Thanks for that, I'll give it a go.. (c: On Tue, 2002-11-12 at 00:33, Thomas E Deweese wrote: > >>>>> "AP" == Andrew Pietsch <[EMAIL PROTECTED]> writes: > > AP> I've now decided I need this.. )c: > > AP> I'm presuming the final implementation is still someway off, so is > AP> there any change of adding it (since you feel its easy) or > AP> pointing me in the right direction so I can implement it? > > I'll gadly point you in the right direction ;) > > All of text wrapping is done as a post-processing step in text > layout. That post-processing step has two parts, first it figures out > what needs to be on each line, then it positions all the glyphs. > > All this work is done in the two methods: > > // Does the line break determination > batik.gvt.text.GlyphLayout.textWrapTextChunk(....) > > // Does the glyph positioning > batik.gvt.text.GlyphLayout.layoutChunk(....) > > As textWrapTextChunk does it's work it adde LineInfo object to a > list, one for each line of text. > > What I would suggest is adding a vertical-align offset member to > the LineInfo class. This should be a Point2D.float. Use the same > Point2D.float for all lines in a single flowRect (the list of > flowRects is accessed from the 'flowRectsIter'). When we hit the end > of a flowRect (or of text), you can get the vertical size from 'dy' > (depending on the case you will need to figure in the current line's > size - search for 'bottomEdge') & the flow rect size from cRect.height > from this you can calculate the 'left over' space and put half of it > in the vertical-align Point2D's y value. > > Then in the layoutChunk method just add the vertical-align offset > in when calculating the correct lineLoc for the current line. > > --- > > You will also need to pass this information to the text-wrap stuff > from the source SVG. This is mostly done in the > batik.extension.svg.SVGFlowTextElementBridge class. You might look at > how the margin's are done (search for makeMarginInfo) or how the > FlowRegions are handleded (search for getRegions). > > --- > > Hope this helps, and good luck (if you get into it and have > specific questions feel free to post). > > AP> Thanks Andrew > > AP> On Wed, 2002-10-23 at 22:34, Thomas E Deweese wrote: > >> >>>>> "AP" == Andrew Pietsch <[EMAIL PROTECTED]> writes: > >> > AP> Hi,I was wondering if the css vertical-align property is supported > AP> (or planned) when using the flow text extension (i've tried a few > AP> times and browsed the code so I'm guessing no). > >> No, and eventually :) > >> > >> This is on hold pending decisions in the SVG WG. The > >> implementation was done to get experience to feed back to the SVG > >> WG. The WG is tring to sort out the details of how text wrapping > >> will work - what features to support, what algs should be used, > >> etc. > >> > AP> I'm using the cvs version (week or so old). I have a single flow > AP> region and it would be nice (though not critical) to vertically > AP> centre the text. > >> This wouldn't be hard to implement for this case (or actually even > >> for multiple flow regions), but I haven't bothered since everything > >> is about to change anyway. > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] For > >> additional commands, e-mail: [EMAIL PROTECTED] > >> > > > > AP> --------------------------------------------------------------------- > AP> To unsubscribe, e-mail: [EMAIL PROTECTED] For > AP> additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] >
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