/usr/include/gwyddion/libdraw/gwyrgba.h is in libgwyddion20-dev 2.47-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* @(#) $Id: gwyrgba.h 19135 2016-10-30 14:53:30Z yeti-dn $
* Copyright (C) 2004-2016 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* 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.
*/
#ifndef __GWY_RGBA_H__
#define __GWY_RGBA_H__
#include <gdk/gdkgc.h>
#include <libgwyddion/gwycontainer.h>
G_BEGIN_DECLS
#define GWY_TYPE_RGBA (gwy_rgba_get_type())
typedef struct {
gdouble r;
gdouble g;
gdouble b;
gdouble a;
} GwyRGBA;
GType gwy_rgba_get_type (void) G_GNUC_CONST;
GwyRGBA* gwy_rgba_new (gdouble r,
gdouble g,
gdouble b,
gdouble a) G_GNUC_MALLOC;
GwyRGBA* gwy_rgba_copy (const GwyRGBA *rgba) G_GNUC_MALLOC;
void gwy_rgba_free (GwyRGBA *rgba);
void gwy_rgba_to_gdk_color (const GwyRGBA *rgba,
GdkColor *gdkcolor);
guint16 gwy_rgba_to_gdk_alpha (const GwyRGBA *rgba);
void gwy_rgba_from_gdk_color (GwyRGBA *rgba,
const GdkColor *gdkcolor);
void gwy_rgba_from_gdk_color_and_alpha(GwyRGBA *rgba,
const GdkColor *gdkcolor,
guint16 gdkalpha);
void gwy_rgba_interpolate (const GwyRGBA *src1,
const GwyRGBA *src2,
gdouble x,
GwyRGBA *rgba);
gboolean gwy_rgba_get_from_container (GwyRGBA *rgba,
GwyContainer *container,
const gchar *prefix);
void gwy_rgba_store_to_container (const GwyRGBA *rgba,
GwyContainer *container,
const gchar *prefix);
gboolean gwy_rgba_remove_from_container (GwyContainer *container,
const gchar *prefix);
void gwy_rgba_set_gdk_gc_fg (const GwyRGBA *rgba,
GdkGC *gc);
void gwy_rgba_set_gdk_gc_bg (const GwyRGBA *rgba,
GdkGC *gc);
void gwy_rgba_to_hex6 (const GwyRGBA *rgba,
gchar *hexout);
void gwy_rgba_to_hex8 (const GwyRGBA *rgba,
gchar *hexout);
G_END_DECLS
#endif /* __GWY_RGBA_H__ */
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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