1 files changed, 99 insertions, 0 deletions
diff --git a/src/display/control/canvas-axonomgrid.h b/src/display/control/canvas-axonomgrid.h
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+++ b/src/display/control/canvas-axonomgrid.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef CANVAS_AXONOMGRID_H
+#define CANVAS_AXONOMGRID_H
+
+/*
+ * Authors:
+ *    Johan Engelen <j.b.c.engelen@alumnus.utwente.nl>
+ *
+ * Copyright (C) 2006-2012 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "line-snapper.h"
+#include "canvas-grid.h"
+
+class SPNamedView;
+
+namespace Inkscape {
+class CanvasItemBuffer;
+namespace XML {
+    class Node;
+};
+
+class CanvasAxonomGrid : public CanvasGrid {
+public:
+    CanvasAxonomGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
+    ~CanvasAxonomGrid() override;
+
+    void Update (Geom::Affine const &affine, unsigned int flags) override;
+    void Render (Inkscape::CanvasItemBuffer *buf) override;
+
+    void readRepr() override;
+    void onReprAttrChanged (Inkscape::XML::Node * repr, char const *key, char const *oldval, char const *newval, bool is_interactive) override;
+
+    double lengthy;       /**< The lengths of the primary y-axis */
+    double angle_deg[3];  /**< Angle of each axis (note that angle[2] == 0) */
+    double angle_rad[3];  /**< Angle of each axis (note that angle[2] == 0) */
+    double tan_angle[3];  /**< tan(angle[.]) */
+
+    bool scaled;          /**< Whether the grid is in scaled mode */
+
+protected:
+    friend class CanvasAxonomGridSnapper;
+
+    Geom::Point ow;         /**< Transformed origin by the affine for the zoom */
+    double lyw   = 1.0;     /**< Transformed length y by the affine for the zoom */
+    double lxw_x = 1.0;
+    double lxw_z = 1.0;
+    double spacing_ylines = 1.0;
+
+    Geom::Point sw;          /**< the scaling factors of the affine transform */
+
+    Gtk::Widget * newSpecificWidget() override;
+
+private:
+    CanvasAxonomGrid(const CanvasAxonomGrid&) = delete;
+    CanvasAxonomGrid& operator=(const CanvasAxonomGrid&) = delete;
+
+    void updateWidgets();
+
+    Inkscape::UI::Widget::RegisteredUnitMenu *_rumg;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_ox;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_oy;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_sy;
+    Inkscape::UI::Widget::RegisteredScalar *_rsu_ax;
+    Inkscape::UI::Widget::RegisteredScalar *_rsu_az;
+    Inkscape::UI::Widget::RegisteredColorPicker *_rcp_gcol;
+    Inkscape::UI::Widget::RegisteredColorPicker *_rcp_gmcol;
+    Inkscape::UI::Widget::RegisteredSuffixedInteger *_rsi;
+};
+
+
+
+class CanvasAxonomGridSnapper : public LineSnapper
+{
+public:
+    CanvasAxonomGridSnapper(CanvasAxonomGrid *grid, SnapManager *sm, Geom::Coord const d);
+    bool ThisSnapperMightSnap() const override;
+
+    Geom::Coord getSnapperTolerance() const override; //returns the tolerance of the snapper in screen pixels (i.e. independent of zoom)
+    bool getSnapperAlwaysSnap() const override; //if true, then the snapper will always snap, regardless of its tolerance
+
+private:
+    LineList _getSnapLines(Geom::Point const &p) const override;
+    void _addSnappedLine(IntermSnapResults &isr, Geom::Point const &snapped_point, Geom::Coord const &snapped_distance, SnapSourceType const &source, long source_num, Geom::Point const &normal_to_line, const Geom::Point &point_on_line) const override;
+    void _addSnappedPoint(IntermSnapResults &isr, Geom::Point const &snapped_point, Geom::Coord const &snapped_distance, SnapSourceType const &source, long source_num, bool constrained_snap) const override;
+    void _addSnappedLinePerpendicularly(IntermSnapResults &isr, Geom::Point const &snapped_point, Geom::Coord const &snapped_distance, SnapSourceType const &source, long source_num, bool constrained_snap) const override;
+
+    CanvasAxonomGrid *grid;
+};
+
+
+}; //namespace Inkscape
+
+
+
+#endif
+
+