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|
# Copyright (C) 2016-2024 Ruby-GNOME Project Team
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
class TestPixbuf < Test::Unit::TestCase
include GdkPixbufTestUtils
sub_test_case(".new") do
sub_test_case("legacy form") do
setup do |&block|
suppress_warning do
block.call
end
end
test "basic" do
colorspace = GdkPixbuf::Colorspace::RGB
width = 100
height = 100
has_alpha = true
bits_per_sample = 8
pixbuf = GdkPixbuf::Pixbuf.new(colorspace,
has_alpha,
bits_per_sample,
width,
height)
assert_equal(colorspace, pixbuf.colorspace)
assert_equal(width, pixbuf.width)
assert_equal(height, pixbuf.height)
assert_equal(has_alpha, pixbuf.has_alpha?)
assert_equal(bits_per_sample, pixbuf.bits_per_sample)
end
test "file" do
pixbuf = GdkPixbuf::Pixbuf.new(fixture_path("gnome-logo-icon.png"))
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
end
test "file: size" do
pixbuf = GdkPixbuf::Pixbuf.new(fixture_path("gnome-logo-icon.png"),
32, 48)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(32, pixbuf.height)
end
test "file: scale" do
pixbuf = GdkPixbuf::Pixbuf.new(fixture_path("gnome-logo-icon.png"),
32, 48, false)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(48, pixbuf.height)
end
test "subpixbuf" do
src_pixbuf = GdkPixbuf::Pixbuf.new(fixture_path("gnome-logo-icon.png"))
pixbuf = GdkPixbuf::Pixbuf.new(src_pixbuf, 0, 0, 32, 32)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(32, pixbuf.height)
end
test "data" do
src_pixbuf = GdkPixbuf::Pixbuf.new(fixture_path("gnome-logo-icon.png"))
data = src_pixbuf.pixels.pack("C*")
pixbuf = GdkPixbuf::Pixbuf.new(data,
src_pixbuf.colorspace,
src_pixbuf.has_alpha?,
src_pixbuf.bits_per_sample,
src_pixbuf.width,
src_pixbuf.height,
src_pixbuf.row_stride,
)
assert_equal(src_pixbuf.pixels, pixbuf.pixels)
end
end
sub_test_case("Hash form") do
test "basic" do
colorspace = GdkPixbuf::Colorspace::RGB
width = 100
height = 100
has_alpha = true
bits_per_sample = 8
pixbuf = GdkPixbuf::Pixbuf.new(:colorspace => colorspace,
:has_alpha => has_alpha,
:width => width,
:height => height,
:bits_per_sample => bits_per_sample)
assert_equal(colorspace, pixbuf.colorspace)
assert_equal(width, pixbuf.width)
assert_equal(height, pixbuf.height)
assert_equal(has_alpha, pixbuf.has_alpha?)
assert_equal(bits_per_sample, pixbuf.bits_per_sample)
end
test "file" do
filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
end
test "file: size" do
filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => filename,
:width => 32,
:height => 48)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(32, pixbuf.height)
end
test "file: scale" do
filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => filename,
:width => 32,
:height => 48,
:scale => true,
:preserve_aspect_ratio => false)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(48, pixbuf.height)
end
test "subpixbuf" do
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
pixbuf = suppress_warning do
GdkPixbuf::Pixbuf.new(:src_pixbuf => src_pixbuf,
:src_x => 0,
:src_y => 0,
:width => 32,
:height => 32)
end
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(32, pixbuf.height)
end
test "data" do
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
data = src_pixbuf.pixels.pack("C*")
pixbuf = GdkPixbuf::Pixbuf.new(:data => data,
:colorspace => src_pixbuf.colorspace,
:has_alpha => src_pixbuf.has_alpha?,
:bits_per_sample => src_pixbuf.bits_per_sample,
:width => src_pixbuf.width,
:height => src_pixbuf.height,
:row_stride => src_pixbuf.row_stride,
)
assert_equal(src_pixbuf.pixels, pixbuf.pixels)
end
test "bytes" do
only_version(2, 32)
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
bytes = src_pixbuf.pixels.flatten.pack("C*")
pixbuf = GdkPixbuf::Pixbuf.new(:bytes => bytes,
:colorspace => src_pixbuf.colorspace,
:has_alpha => src_pixbuf.has_alpha?,
:bits_per_sample => src_pixbuf.bits_per_sample,
:width => src_pixbuf.width,
:height => src_pixbuf.height,
:row_stride => src_pixbuf.row_stride,
)
assert_equal(src_pixbuf.pixels, pixbuf.pixels)
end
test "resource" do
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
resource = Gio::Resource.load(fixture_path("image.gresource"))
Gio::Resources.register(resource)
begin
resource_path = "/org/ruby/gnome/gnome-logo-icon.png"
pixbuf = GdkPixbuf::Pixbuf.new(:resource => resource_path)
assert_equal(src_pixbuf.pixels, pixbuf.pixels)
ensure
Gio::Resources.unregister(resource)
end
end
test "resource: scale" do
resource = Gio::Resource.load(fixture_path("image.gresource"))
Gio::Resources.register(resource)
begin
resource_path = "/org/ruby/gnome/gnome-logo-icon.png"
pixbuf = GdkPixbuf::Pixbuf.new(:resource => resource_path,
:width => 32,
:height => 48,
:scale => true,
:preserve_aspect_ratio => false)
assert_equal([
GdkPixbuf::Colorspace::RGB,
32,
48,
],
[
pixbuf.colorspace,
pixbuf.width,
pixbuf.height,
])
ensure
Gio::Resources.unregister(resource)
end
end
end
def test_subpixbuf
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
pixbuf = src_pixbuf.subpixbuf(0, 0, 32, 32)
assert_equal(GdkPixbuf::Colorspace::RGB, pixbuf.colorspace)
assert_equal(32, pixbuf.width)
assert_equal(32, pixbuf.height)
end
end
def test_dup
filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
assert_equal(pixbuf.pixels, pixbuf.dup.pixels)
end
def test_fill!
filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
pixbuf.fill!(0xffffffff)
assert_equal([0xff] * (pixbuf.row_stride * pixbuf.height),
pixbuf.pixels)
end
def test_rotate
filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
inverted_pixbuf = pixbuf.rotate(:upsidedown)
assert_not_equal(pixbuf.pixels, inverted_pixbuf.pixels)
inverted_twice_pixbuf = inverted_pixbuf.rotate(:upsidedown)
assert_equal(pixbuf.pixels, inverted_twice_pixbuf.pixels)
end
sub_test_case("saturate_and_pixelate") do
# Based on the function gdk_pixbuf_saturate_and_pixelate
# in gdk-pixbuf-util.c
def saturate_and_pixelate_pixels(pixbuf, saturation, pixelate)
alpha = pixbuf.has_alpha?
width = pixbuf.width
height = pixbuf.height
pixels = pixbuf.pixels
dest_pix = []
dark_factor = 0.7
height.times do |i|
width.times do |k|
j =((i ) * width + k) * 4
intens = intensity(pixels[j + 0], pixels[j + 1], pixels[j + 2])
if pixelate == true && ( (i + k) % 2 == 0)
dest_pix << (intens / 2 + 127).floor
dest_pix << (intens / 2 + 127).floor
dest_pix << (intens / 2 + 127).floor
elsif pixelate == true
dest_pix << clamp_uchar(saturate(pixels[j + 0],
saturation, intens) * dark_factor).floor
dest_pix << clamp_uchar(saturate(pixels[j + 1],
saturation, intens) * dark_factor).floor
dest_pix << clamp_uchar(saturate(pixels[j + 2],
saturation, intens) * dark_factor).floor
else
dest_pix << clamp_uchar(saturate(pixels[j + 0], saturation, intens)).floor
dest_pix << clamp_uchar(saturate(pixels[j + 1], saturation, intens)).floor
dest_pix << clamp_uchar(saturate(pixels[j + 2], saturation, intens)).floor
end
dest_pix << pixels[j + 3] if alpha
end
end
dest_pix
end
def saturate(value, saturation, intensity)
(1.0 - saturation) * intensity + saturation * (1.0 * value)
end
def clamp_uchar(x)
[0, x, 255].sort[1]
end
def intensity(r, g, b)
(r * 0.30 + g * 0.59 + b * 0.11).floor
end
test "no modifications" do
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
pixbuf = src_pixbuf.saturate_and_pixelate(1, false)
assert_equal(src_pixbuf.pixels, pixbuf.pixels)
end
test "normal usage" do
if /\Ai\d86-/ === RUBY_PLATFORM
omit("floating point calculation result is different on i386")
end
filename = fixture_path("gnome-logo-icon.png")
src_pixbuf = GdkPixbuf::Pixbuf.new(:file => filename)
pixbuf = src_pixbuf.saturate_and_pixelate(0, true)
ref = saturate_and_pixelate_pixels(src_pixbuf, 0, true)
assert_equal(ref, pixbuf.pixels, ref.size)
pixbuf = src_pixbuf.saturate_and_pixelate(0.5, true)
ref = saturate_and_pixelate_pixels(src_pixbuf, 0.5, true)
assert_equal(ref, pixbuf.pixels)
end
end
sub_test_case("#save") do
test("no options") do
png_filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => png_filename)
tiff = pixbuf.save("tiff")
assert_equal(["image/tiff", false],
Gio::ContentType.guess(nil, tiff))
end
test("filename") do
png_filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => png_filename)
output = Tempfile.new(["pixbuf", ".tiff"])
output.close
pixbuf.save(output.path)
output.open
assert_equal(["image/tiff", false],
Gio::ContentType.guess(nil, output.read))
end
test(":filename") do
png_filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => png_filename)
output = Tempfile.new(["pixbuf", ".tiff"])
output.close
pixbuf.save(output.path, "tiff")
output.open
assert_equal(["image/tiff", false],
Gio::ContentType.guess(nil, output.read))
end
end
test("#save_to_buffer") do
png_filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => png_filename)
tiff = suppress_warning do
pixbuf.save_to_buffer("tiff")
end
assert_equal(["image/tiff", false],
Gio::ContentType.guess(nil, tiff))
end
test("#read_pixel_bytes") do
only_version(2, 32)
png_filename = fixture_path("gnome-logo-icon.png")
pixbuf = GdkPixbuf::Pixbuf.new(:file => png_filename)
assert_equal(pixbuf.pixels.pack("C*"),
pixbuf.read_pixel_bytes.to_s)
end
end
|
