gimp/app/display/gimpcanvasitem.h

148 lines
7.1 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvasitem.h
* Copyright (C) 2010 Michael Natterer <mitch@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/>.
*/
#ifndef __GIMP_CANVAS_ITEM_H__
#define __GIMP_CANVAS_ITEM_H__
#include "core/gimpobject.h"
#define GIMP_TYPE_CANVAS_ITEM (gimp_canvas_item_get_type ())
#define GIMP_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_ITEM, GimpCanvasItem))
#define GIMP_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_ITEM, GimpCanvasItemClass))
#define GIMP_IS_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_ITEM))
#define GIMP_IS_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_ITEM))
#define GIMP_CANVAS_ITEM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_ITEM, GimpCanvasItemClass))
typedef struct _GimpCanvasItemPrivate GimpCanvasItemPrivate;
typedef struct _GimpCanvasItemClass GimpCanvasItemClass;
struct _GimpCanvasItem
{
GimpObject parent_instance;
GimpCanvasItemPrivate *private;
};
struct _GimpCanvasItemClass
{
GimpObjectClass parent_class;
/* signals */
void (* update) (GimpCanvasItem *item,
cairo_region_t *region);
/* virtual functions */
void (* draw) (GimpCanvasItem *item,
cairo_t *cr);
cairo_region_t * (* get_extents) (GimpCanvasItem *item);
void (* stroke) (GimpCanvasItem *item,
cairo_t *cr);
void (* fill) (GimpCanvasItem *item,
cairo_t *cr);
gboolean (* hit) (GimpCanvasItem *item,
gdouble x,
gdouble y);
};
GType gimp_canvas_item_get_type (void) G_GNUC_CONST;
GimpDisplayShell * gimp_canvas_item_get_shell (GimpCanvasItem *item);
GimpImage * gimp_canvas_item_get_image (GimpCanvasItem *item);
GtkWidget * gimp_canvas_item_get_canvas (GimpCanvasItem *item);
void gimp_canvas_item_draw (GimpCanvasItem *item,
cairo_t *cr);
cairo_region_t * gimp_canvas_item_get_extents (GimpCanvasItem *item);
gboolean gimp_canvas_item_hit (GimpCanvasItem *item,
gdouble x,
gdouble y);
void gimp_canvas_item_set_visible (GimpCanvasItem *item,
gboolean visible);
gboolean gimp_canvas_item_get_visible (GimpCanvasItem *item);
void gimp_canvas_item_set_line_cap (GimpCanvasItem *item,
cairo_line_cap_t line_cap);
void gimp_canvas_item_set_highlight (GimpCanvasItem *item,
gboolean highlight);
gboolean gimp_canvas_item_get_highlight (GimpCanvasItem *item);
void gimp_canvas_item_begin_change (GimpCanvasItem *item);
void gimp_canvas_item_end_change (GimpCanvasItem *item);
void gimp_canvas_item_suspend_stroking (GimpCanvasItem *item);
void gimp_canvas_item_resume_stroking (GimpCanvasItem *item);
void gimp_canvas_item_suspend_filling (GimpCanvasItem *item);
void gimp_canvas_item_resume_filling (GimpCanvasItem *item);
void gimp_canvas_item_transform (GimpCanvasItem *item,
cairo_t *cr);
void gimp_canvas_item_transform_xy (GimpCanvasItem *item,
gdouble x,
gdouble y,
gint *tx,
gint *ty);
void gimp_canvas_item_transform_xy_f (GimpCanvasItem *item,
gdouble x,
gdouble y,
gdouble *tx,
gdouble *ty);
gdouble gimp_canvas_item_transform_distance
(GimpCanvasItem *item,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2);
gdouble gimp_canvas_item_transform_distance_square
(GimpCanvasItem *item,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2);
void gimp_canvas_item_untransform_viewport
(GimpCanvasItem *item,
gint *x,
gint *y,
gint *w,
gint *h);
/* protected */
void _gimp_canvas_item_update (GimpCanvasItem *item,
cairo_region_t *region);
gboolean _gimp_canvas_item_needs_update (GimpCanvasItem *item);
void _gimp_canvas_item_stroke (GimpCanvasItem *item,
cairo_t *cr);
void _gimp_canvas_item_fill (GimpCanvasItem *item,
cairo_t *cr);
#endif /* __GIMP_CANVAS_ITEM_H__ */