#[repr(transparent)]
pub struct Tooltip { /* private fields */ }
Expand description

Tooltip is an object representing a widget tooltip.

Basic tooltips can be realized simply by using WidgetExt::set_tooltip_text() or WidgetExt::set_tooltip_markup() without any explicit tooltip object.

When you need a tooltip with a little more fancy contents, like adding an image, or you want the tooltip to have different contents per TreeView row or cell, you will have to do a little more work:

  • Set the property::Widget::has-tooltip property to true. This will make GTK monitor the widget for motion and related events which are needed to determine when and where to show a tooltip.

  • Connect to the signal::Widget::query-tooltip signal. This signal will be emitted when a tooltip is supposed to be shown. One of the arguments passed to the signal handler is a Tooltip object. This is the object that we are about to display as a tooltip, and can be manipulated in your callback using functions like set_icon(). There are functions for setting the tooltip’s markup, setting an image from a named icon, or even putting in a custom widget.

  • Return true from your ::query-tooltip handler. This causes the tooltip to be show. If you return false, it will not be shown.

Implements

glib::ObjectExt

Implementations

Replaces the widget packed into the tooltip with @custom_widget. @custom_widget does not get destroyed when the tooltip goes away. By default a box with a Image and Label is embedded in the tooltip, which can be configured using gtk_tooltip_set_markup() and gtk_tooltip_set_icon().

custom_widget

a Widget, or None to unset the old custom widget.

Sets the icon of the tooltip (which is in front of the text) to be @paintable. If @paintable is None, the image will be hidden.

paintable

a gdk::Paintable

Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by @gicon with the size indicated by @size. If @gicon is None, the image will be hidden.

gicon

a GIcon representing the icon

Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by @icon_name with the size indicated by @size. If @icon_name is None, the image will be hidden.

icon_name

an icon name

Sets the text of the tooltip to be @markup.

The string must be marked up with Pango markup. If @markup is None, the label will be hidden.

markup

a string with Pango markup or NLL

Sets the text of the tooltip to be @text.

If @text is None, the label will be hidden. See also set_markup().

text

a text string

Sets the area of the widget, where the contents of this tooltip apply, to be @rect (in widget coordinates). This is especially useful for properly setting tooltips on TreeView rows and cells, GtkIconViews, etc.

For setting tooltips on TreeView, please refer to the convenience functions for this: gtk_tree_view_set_tooltip_row() and gtk_tree_view_set_tooltip_cell().

rect

a gdk::Rectangle

Trait Implementations

Returns a copy of the value. Read more

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Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

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This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Returns the type identifier of Self.

Auto Trait Implementations

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Performs the conversion.

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Similar to Self::set_property but fails instead of panicking.

Sets the property property_name of the object to value value. Read more

Similar to Self::set_property but fails instead of panicking.

Sets the property property_name of the object to value value. Read more

Similar to Self::set_properties but fails instead of panicking.

Sets multiple properties of the object at once. Read more

Similar to Self::set_properties_from_value but fails instead of panicking.

Sets multiple properties of the object at once. Read more

Similar to Self::property but fails instead of panicking.

Gets the property property_name of the object and cast it to the type V. Read more

Similar to Self::property_value but fails instead of panicking.

Gets the property property_name of the object. Read more

Check if the object has a property property_name of the given type_. Read more

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Return all ParamSpec of the properties of this object.

Freeze all property notifications until the return guard object is dropped. Read more

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Similar to Self::connect but fails instead of panicking.

Connect to the signal signal_name on this object. Read more

Similar to Self::connect_id but fails instead of panicking.

Connect to the signal signal_id on this object. Read more

Similar to Self::connect_local but fails instead of panicking.

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Connect to the signal signal_id on this object. Read more

Similar to Self::connect_unsafe but fails instead of panicking.

Connect to the signal signal_name on this object. Read more

Similar to Self::connect_unsafe_id but fails instead of panicking.

Similar to Self::connect_closure but fails instead of panicking.

Connect a closure to the signal signal_name on this object. Read more

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Connect a closure to the signal signal_id on this object. Read more

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Connect to the signal signal_id on this object. Read more

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Emit signal by signal id. Read more

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Emit signal by signal id with details. Read more

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Downgrade this object to a weak reference.

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🔬 This is a nightly-only experimental API. (toowned_clone_into)

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