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#ifndef __SP_KNOT_H__
#define __SP_KNOT_H__
/** \file
* Declarations for SPKnot: Desktop-bound visual control object.
*/
/*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 1999-2002 authors
* Copyright (C) 2001-2002 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <gdk/gdk.h>
#include <gtk/gtkenums.h>
#include "display/display-forward.h"
#include "forward.h"
#include <libnr/nr-point.h>
#include "knot-enums.h"
class SPKnot;
class SPKnotClass;
#define SP_TYPE_KNOT (sp_knot_get_type())
#define SP_KNOT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), SP_TYPE_KNOT, SPKnot))
#define SP_KNOT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), SP_TYPE_KNOT, SPKnotClass))
#define SP_IS_KNOT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), SP_TYPE_KNOT))
#define SP_IS_KNOT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), SP_TYPE_KNOT))
/**
* Desktop-bound visual control object.
*
* A knot is a draggable object, with callbacks to change something by
* dragging it, visuably represented by a canvas item (mostly square).
*/
struct SPKnot {
GObject object;
SPDesktop *desktop; /**< Desktop we are on. */
SPCanvasItem *item; /**< Our CanvasItem. */
guint flags;
guint size; /**< Always square. */
NR::Point pos; /**< Our desktop coordinates. */
NR::Point grabbed_rel_pos; /**< Grabbed relative position. */
NR::Point drag_origin; /**< Origin of drag. */
GtkAnchorType anchor; /**< Anchor. */
SPKnotShapeType shape; /**< Shape type. */
SPKnotModeType mode;
guint32 fill[SP_KNOT_VISIBLE_STATES];
guint32 stroke[SP_KNOT_VISIBLE_STATES];
guchar *image[SP_KNOT_VISIBLE_STATES];
GdkCursor *cursor[SP_KNOT_VISIBLE_STATES];
GdkCursor *saved_cursor;
gpointer pixbuf;
gchar *tip;
};
/// The SPKnot vtable.
struct SPKnotClass {
GObjectClass parent_class;
gint (* event) (SPKnot *knot, GdkEvent *event);
/*
* These are unconditional.
*/
void (* clicked) (SPKnot *knot, guint state);
void (* doubleclicked) (SPKnot *knot, guint state);
void (* grabbed) (SPKnot *knot, guint state);
void (* ungrabbed) (SPKnot *knot, guint state);
void (* moved) (SPKnot *knot, NR::Point *position, guint state);
void (* stamped) (SPKnot *know, guint state);
/** Request knot to move to absolute position. */
bool (* request) (SPKnot *knot, NR::Point *pos, guint state);
/** Find complex distance from knot to point. */
gdouble (* distance) (SPKnot *knot, NR::Point *pos, guint state);
};
GType sp_knot_get_type();
SPKnot *sp_knot_new(SPDesktop *desktop, gchar const *tip = NULL);
#define SP_KNOT_IS_VISIBLE(k) ((k->flags & SP_KNOT_VISIBLE) != 0)
#define SP_KNOT_IS_MOSEOVER(k) ((k->flags & SP_KNOT_MOUSEOVER) != 0)
#define SP_KNOT_IS_DRAGGING(k) ((k->flags & SP_KNOT_DRAGGING) != 0)
#define SP_KNOT_IS_GRABBED(k) ((k->flags & SP_KNOT_GRABBED) != 0)
void sp_knot_show(SPKnot *knot);
void sp_knot_hide(SPKnot *knot);
void sp_knot_request_position(SPKnot *knot, NR::Point *pos, guint state);
gdouble sp_knot_distance(SPKnot *knot, NR::Point *p, guint state);
void sp_knot_start_dragging(SPKnot *knot, NR::Point p, gint x, gint y, guint32 etime);
/** Moves knot and emits "moved" signal. */
void sp_knot_set_position(SPKnot *knot, NR::Point *p, guint state);
/** Moves knot without any signal. */
void sp_knot_moveto(SPKnot *knot, NR::Point *p);
NR::Point sp_knot_position(SPKnot const *knot);
#endif /* !__SP_KNOT_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:encoding=utf-8:textwidth=99 :
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