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;
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 CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument *in_doc);
71 virtual ~CanvasGrid();
73 static const char * getName(GridType type);
74 static const char * getSVGName(GridType type);
75 static GridType getGridTypeFromSVGName(const char * typestr);
76 static GridType getGridTypeFromName(const char * typestr);
78 static CanvasGrid* NewGrid(SPNamedView * nv, Inkscape::XML::Node * repr, SPDocument *doc, GridType gridtype);
79 static void writeNewGridToRepr(Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype);
81 GridCanvasItem * createCanvasItem(SPDesktop * desktop);
83 virtual void Update (NR::Matrix const &affine, unsigned int flags) = 0;
84 virtual void Render (SPCanvasBuf *buf) = 0;
86 virtual void readRepr() {};
87 virtual void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive) {};
89 virtual Gtk::Widget & getWidget() = 0;
91 Inkscape::XML::Node * repr;
92 SPDocument *doc;
94 Inkscape::Snapper* snapper;
96 static void on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
98 protected:
99 GSList * canvasitems; // list of created canvasitems
101 SPNamedView * namedview;
103 Gtk::VBox vbox;
105 private:
106 CanvasGrid(const CanvasGrid&);
107 CanvasGrid& operator=(const CanvasGrid&);
109 };
112 class CanvasXYGrid : public CanvasGrid {
113 public:
114 CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
115 ~CanvasXYGrid();
117 void Update (NR::Matrix const &affine, unsigned int flags);
118 void Render (SPCanvasBuf *buf);
120 void readRepr();
121 void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive);
123 Gtk::Widget & getWidget();
125 NR::Point origin;
126 guint32 color;
127 guint32 empcolor;
128 gint empspacing;
129 SPUnit const* gridunit;
131 NR::Point spacing; /**< Spacing between elements of the grid */
132 bool scaled[2]; /**< Whether the grid is in scaled mode, which can
133 be different in the X or Y direction, hense two
134 variables */
135 NR::Point ow; /**< Transformed origin by the affine for the zoom */
136 NR::Point sw; /**< Transformed spacing by the affine for the zoom */
137 private:
138 CanvasXYGrid(const CanvasXYGrid&);
139 CanvasXYGrid& operator=(const CanvasXYGrid&);
141 void updateWidgets();
143 Gtk::Table table;
145 Inkscape::UI::Widget::RegisteredUnitMenu _rumg, _rums;
146 Inkscape::UI::Widget::RegisteredScalarUnit _rsu_ox, _rsu_oy, _rsu_sx, _rsu_sy;
147 Inkscape::UI::Widget::RegisteredColorPicker _rcp_gcol, _rcp_gmcol;
148 Inkscape::UI::Widget::RegisteredSuffixedInteger _rsi;
149 Inkscape::UI::Widget::RegisteredCheckButton _rcb_dotted;
151 Inkscape::UI::Widget::Registry _wr;
153 bool render_dotted;
154 };
158 class CanvasXYGridSnapper : public LineSnapper
159 {
160 public:
161 CanvasXYGridSnapper(CanvasXYGrid *grid, SPNamedView const *nv, NR::Coord const d);
163 private:
164 LineList _getSnapLines(NR::Point const &p) const;
166 CanvasXYGrid *grid;
167 };
169 }; /* namespace Inkscape */
174 #endif