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GooCanvas Reference Manual |  |
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| Top | Description | Object Hierarchy | Implemented Interfaces | Properties | ||||
Synopsis
GooCanvasImageModel; GooCanvasItemModel* goo_canvas_image_model_new (GooCanvasItemModel *parent,GdkPixbuf *pixbuf,gdouble x,gdouble y,...);
Properties
"alpha" gdouble : Read / Write "height" gdouble : Read / Write "pattern" GooCairoPattern* : Read / Write "pixbuf" GdkPixbuf* : Write "scale-to-fit" gboolean : Read / Write "width" gdouble : Read / Write "x" gdouble : Read / Write "y" gdouble : Read / Write
Description
GooCanvasImageModel represent a model for image items.
It is a subclass of GooCanvasItemModelSimple and so inherits all of the style properties such as "operator" and "pointer-events".
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 GooCanvasImageModel use goo_canvas_image_model_new().
To get or set the properties of an existing GooCanvasImageModel, use
g_object_get() and g_object_set().
To respond to events such as mouse clicks on the image you must connect
to the signal handlers of the corresponding GooCanvasImage objects.
(See goo_canvas_get_item() and "item-created".)
Details
GooCanvasImageModel
typedef struct _GooCanvasImageModel GooCanvasImageModel;
The GooCanvasImageModel struct contains private data only.
goo_canvas_image_model_new ()
GooCanvasItemModel* goo_canvas_image_model_new (GooCanvasItemModel *parent,GdkPixbuf *pixbuf,gdouble x,gdouble y,...);
Creates a new image 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 GdkPixbuf containing the image data, or NULL.
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the x coordinate of the image. |
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the y coordinate of the image. |
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optional pairs of property names and values, and a terminating NULL.
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Returns : |
a new image model. |
Here's an example showing how to create an image at (100.0, 100.0), using the given pixbuf at its natural width and height:
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GooCanvasItemModel *image = goo_canvas_image_model_new (mygroup, pixbuf, 100.0, 100.0, NULL); |
Property Details
The "alpha" property
"alpha" gdouble : Read / Write
The opacity of the image, 0.0 is fully transparent, and 1.0 is opaque.
Allowed values: [0,1]
Default value: 1
The "height" property
"height" gdouble : Read / Write
The height of the image.
Allowed values: >= 0
Default value: 0
The "scale-to-fit" property
"scale-to-fit" gboolean : Read / Write
If the image is scaled to fit the width and height settings.
Default value: FALSE
The "width" property
"width" gdouble : Read / Write
The width of the image.
Allowed values: >= 0
Default value: 0