GooCanvasPolylineModel

GooCanvasPolylineModel — a model for polyline items (a series of lines with optional arrows).

Synopsis

struct              GooCanvasPolylineModel;
GooCanvasItemModel * goo_canvas_polyline_model_new      (GooCanvasItemModel *parent,
                                                         gboolean close_path,
                                                         gint num_points,
                                                         ...);
GooCanvasItemModel * goo_canvas_polyline_model_new_line (GooCanvasItemModel *parent,
                                                         gdouble x1,
                                                         gdouble y1,
                                                         gdouble x2,
                                                         gdouble y2,
                                                         ...);

Object Hierarchy

  GObject
   +----GooCanvasItemModelSimple
         +----GooCanvasPolylineModel

Implemented Interfaces

GooCanvasPolylineModel implements GooCanvasItemModel.

Properties

  "arrow-length"             gdouble               : Read / Write
  "arrow-tip-length"         gdouble               : Read / Write
  "arrow-width"              gdouble               : Read / Write
  "close-path"               gboolean              : Read / Write
  "end-arrow"                gboolean              : Read / Write
  "height"                   gdouble               : Read / Write
  "points"                   GooCanvasPoints*      : Read / Write
  "start-arrow"              gboolean              : Read / Write
  "width"                    gdouble               : Read / Write
  "x"                        gdouble               : Read / Write
  "y"                        gdouble               : Read / Write

Description

GooCanvasPolylineModel represents a model for polyline items, which are a series of one or more lines, with optional arrows at either end.

It is a subclass of GooCanvasItemModelSimple and so inherits all of the style properties such as "stroke-color", "fill-color" and "line-width".

It also implements the GooCanvasItemModel interface, so you can use the GooCanvasItemModel functions such as goo_canvas_item_model_raise() and goo_canvas_item_model_rotate().

To create a GooCanvasPolylineModel use goo_canvas_polyline_model_new(), or goo_canvas_polyline_model_new_line() for a simple line between two points.

To get or set the properties of an existing GooCanvasPolylineModel, use g_object_get() and g_object_set().

To respond to events such as mouse clicks on the polyline you must connect to the signal handlers of the corresponding GooCanvasPolyline objects. (See goo_canvas_get_item() and "item-created".)

Details

struct GooCanvasPolylineModel

struct GooCanvasPolylineModel;

The GooCanvasPolylineModel struct contains private data only.

goo_canvas_polyline_model_new ()

GooCanvasItemModel * goo_canvas_polyline_model_new      (GooCanvasItemModel *parent,
                                                         gboolean close_path,
                                                         gint num_points,
                                                         ...);

Creates a new polyline model.

parent :

 the parent model, or NULL. If a parent is specified, it will assume ownership of the item, and the item will automatically be freed when it is removed from the parent. Otherwise call g_object_unref() to free it. [skip]

close_path :

 if the last point should be connected to the first.

num_points :

 the number of points in the polyline.

... :

 the pairs of coordinates for each point in the line, followed by optional pairs of property names and values, and a terminating NULL.

Returns :

 a new polyline model. [transfer full]

Here's an example showing how to create a filled triangle with vertices at (100,100), (300,100), and (200,300). 

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