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gimp/app/core/gimpimage-undo-push.c

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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.
*/
#include "config.h"
#include <string.h>
#include <glib-object.h>
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "config/gimpconfig.h"
#include "config/gimpconfig-utils.h"
#include "base/pixel-region.h"
#include "base/tile-manager.h"
#include "paint-funcs/paint-funcs.h"
#include "gimp-parasites.h"
#include "gimp.h"
#include "gimpgrid.h"
#include "gimpimage-colormap.h"
#include "gimpimage-grid.h"
#include "gimpimage-guides.h"
#include "gimpimage-undo.h"
#include "gimpimage.h"
#include "gimpitemundo.h"
#include "gimplayer-floating-sel.h"
#include "gimplayer.h"
#include "gimplayermask.h"
#include "gimplist.h"
#include "gimpparasitelist.h"
#include "text/gimptextlayer.h"
#include "text/gimptextundo.h"
#include "vectors/gimpvectors.h"
#include "gimp-intl.h"
/*********************/
/* Image Type Undo */
/*********************/
typedef struct _ImageTypeUndo ImageTypeUndo;
struct _ImageTypeUndo
{
GimpImageBaseType base_type;
};
static gboolean undo_pop_image_type (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_image_type (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_type (GimpImage *gimage,
const gchar *undo_desc)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ImageTypeUndo),
sizeof (ImageTypeUndo),
GIMP_UNDO_IMAGE_TYPE, undo_desc,
TRUE,
undo_pop_image_type,
undo_free_image_type)))
{
ImageTypeUndo *itu = new->data;
itu->base_type = gimage->base_type;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_type (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ImageTypeUndo *itu = undo->data;
GimpImageBaseType tmp;
tmp = itu->base_type;
itu->base_type = undo->gimage->base_type;
undo->gimage->base_type = tmp;
gimp_image_colormap_changed (undo->gimage, -1);
if (itu->base_type != undo->gimage->base_type)
accum->mode_changed = TRUE;
return TRUE;
}
static void
undo_free_image_type (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/*********************/
/* Image Size Undo */
/*********************/
typedef struct _ImageSizeUndo ImageSizeUndo;
struct _ImageSizeUndo
{
gint width;
gint height;
};
static gboolean undo_pop_image_size (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_image_size (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_size (GimpImage *gimage,
const gchar *undo_desc)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ImageSizeUndo),
sizeof (ImageSizeUndo),
GIMP_UNDO_IMAGE_SIZE, undo_desc,
TRUE,
undo_pop_image_size,
undo_free_image_size)))
{
ImageSizeUndo *isu = new->data;
isu->width = gimage->width;
isu->height = gimage->height;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_size (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ImageSizeUndo *isu = undo->data;
gint width;
gint height;
width = isu->width;
height = isu->height;
isu->width = undo->gimage->width;
isu->height = undo->gimage->height;
undo->gimage->width = width;
undo->gimage->height = height;
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (gimp_image_get_mask (undo->gimage)));
if (undo->gimage->width != isu->width ||
undo->gimage->height != isu->height)
accum->size_changed = TRUE;
return TRUE;
}
static void
undo_free_image_size (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/***************************/
/* Image Resolution Undo */
/***************************/
typedef struct _ResolutionUndo ResolutionUndo;
struct _ResolutionUndo
{
gdouble xres;
gdouble yres;
GimpUnit unit;
};
static gboolean undo_pop_image_resolution (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_image_resolution (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_resolution (GimpImage *gimage,
const gchar *undo_desc)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ResolutionUndo),
sizeof (ResolutionUndo),
GIMP_UNDO_IMAGE_RESOLUTION, undo_desc,
TRUE,
undo_pop_image_resolution,
undo_free_image_resolution)))
{
ResolutionUndo *ru = new->data;
ru->xres = gimage->xresolution;
ru->yres = gimage->yresolution;
ru->unit = gimage->unit;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_resolution (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ResolutionUndo *ru = undo->data;
if (ABS (ru->xres - undo->gimage->xresolution) >= 1e-5 ||
ABS (ru->yres - undo->gimage->yresolution) >= 1e-5)
{
gdouble xres;
gdouble yres;
xres = undo->gimage->xresolution;
yres = undo->gimage->yresolution;
undo->gimage->xresolution = ru->xres;
undo->gimage->yresolution = ru->yres;
ru->xres = xres;
ru->yres = yres;
accum->resolution_changed = TRUE;
}
if (ru->unit != undo->gimage->unit)
{
GimpUnit unit;
unit = undo->gimage->unit;
undo->gimage->unit = ru->unit;
ru->unit = unit;
accum->unit_changed = TRUE;
}
return TRUE;
}
static void
undo_free_image_resolution (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/****************/
/* Grid Undo */
/****************/
typedef struct _GridUndo GridUndo;
struct _GridUndo
{
GimpGrid *grid;
};
static gboolean undo_pop_image_grid (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_image_grid (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_grid (GimpImage *gimage,
const gchar *undo_desc,
GimpGrid *grid)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_GRID (grid), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (GridUndo),
sizeof (GridUndo),
GIMP_UNDO_IMAGE_GRID, undo_desc,
TRUE,
undo_pop_image_grid,
undo_free_image_grid)))
{
GridUndo *gu = new->data;
gu->grid = gimp_config_duplicate (GIMP_CONFIG (grid));
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_grid (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GridUndo *gu = undo->data;
GimpGrid *grid;
grid = gimp_config_duplicate (GIMP_CONFIG (undo->gimage->grid));
gimp_image_set_grid (undo->gimage, gu->grid, FALSE);
g_object_unref (gu->grid);
gu->grid = grid;
return TRUE;
}
static void
undo_free_image_grid (GimpUndo *undo,
GimpUndoMode undo_mode)
{
GridUndo *gu = undo->data;
if (gu->grid)
g_object_unref (gu->grid);
g_free (gu);
}
/****************/
/* Guide Undo */
/****************/
typedef struct _GuideUndo GuideUndo;
struct _GuideUndo
{
GimpGuide *guide;
gint position;
GimpOrientationType orientation;
};
static gboolean undo_pop_image_guide (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_image_guide (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_guide (GimpImage *gimage,
const gchar *undo_desc,
GimpGuide *guide)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (guide != NULL, FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (GuideUndo),
sizeof (GuideUndo),
GIMP_UNDO_IMAGE_GUIDE, undo_desc,
TRUE,
undo_pop_image_guide,
undo_free_image_guide)))
{
GuideUndo *gu = new->data;
gu->guide = gimp_image_guide_ref (guide);
gu->position = guide->position;
gu->orientation = guide->orientation;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_guide (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GuideUndo *gu = undo->data;
gint old_position;
GimpOrientationType old_orientation;
old_position = gu->guide->position;
old_orientation = gu->guide->orientation;
if (gu->guide->position == -1)
{
undo->gimage->guides = g_list_prepend (undo->gimage->guides, gu->guide);
gu->guide->position = gu->position;
gimp_image_guide_ref (gu->guide);
gimp_image_update_guide (undo->gimage, gu->guide);
}
else if (gu->position == -1)
{
gimp_image_remove_guide (undo->gimage, gu->guide, FALSE);
}
else
{
gimp_image_update_guide (undo->gimage, gu->guide);
gu->guide->position = gu->position;
gimp_image_update_guide (undo->gimage, gu->guide);
}
gu->guide->orientation = gu->orientation;
gu->position = old_position;
gu->orientation = old_orientation;
return TRUE;
}
static void
undo_free_image_guide (GimpUndo *undo,
GimpUndoMode undo_mode)
{
GuideUndo *gu = undo->data;
gimp_image_guide_unref (gu->guide);
g_free (gu);
}
/*******************/
/* Colormap Undo */
/*******************/
typedef struct _ColormapUndo ColormapUndo;
struct _ColormapUndo
{
gint num_colors;
guchar *cmap;
};
static gboolean undo_pop_image_colormap (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_image_colormap (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_colormap (GimpImage *gimage,
const gchar *undo_desc)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ColormapUndo),
sizeof (ColormapUndo),
GIMP_UNDO_IMAGE_COLORMAP, undo_desc,
TRUE,
undo_pop_image_colormap,
undo_free_image_colormap)))
{
ColormapUndo *cu = new->data;
cu->num_colors = gimp_image_get_colormap_size (gimage);
cu->cmap = g_memdup (gimp_image_get_colormap (gimage),
cu->num_colors * 3);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_colormap (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ColormapUndo *cu = undo->data;
guchar *cmap;
gint num_colors;
num_colors = gimp_image_get_colormap_size (undo->gimage);
cmap = g_memdup (gimp_image_get_colormap (undo->gimage),
num_colors * 3);
gimp_image_set_colormap (undo->gimage, cu->cmap, cu->num_colors, FALSE);
if (cu->cmap)
g_free (cu->cmap);
cu->num_colors = num_colors;
cu->cmap = cmap;
return TRUE;
}
static void
undo_free_image_colormap (GimpUndo *undo,
GimpUndoMode undo_mode)
{
ColormapUndo *cu = undo->data;
if (cu->cmap)
g_free (cu->cmap);
g_free (cu);
}
/*******************/
/* Drawable Undo */
/*******************/
typedef struct _DrawableUndo DrawableUndo;
struct _DrawableUndo
{
TileManager *tiles;
gboolean sparse;
gint x, y, width, height;
};
static gboolean undo_pop_drawable (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_drawable (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_drawable (GimpImage *gimage,
const gchar *undo_desc,
GimpDrawable *drawable,
TileManager *tiles,
gboolean sparse,
gint x,
gint y,
gint width,
gint height)
{
GimpItem *item;
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (tiles != NULL, FALSE);
g_return_val_if_fail (sparse == TRUE ||
tile_manager_width (tiles) == width, FALSE);
g_return_val_if_fail (sparse == TRUE ||
tile_manager_height (tiles) == height, FALSE);
item = GIMP_ITEM (drawable);
g_return_val_if_fail (sparse == FALSE ||
tile_manager_width (tiles) == gimp_item_width (item),
FALSE);
g_return_val_if_fail (sparse == FALSE ||
tile_manager_height (tiles) == gimp_item_height (item),
FALSE);
size = sizeof (DrawableUndo) + tile_manager_get_memsize (tiles);
if ((new = gimp_image_undo_push_item (gimage, item,
size, sizeof (DrawableUndo),
GIMP_UNDO_DRAWABLE, undo_desc,
TRUE,
undo_pop_drawable,
undo_free_drawable)))
{
DrawableUndo *drawable_undo = new->data;
drawable_undo->tiles = tile_manager_ref (tiles);
drawable_undo->sparse = sparse;
drawable_undo->x = x;
drawable_undo->y = y;
drawable_undo->width = width;
drawable_undo->height = height;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_drawable (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
DrawableUndo *drawable_undo = undo->data;
undo->size -= tile_manager_get_memsize (drawable_undo->tiles);
gimp_drawable_swap_pixels (GIMP_DRAWABLE (GIMP_ITEM_UNDO (undo)->item),
drawable_undo->tiles,
drawable_undo->sparse,
drawable_undo->x,
drawable_undo->y,
drawable_undo->width,
drawable_undo->height);
undo->size += tile_manager_get_memsize (drawable_undo->tiles);
return TRUE;
}
static void
undo_free_drawable (GimpUndo *undo,
GimpUndoMode undo_mode)
{
DrawableUndo *drawable_undo = undo->data;
tile_manager_unref (drawable_undo->tiles);
g_free (drawable_undo);
}
/***********************/
/* Drawable Mod Undo */
/***********************/
typedef struct _DrawableModUndo DrawableModUndo;
struct _DrawableModUndo
{
TileManager *tiles;
GimpImageType type;
gint offset_x;
gint offset_y;
};
static gboolean undo_pop_drawable_mod (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_drawable_mod (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_drawable_mod (GimpImage *gimage,
const gchar *undo_desc,
GimpDrawable *drawable)
{
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
size = sizeof (DrawableModUndo) + tile_manager_get_memsize (drawable->tiles);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (drawable),
size, sizeof (DrawableModUndo),
GIMP_UNDO_DRAWABLE_MOD, undo_desc,
TRUE,
undo_pop_drawable_mod,
undo_free_drawable_mod)))
{
DrawableModUndo *drawable_undo = new->data;
drawable_undo->tiles = tile_manager_ref (drawable->tiles);
drawable_undo->type = drawable->type;
drawable_undo->offset_x = GIMP_ITEM (drawable)->offset_x;
drawable_undo->offset_y = GIMP_ITEM (drawable)->offset_y;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_drawable_mod (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
DrawableModUndo *drawable_undo = undo->data;
GimpDrawable *drawable = GIMP_DRAWABLE (GIMP_ITEM_UNDO (undo)->item);
TileManager *tiles;
GimpImageType drawable_type;
gint offset_x, offset_y;
undo->size -= tile_manager_get_memsize (drawable_undo->tiles);
tiles = drawable_undo->tiles;
drawable_type = drawable_undo->type;
offset_x = drawable_undo->offset_x;
offset_y = drawable_undo->offset_y;
drawable_undo->tiles = tile_manager_ref (drawable->tiles);
drawable_undo->type = drawable->type;
drawable_undo->offset_x = GIMP_ITEM (drawable)->offset_x;
drawable_undo->offset_y = GIMP_ITEM (drawable)->offset_y;
gimp_drawable_set_tiles_full (drawable, FALSE, NULL,
tiles, drawable_type, offset_x, offset_y);
tile_manager_unref (tiles);
undo->size += tile_manager_get_memsize (drawable_undo->tiles);
return TRUE;
}
static void
undo_free_drawable_mod (GimpUndo *undo,
GimpUndoMode undo_mode)
{
DrawableModUndo *drawable_undo = undo->data;
tile_manager_unref (drawable_undo->tiles);
g_free (drawable_undo);
}
/***************/
/* Mask Undo */
/***************/
typedef struct _MaskUndo MaskUndo;
struct _MaskUndo
{
TileManager *tiles; /* the actual mask */
gint x, y; /* offsets */
};
static gboolean undo_pop_mask (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_mask (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_mask (GimpImage *gimage,
const gchar *undo_desc,
GimpChannel *mask)
{
TileManager *undo_tiles = NULL;
gint x1, y1, x2, y2;
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (mask), FALSE);
size = sizeof (MaskUndo);
if (gimp_channel_bounds (mask, &x1, &y1, &x2, &y2))
{
GimpDrawable *drawable = GIMP_DRAWABLE (mask);
PixelRegion srcPR, destPR;
undo_tiles = tile_manager_new (x2 - x1, y2 - y1,
gimp_drawable_bytes (drawable));
pixel_region_init (&srcPR, gimp_drawable_data (drawable),
x1, y1, x2 - x1, y2 - y1, FALSE);
pixel_region_init (&destPR, undo_tiles,
0, 0, x2 - x1, y2 - y1, TRUE);
copy_region (&srcPR, &destPR);
size += tile_manager_get_memsize (undo_tiles);
}
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (mask),
size, sizeof (MaskUndo),
GIMP_UNDO_MASK, undo_desc,
FALSE,
undo_pop_mask,
undo_free_mask)))
{
MaskUndo *mask_undo = new->data;
mask_undo->tiles = undo_tiles;
mask_undo->x = x1;
mask_undo->y = y1;
return TRUE;
}
if (undo_tiles)
tile_manager_unref (undo_tiles);
return FALSE;
}
static gboolean
undo_pop_mask (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
MaskUndo *mu = undo->data;
GimpChannel *channel = GIMP_CHANNEL (GIMP_ITEM_UNDO (undo)->item);
TileManager *new_tiles;
PixelRegion srcPR, destPR;
gint x1, y1, x2, y2;
gint width = 0;
gint height = 0;
guchar empty = 0;
if (mu->tiles)
undo->size -= tile_manager_get_memsize (mu->tiles);
if (gimp_channel_bounds (channel, &x1, &y1, &x2, &y2))
{
new_tiles = tile_manager_new ((x2 - x1), (y2 - y1), 1);
pixel_region_init (&srcPR, GIMP_DRAWABLE (channel)->tiles,
x1, y1, (x2 - x1), (y2 - y1), FALSE);
pixel_region_init (&destPR, new_tiles,
0, 0, (x2 - x1), (y2 - y1), TRUE);
copy_region (&srcPR, &destPR);
pixel_region_init (&srcPR, GIMP_DRAWABLE (channel)->tiles,
x1, y1, (x2 - x1), (y2 - y1), TRUE);
color_region (&srcPR, &empty);
}
else
{
new_tiles = NULL;
}
if (mu->tiles)
{
width = tile_manager_width (mu->tiles);
height = tile_manager_height (mu->tiles);
pixel_region_init (&srcPR, mu->tiles,
0, 0, width, height, FALSE);
pixel_region_init (&destPR, GIMP_DRAWABLE (channel)->tiles,
mu->x, mu->y, width, height, TRUE);
copy_region (&srcPR, &destPR);
tile_manager_unref (mu->tiles);
}
/* invalidate the current bounds and boundary of the mask */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (channel));
if (mu->tiles)
{
channel->empty = FALSE;
channel->x1 = mu->x;
channel->y1 = mu->y;
channel->x2 = mu->x + width;
channel->y2 = mu->y + height;
}
else
{
channel->empty = TRUE;
channel->x1 = 0;
channel->y1 = 0;
channel->x2 = GIMP_ITEM (channel)->width;
channel->y2 = GIMP_ITEM (channel)->height;
}
/* we know the bounds */
channel->bounds_known = TRUE;
/* set the new mask undo parameters */
mu->tiles = new_tiles;
mu->x = x1;
mu->y = y1;
gimp_drawable_update (GIMP_DRAWABLE (channel),
0, 0,
GIMP_ITEM (channel)->width,
GIMP_ITEM (channel)->height);
if (mu->tiles)
undo->size += tile_manager_get_memsize (mu->tiles);
return TRUE;
}
static void
undo_free_mask (GimpUndo *undo,
GimpUndoMode undo_mode)
{
MaskUndo *mu = undo->data;
if (mu->tiles)
tile_manager_unref (mu->tiles);
g_free (mu);
}
/**********************/
/* Item Rename Undo */
/**********************/
typedef struct _ItemRenameUndo ItemRenameUndo;
struct _ItemRenameUndo
{
gchar *name;
};
static gboolean undo_pop_item_rename (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_item_rename (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_item_rename (GimpImage *gimage,
const gchar *undo_desc,
GimpItem *item)
{
GimpUndo *new;
gint64 size;
const gchar *name;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
name = gimp_object_get_name (GIMP_OBJECT (item));
size = sizeof (ItemRenameUndo) + strlen (name) + 1;
if ((new = gimp_image_undo_push_item (gimage, item,
size, sizeof (ItemRenameUndo),
GIMP_UNDO_ITEM_RENAME, undo_desc,
TRUE,
undo_pop_item_rename,
undo_free_item_rename)))
{
ItemRenameUndo *iru = new->data;
iru->name = g_strdup (name);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_item_rename (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ItemRenameUndo *iru = undo->data;
GimpItem *item = GIMP_ITEM_UNDO (undo)->item;
gchar *tmp;
undo->size -= strlen (iru->name);
tmp = g_strdup (gimp_object_get_name (GIMP_OBJECT (item)));
gimp_object_set_name (GIMP_OBJECT (item), iru->name);
g_free (iru->name);
iru->name = tmp;
undo->size += strlen (iru->name);
return TRUE;
}
static void
undo_free_item_rename (GimpUndo *undo,
GimpUndoMode undo_mode)
{
ItemRenameUndo *iru = undo->data;
g_free (iru->name);
g_free (iru);
}
/****************************/
/* Item displacement Undo */
/****************************/
typedef struct _ItemDisplaceUndo ItemDisplaceUndo;
struct _ItemDisplaceUndo
{
gint old_offset_x;
gint old_offset_y;
};
static gboolean undo_pop_item_displace (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_item_displace (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_item_displace (GimpImage *gimage,
const gchar *undo_desc,
GimpItem *item)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
if ((new = gimp_image_undo_push_item (gimage, item,
sizeof (ItemDisplaceUndo),
sizeof (ItemDisplaceUndo),
GIMP_UNDO_ITEM_DISPLACE, undo_desc,
TRUE,
undo_pop_item_displace,
undo_free_item_displace)))
{
ItemDisplaceUndo *idu = new->data;
gimp_item_offsets (item, &idu->old_offset_x, &idu->old_offset_y);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_item_displace (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ItemDisplaceUndo *idu = undo->data;
GimpItem *item = GIMP_ITEM_UNDO (undo)->item;
gint offset_x;
gint offset_y;
gimp_item_offsets (item, &offset_x, &offset_y);
gimp_item_translate (item,
idu->old_offset_x - offset_x,
idu->old_offset_y - offset_y,
FALSE);
idu->old_offset_x = offset_x;
idu->old_offset_y = offset_y;
return TRUE;
}
static void
undo_free_item_displace (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/******************************/
/* Item Visibility Undo */
/******************************/
typedef struct _ItemVisibilityUndo ItemVisibilityUndo;
struct _ItemVisibilityUndo
{
gboolean old_visible;
};
static gboolean undo_pop_item_visibility (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_item_visibility (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_item_visibility (GimpImage *gimage,
const gchar *undo_desc,
GimpItem *item)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
if ((new = gimp_image_undo_push_item (gimage, item,
sizeof (ItemVisibilityUndo),
sizeof (ItemVisibilityUndo),
GIMP_UNDO_ITEM_VISIBILITY, undo_desc,
TRUE,
undo_pop_item_visibility,
undo_free_item_visibility)))
{
ItemVisibilityUndo *ivu = new->data;
ivu->old_visible = gimp_item_get_visible (item);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_item_visibility (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ItemVisibilityUndo *ivu = undo->data;
GimpItem *item = GIMP_ITEM_UNDO (undo)->item;
gboolean visible;
visible = gimp_item_get_visible (item);
gimp_item_set_visible (item, ivu->old_visible, FALSE);
ivu->old_visible = visible;
return TRUE;
}
static void
undo_free_item_visibility (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/**********************/
/* Item linked Undo */
/**********************/
typedef struct _ItemLinkedUndo ItemLinkedUndo;
struct _ItemLinkedUndo
{
gboolean old_linked;
};
static gboolean undo_pop_item_linked (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_item_linked (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_item_linked (GimpImage *gimage,
const gchar *undo_desc,
GimpItem *item)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
if ((new = gimp_image_undo_push_item (gimage, item,
sizeof (ItemLinkedUndo),
sizeof (ItemLinkedUndo),
GIMP_UNDO_ITEM_LINKED, undo_desc,
TRUE,
undo_pop_item_linked,
undo_free_item_linked)))
{
ItemLinkedUndo *ilu = new->data;
ilu->old_linked = gimp_item_get_linked (item);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_item_linked (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ItemLinkedUndo *ilu = undo->data;
GimpItem *item = GIMP_ITEM_UNDO (undo)->item;
gboolean linked;
linked = gimp_item_get_linked (item);
gimp_item_set_linked (item, ilu->old_linked, FALSE);
ilu->old_linked = linked;
return TRUE;
}
static void
undo_free_item_linked (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/***************************/
/* Layer Add/Remove Undo */
/***************************/
typedef struct _LayerUndo LayerUndo;
struct _LayerUndo
{
gint prev_position; /* former position in list */
GimpLayer *prev_layer; /* previous active layer */
};
static gboolean undo_push_layer (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer);
static gboolean undo_pop_layer (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_layer (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_layer_add (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer)
{
return undo_push_layer (gimage, undo_desc, GIMP_UNDO_LAYER_ADD,
layer, prev_position, prev_layer);
}
gboolean
gimp_image_undo_push_layer_remove (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer)
{
return undo_push_layer (gimage, undo_desc, GIMP_UNDO_LAYER_REMOVE,
layer, prev_position, prev_layer);
}
static gboolean
undo_push_layer (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer)
{
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
g_return_val_if_fail (prev_layer == NULL || GIMP_IS_LAYER (prev_layer),
FALSE);
g_return_val_if_fail (type == GIMP_UNDO_LAYER_ADD ||
type == GIMP_UNDO_LAYER_REMOVE, FALSE);
size = sizeof (LayerUndo);
if (type == GIMP_UNDO_LAYER_REMOVE)
size += gimp_object_get_memsize (GIMP_OBJECT (layer), NULL);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (layer),
size, sizeof (LayerUndo),
type, undo_desc,
TRUE,
undo_pop_layer,
undo_free_layer)))
{
LayerUndo *lu = new->data;
lu->prev_position = prev_position;
lu->prev_layer = prev_layer;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
LayerUndo *lu = undo->data;
GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
gboolean old_has_alpha;
old_has_alpha = gimp_image_has_alpha (undo->gimage);
if ((undo_mode == GIMP_UNDO_MODE_UNDO &&
undo->undo_type == GIMP_UNDO_LAYER_ADD) ||
(undo_mode == GIMP_UNDO_MODE_REDO &&
undo->undo_type == GIMP_UNDO_LAYER_REMOVE))
{
/* remove layer */
undo->size += gimp_object_get_memsize (GIMP_OBJECT (layer), NULL);
/* record the current position */
lu->prev_position = gimp_image_get_layer_index (undo->gimage, layer);
gimp_container_remove (undo->gimage->layers, GIMP_OBJECT (layer));
undo->gimage->layer_stack = g_slist_remove (undo->gimage->layer_stack,
layer);
if (gimp_layer_is_floating_sel (layer))
{
undo->gimage->floating_sel = NULL;
/* activate the underlying drawable */
floating_sel_activate_drawable (layer);
gimp_image_floating_selection_changed (undo->gimage);
}
else if (layer == gimp_image_get_active_layer (undo->gimage))
{
if (lu->prev_layer)
{
gimp_image_set_active_layer (undo->gimage, lu->prev_layer);
}
else if (undo->gimage->layer_stack)
{
gimp_image_set_active_layer (undo->gimage,
undo->gimage->layer_stack->data);
}
else
{
gimp_image_set_active_layer (undo->gimage, NULL);
}
}
gimp_item_removed (GIMP_ITEM (layer));
}
else
{
/* restore layer */
undo->size -= gimp_object_get_memsize (GIMP_OBJECT (layer), NULL);
/* record the active layer */
lu->prev_layer = gimp_image_get_active_layer (undo->gimage);
/* if this is a floating selection, set the fs pointer */
if (gimp_layer_is_floating_sel (layer))
undo->gimage->floating_sel = layer;
gimp_container_insert (undo->gimage->layers,
GIMP_OBJECT (layer), lu->prev_position);
gimp_image_set_active_layer (undo->gimage, layer);
if (gimp_layer_is_floating_sel (layer))
gimp_image_floating_selection_changed (undo->gimage);
GIMP_ITEM (layer)->removed = FALSE;
if (layer->mask)
GIMP_ITEM (layer->mask)->removed = FALSE;
}
if (old_has_alpha != gimp_image_has_alpha (undo->gimage))
accum->alpha_changed = TRUE;
return TRUE;
}
static void
undo_free_layer (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/********************************/
/* Layer Mask Add/Remove Undo */
/********************************/
typedef struct _LayerMaskUndo LayerMaskUndo;
struct _LayerMaskUndo
{
GimpLayerMask *mask;
};
static gboolean undo_push_layer_mask (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpLayer *layer,
GimpLayerMask *mask);
static gboolean undo_pop_layer_mask (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_layer_mask (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_layer_mask_add (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer,
GimpLayerMask *mask)
{
return undo_push_layer_mask (gimage, undo_desc, GIMP_UNDO_LAYER_MASK_ADD,
layer, mask);
}
gboolean
gimp_image_undo_push_layer_mask_remove (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer,
GimpLayerMask *mask)
{
return undo_push_layer_mask (gimage, undo_desc, GIMP_UNDO_LAYER_MASK_REMOVE,
layer, mask);
}
static gboolean
undo_push_layer_mask (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpLayer *layer,
GimpLayerMask *mask)
{
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER_MASK (mask), FALSE);
g_return_val_if_fail (type == GIMP_UNDO_LAYER_MASK_ADD ||
type == GIMP_UNDO_LAYER_MASK_REMOVE, FALSE);
size = sizeof (LayerMaskUndo);
if (type == GIMP_UNDO_LAYER_MASK_REMOVE)
size += gimp_object_get_memsize (GIMP_OBJECT (mask), NULL);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (layer),
size, sizeof (LayerMaskUndo),
type, undo_desc,
TRUE,
undo_pop_layer_mask,
undo_free_layer_mask)))
{
LayerMaskUndo *lmu = new->data;
lmu->mask = g_object_ref (mask);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer_mask (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
LayerMaskUndo *lmu = undo->data;
GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
if ((undo_mode == GIMP_UNDO_MODE_UNDO &&
undo->undo_type == GIMP_UNDO_LAYER_MASK_ADD) ||
(undo_mode == GIMP_UNDO_MODE_REDO &&
undo->undo_type == GIMP_UNDO_LAYER_MASK_REMOVE))
{
/* remove layer mask */
undo->size += gimp_object_get_memsize (GIMP_OBJECT (lmu->mask), NULL);
gimp_layer_apply_mask (layer, GIMP_MASK_DISCARD, FALSE);
}
else
{
/* restore layer */
undo->size -= gimp_object_get_memsize (GIMP_OBJECT (lmu->mask), NULL);
gimp_layer_add_mask (layer, lmu->mask, FALSE);
GIMP_ITEM (lmu->mask)->removed = FALSE;
}
return TRUE;
}
static void
undo_free_layer_mask (GimpUndo *undo,
GimpUndoMode undo_mode)
{
LayerMaskUndo *lmu = undo->data;
g_object_unref (lmu->mask);
g_free (lmu);
}
/***************************/
/* Layer re-position Undo */
/***************************/
typedef struct _LayerRepositionUndo LayerRepositionUndo;
struct _LayerRepositionUndo
{
gint old_position;
};
static gboolean undo_pop_layer_reposition (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_layer_reposition (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_layer_reposition (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (layer),
sizeof (LayerRepositionUndo),
sizeof (LayerRepositionUndo),
GIMP_UNDO_LAYER_REPOSITION, undo_desc,
TRUE,
undo_pop_layer_reposition,
undo_free_layer_reposition)))
{
LayerRepositionUndo *lru = new->data;
lru->old_position = gimp_image_get_layer_index (gimage, layer);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer_reposition (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
LayerRepositionUndo *lru = undo->data;
GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
gint pos;
/* what's the layer's current index? */
pos = gimp_image_get_layer_index (undo->gimage, layer);
gimp_image_position_layer (undo->gimage, layer, lru->old_position,
FALSE, NULL);
lru->old_position = pos;
return TRUE;
}
static void
undo_free_layer_reposition (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/***************************/
/* Layer properties Undo */
/***************************/
typedef struct _LayerPropertiesUndo LayerPropertiesUndo;
struct _LayerPropertiesUndo
{
GimpLayerModeEffects old_mode;
gdouble old_opacity;
gboolean old_preserve_trans;
};
static gboolean undo_push_layer_properties (GimpImage *gimage,
GimpUndoType undo_type,
const gchar *undo_desc,
GimpLayer *layer);
static gboolean undo_pop_layer_properties (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_layer_properties (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_layer_mode (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer)
{
return undo_push_layer_properties (gimage, GIMP_UNDO_LAYER_MODE,
undo_desc, layer);
}
gboolean
gimp_image_undo_push_layer_opacity (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer)
{
return undo_push_layer_properties (gimage, GIMP_UNDO_LAYER_OPACITY,
undo_desc, layer);
}
gboolean
gimp_image_undo_push_layer_preserve_trans (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *layer)
{
return undo_push_layer_properties (gimage, GIMP_UNDO_LAYER_PRESERVE_TRANS,
undo_desc, layer);
}
static gboolean
undo_push_layer_properties (GimpImage *gimage,
GimpUndoType undo_type,
const gchar *undo_desc,
GimpLayer *layer)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (layer),
sizeof (LayerPropertiesUndo),
sizeof (LayerPropertiesUndo),
undo_type, undo_desc,
TRUE,
undo_pop_layer_properties,
undo_free_layer_properties)))
{
LayerPropertiesUndo *lpu = new->data;
lpu->old_mode = gimp_layer_get_mode (layer);
lpu->old_opacity = gimp_layer_get_opacity (layer);
lpu->old_preserve_trans = gimp_layer_get_preserve_trans (layer);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer_properties (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
LayerPropertiesUndo *lpu = undo->data;
GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
if (undo->undo_type == GIMP_UNDO_LAYER_MODE)
{
GimpLayerModeEffects mode;
mode = gimp_layer_get_mode (layer);
gimp_layer_set_mode (layer, lpu->old_mode, FALSE);
lpu->old_mode = mode;
}
else if (undo->undo_type == GIMP_UNDO_LAYER_OPACITY)
{
gdouble opacity;
opacity = gimp_layer_get_opacity (layer);
gimp_layer_set_opacity (layer, lpu->old_opacity, FALSE);
lpu->old_opacity = opacity;
}
else if (undo->undo_type == GIMP_UNDO_LAYER_PRESERVE_TRANS)
{
gboolean preserve_trans;
preserve_trans = gimp_layer_get_preserve_trans (layer);
gimp_layer_set_preserve_trans (layer, lpu->old_preserve_trans, FALSE);
lpu->old_preserve_trans = preserve_trans;
}
return TRUE;
}
static void
undo_free_layer_properties (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/*********************/
/* Text Layer Undo */
/*********************/
gboolean
gimp_image_undo_push_text_layer (GimpImage *gimage,
const gchar *undo_desc,
GimpTextLayer *layer,
const GParamSpec *pspec)
{
GimpUndo *undo;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (layer), FALSE);
gimp_image_dirty (gimage);
if (gimage->undo_freeze_count > 0)
return FALSE;
undo = gimp_text_undo_new (layer, pspec, undo_desc);
gimp_image_undo_push_undo (gimage, undo);
return TRUE;
}
/******************************/
/* Text Layer Modified Undo */
/******************************/
typedef struct _TextLayerModifiedUndo TextLayerModifiedUndo;
struct _TextLayerModifiedUndo
{
gboolean old_modified;
};
static gboolean undo_pop_text_layer_modified (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_text_layer_modified (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_text_layer_modified (GimpImage *gimage,
const gchar *undo_desc,
GimpTextLayer *layer)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (layer), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (layer),
sizeof (TextLayerModifiedUndo),
sizeof (TextLayerModifiedUndo),
GIMP_UNDO_TEXT_LAYER_MODIFIED, undo_desc,
TRUE,
undo_pop_text_layer_modified,
undo_free_text_layer_modified)))
{
TextLayerModifiedUndo *modified_undo = new->data;
modified_undo->old_modified = layer->modified;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_text_layer_modified (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
TextLayerModifiedUndo *modified_undo = undo->data;
GimpTextLayer *layer;
gboolean modified;
layer = GIMP_TEXT_LAYER (GIMP_ITEM_UNDO (undo)->item);
#if 0
g_print ("setting layer->modified from %s to %s\n",
layer->modified ? "TRUE" : "FALSE",
modified_undo->old_modified ? "TRUE" : "FALSE");
#endif
modified = layer->modified;
g_object_set (layer, "modified", modified_undo->old_modified, NULL);
modified_undo->old_modified = modified;
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer));
return TRUE;
}
static void
undo_free_text_layer_modified (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/*****************************/
/* Add/Remove Channel Undo */
/*****************************/
typedef struct _ChannelUndo ChannelUndo;
struct _ChannelUndo
{
gint prev_position; /* former position in list */
GimpChannel *prev_channel; /* previous active channel */
};
static gboolean undo_push_channel (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel);
static gboolean undo_pop_channel (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_channel (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_channel_add (GimpImage *gimage,
const gchar *undo_desc,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel)
{
return undo_push_channel (gimage, undo_desc, GIMP_UNDO_CHANNEL_ADD,
channel, prev_position, prev_channel);
}
gboolean
gimp_image_undo_push_channel_remove (GimpImage *gimage,
const gchar *undo_desc,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel)
{
return undo_push_channel (gimage, undo_desc, GIMP_UNDO_CHANNEL_REMOVE,
channel, prev_position, prev_channel);
}
static gboolean
undo_push_channel (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel)
{
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
g_return_val_if_fail (prev_channel == NULL || GIMP_IS_CHANNEL (prev_channel),
FALSE);
g_return_val_if_fail (type == GIMP_UNDO_CHANNEL_ADD ||
type == GIMP_UNDO_CHANNEL_REMOVE, FALSE);
size = sizeof (ChannelUndo);
if (type == GIMP_UNDO_CHANNEL_REMOVE)
size += gimp_object_get_memsize (GIMP_OBJECT (channel), NULL);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (channel),
size, sizeof (ChannelUndo),
type, undo_desc,
TRUE,
undo_pop_channel,
undo_free_channel)))
{
ChannelUndo *cu = new->data;
cu->prev_position = prev_position;
cu->prev_channel = prev_channel;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_channel (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ChannelUndo *cu = undo->data;
GimpChannel *channel = GIMP_CHANNEL (GIMP_ITEM_UNDO (undo)->item);
if ((undo_mode == GIMP_UNDO_MODE_UNDO &&
undo->undo_type == GIMP_UNDO_CHANNEL_ADD) ||
(undo_mode == GIMP_UNDO_MODE_REDO &&
undo->undo_type == GIMP_UNDO_CHANNEL_REMOVE))
{
/* remove channel */
undo->size += gimp_object_get_memsize (GIMP_OBJECT (channel), NULL);
/* record the current position */
cu->prev_position = gimp_image_get_channel_index (undo->gimage,
channel);
gimp_container_remove (undo->gimage->channels, GIMP_OBJECT (channel));
gimp_item_removed (GIMP_ITEM (channel));
if (channel == gimp_image_get_active_channel (undo->gimage))
{
if (cu->prev_channel)
gimp_image_set_active_channel (undo->gimage, cu->prev_channel);
else
gimp_image_unset_active_channel (undo->gimage);
}
}
else
{
/* restore channel */
undo->size -= gimp_object_get_memsize (GIMP_OBJECT (channel), NULL);
/* record the active channel */
cu->prev_channel = gimp_image_get_active_channel (undo->gimage);
gimp_container_insert (undo->gimage->channels,
GIMP_OBJECT (channel), cu->prev_position);
gimp_image_set_active_channel (undo->gimage, channel);
GIMP_ITEM (channel)->removed = FALSE;
}
return TRUE;
}
static void
undo_free_channel (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/******************************/
/* Channel re-position Undo */
/******************************/
typedef struct _ChannelRepositionUndo ChannelRepositionUndo;
struct _ChannelRepositionUndo
{
gint old_position;
};
static gboolean undo_pop_channel_reposition (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_channel_reposition (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_channel_reposition (GimpImage *gimage,
const gchar *undo_desc,
GimpChannel *channel)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (channel),
sizeof (ChannelRepositionUndo),
sizeof (ChannelRepositionUndo),
GIMP_UNDO_CHANNEL_REPOSITION, undo_desc,
TRUE,
undo_pop_channel_reposition,
undo_free_channel_reposition)))
{
ChannelRepositionUndo *cru = new->data;
cru->old_position = gimp_image_get_channel_index (gimage, channel);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_channel_reposition (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ChannelRepositionUndo *cru = undo->data;
GimpChannel *channel = GIMP_CHANNEL (GIMP_ITEM_UNDO (undo)->item);
gint pos;
pos = gimp_image_get_channel_index (undo->gimage, channel);
gimp_image_position_channel (undo->gimage, channel, cru->old_position,
FALSE, NULL);
cru->old_position = pos;
return TRUE;
}
static void
undo_free_channel_reposition (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/************************/
/* Channel color Undo */
/************************/
typedef struct _ChannelColorUndo ChannelColorUndo;
struct _ChannelColorUndo
{
GimpRGB old_color;
};
static gboolean undo_pop_channel_color (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_channel_color (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_channel_color (GimpImage *gimage,
const gchar *undo_desc,
GimpChannel *channel)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (channel),
sizeof (ChannelColorUndo),
sizeof (ChannelColorUndo),
GIMP_UNDO_CHANNEL_COLOR, undo_desc,
TRUE,
undo_pop_channel_color,
undo_free_channel_color)))
{
ChannelColorUndo *ccu = new->data;
gimp_channel_get_color (channel , &ccu->old_color);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_channel_color (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ChannelColorUndo *ccu = undo->data;
GimpChannel *channel = GIMP_CHANNEL (GIMP_ITEM_UNDO (undo)->item);
GimpRGB color;
gimp_channel_get_color (channel, &color);
gimp_channel_set_color (channel, &ccu->old_color, FALSE);
ccu->old_color = color;
return TRUE;
}
static void
undo_free_channel_color (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/*****************************/
/* Add/Remove Vectors Undo */
/*****************************/
typedef struct _VectorsUndo VectorsUndo;
struct _VectorsUndo
{
gint prev_position; /* former position in list */
GimpVectors *prev_vectors; /* previous active vectors */
};
static gboolean undo_push_vectors (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors);
static gboolean undo_pop_vectors (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_vectors (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_vectors_add (GimpImage *gimage,
const gchar *undo_desc,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors)
{
return undo_push_vectors (gimage, undo_desc, GIMP_UNDO_VECTORS_ADD,
vectors, prev_position, prev_vectors);
}
gboolean
gimp_image_undo_push_vectors_remove (GimpImage *gimage,
const gchar *undo_desc,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors)
{
return undo_push_vectors (gimage, undo_desc, GIMP_UNDO_VECTORS_REMOVE,
vectors, prev_position, prev_vectors);
}
static gboolean
undo_push_vectors (GimpImage *gimage,
const gchar *undo_desc,
GimpUndoType type,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors)
{
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (prev_vectors == NULL || GIMP_IS_VECTORS (prev_vectors),
FALSE);
g_return_val_if_fail (type == GIMP_UNDO_VECTORS_ADD ||
type == GIMP_UNDO_VECTORS_REMOVE, FALSE);
size = sizeof (VectorsUndo);
if (type == GIMP_UNDO_VECTORS_REMOVE)
size += gimp_object_get_memsize (GIMP_OBJECT (vectors), NULL);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (vectors),
size, sizeof (VectorsUndo),
type, undo_desc,
TRUE,
undo_pop_vectors,
undo_free_vectors)))
{
VectorsUndo *vu = new->data;
vu->prev_position = prev_position;
vu->prev_vectors = prev_vectors;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_vectors (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
VectorsUndo *vu = undo->data;
GimpVectors *vectors = GIMP_VECTORS (GIMP_ITEM_UNDO (undo)->item);
if ((undo_mode == GIMP_UNDO_MODE_UNDO &&
undo->undo_type == GIMP_UNDO_VECTORS_ADD) ||
(undo_mode == GIMP_UNDO_MODE_REDO &&
undo->undo_type == GIMP_UNDO_VECTORS_REMOVE))
{
/* remove vectors */
undo->size += gimp_object_get_memsize (GIMP_OBJECT (vectors), NULL);
/* record the current position */
vu->prev_position = gimp_image_get_vectors_index (undo->gimage,
vectors);
gimp_container_remove (undo->gimage->vectors, GIMP_OBJECT (vectors));
gimp_item_removed (GIMP_ITEM (vectors));
if (vectors == gimp_image_get_active_vectors (undo->gimage))
gimp_image_set_active_vectors (undo->gimage, vu->prev_vectors);
}
else
{
/* restore vectors */
undo->size -= gimp_object_get_memsize (GIMP_OBJECT (vectors), NULL);
/* record the active vectors */
vu->prev_vectors = gimp_image_get_active_vectors (undo->gimage);
gimp_container_insert (undo->gimage->vectors,
GIMP_OBJECT (vectors), vu->prev_position);
gimp_image_set_active_vectors (undo->gimage, vectors);
GIMP_ITEM (vectors)->removed = FALSE;
}
return TRUE;
}
static void
undo_free_vectors (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/**********************/
/* Vectors Mod Undo */
/**********************/
typedef struct _VectorsModUndo VectorsModUndo;
struct _VectorsModUndo
{
GimpVectors *vectors;
};
static gboolean undo_pop_vectors_mod (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_vectors_mod (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_vectors_mod (GimpImage *gimage,
const gchar *undo_desc,
GimpVectors *vectors)
{
GimpVectors *copy;
GimpUndo *new;
gint64 size;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
copy = GIMP_VECTORS (gimp_item_duplicate (GIMP_ITEM (vectors),
G_TYPE_FROM_INSTANCE (vectors),
FALSE));
size = (sizeof (VectorsModUndo) +
gimp_object_get_memsize (GIMP_OBJECT (copy), NULL));
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (vectors),
size, sizeof (VectorsModUndo),
GIMP_UNDO_VECTORS_MOD, undo_desc,
TRUE,
undo_pop_vectors_mod,
undo_free_vectors_mod)))
{
VectorsModUndo *vmu = new->data;
vmu->vectors = copy;
return TRUE;
}
if (copy)
g_object_unref (copy);
return FALSE;
}
static gboolean
undo_pop_vectors_mod (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
VectorsModUndo *vmu = undo->data;
GimpVectors *vectors = GIMP_VECTORS (GIMP_ITEM_UNDO (undo)->item);
GimpVectors *temp;
undo->size -= gimp_object_get_memsize (GIMP_OBJECT (vmu->vectors), NULL);
temp = vmu->vectors;
vmu->vectors =
GIMP_VECTORS (gimp_item_duplicate (GIMP_ITEM (vectors),
G_TYPE_FROM_INSTANCE (vectors),
FALSE));
gimp_vectors_freeze (vectors);
gimp_vectors_copy_strokes (temp, vectors);
GIMP_ITEM (vectors)->width = GIMP_ITEM (temp)->width;
GIMP_ITEM (vectors)->height = GIMP_ITEM (temp)->height;
GIMP_ITEM (vectors)->offset_x = GIMP_ITEM (temp)->offset_x;
GIMP_ITEM (vectors)->offset_y = GIMP_ITEM (temp)->offset_y;
g_object_unref (temp);
gimp_vectors_thaw (vectors);
undo->size += gimp_object_get_memsize (GIMP_OBJECT (vmu->vectors), NULL);
return TRUE;
}
static void
undo_free_vectors_mod (GimpUndo *undo,
GimpUndoMode undo_mode)
{
VectorsModUndo *vmu = undo->data;
g_object_unref (vmu->vectors);
g_free (vmu);
}
/******************************/
/* Vectors re-position Undo */
/******************************/
typedef struct _VectorsRepositionUndo VectorsRepositionUndo;
struct _VectorsRepositionUndo
{
gint old_position;
};
static gboolean undo_pop_vectors_reposition (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_vectors_reposition (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_vectors_reposition (GimpImage *gimage,
const gchar *undo_desc,
GimpVectors *vectors)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (vectors),
sizeof (VectorsRepositionUndo),
sizeof (VectorsRepositionUndo),
GIMP_UNDO_VECTORS_REPOSITION, undo_desc,
TRUE,
undo_pop_vectors_reposition,
undo_free_vectors_reposition)))
{
VectorsRepositionUndo *vru = new->data;
vru->old_position = gimp_image_get_vectors_index (gimage, vectors);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_vectors_reposition (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
VectorsRepositionUndo *vru = undo->data;
GimpVectors *vectors = GIMP_VECTORS (GIMP_ITEM_UNDO (undo)->item);
gint pos;
/* what's the vectors's current index? */
pos = gimp_image_get_vectors_index (undo->gimage, vectors);
gimp_image_position_vectors (undo->gimage, vectors, vru->old_position,
FALSE, NULL);
vru->old_position = pos;
return TRUE;
}
static void
undo_free_vectors_reposition (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_free (undo->data);
}
/**************************************/
/* Floating Selection to Layer Undo */
/**************************************/
typedef struct _FStoLayerUndo FStoLayerUndo;
struct _FStoLayerUndo
{
GimpLayer *floating_layer; /* the floating layer */
GimpDrawable *drawable; /* drawable of floating sel */
};
static gboolean undo_pop_fs_to_layer (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_fs_to_layer (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_fs_to_layer (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *floating_layer,
GimpDrawable *drawable)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (floating_layer), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (FStoLayerUndo),
sizeof (FStoLayerUndo),
GIMP_UNDO_FS_TO_LAYER, undo_desc,
TRUE,
undo_pop_fs_to_layer,
undo_free_fs_to_layer)))
{
FStoLayerUndo *fsu = new->data;
fsu->floating_layer = floating_layer;
fsu->drawable = drawable;
return TRUE;
}
tile_manager_unref (floating_layer->fs.backing_store);
floating_layer->fs.backing_store = NULL;
return FALSE;
}
static gboolean
undo_pop_fs_to_layer (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
FStoLayerUndo *fsu = undo->data;
switch (undo_mode)
{
case GIMP_UNDO_MODE_UNDO:
/* Update the preview for the floating sel */
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (fsu->floating_layer));
fsu->floating_layer->fs.drawable = fsu->drawable;
gimp_image_set_active_layer (undo->gimage, fsu->floating_layer);
undo->gimage->floating_sel = fsu->floating_layer;
/* restore the contents of the drawable */
floating_sel_store (fsu->floating_layer,
GIMP_ITEM (fsu->floating_layer)->offset_x,
GIMP_ITEM (fsu->floating_layer)->offset_y,
GIMP_ITEM (fsu->floating_layer)->width,
GIMP_ITEM (fsu->floating_layer)->height);
fsu->floating_layer->fs.initial = TRUE;
/* clear the selection */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (fsu->floating_layer));
/* Update the preview for the gimage and underlying drawable */
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (fsu->floating_layer));
break;
case GIMP_UNDO_MODE_REDO:
/* restore the contents of the drawable */
floating_sel_restore (fsu->floating_layer,
GIMP_ITEM (fsu->floating_layer)->offset_x,
GIMP_ITEM (fsu->floating_layer)->offset_y,
GIMP_ITEM (fsu->floating_layer)->width,
GIMP_ITEM (fsu->floating_layer)->height);
/* Update the preview for the gimage and underlying drawable */
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (fsu->floating_layer));
/* clear the selection */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (fsu->floating_layer));
/* update the pointers */
fsu->floating_layer->fs.drawable = NULL;
undo->gimage->floating_sel = NULL;
/* Update the fs drawable */
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (fsu->floating_layer));
break;
}
gimp_image_floating_selection_changed (undo->gimage);
return TRUE;
}
static void
undo_free_fs_to_layer (GimpUndo *undo,
GimpUndoMode undo_mode)
{
FStoLayerUndo *fsu = undo->data;
if (undo_mode == GIMP_UNDO_MODE_UNDO)
{
tile_manager_unref (fsu->floating_layer->fs.backing_store);
fsu->floating_layer->fs.backing_store = NULL;
}
g_free (fsu);
}
/***********************************/
/* Floating Selection Rigor Undo */
/***********************************/
static gboolean undo_pop_fs_rigor (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
gboolean
gimp_image_undo_push_fs_rigor (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *floating_layer)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (floating_layer), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (floating_layer),
0, 0,
GIMP_UNDO_FS_RIGOR, undo_desc,
FALSE,
undo_pop_fs_rigor,
NULL)))
{
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_fs_rigor (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpLayer *floating_layer;
floating_layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
if (! gimp_layer_is_floating_sel (floating_layer))
return FALSE;
switch (undo_mode)
{
case GIMP_UNDO_MODE_UNDO:
floating_sel_relax (floating_layer, FALSE);
break;
case GIMP_UNDO_MODE_REDO:
floating_sel_rigor (floating_layer, FALSE);
break;
}
return TRUE;
}
/***********************************/
/* Floating Selection Relax Undo */
/***********************************/
static gboolean undo_pop_fs_relax (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
gboolean
gimp_image_undo_push_fs_relax (GimpImage *gimage,
const gchar *undo_desc,
GimpLayer *floating_layer)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (floating_layer), FALSE);
if ((new = gimp_image_undo_push_item (gimage, GIMP_ITEM (floating_layer),
0, 0,
GIMP_UNDO_FS_RELAX, undo_desc,
FALSE,
undo_pop_fs_relax,
NULL)))
{
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_fs_relax (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpLayer *floating_layer;
floating_layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
if (! gimp_layer_is_floating_sel (floating_layer))
return FALSE;
switch (undo_mode)
{
case GIMP_UNDO_MODE_UNDO:
floating_sel_rigor (floating_layer, FALSE);
break;
case GIMP_UNDO_MODE_REDO:
floating_sel_relax (floating_layer, FALSE);
break;
}
return TRUE;
}
/*******************/
/* Parasite Undo */
/*******************/
typedef struct _ParasiteUndo ParasiteUndo;
struct _ParasiteUndo
{
GimpImage *gimage;
GimpItem *item;
GimpParasite *parasite;
gchar *name;
};
static gboolean undo_pop_parasite (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_parasite (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_image_undo_push_image_parasite (GimpImage *gimage,
const gchar *undo_desc,
gpointer parasite)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ParasiteUndo),
sizeof (ParasiteUndo),
GIMP_UNDO_PARASITE_ATTACH, undo_desc,
TRUE,
undo_pop_parasite,
undo_free_parasite)))
{
ParasiteUndo *pu = new->data;
pu->gimage = gimage;
pu->item = NULL;
pu->name = g_strdup (gimp_parasite_name (parasite));
pu->parasite = gimp_parasite_copy (gimp_image_parasite_find (gimage,
pu->name));
return TRUE;
}
return FALSE;
}
gboolean
gimp_image_undo_push_image_parasite_remove (GimpImage *gimage,
const gchar *undo_desc,
const gchar *name)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ParasiteUndo),
sizeof (ParasiteUndo),
GIMP_UNDO_PARASITE_REMOVE, undo_desc,
TRUE,
undo_pop_parasite,
undo_free_parasite)))
{
ParasiteUndo *pu = new->data;
pu->gimage = gimage;
pu->item = NULL;
pu->name = g_strdup (name);
pu->parasite = gimp_parasite_copy (gimp_image_parasite_find (gimage,
pu->name));
return TRUE;
}
return FALSE;
}
gboolean
gimp_image_undo_push_item_parasite (GimpImage *gimage,
const gchar *undo_desc,
GimpItem *item,
gpointer parasite)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ParasiteUndo),
sizeof (ParasiteUndo),
GIMP_UNDO_PARASITE_ATTACH, undo_desc,
TRUE,
undo_pop_parasite,
undo_free_parasite)))
{
ParasiteUndo *pu = new->data;
pu->gimage = NULL;
pu->item = item;
pu->name = g_strdup (gimp_parasite_name (parasite));
pu->parasite = gimp_parasite_copy (gimp_item_parasite_find (item,
pu->name));
return TRUE;
}
return FALSE;
}
gboolean
gimp_image_undo_push_item_parasite_remove (GimpImage *gimage,
const gchar *undo_desc,
GimpItem *item,
const gchar *name)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if ((new = gimp_image_undo_push (gimage,
sizeof (ParasiteUndo),
sizeof (ParasiteUndo),
GIMP_UNDO_PARASITE_REMOVE, undo_desc,
TRUE,
undo_pop_parasite,
undo_free_parasite)))
{
ParasiteUndo *pu = new->data;
pu->gimage = NULL;
pu->item = item;
pu->name = g_strdup (name);
pu->parasite = gimp_parasite_copy (gimp_item_parasite_find (item,
pu->name));
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_parasite (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
ParasiteUndo *pu = undo->data;
GimpParasite *tmp;
tmp = pu->parasite;
if (pu->gimage)
{
pu->parasite = gimp_parasite_copy (gimp_image_parasite_find (undo->gimage,
pu->name));
if (tmp)
gimp_parasite_list_add (pu->gimage->parasites, tmp);
else
gimp_parasite_list_remove (pu->gimage->parasites, pu->name);
}
else if (pu->item)
{
pu->parasite = gimp_parasite_copy (gimp_item_parasite_find (pu->item,
pu->name));
if (tmp)
gimp_parasite_list_add (pu->item->parasites, tmp);
else
gimp_parasite_list_remove (pu->item->parasites, pu->name);
}
else
{
pu->parasite = gimp_parasite_copy (gimp_parasite_find (undo->gimage->gimp,
pu->name));
if (tmp)
gimp_parasite_attach (undo->gimage->gimp, tmp);
else
gimp_parasite_detach (undo->gimage->gimp, pu->name);
}
if (tmp)
gimp_parasite_free (tmp);
return TRUE;
}
static void
undo_free_parasite (GimpUndo *undo,
GimpUndoMode undo_mode)
{
ParasiteUndo *pu = undo->data;
if (pu->parasite)
gimp_parasite_free (pu->parasite);
if (pu->name)
g_free (pu->name);
g_free (pu);
}
/******************************************************************************/
/* Something for which programmer is too lazy to write an undo function for */
/******************************************************************************/
static gboolean undo_pop_cantundo (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
gboolean
gimp_image_undo_push_cantundo (GimpImage *gimage,
const gchar *undo_desc)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
/* This is the sole purpose of this type of undo: the ability to
* mark an image as having been mutated, without really providing
* any adequate undo facility.
*/
if ((new = gimp_image_undo_push (gimage,
0, 0,
GIMP_UNDO_CANT, undo_desc,
TRUE,
undo_pop_cantundo,
NULL)))
{
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_cantundo (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
switch (undo_mode)
{
case GIMP_UNDO_MODE_UNDO:
g_message (_("Can't undo %s"), GIMP_OBJECT (undo)->name);
break;
case GIMP_UNDO_MODE_REDO:
break;
}
return TRUE;
}
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