gtk.Tooltip
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## gtk.Tooltip

gtk.Tooltip — Add tips to your widgets (new in PyGTK 2.12)

## Synopsis

    class gtk.Tooltip(gobject.GObject):
        def set_custom(widget)
        def set_icon(pixbuf)
        def set_icon_from_icon_name(icon_name, size)
        def set_icon_from_stock(stock_id, size)
        def set_markup(markup)
        def set_text(text)

    Functions

        def gtk.tooltip_trigger_tooltip_query(display)

## Ancestry

    +-- gobject.GObject
      +-- gtk.Tooltip

## Description

`gtk.Tooltip` belongs to the new tooltips API that was introduced in GTK+ 2.12 and which deprecates the old `gtk.Tooltips` API.

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 `gtk.TreeView` 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 `gtk.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 stock 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 `gtk.Window` 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 `gtk.Window` created by you as tooltip window.
- In the ::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.

## Methods

### gtk.Tooltip.set_custom

        def set_custom(widget)

`widget` : | A `gtk.Widget`

### Note

This method is available in PyGTK 2.12 and above.

The `set_custom`() method replaces the widget packed into the tooltip with custom_widget. By default a box with a `gtk.Image` and `gtk.Label` is embedded in the tooltip, which can be configured using `set_markup` and `set_icon`.

### gtk.Tooltip.set_icon

        def get_value(pixbuf)

`pixbuf` : | A `gtk.gdk.Pixbuf` or `None`.

### Note

This method is available in PyGTK 2.12 and above.

The `set_icon`() method sets the icon of the tooltip (which is in front of the text) to be pixbuf. If `pixbuf` is `None`, the image will be hidden.

### gtk.Tooltip.set_icon_from_icon_name

        def set_icon_from_icon_name(icon_name, size)

`icon_name` : | an icon name, or `None`.
`size` : | A stock icon size.

### Note

This method is available in PyGTK 2.14 and above.

The `set_icon_from_icon_name`() 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 `None`, the image will be hidden.

### gtk.Tooltip.set_icon_from_stock

        def set_icon_from_stock(stock_id, size)

`stock_id` : | A stock icon name, or `None`.
`size` : | A stock icon size.

### Note

This method is available in PyGTK 2.12 and above.

The `set_icon_from_stock`() method 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 `None`, the image will be hidden.

### gtk.Tooltip.set_markup

        def set_markup(markup)

`markup` : | A markup string (see Pango markup format) or `None`.

### Note

This method is available in PyGTK 2.12 and above.

The `set_markup`() method sets the text of the tooltip to be `markup`, which is marked up with the Pango text markup language. If `markup` is `None`, the label will be hidden.

### gtk.Tooltip.set_text

        def set_text(text)

`text` : | A text string or `None`.

### Note

This method is available in PyGTK 2.12 and above.

The `set_text`() method sets the text of the tooltip to be text. If text is `None`, the label will be hidden. See also `set_markup`.

## Functions

### gtk.tooltip_trigger_tooltip_query

        def tooltip_trigger_tooltip_query(display)

`display` : | A `gtk.gdk.Display`

### Note

This function is available in PyGTK 2.12 and above.

The `tooltip_trigger_tooltip_query`() function triggers a new tooltip query on display, in order to update the current visible tooltip, or to show/hide the current tooltip. This function is useful to call when, for example, the state of the widget changed by a key press.

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