PIKApp/app/paint/pikapaintcore.h

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/* 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_PAINT_CORE_H__
#define __PIKA_PAINT_CORE_H__
#include "core/pikaobject.h"
#define PIKA_TYPE_PAINT_CORE (pika_paint_core_get_type ())
#define PIKA_PAINT_CORE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_PAINT_CORE, PikaPaintCore))
#define PIKA_PAINT_CORE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_PAINT_CORE, PikaPaintCoreClass))
#define PIKA_IS_PAINT_CORE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_PAINT_CORE))
#define PIKA_IS_PAINT_CORE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_PAINT_CORE))
#define PIKA_PAINT_CORE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_PAINT_CORE, PikaPaintCoreClass))
typedef struct _PikaPaintCoreClass PikaPaintCoreClass;
struct _PikaPaintCore
{
PikaObject parent_instance;
gint ID; /* unique instance ID */
gchar *undo_desc; /* undo description */
gboolean show_all; /* whether working in show-all mode */
PikaCoords start_coords; /* the last stroke's endpoint for undo */
PikaCoords cur_coords; /* current coords */
PikaCoords last_coords; /* last coords */
PikaVector2 last_paint; /* last point that was painted */
gdouble distance; /* distance traveled by brush */
gdouble pixel_dist; /* distance in pixels */
gint x1, y1; /* undo extents in image coords */
gint x2, y2; /* undo extents in image coords */
gboolean use_saved_proj; /* keep the unmodified proj around */
PikaPickable *image_pickable; /* the image pickable */
GHashTable *undo_buffers; /* pixels which have been modified */
GeglBuffer *saved_proj_buffer; /* proj tiles which have been modified */
GeglBuffer *canvas_buffer; /* the buffer to paint the mask to */
GeglBuffer *paint_buffer; /* the buffer to paint pixels to */
gint paint_buffer_x;
gint paint_buffer_y;
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GHashTable *original_bounds; /* the original bounds of drawables */
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GeglBuffer *mask_buffer; /* the target drawable's mask */
GHashTable *applicators;
GArray *stroke_buffer;
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PikaSymmetry *sym;
PikaPaintLockBlinkState
lock_blink_state;
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};
struct _PikaPaintCoreClass
{
PikaObjectClass parent_class;
/* virtual functions */
gboolean (* start) (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
const PikaCoords *coords,
GError **error);
gboolean (* pre_paint) (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
PikaPaintState paint_state,
guint32 time);
void (* paint) (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
PikaSymmetry *sym,
PikaPaintState paint_state,
guint32 time);
void (* post_paint) (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
PikaPaintState paint_state,
guint32 time);
void (* interpolate) (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
guint32 time);
GeglBuffer * (* get_paint_buffer) (PikaPaintCore *core,
PikaDrawable *drawable,
PikaPaintOptions *paint_options,
PikaLayerMode paint_mode,
const PikaCoords *coords,
gint *paint_buffer_x,
gint *paint_buffer_y,
gint *paint_width,
gint *paint_height);
PikaUndo * (* push_undo) (PikaPaintCore *core,
PikaImage *image,
const gchar *undo_desc);
};
GType pika_paint_core_get_type (void) G_GNUC_CONST;
void pika_paint_core_paint (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
PikaPaintState state,
guint32 time);
gboolean pika_paint_core_start (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
const PikaCoords *coords,
GError **error);
void pika_paint_core_finish (PikaPaintCore *core,
GList *drawables,
gboolean push_undo);
void pika_paint_core_cancel (PikaPaintCore *core,
GList *drawables);
void pika_paint_core_cleanup (PikaPaintCore *core);
void pika_paint_core_interpolate (PikaPaintCore *core,
GList *drawables,
PikaPaintOptions *paint_options,
const PikaCoords *coords,
guint32 time);
void pika_paint_core_set_show_all (PikaPaintCore *core,
gboolean show_all);
gboolean pika_paint_core_get_show_all (PikaPaintCore *core);
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gboolean pika_paint_core_expand_drawable (PikaPaintCore *paint_core,
PikaDrawable *drawable,
PikaPaintOptions *paint_options,
gint x1,
gint x2,
gint y1,
gint y2,
gint *x,
gint *y);
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void pika_paint_core_set_current_coords (PikaPaintCore *core,
const PikaCoords *coords);
void pika_paint_core_get_current_coords (PikaPaintCore *core,
PikaCoords *coords);
void pika_paint_core_set_last_coords (PikaPaintCore *core,
const PikaCoords *coords);
void pika_paint_core_get_last_coords (PikaPaintCore *core,
PikaCoords *coords);
void pika_paint_core_round_line (PikaPaintCore *core,
PikaPaintOptions *options,
gboolean constrain_15_degrees,
gdouble constrain_offset_angle,
gdouble constrain_xres,
gdouble constrain_yres);
/* protected functions */
GeglBuffer * pika_paint_core_get_paint_buffer (PikaPaintCore *core,
PikaDrawable *drawable,
PikaPaintOptions *options,
PikaLayerMode paint_mode,
const PikaCoords *coords,
gint *paint_buffer_x,
gint *paint_buffer_y,
gint *paint_width,
gint *paint_height);
PikaPickable * pika_paint_core_get_image_pickable (PikaPaintCore *core);
GeglBuffer * pika_paint_core_get_orig_image (PikaPaintCore *core,
PikaDrawable *drawable);
GeglBuffer * pika_paint_core_get_orig_proj (PikaPaintCore *core);
void pika_paint_core_paste (PikaPaintCore *core,
const PikaTempBuf *paint_mask,
gint paint_mask_offset_x,
gint paint_mask_offset_y,
PikaDrawable *drawable,
gdouble paint_opacity,
gdouble image_opacity,
PikaLayerMode paint_mode,
PikaPaintApplicationMode mode);
void pika_paint_core_replace (PikaPaintCore *core,
const PikaTempBuf *paint_mask,
gint paint_mask_offset_x,
gint paint_mask_offset_y,
PikaDrawable *drawable,
gdouble paint_opacity,
gdouble image_opacity,
PikaPaintApplicationMode mode);
void pika_paint_core_smooth_coords (PikaPaintCore *core,
PikaPaintOptions *paint_options,
PikaCoords *coords);
#endif /* __PIKA_PAINT_CORE_H__ */