/* * event.c - event handlers * * Copyright © 2007-2008 Julien Danjou * * 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. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * */ #include "event.h" #include "awesome.h" #include "property.h" #include "objects/tag.h" #include "objects/drawin.h" #include "xwindow.h" #include "ewmh.h" #include "objects/client.h" #include "keygrabber.h" #include "mousegrabber.h" #include "luaa.h" #include "systray.h" #include "xkb.h" #include "objects/screen.h" #include "common/atoms.h" #include "common/xutil.h" #include #include #include #include #include #include #include #define DO_EVENT_HOOK_CALLBACK(type, xcbtype, xcbeventprefix, arraytype, match) \ static void \ event_##xcbtype##_callback(xcb_##xcbtype##_press_event_t *ev, \ arraytype *arr, \ lua_State *L, \ int oud, \ int nargs, \ void *data) \ { \ int abs_oud = oud < 0 ? ((lua_gettop(L) + 1) + oud) : oud; \ int item_matching = 0; \ foreach(item, *arr) \ if(match(ev, *item, data)) \ { \ if(oud) \ luaA_object_push_item(L, abs_oud, *item); \ else \ luaA_object_push(L, *item); \ item_matching++; \ } \ for(; item_matching > 0; item_matching--) \ { \ switch(ev->response_type) \ { \ case xcbeventprefix##_PRESS: \ for(int i = 0; i < nargs; i++) \ lua_pushvalue(L, - nargs - item_matching); \ luaA_object_emit_signal(L, - nargs - 1, "press", nargs); \ break; \ case xcbeventprefix##_RELEASE: \ for(int i = 0; i < nargs; i++) \ lua_pushvalue(L, - nargs - item_matching); \ luaA_object_emit_signal(L, - nargs - 1, "release", nargs); \ break; \ } \ lua_pop(L, 1); \ } \ lua_pop(L, nargs); \ } static bool event_key_match(xcb_key_press_event_t *ev, keyb_t *k, void *data) { assert(data); xcb_keysym_t keysym = *(xcb_keysym_t *) data; return (((k->keycode && ev->detail == k->keycode) || (k->keysym && keysym == k->keysym)) && (k->modifiers == XCB_BUTTON_MASK_ANY || k->modifiers == ev->state)); } static bool event_button_match(xcb_button_press_event_t *ev, button_t *b, void *data) { return ((!b->button || ev->detail == b->button) && (b->modifiers == XCB_BUTTON_MASK_ANY || b->modifiers == ev->state)); } DO_EVENT_HOOK_CALLBACK(button_t, button, XCB_BUTTON, button_array_t, event_button_match) DO_EVENT_HOOK_CALLBACK(keyb_t, key, XCB_KEY, key_array_t, event_key_match) /** Handle an event with mouse grabber if needed * \param x The x coordinate. * \param y The y coordinate. * \param mask The mask buttons. * \return True if the event was handled. */ static bool event_handle_mousegrabber(int x, int y, uint16_t mask) { if(globalconf.mousegrabber != LUA_REFNIL) { lua_State *L = globalconf_get_lua_State(); mousegrabber_handleevent(L, x, y, mask); lua_rawgeti(L, LUA_REGISTRYINDEX, globalconf.mousegrabber); if(!luaA_dofunction(L, 1, 1)) { warn("Stopping mousegrabber."); luaA_mousegrabber_stop(L); } else { if(!lua_isboolean(L, -1) || !lua_toboolean(L, -1)) luaA_mousegrabber_stop(L); lua_pop(L, 1); /* pop returned value */ } return true; } return false; } /** Emit a button signal. * The top of the lua stack has to be the object on which to emit the event. * \param L The Lua VM state. * \param ev The event to handle. */ static void event_emit_button(lua_State *L, xcb_button_press_event_t *ev) { const char *name; switch(XCB_EVENT_RESPONSE_TYPE(ev)) { case XCB_BUTTON_PRESS: name = "button::press"; break; case XCB_BUTTON_RELEASE: name = "button::release"; break; default: fatal("Invalid event type"); } /* Push the event's info */ lua_pushinteger(L, ev->event_x); lua_pushinteger(L, ev->event_y); lua_pushinteger(L, ev->detail); luaA_pushmodifiers(L, ev->state); /* And emit the signal */ luaA_object_emit_signal(L, -5, name, 4); } /** The button press event handler. * \param ev The event. */ static void event_handle_button(xcb_button_press_event_t *ev) { lua_State *L = globalconf_get_lua_State(); client_t *c; drawin_t *drawin; globalconf.timestamp = ev->time; { /* ev->state contains the state before the event. Compute the state * after the event for the mousegrabber. */ uint16_t state = ev->state, change = 1 << (ev->detail - 1 + 8); if (XCB_EVENT_RESPONSE_TYPE(ev) == XCB_BUTTON_PRESS) state |= change; else state &= ~change; if(event_handle_mousegrabber(ev->root_x, ev->root_y, state)) return; } /* ev->state is * button status (8 bits) + modifiers status (8 bits) * we don't care for button status that we get, especially on release, so * drop them */ ev->state &= 0x00ff; if((drawin = drawin_getbywin(ev->event)) || (drawin = drawin_getbywin(ev->child))) { /* If the drawin is child, then x,y are * relative to root window */ if(drawin->window == ev->child) { ev->event_x -= drawin->geometry.x + drawin->border_width; ev->event_y -= drawin->geometry.y + drawin->border_width; } /* Push the drawable */ luaA_object_push(L, drawin); luaA_object_push_item(L, -1, drawin->drawable); /* and handle the button raw button event */ event_emit_button(L, ev); lua_pop(L, 1); /* check if any button object matches */ event_button_callback(ev, &drawin->buttons, L, -1, 1, NULL); /* Either we are receiving this due to ButtonPress/Release on the root * window or because we grabbed the button on the window. In the later * case we have to call AllowEvents. * Use AsyncPointer instead of ReplayPointer so that the event is * "eaten" instead of being handled again on the root window. */ if(ev->child == XCB_NONE) xcb_allow_events(globalconf.connection, XCB_ALLOW_ASYNC_POINTER, ev->time); } else if((c = client_getbyframewin(ev->event)) || (c = client_getbywin(ev->event))) { /* For clicks inside of c->window, we get two events. Once because of a * passive grab on c->window and then again for c->frame_window. * Ignore the second event (identifiable by ev->child != XCB_NONE). */ if (ev->event != c->frame_window || ev->child == XCB_NONE) { luaA_object_push(L, c); if (c->window == ev->event) { /* Button event into the client itself (not titlebar), translate * into the frame window. */ ev->event_x += c->titlebar[CLIENT_TITLEBAR_LEFT].size; ev->event_y += c->titlebar[CLIENT_TITLEBAR_TOP].size; } /* And handle the button raw button event */ event_emit_button(L, ev); /* then check if a titlebar was "hit" */ if (c->frame_window == ev->event) { int x = ev->event_x, y = ev->event_y; drawable_t *d = client_get_drawable_offset(c, &x, &y); if (d) { /* Copy the event so that we can fake x/y */ xcb_button_press_event_t event = *ev; event.event_x = x; event.event_y = y; luaA_object_push_item(L, -1, d); event_emit_button(L, &event); lua_pop(L, 1); } } /* then check if any button objects match */ event_button_callback(ev, &c->buttons, L, -1, 1, NULL); } xcb_allow_events(globalconf.connection, XCB_ALLOW_REPLAY_POINTER, ev->time); } else if(ev->child == XCB_NONE) if(globalconf.screen->root == ev->event) { event_button_callback(ev, &globalconf.buttons, L, 0, 0, NULL); return; } } static void event_handle_configurerequest_configure_window(xcb_configure_request_event_t *ev) { uint16_t config_win_mask = 0; uint32_t config_win_vals[7]; unsigned short i = 0; if(ev->value_mask & XCB_CONFIG_WINDOW_X) { config_win_mask |= XCB_CONFIG_WINDOW_X; config_win_vals[i++] = ev->x; } if(ev->value_mask & XCB_CONFIG_WINDOW_Y) { config_win_mask |= XCB_CONFIG_WINDOW_Y; config_win_vals[i++] = ev->y; } if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH) { config_win_mask |= XCB_CONFIG_WINDOW_WIDTH; config_win_vals[i++] = ev->width; } if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT; config_win_vals[i++] = ev->height; } if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) { config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH; config_win_vals[i++] = ev->border_width; } if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING) { config_win_mask |= XCB_CONFIG_WINDOW_SIBLING; config_win_vals[i++] = ev->sibling; } if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) { config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE; config_win_vals[i++] = ev->stack_mode; } xcb_configure_window(globalconf.connection, ev->window, config_win_mask, config_win_vals); } /** The configure event handler. * \param ev The event. */ static void event_handle_configurerequest(xcb_configure_request_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window))) { area_t geometry = c->geometry; uint16_t bw = c->border_width; uint16_t tb_left = c->titlebar[CLIENT_TITLEBAR_LEFT].size; uint16_t tb_right = c->titlebar[CLIENT_TITLEBAR_RIGHT].size; uint16_t tb_top = c->titlebar[CLIENT_TITLEBAR_TOP].size; uint16_t tb_bottom = c->titlebar[CLIENT_TITLEBAR_BOTTOM].size; uint16_t deco_left = bw + tb_left; uint16_t deco_right = bw + tb_right; uint16_t deco_top = bw + tb_top; uint16_t deco_bottom = bw + tb_bottom; int16_t diff_w = 0, diff_h = 0, diff_border = 0; lua_State *L = globalconf_get_lua_State(); if(ev->value_mask & XCB_CONFIG_WINDOW_X) { geometry.x = ev->x; xwindow_translate_for_gravity(c->size_hints.win_gravity, deco_left, 0, deco_right, 0, &geometry.x, NULL); } if(ev->value_mask & XCB_CONFIG_WINDOW_Y) { geometry.y = ev->y; xwindow_translate_for_gravity(c->size_hints.win_gravity, 0, deco_top, 0, deco_bottom, NULL, &geometry.y); } if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH) { uint16_t old_w = geometry.width; geometry.width = ev->width; /* The ConfigureRequest specifies the size of the client window, we want the frame */ geometry.width += tb_left + tb_right; diff_w = geometry.width - old_w; } if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { uint16_t old_h = geometry.height; geometry.height = ev->height; /* The ConfigureRequest specifies the size of the client window, we want the frame */ geometry.height += tb_top + tb_bottom; diff_h = geometry.height - old_h; } if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) { diff_border = ev->border_width - bw; diff_h += diff_border; diff_w += diff_border; luaA_object_push(L, c); window_set_border_width(L, -1, ev->border_width); lua_pop(L, 1); } /* If the client resizes without moving itself, apply window gravity */ if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY) { int16_t diff_x = 0, diff_y = 0; xwindow_translate_for_gravity(c->size_hints.win_gravity, diff_border, diff_border, diff_w, diff_h, &diff_x, &diff_y); if(!(ev->value_mask & XCB_CONFIG_WINDOW_X)) geometry.x += diff_x; if(!(ev->value_mask & XCB_CONFIG_WINDOW_Y)) geometry.y += diff_y; } c->got_configure_request = true; /* Request the changes to be applied */ luaA_object_push(L, c); lua_pushstring(L, "ewmh"); /* context */ lua_newtable(L); /* props */ /* area, it needs to be directly in the `hints` table to comply with the "protocol" */ lua_pushstring(L, "x"); lua_pushinteger(L, geometry.x); lua_rawset(L, -3); lua_pushstring(L, "y"); lua_pushinteger(L, geometry.y); lua_rawset(L, -3); lua_pushstring(L, "width"); lua_pushinteger(L, geometry.width); lua_rawset(L, -3); lua_pushstring(L, "height"); lua_pushinteger(L, geometry.height); lua_rawset(L, -3); luaA_object_emit_signal(L, -3, "request::geometry", 2); lua_pop(L, 1); } else if (xembed_getbywin(&globalconf.embedded, ev->window)) { /* Ignore this so that systray icons cannot resize themselves. * We decide their size! * However, Xembed says that we act like a WM to the embedded window and * thus we have to send a synthetic configure notify informing the * window that its configure request was denied. */ xcb_get_geometry_cookie_t geom_cookie = xcb_get_geometry_unchecked(globalconf.connection, ev->window); xcb_translate_coordinates_cookie_t coords_cookie = xcb_translate_coordinates_unchecked(globalconf.connection, ev->window, globalconf.screen->root, 0, 0); xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(globalconf.connection, geom_cookie, NULL); xcb_translate_coordinates_reply_t *coords = xcb_translate_coordinates_reply(globalconf.connection, coords_cookie, NULL); if (geom && coords) { xwindow_configure(ev->window, (area_t) { .x = coords->dst_x, .y = coords->dst_y, .width = geom->width, .height = geom->height }, 0); } p_delete(&geom); p_delete(&coords); } else event_handle_configurerequest_configure_window(ev); } /** The configure notify event handler. * \param ev The event. */ static void event_handle_configurenotify(xcb_configure_notify_event_t *ev) { xcb_screen_t *screen = globalconf.screen; if(ev->window == screen->root) globalconf.screen_need_refresh = true; /* Copy what XRRUpdateConfiguration() would do: Update the configuration */ if(ev->window == screen->root) { screen->width_in_pixels = ev->width; screen->height_in_pixels = ev->height; } } /** The destroy notify event handler. * \param ev The event. */ static void event_handle_destroynotify(xcb_destroy_notify_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window))) client_unmanage(c, false); else for(int i = 0; i < globalconf.embedded.len; i++) if(globalconf.embedded.tab[i].win == ev->window) { xembed_window_array_take(&globalconf.embedded, i); luaA_systray_invalidate(); } } /** Record that the given drawable contains the pointer. */ void event_drawable_under_mouse(lua_State *L, int ud) { void *d; lua_pushvalue(L, ud); d = luaA_object_ref(L, -1); if (d == globalconf.drawable_under_mouse) { /* Nothing to do */ luaA_object_unref(L, d); return; } if (globalconf.drawable_under_mouse != NULL) { /* Emit leave on previous drawable */ luaA_object_push(L, globalconf.drawable_under_mouse); luaA_object_emit_signal(L, -1, "mouse::leave", 0); lua_pop(L, 1); /* Unref the previous drawable */ luaA_object_unref(L, globalconf.drawable_under_mouse); globalconf.drawable_under_mouse = NULL; } if (d != NULL) { /* Reference the drawable for leave event later */ globalconf.drawable_under_mouse = d; /* Emit enter */ luaA_object_emit_signal(L, ud, "mouse::enter", 0); } } /** The motion notify event handler. * \param ev The event. */ static void event_handle_motionnotify(xcb_motion_notify_event_t *ev) { lua_State *L = globalconf_get_lua_State(); drawin_t *w; client_t *c; globalconf.timestamp = ev->time; if(event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state)) return; if((c = client_getbyframewin(ev->event))) { luaA_object_push(L, c); lua_pushinteger(L, ev->event_x); lua_pushinteger(L, ev->event_y); luaA_object_emit_signal(L, -3, "mouse::move", 2); /* now check if a titlebar was "hit" */ int x = ev->event_x, y = ev->event_y; drawable_t *d = client_get_drawable_offset(c, &x, &y); if (d) { luaA_object_push_item(L, -1, d); event_drawable_under_mouse(L, -1); lua_pushinteger(L, x); lua_pushinteger(L, y); luaA_object_emit_signal(L, -3, "mouse::move", 2); lua_pop(L, 1); } lua_pop(L, 1); } if((w = drawin_getbywin(ev->event))) { luaA_object_push(L, w); luaA_object_push_item(L, -1, w->drawable); event_drawable_under_mouse(L, -1); lua_pushinteger(L, ev->event_x); lua_pushinteger(L, ev->event_y); luaA_object_emit_signal(L, -3, "mouse::move", 2); lua_pop(L, 2); } } /** The leave notify event handler. * \param ev The event. */ static void event_handle_leavenotify(xcb_leave_notify_event_t *ev) { lua_State *L = globalconf_get_lua_State(); client_t *c; globalconf.timestamp = ev->time; if(ev->mode != XCB_NOTIFY_MODE_NORMAL) return; /* Ignore leave with detail inferior (we were left for a window contained in * our window, so technically the pointer is still inside of this window). */ if(ev->detail != XCB_NOTIFY_DETAIL_INFERIOR && (c = client_getbyframewin(ev->event))) { luaA_object_push(L, c); luaA_object_emit_signal(L, -1, "mouse::leave", 0); lua_pop(L, 1); } lua_pushnil(L); event_drawable_under_mouse(L, -1); lua_pop(L, 1); } /** The enter notify event handler. * \param ev The event. */ static void event_handle_enternotify(xcb_enter_notify_event_t *ev) { lua_State *L = globalconf_get_lua_State(); client_t *c; drawin_t *drawin; globalconf.timestamp = ev->time; if(ev->mode != XCB_NOTIFY_MODE_NORMAL) return; if((drawin = drawin_getbywin(ev->event))) { luaA_object_push(L, drawin); luaA_object_push_item(L, -1, drawin->drawable); event_drawable_under_mouse(L, -1); lua_pop(L, 2); } if((c = client_getbyframewin(ev->event))) { luaA_object_push(L, c); /* Ignore enter with detail inferior: The pointer was previously inside * of a child window, so technically this isn't a 'real' enter. */ if (ev->detail != XCB_NOTIFY_DETAIL_INFERIOR) luaA_object_emit_signal(L, -1, "mouse::enter", 0); drawable_t *d = client_get_drawable(c, ev->event_x, ev->event_y); if (d) { luaA_object_push_item(L, -1, d); event_drawable_under_mouse(L, -1); lua_pop(L, 1); } lua_pop(L, 1); } else if (ev->event == globalconf.screen->root) { /* When there are multiple X screens with awesome running separate * instances, reset focus. */ globalconf.focus.need_update = true; } } /** The focus in event handler. * \param ev The event. */ static void event_handle_focusin(xcb_focus_in_event_t *ev) { if (ev->mode == XCB_NOTIFY_MODE_GRAB || ev->mode == XCB_NOTIFY_MODE_UNGRAB) /* Ignore focus changes due to keyboard grabs */ return; /* Events that we are interested in: */ switch(ev->detail) { /* These are events that jump between root windows. */ case XCB_NOTIFY_DETAIL_ANCESTOR: case XCB_NOTIFY_DETAIL_INFERIOR: /* These are events that jump between clients. * Virtual events ensure we always get an event on our top-level window. */ case XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL: case XCB_NOTIFY_DETAIL_NONLINEAR: { client_t *c; if((c = client_getbywin(ev->event))) { /* If there is still a pending focus change, do it now. */ client_focus_refresh(); client_focus_update(c); } } /* all other events are ignored */ default: break; } } /** The expose event handler. * \param ev The event. */ static void event_handle_expose(xcb_expose_event_t *ev) { drawin_t *drawin; client_t *client; if((drawin = drawin_getbywin(ev->window))) drawin_refresh_pixmap_partial(drawin, ev->x, ev->y, ev->width, ev->height); if ((client = client_getbyframewin(ev->window))) client_refresh_partial(client, ev->x, ev->y, ev->width, ev->height); } /** The key press event handler. * \param ev The event. */ static void event_handle_key(xcb_key_press_event_t *ev) { lua_State *L = globalconf_get_lua_State(); globalconf.timestamp = ev->time; if(globalconf.keygrabber != LUA_REFNIL) { if(keygrabber_handlekpress(L, ev)) { lua_rawgeti(L, LUA_REGISTRYINDEX, globalconf.keygrabber); if(!luaA_dofunction(L, 3, 0)) { warn("Stopping keygrabber."); luaA_keygrabber_stop(L); } } } else { /* get keysym ignoring all modifiers */ xcb_keysym_t keysym = xcb_key_symbols_get_keysym(globalconf.keysyms, ev->detail, 0); client_t *c; if((c = client_getbywin(ev->event)) || (c = client_getbynofocuswin(ev->event))) { luaA_object_push(L, c); event_key_callback(ev, &c->keys, L, -1, 1, &keysym); } else event_key_callback(ev, &globalconf.keys, L, 0, 0, &keysym); } } /** The map request event handler. * \param ev The event. */ static void event_handle_maprequest(xcb_map_request_event_t *ev) { client_t *c; xembed_window_t *em; xcb_get_window_attributes_cookie_t wa_c; xcb_get_window_attributes_reply_t *wa_r; xcb_get_geometry_cookie_t geom_c; xcb_get_geometry_reply_t *geom_r; wa_c = xcb_get_window_attributes_unchecked(globalconf.connection, ev->window); if(!(wa_r = xcb_get_window_attributes_reply(globalconf.connection, wa_c, NULL))) return; if(wa_r->override_redirect) goto bailout; if((em = xembed_getbywin(&globalconf.embedded, ev->window))) { xcb_map_window(globalconf.connection, ev->window); xembed_window_activate(globalconf.connection, ev->window, globalconf.timestamp); /* The correct way to set this is via the _XEMBED_INFO property. Neither * of the XEMBED not the systray spec talk about mapping windows. * Apparently, Qt doesn't care and does not set an _XEMBED_INFO * property. Let's simulate the XEMBED_MAPPED bit. */ em->info.flags |= XEMBED_MAPPED; luaA_systray_invalidate(); } else if((c = client_getbywin(ev->window))) { /* Check that it may be visible, but not asked to be hidden */ if(client_on_selected_tags(c) && !c->hidden) { lua_State *L = globalconf_get_lua_State(); luaA_object_push(L, c); client_set_minimized(L, -1, false); lua_pop(L, 1); /* it will be raised, so just update ourself */ client_raise(c); } } else { geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window); if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL))) { goto bailout; } client_manage(ev->window, geom_r, wa_r); p_delete(&geom_r); } bailout: p_delete(&wa_r); } /** The unmap notify event handler. * \param ev The event. */ static void event_handle_unmapnotify(xcb_unmap_notify_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window))) client_unmanage(c, true); } /** The randr screen change notify event handler. * \param ev The event. */ static void event_handle_randr_screen_change_notify(xcb_randr_screen_change_notify_event_t *ev) { /* Ignore events for other roots (do we get them at all?) */ if (ev->root != globalconf.screen->root) return; /* Do (part of) what XRRUpdateConfiguration() would do (update our state) */ if (ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270)) { globalconf.screen->width_in_pixels = ev->height; globalconf.screen->width_in_millimeters = ev->mheight; globalconf.screen->height_in_pixels = ev->width; globalconf.screen->height_in_millimeters = ev->mwidth; } else { globalconf.screen->width_in_pixels = ev->width; globalconf.screen->width_in_millimeters = ev->mwidth; globalconf.screen->height_in_pixels = ev->height; globalconf.screen->height_in_millimeters = ev->mheight;; } globalconf.screen_need_refresh = true; } /** XRandR event handler for RRNotify subtype XRROutputChangeNotifyEvent */ static void event_handle_randr_output_change_notify(xcb_randr_notify_event_t *ev) { if(ev->subCode == XCB_RANDR_NOTIFY_OUTPUT_CHANGE) { xcb_randr_output_t output = ev->u.oc.output; uint8_t connection = ev->u.oc.connection; const char *connection_str = NULL; xcb_randr_get_output_info_reply_t *info; lua_State *L = globalconf_get_lua_State(); /* The following explicitly uses XCB_CURRENT_TIME since we want to know * the final state of the connection. There could be more notification * events underway and using some "old" timestamp causes problems. */ info = xcb_randr_get_output_info_reply(globalconf.connection, xcb_randr_get_output_info_unchecked(globalconf.connection, output, XCB_CURRENT_TIME), NULL); if(!info) return; switch(connection) { case XCB_RANDR_CONNECTION_CONNECTED: connection_str = "Connected"; break; case XCB_RANDR_CONNECTION_DISCONNECTED: connection_str = "Disconnected"; break; default: connection_str = "Unknown"; break; } lua_pushlstring(L, (char *)xcb_randr_get_output_info_name(info), xcb_randr_get_output_info_name_length(info)); lua_pushstring(L, connection_str); signal_object_emit(L, &global_signals, "screen::change", 2); p_delete(&info); /* The docs for RRSetOutputPrimary say we get this signal */ screen_update_primary(); } } /** The shape notify event handler. * \param ev The event. */ static void event_handle_shape_notify(xcb_shape_notify_event_t *ev) { client_t *c = client_getbywin(ev->affected_window); if (c) { lua_State *L = globalconf_get_lua_State(); luaA_object_push(L, c); if (ev->shape_kind == XCB_SHAPE_SK_BOUNDING) luaA_object_emit_signal(L, -1, "property::shape_client_bounding", 0); if (ev->shape_kind == XCB_SHAPE_SK_CLIP) luaA_object_emit_signal(L, -1, "property::shape_client_clip", 0); lua_pop(L, 1); } } /** The client message event handler. * \param ev The event. */ static void event_handle_clientmessage(xcb_client_message_event_t *ev) { /* check for startup notification messages */ if(sn_xcb_display_process_event(globalconf.sndisplay, (xcb_generic_event_t *) ev)) return; if(ev->type == WM_CHANGE_STATE) { client_t *c; if((c = client_getbywin(ev->window)) && ev->format == 32 && ev->data.data32[0] == XCB_ICCCM_WM_STATE_ICONIC) { lua_State *L = globalconf_get_lua_State(); luaA_object_push(L, c); client_set_minimized(L, -1, true); lua_pop(L, 1); } } else if(ev->type == _XEMBED) xembed_process_client_message(ev); else if(ev->type == _NET_SYSTEM_TRAY_OPCODE) systray_process_client_message(ev); else ewmh_process_client_message(ev); } static void event_handle_reparentnotify(xcb_reparent_notify_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window)) && c->frame_window != ev->parent) { /* Ignore reparents to the root window, they *might* be caused by * ourselves if a client quickly unmaps and maps itself again. */ if (ev->parent != globalconf.screen->root) client_unmanage(c, true); } else if (ev->parent != globalconf.systray.window) { /* Embedded window moved elsewhere, end of embedding */ for(int i = 0; i < globalconf.embedded.len; i++) if(globalconf.embedded.tab[i].win == ev->window) { xembed_window_array_take(&globalconf.embedded, i); xcb_change_save_set(globalconf.connection, XCB_SET_MODE_DELETE, ev->window); luaA_systray_invalidate(); } } } static void event_handle_selectionclear(xcb_selection_clear_event_t *ev) { if(ev->selection == globalconf.selection_atom) { warn("Lost WM_Sn selection, exiting..."); g_main_loop_quit(globalconf.loop); } } /** \brief awesome xerror function. * There's no way to check accesses to destroyed windows, thus those cases are * ignored (especially on UnmapNotify's). * \param e The error event. */ static void xerror(xcb_generic_error_t *e) { /* ignore this */ if(e->error_code == XCB_WINDOW || (e->error_code == XCB_MATCH && e->major_code == XCB_SET_INPUT_FOCUS) || (e->error_code == XCB_VALUE && e->major_code == XCB_KILL_CLIENT) || (e->error_code == XCB_MATCH && e->major_code == XCB_CONFIGURE_WINDOW)) return; warn("X error: request=%s (major %d, minor %d), error=%s (%d)", xcb_event_get_request_label(e->major_code), e->major_code, e->minor_code, xcb_event_get_error_label(e->error_code), e->error_code); return; } static bool should_ignore(xcb_generic_event_t *event) { uint8_t response_type = XCB_EVENT_RESPONSE_TYPE(event); /* Remove completed sequences */ uint32_t sequence = event->full_sequence; while (globalconf.ignore_enter_leave_events.len > 0) { uint32_t end = globalconf.ignore_enter_leave_events.tab[0].end.sequence; /* Do if (end >= sequence) break;, but handle wrap-around: The above is * equivalent to end-sequence > 0 (assuming unlimited precision). With * int32_t, this would mean that the sign bit is cleared, which means: */ if (end - sequence < UINT32_MAX / 2) break; sequence_pair_array_take(&globalconf.ignore_enter_leave_events, 0); } /* Check if this event should be ignored */ if ((response_type == XCB_ENTER_NOTIFY || response_type == XCB_LEAVE_NOTIFY) && globalconf.ignore_enter_leave_events.len > 0) { uint32_t begin = globalconf.ignore_enter_leave_events.tab[0].begin.sequence; uint32_t end = globalconf.ignore_enter_leave_events.tab[0].end.sequence; if (sequence >= begin && sequence <= end) return true; } return false; } void event_handle(xcb_generic_event_t *event) { uint8_t response_type = XCB_EVENT_RESPONSE_TYPE(event); if (should_ignore(event)) return; if(response_type == 0) { /* This is an error, not a event */ xerror((xcb_generic_error_t *) event); return; } switch(response_type) { #define EVENT(type, callback) case type: callback((void *) event); return EVENT(XCB_BUTTON_PRESS, event_handle_button); EVENT(XCB_BUTTON_RELEASE, event_handle_button); EVENT(XCB_CONFIGURE_REQUEST, event_handle_configurerequest); EVENT(XCB_CONFIGURE_NOTIFY, event_handle_configurenotify); EVENT(XCB_DESTROY_NOTIFY, event_handle_destroynotify); EVENT(XCB_ENTER_NOTIFY, event_handle_enternotify); EVENT(XCB_CLIENT_MESSAGE, event_handle_clientmessage); EVENT(XCB_EXPOSE, event_handle_expose); EVENT(XCB_FOCUS_IN, event_handle_focusin); EVENT(XCB_KEY_PRESS, event_handle_key); EVENT(XCB_KEY_RELEASE, event_handle_key); EVENT(XCB_LEAVE_NOTIFY, event_handle_leavenotify); EVENT(XCB_MAP_REQUEST, event_handle_maprequest); EVENT(XCB_MOTION_NOTIFY, event_handle_motionnotify); EVENT(XCB_PROPERTY_NOTIFY, property_handle_propertynotify); EVENT(XCB_REPARENT_NOTIFY, event_handle_reparentnotify); EVENT(XCB_UNMAP_NOTIFY, event_handle_unmapnotify); EVENT(XCB_SELECTION_CLEAR, event_handle_selectionclear); #undef EVENT } #define EXTENSION_EVENT(base, offset, callback) \ if (globalconf.event_base_ ## base != 0 \ && response_type == globalconf.event_base_ ## base + (offset)) \ callback((void *) event) EXTENSION_EVENT(randr, XCB_RANDR_SCREEN_CHANGE_NOTIFY, event_handle_randr_screen_change_notify); EXTENSION_EVENT(randr, XCB_RANDR_NOTIFY, event_handle_randr_output_change_notify); EXTENSION_EVENT(shape, XCB_SHAPE_NOTIFY, event_handle_shape_notify); EXTENSION_EVENT(xkb, 0, event_handle_xkb_notify); #undef EXTENSION_EVENT } void event_init(void) { const xcb_query_extension_reply_t *reply; reply = xcb_get_extension_data(globalconf.connection, &xcb_randr_id); if (reply && reply->present) globalconf.event_base_randr = reply->first_event; reply = xcb_get_extension_data(globalconf.connection, &xcb_shape_id); if (reply && reply->present) globalconf.event_base_shape = reply->first_event; reply = xcb_get_extension_data(globalconf.connection, &xcb_xkb_id); if (reply && reply->present) globalconf.event_base_xkb = reply->first_event; } // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80