bold, italics, underline

[lbr991]

Is there a way to apply bold/italics/underline on a font or do we have to switch fonts?

[JorjMcKie]

PyMuPDF offers multiple ways to output text:

• page.insert_text(), page.insert_textbox(): you have to switch fonts and compute the right continuing text position youself.
• fitz.TextWriter together with its methods: You also have to switch fonts, but there are elegant ways to find the write point to continue text with a different font.

In any above case, "underline" is no font option. You always must use a draw method or an underline annotation.

A third option is using fitz.Story. You must prepare a HTML source for your text. You can use all features offered by HTML5 syntax - including CSS styles.
Outputting a stroy is automatic, including line breaks and page breaks, font switching, colors, images etc. Please look up the respective documentation.

[lbr991]

Oh interesting. Is there a way to detect the latter case?

[JorjMcKie]

Check if the same text appears twice on extraction, the second mostly overlapping the first bbox.
But other methods can even evade this by giving the text characters a fat border line - not detectable.

[lbr991]

Thanks!
Can you explain what n is in span["flags"] & 2**n? I got it to print out the bold text with span["flags"] & 2**4 but could it be a different n in another case?

[JorjMcKie]

Look at the documentation here:

[lbr991]

• page.insert_text(), page.insert_textbox(): you have to switch fonts and compute the right continuing text position youself.
• fitz.TextWriter together with its methods: You also have to switch fonts, but there are elegant ways to find the write point to continue text with a different font.

The issue is that I want the text to wrap. insert_textbox() has the wrapping capability but fitz.TextWriter makes it easier to switch the fonts.
How can I switch the fonts with insert_textbox()? Or should I use a combination of both?

[JorjMcKie]

The problem with page.insert_textbox() is that you cannot easily find the exact location where the insertion ends.
So if you need switching fonts, TextWriter is your way to go. Its .fill_textbox() method is comparable plus it returns the point where the text ends. This can be used as the starting point for the text in a different font.
Mixing the two approaches is not possible.

[lbr991]

Sounds tricky, does fill_textbox() support wrapping of text? Looked at the docs but did not see this.

[JorjMcKie]

Yes it does. Also look at the examples here.