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