root.c

   1 /*
   2  * root.c - root window management
   3  *
   4  * Copyright © 2008-2009 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <xcb/xtest.h>
  23
  24 #include "mouse.h"
  25 #include "common/xcursor.h"
  26 #include "common/tokenize.h"
  27 #include "common/xutil.h"
  28
  29 /** Send fake events. Usually the current focused client will get it.
  30  * \param L The Lua VM state.
  31  * \return The number of element pushed on stack.
  32  * \luastack
  33  * \lvalue A client.
  34  * \lparam The event type: key_press, key_release, button_press, button_release
  35  * or motion_notify.
  36  * \lparam The detail: in case of a key event, this is the keycode to send, in
  37  * case of a button event this is the number of the button. In case of a motion
  38  * event, this is a boolean value which if true make the coordinates relatives.
  39  * \lparam In case of a motion event, this is the X coordinate.
  40  * \lparam In case of a motion event, this is the Y coordinate.
  41  * \lparam In case of a motion event, this is the screen number to move on.
  42  * If not specified, the current one is used.
  43  */
  44 static int
  45 luaA_root_fake_input(lua_State *L)
  46 {
  47     if(!globalconf.have_xtest)
  48     {
  49         luaA_warn(L, "XTest extension is not available, cannot fake input.");
  50         return 0;
  51     }
  52
  53     size_t tlen;
  54     const char *stype = luaL_checklstring(L, 2, &tlen);
  55     uint8_t type, detail;
  56     int x = 0, y = 0;
  57     xcb_window_t root = XCB_NONE;
  58
  59     switch(a_tokenize(stype, tlen))
  60     {
  61       case A_TK_KEY_PRESS:
  62         type = XCB_KEY_PRESS;
  63         detail = luaL_checknumber(L, 3); /* keycode */
  64         break;
  65       case A_TK_KEY_RELEASE:
  66         type = XCB_KEY_RELEASE;
  67         detail = luaL_checknumber(L, 3); /* keycode */
  68         break;
  69       case A_TK_BUTTON_PRESS:
  70         type = XCB_BUTTON_PRESS;
  71         detail = luaL_checknumber(L, 3); /* button number */
  72         break;
  73       case A_TK_BUTTON_RELEASE:
  74         type = XCB_BUTTON_RELEASE;
  75         detail = luaL_checknumber(L, 3); /* button number */
  76         break;
  77       case A_TK_MOTION_NOTIFY:
  78         type = XCB_MOTION_NOTIFY;
  79         detail = luaA_checkboolean(L, 3); /* relative to the current position or not */
  80         x = luaL_checknumber(L, 4);
  81         y = luaL_checknumber(L, 5);
  82         if(lua_gettop(L) == 6 && !globalconf.xinerama_is_active)
  83         {
  84             int screen = luaL_checknumber(L, 6);
  85             luaA_checkscreen(screen);
  86             root = xutil_screen_get(globalconf.connection, screen)->root;
  87         }
  88         break;
  89       default:
  90         return 0;
  91     }
  92
  93     xcb_test_fake_input(globalconf.connection,
  94                         type,
  95                         detail,
  96                         XCB_CURRENT_TIME,
  97                         root,
  98                         x, y,
  99                         0);
 100     return 0;
 101 }
 102
 103 /** Get or set global key bindings.
 104  * This binding will be available when you'll press keys on root window.
 105  * \param L The Lua VM state.
 106  * \return The number of element pushed on stack.
 107  * \luastack
 108  * \lparam An array of key bindings objects, or nothing.
 109  * \lreturn The array of key bindings objects of this client.
 110  */
 111 static int
 112 luaA_root_keys(lua_State *L)
 113 {
 114     if(lua_gettop(L) == 1)
 115     {
 116         luaA_key_array_set(L, 1, &globalconf.keys);
 117
 118         int nscreen = xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
 119
 120         for(int phys_screen = 0; phys_screen < nscreen; phys_screen++)
 121         {
 122             xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen);
 123             xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 124             window_grabkeys(s->root, &globalconf.keys);
 125         }
 126     }
 127
 128     return luaA_key_array_get(L, &globalconf.keys);
 129 }
 130
 131 /** Get or set global mouse bindings.
 132  * This binding will be available when you'll click on root window.
 133  * \param L The Lua VM state.
 134  * \return The number of element pushed on stack.
 135  * \luastack
 136  * \lparam An array of mouse button bindings objects, or nothing.
 137  * \lreturn The array of mouse button bindings objects.
 138  */
 139 static int
 140 luaA_root_buttons(lua_State *L)
 141 {
 142     if(lua_gettop(L) == 1)
 143         luaA_button_array_set(L, 1, &globalconf.buttons);
 144
 145     return luaA_button_array_get(L, &globalconf.buttons);
 146 }
 147
 148 /** Set the root cursor.
 149  * \param L The Lua VM state.
 150  * \return The number of element pushed on stack.
 151  * \luastack
 152  * \lparam A X cursor name.
 153  */
 154 static int
 155 luaA_root_cursor(lua_State *L)
 156 {
 157     const char *cursor_name = luaL_checkstring(L, 1);
 158     uint16_t cursor_font = xcursor_font_fromstr(cursor_name);
 159
 160     if(cursor_font)
 161     {
 162         uint32_t change_win_vals[] = { xcursor_new(globalconf.connection, cursor_font) };
 163
 164         for(int screen_nbr = 0;
 165             screen_nbr < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
 166             screen_nbr++)
 167             xcb_change_window_attributes(globalconf.connection,
 168                                          xutil_screen_get(globalconf.connection, screen_nbr)->root,
 169                                          XCB_CW_CURSOR,
 170                                          change_win_vals);
 171     }
 172     else
 173         luaA_warn(L, "invalid cursor %s", cursor_name);
 174
 175     return 0;
 176 }
 177
 178 const struct luaL_reg awesome_root_lib[] =
 179 {
 180     { "buttons", luaA_root_buttons },
 181     { "keys", luaA_root_keys },
 182     { "cursor", luaA_root_cursor },
 183     { "fake_input", luaA_root_fake_input },
 184     { NULL, NULL }
 185 };
 186
 187 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80