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GooCanvas Reference Manual |  |
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| Top | Description | Object Hierarchy | Implemented Interfaces | Properties | ||||
Synopsis
GooCanvasEllipse; GooCanvasItem* goo_canvas_ellipse_new (GooCanvasItem *parent,gdouble center_x,gdouble center_y,gdouble radius_x,gdouble radius_y,...);
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.
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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.
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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 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