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Gimp/app/core/gimpimageundo.c
Jehan 4a30f431fd app: work with a GimpPalette rather than a colormap. 
We historically have both the colormap and palette concept in core GIMP,
though they are actually kinda the same concept, except that with
"colormap" we work with an array of raw data and it's a lot less
color-aware. It is still much more efficient in some specific cases,
such as when converting the image (we can then convert the whole palette
as a single buffer, because the image palette is space-restricted
anyway), when storing undo data or when storing/loading in XCF.

But for all the rest, let's use gimp_image_get_colormap_palette() and
work with the GimpPalette API.
2024-02-11 23:28:03 +01:00

532 lines
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/* GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <cairo.h>
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "core-types.h"
#include "gimp-memsize.h"
#include "gimpdrawable.h"
#include "gimpgrid.h"
#include "gimpimage.h"
#include "gimpimage-color-profile.h"
#include "gimpimage-colormap.h"
#include "gimpimage-grid.h"
#include "gimpimage-metadata.h"
#include "gimpimage-private.h"
#include "gimpimageundo.h"
enum
{
PROP_0,
PROP_PREVIOUS_ORIGIN_X,
PROP_PREVIOUS_ORIGIN_Y,
PROP_PREVIOUS_WIDTH,
PROP_PREVIOUS_HEIGHT,
PROP_GRID,
PROP_PARASITE_NAME
};
static void gimp_image_undo_constructed (GObject *object);
static void gimp_image_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_image_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 gimp_image_undo_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_image_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void gimp_image_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode);
G_DEFINE_TYPE (GimpImageUndo, gimp_image_undo, GIMP_TYPE_UNDO)
#define parent_class gimp_image_undo_parent_class
static void
gimp_image_undo_class_init (GimpImageUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass);
object_class->constructed = gimp_image_undo_constructed;
object_class->set_property = gimp_image_undo_set_property;
object_class->get_property = gimp_image_undo_get_property;
gimp_object_class->get_memsize = gimp_image_undo_get_memsize;
undo_class->pop = gimp_image_undo_pop;
undo_class->free = gimp_image_undo_free;
g_object_class_install_property (object_class, PROP_PREVIOUS_ORIGIN_X,
g_param_spec_int ("previous-origin-x",
NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE,
0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_PREVIOUS_ORIGIN_Y,
g_param_spec_int ("previous-origin-y",
NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE,
0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_PREVIOUS_WIDTH,
g_param_spec_int ("previous-width",
NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE,
0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_PREVIOUS_HEIGHT,
g_param_spec_int ("previous-height",
NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE,
0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_GRID,
g_param_spec_object ("grid", NULL, NULL,
GIMP_TYPE_GRID,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_PARASITE_NAME,
g_param_spec_string ("parasite-name",
NULL, NULL,
NULL,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_image_undo_init (GimpImageUndo *undo)
{
}
static void
gimp_image_undo_constructed (GObject *object)
{
GimpImageUndo *image_undo = GIMP_IMAGE_UNDO (object);
GimpImage *image;
G_OBJECT_CLASS (parent_class)->constructed (object);
image = GIMP_UNDO (object)->image;
switch (GIMP_UNDO (object)->undo_type)
{
case GIMP_UNDO_IMAGE_TYPE:
image_undo->base_type = gimp_image_get_base_type (image);
break;
case GIMP_UNDO_IMAGE_PRECISION:
image_undo->precision = gimp_image_get_precision (image);
break;
case GIMP_UNDO_IMAGE_SIZE:
image_undo->width = gimp_image_get_width (image);
image_undo->height = gimp_image_get_height (image);
break;
case GIMP_UNDO_IMAGE_RESOLUTION:
gimp_image_get_resolution (image,
&image_undo->xresolution,
&image_undo->yresolution);
image_undo->resolution_unit = gimp_image_get_unit (image);
break;
case GIMP_UNDO_IMAGE_GRID:
gimp_assert (GIMP_IS_GRID (image_undo->grid));
break;
case GIMP_UNDO_IMAGE_COLORMAP:
image_undo->colormap = _gimp_image_get_colormap (image, &image_undo->num_colors);
break;
case GIMP_UNDO_IMAGE_HIDDEN_PROFILE:
g_set_object (&image_undo->hidden_profile,
_gimp_image_get_hidden_profile (image));
break;
case GIMP_UNDO_IMAGE_METADATA:
image_undo->metadata =
gimp_metadata_duplicate (gimp_image_get_metadata (image));
break;
case GIMP_UNDO_PARASITE_ATTACH:
case GIMP_UNDO_PARASITE_REMOVE:
gimp_assert (image_undo->parasite_name != NULL);
image_undo->parasite = gimp_parasite_copy
(gimp_image_parasite_find (image, image_undo->parasite_name));
break;
default:
g_return_if_reached ();
}
}
static void
gimp_image_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpImageUndo *image_undo = GIMP_IMAGE_UNDO (object);
switch (property_id)
{
case PROP_PREVIOUS_ORIGIN_X:
image_undo->previous_origin_x = g_value_get_int (value);
break;
case PROP_PREVIOUS_ORIGIN_Y:
image_undo->previous_origin_y = g_value_get_int (value);
break;
case PROP_PREVIOUS_WIDTH:
image_undo->previous_width = g_value_get_int (value);
break;
case PROP_PREVIOUS_HEIGHT:
image_undo->previous_height = g_value_get_int (value);
break;
case PROP_GRID:
{
GimpGrid *grid = g_value_get_object (value);
if (grid)
image_undo->grid = gimp_config_duplicate (GIMP_CONFIG (grid));
}
break;
case PROP_PARASITE_NAME:
image_undo->parasite_name = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_image_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpImageUndo *image_undo = GIMP_IMAGE_UNDO (object);
switch (property_id)
{
case PROP_PREVIOUS_ORIGIN_X:
g_value_set_int (value, image_undo->previous_origin_x);
break;
case PROP_PREVIOUS_ORIGIN_Y:
g_value_set_int (value, image_undo->previous_origin_y);
break;
case PROP_PREVIOUS_WIDTH:
g_value_set_int (value, image_undo->previous_width);
break;
case PROP_PREVIOUS_HEIGHT:
g_value_set_int (value, image_undo->previous_height);
break;
case PROP_GRID:
g_value_set_object (value, image_undo->grid);
break;
case PROP_PARASITE_NAME:
g_value_set_string (value, image_undo->parasite_name);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint64
gimp_image_undo_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpImageUndo *image_undo = GIMP_IMAGE_UNDO (object);
gint64 memsize = 0;
if (image_undo->colormap)
memsize += GIMP_IMAGE_COLORMAP_SIZE;
if (image_undo->metadata)
memsize += gimp_g_object_get_memsize (G_OBJECT (image_undo->metadata));
memsize += gimp_object_get_memsize (GIMP_OBJECT (image_undo->grid),
gui_size);
memsize += gimp_string_get_memsize (image_undo->parasite_name);
memsize += gimp_parasite_get_memsize (image_undo->parasite, gui_size);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
gimp_image_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpImageUndo *image_undo = GIMP_IMAGE_UNDO (undo);
GimpImage *image = undo->image;
GimpImagePrivate *private = GIMP_IMAGE_GET_PRIVATE (image);
GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
switch (undo->undo_type)
{
case GIMP_UNDO_IMAGE_TYPE:
{
GimpImageBaseType base_type;
base_type = image_undo->base_type;
image_undo->base_type = gimp_image_get_base_type (image);
g_object_set (image, "base-type", base_type, NULL);
gimp_image_colormap_changed (image, -1);
if (image_undo->base_type != gimp_image_get_base_type (image))
{
if ((image_undo->base_type == GIMP_GRAY) ||
(gimp_image_get_base_type (image) == GIMP_GRAY))
{
/* in case there was no profile undo, we need to emit
* profile-changed anyway
*/
gimp_color_managed_profile_changed (GIMP_COLOR_MANAGED (image));
}
accum->mode_changed = TRUE;
}
}
break;
case GIMP_UNDO_IMAGE_PRECISION:
{
GimpPrecision precision;
precision = image_undo->precision;
image_undo->precision = gimp_image_get_precision (image);
g_object_set (image, "precision", precision, NULL);
if (image_undo->precision != gimp_image_get_precision (image))
accum->precision_changed = TRUE;
}
break;
case GIMP_UNDO_IMAGE_SIZE:
{
gint width;
gint height;
gint previous_origin_x;
gint previous_origin_y;
gint previous_width;
gint previous_height;
width = image_undo->width;
height = image_undo->height;
previous_origin_x = image_undo->previous_origin_x;
previous_origin_y = image_undo->previous_origin_y;
previous_width = image_undo->previous_width;
previous_height = image_undo->previous_height;
/* Transform to a redo */
image_undo->width = gimp_image_get_width (image);
image_undo->height = gimp_image_get_height (image);
image_undo->previous_origin_x = -previous_origin_x;
image_undo->previous_origin_y = -previous_origin_y;
image_undo->previous_width = width;
image_undo->previous_height = height;
g_object_set (image,
"width", width,
"height", height,
NULL);
gimp_drawable_invalidate_boundary
(GIMP_DRAWABLE (gimp_image_get_mask (image)));
if (gimp_image_get_width (image) != image_undo->width ||
gimp_image_get_height (image) != image_undo->height)
{
accum->size_changed = TRUE;
accum->previous_origin_x = previous_origin_x;
accum->previous_origin_y = previous_origin_y;
accum->previous_width = previous_width;
accum->previous_height = previous_height;
}
}
break;
case GIMP_UNDO_IMAGE_RESOLUTION:
{
gdouble xres;
gdouble yres;
gimp_image_get_resolution (image, &xres, &yres);
if (ABS (image_undo->xresolution - xres) >= 1e-5 ||
ABS (image_undo->yresolution - yres) >= 1e-5)
{
private->xresolution = image_undo->xresolution;
private->yresolution = image_undo->yresolution;
image_undo->xresolution = xres;
image_undo->yresolution = yres;
accum->resolution_changed = TRUE;
}
}
if (image_undo->resolution_unit != gimp_image_get_unit (image))
{
GimpUnit unit;
unit = gimp_image_get_unit (image);
private->resolution_unit = image_undo->resolution_unit;
image_undo->resolution_unit = unit;
accum->unit_changed = TRUE;
}
break;
case GIMP_UNDO_IMAGE_GRID:
{
GimpGrid *grid;
grid = gimp_config_duplicate (GIMP_CONFIG (gimp_image_get_grid (image)));
gimp_image_set_grid (image, image_undo->grid, FALSE);
g_object_unref (image_undo->grid);
image_undo->grid = grid;
}
break;
case GIMP_UNDO_IMAGE_COLORMAP:
{
guchar *colormap;
gint num_colors;
colormap = _gimp_image_get_colormap (image, &num_colors);
if (image_undo->colormap)
_gimp_image_set_colormap (image, image_undo->colormap,
image_undo->num_colors, FALSE);
else
gimp_image_unset_colormap (image, FALSE);
if (image_undo->colormap)
g_free (image_undo->colormap);
image_undo->num_colors = num_colors;
image_undo->colormap = colormap;
}
break;
case GIMP_UNDO_IMAGE_HIDDEN_PROFILE:
{
GimpColorProfile *hidden_profile = NULL;
g_set_object (&hidden_profile, _gimp_image_get_hidden_profile (image));
_gimp_image_set_hidden_profile (image, image_undo->hidden_profile,
FALSE);
image_undo->hidden_profile = hidden_profile;
}
break;
case GIMP_UNDO_IMAGE_METADATA:
{
GimpMetadata *metadata;
metadata = gimp_metadata_duplicate (gimp_image_get_metadata (image));
gimp_image_set_metadata (image, image_undo->metadata, FALSE);
if (image_undo->metadata)
g_object_unref (image_undo->metadata);
image_undo->metadata = metadata;
}
break;
case GIMP_UNDO_PARASITE_ATTACH:
case GIMP_UNDO_PARASITE_REMOVE:
{
GimpParasite *parasite = image_undo->parasite;
image_undo->parasite = gimp_parasite_copy
(gimp_image_parasite_find (image, image_undo->parasite_name));
if (parasite)
gimp_image_parasite_attach (image, parasite, FALSE);
else
gimp_image_parasite_detach (image, image_undo->parasite_name, FALSE);
if (parasite)
gimp_parasite_free (parasite);
}
break;
default:
g_return_if_reached ();
}
}
static void
gimp_image_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
GimpImageUndo *image_undo = GIMP_IMAGE_UNDO (undo);
g_clear_object (&image_undo->grid);
g_clear_pointer (&image_undo->colormap, g_free);
g_clear_object (&image_undo->hidden_profile);
g_clear_object (&image_undo->metadata);
g_clear_pointer (&image_undo->parasite_name, g_free);
g_clear_pointer (&image_undo->parasite, gimp_parasite_free);
GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}
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