| GooCanvas Reference Manual | ||||
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GooCanvasEllipseModel;
GooCanvasItemModel* goo_canvas_ellipse_model_new (GooCanvasItemModel *parent,
gdouble center_x,
gdouble center_y,
gdouble radius_x,
gdouble radius_y,
...);
"center-x" gdouble : Read / Write "center-y" gdouble : Read / Write "radius-x" gdouble : Read / Write "radius-y" gdouble : Read / Write
GooCanvasEllipseModel represents a model for ellipse items.
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 GooCanvasEllipseModel use goo_canvas_ellipse_model_new().
To get or set the properties of an existing GooCanvasEllipseModel, use
g_object_get() and g_object_set().
To respond to events such as mouse clicks on the ellipse you must connect
to the signal handlers of the corresponding GooCanvasEllipse objects.
(See goo_canvas_get_item() and "item-created".)
typedef struct _GooCanvasEllipseModel GooCanvasEllipseModel;
The GooCanvasEllipseModel struct contains private data only.
GooCanvasItemModel* goo_canvas_ellipse_model_new (GooCanvasItemModel *parent, gdouble center_x, gdouble center_y, gdouble radius_x, gdouble radius_y, ...);
Creates a new ellipse model.
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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.
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the x coordinate of the center of the ellipse. |
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the y coordinate of the center of the ellipse. |
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the horizontal radius of the ellipse. |
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the vertical radius of the ellipse. |
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optional pairs of property names and values, and a terminating NULL.
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Returns : |
a new ellipse model. |
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:
GooCanvasItemModel *ellipse = goo_canvas_ellipse_model_new (mygroup, 100.0, 100.0, 50.0, 30.0,
"stroke-color", "red",
"line-width", 5.0,
"fill-color", "blue",
NULL);
"center-x" property"center-x" gdouble : Read / Write
The x coordinate of the center of the ellipse.
Default value: 0
"center-y" property"center-y" gdouble : Read / Write
The y coordinate of the center of the ellipse.
Default value: 0
"radius-x" property"radius-x" gdouble : Read / Write
The horizontal radius of the ellipse.
Allowed values: >= 0
Default value: 0
"radius-y" property"radius-y" gdouble : Read / Write
The vertical radius of the ellipse.
Allowed values: >= 0
Default value: 0