/*
* _NET_WM_ICON helpers for slide puzzle game
* Copyright © 2022 Nick Bowler
*
* 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 3 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, see .
*/
#ifndef RRACE_EWMHICON_H_
#define RRACE_EWMHICON_H_
/*
* Define X_DISPLAY_MISSING to allow building without X11 (for test purposes)
*/
#if !X_DISPLAY_MISSING
# include
#else
/* Stub types to allow compilation */
typedef struct {
unsigned long pixel;
unsigned short red, green, blue;
} XColor;
#endif
/*
* Size of generated EWMH icon data (nelements argument to XChangeProperty).
*/
#define EWMH_ICON_NELEM (2+16*16 + 2+24*24 + 2+32*32 + 2+48*48)
/*
* Generate EWMH icon data based on a sequence of tile colours. Internally,
* this calls icon_tile16 and friends to draw each of the icon patterns.
*
* The sequence specifies the colour of all 9 icon tiles, beginning from the
* top left in row-major order. Each value specifies three offsets into
* the provided colour map, encoded in the same manner as icon_tile16 et al.
*
* Returns a newly-allocated buffer which is suitable for use directly with
* XChangeProperty, and should be freed by the caller.
*
* If allocation fails, a null pointer is returned.
*/
void *ewmh_icon_generate(const unsigned long *seq, const XColor *map);
#if !X_DISPLAY_MISSING
/*
* Check if the root window indicates support for EWMH icons. Returns 1 if
* supported, or 0 otherwise.
*/
int ewmh_probe_wm_icon(Widget shell);
#endif
#endif