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GooCanvasEllipse

GooCanvasEllipse — an ellipse item.

Synopsis

                    GooCanvasEllipse;
GooCanvasItem*      goo_canvas_ellipse_new              (GooCanvasItem *parent,
                                                         gdouble center_x,
                                                         gdouble center_y,
                                                         gdouble radius_x,
                                                         gdouble radius_y,
                                                         ...);

Object Hierarchy

  GObject
   +----GooCanvasItemSimple
         +----GooCanvasEllipse

Implemented Interfaces

GooCanvasEllipse implements GooCanvasItem.

Properties

  "center-x"                 gdouble               : Read / Write
  "center-y"                 gdouble               : Read / Write
  "height"                   gdouble               : Read / Write
  "radius-x"                 gdouble               : Read / Write
  "radius-y"                 gdouble               : Read / Write
  "width"                    gdouble               : Read / Write
  "x"                        gdouble               : Read / Write
  "y"                        gdouble               : Read / Write

Description

GooCanvasEllipse represents an ellipse item.

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

It also implements the GooCanvasItem interface, so you can use the GooCanvasItem functions such as goo_canvas_item_raise() and goo_canvas_item_rotate().

To create a GooCanvasEllipse use goo_canvas_ellipse_new().

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

The ellipse can be specified either with the "center-x", "center-y", "radius-x" and "radius-y" properties, or with the "x", "y", "width" and "height" properties.

Details

GooCanvasEllipse

typedef struct _GooCanvasEllipse GooCanvasEllipse;

The GooCanvasEllipse struct contains private data only.


goo_canvas_ellipse_new ()

GooCanvasItem*      goo_canvas_ellipse_new              (GooCanvasItem *parent,
                                                         gdouble center_x,
                                                         gdouble center_y,
                                                         gdouble radius_x,
                                                         gdouble radius_y,
                                                         ...);

Creates a new ellipse item.

parent :

the parent item, 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.

center_x :

the x coordinate of the center of the ellipse.

center_y :

the y coordinate of the center of the ellipse.

radius_x :

the horizontal radius of the ellipse.

radius_y :

the vertical radius of the ellipse.

... :

optional pairs of property names and values, and a terminating NULL.

Returns :

a new ellipse item.

Here's an example showing how to create an ellipse centered at (100.0, 100.0), with a horizontal radius of 50.0 and a vertical radius of 30.0. It is drawn with a red outline with a width of 5.0 and filled with blue:

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GooCanvasItem *ellipse = goo_canvas_ellipse_new (mygroup, 100.0, 100.0, 50.0, 30.0,
                                                 "stroke-color", "red",
                                                 "line-width", 5.0,
                                                 "fill-color", "blue",
                                                 NULL);

Property Details

The "center-x" property

  "center-x"                 gdouble               : Read / Write

The x coordinate of the center of the ellipse.

Default value: 0


The "center-y" property

  "center-y"                 gdouble               : Read / Write

The y coordinate of the center of the ellipse.

Default value: 0


The "height" property

  "height"                   gdouble               : Read / Write

The height of the ellipse.

Allowed values: >= 0

Default value: 0


The "radius-x" property

  "radius-x"                 gdouble               : Read / Write

The horizontal radius of the ellipse.

Allowed values: >= 0

Default value: 0


The "radius-y" property

  "radius-y"                 gdouble               : Read / Write

The vertical radius of the ellipse.

Allowed values: >= 0

Default value: 0


The "width" property

  "width"                    gdouble               : Read / Write

The width of the ellipse.

Allowed values: >= 0

Default value: 0


The "x" property

  "x"                        gdouble               : Read / Write

The x coordinate of the left side of the ellipse.

Default value: 0


The "y" property

  "y"                        gdouble               : Read / Write

The y coordinate of the top of the ellipse.

Default value: 0

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