/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 .
*/
#include "config.h"
#include
#include
#include
#include
#include
#include "libpikabase/pikabase.h"
#include "libpikacolor/pikacolor.h"
#include "core/core-types.h"
#include "config/pikacoreconfig.h"
#include "gegl/pika-babl.h"
#include "gegl/pika-gegl-tile-compat.h"
#include "core/pika.h"
#include "core/pikacontainer.h"
#include "core/pikadrawable-private.h" /* eek */
#include "core/pikagrid.h"
#include "core/pikagrouplayer.h"
#include "core/pikaimage.h"
#include "core/pikaimage-color-profile.h"
#include "core/pikaimage-colormap.h"
#include "core/pikaimage-grid.h"
#include "core/pikaimage-guides.h"
#include "core/pikaimage-metadata.h"
#include "core/pikaimage-private.h"
#include "core/pikaimage-sample-points.h"
#include "core/pikaimage-symmetry.h"
#include "core/pikaimage-undo.h"
#include "core/pikaitemlist.h"
#include "core/pikaitemstack.h"
#include "core/pikalayer-floating-selection.h"
#include "core/pikalayer-new.h"
#include "core/pikalayermask.h"
#include "core/pikaparasitelist.h"
#include "core/pikaprogress.h"
#include "core/pikaselection.h"
#include "core/pikasymmetry.h"
#include "core/pikatemplate.h"
#include "operations/layer-modes/pika-layer-modes.h"
#include "text/pikatextlayer.h"
#include "text/pikatextlayer-xcf.h"
#include "vectors/pikaanchor.h"
#include "vectors/pikastroke.h"
#include "vectors/pikabezierstroke.h"
#include "vectors/pikavectors.h"
#include "vectors/pikavectors-compat.h"
#include "xcf-private.h"
#include "xcf-load.h"
#include "xcf-read.h"
#include "xcf-seek.h"
#include "xcf-utils.h"
#include "pika-log.h"
#include "pika-intl.h"
#define MAX_XCF_PARASITE_DATA_LEN (256L * 1024 * 1024)
/* #define PIKA_XCF_PATH_DEBUG */
static void xcf_load_add_masks (PikaImage *image);
static gboolean xcf_load_image_props (XcfInfo *info,
PikaImage *image);
static gboolean xcf_load_layer_props (XcfInfo *info,
PikaImage *image,
PikaLayer **layer,
GList **item_path,
gboolean *apply_mask,
gboolean *edit_mask,
gboolean *show_mask,
guint32 *text_layer_flags,
guint32 *group_layer_flags);
static gboolean xcf_check_layer_props (XcfInfo *info,
GList **item_path,
gboolean *is_group_layer,
gboolean *is_text_layer);
static gboolean xcf_load_channel_props (XcfInfo *info,
PikaImage *image,
PikaChannel **channel);
static gboolean xcf_load_vectors_props (XcfInfo *info,
PikaImage *image,
PikaVectors **vectors);
static gboolean xcf_load_prop (XcfInfo *info,
PropType *prop_type,
guint32 *prop_size);
static PikaLayer * xcf_load_layer (XcfInfo *info,
PikaImage *image,
GList **item_path);
static PikaChannel * xcf_load_channel (XcfInfo *info,
PikaImage *image);
static PikaVectors * xcf_load_vectors (XcfInfo *info,
PikaImage *image);
static PikaLayerMask * xcf_load_layer_mask (XcfInfo *info,
PikaImage *image);
static gboolean xcf_load_buffer (XcfInfo *info,
GeglBuffer *buffer);
static gboolean xcf_load_level (XcfInfo *info,
GeglBuffer *buffer);
static gboolean xcf_load_tile (XcfInfo *info,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
const Babl *format);
static gboolean xcf_load_tile_rle (XcfInfo *info,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
const Babl *format,
gint data_length);
static gboolean xcf_load_tile_zlib (XcfInfo *info,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
const Babl *format,
gint data_length);
static PikaParasite * xcf_load_parasite (XcfInfo *info);
static gboolean xcf_load_old_paths (XcfInfo *info,
PikaImage *image);
static gboolean xcf_load_old_path (XcfInfo *info,
PikaImage *image);
static gboolean xcf_load_old_vectors (XcfInfo *info,
PikaImage *image);
static gboolean xcf_load_old_vector (XcfInfo *info,
PikaImage *image);
static gboolean xcf_skip_unknown_prop (XcfInfo *info,
gsize size);
static gboolean xcf_item_path_is_parent (GList *path,
GList *parent_path);
static void xcf_fix_item_path (PikaLayer *layer,
GList **path,
GList *broken_paths);
#define xcf_progress_update(info) G_STMT_START \
{ \
if (info->progress) \
pika_progress_pulse (info->progress); \
} G_STMT_END
PikaImage *
xcf_load_image (Pika *pika,
XcfInfo *info,
GError **error)
{
PikaImage *image = NULL;
const PikaParasite *parasite;
gboolean has_metadata = FALSE;
goffset saved_pos;
goffset offset;
gint width;
gint height;
gint image_type;
PikaPrecision precision = PIKA_PRECISION_U8_NON_LINEAR;
gint num_successful_elements = 0;
gint n_broken_layers = 0;
gint n_broken_channels = 0;
gint n_broken_vectors = 0;
GList *broken_paths = NULL;
GList *group_layers = NULL;
GList *syms;
GList *iter;
/* read in the image width, height and type */
xcf_read_int32 (info, (guint32 *) &width, 1);
xcf_read_int32 (info, (guint32 *) &height, 1);
xcf_read_int32 (info, (guint32 *) &image_type, 1);
if (image_type < PIKA_RGB || image_type > PIKA_INDEXED)
goto hard_error;
/* Be lenient with corrupt image dimensions.
* Hopefully layer dimensions will be valid. */
if (width <= 0 || height <= 0 ||
width > PIKA_MAX_IMAGE_SIZE || height > PIKA_MAX_IMAGE_SIZE)
{
PIKA_LOG (XCF, "Invalid image size %d x %d, setting to 1x1.", width, height);
width = 1;
height = 1;
}
if (info->file_version >= 4)
{
gint p;
xcf_read_int32 (info, (guint32 *) &p, 1);
if (info->file_version == 4)
{
switch (p)
{
case 0: precision = PIKA_PRECISION_U8_NON_LINEAR; break;
case 1: precision = PIKA_PRECISION_U16_NON_LINEAR; break;
case 2: precision = PIKA_PRECISION_U32_LINEAR; break;
case 3: precision = PIKA_PRECISION_HALF_LINEAR; break;
case 4: precision = PIKA_PRECISION_FLOAT_LINEAR; break;
default:
goto hard_error;
}
}
else if (info->file_version == 5 ||
info->file_version == 6)
{
switch (p)
{
case 100: precision = PIKA_PRECISION_U8_LINEAR; break;
case 150: precision = PIKA_PRECISION_U8_NON_LINEAR; break;
case 200: precision = PIKA_PRECISION_U16_LINEAR; break;
case 250: precision = PIKA_PRECISION_U16_NON_LINEAR; break;
case 300: precision = PIKA_PRECISION_U32_LINEAR; break;
case 350: precision = PIKA_PRECISION_U32_NON_LINEAR; break;
case 400: precision = PIKA_PRECISION_HALF_LINEAR; break;
case 450: precision = PIKA_PRECISION_HALF_NON_LINEAR; break;
case 500: precision = PIKA_PRECISION_FLOAT_LINEAR; break;
case 550: precision = PIKA_PRECISION_FLOAT_NON_LINEAR; break;
default:
goto hard_error;
}
}
else
{
precision = p;
}
}
PIKA_LOG (XCF, "version=%d, width=%d, height=%d, image_type=%d, precision=%d",
info->file_version, width, height, image_type, precision);
if (! pika_babl_is_valid (image_type, precision))
{
pika_message_literal (pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
_("Invalid image mode and precision combination."));
goto hard_error;
}
image = pika_create_image (pika, width, height, image_type, precision,
FALSE);
pika_image_undo_disable (image);
xcf_progress_update (info);
/* read the image properties */
if (! xcf_load_image_props (info, image))
goto hard_error;
PIKA_LOG (XCF, "image props loaded");
/* Order matters for item sets. */
info->layer_sets = g_list_reverse (info->layer_sets);
info->channel_sets = g_list_reverse (info->channel_sets);
/* check for simulation intent parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
"image-simulation-intent");
if (parasite)
{
guint32 parasite_size;
const guint8 *intent;
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
intent = (const guint8 *) pika_parasite_get_data (parasite, ¶site_size);
if (parasite_size == 1)
{
if (*intent != PIKA_COLOR_RENDERING_INTENT_PERCEPTUAL &&
*intent != PIKA_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC &&
*intent != PIKA_COLOR_RENDERING_INTENT_SATURATION &&
*intent != PIKA_COLOR_RENDERING_INTENT_ABSOLUTE_COLORIMETRIC)
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"Unknown simulation rendering intent: %d",
*intent);
}
else
{
pika_image_set_simulation_intent (image,
(PikaColorRenderingIntent) *intent);
}
}
else
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"Invalid simulation intent data");
}
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
}
/* check for simulation bpc parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
"image-simulation-bpc");
if (parasite)
{
guint32 parasite_size;
const guint8 *bpc;
gboolean status = FALSE;
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
bpc = (const guint8 *) pika_parasite_get_data (parasite, ¶site_size);
if (parasite_size == 1)
{
if (*bpc)
status = TRUE;
pika_image_set_simulation_bpc (image, status);
}
else
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"Invalid simulation bpc data");
}
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
}
/* check for a PikaGrid parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
pika_grid_parasite_name ());
if (parasite)
{
PikaGrid *grid = pika_grid_from_parasite (parasite);
if (grid)
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
pika_image_set_grid (PIKA_IMAGE (image), grid, FALSE);
g_object_unref (grid);
}
}
/* check for a metadata parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
"pika-image-metadata");
if (parasite)
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
PikaMetadata *metadata = NULL;
gchar *meta_string;
guint32 parasite_data_size;
meta_string = (gchar *) pika_parasite_get_data (parasite, ¶site_data_size);
if (meta_string)
{
meta_string = g_strndup (meta_string, parasite_data_size);
metadata = pika_metadata_deserialize (meta_string);
g_free (meta_string);
}
if (metadata)
{
has_metadata = TRUE;
pika_image_set_metadata (image, metadata, FALSE);
g_object_unref (metadata);
}
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
}
/* check for symmetry parasites */
syms = pika_image_symmetry_list ();
for (iter = syms; iter; iter = g_list_next (iter))
{
GType type = (GType) iter->data;
gchar *parasite_name = pika_symmetry_parasite_name (type);
parasite = pika_image_parasite_find (image,
parasite_name);
g_free (parasite_name);
if (parasite)
{
PikaSymmetry *sym = pika_symmetry_from_parasite (parasite,
image,
type);
if (sym)
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
pika_image_symmetry_add (image, sym);
g_signal_emit_by_name (sym, "active-changed", NULL);
if (sym->active)
pika_image_set_active_symmetry (image, type);
}
}
}
g_list_free (syms);
/* migrate the old "exif-data" parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
"exif-data");
if (parasite)
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
if (has_metadata)
{
g_printerr ("xcf-load: inconsistent metadata discovered: XCF file "
"has both 'pika-image-metadata' and 'exif-data' "
"parasites, dropping old 'exif-data'\n");
}
else
{
PikaMetadata *metadata = pika_image_get_metadata (image);
GError *my_error = NULL;
const guchar *parasite_data;
guint32 parasite_data_size;
parasite_data = (const guchar *) pika_parasite_get_data (parasite, ¶site_data_size);
if (metadata)
g_object_ref (metadata);
else
metadata = pika_metadata_new ();
if (! pika_metadata_set_from_exif (metadata,
parasite_data, parasite_data_size,
&my_error))
{
pika_message (pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
_("Corrupt 'exif-data' parasite discovered.\n"
"Exif data could not be migrated: %s"),
my_error->message);
g_clear_error (&my_error);
}
else
{
pika_image_set_metadata (image, metadata, FALSE);
}
g_object_unref (metadata);
}
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
}
/* migrate the old "pika-metadata" parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
"pika-metadata");
if (parasite)
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
const gchar *xmp_data;
guint32 xmp_length;
xmp_data = (gchar *) pika_parasite_get_data (parasite, &xmp_length);
if (has_metadata)
{
g_printerr ("xcf-load: inconsistent metadata discovered: XCF file "
"has both 'pika-image-metadata' and 'pika-metadata' "
"parasites, dropping old 'pika-metadata'\n");
}
else if (xmp_length < 14 ||
strncmp (xmp_data, "PIKA_XMP_1", 10) != 0)
{
pika_message (pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
_("Corrupt 'pika-metadata' parasite discovered.\n"
"XMP data could not be migrated."));
}
else
{
PikaMetadata *metadata = pika_image_get_metadata (image);
GError *my_error = NULL;
if (metadata)
g_object_ref (metadata);
else
metadata = pika_metadata_new ();
if (! pika_metadata_set_from_xmp (metadata,
(const guint8 *) xmp_data + 10,
xmp_length - 10,
&my_error))
{
/* XMP metadata from 2.8.x or earlier can be really messed up.
* Let's make the message more user friendly so they will
* understand that we can't do anything about it.
* See issue #987. */
pika_message (pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
_("Corrupt XMP metadata saved by an older version of "
"PIKA could not be converted and will be ignored.\n"
"If you don't know what XMP is, you most likely don't "
"need it. Reported error: %s."),
my_error->message);
g_clear_error (&my_error);
}
else
{
pika_image_set_metadata (image, metadata, FALSE);
}
g_object_unref (metadata);
}
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
}
/* check for a pika-xcf-compatibility-mode parasite */
parasite = pika_image_parasite_find (PIKA_IMAGE (image),
"pika-xcf-compatibility-mode");
if (parasite)
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
/* just ditch it, it's unused but shouldn't be re-saved */
pika_parasite_list_remove (private->parasites,
pika_parasite_get_name (parasite));
}
xcf_progress_update (info);
while (TRUE)
{
PikaLayer *layer;
GList *item_path = NULL;
/* read in the offset of the next layer */
xcf_read_offset (info, &offset, 1);
/* if the offset is 0 then we are at the end
* of the layer list.
*/
if (offset == 0)
break;
/* save the current position as it is where the
* next layer offset is stored.
*/
saved_pos = info->cp;
if (offset < saved_pos)
{
PIKA_LOG (XCF, "Invalid layer offset: %" G_GOFFSET_FORMAT
" at offset: %" G_GOFFSET_FORMAT, offset, saved_pos);
goto error;
}
/* seek to the layer offset */
if (! xcf_seek_pos (info, offset, NULL))
goto error;
/* read in the layer */
layer = xcf_load_layer (info, image, &item_path);
if (! layer)
{
n_broken_layers++;
if (! xcf_seek_pos (info, saved_pos, NULL))
{
if (item_path)
g_list_free (item_path);
goto error;
}
/* Don't just stop at the first broken layer. Load as much as
* possible.
*/
if (! item_path)
{
PikaContainer *layers = pika_image_get_layers (image);
item_path = g_list_prepend (NULL,
GUINT_TO_POINTER (pika_container_get_n_children (layers)));
broken_paths = g_list_prepend (broken_paths, item_path);
}
continue;
}
if (broken_paths && item_path)
{
/* Item paths may be a problem when layers are missing. */
xcf_fix_item_path (layer, &item_path, broken_paths);
}
num_successful_elements++;
xcf_progress_update (info);
/* suspend layer-group size updates */
if (PIKA_IS_GROUP_LAYER (layer))
{
PikaGroupLayer *group = PIKA_GROUP_LAYER (layer);
group_layers = g_list_prepend (group_layers, group);
pika_group_layer_suspend_resize (group, FALSE);
}
/* add the layer to the image if its not the floating selection */
if (layer != info->floating_sel)
{
PikaContainer *layers = pika_image_get_layers (image);
PikaContainer *container;
PikaLayer *parent;
if (item_path)
{
if (info->floating_sel)
{
/* there is a floating selection, but it will get
* added after all layers are loaded, so toplevel
* layer indices are off-by-one. Adjust item paths
* accordingly:
*/
gint toplevel_index;
toplevel_index = GPOINTER_TO_UINT (item_path->data);
toplevel_index--;
item_path->data = GUINT_TO_POINTER (toplevel_index);
}
parent = PIKA_LAYER
(pika_item_stack_get_parent_by_path (PIKA_ITEM_STACK (layers),
item_path,
NULL));
container = pika_viewable_get_children (PIKA_VIEWABLE (parent));
g_list_free (item_path);
}
else
{
parent = NULL;
container = layers;
}
pika_image_add_layer (image, layer,
parent,
pika_container_get_n_children (container),
FALSE);
}
/* restore the saved position so we'll be ready to
* read the next offset.
*/
if (! xcf_seek_pos (info, saved_pos, NULL))
goto error;
}
/* resume layer-group size updates, in reverse order */
for (iter = group_layers; iter; iter = g_list_next (iter))
{
PikaGroupLayer *group = iter->data;
pika_group_layer_resume_resize (group, FALSE);
}
g_clear_pointer (&group_layers, g_list_free);
if (broken_paths)
{
g_list_free_full (broken_paths, (GDestroyNotify) g_list_free);
broken_paths = NULL;
}
while (TRUE)
{
PikaChannel *channel;
/* read in the offset of the next channel */
xcf_read_offset (info, &offset, 1);
/* if the offset is 0 then we are at the end
* of the channel list.
*/
if (offset == 0)
break;
/* save the current position as it is where the
* next channel offset is stored.
*/
saved_pos = info->cp;
if (offset < saved_pos)
{
PIKA_LOG (XCF, "Invalid channel offset: %" G_GOFFSET_FORMAT
" at offset: % "G_GOFFSET_FORMAT, offset, saved_pos);
goto error;
}
/* seek to the channel offset */
if (! xcf_seek_pos (info, offset, NULL))
goto error;
/* read in the channel */
channel = xcf_load_channel (info, image);
if (!channel)
{
n_broken_channels++;
PIKA_LOG (XCF, "Failed to load channel.");
if (! xcf_seek_pos (info, saved_pos, NULL))
goto error;
continue;
}
num_successful_elements++;
xcf_progress_update (info);
/* add the channel to the image if its not the selection */
if (channel != pika_image_get_mask (image))
pika_image_add_channel (image, channel,
NULL, /* FIXME tree */
pika_container_get_n_children (pika_image_get_channels (image)),
FALSE);
/* restore the saved position so we'll be ready to
* read the next offset.
*/
if (! xcf_seek_pos (info, saved_pos, NULL))
goto error;
}
if (n_broken_layers == 0 && n_broken_channels == 0)
xcf_load_add_masks (image);
if (info->floating_sel && info->floating_sel_drawable)
{
/* we didn't fix the loaded floating selection's format before
* because we didn't know if it needed the layer space
*/
if (PIKA_IS_LAYER (info->floating_sel_drawable) &&
pika_drawable_is_gray (PIKA_DRAWABLE (info->floating_sel)))
pika_layer_fix_format_space (info->floating_sel, TRUE, FALSE);
floating_sel_attach (info->floating_sel, info->floating_sel_drawable);
}
if (info->file_version >= 18)
{
while (TRUE)
{
PikaVectors *vectors;
/* read in the offset of the next path */
xcf_read_offset (info, &offset, 1);
/* if the offset is 0 then we are at the end
* of the path list.
*/
if (offset == 0)
break;
/* save the current position as it is where the
* next channel offset is stored.
*/
saved_pos = info->cp;
if (offset < saved_pos)
{
PIKA_LOG (XCF, "Invalid path offset: %" G_GOFFSET_FORMAT
" at offset: % "G_GOFFSET_FORMAT, offset, saved_pos);
goto error;
}
/* seek to the path offset */
if (! xcf_seek_pos (info, offset, NULL))
goto error;
/* read in the path */
vectors = xcf_load_vectors (info, image);
if (! vectors)
{
n_broken_vectors++;
PIKA_LOG (XCF, "Failed to load path.");
if (! xcf_seek_pos (info, saved_pos, NULL))
goto error;
continue;
}
num_successful_elements++;
xcf_progress_update (info);
pika_image_add_vectors (image, vectors,
NULL, /* can't be a tree */
pika_container_get_n_children (pika_image_get_vectors (image)),
FALSE);
/* restore the saved position so we'll be ready to
* read the next offset.
*/
if (! xcf_seek_pos (info, saved_pos, NULL))
goto error;
}
}
if (info->selected_layers)
{
pika_image_set_selected_layers (image, info->selected_layers);
g_clear_pointer (&info->selected_layers, g_list_free);
}
if (info->selected_channels)
pika_image_set_selected_channels (image, info->selected_channels);
if (info->selected_vectors)
pika_image_set_selected_vectors (image, info->selected_vectors);
/* We don't have linked items concept anymore. We transform formerly
* linked items into stored sets of named items instead.
*/
if (info->linked_layers)
{
PikaItemList *set;
set = pika_item_list_named_new (image, PIKA_TYPE_LAYER,
_("Linked Layers"),
info->linked_layers);
pika_image_store_item_set (image, set);
g_clear_pointer (&info->linked_layers, g_list_free);
}
if (info->linked_channels)
{
PikaItemList *set;
set = pika_item_list_named_new (image, PIKA_TYPE_CHANNEL,
_("Linked Channels"),
info->linked_channels);
pika_image_store_item_set (image, set);
g_clear_pointer (&info->linked_channels, g_list_free);
}
if (info->linked_paths)
{
/* It is kind of ugly but vectors are really implemented as
* exception in our XCF spec and building over it seems like a
* mistake. Since I'm seriously not sure this would be much of an
* issue, I'll let it as it for now.
* Note that it's still possible to multi-select paths. It's only
* not possible to store these selections.
*
* Only warn for more than 1 linked path. Less is kind of
* pointless and doesn't deserve worrying people for no reason.
*/
if (g_list_length (info->linked_paths) > 1)
g_printerr ("xcf: some paths were linked. "
"PIKA does not support linked paths since version 3.0.\n");
#if 0
PikaItemList *set;
set = pika_item_list_named_new (image, PIKA_TYPE_VECTORS,
_("Linked Paths"),
info->linked_paths);
pika_image_store_item_set (image, set);
#endif
g_clear_pointer (&info->linked_paths, g_list_free);
}
for (iter = g_list_last (info->layer_sets); iter; iter = iter->prev)
{
if (iter->data)
pika_image_store_item_set (image, iter->data);
}
g_list_free (info->layer_sets);
for (iter = g_list_last (info->channel_sets); iter; iter = iter->prev)
{
if (iter->data)
pika_image_store_item_set (image, iter->data);
}
g_list_free (info->channel_sets);
if (info->file)
pika_image_set_file (image, info->file);
if (info->tattoo_state > 0)
pika_image_set_tattoo_state (image, info->tattoo_state);
if (n_broken_layers > 0 || n_broken_channels > 0 || n_broken_vectors > 0)
goto error;
pika_image_undo_enable (image);
return image;
error:
if (num_successful_elements == 0)
goto hard_error;
g_clear_pointer (&group_layers, g_list_free);
if (broken_paths)
{
g_list_free_full (broken_paths, (GDestroyNotify) g_list_free);
broken_paths = NULL;
}
pika_message_literal (pika, G_OBJECT (info->progress), PIKA_MESSAGE_WARNING,
_("This XCF file is corrupt! I have loaded as much "
"of it as I can, but it is incomplete."));
xcf_load_add_masks (image);
pika_image_undo_enable (image);
return image;
hard_error:
g_clear_pointer (&group_layers, g_list_free);
if (broken_paths)
{
g_list_free_full (broken_paths, (GDestroyNotify) g_list_free);
broken_paths = NULL;
}
g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("This XCF file is corrupt! I could not even "
"salvage any partial image data from it."));
g_clear_object (&image);
return NULL;
}
static void
xcf_load_add_masks (PikaImage *image)
{
GList *layers;
GList *list;
layers = pika_image_get_layer_list (image);
for (list = layers; list; list = g_list_next (list))
{
PikaLayer *layer = list->data;
PikaLayerMask *mask;
mask = g_object_get_data (G_OBJECT (layer), "pika-layer-mask");
if (mask)
{
gboolean apply_mask;
gboolean edit_mask;
gboolean show_mask;
apply_mask = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (layer),
"pika-layer-mask-apply"));
edit_mask = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (layer),
"pika-layer-mask-edit"));
show_mask = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (layer),
"pika-layer-mask-show"));
pika_layer_add_mask (layer, mask, FALSE, NULL);
pika_layer_set_apply_mask (layer, apply_mask, FALSE);
pika_layer_set_edit_mask (layer, edit_mask);
pika_layer_set_show_mask (layer, show_mask, FALSE);
g_object_set_data (G_OBJECT (layer), "pika-layer-mask", NULL);
g_object_set_data (G_OBJECT (layer), "pika-layer-mask-apply", NULL);
g_object_set_data (G_OBJECT (layer), "pika-layer-mask-edit", NULL);
g_object_set_data (G_OBJECT (layer), "pika-layer-mask-show", NULL);
}
}
g_list_free (layers);
}
static gboolean
xcf_load_image_props (XcfInfo *info,
PikaImage *image)
{
PropType prop_type;
guint32 prop_size;
while (TRUE)
{
if (! xcf_load_prop (info, &prop_type, &prop_size))
return FALSE;
switch (prop_type)
{
case PROP_END:
return TRUE;
case PROP_COLORMAP:
{
guint32 n_colors;
guchar cmap[PIKA_IMAGE_COLORMAP_SIZE];
xcf_read_int32 (info, &n_colors, 1);
if (n_colors > (PIKA_IMAGE_COLORMAP_SIZE / 3))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"Maximum colormap size (%d) exceeded",
PIKA_IMAGE_COLORMAP_SIZE);
return FALSE;
}
if (info->file_version == 0)
{
gint i;
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
_("XCF warning: version 0 of XCF file format\n"
"did not save indexed colormaps correctly.\n"
"Substituting grayscale map."));
if (! xcf_seek_pos (info, info->cp + n_colors, NULL))
return FALSE;
for (i = 0; i < n_colors; i++)
{
cmap[i * 3 + 0] = i;
cmap[i * 3 + 1] = i;
cmap[i * 3 + 2] = i;
}
}
else
{
xcf_read_int8 (info, cmap, n_colors * 3);
}
/* only set color map if image is indexed, this is just
* sanity checking to make sure pika doesn't end up with
* an image state that is impossible.
*/
if (pika_image_get_base_type (image) == PIKA_INDEXED)
pika_image_set_colormap (image, cmap, n_colors, FALSE);
PIKA_LOG (XCF, "prop colormap n_colors=%d", n_colors);
}
break;
case PROP_COMPRESSION:
{
guint8 compression;
xcf_read_int8 (info, (guint8 *) &compression, 1);
if ((compression != COMPRESS_NONE) &&
(compression != COMPRESS_RLE) &&
(compression != COMPRESS_ZLIB) &&
(compression != COMPRESS_FRACTAL))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"Unknown compression type: %d",
(gint) compression);
return FALSE;
}
info->compression = compression;
pika_image_set_xcf_compression (image,
compression >= COMPRESS_ZLIB);
PIKA_LOG (XCF, "prop compression=%d", compression);
}
break;
case PROP_GUIDES:
{
PikaImagePrivate *private = PIKA_IMAGE_GET_PRIVATE (image);
gint32 position;
gint8 orientation;
gint i, nguides;
nguides = prop_size / (4 + 1);
for (i = 0; i < nguides; i++)
{
xcf_read_int32 (info, (guint32 *) &position, 1);
xcf_read_int8 (info, (guint8 *) &orientation, 1);
/* Some very old XCF had -1 guides which have been
* skipped since 2003 (commit 909a28ced2).
* Then XCF up to version 14 only had positive guide
* positions.
* Since XCF 15 (PIKA 3.0), off-canvas guides became a
* thing.
*/
if (info->file_version < 15 && position < 0)
continue;
PIKA_LOG (XCF, "prop guide orientation=%d position=%d",
orientation, position);
switch (orientation)
{
case XCF_ORIENTATION_HORIZONTAL:
if (info->file_version < 15 && position > pika_image_get_height (image))
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Ignoring off-canvas horizontal guide (position %d) in XCF %d file",
position, info->file_version);
else
pika_image_add_hguide (image, position, FALSE);
break;
case XCF_ORIENTATION_VERTICAL:
if (info->file_version < 15 && position > pika_image_get_width (image))
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Ignoring off-canvas vertical guide (position %d) in XCF %d file",
position, info->file_version);
else
pika_image_add_vguide (image, position, FALSE);
break;
default:
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Guide orientation out of range in XCF file");
continue;
}
}
/* this is silly as the order of guides doesn't really matter,
* but it restores the list to its original order, which
* cannot be wrong --Mitch
*/
private->guides = g_list_reverse (private->guides);
}
break;
case PROP_SAMPLE_POINTS:
{
gint n_sample_points, i;
n_sample_points = prop_size / (5 * 4);
for (i = 0; i < n_sample_points; i++)
{
PikaSamplePoint *sample_point;
gint32 x, y;
PikaColorPickMode pick_mode;
guint32 padding[2] = { 0, };
xcf_read_int32 (info, (guint32 *) &x, 1);
xcf_read_int32 (info, (guint32 *) &y, 1);
xcf_read_int32 (info, (guint32 *) &pick_mode, 1);
xcf_read_int32 (info, (guint32 *) padding, 2);
PIKA_LOG (XCF, "prop sample point x=%d y=%d mode=%d",
x, y, pick_mode);
if (pick_mode > PIKA_COLOR_PICK_MODE_LAST)
pick_mode = PIKA_COLOR_PICK_MODE_PIXEL;
sample_point = pika_image_add_sample_point_at_pos (image,
x, y, FALSE);
pika_image_set_sample_point_pick_mode (image, sample_point,
pick_mode, FALSE);
}
}
break;
case PROP_OLD_SAMPLE_POINTS:
{
gint32 x, y;
gint i, n_sample_points;
/* if there are already sample points, we loaded the new
* prop before
*/
if (pika_image_get_sample_points (image))
{
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
}
n_sample_points = prop_size / (4 + 4);
for (i = 0; i < n_sample_points; i++)
{
xcf_read_int32 (info, (guint32 *) &x, 1);
xcf_read_int32 (info, (guint32 *) &y, 1);
PIKA_LOG (XCF, "prop old sample point x=%d y=%d", x, y);
pika_image_add_sample_point_at_pos (image, x, y, FALSE);
}
}
break;
case PROP_RESOLUTION:
{
gfloat xres, yres;
xcf_read_float (info, &xres, 1);
xcf_read_float (info, &yres, 1);
PIKA_LOG (XCF, "prop resolution x=%f y=%f", xres, yres);
if (xres < PIKA_MIN_RESOLUTION || xres > PIKA_MAX_RESOLUTION ||
yres < PIKA_MIN_RESOLUTION || yres > PIKA_MAX_RESOLUTION)
{
PikaTemplate *template = image->pika->config->default_image;
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, resolution out of range in XCF file");
xres = pika_template_get_resolution_x (template);
yres = pika_template_get_resolution_y (template);
}
pika_image_set_resolution (image, xres, yres);
}
break;
case PROP_TATTOO:
{
xcf_read_int32 (info, &info->tattoo_state, 1);
PIKA_LOG (XCF, "prop tattoo state=%d", info->tattoo_state);
}
break;
case PROP_PARASITES:
{
goffset base = info->cp;
while (info->cp - base < prop_size)
{
PikaParasite *p = xcf_load_parasite (info);
GError *error = NULL;
if (! p)
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Invalid image parasite found. "
"Possibly corrupt XCF file.");
xcf_seek_pos (info, base + prop_size, NULL);
continue;
}
if (! pika_image_parasite_validate (image, p, &error))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, invalid image parasite in XCF file: %s",
error->message);
g_clear_error (&error);
}
else
{
pika_image_parasite_attach (image, p, FALSE);
}
pika_parasite_free (p);
}
if (info->cp - base != prop_size)
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Error while loading an image's parasites");
}
break;
case PROP_UNIT:
{
guint32 unit;
xcf_read_int32 (info, &unit, 1);
PIKA_LOG (XCF, "prop unit=%d", unit);
if ((unit <= PIKA_UNIT_PIXEL) ||
(unit >= pika_unit_get_number_of_built_in_units ()))
{
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, unit out of range in XCF file, "
"falling back to inches");
unit = PIKA_UNIT_INCH;
}
pika_image_set_unit (image, unit);
}
break;
case PROP_PATHS:
{
goffset base = info->cp;
if (info->file_version >= 18)
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"XCF %d file should not contain PROP_PATHS image properties",
info->file_version);
if (! xcf_load_old_paths (info, image))
xcf_seek_pos (info, base + prop_size, NULL);
}
break;
case PROP_USER_UNIT:
{
gchar *unit_strings[5];
float factor;
guint32 digits;
PikaUnit unit;
gint num_units;
gint i;
xcf_read_float (info, &factor, 1);
xcf_read_int32 (info, &digits, 1);
xcf_read_string (info, unit_strings, 5);
for (i = 0; i < 5; i++)
if (unit_strings[i] == NULL)
unit_strings[i] = g_strdup ("");
num_units = pika_unit_get_number_of_units ();
for (unit = pika_unit_get_number_of_built_in_units ();
unit < num_units; unit++)
{
/* if the factor and the identifier match some unit
* in unitrc, use the unitrc unit
*/
if ((ABS (pika_unit_get_factor (unit) - factor) < 1e-5) &&
(strcmp (unit_strings[0],
pika_unit_get_identifier (unit)) == 0))
{
break;
}
}
/* no match */
if (unit == num_units)
unit = pika_unit_new (unit_strings[0],
factor,
digits,
unit_strings[1],
unit_strings[2],
unit_strings[3],
unit_strings[4]);
pika_image_set_unit (image, unit);
for (i = 0; i < 5; i++)
g_free (unit_strings[i]);
}
break;
case PROP_VECTORS:
{
goffset base = info->cp;
if (info->file_version >= 18)
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"XCF %d file should not contain PROP_VECTORS image properties",
info->file_version);
if (xcf_load_old_vectors (info, image))
{
if (base + prop_size != info->cp)
{
g_printerr ("Mismatch in PROP_VECTORS size: "
"skipping %" G_GOFFSET_FORMAT " bytes.\n",
base + prop_size - info->cp);
xcf_seek_pos (info, base + prop_size, NULL);
}
}
else
{
/* skip silently since we don't understand the format and
* xcf_load_old_vectors already explained what was wrong
*/
xcf_seek_pos (info, base + prop_size, NULL);
}
}
break;
case PROP_ITEM_SET:
{
PikaItemList *set = NULL;
gchar *label;
GType item_type = 0;
guint32 itype;
guint32 method;
xcf_read_int32 (info, &itype, 1);
xcf_read_int32 (info, &method, 1);
xcf_read_string (info, &label, 1);
if (itype == 0)
item_type = PIKA_TYPE_LAYER;
else
item_type = PIKA_TYPE_CHANNEL;
if (itype > 1)
{
g_printerr ("xcf: unsupported item set '%s' type: %d (skipping)\n",
label ? label : "unnamed", itype);
/* Only case where we break because we wouldn't even
* know where to categorize the item set anyway. */
break;
}
else if (label == NULL)
{
g_printerr ("xcf: item set without a name or pattern (skipping)\n");
}
else if (method != G_MAXUINT32 && method > PIKA_SELECT_GLOB_PATTERN)
{
g_printerr ("xcf: unsupported item set '%s' selection method attribute: 0x%x (skipping)\n",
label, method);
}
else
{
if (method == G_MAXUINT32)
{
/* Don't use pika_item_list_named_new() because it
* doesn't allow NULL items (it would try to get the
* selected items instead).
*/
set = g_object_new (PIKA_TYPE_ITEM_LIST,
"image", image,
"name", label,
"is-pattern", FALSE,
"item-type", item_type,
"items", NULL,
NULL);
}
else
{
set = pika_item_list_pattern_new (image, item_type,
method, label);
}
}
/* Note: we are still adding invalid item sets as NULL on
* purpose, in order not to break order-base association
* between PROP_ITEM_SET and PROP_ITEM_SET_ITEM.
*/
if (item_type == PIKA_TYPE_LAYER)
info->layer_sets = g_list_prepend (info->layer_sets, set);
else
info->channel_sets = g_list_prepend (info->channel_sets, set);
}
break;
default:
#ifdef PIKA_UNSTABLE
g_printerr ("unexpected/unknown image property: %d (skipping)\n",
prop_type);
#endif
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
}
}
return FALSE;
}
static gboolean
xcf_load_layer_props (XcfInfo *info,
PikaImage *image,
PikaLayer **layer,
GList **item_path,
gboolean *apply_mask,
gboolean *edit_mask,
gboolean *show_mask,
guint32 *text_layer_flags,
guint32 *group_layer_flags)
{
PropType prop_type;
guint32 prop_size;
while (TRUE)
{
if (! xcf_load_prop (info, &prop_type, &prop_size))
return FALSE;
switch (prop_type)
{
case PROP_END:
return TRUE;
case PROP_ACTIVE_LAYER:
info->selected_layers = g_list_prepend (info->selected_layers, *layer);
break;
case PROP_FLOATING_SELECTION:
info->floating_sel = *layer;
xcf_read_offset (info, &info->floating_sel_offset, 1);
break;
case PROP_OPACITY:
{
guint32 opacity;
xcf_read_int32 (info, &opacity, 1);
pika_layer_set_opacity (*layer, (gdouble) opacity / 255.0, FALSE);
}
break;
case PROP_FLOAT_OPACITY:
{
gfloat opacity;
xcf_read_float (info, &opacity, 1);
pika_layer_set_opacity (*layer, opacity, FALSE);
}
break;
case PROP_VISIBLE:
{
gboolean visible;
xcf_read_int32 (info, (guint32 *) &visible, 1);
pika_item_set_visible (PIKA_ITEM (*layer), visible, FALSE);
}
break;
case PROP_LINKED:
{
gboolean linked;
xcf_read_int32 (info, (guint32 *) &linked, 1);
if (linked)
info->linked_layers = g_list_prepend (info->linked_layers, *layer);
}
break;
case PROP_COLOR_TAG:
{
PikaColorTag color_tag;
xcf_read_int32 (info, (guint32 *) &color_tag, 1);
pika_item_set_color_tag (PIKA_ITEM (*layer), color_tag, FALSE);
}
break;
case PROP_LOCK_CONTENT:
{
gboolean lock_content;
xcf_read_int32 (info, (guint32 *) &lock_content, 1);
if (pika_item_can_lock_content (PIKA_ITEM (*layer)))
pika_item_set_lock_content (PIKA_ITEM (*layer),
lock_content, FALSE);
}
break;
case PROP_LOCK_ALPHA:
{
gboolean lock_alpha;
xcf_read_int32 (info, (guint32 *) &lock_alpha, 1);
if (pika_layer_can_lock_alpha (*layer))
pika_layer_set_lock_alpha (*layer, lock_alpha, FALSE);
}
break;
case PROP_LOCK_POSITION:
{
gboolean lock_position;
xcf_read_int32 (info, (guint32 *) &lock_position, 1);
if (pika_item_can_lock_position (PIKA_ITEM (*layer)))
pika_item_set_lock_position (PIKA_ITEM (*layer),
lock_position, FALSE);
}
break;
case PROP_LOCK_VISIBILITY:
{
gboolean lock_visibility;
xcf_read_int32 (info, (guint32 *) &lock_visibility, 1);
if (pika_item_can_lock_visibility (PIKA_ITEM (*layer)))
pika_item_set_lock_visibility (PIKA_ITEM (*layer),
lock_visibility, FALSE);
}
break;
case PROP_APPLY_MASK:
xcf_read_int32 (info, (guint32 *) apply_mask, 1);
break;
case PROP_EDIT_MASK:
xcf_read_int32 (info, (guint32 *) edit_mask, 1);
break;
case PROP_SHOW_MASK:
xcf_read_int32 (info, (guint32 *) show_mask, 1);
break;
case PROP_OFFSETS:
{
gint32 offset_x;
gint32 offset_y;
xcf_read_int32 (info, (guint32 *) &offset_x, 1);
xcf_read_int32 (info, (guint32 *) &offset_y, 1);
if (offset_x < -PIKA_MAX_IMAGE_SIZE ||
offset_x > PIKA_MAX_IMAGE_SIZE)
{
g_printerr ("unexpected item offset_x (%d) in XCF, "
"setting to 0\n", offset_x);
offset_x = 0;
}
if (offset_y < -PIKA_MAX_IMAGE_SIZE ||
offset_y > PIKA_MAX_IMAGE_SIZE)
{
g_printerr ("unexpected item offset_y (%d) in XCF, "
"setting to 0\n", offset_y);
offset_y = 0;
}
pika_item_set_offset (PIKA_ITEM (*layer), offset_x, offset_y);
}
break;
case PROP_MODE:
{
PikaLayerMode mode;
xcf_read_int32 (info, (guint32 *) &mode, 1);
if (mode == PIKA_LAYER_MODE_OVERLAY_LEGACY)
mode = PIKA_LAYER_MODE_SOFTLIGHT_LEGACY;
pika_layer_set_mode (*layer, mode, FALSE);
}
break;
case PROP_BLEND_SPACE:
{
gint32 blend_space;
xcf_read_int32 (info, (guint32 *) &blend_space, 1);
/* if blend_space < 0 it was originally AUTO, and its negative is
* the actual value AUTO used to map to at the time the file was
* saved. if AUTO still maps to the same value, keep using AUTO
* for the property; otherwise, use the concrete value.
*/
if (blend_space < 0)
{
PikaLayerMode mode = pika_layer_get_mode (*layer);
blend_space = -blend_space;
if (blend_space == pika_layer_mode_get_blend_space (mode))
blend_space = PIKA_LAYER_COLOR_SPACE_AUTO;
else
PIKA_LOG (XCF, "BLEND_SPACE: AUTO => %d", blend_space);
}
pika_layer_set_blend_space (*layer, blend_space, FALSE);
}
break;
case PROP_COMPOSITE_SPACE:
{
gint32 composite_space;
xcf_read_int32 (info, (guint32 *) &composite_space, 1);
/* if composite_space < 0 it was originally AUTO, and its negative
* is the actual value AUTO used to map to at the time the file was
* saved. if AUTO still maps to the same value, keep using AUTO
* for the property; otherwise, use the concrete value.
*/
if (composite_space < 0)
{
PikaLayerMode mode = pika_layer_get_mode (*layer);
composite_space = -composite_space;
if (composite_space == pika_layer_mode_get_composite_space (mode))
composite_space = PIKA_LAYER_COLOR_SPACE_AUTO;
else
PIKA_LOG (XCF, "COMPOSITE_SPACE: AUTO => %d", composite_space);
}
pika_layer_set_composite_space (*layer, composite_space, FALSE);
}
break;
case PROP_COMPOSITE_MODE:
{
gint32 composite_mode;
xcf_read_int32 (info, (guint32 *) &composite_mode, 1);
/* if composite_mode < 0 it was originally AUTO, and its negative
* is the actual value AUTO used to map to at the time the file was
* saved. if AUTO still maps to the same value, keep using AUTO
* for the property; otherwise, use the concrete value.
*/
if (composite_mode < 0)
{
PikaLayerMode mode = pika_layer_get_mode (*layer);
composite_mode = -composite_mode;
if (composite_mode == pika_layer_mode_get_composite_mode (mode))
composite_mode = PIKA_LAYER_COMPOSITE_AUTO;
else
PIKA_LOG (XCF, "COMPOSITE_MODE: AUTO => %d", composite_mode);
}
pika_layer_set_composite_mode (*layer, composite_mode, FALSE);
}
break;
case PROP_TATTOO:
{
PikaTattoo tattoo;
xcf_read_int32 (info, (guint32 *) &tattoo, 1);
pika_item_set_tattoo (PIKA_ITEM (*layer), tattoo);
}
break;
case PROP_PARASITES:
{
goffset base = info->cp;
while (info->cp - base < prop_size)
{
PikaParasite *p = xcf_load_parasite (info);
GError *error = NULL;
if (! p)
return FALSE;
if (! pika_item_parasite_validate (PIKA_ITEM (*layer), p, &error))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, invalid layer parasite in XCF file: %s",
error->message);
g_clear_error (&error);
}
else
{
pika_item_parasite_attach (PIKA_ITEM (*layer), p, FALSE);
}
pika_parasite_free (p);
}
if (info->cp - base != prop_size)
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Error while loading a layer's parasites");
}
break;
case PROP_TEXT_LAYER_FLAGS:
xcf_read_int32 (info, text_layer_flags, 1);
break;
case PROP_GROUP_ITEM:
{
PikaLayer *group;
gboolean is_selected_layer;
/* We're going to delete *layer, Don't leave its pointers
* in @info. After that, we'll restore them back with the
* new pointer. See bug #767873.
*/
is_selected_layer = (g_list_find (info->selected_layers, *layer ) != NULL);
if (is_selected_layer)
info->selected_layers = g_list_remove (info->selected_layers, *layer);
if (*layer == info->floating_sel)
info->floating_sel = NULL;
group = pika_group_layer_new (image);
pika_object_set_name (PIKA_OBJECT (group),
pika_object_get_name (*layer));
g_object_ref_sink (*layer);
g_object_unref (*layer);
*layer = group;
if (is_selected_layer)
info->selected_layers = g_list_prepend (info->selected_layers, *layer);
/* Don't restore info->floating_sel because group layers
* can't be floating selections
*/
}
break;
case PROP_ITEM_PATH:
{
goffset base = info->cp;
GList *path = NULL;
while (info->cp - base < prop_size)
{
guint32 index;
if (xcf_read_int32 (info, &index, 1) != 4)
{
g_list_free (path);
return FALSE;
}
path = g_list_append (path, GUINT_TO_POINTER (index));
}
*item_path = path;
}
break;
case PROP_GROUP_ITEM_FLAGS:
xcf_read_int32 (info, group_layer_flags, 1);
break;
case PROP_ITEM_SET_ITEM:
{
PikaItemList *set;
guint32 n;
xcf_read_int32 (info, &n, 1);
set = g_list_nth_data (info->layer_sets, n);
if (set == NULL)
g_printerr ("xcf: layer '%s' cannot be added to unknown layer set at index %d (skipping)\n",
pika_object_get_name (*layer), n);
else if (! g_type_is_a (G_TYPE_FROM_INSTANCE (*layer),
pika_item_list_get_item_type (set)))
g_printerr ("xcf: layer '%s' cannot be added to item set '%s' with item type %s (skipping)\n",
pika_object_get_name (*layer), pika_object_get_name (set),
g_type_name (pika_item_list_get_item_type (set)));
else if (pika_item_list_is_pattern (set, NULL))
g_printerr ("xcf: layer '%s' cannot be added to pattern item set '%s' (skipping)\n",
pika_object_get_name (*layer), pika_object_get_name (set));
else
pika_item_list_add (set, PIKA_ITEM (*layer));
}
break;
default:
#ifdef PIKA_UNSTABLE
g_printerr ("unexpected/unknown layer property: %d (skipping)\n",
prop_type);
#endif
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
}
}
return FALSE;
}
static gboolean
xcf_check_layer_props (XcfInfo *info,
GList **item_path,
gboolean *is_group_layer,
gboolean *is_text_layer)
{
PropType prop_type;
guint32 prop_size;
g_return_val_if_fail (*is_group_layer == FALSE, FALSE);
g_return_val_if_fail (*is_text_layer == FALSE, FALSE);
while (TRUE)
{
if (! xcf_load_prop (info, &prop_type, &prop_size))
return FALSE;
switch (prop_type)
{
case PROP_END:
return TRUE;
case PROP_TEXT_LAYER_FLAGS:
*is_text_layer = TRUE;
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
case PROP_GROUP_ITEM:
case PROP_GROUP_ITEM_FLAGS:
*is_group_layer = TRUE;
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
case PROP_ITEM_PATH:
{
goffset base = info->cp;
GList *path = NULL;
while (info->cp - base < prop_size)
{
guint32 index;
if (xcf_read_int32 (info, &index, 1) != 4)
{
g_list_free (path);
return FALSE;
}
path = g_list_append (path, GUINT_TO_POINTER (index));
}
*item_path = path;
}
break;
case PROP_ACTIVE_LAYER:
case PROP_FLOATING_SELECTION:
case PROP_OPACITY:
case PROP_FLOAT_OPACITY:
case PROP_VISIBLE:
case PROP_LINKED:
case PROP_COLOR_TAG:
case PROP_LOCK_CONTENT:
case PROP_LOCK_ALPHA:
case PROP_LOCK_POSITION:
case PROP_LOCK_VISIBILITY:
case PROP_APPLY_MASK:
case PROP_EDIT_MASK:
case PROP_SHOW_MASK:
case PROP_OFFSETS:
case PROP_MODE:
case PROP_BLEND_SPACE:
case PROP_COMPOSITE_SPACE:
case PROP_COMPOSITE_MODE:
case PROP_TATTOO:
case PROP_PARASITES:
case PROP_ITEM_SET_ITEM:
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
/* Just ignore for now. */
break;
default:
#ifdef PIKA_UNSTABLE
g_printerr ("unexpected/unknown layer property: %d (skipping)\n",
prop_type);
#endif
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
}
}
return FALSE;
}
static gboolean
xcf_load_channel_props (XcfInfo *info,
PikaImage *image,
PikaChannel **channel)
{
PropType prop_type;
guint32 prop_size;
while (TRUE)
{
if (! xcf_load_prop (info, &prop_type, &prop_size))
return FALSE;
switch (prop_type)
{
case PROP_END:
return TRUE;
case PROP_ACTIVE_CHANNEL:
info->selected_channels = g_list_prepend (info->selected_channels, *channel);
break;
case PROP_SELECTION:
{
PikaChannel *mask;
GList *iter;
/* We're going to delete *channel, Don't leave its pointer
* in @info. See bug #767873.
*/
for (iter = info->selected_channels; iter; iter = iter->next)
if (*channel == iter->data)
{
info->selected_channels = g_list_delete_link (info->selected_channels, iter);
break;
}
mask =
pika_selection_new (image,
pika_item_get_width (PIKA_ITEM (*channel)),
pika_item_get_height (PIKA_ITEM (*channel)));
pika_image_take_mask (image, mask);
pika_drawable_steal_buffer (PIKA_DRAWABLE (mask),
PIKA_DRAWABLE (*channel));
g_object_unref (*channel);
*channel = mask;
/* Don't restore info->selected_channels because the
* selection can't be the active channel
*/
}
break;
case PROP_OPACITY:
{
guint32 opacity;
xcf_read_int32 (info, &opacity, 1);
pika_channel_set_opacity (*channel, opacity / 255.0, FALSE);
}
break;
case PROP_FLOAT_OPACITY:
{
gfloat opacity;
xcf_read_float (info, &opacity, 1);
pika_channel_set_opacity (*channel, opacity, FALSE);
}
break;
case PROP_VISIBLE:
{
gboolean visible;
xcf_read_int32 (info, (guint32 *) &visible, 1);
pika_item_set_visible (PIKA_ITEM (*channel), visible, FALSE);
}
break;
case PROP_COLOR_TAG:
{
PikaColorTag color_tag;
xcf_read_int32 (info, (guint32 *) &color_tag, 1);
pika_item_set_color_tag (PIKA_ITEM (*channel), color_tag, FALSE);
}
break;
case PROP_LINKED:
{
gboolean linked;
xcf_read_int32 (info, (guint32 *) &linked, 1);
if (linked)
info->linked_channels = g_list_prepend (info->linked_channels, *channel);
}
break;
case PROP_LOCK_CONTENT:
{
gboolean lock_content;
xcf_read_int32 (info, (guint32 *) &lock_content, 1);
if (pika_item_can_lock_content (PIKA_ITEM (*channel)))
pika_item_set_lock_content (PIKA_ITEM (*channel),
lock_content, FALSE);
}
break;
case PROP_LOCK_POSITION:
{
gboolean lock_position;
xcf_read_int32 (info, (guint32 *) &lock_position, 1);
if (pika_item_can_lock_position (PIKA_ITEM (*channel)))
pika_item_set_lock_position (PIKA_ITEM (*channel),
lock_position, FALSE);
}
break;
case PROP_LOCK_VISIBILITY:
{
gboolean lock_visibility;
xcf_read_int32 (info, (guint32 *) &lock_visibility, 1);
if (pika_item_can_lock_visibility (PIKA_ITEM (*channel)))
pika_item_set_lock_visibility (PIKA_ITEM (*channel),
lock_visibility, FALSE);
}
break;
case PROP_SHOW_MASKED:
{
gboolean show_masked;
xcf_read_int32 (info, (guint32 *) &show_masked, 1);
pika_channel_set_show_masked (*channel, show_masked);
}
break;
case PROP_COLOR:
{
guchar col[3];
xcf_read_int8 (info, (guint8 *) col, 3);
pika_rgb_set_uchar (&(*channel)->color, col[0], col[1], col[2]);
}
break;
case PROP_FLOAT_COLOR:
{
gfloat col[3];
xcf_read_float (info, col, 3);
pika_rgb_set (&(*channel)->color, col[0], col[1], col[2]);
}
break;
case PROP_TATTOO:
{
PikaTattoo tattoo;
xcf_read_int32 (info, (guint32 *) &tattoo, 1);
pika_item_set_tattoo (PIKA_ITEM (*channel), tattoo);
}
break;
case PROP_PARASITES:
{
goffset base = info->cp;
while ((info->cp - base) < prop_size)
{
PikaParasite *p = xcf_load_parasite (info);
GError *error = NULL;
if (! p)
return FALSE;
if (! pika_item_parasite_validate (PIKA_ITEM (*channel), p,
&error))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, invalid channel parasite in XCF file: %s",
error->message);
g_clear_error (&error);
}
else
{
pika_item_parasite_attach (PIKA_ITEM (*channel), p, FALSE);
}
pika_parasite_free (p);
}
if (info->cp - base != prop_size)
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Error while loading a channel's parasites");
}
break;
case PROP_ITEM_SET_ITEM:
{
PikaItemList *set;
guint32 n;
xcf_read_int32 (info, &n, 1);
set = g_list_nth_data (info->channel_sets, n);
if (set == NULL)
g_printerr ("xcf: unknown channel set: %d (skipping)\n", n);
else if (! g_type_is_a (G_TYPE_FROM_INSTANCE (*channel),
pika_item_list_get_item_type (set)))
g_printerr ("xcf: channel '%s' cannot be added to item set '%s' with item type %s (skipping)\n",
pika_object_get_name (*channel), pika_object_get_name (set),
g_type_name (pika_item_list_get_item_type (set)));
else
pika_item_list_add (set, PIKA_ITEM (*channel));
}
break;
default:
#ifdef PIKA_UNSTABLE
g_printerr ("unexpected/unknown channel property: %d (skipping)\n",
prop_type);
#endif
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
}
}
return FALSE;
}
static gboolean
xcf_load_vectors_props (XcfInfo *info,
PikaImage *image,
PikaVectors **vectors)
{
PropType prop_type;
guint32 prop_size;
while (TRUE)
{
if (! xcf_load_prop (info, &prop_type, &prop_size))
return FALSE;
switch (prop_type)
{
case PROP_END:
return TRUE;
case PROP_SELECTED_PATH:
info->selected_vectors = g_list_prepend (info->selected_vectors, *vectors);
break;
case PROP_VISIBLE:
{
gboolean visible;
xcf_read_int32 (info, (guint32 *) &visible, 1);
pika_item_set_visible (PIKA_ITEM (*vectors), visible, FALSE);
}
break;
case PROP_COLOR_TAG:
{
PikaColorTag color_tag;
xcf_read_int32 (info, (guint32 *) &color_tag, 1);
pika_item_set_color_tag (PIKA_ITEM (*vectors), color_tag, FALSE);
}
break;
case PROP_LOCK_CONTENT:
{
gboolean lock_content;
xcf_read_int32 (info, (guint32 *) &lock_content, 1);
if (pika_item_can_lock_content (PIKA_ITEM (*vectors)))
pika_item_set_lock_content (PIKA_ITEM (*vectors),
lock_content, FALSE);
}
break;
case PROP_LOCK_POSITION:
{
gboolean lock_position;
xcf_read_int32 (info, (guint32 *) &lock_position, 1);
if (pika_item_can_lock_position (PIKA_ITEM (*vectors)))
pika_item_set_lock_position (PIKA_ITEM (*vectors),
lock_position, FALSE);
}
break;
case PROP_LOCK_VISIBILITY:
{
gboolean lock_visibility;
xcf_read_int32 (info, (guint32 *) &lock_visibility, 1);
if (pika_item_can_lock_visibility (PIKA_ITEM (*vectors)))
pika_item_set_lock_visibility (PIKA_ITEM (*vectors),
lock_visibility, FALSE);
}
break;
case PROP_TATTOO:
{
PikaTattoo tattoo;
xcf_read_int32 (info, (guint32 *) &tattoo, 1);
pika_item_set_tattoo (PIKA_ITEM (*vectors), tattoo);
}
break;
case PROP_PARASITES:
{
goffset base = info->cp;
while ((info->cp - base) < prop_size)
{
PikaParasite *p = xcf_load_parasite (info);
GError *error = NULL;
if (! p)
return FALSE;
if (! pika_item_parasite_validate (PIKA_ITEM (*vectors), p,
&error))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, invalid path parasite in XCF file: %s",
error->message);
g_clear_error (&error);
}
else
{
pika_item_parasite_attach (PIKA_ITEM (*vectors), p, FALSE);
}
pika_parasite_free (p);
}
if (info->cp - base != prop_size)
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Error while loading a path's parasites");
}
break;
#if 0
case PROP_ITEM_SET_ITEM:
{
PikaItemList *set;
guint32 n;
xcf_read_int32 (info, &n, 1);
set = g_list_nth_data (info->vectors_sets, n);
if (set == NULL)
g_printerr ("xcf: unknown path set: %d (skipping)\n", n);
else if (! g_type_is_a (G_TYPE_FROM_INSTANCE (*vectors),
pika_item_list_get_item_type (set)))
g_printerr ("xcf: path '%s' cannot be added to item set '%s' with item type %s (skipping)\n",
pika_object_get_name (*vectors), pika_object_get_name (set),
g_type_name (pika_item_list_get_item_type (set)));
else
pika_item_list_add (set, PIKA_ITEM (*vectors));
}
break;
#endif
default:
#ifdef PIKA_UNSTABLE
g_printerr ("unexpected/unknown path property: %d (skipping)\n",
prop_type);
#endif
if (! xcf_skip_unknown_prop (info, prop_size))
return FALSE;
break;
}
}
return FALSE;
}
static gboolean
xcf_load_prop (XcfInfo *info,
PropType *prop_type,
guint32 *prop_size)
{
if (G_UNLIKELY (xcf_read_int32 (info, (guint32 *) prop_type, 1) != 4))
return FALSE;
if (G_UNLIKELY (xcf_read_int32 (info, (guint32 *) prop_size, 1) != 4))
return FALSE;
PIKA_LOG (XCF, "prop type=%d size=%u", *prop_type, *prop_size);
return TRUE;
}
static PikaLayer *
xcf_load_layer (XcfInfo *info,
PikaImage *image,
GList **item_path)
{
PikaLayer *layer;
PikaLayerMask *layer_mask;
goffset hierarchy_offset;
goffset layer_mask_offset;
gboolean apply_mask = TRUE;
gboolean edit_mask = FALSE;
gboolean show_mask = FALSE;
GList *selected;
GList *linked;
gboolean floating;
guint32 group_layer_flags = 0;
guint32 text_layer_flags = 0;
gint width;
gint height;
gint type;
PikaImageBaseType base_type;
gboolean has_alpha;
const Babl *format;
gboolean is_fs_drawable;
gchar *name;
goffset cur_offset;
/* check and see if this is the drawable the floating selection
* is attached to. if it is then we'll do the attachment in our caller.
*/
is_fs_drawable = (info->cp == info->floating_sel_offset);
/* read in the layer width, height, type and name */
xcf_read_int32 (info, (guint32 *) &width, 1);
xcf_read_int32 (info, (guint32 *) &height, 1);
xcf_read_int32 (info, (guint32 *) &type, 1);
xcf_read_string (info, &name, 1);
PIKA_LOG (XCF, "width=%d, height=%d, type=%d, name='%s'",
width, height, type, name);
switch (type)
{
case PIKA_RGB_IMAGE:
base_type = PIKA_RGB;
has_alpha = FALSE;
break;
case PIKA_RGBA_IMAGE:
base_type = PIKA_RGB;
has_alpha = TRUE;
break;
case PIKA_GRAY_IMAGE:
base_type = PIKA_GRAY;
has_alpha = FALSE;
break;
case PIKA_GRAYA_IMAGE:
base_type = PIKA_GRAY;
has_alpha = TRUE;
break;
case PIKA_INDEXED_IMAGE:
base_type = PIKA_INDEXED;
has_alpha = FALSE;
break;
case PIKA_INDEXEDA_IMAGE:
base_type = PIKA_INDEXED;
has_alpha = TRUE;
break;
default:
g_free (name);
return NULL;
}
if (width <= 0 || height <= 0 ||
width > PIKA_MAX_IMAGE_SIZE || height > PIKA_MAX_IMAGE_SIZE)
{
gboolean is_group_layer = FALSE;
gboolean is_text_layer = FALSE;
goffset saved_pos;
saved_pos = info->cp;
/* Load item path and check if this is a group or text layer. */
xcf_check_layer_props (info, item_path, &is_group_layer, &is_text_layer);
if ((is_text_layer || is_group_layer) &&
xcf_seek_pos (info, saved_pos, NULL))
{
/* Something is wrong, but leave a chance to the layer because
* anyway group and text layer depends on their contents.
*/
width = height = 1;
g_clear_pointer (item_path, g_list_free);
}
else
{
g_free (name);
return NULL;
}
}
if (base_type == PIKA_GRAY)
{
/* do not use pika_image_get_layer_format() because it might
* be the floating selection of a channel or mask
*/
format = pika_image_get_format (image, base_type,
pika_image_get_precision (image),
has_alpha,
NULL /* we will fix the space later */);
}
else
{
format = pika_image_get_layer_format (image, has_alpha);
}
/* create a new layer */
layer = pika_layer_new (image, width, height,
format, name,
PIKA_OPACITY_OPAQUE, PIKA_LAYER_MODE_NORMAL);
g_free (name);
if (! layer)
return NULL;
/* read in the layer properties */
if (! xcf_load_layer_props (info, image, &layer, item_path,
&apply_mask, &edit_mask, &show_mask,
&text_layer_flags, &group_layer_flags))
goto error;
PIKA_LOG (XCF, "layer props loaded");
xcf_progress_update (info);
/* call the evil text layer hack that might change our layer pointer */
selected = g_list_find (info->selected_layers, layer);
linked = g_list_find (info->linked_layers, layer);
floating = (info->floating_sel == layer);
if (pika_text_layer_xcf_load_hack (&layer))
{
pika_text_layer_set_xcf_flags (PIKA_TEXT_LAYER (layer),
text_layer_flags);
if (selected)
{
info->selected_layers = g_list_delete_link (info->selected_layers, selected);
info->selected_layers = g_list_prepend (info->selected_layers, layer);
}
if (linked)
{
info->linked_layers = g_list_delete_link (info->linked_layers, linked);
info->linked_layers = g_list_prepend (info->linked_layers, layer);
}
if (floating)
info->floating_sel = layer;
}
/* if this is not the floating selection, we can fix the layer's
* space already now, the function will do nothing if we already
* created the layer with the right format
*/
if (! floating && base_type == PIKA_GRAY)
pika_layer_fix_format_space (layer, FALSE, FALSE);
/* read the hierarchy and layer mask offsets */
cur_offset = info->cp;
xcf_read_offset (info, &hierarchy_offset, 1);
xcf_read_offset (info, &layer_mask_offset, 1);
/* read in the hierarchy (ignore it for group layers, both as an
* optimization and because the hierarchy's extents don't match
* the group layer's tiles)
*/
if (! pika_viewable_get_children (PIKA_VIEWABLE (layer)))
{
if (hierarchy_offset < cur_offset)
{
PIKA_LOG (XCF, "Invalid layer hierarchy offset!");
goto error;
}
if (! xcf_seek_pos (info, hierarchy_offset, NULL))
goto error;
PIKA_LOG (XCF, "loading buffer");
if (! xcf_load_buffer (info,
pika_drawable_get_buffer (PIKA_DRAWABLE (layer))))
goto error;
PIKA_LOG (XCF, "buffer loaded");
xcf_progress_update (info);
}
else
{
gboolean expanded = group_layer_flags & XCF_GROUP_ITEM_EXPANDED;
pika_viewable_set_expanded (PIKA_VIEWABLE (layer), expanded);
}
/* read in the layer mask */
if (layer_mask_offset != 0)
{
if (layer_mask_offset < cur_offset)
{
PIKA_LOG (XCF, "Invalid layer mask offset!");
goto error;
}
if (! xcf_seek_pos (info, layer_mask_offset, NULL))
goto error;
layer_mask = xcf_load_layer_mask (info, image);
if (! layer_mask)
goto error;
xcf_progress_update (info);
/* don't add the layer mask yet, that won't work for group
* layers which update their size automatically; instead
* attach it so it can be added when all layers are loaded
*/
g_object_set_data_full (G_OBJECT (layer), "pika-layer-mask",
g_object_ref_sink (layer_mask),
(GDestroyNotify) g_object_unref);
g_object_set_data (G_OBJECT (layer), "pika-layer-mask-apply",
GINT_TO_POINTER (apply_mask));
g_object_set_data (G_OBJECT (layer), "pika-layer-mask-edit",
GINT_TO_POINTER (edit_mask));
g_object_set_data (G_OBJECT (layer), "pika-layer-mask-show",
GINT_TO_POINTER (show_mask));
}
/* attach the floating selection... */
if (is_fs_drawable)
info->floating_sel_drawable = PIKA_DRAWABLE (layer);
return layer;
error:
info->selected_layers = g_list_remove (info->selected_layers, layer);
if (info->floating_sel == layer)
info->floating_sel = NULL;
if (info->floating_sel_drawable == PIKA_DRAWABLE (layer))
info->floating_sel_drawable = NULL;
g_object_unref (layer);
return NULL;
}
static PikaChannel *
xcf_load_channel (XcfInfo *info,
PikaImage *image)
{
PikaChannel *channel;
goffset hierarchy_offset;
gint width;
gint height;
gboolean is_fs_drawable;
gchar *name;
PikaRGB color = { 0.0, 0.0, 0.0, PIKA_OPACITY_OPAQUE };
goffset cur_offset;
/* check and see if this is the drawable the floating selection
* is attached to. if it is then we'll do the attachment in our caller.
*/
is_fs_drawable = (info->cp == info->floating_sel_offset);
/* read in the layer width, height and name */
xcf_read_int32 (info, (guint32 *) &width, 1);
xcf_read_int32 (info, (guint32 *) &height, 1);
if (width <= 0 || height <= 0 ||
width > PIKA_MAX_IMAGE_SIZE || height > PIKA_MAX_IMAGE_SIZE)
{
PIKA_LOG (XCF, "Invalid channel size %d x %d.", width, height);
return NULL;
}
xcf_read_string (info, &name, 1);
PIKA_LOG (XCF, "Channel width=%d, height=%d, name='%s'",
width, height, name);
/* create a new channel */
channel = pika_channel_new (image, width, height, name, &color);
g_free (name);
if (!channel)
return NULL;
/* read in the channel properties */
if (! xcf_load_channel_props (info, image, &channel))
goto error;
xcf_progress_update (info);
/* read the hierarchy offset */
cur_offset = info->cp;
xcf_read_offset (info, &hierarchy_offset, 1);
if (hierarchy_offset < cur_offset)
{
PIKA_LOG (XCF, "Invalid hierarchy offset!");
goto error;
}
/* read in the hierarchy */
if (! xcf_seek_pos (info, hierarchy_offset, NULL))
goto error;
if (! xcf_load_buffer (info,
pika_drawable_get_buffer (PIKA_DRAWABLE (channel))))
goto error;
xcf_progress_update (info);
if (is_fs_drawable)
info->floating_sel_drawable = PIKA_DRAWABLE (channel);
return channel;
error:
/* don't unref the selection of a partially loaded XCF */
if (channel != pika_image_get_mask (image))
{
GList *iter;
for (iter = info->selected_channels; iter; iter = iter->next)
if (channel == iter->data)
{
info->selected_channels = g_list_delete_link (info->selected_channels, iter);
break;
}
if (info->floating_sel_drawable == PIKA_DRAWABLE (channel))
info->floating_sel_drawable = NULL;
g_object_unref (channel);
}
return NULL;
}
/* The new path structure since XCF 18. */
static PikaVectors *
xcf_load_vectors (XcfInfo *info,
PikaImage *image)
{
PikaVectors *vectors = NULL;
gchar *name;
guint32 version;
guint32 plength;
guint32 num_strokes;
goffset base;
gint i;
/* read in the path name. */
xcf_read_string (info, &name, 1);
PIKA_LOG (XCF, "Path name='%s'", name);
/* create a new path */
vectors = pika_vectors_new (image, name);
g_free (name);
if (! vectors)
return NULL;
/* Read the path's payload size. */
xcf_read_int32 (info, (guint32 *) &plength, 1);
base = info->cp;
/* read in the path properties */
if (! xcf_load_vectors_props (info, image, &vectors))
goto error;
PIKA_LOG (XCF, "path props loaded");
xcf_progress_update (info);
xcf_read_int32 (info, (guint32 *) &version, 1);
if (version != 1)
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Unknown vectors version: %d (skipping)", version);
goto error;
}
/* Read the number of strokes. */
xcf_read_int32 (info, &num_strokes, 1);
for (i = 0; i < num_strokes; i++)
{
guint32 stroke_type_id;
guint32 closed;
guint32 num_axes;
guint32 num_control_points;
guint32 type;
gfloat coords[13] = PIKA_COORDS_DEFAULT_VALUES;
PikaStroke *stroke;
gint j;
PikaValueArray *control_points;
GValue value = G_VALUE_INIT;
PikaAnchor anchor = { { 0, } };
GType stroke_type;
g_value_init (&value, PIKA_TYPE_ANCHOR);
xcf_read_int32 (info, &stroke_type_id, 1);
xcf_read_int32 (info, &closed, 1);
xcf_read_int32 (info, &num_axes, 1);
xcf_read_int32 (info, &num_control_points, 1);
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("stroke_type: %d, closed: %d, num_axes %d, len %d\n",
stroke_type_id, closed, num_axes, num_control_points);
#endif
switch (stroke_type_id)
{
case XCF_STROKETYPE_BEZIER_STROKE:
stroke_type = PIKA_TYPE_BEZIER_STROKE;
break;
default:
g_printerr ("skipping unknown stroke type\n");
xcf_seek_pos (info,
info->cp + 4 * num_axes * num_control_points,
NULL);
continue;
}
if (num_axes < 2 || num_axes > 6)
{
g_printerr ("bad number of axes in stroke description\n");
goto error;
}
control_points = pika_value_array_new (num_control_points);
anchor.selected = FALSE;
for (j = 0; j < num_control_points; j++)
{
xcf_read_int32 (info, &type, 1);
xcf_read_float (info, coords, num_axes);
anchor.type = type;
anchor.position.x = coords[0];
anchor.position.y = coords[1];
anchor.position.pressure = coords[2];
anchor.position.xtilt = coords[3];
anchor.position.ytilt = coords[4];
anchor.position.wheel = coords[5];
g_value_set_boxed (&value, &anchor);
pika_value_array_append (control_points, &value);
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("Anchor: %d, (%f, %f, %f, %f, %f, %f)\n", type,
coords[0], coords[1], coords[2], coords[3],
coords[4], coords[5]);
#endif
}
g_value_unset (&value);
stroke = g_object_new (stroke_type,
"closed", closed,
"control-points", control_points,
NULL);
pika_vectors_stroke_add (vectors, stroke);
g_object_unref (stroke);
pika_value_array_unref (control_points);
}
if (plength != info->cp - base)
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Path payload size does not match stored size (skipping)");
goto error;
}
return vectors;
error:
xcf_seek_pos (info, base + plength, NULL);
g_clear_object (&vectors);
return NULL;
}
static PikaLayerMask *
xcf_load_layer_mask (XcfInfo *info,
PikaImage *image)
{
PikaLayerMask *layer_mask;
PikaChannel *channel;
GList *iter;
goffset hierarchy_offset;
gint width;
gint height;
gboolean is_fs_drawable;
gchar *name;
PikaRGB color = { 0.0, 0.0, 0.0, PIKA_OPACITY_OPAQUE };
goffset cur_offset;
/* check and see if this is the drawable the floating selection
* is attached to. if it is then we'll do the attachment in our caller.
*/
is_fs_drawable = (info->cp == info->floating_sel_offset);
/* read in the layer width, height and name */
xcf_read_int32 (info, (guint32 *) &width, 1);
xcf_read_int32 (info, (guint32 *) &height, 1);
if (width <= 0 || height <= 0 ||
width > PIKA_MAX_IMAGE_SIZE || height > PIKA_MAX_IMAGE_SIZE)
{
PIKA_LOG (XCF, "Invalid layer mask size %d x %d.", width, height);
return NULL;
}
xcf_read_string (info, &name, 1);
PIKA_LOG (XCF, "Layer mask width=%d, height=%d, name='%s'",
width, height, name);
/* create a new layer mask */
layer_mask = pika_layer_mask_new (image, width, height, name, &color);
g_free (name);
if (! layer_mask)
return NULL;
/* read in the layer_mask properties */
channel = PIKA_CHANNEL (layer_mask);
if (! xcf_load_channel_props (info, image, &channel))
goto error;
xcf_progress_update (info);
/* read the hierarchy offset */
cur_offset = info->cp;
xcf_read_offset (info, &hierarchy_offset, 1);
if (hierarchy_offset < cur_offset)
{
PIKA_LOG (XCF, "Invalid hierarchy offset!");
goto error;
}
/* read in the hierarchy */
if (! xcf_seek_pos (info, hierarchy_offset, NULL))
goto error;
if (! xcf_load_buffer (info,
pika_drawable_get_buffer (PIKA_DRAWABLE (layer_mask))))
goto error;
xcf_progress_update (info);
/* attach the floating selection... */
if (is_fs_drawable)
info->floating_sel_drawable = PIKA_DRAWABLE (layer_mask);
return layer_mask;
error:
for (iter = info->selected_channels; iter; iter = iter->next)
if (layer_mask == iter->data)
{
info->selected_channels = g_list_delete_link (info->selected_channels, iter);
break;
}
if (info->floating_sel_drawable == PIKA_DRAWABLE (layer_mask))
info->floating_sel_drawable = NULL;
g_object_unref (layer_mask);
return NULL;
}
static gboolean
xcf_load_buffer (XcfInfo *info,
GeglBuffer *buffer)
{
const Babl *format;
goffset offset;
gint width;
gint height;
gint bpp;
goffset cur_offset;
format = gegl_buffer_get_format (buffer);
xcf_read_int32 (info, (guint32 *) &width, 1);
xcf_read_int32 (info, (guint32 *) &height, 1);
xcf_read_int32 (info, (guint32 *) &bpp, 1);
/* make sure the values in the file correspond to the values
* calculated when the GeglBuffer was created.
*/
if (width != gegl_buffer_get_width (buffer) ||
height != gegl_buffer_get_height (buffer) ||
bpp != babl_format_get_bytes_per_pixel (format))
return FALSE;
cur_offset = info->cp;
xcf_read_offset (info, &offset, 1); /* top level */
if (offset < cur_offset)
{
PIKA_LOG (XCF, "Invalid buffer offset!");
return FALSE;
}
/* seek to the level offset */
if (! xcf_seek_pos (info, offset, NULL))
return FALSE;
/* read in the level */
if (! xcf_load_level (info, buffer))
return FALSE;
/* discard levels below first.
*/
return TRUE;
}
static gboolean
xcf_load_level (XcfInfo *info,
GeglBuffer *buffer)
{
const Babl *format;
gint bpp;
goffset saved_pos;
goffset offset;
goffset offset2;
goffset max_data_length;
gint n_tile_rows;
gint n_tile_cols;
guint ntiles;
gint width;
gint height;
gint i;
gint fail;
format = gegl_buffer_get_format (buffer);
bpp = babl_format_get_bytes_per_pixel (format);
xcf_read_int32 (info, (guint32 *) &width, 1);
xcf_read_int32 (info, (guint32 *) &height, 1);
if (width != gegl_buffer_get_width (buffer) ||
height != gegl_buffer_get_height (buffer))
return FALSE;
/* maximal allowable size of on-disk tile data. make it somewhat bigger than
* the uncompressed tile size, to allow for the possibility of negative
* compression.
*/
max_data_length = XCF_TILE_WIDTH * XCF_TILE_HEIGHT * bpp *
XCF_TILE_MAX_DATA_LENGTH_FACTOR /* = 1.5, currently */;
/* read in the first tile offset.
* if it is '0', then this tile level is empty
* and we can simply return.
*/
xcf_read_offset (info, &offset, 1);
if (offset == 0)
return TRUE;
n_tile_rows = pika_gegl_buffer_get_n_tile_rows (buffer, XCF_TILE_HEIGHT);
n_tile_cols = pika_gegl_buffer_get_n_tile_cols (buffer, XCF_TILE_WIDTH);
ntiles = n_tile_rows * n_tile_cols;
for (i = 0; i < ntiles; i++)
{
GeglRectangle rect;
fail = FALSE;
if (offset == 0)
{
pika_message_literal (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"not enough tiles found in level");
return FALSE;
}
/* save the current position as it is where the
* next tile offset is stored.
*/
saved_pos = info->cp;
/* read in the offset of the next tile so we can calculate the amount
* of data needed for this tile
*/
xcf_read_offset (info, &offset2, 1);
/* if the offset is 0 then we need to read in the maximum possible
* allowing for negative compression
*/
if (offset2 == 0)
offset2 = offset + max_data_length;
/* seek to the tile offset */
if (! xcf_seek_pos (info, offset, NULL))
return FALSE;
if (offset2 < offset || offset2 - offset > max_data_length)
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_ERROR,
"invalid tile data length: %" G_GOFFSET_FORMAT,
offset2 - offset);
return FALSE;
}
/* get buffer rectangle to write to */
pika_gegl_buffer_get_tile_rect (buffer,
XCF_TILE_WIDTH, XCF_TILE_HEIGHT,
i, &rect);
PIKA_LOG (XCF, "loading tile %d/%d", i + 1, ntiles);
/* read in the tile */
switch (info->compression)
{
case COMPRESS_NONE:
if (! xcf_load_tile (info, buffer, &rect, format))
fail = TRUE;
break;
case COMPRESS_RLE:
if (! xcf_load_tile_rle (info, buffer, &rect, format,
offset2 - offset))
fail = TRUE;
break;
case COMPRESS_ZLIB:
if (! xcf_load_tile_zlib (info, buffer, &rect, format,
offset2 - offset))
fail = TRUE;
break;
case COMPRESS_FRACTAL:
g_printerr ("xcf: fractal compression unimplemented. "
"Possibly corrupt XCF file.");
fail = TRUE;
break;
default:
g_printerr ("xcf: unknown compression. "
"Possibly corrupt XCF file.");
fail = TRUE;
break;
}
if (fail)
return FALSE;
PIKA_LOG (XCF, "loaded tile %d/%d", i + 1, ntiles);
/* restore the saved position so we'll be ready to
* read the next offset.
*/
if (!xcf_seek_pos (info, saved_pos, NULL))
return FALSE;
/* read in the offset of the next tile */
xcf_read_offset (info, &offset, 1);
}
if (offset != 0)
{
pika_message (info->pika, G_OBJECT (info->progress), PIKA_MESSAGE_ERROR,
"encountered garbage after reading level: %" G_GOFFSET_FORMAT,
offset);
return FALSE;
}
return TRUE;
}
static gboolean
xcf_load_tile (XcfInfo *info,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
const Babl *format)
{
gint bpp = babl_format_get_bytes_per_pixel (format);
gint tile_size = bpp * tile_rect->width * tile_rect->height;
guchar *tile_data = g_alloca (tile_size);
if (info->file_version <= 11)
{
xcf_read_int8 (info, tile_data, tile_size);
}
else
{
gint n_components = babl_format_get_n_components (format);
xcf_read_component (info, bpp / n_components, tile_data,
tile_size / bpp * n_components);
}
if (! xcf_data_is_zero (tile_data, tile_size))
{
gegl_buffer_set (buffer, tile_rect, 0, format, tile_data,
GEGL_AUTO_ROWSTRIDE);
}
return TRUE;
}
static gboolean
xcf_load_tile_rle (XcfInfo *info,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
const Babl *format,
gint data_length)
{
gint bpp = babl_format_get_bytes_per_pixel (format);
gint tile_size = bpp * tile_rect->width * tile_rect->height;
guchar *tile_data = g_alloca (tile_size);
guchar nonzero = FALSE;
gsize bytes_read;
gint i;
guchar *xcfdata;
guchar *xcfodata;
guchar *xcfdatalimit;
/* Workaround for bug #357809: avoid crashing on g_malloc() and skip
* this tile (return TRUE without storing data) as if it did not
* contain any data. It is better than returning FALSE, which would
* skip the whole hierarchy while there may still be some valid
* tiles in the file.
*/
if (data_length <= 0)
return TRUE;
xcfdata = xcfodata = g_alloca (data_length);
/* we have to read directly instead of xcf_read_* because we may be
* reading past the end of the file here
*/
g_input_stream_read_all (info->input, xcfdata, data_length,
&bytes_read, NULL, NULL);
info->cp += bytes_read;
if (bytes_read == 0)
return TRUE;
xcfdatalimit = &xcfodata[bytes_read - 1];
for (i = 0; i < bpp; i++)
{
guchar *data = tile_data + i;
gint size = tile_rect->width * tile_rect->height;
gint count = 0;
guchar val;
gint length;
gint j;
while (size > 0)
{
if (xcfdata > xcfdatalimit)
{
goto bogus_rle;
}
val = *xcfdata++;
length = val;
if (length >= 128)
{
length = 255 - (length - 1);
if (length == 128)
{
if (xcfdata >= xcfdatalimit)
{
goto bogus_rle;
}
length = (*xcfdata << 8) + xcfdata[1];
xcfdata += 2;
}
count += length;
size -= length;
if (size < 0)
{
goto bogus_rle;
}
if (&xcfdata[length-1] > xcfdatalimit)
{
goto bogus_rle;
}
while (length-- > 0)
{
*data = *xcfdata++;
nonzero |= *data;
data += bpp;
}
}
else
{
length += 1;
if (length == 128)
{
if (xcfdata >= xcfdatalimit)
{
goto bogus_rle;
}
length = (*xcfdata << 8) + xcfdata[1];
xcfdata += 2;
}
count += length;
size -= length;
if (size < 0)
{
goto bogus_rle;
}
if (xcfdata > xcfdatalimit)
{
goto bogus_rle;
}
val = *xcfdata++;
nonzero |= val;
for (j = 0; j < length; j++)
{
*data = val;
data += bpp;
}
}
}
}
if (nonzero)
{
if (info->file_version >= 12)
{
gint n_components = babl_format_get_n_components (format);
xcf_read_from_be (bpp / n_components, tile_data,
tile_size / bpp * n_components);
}
gegl_buffer_set (buffer, tile_rect, 0, format, tile_data,
GEGL_AUTO_ROWSTRIDE);
}
return TRUE;
bogus_rle:
return FALSE;
}
static gboolean
xcf_load_tile_zlib (XcfInfo *info,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
const Babl *format,
gint data_length)
{
z_stream strm;
int action;
int status;
gint bpp = babl_format_get_bytes_per_pixel (format);
gint tile_size = bpp * tile_rect->width * tile_rect->height;
guchar *tile_data = g_alloca (tile_size);
gsize bytes_read;
guchar *xcfdata;
/* Workaround for bug #357809: avoid crashing on g_malloc() and skip
* this tile (return TRUE without storing data) as if it did not
* contain any data. It is better than returning FALSE, which would
* skip the whole hierarchy while there may still be some valid
* tiles in the file.
*/
if (data_length <= 0)
return TRUE;
xcfdata = g_alloca (data_length);
/* we have to read directly instead of xcf_read_* because we may be
* reading past the end of the file here
*/
g_input_stream_read_all (info->input, xcfdata, data_length,
&bytes_read, NULL, NULL);
info->cp += bytes_read;
if (bytes_read == 0)
return TRUE;
strm.next_out = tile_data;
strm.avail_out = tile_size;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
strm.next_in = xcfdata;
strm.avail_in = bytes_read;
/* Initialize the stream decompression. */
status = inflateInit (&strm);
if (status != Z_OK)
return FALSE;
action = Z_NO_FLUSH;
while (status == Z_OK)
{
if (strm.avail_in == 0)
{
action = Z_FINISH;
}
status = inflate (&strm, action);
if (status == Z_STREAM_END)
{
/* All the data was successfully decoded. */
break;
}
else if (status == Z_BUF_ERROR)
{
g_printerr ("xcf: decompressed tile bigger than the expected size.");
inflateEnd (&strm);
return FALSE;
}
else if (status != Z_OK)
{
g_printerr ("xcf: tile decompression failed: %s", zError (status));
inflateEnd (&strm);
return FALSE;
}
}
if (! xcf_data_is_zero (tile_data, tile_size))
{
if (info->file_version >= 12)
{
gint n_components = babl_format_get_n_components (format);
xcf_read_from_be (bpp / n_components, tile_data,
tile_size / bpp * n_components);
}
gegl_buffer_set (buffer, tile_rect, 0, format, tile_data,
GEGL_AUTO_ROWSTRIDE);
}
inflateEnd (&strm);
return TRUE;
}
static PikaParasite *
xcf_load_parasite (XcfInfo *info)
{
PikaParasite *parasite = NULL;
gchar *name;
guint32 flags;
guint32 size, size_read;
gpointer data;
xcf_read_string (info, &name, 1);
xcf_read_int32 (info, &flags, 1);
xcf_read_int32 (info, &size, 1);
PIKA_LOG (XCF, "Parasite name: %s, flags: %d, size: %d", name, flags, size);
if (size > MAX_XCF_PARASITE_DATA_LEN)
{
g_printerr ("Maximum parasite data length (%ld bytes) exceeded. "
"Possibly corrupt XCF file.", MAX_XCF_PARASITE_DATA_LEN);
g_free (name);
return NULL;
}
if (!name)
{
g_printerr ("Parasite has no name! Possibly corrupt XCF file.\n");
return NULL;
}
data = g_new (gchar, size);
size_read = xcf_read_int8 (info, data, size);
if (size_read != size)
{
g_printerr ("Incorrect parasite data size: read %u bytes instead of %u. "
"Possibly corrupt XCF file.\n",
size_read, size);
}
else
{
parasite = pika_parasite_new (name, flags, size, data);
}
g_free (name);
g_free (data);
return parasite;
}
/* Old paths are the PROP_PATHS property, even older than PROP_VECTORS. */
static gboolean
xcf_load_old_paths (XcfInfo *info,
PikaImage *image)
{
guint32 num_paths;
guint32 last_selected_row;
PikaVectors *active_vectors;
xcf_read_int32 (info, &last_selected_row, 1);
xcf_read_int32 (info, &num_paths, 1);
PIKA_LOG (XCF, "Number of old paths: %u", num_paths);
while (num_paths-- > 0)
if (! xcf_load_old_path (info, image))
return FALSE;
active_vectors =
PIKA_VECTORS (pika_container_get_child_by_index (pika_image_get_vectors (image),
last_selected_row));
if (active_vectors)
{
GList *list = g_list_prepend (NULL, active_vectors);
pika_image_set_selected_vectors (image, list);
g_list_free (list);
}
return TRUE;
}
static gboolean
xcf_load_old_path (XcfInfo *info,
PikaImage *image)
{
gchar *name;
guint32 locked;
guint8 state;
guint32 closed;
guint32 num_points;
guint32 version; /* changed from num_paths */
PikaTattoo tattoo = 0;
PikaVectors *vectors;
PikaVectorsCompatPoint *points;
gint i;
xcf_read_string (info, &name, 1);
xcf_read_int32 (info, &locked, 1);
xcf_read_int8 (info, &state, 1);
xcf_read_int32 (info, &closed, 1);
xcf_read_int32 (info, &num_points, 1);
xcf_read_int32 (info, &version, 1);
if (version == 2)
{
guint32 dummy;
/* Had extra type field and points are stored as doubles */
xcf_read_int32 (info, (guint32 *) &dummy, 1);
}
else if (version == 3)
{
guint32 dummy;
/* Has extra tattoo field */
xcf_read_int32 (info, (guint32 *) &dummy, 1);
xcf_read_int32 (info, (guint32 *) &tattoo, 1);
}
else if (version != 1)
{
g_printerr ("Unknown path type (version: %u). Possibly corrupt XCF file.\n", version);
g_free (name);
return FALSE;
}
/* skip empty compatibility paths */
if (num_points == 0)
{
g_free (name);
return FALSE;
}
points = g_new0 (PikaVectorsCompatPoint, num_points);
for (i = 0; i < num_points; i++)
{
if (version == 1)
{
gint32 x;
gint32 y;
xcf_read_int32 (info, &points[i].type, 1);
xcf_read_int32 (info, (guint32 *) &x, 1);
xcf_read_int32 (info, (guint32 *) &y, 1);
points[i].x = x;
points[i].y = y;
}
else
{
gfloat x;
gfloat y;
xcf_read_int32 (info, &points[i].type, 1);
xcf_read_float (info, &x, 1);
xcf_read_float (info, &y, 1);
points[i].x = x;
points[i].y = y;
}
}
vectors = pika_vectors_compat_new (image, name, points, num_points, closed);
g_free (name);
g_free (points);
if (locked)
info->linked_paths = g_list_prepend (info->linked_paths, vectors);
if (tattoo)
pika_item_set_tattoo (PIKA_ITEM (vectors), tattoo);
pika_image_add_vectors (image, vectors,
NULL, /* can't be a tree */
pika_container_get_n_children (pika_image_get_vectors (image)),
FALSE);
return TRUE;
}
/* Old vectors are the PROP_VECTORS property up to all PIKA 2.10 versions. */
static gboolean
xcf_load_old_vectors (XcfInfo *info,
PikaImage *image)
{
guint32 version;
guint32 active_index;
guint32 num_paths;
PikaVectors *active_vectors;
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("xcf_load_old_vectors\n");
#endif
xcf_read_int32 (info, &version, 1);
if (version != 1)
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Unknown vectors version: %d (skipping)", version);
return FALSE;
}
xcf_read_int32 (info, &active_index, 1);
xcf_read_int32 (info, &num_paths, 1);
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("%d paths (active: %d)\n", num_paths, active_index);
#endif
while (num_paths-- > 0)
if (! xcf_load_old_vector (info, image))
return FALSE;
/* FIXME tree */
active_vectors =
PIKA_VECTORS (pika_container_get_child_by_index (pika_image_get_vectors (image),
active_index));
if (active_vectors)
{
GList *list = g_list_prepend (NULL, active_vectors);
pika_image_set_selected_vectors (image, list);
g_list_free (list);
}
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("xcf_load_old_vectors: loaded %d bytes\n", info->cp - base);
#endif
return TRUE;
}
static gboolean
xcf_load_old_vector (XcfInfo *info,
PikaImage *image)
{
gchar *name;
PikaTattoo tattoo = 0;
guint32 visible;
guint32 linked;
guint32 num_parasites;
guint32 num_strokes;
PikaVectors *vectors;
gint i;
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("xcf_load_old_vector\n");
#endif
xcf_read_string (info, &name, 1);
xcf_read_int32 (info, &tattoo, 1);
xcf_read_int32 (info, &visible, 1);
xcf_read_int32 (info, &linked, 1);
xcf_read_int32 (info, &num_parasites, 1);
xcf_read_int32 (info, &num_strokes, 1);
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("name: %s, tattoo: %d, visible: %d, linked: %d, "
"num_parasites %d, num_strokes %d\n",
name, tattoo, visible, linked, num_parasites, num_strokes);
#endif
vectors = pika_vectors_new (image, name);
g_free (name);
pika_item_set_visible (PIKA_ITEM (vectors), visible, FALSE);
if (linked)
info->linked_paths = g_list_prepend (info->linked_paths, vectors);
if (tattoo)
pika_item_set_tattoo (PIKA_ITEM (vectors), tattoo);
for (i = 0; i < num_parasites; i++)
{
PikaParasite *parasite = xcf_load_parasite (info);
GError *error = NULL;
if (! parasite)
return FALSE;
if (! pika_item_parasite_validate (PIKA_ITEM (vectors), parasite, &error))
{
pika_message (info->pika, G_OBJECT (info->progress),
PIKA_MESSAGE_WARNING,
"Warning, invalid vectors parasite in XCF file: %s",
error->message);
g_clear_error (&error);
}
else
{
pika_item_parasite_attach (PIKA_ITEM (vectors), parasite, FALSE);
}
pika_parasite_free (parasite);
}
for (i = 0; i < num_strokes; i++)
{
guint32 stroke_type_id;
guint32 closed;
guint32 num_axes;
guint32 num_control_points;
guint32 type;
gfloat coords[13] = PIKA_COORDS_DEFAULT_VALUES;
PikaStroke *stroke;
gint j;
PikaValueArray *control_points;
GValue value = G_VALUE_INIT;
PikaAnchor anchor = { { 0, } };
GType stroke_type;
g_value_init (&value, PIKA_TYPE_ANCHOR);
xcf_read_int32 (info, &stroke_type_id, 1);
xcf_read_int32 (info, &closed, 1);
xcf_read_int32 (info, &num_axes, 1);
xcf_read_int32 (info, &num_control_points, 1);
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("stroke_type: %d, closed: %d, num_axes %d, len %d\n",
stroke_type_id, closed, num_axes, num_control_points);
#endif
switch (stroke_type_id)
{
case XCF_STROKETYPE_BEZIER_STROKE:
stroke_type = PIKA_TYPE_BEZIER_STROKE;
break;
default:
g_printerr ("skipping unknown stroke type\n");
xcf_seek_pos (info,
info->cp + 4 * num_axes * num_control_points,
NULL);
continue;
}
if (num_axes < 2 || num_axes > 6)
{
g_printerr ("bad number of axes in stroke description\n");
return FALSE;
}
control_points = pika_value_array_new (num_control_points);
anchor.selected = FALSE;
for (j = 0; j < num_control_points; j++)
{
xcf_read_int32 (info, &type, 1);
xcf_read_float (info, coords, num_axes);
anchor.type = type;
anchor.position.x = coords[0];
anchor.position.y = coords[1];
anchor.position.pressure = coords[2];
anchor.position.xtilt = coords[3];
anchor.position.ytilt = coords[4];
anchor.position.wheel = coords[5];
g_value_set_boxed (&value, &anchor);
pika_value_array_append (control_points, &value);
#ifdef PIKA_XCF_PATH_DEBUG
g_printerr ("Anchor: %d, (%f, %f, %f, %f, %f, %f)\n", type,
coords[0], coords[1], coords[2], coords[3],
coords[4], coords[5]);
#endif
}
g_value_unset (&value);
stroke = g_object_new (stroke_type,
"closed", closed,
"control-points", control_points,
NULL);
pika_vectors_stroke_add (vectors, stroke);
g_object_unref (stroke);
pika_value_array_unref (control_points);
}
pika_image_add_vectors (image, vectors,
NULL, /* FIXME tree */
pika_container_get_n_children (pika_image_get_vectors (image)),
FALSE);
return TRUE;
}
static gboolean
xcf_skip_unknown_prop (XcfInfo *info,
gsize size)
{
guint8 buf[16];
guint amount;
while (size > 0)
{
if (g_input_stream_is_closed (info->input))
return FALSE;
amount = MIN (16, size);
amount = xcf_read_int8 (info, buf, amount);
if (amount == 0)
return FALSE;
size -= amount;
}
return TRUE;
}
static gboolean
xcf_item_path_is_parent (GList *path,
GList *parent_path)
{
GList *iter = path;
GList *parent_iter = parent_path;
if (g_list_length (parent_path) >= g_list_length (path))
return FALSE;
while (iter && parent_iter)
{
if (iter->data != parent_iter->data)
return FALSE;
iter = iter->next;
parent_iter = parent_iter->next;
}
return TRUE;
}
static void
xcf_fix_item_path (PikaLayer *layer,
GList **path,
GList *broken_paths)
{
GList *iter;
for (iter = broken_paths; iter; iter = iter->next)
{
if (xcf_item_path_is_parent (*path, iter->data))
{
/* Not much to do when the absent path is a parent. */
g_printerr ("%s: layer '%s' moved to layer tree root because of missing parent.",
G_STRFUNC, pika_object_get_name (layer));
g_clear_pointer (path, g_list_free);
return;
}
}
/* Check if a parent of path, or path itself is on the same
* tree level as any broken path; and if so, and if the broken path is
* in a lower position in the item group, decrement it.
*/
for (iter = broken_paths; iter; iter = iter->next)
{
GList *broken_path = iter->data;
GList *iter1 = *path;
GList *iter2 = broken_path;
if (g_list_length (broken_path) > g_list_length (*path))
continue;
while (iter1 && iter2)
{
if (iter2->next && iter1->data != iter2->data)
/* Paths diverged before reaching iter2 leaf. */
break;
if (iter2->next)
{
iter1 = iter1->next;
iter2 = iter2->next;
continue;
}
if (GPOINTER_TO_UINT (iter2->data) < GPOINTER_TO_UINT (iter1->data))
iter1->data = GUINT_TO_POINTER (GPOINTER_TO_UINT (iter1->data) - 1);
break;
}
}
}