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PO
primarykey
Id
7019828
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2011-08-11T01:22:44.493
FavoriteCount
0
LastActivityDate
2011-08-11T03:22:29.690
LastEditDate
2011-08-11T03:22:29.690
LastEditorUserId
127255
OwnerUserId
127255
ParentId
7000785
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
<p>If you're happy to use a c-extension you can achieve this with the ruby-gnome2 bindings. You'll need the poppler and gdk_pixbuf2 gems.</p> <p>The API docs for these gems are a little skimpy, but you can find what there is at <a href="http://ruby-gnome2.sourceforge.jp/" rel="nofollow">http://ruby-gnome2.sourceforge.jp/</a></p> <pre><code>require 'poppler' require 'gdk_pixbuf2' SCALE = 2 filename = "source.pdf" doc = Poppler::Document.new(filename) page = doc.get_page(0) # render the page to an in-memory buffer width, height = *page.size buf = Gdk::Pixbuf.new(Gdk::Pixbuf::COLORSPACE_RGB, true, 8, width*SCALE, height*SCALE) page.render(0, 0, width*SCALE, height*SCALE, SCALE, 0, buf) # copy the rendered buffer into an pixmap for further editing map = Gdk::Pixmap.new(nil, width*SCALE, height*SCALE, 24) map.draw_pixbuf(nil, buf, 0, 0, 0, 0, -1, -1, Gdk::RGB::DITHER_NONE, 0, 0) # setup highlight color and blend function gc = Gdk::GC.new(map) # graphics context gc.rgb_fg_color = Gdk::Color.new(65535, 65535, 0) gc.function = Gdk::GC::AND # find each match and highlight it. The co-ordinate maths is ugly but # necesary to convert from PDF co-ords to Pixmap co-ords page.find_text("the").each do |match| matchx = match.x1 * SCALE matchy = (height - match.y2) * SCALE matchw = (match.x2-match.x1) * SCALE matchh = (match.y2-match.y1) * SCALE map.draw_rectangle(gc, true, matchx, matchy, matchw, matchh) end # save the buffer to a JPG newbuf = Gdk::Pixbuf.from_drawable(nil, map, 0, 0, width*SCALE, height*SCALE) newbuf.save("foo.jpg", "jpeg") </code></pre>
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1. This table or related slice is empty.
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1. POIn Ruby Search PDF, highlight text found, export JPG of the page
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1. PTAnswer
UserLastEditorUserId
1. USJames Healy
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1. USJames Healy
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1. POIn Ruby Search PDF, highlight text found, export JPG of the page
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1. COthank you i'll try that out. Looks like what i need!
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  USfregas
2. COgreat. If it works out, don't forget to accept the answer
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  USJames Healy

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