The font size in a PDF file?

I am trying to determine the font size of the current font in a pdf stream. For example. As it has been established in another post that F1 made reference to a police appearing in the resource dictionary, can someone tell me what means the number 1 , sitting next to the F1. The example below declares it is used to set the font size but as it has been argued, is not really the case. I use a library open source C++ which tells me that when I extracted the font size, the font size is 12, not 1? Why is this? The number 1 is not "seem to refer to anything in dictionaries, but I thought that there may be a standard PDF I'm on that indicates that the size of 1 unit of F3 fonts (Times Roman) is equivalent to a size 12 fonts (specifically for 1 unit Times Roman, a proxy for the font size)."

This hypothesis is correct? I am struggling to find an explanation of it in IS0 3200-1. Maybe someone can point me in the right direction?

data flow

Begin BT % text object

/ F1 1 Tf % set the font text and size

64 0 0 64 7,1771 2,4414 Tm % Set matrix text

0 Tc % Set character spacing

0% Tw set word spacing

The really important thing to 32000-1 Trm text rendering matrix calculation. This is not defined by any one operator, but is the combination of several things in the graphics state. Thus, the size of the text is the result of a calculation, which can include the values of Tf, Tm and other things. This is something that many people find difficult because they are looking for a simple model to get the size of the police. In fact to get the size of the font, you need to recognize and analyze many operators, including the BT/AND/from many operators/cm/Q/q. You create a graphics state stack.  Consider this piece of code you have posted:

2 0 0 2 0 0 cm

q

3 0 0 3 0 100 cm

BT

... same code as above...

... text...

AND

Q

BT

... same as a above code...

... text...

AND

This will make the text twice. The first text is 6 times the original size, the second text is 2 times the size.

Tags: Adobe Developers

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