Class: Sirens::SplitterView

Inherits:
WidgetView show all
Defined in:
lib/views/splitter_view.rb

Instance Method Summary collapse

Methods inherited from WidgetView

#apply_prop, #apply_props, #main_handle

Methods inherited from AbstractView

accepted_styles, #accepted_styles, #attribute_at, #background_color=, #foreground_color=, #height, #height=, #main_handle, #populate_popup_menu_block=, #remove_view, #set_attribute, #show, #show_popup_menu, #state_colors_from, view_accepted_styles, #width, #width=

Constructor Details

#initialize(orientation:) ⇒ SplitterView

Initializing



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# File 'lib/views/splitter_view.rb', line 6

def initialize(orientation:)
    @orientation = orientation

    super()
end

Instance Method Details

#add_view(child_view) ⇒ Object

Adds the child_component to this component.



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# File 'lib/views/splitter_view.rb', line 25

def add_view(child_view)
    @child_views << child_view

    if @child_views.size <= 2
        main_handle.add(child_view.main_handle)
    else
        paned = Gtk::Paned.new(@orientation)

        last_child_handle = main_handle.children.last

        main_handle.remove(last_child_handle)

        paned.add(last_child_handle)
        paned.add(child_view.main_handle)

        main_handle.add(paned)
    end
end

#initialize_handles ⇒ Object 



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# File 'lib/views/splitter_view.rb', line 12

def initialize_handles()
    @main_handle = Gtk::Paned.new(@orientation)
end

#is_horizontal ⇒ Object 



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# File 'lib/views/splitter_view.rb', line 44

def is_horizontal()
    @orientation === :horizontal
end

#on_size_allocation(width:, height:) ⇒ Object 



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# File 'lib/views/splitter_view.rb', line 48

def on_size_allocation(width:, height:)
    return if @is_first_size_allocation === false

    @is_first_size_allocation = false

    remaining_proportion = 1.0

    current_handle = main_handle

    @child_views.each_with_index do |child_view, index|

        return if index === @child_views.size

        return if current_handle.children.empty?

        proportion = child_view.attribute_at(:splitter_proportion)

        remaining_proportion = remaining_proportion - proportion

        children = current_handle.children

        first_child = children[0]

        set_proportional_size(
            view_handle: first_child,
            width: width,
            height: height,
            proportion: proportion
        )

        return if children.size < 2

        second_child = children[1]

        set_proportional_size(
            view_handle: second_child,
            width: width,
            height: height,
            proportion: remaining_proportion
        )

        current_handle = second_child
    end
end

#set_proportional_size(view_handle:, width:, height:, proportion:) ⇒ Object 



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# File 'lib/views/splitter_view.rb', line 93

def set_proportional_size(view_handle:, width:, height:, proportion:)
    if is_horizontal
        view_handle.set_size_request(width * proportion, height)
    else
        view_handle.set_size_request(width, height * proportion)
    end
end

#subscribe_to_ui_events ⇒ Object 



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# File 'lib/views/splitter_view.rb', line 16

def subscribe_to_ui_events()
    main_handle.signal_connect('size-allocate') { |widget, rectangle|
        on_size_allocation(width: rectangle.width, height: rectangle.height)
    }
end