301 lines
16 KiB
C
301 lines
16 KiB
C
/* PIKA - Photo and Image Kooker Application
|
|
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
|
|
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
|
|
*
|
|
* Original copyright, applying to most contents (license remains unchanged):
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* 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 3 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, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __PIKA_GRADIENT_H__
|
|
#define __PIKA_GRADIENT_H__
|
|
|
|
|
|
#include "pikadata.h"
|
|
|
|
|
|
#define PIKA_GRADIENT_DEFAULT_SAMPLE_SIZE 40
|
|
|
|
|
|
struct _PikaGradientSegment
|
|
{
|
|
gdouble left, middle, right;
|
|
|
|
PikaGradientColor left_color_type;
|
|
PikaRGB left_color;
|
|
PikaGradientColor right_color_type;
|
|
PikaRGB right_color;
|
|
|
|
PikaGradientSegmentType type; /* Segment's blending function */
|
|
PikaGradientSegmentColor color; /* Segment's coloring type */
|
|
|
|
PikaGradientSegment *prev;
|
|
PikaGradientSegment *next;
|
|
};
|
|
|
|
|
|
#define PIKA_TYPE_GRADIENT (pika_gradient_get_type ())
|
|
#define PIKA_GRADIENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_GRADIENT, PikaGradient))
|
|
#define PIKA_GRADIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_GRADIENT, PikaGradientClass))
|
|
#define PIKA_IS_GRADIENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_GRADIENT))
|
|
#define PIKA_IS_GRADIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_GRADIENT))
|
|
#define PIKA_GRADIENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_GRADIENT, PikaGradientClass))
|
|
|
|
|
|
typedef struct _PikaGradientClass PikaGradientClass;
|
|
|
|
struct _PikaGradient
|
|
{
|
|
PikaData parent_instance;
|
|
|
|
PikaGradientSegment *segments;
|
|
};
|
|
|
|
struct _PikaGradientClass
|
|
{
|
|
PikaDataClass parent_class;
|
|
};
|
|
|
|
|
|
GType pika_gradient_get_type (void) G_GNUC_CONST;
|
|
|
|
PikaData * pika_gradient_new (PikaContext *context,
|
|
const gchar *name);
|
|
PikaData * pika_gradient_get_standard (PikaContext *context);
|
|
|
|
PikaGradientSegment * pika_gradient_get_color_at (PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *seg,
|
|
gdouble pos,
|
|
gboolean reverse,
|
|
PikaGradientBlendColorSpace blend_color_space,
|
|
PikaRGB *color);
|
|
PikaGradientSegment * pika_gradient_get_segment_at (PikaGradient *grad,
|
|
gdouble pos);
|
|
void pika_gradient_split_at (PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *seg,
|
|
gdouble pos,
|
|
PikaGradientBlendColorSpace blend_color_space,
|
|
PikaGradientSegment **newl,
|
|
PikaGradientSegment **newr);
|
|
|
|
gboolean pika_gradient_has_fg_bg_segments (PikaGradient *gradient);
|
|
PikaGradient * pika_gradient_flatten (PikaGradient *gradient,
|
|
PikaContext *context);
|
|
|
|
|
|
/* gradient segment functions */
|
|
|
|
PikaGradientSegment * pika_gradient_segment_new (void);
|
|
PikaGradientSegment * pika_gradient_segment_get_last (PikaGradientSegment *seg);
|
|
PikaGradientSegment * pika_gradient_segment_get_first (PikaGradientSegment *seg);
|
|
PikaGradientSegment * pika_gradient_segment_get_nth (PikaGradientSegment *seg,
|
|
gint index);
|
|
|
|
void pika_gradient_segment_free (PikaGradientSegment *seg);
|
|
void pika_gradient_segments_free (PikaGradientSegment *seg);
|
|
|
|
void pika_gradient_segment_split_midpoint (PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *lseg,
|
|
PikaGradientBlendColorSpace blend_color_space,
|
|
PikaGradientSegment **newl,
|
|
PikaGradientSegment **newr);
|
|
void pika_gradient_segment_split_uniform (PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *lseg,
|
|
gint parts,
|
|
PikaGradientBlendColorSpace blend_color_space,
|
|
PikaGradientSegment **newl,
|
|
PikaGradientSegment **newr);
|
|
|
|
/* Colors Setting/Getting Routines */
|
|
void pika_gradient_segment_get_left_color (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
PikaRGB *color);
|
|
|
|
void pika_gradient_segment_set_left_color (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
const PikaRGB *color);
|
|
|
|
|
|
void pika_gradient_segment_get_right_color (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
PikaRGB *color);
|
|
|
|
void pika_gradient_segment_set_right_color (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
const PikaRGB *color);
|
|
|
|
|
|
PikaGradientColor
|
|
pika_gradient_segment_get_left_color_type (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
|
|
void
|
|
pika_gradient_segment_set_left_color_type (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
PikaGradientColor color_type);
|
|
|
|
|
|
PikaGradientColor
|
|
pika_gradient_segment_get_right_color_type (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
|
|
void
|
|
pika_gradient_segment_set_right_color_type (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
PikaGradientColor color_type);
|
|
|
|
|
|
void
|
|
pika_gradient_segment_get_left_flat_color (PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *seg,
|
|
PikaRGB *color);
|
|
|
|
|
|
void
|
|
pika_gradient_segment_get_right_flat_color (PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *seg,
|
|
PikaRGB *color);
|
|
|
|
|
|
/* Position Setting/Getting Routines */
|
|
/* (Setters return the position after it was set) */
|
|
gdouble pika_gradient_segment_get_left_pos (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
gdouble pika_gradient_segment_set_left_pos (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
gdouble pos);
|
|
|
|
gdouble pika_gradient_segment_get_right_pos (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
gdouble pika_gradient_segment_set_right_pos (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
gdouble pos);
|
|
|
|
gdouble pika_gradient_segment_get_middle_pos (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
gdouble pika_gradient_segment_set_middle_pos (PikaGradient *gradient,
|
|
PikaGradientSegment *seg,
|
|
gdouble pos);
|
|
|
|
/* Getting/Setting the Blending Function/Coloring Type */
|
|
PikaGradientSegmentType
|
|
pika_gradient_segment_get_blending_function (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
PikaGradientSegmentColor
|
|
pika_gradient_segment_get_coloring_type (PikaGradient *gradient,
|
|
PikaGradientSegment *seg);
|
|
|
|
/*
|
|
* If the second segment is NULL, these functions will process
|
|
* until the end of the string.
|
|
* */
|
|
gint pika_gradient_segment_range_get_n_segments
|
|
(PikaGradient *gradient,
|
|
PikaGradientSegment *range_l,
|
|
PikaGradientSegment *range_r);
|
|
|
|
void pika_gradient_segment_range_compress (PikaGradient *gradient,
|
|
PikaGradientSegment *range_l,
|
|
PikaGradientSegment *range_r,
|
|
gdouble new_l,
|
|
gdouble new_r);
|
|
void pika_gradient_segment_range_blend (PikaGradient *gradient,
|
|
PikaGradientSegment *lseg,
|
|
PikaGradientSegment *rseg,
|
|
const PikaRGB *rgb1,
|
|
const PikaRGB *rgb2,
|
|
gboolean blend_colors,
|
|
gboolean blend_opacity);
|
|
|
|
void pika_gradient_segment_range_set_blending_function
|
|
(PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
PikaGradientSegmentType new_type);
|
|
|
|
void pika_gradient_segment_range_set_coloring_type
|
|
(PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
PikaGradientSegmentColor new_color);
|
|
|
|
void pika_gradient_segment_range_flip (PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
PikaGradientSegment **final_start_seg,
|
|
PikaGradientSegment **final_end_seg);
|
|
|
|
void pika_gradient_segment_range_replicate (PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
gint replicate_times,
|
|
PikaGradientSegment **final_start_seg,
|
|
PikaGradientSegment **final_end_seg);
|
|
|
|
void pika_gradient_segment_range_split_midpoint
|
|
(PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
PikaGradientBlendColorSpace blend_color_space,
|
|
PikaGradientSegment **final_start_seg,
|
|
PikaGradientSegment **final_end_seg);
|
|
|
|
void pika_gradient_segment_range_split_uniform
|
|
(PikaGradient *gradient,
|
|
PikaContext *context,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
gint parts,
|
|
PikaGradientBlendColorSpace blend_color_space,
|
|
PikaGradientSegment **final_start_seg,
|
|
PikaGradientSegment **final_end_seg);
|
|
|
|
void pika_gradient_segment_range_delete (PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
PikaGradientSegment **final_start_seg,
|
|
PikaGradientSegment **final_end_seg);
|
|
|
|
void pika_gradient_segment_range_merge (PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg,
|
|
PikaGradientSegment **final_start_seg,
|
|
PikaGradientSegment **final_end_seg);
|
|
|
|
void pika_gradient_segment_range_recenter_handles
|
|
(PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg);
|
|
void pika_gradient_segment_range_redistribute_handles
|
|
(PikaGradient *gradient,
|
|
PikaGradientSegment *start_seg,
|
|
PikaGradientSegment *end_seg);
|
|
|
|
gdouble pika_gradient_segment_range_move (PikaGradient *gradient,
|
|
PikaGradientSegment *range_l,
|
|
PikaGradientSegment *range_r,
|
|
gdouble delta,
|
|
gboolean control_compress);
|
|
|
|
|
|
#endif /* __PIKA_GRADIENT_H__ */
|
