Why do markers, patterns, and unicode characters display incorrectly in a svg data uri in google chrome?

问题

I am using google chrome version 24.0.1312.57 on Mac OS X 10.6.8.

In Safari 5.1.7 the svg image looks like this:

In Chrome it looks like this:

Notice the markers are gone from the paths and the path that has a pattern now has a fill of black and the unicode character has an A behind it. This only happens if the image is a data uri in the address bar in google chrome. If I open the svg image up as a file in chrome it displays correctly.

I've tried taking the line endings away and putting it in base64, but it doesn't seem to fix anything.

Is this a bug with chrome or am I missing something?

Here's the source svg:

<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="svg_elem">
<title id="doctitle">URI Test</title>
<defs id="thedefs">
<pattern id="ptrn" overflow="visible" patternUnits="userSpaceOnUse"
         x="0" y="0" width="10" height="10"
         viewBox="0 0 10 10" >
    <line fill="none" stroke="#000000" stroke-width="0.5" x1="-5" y1="-5" x2="15" y2="15"/>
</pattern>

<marker id="mtriangle" viewBox="0 0 10 10" refX="0" refY="5" markerUnits="strokeWidth" markerWidth="4" markerHeight="3" orient="auto">
  <path d="M 0 0 L 10 5 L 0 10 z" fill="#FFF" stroke="#000" stroke-width="1"/>
</marker>

<marker id="mcircle" viewBox="-2 -2 12 12" refX="5" refY="5" markerUnits="strokeWidth" markerWidth="4" markerHeight="3" orient="auto">
  <circle cx="5" cy="5" r="5" fill="#FFF" stroke="#000" stroke-width="1"/>
</marker>  

</defs>

<g> 

<path 
fill="#F00"
stroke="#000000" 
stroke-width="3" 
marker-start="url(#mtriangle)"
marker-mid="url(#mcircle)"
d="M10,10l0,60l60,0z"/>      

<path 
fill="url(#ptrn)" 
stroke="#000" 
stroke-width="3" 
marker-start="url(#mtriangle)"
marker-mid="url(#mcircle)"
d="M110,110l0,70l70,0z"/>      

<text 
fill="#000" 
x='100'
y='100'
font-size="14pt" 
font-family="serif" 
text-anchor="middle"
space="preserve">N 34° 45' 30" E 300 ft</text>

</g>
</svg>  

Here's the data uri.

data:image/svg+xml;base64,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

回答1:

Not sure about markers and patterns, but as for the character set, Chrome must be using a different default encoding for data:URIs. If you add charset=UTF-8; in the beginning, e.g.:

data:image/svg+xml;charset=UTF-8;base64,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

...it should work properly!

Here's a fiddle.

EDIT Upon further inspection (re: markers and patterns), it seems like this is a bug in Chrome. It looks like Chrome incorrectly interprets (completely ignores?) url(#hash) attribute values in SVG data:URIs when embedded as <object> (and possibly in other cases?).

Here's another fiddle with extensive testing of this issue.

Everything works correctly for me in Safari 6.0.2, Firefox 18.0.2 (Mac), Firefox 10.0.1 (Win), Opera 12.12 (Mac), and IE 9. <object> (as well as <embed> and <iframe>) embeds are not displaying correctly in Chrome 24.0.1312.57 (Mac/Win) or 26.0.1405.0 canary (Mac), whereas <img> embeds are working fine. Pasting either the URI-encoded or base64-encoded data:URIs into the address bar is also not working.

来源：https://stackoverflow.com/questions/14741810/why-do-markers-patterns-and-unicode-characters-display-incorrectly-in-a-svg-da