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Variable: GtkSourceView

const GtkSourceView: "GtkSourceView"

Defined in: generated/jsx.ts:20903

Subclass of Gtk.TextView.

GtkSourceView is the main class of the GtkSourceView library. Use a Buffer to display text with a GtkSourceView.

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 interface exposes the 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 GtkSourceView in a manner that allows for components like Map to scale the desired font.

GtkCssProvider *provider = gtk_css_provider_new ();
gtk_css_provider_load_from_string (provider,
                                  "textview { font-family: Monospace; font-size: 8pt; }");
gtk_style_context_add_provider (gtk_widget_get_style_context (view),
                                GTK_STYLE_PROVIDER (provider),
                                GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_object_unref (provider);
provider = Gtk.CssProvider()
provider.load_from_string("textview { font-family: Monospace; font-size: 8pt; }")
style_context = view.get_style_context()
style_context.add_provider(provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)

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