Word wrapping

[Tengiz Adamashvili]

{
"x": 7.9914062500000025,
"y": 3.984375000000001,
"w": 1292.917,
"clr": 0,
"A": "left",
"R": [
{
"T": "SECTION%3A%20CON",
"S": -1,
"TS": [3, 182, 0, 0]
}
]
},
{
"x": 19.10241171875,
"y": 3.984375000000001,
"w": 984.6790000000001,
"clr": 0,
"A": "left",
"R": [
{
"T": "TACT%20LENS",
"S": -1,
"TS": [3, 182, 0, 0]
}
]
},

This was the "SECTION: CONTACT LENS" string in reference PDF.

[Modesty Zhang]

This problem is a direct reflection of PDF text data stream structure: the string is in 2 text blocks in PDF, although it "appears" as one visually. Currently, I don't have enough time to work on an "auto word merge" or "auto word concatenation" during parsing, if anybody wants to take it on, a pull request is welcomed.

[Jonas Peschla]

Looking at the JSON above, shouldn't attribute w refer to the width of text and if so, x + w for the first text be less or equal to x of the second? If so, they appear to be in different units.

[Modesty Zhang]

Short answer is no. Because there might be kernings or spacings between them. But you are right about the unit, w should be converted by lib/pdfunit. Because the w value is not always accurate so it's not used in client renderer, I may forget to process it. I'll take a look at it when I get some time.

[Modesty Zhang]

fixed in v1.0.7

[Mateusz Gawliński]

I'm still experiencing the unit issue on v1.1.7.
In my case the original text says:

"4)narzędzia i urządzenia, których używanie może zagrażać życiu lub zdrowiu:"

while the JSON output is:

{
  "x": 4.183,
  "y": 4.811,
  "w": 21.323999999999998,
  "sw": 0.32553125,
  "clr": 0,
  "A": "left",
  "R": [
     {
       "T": "4)na",
       "S": -1,
       "TS": [
         0,
         15,
         0,
         0
       ]
     }
   ]
 },
{
  "x": 6.486,
  "y": 4.811,
  "w": 354.54,
  "sw": 0.32553125,
  "clr": 0,
  "A": "left",
  "R": [
    {
      "T": "rz%C4%99dzia%20i%20urz%C4%85dzenia%2C%20kt%C3%B3rych%20u%C5%BCywanie%20mo%C5%BCe%20zagra%C5%BCa%C4%87%20%C5%BCyciu%20lub%20zdrowiu%3A",
      "S": -1,
      "TS": [
        0,
        15,
        0,
        0
      ]
    }
  ]
}

It doesn't seem to add up.
The text from the first object is a part of the first word from the second object (don't mind the "4)" - let's just treat it as one word), so x + w from the first object should be somewhere between x and x + sw from the second object, right?

Am I doing something wrong?