/usr/include/gwyddion/libgwydgets/gwyshader.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: gwyshader.h 15598 2013-11-11 12:33:32Z yeti-dn $
* Copyright (C) 2003 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_SHADER_H__
#define __GWY_SHADER_H__
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gtk/gtkenums.h>
#include <gtk/gtkwidget.h>
#include <libdraw/gwygradient.h>
G_BEGIN_DECLS
#define GWY_TYPE_SHADER (gwy_shader_get_type())
#define GWY_SHADER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GWY_TYPE_SHADER, GwyShader))
#define GWY_SHADER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GWY_TYPE_SHADER, GwyShaderClass))
#define GWY_IS_SHADER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GWY_TYPE_SHADER))
#define GWY_IS_SHADER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GWY_TYPE_SHADER))
#define GWY_SHADER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GWY_TYPE_SHADER, GwyShaderClass))
typedef struct _GwyShader GwyShader;
typedef struct _GwyShaderClass GwyShaderClass;
struct _GwyShader {
GtkWidget widget;
GdkWindow *event_window;
GwyGradient *gradient;
GtkUpdateType update_policy;
guint8 button;
gint radius;
guint32 timer_id;
gulong gradient_change_id;
/* Current angles */
gdouble theta;
gdouble phi;
/* Old adjustment values */
gdouble old_theta;
gdouble old_phi;
/* The sphere */
GdkPixbuf *pixbuf;
gpointer reserved1;
};
struct _GwyShaderClass {
GtkWidgetClass parent_class;
void (*angle_changed)(GwyShader *shader);
void (*reserved1)(void);
};
GType gwy_shader_get_type (void) G_GNUC_CONST;
GtkWidget* gwy_shader_new (const gchar *gradient);
gdouble gwy_shader_get_theta (GwyShader *shader);
gdouble gwy_shader_get_phi (GwyShader *shader);
void gwy_shader_set_theta (GwyShader *shader,
gdouble theta);
void gwy_shader_set_phi (GwyShader *shader,
gdouble phi);
void gwy_shader_set_angle (GwyShader *shader,
gdouble theta,
gdouble phi);
const gchar* gwy_shader_get_gradient (GwyShader *shader);
void gwy_shader_set_gradient (GwyShader *shader,
const gchar *gradient);
GtkUpdateType gwy_shader_get_update_policy(GwyShader *shader);
void gwy_shader_set_update_policy(GwyShader *shader,
GtkUpdateType update_policy);
G_END_DECLS
#endif /* __GWY_SHADER_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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