Struct gtk4::Image[][src]

pub struct Image(_);
Expand description

The Image widget displays an image.

An example GtkImage

Various kinds of object can be displayed as an image; most typically, you would load a gdk::Texture from a file, using the convenience function from_file(), for instance:

⚠️ The following code is in c ⚠️

GtkWidget *image = gtk_image_new_from_file ("myfile.png");

If the file isn’t loaded successfully, the image will contain a “broken image” icon similar to that used in many web browsers.

If you want to handle errors in loading the file yourself, for example by displaying an error message, then load the image with gdk::Texture::from_file()][crate::gdk::`Texture::from_file()`], then create the [`Image`][crate::Image] with [from_paintable()``.

Sometimes an application will want to avoid depending on external data files, such as image files. See the documentation of GResource inside GIO, for details. In this case, property::Image::resource, from_resource(), and set_from_resource() should be used.

Image displays its image as an icon, with a size that is determined by the application. See Picture if you want to show an image at is actual size.

CSS nodes

Image has a single CSS node with the name image. The style classes .normal-icons or .large-icons may appear, depending on the property::Image::icon-size property.

Accessibility

Image uses the GTK_ACCESSIBLE_ROLE_IMG role.

Implements

WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, WidgetExtManual, AccessibleExtManual

Implementations

Creates a new empty Image widget.

Returns

a newly created Image widget.

Creates a new Image displaying the file filename.

If the file isn’t found or can’t be loaded, the resulting Image will display a “broken image” icon. This function never returns None, it always returns a valid Image widget.

If you need to detect failures to load the file, use gdk::Texture::from_file()`` to load the file yourself, then create the Image from the texture.

The storage type (see storage_type()) of the returned image is not defined, it will be whatever is appropriate for displaying the file.

filename

a filename

Returns

a new Image

Creates a Image displaying an icon from the current icon theme.

If the icon name isn’t known, a “broken image” icon will be displayed instead. If the current icon theme is changed, the icon will be updated appropriately.

icon

an icon

Returns

a new Image displaying the themed icon

Creates a Image displaying an icon from the current icon theme.

If the icon name isn’t known, a “broken image” icon will be displayed instead. If the current icon theme is changed, the icon will be updated appropriately.

icon_name

an icon name or None

Returns

a new Image displaying the themed icon

Creates a new Image displaying paintable.

The Image does not assume a reference to the paintable; you still need to unref it if you own references. Image will add its own reference rather than adopting yours.

The Image will track changes to the paintable and update its size and contents in response to it.

paintable

a gdk::Paintable, or None

Returns

a new Image

Creates a new Image displaying pixbuf.

The Image does not assume a reference to the pixbuf; you still need to unref it if you own references. Image will add its own reference rather than adopting yours.

This is a helper for from_paintable(), and you can’t get back the exact pixbuf once this is called, only a texture.

Note that this function just creates an Image from the pixbuf. The Image created will not react to state changes. Should you want that, you should use from_icon_name().

pixbuf

a gdk_pixbuf::Pixbuf, or None

Returns

a new Image

Creates a new Image displaying the resource file resource_path.

If the file isn’t found or can’t be loaded, the resulting Image will display a “broken image” icon. This function never returns None, it always returns a valid Image widget.

If you need to detect failures to load the file, use gdk_pixbuf::Pixbuf::from_file()`` to load the file yourself, then create the Image from the pixbuf.

The storage type (see storage_type()) of the returned image is not defined, it will be whatever is appropriate for displaying the file.

resource_path

a resource path

Returns

a new Image

Creates a new builder-pattern struct instance to construct Image objects.

This method returns an instance of ImageBuilder which can be used to create Image objects.

Resets the image to be empty.

Gets the GIcon being displayed by the Image.

The storage type of the image must be ImageType::Empty or ImageType::Gicon (see storage_type()). The caller of this function does not own a reference to the returned GIcon.

Returns

a GIcon, or None

Gets the icon name and size being displayed by the Image.

The storage type of the image must be ImageType::Empty or ImageType::IconName (see storage_type()). The returned string is owned by the Image and should not be freed.

Returns

the icon name, or None

Gets the icon size used by the self when rendering icons.

Returns

the image size used by icons

Gets the image gdk::Paintable being displayed by the Image.

The storage type of the image must be ImageType::Empty or ImageType::Paintable (see storage_type()). The caller of this function does not own a reference to the returned paintable.

Returns

the displayed paintable, or None if the image is empty

Gets the pixel size used for named icons.

Returns

the pixel size used for named icons.

Gets the type of representation being used by the Image to store image data.

If the Image has no image data, the return value will be ImageType::Empty.

Returns

image representation being used

Sets a Image to show a file.

See from_file() for details.

filename

a filename or None

Sets a Image to show a GIcon.

See from_gicon() for details.

icon

an icon

Sets a Image to show a named icon.

See from_icon_name() for details.

icon_name

an icon name or None

Sets a Image to show a gdk::Paintable.

See from_paintable() for details.

paintable

a gdk::Paintable or None

Sets a Image to show a gdk_pixbuf::Pixbuf.

See from_pixbuf() for details.

Note: This is a helper for set_from_paintable(), and you can’t get back the exact pixbuf once this is called, only a paintable.

pixbuf

a gdk_pixbuf::Pixbuf or NULL

Sets a Image to show a resource.

See from_resource() for details.

resource_path

a resource path or None

Suggests an icon size to the theme for named icons.

icon_size

the new icon size

Sets the pixel size to use for named icons.

If the pixel size is set to a value != -1, it is used instead of the icon size set by set_from_icon_name().

pixel_size

the new pixel size

The `GFile to display.

The `GFile to display.

The GIcon displayed in the GtkImage.

For themed icons, If the icon theme is changed, the image will be updated automatically.

The name of the icon in the icon theme.

If the icon theme is changed, the image will be updated automatically.

The gdk::Paintable to display.

A path to a resource file to display.

A path to a resource file to display.

Whether the icon displayed in the Image will use standard icon names fallback.

The value of this property is only relevant for images of type ImageType::IconName and ImageType::Gicon.

Whether the icon displayed in the Image will use standard icon names fallback.

The value of this property is only relevant for images of type ImageType::IconName and ImageType::Gicon.

Trait Implementations

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