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awesome/event.c
Uli Schlachter 7dad0b3b87 Grab buttons on the child window 
Since commit 102063dbbd, awesome is a reparenting WM. That means that we put our
own frame windows around child windows. This means that we have the option of
grabbing input events on the frame window or the child window. This commit chose
the frame window for this.

For keyboard events, this decision was already reverted in 532ec0cd90. This
commit does the same thing for mouse events.

This fixes the spurious leave/enter events that were visible on mouse clicks.
They occurred because the click activated a passive grab (all mouse events now
"belonged" to awesome). This passive grab caused the X server to inform clients
that they "lost" the mouse pointer (with the detail field set to "a grab
activated").

Fixes: https://github.com/awesomeWM/awesome/issues/427
Signed-off-by: Uli Schlachter <psychon@znc.in>
2016-05-08 17:30:01 +02:00

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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/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 <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>
#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,
XCB_CURRENT_TIME);
}
else if((c = client_getbywin(ev->event)))
{
luaA_object_push(L, c);
/* And handle the button raw button event */
event_emit_button(L, ev);
/* then 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)
{
/* 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,
XCB_CURRENT_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;
if(ev->value_mask & XCB_CONFIG_WINDOW_X)
{
int16_t diff = 0;
geometry.x = ev->x;
xwindow_translate_for_gravity(c->size_hints.win_gravity, deco_left, 0, deco_right, 0, &diff, NULL);
geometry.x += diff;
}
if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
{
int16_t diff = 0;
geometry.y = ev->y;
xwindow_translate_for_gravity(c->size_hints.win_gravity, 0, deco_top, 0, deco_bottom, NULL, &diff);
geometry.y += diff;
}
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)
{
lua_State *L = globalconf_get_lua_State();
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;
}
if(!client_resize(c, geometry, false))
/* ICCCM 4.1.5 / 4.2.3, if nothing was changed, send an event saying so */
client_send_configure(c);
}
else if (xembed_getbywin(&globalconf.embedded, ev->window))
{
/* Ignore this so that systray icons cannot resize themselves.
* We decide their size!
*/
}
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;
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(xembed_getbywin(&globalconf.embedded, ev->window))
{
xcb_map_window(globalconf.connection, ev->window);
xembed_window_activate(globalconf.connection, ev->window);
}
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);
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);
xcb_change_save_set(globalconf.connection, XCB_SET_MODE_DELETE, ev->window);
luaA_systray_invalidate();
}
}
/** 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->height_in_pixels = ev->width;
} else {
globalconf.screen->width_in_pixels = ev->width;
globalconf.screen->height_in_pixels = ev->height;
}
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 = NULL;
lua_State *L = globalconf_get_lua_State();
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);
}
/** The keymap change notify event handler.
* \param ev The event.
*/
static void
event_handle_mappingnotify(xcb_mapping_notify_event_t *ev)
{
/* Since we use XKB, we shouldn't get this event */
warn("Unexpected MappingNotify of type %d", ev->request);
}
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);
}
}
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;
}
void event_handle(xcb_generic_event_t *event)
{
uint8_t response_type = XCB_EVENT_RESPONSE_TYPE(event);
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_MAPPING_NOTIFY, event_handle_mappingnotify);
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
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