TooltipProtocol

public protocol TooltipProtocol : ObjectProtocol

Basic tooltips can be realized simply by using gtk_widget_set_tooltip_text() or gtk_widget_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 GtkTreeView row or cell, you will have to do a little more work:

  • Set the GtkWidget: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 GtkWidget::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 GtkTooltip object. This is the object that we are about to display as a tooltip, and can be manipulated in your callback using functions like gtk_tooltip_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.

In the probably rare case where you want to have even more control over the tooltip that is about to be shown, you can set your own GtkWindow which will be used as tooltip window. This works as follows:

  • Set GtkWidget:has-tooltip and connect to GtkWidget::query-tooltip as before. Use gtk_widget_set_tooltip_window() to set a GtkWindow created by you as tooltip window.

  • In the GtkWidget::query-tooltip callback you can access your window using gtk_widget_get_tooltip_window() and manipulate as you wish. The semantics of the return value are exactly as before, return true to show the window, false to not show it.

The TooltipProtocol protocol exposes the methods and properties of an underlying GtkTooltip instance. The default implementation of these can be found in the protocol extension below. For a concrete class that implements these methods and properties, see Tooltip. Alternatively, use TooltipRef as a lighweight, unowned reference if you already have an instance you just want to use.

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  • ptr

    Untyped pointer to the underlying GtkTooltip instance.

    Declaration

    Swift

    var ptr: UnsafeMutableRawPointer! { get }
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  • tooltip_ptr Default implementation

    Typed pointer to the underlying GtkTooltip instance.

    Default Implementation

    Return the stored, untyped pointer as a typed pointer to the GtkTooltip instance.

    Declaration

    Swift

    var tooltip_ptr: UnsafeMutablePointer<GtkTooltip>! { get }
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  • Required Initialiser for types conforming to TooltipProtocol

    Declaration

    Swift

    init(raw: UnsafeMutableRawPointer)
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Tooltip Class: TooltipProtocol extension (methods and fields)

  • setCustom(customWidget:) Extension method

    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 GtkImage and GtkLabel is embedded in the tooltip, which can be configured using gtk_tooltip_set_markup() and gtk_tooltip_set_icon().

    Declaration

    Swift

    @inlinable
func setCustom(customWidget: WidgetRef? = nil)
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  • setCustom(customWidget:) Extension method

    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 GtkImage and GtkLabel is embedded in the tooltip, which can be configured using gtk_tooltip_set_markup() and gtk_tooltip_set_icon().

    Declaration

    Swift

    @inlinable
func setCustom<WidgetT>(customWidget: WidgetT?) where WidgetT : WidgetProtocol
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  • setIcon(pixbuf:) Extension method

    Sets the icon of the tooltip (which is in front of the text) to be pixbuf. If pixbuf is nil, the image will be hidden.

    Declaration

    Swift

    @inlinable
func setIcon(pixbuf: PixbufRef? = nil)
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  • setIcon(pixbuf:) Extension method

    Sets the icon of the tooltip (which is in front of the text) to be pixbuf. If pixbuf is nil, the image will be hidden.

    Declaration

    Swift

    @inlinable
func setIcon<PixbufT>(pixbuf: PixbufT?) where PixbufT : PixbufProtocol
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  • setIconFrom(gicon:size:) Extension method

    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 nil, the image will be hidden.

    Declaration

    Swift

    @inlinable
func setIconFrom(gicon: GIO.IconRef? = nil, size: GtkIconSize)
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  • setIconFrom(gicon:size:) Extension method

    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 nil, the image will be hidden.

    Declaration

    Swift

    @inlinable
func setIconFrom<IconT>(gicon: IconT?, size: GtkIconSize) where IconT : IconProtocol
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  • setIconFrom(iconName:size:) Extension method

    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 nil, the image will be hidden.

    Declaration

    Swift

    @inlinable
func setIconFrom(iconName: UnsafePointer<gchar>? = nil, size: GtkIconSize)
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  • Sets the icon of the tooltip (which is in front of the text) to be the stock item indicated by stock_id with the size indicated by size. If stock_id is nil, the image will be hidden.

    set_icon_from_stock is deprecated: Use gtk_tooltip_set_icon_from_icon_name() instead.

    Declaration

    Swift

    @available(*, deprecated)
@inlinable
func setIconFromStock(stockID: UnsafePointer<gchar>? = nil, size: GtkIconSize)
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  • set(markup:) Extension method

    Sets the text of the tooltip to be markup, which is marked up with the Pango text markup language. If markup is nil, the label will be hidden.

    Declaration

    Swift

    @inlinable
func set(markup: UnsafePointer<gchar>? = nil)
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  • set(text:) Extension method

    Sets the text of the tooltip to be text. If text is nil, the label will be hidden. See also gtk_tooltip_set_markup().

    Declaration

    Swift

    @inlinable
func set(text: UnsafePointer<gchar>? = nil)
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  • setTipArea(rect:) Extension method

    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 GtkTreeView rows and cells, GtkIconViews, etc.

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

    Declaration

    Swift

    @inlinable
func setTipArea<RectangleT>(rect: RectangleT) where RectangleT : RectangleProtocol
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