common/xcursor.c

   1 /*
   2  * xcursor.c - X cursors management
   3  *
   4  * Copyright © 2008 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 /* CURSORFONT */
  23 #include <X11/Xlibint.h>
  24
  25 #include "common/xcursor.h"
  26 #include "common/util.h"
  27
  28 static char const * const xcursor_font[] =
  29 {
  30     [XC_X_cursor] = "X_cursor",
  31     [XC_arrow] = "arrow",
  32     [XC_based_arrow_down] = "based_arrow_down",
  33     [XC_based_arrow_up] = "based_arrow_up",
  34     [XC_boat] = "boat",
  35     [XC_bogosity] = "bogosity",
  36     [XC_bottom_left_corner] = "bottom_left_corner",
  37     [XC_bottom_right_corner] = "bottom_right_corner",
  38     [XC_bottom_side] = "bottom_side",
  39     [XC_bottom_tee] = "bottom_tee",
  40     [XC_box_spiral] = "box_spiral",
  41     [XC_center_ptr] = "center_ptr",
  42     [XC_circle] = "circle",
  43     [XC_clock] = "clock",
  44     [XC_coffee_mug] = "coffee_mug",
  45     [XC_cross] = "cross",
  46     [XC_cross_reverse] = "cross_reverse",
  47     [XC_crosshair] = "crosshair",
  48     [XC_diamond_cross] = "diamond_cross",
  49     [XC_dot] = "dot",
  50     [XC_dotbox] = "dotbox",
  51     [XC_double_arrow] = "double_arrow",
  52     [XC_draft_large] = "draft_large",
  53     [XC_draft_small] = "draft_small",
  54     [XC_draped_box] = "draped_box",
  55     [XC_exchange] = "exchange",
  56     [XC_fleur] = "fleur",
  57     [XC_gobbler] = "gobbler",
  58     [XC_gumby] = "gumby",
  59     [XC_hand1] = "hand1",
  60     [XC_hand2] = "hand2",
  61     [XC_heart] = "heart",
  62     [XC_icon] = "icon",
  63     [XC_iron_cross] = "iron_cross",
  64     [XC_left_ptr] = "left_ptr",
  65     [XC_left_side] = "left_side",
  66     [XC_left_tee] = "left_tee",
  67     [XC_leftbutton] = "leftbutton",
  68     [XC_ll_angle] = "ll_angle",
  69     [XC_lr_angle] = "lr_angle",
  70     [XC_man] = "man",
  71     [XC_middlebutton] = "middlebutton",
  72     [XC_mouse] = "mouse",
  73     [XC_pencil] = "pencil",
  74     [XC_pirate] = "pirate",
  75     [XC_plus] = "plus",
  76     [XC_question_arrow] = "question_arrow",
  77     [XC_right_ptr] = "right_ptr",
  78     [XC_right_side] = "right_side",
  79     [XC_right_tee] = "right_tee",
  80     [XC_rightbutton] = "rightbutton",
  81     [XC_rtl_logo] = "rtl_logo",
  82     [XC_sailboat] = "sailboat",
  83     [XC_sb_down_arrow] = "sb_down_arrow",
  84     [XC_sb_h_double_arrow] = "sb_h_double_arrow",
  85     [XC_sb_left_arrow] = "sb_left_arrow",
  86     [XC_sb_right_arrow] = "sb_right_arrow",
  87     [XC_sb_up_arrow] = "sb_up_arrow",
  88     [XC_sb_v_double_arrow] = "sb_v_double_arrow",
  89     [XC_shuttle] = "shuttle",
  90     [XC_sizing] = "sizing",
  91     [XC_spider] = "spider",
  92     [XC_spraycan] = "spraycan",
  93     [XC_star] = "star",
  94     [XC_target] = "target",
  95     [XC_tcross] = "tcross",
  96     [XC_top_left_arrow] = "top_left_arrow",
  97     [XC_top_left_corner] = "top_left_corner",
  98     [XC_top_right_corner] = "top_right_corner",
  99     [XC_top_side] = "top_side",
 100     [XC_top_tee] = "top_tee",
 101     [XC_trek] = "trek",
 102     [XC_ul_angle] = "ul_angle",
 103     [XC_umbrella] = "umbrella",
 104     [XC_ur_angle] = "ur_angle",
 105     [XC_watch] = "watch",
 106     [XC_xterm] = "xterm",
 107 };
 108
 109 /** Get a cursor from a string.
 110  * \param s The string.
 111  */
 112 uint16_t
 113 xcursor_font_fromstr(const char *s)
 114 {
 115     if(s)
 116         for(int i = 0; i < countof(xcursor_font); i++)
 117             if(xcursor_font[i] && !a_strcmp(s, xcursor_font[i]))
 118                 return i;
 119     return 0;
 120 }
 121
 122 /** Get a cursor name.
 123  * \param c The cursor.
 124  */
 125 const char *
 126 xcursor_font_tostr(uint16_t c)
 127 {
 128     if(c < countof(xcursor_font))
 129         return xcursor_font[c];
 130     return NULL;
 131 }
 132
 133 /** Equivalent to 'XCreateFontCursor()', error are handled by the
 134  * default current error handler.
 135  * \param conn The connection to the X server.
 136  * \param cursor_font Type of cursor to use.
 137  * \return Allocated cursor font.
 138  */
 139 xcb_cursor_t
 140 xcursor_new(xcb_connection_t *conn, uint16_t cursor_font)
 141 {
 142     static xcb_font_t font = XCB_NONE;
 143     static xcb_cursor_t xcursor[countof(xcursor_font)];
 144
 145     /* Get the font for the cursor */
 146     if(!font)
 147     {
 148         font = xcb_generate_id(conn);
 149         xcb_open_font(conn, font, sizeof(CURSORFONT) - 1, CURSORFONT);
 150     }
 151
 152     if(!xcursor[cursor_font])
 153     {
 154         xcursor[cursor_font] = xcb_generate_id(conn);
 155         xcb_create_glyph_cursor(conn, xcursor[cursor_font], font, font,
 156                                 cursor_font, cursor_font + 1,
 157                                 0, 0, 0,
 158                                 65535, 65535, 65535);
 159     }
 160
 161     return xcursor[cursor_font];
 162 }
 163
 164
 165 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80