handle chords

Dependencies

• [2] 6Q6XGOFL little Lua repl on hitting ctrl-r
• [3] 634QBFQX ctrl- and alt- combinations
• [4] OTIBCAUJ love2d scaffold
• [5] 5TIFKJ7S handle space key
• [6] QU7NHFOV show cursor
• [*] R5QXEHUI somebody stop me

Change contents

• edit in main.lua at line 1
  [3.2]

  [3.3]
  + require 'keychord'

  +
• replacement in main.lua at line 30
  [3.451]→[3.451:527](∅→∅)
  − function love.keypressed(key, scancode, isrepeat)

  − if key == 'return' then
  [3.451]

  [3.527]
  + function love.textinput(t)

  + lines[#lines] = lines[#lines]..t

  + end

  +

  + function keychord_pressed(chord)

  + -- Don't handle any keys here that would trigger love.textinput above.

  + if chord == 'return' then
• replacement in main.lua at line 38
  [3.555]→[3.2:70](∅→∅),[3.70]→[3.2:112](∅→∅),[3.112]→[2.2:69](∅→∅),[2.69]→[3.112:207](∅→∅),[3.112]→[3.112:207](∅→∅),[3.207]→[2.70:175](∅→∅),[3.70]→[3.555:601](∅→∅),[2.175]→[3.555:601](∅→∅),[3.249]→[3.555:601](∅→∅),[3.555]→[3.555:601](∅→∅)
  − elseif key == 'space' then

  − lines[#lines] = lines[#lines]..' '

  − elseif key == 'lctrl' or key == 'rctrl' then

  − -- do nothing

  − elseif key == 'lalt' or key == 'ralt' then

  − -- do nothing

  − elseif key == 'lshift' or key == 'rshift' then

  − -- do nothing

  − elseif love.keyboard.isDown('lctrl') or love.keyboard.isDown('rctrl') then

  − if key == 'r' then

  − lines[#lines+1] = eval(lines[#lines])[1]

  − lines[#lines+1] = ''

  − end

  − else

  − lines[#lines] = lines[#lines]..key
  [3.555]

  [3.601]
  + elseif chord == 'C-r' then

  + lines[#lines+1] = eval(lines[#lines])[1]

  + lines[#lines+1] = ''
• edit in main.lua at line 42
  [3.607]

  [3.607]
  + end

  +

  + function love.keyreleased(key, scancode)

  + end

  +

  + function love.mousepressed(x, y, button)
• edit in main.lua at line 50
  [3.612]

  [2.176]
  + function love.mousereleased(x, y, button)

  + end

  +
• edit in main.lua at line 75
  [2.679]→[2.679:684](∅→∅),[2.684]→[3.612:653](∅→∅),[3.612]→[3.612:653](∅→∅)
  − end

  −

  − function love.keyreleased(key, scancode)
• edit in main.lua at line 76
  [3.657]→[3.657:750](∅→∅)
  −

  − function love.mousepressed(x, y, button)

  − end

  −

  − function love.mousereleased(x, y, button)

  − end
• file addition: keychord.lua (----------)
  [8.2]
  + -- Keyboard driver

  +

  + function love.keypressed(key, scancode, isrepeat)

  + if key == 'lctrl' or key == 'rctrl' or key == 'lalt' or key == 'ralt' or key == 'lshift' or key == 'rshift' or key == 'lgui' or key == 'rgui' then

  + -- do nothing when the modifier is pressed

  + end

  + -- include the modifier(s) when the non-modifer is pressed

  + keychord_pressed(combine_modifiers(key))

  + end

  +

  + function combine_modifiers(key)

  + local result = ''

  + local down = love.keyboard.isDown

  + if down('lctrl') or down('rctrl') then

  + result = result..'C-'

  + end

  + if down('lalt') or down('ralt') then

  + result = result..'M-'

  + end

  + if down('lgui') or down('rgui') then

  + result = result..'S-'

  + end

  + result = result..key

  + return result

  + end