// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef COMMON_CONTEXT_H_SEEN
#define COMMON_CONTEXT_H_SEEN

/*
 * Common drawing mode. Base class of Eraser and Calligraphic tools.
 *
 * Authors:
 *   Mitsuru Oka <oka326@parkcity.ne.jp>
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *
 * The original dynadraw code:
 *   Paul Haeberli <paul@sgi.com>
 *
 * Copyright (C) 1998 The Free Software Foundation
 * Copyright (C) 1999-2002 authors
 * Copyright (C) 2001-2002 Ximian, Inc.
 * Copyright (C) 2008 Jon A. Cruz
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */

#include "ui/tools/tool-base.h"
#include "display/curve.h"
#include "display/control/canvas-item-ptr.h"

#include <optional>

class SPCurve;

namespace Inkscape {
    namespace XML {
        class Node;
    }
}

#define SAMPLING_SIZE 8        /* fixme: ?? */

namespace Inkscape {

class CanvasItemBpath;

namespace UI {
namespace Tools {

class DynamicBase : public ToolBase {
public:
    DynamicBase(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename);
    ~DynamicBase() override;

    void set(const Inkscape::Preferences::Entry& val) override;

protected:
    /** accumulated shape which ultimately goes in svg:path */
    SPCurve accumulated;

    /** canvas items for "committed" segments */
    std::vector<CanvasItemPtr<CanvasItemBpath>> segments;

    /** canvas item for red "leading" segment */
    CanvasItemPtr<CanvasItemBpath> currentshape;

    /** shape of red "leading" segment */
    SPCurve currentcurve;

    /** left edge of the stroke; combined to get accumulated */
    SPCurve cal1;

    /** right edge of the stroke; combined to get accumulated */
    SPCurve cal2;

    /** left edge points for this segment */
    Geom::Point point1[SAMPLING_SIZE];

    /** right edge points for this segment */
    Geom::Point point2[SAMPLING_SIZE];

    /** number of edge points for this segment */
    gint npoints;

    /* repr */
    Inkscape::XML::Node *repr;

    /* common */
    Geom::Point cur;
    Geom::Point vel;
    double vel_max;
    Geom::Point acc;
    Geom::Point ang;
    Geom::Point last;
    Geom::Point del;

    /* extended input data */
    gdouble pressure;
    gdouble xtilt;
    gdouble ytilt;

    /* attributes */
    bool dragging;           /* mouse state: mouse is dragging */
    bool usepressure;
    bool usetilt;
    double mass, drag;
    double angle;
    double width;

    double vel_thin;
    double flatness;
    double tremor;
    double cap_rounding;

    bool is_drawing;

    /** uses absolute width independent of zoom */
    bool abs_width;

	Geom::Point getViewPoint(Geom::Point n) const;
	Geom::Point getNormalizedPoint(Geom::Point v) const;
};

}
}
}

#endif // COMMON_CONTEXT_H_SEEN

/*
  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 :

