43 lines
1.3 KiB
Ruby
43 lines
1.3 KiB
Ruby
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#
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# Convert bitmap files to a paginated print-ready file
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#
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class TempBitmapToPaginatedPrint < OutputFilter
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include PrintHandling, Pagination
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def build(input, output, side = "none")
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build_for_print(input, output, side)
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end
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def targets(info)
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(@config['spread'] == true) ? [ filename(info) + "-left.png", filename(info) + "-right.png" ] : filename(info)
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end
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def process_pagination(output, face, total_faces, left, right)
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page_width, page_height = calculate_page_size
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commands = [
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"-size #{page_width * 2}x#{page_height}",
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"xc:white"
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]
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left_creep = 0
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right_creep = 0
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if @config['page_thickness']
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max_creep = (total_faces / 2)
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left_creep = ((max_creep - (face - max_creep).abs) * @config['page_thickness'].to_f * @config['dpi'].to_i).floor
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right_creep = ((max_creep - (total_faces - face - max_creep).abs) * @config['page_thickness'].to_f * @config['dpi'].to_i).floor
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end
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if left
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commands << "\"#{left}\" -geometry +#{left_creep.to_i}+0 -composite"
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end
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if right
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commands << "\"#{right}\" -geometry +#{(page_width + right_creep).to_i}+0 -composite"
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end
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commands << "-colorspace RGB -depth 8 pnm:- | sam2p -c:lzw -m:dpi:#{(72.0 * (72.0 / @config['dpi'].to_f))} - PDF:\"#{output}\""
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convert(commands)
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end
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end
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