parsing - Find Vertical spacing of text lines? -
parsing - Find Vertical spacing of text lines? -
in itext know attributes of text can extracted:
gs → graphics state
word spacing
character spacing
font size
but vertical spacing? example, in ms word 1 sets paragraph spacing {before/after paragraph, line spacing} , these generated resultant pdf. if these vertical spacing info needs recovered analyzing pdf file, there operator 1 should pay attending to?
in adobe portable document format reference 1.3 1 might see
th → horizontal spacing
txty → move text rendering location respect start of line segment
tlm → line matrix
tm → text matrix
tf → font
ts → text rise
but haven't found operator/meta   info  straight specifies vertical spacing of text. perhaps related how current text line tlm positioned? how location of tlm determined?
 parsing pdf itextsharp itext 
 
  
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