Thai font not supported anymore

[Louis-de-Bontin]

What did you do?

I am trying to write Thai text on an image.

What did you expect to happen?

Using the following code works perfectly fine in v8.1.2 (see image):

What actually happened?

But in v9.0.1, 9.1.1 and 10.2.0, some characters are overlapping (see image):

ImageDraw.Draw(image).text(
    (x, y),
    "หนึ่งร้อยสี่สิบบาทถ้วน",
    font="DroidSansThai.ttf",
    fill=color,
    allign="right",
    anchor="rs",
)

What are your OS, Python and Pillow versions?

• OS: debian:bullseye-slim
• Python: 3.9.2 and 3.10.12
• Pillow: 8.1.2 works fine but 9.0.1, 9.1.1 and 10.2.0 are impacted

Note

I tried many fonts, the problem remains whatever the font. For the record, here are the ones I tested:

• K2D-Regular.ttf
• NotoSerifThai-VariableFont_wdth,wght.ttf
• DroidSansThai.ttf
• LomaThin.ttf

[radarhere]

Looking at the images that you've attached, I think you prefer BASIC layout rather than RAQM, and I expect that the change occurred in 8.2.0.

When you are opening your font, if you attach layout_engine=ImageFont.Layout.BASIC like so,

font = ImageFont.truetype("./DroidSansThai-Regular.ttf", 124, layout_engine=ImageFont.Layout.BASIC)

you should get the result you prefer.

[nulano]

I agree with @radarhere about which change caused this. but I think you might have the opposite problem, i.e. that you were using RAQM layout before and use BASIC layout now.

If @radarhere's suggestion does not fix your issue, please answer the following:

How did you install Pillow?
What output do you get for python -m PIL with each version (please paste the beginning of the output up to the line starting with XCB support, once for Pillow 8.1.2 and once for a recent version to compare)?

[Louis-de-Bontin]

To answer @radarhere , when adding layout_engine=ImageFont.Layout.BASIC, the output is the following (v9.0.1):

Traceback (most recent call last):
  File "/home/clovis1er/Documents/code/newlogic/png_test/test.py", line 47, in <module>
    font = ImageFont.truetype("DroidSansThai.ttf", 60, layout_engine=ImageFont.Layout.BASIC)
AttributeError: module 'PIL.ImageFont' has no attribute 'Layout'

To answer @nulano ,
This issue has been noticed by myself and my coworker, on both our local machines, as well as on odoo.sh. I can't say how Pillow has been installed for my coworker, or on odoo.sh, but for myself, I simply ran pip3 install Pillow==<version> in a venv virtual environment.

Here is the output of python -m PIL:
--- XCB (X protocol) support ok

[radarhere]

To answer @radarhere , when adding layout_engine=ImageFont.Layout.BASIC, the output is the following (v9.0.1):

ImageFont.Layout.BASIC was only added in 10.0.0. To be less version specific, could you try layout_engine=0 instead?

[nulano]

Here is the output of python -m PIL:
--- XCB (X protocol) support ok

I mean the first ~22 lines (i.e. from the first output line to the XCB line). In particular, the FREETYPE2 and RAQM lines are relevant here, but there could be something else helpful in there as well.

[Louis-de-Bontin]

@radarhere layout_engine=0 seems to be working, here is my output with v9.0.1:

@nulano Even though the problem is solved now, here is the output of python -m PIL, for the record:

--------------------------------------------------------------------
Pillow 9.0.1
Python 3.10.11 (main, Apr  5 2023, 00:00:00) [GCC 12.2.1 20221121 (Red Hat 12.2.1-4)]
--------------------------------------------------------------------
Python modules loaded from /home/clovis1er/Documents/code/newlogic/png_test/env/lib64/python3.10/site-packages/PIL
Binary modules loaded from /home/clovis1er/Documents/code/newlogic/png_test/env/lib64/python3.10/site-packages/PIL
--------------------------------------------------------------------
--- PIL CORE support ok, compiled for 9.0.1
--- TKINTER support ok, loaded 8.6
--- FREETYPE2 support ok, loaded 2.11.1
--- LITTLECMS2 support ok, loaded 2.13
--- WEBP support ok, loaded 1.2.2
--- WEBP Transparency support ok
--- WEBPMUX support ok
--- WEBP Animation support ok
--- JPEG support ok, compiled for libjpeg-turbo 2.1.2
--- OPENJPEG (JPEG2000) support ok, loaded 2.4.0
--- ZLIB (PNG/ZIP) support ok, loaded 1.2.11
--- LIBTIFF support ok, loaded 4.3.0
--- RAQM (Bidirectional Text) support ok, loaded 0.7.2, fribidi 1.0.11, harfbuzz 3.2.0
*** LIBIMAGEQUANT (Quantization method) support not installed
--- XCB (X protocol) support ok
--------------------------------------------------------------------

[radarhere]

the problem is solved now

Is there anything more we can do for you?

[Louis-de-Bontin]

No, thank you very much for your support @radarhere !
You can mark this issue as solved.