1 files changed, 87 insertions, 0 deletions
diff --git a/src/display/control/canvas-item-curve.h b/src/display/control/canvas-item-curve.h
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+++ b/src/display/control/canvas-item-curve.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_CANVAS_ITEM_CURVE_H
+#define SEEN_CANVAS_ITEM_CURVE_H
+
+/**
+ * A class to represent a single Bezier control curve.
+ */
+
+/*
+ * Author:
+ *   Tavmjong Bah
+ *
+ * Copyright (C) 2020 Tavmjong Bah
+ *
+ * Rewrite of SPCtrlLine and SPCtrlCurve
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <memory>
+#include <2geom/path.h>
+
+#include "canvas-item.h"
+
+namespace Inkscape {
+
+class CanvasItemGroup; // A canvas control that contains other canvas controls.
+
+class CanvasItemCurve : public CanvasItem {
+
+public:
+    CanvasItemCurve(CanvasItemGroup *group);
+    CanvasItemCurve(CanvasItemGroup *group, Geom::Point const &p0, Geom::Point const &p1);
+    CanvasItemCurve(CanvasItemGroup *group, Geom::Point const &p0, Geom::Point const &p1,
+                                            Geom::Point const &p2, Geom::Point const &p3);
+
+    // Geometry
+    void set_coords(Geom::Point const &p0, Geom::Point const &p1);
+    void set_coords(Geom::Point const &p0, Geom::Point const &p1, Geom::Point const &p2, Geom::Point const &p3);
+    void set(Geom::BezierCurve &curve);
+    void set_width(int w);
+    void set_bg_alpha(float alpha);
+    bool is_line() { return _curve->size() == 2; }
+
+    void update(Geom::Affine const &affine) override;
+    double closest_distance_to(Geom::Point const &p); // Maybe not needed
+
+    // Selection
+    bool contains(Geom::Point const &p, double tolerance = 0) override;
+
+    // Display
+    void render(Inkscape::CanvasItemBuffer *buf) override;
+
+    // Properties
+    void set_is_fill(bool is_fill) { _is_fill = is_fill; }
+    bool get_is_fill() { return _is_fill; }
+    void set_corner0(int corner0) { _corner0 = corner0; } // Used for meshes
+    int  get_corner0() { return _corner0; }
+    void set_corner1(int corner1) { _corner1 = corner1; }
+    int  get_corner1() { return _corner1; }
+ 
+protected:
+    std::unique_ptr<Geom::BezierCurve> _curve; 
+    bool _is_fill = true; // Fill or stroke, used by meshes.
+
+    int width = 1;
+    int background_width = 3; // this should be an odd number so that the background appears on both the sides of the curve.
+    float bg_alpha = 0.5f;
+    int _corner0 = -1; // For meshes
+    int _corner1 = -1; // For meshes
+};
+
+
+} // namespace Inkscape
+
+#endif // SEEN_CANVAS_ITEM_CURVE_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 :