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gimp/app/pdb/gimppdb-utils.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-2003 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "pdb-types.h"
#include "core/gimp.h"
#include "core/gimpbrushgenerated.h"
#include "core/gimpchannel.h"
#include "core/gimpcontainer.h"
#include "core/gimpdatafactory.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-sample-points.h"
#include "core/gimpitem.h"
#include "text/gimptextlayer.h"
#include "vectors/gimpvectors.h"
#include "gimppdb-utils.h"
#include "gimppdberror.h"
#include "gimp-intl.h"
static GimpObject *
gimp_pdb_get_data_factory_item (GimpDataFactory *data_factory,
const gchar *name)
{
GimpObject *gimp_object;
gimp_object = gimp_container_get_child_by_name (gimp_data_factory_get_container (data_factory), name);
if (! gimp_object)
gimp_object = gimp_container_get_child_by_name (gimp_data_factory_get_container_obsolete (data_factory), name);
return gimp_object;
}
GimpBrush *
gimp_pdb_get_brush (Gimp *gimp,
const gchar *name,
GimpPDBDataAccess access,
GError **error)
{
GimpBrush *brush;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty brush name"));
return NULL;
}
brush = (GimpBrush *) gimp_pdb_get_data_factory_item (gimp->brush_factory, name);
if (! brush)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Brush '%s' not found"), name);
}
else if ((access & GIMP_PDB_DATA_ACCESS_WRITE) &&
! gimp_data_is_writable (GIMP_DATA (brush)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Brush '%s' is not editable"), name);
return NULL;
}
else if ((access & GIMP_PDB_DATA_ACCESS_RENAME) &&
! gimp_viewable_is_name_editable (GIMP_VIEWABLE (brush)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Brush '%s' is not renamable"), name);
return NULL;
}
return brush;
}
GimpBrush *
gimp_pdb_get_generated_brush (Gimp *gimp,
const gchar *name,
GimpPDBDataAccess access,
GError **error)
{
GimpBrush *brush;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
brush = gimp_pdb_get_brush (gimp, name, access, error);
if (! brush)
return NULL;
if (! GIMP_IS_BRUSH_GENERATED (brush))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Brush '%s' is not a generated brush"), name);
return NULL;
}
return brush;
}
GimpDynamics *
gimp_pdb_get_dynamics (Gimp *gimp,
const gchar *name,
GimpPDBDataAccess access,
GError **error)
{
GimpDynamics *dynamics;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty paint dynamics name"));
return NULL;
}
dynamics = (GimpDynamics *) gimp_pdb_get_data_factory_item (gimp->dynamics_factory, name);
if (! dynamics)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Paint dynamics '%s' not found"), name);
}
else if ((access & GIMP_PDB_DATA_ACCESS_WRITE) &&
! gimp_data_is_writable (GIMP_DATA (dynamics)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Paint dynamics '%s' is not editable"), name);
return NULL;
}
else if ((access & GIMP_PDB_DATA_ACCESS_RENAME) &&
! gimp_viewable_is_name_editable (GIMP_VIEWABLE (dynamics)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Paint dynamics '%s' is not renamable"), name);
return NULL;
}
return dynamics;
}
GimpMybrush *
gimp_pdb_get_mybrush (Gimp *gimp,
const gchar *name,
GimpPDBDataAccess access,
GError **error)
{
GimpMybrush *brush;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty MyPaint brush name"));
return NULL;
}
brush = (GimpMybrush *) gimp_pdb_get_data_factory_item (gimp->mybrush_factory, name);
if (! brush)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("MyPaint brush '%s' not found"), name);
}
else if ((access & GIMP_PDB_DATA_ACCESS_WRITE) &&
! gimp_data_is_writable (GIMP_DATA (brush)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("MyPaint brush '%s' is not editable"), name);
return NULL;
}
else if ((access & GIMP_PDB_DATA_ACCESS_RENAME) &&
! gimp_viewable_is_name_editable (GIMP_VIEWABLE (brush)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("MyPaint brush '%s' is not renamable"), name);
return NULL;
}
return brush;
}
GimpPattern *
gimp_pdb_get_pattern (Gimp *gimp,
const gchar *name,
GError **error)
{
GimpPattern *pattern;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty pattern name"));
return NULL;
}
pattern = (GimpPattern *) gimp_pdb_get_data_factory_item (gimp->pattern_factory, name);
if (! pattern)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Pattern '%s' not found"), name);
}
return pattern;
}
GimpGradient *
gimp_pdb_get_gradient (Gimp *gimp,
const gchar *name,
GimpPDBDataAccess access,
GError **error)
{
GimpGradient *gradient;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty gradient name"));
return NULL;
}
gradient = (GimpGradient *) gimp_pdb_get_data_factory_item (gimp->gradient_factory, name);
if (! gradient)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Gradient '%s' not found"), name);
}
else if ((access & GIMP_PDB_DATA_ACCESS_WRITE) &&
! gimp_data_is_writable (GIMP_DATA (gradient)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Gradient '%s' is not editable"), name);
return NULL;
}
else if ((access & GIMP_PDB_DATA_ACCESS_RENAME) &&
! gimp_viewable_is_name_editable (GIMP_VIEWABLE (gradient)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Gradient '%s' is not renamable"), name);
return NULL;
}
return gradient;
}
GimpPalette *
gimp_pdb_get_palette (Gimp *gimp,
const gchar *name,
GimpPDBDataAccess access,
GError **error)
{
GimpPalette *palette;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty palette name"));
return NULL;
}
palette = (GimpPalette *) gimp_pdb_get_data_factory_item (gimp->palette_factory, name);
if (! palette)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Palette '%s' not found"), name);
}
else if ((access & GIMP_PDB_DATA_ACCESS_WRITE) &&
! gimp_data_is_writable (GIMP_DATA (palette)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Palette '%s' is not editable"), name);
return NULL;
}
else if ((access & GIMP_PDB_DATA_ACCESS_RENAME) &&
! gimp_viewable_is_name_editable (GIMP_VIEWABLE (palette)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Palette '%s' is not renamable"), name);
return NULL;
}
return palette;
}
GimpFont *
gimp_pdb_get_font (Gimp *gimp,
const gchar *name,
GError **error)
{
GimpFont *font;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty font name"));
return NULL;
}
font = (GimpFont *)
gimp_container_get_child_by_name (gimp->fonts, name);
if (! font)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Font '%s' not found"), name);
}
return font;
}
GimpBuffer *
gimp_pdb_get_buffer (Gimp *gimp,
const gchar *name,
GError **error)
{
GimpBuffer *buffer;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty buffer name"));
return NULL;
}
buffer = (GimpBuffer *)
gimp_container_get_child_by_name (gimp->named_buffers, name);
if (! buffer)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Named buffer '%s' not found"), name);
}
return buffer;
}
GimpPaintInfo *
gimp_pdb_get_paint_info (Gimp *gimp,
const gchar *name,
GError **error)
{
GimpPaintInfo *paint_info;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! name || ! strlen (name))
{
g_set_error_literal (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Invalid empty paint method name"));
return NULL;
}
paint_info = (GimpPaintInfo *)
gimp_container_get_child_by_name (gimp->paint_info_list, name);
if (! paint_info)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Paint method '%s' does not exist"), name);
}
return paint_info;
}
gboolean
gimp_pdb_item_is_attached (GimpItem *item,
GimpImage *image,
GimpPDBItemModify modify,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (image == NULL || GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! gimp_item_is_attached (item))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be used because it has not "
"been added to an image"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
if (image && image != gimp_item_get_image (item))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be used because it is "
"attached to another image"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
return gimp_pdb_item_is_modifiable (item, modify, error);
}
gboolean
gimp_pdb_item_is_in_tree (GimpItem *item,
GimpImage *image,
GimpPDBItemModify modify,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (image == NULL || GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! gimp_pdb_item_is_attached (item, image, modify, error))
return FALSE;
if (! gimp_item_get_tree (item))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be used because it is not "
"a direct child of an item tree"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_item_is_in_same_tree (GimpItem *item,
GimpItem *item2,
GimpImage *image,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (GIMP_IS_ITEM (item2), FALSE);
g_return_val_if_fail (image == NULL || GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! gimp_pdb_item_is_in_tree (item, image, FALSE, error) ||
! gimp_pdb_item_is_in_tree (item2, image, FALSE, error))
return FALSE;
if (gimp_item_get_tree (item) != gimp_item_get_tree (item2))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Items '%s' (%d) and '%s' (%d) cannot be used "
"because they are not part of the same item tree"),
gimp_object_get_name (item),
gimp_item_get_ID (item),
gimp_object_get_name (item2),
gimp_item_get_ID (item2));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_item_is_not_ancestor (GimpItem *item,
GimpItem *not_descendant,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (GIMP_IS_ITEM (not_descendant), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (gimp_viewable_is_ancestor (GIMP_VIEWABLE (item),
GIMP_VIEWABLE (not_descendant)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) must not be an ancestor of "
"'%s' (%d)"),
gimp_object_get_name (item),
gimp_item_get_ID (item),
gimp_object_get_name (not_descendant),
gimp_item_get_ID (not_descendant));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_item_is_floating (GimpItem *item,
GimpImage *dest_image,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (GIMP_IS_IMAGE (dest_image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! g_object_is_floating (item))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) has already been added to an image"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
else if (gimp_item_get_image (item) != dest_image)
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Trying to add item '%s' (%d) to wrong image"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_item_is_modifiable (GimpItem *item,
GimpPDBItemModify modify,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/* When a channel is position-locked, it is also implicitly
* content-locked because we translate channels by modifying their
* pixels.
*/
if ((modify & GIMP_PDB_ITEM_POSITION) && GIMP_IS_CHANNEL (item))
modify |= GIMP_PDB_ITEM_CONTENT;
if ((modify & GIMP_PDB_ITEM_CONTENT) && gimp_item_is_content_locked (item))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be modified because its "
"contents are locked"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
if ((modify & GIMP_PDB_ITEM_POSITION) && gimp_item_is_position_locked (item))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be modified because its "
"position and size are locked"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_item_is_group (GimpItem *item,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! gimp_viewable_get_children (GIMP_VIEWABLE (item)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be used because it is "
"not a group item"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_item_is_not_group (GimpItem *item,
GError **error)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (gimp_viewable_get_children (GIMP_VIEWABLE (item)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Item '%s' (%d) cannot be modified because it "
"is a group item"),
gimp_object_get_name (item),
gimp_item_get_ID (item));
return FALSE;
}
return TRUE;
}
gboolean
gimp_pdb_layer_is_text_layer (GimpLayer *layer,
GimpPDBItemModify modify,
GError **error)
{
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! gimp_item_is_text_layer (GIMP_ITEM (layer)))
{
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Layer '%s' (%d) cannot be used because it is not "
"a text layer"),
gimp_object_get_name (layer),
gimp_item_get_ID (GIMP_ITEM (layer)));
return FALSE;
}
return gimp_pdb_item_is_attached (GIMP_ITEM (layer), NULL, modify, error);
}
static const gchar *
gimp_pdb_enum_value_get_nick (GType enum_type,
gint value)
{
GEnumClass *enum_class;
GEnumValue *enum_value;
const gchar *nick;
enum_class = g_type_class_ref (enum_type);
enum_value = g_enum_get_value (enum_class, value);
nick = enum_value->value_nick;
g_type_class_unref (enum_class);
return nick;
}
gboolean
gimp_pdb_image_is_base_type (GimpImage *image,
GimpImageBaseType type,
GError **error)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (gimp_image_get_base_type (image) == type)
return TRUE;
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Image '%s' (%d) is of type '%s', "
"but an image of type '%s' is expected"),
gimp_image_get_display_name (image),
gimp_image_get_ID (image),
gimp_pdb_enum_value_get_nick (GIMP_TYPE_IMAGE_BASE_TYPE,
gimp_image_get_base_type (image)),
gimp_pdb_enum_value_get_nick (GIMP_TYPE_IMAGE_BASE_TYPE, type));
return FALSE;
}
gboolean
gimp_pdb_image_is_not_base_type (GimpImage *image,
GimpImageBaseType type,
GError **error)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (gimp_image_get_base_type (image) != type)
return TRUE;
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Image '%s' (%d) must not be of type '%s'"),
gimp_image_get_display_name (image),
gimp_image_get_ID (image),
gimp_pdb_enum_value_get_nick (GIMP_TYPE_IMAGE_BASE_TYPE, type));
return FALSE;
}
gboolean
gimp_pdb_image_is_precision (GimpImage *image,
GimpPrecision precision,
GError **error)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (gimp_image_get_precision (image) == precision)
return TRUE;
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Image '%s' (%d) has precision '%s', "
"but an image of precision '%s' is expected"),
gimp_image_get_display_name (image),
gimp_image_get_ID (image),
gimp_pdb_enum_value_get_nick (GIMP_TYPE_PRECISION,
gimp_image_get_precision (image)),
gimp_pdb_enum_value_get_nick (GIMP_TYPE_PRECISION, precision));
return FALSE;
}
gboolean
gimp_pdb_image_is_not_precision (GimpImage *image,
GimpPrecision precision,
GError **error)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (gimp_image_get_precision (image) != precision)
return TRUE;
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Image '%s' (%d) must not be of precision '%s'"),
gimp_image_get_display_name (image),
gimp_image_get_ID (image),
gimp_pdb_enum_value_get_nick (GIMP_TYPE_PRECISION, precision));
return FALSE;
}
GimpGuide *
gimp_pdb_image_get_guide (GimpImage *image,
gint guide_ID,
GError **error)
{
GimpGuide *guide;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
guide = gimp_image_get_guide (image, guide_ID);
if (guide)
return guide;
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Image '%s' (%d) does not contain guide with ID %d"),
gimp_image_get_display_name (image),
gimp_image_get_ID (image),
guide_ID);
return NULL;
}
GimpSamplePoint *
gimp_pdb_image_get_sample_point (GimpImage *image,
gint sample_point_ID,
GError **error)
{
GimpSamplePoint *sample_point;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
sample_point = gimp_image_get_sample_point (image, sample_point_ID);
if (sample_point)
return sample_point;
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Image '%s' (%d) does not contain sample point with ID %d"),
gimp_image_get_display_name (image),
gimp_image_get_ID (image),
sample_point_ID);
return NULL;
}
GimpStroke *
gimp_pdb_get_vectors_stroke (GimpVectors *vectors,
gint stroke_ID,
GimpPDBItemModify modify,
GError **error)
{
GimpStroke *stroke = NULL;
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! gimp_pdb_item_is_not_group (GIMP_ITEM (vectors), error))
return NULL;
if (! modify || gimp_pdb_item_is_modifiable (GIMP_ITEM (vectors),
modify, error))
{
stroke = gimp_vectors_stroke_get_by_ID (vectors, stroke_ID);
if (! stroke)
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Vectors object %d does not contain stroke with ID %d"),
gimp_item_get_ID (GIMP_ITEM (vectors)), stroke_ID);
}
return stroke;
}
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