lib/tty/mouse.c

lib/tty/mouse.c
Manual pages: mc • mcdiff • mcedit • mcview
/* */
This source file includes following definitions.
show_mouse_pointer
init_mouse
enable_mouse
disable_mouse
   1 /*
   2    Mouse managing
   3 
   4    Copyright (C) 1994-2025
   5    Free Software Foundation, Inc.
   6 
   7    Written by:
   8    Andrew Borodin <aborodin@vmail.ru>, 2009.
   9 
  10    This file is part of the Midnight Commander.
  11 
  12    The Midnight Commander is free software: you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation, either version 3 of the License,
  15    or (at your option) any later version.
  16 
  17    The Midnight Commander is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21 
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  24  */
  25 
  26 /** \file mouse.c
  27  *  \brief Source: mouse managing
  28  *
  29  *  Events received by clients of this library have their coordinates 0 based
  30  */
  31 
  32 #include <config.h>
  33 
  34 #include <stdio.h>
  35 #include <sys/types.h>
  36 #include <unistd.h>
  37 
  38 #include "lib/global.h"
  39 
  40 #include "tty.h"
  41 #include "tty-internal.h"  // mouse_enabled
  42 #include "mouse.h"
  43 #include "key.h"  // define sequence
  44 
  45 /*** global variables ****************************************************************************/
  46 
  47 Mouse_Type use_mouse_p = MOUSE_NONE;
  48 gboolean mouse_enabled = FALSE;
  49 int mouse_fd =
  50     -1;  // for when gpm_fd changes to < 0 and the old one must be cleared from select_set
  51 const char *xmouse_seq;
  52 const char *xmouse_extended_seq;
  53 gboolean ncurses_key_mouse_means_extended = FALSE;
  54 
  55 /*** file scope macro definitions ****************************************************************/
  56 
  57 /*** file scope type declarations ****************************************************************/
  58 
  59 /*** file scope variables ************************************************************************/
  60 
  61 /*** file scope functions ************************************************************************/
  62 /* --------------------------------------------------------------------------------------------- */
  63 
  64 /* --------------------------------------------------------------------------------------------- */
  65 /*** public functions ****************************************************************************/
  66 /* --------------------------------------------------------------------------------------------- */
  67 
  68 void
  69 show_mouse_pointer (int x, int y)
     /*   */
  70 {
  71 #ifdef HAVE_LIBGPM
  72     if (use_mouse_p == MOUSE_GPM)
  73         Gpm_DrawPointer (x, y, gpm_consolefd);
  74 #else
  75     (void) x;
  76     (void) y;
  77 #endif
  78 }
  79 
  80 /* --------------------------------------------------------------------------------------------- */
  81 
  82 void
  83 init_mouse (void)
     /*   */
  84 {
  85     switch (use_mouse_p)
  86     {
  87 #ifdef HAVE_LIBGPM
  88     case MOUSE_NONE:
  89         use_mouse_p = MOUSE_GPM;
  90         break;
  91 #endif
  92 
  93     case MOUSE_XTERM_NORMAL_TRACKING:
  94     case MOUSE_XTERM_BUTTON_EVENT_TRACKING:
  95         if (xmouse_seq != NULL)
  96             define_sequence (MCKEY_MOUSE, xmouse_seq, MCKEY_NOACTION);
  97         if (xmouse_extended_seq != NULL)
  98             define_sequence (MCKEY_EXTENDED_MOUSE, xmouse_extended_seq, MCKEY_NOACTION);
  99         break;
 100 
 101     default:
 102         break;
 103     }
 104 
 105     enable_mouse ();
 106 }
 107 
 108 /* --------------------------------------------------------------------------------------------- */
 109 
 110 void
 111 enable_mouse (void)
     /*   */
 112 {
 113     if (mouse_enabled)
 114         return;
 115 
 116     switch (use_mouse_p)
 117     {
 118 #ifdef HAVE_LIBGPM
 119     case MOUSE_GPM:
 120     {
 121         Gpm_Connect conn;
 122 
 123         conn.eventMask = ~GPM_MOVE;
 124         conn.defaultMask = GPM_MOVE;
 125         conn.minMod = 0;
 126         conn.maxMod = 0;
 127 
 128         mouse_fd = Gpm_Open (&conn, 0);
 129         if (mouse_fd == -1)
 130         {
 131             use_mouse_p = MOUSE_NONE;
 132             return;
 133         }
 134         mouse_enabled = TRUE;
 135     }
 136     break;
 137 #endif
 138 
 139     case MOUSE_XTERM_NORMAL_TRACKING:
 140         // save old highlight mouse tracking
 141         printf (ESC_STR "[?1001s");
 142 
 143         // enable mouse tracking and SGR extended mouse reporting
 144         printf (ESC_STR "[?1000;1006h");
 145 
 146         fflush (stdout);
 147         mouse_enabled = TRUE;
 148         break;
 149 
 150     case MOUSE_XTERM_BUTTON_EVENT_TRACKING:
 151         // save old highlight mouse tracking
 152         printf (ESC_STR "[?1001s");
 153 
 154         // enable mouse tracking and SGR extended mouse reporting
 155         printf (ESC_STR "[?1002;1006h");
 156 
 157         fflush (stdout);
 158         mouse_enabled = TRUE;
 159         break;
 160 
 161     default:
 162         break;
 163     }
 164 }
 165 
 166 /* --------------------------------------------------------------------------------------------- */
 167 
 168 void
 169 disable_mouse (void)
     /*   */
 170 {
 171     if (!mouse_enabled)
 172         return;
 173 
 174     mouse_enabled = FALSE;
 175 
 176     switch (use_mouse_p)
 177     {
 178 #ifdef HAVE_LIBGPM
 179     case MOUSE_GPM:
 180         Gpm_Close ();
 181         break;
 182 #endif
 183     case MOUSE_XTERM_NORMAL_TRACKING:
 184         // disable SGR extended mouse reporting and mouse tracking
 185         printf (ESC_STR "[?1006;1000l");
 186 
 187         // restore old highlight mouse tracking
 188         printf (ESC_STR "[?1001r");
 189 
 190         fflush (stdout);
 191         break;
 192     case MOUSE_XTERM_BUTTON_EVENT_TRACKING:
 193         // disable SGR extended mouse reporting and mouse tracking
 194         printf (ESC_STR "[?1006;1002l");
 195 
 196         // restore old highlight mouse tracking
 197         printf (ESC_STR "[?1001r");
 198 
 199         fflush (stdout);
 200         break;
 201     default:
 202         break;
 203     }
 204 }
 205 
 206 /* --------------------------------------------------------------------------------------------- */
/* */
root/lib/tty/mouse.c

DEFINITIONS
