GooCanvasWidget: GooCanvas Reference Manual

## GooCanvasWidget GooCanvasWidget — an embedded widget item. |

## Functions

GooCanvasItem * | goo_canvas_widget_new ()

## Properties

GooCanvasAnchorType | anchor | Read / Write
gdouble | height | Read / Write
GtkWidget * | widget | Read / Write
gdouble | width | Read / Write
gdouble | x | Read / Write
gdouble | y | Read / Write

## Types and Values

struct | GooCanvasWidget

## Object Hierarchy

        GObject
        ╰── GooCanvasItemSimple
            ╰── GooCanvasWidget

## Implemented Interfaces

GooCanvasWidget implements GooCanvasItem.

## Description

GooCanvasWidget provides support for placing any GtkWidget in the canvas.

The “width” and “height” properties specify the widget's size. If either of them is -1, then the requested size of the widget is used instead, which is the default for both width and height.

Note that there are a number of limitations in the use of GooCanvasWidget:

- It doesn't support any transformation besides simple translation. This means you can't scale a canvas with a GooCanvasWidget in it.

- It doesn't support layering, so you can't place other items beneath or above the GooCanvasWidget.

- It doesn't support rendering of widgets to a given cairo_t, which means you can't output the widget to a pdf or postscript file.

- It doesn't have a model/view variant like the other standard items, so it can only be used in a simple canvas without a model.

- It can't be made a static item.

## Functions

### goo_canvas_widget_new ()

    GooCanvasItem *
    goo_canvas_widget_new (GooCanvasItem *parent,
                           GtkWidget *widget,
                           gdouble x,
                           gdouble y,
                           gdouble width,
                           gdouble height,
                           ...);

Creates a new widget item.

Here's an example showing how to create an entry widget centered at (100.0, 100.0):

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    GtkWidget *entry = gtk_entry_new ();
    GooCanvasItem *witem = goo_canvas_widget_new (mygroup, entry,
                                                  100, 100, -1, -1,
                                                  "anchor", GOO_CANVAS_ANCHOR_CENTER,
                                                  NULL);

#### Parameters

parent | 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. | [skip]
widget | the widget. |
x | the x coordinate of the item. |
y | the y coordinate of the item. |
width | the width of the item, or -1 to use the widget's requested width. |
height | the height of the item, or -1 to use the widget's requested height. |
... | optional pairs of property names and values, and a terminating `NULL`. |

#### Returns

a new widget item.

[transfer full]

## Types and Values

### struct GooCanvasWidget

    struct GooCanvasWidget;

The GooCanvasWidget struct contains private data only.

## Property Details

### The `“anchor”` property

      “anchor”                   GooCanvasAnchorType

How to position the widget relative to the item's x and y coordinate settings.

Flags: Read / Write

Default value: GOO_CANVAS_ANCHOR_NORTH_WEST

### The `“height”` property

      “height”                   gdouble

The height of the widget, or -1 to use its requested height.

Flags: Read / Write

Default value: -1

### The `“widget”` property

      “widget”                   GtkWidget *

The widget to place in the canvas.

Flags: Read / Write

### The `“width”` property

      “width”                    gdouble

The width of the widget, or -1 to use its requested width.

Flags: Read / Write

Default value: -1

### The `“x”` property

      “x”                        gdouble

The x coordinate of the widget.

Flags: Read / Write

Default value: 0

### The `“y”` property

      “y”                        gdouble

The y coordinate of the widget.

Flags: Read / Write

Default value: 0