/* * 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 #include #include #include #include #include "awesome.h" #include "event.h" #include "tag.h" #include "window.h" #include "ewmh.h" #include "client.h" #include "widget.h" #include "titlebar.h" #include "key.h" #include "keygrabber.h" #include "mousegrabber.h" #include "luaa.h" #include "systray.h" #include "screen.h" #include "common/atoms.h" #include "common/xutil.h" #define DO_EVENT_HOOK_CALLBACK(xcbtype, xcbeventprefix, type, arraytype, match) \ static void \ event_##xcbtype##_callback(xcb_##xcbtype##_press_event_t *ev, \ arraytype *arr, \ int nargs, \ void *data) \ { \ foreach(item, *arr) \ if(match(ev, *item, data)) \ switch(ev->response_type) \ { \ case xcbeventprefix##_PRESS: \ if((*item)->press != LUA_REFNIL) \ { \ for(int i = 0; i < nargs; i++) \ lua_pushvalue(globalconf.L, - nargs); \ luaA_dofunction_from_registry(globalconf.L, (*item)->press, nargs, 0); \ } \ break; \ case xcbeventprefix##_RELEASE: \ if((*item)->release != LUA_REFNIL) \ { \ for(int i = 0; i < nargs; i++) \ lua_pushvalue(globalconf.L, - nargs); \ luaA_dofunction_from_registry(globalconf.L, (*item)->release, nargs, 0); \ } \ break; \ } \ lua_pop(globalconf.L, nargs); \ } static bool event_button_match(xcb_button_press_event_t *ev, button_t *b, void *data) { return ((!b->button || ev->detail == b->button) && (b->mod == XCB_BUTTON_MASK_ANY || b->mod == ev->state)); } 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->mod == XCB_BUTTON_MASK_ANY || k->mod == ev->state)); } DO_EVENT_HOOK_CALLBACK(button, XCB_BUTTON, button_t, button_array_t, event_button_match) DO_EVENT_HOOK_CALLBACK(key, XCB_KEY, keyb_t, 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_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.mousegrabber); mousegrabber_handleevent(globalconf.L, x, y, mask); if(lua_pcall(globalconf.L, 1, 1, 0)) { warn("error running function: %s", lua_tostring(globalconf.L, -1)); luaA_mousegrabber_stop(globalconf.L); } else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1)) luaA_mousegrabber_stop(globalconf.L); lua_pop(globalconf.L, 1); /* pop returned value */ return true; } return false; } /** The button press event handler. * \param data The type of mouse event. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_button(void *data, xcb_connection_t *connection, xcb_button_press_event_t *ev) { int screen; const int nb_screen = xcb_setup_roots_length(xcb_get_setup(connection)); client_t *c; wibox_t *wibox; if(event_handle_mousegrabber(ev->root_x, ev->root_y, 1 << (ev->detail - 1 + 8))) return 0; /* 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((wibox = wibox_getbywin(ev->event)) || (wibox = wibox_getbywin(ev->child))) { /* If the wibox is child, then x,y are * relative to root window */ if(wibox->sw.window == ev->child) { ev->event_x -= wibox->sw.geometry.x; ev->event_y -= wibox->sw.geometry.y; } wibox_push(globalconf.L, wibox); event_button_callback(ev, &wibox->buttons, 1, NULL); /* then try to match a widget binding */ widget_t *w = widget_getbycoords(wibox->sw.orientation, &wibox->widgets, wibox->sw.geometry.width, wibox->sw.geometry.height, &ev->event_x, &ev->event_y); if(w) { widget_push(globalconf.L, w); wibox_push(globalconf.L, wibox); event_button_callback(ev, &w->buttons, 2, NULL); } } else if((c = client_getbywin(ev->event))) { client_push(globalconf.L, c); event_button_callback(ev, &c->buttons, 1, NULL); xcb_allow_events(globalconf.connection, XCB_ALLOW_REPLAY_POINTER, XCB_CURRENT_TIME); } else if(ev->child == XCB_NONE) for(screen = 0; screen < nb_screen; screen++) if(xutil_screen_get(connection, screen)->root == ev->event) { event_button_callback(ev, &globalconf.buttons, 0, NULL); return 0; } return 0; } 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 data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_configurerequest(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_configure_request_event_t *ev) { client_t *c; area_t geometry; if((c = client_getbywin(ev->window))) { geometry = titlebar_geometry_remove(c->titlebar, c->border, c->geometry); if(ev->value_mask & XCB_CONFIG_WINDOW_X) geometry.x = ev->x; if(ev->value_mask & XCB_CONFIG_WINDOW_Y) geometry.y = ev->y; if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH) geometry.width = ev->width; if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT) geometry.height = ev->height; if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) client_setborder(c, ev->border_width); /* Clients are not allowed to directly mess with stacking parameters. */ ev->value_mask &= ~(XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE); /** Configure request are sent with size relative to real (internal) * window size, i.e. without titlebars and borders. */ geometry = titlebar_geometry_add(c->titlebar, c->border, geometry); if(!client_resize(c, geometry, false)) { /* Resize wasn't officially needed, but we don't want to break expectations. */ geometry = titlebar_geometry_remove(c->titlebar, c->border, c->geometry); window_configure(c->win, geometry, c->border); } } else event_handle_configurerequest_configure_window(ev); return 0; } /** The configure notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_configurenotify(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_configure_notify_event_t *ev) { int screen_nbr; const xcb_screen_t *screen; for(screen_nbr = 0; screen_nbr < xcb_setup_roots_length(xcb_get_setup (connection)); screen_nbr++) if((screen = xutil_screen_get(connection, screen_nbr)) != NULL && ev->window == screen->root && (ev->width != screen->width_in_pixels || ev->height != screen->height_in_pixels)) /* it's not that we panic, but restart */ awesome_restart(); return 0; } /** The destroy notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_destroynotify(void *data __attribute__ ((unused)), xcb_connection_t *connection __attribute__ ((unused)), xcb_destroy_notify_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window))) client_unmanage(c); 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); widget_invalidate_bytype(widget_systray); } return 0; } /** Handle a motion notify over widgets. * \param object The object. * \param mouse_over The pointer to the registered mouse over widget. * \param widget The new widget the mouse is over. */ static void event_handle_widget_motionnotify(void *object, widget_t **mouse_over, widget_t *widget) { if(widget != *mouse_over) { if(*mouse_over) { if((*mouse_over)->mouse_leave != LUA_REFNIL) { /* call mouse leave function on old widget */ widget_push(globalconf.L, *mouse_over); luaA_dofunction_from_registry(globalconf.L, (*mouse_over)->mouse_leave, 1, 0); } } if(widget) { /* call mouse enter function on new widget and register it */ *mouse_over = widget; if(widget->mouse_enter != LUA_REFNIL) { widget_push(globalconf.L, widget); luaA_dofunction_from_registry(globalconf.L, widget->mouse_enter, 1, 0); } } } } /** The motion notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_motionnotify(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_motion_notify_event_t *ev) { wibox_t *wibox; if(event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state)) return 0; if((wibox = wibox_getbywin(ev->event))) { widget_t *w = widget_getbycoords(wibox->sw.orientation, &wibox->widgets, wibox->sw.geometry.width, wibox->sw.geometry.height, &ev->event_x, &ev->event_y); if(w) event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w); } return 0; } /** The leave notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_leavenotify(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_leave_notify_event_t *ev) { wibox_t *wibox; client_t *c; if(ev->mode != XCB_NOTIFY_MODE_NORMAL) return 0; if((c = client_getbytitlebarwin(ev->event)) || (c = client_getbywin(ev->event))) if(globalconf.hooks.mouse_leave != LUA_REFNIL) { client_push(globalconf.L, c); luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.mouse_leave, 1, 0); } if((wibox = wibox_getbywin(ev->event))) { if(wibox->mouse_over) { if(wibox->mouse_over->mouse_leave != LUA_REFNIL) { /* call mouse leave function on widget the mouse was over */ wibox_push(globalconf.L, wibox); luaA_dofunction_from_registry(globalconf.L, wibox->mouse_over->mouse_leave, 1, 0); } wibox->mouse_over = NULL; } if(wibox->mouse_leave != LUA_REFNIL) luaA_dofunction_from_registry(globalconf.L, wibox->mouse_leave, 0, 0); } return 0; } /** The enter notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_enternotify(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_enter_notify_event_t *ev) { client_t *c; wibox_t *wibox; if(ev->mode != XCB_NOTIFY_MODE_NORMAL) return 0; if((wibox = wibox_getbywin(ev->event))) { widget_t *w = widget_getbycoords(wibox->sw.orientation, &wibox->widgets, wibox->sw.geometry.width, wibox->sw.geometry.height, &ev->event_x, &ev->event_y); if(w) event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w); if(wibox->mouse_enter != LUA_REFNIL) luaA_dofunction_from_registry(globalconf.L, wibox->mouse_enter, 0, 0); } if((c = client_getbytitlebarwin(ev->event)) || (c = client_getbywin(ev->event))) if(globalconf.hooks.mouse_enter != LUA_REFNIL) { client_push(globalconf.L, c); luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.mouse_enter, 1, 0); } return 0; } /** The focus in event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_focusin(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_focus_in_event_t *ev) { client_t *c; /* 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: if((c = client_getbytitlebarwin(ev->event)) || (c = client_getbywin(ev->event))) client_focus_update(c); /* all other events are ignored */ default: break; } return 0; } /** The expose event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_expose(void *data __attribute__ ((unused)), xcb_connection_t *connection __attribute__ ((unused)), xcb_expose_event_t *ev) { wibox_t *wibox; if((wibox = wibox_getbywin(ev->window))) simplewindow_refresh_pixmap_partial(&wibox->sw, ev->x, ev->y, ev->width, ev->height); return 0; } /** The key press event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_key(void *data __attribute__ ((unused)), xcb_connection_t *connection __attribute__ ((unused)), xcb_key_press_event_t *ev) { if(globalconf.keygrabber != LUA_REFNIL) { lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber); if(keygrabber_handlekpress(globalconf.L, ev)) { if(lua_pcall(globalconf.L, 3, 1, 0)) { warn("error running function: %s", lua_tostring(globalconf.L, -1)); luaA_keygrabber_stop(globalconf.L); } else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1)) luaA_keygrabber_stop(globalconf.L); } lua_pop(globalconf.L, 1); /* pop returned value or function if not called */ } else { /* get keysym ignoring all modifiers */ xcb_keysym_t keysym = key_getkeysym(ev->detail, 0); client_t *c; if((c = client_getbywin(ev->event))) { client_push(globalconf.L, c); event_key_callback(ev, &c->keys, 1, &keysym); } else event_key_callback(ev, &globalconf.keys, 0, &keysym); } return 0; } /** The map request event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_maprequest(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_map_request_event_t *ev) { int phys_screen, ret = 0; client_t *c; 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(connection, ev->window); if(!(wa_r = xcb_get_window_attributes_reply(connection, wa_c, NULL))) return -1; if(wa_r->override_redirect) goto bailout; if(xembed_getbywin(&globalconf.embedded, ev->window)) { xcb_map_window(connection, ev->window); xembed_window_activate(connection, ev->window); } else if((c = client_getbywin(ev->window))) { /* Check that it may be visible, but not asked to be hidden */ if(client_maybevisible(c, c->screen) && !c->ishidden) { client_setminimized(c, false); /* it will be raised, so just update ourself */ client_raise(c); } } else { geom_c = xcb_get_geometry_unchecked(connection, ev->window); if(!(geom_r = xcb_get_geometry_reply(connection, geom_c, NULL))) { ret = -1; goto bailout; } phys_screen = xutil_root2screen(connection, geom_r->root); client_manage(ev->window, geom_r, phys_screen, false); p_delete(&geom_r); } bailout: p_delete(&wa_r); return ret; } /** The unmap notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_unmapnotify(void *data __attribute__ ((unused)), xcb_connection_t *connection, xcb_unmap_notify_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window))) { if(ev->event == xutil_screen_get(connection, c->phys_screen)->root && XCB_EVENT_SENT(ev) && window_state_get_reply(window_state_get_unchecked(c->win)) == XCB_WM_STATE_NORMAL) client_unmanage(c); } 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); widget_invalidate_bytype(widget_systray); } return 0; } /** The randr screen change notify event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_randr_screen_change_notify(void *data __attribute__ ((unused)), xcb_connection_t *connection __attribute__ ((unused)), xcb_randr_screen_change_notify_event_t *ev) { /* Code of XRRUpdateConfiguration Xlib function ported to XCB * (only the code relevant to RRScreenChangeNotify) as the latter * doesn't provide this kind of function */ if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270)) xcb_randr_set_screen_size(connection, ev->root, ev->height, ev->width, ev->mheight, ev->mwidth); else xcb_randr_set_screen_size(connection, ev->root, ev->width, ev->height, ev->mwidth, ev->mheight); /* XRRUpdateConfiguration also executes the following instruction * but it's not useful because SubpixelOrder is not used at all at * the moment * * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order); */ awesome_restart(); return 0; } /** The client message event handler. * \param data currently unused. * \param connection The connection to the X server. * \param ev The event. */ static int event_handle_clientmessage(void *data __attribute__ ((unused)), xcb_connection_t *connection, 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 0; if(ev->type == WM_CHANGE_STATE) { client_t *c; if((c = client_getbywin(ev->window)) && ev->format == 32 && ev->data.data32[0] == XCB_WM_STATE_ICONIC) client_setminimized(c, true); } else if(ev->type == _XEMBED) return xembed_process_client_message(ev); else if(ev->type == _NET_SYSTEM_TRAY_OPCODE) return systray_process_client_message(ev); return ewmh_process_client_message(ev); } /** The keymap change notify event handler. * \param data Unused data. * \param connection The connection to the X server. * \param ev The event. * \return Status code, 0 if everything's fine. */ static int event_handle_mappingnotify(void *data, xcb_connection_t *connection, xcb_mapping_notify_event_t *ev) { if(ev->request == XCB_MAPPING_MODIFIER || ev->request == XCB_MAPPING_KEYBOARD) { xcb_get_modifier_mapping_cookie_t xmapping_cookie = xcb_get_modifier_mapping_unchecked(globalconf.connection); /* Free and then allocate the key symbols */ xcb_key_symbols_free(globalconf.keysyms); globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection); xutil_lock_mask_get(globalconf.connection, xmapping_cookie, globalconf.keysyms, &globalconf.numlockmask, &globalconf.shiftlockmask, &globalconf.capslockmask, &globalconf.modeswitchmask); int nscreen = xcb_setup_roots_length(xcb_get_setup(connection)); /* regrab everything */ for(int phys_screen = 0; phys_screen < nscreen; phys_screen++) { xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen); /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look weird */ xcb_ungrab_key(connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY); window_grabkeys(s->root, &globalconf.keys); } foreach(_c, globalconf.clients) { client_t *c = *_c; xcb_ungrab_key(connection, XCB_GRAB_ANY, c->win, XCB_BUTTON_MASK_ANY); window_grabkeys(c->win, &c->keys); } } return 0; } static int event_handle_reparentnotify(void *data, xcb_connection_t *connection, xcb_reparent_notify_event_t *ev) { client_t *c; if((c = client_getbywin(ev->window))) client_unmanage(c); return 0; } void a_xcb_set_event_handlers(void) { const xcb_query_extension_reply_t *randr_query; xcb_event_set_button_press_handler(&globalconf.evenths, event_handle_button, NULL); xcb_event_set_button_release_handler(&globalconf.evenths, event_handle_button, NULL); xcb_event_set_configure_request_handler(&globalconf.evenths, event_handle_configurerequest, NULL); xcb_event_set_configure_notify_handler(&globalconf.evenths, event_handle_configurenotify, NULL); xcb_event_set_destroy_notify_handler(&globalconf.evenths, event_handle_destroynotify, NULL); xcb_event_set_enter_notify_handler(&globalconf.evenths, event_handle_enternotify, NULL); xcb_event_set_leave_notify_handler(&globalconf.evenths, event_handle_leavenotify, NULL); xcb_event_set_focus_in_handler(&globalconf.evenths, event_handle_focusin, NULL); xcb_event_set_motion_notify_handler(&globalconf.evenths, event_handle_motionnotify, NULL); xcb_event_set_expose_handler(&globalconf.evenths, event_handle_expose, NULL); xcb_event_set_key_press_handler(&globalconf.evenths, event_handle_key, NULL); xcb_event_set_key_release_handler(&globalconf.evenths, event_handle_key, NULL); xcb_event_set_map_request_handler(&globalconf.evenths, event_handle_maprequest, NULL); xcb_event_set_unmap_notify_handler(&globalconf.evenths, event_handle_unmapnotify, NULL); xcb_event_set_client_message_handler(&globalconf.evenths, event_handle_clientmessage, NULL); xcb_event_set_mapping_notify_handler(&globalconf.evenths, event_handle_mappingnotify, NULL); xcb_event_set_reparent_notify_handler(&globalconf.evenths, event_handle_reparentnotify, NULL); /* check for randr extension */ randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id); if(randr_query->present) xcb_event_set_handler(&globalconf.evenths, randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY, (xcb_generic_event_handler_t) event_handle_randr_screen_change_notify, NULL); } // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80