| Top |  |
 |
 |
 |
Description
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().
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.
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”.)
Functions
goo_canvas_ellipse_model_new ()
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.
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:
1 2 3 4 5 |
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); |
Parameters
parent |
the parent model, or |
[skip] |
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 |
Types and Values
struct GooCanvasEllipseModel
struct GooCanvasEllipseModel;
The GooCanvasEllipseModel struct contains private data only.
Property Details
The “center-x” property
“center-x” gdouble
The x coordinate of the center of the ellipse.
Flags: Read / Write
Default value: 0
The “center-y” property
“center-y” gdouble
The y coordinate of the center of the ellipse.
Flags: Read / Write
Default value: 0
The “height” property
“height” gdouble
The height of the ellipse.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
The “radius-x” property
“radius-x” gdouble
The horizontal radius of the ellipse.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
The “radius-y” property
“radius-y” gdouble
The vertical radius of the ellipse.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
The “width” property
“width” gdouble
The width of the ellipse.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
The “x” property
“x” gdouble
The x coordinate of the left side of the ellipse.
Flags: Read / Write
Default value: 0
The “y” property
“y” gdouble
The y coordinate of the top of the ellipse.
Flags: Read / Write
Default value: 0