1 #ifndef INKSCAPE_CANVAS_GRID_H
2 #define INKSCAPE_CANVAS_GRID_H
4 /*
5 * Inkscape::CXYGrid
6 *
7 * Generic (and quite unintelligent) grid item for gnome canvas
8 *
9 * Copyright (C) Johan Engelen 2006-2007 <johan@shouraizou.nl>
10 * Copyright (C) Lauris Kaplinski 2000
11 *
12 */
14 #include <display/sp-canvas.h>
15 #include "xml/repr.h"
16 #include <gtkmm/box.h>
19 #include <gtkmm.h>
20 #include "ui/widget/color-picker.h"
21 #include "ui/widget/scalar-unit.h"
23 #include "ui/widget/registered-widget.h"
24 #include "ui/widget/registry.h"
25 #include "ui/widget/tolerance-slider.h"
27 #include "xml/node-event-vector.h"
29 #include "snapper.h"
30 #include "line-snapper.h"
32 struct SPDesktop;
33 struct SPNamedView;
34 class SPDocument;
36 namespace Inkscape {
39 enum GridType {
40 GRID_RECTANGULAR = 0,
41 GRID_AXONOMETRIC = 1
42 };
43 #define GRID_MAXTYPENR 1
45 #define INKSCAPE_TYPE_GRID_CANVASITEM (Inkscape::grid_canvasitem_get_type ())
46 #define INKSCAPE_GRID_CANVASITEM(obj) (GTK_CHECK_CAST ((obj), INKSCAPE_TYPE_GRID_CANVASITEM, GridCanvasItem))
47 #define INKSCAPE_GRID_CANVASITEM_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), INKSCAPE_TYPE_GRID_CANVASITEM, GridCanvasItem))
48 #define INKSCAPE_IS_GRID_CANVASITEM(obj) (GTK_CHECK_TYPE ((obj), INKSCAPE_TYPE_GRID_CANVASITEM))
49 #define INKSCAPE_IS_GRID_CANVASITEM_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), INKSCAPE_TYPE_GRID_CANVASITEM))
51 class CanvasGrid;
53 /** \brief All the variables that are tracked for a grid specific
54 canvas item. */
55 struct GridCanvasItem : public SPCanvasItem{
56 CanvasGrid *grid; // the owning grid object
57 };
59 struct GridCanvasItemClass {
60 SPCanvasItemClass parent_class;
61 };
63 /* Standard Gtk function */
64 GtkType grid_canvasitem_get_type (void);
68 class CanvasGrid {
69 public:
70 virtual ~CanvasGrid();
72 // TODO: see effect.h and effect.cpp from live_effects how to link enums to SVGname to typename properly. (johan)
73 const char * getName();
74 const char * getSVGName();
75 GridType getGridType();
76 static const char * getName(GridType type);
77 static const char * getSVGName(GridType type);
78 static GridType getGridTypeFromSVGName(const char * typestr);
79 static GridType getGridTypeFromName(const char * typestr);
81 static CanvasGrid* NewGrid(SPNamedView * nv, Inkscape::XML::Node * repr, SPDocument *doc, GridType gridtype);
82 static void writeNewGridToRepr(Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype);
84 GridCanvasItem * createCanvasItem(SPDesktop * desktop);
86 virtual void Update (NR::Matrix const &affine, unsigned int flags) = 0;
87 virtual void Render (SPCanvasBuf *buf) = 0;
89 virtual void readRepr() = 0;
90 virtual void onReprAttrChanged (Inkscape::XML::Node * /*repr*/, const gchar */*key*/, const gchar */*oldval*/, const gchar */*newval*/, bool /*is_interactive*/) = 0;
92 virtual Gtk::Widget & getWidget() = 0;
94 Inkscape::XML::Node * repr;
95 SPDocument *doc;
97 Inkscape::Snapper* snapper;
99 static void on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
101 bool isVisible() { return (isEnabled() &&visible); };
102 bool isEnabled();
104 protected:
105 CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument *in_doc, GridType type);
107 GSList * canvasitems; // list of created canvasitems
109 SPNamedView * namedview;
111 Gtk::VBox vbox;
112 Gtk::Label namelabel;
114 Inkscape::UI::Widget::Registry _wr;
115 Inkscape::UI::Widget::RegisteredCheckButton _rcb_visible;
116 bool visible;
117 Inkscape::UI::Widget::RegisteredCheckButton _rcb_enabled;
119 GridType gridtype;
121 private:
122 CanvasGrid(const CanvasGrid&);
123 CanvasGrid& operator=(const CanvasGrid&);
124 };
127 class CanvasXYGrid : public CanvasGrid {
128 public:
129 CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
130 virtual ~CanvasXYGrid();
132 void Update (NR::Matrix const &affine, unsigned int flags);
133 void Render (SPCanvasBuf *buf);
135 void readRepr();
136 void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive);
138 Gtk::Widget & getWidget();
140 NR::Point origin;
141 guint32 color;
142 guint32 empcolor;
143 gint empspacing;
144 SPUnit const* gridunit;
146 NR::Point spacing; /**< Spacing between elements of the grid */
147 bool scaled[2]; /**< Whether the grid is in scaled mode, which can
148 be different in the X or Y direction, hense two
149 variables */
150 NR::Point ow; /**< Transformed origin by the affine for the zoom */
151 NR::Point sw; /**< Transformed spacing by the affine for the zoom */
152 private:
153 CanvasXYGrid(const CanvasXYGrid&);
154 CanvasXYGrid& operator=(const CanvasXYGrid&);
156 void updateWidgets();
158 Gtk::Table table;
160 Inkscape::UI::Widget::RegisteredUnitMenu _rumg, _rums;
161 Inkscape::UI::Widget::RegisteredScalarUnit _rsu_ox, _rsu_oy, _rsu_sx, _rsu_sy;
162 Inkscape::UI::Widget::RegisteredColorPicker _rcp_gcol, _rcp_gmcol;
163 Inkscape::UI::Widget::RegisteredSuffixedInteger _rsi;
164 Inkscape::UI::Widget::RegisteredCheckButton _rcb_dotted;
166 bool render_dotted;
167 };
171 class CanvasXYGridSnapper : public LineSnapper
172 {
173 public:
174 CanvasXYGridSnapper(CanvasXYGrid *grid, SPNamedView const *nv, NR::Coord const d);
175 bool ThisSnapperMightSnap() const;
177 private:
178 LineList _getSnapLines(NR::Point const &p) const;
179 void _addSnappedLine(SnappedConstraints &sc, NR::Point const snapped_point, NR::Coord const snapped_distance, NR::Point const normal_to_line, const NR::Point point_on_line) const;
180 CanvasXYGrid *grid;
181 };
183 }; /* namespace Inkscape */
188 #endif