#ifndef SEEN_SP_MEASURING_CONTEXT_H

#define SEEN_SP_MEASURING_CONTEXT_H

#include <stddef.h>

#include <sigc++/sigc++.h>

#include "ui/tools/tool-base.h"

#include <2geom/point.h>

#include "display/canvas-text.h"

#include <boost/optional.hpp>

#define SP_MEASURE_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::MeasureTool*>((Inkscape::UI::Tools::ToolBase*)obj))

#define SP_IS_MEASURE_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::MeasureTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)

class SPKnot;

namespace Inkscape {

namespace UI {

namespace Tools {

class MeasureTool : public ToolBase {

public:

MeasureTool();

virtual ~MeasureTool();

static const std::string prefsPath;

virtual void finish();

virtual bool root_handler(GdkEvent* event);

virtual void showCanvasItems(bool to_guides = false, bool to_item = false, Inkscape::XML::Node *measure_repr = NULL);

virtual void reverseKnots();

virtual void toGuides();

virtual void toMarkDimension();

virtual void toItem();

virtual void reset();

virtual void setMarkers();

virtual void setMarker(bool isStart);

virtual const std::string& getPrefsPath();

void setGuide(Geom::Point origin, double angle, const char *label);

void setPoint(Geom::Point origin, Inkscape::XML::Node *measure_repr);

void setLine(Geom::Point start_point,Geom::Point end_point, bool markers = false, guint32 *color = NULL, Inkscape::XML::Node *measure_repr = NULL);

void setLabelText(const char *value, Geom::Point pos, double fontsize, Geom::Coord angle, guint32 *background = NULL, Inkscape::XML::Node *measure_repr = NULL, CanvasTextAnchorPositionEnum text_anchor = TEXT_ANCHOR_CENTER );

void knotStartMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state);

void knotEndMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state);

void knotUngrabbedHandler(SPKnot */*knot*/, unsigned int /*state*/);

private:

SPCanvasItem* grabbed;

boost::optional<Geom::Point> explicitBase;

boost::optional<Geom::Point> last_end;

SPKnot *knot_start;

SPKnot *knot_end;

sigc::connection _knot_start_moved_connection;

sigc::connection _knot_start_ungrabbed_connection;

sigc::connection _knot_end_moved_connection;

sigc::connection _knot_end_ungrabbed_connection;

};

}

}

}

#endif // SEEN_SP_MEASURING_CONTEXT_H