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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_SP_CANVAS_ITEM_H
#define SEEN_SP_CANVAS_ITEM_H
/**
* @file
* SPCanvasItem.
*/
/*
* Authors:
* Federico Mena <federico@nuclecu.unam.mx>
* Raph Levien <raph@gimp.org>
* Lauris Kaplinski <lauris@kaplinski.com>
* Jon A. Cruz <jon@joncruz.org>
*
* Copyright (C) 1998 The Free Software Foundation
* Copyright (C) 2002 Lauris Kaplinski
* Copyright (C) 2010 authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <2geom/rect.h>
#include <boost/intrusive/list.hpp>
#include <glib-object.h>
#include "ui/control-types.h"
G_BEGIN_DECLS
struct SPCanvas;
struct SPCanvasBuf;
struct SPCanvasGroup;
typedef struct _SPCanvasItemClass SPCanvasItemClass;
typedef union _GdkEvent GdkEvent;
typedef struct _GdkCursor GdkCursor;
#define SP_TYPE_CANVAS_ITEM (sp_canvas_item_get_type())
#define SP_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), SP_TYPE_CANVAS_ITEM, SPCanvasItem))
#define SP_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), SP_TYPE_CANVAS_ITEM, SPCanvasItemClass))
#define SP_IS_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), SP_TYPE_CANVAS_ITEM))
#define SP_CANVAS_ITEM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS((o), SP_TYPE_CANVAS_ITEM, SPCanvasItemClass))
/**
* An SPCanvasItem refers to a SPCanvas and to its parent item; it has
* four coordinates, a bounding rectangle, and a transformation matrix.
*/
struct SPCanvasItem {
GInitiallyUnowned parent_instance;
// boost linked list member hook
boost::intrusive::list_member_hook<> member_hook_;
SPCanvas *canvas;
SPCanvasItem *parent;
double x1;
double y1;
double x2;
double y2;
Geom::Rect bounds;
Geom::Affine xform;
int ctrlResize;
Inkscape::ControlType ctrlType;
Inkscape::ControlFlags ctrlFlags;
// Replacement for custom GtkObject flag enumeration
gboolean visible;
gboolean need_update;
gboolean need_affine;
// If true, then SPCanvasGroup::point() and sp_canvas_item_invoke_point() will calculate
// the distance to the pointer, such that this item can be picked in pickCurrentItem()
// Only if an item can be picked, then it can be set as current_item and receive events!
bool pickable;
bool in_destruction;
};
GType sp_canvas_item_get_type();
//Define type for linked list storing SPCanvasItems
typedef boost::intrusive::list<
SPCanvasItem,
boost::intrusive::member_hook<SPCanvasItem, boost::intrusive::list_member_hook<>, &SPCanvasItem::member_hook_> >
SPCanvasItemList;
/**
* The vtable of an SPCanvasItem.
*/
struct _SPCanvasItemClass {
GInitiallyUnownedClass parent_class;
void (* update) (SPCanvasItem *item, Geom::Affine const &affine, unsigned int flags);
void (* render) (SPCanvasItem *item, SPCanvasBuf *buf);
double (* point) (SPCanvasItem *item, Geom::Point p, SPCanvasItem **actual_item);
int (* event) (SPCanvasItem *item, GdkEvent *event);
void (* viewbox_changed) (SPCanvasItem *item, Geom::IntRect const &new_area);
/* Default signal handler for the ::destroy signal, which is
* invoked to request that references to the widget be dropped.
* If an object class overrides destroy() in order to perform class
* specific destruction then it must still invoke its superclass'
* implementation of the method after it is finished with its
* own cleanup. (See gtk_widget_real_destroy() for an example of
* how to do this).
*/
void (*destroy) (SPCanvasItem *object);
};
/**
* Constructs new SPCanvasItem on SPCanvasGroup.
*/
SPCanvasItem *sp_canvas_item_new(SPCanvasGroup *parent, GType type, const gchar *first_arg_name, ...);
G_END_DECLS
void sp_canvas_item_affine_absolute(SPCanvasItem *item, Geom::Affine const &aff);
void sp_canvas_item_raise(SPCanvasItem *item, int positions);
void sp_canvas_item_raise_to_top(SPCanvasItem *item);
void sp_canvas_item_lower(SPCanvasItem *item, int positions);
void sp_canvas_item_lower_to_bottom(SPCanvasItem *item);
bool sp_canvas_item_is_visible(SPCanvasItem *item);
void sp_canvas_item_show(SPCanvasItem *item);
void sp_canvas_item_hide(SPCanvasItem *item);
void sp_canvas_item_destroy(SPCanvasItem *item);
int sp_canvas_item_grab(SPCanvasItem *item, unsigned int event_mask, GdkCursor *cursor, guint32 etime);
void sp_canvas_item_ungrab(SPCanvasItem *item);
Geom::Affine sp_canvas_item_i2w_affine(SPCanvasItem const *item);
void sp_canvas_item_request_update(SPCanvasItem *item);
/* get item z-order in parent group */
gint sp_canvas_item_order(SPCanvasItem * item);
#endif // SEEN_SP_CANVAS_ITEM_H
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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