1 files changed, 154 insertions, 0 deletions
diff --git a/src/object/sp-grid.h b/src/object/sp-grid.h
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+++ b/src/object/sp-grid.h
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Inkscape SPGrid implementation
+ *
+ * Authors:
+ * James Ferrarelli
+ * Johan Engelen <johan@shouraizou.nl>
+ * Lauris Kaplinski
+ * Abhishek Sharma
+ * Jon A. Cruz <jon@joncruz.org>
+ * Tavmong Bah <tavmjong@free.fr>
+ * see git history
+ *
+ * Copyright (C) 2022 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef SEEN_SP_GRID_H_
+#define SEEN_SP_GRID_H_
+
+#include "display/control/canvas-item-ptr.h"
+#include "object/sp-object.h"
+#include "svg/svg-bool.h"
+#include "svg/svg-length.h"
+#include "svg/svg-angle.h"
+#include <memory>
+#include <vector>
+
+class SPDesktop;
+
+namespace Inkscape {
+    class CanvasItemGrid;
+    class Snapper;
+
+    namespace Util {
+        class Unit;
+    }
+} // namespace Inkscape
+
+enum class GridType
+{
+    RECTANGULAR,
+    AXONOMETRIC
+};
+
+class SPGrid final : public SPObject {
+public:
+    SPGrid();
+    ~SPGrid() override;
+    int tag() const override { return tag_of<decltype(*this)>; }
+
+    static void create_new(SPDocument *doc, Inkscape::XML::Node *parent, GridType type);
+
+    void setPrefValues();
+
+    void show(SPDesktop *desktop);
+    void hide(SPDesktop const *desktop);
+
+    bool isEnabled() const;
+    void setEnabled(bool v);
+
+    bool isVisible() const { return isEnabled() && _visible; }
+    void setVisible(bool v);
+
+    bool isDotted() const { return _dotted; }
+    void setDotted(bool v);
+
+    bool getSnapToVisibleOnly() const { return _snap_to_visible_only; }
+    void setSnapToVisibleOnly(bool v);
+
+    guint32 getMajorColor() const { return _major_color; }
+    void setMajorColor(const guint32 color);
+
+    guint32 getMinorColor() const { return _minor_color; }
+    void setMinorColor(const guint32 color);
+
+    Geom::Point getOrigin() const;
+    void setOrigin(Geom::Point const &new_origin);
+
+    Geom::Point getSpacing() const;
+    void setSpacing(Geom::Point const &spacing);
+
+    guint32 getMajorLineInterval() const { return _major_line_interval; }
+    void setMajorLineInterval(guint32 interval);
+
+    double getAngleX() const { return _angle_x.computed; }
+    void setAngleX(double deg);
+
+    double getAngleZ() const { return _angle_z.computed; }
+    void setAngleZ(double deg);
+
+    const char *typeName() const;
+    const char *displayName() const;
+
+    GridType getType() const { return _grid_type; }
+    const char *getSVGType() const;
+    void setSVGType(const char *svgtype);
+
+    void setUnit(const Glib::ustring &units);
+    const Inkscape::Util::Unit *getUnit() const;
+
+    bool isPixel() const { return _pixel; }
+    bool isLegacy() const { return _legacy; }
+
+    void scale(const Geom::Scale &scale);
+    Inkscape::CanvasItemGrid *getAssociatedView(SPDesktop const *desktop);
+
+    Inkscape::Snapper *snapper();
+
+    std::pair<Geom::Point, Geom::Point> getEffectiveOriginAndSpacing() const;
+
+    std::vector<CanvasItemPtr<Inkscape::CanvasItemGrid>> views;
+
+protected:
+    void build(SPDocument *doc, Inkscape::XML::Node *repr) override;
+    void set(SPAttr key, const char *value) override;
+    void release() override;
+    void modified(unsigned int flags) override;
+    void update(SPCtx *ctx, unsigned int flags) override;
+
+private:
+    void _checkOldGrid(SPDocument *doc, Inkscape::XML::Node *repr);
+    void _recreateViews();
+
+    SVGBool _visible;
+    SVGBool _enabled;
+    SVGBool _snap_to_visible_only;
+    SVGBool _dotted;
+    SVGLength _origin_x;
+    SVGLength _origin_y;
+    SVGLength _spacing_x;
+    SVGLength _spacing_y;
+    SVGAngle _angle_x; // only for axonomgrid, stored in degrees
+    SVGAngle _angle_z; // only for axonomgrid, stored in degrees
+
+    guint32 _major_line_interval;
+
+    guint32 _major_color;
+    guint32 _minor_color;
+
+    bool _pixel;        // is in user units
+    bool _legacy;       // a grid from versions prior to inkscape 0.98
+
+    GridType _grid_type;
+
+    std::unique_ptr<Inkscape::Snapper> _snapper;
+
+    Inkscape::Util::Unit const *_display_unit;
+
+    sigc::connection _page_selected_connection;
+    sigc::connection _page_modified_connection;
+};
+
+#endif // SEEN_SP_GRID_H_