Subclass of gtk.text_view.TextView.

gtksource.view.View is the main class of the GtkSourceView library. Use a class@Buffer to display text with a gtksource.view.View.

This class provides:

• Show the line numbers;
• Show a right margin;
• Highlight the current line;
• Indentation settings;
• Configuration for the Home and End keyboard keys;
• Configure and show line marks;
• And a few other things.

An easy way to test all these features is to use the test-widget mini-program provided in the GtkSourceView repository, in the tests/ directory.

GtkSourceView as GtkBuildable

The GtkSourceView implementation of the gtk.buildable.Buildable interface exposes the property@View:completion object with the internal-child "completion".

An example of a UI definition fragment with GtkSourceView:

<object class="GtkSourceView" id="source_view">
  <property name="tab-width">4</property>
  <property name="auto-indent">True</property>
  <child internal-child="completion">
    <object class="GtkSourceCompletion">
      <property name="select-on-show">False</property>
    </object>
  </child>
</object>

Changing the Font

Gtk CSS provides the best way to change the font for a gtksource.view.View in a manner that allows for components like class@Map to scale the desired font.

GtkCssProvider *provider = gtk_css_provider_new ();
gtk_css_provider_load_from_data (provider,
                                 "textview { font-family: Monospace; font-size: 8pt; }",
                                 -1,
                                 NULL);
gtk_style_context_add_provider (gtk_widget_get_style_context (view),
                                GTK_STYLE_PROVIDER (provider),
                                GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_object_unref (provider);

If you need to adjust the font or size of font within a portion of the document only, you should use a gtk.text_tag.TextTag with the gtk.text_tag.TextTag.utf8 or gtk.text_tag.TextTag.gdouble set so that the font size may be scaled relative to the default font set in CSS.