436125 - event handling does not work on large SVG Elements

Status: RESOLVED WORKSFORME

(Core :: SVG, defect)

Description

[Armin Müller]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9) Gecko/2008051206 Firefox/3.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9) Gecko/2008051206 Firefox/3.0

we change the position and size of an SVG element to the following size
x=-12800000% y=-12800000% width=25600000% height=25600000%
After this the event handling does not work any longer.

Reproducible: Always

Steps to Reproduce:
1. start index.svg
2. click plus-button
3. click on the map

Actual Results:  
=>nothing happens

Expected Results:  
Remove this lines from syslib.js
//THIS MAKES PROBLEMS
setAttributes(document.getElementById('panAndZoomRect'),{'x':'-12800000%','y':'-12800000%','width':'25600000%','height':'25600000%'});
click on the plus button
click on the map
=> you see an alert, coming from the mousedown event

Comment 1

[Armin Müller]

Attachment: example to demonstrate the bug

Comment 2

[Ria Klaassen (not reading all bugmail)]

Regression window:
http://bonsai.mozilla.org/cvsquery.cgi?module=PhoenixTinderbox&date=explicit&mindate=1175644560&maxdate=1175649179

Comment 3

[Robert Longson [:longsonr]]

I suspect that this is not really an SVG problem directly but is due to limitations of the cairo rendering engine that gecko uses.

cairo's co-ordinate system range in firefox 3 is -2^24 to 2^24

I suspect this is a WONTFIX. The range has been extended from the firefox 2 which is 2^16

Comment 4

[Robert Longson [:longsonr]]

A more minimal example would be useful to confirm it is a 2^24 range issue.

Comment 5

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Yep, could be 2^24, though it could also be an issue with in_fill() or extents().. a minimal testcase would certainly help.

Comment 6

[Armin Müller]

(In reply to comment #3)
> I suspect that this is not really an SVG problem directly but is due to
> limitations of the cairo rendering engine that gecko uses.
> cairo's co-ordinate system range in firefox 3 is -2^24 to 2^24
> I suspect this is a WONTFIX. The range has been extended from the firefox 2
> which is 2^16

Robert,

you are right. if have changed position and size from
x=-12800000% y=-12800000% width=25600000% height=25600000%
to
x=-7500000% y=-7500000% width=15000000% height=15000000%

Now it works. Thank you