[Webkit-unassigned] [Bug 12698] New: SVG text needs a special per-character layout mode.

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=12698

           Summary: SVG text needs a special per-character layout mode.
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zimmermann at kde.org


To be able to implement mutliple x/y, dx/dy, rotate values properly, SVG text
needs a special layout mode. vertical text & textPath can be built upon that -
once it's done.

Attaching patch, which implements a new hot per-character layout mode.
x/y, dx/dy lists seem to work fine in all combinations.
rotate lists work fine, too.

text seletion is _DISABLED_ for per character layout mode and needs discussion
- not yet sure how to properly implement that. vertical text is not yet "hooked
in" - but you can switch a variable "isVerticalText" in the code to "true" to
actually see vertical text :-)

Another problem is the width/height calculation of our InlineText/Flow boxes:
- rotate changes the size of the boxes - not taken into account yet.
- y lists may enlarge the size of the boxes - not taken into account yet.
 (only x lists are handled so far in the patch - see SVGInlineFlowBox)

These size calculations are easy to fix - just don't have time atm.
Please comment.


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