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gimp/app/undo.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 <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "tools/tools-types.h"
#include "base/pixel-region.h"
#include "base/tile-manager.h"
#include "base/tile.h"
#include "paint-funcs/paint-funcs.h"
#include "core/gimp.h"
#include "core/gimp-parasites.h"
#include "core/gimpchannel.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpcoreconfig.h"
#include "core/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-mask.h"
#include "core/gimpimage-projection.h"
#include "core/gimplayer.h"
#include "core/gimplayer-floating-sel.h"
#include "core/gimplayermask.h"
#include "core/gimplist.h"
#include "core/gimpparasitelist.h"
#include "paint/gimppaintcore.h"
#include "tools/gimpbycolorselecttool.h"
#include "tools/gimppainttool.h"
#include "tools/gimptransformtool.h"
#include "tools/tool_manager.h"
#include "path_transform.h"
#include "undo.h"
#include "undo_types.h"
#include "libgimp/gimpintl.h"
/*#define DEBUG*/
#ifdef DEBUG
#define TRC(x) printf x
#else
#define TRC(x)
#endif
typedef enum
{
UNDO = 0,
REDO = 1
} UndoState;
typedef gboolean (* UndoPopFunc) (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data);
typedef void (* UndoFreeFunc) (UndoState state,
UndoType type,
gpointer data);
typedef struct _Undo Undo;
struct _Undo
{
UndoType type; /* undo type */
gpointer data; /* data to implement the undo, NULL for group */
gsize bytes; /* size of undo item */
gboolean dirties_image; /* TRUE if undo mutates image */
gboolean group_boundary; /* TRUE if this is the start/end of a group */
UndoPopFunc pop_func; /* function pointer to undo pop proc */
UndoFreeFunc free_func; /* function with specifics for freeing */
};
static const gchar * undo_type_to_name (UndoType undo_type);
static Undo * undo_new (UndoType undo_type,
gsize size,
gboolean dirties_image);
static gboolean mode_changed = FALSE;
static gboolean size_changed = FALSE;
static gboolean resolution_changed = FALSE;
static gboolean unit_changed = FALSE;
static gboolean mask_changed = FALSE;
static gboolean qmask_changed = FALSE;
static gboolean alpha_changed = FALSE;
static void
undo_free_list (GimpImage *gimage,
UndoState state,
GSList *list)
{
GSList *orig;
Undo *undo;
orig = list;
while (list)
{
undo = (Undo *) list->data;
if (undo)
{
if (undo->free_func)
(*undo->free_func) (state, undo->type, undo->data);
gimage->undo_bytes -= undo->bytes;
g_free (undo);
}
list = g_slist_next (list);
}
g_slist_free (orig);
}
static GSList *
remove_stack_bottom (GimpImage *gimage)
{
GSList *list;
GSList *last;
Undo *object;
gboolean in_group = FALSE;
list = gimage->undo_stack;
last = NULL;
while (list)
{
if (list->next == NULL)
{
if (last)
undo_free_list (gimage, UNDO, last->next);
else
undo_free_list (gimage, UNDO, list);
gimage->undo_levels --;
if (last)
last->next = NULL;
list = NULL;
gimp_image_undo_event (gimage, UNDO_EXPIRED);
}
else
{
object = (Undo *) list->data;
if (object->group_boundary)
in_group = (in_group) ? FALSE : TRUE;
/* Make sure last points to only a single item, or the
* tail of an aggregate undo item
*/
if (!in_group)
last = list;
list = g_slist_next (list);
}
}
if (last)
return gimage->undo_stack;
else
return NULL;
}
/* Allocate and initialise a new Undo. Leaves data and function
* pointers zeroed ready to be filled in by caller.
*/
static Undo *
undo_new (UndoType type,
gsize size,
gboolean dirties_image)
{
Undo *new;
new = g_new0 (Undo, 1);
new->type = type;
new->bytes = size;
new->dirties_image = dirties_image;
return new;
}
static gboolean
undo_free_up_space (GimpImage *gimage)
{
/* If there are 0 levels of undo return FALSE. */
if (gimage->gimp->config->levels_of_undo == 0)
return FALSE;
/* Delete the item on the bottom of the stack if we have the maximum
* levels of undo already
*/
while (gimage->undo_levels >= gimage->gimp->config->levels_of_undo)
gimage->undo_stack = remove_stack_bottom (gimage);
return TRUE;
}
static Undo *
undo_push (GimpImage *gimage,
gsize size,
UndoType type,
gboolean dirties_image)
{
Undo *new;
g_return_val_if_fail (type > LAST_UNDO_GROUP, NULL);
/* Does this undo dirty the image? If so, we always want to mark
* image dirty, even if we can't actually push the undo.
*/
if (dirties_image)
gimp_image_dirty (gimage);
if (! gimage->undo_on)
return NULL;
size += sizeof (Undo);
if (gimage->redo_stack)
{
undo_free_list (gimage, REDO, gimage->redo_stack);
gimage->redo_stack = NULL;
/* If the image was dirty, but could become clean by redo-ing
* some actions, then it should now become 'infinitely' dirty.
* This is because we've just nuked the actions that would allow
* the image to become clean again. The only hope for salvation
* is to save the image now! -- austin */
if (gimage->dirty < 0)
gimage->dirty = 10000;
}
if (gimage->pushing_undo_group == NO_UNDO_GROUP)
if (! undo_free_up_space (gimage))
return NULL;
new = undo_new (type, size, dirties_image);
gimage->undo_bytes += size;
/* only increment levels if not in a group */
if (gimage->pushing_undo_group == NO_UNDO_GROUP)
gimage->undo_levels ++;
gimage->undo_stack = g_slist_prepend (gimage->undo_stack, (gpointer) new);
TRC (("undo_push: %s\n", undo_type_to_name (type)));
/* lastly, tell people about the newly pushed undo (must come after
* modification of undo_stack). */
if (gimage->pushing_undo_group == NO_UNDO_GROUP)
gimp_image_undo_event (gimage, UNDO_PUSHED);
return new;
}
static gboolean
pop_stack (GimpImage *gimage,
GSList **stack_ptr,
GSList **unstack_ptr,
UndoState state)
{
Undo *object;
GSList *stack;
GSList *tmp;
gboolean status = FALSE;
gboolean in_group = FALSE;
/* Keep popping until we pop a valid object
* or get to the end of a group if we're in one
*/
while (*stack_ptr)
{
stack = *stack_ptr;
object = (Undo *) stack->data;
if (object->group_boundary)
{
in_group = ! in_group;
if (in_group)
gimage->undo_levels += (state == UNDO) ? -1 : 1;
if (status && ! in_group)
status = TRUE;
else
status = FALSE;
}
else
{
TRC (("undo_pop: %s\n", undo_type_to_name (object->type)));
status = (* object->pop_func) (gimage,
state,
object->type,
object->data);
if (object->dirties_image)
{
switch (state)
{
case UNDO:
gimp_image_clean (gimage);
break;
case REDO:
gimp_image_dirty (gimage);
break;
}
}
if (! in_group)
gimage->undo_levels += (state == UNDO) ? -1 : 1;
}
*unstack_ptr = g_slist_prepend (*unstack_ptr, object);
tmp = stack;
*stack_ptr = g_slist_next (*stack_ptr);
tmp->next = NULL;
g_slist_free (tmp);
if (status && ! in_group)
{
/* If the mode_changed flag was set */
if (mode_changed)
{
gimp_image_mode_changed (gimage);
mode_changed = FALSE;
}
/* If the size_changed flag was set */
if (size_changed)
{
gimp_viewable_size_changed (GIMP_VIEWABLE (gimage));
size_changed = FALSE;
}
/* If the resolution_changed flag was set */
if (resolution_changed)
{
gimp_image_resolution_changed (gimage);
resolution_changed = FALSE;
}
/* If the unit_changed flag was set */
if (unit_changed)
{
gimp_image_unit_changed (gimage);
unit_changed = FALSE;
}
/* If the mask_changed flag was set */
if (mask_changed)
{
gimp_image_mask_changed (gimage);
mask_changed = FALSE;
}
/* If the qmask_changed flag was set */
if (qmask_changed)
{
gimp_image_qmask_changed (gimage);
qmask_changed = FALSE;
}
/* If the alpha_changed flag was set */
if (alpha_changed)
{
gimp_image_alpha_changed (gimage);
alpha_changed = FALSE;
}
/* let others know that we just popped an action */
gimp_image_undo_event (gimage,
(state == UNDO)? UNDO_POPPED : UNDO_REDO);
return TRUE;
}
}
return FALSE;
}
gboolean
undo_pop (GimpImage *gimage)
{
/* Very bad idea to pop an action off the undo stack if we're in the
* middle of a group, since the whole group won't be popped. Might
* leave unbalanced group start marker earlier in the stack too,
* causing much confusion when it's later reached and
* mis-interpreted as a group start.
*/
g_return_val_if_fail (gimage->pushing_undo_group == NO_UNDO_GROUP, FALSE);
return pop_stack (gimage, &gimage->undo_stack, &gimage->redo_stack, UNDO);
}
gboolean
undo_redo (GimpImage *gimage)
{
/* ditto for redo stack */
g_return_val_if_fail (gimage->pushing_undo_group == NO_UNDO_GROUP, FALSE);
return pop_stack (gimage, &gimage->redo_stack, &gimage->undo_stack, REDO);
}
/* Return the name of the action that would be used if undo_pop or
* undo_redo is called, or NULL if there are no actions pushed on the
* stack.
*/
static const gchar *
undo_get_topitem_name (GSList *stack)
{
Undo *object;
if (!stack)
return NULL;
object = stack->data;
/* For group boundaries, the type of the boundary marker is the
* type of the whole group (but each individual action in the
* group retains its own type so layer/channel unrefs work
* correctly).
*/
return undo_type_to_name (object->type);
}
/* Return the type of the top undo action */
static UndoType
undo_get_topitem_type (GSList *stack)
{
Undo *object;
if (!stack)
return NO_UNDO_GROUP;
object = stack->data;
/* For group boundaries, the type of the boundary marker is the
* type of the whole group (but each individual action in the
* group retains its own type so layer/channel unrefs work
* correctly).
*/
return object->type;
}
const gchar *
undo_get_undo_name (GimpImage *gimage)
{
g_return_val_if_fail (gimage != NULL, NULL);
/* don't want to encourage undo while a group is open */
if (gimage->pushing_undo_group != NO_UNDO_GROUP)
return NULL;
return undo_get_topitem_name (gimage->undo_stack);
}
UndoType
undo_get_undo_top_type (GimpImage *gimage)
{
g_return_val_if_fail (gimage != NULL, NO_UNDO_GROUP);
/* don't want to encourage undo while a group is open */
if (gimage->pushing_undo_group != NO_UNDO_GROUP)
return NO_UNDO_GROUP;
return undo_get_topitem_type (gimage->undo_stack);
}
const gchar *
undo_get_redo_name (GimpImage *gimage)
{
g_return_val_if_fail (gimage != NULL, NULL);
/* don't want to encourage redo while a group is open */
if (gimage->pushing_undo_group != NO_UNDO_GROUP)
return NULL;
return undo_get_topitem_name (gimage->redo_stack);
}
static void
undo_map_over_stack (GSList *stack,
undo_map_fn fn,
gpointer data)
{
gboolean in_group = FALSE;
gint count = 0;
Undo *object;
while (stack)
{
object = (Undo *) stack->data;
if (object->group_boundary)
in_group = !in_group;
/* Keep track of group length. 0 means not in group (or group
* end marker), 1 is group start marker, >= 2 are group
* members.
*/
if (in_group)
count++;
else
count = 0;
/* Is this a group end marker or non-grouped action? */
if (count == 0)
{
if (fn (undo_type_to_name (object->type), data))
return; /* early termination option exercised */
}
stack = g_slist_next (stack);
}
}
void
undo_map_over_undo_stack (GimpImage *gimage,
undo_map_fn fn,
gpointer data)
{
/* shouldn't have group open */
g_return_if_fail (gimage->pushing_undo_group == NO_UNDO_GROUP);
undo_map_over_stack (gimage->undo_stack, fn, data);
}
void
undo_map_over_redo_stack (GimpImage *gimage,
undo_map_fn fn,
gpointer data)
{
/* shouldn't have group open */
g_return_if_fail (gimage->pushing_undo_group == NO_UNDO_GROUP);
undo_map_over_stack (gimage->redo_stack, fn, data);
}
void
undo_free (GimpImage *gimage)
{
undo_free_list (gimage, UNDO, gimage->undo_stack);
undo_free_list (gimage, REDO, gimage->redo_stack);
gimage->undo_stack = NULL;
gimage->redo_stack = NULL;
gimage->undo_bytes = 0;
gimage->undo_levels = 0;
/* If the image was dirty, but could become clean by redo-ing
* some actions, then it should now become 'infinitely' dirty.
* This is because we've just nuked the actions that would allow
* the image to become clean again. The only hope for salvation
* is to save the image now! -- austin
*/
if (gimage->dirty < 0)
gimage->dirty = 10000;
/* The same applies to the case where the image would become clean
* due to undo actions, but since user can't undo without an undo
* stack, that's not so much a problem.
*/
gimp_image_undo_event (gimage, UNDO_FREE);
}
/**********************/
/* group Undo funcs */
gboolean
undo_push_group_start (GimpImage *gimage,
UndoType type)
{
Undo *boundary_marker;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
/* Bad idea to push NO_UNDO_GROUP as the group type, since that
* won't be recognized as the start of the group later.
*/
g_return_val_if_fail (type > FIRST_UNDO_GROUP &&
type <= LAST_UNDO_GROUP, FALSE);
if (! gimage->undo_on)
return FALSE;
gimage->group_count ++;
TRC (("group_start (%s)\n", undo_type_to_name (type)));
/* If we're already in a group...ignore */
if (gimage->group_count > 1)
return TRUE;
if (gimage->redo_stack)
{
undo_free_list (gimage, REDO, gimage->redo_stack);
gimage->redo_stack = NULL;
/* If the image was dirty, but could become clean by redo-ing
* some actions, then it should now become 'infinitely' dirty.
* This is because we've just nuked the actions that would allow
* the image to become clean again. The only hope for salvation
* is to save the image now! -- austin
*/
if (gimage->dirty < 0)
gimage->dirty = 10000;
}
if (! undo_free_up_space (gimage))
return FALSE;
boundary_marker = undo_new (type, sizeof (Undo), FALSE);
gimage->undo_bytes += boundary_marker->bytes;
boundary_marker->group_boundary = TRUE;
gimage->pushing_undo_group = type;
gimage->undo_stack = g_slist_prepend (gimage->undo_stack, boundary_marker);
gimage->undo_levels++;
return TRUE;
}
gboolean
undo_push_group_end (GimpImage *gimage)
{
Undo *boundary_marker;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if (! gimage->undo_on)
return FALSE;
gimage->group_count --;
TRC (("group end\n"));
if (gimage->group_count == 0)
{
boundary_marker = undo_new (gimage->pushing_undo_group,
sizeof (Undo), FALSE);
boundary_marker->group_boundary = TRUE;
gimage->undo_stack = g_slist_prepend (gimage->undo_stack,
boundary_marker);
gimage->undo_bytes += boundary_marker->bytes;
gimage->pushing_undo_group = NO_UNDO_GROUP;
/* Do it here, since undo_push doesn't emit this event while in the
* middle of a group */
gimp_image_undo_event (gimage, UNDO_PUSHED);
}
return TRUE;
}
/****************/
/* Image Undo */
typedef struct _ImageUndo ImageUndo;
struct _ImageUndo
{
TileManager *tiles;
GimpDrawable *drawable;
gint x1, y1, x2, y2;
gboolean sparse;
};
static gboolean undo_pop_image (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_image (UndoState, UndoType, gpointer);
gboolean
undo_push_image (GimpImage *gimage,
GimpDrawable *drawable,
gint x1,
gint y1,
gint x2,
gint y2)
{
Undo *new;
gsize size;
x1 = CLAMP (x1, 0, gimp_drawable_width (drawable));
y1 = CLAMP (y1, 0, gimp_drawable_height (drawable));
x2 = CLAMP (x2, 0, gimp_drawable_width (drawable));
y2 = CLAMP (y2, 0, gimp_drawable_height (drawable));
size = sizeof (ImageUndo) + ((x2 - x1) * (y2 - y1) *
gimp_drawable_bytes (drawable));
if ((new = undo_push (gimage, size, IMAGE_UNDO, TRUE)))
{
ImageUndo *image_undo;
TileManager *tiles;
PixelRegion srcPR, destPR;
image_undo = g_new0 (ImageUndo, 1);
new->data = image_undo;
new->pop_func = undo_pop_image;
new->free_func = undo_free_image;
/* If we cannot create a new temp buf--either because our parameters are
* degenerate or something else failed, simply return an unsuccessful push.
*/
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, tiles,
0, 0, (x2 - x1), (y2 - y1), TRUE);
copy_region (&srcPR, &destPR);
/* set the image undo structure */
image_undo->tiles = tiles;
image_undo->drawable = drawable;
image_undo->x1 = x1;
image_undo->y1 = y1;
image_undo->x2 = x2;
image_undo->y2 = y2;
image_undo->sparse = FALSE;
return TRUE;
}
return FALSE;
}
gboolean
undo_push_image_mod (GimpImage *gimage,
GimpDrawable *drawable,
gint x1,
gint y1,
gint x2,
gint y2,
TileManager *tiles,
gboolean sparse)
{
Undo *new;
gsize size;
gint dwidth, dheight;
if (! tiles)
return FALSE;
dwidth = gimp_drawable_width (drawable);
dheight = gimp_drawable_height (drawable);
x1 = CLAMP (x1, 0, dwidth);
y1 = CLAMP (y1, 0, dheight);
x2 = CLAMP (x2, 0, dwidth);
y2 = CLAMP (y2, 0, dheight);
size = sizeof (ImageUndo) + tile_manager_get_memsize (tiles);
if ((new = undo_push (gimage, size, IMAGE_MOD_UNDO, TRUE)))
{
ImageUndo *image_undo;
image_undo = g_new0 (ImageUndo, 1);
new->data = image_undo;
new->pop_func = undo_pop_image;
new->free_func = undo_free_image;
image_undo->tiles = tiles;
image_undo->drawable = drawable;
image_undo->x1 = x1;
image_undo->y1 = y1;
image_undo->x2 = x2;
image_undo->y2 = y2;
image_undo->sparse = sparse;
return TRUE;
}
tile_manager_destroy (tiles);
return FALSE;
}
static gboolean
undo_pop_image (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer image_undo_ptr)
{
ImageUndo *image_undo;
TileManager *tiles;
PixelRegion PR1, PR2;
gint x, y;
gint w, h;
image_undo = (ImageUndo *) image_undo_ptr;
tiles = image_undo->tiles;
/* some useful values */
x = image_undo->x1;
y = image_undo->y1;
if (image_undo->sparse == FALSE)
{
w = tile_manager_width (tiles);
h = tile_manager_height (tiles);
pixel_region_init (&PR1, tiles,
0, 0, w, h, TRUE);
pixel_region_init (&PR2, gimp_drawable_data (image_undo->drawable),
x, y, w, h, TRUE);
/* swap the regions */
swap_region (&PR1, &PR2);
}
else
{
int i, j;
Tile *src_tile;
Tile *dest_tile;
w = image_undo->x2 - image_undo->x1;
h = image_undo->y2 - image_undo->y1;
for (i = y; i < image_undo->y2; i += (TILE_HEIGHT - (i % TILE_HEIGHT)))
{
for (j = x; j < image_undo->x2; j += (TILE_WIDTH - (j % TILE_WIDTH)))
{
src_tile = tile_manager_get_tile (tiles, j, i, FALSE, FALSE);
if (tile_is_valid (src_tile) == TRUE)
{
/* swap tiles, not pixels! */
src_tile = tile_manager_get_tile (tiles, j, i, TRUE, FALSE /* TRUE */);
dest_tile = tile_manager_get_tile (gimp_drawable_data (image_undo->drawable), j, i, TRUE, FALSE /* TRUE */);
tile_manager_map_tile (tiles, j, i, dest_tile);
tile_manager_map_tile (gimp_drawable_data (image_undo->drawable), j, i, src_tile);
#if 0
swap_pixels (tile_data_pointer (src_tile, 0, 0),
tile_data_pointer (dest_tile, 0, 0),
tile_size (src_tile));
#endif
tile_release (dest_tile, FALSE /* TRUE */);
tile_release (src_tile, FALSE /* TRUE */);
}
}
}
}
gimp_drawable_update (image_undo->drawable, x, y, w, h);
return TRUE;
}
static void
undo_free_image (UndoState state,
UndoType type,
gpointer image_undo_ptr)
{
ImageUndo *image_undo;
image_undo = (ImageUndo *) image_undo_ptr;
tile_manager_destroy (image_undo->tiles);
g_free (image_undo);
}
/*********************/
/* Image Type Undo */
typedef struct _ImageTypeUndo ImageTypeUndo;
struct _ImageTypeUndo
{
GimpImageBaseType base_type;
};
static gboolean undo_pop_image_type (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_image_type (UndoState, UndoType, gpointer);
gboolean
undo_push_image_type (GimpImage *gimage)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ImageTypeUndo),
IMAGE_TYPE_UNDO, TRUE)))
{
ImageTypeUndo *itu;
itu = g_new0 (ImageTypeUndo, 1);
new->data = itu;
new->pop_func = undo_pop_image_type;
new->free_func = undo_free_image_type;
itu->base_type = gimage->base_type;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_type (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
ImageTypeUndo *itu;
GimpImageBaseType tmp;
itu = (ImageTypeUndo *) data_ptr;
tmp = itu->base_type;
itu->base_type = gimage->base_type;
gimage->base_type = tmp;
gimp_image_projection_allocate (gimage);
gimp_image_colormap_changed (gimage, -1);
if (itu->base_type != gimage->base_type)
mode_changed = TRUE;
return TRUE;
}
static void
undo_free_image_type (UndoState state,
UndoType type,
gpointer data_ptr)
{
g_free (data_ptr);
}
/*********************/
/* Image Size Undo */
typedef struct _ImageSizeUndo ImageSizeUndo;
struct _ImageSizeUndo
{
gint width;
gint height;
};
static gboolean undo_pop_image_size (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_image_size (UndoState, UndoType, gpointer);
gboolean
undo_push_image_size (GimpImage *gimage)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ImageSizeUndo),
IMAGE_SIZE_UNDO, TRUE)))
{
ImageSizeUndo *isu;
isu = g_new0 (ImageSizeUndo, 1);
new->data = isu;
new->pop_func = undo_pop_image_size;
new->free_func = undo_free_image_size;
isu->width = gimage->width;
isu->height = gimage->height;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_size (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
ImageSizeUndo *isu;
gint tmp;
isu = (ImageSizeUndo *) data_ptr;
tmp = isu->width;
isu->width = gimage->width;
gimage->width = tmp;
tmp = isu->height;
isu->height = gimage->height;
gimage->height = tmp;
gimp_image_projection_allocate (gimage);
gimp_image_mask_invalidate (gimage);
if (gimage->width != isu->width ||
gimage->height != isu->height)
size_changed = TRUE;
return TRUE;
}
static void
undo_free_image_size (UndoState state,
UndoType type,
gpointer data_ptr)
{
g_free (data_ptr);
}
/***************************/
/* Image Resolution Undo */
typedef struct _ResolutionUndo ResolutionUndo;
struct _ResolutionUndo
{
gdouble xres;
gdouble yres;
GimpUnit unit;
};
static gboolean undo_pop_image_resolution (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_image_resolution (UndoState, UndoType, gpointer);
gboolean
undo_push_image_resolution (GimpImage *gimage)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ResolutionUndo),
IMAGE_RESOLUTION_UNDO, TRUE)))
{
ResolutionUndo *ru;
ru = g_new (ResolutionUndo, 1);
new->data = ru;
new->pop_func = undo_pop_image_resolution;
new->free_func = undo_free_image_resolution;
ru->xres = gimage->xresolution;
ru->yres = gimage->yresolution;
ru->unit = gimage->unit;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_resolution (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
ResolutionUndo *ru;
ru = data_ptr;
if (ABS (ru->xres - gimage->xresolution) >= 1e-5 ||
ABS (ru->yres - gimage->yresolution) >= 1e-5)
{
gdouble old_xres;
gdouble old_yres;
old_xres = gimage->xresolution;
old_yres = gimage->yresolution;
gimage->xresolution = ru->xres;
gimage->yresolution = ru->yres;
ru->xres = old_xres;
ru->yres = old_yres;
resolution_changed = TRUE;
}
if (ru->unit != gimage->unit)
{
GimpUnit old_unit;
old_unit = gimage->unit;
gimage->unit = ru->unit;
ru->unit = old_unit;
unit_changed = TRUE;
}
return TRUE;
}
static void
undo_free_image_resolution (UndoState state,
UndoType type,
gpointer data_ptr)
{
g_free (data_ptr);
}
/****************/
/* Qmask Undo */
typedef struct _QmaskUndo QmaskUndo;
struct _QmaskUndo
{
GimpImage *gimage;
gboolean qmask;
};
static gboolean undo_pop_image_qmask (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_image_qmask (UndoState, UndoType, gpointer);
gboolean
undo_push_image_qmask (GimpImage *gimage)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (QmaskUndo),
IMAGE_QMASK_UNDO, TRUE)))
{
QmaskUndo *qu;
qu = g_new (QmaskUndo, 1);
new->data = qu;
new->pop_func = undo_pop_image_qmask;
new->free_func = undo_free_image_qmask;
qu->gimage = gimage;
qu->qmask = gimage->qmask_state;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_qmask (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
QmaskUndo *data;
gboolean tmp;
data = (QmaskUndo *) data_ptr;
tmp = gimage->qmask_state;
gimage->qmask_state = data->qmask;
data->qmask = tmp;
qmask_changed = TRUE;
return TRUE;
}
static void
undo_free_image_qmask (UndoState state,
UndoType type,
gpointer data_ptr)
{
g_free (data_ptr);
}
/****************/
/* Guide Undo */
typedef struct _GuideUndo GuideUndo;
struct _GuideUndo
{
GimpImage *gimage;
GimpGuide *guide;
GimpGuide orig;
};
static gboolean undo_pop_image_guide (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_image_guide (UndoState, UndoType, gpointer);
gboolean
undo_push_image_guide (GimpImage *gimage,
GimpGuide *guide)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (GuideUndo),
IMAGE_GUIDE_UNDO, TRUE)))
{
GuideUndo *gu;
gu = g_new (GuideUndo, 1);
new->data = gu;
new->pop_func = undo_pop_image_guide;
new->free_func = undo_free_image_guide;
guide->ref_count++;
gu->gimage = gimage;
gu->guide = guide;
gu->orig = *guide;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_image_guide (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
GuideUndo *data;
GimpGuide tmp;
gint tmp_ref;
data = data_ptr;
gimp_image_update_guide (gimage, data->guide);
tmp_ref = data->guide->ref_count;
tmp = *(data->guide);
*(data->guide) = data->orig;
data->guide->ref_count = tmp_ref;
data->orig = tmp;
gimp_image_update_guide (gimage, data->guide);
return TRUE;
}
static void
undo_free_image_guide (UndoState state,
UndoType type,
gpointer data_ptr)
{
GuideUndo *data;
data = (GuideUndo *) data_ptr;
data->guide->ref_count--;
if (data->guide->position < 0 && data->guide->ref_count <= 0)
{
gimp_image_remove_guide (data->gimage, data->guide);
g_free (data->guide);
}
g_free (data);
}
/***************/
/* Mask Undo */
typedef struct _MaskUndo MaskUndo;
struct _MaskUndo
{
GimpChannel *channel; /* the channel this undo is for */
TileManager *tiles; /* the actual mask */
gint x, y; /* offsets */
};
static gboolean undo_pop_mask (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_mask (UndoState, UndoType, gpointer);
gboolean
undo_push_mask (GimpImage *gimage,
GimpChannel *mask)
{
TileManager *undo_tiles;
gint x1, y1, x2, y2;
Undo *new;
gsize size;
if (gimp_channel_bounds (mask, &x1, &y1, &x2, &y2))
{
PixelRegion srcPR, destPR;
undo_tiles = tile_manager_new ((x2 - x1), (y2 - y1), 1);
pixel_region_init (&srcPR, GIMP_DRAWABLE (mask)->tiles,
x1, y1, (x2 - x1), (y2 - y1), FALSE);
pixel_region_init (&destPR, undo_tiles,
0, 0, (x2 - x1), (y2 - y1), TRUE);
copy_region (&srcPR, &destPR);
}
else
undo_tiles = NULL;
size = sizeof (MaskUndo);
if (undo_tiles)
size += tile_manager_get_memsize (undo_tiles);
if ((new = undo_push (gimage, size, MASK_UNDO, FALSE)))
{
MaskUndo *mask_undo;
mask_undo = g_new0 (MaskUndo, 1);
new->data = mask_undo;
new->pop_func = undo_pop_mask;
new->free_func = undo_free_mask;
mask_undo->channel = mask;
mask_undo->tiles = undo_tiles;
mask_undo->x = x1;
mask_undo->y = y1;
return TRUE;
}
if (undo_tiles)
tile_manager_destroy (undo_tiles);
return FALSE;
}
static gboolean
undo_pop_mask (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer mask_ptr)
{
MaskUndo *mask_undo;
TileManager *new_tiles;
PixelRegion srcPR, destPR;
gint x1, y1, x2, y2;
gint width, height;
guchar empty = 0;
width = height = 0;
mask_undo = (MaskUndo *) mask_ptr;
if (gimp_channel_bounds (mask_undo->channel, &x1, &y1, &x2, &y2))
{
new_tiles = tile_manager_new ((x2 - x1), (y2 - y1), 1);
pixel_region_init (&srcPR, GIMP_DRAWABLE (mask_undo->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 (mask_undo->channel)->tiles,
x1, y1, (x2 - x1), (y2 - y1), TRUE);
color_region (&srcPR, &empty);
}
else
new_tiles = NULL;
if (mask_undo->tiles)
{
width = tile_manager_width (mask_undo->tiles);
height = tile_manager_height (mask_undo->tiles);
pixel_region_init (&srcPR, mask_undo->tiles,
0, 0, width, height, FALSE);
pixel_region_init (&destPR, GIMP_DRAWABLE (mask_undo->channel)->tiles,
mask_undo->x, mask_undo->y, width, height, TRUE);
copy_region (&srcPR, &destPR);
tile_manager_destroy (mask_undo->tiles);
}
if (mask_undo->channel == gimp_image_get_mask (gimage))
{
/* invalidate the current bounds and boundary of the mask */
gimp_image_mask_invalidate (gimage);
}
else
{
mask_undo->channel->boundary_known = FALSE;
GIMP_DRAWABLE (mask_undo->channel)->preview_valid = FALSE;
}
if (mask_undo->tiles)
{
mask_undo->channel->empty = FALSE;
mask_undo->channel->x1 = mask_undo->x;
mask_undo->channel->y1 = mask_undo->y;
mask_undo->channel->x2 = mask_undo->x + width;
mask_undo->channel->y2 = mask_undo->y + height;
}
else
{
mask_undo->channel->empty = TRUE;
mask_undo->channel->x1 = 0;
mask_undo->channel->y1 = 0;
mask_undo->channel->x2 = GIMP_DRAWABLE (mask_undo->channel)->width;
mask_undo->channel->y2 = GIMP_DRAWABLE (mask_undo->channel)->height;
}
/* we know the bounds */
mask_undo->channel->bounds_known = TRUE;
/* set the new mask undo parameters */
mask_undo->tiles = new_tiles;
mask_undo->x = x1;
mask_undo->y = y1;
if (mask_undo->channel == gimp_image_get_mask (gimage))
{
mask_changed = TRUE;
}
else
{
gimp_drawable_update (GIMP_DRAWABLE (mask_undo->channel),
0, 0,
GIMP_DRAWABLE (mask_undo->channel)->width,
GIMP_DRAWABLE (mask_undo->channel)->height);
}
return TRUE;
}
static void
undo_free_mask (UndoState state,
UndoType type,
gpointer mask_ptr)
{
MaskUndo *mask_undo;
mask_undo = (MaskUndo *) mask_ptr;
if (mask_undo->tiles)
tile_manager_destroy (mask_undo->tiles);
g_free (mask_undo);
}
/**********************/
/* Item Rename Undo */
typedef struct _ItemRenameUndo ItemRenameUndo;
struct _ItemRenameUndo
{
GimpItem *item;
gchar *old_name;
};
static gboolean undo_pop_item_rename (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_item_rename (UndoState, UndoType, gpointer);
gboolean
undo_push_item_rename (GimpImage *gimage,
GimpItem *item)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ItemRenameUndo),
ITEM_RENAME_UNDO, TRUE)))
{
ItemRenameUndo *iru;
iru = g_new0 (ItemRenameUndo, 1);
new->data = iru;
new->pop_func = undo_pop_item_rename;
new->free_func = undo_free_item_rename;
iru->item = item;
iru->old_name = g_strdup (gimp_object_get_name (GIMP_OBJECT (item)));
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_item_rename (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer iru_ptr)
{
ItemRenameUndo *iru;
gchar *tmp;
iru = (ItemRenameUndo *) iru_ptr;
tmp = g_strdup (gimp_object_get_name (GIMP_OBJECT (iru->item)));
gimp_object_set_name (GIMP_OBJECT (iru->item), iru->old_name);
g_free (iru->old_name);
iru->old_name = tmp;
return TRUE;
}
static void
undo_free_item_rename (UndoState state,
UndoType type,
gpointer iru_ptr)
{
ItemRenameUndo *iru;
iru = (ItemRenameUndo *) iru_ptr;
g_free (iru->old_name);
g_free (iru);
}
/***************************/
/* Layer Add/Remove Undo */
typedef struct _LayerUndo LayerUndo;
struct _LayerUndo
{
GimpLayer *layer; /* the actual layer */
gint prev_position; /* former position in list */
GimpLayer *prev_layer; /* previous active layer */
};
static gboolean undo_push_layer (GimpImage *gimage,
UndoType type,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer);
static gboolean undo_pop_layer (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_layer (UndoState, UndoType, gpointer);
gboolean
undo_push_layer_add (GimpImage *gimage,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer)
{
return undo_push_layer (gimage, LAYER_ADD_UNDO,
layer, prev_position, prev_layer);
}
gboolean
undo_push_layer_remove (GimpImage *gimage,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer)
{
return undo_push_layer (gimage, LAYER_REMOVE_UNDO,
layer, prev_position, prev_layer);
}
static gboolean
undo_push_layer (GimpImage *gimage,
UndoType type,
GimpLayer *layer,
gint prev_position,
GimpLayer *prev_layer)
{
Undo *new;
gsize size;
g_return_val_if_fail (type == LAYER_ADD_UNDO ||
type == LAYER_REMOVE_UNDO,
FALSE);
size = sizeof (LayerUndo) + gimp_object_get_memsize (GIMP_OBJECT (layer));
if ((new = undo_push (gimage, size, type, TRUE)))
{
LayerUndo *lu;
lu = g_new0 (LayerUndo, 1);
new->data = lu;
new->pop_func = undo_pop_layer;
new->free_func = undo_free_layer;
g_object_ref (G_OBJECT (layer));
lu->layer = layer;
lu->prev_position = prev_position;
lu->prev_layer = prev_layer;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer lu_ptr)
{
LayerUndo *lu;
lu = (LayerUndo *) lu_ptr;
if ((state == UNDO && type == LAYER_ADD_UNDO) ||
(state == REDO && type == LAYER_REMOVE_UNDO))
{
/* remove layer */
/* record the current position */
lu->prev_position = gimp_image_get_layer_index (gimage, lu->layer);
/* set the previous layer */
gimp_image_set_active_layer (gimage, lu->prev_layer);
/* remove the layer */
gimp_container_remove (gimage->layers, GIMP_OBJECT (lu->layer));
gimage->layer_stack = g_slist_remove (gimage->layer_stack, lu->layer);
/* reset the gimage values */
if (gimp_layer_is_floating_sel (lu->layer))
{
gimage->floating_sel = NULL;
/* reset the old drawable */
floating_sel_reset (lu->layer);
gimp_image_floating_selection_changed (gimage);
}
gimp_drawable_update (GIMP_DRAWABLE (lu->layer),
0, 0,
GIMP_DRAWABLE (lu->layer)->width,
GIMP_DRAWABLE (lu->layer)->height);
if (gimp_container_num_children (gimage->layers) == 1 &&
! gimp_drawable_has_alpha (GIMP_LIST (gimage->layers)->list->data))
{
alpha_changed = TRUE;
}
}
else
{
/* restore layer */
/* record the active layer */
lu->prev_layer = gimp_image_get_active_layer (gimage);
/* hide the current selection--for all views */
if (gimp_image_get_active_layer (gimage))
gimp_layer_invalidate_boundary (gimp_image_get_active_layer (gimage));
/* if this is a floating selection, set the fs pointer */
if (gimp_layer_is_floating_sel (lu->layer))
gimage->floating_sel = lu->layer;
if (gimp_container_num_children (gimage->layers) == 1 &&
! gimp_drawable_has_alpha (GIMP_LIST (gimage->layers)->list->data))
{
alpha_changed = TRUE;
}
/* add the new layer */
gimp_container_insert (gimage->layers,
GIMP_OBJECT (lu->layer), lu->prev_position);
gimp_image_set_active_layer (gimage, lu->layer);
if (gimp_layer_is_floating_sel (lu->layer))
gimp_image_floating_selection_changed (gimage);
gimp_drawable_update (GIMP_DRAWABLE (lu->layer),
0, 0,
GIMP_DRAWABLE (lu->layer)->width,
GIMP_DRAWABLE (lu->layer)->height);
}
return TRUE;
}
static void
undo_free_layer (UndoState state,
UndoType type,
gpointer lu_ptr)
{
LayerUndo *lu;
lu = (LayerUndo *) lu_ptr;
g_object_unref (G_OBJECT (lu->layer));
g_free (lu);
}
/********************/
/* Layer Mod Undo */
typedef struct _LayerModUndo LayerModUndo;
struct _LayerModUndo
{
GimpLayer *layer;
TileManager *tiles;
GimpImageType type;
gint offset_x;
gint offset_y;
};
static gboolean undo_pop_layer_mod (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_layer_mod (UndoState, UndoType, gpointer);
gboolean
undo_push_layer_mod (GimpImage *gimage,
GimpLayer *layer)
{
Undo *new;
TileManager *tiles;
gsize size;
tiles = GIMP_DRAWABLE (layer)->tiles;
size = sizeof (LayerModUndo) + tile_manager_get_memsize (tiles);
if ((new = undo_push (gimage, size, LAYER_MOD_UNDO, TRUE)))
{
LayerModUndo *lmu;
lmu = g_new0 (LayerModUndo, 1);
new->data = lmu;
new->pop_func = undo_pop_layer_mod;
new->free_func = undo_free_layer_mod;
lmu->layer = layer;
lmu->tiles = tiles;
lmu->type = GIMP_DRAWABLE (layer)->type;
lmu->offset_x = GIMP_DRAWABLE (layer)->offset_x;
lmu->offset_y = GIMP_DRAWABLE (layer)->offset_y;
return TRUE;
}
tile_manager_destroy (tiles);
return FALSE;
}
static gboolean
undo_pop_layer_mod (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer lmu_ptr)
{
LayerModUndo *lmu;
gint layer_type;
gint offset_x, offset_y;
TileManager *tiles;
TileManager *temp;
GimpLayer *layer;
gboolean old_has_alpha;
lmu = (LayerModUndo *) lmu_ptr;
layer = lmu->layer;
tiles = lmu->tiles;
offset_x = lmu->offset_x;
offset_y = lmu->offset_y;
/* Issue the first update */
gimp_image_update (gimage,
GIMP_DRAWABLE (layer)->offset_x,
GIMP_DRAWABLE (layer)->offset_y,
GIMP_DRAWABLE (layer)->width,
GIMP_DRAWABLE (layer)->height);
/* Create a tile manager to store the current layer contents */
temp = GIMP_DRAWABLE (layer)->tiles;
lmu->offset_x = GIMP_DRAWABLE (layer)->offset_x;
lmu->offset_y = GIMP_DRAWABLE (layer)->offset_y;
layer_type = lmu->type;
lmu->type = GIMP_DRAWABLE (layer)->type;
old_has_alpha = GIMP_DRAWABLE (layer)->has_alpha;
/* restore the layer's data */
GIMP_DRAWABLE (layer)->tiles = tiles;
GIMP_DRAWABLE (layer)->width = tile_manager_width (tiles);
GIMP_DRAWABLE (layer)->height = tile_manager_height (tiles);
GIMP_DRAWABLE (layer)->bytes = tile_manager_bpp (tiles);
GIMP_DRAWABLE (layer)->type = layer_type;
GIMP_DRAWABLE (layer)->has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (layer_type);
GIMP_DRAWABLE (layer)->offset_x = offset_x;
GIMP_DRAWABLE (layer)->offset_y = offset_y;
if (layer->mask)
{
GIMP_DRAWABLE (layer->mask)->offset_x = offset_x;
GIMP_DRAWABLE (layer->mask)->offset_y = offset_y;
}
if (GIMP_DRAWABLE (layer)->has_alpha != old_has_alpha &&
GIMP_ITEM (layer)->gimage->layers->num_children == 1)
{
gimp_image_alpha_changed (GIMP_ITEM (layer)->gimage);
}
/* Set the new tile manager */
lmu->tiles = temp;
/* Issue the second update */
gimp_drawable_update (GIMP_DRAWABLE (layer),
0, 0,
GIMP_DRAWABLE (layer)->width,
GIMP_DRAWABLE (layer)->height);
return TRUE;
}
static void
undo_free_layer_mod (UndoState state,
UndoType type,
gpointer lmu_ptr)
{
LayerModUndo *lmu;
lmu = (LayerModUndo *) lmu_ptr;
tile_manager_destroy (lmu->tiles);
g_free (lmu);
}
/********************************/
/* Layer Mask Add/Remove Undo */
typedef struct _LayerMaskUndo LayerMaskUndo;
struct _LayerMaskUndo
{
GimpLayer *layer; /* the layer */
GimpLayerMask *mask; /* the layer mask */
};
static gboolean undo_push_layer_mask (GimpImage *gimage,
UndoType type,
GimpLayer *layer,
GimpLayerMask *mask);
static gboolean undo_pop_layer_mask (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_layer_mask (UndoState, UndoType, gpointer);
gboolean
undo_push_layer_mask_add (GimpImage *gimage,
GimpLayer *layer,
GimpLayerMask *mask)
{
return undo_push_layer_mask (gimage, LAYER_MASK_ADD_UNDO,
layer, mask);
}
gboolean
undo_push_layer_mask_remove (GimpImage *gimage,
GimpLayer *layer,
GimpLayerMask *mask)
{
return undo_push_layer_mask (gimage, LAYER_MASK_REMOVE_UNDO,
layer, mask);
}
static gboolean
undo_push_layer_mask (GimpImage *gimage,
UndoType type,
GimpLayer *layer,
GimpLayerMask *mask)
{
Undo *new;
gsize size;
g_return_val_if_fail (type == LAYER_MASK_ADD_UNDO ||
type == LAYER_MASK_REMOVE_UNDO,
FALSE);
size = sizeof (LayerMaskUndo) + gimp_object_get_memsize (GIMP_OBJECT (mask));
if ((new = undo_push (gimage, size, type, TRUE)))
{
LayerMaskUndo *lmu;
lmu = g_new0 (LayerMaskUndo, 1);
new->data = lmu;
new->pop_func = undo_pop_layer_mask;
new->free_func = undo_free_layer_mask;
g_object_ref (G_OBJECT (mask));
lmu->layer = layer;
lmu->mask = mask;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer_mask (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer lmu_ptr)
{
LayerMaskUndo *lmu;
lmu = (LayerMaskUndo *) lmu_ptr;
if ((state == UNDO && type == LAYER_MASK_ADD_UNDO) ||
(state == REDO && type == LAYER_MASK_REMOVE_UNDO))
{
/* remove layer mask */
gimp_layer_apply_mask (lmu->layer, GIMP_MASK_DISCARD, FALSE);
}
else
{
/* restore layer */
gimp_layer_add_mask (lmu->layer, lmu->mask, FALSE);
}
return TRUE;
}
static void
undo_free_layer_mask (UndoState state,
UndoType type,
gpointer lmu_ptr)
{
LayerMaskUndo *lmu;
lmu = (LayerMaskUndo *) lmu_ptr;
g_object_unref (G_OBJECT (lmu->mask));
g_free (lmu);
}
/***************************/
/* Layer re-position Undo */
typedef struct _LayerRepositionUndo LayerRepositionUndo;
struct _LayerRepositionUndo
{
GimpLayer *layer;
gint old_position;
};
static gboolean undo_pop_layer_reposition (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_layer_reposition (UndoState, UndoType, gpointer);
gboolean
undo_push_layer_reposition (GimpImage *gimage,
GimpLayer *layer)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (LayerRepositionUndo),
LAYER_REPOSITION_UNDO, TRUE)))
{
LayerRepositionUndo *lru;
lru = g_new0 (LayerRepositionUndo, 1);
new->data = lru;
new->pop_func = undo_pop_layer_reposition;
new->free_func = undo_free_layer_reposition;
lru->layer = layer;
lru->old_position = gimp_image_get_layer_index (gimage, layer);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer_reposition (GimpImage *gimage,
UndoState state,
UndoType type,
void *data_ptr)
{
LayerRepositionUndo *data = data_ptr;
gint pos;
/* what's the layer's current index? */
pos = gimp_image_get_layer_index (gimage, data->layer);
gimp_image_position_layer (gimage, data->layer, data->old_position, FALSE);
data->old_position = pos;
return TRUE;
}
static void
undo_free_layer_reposition (UndoState state,
UndoType type,
void *data_ptr)
{
g_free (data_ptr);
}
/*****************************/
/* Layer displacement Undo */
typedef struct _LayerDisplaceUndo LayerDisplaceUndo;
struct _LayerDisplaceUndo
{
gint info[3];
GSList *path_undo;
};
static gboolean undo_pop_layer_displace (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_layer_displace (UndoState, UndoType, gpointer);
gboolean
undo_push_layer_displace (GimpImage *gimage,
GimpLayer *layer)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (LayerDisplaceUndo),
LAYER_DISPLACE_UNDO, TRUE)))
{
LayerDisplaceUndo *ldu;
ldu = g_new (LayerDisplaceUndo, 1);
new->data = ldu;
new->pop_func = undo_pop_layer_displace;
new->free_func = undo_free_layer_displace;
ldu->info[0] = gimp_item_get_ID (GIMP_ITEM (layer));
ldu->info[1] = GIMP_DRAWABLE (layer)->offset_x;
ldu->info[2] = GIMP_DRAWABLE (layer)->offset_y;
ldu->path_undo = path_transform_start_undo (gimage);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_layer_displace (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer info_ptr)
{
GimpLayer *layer;
gint old_offsets[2];
LayerDisplaceUndo *ldu;
ldu = (LayerDisplaceUndo *) info_ptr;
layer = (GimpLayer *) gimp_item_get_by_ID (gimage->gimp, ldu->info[0]);
if (layer)
{
old_offsets[0] = GIMP_DRAWABLE (layer)->offset_x;
old_offsets[1] = GIMP_DRAWABLE (layer)->offset_y;
gimp_drawable_update (GIMP_DRAWABLE (layer),
0, 0,
GIMP_DRAWABLE (layer)->width,
GIMP_DRAWABLE (layer)->height);
GIMP_DRAWABLE (layer)->offset_x = ldu->info[1];
GIMP_DRAWABLE (layer)->offset_y = ldu->info[2];
gimp_drawable_update (GIMP_DRAWABLE (layer),
0, 0,
GIMP_DRAWABLE (layer)->width,
GIMP_DRAWABLE (layer)->height);
if (layer->mask)
{
GIMP_DRAWABLE (layer->mask)->offset_x = ldu->info[1];
GIMP_DRAWABLE (layer->mask)->offset_y = ldu->info[2];
gimp_drawable_update (GIMP_DRAWABLE (layer->mask),
0, 0,
GIMP_DRAWABLE (layer->mask)->width,
GIMP_DRAWABLE (layer->mask)->height);
}
/* invalidate the selection boundary because of a layer modification */
gimp_layer_invalidate_boundary (layer);
ldu->info[1] = old_offsets[0];
ldu->info[2] = old_offsets[1];
/* Now undo paths bits */
if (ldu->path_undo)
path_transform_do_undo (gimage, ldu->path_undo);
return TRUE;
}
else
return FALSE;
}
static void
undo_free_layer_displace (UndoState state,
UndoType type,
gpointer info_ptr)
{
LayerDisplaceUndo * ldu;
ldu = (LayerDisplaceUndo *) info_ptr;
/* Free mem held for paths undo stuff */
if (ldu->path_undo)
path_transform_free_undo (ldu->path_undo);
g_free (info_ptr);
}
/*****************************/
/* Add/Remove Channel Undo */
typedef struct _ChannelUndo ChannelUndo;
struct _ChannelUndo
{
GimpChannel *channel; /* the actual channel */
gint prev_position; /* former position in list */
GimpChannel *prev_channel; /* previous active channel */
};
static gboolean undo_push_channel (GimpImage *gimage,
UndoType type,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel);
static gboolean undo_pop_channel (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_channel (UndoState, UndoType, gpointer);
gboolean
undo_push_channel_add (GimpImage *gimage,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel)
{
return undo_push_channel (gimage, CHANNEL_ADD_UNDO,
channel, prev_position, prev_channel);
}
gboolean
undo_push_channel_remove (GimpImage *gimage,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel)
{
return undo_push_channel (gimage, CHANNEL_REMOVE_UNDO,
channel, prev_position, prev_channel);
}
static gboolean
undo_push_channel (GimpImage *gimage,
UndoType type,
GimpChannel *channel,
gint prev_position,
GimpChannel *prev_channel)
{
Undo *new;
gsize size;
g_return_val_if_fail (type == CHANNEL_ADD_UNDO ||
type == CHANNEL_REMOVE_UNDO,
FALSE);
size = sizeof (ChannelUndo) + gimp_object_get_memsize (GIMP_OBJECT (channel));
if ((new = undo_push (gimage, size, type, TRUE)))
{
ChannelUndo *cu;
cu = g_new0 (ChannelUndo, 1);
new->data = cu;
new->pop_func = undo_pop_channel;
new->free_func = undo_free_channel;
g_object_ref (G_OBJECT (channel));
cu->channel = channel;
cu->prev_position = prev_position;
cu->prev_channel = prev_channel;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_channel (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer cu_ptr)
{
ChannelUndo *cu;
cu = (ChannelUndo *) cu_ptr;
if ((state == UNDO && type == CHANNEL_ADD_UNDO) ||
(state == REDO && type == CHANNEL_REMOVE_UNDO))
{
/* remove channel */
/* record the current position */
cu->prev_position = gimp_image_get_channel_index (gimage, cu->channel);
/* remove the channel */
gimp_container_remove (gimage->channels, GIMP_OBJECT (cu->channel));
if (cu->prev_channel)
{
/* set the previous channel */
gimp_image_set_active_channel (gimage, cu->prev_channel);
}
/* update the area */
gimp_drawable_update (GIMP_DRAWABLE (cu->channel),
0, 0,
GIMP_DRAWABLE (cu->channel)->width,
GIMP_DRAWABLE (cu->channel)->height);
}
else
{
/* restore channel */
/* record the active channel */
cu->prev_channel = gimp_image_get_active_channel (gimage);
/* add the new channel */
gimp_container_insert (gimage->channels,
GIMP_OBJECT (cu->channel), cu->prev_position);
/* set the new channel */
gimp_image_set_active_channel (gimage, cu->channel);
/* update the area */
gimp_drawable_update (GIMP_DRAWABLE (cu->channel),
0, 0,
GIMP_DRAWABLE (cu->channel)->width,
GIMP_DRAWABLE (cu->channel)->height);
}
return TRUE;
}
static void
undo_free_channel (UndoState state,
UndoType type,
gpointer cu_ptr)
{
ChannelUndo *cu;
cu = (ChannelUndo *) cu_ptr;
g_object_unref (G_OBJECT (cu->channel));
g_free (cu);
}
/**********************/
/* Channel Mod Undo */
typedef struct _ChannelModUndo ChannelModUndo;
struct _ChannelModUndo
{
GimpChannel *channel;
TileManager *tiles;
};
static gboolean undo_pop_channel_mod (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_channel_mod (UndoState, UndoType, gpointer);
gboolean
undo_push_channel_mod (GimpImage *gimage,
GimpChannel *channel)
{
TileManager *tiles;
Undo *new;
gsize size;
tiles = GIMP_DRAWABLE (channel)->tiles;
size = sizeof (ChannelModUndo) + tile_manager_get_memsize (tiles);
if ((new = undo_push (gimage, size, CHANNEL_MOD_UNDO, TRUE)))
{
ChannelModUndo *cmu;
cmu = g_new0 (ChannelModUndo, 1);
new->data = cmu;
new->pop_func = undo_pop_channel_mod;
new->free_func = undo_free_channel_mod;
cmu->channel = channel;
cmu->tiles = tiles;
return TRUE;
}
tile_manager_destroy (tiles);
return FALSE;
}
static gboolean
undo_pop_channel_mod (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer cmu_ptr)
{
ChannelModUndo *cmu;
TileManager *tiles;
TileManager *temp;
GimpChannel *channel;
cmu = (ChannelModUndo *) cmu_ptr;
channel = cmu->channel;
tiles = cmu->tiles;
/* Issue the first update */
gimp_drawable_update (GIMP_DRAWABLE (channel),
0, 0,
GIMP_DRAWABLE (channel)->width,
GIMP_DRAWABLE (channel)->height);
temp = GIMP_DRAWABLE (channel)->tiles;
GIMP_DRAWABLE (channel)->tiles = tiles;
GIMP_DRAWABLE (channel)->width = tile_manager_width (tiles);
GIMP_DRAWABLE (channel)->height = tile_manager_height (tiles);
GIMP_CHANNEL (channel)->bounds_known = FALSE;
/* Set the new buffer */
cmu->tiles = temp;
/* Issue the second update */
gimp_drawable_update (GIMP_DRAWABLE (channel),
0, 0,
GIMP_DRAWABLE (channel)->width,
GIMP_DRAWABLE (channel)->height);
return TRUE;
}
static void
undo_free_channel_mod (UndoState state,
UndoType type,
gpointer cmu_ptr)
{
ChannelModUndo *cmu;
cmu = (ChannelModUndo *) cmu_ptr;
tile_manager_destroy (cmu->tiles);
g_free (cmu);
}
/******************************/
/* Channel re-position Undo */
typedef struct _ChannelRepositionUndo ChannelRepositionUndo;
struct _ChannelRepositionUndo
{
GimpChannel *channel;
gint old_position;
};
static gboolean undo_pop_channel_reposition (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_channel_reposition (UndoState, UndoType, gpointer);
gboolean
undo_push_channel_reposition (GimpImage *gimage,
GimpChannel *channel)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ChannelRepositionUndo),
CHANNEL_REPOSITION_UNDO, TRUE)))
{
ChannelRepositionUndo *cru;
cru = g_new0 (ChannelRepositionUndo, 1);
new->data = cru;
new->pop_func = undo_pop_channel_reposition;
new->free_func = undo_free_channel_reposition;
cru->channel = channel;
cru->old_position = gimp_image_get_channel_index (gimage, channel);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_channel_reposition (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer cru_ptr)
{
ChannelRepositionUndo *cru;
gint pos;
cru = (ChannelRepositionUndo *) cru_ptr;
/* what's the channel's current index? */
pos = gimp_image_get_channel_index (gimage, cru->channel);
gimp_image_position_channel (gimage, cru->channel, cru->old_position, FALSE);
cru->old_position = pos;
return TRUE;
}
static void
undo_free_channel_reposition (UndoState state,
UndoType type,
gpointer cru_ptr)
{
g_free (cru_ptr);
}
/*****************************/
/* Add/Remove Vectors Undo */
typedef struct _VectorsUndo VectorsUndo;
struct _VectorsUndo
{
GimpVectors *vectors; /* the actual vectors */
gint prev_position; /* former position in list */
GimpVectors *prev_vectors; /* previous active vectors */
};
static gboolean undo_push_vectors (GimpImage *gimage,
UndoType type,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors);
static gboolean undo_pop_vectors (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_vectors (UndoState, UndoType, gpointer);
gboolean
undo_push_vectors_add (GimpImage *gimage,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors)
{
return undo_push_vectors (gimage, VECTORS_ADD_UNDO,
vectors, prev_position, prev_vectors);
}
gboolean
undo_push_vectors_remove (GimpImage *gimage,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors)
{
return undo_push_vectors (gimage, VECTORS_REMOVE_UNDO,
vectors, prev_position, prev_vectors);
}
static gboolean
undo_push_vectors (GimpImage *gimage,
UndoType type,
GimpVectors *vectors,
gint prev_position,
GimpVectors *prev_vectors)
{
Undo *new;
gsize size;
g_return_val_if_fail (type == VECTORS_ADD_UNDO ||
type == VECTORS_REMOVE_UNDO,
FALSE);
size = sizeof (VectorsUndo) + gimp_object_get_memsize (GIMP_OBJECT (vectors));
if ((new = undo_push (gimage, size, type, TRUE)))
{
VectorsUndo *vu;
vu = g_new0 (VectorsUndo, 1);
new->data = vu;
new->pop_func = undo_pop_vectors;
new->free_func = undo_free_vectors;
g_object_ref (G_OBJECT (vectors));
vu->vectors = vectors;
vu->prev_position = prev_position;
vu->prev_vectors = prev_vectors;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_vectors (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer vu_ptr)
{
VectorsUndo *vu;
vu = (VectorsUndo *) vu_ptr;
if ((state == UNDO && type == VECTORS_ADD_UNDO) ||
(state == REDO && type == VECTORS_REMOVE_UNDO))
{
/* remove vectors */
/* record the current position */
vu->prev_position = gimp_image_get_vectors_index (gimage, vu->vectors);
/* remove the vectors */
gimp_container_remove (gimage->vectors, GIMP_OBJECT (vu->vectors));
if (vu->prev_vectors)
{
/* set the previous vectors */
gimp_image_set_active_vectors (gimage, vu->prev_vectors);
}
}
else
{
/* restore vectors */
/* record the active vectors */
vu->prev_vectors = gimp_image_get_active_vectors (gimage);
/* add the new vectors */
gimp_container_insert (gimage->vectors,
GIMP_OBJECT (vu->vectors), vu->prev_position);
/* set the new vectors */
gimp_image_set_active_vectors (gimage, vu->vectors);
}
return TRUE;
}
static void
undo_free_vectors (UndoState state,
UndoType type,
gpointer vu_ptr)
{
VectorsUndo *vu;
vu = (VectorsUndo *) vu_ptr;
g_object_unref (G_OBJECT (vu->vectors));
g_free (vu);
}
/**********************/
/* Vectors Mod Undo */
typedef struct _VectorsModUndo VectorsModUndo;
struct _VectorsModUndo
{
GimpVectors *vectors;
GimpVectors *undo_vectors;
};
static gboolean undo_pop_vectors_mod (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_vectors_mod (UndoState, UndoType, gpointer);
gboolean
undo_push_vectors_mod (GimpImage *gimage,
GimpVectors *vectors)
{
Undo *new;
gsize size;
size = (sizeof (VectorsModUndo) +
gimp_object_get_memsize (GIMP_OBJECT (vectors)));
if ((new = undo_push (gimage, size, VECTORS_MOD_UNDO, TRUE)))
{
VectorsModUndo *vmu;
vmu = g_new0 (VectorsModUndo, 1);
new->data = vmu;
new->pop_func = undo_pop_vectors_mod;
new->free_func = undo_free_vectors_mod;
vmu->vectors = vectors;
vmu->undo_vectors = NULL; /* gimp_vectors_duplicate (vectors); */
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_vectors_mod (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer vmu_ptr)
{
VectorsModUndo *vmu;
GimpVectors *temp;
vmu = (VectorsModUndo *) vmu_ptr;
temp = vmu->undo_vectors;
vmu->undo_vectors = NULL; /* gimp_vectors_duplicate (vmu->vectors); */
/* gimp_vectors_copy_strokes (temp, vmu->vectors); */
/* g_object_unref (G_OBJECT (temp)); */
return TRUE;
}
static void
undo_free_vectors_mod (UndoState state,
UndoType type,
gpointer vmu_ptr)
{
VectorsModUndo *vmu;
vmu = (VectorsModUndo *) vmu_ptr;
/* g_object_unref (G_OBJECT (vmu->undo_vectors)); */
g_free (vmu);
}
/******************************/
/* Vectors re-position Undo */
typedef struct _VectorsRepositionUndo VectorsRepositionUndo;
struct _VectorsRepositionUndo
{
GimpVectors *vectors;
gint old_position;
};
static gboolean undo_pop_vectors_reposition (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_vectors_reposition (UndoState, UndoType, gpointer);
gboolean
undo_push_vectors_reposition (GimpImage *gimage,
GimpVectors *vectors)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (VectorsRepositionUndo),
VECTORS_REPOSITION_UNDO, TRUE)))
{
VectorsRepositionUndo *vru;
vru = g_new0 (VectorsRepositionUndo, 1);
new->data = vru;
new->pop_func = undo_pop_vectors_reposition;
new->free_func = undo_free_vectors_reposition;
vru->vectors = vectors;
vru->old_position = gimp_image_get_vectors_index (gimage, vectors);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_vectors_reposition (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer vru_ptr)
{
VectorsRepositionUndo *vru;
gint pos;
vru = (VectorsRepositionUndo *) vru_ptr;
/* what's the vectors's current index? */
pos = gimp_image_get_vectors_index (gimage, vru->vectors);
gimp_image_position_vectors (gimage, vru->vectors, vru->old_position, FALSE);
vru->old_position = pos;
return TRUE;
}
static void
undo_free_vectors_reposition (UndoState state,
UndoType type,
gpointer vru_ptr)
{
g_free (vru_ptr);
}
/**************************************/
/* 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 (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_fs_to_layer (UndoState, UndoType, gpointer);
gboolean
undo_push_fs_to_layer (GimpImage *gimage,
GimpLayer *floating_layer,
GimpDrawable *drawable)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (FStoLayerUndo),
FS_TO_LAYER_UNDO, TRUE)))
{
FStoLayerUndo *fsu;
fsu = g_new0 (FStoLayerUndo, 1);
new->data = fsu;
new->pop_func = undo_pop_fs_to_layer;
new->free_func = undo_free_fs_to_layer;
fsu->floating_layer = floating_layer;
fsu->drawable = drawable;
return TRUE;
}
tile_manager_destroy (floating_layer->fs.backing_store);
floating_layer->fs.backing_store = NULL;
return FALSE;
}
static gboolean
undo_pop_fs_to_layer (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer fsu_ptr)
{
FStoLayerUndo *fsu;
fsu = (FStoLayerUndo *) fsu_ptr;
switch (state)
{
case 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 (gimage, fsu->floating_layer);
gimage->floating_sel = fsu->floating_layer;
/* restore the contents of the drawable */
floating_sel_store (fsu->floating_layer,
GIMP_DRAWABLE (fsu->floating_layer)->offset_x,
GIMP_DRAWABLE (fsu->floating_layer)->offset_y,
GIMP_DRAWABLE (fsu->floating_layer)->width,
GIMP_DRAWABLE (fsu->floating_layer)->height);
fsu->floating_layer->fs.initial = TRUE;
/* clear the selection */
gimp_layer_invalidate_boundary (fsu->floating_layer);
/* Update the preview for the gimage and underlying drawable */
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (fsu->floating_layer));
break;
case REDO:
/* restore the contents of the drawable */
floating_sel_restore (fsu->floating_layer,
GIMP_DRAWABLE (fsu->floating_layer)->offset_x,
GIMP_DRAWABLE (fsu->floating_layer)->offset_y,
GIMP_DRAWABLE (fsu->floating_layer)->width,
GIMP_DRAWABLE (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_layer_invalidate_boundary (fsu->floating_layer);
/* update the pointers */
fsu->floating_layer->fs.drawable = NULL;
gimage->floating_sel = NULL;
/* Update the fs drawable */
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (fsu->floating_layer));
break;
}
gimp_image_floating_selection_changed (gimage);
return TRUE;
}
static void
undo_free_fs_to_layer (UndoState state,
UndoType type,
gpointer fsu_ptr)
{
FStoLayerUndo *fsu;
fsu = (FStoLayerUndo *) fsu_ptr;
if (state == UNDO)
{
tile_manager_destroy (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 (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_fs_rigor (UndoState, UndoType, gpointer);
gboolean
undo_push_fs_rigor (GimpImage *gimage,
gint layer_ID)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (gint32),
FS_RIGOR_UNDO, FALSE)))
{
new->data = g_new (gint32, 1);
new->pop_func = undo_pop_fs_rigor;
new->free_func = undo_free_fs_rigor;
*((gint32 *) new->data) = layer_ID;
return TRUE;
}
else
return FALSE;
}
static gboolean
undo_pop_fs_rigor (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer layer_ptr)
{
gint32 layer_ID;
GimpLayer *floating_layer;
layer_ID = *((gint32 *) layer_ptr);
if ((floating_layer = (GimpLayer *) gimp_item_get_by_ID (gimage->gimp, layer_ID)) == NULL)
return FALSE;
if (! gimp_layer_is_floating_sel (floating_layer))
return FALSE;
switch (state)
{
case UNDO:
/* restore the contents of drawable the floating layer is attached to */
if (floating_layer->fs.initial == FALSE)
floating_sel_restore (floating_layer,
GIMP_DRAWABLE (floating_layer)->offset_x,
GIMP_DRAWABLE (floating_layer)->offset_y,
GIMP_DRAWABLE (floating_layer)->width,
GIMP_DRAWABLE (floating_layer)->height);
floating_layer->fs.initial = TRUE;
break;
case REDO:
/* store the affected area from the drawable in the backing store */
floating_sel_store (floating_layer,
GIMP_DRAWABLE (floating_layer)->offset_x,
GIMP_DRAWABLE (floating_layer)->offset_y,
GIMP_DRAWABLE (floating_layer)->width,
GIMP_DRAWABLE (floating_layer)->height);
floating_layer->fs.initial = TRUE;
break;
}
gimp_image_floating_selection_changed (gimage);
return TRUE;
}
static void
undo_free_fs_rigor (UndoState state,
UndoType type,
gpointer layer_ptr)
{
g_free (layer_ptr);
}
/***********************************/
/* Floating Selection Relax Undo */
static gboolean undo_pop_fs_relax (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_fs_relax (UndoState, UndoType, gpointer);
gboolean
undo_push_fs_relax (GimpImage *gimage,
gint32 layer_ID)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (gint32),
FS_RELAX_UNDO, FALSE)))
{
new->data = g_new (gint32, 1);
new->pop_func = undo_pop_fs_relax;
new->free_func = undo_free_fs_relax;
*((gint32 *) new->data) = layer_ID;
return TRUE;
}
else
return FALSE;
}
static gboolean
undo_pop_fs_relax (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer layer_ptr)
{
gint32 layer_ID;
GimpLayer *floating_layer;
layer_ID = *((gint32 *) layer_ptr);
if ((floating_layer = (GimpLayer *) gimp_item_get_by_ID (gimage->gimp, layer_ID)) == NULL)
return FALSE;
if (! gimp_layer_is_floating_sel (floating_layer))
return FALSE;
switch (state)
{
case UNDO:
/* store the affected area from the drawable in the backing store */
floating_sel_store (floating_layer,
GIMP_DRAWABLE (floating_layer)->offset_x,
GIMP_DRAWABLE (floating_layer)->offset_y,
GIMP_DRAWABLE (floating_layer)->width,
GIMP_DRAWABLE (floating_layer)->height);
floating_layer->fs.initial = TRUE;
break;
case REDO:
/* restore the contents of drawable the floating layer is attached to */
if (floating_layer->fs.initial == FALSE)
floating_sel_restore (floating_layer,
GIMP_DRAWABLE (floating_layer)->offset_x,
GIMP_DRAWABLE (floating_layer)->offset_y,
GIMP_DRAWABLE (floating_layer)->width,
GIMP_DRAWABLE (floating_layer)->height);
floating_layer->fs.initial = TRUE;
break;
}
gimp_image_floating_selection_changed (gimage);
return TRUE;
}
static void
undo_free_fs_relax (UndoState state,
UndoType type,
gpointer layer_ptr)
{
g_free (layer_ptr);
}
/********************/
/* Transform Undo */
typedef struct _TransformUndo TransformUndo;
struct _TransformUndo
{
gint tool_ID;
GType tool_type;
TransInfo trans_info;
TileManager *original;
gpointer path_undo;
};
static gboolean undo_pop_transform (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_transform (UndoState, UndoType, gpointer);
gboolean
undo_push_transform (GimpImage *gimage,
gint tool_ID,
GType tool_type,
gdouble *trans_info,
TileManager *original,
GSList *path_undo)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (TransformUndo),
TRANSFORM_UNDO, FALSE)))
{
TransformUndo *tu;
gint i;
tu = g_new0 (TransformUndo, 1);
new->data = tu;
new->pop_func = undo_pop_transform;
new->free_func = undo_free_transform;
tu->tool_ID = tool_ID;
tu->tool_type = tool_type;
for (i = 0; i < TRAN_INFO_SIZE; i++)
tu->trans_info[i] = trans_info[i];
tu->original = original;
tu->path_undo = path_undo;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_transform (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer tu_ptr)
{
GimpTool *active_tool;
active_tool = tool_manager_get_active (gimage->gimp);
if (GIMP_IS_TRANSFORM_TOOL (active_tool))
{
GimpTransformTool *tt;
TransformUndo *tu;
tt = GIMP_TRANSFORM_TOOL (active_tool);
tu = (TransformUndo *) tu_ptr;
path_transform_do_undo (gimage, tu->path_undo);
/* only pop if the active tool is the tool that pushed this undo */
if (tu->tool_ID == active_tool->ID)
{
TileManager *temp;
gdouble d;
gint i;
/* swap the transformation information arrays */
for (i = 0; i < TRAN_INFO_SIZE; i++)
{
d = tu->trans_info[i];
tu->trans_info[i] = tt->trans_info[i];
tt->trans_info[i] = d;
}
/* swap the original buffer--the source buffer for repeated transforms
*/
temp = tu->original;
tu->original = tt->original;
tt->original = temp;
/* If we're re-implementing the first transform, reactivate tool */
if (state == REDO && tt->original)
{
gimp_tool_control_activate(active_tool->control);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tt));
}
}
}
return TRUE;
}
static void
undo_free_transform (UndoState state,
UndoType type,
gpointer tu_ptr)
{
TransformUndo * tu;
tu = (TransformUndo *) tu_ptr;
if (tu->original)
tile_manager_destroy (tu->original);
path_transform_free_undo (tu->path_undo);
g_free (tu);
}
/****************/
/* Paint Undo */
typedef struct _PaintUndo PaintUndo;
struct _PaintUndo
{
gint core_ID;
GType core_type;
GimpCoords last_coords;
};
static gboolean undo_pop_paint (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_paint (UndoState, UndoType, gpointer);
gboolean
undo_push_paint (GimpImage *gimage,
gint core_ID,
GType core_type,
GimpCoords *last_coords)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (PaintUndo),
PAINT_UNDO, FALSE)))
{
PaintUndo *pu;
pu = g_new0 (PaintUndo, 1);
new->data = pu;
new->pop_func = undo_pop_paint;
new->free_func = undo_free_paint;
pu->core_ID = core_ID;
pu->core_type = core_type;
pu->last_coords = *last_coords;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_paint (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer pu_ptr)
{
GimpTool *active_tool;
active_tool = tool_manager_get_active (gimage->gimp);
if (GIMP_IS_PAINT_TOOL (active_tool))
{
GimpPaintTool *pt;
PaintUndo *pu;
pt = GIMP_PAINT_TOOL (active_tool);
pu = (PaintUndo *) pu_ptr;
/* only pop if the active paint core is the one that pushed this undo */
if (pu->core_ID == pt->core->ID)
{
GimpCoords tmp_coords;
/* swap the paint core information */
tmp_coords = pt->core->last_coords;
pt->core->last_coords = pu->last_coords;
pu->last_coords = tmp_coords;
}
}
return TRUE;
}
static void
undo_free_paint (UndoState state,
UndoType type,
gpointer pu_ptr)
{
PaintUndo *pu;
pu = (PaintUndo *) pu_ptr;
g_free (pu);
}
/*******************/
/* Parasite Undo */
typedef struct _ParasiteUndo ParasiteUndo;
struct _ParasiteUndo
{
GimpImage *gimage;
GimpItem *item;
GimpParasite *parasite;
gchar *name;
};
static gboolean undo_pop_parasite (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_parasite (UndoState, UndoType, gpointer);
gboolean
undo_push_image_parasite (GimpImage *gimage,
gpointer parasite)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ParasiteUndo),
PARASITE_ATTACH_UNDO, TRUE)))
{
ParasiteUndo *pu;
pu = g_new0 (ParasiteUndo, 1);
new->data = pu;
new->pop_func = undo_pop_parasite;
new->free_func = undo_free_parasite;
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
undo_push_image_parasite_remove (GimpImage *gimage,
const gchar *name)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ParasiteUndo),
PARASITE_REMOVE_UNDO, TRUE)))
{
ParasiteUndo *pu;
pu = g_new0 (ParasiteUndo, 1);
new->data = pu;
new->pop_func = undo_pop_parasite;
new->free_func = undo_free_parasite;
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
undo_push_item_parasite (GimpImage *gimage,
GimpItem *item,
gpointer parasite)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ParasiteUndo),
PARASITE_ATTACH_UNDO, TRUE)))
{
ParasiteUndo *pu;
pu = g_new0 (ParasiteUndo, 1);
new->data = pu;
new->pop_func = undo_pop_parasite;
new->free_func = undo_free_parasite;
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
undo_push_item_parasite_remove (GimpImage *gimage,
GimpItem *item,
const gchar *name)
{
Undo *new;
if ((new = undo_push (gimage, sizeof (ParasiteUndo),
PARASITE_REMOVE_UNDO, TRUE)))
{
ParasiteUndo *pu;
pu = g_new0 (ParasiteUndo, 1);
new->data = pu;
new->pop_func = undo_pop_parasite;
new->free_func = undo_free_parasite;
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 (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
ParasiteUndo *data;
GimpParasite *tmp;
data = data_ptr;
tmp = data->parasite;
if (data->gimage)
{
data->parasite =
gimp_parasite_copy (gimp_image_parasite_find (gimage, data->name));
if (tmp)
gimp_parasite_list_add (data->gimage->parasites, tmp);
else
gimp_parasite_list_remove (data->gimage->parasites, data->name);
}
else if (data->item)
{
data->parasite =
gimp_parasite_copy (gimp_item_parasite_find (data->item,
data->name));
if (tmp)
gimp_parasite_list_add (data->item->parasites, tmp);
else
gimp_parasite_list_remove (data->item->parasites, data->name);
}
else
{
data->parasite = gimp_parasite_copy (gimp_parasite_find (gimage->gimp,
data->name));
if (tmp)
gimp_parasite_attach (gimage->gimp, tmp);
else
gimp_parasite_detach (gimage->gimp, data->name);
}
if (tmp)
gimp_parasite_free (tmp);
return TRUE;
}
static void
undo_free_parasite (UndoState state,
UndoType type,
gpointer data_ptr)
{
ParasiteUndo *data;
data = data_ptr;
if (data->parasite)
gimp_parasite_free (data->parasite);
if (data->name)
g_free (data->name);
g_free (data_ptr);
}
/******************************************************************************/
/* Something for which programmer is too lazy to write an undo function for */
static gboolean undo_pop_cantundo (GimpImage *,
UndoState, UndoType, gpointer);
static void undo_free_cantundo (UndoState, UndoType, gpointer);
gboolean
undo_push_cantundo (GimpImage *gimage,
const gchar *action)
{
Undo *new;
/* 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 = undo_push (gimage, 0, CANT_UNDO, TRUE)))
{
new->data = (gpointer) action;
new->pop_func = undo_pop_cantundo;
new->free_func = undo_free_cantundo;
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_cantundo (GimpImage *gimage,
UndoState state,
UndoType type,
gpointer data_ptr)
{
gchar *action = data_ptr;
switch (state)
{
case UNDO:
g_message (_("Can't undo %s"), action);
break;
case REDO:
break;
}
return TRUE;
}
static void
undo_free_cantundo (UndoState state,
UndoType type,
gpointer data_ptr)
{
/* nothing to free */
}
static struct undo_name_t
{
UndoType type;
const gchar *name;
}
undo_name[] =
{
{ NO_UNDO_GROUP, N_("<<invalid>>") },
{ IMAGE_SCALE_UNDO_GROUP, N_("Scale Image") },
{ IMAGE_RESIZE_UNDO_GROUP, N_("Resize Image") },
{ IMAGE_CONVERT_UNDO_GROUP, N_("Convert Image") },
{ IMAGE_CROP_UNDO_GROUP, N_("Crop Image") },
{ IMAGE_LAYERS_MERGE_UNDO_GROUP, N_("Merge Layers") },
{ IMAGE_QMASK_UNDO_GROUP, N_("QuickMask") },
{ IMAGE_GUIDE_UNDO_GROUP, N_("Guide") },
{ LAYER_PROPERTIES_UNDO_GROUP, N_("Layer Properties") },
{ LAYER_SCALE_UNDO_GROUP, N_("Scale Layer") },
{ LAYER_RESIZE_UNDO_GROUP, N_("Resize Layer") },
{ LAYER_DISPLACE_UNDO_GROUP, N_("Move Layer") },
{ LAYER_APPLY_MASK_UNDO_GROUP, N_("Apply Layer Mask") },
{ LAYER_LINKED_UNDO_GROUP, N_("Linked Layer") },
{ FS_FLOAT_UNDO_GROUP, N_("Float Selection") },
{ FS_ANCHOR_UNDO_GROUP, N_("Anchor Floating Selection") },
{ EDIT_PASTE_UNDO_GROUP, N_("Paste") },
{ EDIT_CUT_UNDO_GROUP, N_("Cut") },
{ TEXT_UNDO_GROUP, N_("Text") },
{ TRANSFORM_UNDO_GROUP, N_("Transform") },
{ PAINT_UNDO_GROUP, N_("Paint") },
{ PARASITE_ATTACH_UNDO_GROUP, N_("Attach Parasite") },
{ PARASITE_REMOVE_UNDO_GROUP, N_("Remove Parasite") },
{ MISC_UNDO_GROUP, N_("Plug-In") },
{ IMAGE_UNDO, N_("Image") },
{ IMAGE_MOD_UNDO, N_("Image Mod") },
{ IMAGE_TYPE_UNDO, N_("Image Type") },
{ IMAGE_SIZE_UNDO, N_("Image Size") },
{ IMAGE_RESOLUTION_UNDO, N_("Resolution Change") },
{ IMAGE_QMASK_UNDO, N_("QuickMask") },
{ IMAGE_GUIDE_UNDO, N_("Guide") },
{ MASK_UNDO, N_("Selection Mask") },
{ ITEM_RENAME_UNDO, N_("Rename Item") },
{ LAYER_ADD_UNDO, N_("New Layer") },
{ LAYER_REMOVE_UNDO, N_("Delete Layer") },
{ LAYER_MOD_UNDO, N_("Layer Mod") },
{ LAYER_MASK_ADD_UNDO, N_("Add Layer Mask") },
{ LAYER_MASK_REMOVE_UNDO, N_("Delete Layer Mask") },
{ LAYER_REPOSITION_UNDO, N_("Layer Reposition") },
{ LAYER_DISPLACE_UNDO, N_("Layer Move") },
{ CHANNEL_ADD_UNDO, N_("New Channel") },
{ CHANNEL_REMOVE_UNDO, N_("Delete Channel") },
{ CHANNEL_MOD_UNDO, N_("Channel Mod") },
{ CHANNEL_REPOSITION_UNDO, N_("Channel Reposition") },
{ VECTORS_ADD_UNDO, N_("New Vectors") },
{ VECTORS_REMOVE_UNDO, N_("Delete Vectors") },
{ VECTORS_MOD_UNDO, N_("Vectors Mod") },
{ VECTORS_REPOSITION_UNDO, N_("Vectors Reposition") },
{ FS_TO_LAYER_UNDO, N_("FS to Layer") },
{ FS_RIGOR_UNDO, N_("FS Rigor") },
{ FS_RELAX_UNDO, N_("FS Relax") },
{ TRANSFORM_UNDO, N_("Transform") },
{ PAINT_UNDO, N_("Paint") },
{ PARASITE_ATTACH_UNDO, N_("Attach Parasite") },
{ PARASITE_REMOVE_UNDO, N_("Remove Parasite") },
{ CANT_UNDO, "EEK: can't undo" }
};
static const gchar *
undo_type_to_name (UndoType type)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (undo_name); i++)
if (undo_name[i].type == type)
return gettext (undo_name[i].name);
/* no name found */
return "";
}
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