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new SPRepr class names
by MenTaLguY 20 Feb '05

20 Feb '05

For reference: SPRepr -> Inkscape::XML::Node SPReprDoc -> Inkscape::XML::Document SPReprAttr -> Inkscape::XML::AttributeRecord SPReprAction -> Inkscape::XML::Event SPReprEventVector -> Inkscape::XML::NodeEventVector -mental

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SPRepr renamed! commits may resume!
by MenTaLguY 20 Feb '05

20 Feb '05

Okay, comitted the most evil of the changes (check out the 80-some line ChangeLog entry XD). I'm not really done yet, but the remaining stuff is much less likely to cause merge conflicts with anything anyone else is working on. -mental

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SPRepr renaming! hold off on commits!
by MenTaLguY 19 Feb '05

19 Feb '05

I'm getting ready to rename the SPRepr interface classes into the Inkscape::XML namespace. As I'll probably have to end up touching most of the files in the codebase, it might be a good idea to hold off comitting anything until I'm done. Yes, I can resolve update conflicts before I commit, but they are more likely to get resolved correctly if they happen on your end, since you will understand your particular changes better, and you will individually have fewer to handle than I would. -mental

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New text layout engine design RFC
by Richard Hughes 19 Feb '05

19 Feb '05

See the attached header file for the first draft of what I think the interface for the new text layout engine should look like. The intended audience is developers, there's nothing to see here for people who don't enjoy reading source code. Comments are encouraged on design, comprehensibility, features, style and smackdowns. A few things to talk about, in no particular order: 1) Do we disapprove of public member variables, even where there's no disadvantages to using them? 2) The coding style guide doesn't mention the how the names of enumerations should be formatted. 3) I implement parse_svg_length_list() because the old flow_src did. Should this really belong closer to the XML layer? 4) Likewise the xml:space attribute. The difficulty with moving this is that you could cause roundtripping problems. Can we even do roundtripping? 5) Lots of private members are missing still, because I don't know what they're going to be yet. 6) The appearance of this document doesn't mean I've decided whether to wrap the existing code, switch over the users, then write my own innards, or to do it all in one big (destructive) commit. The latter is quite a lot less work, but the former will likely be broken for shorter intervals (although maybe more of them). 7..n) There are more things to discuss in the attachment, under the heading "Comments", near the top. That's it, I think. I'll remember something else as soon as I click 'send', of course. Richard.

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.svgz reading
by unknown＠example.com 19 Feb '05

19 Feb '05

I just changed the gzip input stream to remove some of it's limitations. Please give it a shake-down and see if it holds up. (It works on assorted-tiling.svgz now)

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Fwd: Re: [cairo] cairo anti aliasing
by unknown＠example.com 19 Feb '05

19 Feb '05

----- Forwarded message from Samuel Abels <newsgroups@...722...> ----- Date: Sat, 19 Feb 2005 01:19:37 +0100 From: Samuel Abels <newsgroups@...722...> Reply-To: Samuel Abels <newsgroups@...722...> Subject: Re: [cairo] cairo anti aliasing To: Tim Janik <timj@...723...> On Sat, 2005-02-19 at 00:38 +0100, Tim Janik wrote: > i am seriously considering to use cairo as a rendering backend in an > anti-aliased canvas i'm currently working on. In case you are using C++ - might we consider combining efforts? http://cms.debain.org/ -Samuel -- ------------------------------------------------------ | Samuel Abels | http://www.debain.org | | spam ad debain dod org | knipknap ad jabber dod org | ------------------------------------------------------ _______________________________________________ cairo mailing list cairo@...278... http://lists.freedesktop.org/mailman/listinfo/cairo ----- End forwarded message -----

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Adding CxxTest
by unknown＠example.com 18 Feb '05

18 Feb '05

I just did an initial checkin to add CxxTest. http://cxxtest.sourceforge.net Once you do an update, just run "make check" from the top level and you should get src/libnr/testrunnr built and executed along with all the other tests. Or to get just that one, change to inkscape/src and then run "make libnr/testrunnr" to build it. It runs CxxTest to create the needed .cpp from *-test.h files, then builds it.

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Fwd: Re: COMMENT: Flow Text
by unknown＠example.com 18 Feb '05

18 Feb '05

----- Forwarded message from Jon Ferraiolo <jon.ferraiolo@...720...> ----- Date: Fri, 18 Feb 2005 09:51:22 -0800 From: Jon Ferraiolo <jon.ferraiolo@...720...> Reply-To: Jon Ferraiolo <jon.ferraiolo@...720...> Subject: Re: COMMENT: Flow Text To: Thomas DeWeese <Thomas.DeWeese@...721...>, www-svg@...157... Thomas, Thanks for the great comments! The SVG Working Group has given me the assignment of responding to one of our comments below. You said: >4.14.2 The progression-align property > > Doesn't it make a _lot_ more sense to have this property >apply to the flow regions? What does it mean to have a center >aligned flowPara bracketed by two un-aligned flowPara elements? > > Also I think a description of how this is applied to content >is in order. I can think of several "reasonable" interpretations >which given 'odd' flow geometry could result in widely variable >results. The SVG WG believes the SVG 1.2 LC specification incorrectly defined a 'progression-align' property when instead it is better to reuse the 'display-align' property from XSL-FO (defined within http://www.w3.org/TR/xsl/slice7.html#area-alignment) , which delivers exactly what is needed. The next public draft of SVG will include the 'display-align' property instead. We agree that the 'display-align' property should apply to regions and not to flow content elements. The next public draft of SVG will say that 'display-align' applies to the text container object and not to elements that are part of the text flow such as <flowPara>. In terms of the last paragraph about odd flow geometries and widely variable results, I believe this issue only applies to non-rectangular regions. At the moment, the SVG WG is first addressing SVG Tiny 1.2 requirements (which only supports rectangular text regions) and is adopting the general policy proposed by others that flowing text layout must allow UA-specific layout algorithms to be deployed so that UA's are not prevented from delivering the best possible results. Although we haven't resolved your last paragraph completely yet, there is a possibility that we will allow layout variability in the general case (per the feedback of others), which might lead us to conclude that it is sufficient to simply provide layout guidelines for flowing text in arbitrary shapes (preserving the great technical work by the incredibly bright people who documented the existing algorithms - do you remember who contributed to that work?) but not *mandate* every possible detail for how layout is performed. Jon At 07:45 AM 11/8/2004, Thomas DeWeese wrote: >Hi all, > > These are concrete problems/suggestions on the flowText elements as >currently specified (or underspecified). > >4.2 The flowRegion element > > "The children of a flowRegion element are inserted into the > rendering tree before the text is drawn and have the same > rendering behavior as if they were children of a g element." > > This is new and I don't think it's a particularly good idea. If >people want the flowRegions to be rendered then there is the 'use' >element. Given the above how are filters handled? > > "A flowRegion element has basic shapes and path elements as > children" > > I'm not a real Schema expert but it appears that it allows >just about anything as a child (g, use, text, shapes). This is >without comment on how these are combined to form the flow regions. >Given that the desire here is almost identical to the clipPath element >(namely construct a set of geometry) I would strongly urge the WG >to adopt the wording and methods used in clipPath (which restricts >it's children pretty heavily). > > Given that the WG is likely not to take my advice ;) You need to >at least specify what having a 'g' means. Is all the geometry >concatenated as one flow region? Are implementors expected to 'union' >the fill regions of the children of the 'g'? Use if it is allowed >to reference arbitrary content (which it isn't for clipPath) has >similar issues. > > Also with text is all the text considered a single very complex >flow region or is each individual letter a flow region? What about >letters with multiple 'disjoint' pieces ('i',';','%')? > > All these comments apply equally to the flowRegionExclude section. > >4.5 The flowPara element > > It needs to be clearly defined if 'block' here means CSS block. >Also there are references to margin's elsewhere do they apply here? > > flowPara doesn't appear to allow flowLine as a child (in fact >no one seems to allow flow line as a child). > >4.7 flowRegionBreak element > > It should be specified what the behavior is in the case that a >flowRegionBreak element is empty or there are multiple together (as >it is for flowLine). Also flowSpan doesn't allow flowRegionBreak >element's as children, but flowLine and flowDiv do, is this >intentional? > > Is flowRegionBreak more a flowPara or a flowSpan or something >else (just a 'marker'?). > >4.13 Determining Strip Location > > How is line-height determined? > > What is the strip that is intersected with the geometry? > > If it is the line-height it is worth noting that this may be >smaller than the content height meaning that text content may >run into the flow geometry. If the content height (or line box) >is used then this doubles the number of intersections needed to >handle strip calculations (there are also other inefficiencies this >introduces). > >4.14.2 The progression-align property > > Doesn't it make a _lot_ more sense to have this property >apply to the flow regions? What does it mean to have a center >aligned flowPara bracketed by two un-aligned flowPara elements? > > Also I think a description of how this is applied to content >is in order. I can think of several "reasonable" interpretations >which given 'odd' flow geometry could result in widely variable >results. > >4.14.3 Overflow > > What is the processing model for this? > Is this event generated before/after DOM mutation events? > _Must_ it be issued for every mutation event that changes >the state or may an implementation 'compress' overflow events >as long as no rendering occurs between them? > > I would really like to lobby for allowing compression, otherwise >the layout must be performed on essentially _every_ modification of >the content tree. I think UA's should be allowed to defer layout >until just prior to rendering at which point if a flow has change >overflow state events must be issued (which may change the flow and >hence the overflow state, which may lead to new overflow events before >the rendering takes place, repeat as needed). > > This avoids the need to layout the text 12 times because 12 >properties were changed in the flowText tree (even when none of >the 12 actually causes an overflow event). > > For async renderers (that don't normally hold up rendering until >'script' completes) they would only be required to dispatch the event >before 'unsuspendRedraw/All' and 'forceRedraw' complete. > >4.15 Example > > Aside from the already noted 'well formedness' problem ("</flow>" >instead of "</flowRoot>"). The namespace declaration is wrong >(you want "xmlns=" not "xmlns:svg="). Also in the first example >the flowRegion appears to be a parallelogram instead of the >desired trapezoid (I think the last L should be L200,50 - although >even that goes 'outside' the stroked trapezoid on the bottom). >You might be better off using margins here and referencing the >stroked trapezoid. > >Other Properties: > > There should really be a consideration of other properties >implementations need to be mindful of from CSS. A few that >come to mind: 'margin', 'margin-*', 'text-indent'?, 'white-space'?, >'line-height'. Without this it is unclear what an implementation >is expected to support. > > ----- End forwarded message -----

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Saving as pov
by Lucas Vieites 18 Feb '05

18 Feb '05

Hi, I've been trying to render the exported pov files from simple svg images but I keep getting errors. I'm using povray 3.6 to render the attached pov file, generated from the attached svg file. I'm also attaching the output ;-) Thanks for your help, -- Lucas Vieites Fariña Dept. Desarrollo <lucas@...212...> Asix Informática <http://www.asixinformatica.com/> Tel/Fax: +34 986 54 26 98

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resource leaks on Windows
by bulia byak 18 Feb '05

18 Feb '05

Today we have found and patched a number of GDI resource leaks. This will likely fix the bug where using text tool eventually caused Inkscape to freeze with endless "SaveDC failed" and "RestoreDC failed" messages streaming to the console: http://sourceforge.net/tracker/index.php?func=detail&aid=1070816&group_id=9… Everyone who has ever experienced it (and everyone else using Windows), please test a CVS build dated later than today and report your results.

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