mirror of https://github.com/GNOME/gimp.git
205 lines
7.6 KiB
C
205 lines
7.6 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_CHANNEL_H__
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#define __GIMP_CHANNEL_H__
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#include "gimpdrawable.h"
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/* Half way point where a region is no longer visible in a selection */
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#define HALF_WAY 127
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#define GIMP_TYPE_CHANNEL (gimp_channel_get_type ())
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#define GIMP_CHANNEL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CHANNEL, GimpChannel))
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#define GIMP_CHANNEL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CHANNEL, GimpChannelClass))
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#define GIMP_IS_CHANNEL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CHANNEL))
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#define GIMP_IS_CHANNEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CHANNEL))
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typedef struct _GimpChannelClass GimpChannelClass;
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struct _GimpChannel
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{
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GimpDrawable parent_instance;
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GimpRGB color; /* Also stored the opacity */
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gboolean show_masked; /* Show masked areas--as */
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/* opposed to selected areas */
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/* Selection mask variables */
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gboolean boundary_known; /* is the current boundary valid */
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BoundSeg *segs_in; /* outline of selected region */
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BoundSeg *segs_out; /* outline of selected region */
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gint num_segs_in; /* number of lines in boundary */
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gint num_segs_out; /* number of lines in boundary */
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gboolean empty; /* is the region empty? */
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gboolean bounds_known; /* recalculate the bounds? */
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gint x1, y1; /* coordinates for bounding box */
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gint x2, y2; /* lower right hand coordinate */
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};
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struct _GimpChannelClass
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{
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GimpDrawableClass parent_class;
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};
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/* Special undo types */
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typedef struct _ChannelUndo ChannelUndo;
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typedef struct _MaskUndo MaskUndo;
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struct _ChannelUndo
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{
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GimpChannel *channel; /* the actual channel */
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gint prev_position; /* former position in list */
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GimpChannel *prev_channel; /* previous active channel */
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};
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struct _MaskUndo
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{
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TileManager *tiles; /* the actual mask */
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gint x, y; /* offsets */
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};
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/* function declarations */
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GtkType gimp_channel_get_type (void);
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GimpChannel * gimp_channel_new (GimpImage *gimage,
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gint width,
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gint height,
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const gchar *name,
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const GimpRGB *color);
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GimpChannel * gimp_channel_copy (const GimpChannel *channel,
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gboolean dummy);
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gint gimp_channel_get_opacity (const GimpChannel *channel);
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void gimp_channel_set_opacity (GimpChannel *channel,
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gint opacity);
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const GimpRGB * gimp_channel_get_color (const GimpChannel *channel);
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void gimp_channel_set_color (GimpChannel *channel,
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const GimpRGB *color);
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void gimp_channel_scale (GimpChannel *channel,
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gint new_width,
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gint new_height);
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void gimp_channel_resize (GimpChannel *channel,
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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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/* selection mask functions */
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GimpChannel * gimp_channel_new_mask (GimpImage *gimage,
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gint width,
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gint height);
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gboolean gimp_channel_boundary (GimpChannel *mask,
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BoundSeg **segs_in,
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BoundSeg **segs_out,
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gint *num_segs_in,
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gint *num_segs_out,
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gint x1,
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gint y1,
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gint x2,
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gint y2);
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gboolean gimp_channel_bounds (GimpChannel *mask,
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gint *x1,
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gint *y1,
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gint *x2,
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gint *y2);
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gint gimp_channel_value (GimpChannel *mask,
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gint x,
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gint y);
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gboolean gimp_channel_is_empty (GimpChannel *mask);
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void gimp_channel_add_segment (GimpChannel *mask,
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gint x,
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gint y,
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gint width,
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gint value);
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void gimp_channel_sub_segment (GimpChannel *mask,
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gint x,
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gint y,
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gint width,
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gint value);
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void gimp_channel_combine_rect (GimpChannel *mask,
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ChannelOps op,
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gint x,
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gint y,
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gint w,
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gint h);
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void gimp_channel_combine_ellipse (GimpChannel *mask,
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ChannelOps op,
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gint x,
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gint y,
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gint w,
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gint h,
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gboolean antialias);
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void gimp_channel_combine_mask (GimpChannel *mask,
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GimpChannel *add_on,
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ChannelOps op,
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gint off_x,
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gint off_y);
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void gimp_channel_feather (GimpChannel *input,
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GimpChannel *output,
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gdouble radius_x,
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gdouble radius_y,
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ChannelOps op,
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gint off_x,
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gint off_y);
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void gimp_channel_push_undo (GimpChannel *mask);
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void gimp_channel_clear (GimpChannel *mask);
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void gimp_channel_invert (GimpChannel *mask);
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void gimp_channel_sharpen (GimpChannel *mask);
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void gimp_channel_all (GimpChannel *mask);
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void gimp_channel_border (GimpChannel *mask,
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gint radius_x,
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gint radius_y);
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void gimp_channel_grow (GimpChannel *mask,
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gint radius_x,
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gint radius_y);
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void gimp_channel_shrink (GimpChannel *mask,
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gint radius_x,
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gint radius_y,
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gboolean edge_lock);
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void gimp_channel_translate (GimpChannel *mask,
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gint off_x,
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gint off_y);
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void gimp_channel_load (GimpChannel *mask,
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GimpChannel *channel);
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void gimp_channel_layer_alpha (GimpChannel *mask,
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GimpLayer *layer);
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void gimp_channel_layer_mask (GimpChannel *mask,
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GimpLayer *layer);
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void gimp_channel_invalidate_bounds (GimpChannel *channel);
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#endif /* __GIMP_CHANNEL_H__ */
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