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#!/usr/bin/ruby
require 'imlib2'
puts 'Using Imlib2-Ruby version ' + Imlib2::VERSION + '.'
#####################################
# allocate some colors #
# (test colors and color constants) #
#####################################
#black = Imlib2::Color::RgbaColor.new 0, 0, 0, 255
#white = Imlib2::Color::RgbaColor.new 255, 255, 255, 255
alpha = Imlib2::Color::RgbaColor.new 0, 0, 0, 128
black = Imlib2::Color::BLACK
white = Imlib2::Color::WHITE
##################################
# load an image #
# (test imlib2-style load_image) #
##################################
puts 'Testing Imlib2::Image::load_image'
im = Imlib2::Image.load_image 'images/bill_gates.jpg'
puts "im.width = #{im.width.to_s}\nim.height = #{im.height}"
##########################
# load a missing image #
# (test ruby-style load) #
##########################
puts 'Testing Exceptions with Imlib2::Image::load ' +
'(there should be an error here)'
begin
missing_image = Imlib2::Image.load 'alsjkfldfaljdfkaljdflkdf.gif'
rescue Imlib2::FileError
$stderr.puts 'Error loading image: ' + $!
end
# test load with blocks
puts "Testing Imlib2::Image::load with blocks " +
"(should print \"image loaded okay\",\n" +
"and not \"THIS SHOULDN'T BE PRINTED\")"
Imlib2::Image.load('images/clown.jpg') { |im| puts 'image loaded okay' }
Imlib2::Image.load('adklfj.png') { |im|
$stderr.puts "THIS SHOULDN'T BE PRINTED"
}
####################################
# save test image #
# (test flip, fill_rect, and save) #
####################################
puts "Testing Imlib2::Image#save (shouldn't print any errors)"
im.flip_horizontal!
im.fill_rect [10, 10], [im.width - 20, im.height - 20], alpha
im.save 'test_output_1.jpg'
########################################
# make a checkerboard #
# (test fill_rect and color constants) #
########################################
puts "Creating a checkerboard...\n" +
'Testing Imlib2::Image#fill_rect and Imlib2::Image#save'
w, h, bw, bh = 10, 10, 48, 48
bg, fg = Imlib2::Color::CYAN, Imlib2::Color::GREEN
im = Imlib2::Image.new w * bw, h * bh
im.fill_rect [0, 0], [640, 640], bg
0.upto(w / 2) { |x|
0.upto(h / 2) { |y|
(0..1).each { |i|
rect = [x * bw * 2 + bw * i, y * bh * 2 + bh * i, bw, bh]
im.fill_rect rect, fg
}
}
}
# test save
im.save 'test_output_2.png'
# test save with exceptions
puts 'Testing Imlib2::Image#save with exceptions (should print an error)'
begin
im.save "./cant/save/here/because/it/doesnt/exist/checkerboard.png"
rescue Imlib2::FileError
$stderr.puts 'Error saving image: ' + $!
end
puts 'Testing Imlib2::Image methods'
Imlib2::Image.load('images/clown.jpg'){ |im|
puts 'Testing Imlib2::Image#blur'
im2 = im.blur 5
begin
im2.save 'test_output_3.jpg'
rescue Imlib2::FileError
$stderr.puts 'Error saving image: ' + $!
exit 1
end
puts 'Testing Imlib2::Image#sharpen!'
im.sharpen! 5
begin
im.save 'test_output_4.jpg'
rescue Imlib2::FileError
$stderr.puts 'Error saving image: ' + $!
exit 1
end
puts 'Testing Imlib2::Image#draw_pixel'
0.upto(im.w) { |x|
y = im.h / 2 + im.h / 2 * Math::sin(1.0 * x / im.w * 2 * Math::PI - Math::PI)
im.draw_pixel x, y, Imlib2::Color::GREEN
im.draw_pixel x - 5, y, Imlib2::Color::BLUE
im.draw_pixel x - 10, y, Imlib2::Color::RED
}
begin
im.save 'test_output_5.jpg'
rescue Imlib2::FileError
$stderr.puts 'Error saving image: ' + $!
exit 1
end
}
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