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Thread: DO NOT REPLY New: - text-rendering 'auto' output less legible that other options for
DO NOT REPLY New: - text-rendering 'auto' output less legible that other options for
country flaguser name
United States		 2007-04-13 12:04:39 
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http://issues.apache.org/bugzilla/show_bug.cgi?id=42116

           Summary: text-rendering 'auto' output less
legible that other
                    options for some fonts
           Product: Batik
           Version: 1.7
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: SVG Rasterizer
        AssignedTo: batik-devxmlgraphics.apache.org
        ReportedBy: daniel.a.joycegmail.com


According to:
http://www.w3.org/TR/SVG/painting.html#TextRendering
Property

"auto" is supposed to balance speed, precision,
and legibility, while favoring
legibility. For some fonts though, this isn't true. I've
included a sample chunk
of an affected svg document. For this font, at certain
window sizes in squiggle,
the descenders on the 1 are missing when 'auto' is used,
rendering it as a
single hovering 'dot'. 

This problem is not present when text-rendering is set to
optimizeSpeed,
optimizeLegibility, or geometricPrecision.

				<text enable-background="new    "
text-rendering="auto" transform="matrix(1
0 0 1 64.6787 71.8477)">
<tspan fill="#525759" x="0"
font-size="15" y="0"
font-family="'Chalet-bondNineteenSeventy'">1 0
1 0 1 0 1 0 1 0 1</tspan>
</text>
				<text enable-background="new    "
text-rendering="optimizeSpeed" 
transform="matrix(1 0 0 1 64.6787 100.8477)">
<tspan fill="#525759" x="0"
font-size="15" y="0"
font-family="'Chalet-bondNineteenSeventy'">1 0
1 0 1 0 1 0 1 0 1</tspan>
</text>
				<text enable-background="new    "
text-rendering="optimizeLegibility"
transform="matrix(1 0 0 1 64.6787 130.8477)">
<tspan fill="#525759" x="0"
font-size="15" y="0"
font-family="'Chalet-bondNineteenSeventy'">1 0
1 0 1 0 1 0 1 0 1</tspan>
</text>
				<text enable-background="new    "
text-rendering="geometricPrecision"
transform="matrix(1 0 0 1 64.6787 160.8477)">
<tspan fill="#525759" x="0"
font-size="15" y="0"
font-family="'Chalet-bondNineteenSeventy'">1 0
1 0 1 0 1 0 1 0 1</tspan>
</text>

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DO NOT REPLY - text-rendering 'auto' output less legible that other options for some
country flaguser name
United States		 2007-04-13 12:08:55 
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG·
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=42
116>.
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http://issues.apache.org/bugzilla/show_bug.cgi?id=42116





------- Additional Comments From daniel.a.joycegmail.com
 2007-04-13 10:08 -------
Created an attachment (id=19952)
 --> (http://issues.apache.org/bugzilla/attac
hment.cgi?id=19952&action=view)
render of svg file showing problems with
text-rendering="auto"

This file contains the 4 sample text lines included in the
bug report,
consisting of repeating 1's and 0's. From top to bottom, the
text-rendering
options are "auto", "optimizeSpeed",
"optimizeLegibility" and
"geometricPrecision".

As the squiggle window is resized, parts of the 1's
disappear and reappear when
'auto' is set. The bug is not seen for the other
text-rendering property
settings.

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DO NOT REPLY - text-rendering 'auto' output less legible that other options for some
country flaguser name
United States		 2007-04-13 12:10:12 
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG·
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116>.
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http://issues.apache.org/bugzilla/show_bug.cgi?id=42116





------- Additional Comments From daniel.a.joycegmail.com
 2007-04-13 10:10 -------
I can't attach the font itself because it is not a freeware
or pd font file.

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