Re: [svg-developers] FF3.0a2 works great

2007-02-13 Thread T Rowley
On 2/13/07 8:32 AM, André M. Winter - Carto.net wrote:
 i was just testing a map interface with FF2 and was disappointed while 
 unloading a map and reloading another form the local filesystem. it took 
 around 15sec. now FF3 (feb. 8th) does it in around 1sec and this over 
 the web. this is faster than IE6/ASV3. mouse interactions work smooth, 
 pages (also html) load at an amazing speed :-)
 
 give it a try with your own files, here you go: 
 http://www.mozilla.org/projects/firefox/3.0a2/releasenotes/#download

Some information about the SVG capabilities in 3.0a2 are listed in the 
following URL.  Note that a number of SVG applications will have 
problems due to regressions caused by some tree-wide gecko changes.  The 
good news is that we now have a handle on these issues and have patches 
in hand to fix them.

One thing I forgot to mention in the following is that we now have 
incremental loading of XML, so you'll see progressive rendering of SVG 
files as they load.

http://weblogs.mozillazine.org/tor/archives/2007/02/gran_paradiso_alpha_2_and_svg.html

-tor


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Re: [svg-developers] FF3.0a2 works great

2007-02-13 Thread T Rowley
On 2/13/07 2:24 PM, TheMountainScene wrote:
 In a FF test I've created, a mouseover of Canada 364 Kb, it has improved 
 from 6 seconds to 2 seconds. 2 Seconds is still much too slow compared 
 to the Adobe viewer, but it is an improvement. I submitted this as a bug 
 some time ago. For my purposes, it still falls short, and given the 
 snail's pace anything svg is moving, I see flash in my future. I keep my 
 fingers crossed, but my optimism wanes with each passing day.

Assuming you're talking about the Canada map in bug 319990, the version 
you have online right now has a JS error.  Correcting that, removing the 
alert, and moving in/out right near the border (which defeats our 
early-reject hit detection), the major hotspots in the profile all 
appear inside the cairo 2D graphics library:

57.20% checking if a point is inside the path
   99.7% of this time is spent tesselating the path to trapezoids

14.83% painting paths
   99% of this time is spent tesselating the path to trapezoids

14.51% getting screen path extent
   99.9% of this time is spend tesselating the path to trapezoids
   The reason this appears in the profile is because the style change
   information Gecko gives us is a general things changed rather than
   detail which would let us realize that only the fill changed and the
   extent didn't need to be recalculated.

It seems that if cairo improved their point-in-path functionality using 
one of the techniques that doesn't need a whole trapezoid list, things 
would be a fair bit faster.

Changing the style system to give detailed information is a larger scope 
item, though maybe something gecko would want to do as it could help 
other sorts of content.

It does seem as though this map is a bit of a torture case for cairo's 
tesselator - I've passed on the URL to the cairo developers.

-tor


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Re: [svg-developers] FF3.0a2 works great

2007-02-13 Thread T Rowley
On 2/13/07 3:37 PM, T Rowley wrote:
 Changing the style system to give detailed information is a larger scope 
 item, though maybe something gecko would want to do as it could help 
 other sorts of content.

Correction - gecko does have a mechanism for splitting style information 
into repaint/reflow, SVG just isn't using it yet.  The fun of 
depreciated APIs floating around...

-tor


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Re: [svg-developers] FF3.0a2 works great

2007-02-13 Thread T Rowley
On 2/13/07 2:58 PM, Guy Morton wrote:
 I wish I could report the same happy news. Unfortunately,  
 GranParadiso (on MacOSX at least) fails to render *anything* for me.  
 It even seems buggy in doing normalish browser things like resizing  
 framesets (the toolbar has half disappeared under the window title in  
 my testing).
 
 Have a look at http://bct2.webtrak-lochard.com/ and see.
 
 It's not generating anything in the error logs that gives any  
 indication of what it might be taking exception to either.

This appears to be one of the SVG applications having a regression of 
the onload behavior.  It is fixed in my local tree which contains the 
patch from bug 370210.

-tor


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Re: [svg-developers] FF3.0a2 works great

2007-02-13 Thread T Rowley
On 2/13/07 3:41 PM, Guy Morton wrote:
 Aha...well that's the problem for me. I resized the window and it  
 appeared. Good to know you know what is causing it.
 
 And I'll add my Wow to Andre's...FF used to use 70% of my CPU  
 playing this file. Now it's using about 7%.

In your case, this is probably largely due to the background image 
you're using and changes in how we implement svg:image internally.

 There are some screen  
 redrawing issues though still, which you'll see if you look at the  
 link I sent (the planes are leaving translucent colour over the map).

I don't see redraw problems on linux here.  If you could send me a 
screenshot I can look into the problem a bit.

-tor


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Re: [svg-developers] Re: WPF/E Goes Beta Community preview available for download

2006-12-06 Thread T Rowley
On 12/6/06 10:36 AM, Jeff Schiller wrote:
 I think I've asked before, but couldn't find my post when searching: 
 What would be the challenge in taking the Mozilla codebase and turning
 that into an ActiveX control for IE that handles XHTML and SVG
 content?  IE6 and 7 both don't support either MIME types, so this
 would allow XHTML with SVG inline as well as SVG linked by reference
 (HTML:object).  Get that deployed far enough and you could actually
 see XHTML and SVG start to make inroads into the web.  Granted, it's
 still a plugin, but at least it couldn't be killed by a corporation's
 whim.

Mozilla as an ActiveX control already exists:

   http://www.iol.ie/~locka/mozilla/control.htm

You'd still be stuck with the click-to-active behavior of plugins in IE.

-tor


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Re: [svg-developers] FF2 text-anchor bug?

2006-11-15 Thread T Rowley
On 11/14/2006 8:38 PM, Doug Schepers wrote:
 Not to speak for Tim, but I think he was asking for an minimal test 
 case, not a full application where the error was occurring.

Right, as I mentioned in my email to to Guy, I've done some preliminary 
investigation, but haven't gotten around to reducing your application 
into a reasonable testcase for debugging purposes yet.  If you have 
anything smaller that exhibits the same bug, it'll greatly accelerate 
the process of fixing this.

Thanks.

-tor


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Re: [svg-developers] FF2 text-anchor bug?

2006-11-08 Thread T Rowley
On 11/8/06 6:11 PM, Guy Morton wrote:
 It seems in FF2 on Windows that all my text elements that use text- 
 anchor=middle are now positioned incorrectly.
 
 FF2 on Mac doesn't show the problem (though it has other text bugs)
 
 Anyone know anything about this? Anyone at Mozilla working on it? It  
 is a MAJOR pain. In fact, FF2 on windows only seems to have gotten  
 worse for SVG, not better, which is disappointing.

Do you have a testcase?  FF2 on win32 displays the w3c svg testcases 
using anchor=middle (text-align-01-b, text-align-03-b, and 
text-align-04-b) fine here.

-tor


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Re: [svg-developers] Re: SVG performance

2006-11-06 Thread T Rowley
On 11/6/06 1:58 PM, brucerindahl wrote:
 --- In svg-developers@yahoogroups.com, T Rowley [EMAIL PROTECTED] wrote:
 are certainly known areas where things will be slow.  Also keep in mind 
 that I haven't seriously used the SVG code shipped in Firefox 1.5 and 
 2.0 for over a year now.  The trunk code I work with has different 
 performance characteristics.
 
 In general does this mean that bugs should only be reported against
 Minefield?  The performance on windows is definitely better in
 Minefield by the way - thanks.

We'll look at bugs for both, but we're much more conservative about what 
will go into the 2.0.x releases.  Security and crash fixes are easy to 
get in, but others will involve benefit/risk judgment.

-tor


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Re: [svg-developers] Re: SVG performance

2006-11-04 Thread T Rowley
On 11/4/06 4:30 AM, Andreas Neumann wrote:
 and I am pretty sure that it has to do with the X server configuration. The 
 main developer, 
 Tim Rowley develops on Linux and he says that he doesn't experience these 
 performance 
 problems.

I don't think I've ever said I don't see performance problems - there 
are certainly known areas where things will be slow.  Also keep in mind 
that I haven't seriously used the SVG code shipped in Firefox 1.5 and 
2.0 for over a year now.  The trunk code I work with has different 
performance characteristics.

 I, you and several others seem to have these issues, so I am pretty sure 
 there are some 
 hidden XServer settings that we should be able to set. Its a problem for me 
 as well. 
 FirefoxSVG on Linux is currently unusable for me, but Opera9 and Apache Batik 
 work well 
 under Linux. Firefox on Windows works at reasonable speed, yes it could be 
 faster, but its 
 usable for the majority of applications.

There aren't hidden XServer settings, unless your distribution has for 
some reason set up your server with no hardware acceleration at all, 
which you'd notice in all platforms.

Cairo can accelerate some operations using the RENDER extension, but 
unfortunately most deployed servers have a buggy versions of this 
extension, which cairo autodetects and then turns off those accelerations.

If you are seeing performance problems, it's something we want to know 
about and investigate.  Please file bugs with links to the problem SVG 
or attached testcases.  Vague mentions of performance problems aren't 
useful, as we need to be able to reproduce what you're seeing.  Bugs are 
also preferable to mail and newsgroup postings as they're queryable and 
can't be forgotten.

   https://bugzilla.mozilla.org/enter_bug.cgi?product=Corecomponent=SVG

 As an example, I am pretty sure that your thousands or 10.000s of polylines 
 could easily 
 be reduced to a much smaller number of path elements. A single path element 
 can 
 represents several polylines, by using several M commands and greatly 
 improve the 
 performance. Generally, what slows down the SVG renderers is the large number 
 of DOM 
 elements, not the complexity of the graphics itself. So I would really 
 recommend that you 
 try reducing the number of elements.

Actually, for Firefox 1.5 and 2.0, large paths can be a serious 
performance problem as the cairo tesselator has poor scaling behavior.

-tor



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Re: [svg-developers] Re: tspan in mozilla

2006-09-26 Thread T Rowley
On 9/25/06 11:39 AM, T Rowley wrote:
 On 9/25/06 10:12 AM, revelonshift wrote:
 Yeah, it is workaround, but I could it use, perhaps.
 Hope FFX2 will be working already as expected...
 
 Err, oops.  While the fix is trivial and has been on the trunk since 
 February, it was missed when merging low risk changes to the branch 
 because it was included in a much larger patch.
 
 I've filed a bug/patch for the branch, but as RC1 is currently in QA the 
 chances of getting approval to include this in FF2 are slim.
 
https://bugzilla.mozilla.org/show_bug.cgi?id=354147

Patch is in - will make FF2 RC2 and final.

-tor


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Re: [svg-developers] Re: Performance tips

2006-09-21 Thread T Rowley
On 9/21/06 7:29 AM, revelonshift wrote:
 No, I'm not using styles at all, knowing, that they are not so fast as
 direct properties. Some other ideas, if Mozilla specific, the better...

There will be no performance difference between style and property 
attributes in Mozilla SVG, as they are both mapped internally to the 
same core style system.

Major items to keep an eye out for performance in Firefox 1.5/2.0 SVG 
are group opacity (fill-opacity is fine), clipPaths, and complex paths 
(the current cairo tesselator has poor scalability).  All of these 
should improve in Firefox 3.0.

Like Erik I'd be interested in a copy of the application to take a look 
at what might be causing performance problems.

-tor


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Re: [svg-developers] Re: Performance tips

2006-09-21 Thread T Rowley
On 9/21/06 10:18 AM, T Rowley wrote:
 Major items to keep an eye out for performance in Firefox 1.5/2.0 SVG 
 are group opacity (fill-opacity is fine), clipPaths, and complex paths 
 (the current cairo tesselator has poor scalability).  All of these 
 should improve in Firefox 3.0.

A little more information on the clipPath note - trivial clipPaths 
consisting of a single graphics element will be a fast path, but 
nontrivial ones fall onto a slower general codepath.

-tor


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Re: [svg-developers] Re: Performance tips

2006-09-21 Thread T Rowley
On 9/21/06 10:42 AM, Phi Tran wrote:
 Lately I am very careful in what I will say specially after ADOBE's
 announcement. For not to be misunderstood as a cheap-shot to promote my
 SVG/Zip . . . .
 
 Let me make my point on this thread. I only trying to help to save some CPU
 instructions here and there; Base on my background and study of the codes.
 I do not have any intention to undermine any SVG players.
 
 Please take my apology if any one you feel offended

None taken, and I wasn't referring to your mention of clipPath, but 
rather trying to clarify my own vague note to avoid it in MozSVG for 
performance reasons.

-tor


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Re: [svg-developers] Re: Performance tips

2006-09-21 Thread T Rowley
On 9/21/06 11:27 AM, Jim Ley wrote:
 The biggest Mozilla speed improvement in scripting will be to not use 
 getElementById() but to cache every single reference in a seperate variable 
 of your own.  currently mozilla re-looks up every node in the DOM for XML 
 documents, and it's very, very slow.

I have a patch which fixes this behavior - if you have 
testcases/applications which you believe suffer from getElementId() 
performance I'd be quite interested in obtaining them for testing.

-tor


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Re: [svg-developers] Re: 'Native' SVG support in Opera and FF

2006-09-12 Thread T Rowley
On 9/12/06 9:51 AM, Tim Hesse wrote:
 Another huge issue for our firm is that FF (at least, haven't tested 
 opera) doesn't support compressed .svgz which ASV did.
 
 Our clients won't be happy if we start sending 5+mb docs over the 
 wire to them, when with ASV they would compress down to under a meg.  

Mozilla/Firefox's SVG will happily deal with svgz files if the server is 
providing them up with the appropriate content-encoding header.  See 
this link for server configuration tips:

   http://wiki.svg.org/index.php?title=Server_Configuration

Note that local (file:) svgz files will not load, due to this bug:

   https://bugzilla.mozilla.org/show_bug.cgi?id=52282


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Re: [svg-developers] Re: Announcement: Adobe to Discontinue Adobe SVG Viewer

2006-09-07 Thread T Rowley
On 9/7/06 1:19 PM, Jeff Schiller wrote:
 So where are the open source, cross-platform SVG 1.1 viewers ?  What 
 about taking the Mozilla base and developing a browser plugin from 
 that for only SVG support?  What about candidates like AmanithVG and 
 Renesis for a SVG 1.2 viewer?  Let's get a list of all the candidate 
 open-source projects and contribute so that they flourish before Jan 
 2008.

The SVG code in mozilla is tied closely with the rest of the layout 
engine, so you need to take pretty much the whole Gecko engine if you 
wanted to do something like this.

There is already code in the mozilla tree that turns it into an ActiveX 
Control which could serve as a starting point.

   http://www.iol.ie/~locka/mozilla/control.htm


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Re: [svg-developers] Announcement: Adobe to Discontinue Adobe SVG Viewer

2006-09-06 Thread T Rowley
On 9/6/06 10:55 AM, Sean wrote:
 My concern with FF, is how slow it is with SVG over 300k. Hopefully 
 within 1.5 years the issue will be solved. I tested it with the FF 2 
 beta 2, and mouseover events are still laboriously slow. I posted it as 
 a bug back in January, but nothing.

Have a bug # to reference?

Firefox 2's SVG support is almost the same as 1.5, with the addition of 
textPath and some low-risk, high-gain bug and specification fixes 
backported from the trunk.  Firefox 3 (which can be previewed by looking 
at a trunk nightly) is where development is happening.


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Re: [svg-developers] Re: arc and markers

2006-07-13 Thread T Rowley
On 7/13/06 9:22 AM, Andreas Neumann wrote:
 the reason is that FF does not yet implement .getPointAtLength()  - at least 
 not in version 1.5.

Will be in Firefox 3:

   https://bugzilla.mozilla.org/show_bug.cgi?id=344378

-tor


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Re: [svg-developers] Re: Firefox on MacOSX, or is it Intel-related? / progress with latest Cairo?

2006-07-04 Thread T Rowley
On 7/4/06 8:27 AM, meikelneu wrote:
 jophof007 [EMAIL PROTECTED] wrote:
 
 Yes firefox on the Mac (Intel or PPC) is on SVG 
 much worse than under PC. 
 
 yes, this is unfortunately true and it's mainly due to poor Cairo (the
 graphic engine for SVG behind Firefox) development on MacOSX. Has
 anyone more insight in what the latest Cairo release is up to on OSX
 and if it will make it into Firefox2?
 http://cairographics.org/news/cairo-1.2.0  (July 1st, 2006)

At this point we don't plan on updating to cairo-1.2 in Firefox 2, as 
there's a serious regression in cairo's atsui font backend when dealing 
with transformed text.

-tor


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Re: [svg-developers] Firefox on MacOSX, or is it Intel-related?

2006-07-04 Thread T Rowley
On 7/3/06 9:13 AM, Guy Morton wrote:
 I've just got myself a macbook pro running mac os x 10.7, and i  
 downloaded firefox (the current version) and SVG is terrible in it.  
 the bitmaps are all in a weird colour space and the text is outlined  
 weirdly and so on. Is this just a problem with FF on a mac?

Firefox 1.5.0.5 and Firefox 2 will contain the fixes for the byte 
ordering problems that cause SVG to look different between OS-X PPC and 
Intel.

-tor


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Re: [svg-developers] Re: Firefox 1.5 with SVG now officially released

2005-12-01 Thread T Rowley
On 12/1/05 3:07 PM, Richard Pearman wrote:
 Firefox doesn't correctly display any of the SVG's on my site, including 
 ones I'm pretty sure have the Kosha namespace declarations etc.  Also, as 
 far as I can tell, the server uses the correct mime type for SVGZ.  Can 
 anyone please tell me what the problem is?

Your server isn't sending the Content-Encoding header for svgz files:

http://jwatt.org/svg/authoring/#server-configuration

-tor


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[svg-developers] Re: [update] Mozilla SVG report from XTech 2005

2005-05-27 Thread T Rowley
Ronan Oger ronan at roasp.com writes:
 3/ MOZ SVG will support scripting

Mozilla/Firefox SVG already supports scripting.  The problem you might
be seeing is the script mimetype:

  http://www.mozilla.org/projects/svg/faq.html#script

 4/ MOZ SVG will support XForms.

While Mozilla/Firefox SVG should work with XForms, XForms is not currently
planned to be shipped with Firefox 1.1, it will be a seperate download.

 5/ MOZ SVG will not support SMIL at first, but Mozilla intend to support the
full SVG 1.0 (1.1?)
 specification as soon as possible. Actually, I hear there is currently *some*
SMIL support, and more
 coming, but it is not supported yet.

There is currently no support for declarative animation in the codebase,
but discussion and development has begun.  Extremely doubtful that it
will make it in the Firefox 1.1 timeframe.

 7/ The Moz team is concentrating on matching the rendering that Opera8
provides. I heard it mentioned that
 Opera may be working on implementing a full-SVG version of their browser,
since they currently support
 SVGT only.

Matching Opera is not the goal, the specification (1.1) is.

-tor




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