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Diffstat (limited to 'js/dojo/dojox/gfx/resources/svg2gfx.xsl')
| -rw-r--r-- | js/dojo/dojox/gfx/resources/svg2gfx.xsl | 1085 |
1 files changed, 1085 insertions, 0 deletions
diff --git a/js/dojo/dojox/gfx/resources/svg2gfx.xsl b/js/dojo/dojox/gfx/resources/svg2gfx.xsl new file mode 100644 index 0000000..03c25a9 --- /dev/null +++ b/js/dojo/dojox/gfx/resources/svg2gfx.xsl @@ -0,0 +1,1085 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE xsl:stylesheet [ +<!ENTITY SupportedElements "svg:a|svg:circle|svg:ellipse|svg:g|svg:image|svg:line|svg:path|svg:polygon|svg:polyline|svg:rect|svg:text|svg:textPath|svg:use"> +]> +<!-- This is a complete rewrite of the original svg2gfx.xslt used for testing. --> +<!-- +This version supports polygons, polylines, circles, ellipses, rectangles, +lines, images, text, patterns, linear gradients, radial gradients, transforms +(although gradient transforms are limited), and more in addition to the +paths, strokes, groups, and constant fills supported by the original. It +even handles little niceties like the SVG use element. All that being said, +It does not even come close to supporting all of the features found in SVG, +but should hopefully be a fairly useful subset. + +Caveats: Completely ignores many SVG features (such as named views, filters, +object bounding box in gradient transforms, etc.). Now requires properly +formed SVG (that is, SVG using the appropriate SVG namespace) which most +editors create by default these days anyhow (the old version required that +namespaces be stripped off). Can't convert to GFX constructs that cannot +be reconstructed from JSON (such as textpath or using vector fonts). +Requires EXSLT for many transforms. Handles nested styles in a simple way +that is usually right but sometimes wrong. + +Questions / comments / bug reports can be sent to Feneric (on Twitter, IRC, +GMail, etc.) or Eric (Saugus.net, ShellTown, etc.) +--> +<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" + xmlns:svg="http://www.w3.org/2000/svg" + xmlns:xlink="http://www.w3.org/1999/xlink" + xmlns:math="http://exslt.org/math" + xmlns:exsl="http://exslt.org/common" + xmlns:saxon="http://icl.com/saxon" + xmlns:xalan="http://xml.apache.org/Xalan" + extension-element-prefixes="math exsl saxon xalan"> + <xsl:output method="text" version="1.0" encoding="UTF-8"/> + <xsl:strip-space elements="*"/> + + <!-- We currently need this constant for some transformation calculations. --> + <!-- GFX enhancements could obviate it in the future. --> + <xsl:variable name="degressInRadian" select="57.295779513082322"/> + + <!-- The following templates process little bits of things that can often occur in multiple contexts --> + + <xsl:template name="kill-extra-spaces"> + <xsl:param name="string"/> + <!-- Some don't feel that SVG is verbose enough and thus add extra spaces, which when --> + <!-- untreated can look exactly like delimiters in point sets. --> + <xsl:choose> + <!-- Hopefully most cases won't have the extra spaces --> + <xsl:when test="not(contains($string,', '))"> + <xsl:value-of select="$string"/> + </xsl:when> + <xsl:otherwise> + <!-- We split at comma / space pairs and recursively chop spaces --> + <xsl:call-template name="kill-extra-spaces"> + <xsl:with-param name="string" select="substring-before($string,', ')"/> + </xsl:call-template> + <xsl:text>,</xsl:text> + <xsl:call-template name="kill-extra-spaces"> + <xsl:with-param name="string" select="substring-after($string,', ')"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="arg-processor"> + <xsl:param name="values"/> + <xsl:param name="labels"/> + <!-- Recursively chew through the arguments in a traditional CAR / CDR pattern --> + <xsl:variable name="valuesCdr" select="substring-after($values,',')"/> + <!-- We're going "backwards" here to take advantage of tail recursion --> + <xsl:choose> + <xsl:when test="not($valuesCdr)"> + <!-- handle the final argument --> + <xsl:value-of select="$labels"/> + <xsl:text>:</xsl:text> + <xsl:value-of select="$values"/> + <!-- This last trailing comma is needed in the (odd) case of multiple transforms --> + <xsl:text>,</xsl:text> + </xsl:when> + <xsl:otherwise> + <!-- handle the current argument --> + <xsl:value-of select="substring-before($labels,',')"/> + <xsl:text>:</xsl:text> + <xsl:value-of select="substring-before($values,',')"/> + <xsl:text>,</xsl:text> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$valuesCdr"/> + <xsl:with-param name="labels" select="substring-after($labels,',')"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="background-processor"> + <xsl:param name="background"/> + <xsl:choose> + <xsl:when test="starts-with($background,'url')"> + <!-- Check if we have a URL (for a gradient or pattern) --> + <xsl:variable name="arguments" select="translate(normalize-space(substring-before(substring-after($background,'('),')')),' ',',')"/> + <xsl:call-template name="url-processor"> + <xsl:with-param name="url" select="$arguments"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <!-- We probably have a solid color. --> + <xsl:call-template name="color-processor"> + <xsl:with-param name="color" select="$background"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="color-processor"> + <xsl:param name="color"/> + <xsl:choose> + <xsl:when test="starts-with($color,'rgb')"> + <!-- Check if we have an RGB triple --> + <xsl:variable name="arguments" select="normalize-space(substring-before(substring-after($color,'('),')'))"/> + <xsl:call-template name="rgb-triple-processor"> + <xsl:with-param name="triple" select="$arguments"/> + </xsl:call-template> + </xsl:when> + <xsl:when test="$color='none'"> + <!-- Check if we have a literal 'none' --> + <!-- Literal nones seem to actually map to black in practice --> + <xsl:text>"#000000",</xsl:text> + </xsl:when> + <xsl:otherwise> + <!-- This color could either be by name or value. Either way, we --> + <!-- have to ensure that there are no bogus semi-colons. --> + <xsl:text>"</xsl:text> + <xsl:value-of select="normalize-space(translate($color,';',' '))"/> + <xsl:text>",</xsl:text> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="point-processor"> + <xsl:param name="points"/> + <!-- Recursively process points in a traditional CAR / CDR pattern --> + <xsl:variable name="pointsCdr" select="normalize-space(substring-after($points,' '))"/> + <!-- We're going "backwards" here to take advantage of tail recursion --> + <xsl:choose> + <xsl:when test="not($pointsCdr)"> + <!-- handle the final argument --> + <xsl:text>{x:</xsl:text> + <xsl:value-of select="substring-before($points,',')"/> + <xsl:text>,y:</xsl:text> + <xsl:value-of select="substring-after($points,',')"/> + <xsl:text>},</xsl:text> + </xsl:when> + <xsl:otherwise> + <!-- handle the current argument --> + <xsl:variable name="pointsCar" select="substring-before($points,' ')"/> + <xsl:text>{x:</xsl:text> + <xsl:value-of select="substring-before($pointsCar,',')"/> + <xsl:text>,y:</xsl:text> + <xsl:value-of select="substring-after($pointsCar,',')"/> + <xsl:text>},</xsl:text> + <xsl:call-template name="point-processor"> + <xsl:with-param name="points" select="$pointsCdr"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="rgb-triple-processor"> + <xsl:param name="triple"/> + <!-- Note that as SVG triples cannot contain alpha values, we hardcode it to be fully opaque --> + <!-- This could theoretically be better handled by watching for fill-opacity --> + <xsl:variable name="red" select="substring-before($triple,',')"/> + <xsl:variable name="green" select="substring-before(substring-after($triple,concat($red,',')),',')"/> + <xsl:variable name="blue" select="substring-after($triple,concat($red,',',$green,','))"/> + <xsl:text>{"r":</xsl:text> + <xsl:value-of select="normalize-space($red)"/> + <xsl:text>,"g":</xsl:text> + <xsl:value-of select="normalize-space($green)"/> + <xsl:text>,"b":</xsl:text> + <xsl:value-of select="normalize-space($blue)"/> + <xsl:text>,"a":1},</xsl:text> + </xsl:template> + + <xsl:template name="styles-processor"> + <xsl:param name="styles"/> + <!-- Recursively chew through the styles in a traditional CAR / CDR pattern --> + <xsl:variable name="stylesCdr" select="substring-after($styles,';')"/> + <!-- We're going "backwards" here to take advantage of tail recursion --> + <xsl:choose> + <xsl:when test="not($stylesCdr)"> + <!-- handle the final style --> + <xsl:attribute name="{normalize-space(substring-before($styles,':'))}"> + <xsl:value-of select="normalize-space(substring-after($styles,':'))"/> + </xsl:attribute> + </xsl:when> + <xsl:otherwise> + <!-- handle the current style --> + <xsl:variable name="stylesCar" select="substring-before($styles,';')"/> + <xsl:attribute name="{normalize-space(substring-before($stylesCar,':'))}"> + <xsl:value-of select="normalize-space(substring-after($stylesCar,':'))"/> + </xsl:attribute> + <xsl:call-template name="styles-processor"> + <xsl:with-param name="styles" select="$stylesCdr"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="transform-processor"> + <xsl:param name="transforms"/> + <!-- Recursively chew through the transforms in a traditional CAR / CDR pattern --> + <xsl:variable name="transformsCdr" select="normalize-space(substring-after($transforms,')'))"/> + <xsl:variable name="arguments" select="translate(normalize-space(substring-before(substring-after($transforms,'('),')')),' ',',')"/> + <xsl:choose> + <!-- We only handle simple (i.e. nonoverlapping) chained transforms. --> + <!-- This covers most real-world cases, and exceptions are generally --> + <!-- hand-generated and can likewise be hand fixed. --> + <xsl:when test="starts-with($transforms,'matrix')"> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$arguments"/> + <xsl:with-param name="labels" select="string('xx,yx,xy,yy,dx,dy')"/> + </xsl:call-template> + </xsl:when> + <xsl:when test="starts-with($transforms,'translate')"> + <!-- If only one argument is provided, it's assumed for both --> + <xsl:choose> + <xsl:when test="contains($arguments,',')"> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$arguments"/> + <xsl:with-param name="labels" select="string('dx,dy')"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="concat($arguments,',',$arguments)"/> + <xsl:with-param name="labels" select="string('dx,dy')"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + <xsl:when test="starts-with($transforms,'scale')"> + <!-- If only one argument is provided, it's assumed for both --> + <xsl:choose> + <xsl:when test="contains($arguments,',')"> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$arguments"/> + <xsl:with-param name="labels" select="string('xx,yy')"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="concat($arguments,',',$arguments)"/> + <xsl:with-param name="labels" select="string('xx,yy')"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + <xsl:when test="starts-with($transforms,'rotate')"> + <!-- Kluge alert - we're redoing a function GFX aleady provides here because --> + <!-- GFX doesn't yet expose it to JSON input. It requires XSLT extensions, too. --> + <!-- If you don't have the extensions, comment the following out (bye bye rotate). --> + <xsl:choose> + <xsl:when test="function-available('math:sin') and function-available('math:cos')"> + <xsl:variable name="sinOfAngle" select="math:sin($arguments div $degressInRadian)"/> + <xsl:variable name="cosOfAngle" select="math:cos($arguments div $degressInRadian)"/> + <xsl:variable name="subarguments" select="concat($cosOfAngle,',',-$sinOfAngle,',',$sinOfAngle,',',$cosOfAngle)"/> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$subarguments"/> + <xsl:with-param name="labels" select="string('xx,yx,xy,yy')"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:message> + <xsl:text>exslt:sin and exslt:cos must be supported for a rotation.</xsl:text> + </xsl:message> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + <xsl:when test="starts-with($transforms,'skewX')"> + <!-- Kluge alert - we're redoing a function GFX aleady provides here because --> + <!-- GFX doesn't yet expose it to JSON input. It requires XSLT extensions, too. --> + <!-- If you don't have the extensions, comment the following out (bye bye skewX). --> + <xsl:choose> + <xsl:when test="function-available('math:tan')"> + <xsl:variable name="tanOfAngle" select="math:tan($arguments div $degressInRadian)"/> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$tanOfAngle"/> + <xsl:with-param name="labels" select="string('xy')"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:message> + <xsl:text>exslt:tan must be supported for a skewX.</xsl:text> + </xsl:message> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + <xsl:when test="starts-with($transforms,'skewY')"> + <!-- Kluge alert - we're redoing a function GFX aleady provides here because --> + <!-- GFX doesn't yet expose it to JSON input. It requires XSLT extensions, too. --> + <!-- If you don't have the extensions, comment the following out (bye bye skewY). --> + <xsl:choose> + <xsl:when test="function-available('math:tan')"> + <xsl:variable name="tanOfAngle" select="math:tan($arguments div $degressInRadian)"/> + <xsl:call-template name="arg-processor"> + <xsl:with-param name="values" select="$tanOfAngle"/> + <xsl:with-param name="labels" select="string('yx')"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:message> + <xsl:text>exslt:tan must be supported for a skewY.</xsl:text> + </xsl:message> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + </xsl:choose> + <xsl:if test="$transformsCdr"> + <!-- handle the other transforms --> + <xsl:call-template name="transform-processor"> + <xsl:with-param name="transforms" select="$transformsCdr"/> + </xsl:call-template> + </xsl:if> + </xsl:template> + + <xsl:template name="url-processor"> + <xsl:param name="url"/> + <xsl:param name="groupAttrs" select="''"/> + <!-- We can only handle local references; that's probably all we should get anyway --> + <xsl:if test="starts-with($url,'#')"> + <xsl:apply-templates select="id(substring-after($url,'#'))"> + <xsl:with-param name="groupAttrs" select="$groupAttrs"/> + </xsl:apply-templates> + </xsl:if> + </xsl:template> + + <!-- The following templates help with gradient transforms --> + + <!-- We're temporarily supporting a few SVG features that GFX does not currently support. --> + <!-- The biggest of these is gradient transforms; when GFX natively supports it all the --> + <!-- kluges made to support it here (including all the following code) should be removed. --> + + <xsl:template name="gradient-transform-helper"> + <!-- This nasty little routine helps gradient adjuster and can be --> + <!-- removed when GFX gets gradientTransform support. --> + <xsl:param name="cxa"/> + <xsl:param name="cya"/> + <xsl:param name="x1a"/> + <xsl:param name="y1a"/> + <xsl:param name="x2a"/> + <xsl:param name="y2a"/> + <xsl:param name="xx"/> + <xsl:param name="xy"/> + <xsl:param name="yx"/> + <xsl:param name="yy"/> + <xsl:param name="dx"/> + <xsl:param name="dy"/> + <xsl:choose> + <xsl:when test="local-name()='radialGradient'"> + <xsl:variable name="cx" select="$xx*$cxa+$xy*$cya+$dx"/> + <xsl:text>cx:</xsl:text> + <xsl:value-of select="$cx"/> + <xsl:text>,</xsl:text> + <xsl:variable name="cy" select="$yx*$cxa+$yy*$cya+$dy"/> + <xsl:text>cy:</xsl:text> + <xsl:value-of select="$cy"/> + <xsl:text>,</xsl:text> + <!-- The results for r here are going to just be approximate --> + <xsl:variable name="r" select="($cx+$cy) div 2"/> + <xsl:text>r:</xsl:text> + <xsl:value-of select="$r"/> + </xsl:when> + <xsl:otherwise> + <xsl:variable name="x1" select="$xx*$x1a+$xy*$y1a+$dx"/> + <xsl:text>x1:</xsl:text> + <xsl:value-of select="$x1"/> + <xsl:text>,</xsl:text> + <xsl:variable name="y1" select="$yx*$x1a+$yy*$y1a+$dy"/> + <xsl:text>y1:</xsl:text> + <xsl:value-of select="$y1"/> + <xsl:text>,</xsl:text> + <xsl:variable name="x2" select="$xx*$x2a+$xy*$y2a+$dx"/> + <xsl:text>x2:</xsl:text> + <xsl:value-of select="$x2"/> + <xsl:text>,</xsl:text> + <xsl:variable name="y2" select="$yx*$x2a+$yy*$y2a+$dy"/> + <xsl:text>y2:</xsl:text> + <xsl:value-of select="$y2"/> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template name="gradient-adjuster"> + <xsl:param name="node"/> + <!-- This code is awful and only meant to serve until GFX gets gradientTransform support. --> + <!-- Once GFX does gradientTransforms, the following should be destroyed and forgotten. --> + <!-- While this support is better than nothing, it cannot 100% reproduce the effects --> + <!-- that true gradientTransform support in GFX could provide. --> + <xsl:choose> + <xsl:when test="starts-with($node/@gradientTransform,'matrix')"> + <xsl:variable name="args" select="normalize-space(substring-before(substring-after($node/@gradientTransform,'matrix('),')'))"/> + <xsl:variable name="xx" select="substring-before($args,' ')"/> + <xsl:variable name="yx" select="substring-before(substring-after($args,' '),' ')"/> + <xsl:variable name="xy" select="substring-before(substring-after($args,concat($xx,' ',$yx,' ')),' ')"/> + <xsl:variable name="yy" select="substring-before(substring-after($args,concat($xx,' ',$yx,' ',$xy,' ')),' ')"/> + <xsl:variable name="dx" select="substring-before(substring-after($args,concat($xx,' ',$yx,' ',$xy,' ',$yy,' ')),' ')"/> + <xsl:variable name="dy" select="substring-after($args,concat($xx,' ',$yx,' ',$xy,' ',$yy,' ',$dx,' '))"/> + <xsl:call-template name="gradient-transform-helper"> + <xsl:with-param name="cxa" select="$node/@cx"/> + <xsl:with-param name="cya" select="$node/@cy"/> + <xsl:with-param name="x1a" select="$node/@x1"/> + <xsl:with-param name="y1a" select="$node/@y1"/> + <xsl:with-param name="x2a" select="$node/@x2"/> + <xsl:with-param name="y2a" select="$node/@y2"/> + <xsl:with-param name="xx" select="$xx"/> + <xsl:with-param name="yx" select="$yx"/> + <xsl:with-param name="xy" select="$xy"/> + <xsl:with-param name="yy" select="$yy"/> + <xsl:with-param name="dx" select="$dx"/> + <xsl:with-param name="dy" select="$dy"/> + </xsl:call-template> + </xsl:when> + <xsl:when test="starts-with($node/@gradientTransform,'translate')"> + <xsl:variable name="args" select="normalize-space(substring-before(substring-after($node/@gradientTransform,'translate('),')'))"/> + <!-- If only one argument is provided, it's assumed for both --> + <xsl:choose> + <xsl:when test="contains($args,',')"> + <xsl:call-template name="gradient-transform-helper"> + <xsl:with-param name="cxa" select="$node/@cx"/> + <xsl:with-param name="cya" select="$node/@cy"/> + <xsl:with-param name="x1a" select="$node/@x1"/> + <xsl:with-param name="y1a" select="$node/@y1"/> + <xsl:with-param name="x2a" select="$node/@x2"/> + <xsl:with-param name="y2a" select="$node/@y2"/> + <xsl:with-param name="xx" select="1"/> + <xsl:with-param name="yx" select="0"/> + <xsl:with-param name="xy" select="1"/> + <xsl:with-param name="yy" select="0"/> + <xsl:with-param name="dx" select="substring-before($args,' ')"/> + <xsl:with-param name="dy" select="substring-after($args,' ')"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:call-template name="gradient-transform-helper"> + <xsl:with-param name="cxa" select="$node/@cx"/> + <xsl:with-param name="cya" select="$node/@cy"/> + <xsl:with-param name="x1a" select="$node/@x1"/> + <xsl:with-param name="y1a" select="$node/@y1"/> + <xsl:with-param name="x2a" select="$node/@x2"/> + <xsl:with-param name="y2a" select="$node/@y2"/> + <xsl:with-param name="xx" select="1"/> + <xsl:with-param name="yx" select="0"/> + <xsl:with-param name="xy" select="1"/> + <xsl:with-param name="yy" select="0"/> + <xsl:with-param name="dx" select="$args"/> + <xsl:with-param name="dy" select="$args"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + <xsl:when test="starts-with($node/@gradientTransform,'scale')"> + <xsl:variable name="args" select="normalize-space(substring-before(substring-after($node/@gradientTransform,'scale('),')'))"/> + <!-- If only one argument is provided, it's assumed for both --> + <xsl:choose> + <xsl:when test="contains($args,',')"> + <xsl:call-template name="gradient-transform-helper"> + <xsl:with-param name="cxa" select="$node/@cx"/> + <xsl:with-param name="cya" select="$node/@cy"/> + <xsl:with-param name="x1a" select="$node/@x1"/> + <xsl:with-param name="y1a" select="$node/@y1"/> + <xsl:with-param name="x2a" select="$node/@x2"/> + <xsl:with-param name="y2a" select="$node/@y2"/> + <xsl:with-param name="xx" select="substring-before($args,' ')"/> + <xsl:with-param name="yx" select="0"/> + <xsl:with-param name="xy" select="substring-after($args,' ')"/> + <xsl:with-param name="yy" select="0"/> + <xsl:with-param name="dx" select="0"/> + <xsl:with-param name="dy" select="0"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:call-template name="gradient-transform-helper"> + <xsl:with-param name="cxa" select="$node/@cx"/> + <xsl:with-param name="cya" select="$node/@cy"/> + <xsl:with-param name="x1a" select="$node/@x1"/> + <xsl:with-param name="y1a" select="$node/@y1"/> + <xsl:with-param name="x2a" select="$node/@x2"/> + <xsl:with-param name="y2a" select="$node/@y2"/> + <xsl:with-param name="xx" select="$args"/> + <xsl:with-param name="yx" select="0"/> + <xsl:with-param name="xy" select="$args"/> + <xsl:with-param name="yy" select="0"/> + <xsl:with-param name="dx" select="0"/> + <xsl:with-param name="dy" select="0"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + </xsl:when> + <xsl:otherwise> <!-- Otherwise it's got to be a rotation --> + <xsl:variable name="args" select="normalize-space(substring-before(substring-after($node/@gradientTransform,'rotate('),')'))"/> + <xsl:choose> + <xsl:when test="function-available('math:sin') and function-available('math:cos')"> + <xsl:variable name="sinOfAngle" select="math:sin($args div $degressInRadian)"/> + <xsl:variable name="cosOfAngle" select="math:cos($args div $degressInRadian)"/> + <xsl:call-template name="gradient-transform-helper"> + <xsl:with-param name="cxa" select="$node/@cx"/> + <xsl:with-param name="cya" select="$node/@cy"/> + <xsl:with-param name="x1a" select="$node/@x1"/> + <xsl:with-param name="y1a" select="$node/@y1"/> + <xsl:with-param name="x2a" select="$node/@x2"/> + <xsl:with-param name="y2a" select="$node/@y2"/> + <xsl:with-param name="xx" select="$cosOfAngle"/> + <xsl:with-param name="yx" select="-$sinOfAngle"/> + <xsl:with-param name="xy" select="$sinOfAngle"/> + <xsl:with-param name="yy" select="$cosOfAngle"/> + <xsl:with-param name="dy" select="0"/> + <xsl:with-param name="dy" select="0"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:message> + <xsl:text>exslt:sin and exslt:cos must be supported for a gradient rotation.</xsl:text> + </xsl:message> + </xsl:otherwise> + </xsl:choose> + </xsl:otherwise> + </xsl:choose> + <xsl:text>,</xsl:text> + </xsl:template> + + <!-- The following templates handle related batches of attributes --> + + <xsl:template name="font"> + <xsl:param name="node"/> + <!-- Only include if we have at least some font properties defined --> + <xsl:if test="$node/@font-style or $node/@font-variant or $node/@font-weight or $node/@font-size or $node/@font-family"> + <xsl:text>font:{ type:"font",</xsl:text> + <xsl:if test="$node/@font-style"> + <xsl:text>style:"</xsl:text> + <xsl:value-of select="$node/@font-style"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:if test="$node/@font-variant"> + <xsl:text>variant:"</xsl:text> + <xsl:value-of select="$node/@font-variant"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:if test="$node/@font-weight"> + <xsl:text>weight:"</xsl:text> + <xsl:value-of select="$node/@font-weight"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:if test="$node/@font-size"> + <xsl:text>size:"</xsl:text> + <xsl:value-of select="$node/@font-size"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:if test="$node/@font-family"> + <xsl:text>family:"</xsl:text> + <xsl:value-of select="$node/@font-family"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:text>},</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template name="stroke"> + <xsl:param name="node"/> + <!-- Only include if we have at least some stroke properties defined --> + <xsl:if test="$node/@stroke or $node/@stroke-width or $node/@stroke-linecap or $node/@stroke-linejoin"> + <xsl:text>stroke:{</xsl:text> + <!-- We don't currently handle stroke-dasharray or stroke-dashoffset --> + <!-- Note that while we'll pass stroke background info, GFX won't yet use it. --> + <xsl:if test="$node/@stroke"> + <xsl:text>color:</xsl:text> + <xsl:call-template name="background-processor"> + <xsl:with-param name="background" select="$node/@stroke"/> + </xsl:call-template> + </xsl:if> + <xsl:if test="$node/@stroke-width"> + <xsl:text>width:"</xsl:text> + <xsl:value-of select="$node/@stroke-width"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:if test="$node/@stroke-linecap"> + <xsl:text>cap:"</xsl:text> + <xsl:value-of select="$node/@stroke-linecap"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:if test="$node/@stroke-linejoin"> + <xsl:text>join:"</xsl:text> + <xsl:value-of select="$node/@stroke-linejoin"/> + <xsl:text>",</xsl:text> + </xsl:if> + <xsl:choose> + <!-- This is really cheesy but better than nothing. --> + <!-- We probably ought to match a few specific cases when we can. %FIX% --> + <xsl:when test="$node/@stroke-dasharray"> + <xsl:text>style:"Dash",</xsl:text> + </xsl:when> + <xsl:otherwise> + <xsl:text>style:"Solid",</xsl:text> + </xsl:otherwise> + </xsl:choose> + <xsl:text>},</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template name="common-attributes"> + <xsl:param name="node"/> + <!-- Pretty much every shape has to handle this same batch of attributes. --> + <xsl:apply-templates select="$node/@style"/> + <!-- Note that we make no effort to guard against overlapping styles. --> + <xsl:apply-templates select="$node/@fill"/> + <xsl:call-template name="stroke"> + <xsl:with-param name="node" select="$node"/> + </xsl:call-template> + <xsl:apply-templates select="$node/@transform"/> + <!-- Fonts are actually illegal in most shapes, but including them here doesn't --> + <!-- really slow things down much and does clean up code a bit for the shapes --> + <!-- that do allow them. --> + <xsl:call-template name="font"> + <xsl:with-param name="node" select="$node"/> + </xsl:call-template> + <!-- Ditto for stop-colors. --> + <xsl:apply-templates select="$node/@stop-color"/> + </xsl:template> + + <!-- SVG Attribute Handling --> + + <xsl:template match="@id"> + <xsl:text>name:"</xsl:text> + <xsl:apply-templates/> + <xsl:text>",</xsl:text> + </xsl:template> + + <xsl:template match="@x|@y|@x1|@x2|@y1|@y2|@cx|@cy|@r|@rx|@ry|@fx|@fy|@width|@height|@offset"> + <!-- Generic attribute followed by comma --> + <xsl:value-of select="local-name()"/> + <xsl:text>:</xsl:text> + <xsl:value-of select="."/> + <xsl:text>,</xsl:text> + </xsl:template> + + <xsl:template match="@d"> + <!-- Used only by path objects; often has tons of extra whitespace --> + <xsl:text>path:"</xsl:text> + <xsl:value-of select="normalize-space(.)"/> + <xsl:text>",</xsl:text> + </xsl:template> + + <xsl:template match="@fill"> + <!-- Used by most shapes and can have a URL, a solid color, or "none" --> + <xsl:if test=". != 'none'"> + <xsl:text>fill:</xsl:text> + <xsl:call-template name="background-processor"> + <xsl:with-param name="background" select="."/> + </xsl:call-template> + </xsl:if> + </xsl:template> + + <xsl:template match="@stop-color"> + <xsl:call-template name="color-processor"> + <xsl:with-param name="color" select="."/> + </xsl:call-template> + </xsl:template> + + <xsl:template match="@style"> + <!-- A style property is really a bunch of other properties crammed together. --> + <!-- We therefore make a dummy element and process it as normal. --> + <xsl:variable name="dummy"> + <dummy> + <xsl:call-template name="styles-processor"> + <xsl:with-param name="styles" select="."/> + </xsl:call-template> + </dummy> + </xsl:variable> + <xsl:choose> + <!-- Using a dummy element requires node-set capability. Straight XSLT 1.0 --> + <!-- lacks this, but pretty much every XSLT processor offers it as an extension. --> + <xsl:when test="function-available('exsl:node-set')"> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="exsl:node-set($dummy)/dummy"/> + </xsl:call-template> + </xsl:when> + <xsl:when test="function-available('saxon:node-set')"> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="saxon:node-set($dummy)"/> + </xsl:call-template> + </xsl:when> + <xsl:when test="function-available('xalan:nodeSet')"> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="xalan:nodeSet($dummy)"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:message> + <xsl:text>exslt:node-set is required for processing the style attribute.</xsl:text> + </xsl:message> + </xsl:otherwise> + </xsl:choose> + </xsl:template> + + <xsl:template match="@transform|@gradientTransform"> + <!-- Several transform types are supported --> + <xsl:text>transform:{</xsl:text> + <xsl:call-template name="transform-processor"> + <xsl:with-param name="transforms" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <!-- SVG Element Handling --> + + <xsl:template match="svg:a"> + <xsl:param name="groupAttrs" select="''"/> + <!-- Anchors are actually meaningless to us, but their contents should usually be processed. --> + <xsl:variable name="newGroupAttrs"> + <xsl:value-of select="$groupAttrs"/> + <xsl:apply-templates select="@style"/> + <!-- Note that we make no effort to guard against overlapping styles; we just order --> + <!-- them to be consistent. This naive approach will usually, but not always, work. --> + <xsl:apply-templates select="@fill"/> + <xsl:call-template name="stroke"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + </xsl:variable> + <xsl:apply-templates select="&SupportedElements;"> + <xsl:with-param name="groupAttrs" select="$newGroupAttrs"/> + </xsl:apply-templates> + </xsl:template> + + <xsl:template match="svg:circle"> + <xsl:param name="groupAttrs" select="''"/> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"circle",</xsl:text> + <xsl:apply-templates select="@cx|@cy|@r"/> + <xsl:text>},</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:ellipse"> + <xsl:param name="groupAttrs" select="''"/> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"ellipse",</xsl:text> + <xsl:apply-templates select="@cx|@cy|@rx|@ry"/> + <xsl:text>}</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:g"> + <xsl:param name="groupAttrs" select="''"/> + <!-- The basic grouping type can contain shapes, other groups, and have a transform --> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>children:[</xsl:text> + <!-- Note that GFX does not yet support fills etc. on a group, even though SVG does. --> + <!-- It's a planned enhancement though, so when GFX gets the ability to handle these, --> + <!-- remove the following ten lines and stop propagating groupAttrs. --> + <xsl:variable name="newGroupAttrs"> + <xsl:value-of select="$groupAttrs"/> + <xsl:apply-templates select="@style"/> + <!-- Note that we make no effort to guard against overlapping styles; we just order --> + <!-- them to be consistent. This naive approach will usually, but not always, work. --> + <xsl:apply-templates select="@fill"/> + <xsl:call-template name="stroke"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + </xsl:variable> + <xsl:apply-templates select="&SupportedElements;"> + <xsl:with-param name="groupAttrs" select="$newGroupAttrs"/> + </xsl:apply-templates> + <xsl:text>]</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + <!-- When GFX gets group fills etc., remove the following line and uncomment the ones below. --> + <xsl:apply-templates select="@transform"/> + <!--<xsl:call-template name="common-attributes">--> + <!-- <xsl:with-param name="node" select="."/>--> + <!--</xsl:call-template>--> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:image"> + <xsl:param name="groupAttrs" select="''"/> + <!-- Note that images must be GIF, JPEG, or PNG. --> + <xsl:if test="not(parent::pattern)"> + <!-- When being used as a background pattern we don't want type info. --> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"image",</xsl:text> + </xsl:if> + <xsl:apply-templates select="@x|@y|@width|@height"/> + <xsl:text>src:"</xsl:text> + <xsl:value-of select="@xlink:href"/> + <xsl:text>",</xsl:text> + <xsl:if test="not(parent::pattern)"> + <xsl:text>},</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>},</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:line"> + <xsl:param name="groupAttrs" select="''"/> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"line",</xsl:text> + <xsl:apply-templates select="@x1|@y1|@x2|@y2"/> + <xsl:text>},</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:linearGradient"> + <xsl:text>{type:"linear",</xsl:text> + <!-- Kluge alert - GFX doesn't handle gradientTransforms. We can help in --> + <!-- the common case of matrix transforms in user space. Other cases we ignore. --> + <!-- Even for this one case the results aren't anywhere near as good as real support in GFX. --> + <xsl:choose> + <!-- Kluge alert - this code is only meant to serve until GFX gets gradientTransform support. --> + <!-- Once GFX does gradientTransforms, only the straight apply-templates should be kept. --> + <xsl:when test="starts-with(@gradientTransform,'matrix') and @gradientUnits='userSpaceOnUse'"> + <xsl:call-template name="gradient-adjuster"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:apply-templates select="@x1|@x2|@y1|@y2"/> + </xsl:otherwise> + </xsl:choose> + <xsl:text>colors:[</xsl:text> + <xsl:apply-templates select="svg:stop"/> + <!-- Unfortunately GFX doesn't do gradientTransforms. --> + <!-- Uncommenting the following would support it here. --> + <!-- <xsl:apply-templates select="@x1|@x2|@y1|@y2"/> --> + <!-- <xsl:apply-templates select="@gradientTransform"/> --> + <xsl:text>]}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:path"> + <xsl:param name="groupAttrs" select="''"/> + <xsl:if test="not(parent::textpath)"> + <!-- When being used within a textpath we don't want type info. --> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"path",</xsl:text> + </xsl:if> + <xsl:apply-templates select="@d"/> + <xsl:if test="not(parent::textpath)"> + <xsl:text>},</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>},</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:pattern"> + <!-- GFX only seems to handle image pattern type fills, so that's all we do --> + <xsl:text>{type:"pattern",</xsl:text> + <xsl:apply-templates select="@width|@height|@xlink:href"/> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:polygon|svg:polyline"> + <xsl:param name="groupAttrs" select="''"/> + <!-- Polygons are mostly treated as polylines --> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"polyline",points:[</xsl:text> + <!-- We just have to ensure that endpoints match for a polygon; it's assumed in SVG --> + <xsl:variable name="seminormalizedPoints" select="normalize-space(@points)"/> + <xsl:variable name="normalizedPoints"> + <xsl:call-template name="kill-extra-spaces"> + <xsl:with-param name="string" select="$seminormalizedPoints"/> + </xsl:call-template> + </xsl:variable> + <xsl:variable name="firstPoint" select="substring-before($normalizedPoints,' ')"/> + <xsl:choose> + <xsl:when test="contains(local-name(),'polygon') and + $firstPoint!=substring($normalizedPoints,string-length($normalizedPoints)-string-length($firstPoint)+1)"> + <xsl:call-template name="point-processor"> + <xsl:with-param name="points" select="concat($normalizedPoints,' ',$firstPoint)"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:call-template name="point-processor"> + <xsl:with-param name="points" select="$normalizedPoints"/> + </xsl:call-template> + </xsl:otherwise> + </xsl:choose> + <xsl:text>]},</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:radialGradient"> + <xsl:text>{type:"radial",</xsl:text> + <!-- Kluge alert - GFX doesn't handle gradientTransforms. We can help in --> + <!-- the common case of matrix transforms in user space. Other cases we ignore. --> + <!-- Even for this one case the results aren't anywhere near as good as real support in GFX. --> + <xsl:choose> + <!-- Kluge alert - this code is only meant to serve until GFX gets gradientTransform support. --> + <!-- Once GFX does gradientTransforms, only the straight apply-templates should be kept. --> + <xsl:when test="starts-with(@gradientTransform,'matrix') and @gradientUnits='userSpaceOnUse'"> + <xsl:call-template name="gradient-adjuster"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <xsl:apply-templates select="@cx|@cy|@r"/> + </xsl:otherwise> + </xsl:choose> + <!-- GFX doesn't currently support fx & fy --> + <!-- Uncommenting the following would support it here. --> + <!-- <xsl:apply-templates select="@fx|@fy"/> --> + <xsl:text>colors:[</xsl:text> + <xsl:apply-templates select="svg:stop"/> + <!-- Unfortunately GFX doesn't do gradientTransforms. --> + <!-- Uncommenting the following would support it here. --> + <!-- <xsl:apply-templates select="@cx|@cy|@r"/> --> + <!-- <xsl:apply-templates select="@gradientTransform"/> --> + <xsl:text>]}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:rect"> + <xsl:param name="groupAttrs" select="''"/> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:text>shape:{type:"rect",</xsl:text> + <xsl:apply-templates select="@x|@y|@width|@height"/> + <xsl:if test="@rx and @ry"> + <!-- Do approximate rounded corners if both an rx and ry are present. --> + <xsl:variable name="r" select="(@rx+@ry) div 2"/> + <xsl:text>r:</xsl:text> + <xsl:value-of select="$r"/> + </xsl:if> + <xsl:text>},</xsl:text> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:stop"> + <!-- Both gradient types use the same sort of stops --> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@offset"/> + <xsl:text>color:</xsl:text> + <xsl:apply-templates select="@style"/> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:text|svg:textPath"> + <xsl:param name="groupAttrs" select="''"/> + <!-- Support for textPath is not functional as GFX doesn't seem to have a --> + <!-- complete serialized form at this time. %FIX% --> + <xsl:text>{</xsl:text> + <xsl:apply-templates select="@id"/> + <xsl:choose> + <xsl:when test="contains(local-name(),'textpath')"> + <xsl:text>shape:{type:"textpath",text:"</xsl:text> + <xsl:apply-templates/> + <xsl:text>",</xsl:text> + <xsl:variable name="arguments" select="translate(normalize-space(substring-before(substring-after(@xlink:href,'('),')')),' ',',')"/> + <xsl:call-template name="url-processor"> + <xsl:with-param name="url" select="$arguments"/> + </xsl:call-template> + </xsl:when> + <xsl:otherwise> + <!-- Regular text has slightly different attributes --> + <xsl:choose> + <!-- It's possible for a text element to contain a textpath element. --> + <xsl:when test="not(textpath)"> + <xsl:text>shape:{type:"text",text:"</xsl:text> + <xsl:apply-templates/> + <xsl:text>",</xsl:text> + <xsl:apply-templates select="@x|@y"/> + </xsl:when> + <xsl:otherwise> + <xsl:apply-templates/> + </xsl:otherwise> + </xsl:choose> + </xsl:otherwise> + </xsl:choose> + <xsl:text>},</xsl:text> + <!-- Kluge alert - if no fill is defined, GFX won't display anything --> + <!-- Our quick fix here is to force a fill of some sort. --> + <xsl:if test="not(@fill)"> + <xsl:text>fill:"#000000",</xsl:text> + </xsl:if> + <xsl:value-of select="$groupAttrs"/> + <xsl:call-template name="common-attributes"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:text>}</xsl:text> + <xsl:if test="not(position()=last())"> + <xsl:text >,</xsl:text> + </xsl:if> + </xsl:template> + + <xsl:template match="svg:use"> + <xsl:param name="groupAttrs" select="''"/> + <!-- Use just refers to an existing element, essentially duplicating it. --> + <xsl:variable name="newGroupAttrs"> + <xsl:value-of select="$groupAttrs"/> + <xsl:apply-templates select="@style"/> + <!-- Note that we make no effort to guard against overlapping styles; we just order --> + <!-- them to be consistent. This naive approach will usually, but not always, work. --> + <xsl:apply-templates select="@fill"/> + <xsl:call-template name="stroke"> + <xsl:with-param name="node" select="."/> + </xsl:call-template> + <xsl:apply-templates select="@transform"/> + </xsl:variable> + <xsl:call-template name="url-processor"> + <xsl:with-param name="url" select="normalize-space(@xlink:href)"/> + <xsl:with-param name="groupAttrs" select="$newGroupAttrs"/> + </xsl:call-template> + </xsl:template> + + <!-- The main SVG element itself --> + + <xsl:template match="/svg:svg"> + <xsl:text>[</xsl:text> + <xsl:apply-templates select="&SupportedElements;"/> + <xsl:text>]</xsl:text> + </xsl:template> +</xsl:stylesheet>
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