Vertically align text in a Rect when using insert_textbox

[rafayaar]

Hi @JorjMcKie
I have 2 things to ask

• I am using insert_textbox to insert text within provided rect. I can easily horizontal align using align, but there is no direct way to vertically align.
  When text is insert in a rect, it is insert on top left. I would want it to vertically align.
  How can I vertically align a text in Rect.
  This discussion didn't really helped me out cause it uses textwriter in text Link-Discussion-1662

• I am also rotating the text within text box. I am using morph=(point,matrix). Origin of rotation is top left as we have point system with us. I can calculate width/2 and height/2 of Rect and rotate accordingly but text rotates based on center of Rect and NOT OF TEXT actually.

Would really appreciate your answer. Thanks

[rafayaar]

I am trying to re render attached PDF. Attached screenshot is where I am having issues

dinnerly 2.pdf

[JorjMcKie]

First Point

There indeed is no direct support of centering (aligning???) vertically. But with a small effort you can achieve the effect.
Just execute on a temporary page and check the return code (rc): this is the height of the unused sub-rectangle at the bottom.
Use the half of this value to write to a accordingly defined other rectangle page.insert_textbox(rect + (0, rc/2, 0, rc/2), ...).
This modified rect is shifted downwards.
To compute rc:

temp = pymupdf.open()
tpage=temp.new_page(width=rect.width, height=rect.height)
rc = tpage.insert_textbox(rect, ...)
temp.close()

[rafayaar]

This itself adjust the rect but not the text inside it. My goal is to vertically center text in a Rect

[JorjMcKie]

But the effect looks like vertically centered text in the original rect:

import pymupdf

text = "show vertically centered in the original rectangle"
rect = pymupdf.Rect(100, 100, 200, 200)
doc = pymupdf.open()
page = doc.new_page()
temp = pymupdf.open()
tpage = temp.new_page(width=rect.width, height=rect.height)
rc = tpage.insert_textbox(rect, text)
page.insert_textbox(rect + (0, rc / 2, 0, rc / 2), text)
page.draw_rect(rect, color=(1, 0, 0))
doc.ez_save(__file__.replace(".py", ".pdf"))

What are your objections?

[rafayaar]

Yes this helps.
My goal is to vertically align the text and from the center of the text itself do a rotation.
Currently if I apply morph it rotates from top left of the text. I want rotation from center of text such that it rotates from center origin

[rafayaar]

Increase the font size and the text will be pushed towards bottom

[JorjMcKie]

As per your other point:

• We cannot write text along some curve - only straight lines. This will not be supported ever presumably.
• As far as I can see, the only way to approximately achieve what you want is
  • make an upright version,
  • then make an image of the result
  • insert this image as a temporary PDF page via page.show_pdf_page(... ,rotate=theta) with a desired angle.

[rafayaar]

@JorjMcKie I have observed that insert_textbox comes with padding. Please correct me if I am wrong

[JorjMcKie]

What does padding mean?

[rafayaar]

When text is inserted into textbox it keeps some space inside the borders of a rect. Even though there is visibly some space left to fill entire textbox, it just doesn't render it at all.
I extract a PDF using get_text block methods and for each text element its rect. When i redraw using same dimensions and same font family,size it doesn't render the text in textbox. Text appear when either I reduce the font size a bit (e.g) *0.9 or increase rect dimesnions