aseprite/tests/scripts/cels.lua

-- Copyright (C) 2020  Igara Studio S.A.
-- Copyright (C) 2018  David Capello
--
-- This file is released under the terms of the MIT license.
-- Read LICENSE.txt for more information.

dofile('./test_utils.lua')

do
  local s = Sprite(32, 32)
  for i = 1,3 do s:newFrame() end
  assert(#s.frames == 4)

  -- Layer a and b
  local a = s.layers[1]
  local b = s:newLayer()

  local ca = { s.cels[1],
               s.cels[2],
               s.cels[3] }

  local cb = { s:newCel(b, 1),
               s:newCel(b, 2, Image(8, 8), 4, 4),
               s:newCel(b, 3, Image(32, 10), 16, 10) }

  assert(cb[1].bounds == Rectangle(0, 0, 32, 32))
  assert(cb[2].bounds == Rectangle(4, 4, 8, 8))
  assert(cb[3].bounds == Rectangle(16, 10, 32, 10))

  -- Check how layer cels are updated when we delete a cel in the middle

  assert(cb[1] == b.cels[1])
  assert(cb[2] == b.cels[2])
  assert(cb[3] == b.cels[3])

  local i = 1
  for k,v in ipairs(b.cels) do
    assert(i == k)
    assert(v == b.cels[k])
    i = i+1
  end

  s:deleteCel(cb[2])
  assert(cb[1] == b.cels[1])
  assert(cb[3] == b.cels[2])
end

-- Some extra tests of newCel() and deleteCel()
do
  local s = Sprite(4, 4, ColorMode.INDEXED)
  local layer = app.activeLayer
  app.bgColor = 0
  app.command.BackgroundFromLayer()
  expect_img(s.cels[1].image, { 0, 0, 0, 0,
                                0, 0, 0, 0,
                                0, 0, 0, 0,
                                0, 0, 0, 0 })

  -- Crash in old versions undoing newCel() in a background layer
  s:newCel(layer, 1)
  app.undo()

  -- Check that newCel clears with bgColor in background layer
  local img = Image(ImageSpec{ width=2, height=2,
                               colorMode=ColorMode.INDEXED })
  array_to_pixels({ 0, 1,
                    2, 3 }, img)

  app.bgColor = Color(1) -- bgColor used to clear the background cel
  s:newCel(layer, 1, img, Point(1, 1))
  expect_img(s.cels[1].image, { 1, 1, 1, 1,
                                1, 0, 1, 1,
                                1, 2, 3, 1,
                                1, 1, 1, 1 })
  app.undo()

  -- Check deleteCel()
  app.bgColor = Color(2)
  s:deleteCel(layer, 1)
  expect_img(s.cels[1].image, { 2, 2, 2, 2,
                                2, 2, 2, 2,
                                2, 2, 2, 2,
                                2, 2, 2, 2 })
  app.undo()

end