mirror of https://github.com/GNOME/gimp.git
168 lines
7.8 KiB
C
168 lines
7.8 KiB
C
/* The GIMP -- an 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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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gint opacity; /* layer opacity */
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GimpLayerModeEffects mode; /* layer combination mode */
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gboolean preserve_trans; /* preserve transparency */
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gboolean linked; /* control linkage */
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GimpLayerMask *mask; /* possible layer mask */
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/* Floating selections */
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struct
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{
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TileManager *backing_store; /* for obscured regions */
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GimpDrawable *drawable; /* floating sel is attached to */
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gboolean initial; /* is fs composited yet? */
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gboolean boundary_known; /* is the current boundary valid */
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BoundSeg *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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void (* opacity_changed) (GimpLayer *layer);
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void (* mode_changed) (GimpLayer *layer);
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void (* preserve_trans_changed) (GimpLayer *layer);
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void (* linked_changed) (GimpLayer *layer);
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void (* mask_changed) (GimpLayer *layer);
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};
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/* Special undo types */
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struct _LayerUndo
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{
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GimpLayer *layer; /* the actual layer */
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gint prev_position; /* former position in list */
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GimpLayer *prev_layer; /* previous active layer */
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};
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struct _FStoLayerUndo
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{
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GimpLayer *layer; /* the layer */
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GimpDrawable *drawable; /* drawable of floating sel */
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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_new (GimpImage *gimage,
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gint width,
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gint height,
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GimpImageType type,
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const gchar *name,
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gint opacity,
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GimpLayerModeEffects mode);
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GimpLayer * gimp_layer_copy (GimpLayer *layer,
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gboolean add_alpha);
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GimpLayer * gimp_layer_new_from_tiles (GimpImage *gimage,
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GimpImageType layer_type,
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TileManager *tiles,
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gchar *name,
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gint opacity,
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GimpLayerModeEffects mode);
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gboolean gimp_layer_check_scaling (GimpLayer *layer,
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gint new_width,
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gint new_height);
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GimpLayerMask * gimp_layer_create_mask (GimpLayer *layer,
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AddMaskType add_mask_type);
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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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void gimp_layer_apply_mask (GimpLayer *layer,
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MaskApplyMode mode,
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gboolean push_undo);
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void gimp_layer_translate (GimpLayer *layer,
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gint off_x,
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gint off_y);
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void gimp_layer_add_alpha (GimpLayer *layer);
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gboolean gimp_layer_scale_by_factors (GimpLayer *layer,
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gdouble w_factor,
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gdouble h_factor);
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void gimp_layer_scale (GimpLayer *layer,
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gint new_width,
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gint new_height,
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gboolean local_origin);
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void gimp_layer_resize (GimpLayer *layer,
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gint new_width,
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gint new_height,
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gint offx,
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gint offy);
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void gimp_layer_resize_to_image (GimpLayer *layer);
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BoundSeg * gimp_layer_boundary (GimpLayer *layer,
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gint *num_segs);
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void gimp_layer_invalidate_boundary (GimpLayer *layer);
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gint gimp_layer_pick_correlate (GimpLayer *layer,
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gint x,
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gint y);
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GimpLayerMask * gimp_layer_get_mask (GimpLayer *layer);
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gboolean gimp_layer_has_alpha (GimpLayer *layer);
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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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gdouble gimp_layer_get_opacity (GimpLayer *layer);
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void gimp_layer_set_mode (GimpLayer *layer,
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GimpLayerModeEffects mode);
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GimpLayerModeEffects gimp_layer_get_mode (GimpLayer *layer);
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void gimp_layer_set_preserve_trans (GimpLayer *layer,
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gboolean preserve);
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gboolean gimp_layer_get_preserve_trans (GimpLayer *layer);
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void gimp_layer_set_linked (GimpLayer *layer,
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gboolean linked);
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gboolean gimp_layer_get_linked (GimpLayer *layer);
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#endif /* __GIMP_LAYER_H__ */
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