index 1e9001e67839107e7b037a7e9abbc550b2b03fd0..aba93798a4f5386ecc16e6450045ea7ad1d8476d 100644 (file)
--- a/src/knot-holder-entity.h
+++ b/src/knot-holder-entity.h
#ifndef SEEN_KNOT_HOLDER_ENTITY_H
#define SEEN_KNOT_HOLDER_ENTITY_H
-/** \file
- * SPKnotHolderEntity definition.
- *
+/** \file
+ * KnotHolderEntity definition.
+ *
* Authors:
* Mitsuru Oka <oka326@parkcity.ne.jp>
+ * Maximilian Albert <maximilian.albert@gmail.com>
*
* Copyright (C) 1999-2001 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
* Copyright (C) 2001 Mitsuru Oka
* Copyright (C) 2004 Monash University
+ * Copyright (C) 2008 Maximilian Albert
*
* Released under GNU GPL
*/
#include <glib/gtypes.h>
+#include "knot.h"
+#include <2geom/forward.h>
+#include "snapper.h"
struct SPItem;
struct SPKnot;
-namespace NR {
-class Point;
-}
-/// SPKnotHolderEntity definition.
-struct SPKnotHolderEntity {
+class SPDesktop;
+class KnotHolder;
+
+typedef void (* SPKnotHolderSetFunc) (SPItem *item, Geom::Point const &p, Geom::Point const &origin, guint state);
+typedef Geom::Point (* SPKnotHolderGetFunc) (SPItem *item);
+/* fixme: Think how to make callbacks most sensitive (Lauris) */
+typedef void (* SPKnotHolderReleasedFunc) (SPItem *item);
+
+class KnotHolderEntity {
+public:
+ KnotHolderEntity() {}
+ virtual ~KnotHolderEntity();
+ virtual void create(SPDesktop *desktop, SPItem *item, KnotHolder *parent, const gchar *tip = "",
+ SPKnotShapeType shape = SP_KNOT_SHAPE_DIAMOND,
+ SPKnotModeType mode = SP_KNOT_MODE_XOR,
+ guint32 color = 0xffffff00);
+
+ /* derived classes used for LPE knotholder handles use this to indicate that they
+ must not be deleted when a knotholder is destroyed */
+ // TODO: it would be nice to ditch this but then we need to dynamically create instances of different
+ // KnotHolderEntity classes in Effect::addKnotHolderEntities. How to do this???
+ virtual bool isDeletable() { return true; }
+
+ /* the get/set/click handlers are virtual functions; each handler class for a knot
+ should be derived from KnotHolderEntity and override these functions */
+ virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state) = 0;
+ virtual Geom::Point knot_get() = 0;
+ virtual void knot_click(guint /*state*/) {}
+
+ void update_knot();
+
+//private:
+ Geom::Point snap_knot_position(Geom::Point const &p);
+ Geom::Point snap_knot_position_constrained(Geom::Point const &p, Inkscape::Snapper::SnapConstraint const &constraint);
+
SPKnot *knot;
+ SPItem *item;
+ SPDesktop *desktop;
+
+ KnotHolder *parent_holder;
+
+ int my_counter;
+ static int counter;
/** Connection to \a knot's "moved" signal. */
guint handler_id;
+ /** Connection to \a knot's "clicked" signal. */
+ guint _click_handler_id;
+ /** Connection to \a knot's "ungrabbed" signal. */
+ guint _ungrab_handler_id;
+
+ sigc::connection _moved_connection;
+ sigc::connection _click_connection;
+ sigc::connection _ungrabbed_connection;
+};
- /**
- * Called solely from knot_moved_handler.
- *
- * \param p Requested position of the knot, in item coordinates
- * \param origin Position where the knot started being dragged
- * \param state GTK event state (for keyboard modifiers)
- */
- void (* knot_set) (SPItem *item, NR::Point const &p, NR::Point const &origin, guint state);
-
- /**
- * Returns the position of the knot representation, in item coordinates.
- */
- NR::Point (* knot_get) (SPItem *item);
-
- void (* knot_click) (SPItem *item, guint state);
+// derived KnotHolderEntity class for LPEs
+class LPEKnotHolderEntity : public KnotHolderEntity {
+ virtual bool isDeletable() { return false; }
};
+/* pattern manipulation */
+
+class PatternKnotHolderEntityXY : public KnotHolderEntity {
+public:
+ virtual Geom::Point knot_get();
+ virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
+};
+
+class PatternKnotHolderEntityAngle : public KnotHolderEntity {
+public:
+ virtual Geom::Point knot_get();
+ virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
+};
+
+class PatternKnotHolderEntityScale : public KnotHolderEntity {
+public:
+ virtual Geom::Point knot_get();
+ virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
+};
#endif /* !SEEN_KNOT_HOLDER_ENTITY_H */