get("#388") -- rect functions

get("#348") -- rgb functions

get("#356") -- num2hex

function findContents()

  hashes = otherresults["#442"] or error("Need result of #442, please recalc")

  j, icons = nil, {}

  while true do

    i, j, r, hash = string.find(hashes, "(%d+, %d+, %d+, %d+) %-> ([a-f0-9]+)", j)

    if i == nil then break end

    icons[hash] = r

  end

  r = icons["00645074"] or icons["0061777a"]

  if r == nil then return "LXTerminal icon not found" end

  -- look for a mostly black line below the icon

  r = stringtorect(r)

  x, y = r.x, r.y

  contents_y1 = nil

  while y < img.height and contents_y1 == nil do

    w = 50

    b = 0

    for xx = x, x+w-1 do

      b = b+bright(rgb(img.getInt(xx, y)))

    end

    b = b/w

    --print("Brightness at", y, ":", b)

    if b < 0.01 then

      contents_y1 = y

    end

    y = y+1

  end

  if contents_y1 == nil then return "Terminal contents not found" end

  -- find left side of contents

  contents_x1 = x

  while contents_x1 > 0 and img.getInt(contents_x1-1, contents_y1) == 0 do

    contents_x1 = contents_x1-1

  end

  -- find width of contents

  while x < img.width and img.getInt(x, contents_y1) == 0 do

    x = x+1

  end

  contents_x2 = x-1

  -- find bottom of contents

  y = contents_y1+1

  while y < img.height and

    (img.getInt(contents_x1, y) ~= 0xa4a4a4 or

     img.getInt(contents_x1+1, y) ~= 0xa4a4a4) do

    --print("y", y, num2hex(img.getInt(contents_x1, y)), num2hex(img.getInt(contents_x1+1, y)))

    y = y+1

  end

  contents_y2 = y

  contents_y1 = contents_y1+1

end