Page.insert_box：If the text has too many characters, it will not be displayed completely.

[LittleMoDel]

Description of the bug

t1 = "text with rotate = 0.can't see me"，Can't display...

import fitz

doc = fitz.open()  # new or existing PDF
page = doc.new_page()  # new page, or choose doc[n]

# write in this overall area
rect = fitz.Rect(100, 100, 300, 150)

# partition the area in 4 equal sub-rectangles
CELLS = fitz.make_table(rect, cols=4, rows=1)

t1 = "text with rotate = 0.can't see me"  # these texts we will written
t2 = "text with rotate = 90."
t3 = "text with rotate = 180."
t4 = "text with rotate = 270."
text = [t1, t2, t3, t4]
red = fitz.pdfcolor["red"]  # some colors
gold = fitz.pdfcolor["gold"]
blue = fitz.pdfcolor["blue"]

shape = page.new_shape()  # create Shape
for i in range(len(CELLS[0])):
    shape.draw_rect(CELLS[0][i])  # draw rectangle
    shape.insert_textbox(
        CELLS[0][i], text[i], fontname="hebo", color=blue, rotate=90 * i
    )

shape.finish(width=0.3, color=red, fill=gold)
shape.commit()  # write all stuff to the page
doc.save("D:/tst/xxx.pdf")

How to reproduce the bug

PyMuPDF version

1.23.19

Operating system

Windows

Python version

3.11

[JorjMcKie]

This is normal!
And also documented.

If you do not want to care about whether something fits or not, use page.insert_htmlbox instead.

[LittleMoDel]

page.insert_htmlbox，and doc.subset_fonts() like this:

import fitz_new as fitz

# Example text
text = """
    <p>Hello World!</p>
    <p class="a">你好世界！</p>
    <span class="b">你好世界！我是span！</span>
    """
arch = fitz.Archive("D:/")
# These statements define which font file to use for regular, bold,
# italic and bold-italic text.
# We assign an arbitary common font-family for all 4 font files.
# The Story algorithm will select the right file as required.
# We request to use "comic" throughout the text.
css = """
@font-face {font-family: 'SimSun-ExtB Regular'; src: url(simsunb_reduce.ttf);}
@font-face {font-family: 'Arial Regular'; src: url(arial_reduce.ttf);}
@font-face {font-family: 'XinYuGongZhangJiaSongA'; src: url(OPPOSans.ttf);}
* {font-family: 'Arial Regular';}
.a {font-family: 'XinYuGongZhangJiaSongA';}
.b {font-family: 'SimSun-ExtB Regular';}
"""

doc = fitz.Document()
page = doc.new_page(width=300, height=300)  # make small page

page.insert_htmlbox(page.rect, text, css=css, archive=arch)

doc.subset_fonts(verbose=True)  # build subset fonts to reduce file size
doc.save("D:/123_new.pdf")

Is this normal？

[JorjMcKie]

Yes - set verbose to False if you don't want to see the messages.

Your save statement however is too careless!
Subset font building leaves the old large font there - you must compress!!!
doc.ez_save(...) has the necessary options.

[LittleMoDel]

doc.ez_save(...) Thank you very much!

'NotoSerif-Regular' and 'Droid Sans Fallback Regular',I did not set these two font.
I figure out the "SimSun-ExtB Regular" not support chinese,so that replaced by 'Droid Sans Fallback Regular'!
but 'NotoSerif-Regular' , I can‘t undestand...

[JorjMcKie]

but NotoSerif-Regular , I can't undestand...

This is one of MuPDF's default fonts when no other font-family name is applicable. Depending on the Unicodes encountered, either "NotoSerif-Regular" is chosen or "CharisSIL-Serif..." in such a case.
You must be using a Unicode that is not contained in any of the given fonts ...

But you can find out yourself what has happened: extract the text via "dict" or "rawdict" (respectively "json"/"rawjson") and you will which font has been used for what.

[LittleMoDel]

I have something can't handle about page.insert_htmlbox, code :

import fitz_new as fitz
doc = fitz.open("C:/tst/old.pdf") # open document
page = doc[0] # get the 1st page of the document
rect2=fitz.Rect(100,156,220,170)

text = """<div class="cs">分切尺寸：200*300mm</div>"""
arch = fitz.Archive("D:/")
CSS = """
@font-face {font-family: 'simsun'; src: url(simsun.ttc);}
@font-face {font-family: 'arial'; src: url(arial.ttf);}
# @font-face {font-family: 'OPPOSans'; src: url(OPPOSans.ttf);}

* {
    font-family: 'simsun',sans-serif;
    font-size:7.98pt;
    color:red;
    margin:0px;
    padding:0px;
    border-width:0px;
}
.cs {
    font-family: arial,sans-serif;
    # font-size:7.98pt;
}
"""
page.insert_htmlbox(
    rect2, 
    text, 
    css=CSS, 
    archive=arch,
    rotate=0,
    )
print(page.get_text("dict", sort=False))
doc.subset_fonts(verbose=True)
doc.ez_save("C:/tst/new.pdf")
doc.close()

---

I want the text start at x0=100, but I runned the code above ,It gives me

[{'size': 7.980000019073486, 'flags': 4, 'font': 'SimSun', 'color': 16711680, 'ascender': 0.859375, 'descender': -0.140625, 'text': '分切尺寸：200*300mm', 'origin': (101.0, 164.1820068359375), 'bbox': (101.0, 157.32418823242188, 176.8100128173828, 165.30419921875)}]

The text just starts at the 101 !

And I changed html tag: text = """<div class="cs">分切尺寸：200*300mm</div>""" to text = """<p class="cs">分切尺寸：200*300mm</p>""",

It gives me another position,and the fontsize=6.359182357788086.....:

[{'size': 6.359182357788086, 'flags': 4, 'font': 'SimSun', 'color': 16711680, 'ascender': 0.859375, 'descender': -0.140625, 'text': '分切尺寸：200*300mm', 'origin': (100.79689025878906, 168.0823974609375), 'bbox': (100.79689025878906, 162.6174774169922, 161.20912170410156, 168.97665405273438)}]

new.pdf
old.pdf

[JorjMcKie]

The text just starts at the 101 !

The method makes an internal default decision about the margin: "body {margin:1px;}" + css, where css is your parameter in the method.
So overwrite with desired margin value.

[LittleMoDel]

I set body {margin:0px;} and solved.
Thank you so much for your help. I fully appreciate it.

[JorjMcKie]

Very pleased you like this feature!
It is worthwhile to look at all the examples in the documentation. The method can be used for East-Asian scripts like Devanagari, Tamil, Bengali, etc. In all cases, fonts are automatically pulled in as required and the advanced text shaping library HarfBuzz takes care of using the correct ligatures.

Another application is inserting images with transparency - even when the image itself is not transparent.
This is something causing a large effort normally.