220 lines
12 KiB
C
220 lines
12 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 3 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, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __PIKA_PAINT_CORE_H__
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#define __PIKA_PAINT_CORE_H__
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#include "core/pikaobject.h"
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#define PIKA_TYPE_PAINT_CORE (pika_paint_core_get_type ())
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#define PIKA_PAINT_CORE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_PAINT_CORE, PikaPaintCore))
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#define PIKA_PAINT_CORE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_PAINT_CORE, PikaPaintCoreClass))
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#define PIKA_IS_PAINT_CORE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_PAINT_CORE))
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#define PIKA_IS_PAINT_CORE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_PAINT_CORE))
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#define PIKA_PAINT_CORE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_PAINT_CORE, PikaPaintCoreClass))
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typedef struct _PikaPaintCoreClass PikaPaintCoreClass;
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struct _PikaPaintCore
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{
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PikaObject parent_instance;
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gint ID; /* unique instance ID */
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gchar *undo_desc; /* undo description */
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gboolean show_all; /* whether working in show-all mode */
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PikaCoords start_coords; /* the last stroke's endpoint for undo */
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PikaCoords cur_coords; /* current coords */
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PikaCoords last_coords; /* last coords */
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PikaVector2 last_paint; /* last point that was painted */
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gdouble distance; /* distance traveled by brush */
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gdouble pixel_dist; /* distance in pixels */
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gint x1, y1; /* undo extents in image coords */
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gint x2, y2; /* undo extents in image coords */
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gboolean use_saved_proj; /* keep the unmodified proj around */
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PikaPickable *image_pickable; /* the image pickable */
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GHashTable *undo_buffers; /* pixels which have been modified */
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GeglBuffer *saved_proj_buffer; /* proj tiles which have been modified */
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GeglBuffer *canvas_buffer; /* the buffer to paint the mask to */
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GeglBuffer *paint_buffer; /* the buffer to paint pixels to */
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gint paint_buffer_x;
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gint paint_buffer_y;
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GeglBuffer *mask_buffer; /* the target drawable's mask */
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GHashTable *applicators;
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GArray *stroke_buffer;
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};
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struct _PikaPaintCoreClass
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{
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PikaObjectClass parent_class;
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/* virtual functions */
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gboolean (* start) (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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const PikaCoords *coords,
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GError **error);
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gboolean (* pre_paint) (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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PikaPaintState paint_state,
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guint32 time);
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void (* paint) (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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PikaSymmetry *sym,
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PikaPaintState paint_state,
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guint32 time);
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void (* post_paint) (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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PikaPaintState paint_state,
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guint32 time);
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void (* interpolate) (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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guint32 time);
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GeglBuffer * (* get_paint_buffer) (PikaPaintCore *core,
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PikaDrawable *drawable,
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PikaPaintOptions *paint_options,
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PikaLayerMode paint_mode,
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const PikaCoords *coords,
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gint *paint_buffer_x,
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gint *paint_buffer_y,
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gint *paint_width,
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gint *paint_height);
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PikaUndo * (* push_undo) (PikaPaintCore *core,
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PikaImage *image,
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const gchar *undo_desc);
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};
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GType pika_paint_core_get_type (void) G_GNUC_CONST;
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void pika_paint_core_paint (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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PikaPaintState state,
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guint32 time);
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gboolean pika_paint_core_start (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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const PikaCoords *coords,
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GError **error);
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void pika_paint_core_finish (PikaPaintCore *core,
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GList *drawables,
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gboolean push_undo);
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void pika_paint_core_cancel (PikaPaintCore *core,
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GList *drawables);
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void pika_paint_core_cleanup (PikaPaintCore *core);
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void pika_paint_core_interpolate (PikaPaintCore *core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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const PikaCoords *coords,
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guint32 time);
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void pika_paint_core_set_show_all (PikaPaintCore *core,
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gboolean show_all);
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gboolean pika_paint_core_get_show_all (PikaPaintCore *core);
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void pika_paint_core_set_current_coords (PikaPaintCore *core,
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const PikaCoords *coords);
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void pika_paint_core_get_current_coords (PikaPaintCore *core,
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PikaCoords *coords);
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void pika_paint_core_set_last_coords (PikaPaintCore *core,
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const PikaCoords *coords);
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void pika_paint_core_get_last_coords (PikaPaintCore *core,
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PikaCoords *coords);
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void pika_paint_core_round_line (PikaPaintCore *core,
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PikaPaintOptions *options,
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gboolean constrain_15_degrees,
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gdouble constrain_offset_angle,
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gdouble constrain_xres,
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gdouble constrain_yres);
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/* protected functions */
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GeglBuffer * pika_paint_core_get_paint_buffer (PikaPaintCore *core,
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PikaDrawable *drawable,
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PikaPaintOptions *options,
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PikaLayerMode paint_mode,
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const PikaCoords *coords,
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gint *paint_buffer_x,
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gint *paint_buffer_y,
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gint *paint_width,
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gint *paint_height);
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PikaPickable * pika_paint_core_get_image_pickable (PikaPaintCore *core);
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GeglBuffer * pika_paint_core_get_orig_image (PikaPaintCore *core,
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PikaDrawable *drawable);
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GeglBuffer * pika_paint_core_get_orig_proj (PikaPaintCore *core);
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void pika_paint_core_paste (PikaPaintCore *core,
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const PikaTempBuf *paint_mask,
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gint paint_mask_offset_x,
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gint paint_mask_offset_y,
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PikaDrawable *drawable,
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gdouble paint_opacity,
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gdouble image_opacity,
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PikaLayerMode paint_mode,
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PikaPaintApplicationMode mode);
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void pika_paint_core_replace (PikaPaintCore *core,
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const PikaTempBuf *paint_mask,
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gint paint_mask_offset_x,
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gint paint_mask_offset_y,
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PikaDrawable *drawable,
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gdouble paint_opacity,
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gdouble image_opacity,
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PikaPaintApplicationMode mode);
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void pika_paint_core_smooth_coords (PikaPaintCore *core,
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PikaPaintOptions *paint_options,
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PikaCoords *coords);
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#endif /* __PIKA_PAINT_CORE_H__ */
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