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gimp/app/gimpchannel.h
EDT 1999 Austin Donnelly bf8db4adc8 Honest, guv, it's not a feature - it's a tightly integrated package of 
Mon Sep 20 12:51:30 EDT 1999  Austin Donnelly  <austin@gimp.org>

	Honest, guv, it's not a feature - it's a tightly integrated
	package of undo system cleanups and fixes.

	NEW FILES:
	* app/undo_history.c: window showing recent undo (and redo) steps
	    available.
	* app/undo_types.h: broken out of undo.h to fix circular includes.

	MODIFIED FILES:
	* app/Makefile.am: compile undo_history.c
	* app/channel.h: use enum for channel undo type, not just magic
	    numbers.
	* app/layer.h: same for layer undos.
	* app/commands.c: edit_show_undo_history_cmd_callback() function to
	    pull up undo history window.
	* app/commands.h: prototype for above.
	* app/gdisplay.c: make undo / redo menu items sensitive according
	    to whether they would do anything.  Would be easy to change
	    the text to say what would be undone/redone, but I don't know
	    the GTK.
	* app/gimpimage.c: new signal emitted by gimage:
	    UNDO_EVENT. gimp_image_undo_event() function to emit it.
	* app/gimpimage.h: prototype for above.
	* app/gimpimageP.h: pushing_undo_group member is now an undo_type,
	    not an int.  Keep undo history widget here too (if created).
	* app/menus.c: add "Edit/Undo history..." to image menu.
	* app/undo.c: new types: enums undo_type and undo_state rather than
	    ints and magic numbers.  All undo_pop_* and undo_free_*
	    functions made static.  New static function
	    undo_type_to_name().  Issue undo event signals on various
	    important events (eg undo pushed, undo popped etc).
	    undo_push() now takes a "dirties_image" arg to say whether
	    image should be dirtied.  Layer moves now dirty the image.  A
	    couple of g_return_if_fails () on undo_pop and undo_redo to
	    assert we're not in the middle of an undo group.
	    undo_get_{undo,redo}_name() to peek at names of top items on
	    undo and redo stacks resp.   undo_map_over_{undo,redo}_stack()
	    to run a function for each item or group on stack.  Layer and
	    channel undos use symbolic names rather than 0 or 1.  Array
	    mapping undo types to names.
	* app/undo.h: split out undo types to undo_types.h.  Prototypes
	    for functions described above.  undo_event_t enum.
	    undo_history_new() prototype lives here too.

	Random other fixes:
	* app/gimpdrawable.c
	* app/image_render.c: default labels in switches to keep egcs happy.

	* app/nav_window.c: some fixes to (sort of) cope with image res !=
	    screen res.  Still needs work to handle non-square pixels
	    properly.

	* app/paths_dialog.c: bad idea to call gimp_image_dirty()
	    directly.  Even though it's currently commented out.
1999-09-20 17:15:20 +00:00

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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __CHANNEL_H__
#define __CHANNEL_H__
#include "apptypes.h"
#include "drawable.h"
#include "boundary.h"
#include "temp_buf.h"
#include "tile_manager.h"
#include "gimpimageF.h"
/* OPERATIONS */
typedef enum
{
ADD,
SUB,
REPLACE,
INTERSECT
} ChannelOps;
/* 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))
GtkType gimp_channel_get_type (void);
typedef enum {
CHANNEL_ADD_UNDO,
CHANNEL_REMOVE_UNDO
} channel_undo_type;
/* 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 */
channel_undo_type undo_type; /* is this a new channel undo */
/* or a remove channel undo? */
};
/* Special undo type */
typedef struct _MaskUndo MaskUndo;
struct _MaskUndo
{
TileManager *tiles; /* the actual mask */
gint x, y; /* offsets */
};
/* function declarations */
Channel * channel_new (GimpImage*,
gint, gint, gchar *, gint, guchar *);
Channel * channel_copy (Channel *);
Channel * channel_ref (Channel *);
void channel_unref (Channel *);
gchar * channel_get_name (Channel *);
void channel_set_name (Channel *, gchar *);
gint channel_get_opacity (Channel *);
void channel_set_opacity (Channel *, gint);
gchar * channel_get_color (Channel *);
void channel_set_color (Channel *, gchar *);
Channel * channel_get_ID (gint);
void channel_delete (Channel *);
void channel_scale (Channel *, gint, gint);
void channel_resize (Channel *, gint, gint, gint, gint);
void channel_update (Channel *);
/* access functions */
gboolean channel_toggle_visibility (Channel *);
TempBuf * channel_preview (Channel *, gint, gint);
void channel_invalidate_previews (GimpImage*);
Tattoo channel_get_tattoo (const Channel *);
/* selection mask functions */
Channel * channel_new_mask (GimpImage *, gint, gint);
gboolean channel_boundary (Channel *, BoundSeg **, BoundSeg **,
gint *, gint *, gint, gint, gint, gint);
gboolean channel_bounds (Channel *,
gint *, gint *, gint *, gint *);
gint channel_value (Channel *, gint, gint);
gboolean channel_is_empty (Channel *);
void channel_add_segment (Channel *, gint, gint, gint, gint);
void channel_sub_segment (Channel *, gint, gint, gint, gint);
void channel_inter_segment (Channel *, gint, gint, gint, gint);
void channel_combine_rect (Channel *,
ChannelOps, gint, gint, gint, gint);
void channel_combine_ellipse (Channel *,
ChannelOps,
gint, gint, gint, gint, gboolean);
void channel_combine_mask (Channel *, Channel *,
ChannelOps, gint, gint);
void channel_feather (Channel *, Channel *,
gdouble, gdouble,
ChannelOps, gint, gint);
void channel_push_undo (Channel *);
void channel_clear (Channel *);
void channel_invert (Channel *);
void channel_sharpen (Channel *);
void channel_all (Channel *);
void channel_border (Channel * channel,
gint radius_x,
gint radius_y);
void channel_grow (Channel * channel,
gint radius_x,
gint radius_y);
void channel_shrink (Channel * channel,
gint radius_x,
gint radius_y,
gboolean edge_lock);
void channel_translate (Channel *, gint, gint);
void channel_load (Channel *, Channel *);
void channel_invalidate_bounds (Channel *);
#define drawable_channel GIMP_IS_CHANNEL
#endif /* __CHANNEL_H__ */
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