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1 # The MIT License
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2 #
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3 # Permission is hereby granted, free of charge, to any person obtaining a copy
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4 # of this software and associated documentation files (the "Software"), to deal
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5 # in the Software without restriction, including without limitation the rights
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6 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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7 # copies of the Software, and to permit persons to whom the Software is
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8 # furnished to do so, subject to the following conditions:
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9 #
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10 # The above copyright notice and this permission notice shall be included in
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11 # all copies or substantial portions of the Software.
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12 #
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13 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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18 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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19 # THE SOFTWARE.
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20 #
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21 # This implements native php methods used by tcpdf, which have had to be
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22 # reimplemented within Ruby.
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23
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24 module RFPDF
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25
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26 # http://uk2.php.net/getimagesize
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27 def getimagesize(filename)
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28 out = Hash.new
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29 out[2] = ImageScience.image_type(filename)
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30
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31 image = ImageScience.with_image(filename) do |img|
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32 out[0] = image.width
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33 out[1] = image.height
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34
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35 # These are actually meant to return integer values But I couldn't seem to find anything saying what those values are.
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36 # 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.
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37 case out[2]
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38 when "GIF"
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39 out['mime'] = "image/gif"
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40 when "JPEG"
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41 out['mime'] = "image/jpeg"
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42 when "PNG"
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43 out['mime'] = "image/png"
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44 when "WBMP"
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45 out['mime'] = "image/vnd.wap.wbmp"
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46 when "XPM"
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47 out['mime'] = "image/x-xpixmap"
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48 end
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49 out[3] = "height=\"#{image.height}\" width=\"#{image.width}\""
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50
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51 if image.colorspace == "CMYK" || image.colorspace == "RGBA"
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52 out['channels'] = 4
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53 elsif image.colorspace == "RGB"
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54 out['channels'] = 3
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55 end
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56
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57 out['bits'] = image.depth
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58 out['bits'] /= out['channels'] if out['channels']
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59 end
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60
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61 out
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62 end
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63
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64 end |