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# coding: ASCII-8BIT
# The MIT License
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# This implements native php methods used by tcpdf, which have had to be
# reimplemented within Ruby.
module Rbpdf
# http://uk2.php.net/getimagesize
def getimagesize(filename)
return nil unless File.exist?(filename)
out = Hash.new
type = File::extname(filename)
if type == '.png'
open(filename,'rb') do |f|
# Check signature
return false if (f.read(8)!=137.chr + 'PNG' + 13.chr + 10.chr + 26.chr + 10.chr)
# Read header chunk
f.read(4)
return false if (f.read(4)!='IHDR')
out[0] = freadint(f)
out[1] = freadint(f)
out[2] = 'PNG'
out[3] = "height=\"#{out[1]}\" width=\"#{out[0]}\""
out['mime'] = 'image/png'
end
return out
end
unless Object.const_defined?(:Magick)
Error('No RMagick: Non-PNG file is not supported.: ' + filename);
return false
end
image = Magick::ImageList.new(filename)
width = image.columns
height = image.rows
out['mime'] = image.mime_type
out[0] = width
out[1] = height
# These are actually meant to return integer values But I couldn't seem to find anything saying what those values are.
# So for now they return strings. The only place that uses this at the moment is the parsejpeg method, so I've changed that too.
case image.mime_type
when "image/gif"
out[2] = "GIF"
when "image/jpeg"
out[2] = "JPEG"
when "image/png"
out[2] = "PNG"
when "image/webp", "image/x-webp"
out[2] = "WEBP"
out['mime'] = "image/webp"
when "image/vnd.wap.wbmp"
out[2] = "WBMP"
when "image/x-xpixmap"
out[2] = "XPM"
end
out[3] = "height=\"#{height}\" width=\"#{width}\""
# This needs work to cover more situations
# I can't see how to just list the number of channels with ImageMagick / rmagick
case image.colorspace.to_s.downcase
when 'cmykcolorspace'
out['channels'] = 4
when 'rgbcolorspace', 'srgbcolorspace' # Mac OS X : sRGBColorspace
if image.image_type.to_s == 'GrayscaleType' and image.class_type.to_s == 'PseudoClass'
out['channels'] = 0
else
out['channels'] = 3
end
when 'graycolorspace'
out['channels'] = 0
end
out['bits'] = image.channel_depth
out
end
end
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