lib/bitmap/test_bitmap.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2015 Budi Kurniawan <budi2020@gmail.com>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # This file tests the Bitmap class in the bitmap module
  18 # It has to be called by passing two arguments:
  19 #
  20 #   - An input bitmap file
  21 #   - An output bitmap file
  22 #
  23 # It converts the input bitmap to grayscale and save it to the specified
  24 # output file. In addition, it creates a blank.bmp file in the current directory.
  25 #
  26 #
  27 # A module for testing the classes in the bitmap module
  28 module test_bitmap is test
  29
  30 import bitmap
  31
  32 class TestBitmap
  33         test
  34
  35         fun test_grayscale is test do
  36                 var bitmap = new Bitmap.with_size(400, 300)
  37                 for y in [0..300] do
  38                         for x in [0..200] do bitmap.set_pixel(x, y, 0x0077AAAA)
  39                 end
  40                 bitmap.grayscale
  41                 bitmap.save("./blank.bmp")
  42         end
  43 end