Desplace las escalas.
/* This is the application. */
public class MyApplication : Gtk.Application {
Gtk.Scale h_scale;
Gtk.Scale v_scale;
Gtk.Label label;
/* Override the 'activate' signal of GLib.Application. */
protected override void activate () {
var window = new Gtk.ApplicationWindow (this);
window.title = "Scale Example";
window.set_default_size (400, 300);
window.set_border_width (5);
h_scale = new Gtk.Scale.with_range (Gtk.Orientation.HORIZONTAL, 0.0, 100.0, 5.0);
h_scale.set_digits (0); //number of decimal places displayed
h_scale.set_valign (Gtk.Align.START); //horizontal alignment
var adjustment = new Gtk.Adjustment (42.0, 0.0, 100.0, 5.0, 10.0, 0.0);
v_scale = new Gtk.Scale (Gtk.Orientation.VERTICAL, adjustment);
v_scale.set_vexpand(true);
label = new Gtk.Label ("Move the scale handles...");
var grid = new Gtk.Grid ();
grid.set_column_spacing (10); //amount of space between columns
grid.set_column_homogeneous (true); //all columns same width
grid.attach (h_scale, 0, 0, 1, 1);
grid.attach_next_to (v_scale, h_scale, Gtk.PositionType.RIGHT, 1, 1);
grid.attach (label, 0, 1, 2, 1);
h_scale.value_changed.connect (scale_moved);
v_scale.value_changed.connect (scale_moved);
window.add (grid);
window.show_all ();
}
/* Callback function for "value-changed" signal.
* The parameter refers to the scale which emitted the signal.
* Since we are accessing the values of not one, but two scales,
* we made the ranges instance variables, and ignore the
* parameter.
*/
void scale_moved (Gtk.Range range) {
label.set_text ("Horizontal scale is %.1f; vertical scale is %.1f.".printf (h_scale.get_value (), v_scale.get_value ()));
}
}
/* main creates and runs the application. */
public int main (string[] args) {
return new MyApplication ().run (args);
}
En este ejemplo se usa lo siguiente:
Gtk.Scale
Gtk.Adjustment
Gtk.PositionType
Gtk.Orientation