awesome/common/xcursor.c

/*
 * xcursor.c - X cursors management
 *
 * Copyright © 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.
 *
 */

/* CURSORFONT */
#include <X11/Xlibint.h>

#include "common/xcursor.h"
#include "common/util.h"

static char const * const xcursor_font[] =
{
    [XC_X_cursor] = "X_cursor",
    [XC_arrow] = "arrow",
    [XC_based_arrow_down] = "based_arrow_down",
    [XC_based_arrow_up] = "based_arrow_up",
    [XC_boat] = "boat",
    [XC_bogosity] = "bogosity",
    [XC_bottom_left_corner] = "bottom_left_corner",
    [XC_bottom_right_corner] = "bottom_right_corner",
    [XC_bottom_side] = "bottom_side",
    [XC_bottom_tee] = "bottom_tee",
    [XC_box_spiral] = "box_spiral",
    [XC_center_ptr] = "center_ptr",
    [XC_circle] = "circle",
    [XC_clock] = "clock",
    [XC_coffee_mug] = "coffee_mug",
    [XC_cross] = "cross",
    [XC_cross_reverse] = "cross_reverse",
    [XC_crosshair] = "crosshair",
    [XC_diamond_cross] = "diamond_cross",
    [XC_dot] = "dot",
    [XC_dotbox] = "dotbox",
    [XC_double_arrow] = "double_arrow",
    [XC_draft_large] = "draft_large",
    [XC_draft_small] = "draft_small",
    [XC_draped_box] = "draped_box",
    [XC_exchange] = "exchange",
    [XC_fleur] = "fleur",
    [XC_gobbler] = "gobbler",
    [XC_gumby] = "gumby",
    [XC_hand1] = "hand1",
    [XC_hand2] = "hand2",
    [XC_heart] = "heart",
    [XC_icon] = "icon",
    [XC_iron_cross] = "iron_cross",
    [XC_left_ptr] = "left_ptr",
    [XC_left_side] = "left_side",
    [XC_left_tee] = "left_tee",
    [XC_leftbutton] = "leftbutton",
    [XC_ll_angle] = "ll_angle",
    [XC_lr_angle] = "lr_angle",
    [XC_man] = "man",
    [XC_middlebutton] = "middlebutton",
    [XC_mouse] = "mouse",
    [XC_pencil] = "pencil",
    [XC_pirate] = "pirate",
    [XC_plus] = "plus",
    [XC_question_arrow] = "question_arrow",
    [XC_right_ptr] = "right_ptr",
    [XC_right_side] = "right_side",
    [XC_right_tee] = "right_tee",
    [XC_rightbutton] = "rightbutton",
    [XC_rtl_logo] = "rtl_logo",
    [XC_sailboat] = "sailboat",
    [XC_sb_down_arrow] = "sb_down_arrow",
    [XC_sb_h_double_arrow] = "sb_h_double_arrow",
    [XC_sb_left_arrow] = "sb_left_arrow",
    [XC_sb_right_arrow] = "sb_right_arrow",
    [XC_sb_up_arrow] = "sb_up_arrow",
    [XC_sb_v_double_arrow] = "sb_v_double_arrow",
    [XC_shuttle] = "shuttle",
    [XC_sizing] = "sizing",
    [XC_spider] = "spider",
    [XC_spraycan] = "spraycan",
    [XC_star] = "star",
    [XC_target] = "target",
    [XC_tcross] = "tcross",
    [XC_top_left_arrow] = "top_left_arrow",
    [XC_top_left_corner] = "top_left_corner",
    [XC_top_right_corner] = "top_right_corner",
    [XC_top_side] = "top_side",
    [XC_top_tee] = "top_tee",
    [XC_trek] = "trek",
    [XC_ul_angle] = "ul_angle",
    [XC_umbrella] = "umbrella",
    [XC_ur_angle] = "ur_angle",
    [XC_watch] = "watch",
    [XC_xterm] = "xterm",
};

/** Get a cursor from a string.
 * \param s The string.
 */
uint16_t
xcursor_font_fromstr(const char *s)
{
    if(s)
        for(int i = 0; i < countof(xcursor_font); i++)
            if(xcursor_font[i] && !a_strcmp(s, xcursor_font[i]))
                return i;
    return 0;
}

/** Get a cursor name.
 * \param c The cursor.
 */
const char *
xcursor_font_tostr(uint16_t c)
{
    if(c < countof(xcursor_font))
        return xcursor_font[c];
    return NULL;
}

/** Equivalent to 'XCreateFontCursor()', error are handled by the
 * default current error handler.
 * \param conn The connection to the X server.
 * \param cursor_font Type of cursor to use.
 * \return Allocated cursor font.
 */
xcb_cursor_t
xcursor_new(xcb_connection_t *conn, uint16_t cursor_font)
{
    static xcb_font_t font = XCB_NONE;
    static xcb_cursor_t xcursor[countof(xcursor_font)];

    /* Get the font for the cursor */
    if(!font)
    {
        font = xcb_generate_id(conn);
        xcb_open_font(conn, font, sizeof(CURSORFONT) - 1, CURSORFONT);
    }

    if(!xcursor[cursor_font])
    {
        xcursor[cursor_font] = xcb_generate_id(conn);
        xcb_create_glyph_cursor(conn, xcursor[cursor_font], font, font,
                                cursor_font, cursor_font + 1,
                                0, 0, 0,
                                65535, 65535, 65535);
    }

    return xcursor[cursor_font];
}


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