258 lines
15 KiB
C
258 lines
15 KiB
C
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/* 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_LAYER_H__
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#define __PIKA_LAYER_H__
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#include "pikadrawable.h"
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#define PIKA_TYPE_LAYER (pika_layer_get_type ())
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#define PIKA_LAYER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_LAYER, PikaLayer))
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#define PIKA_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_LAYER, PikaLayerClass))
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#define PIKA_IS_LAYER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_LAYER))
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#define PIKA_IS_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_LAYER))
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#define PIKA_LAYER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_LAYER, PikaLayerClass))
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typedef struct _PikaLayerClass PikaLayerClass;
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struct _PikaLayer
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{
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PikaDrawable parent_instance;
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gdouble opacity; /* layer opacity */
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PikaLayerMode mode; /* layer combination mode */
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PikaLayerColorSpace blend_space; /* layer blend space */
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PikaLayerColorSpace composite_space; /* layer composite space */
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PikaLayerCompositeMode composite_mode; /* layer composite mode */
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PikaLayerMode effective_mode; /* layer effective combination mode */
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PikaLayerColorSpace effective_blend_space; /* layer effective blend space */
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PikaLayerColorSpace effective_composite_space; /* layer effective composite space */
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PikaLayerCompositeMode effective_composite_mode; /* layer effective composite mode */
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gboolean excludes_backdrop; /* layer clips backdrop */
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gboolean lock_alpha; /* lock the alpha channel */
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PikaLayerMask *mask; /* possible layer mask */
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gboolean apply_mask; /* controls mask application */
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gboolean edit_mask; /* edit mask or layer? */
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gboolean show_mask; /* show mask or layer? */
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GSList *move_stack; /* ancestors affected by move */
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GeglNode *layer_offset_node;
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GeglNode *mask_offset_node;
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/* Floating selections */
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struct
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{
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PikaDrawable *drawable; /* floating sel is attached to */
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gboolean boundary_known; /* is the current boundary valid */
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PikaBoundSeg *segs; /* boundary of floating sel */
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gint num_segs; /* number of segs in boundary */
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} fs;
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};
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struct _PikaLayerClass
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{
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PikaDrawableClass parent_class;
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/* signals */
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void (* opacity_changed) (PikaLayer *layer);
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void (* mode_changed) (PikaLayer *layer);
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void (* blend_space_changed) (PikaLayer *layer);
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void (* composite_space_changed) (PikaLayer *layer);
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void (* composite_mode_changed) (PikaLayer *layer);
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void (* effective_mode_changed) (PikaLayer *layer);
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void (* excludes_backdrop_changed) (PikaLayer *layer);
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void (* lock_alpha_changed) (PikaLayer *layer);
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void (* mask_changed) (PikaLayer *layer);
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void (* apply_mask_changed) (PikaLayer *layer);
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void (* edit_mask_changed) (PikaLayer *layer);
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void (* show_mask_changed) (PikaLayer *layer);
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/* virtual functions */
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gboolean (* is_alpha_locked) (PikaLayer *layer,
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PikaLayer **locked_layer);
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void (* translate) (PikaLayer *layer,
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gint offset_x,
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gint offset_y);
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void (* scale) (PikaLayer *layer,
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gint new_width,
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gint new_height,
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gint new_offset_x,
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gint new_offset_y,
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PikaInterpolationType interpolation_type,
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PikaProgress *progress);
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void (* resize) (PikaLayer *layer,
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PikaContext *context,
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PikaFillType fill_type,
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gint new_width,
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gint new_height,
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gint offset_x,
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gint offset_y);
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void (* flip) (PikaLayer *layer,
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PikaContext *context,
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PikaOrientationType flip_type,
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gdouble axis,
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gboolean clip_result);
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void (* rotate) (PikaLayer *layer,
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PikaContext *context,
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PikaRotationType rotate_type,
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gdouble center_x,
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gdouble center_y,
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gboolean clip_result);
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void (* transform) (PikaLayer *layer,
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PikaContext *context,
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const PikaMatrix3 *matrix,
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PikaTransformDirection direction,
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PikaInterpolationType interpolation_type,
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PikaTransformResize clip_result,
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PikaProgress *progress);
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void (* convert_type) (PikaLayer *layer,
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PikaImage *dest_image,
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const Babl *new_format,
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PikaColorProfile *src_profile,
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PikaColorProfile *dest_profile,
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GeglDitherMethod layer_dither_type,
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GeglDitherMethod mask_dither_type,
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gboolean push_undo,
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PikaProgress *progress);
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GeglRectangle (* get_bounding_box) (PikaLayer *layer);
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void (* get_effective_mode) (PikaLayer *layer,
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PikaLayerMode *mode,
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PikaLayerColorSpace *blend_space,
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PikaLayerColorSpace *composite_space,
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PikaLayerCompositeMode *composite_mode);
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gboolean (* get_excludes_backdrop) (PikaLayer *layer);
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};
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/* function declarations */
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GType pika_layer_get_type (void) G_GNUC_CONST;
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void pika_layer_fix_format_space (PikaLayer *layer,
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gboolean copy_buffer,
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gboolean push_undo);
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PikaLayer * pika_layer_get_parent (PikaLayer *layer);
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PikaLayerMask * pika_layer_get_mask (PikaLayer *layer);
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PikaLayerMask * pika_layer_create_mask (PikaLayer *layer,
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PikaAddMaskType mask_type,
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PikaChannel *channel);
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PikaLayerMask * pika_layer_add_mask (PikaLayer *layer,
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PikaLayerMask *mask,
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gboolean push_undo,
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GError **error);
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void pika_layer_apply_mask (PikaLayer *layer,
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PikaMaskApplyMode mode,
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gboolean push_undo);
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void pika_layer_set_apply_mask (PikaLayer *layer,
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gboolean apply,
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gboolean push_undo);
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gboolean pika_layer_get_apply_mask (PikaLayer *layer);
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void pika_layer_set_edit_mask (PikaLayer *layer,
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gboolean edit);
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gboolean pika_layer_get_edit_mask (PikaLayer *layer);
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void pika_layer_set_show_mask (PikaLayer *layer,
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gboolean show,
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gboolean push_undo);
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gboolean pika_layer_get_show_mask (PikaLayer *layer);
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void pika_layer_add_alpha (PikaLayer *layer);
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void pika_layer_remove_alpha (PikaLayer *layer,
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PikaContext *context);
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void pika_layer_resize_to_image (PikaLayer *layer,
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PikaContext *context,
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PikaFillType fill_type);
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PikaDrawable * pika_layer_get_floating_sel_drawable (PikaLayer *layer);
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void pika_layer_set_floating_sel_drawable (PikaLayer *layer,
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PikaDrawable *drawable);
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gboolean pika_layer_is_floating_sel (PikaLayer *layer);
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void pika_layer_set_opacity (PikaLayer *layer,
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gdouble opacity,
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gboolean push_undo);
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gdouble pika_layer_get_opacity (PikaLayer *layer);
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void pika_layer_set_mode (PikaLayer *layer,
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PikaLayerMode mode,
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gboolean push_undo);
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PikaLayerMode pika_layer_get_mode (PikaLayer *layer);
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void pika_layer_set_blend_space (PikaLayer *layer,
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PikaLayerColorSpace blend_space,
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gboolean push_undo);
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PikaLayerColorSpace
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pika_layer_get_blend_space (PikaLayer *layer);
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PikaLayerColorSpace
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pika_layer_get_real_blend_space (PikaLayer *layer);
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void pika_layer_set_composite_space (PikaLayer *layer,
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PikaLayerColorSpace composite_space,
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gboolean push_undo);
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PikaLayerColorSpace
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pika_layer_get_composite_space (PikaLayer *layer);
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PikaLayerColorSpace
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pika_layer_get_real_composite_space (PikaLayer *layer);
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void pika_layer_set_composite_mode (PikaLayer *layer,
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PikaLayerCompositeMode composite_mode,
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gboolean push_undo);
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PikaLayerCompositeMode
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pika_layer_get_composite_mode (PikaLayer *layer);
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PikaLayerCompositeMode
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pika_layer_get_real_composite_mode (PikaLayer *layer);
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void pika_layer_get_effective_mode (PikaLayer *layer,
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PikaLayerMode *mode,
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PikaLayerColorSpace *blend_space,
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PikaLayerColorSpace *composite_space,
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PikaLayerCompositeMode *composite_mode);
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gboolean pika_layer_get_excludes_backdrop (PikaLayer *layer);
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void pika_layer_set_lock_alpha (PikaLayer *layer,
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gboolean lock_alpha,
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gboolean push_undo);
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gboolean pika_layer_get_lock_alpha (PikaLayer *layer);
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gboolean pika_layer_can_lock_alpha (PikaLayer *layer);
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gboolean pika_layer_is_alpha_locked (PikaLayer *layer,
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PikaLayer **locked_layer);
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/* protected */
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void pika_layer_update_effective_mode (PikaLayer *layer);
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void pika_layer_update_excludes_backdrop (PikaLayer *layer);
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#endif /* __PIKA_LAYER_H__ */
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