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#ifndef SEEN_DISPLAY_GRAYSCALE_H
#define SEEN_DISPLAY_GRAYSCALE_H
/** \file
* Provide methods to calculate grayscale values (e.g. convert rgba value to grayscale rgba value)
*
* Author:
* Johan Engelen <goejendaagh@zonnet.nl>
*
* Copyright (C) 2011 Author
*
* Released under GNU GPL
*/
#include <gdk/gdktypes.h>
namespace Grayscale {
guint32 process(guint32 rgba);
guint32 process(guchar r, guchar g, guchar b, guchar a);
guchar luminance(guchar r, guchar g, guchar b);
const float red_factor = 0.3;
const float green_factor = 0.59;
const float blue_factor = 0.11;
bool activeDesktopIsGrayscale();
};
#endif /* !SEEN_DISPLAY_GRAYSCALE_H */
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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