Widget_Enum *widget_blend_method;
Widget_Enum *widget_interpolation;
Gtk::HScale *widget_opacity;
Widget_Enum *widget_blend_method;
Widget_Enum *widget_interpolation;
Gtk::HScale *widget_opacity;
void on_bline_width_changed();
void on_fg_color_clicked();
void on_bg_color_clicked();
void on_bline_width_changed();
void on_fg_color_clicked();
void on_bg_color_clicked();