ColorSelection

Object Hierarchy:

Description:

public class Application : Gtk.Window {

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

		// The Box:
		Gtk.Box box = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
		this.add (box);

		// The ColorChooserWidget:
		Gtk.ColorSelection widget = new Gtk.ColorSelection ();
		box.add (widget);

		// A Button:
		Gtk.Button button = new Gtk.Button.with_label ("Print Selection");
		box.add (button);

		button.clicked.connect (() => {
			string rgba = widget.current_rgba.to_string ();
			uint alpha = widget.current_alpha;
			print ("Selection\n");
			print ("  %s\n", rgba);
			print ("  %u\n", alpha);
		});
	}

	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.ColorSelection.vala

Content:

Properties:

• public uint current_alpha { get; set; }
• public Color current_color { owned get; set; }
  The current GdkColor color.
• public RGBA current_rgba { get; set; }
  The current RGBA color.
• public bool has_opacity_control { get; set; }
• public bool has_palette { get; set; }

Static methods:

• public static bool palette_from_string (string str, out Color[] colors)
  Parses a color palette string; the string is a colon-separated list of color names readable by parse.
• public static string palette_to_string (Color[] colors)
  Encodes a palette as a string, useful for persistent storage.
• public static unowned ColorSelectionChangePaletteWithScreenFunc set_change_palette_with_screen_hook (ColorSelectionChangePaletteWithScreenFunc func)
  Installs a global function to be called whenever the user tries to modify the palette in a color selection.

Creation methods:

• public ColorSelection ()
  Creates a new GtkColorSelection.

Methods:

• public uint16 get_current_alpha ()
  Returns the current alpha value.
• public void get_current_color (out Color color)
  Sets color to be the current color in the GtkColorSelection widget.
• public RGBA get_current_rgba ()
  Sets rgba to be the current color in the GtkColorSelection widget.
• public bool get_has_opacity_control ()
  Determines whether the colorsel has an opacity control.
• public bool get_has_palette ()
  Determines whether the color selector has a color palette.
• public uint16 get_previous_alpha ()
  Returns the previous alpha value.
• public void get_previous_color (out Color color)
  Fills color in with the original color value.
• public RGBA get_previous_rgba ()
  Fills rgba in with the original color value.
• public bool is_adjusting ()
  Gets the current state of the this.
• public void set_current_alpha (uint16 alpha)
  Sets the current opacity to be alpha.
• public void set_current_color (Color color)
  Sets the current color to be color.
• public void set_current_rgba (RGBA rgba)
  Sets the current color to be rgba.
• public void set_has_opacity_control (bool has_opacity)
  Sets the this to use or not use opacity.
• public void set_has_palette (bool has_palette)
  Shows and hides the palette based upon the value of has_palette .
• public void set_previous_alpha (uint16 alpha)
  Sets the “previous” alpha to be alpha.
• public void set_previous_color (Color color)
  Sets the “previous” color to be color.
• public void set_previous_rgba (RGBA rgba)
  Sets the “previous” color to be rgba.

Signals:

• public virtual signal void color_changed ()
  This signal is emitted when the color changes in the ColorSelection according to its update policy.

Inherited Members: