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 <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;
35 namespace Inkscape {
38 enum GridType {
39 GRID_RECTANGULAR = 0,
40 GRID_AXONOMETRIC = 1
41 };
42 #define GRID_MAXTYPENR 1
44 #define INKSCAPE_TYPE_GRID_CANVASITEM (Inkscape::grid_canvasitem_get_type ())
45 #define INKSCAPE_GRID_CANVASITEM(obj) (GTK_CHECK_CAST ((obj), INKSCAPE_TYPE_GRID_CANVASITEM, GridCanvasItem))
46 #define INKSCAPE_GRID_CANVASITEM_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), INKSCAPE_TYPE_GRID_CANVASITEM, GridCanvasItem))
47 #define INKSCAPE_IS_GRID_CANVASITEM(obj) (GTK_CHECK_TYPE ((obj), INKSCAPE_TYPE_GRID_CANVASITEM))
48 #define INKSCAPE_IS_GRID_CANVASITEM_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), INKSCAPE_TYPE_GRID_CANVASITEM))
50 class CanvasGrid;
52 /** \brief All the variables that are tracked for a grid specific
53 canvas item. */
54 struct GridCanvasItem : public SPCanvasItem{
55 CanvasGrid *grid; // the owning grid object
56 };
58 struct GridCanvasItemClass {
59 SPCanvasItemClass parent_class;
60 };
62 /* Standard Gtk function */
63 GtkType grid_canvasitem_get_type (void);
67 class CanvasGrid {
68 public:
69 CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr);
70 virtual ~CanvasGrid();
72 static const char * getName(GridType type);
73 static const char * getSVGName(GridType type);
74 static GridType getGridTypeFromSVGName(const char * typestr);
75 static GridType getGridTypeFromName(const char * typestr);
77 static CanvasGrid* NewGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, GridType gridtype);
78 static void writeNewGridToRepr(Inkscape::XML::Node * repr, GridType gridtype);
80 GridCanvasItem * createCanvasItem(SPDesktop * desktop);
82 virtual void Update (NR::Matrix const &affine, unsigned int flags) = 0;
83 virtual void Render (SPCanvasBuf *buf) = 0;
85 virtual void readRepr() {};
86 virtual void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive) {};
88 virtual Gtk::Widget & getWidget() = 0;
90 Inkscape::XML::Node * repr;
92 Inkscape::Snapper* snapper;
94 static void on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
96 protected:
97 GSList * canvasitems; // list of created canvasitems
99 SPNamedView * namedview;
101 Gtk::VBox vbox;
103 private:
104 CanvasGrid(const CanvasGrid&);
105 CanvasGrid& operator=(const CanvasGrid&);
107 };
110 class CanvasXYGrid : public CanvasGrid {
111 public:
112 CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr);
113 ~CanvasXYGrid();
115 void Update (NR::Matrix const &affine, unsigned int flags);
116 void Render (SPCanvasBuf *buf);
118 void readRepr();
119 void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive);
121 Gtk::Widget & getWidget();
123 NR::Point origin;
124 guint32 color;
125 guint32 empcolor;
126 gint empspacing;
127 SPUnit const* gridunit;
129 NR::Point spacing; /**< Spacing between elements of the grid */
130 bool scaled[2]; /**< Whether the grid is in scaled mode, which can
131 be different in the X or Y direction, hense two
132 variables */
133 NR::Point ow; /**< Transformed origin by the affine for the zoom */
134 NR::Point sw; /**< Transformed spacing by the affine for the zoom */
135 private:
136 CanvasXYGrid(const CanvasXYGrid&);
137 CanvasXYGrid& operator=(const CanvasXYGrid&);
139 void updateWidgets();
141 Gtk::Table table;
143 Inkscape::UI::Widget::RegisteredUnitMenu _rumg, _rums;
144 Inkscape::UI::Widget::RegisteredScalarUnit _rsu_ox, _rsu_oy, _rsu_sx, _rsu_sy;
145 Inkscape::UI::Widget::RegisteredColorPicker _rcp_gcol, _rcp_gmcol;
146 Inkscape::UI::Widget::RegisteredSuffixedInteger _rsi;
147 Inkscape::UI::Widget::RegisteredCheckButton _rcb_dotted;
149 Inkscape::UI::Widget::Registry _wr;
151 bool render_dotted;
152 };
156 class CanvasXYGridSnapper : public LineSnapper
157 {
158 public:
159 CanvasXYGridSnapper(CanvasXYGrid *grid, SPNamedView const *nv, NR::Coord const d);
161 private:
162 LineList _getSnapLines(NR::Point const &p) const;
164 CanvasXYGrid *grid;
165 };
167 }; /* namespace Inkscape */
172 #endif