1 // SPDX-License-Identifier: GPL-2.0-or-later 2 #ifndef CANVAS_AXONOMGRID_H 3 #define CANVAS_AXONOMGRID_H 4 5 /* 6 * Authors: 7 * Johan Engelen <j.b.c.engelen@alumnus.utwente.nl> 8 * 9 * Copyright (C) 2006-2012 Authors 10 * Released under GNU GPL v2+, read the file 'COPYING' for more information. 11 */ 12 13 #include "line-snapper.h" 14 #include "canvas-grid.h" 15 16 class SPNamedView; 17 18 namespace Inkscape { 19 class CanvasItemBuffer; 20 namespace XML { 21 class Node; 22 }; 23 24 class CanvasAxonomGrid : public CanvasGrid { 25 public: 26 CanvasAxonomGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc); 27 ~CanvasAxonomGrid() override; 28 29 void Update (Geom::Affine const &affine, unsigned int flags) override; 30 void Render (Inkscape::CanvasItemBuffer *buf) override; 31 32 void readRepr() override; 33 void onReprAttrChanged (Inkscape::XML::Node * repr, char const *key, char const *oldval, char const *newval, bool is_interactive) override; 34 35 double lengthy; /**< The lengths of the primary y-axis */ 36 double angle_deg[3]; /**< Angle of each axis (note that angle[2] == 0) */ 37 double angle_rad[3]; /**< Angle of each axis (note that angle[2] == 0) */ 38 double tan_angle[3]; /**< tan(angle[.]) */ 39 40 bool scaled; /**< Whether the grid is in scaled mode */ 41 42 protected: 43 friend class CanvasAxonomGridSnapper; 44 45 Geom::Point ow; /**< Transformed origin by the affine for the zoom */ 46 double lyw = 1.0; /**< Transformed length y by the affine for the zoom */ 47 double lxw_x = 1.0; 48 double lxw_z = 1.0; 49 double spacing_ylines = 1.0; 50 51 Geom::Point sw; /**< the scaling factors of the affine transform */ 52 53 Gtk::Widget * newSpecificWidget() override; 54 55 private: 56 CanvasAxonomGrid(const CanvasAxonomGrid&) = delete; 57 CanvasAxonomGrid& operator=(const CanvasAxonomGrid&) = delete; 58 59 void updateWidgets(); 60 61 Inkscape::UI::Widget::RegisteredUnitMenu *_rumg; 62 Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_ox; 63 Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_oy; 64 Inkscape::UI::Widget::RegisteredScalarUnit *_rsu_sy; 65 Inkscape::UI::Widget::RegisteredScalar *_rsu_ax; 66 Inkscape::UI::Widget::RegisteredScalar *_rsu_az; 67 Inkscape::UI::Widget::RegisteredColorPicker *_rcp_gcol; 68 Inkscape::UI::Widget::RegisteredColorPicker *_rcp_gmcol; 69 Inkscape::UI::Widget::RegisteredSuffixedInteger *_rsi; 70 }; 71 72 73 74 class CanvasAxonomGridSnapper : public LineSnapper 75 { 76 public: 77 CanvasAxonomGridSnapper(CanvasAxonomGrid *grid, SnapManager *sm, Geom::Coord const d); 78 bool ThisSnapperMightSnap() const override; 79 80 Geom::Coord getSnapperTolerance() const override; //returns the tolerance of the snapper in screen pixels (i.e. independent of zoom) 81 bool getSnapperAlwaysSnap() const override; //if true, then the snapper will always snap, regardless of its tolerance 82 83 private: 84 LineList _getSnapLines(Geom::Point const &p) const override; 85 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; 86 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; 87 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; 88 89 CanvasAxonomGrid *grid; 90 }; 91 92 93 }; //namespace Inkscape 94 95 96 97 #endif 98 99 100