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gimp/app/gimage.h

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/* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GIMAGE_H__
#define __GIMAGE_H__
#include "boundary.h"
#include "drawable.h"
#include "channel.h"
#include "layer.h"
#include "paint_funcs.h"
#include "temp_buf.h"
#include "tile_manager.h"
/* the image types */
#define RGB_GIMAGE 0
#define RGBA_GIMAGE 1
#define GRAY_GIMAGE 2
#define GRAYA_GIMAGE 3
#define INDEXED_GIMAGE 4
#define INDEXEDA_GIMAGE 5
#define TYPE_HAS_ALPHA(t) ((t)==RGBA_GIMAGE || (t)==GRAYA_GIMAGE || (t)==INDEXEDA_GIMAGE)
#define GRAY_PIX 0
#define ALPHA_G_PIX 1
#define RED_PIX 0
#define GREEN_PIX 1
#define BLUE_PIX 2
#define ALPHA_PIX 3
#define INDEXED_PIX 0
#define ALPHA_I_PIX 1
#define RGB 0
#define GRAY 1
#define INDEXED 2
#define MAX_CHANNELS 4
/* the image fill types */
#define BACKGROUND_FILL 0
#define WHITE_FILL 1
#define TRANSPARENT_FILL 2
#define NO_FILL 3
#define COLORMAP_SIZE 768
#define HORIZONTAL_GUIDE 1
#define VERTICAL_GUIDE 2
typedef enum
{
Red,
Green,
Blue,
Gray,
Indexed,
Auxillary
} ChannelType;
typedef enum
{
ExpandAsNecessary,
ClipToImage,
ClipToBottomLayer,
FlattenImage
} MergeType;
/* structure declarations */
typedef struct _Guide Guide;
typedef struct _GImage GImage;
struct _Guide
{
int ref_count;
int position;
int orientation;
};
struct _GImage
{
char *filename; /* original filename */
int has_filename; /* has a valid filename */
int width, height; /* width and height attributes */
int base_type; /* base gimage type */
unsigned char * cmap; /* colormap--for indexed */
int num_cols; /* number of cols--for indexed */
int dirty; /* dirty flag -- # of ops */
int undo_on; /* Is undo enabled? */
int instance_count; /* number of instances */
int ref_count; /* number of references */
TileManager *shadow; /* shadow buffer tiles */
int ID; /* Unique gimage identifier */
/* Projection attributes */
int flat; /* Is the gimage flat? */
int construct_flag; /* flag for construction */
int proj_type; /* type of the projection image */
int proj_bytes; /* bpp in projection image */
int proj_level; /* projection level */
TileManager *projection; /* The projection--layers & */
/* channels */
GList *guides; /* guides */
/* Layer/Channel attributes */
GSList *layers; /* the list of layers */
GSList *channels; /* the list of masks */
GSList *layer_stack; /* the layers in MRU order */
Layer * active_layer; /* ID of active layer */
Channel * active_channel; /* ID of active channel */
Layer * floating_sel; /* ID of fs layer */
Channel * selection_mask; /* selection mask channel */
int visible [MAX_CHANNELS]; /* visible channels */
int active [MAX_CHANNELS]; /* active channels */
int by_color_select; /* TRUE if there's an active */
/* "by color" selection dialog */
/* Undo apparatus */
GSList *undo_stack; /* stack for undo operations */
GSList *redo_stack; /* stack for redo operations */
int undo_bytes; /* bytes in undo stack */
int undo_levels; /* levels in undo stack */
int pushing_undo_group; /* undo group status flag */
/* Composite preview */
TempBuf *comp_preview; /* the composite preview */
int comp_preview_valid[3]; /* preview valid-1/channel */
};
/* function declarations */
GImage * gimage_new (int, int, int);
void gimage_set_filename (GImage *, char *);
void gimage_resize (GImage *, int, int, int, int);
void gimage_scale (GImage *, int, int);
GImage * gimage_get_named (char *);
GImage * gimage_get_ID (int);
TileManager * gimage_shadow (GImage *, int, int, int);
void gimage_free_shadow (GImage *);
void gimage_delete (GImage *);
void gimage_apply_image (GImage *, GimpDrawable *, PixelRegion *, int, int, int,
TileManager *, int, int);
void gimage_replace_image (GImage *, GimpDrawable *, PixelRegion *, int, int,
PixelRegion *, int, int);
void gimage_get_foreground (GImage *, GimpDrawable *, unsigned char *);
void gimage_get_background (GImage *, GimpDrawable *, unsigned char *);
void gimage_get_color (GImage *, int, unsigned char *,
unsigned char *);
void gimage_transform_color (GImage *, GimpDrawable *, unsigned char *,
unsigned char *, int);
Guide* gimage_add_hguide (GImage *);
Guide* gimage_add_vguide (GImage *);
void gimage_add_guide (GImage *, Guide *);
void gimage_remove_guide (GImage *, Guide *);
void gimage_delete_guide (GImage *, Guide *);
/* layer/channel functions */
int gimage_get_layer_index (GImage *, Layer *);
int gimage_get_channel_index (GImage *, Channel *);
Layer * gimage_get_active_layer (GImage *);
Channel * gimage_get_active_channel (GImage *);
Channel * gimage_get_mask (GImage *);
int gimage_get_component_active (GImage *, ChannelType);
int gimage_get_component_visible (GImage *, ChannelType);
int gimage_layer_boundary (GImage *, BoundSeg **, int *);
Layer * gimage_set_active_layer (GImage *, Layer *);
Channel * gimage_set_active_channel (GImage *, Channel *);
Channel * gimage_unset_active_channel (GImage *);
void gimage_set_component_active (GImage *, ChannelType, int);
void gimage_set_component_visible (GImage *, ChannelType, int);
Layer * gimage_pick_correlate_layer (GImage *, int, int);
void gimage_set_layer_mask_apply (GImage *, int);
void gimage_set_layer_mask_edit (GImage *, Layer *, int);
void gimage_set_layer_mask_show (GImage *, int);
Layer * gimage_raise_layer (GImage *, Layer *);
Layer * gimage_lower_layer (GImage *, Layer *);
Layer * gimage_merge_visible_layers (GImage *, MergeType);
Layer * gimage_flatten (GImage *);
Layer * gimage_merge_layers (GImage *, GSList *, MergeType);
Layer * gimage_add_layer (GImage *, Layer *, int);
Layer * gimage_remove_layer (GImage *, Layer *);
LayerMask * gimage_add_layer_mask (GImage *, Layer *, LayerMask *);
Channel * gimage_remove_layer_mask (GImage *, Layer *, int);
Channel * gimage_raise_channel (GImage *, Channel *);
Channel * gimage_lower_channel (GImage *, Channel *);
Channel * gimage_add_channel (GImage *, Channel *, int);
Channel * gimage_remove_channel (GImage *, Channel *);
void gimage_construct (GImage *, int, int, int, int);
void gimage_invalidate (GImage *, int, int, int, int, int, int, int, int);
void gimage_validate (TileManager *, Tile *, int);
void gimage_inflate (GImage *);
void gimage_deflate (GImage *);
/* Access functions */
int gimage_is_flat (GImage *);
int gimage_is_empty (GImage *);
GimpDrawable * gimage_active_drawable (GImage *);
int gimage_base_type (GImage *);
int gimage_base_type_with_alpha (GImage *);
char * gimage_filename (GImage *);
int gimage_enable_undo (GImage *);
int gimage_disable_undo (GImage *);
int gimage_dirty (GImage *);
int gimage_clean (GImage *);
void gimage_clean_all (GImage *);
Layer * gimage_floating_sel (GImage *);
unsigned char * gimage_cmap (GImage *);
/* projection access functions */
TileManager * gimage_projection (GImage *);
int gimage_projection_type (GImage *);
int gimage_projection_bytes (GImage *);
int gimage_projection_opacity (GImage *);
void gimage_projection_realloc (GImage *);
/* composite access functions */
TileManager * gimage_composite (GImage *);
int gimage_composite_type (GImage *);
int gimage_composite_bytes (GImage *);
TempBuf * gimage_composite_preview (GImage *, ChannelType, int, int);
int gimage_preview_valid (GImage *, ChannelType);
void gimage_invalidate_preview (GImage *);
void gimage_invalidate_previews (void);
/* from drawable.c */
GImage * drawable_gimage (GimpDrawable*);
#endif /* __GIMAGE_H__ */
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