1710019 - cases of PDF scaling breaking for zoom of 30% or lower in firefox pdf viewer

Status: RESOLVED FIXED

(Firefox :: PDF Viewer, defect)

Description

[brngus]

Attachment: svg_scaling_error.pdf

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0

Steps to reproduce:

Open a pdf file containing certain SVG objects with firefox build in pdf viewer.
Set zoom to 30% or lower.

Actual results:

Some SVG objects are being displayed much bigger than expected.

Expected results:

SVG scaling should not break.
In Firefox 83 scaling for those symbols worked fine.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::PDF Viewer' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Marcela (Please NI request to Brindusa Tot)]

I was able to reproduce it on latest Nightly version 90.0a1 (2021-05-11) (64-bit), Beta 89.0b10, and Firefox Release 88.01 on Windows 10.
I'll change flags accordingly. The severity suggested is S3.

Comment 3

[Marcela (Please NI request to Brindusa Tot)]

Attachment: SVG-Scaling.png

I'll attach the evidence

Comment 4

[Robert Longson [:longsonr]]

If Firefox 83 worked please can you establish a regression range using https://mozilla.github.io/mozregression/

Comment 5

[brngus]

(In reply to Robert Longson [:longsonr] from comment #4)

If Firefox 83 worked please can you establish a regression range using https://mozilla.github.io/mozregression/

https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=20591042c89c646ef3e7c0978c021b99bc22d186&tochange=ed176106eb89ce8d5dea426b2f6b72d1d81be6bb

Comment 6

[brngus]

When I created svg_scaling_error.pdf, my intention was to help you solve the bug, but apparently what it did instead was to make you think this problem is not relevant. But it actually is, you can find it on websites.

Another example: http://www.caverender.de/CaveRenderPro/images/M13_Iron%20Deep.pdf

Comment 7

[Marco Castelluccio [:marco]]

Are you still able to reproduce this bug now that bug 1757825 landed?

Comment 8

[Brindusa Tot, Desktop QA]

I was able to reproduce this bug on Release 97.0.1 against Windows 10 with both examples: svg_scaling_error.pdf and
http://www.caverender.de/CaveRenderPro/images/M13_Iron%20Deep.pdf.

The issue is not reproducible on latest Nightly 99.0a1 (build id 20220304094153).

Comment 9

[Calixte Denizet (:calixte)]

It has been fixed thanks to: https://github.com/mozilla/pdf.js/commit/46369e4aa530f3db1fb1c4e738617f062d3e7756