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gimp/app/core/gimpgrid.c

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/* GIMP - The GNU 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 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <cairo.h>
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpcolor/gimpcolor.h"
#include "core-types.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_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);
G_DEFINE_TYPE_WITH_CODE (GimpGrid, gimp_grid, GIMP_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONFIG, NULL))
#define parent_class gimp_grid_parent_class
static void
gimp_grid_class_init (GimpGridClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GeglColor *black = gegl_color_new ("black");
GeglColor *white = gegl_color_new ("white");
object_class->finalize = gimp_grid_finalize;
object_class->get_property = gimp_grid_get_property;
object_class->set_property = gimp_grid_set_property;
GIMP_CONFIG_PROP_ENUM (object_class, PROP_STYLE,
"style",
_("Line style"),
_("Line style used for the grid."),
GIMP_TYPE_GRID_STYLE,
GIMP_GRID_SOLID,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_COLOR (object_class, PROP_FGCOLOR,
"fgcolor",
_("Foreground color"),
_("The foreground color of the grid."),
TRUE, black,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_COLOR (object_class, PROP_BGCOLOR,
"bgcolor",
_("Background color"),
_("The background color of the grid; "
"only used in double dashed line style."),
TRUE, white,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_XSPACING,
"xspacing",
_("Spacing X"),
_("Horizontal spacing of grid lines."),
0.0, GIMP_MAX_IMAGE_SIZE, 10.0,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_YSPACING,
"yspacing",
_("Spacing Y"),
_("Vertical spacing of grid lines."),
0.0, GIMP_MAX_IMAGE_SIZE, 10.0,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_UNIT (object_class, PROP_SPACING_UNIT,
"spacing-unit",
_("Spacing unit"),
NULL,
FALSE, FALSE, gimp_unit_inch (),
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_XOFFSET,
"xoffset",
_("Offset X"),
_("Horizontal offset of the first grid "
"line; this may be a negative number."),
- GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0.0,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_YOFFSET,
"yoffset",
_("Offset Y"),
_("Vertical offset of the first grid "
"line; this may be a negative number."),
- GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0.0,
GIMP_PARAM_STATIC_STRINGS);
GIMP_CONFIG_PROP_UNIT (object_class, PROP_OFFSET_UNIT,
"offset-unit",
_("Offset unit"),
NULL,
FALSE, FALSE, gimp_unit_inch (),
GIMP_PARAM_STATIC_STRINGS);
g_object_unref (black);
g_object_unref (white);
}
static void
gimp_grid_init (GimpGrid *grid)
{
grid->fgcolor = gegl_color_new ("black");
grid->bgcolor = gegl_color_new ("white");
}
static void
gimp_grid_finalize (GObject *object)
{
GimpGrid *grid = GIMP_GRID (object);
g_object_unref (grid->fgcolor);
g_object_unref (grid->bgcolor);
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_object (value, grid->fgcolor);
break;
case PROP_BGCOLOR:
g_value_set_object (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_object (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_object (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);
switch (property_id)
{
case PROP_STYLE:
grid->style = g_value_get_enum (value);
break;
case PROP_FGCOLOR:
g_clear_object (&grid->fgcolor);
grid->fgcolor = gegl_color_duplicate (g_value_get_object (value));
break;
case PROP_BGCOLOR:
g_clear_object (&grid->bgcolor);
grid->bgcolor = gegl_color_duplicate (g_value_get_object (value));
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_object (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_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/* public functions */
GimpGridStyle
gimp_grid_get_style (GimpGrid *grid)
{
g_return_val_if_fail (GIMP_IS_GRID (grid), GIMP_GRID_SOLID);
return grid->style;
}
GeglColor *
gimp_grid_get_fgcolor (GimpGrid *grid)
{
g_return_val_if_fail (GIMP_IS_GRID (grid), NULL);
return grid->fgcolor;
}
GeglColor *
gimp_grid_get_bgcolor (GimpGrid *grid)
{
g_return_val_if_fail (GIMP_IS_GRID (grid), NULL);
return grid->bgcolor;
}
void
gimp_grid_get_spacing (GimpGrid *grid,
gdouble *xspacing,
gdouble *yspacing)
{
g_return_if_fail (GIMP_IS_GRID (grid));
if (xspacing) *xspacing = grid->xspacing;
if (yspacing) *yspacing = grid->yspacing;
}
void
gimp_grid_get_offset (GimpGrid *grid,
gdouble *xoffset,
gdouble *yoffset)
{
g_return_if_fail (GIMP_IS_GRID (grid));
if (xoffset) *xoffset = grid->xoffset;
if (yoffset) *yoffset = grid->yoffset;
}
const gchar *
gimp_grid_parasite_name (void)
{
return "gimp-image-grid";
}
GimpParasite *
gimp_grid_to_parasite (GimpGrid *grid)
{
g_return_val_if_fail (GIMP_IS_GRID (grid), NULL);
return gimp_config_serialize_to_parasite (GIMP_CONFIG (grid),
gimp_grid_parasite_name (),
GIMP_PARASITE_PERSISTENT,
NULL);
}
GimpGrid *
gimp_grid_from_parasite (const GimpParasite *parasite)
{
GimpGrid *grid;
GError *error = NULL;
g_return_val_if_fail (parasite != NULL, NULL);
g_return_val_if_fail (strcmp (gimp_parasite_get_name (parasite),
gimp_grid_parasite_name ()) == 0, NULL);
if (! gimp_parasite_get_data (parasite, NULL))
{
g_warning ("Empty grid parasite");
return NULL;
}
grid = g_object_new (GIMP_TYPE_GRID, NULL);
if (! gimp_config_deserialize_parasite (GIMP_CONFIG (grid),
parasite,
NULL,
&error))
{
g_warning ("Failed to deserialize grid parasite: %s", error->message);
g_error_free (error);
}
return grid;
}
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