lighttroupe/luz-next

#
# GuiDeleteButton requires 'removing cover' then deleting, and eagerly closes cover
#
class GuiDeleteButton < GuiBox
    callback :clicked

    class DeleteButton < GuiButton
        def on_last_pointer_exit
            parent.close_cover        # auto-close
        end

        def gui_render
            if pointer_hovering?
                with_alpha(fuzzy_sine($env[:beat] * 3.0).scale(0.7,1.0)) {
                    super
                }
            else
                super
            end
        end
    end

    def initialize(*args)
        super
        create!
    end

    def create!
        self << @button = DeleteButton.new.set(:offset_x => 0.25, :scale_x => 0.5, :opacity => 0.5, :background_image => $engine.load_image('images/buttons/delete.png'), :background_image_hover => $engine.load_image('images/buttons/delete-hover.png'))
        self << @cover = GuiButton.new.set(:scale_x => 0.5, :opacity => 0.5, :background_image => $engine.load_image('images/buttons/delete-cover.png')).
                        add_state(:open, :offset_x => -0.25, :skip_hit_test => true).
                        set_state(:closed, :offset_x => 0.25, :skip_hit_test => false)

        @button.on_clicked {
            clicked_notify
        }
        @cover.on_clicked {
            @cover.switch_state({:closed => :open}, duration=0.3)
        }
    end

    def close_cover
        @cover.switch_state({:open => :closed}, duration=0.2)
    end
end