The gtk.FontSelection widget allows users to select and apply the font of a particular name, size and style. The dialog has a preview box containing some text which will be displayed in selected font description, and two buttons CANCEL and OK.
PyGTK API contains a Pango module which defines classes and functionality required to render high quality internationalized text. Font and text handling in gtk is supported by Pango. The pango.Font object represents a font in a system independent way. The pango.FontDescription object contains the characteristics of a font.
gtk.FontSelectionDialog returns a pango.Font object. In order to apply the selected font, fontmetrics is fetched by obtaining the pango.FontDescription object from it.
The following is a constructor of the FontSelectionDialog class −
dlg = gtk.FontSelectionDialog(title)
The following are some frequently used methods of this class −
get_font_name() − This returns a string containing the currently selected font name or None if no font name is selected.
set_font_name() − This sets the current font
set_preview_text() − This sets the text in the preview area entry
The selected font is applied to the text in a widget using the modify_font() method.
When FontSelectionDialog menu item is activated, the following callback function is invoked −
def on_abtdlg(self, widget): about = gtk.AboutDialog() about.set_program_name("PyGTK Dialog") about.set_version("0.1") about.set_authors("M.V.Lathkar") about.set_copyright("(c) TutorialsPoint") about.set_comments("About Dialog example") about.set_website("http://www.tutorialspoint.com") about.run() about.destroy()
The selected font is applied to the text of label placed on the toplevel window.
The following is the output −