/* The GIMP -- an image manipulation program * 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef __CHANNEL_H__ #define __CHANNEL_H__ #include "gimpdrawable.h" /* OPERATIONS */ /* Half way point where a region is no longer visible in a selection */ #define HALF_WAY 127 /* structure declarations */ #define GIMP_TYPE_CHANNEL (gimp_channel_get_type ()) #define GIMP_CHANNEL(obj) (GTK_CHECK_CAST ((obj), GIMP_TYPE_CHANNEL, GimpChannel)) #define GIMP_CHANNEL_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CHANNEL, GimpChannelClass)) #define GIMP_IS_CHANNEL(obj) (GTK_CHECK_TYPE ((obj), GIMP_TYPE_CHANNEL)) #define GIMP_IS_CHANNEL_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CHANNEL)) typedef struct _GimpChannelClass GimpChannelClass; struct _GimpChannel { GimpDrawable parent_instance; GimpRGB color; /* Also stored the opacity */ gboolean show_masked; /* Show masked areas--as */ /* opposed to selected areas */ /* Selection mask variables */ gboolean boundary_known; /* is the current boundary valid */ BoundSeg *segs_in; /* outline of selected region */ BoundSeg *segs_out; /* outline of selected region */ gint num_segs_in; /* number of lines in boundary */ gint num_segs_out; /* number of lines in boundary */ gboolean empty; /* is the region empty? */ gboolean bounds_known; /* recalculate the bounds? */ gint x1, y1; /* coordinates for bounding box */ gint x2, y2; /* lower right hand coordinate */ }; struct _GimpChannelClass { GimpDrawableClass parent_class; }; /* Special undo type */ typedef struct _ChannelUndo ChannelUndo; struct _ChannelUndo { Channel *channel; /* the actual channel */ gint prev_position; /* former position in list */ Channel *prev_channel; /* previous active channel */ }; /* Special undo type */ typedef struct _MaskUndo MaskUndo; struct _MaskUndo { TileManager *tiles; /* the actual mask */ gint x, y; /* offsets */ }; /* function declarations */ GtkType gimp_channel_get_type (void); Channel * channel_new (GimpImage *gimage, gint width, gint height, const gchar *name, const GimpRGB *color); Channel * channel_copy (const Channel *channel); const gchar * channel_get_name (const Channel *channel); void channel_set_name (Channel *channel, const gchar *name); gint channel_get_opacity (const Channel *channel); void channel_set_opacity (Channel *channel, gint opacity); const GimpRGB * channel_get_color (const Channel *channel); void channel_set_color (Channel *channel, const GimpRGB *color); void channel_delete (Channel *channel); void channel_scale (Channel *channel, gint new_width, gint new_height); void channel_resize (Channel *channel, gint new_width, gint new_height, gint offx, gint offy); void channel_update (Channel *channel); /* access functions */ gboolean channel_toggle_visibility (Channel *channel); TempBuf * channel_preview (Channel *channel, gint width, gint height); void channel_invalidate_previews (GimpImage *gimage); Tattoo channel_get_tattoo (const Channel *channel); void channel_set_tattoo (Channel *channel, Tattoo value); /* selection mask functions */ Channel * channel_new_mask (GimpImage *gimage, gint width, gint height); gboolean channel_boundary (Channel *mask, BoundSeg **segs_in, BoundSeg **segs_out, gint *num_segs_in, gint *num_segs_out, gint x1, gint y1, gint x2, gint y2); gboolean channel_bounds (Channel *mask, gint *x1, gint *y1, gint *x2, gint *y2); gint channel_value (Channel *mask, gint x, gint y); gboolean channel_is_empty (Channel *mask); void channel_add_segment (Channel *mask, gint x, gint y, gint width, gint value); void channel_sub_segment (Channel *mask, gint x, gint y, gint width, gint value); void channel_combine_rect (Channel *mask, ChannelOps op, gint x, gint y, gint w, gint h); void channel_combine_ellipse (Channel *mask, ChannelOps op, gint x, gint y, gint w, gint h, gboolean antialias); void channel_combine_mask (Channel *mask, Channel *add_on, ChannelOps op, gint off_x, gint off_y); void channel_feather (Channel *input, Channel *output, gdouble radius_x, gdouble radius_y, ChannelOps op, gint off_x, gint off_y); void channel_push_undo (Channel *mask); void channel_clear (Channel *mask); void channel_invert (Channel *mask); void channel_sharpen (Channel *mask); void channel_all (Channel *mask); void channel_border (Channel *mask, gint radius_x, gint radius_y); void channel_grow (Channel *mask, gint radius_x, gint radius_y); void channel_shrink (Channel *mask, gint radius_x, gint radius_y, gboolean edge_lock); void channel_translate (Channel *mask, gint off_x, gint off_y); void channel_load (Channel *mask, Channel *channel); void channel_invalidate_bounds (Channel *channel); #define gimp_drawable_channel GIMP_IS_CHANNEL #endif /* __CHANNEL_H__ */