ColorButton

Object Hierarchy:

Description:

public class Application : Gtk.Window {
	public Application () {
		// Prepare Gtk.Window:
		this.title = "My Gtk.ColorButton";
		this.window_position = Gtk.WindowPosition.CENTER;
		this.destroy.connect (Gtk.main_quit);

		// The button:
		Gtk.ColorButton button = new Gtk.ColorButton ();

		// Use alpha channel
		button.set_use_alpha (true);

		// Set value to blue:
		Gdk.RGBA rgba = Gdk.RGBA ();
		bool tmp = rgba.parse ("#0066FF");
		assert (tmp == true);

		button.rgba = rgba;

		// Sets the title for the color selection dialog:
		button.set_title ("Select your favourite color");

		// Catch color-changes:
		button.color_set.connect (() => {
			uint16 alpha = button.get_alpha ();
			print ("%s, %hu\n", button.rgba.to_string (), alpha);
		});
		this.add (button);
	}

	public static int main (string[] args) {
		Gtk.init (ref args);

		Application app = new Application ();
		app.show_all ();
		Gtk.main ();
		return 0;
	}
}

valac --pkg gtk+-3.0 Gtk.ColorButton.vala

Content:

Properties:

• public uint alpha { set; get; }
  The selected opacity value (0 fully transparent, 65535 fully opaque).
• public Color color { set; get; }
  The selected color.
• public RGBA rgba { set; get; }
• public bool show_editor { set; get; }
  Set this property to true to skip the palette in the dialog and go directly to the color editor.
• public string title { set; get; }
  The title of the color selection dialog
• public bool use_alpha { set; get; }

Creation methods:

• public ColorButton ()
  Creates a new color button.
• public ColorButton.with_color (Color color)
  Creates a new color button.
• public ColorButton.with_rgba (RGBA rgba)
  Creates a new color button.

Methods:

• public uint16 get_alpha ()
  Returns the current alpha value.
• public void get_color (out Color color)
  Sets color to be the current color in the ColorButton widget.
• public unowned string get_title ()
  Gets the title of the color selection dialog.
• public bool get_use_alpha ()
  Does the color selection dialog use the alpha channel ?
• public void set_alpha (uint16 alpha)
  Sets the current opacity to be alpha.
• public void set_color (Color color)
  Sets the current color to be color.
• public void set_title (string title)
  Sets the title for the color selection dialog.
• public void set_use_alpha (bool use_alpha)
  Sets whether or not the color button should use the alpha channel.

Signals:

• public virtual signal void color_set ()
  The color_set signal is emitted when the user selects a color.

Inherited Members: