Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 198 insertions, 0 deletions

diff --git a/src/display/control/canvas-grid.h b/src/display/control/canvas-grid.h
new file mode 100644
index 0000000..860a106
--- /dev/null
+++ b/src/display/control/canvas-grid.h
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Cartesian grid item for the Inkscape canvas.
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Copyright (C) Johan Engelen 2006-2007 <johan@shouraizou.nl>
+ * Copyright (C) Lauris Kaplinski 2000
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef INKSCAPE_CANVAS_GRID_H
+#define INKSCAPE_CANVAS_GRID_H
+
+#include "ui/widget/alignment-selector.h"
+#include "ui/widget/registered-widget.h"
+#include "ui/widget/registry.h"
+#include "line-snapper.h"
+
+class  SPDesktop;
+class SPNamedView;
+class  SPDocument;
+
+namespace Gtk {
+  class Widget;
+}
+
+namespace Inkscape {
+
+class Snapper;
+class CanvasItemBuffer;
+class CanvasItemGrid;
+
+namespace XML {
+class Node;
+}
+
+namespace Util {
+class Unit;
+}
+
+enum GridType {
+    GRID_RECTANGULAR = 0,
+    GRID_AXONOMETRIC = 1
+};
+
+#define GRID_MAXTYPENR 1
+
+#define GRID_DEFAULT_COLOR    0x0099e526
+#define GRID_DEFAULT_EMPCOLOR 0x0099e54d
+
+class CanvasGrid {
+public:
+    virtual ~CanvasGrid();
+
+    // TODO: see effect.h and effect.cpp from live_effects how to link enums to SVGname to typename properly. (johan)
+    const char * getName() const;
+    const char * getSVGName() const;
+    GridType     getGridType() const;
+    static const char * getName(GridType type);
+    static const char * getSVGName(GridType type);
+    static GridType     getGridTypeFromSVGName(const char * typestr);
+    static GridType     getGridTypeFromName(const char * typestr);
+
+    static CanvasGrid* NewGrid(SPNamedView * nv, Inkscape::XML::Node * repr, SPDocument *doc, GridType gridtype);
+    static void writeNewGridToRepr(Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype);
+
+    Inkscape::CanvasItemGrid * createCanvasItem(SPDesktop * desktop);
+    void removeCanvasItem(Inkscape::CanvasItemGrid *item);
+
+    virtual void Update (Geom::Affine const &affine, unsigned int flags) = 0;
+    virtual void Render (Inkscape::CanvasItemBuffer *buf) = 0;
+
+    virtual void readRepr() = 0;
+    virtual void onReprAttrChanged (Inkscape::XML::Node * /*repr*/, char const */*key*/, char const */*oldval*/, char const */*newval*/, bool /*is_interactive*/) = 0;
+
+    Gtk::Widget * newWidget();
+    static void *notifyWidgetsDestroyed(void *data);
+
+    void setOrigin(Geom::Point const &origin_px); /**< writes new origin (specified in px units) to SVG */
+    Geom::Point origin;     /**< Origin of the grid */
+
+    guint32 color;        /**< Color for normal lines */
+    guint32 empcolor;     /**< Color for emphasis lines */
+    gint empspacing;      /**< Spacing between emphasis lines */
+
+    Inkscape::Util::Unit const* gridunit;  /**< points to Unit object in UnitTable (so don't delete it) */
+
+    Inkscape::XML::Node * repr;
+    SPDocument *doc;
+
+    Inkscape::Snapper* snapper;
+
+    static void on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
+
+    bool isLegacy() const { return legacy; }
+    bool isPixel() const { return pixel; }
+
+    bool isVisible() const { return (isEnabled() &&visible); };
+    bool isEnabled() const;
+
+    void align_clicked(int align);
+
+protected:
+    CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument *in_doc, GridType type);
+
+    virtual Gtk::Widget * newSpecificWidget() = 0;
+
+    std::vector<Inkscape::CanvasItemGrid *> canvas_item_grids;  // List of created CanvasGridItem's.
+
+    SPNamedView * namedview;
+
+    Inkscape::UI::Widget::Registry _wr;
+    bool visible;
+    bool render_dotted;
+
+    GridType gridtype;
+
+    // For dealing with old Inkscape SVG files (pre 0.92)
+    bool legacy;
+    bool pixel;
+
+    Inkscape::UI::Widget::RegisteredCheckButton *_rcb_enabled = nullptr;
+    Inkscape::UI::Widget::RegisteredCheckButton *_rcb_snap_visible_only = nullptr;
+    Inkscape::UI::Widget::RegisteredCheckButton *_rcb_visible = nullptr;
+    Inkscape::UI::Widget::RegisteredCheckButton *_rcb_dotted = nullptr;
+    Inkscape::UI::Widget::AlignmentSelector     *_as_alignment = nullptr;
+
+private:
+    CanvasGrid(const CanvasGrid&) = delete;
+    CanvasGrid& operator=(const CanvasGrid&) = delete;
+};
+
+
+class CanvasXYGrid : public CanvasGrid {
+public:
+    CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
+    ~CanvasXYGrid() override;
+
+    virtual void Scale  (Geom::Scale const &scale);
+    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;
+
+    Geom::Point spacing; /**< Spacing between elements of the grid */
+    bool scaled[2];    /**< Whether the grid is in scaled mode, which can
+                            be different in the X or Y direction, hence two
+                            variables */
+    Geom::Point ow;      /**< Transformed origin by the affine for the zoom */
+    Geom::Point sw[2];   /**< Transformed spacing by the affine for the zoom */
+
+protected:
+    Gtk::Widget * newSpecificWidget() override;
+
+private:
+    CanvasXYGrid(const CanvasXYGrid&) = delete;
+    CanvasXYGrid& operator=(const CanvasXYGrid&) = delete;
+
+    void updateWidgets();
+
+    Inkscape::UI::Widget::RegisteredUnitMenu *_rumg = nullptr;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_ox = nullptr;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_oy = nullptr;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_sx = nullptr;
+    Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_sy = nullptr;
+    Inkscape::UI::Widget::RegisteredColorPicker *_rcp_gcol = nullptr;
+    Inkscape::UI::Widget::RegisteredColorPicker *_rcp_gmcol = nullptr;
+    Inkscape::UI::Widget::RegisteredSuffixedInteger *_rsi = nullptr;
+};
+
+
+
+class CanvasXYGridSnapper : public LineSnapper
+{
+public:
+    CanvasXYGridSnapper(CanvasXYGrid *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;
+    CanvasXYGrid *grid;
+};
+
+}; /* namespace Inkscape */
+
+
+
+
+#endif