Class: Hemi::Event::Pattern::Key

Inherits:
Object
  • Object
show all
Defined in:
lib/hemi/event/pattern/key.rb

Constant Summary collapse

MATCHED_EVENT = 
"SDL2::Event::KeyDown".freeze
ALLOWED_TYPES = 
%i[up down].freeze
MOD_KEYS = 
%i[lshift rshift lctrl rctrl lalt ralt lgui rgui].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(key, type: :down, mods: nil) ⇒ Key

Returns a new instance of Key.



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# File 'lib/hemi/event/pattern/key.rb', line 9

def initialize(key, type: :down, mods: nil)
  @type = type.to_s
  @key  = key.to_s
  @mods = mods
  key_to_scancode
  mods_to_modcode
end

Instance Attribute Details

#key ⇒ Object (readonly)

Returns the value of attribute key.



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# File 'lib/hemi/event/pattern/key.rb', line 17

def key
  @key
end

#modcode ⇒ Object (readonly)

Returns the value of attribute modcode.



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# File 'lib/hemi/event/pattern/key.rb', line 17

def modcode
  @modcode
end

#mods ⇒ Object (readonly)

Returns the value of attribute mods.



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# File 'lib/hemi/event/pattern/key.rb', line 17

def mods
  @mods
end

#scancode ⇒ Object (readonly)

Returns the value of attribute scancode.



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# File 'lib/hemi/event/pattern/key.rb', line 17

def scancode
  @scancode
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/hemi/event/pattern/key.rb', line 17

def type
  @type
end

Instance Method Details

#hash ⇒ Object 



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# File 'lib/hemi/event/pattern/key.rb', line 19

def hash
  KeyPattern.new(scancode, modcode).hash
end

#inspect ⇒ Object 



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# File 'lib/hemi/event/pattern/key.rb', line 23

def inspect
  "#<#{self.class}:#{hash} key=#{key} mods=#{mods.join(', ')}>"
end

#key_to_scancode ⇒ Object 



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# File 'lib/hemi/event/pattern/key.rb', line 27

def key_to_scancode
  @scancode = SDL2::Key::Scan.const_get(key.upcase)
end

#mods_to_modcode ⇒ Object 



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# File 'lib/hemi/event/pattern/key.rb', line 31

def mods_to_modcode
  @modcode = mods&.sum do |modkey|
    SDL2::Key::Mod.const_get(modkey.upcase)
  end || 0
end