135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*
|
|
* mousegrabber.c - mouse pointer grabbing
|
|
*
|
|
* Copyright © 2008-2009 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 <unistd.h>
|
|
|
|
#include "globalconf.h"
|
|
#include "mouse.h"
|
|
#include "mousegrabber.h"
|
|
#include "luaa.h"
|
|
#include "common/xcursor.h"
|
|
#include "common/xutil.h"
|
|
|
|
/** Grab the mouse.
|
|
* \param cursor The cursor to use while grabbing.
|
|
* \return True if mouse was grabbed.
|
|
*/
|
|
static bool
|
|
mousegrabber_grab(xcb_cursor_t cursor)
|
|
{
|
|
xcb_window_t root = globalconf.screen->root;
|
|
|
|
for(int i = 1000; i; i--)
|
|
{
|
|
xcb_grab_pointer_reply_t *grab_ptr_r;
|
|
xcb_grab_pointer_cookie_t grab_ptr_c =
|
|
xcb_grab_pointer_unchecked(globalconf.connection, false, root,
|
|
XCB_EVENT_MASK_BUTTON_PRESS
|
|
| XCB_EVENT_MASK_BUTTON_RELEASE
|
|
| XCB_EVENT_MASK_POINTER_MOTION,
|
|
XCB_GRAB_MODE_ASYNC,
|
|
XCB_GRAB_MODE_ASYNC,
|
|
root, cursor, XCB_CURRENT_TIME);
|
|
|
|
if((grab_ptr_r = xcb_grab_pointer_reply(globalconf.connection, grab_ptr_c, NULL)))
|
|
{
|
|
p_delete(&grab_ptr_r);
|
|
return true;
|
|
}
|
|
usleep(1000);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/** Grab the mouse pointer and list motions, calling callback function at each
|
|
* motion. The callback function must return a boolean value: true to
|
|
* continue grabbing, false to stop.
|
|
* The function is called with one argument:
|
|
* a table containing modifiers pointer coordinates.
|
|
*
|
|
* \param L The Lua VM state.
|
|
* \return The number of elements pushed on stack.
|
|
*
|
|
* \luastack
|
|
*
|
|
* \lparam A callback function as described above.
|
|
*/
|
|
static int
|
|
luaA_mousegrabber_run(lua_State *L)
|
|
{
|
|
if(globalconf.mousegrabber != LUA_REFNIL)
|
|
luaL_error(L, "mousegrabber already running");
|
|
|
|
uint16_t cfont = xcursor_font_fromstr(luaL_checkstring(L, 2));
|
|
|
|
if(cfont)
|
|
{
|
|
xcb_cursor_t cursor = xcursor_new(globalconf.connection, cfont);
|
|
|
|
luaA_registerfct(L, 1, &globalconf.mousegrabber);
|
|
|
|
if(!mousegrabber_grab(cursor))
|
|
{
|
|
luaA_unregister(L, &globalconf.mousegrabber);
|
|
luaL_error(L, "unable to grab mouse pointer");
|
|
}
|
|
}
|
|
else
|
|
luaA_warn(L, "invalid cursor");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Stop grabbing the mouse pointer.
|
|
* \param L The Lua VM state.
|
|
* \return The number of elements pushed on stack.
|
|
*/
|
|
int
|
|
luaA_mousegrabber_stop(lua_State *L)
|
|
{
|
|
xcb_ungrab_pointer(globalconf.connection, XCB_CURRENT_TIME);
|
|
luaA_unregister(L, &globalconf.mousegrabber);
|
|
return 0;
|
|
}
|
|
|
|
/** Check if mousegrabber is running.
|
|
* \param L The Lua VM state.
|
|
* \return The number of elements pushed on stack.
|
|
* \luastack
|
|
* \lreturn A boolean value, true if mousegrabber is running, false otherwise.
|
|
*/
|
|
static int
|
|
luaA_mousegrabber_isrunning(lua_State *L)
|
|
{
|
|
lua_pushboolean(L, globalconf.mousegrabber != LUA_REFNIL);
|
|
return 1;
|
|
}
|
|
|
|
const struct luaL_reg awesome_mousegrabber_lib[] =
|
|
{
|
|
{ "run", luaA_mousegrabber_run },
|
|
{ "stop", luaA_mousegrabber_stop },
|
|
{ "isrunning", luaA_mousegrabber_isrunning },
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|