Class: Hokusai::Blocks::Selectable

Inherits:
Hokusai::Block show all
Defined in:
ui/src/hokusai/blocks/selectable.rb

Instance Attribute Summary collapse

Attributes inherited from Hokusai::Block

#node, #provides, #publisher

Instance Method Summary collapse

Methods inherited from Hokusai::Block

#children, #children?, compile, computed, computed!, #draw, #draw_with, #dump, #emit, inject, inject!, #method_missing, mount, #on_resize, provide, provides, #render, style, styles_get, template, template_from_file, template_get, #update, use, uses

Constructor Details

#initialize(**args) ⇒ Selectable

Returns a new instance of Selectable.



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# File 'ui/src/hokusai/blocks/selectable.rb', line 33

def initialize(**args)
  @selection = Hokusai::Util::Selection.new

  super
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Hokusai::Block

Instance Attribute Details

#selection ⇒ Object (readonly)

Returns the value of attribute selection.



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# File 'ui/src/hokusai/blocks/selectable.rb', line 31

def selection
  @selection
end

Instance Method Details

#cursor(index) ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 71

def cursor(index)
  return if selection.cursor.nil?

  selection.cursor[index]
end

#cursor_height ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 63

def cursor_height
  cursor(3)
end

#cursor_show ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 67

def cursor_show
  !selection.cursor.nil?
end

#cursor_x ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 55

def cursor_x
  cursor(0)
end

#cursor_y ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 59

def cursor_y
  cursor(1)
end

#start_selection(event) ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 39

def start_selection(event)
  if event.left.down && !selection.active?
    selection.start(event.pos.x, event.pos.y)
  end
end

#update_selection(event) ⇒ Object 



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# File 'ui/src/hokusai/blocks/selectable.rb', line 45

def update_selection(event)
  return unless selection.active?

  if event.left[:up]
    selection.freeze!
  elsif event.left[:down]
    selection.stop(event.pos.x, event.pos.y)
  end
end