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canvas.parsesvg: Be more tolerant instead of failing.

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- Remove 'px' suffix from numbers to be used as valid numbers.
 - Automatically update the rotation center if it the according
   values are present.
 - Fix text only partially set if containing xml entities.
This commit is contained in:
Thomas Geymayer 2013-07-15 22:29:19 +02:00
parent c58a155a2b
commit ce4d7964f6
1 changed files with 22 additions and 6 deletions
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28
Nasal/canvas/svg.nas
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@ -27,6 +27,15 @@ var parsesvg = func(group, path, options = nil)
return "LiberationFonts/LiberationMono-Bold.ttf";
};
# Helper to get number without unit (eg. px)
var num = func(css_num)
{
if( css_num.ends_with("px") )
return substr(css_num, 0, size(css_num) - 2);
return css_num;
}
var level = 0;
var skip = 0;
var stack = [group];
@ -275,8 +284,7 @@ var parsesvg = func(group, path, options = nil)
var font_size = style["font-size"];
if( font_size != nil )
# eg. font-size: 123px
stack[-1].setDouble("character-size", substr(font_size, 0, size(font_size) - 2));
stack[-1].setDouble("character-size", num(font_size));
}
# ----------------------------------------------------------------------------
@ -401,7 +409,7 @@ var parsesvg = func(group, path, options = nil)
stack[-1].set('fill', style['fill']);
var w = style['stroke-width'];
stack[-1].setStrokeLineWidth( w != nil ? w : 1 );
stack[-1].setStrokeLineWidth( w != nil ? num(w) : 1 );
stack[-1].set('stroke', style['stroke'] or "none");
var linecap = style['stroke-linecap'];
@ -442,11 +450,14 @@ var parsesvg = func(group, path, options = nil)
var cx = attr['inkscape:transform-center-x'];
if( cx != nil and cx != 0 )
stack[-1].setDouble("center-offset-x", cx);
stack[-1].setDouble("center-offset-x", num(cx));
var cy = attr['inkscape:transform-center-y'];
if( cy != nil and cy != 0 )
stack[-1].setDouble("center-offset-y", -cy);
stack[-1].setDouble("center-offset-y", -num(cy));
if( cx != nil or cy != nil )
stack[-1].updateCenter();
};
# XML parsers element close callback
@ -554,7 +565,12 @@ var parsesvg = func(group, path, options = nil)
# If no tspan is found add a dummy one
append(tspans, {});
tspans[-1]["text"] = data;
# If text contains xml entities it gets split at each entity. So let's
# glue it back into a single text...
if( tspans[-1]["text"] == nil )
tspans[-1]["text"] = data;
else
tspans[-1]["text"] ~= data;
}
};