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/*
* event.c - event handlers
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
*
* 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/selection_getter.h"
#include "objects/drawin.h"
#include "objects/selection_acquire.h"
#include "objects/selection_watcher.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 <xcb/xcb.h>
#include <xcb/randr.h>
#include <xcb/shape.h>
#include <xcb/xcb_atom.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_event.h>
#include <xcb/xkb.h>
#include <xcb/xfixes.h>
#include <xcb/damage.h>
#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)))
{
lua_State *L = globalconf_get_lua_State();
if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
{
luaA_object_push(L, c);
window_set_border_width(L, -1, ev->border_width);
lua_pop(L, 1);
}
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;
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 the client resizes without moving itself, apply window gravity */
if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY)
{
xwindow_translate_for_gravity(c->size_hints.win_gravity, 0, 0, diff_w, diff_h, &geometry.x, &geometry.y);
}
if(ev->value_mask & XCB_CONFIG_WINDOW_X)
{
geometry.x = ev->x;
if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY)
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;
if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY)
xwindow_translate_for_gravity(c->size_hints.win_gravity, 0, deco_top, 0, deco_bottom, NULL, &geometry.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)
screen_schedule_refresh();
/* 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, CLIENT_UNMANAGE_DESTROYED);
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;
/*
* Ignore events with non-normal modes. Those are because a grab
* activated/deactivated. Everything will be "back to normal" after the
* grab.
*/
if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
return;
if((c = client_getbyframewin(ev->event)))
{
/* The window was left in some way, so definitely no titlebar has the
* mouse cursor.
*/
lua_pushnil(L);
event_drawable_under_mouse(L, -1);
lua_pop(L, 1);
/* If detail is inferior, it means that the cursor is now in some child
* window of our window. Thus, the titlebar was left, but now the cursor
* is in the actual child window. Thus, ignore detail=Inferior for
* leaving client windows.
*/
if(ev->detail != XCB_NOTIFY_DETAIL_INFERIOR) {
luaA_object_push(L, c);
luaA_object_emit_signal(L, -1, "mouse::leave", 0);
lua_pop(L, 1);
}
} else if(ev->detail != XCB_NOTIFY_DETAIL_INFERIOR) {
/* Some window was left. This must be a drawin. Ignore detail=Inferior,
* because this means that some child window now contains the mouse
* cursor, i.e. a systray window. Everything else is a real 'leave'.
*/
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;
/*
* Ignore events with non-normal modes. Those are because a grab
* activated/deactivated. Everything will be "back to normal" after the
* grab.
*/
if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
return;
/*
* We ignore events with detail "inferior". This detail means that the
* cursor was previously inside of a child window and now left that child
* window. For our purposes, the cursor was already inside our window
* before.
* One exception are titlebars: They are not their own window, but are
* "outside of the actual client window".
*/
if(ev->detail != XCB_NOTIFY_DETAIL_INFERIOR && (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);
/* Detail=Inferior means that a child of the frame window now contains
* the mouse cursor, i.e. the actual client now has the cursor. All
* other details mean that the client itself was really left.
*/
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);
} else {
lua_pushnil(L);
}
event_drawable_under_mouse(L, -1);
lua_pop(L, 2);
}
else if (ev->detail != XCB_NOTIFY_DETAIL_INFERIOR && 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->event == globalconf.screen->root) {
/* Received focus in for root window, refocusing the focused window */
globalconf.focus.need_update = true;
}
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, CLIENT_UNMANAGE_UNMAP);
}
/** 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;;
}
screen_schedule_refresh();
}
/** 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, CLIENT_UNMANAGE_REPARENT);
}
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);
} else
selection_handle_selectionclear(ev);
}
static void
event_handle_damage_notify(xcb_damage_notify_event_t *ev) {
if (ev->drawable == globalconf.systray.window) {
luaA_systray_invalidate();
xcb_damage_subtract(globalconf.connection, ev->damage, None, None);
}
}
/** \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;
#ifdef WITH_XCB_ERRORS
const char *major = xcb_errors_get_name_for_major_code(
globalconf.errors_ctx, e->major_code);
const char *minor = xcb_errors_get_name_for_minor_code(
globalconf.errors_ctx, e->major_code, e->minor_code);
const char *extension = NULL;
const char *error = xcb_errors_get_name_for_error(
globalconf.errors_ctx, e->error_code, &extension);
#else
const char *major = xcb_event_get_request_label(e->major_code);
const char *minor = NULL;
const char *extension = NULL;
const char *error = xcb_event_get_error_label(e->error_code);
#endif
warn("X error: request=%s%s%s (major %d, minor %d), error=%s%s%s (%d)",
major, minor == NULL ? "" : "-", NONULL(minor),
e->major_code, e->minor_code,
NONULL(extension), extension == NULL ? "" : "-", error,
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);
EVENT(XCB_SELECTION_NOTIFY, event_handle_selectionnotify);
EVENT(XCB_SELECTION_REQUEST, selection_handle_selectionrequest);
#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);
EXTENSION_EVENT(xfixes, XCB_XFIXES_SELECTION_NOTIFY, event_handle_xfixes_selection_notify);
EXTENSION_EVENT(damage, XCB_DAMAGE_NOTIFY, event_handle_damage_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;
reply = xcb_get_extension_data(globalconf.connection, &xcb_xfixes_id);
if (reply && reply->present)
globalconf.event_base_xfixes = reply->first_event;
reply = xcb_get_extension_data(globalconf.connection, &xcb_damage_id);
if (reply && reply->present)
globalconf.event_base_damage = reply->first_event;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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