module Rbpdf
The MIT License
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This implements native php methods used by tcpdf, which have had to be reimplemented within Ruby.
Copyright © 2011-2017 NAITOH Jun Released under the MIT license www.opensource.org/licenses/MIT
Constants
- VERSION
Public Instance Methods
# File lib/core/rmagick.rb, line 27 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) out[0] = image.columns out[1] = image.rows # 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/vnd.wap.wbmp" out[2] = "WBMP" when "image/x-xpixmap" out[2] = "XPM" end out[3] = "height=\"#{image.rows}\" width=\"#{image.columns}\"" out['mime'] = image.mime_type # 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