GooCanvasEllipseModel

GooCanvasEllipseModel — a model for ellipse items.

Functions

Properties

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

Types and Values

Object Hierarchy

    GObject
    ╰── GooCanvasItemModelSimple
        ╰── GooCanvasEllipseModel

Implemented Interfaces

GooCanvasEllipseModel implements GooCanvasItemModel.

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:

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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 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]

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 model.

[transfer full]

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