425826 - Test case for bug 425662 renders at different scale for HTTP vs FILE URLs on some PCs but not others

Status: RESOLVED INVALID

(Core :: SVG, defect)

Description

[Duncan Loveday]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008032805 Minefield/3.0pre
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008032805 Minefield/3.0pre

On some PCs if you take download the test case from bug 425662 and open them as a file:// URL the image is sometimes rendered at a different scale when compared to opening the test case directly.

Reproducible: Sometimes

Steps to Reproduce:
1. Download and save the SVG attachment https://bugzilla.mozilla.org/attachment.cgi?id=312319 as, say, "test.svg"
2. Download and save the HTML attachment https://bugzilla.mozilla.org/attachment.cgi?id=312374 as, say, "test.html" in the same folder.
3. Edit the file "test.html" to remove the value "https://bugzilla.mozilla.org/attachment.cgi?id=312319" from the EMBED tag and replace it with "test.svg"
4. Use File->Open File to open "test.html".
5. Compare the image you see with that seen when loading the HTML attachment https://bugzilla.mozilla.org/attachment.cgi?id=312374 directly.
Actual Results:  
On one of my two PCs the images in 4 and 5 look the same but on the other the image in step 5 is rendered at a larger scale than that in step 4.

Expected Results:  
I would have expected the two images to always be the same.

Comment 1

[Robert Longson [:longsonr]]

You do understand that the zoom state saves on a per domain basis don't you? If you zoom on a PC it remembers the zoom state and next time you visit that site on that PC you will see things zoomed in. I suspect you have done that on some of your PCs.

Comment 2

[Duncan Loveday]

Robert - no, I didn't know zoom state was saved. That could explain what I see.

Comment 3

[Duncan Loveday]

In fact I'm sure of it. By zooming in one of the URLs it is rendered at a different scale from then on.

One other think I don't understand is why when I zoom the attachment https://bugzilla.mozilla.org/attachment.cgi?id=312374 it scales up by a massive amount until I reload the page but there'll be a reason for that too I'm sure.

Comment 4

[Robert Longson [:longsonr]]

(In reply to comment #3)
> One other think I don't understand is why when I zoom the attachment
> https://bugzilla.mozilla.org/attachment.cgi?id=312374 it scales up by a massive
> amount until I reload the page but there'll be a reason for that too I'm sure.
> 

I suspect that is a bug. Is it connected to the dynamic assignment of a viewBox?

Comment 5

[Duncan Loveday]

Filed bug 425954 on the big jump in scaling