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gimp/app/core/gimpgrid.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpGrid
* Copyright (C) 2003 Henrik Brix Andersen <brix@gimp.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h> /* strcmp */
#include <glib-object.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpbase/gimplimits.h"
#include "libgimpcolor/gimpcolor.h"
#include "core-types.h"
#include "config/gimpconfig.h"
#include "config/gimpconfig-params.h"
#include "gimpgrid.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_STYLE,
PROP_FGCOLOR,
PROP_BGCOLOR,
PROP_XSPACING,
PROP_YSPACING,
PROP_SPACING_UNIT,
PROP_XOFFSET,
PROP_YOFFSET,
PROP_OFFSET_UNIT
};
static void gimp_grid_class_init (GimpGridClass *klass);
static void gimp_grid_finalize (GObject *object);
static void gimp_grid_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_grid_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static GimpObjectClass *parent_class = NULL;
GType
gimp_grid_get_type (void)
{
static GType grid_type = 0;
if (! grid_type)
{
static const GTypeInfo grid_info =
{
sizeof (GimpGridClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_grid_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpGrid),
0, /* n_preallocs */
NULL /* instance_init */
};
static const GInterfaceInfo grid_iface_info =
{
NULL, /* iface_init */
NULL, /* iface_finalize */
NULL /* iface_data */
};
grid_type = g_type_register_static (GIMP_TYPE_OBJECT,
"GimpGrid", &grid_info, 0);
g_type_add_interface_static (grid_type, GIMP_TYPE_CONFIG,
&grid_iface_info);
}
return grid_type;
}
static void
gimp_grid_class_init (GimpGridClass *klass)
{
GObjectClass *object_class;
GimpRGB black;
GimpRGB white;
object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_grid_finalize;
object_class->get_property = gimp_grid_get_property;
object_class->set_property = gimp_grid_set_property;
gimp_rgba_set (&black, 0.0, 0.0, 0.0, GIMP_OPACITY_OPAQUE);
gimp_rgba_set (&white, 1.0, 1.0, 1.0, GIMP_OPACITY_OPAQUE);
GIMP_CONFIG_INSTALL_PROP_ENUM (object_class, PROP_STYLE,
"style",
N_("Line style used for the grid."),
GIMP_TYPE_GRID_STYLE,
GIMP_GRID_INTERSECTIONS,
0);
GIMP_CONFIG_INSTALL_PROP_COLOR (object_class, PROP_FGCOLOR,
"fgcolor",
N_("The foreground color of the grid."),
&black,
0);
GIMP_CONFIG_INSTALL_PROP_COLOR (object_class, PROP_BGCOLOR,
"bgcolor",
N_("The background color of the grid; "
"only used in double dashed line style."),
&white,
0);
GIMP_CONFIG_INSTALL_PROP_DOUBLE (object_class, PROP_XSPACING,
"xspacing",
N_("Horizontal spacing of grid lines."),
1.0, GIMP_MAX_IMAGE_SIZE, 10.0,
0);
GIMP_CONFIG_INSTALL_PROP_DOUBLE (object_class, PROP_YSPACING,
"yspacing",
N_("Vertical spacing of grid lines."),
1.0, GIMP_MAX_IMAGE_SIZE, 10.0,
0);
GIMP_CONFIG_INSTALL_PROP_UNIT (object_class, PROP_SPACING_UNIT,
"spacing-unit", NULL,
FALSE, FALSE, GIMP_UNIT_INCH,
0);
GIMP_CONFIG_INSTALL_PROP_DOUBLE (object_class, PROP_XOFFSET,
"xoffset",
N_("Horizontal offset of the first grid "
"line; this may be a negative number."),
- GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0.0,
0);
GIMP_CONFIG_INSTALL_PROP_DOUBLE (object_class, PROP_YOFFSET,
"yoffset",
N_("Vertical offset of the first grid "
"line; this may be a negative number."),
- GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0.0,
0);
GIMP_CONFIG_INSTALL_PROP_UNIT (object_class, PROP_OFFSET_UNIT,
"offset-unit", NULL,
FALSE, FALSE, GIMP_UNIT_INCH,
0);
}
static void
gimp_grid_finalize (GObject *object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_grid_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpGrid *grid = GIMP_GRID (object);
switch (property_id)
{
case PROP_STYLE:
g_value_set_enum (value, grid->style);
break;
case PROP_FGCOLOR:
g_value_set_boxed (value, &grid->fgcolor);
break;
case PROP_BGCOLOR:
g_value_set_boxed (value, &grid->bgcolor);
break;
case PROP_XSPACING:
g_value_set_double (value, grid->xspacing);
break;
case PROP_YSPACING:
g_value_set_double (value, grid->yspacing);
break;
case PROP_SPACING_UNIT:
g_value_set_int (value, grid->spacing_unit);
break;
case PROP_XOFFSET:
g_value_set_double (value, grid->xoffset);
break;
case PROP_YOFFSET:
g_value_set_double (value, grid->yoffset);
break;
case PROP_OFFSET_UNIT:
g_value_set_int (value, grid->offset_unit);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_grid_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpGrid *grid = GIMP_GRID (object);
GimpRGB *color;
switch (property_id)
{
case PROP_STYLE:
grid->style = g_value_get_enum (value);
break;
case PROP_FGCOLOR:
color = g_value_get_boxed (value);
grid->fgcolor = *color;
break;
case PROP_BGCOLOR:
color = g_value_get_boxed (value);
grid->bgcolor = *color;
break;
case PROP_XSPACING:
grid->xspacing = g_value_get_double (value);
break;
case PROP_YSPACING:
grid->yspacing = g_value_get_double (value);
break;
case PROP_SPACING_UNIT:
grid->spacing_unit = g_value_get_int (value);
break;
case PROP_XOFFSET:
grid->xoffset = g_value_get_double (value);
break;
case PROP_YOFFSET:
grid->yoffset = g_value_get_double (value);
break;
case PROP_OFFSET_UNIT:
grid->offset_unit = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
const gchar *
gimp_grid_parasite_name (void)
{
return "gimp-image-grid";
}
GimpParasite *
gimp_grid_to_parasite (const GimpGrid *grid)
{
GimpParasite *parasite;
gchar *str;
g_return_val_if_fail (GIMP_IS_GRID (grid), NULL);
str = gimp_config_serialize_to_string (GIMP_CONFIG (grid), NULL);
g_return_val_if_fail (str != NULL, NULL);
parasite = gimp_parasite_new (gimp_grid_parasite_name (),
GIMP_PARASITE_PERSISTENT,
strlen (str) + 1, str);
g_free (str);
return parasite;
}
GimpGrid *
gimp_grid_from_parasite (const GimpParasite *parasite)
{
GimpGrid *grid;
const gchar *str;
GError *error = NULL;
g_return_val_if_fail (parasite != NULL, NULL);
g_return_val_if_fail (strcmp (gimp_parasite_name (parasite),
gimp_grid_parasite_name ()) == 0, NULL);
str = gimp_parasite_data (parasite);
g_return_val_if_fail (str != NULL, NULL);
grid = g_object_new (GIMP_TYPE_GRID, NULL);
if (! gimp_config_deserialize_string (GIMP_CONFIG (grid),
str,
gimp_parasite_data_size (parasite),
NULL,
&error))
{
g_warning ("Failed to deserialize grid parasite: %s", error->message);
g_error_free (error);
}
return grid;
}
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