/usr/include/gwyddion/libgwydgets/gwylayer-mask.h is in libgwyddion20-dev 2.50-2.
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: gwylayer-mask.h 20678 2017-12-18 18:26:55Z yeti-dn $
* Copyright (C) 2003,2004 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_LAYER_MASK_H__
#define __GWY_LAYER_MASK_H__
#include <libdraw/gwyrgba.h>
#include <libgwydgets/gwypixmaplayer.h>
G_BEGIN_DECLS
#define GWY_TYPE_LAYER_MASK (gwy_layer_mask_get_type())
#define GWY_LAYER_MASK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GWY_TYPE_LAYER_MASK, GwyLayerMask))
#define GWY_LAYER_MASK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GWY_TYPE_LAYER_MASK, GwyLayerMaskClass))
#define GWY_IS_LAYER_MASK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GWY_TYPE_LAYER_MASK))
#define GWY_IS_LAYER_MASK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GWY_TYPE_LAYER_MASK))
#define GWY_LAYER_MASK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GWY_TYPE_LAYER_MASK, GwyLayerMaskClass))
typedef struct _GwyLayerMask GwyLayerMask;
typedef struct _GwyLayerMaskClass GwyLayerMaskClass;
struct _GwyLayerMask {
GwyPixmapLayer parent_instance;
GQuark color_key;
gulong red_id;
gulong green_id;
gulong blue_id;
gulong alpha_id;
gulong handler_id;
gpointer reserved1;
gpointer reserved2;
};
struct _GwyLayerMaskClass {
GwyPixmapLayerClass parent_class;
void (*reserved1)(void);
void (*reserved2)(void);
};
GType gwy_layer_mask_get_type (void) G_GNUC_CONST;
GwyPixmapLayer* gwy_layer_mask_new (void);
void gwy_layer_mask_set_color_key (GwyLayerMask *mask_layer,
const gchar *prefix);
const gchar* gwy_layer_mask_get_color_key (GwyLayerMask *mask_layer);
GwyRGBA gwy_layer_mask_get_color (GwyLayerMask *mask_layer);
G_END_DECLS
#endif /* __GWY_LAYER_MASK_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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