c83f0e88af
The GimpLayer implementation of the GimpItem transform functions, and the GimpDrawable convert_type() function, apply their operation to both the layer and its mask. The subclasses of GimpLayer -- GimpGroupLayer and GimpTextLayer -- override some of these functions, providing their own logic for the layer part, and duplicating the mask part. Avoid this duplication by adding a set of virtual transform and type-conversion functions to GimpLayer. Have the GimpLayer implementaion of the corresponding GimpItem and GimpDrawable functions use these functions to apply the operation to the layer, while taking care of the mask themselves. Have GimpLayer's subclasses override the new virtual functions, instead of the GimpItem and GimpDrawable ones. Note that the existing implementation of convert_type() in GimpTextLayer neglected to convert the mask, hence text layer masks retained their old format after conversion. This issue is fixed as a side effect of this commit.
218 lines
12 KiB
C
218 lines
12 KiB
C
/* GIMP - The GNU Image Manipulation Program
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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 <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_LAYER_H__
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#define __GIMP_LAYER_H__
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#include "gimpdrawable.h"
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#define GIMP_TYPE_LAYER (gimp_layer_get_type ())
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#define GIMP_LAYER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_LAYER, GimpLayer))
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#define GIMP_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_LAYER, GimpLayerClass))
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#define GIMP_IS_LAYER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_LAYER))
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#define GIMP_IS_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_LAYER))
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#define GIMP_LAYER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_LAYER, GimpLayerClass))
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typedef struct _GimpLayerClass GimpLayerClass;
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struct _GimpLayer
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{
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GimpDrawable parent_instance;
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gdouble opacity; /* layer opacity */
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GimpLayerMode mode; /* layer combination mode */
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GimpLayerColorSpace blend_space; /* layer blend space */
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GimpLayerColorSpace composite_space; /* layer composite space */
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GimpLayerCompositeMode composite_mode; /* layer 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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GimpLayerMask *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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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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GimpDrawable *drawable; /* floating sel is attached to */
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gboolean boundary_known; /* is the current boundary valid */
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GimpBoundSeg *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 _GimpLayerClass
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{
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GimpDrawableClass parent_class;
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/* signals */
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void (* opacity_changed) (GimpLayer *layer);
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void (* mode_changed) (GimpLayer *layer);
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void (* blend_space_changed) (GimpLayer *layer);
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void (* composite_space_changed) (GimpLayer *layer);
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void (* composite_mode_changed) (GimpLayer *layer);
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void (* excludes_backdrop_changed) (GimpLayer *layer);
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void (* lock_alpha_changed) (GimpLayer *layer);
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void (* mask_changed) (GimpLayer *layer);
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void (* apply_mask_changed) (GimpLayer *layer);
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void (* edit_mask_changed) (GimpLayer *layer);
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void (* show_mask_changed) (GimpLayer *layer);
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/* virtual functions */
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void (* translate) (GimpLayer *layer,
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gint offset_x,
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gint offset_y);
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void (* scale) (GimpLayer *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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GimpInterpolationType interpolation_type,
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GimpProgress *progress);
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void (* resize) (GimpLayer *layer,
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GimpContext *context,
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GimpFillType 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) (GimpLayer *layer,
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GimpContext *context,
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GimpOrientationType flip_type,
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gdouble axis,
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gboolean clip_result);
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void (* rotate) (GimpLayer *layer,
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GimpContext *context,
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GimpRotationType 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) (GimpLayer *layer,
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GimpContext *context,
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const GimpMatrix3 *matrix,
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GimpTransformDirection direction,
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GimpInterpolationType interpolation_type,
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GimpTransformResize clip_result,
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GimpProgress *progress);
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void (* convert_type) (GimpLayer *layer,
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GimpImage *dest_image,
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const Babl *new_format,
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GimpColorProfile *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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GimpProgress *progress);
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gboolean (* get_excludes_backdrop) (GimpLayer *layer);
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};
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/* function declarations */
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GType gimp_layer_get_type (void) G_GNUC_CONST;
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GimpLayer * gimp_layer_get_parent (GimpLayer *layer);
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GimpLayerMask * gimp_layer_get_mask (GimpLayer *layer);
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GimpLayerMask * gimp_layer_create_mask (GimpLayer *layer,
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GimpAddMaskType mask_type,
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GimpChannel *channel);
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GimpLayerMask * gimp_layer_add_mask (GimpLayer *layer,
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GimpLayerMask *mask,
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gboolean push_undo,
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GError **error);
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void gimp_layer_apply_mask (GimpLayer *layer,
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GimpMaskApplyMode mode,
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gboolean push_undo);
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void gimp_layer_set_apply_mask (GimpLayer *layer,
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gboolean apply,
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gboolean push_undo);
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gboolean gimp_layer_get_apply_mask (GimpLayer *layer);
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void gimp_layer_set_edit_mask (GimpLayer *layer,
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gboolean edit);
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gboolean gimp_layer_get_edit_mask (GimpLayer *layer);
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void gimp_layer_set_show_mask (GimpLayer *layer,
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gboolean show,
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gboolean push_undo);
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gboolean gimp_layer_get_show_mask (GimpLayer *layer);
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void gimp_layer_add_alpha (GimpLayer *layer);
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void gimp_layer_remove_alpha (GimpLayer *layer,
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GimpContext *context);
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void gimp_layer_resize_to_image (GimpLayer *layer,
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GimpContext *context,
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GimpFillType fill_type);
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GimpDrawable * gimp_layer_get_floating_sel_drawable (GimpLayer *layer);
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void gimp_layer_set_floating_sel_drawable (GimpLayer *layer,
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GimpDrawable *drawable);
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gboolean gimp_layer_is_floating_sel (GimpLayer *layer);
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void gimp_layer_set_opacity (GimpLayer *layer,
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gdouble opacity,
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gboolean push_undo);
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gdouble gimp_layer_get_opacity (GimpLayer *layer);
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void gimp_layer_set_mode (GimpLayer *layer,
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GimpLayerMode mode,
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gboolean push_undo);
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GimpLayerMode gimp_layer_get_mode (GimpLayer *layer);
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void gimp_layer_set_blend_space (GimpLayer *layer,
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GimpLayerColorSpace blend_space,
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gboolean push_undo);
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GimpLayerColorSpace
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gimp_layer_get_blend_space (GimpLayer *layer);
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void gimp_layer_set_composite_space (GimpLayer *layer,
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GimpLayerColorSpace composite_space,
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gboolean push_undo);
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GimpLayerColorSpace
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gimp_layer_get_composite_space (GimpLayer *layer);
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void gimp_layer_set_composite_mode (GimpLayer *layer,
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GimpLayerCompositeMode composite_mode,
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gboolean push_undo);
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GimpLayerCompositeMode
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gimp_layer_get_composite_mode (GimpLayer *layer);
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gboolean gimp_layer_get_excludes_backdrop (GimpLayer *layer);
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void gimp_layer_set_lock_alpha (GimpLayer *layer,
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gboolean lock_alpha,
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gboolean push_undo);
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gboolean gimp_layer_get_lock_alpha (GimpLayer *layer);
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gboolean gimp_layer_can_lock_alpha (GimpLayer *layer);
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/* protected */
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void gimp_layer_update_excludes_backdrop (GimpLayer *layer);
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#endif /* __GIMP_LAYER_H__ */
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