pidgin/pidgin

Credit Evert Mouw for the portion of his PR that I accepted.
/* pidgin
*
* Pidgin is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* 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 02111-1301 USA
*/
/**
* SECTION:gtkstyle
* @section_id: pidgin-gtkstyle
* @short_description: <filename>gtkstyle.h</filename>
* @title: Style API
*/
#ifndef _PIDGINSTYLE_H_
#define _PIDGINSTYLE_H_
#include <gtk/gtk.h>
G_BEGIN_DECLS
/**
* pidgin_style_is_dark:
* @style: The GtkStyle in use, or NULL to use a cached version.
*
* Returns whether or not dark mode is enabled.
*
* Returns: TRUE if dark mode is enabled and foreground colours should be invertred
*/
gboolean pidgin_style_is_dark(GtkStyle *style);
/**
* pidgin_style_adjust_contrast:
* @style: The GtkStyle in use.
* @color: Color to be lightened. Transformed color will be written here.
*
* Lighten a color if dark mode is enabled.
*/
void pidgin_style_adjust_contrast(GtkStyle *style, GdkRGBA *color);
G_END_DECLS
#endif /* _PIDGINSTYLE_H_ */