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# encoding: UTF-8
# KLayout Layout Viewer
# Copyright (C) 2006-2025 Matthias Koefferlein
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
if !$:.member?(File::dirname($0))
$:.push(File::dirname($0))
end
load("test_prologue.rb")
class LAYPixelBuffer_TestClass < TestBase
def compare(pb1, pb2)
if pb1.width != pb2.width || pb1.height != pb2.height
return false
end
pb1.width.times do |x|
pb1.height.times do |y|
if pb1.pixel(x, y) != pb2.pixel(x, y)
return false
end
end
end
return true
end
def test_1
pb_null = RBA::PixelBuffer::new
assert_equal(pb_null.width, 0)
assert_equal(pb_null.height, 0)
pb = RBA::PixelBuffer::new(10, 20)
assert_equal(compare(pb_null, pb), false)
assert_equal(pb_null == pb, false)
assert_equal(pb.width, 10)
assert_equal(pb.height, 20)
assert_equal(pb.transparent, false)
pb_copy = pb.dup
pb.transparent = true
assert_equal(pb.transparent, true)
assert_equal(pb_copy == pb, false)
pb.fill(0xf0010203)
assert_equal(pb.pixel(0, 0), 0xf0010203)
assert_equal(pb.pixel(1, 2), 0xf0010203)
pb.set_pixel(1, 2, 0xff102030)
assert_equal(pb.pixel(0, 0), 0xf0010203)
assert_equal(pb.pixel(1, 2), 0xff102030)
pb.transparent = false
assert_equal(pb.transparent, false)
pb_copy = pb.dup
assert_equal(compare(pb_copy, pb), true)
assert_equal(pb_copy == pb, true)
pb.set_pixel(1, 2, 0x112233)
assert_equal(pb.pixel(0, 0), 0xf0010203)
assert_equal(pb.pixel(1, 2), 0xff112233)
assert_equal(pb_copy.pixel(1, 2), 0xff102030)
assert_equal(compare(pb_copy, pb), false)
assert_equal(pb_copy == pb, false)
pb_copy.swap(pb)
assert_equal(pb_copy.pixel(1, 2), 0xff112233)
assert_equal(pb.pixel(1, 2), 0xff102030)
end
def test_2
pb = RBA::PixelBuffer::new(10, 20)
pb.fill(0xf0010203)
pb1 = pb.dup
pb.set_pixel(1, 2, 0x112233)
assert_equal(compare(pb1, pb), false)
assert_equal(pb1 == pb, false)
diff = pb1.diff(pb)
pb1.patch(diff)
assert_equal(compare(pb1, pb), true)
assert_equal(pb1 == pb, true)
end
def test_3
pb = RBA::PixelBuffer::new(10, 20)
pb.fill(0xf0010203)
pb1 = pb.dup
pb.set_pixel(1, 2, 0x112233)
pb1 = pb.dup
pb.set_pixel(1, 2, 0xf0112233)
assert_equal(compare(pb1, pb), true)
assert_equal(pb1 == pb, true) # not transparent -> alpha is ignored
pb1.transparent = true
pb.transparent = true
assert_equal(compare(pb1, pb), true)
assert_equal(pb1 == pb, true)
pb.set_pixel(1, 2, 0xf0112233)
assert_equal(compare(pb1, pb), false)
assert_equal(pb1 == pb, false) # now, alpha matters
end
def test_4
pb = RBA::PixelBuffer::new(10, 20)
pb.transparent = true
pb.fill(0xf0010203)
if pb.respond_to?(:to_qimage)
assert_equal(pb.to_qimage.pixel(2, 3), 0xf0010203)
pb_copy = RBA::PixelBuffer::from_qimage(pb.to_qimage)
assert_equal(compare(pb, pb_copy), true)
end
png = pb.to_png_data
assert_equal(png.size > 20 && png.size < 200, true) # some range because implementations may differ
pb_copy = RBA::PixelBuffer.from_png_data(png)
assert_equal(compare(pb, pb_copy), true)
tmp = File::join($ut_testtmp, "tmp.png")
pb.write_png(tmp)
pb_copy = RBA::PixelBuffer.read_png(tmp)
assert_equal(compare(pb, pb_copy), true)
end
def test_11
pb = RBA::BitmapBuffer::new
assert_equal(pb.width, 0)
assert_equal(pb.height, 0)
pb = RBA::BitmapBuffer::new(10, 20)
assert_equal(pb.width, 10)
assert_equal(pb.height, 20)
pb.fill(false)
assert_equal(pb.pixel(0, 0), false)
assert_equal(pb.pixel(1, 2), false)
pb.set_pixel(1, 2, true)
assert_equal(pb.pixel(0, 0), false)
assert_equal(pb.pixel(1, 2), true)
pb_copy = pb.dup
assert_equal(compare(pb_copy, pb), true)
pb.set_pixel(1, 3, true)
assert_equal(pb.pixel(0, 0), false)
assert_equal(pb.pixel(1, 2), true)
assert_equal(pb.pixel(1, 3), true)
assert_equal(pb_copy.pixel(1, 3), false)
assert_equal(compare(pb_copy, pb), false)
pb_copy.swap(pb)
assert_equal(pb.pixel(1, 3), false)
assert_equal(pb_copy.pixel(1, 3), true)
end
def test_12
pb = RBA::BitmapBuffer::new(10, 20)
pb.fill(false)
pb.set_pixel(2, 3, true)
if pb.respond_to?(:to_qimage)
assert_equal(pb.to_qimage.pixel(0, 0), 0xff000000)
assert_equal(pb.to_qimage.pixel(2, 3), 0xffffffff)
pb_copy = RBA::BitmapBuffer::from_qimage(pb.to_qimage)
assert_equal(compare(pb, pb_copy), true)
end
png = nil
begin
png = pb.to_png_data
rescue => ex
# No PNG support
end
if png
assert_equal(png.size > 20 && png.size < 200, true) # some range because implementations may differ
pb_copy = RBA::BitmapBuffer.from_png_data(png)
assert_equal(compare(pb, pb_copy), true)
tmp = File::join($ut_testtmp, "tmp.png")
pb.write_png(tmp)
pb_copy = RBA::BitmapBuffer.read_png(tmp)
assert_equal(compare(pb, pb_copy), true)
end
end
end
load("test_epilogue.rb")
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