#ifndef SEEN_PENCIL_CONTEXT_H
#define SEEN_PENCIL_CONTEXT_H

/** \file
 * PencilTool: a context for pencil tool events
 */

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

#include <2geom/piecewise.h>
#include <2geom/d2.h>
#include <2geom/sbasis.h>


#define DDC_MIN_PRESSURE      0.0
#define DDC_MAX_PRESSURE      1.0
#define DDC_DEFAULT_PRESSURE  1.0
#define SP_PENCIL_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::PencilTool*>((Inkscape::UI::Tools::ToolBase*)obj))
#define SP_IS_PENCIL_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::PencilTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)

namespace Inkscape {
namespace UI {
namespace Tools {

enum PencilState {
    SP_PENCIL_CONTEXT_IDLE,
    SP_PENCIL_CONTEXT_ADDLINE,
    SP_PENCIL_CONTEXT_FREEHAND,
    SP_PENCIL_CONTEXT_SKETCH
};

/**
 * PencilTool: a context for pencil tool events
 */
class PencilTool : public FreehandBase {
public:
    PencilTool();
    virtual ~PencilTool();

    Geom::Point p[16];
    gint npoints;
    PencilState state;
    Geom::Point req_tangent;

    bool is_drawing;

    std::vector<Geom::Point> ps;

    std::vector<Geom::Point> points;
    std::vector<double> wps;

    void addPowerStrokePencil(SPCurve * c);
    Geom::Piecewise<Geom::D2<Geom::SBasis> > sketch_interpolation; // the current proposal from the sketched paths
    unsigned sketch_n; // number of sketches done

    static const std::string prefsPath;

    virtual const std::string& getPrefsPath();

protected:

    virtual void setup();
    virtual bool root_handler(GdkEvent* event);

private:
    bool _handleButtonPress(GdkEventButton const &bevent);
    bool _handleMotionNotify(GdkEventMotion const &mevent);
    bool _handleButtonRelease(GdkEventButton const &revent);
    bool _handleKeyPress(GdkEventKey const &event);
    bool _handleKeyRelease(GdkEventKey const &event);
    void _setStartpoint(Geom::Point const &p);
    SPItem *_powerpreview;

    void _setEndpoint(Geom::Point const &p);
    void _finishEndpoint();
    void _addFreehandPoint(Geom::Point const &p, guint state);
    void _fitAndSplit();
    void _interpolate();
    void _sketchInterpolate();
    void _extinput(GdkEvent *event);
    void _cancel();
    void _endpointSnap(Geom::Point &p, guint const state);
};

}
}
}

#endif /* !SEEN_PENCIL_CONTEXT_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:fileencoding=utf-8:textwidth=99 :
