mirror of https://github.com/GNOME/gimp.git
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_GRADIENT_H__
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#define __GIMP_GRADIENT_H__
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#include "gimpdata.h"
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#define GIMP_GRADIENT_FILE_EXTENSION ".ggr"
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typedef enum
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{
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GRAD_LINEAR = 0,
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GRAD_CURVED,
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GRAD_SINE,
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GRAD_SPHERE_INCREASING,
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GRAD_SPHERE_DECREASING
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} GimpGradientSegmentType;
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typedef enum
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{
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GRAD_RGB = 0, /* normal RGB */
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GRAD_HSV_CCW, /* counterclockwise hue */
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GRAD_HSV_CW /* clockwise hue */
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} GimpGradientSegmentColor;
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typedef struct _GimpGradientSegment GimpGradientSegment;
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struct _GimpGradientSegment
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{
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gdouble left, middle, right;
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GimpRGB left_color;
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GimpRGB right_color;
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GimpGradientSegmentType type; /* Segment's blending function */
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GimpGradientSegmentColor color; /* Segment's coloring type */
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GimpGradientSegment *prev;
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GimpGradientSegment *next;
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};
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#define GIMP_TYPE_GRADIENT (gimp_gradient_get_type ())
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#define GIMP_GRADIENT(obj) (GTK_CHECK_CAST ((obj), GIMP_TYPE_GRADIENT, GimpGradient))
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#define GIMP_GRADIENT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_GRADIENT, GimpGradientClass))
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#define GIMP_IS_GRADIENT(obj) (GTK_CHECK_TYPE ((obj), GIMP_TYPE_GRADIENT))
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#define GIMP_IS_GRADIENT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_GRADIENT))
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typedef struct _GimpGradientClass GimpGradientClass;
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struct _GimpGradient
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{
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GimpData parent_instance;
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GimpGradientSegment *segments;
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/*< private >*/
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GimpGradientSegment *last_visited;
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};
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struct _GimpGradientClass
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{
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GimpDataClass parent_class;
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};
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GtkType gimp_gradient_get_type (void);
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GimpData * gimp_gradient_new (const gchar *name);
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GimpData * gimp_gradient_get_standard (void);
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GimpData * gimp_gradient_load (const gchar *filename);
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void gimp_gradient_get_color_at (GimpGradient *gradient,
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gdouble pos,
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GimpRGB *color);
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GimpGradientSegment * gimp_gradient_get_segment_at (GimpGradient *grad,
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gdouble pos);
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/* gradient segment functions */
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GimpGradientSegment * gimp_gradient_segment_new (void);
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GimpGradientSegment * gimp_gradient_segment_get_last (GimpGradientSegment *seg);
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void gimp_gradient_segment_free (GimpGradientSegment *seg);
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void gimp_gradient_segments_free (GimpGradientSegment *seg);
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#endif /* __GIMP_GRADIENT_H__ */
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