus_cycle_target) client_activate(focus_cycle_target, FALSE, TRUE); t = NULL; first = NULL; focus_cycle_target = NULL; g_list_free(order); order = NULL; if (interactive) { focus_cycle_draw_indicator(NULL); focus_cycle_popup_hide(); } return; } /* this be mostly ripped from fvwm */ static ObClient *focus_find_directional(ObClient *c, ObDirection dir, gboolean dock_windows, gboolean desktop_windows) { gint my_cx, my_cy, his_cx, his_cy; gint offset = 0; gint distance = 0; gint score, best_score; ObClient *best_client, *cur; GList *it; if(!client_list) return NULL; /* first, find the centre coords of the currently focused window */ my_cx = c->frame->area.x + c->frame->area.width / 2; my_cy = c->frame->area.y + c->frame->area.height / 2; best_score = -1; best_client = NULL; for(it = g_list_first(client_list); it; it = g_list_next(it)) { cur = it->data; /* the currently selected window isn't interesting */ if(cur == c) continue; if (!focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows, desktop_windows)) continue; /* find the centre coords of this window, from the * currently focused window's point of view */ his_cx = (cur->frame->area.x - my_cx) + cur->frame->area.width / 2; his_cy = (cur->frame->area.y - my_cy) + cur->frame->area.height / 2; if(dir == OB_DIRECTION_NORTHEAST || dir == OB_DIRECTION_SOUTHEAST || dir == OB_DIRECTION_SOUTHWEST || dir == OB_DIRECTION_NORTHWEST) { gint tx; /* Rotate the diagonals 45 degrees counterclockwise. * To do this, multiply the matrix /+h +h\ with the * vector (x y). \-h +h/ * h = sqrt(0.5). We can set h := 1 since absolute * distance doesn't matter here. */ tx = his_cx + his_cy; his_cy = -his_cx + his_cy; his_cx = tx; } switch(dir) { case OB_DIRECTION_NORTH: case OB_DIRECTION_SOUTH: case OB_DIRECTION_NORTHEAST: case OB_DIRECTION_SOUTHWEST: offset = (his_cx < 0) ? -his_cx : his_cx; distance = ((dir == OB_DIRECTION_NORTH || dir == OB_DIRECTION_NORTHEAST) ? -his_cy : his_cy); break; case OB_DIRECTION_EAST: case OB_DIRECTION_WEST: case OB_DIRECTION_SOUTHEAST: case OB_DIRECTION_NORTHWEST: offset = (his_cy < 0) ? -his_cy : his_cy; distance = ((dir == OB_DIRECTION_WEST || dir == OB_DIRECTION_NORTHWEST) ? -his_cx : his_cx); break; } /* the target must be in the requested direction */ if(distance <= 0) continue; /* Calculate score for this window. The smaller the better. */ score = distance + offset; /* windows more than 45 degrees off the direction are * heavily penalized and will only be chosen if nothing * else within a million pixels */ if(offset > distance) score += 1000000; if(best_score == -1 || score < best_score) best_client = cur, best_score = score; } return best_client; } void focus_directional_cycle(ObDirection dir, gboolean dock_windows, gboolean desktop_windows, gboolean interactive, gboolean dialog, gboolean done, gboolean cancel) { static ObClient *first = NULL; ObClient *ft = NULL; if (!interactive) return; if (cancel) { focus_cycle_target = NULL; goto done_cycle; } else if (done) goto done_cycle; if (!focus_order) goto done_cycle; if (focus_cycle_target == NULL) { focus_cycle_iconic_windows = FALSE; focus_cycle_all_desktops = FALSE; focus_cycle_dock_windows = dock_windows; focus_cycle_desktop_windows = desktop_windows; focus_cycle_target = focus_client; } if (!first) first = focus_client; if (focus_cycle_target) ft = focus_find_directional(focus_cycle_target, dir, dock_windows, desktop_windows); else { GList *it; for (it = focus_order; it; it = g_list_next(it)) if (focus_cycle_target_valid(it->data, focus_cycle_iconic_windows, focus_cycle_all_desktops, focus_cycle_dock_windows, focus_cycle_desktop_windows)) ft = it->data; } if (ft) { if (ft != focus_cycle_target) {/* prevents flicker */ focus_cycle_target = ft; focus_cycle_draw_indicator(ft); } } if (focus_cycle_target && dialog) { /* same arguments as focus_target_valid */ focus_cycle_popup_single_show(focus_cycle_target, focus_cycle_iconic_windows, focus_cycle_all_desktops, focus_cycle_dock_windows, focus_cycle_desktop_windows); return; } done_cycle: if (done && focus_cycle_target) client_activate(focus_cycle_target, FALSE, TRUE); first = NULL; focus_cycle_target = NULL; focus_cycle_draw_indicator(NULL); focus_cycle_popup_single_hide(); return; }