falkTX
/
Carla
mirror of https://github.com/falkTX/Carla
1
0
Fork 0
Code Releases 42 Activity
Audio plugin host https://kx.studio/carla
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1000 Commits
16 Branches
16GB
Tree: a0cff9d861
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'a0cff9d861'
${ noResults }
Carla/source/modules/juce_gui_basics/drawables/juce_SVGParser.cpp

1317 lines
46KB
Raw Blame History 

  1. /*

  2.   ==============================================================================

  3. 

  4.    This file is part of the JUCE library.

  5.    Copyright (c) 2013 - Raw Material Software Ltd.

  6. 

  7.    Permission is granted to use this software under the terms of either:

  8.    a) the GPL v2 (or any later version)

  9.    b) the Affero GPL v3

  10. 

  11.    Details of these licenses can be found at: www.gnu.org/licenses

  12. 

  13.    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY

  14.    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR

  15.    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

  16. 

  17.    ------------------------------------------------------------------------------

  18. 

  19.    To release a closed-source product which uses JUCE, commercial licenses are

  20.    available: visit www.juce.com for more information.

  21. 

  22.   ==============================================================================

  23. */

  24. 

  25. class SVGState

  26. {

  27. public:

  28.     //==============================================================================

  29.     explicit SVGState (const XmlElement* const topLevel)

  30.         : topLevelXml (topLevel, nullptr),

  31.           elementX (0), elementY (0),

  32.           width (512), height (512),

  33.           viewBoxW (0), viewBoxH (0)

  34.     {

  35.     }

  36. 

  37.     struct XmlPath

  38.     {

  39.         XmlPath (const XmlElement* e, const XmlPath* p) noexcept : xml (e), parent (p)  {}

  40. 

  41.         const XmlElement& operator*() const noexcept            { jassert (xml != nullptr); return *xml; }

  42.         const XmlElement* operator->() const noexcept           { return xml; }

  43.         XmlPath getChild (const XmlElement* e) const noexcept   { return XmlPath (e, this); }

  44. 

  45.         const XmlElement* xml;

  46.         const XmlPath* parent;

  47.     };

  48. 

  49.     //==============================================================================

  50.     Drawable* parseSVGElement (const XmlPath& xml)

  51.     {

  52.         if (! xml->hasTagNameIgnoringNamespace ("svg"))

  53.             return nullptr;

  54. 

  55.         DrawableComposite* const drawable = new DrawableComposite();

  56. 

  57.         drawable->setName (xml->getStringAttribute ("id"));

  58. 

  59.         SVGState newState (*this);

  60. 

  61.         if (xml->hasAttribute ("transform"))

  62.             newState.addTransform (xml);

  63. 

  64.         newState.elementX = getCoordLength (xml->getStringAttribute ("x",      String (newState.elementX)), viewBoxW);

  65.         newState.elementY = getCoordLength (xml->getStringAttribute ("y",      String (newState.elementY)), viewBoxH);

  66.         newState.width    = getCoordLength (xml->getStringAttribute ("width",  String (newState.width)),    viewBoxW);

  67.         newState.height   = getCoordLength (xml->getStringAttribute ("height", String (newState.height)),   viewBoxH);

  68. 

  69.         if (newState.width  <= 0) newState.width  = 100;

  70.         if (newState.height <= 0) newState.height = 100;

  71. 

  72.         if (xml->hasAttribute ("viewBox"))

  73.         {

  74.             const String viewBoxAtt (xml->getStringAttribute ("viewBox"));

  75.             String::CharPointerType viewParams (viewBoxAtt.getCharPointer());

  76.             Point<float> vxy, vwh;

  77. 

  78.             if (parseCoords (viewParams, vxy, true)

  79.                  && parseCoords (viewParams, vwh, true)

  80.                  && vwh.x > 0

  81.                  && vwh.y > 0)

  82.             {

  83.                 newState.viewBoxW = vwh.x;

  84.                 newState.viewBoxH = vwh.y;

  85. 

  86.                 int placementFlags = 0;

  87. 

  88.                 const String aspect (xml->getStringAttribute ("preserveAspectRatio"));

  89. 

  90.                 if (aspect.containsIgnoreCase ("none"))

  91.                 {

  92.                     placementFlags = RectanglePlacement::stretchToFit;

  93.                 }

  94.                 else

  95.                 {

  96.                     if (aspect.containsIgnoreCase ("slice"))        placementFlags |= RectanglePlacement::fillDestination;

  97. 

  98.                     if (aspect.containsIgnoreCase ("xMin"))         placementFlags |= RectanglePlacement::xLeft;

  99.                     else if (aspect.containsIgnoreCase ("xMax"))    placementFlags |= RectanglePlacement::xRight;

  100.                     else                                            placementFlags |= RectanglePlacement::xMid;

  101. 

  102.                     if (aspect.containsIgnoreCase ("yMin"))         placementFlags |= RectanglePlacement::yTop;

  103.                     else if (aspect.containsIgnoreCase ("yMax"))    placementFlags |= RectanglePlacement::yBottom;

  104.                     else                                            placementFlags |= RectanglePlacement::yMid;

  105.                 }

  106. 

  107.                 newState.transform = RectanglePlacement (placementFlags)

  108.                                         .getTransformToFit (Rectangle<float> (vxy.x, vxy.y, vwh.x, vwh.y),

  109.                                                             Rectangle<float> (newState.width, newState.height))

  110.                                         .followedBy (newState.transform);

  111.             }

  112.         }

  113.         else

  114.         {

  115.             if (viewBoxW == 0)  newState.viewBoxW = newState.width;

  116.             if (viewBoxH == 0)  newState.viewBoxH = newState.height;

  117.         }

  118. 

  119.         newState.parseSubElements (xml, *drawable);

  120. 

  121.         drawable->setContentArea (RelativeRectangle (Rectangle<float> (newState.viewBoxW, newState.viewBoxH)));

  122.         drawable->resetBoundingBoxToContentArea();

  123. 

  124.         return drawable;

  125.     }

  126. 

  127.     //==============================================================================

  128.     void parsePathString (Path& path, const String& pathString) const

  129.     {

  130.         String::CharPointerType d (pathString.getCharPointer().findEndOfWhitespace());

  131. 

  132.         Point<float> subpathStart, last, last2, p1, p2, p3;

  133.         juce_wchar lastCommandChar = 0;

  134.         bool isRelative = true;

  135.         bool carryOn = true;

  136. 

  137.         const CharPointer_ASCII validCommandChars ("MmLlHhVvCcSsQqTtAaZz");

  138. 

  139.         while (! d.isEmpty())

  140.         {

  141.             if (validCommandChars.indexOf (*d) >= 0)

  142.             {

  143.                 lastCommandChar = d.getAndAdvance();

  144.                 isRelative = (lastCommandChar >= 'a' && lastCommandChar <= 'z');

  145.             }

  146. 

  147.             switch (lastCommandChar)

  148.             {

  149.             case 'M':

  150.             case 'm':

  151.             case 'L':

  152.             case 'l':

  153.                 if (parseCoordsOrSkip (d, p1, false))

  154.                 {

  155.                     if (isRelative)

  156.                         p1 += last;

  157. 

  158.                     if (lastCommandChar == 'M' || lastCommandChar == 'm')

  159.                     {

  160.                         subpathStart = p1;

  161.                         path.startNewSubPath (p1);

  162.                         lastCommandChar = 'l';

  163.                     }

  164.                     else

  165.                         path.lineTo (p1);

  166. 

  167.                     last2 = last;

  168.                     last = p1;

  169.                 }

  170.                 break;

  171. 

  172.             case 'H':

  173.             case 'h':

  174.                 if (parseCoord (d, p1.x, false, true))

  175.                 {

  176.                     if (isRelative)

  177.                         p1.x += last.x;

  178. 

  179.                     path.lineTo (p1.x, last.y);

  180. 

  181.                     last2.x = last.x;

  182.                     last.x = p1.x;

  183.                 }

  184.                 else

  185.                 {

  186.                     ++d;

  187.                 }

  188.                 break;

  189. 

  190.             case 'V':

  191.             case 'v':

  192.                 if (parseCoord (d, p1.y, false, false))

  193.                 {

  194.                     if (isRelative)

  195.                         p1.y += last.y;

  196. 

  197.                     path.lineTo (last.x, p1.y);

  198. 

  199.                     last2.y = last.y;

  200.                     last.y = p1.y;

  201.                 }

  202.                 else

  203.                 {

  204.                     ++d;

  205.                 }

  206.                 break;

  207. 

  208.             case 'C':

  209.             case 'c':

  210.                 if (parseCoordsOrSkip (d, p1, false)

  211.                      && parseCoordsOrSkip (d, p2, false)

  212.                      && parseCoordsOrSkip (d, p3, false))

  213.                 {

  214.                     if (isRelative)

  215.                     {

  216.                         p1 += last;

  217.                         p2 += last;

  218.                         p3 += last;

  219.                     }

  220. 

  221.                     path.cubicTo (p1, p2, p3);

  222. 

  223.                     last2 = p2;

  224.                     last = p3;

  225.                 }

  226.                 break;

  227. 

  228.             case 'S':

  229.             case 's':

  230.                 if (parseCoordsOrSkip (d, p1, false)

  231.                      && parseCoordsOrSkip (d, p3, false))

  232.                 {

  233.                     if (isRelative)

  234.                     {

  235.                         p1 += last;

  236.                         p3 += last;

  237.                     }

  238. 

  239.                     p2 = last + (last - last2);

  240.                     path.cubicTo (p2, p1, p3);

  241. 

  242.                     last2 = p1;

  243.                     last = p3;

  244.                 }

  245.                 break;

  246. 

  247.             case 'Q':

  248.             case 'q':

  249.                 if (parseCoordsOrSkip (d, p1, false)

  250.                      && parseCoordsOrSkip (d, p2, false))

  251.                 {

  252.                     if (isRelative)

  253.                     {

  254.                         p1 += last;

  255.                         p2 += last;

  256.                     }

  257. 

  258.                     path.quadraticTo (p1, p2);

  259. 

  260.                     last2 = p1;

  261.                     last = p2;

  262.                 }

  263.                 break;

  264. 

  265.             case 'T':

  266.             case 't':

  267.                 if (parseCoordsOrSkip (d, p1, false))

  268.                 {

  269.                     if (isRelative)

  270.                         p1 += last;

  271. 

  272.                     p2 = last + (last - last2);

  273.                     path.quadraticTo (p2, p1);

  274. 

  275.                     last2 = p2;

  276.                     last = p1;

  277.                 }

  278.                 break;

  279. 

  280.             case 'A':

  281.             case 'a':

  282.                 if (parseCoordsOrSkip (d, p1, false))

  283.                 {

  284.                     String num;

  285. 

  286.                     if (parseNextNumber (d, num, false))

  287.                     {

  288.                         const float angle = num.getFloatValue() * (180.0f / float_Pi);

  289. 

  290.                         if (parseNextNumber (d, num, false))

  291.                         {

  292.                             const bool largeArc = num.getIntValue() != 0;

  293. 

  294.                             if (parseNextNumber (d, num, false))

  295.                             {

  296.                                 const bool sweep = num.getIntValue() != 0;

  297. 

  298.                                 if (parseCoordsOrSkip (d, p2, false))

  299.                                 {

  300.                                     if (isRelative)

  301.                                         p2 += last;

  302. 

  303.                                     if (last != p2)

  304.                                     {

  305.                                         double centreX, centreY, startAngle, deltaAngle;

  306.                                         double rx = p1.x, ry = p1.y;

  307. 

  308.                                         endpointToCentreParameters (last.x, last.y, p2.x, p2.y,

  309.                                                                     angle, largeArc, sweep,

  310.                                                                     rx, ry, centreX, centreY,

  311.                                                                     startAngle, deltaAngle);

  312. 

  313.                                         path.addCentredArc ((float) centreX, (float) centreY,

  314.                                                             (float) rx, (float) ry,

  315.                                                             angle, (float) startAngle, (float) (startAngle + deltaAngle),

  316.                                                             false);

  317. 

  318.                                         path.lineTo (p2);

  319.                                     }

  320. 

  321.                                     last2 = last;

  322.                                     last = p2;

  323.                                 }

  324.                             }

  325.                         }

  326.                     }

  327.                 }

  328. 

  329.                 break;

  330. 

  331.             case 'Z':

  332.             case 'z':

  333.                 path.closeSubPath();

  334.                 last = last2 = subpathStart;

  335.                 d = d.findEndOfWhitespace();

  336.                 lastCommandChar = 'M';

  337.                 break;

  338. 

  339.             default:

  340.                 carryOn = false;

  341.                 break;

  342.             }

  343. 

  344.             if (! carryOn)

  345.                 break;

  346.         }

  347.     }

  348. 

  349. private:

  350.     //==============================================================================

  351.     const XmlPath topLevelXml;

  352.     float elementX, elementY, width, height, viewBoxW, viewBoxH;

  353.     AffineTransform transform;

  354.     String cssStyleText;

  355. 

  356.     //==============================================================================

  357.     void parseSubElements (const XmlPath& xml, DrawableComposite& parentDrawable)

  358.     {

  359.         forEachXmlChildElement (*xml, e)

  360.             parentDrawable.addAndMakeVisible (parseSubElement (xml.getChild (e)));

  361.     }

  362. 

  363.     Drawable* parseSubElement (const XmlPath& xml)

  364.     {

  365.         const String tag (xml->getTagNameWithoutNamespace());

  366. 

  367.         if (tag == "g")           return parseGroupElement (xml);

  368.         if (tag == "svg")         return parseSVGElement (xml);

  369.         if (tag == "path")        return parsePath (xml);

  370.         if (tag == "rect")        return parseRect (xml);

  371.         if (tag == "circle")      return parseCircle (xml);

  372.         if (tag == "ellipse")     return parseEllipse (xml);

  373.         if (tag == "line")        return parseLine (xml);

  374.         if (tag == "polyline")    return parsePolygon (xml, true);

  375.         if (tag == "polygon")     return parsePolygon (xml, false);

  376.         if (tag == "text")        return parseText (xml);

  377.         if (tag == "switch")      return parseSwitch (xml);

  378.         if (tag == "style")       parseCSSStyle (xml);

  379. 

  380.         return nullptr;

  381.     }

  382. 

  383.     DrawableComposite* parseSwitch (const XmlPath& xml)

  384.     {

  385.         if (const XmlElement* const group = xml->getChildByName ("g"))

  386.             return parseGroupElement (xml.getChild (group));

  387. 

  388.         return nullptr;

  389.     }

  390. 

  391.     DrawableComposite* parseGroupElement (const XmlPath& xml)

  392.     {

  393.         DrawableComposite* const drawable = new DrawableComposite();

  394. 

  395.         drawable->setName (xml->getStringAttribute ("id"));

  396. 

  397.         if (xml->hasAttribute ("transform"))

  398.         {

  399.             SVGState newState (*this);

  400.             newState.addTransform (xml);

  401. 

  402.             newState.parseSubElements (xml, *drawable);

  403.         }

  404.         else

  405.         {

  406.             parseSubElements (xml, *drawable);

  407.         }

  408. 

  409.         drawable->resetContentAreaAndBoundingBoxToFitChildren();

  410.         return drawable;

  411.     }

  412. 

  413.     //==============================================================================

  414.     Drawable* parsePath (const XmlPath& xml) const

  415.     {

  416.         Path path;

  417.         parsePathString (path, xml->getStringAttribute ("d"));

  418. 

  419.         if (getStyleAttribute (xml, "fill-rule").trim().equalsIgnoreCase ("evenodd"))

  420.             path.setUsingNonZeroWinding (false);

  421. 

  422.         return parseShape (xml, path);

  423.     }

  424. 

  425.     Drawable* parseRect (const XmlPath& xml) const

  426.     {

  427.         Path rect;

  428. 

  429.         const bool hasRX = xml->hasAttribute ("rx");

  430.         const bool hasRY = xml->hasAttribute ("ry");

  431. 

  432.         if (hasRX || hasRY)

  433.         {

  434.             float rx = getCoordLength (xml, "rx", viewBoxW);

  435.             float ry = getCoordLength (xml, "ry", viewBoxH);

  436. 

  437.             if (! hasRX)

  438.                 rx = ry;

  439.             else if (! hasRY)

  440.                 ry = rx;

  441. 

  442.             rect.addRoundedRectangle (getCoordLength (xml, "x", viewBoxW),

  443.                                       getCoordLength (xml, "y", viewBoxH),

  444.                                       getCoordLength (xml, "width", viewBoxW),

  445.                                       getCoordLength (xml, "height", viewBoxH),

  446.                                       rx, ry);

  447.         }

  448.         else

  449.         {

  450.             rect.addRectangle (getCoordLength (xml, "x", viewBoxW),

  451.                                getCoordLength (xml, "y", viewBoxH),

  452.                                getCoordLength (xml, "width", viewBoxW),

  453.                                getCoordLength (xml, "height", viewBoxH));

  454.         }

  455. 

  456.         return parseShape (xml, rect);

  457.     }

  458. 

  459.     Drawable* parseCircle (const XmlPath& xml) const

  460.     {

  461.         Path circle;

  462. 

  463.         const float cx = getCoordLength (xml, "cx", viewBoxW);

  464.         const float cy = getCoordLength (xml, "cy", viewBoxH);

  465.         const float radius = getCoordLength (xml, "r", viewBoxW);

  466. 

  467.         circle.addEllipse (cx - radius, cy - radius, radius * 2.0f, radius * 2.0f);

  468. 

  469.         return parseShape (xml, circle);

  470.     }

  471. 

  472.     Drawable* parseEllipse (const XmlPath& xml) const

  473.     {

  474.         Path ellipse;

  475. 

  476.         const float cx      = getCoordLength (xml, "cx", viewBoxW);

  477.         const float cy      = getCoordLength (xml, "cy", viewBoxH);

  478.         const float radiusX = getCoordLength (xml, "rx", viewBoxW);

  479.         const float radiusY = getCoordLength (xml, "ry", viewBoxH);

  480. 

  481.         ellipse.addEllipse (cx - radiusX, cy - radiusY, radiusX * 2.0f, radiusY * 2.0f);

  482. 

  483.         return parseShape (xml, ellipse);

  484.     }

  485. 

  486.     Drawable* parseLine (const XmlPath& xml) const

  487.     {

  488.         Path line;

  489. 

  490.         const float x1 = getCoordLength (xml, "x1", viewBoxW);

  491.         const float y1 = getCoordLength (xml, "y1", viewBoxH);

  492.         const float x2 = getCoordLength (xml, "x2", viewBoxW);

  493.         const float y2 = getCoordLength (xml, "y2", viewBoxH);

  494. 

  495.         line.startNewSubPath (x1, y1);

  496.         line.lineTo (x2, y2);

  497. 

  498.         return parseShape (xml, line);

  499.     }

  500. 

  501.     Drawable* parsePolygon (const XmlPath& xml, const bool isPolyline) const

  502.     {

  503.         const String pointsAtt (xml->getStringAttribute ("points"));

  504.         String::CharPointerType points (pointsAtt.getCharPointer());

  505.         Path path;

  506.         Point<float> p;

  507. 

  508.         if (parseCoords (points, p, true))

  509.         {

  510.             Point<float> first (p), last;

  511. 

  512.             path.startNewSubPath (first);

  513. 

  514.             while (parseCoords (points, p, true))

  515.             {

  516.                 last = p;

  517.                 path.lineTo (p);

  518.             }

  519. 

  520.             if ((! isPolyline) || first == last)

  521.                 path.closeSubPath();

  522.         }

  523. 

  524.         return parseShape (xml, path);

  525.     }

  526. 

  527.     //==============================================================================

  528.     Drawable* parseShape (const XmlPath& xml, Path& path,

  529.                           const bool shouldParseTransform = true) const

  530.     {

  531.         if (shouldParseTransform && xml->hasAttribute ("transform"))

  532.         {

  533.             SVGState newState (*this);

  534.             newState.addTransform (xml);

  535. 

  536.             return newState.parseShape (xml, path, false);

  537.         }

  538. 

  539.         DrawablePath* dp = new DrawablePath();

  540.         dp->setName (xml->getStringAttribute ("id"));

  541.         dp->setFill (Colours::transparentBlack);

  542. 

  543.         path.applyTransform (transform);

  544.         dp->setPath (path);

  545. 

  546.         Path::Iterator iter (path);

  547. 

  548.         bool containsClosedSubPath = false;

  549.         while (iter.next())

  550.         {

  551.             if (iter.elementType == Path::Iterator::closePath)

  552.             {

  553.                 containsClosedSubPath = true;

  554.                 break;

  555.             }

  556.         }

  557. 

  558.         dp->setFill (getPathFillType (path,

  559.                                       getStyleAttribute (xml, "fill"),

  560.                                       getStyleAttribute (xml, "fill-opacity"),

  561.                                       getStyleAttribute (xml, "opacity"),

  562.                                       containsClosedSubPath ? Colours::black

  563.                                                             : Colours::transparentBlack));

  564. 

  565.         const String strokeType (getStyleAttribute (xml, "stroke"));

  566. 

  567.         if (strokeType.isNotEmpty() && ! strokeType.equalsIgnoreCase ("none"))

  568.         {

  569.             dp->setStrokeFill (getPathFillType (path, strokeType,

  570.                                                 getStyleAttribute (xml, "stroke-opacity"),

  571.                                                 getStyleAttribute (xml, "opacity"),

  572.                                                 Colours::transparentBlack));

  573. 

  574.             dp->setStrokeType (getStrokeFor (xml));

  575.         }

  576. 

  577.         return dp;

  578.     }

  579. 

  580.     struct SetGradientStopsOp

  581.     {

  582.         const SVGState* state;

  583.         ColourGradient* gradient;

  584. 

  585.         void operator() (const XmlPath& xml)

  586.         {

  587.             state->addGradientStopsIn (*gradient, xml);

  588.         }

  589.     };

  590. 

  591.     void addGradientStopsIn (ColourGradient& cg, const XmlPath& fillXml) const

  592.     {

  593.         if (fillXml.xml != nullptr)

  594.         {

  595.             forEachXmlChildElementWithTagName (*fillXml, e, "stop")

  596.             {

  597.                 int index = 0;

  598.                 Colour col (parseColour (getStyleAttribute (fillXml.getChild (e), "stop-color"), index, Colours::black));

  599. 

  600.                 const String opacity (getStyleAttribute (fillXml.getChild (e), "stop-opacity", "1"));

  601.                 col = col.withMultipliedAlpha (jlimit (0.0f, 1.0f, opacity.getFloatValue()));

  602. 

  603.                 double offset = e->getDoubleAttribute ("offset");

  604. 

  605.                 if (e->getStringAttribute ("offset").containsChar ('%'))

  606.                     offset *= 0.01;

  607. 

  608.                 cg.addColour (jlimit (0.0, 1.0, offset), col);

  609.             }

  610.         }

  611.     }

  612. 

  613.     FillType getGradientFillType (const XmlPath& fillXml,

  614.                                   const Path& path,

  615.                                   const float opacity) const

  616.     {

  617.         ColourGradient gradient;

  618. 

  619.         {

  620.             const String id (fillXml->getStringAttribute ("xlink:href"));

  621. 

  622.             if (id.startsWithChar ('#'))

  623.             {

  624.                 SetGradientStopsOp op = { this, &gradient, };

  625.                 findElementForId (topLevelXml, id.substring (1), op);

  626.             }

  627.         }

  628. 

  629.         addGradientStopsIn (gradient, fillXml);

  630. 

  631.         if (gradient.getNumColours() > 0)

  632.         {

  633.             gradient.addColour (0.0, gradient.getColour (0));

  634.             gradient.addColour (1.0, gradient.getColour (gradient.getNumColours() - 1));

  635.         }

  636.         else

  637.         {

  638.             gradient.addColour (0.0, Colours::black);

  639.             gradient.addColour (1.0, Colours::black);

  640.         }

  641. 

  642.         if (opacity < 1.0f)

  643.             gradient.multiplyOpacity (opacity);

  644. 

  645.         jassert (gradient.getNumColours() > 0);

  646. 

  647.         gradient.isRadial = fillXml->hasTagNameIgnoringNamespace ("radialGradient");

  648. 

  649.         float gradientWidth = viewBoxW;

  650.         float gradientHeight = viewBoxH;

  651.         float dx = 0.0f;

  652.         float dy = 0.0f;

  653. 

  654.         const bool userSpace = fillXml->getStringAttribute ("gradientUnits").equalsIgnoreCase ("userSpaceOnUse");

  655. 

  656.         if (! userSpace)

  657.         {

  658.             const Rectangle<float> bounds (path.getBounds());

  659.             dx = bounds.getX();

  660.             dy = bounds.getY();

  661.             gradientWidth = bounds.getWidth();

  662.             gradientHeight = bounds.getHeight();

  663.         }

  664. 

  665.         if (gradient.isRadial)

  666.         {

  667.             if (userSpace)

  668.                 gradient.point1.setXY (dx + getCoordLength (fillXml->getStringAttribute ("cx", "50%"), gradientWidth),

  669.                                        dy + getCoordLength (fillXml->getStringAttribute ("cy", "50%"), gradientHeight));

  670.             else

  671.                 gradient.point1.setXY (dx + gradientWidth  * getCoordLength (fillXml->getStringAttribute ("cx", "50%"), 1.0f),

  672.                                        dy + gradientHeight * getCoordLength (fillXml->getStringAttribute ("cy", "50%"), 1.0f));

  673. 

  674.             const float radius = getCoordLength (fillXml->getStringAttribute ("r", "50%"), gradientWidth);

  675.             gradient.point2 = gradient.point1 + Point<float> (radius, 0.0f);

  676. 

  677.             //xxx (the fx, fy focal point isn't handled properly here..)

  678.         }

  679.         else

  680.         {

  681.             if (userSpace)

  682.             {

  683.                 gradient.point1.setXY (dx + getCoordLength (fillXml->getStringAttribute ("x1", "0%"), gradientWidth),

  684.                                        dy + getCoordLength (fillXml->getStringAttribute ("y1", "0%"), gradientHeight));

  685. 

  686.                 gradient.point2.setXY (dx + getCoordLength (fillXml->getStringAttribute ("x2", "100%"), gradientWidth),

  687.                                        dy + getCoordLength (fillXml->getStringAttribute ("y2", "0%"), gradientHeight));

  688.             }

  689.             else

  690.             {

  691.                 gradient.point1.setXY (dx + gradientWidth  * getCoordLength (fillXml->getStringAttribute ("x1", "0%"), 1.0f),

  692.                                        dy + gradientHeight * getCoordLength (fillXml->getStringAttribute ("y1", "0%"), 1.0f));

  693. 

  694.                 gradient.point2.setXY (dx + gradientWidth  * getCoordLength (fillXml->getStringAttribute ("x2", "100%"), 1.0f),

  695.                                        dy + gradientHeight * getCoordLength (fillXml->getStringAttribute ("y2", "0%"), 1.0f));

  696.             }

  697. 

  698.             if (gradient.point1 == gradient.point2)

  699.                 return Colour (gradient.getColour (gradient.getNumColours() - 1));

  700.         }

  701. 

  702.         FillType type (gradient);

  703. 

  704.         const AffineTransform gradientTransform (parseTransform (fillXml->getStringAttribute ("gradientTransform"))

  705.                                                     .followedBy (transform));

  706. 

  707.         if (gradient.isRadial)

  708.         {

  709.             type.transform = gradientTransform;

  710.         }

  711.         else

  712.         {

  713.             // Transform the perpendicular vector into the new coordinate space for the gradient.

  714.             // This vector is now the slope of the linear gradient as it should appear in the new coord space

  715.             const Point<float> perpendicular (Point<float> (gradient.point2.y - gradient.point1.y,

  716.                                                             gradient.point1.x - gradient.point2.x)

  717.                                                   .transformedBy (gradientTransform.withAbsoluteTranslation (0, 0)));

  718. 

  719.             const Point<float> newGradPoint1 (gradient.point1.transformedBy (gradientTransform));

  720.             const Point<float> newGradPoint2 (gradient.point2.transformedBy (gradientTransform));

  721. 

  722.             // Project the transformed gradient vector onto the transformed slope of the linear

  723.             // gradient as it should appear in the new coordinate space

  724.             const float scale = perpendicular.getDotProduct (newGradPoint2 - newGradPoint1)

  725.                                   / perpendicular.getDotProduct (perpendicular);

  726. 

  727.             type.gradient->point1 = newGradPoint1;

  728.             type.gradient->point2 = newGradPoint2 - perpendicular * scale;

  729.         }

  730. 

  731.         return type;

  732.     }

  733. 

  734.     struct GetFillTypeOp

  735.     {

  736.         const SVGState* state;

  737.         FillType* dest;

  738.         const Path* path;

  739.         float opacity;

  740. 

  741.         void operator() (const XmlPath& xml)

  742.         {

  743.             if (xml->hasTagNameIgnoringNamespace ("linearGradient")

  744.                  || xml->hasTagNameIgnoringNamespace ("radialGradient"))

  745.                 *dest = state->getGradientFillType (xml, *path, opacity);

  746.         }

  747.     };

  748. 

  749.     FillType getPathFillType (const Path& path,

  750.                               const String& fill,

  751.                               const String& fillOpacity,

  752.                               const String& overallOpacity,

  753.                               const Colour defaultColour) const

  754.     {

  755.         float opacity = 1.0f;

  756. 

  757.         if (overallOpacity.isNotEmpty())

  758.             opacity = jlimit (0.0f, 1.0f, overallOpacity.getFloatValue());

  759. 

  760.         if (fillOpacity.isNotEmpty())

  761.             opacity *= (jlimit (0.0f, 1.0f, fillOpacity.getFloatValue()));

  762. 

  763.         if (fill.startsWithIgnoreCase ("url"))

  764.         {

  765.             const String id (fill.fromFirstOccurrenceOf ("#", false, false)

  766.                                  .upToLastOccurrenceOf (")", false, false).trim());

  767. 

  768.             FillType result;

  769.             GetFillTypeOp op = { this, &result, &path, opacity };

  770. 

  771.             if (findElementForId (topLevelXml, id, op))

  772.                 return result;

  773.         }

  774. 

  775.         if (fill.equalsIgnoreCase ("none"))

  776.             return Colours::transparentBlack;

  777. 

  778.         int i = 0;

  779.         return parseColour (fill, i, defaultColour).withMultipliedAlpha (opacity);

  780.     }

  781. 

  782.     PathStrokeType getStrokeFor (const XmlPath& xml) const

  783.     {

  784.         const String strokeWidth (getStyleAttribute (xml, "stroke-width"));

  785.         const String cap (getStyleAttribute (xml, "stroke-linecap"));

  786.         const String join (getStyleAttribute (xml, "stroke-linejoin"));

  787. 

  788.         //const String mitreLimit (getStyleAttribute (xml, "stroke-miterlimit"));

  789.         //const String dashArray (getStyleAttribute (xml, "stroke-dasharray"));

  790.         //const String dashOffset (getStyleAttribute (xml, "stroke-dashoffset"));

  791. 

  792.         PathStrokeType::JointStyle joinStyle = PathStrokeType::mitered;

  793.         PathStrokeType::EndCapStyle capStyle = PathStrokeType::butt;

  794. 

  795.         if (join.equalsIgnoreCase ("round"))

  796.             joinStyle = PathStrokeType::curved;

  797.         else if (join.equalsIgnoreCase ("bevel"))

  798.             joinStyle = PathStrokeType::beveled;

  799. 

  800.         if (cap.equalsIgnoreCase ("round"))

  801.             capStyle = PathStrokeType::rounded;

  802.         else if (cap.equalsIgnoreCase ("square"))

  803.             capStyle = PathStrokeType::square;

  804. 

  805.         float ox = 0.0f, oy = 0.0f;

  806.         float x = getCoordLength (strokeWidth, viewBoxW), y = 0.0f;

  807.         transform.transformPoints (ox, oy, x, y);

  808. 

  809.         return PathStrokeType (strokeWidth.isNotEmpty() ? juce_hypot (x - ox, y - oy) : 1.0f,

  810.                                joinStyle, capStyle);

  811.     }

  812. 

  813.     //==============================================================================

  814.     Drawable* parseText (const XmlPath& xml)

  815.     {

  816.         Array <float> xCoords, yCoords, dxCoords, dyCoords;

  817. 

  818.         getCoordList (xCoords, getInheritedAttribute (xml, "x"), true, true);

  819.         getCoordList (yCoords, getInheritedAttribute (xml, "y"), true, false);

  820.         getCoordList (dxCoords, getInheritedAttribute (xml, "dx"), true, true);

  821.         getCoordList (dyCoords, getInheritedAttribute (xml, "dy"), true, false);

  822. 

  823. 

  824.         //xxx not done text yet!

  825. 

  826. 

  827.         forEachXmlChildElement (*xml, e)

  828.         {

  829.             if (e->isTextElement())

  830.             {

  831.                 const String text (e->getText());

  832. 

  833.                 Path path;

  834.                 Drawable* s = parseShape (xml.getChild (e), path);

  835.                 delete s;  // xxx not finished!

  836.             }

  837.             else if (e->hasTagNameIgnoringNamespace ("tspan"))

  838.             {

  839.                 Drawable* s = parseText (xml.getChild (e));

  840.                 delete s;  // xxx not finished!

  841.             }

  842.         }

  843. 

  844.         return nullptr;

  845.     }

  846. 

  847.     //==============================================================================

  848.     void addTransform (const XmlPath& xml)

  849.     {

  850.         transform = parseTransform (xml->getStringAttribute ("transform"))

  851.                         .followedBy (transform);

  852.     }

  853. 

  854.     //==============================================================================

  855.     bool parseCoord (String::CharPointerType& s, float& value, const bool allowUnits, const bool isX) const

  856.     {

  857.         String number;

  858. 

  859.         if (! parseNextNumber (s, number, allowUnits))

  860.         {

  861.             value = 0;

  862.             return false;

  863.         }

  864. 

  865.         value = getCoordLength (number, isX ? viewBoxW : viewBoxH);

  866.         return true;

  867.     }

  868. 

  869.     bool parseCoords (String::CharPointerType& s, Point<float>& p, const bool allowUnits) const

  870.     {

  871.         return parseCoord (s, p.x, allowUnits, true)

  872.             && parseCoord (s, p.y, allowUnits, false);

  873.     }

  874. 

  875.     bool parseCoordsOrSkip (String::CharPointerType& s, Point<float>& p, const bool allowUnits) const

  876.     {

  877.         const bool b = parseCoords (s, p, allowUnits);

  878.         if (! b)

  879.             ++s;

  880. 

  881.         return b;

  882.     }

  883. 

  884.     float getCoordLength (const String& s, const float sizeForProportions) const

  885.     {

  886.         float n = s.getFloatValue();

  887.         const int len = s.length();

  888. 

  889.         if (len > 2)

  890.         {

  891.             const float dpi = 96.0f;

  892. 

  893.             const juce_wchar n1 = s [len - 2];

  894.             const juce_wchar n2 = s [len - 1];

  895. 

  896.             if (n1 == 'i' && n2 == 'n')         n *= dpi;

  897.             else if (n1 == 'm' && n2 == 'm')    n *= dpi / 25.4f;

  898.             else if (n1 == 'c' && n2 == 'm')    n *= dpi / 2.54f;

  899.             else if (n1 == 'p' && n2 == 'c')    n *= 15.0f;

  900.             else if (n2 == '%')                 n *= 0.01f * sizeForProportions;

  901.         }

  902. 

  903.         return n;

  904.     }

  905. 

  906.     float getCoordLength (const XmlPath& xml, const char* attName, const float sizeForProportions) const

  907.     {

  908.         return getCoordLength (xml->getStringAttribute (attName), sizeForProportions);

  909.     }

  910. 

  911.     void getCoordList (Array <float>& coords, const String& list,

  912.                        const bool allowUnits, const bool isX) const

  913.     {

  914.         String::CharPointerType text (list.getCharPointer());

  915.         float value;

  916. 

  917.         while (parseCoord (text, value, allowUnits, isX))

  918.             coords.add (value);

  919.     }

  920. 

  921.     //==============================================================================

  922.     void parseCSSStyle (const XmlPath& xml)

  923.     {

  924.         cssStyleText = xml->getAllSubText() + "\n" + cssStyleText;

  925.     }

  926. 

  927.     static String::CharPointerType findStyleItem (String::CharPointerType source, String::CharPointerType name)

  928.     {

  929.         const int nameLength = (int) name.length();

  930. 

  931.         while (! source.isEmpty())

  932.         {

  933.             if (source.getAndAdvance() == '.'

  934.                  && CharacterFunctions::compareIgnoreCaseUpTo (source, name, nameLength) == 0)

  935.             {

  936.                 String::CharPointerType endOfName ((source + nameLength).findEndOfWhitespace());

  937. 

  938.                 if (*endOfName == '{')

  939.                     return endOfName;

  940.             }

  941.         }

  942. 

  943.         return source;

  944.     }

  945. 

  946.     String getStyleAttribute (const XmlPath& xml, const String& attributeName,

  947.                               const String& defaultValue = String::empty) const

  948.     {

  949.         if (xml->hasAttribute (attributeName))

  950.             return xml->getStringAttribute (attributeName, defaultValue);

  951. 

  952.         const String styleAtt (xml->getStringAttribute ("style"));

  953. 

  954.         if (styleAtt.isNotEmpty())

  955.         {

  956.             const String value (getAttributeFromStyleList (styleAtt, attributeName, String::empty));

  957. 

  958.             if (value.isNotEmpty())

  959.                 return value;

  960.         }

  961.         else if (xml->hasAttribute ("class"))

  962.         {

  963.             String::CharPointerType openBrace = findStyleItem (cssStyleText.getCharPointer(),

  964.                                                                xml->getStringAttribute ("class").getCharPointer());

  965. 

  966.             if (! openBrace.isEmpty())

  967.             {

  968.                 String::CharPointerType closeBrace = CharacterFunctions::find (openBrace, (juce_wchar) '}');

  969. 

  970.                 if (closeBrace != openBrace)

  971.                 {

  972.                     const String value (getAttributeFromStyleList (String (openBrace + 1, closeBrace),

  973.                                                                    attributeName, defaultValue));

  974.                     if (value.isNotEmpty())

  975.                         return value;

  976.                 }

  977.             }

  978.         }

  979. 

  980.         if (xml.parent != nullptr)

  981.             return getStyleAttribute (*xml.parent, attributeName, defaultValue);

  982. 

  983.         return defaultValue;

  984.     }

  985. 

  986.     String getInheritedAttribute (const XmlPath& xml, const String& attributeName) const

  987.     {

  988.         if (xml->hasAttribute (attributeName))

  989.             return xml->getStringAttribute (attributeName);

  990. 

  991.         if (xml.parent != nullptr)

  992.             return getInheritedAttribute  (*xml.parent, attributeName);

  993. 

  994.         return String::empty;

  995.     }

  996. 

  997.     //==============================================================================

  998.     static bool isIdentifierChar (const juce_wchar c)

  999.     {

  1000.         return CharacterFunctions::isLetter (c) || c == '-';

  1001.     }

  1002. 

  1003.     static String getAttributeFromStyleList (const String& list, const String& attributeName, const String& defaultValue)

  1004.     {

  1005.         int i = 0;

  1006. 

  1007.         for (;;)

  1008.         {

  1009.             i = list.indexOf (i, attributeName);

  1010. 

  1011.             if (i < 0)

  1012.                 break;

  1013. 

  1014.             if ((i == 0 || (i > 0 && ! isIdentifierChar (list [i - 1])))

  1015.                  && ! isIdentifierChar (list [i + attributeName.length()]))

  1016.             {

  1017.                 i = list.indexOfChar (i, ':');

  1018. 

  1019.                 if (i < 0)

  1020.                     break;

  1021. 

  1022.                 int end = list.indexOfChar (i, ';');

  1023. 

  1024.                 if (end < 0)

  1025.                     end = 0x7ffff;

  1026. 

  1027.                 return list.substring (i + 1, end).trim();

  1028.             }

  1029. 

  1030.             ++i;

  1031.         }

  1032. 

  1033.         return defaultValue;

  1034.     }

  1035. 

  1036.     //==============================================================================

  1037.     static bool parseNextNumber (String::CharPointerType& text, String& value, const bool allowUnits)

  1038.     {

  1039.         String::CharPointerType s (text);

  1040. 

  1041.         while (s.isWhitespace() || *s == ',')

  1042.             ++s;

  1043. 

  1044.         String::CharPointerType start (s);

  1045. 

  1046.         if (s.isDigit() || *s == '.' || *s == '-')

  1047.             ++s;

  1048. 

  1049.         while (s.isDigit() || *s == '.')

  1050.             ++s;

  1051. 

  1052.         if ((*s == 'e' || *s == 'E')

  1053.              && ((s + 1).isDigit() || s[1] == '-' || s[1] == '+'))

  1054.         {

  1055.             s += 2;

  1056. 

  1057.             while (s.isDigit())

  1058.                 ++s;

  1059.         }

  1060. 

  1061.         if (allowUnits)

  1062.             while (s.isLetter())

  1063.                 ++s;

  1064. 

  1065.         if (s == start)

  1066.         {

  1067.             text = s;

  1068.             return false;

  1069.         }

  1070. 

  1071.         value = String (start, s);

  1072. 

  1073.         while (s.isWhitespace() || *s == ',')

  1074.             ++s;

  1075. 

  1076.         text = s;

  1077.         return true;

  1078.     }

  1079. 

  1080.     //==============================================================================

  1081.     static Colour parseColour (const String& s, int& index, const Colour defaultColour)

  1082.     {

  1083.         if (s [index] == '#')

  1084.         {

  1085.             uint32 hex[6] = { 0 };

  1086.             int numChars = 0;

  1087. 

  1088.             for (int i = 6; --i >= 0;)

  1089.             {

  1090.                 const int hexValue = CharacterFunctions::getHexDigitValue (s [++index]);

  1091. 

  1092.                 if (hexValue >= 0)

  1093.                     hex [numChars++] = (uint32) hexValue;

  1094.                 else

  1095.                     break;

  1096.             }

  1097. 

  1098.             if (numChars <= 3)

  1099.                 return Colour ((uint8) (hex [0] * 0x11),

  1100.                                (uint8) (hex [1] * 0x11),

  1101.                                (uint8) (hex [2] * 0x11));

  1102. 

  1103.             return Colour ((uint8) ((hex [0] << 4) + hex [1]),

  1104.                            (uint8) ((hex [2] << 4) + hex [3]),

  1105.                            (uint8) ((hex [4] << 4) + hex [5]));

  1106.         }

  1107. 

  1108.         if (s [index] == 'r'

  1109.               && s [index + 1] == 'g'

  1110.               && s [index + 2] == 'b')

  1111.         {

  1112.             const int openBracket = s.indexOfChar (index, '(');

  1113.             const int closeBracket = s.indexOfChar (openBracket, ')');

  1114. 

  1115.             if (openBracket >= 3 && closeBracket > openBracket)

  1116.             {

  1117.                 index = closeBracket;

  1118. 

  1119.                 StringArray tokens;

  1120.                 tokens.addTokens (s.substring (openBracket + 1, closeBracket), ",", "");

  1121.                 tokens.trim();

  1122.                 tokens.removeEmptyStrings();

  1123. 

  1124.                 if (tokens[0].containsChar ('%'))

  1125.                     return Colour ((uint8) roundToInt (2.55 * tokens[0].getDoubleValue()),

  1126.                                    (uint8) roundToInt (2.55 * tokens[1].getDoubleValue()),

  1127.                                    (uint8) roundToInt (2.55 * tokens[2].getDoubleValue()));

  1128.                 else

  1129.                     return Colour ((uint8) tokens[0].getIntValue(),

  1130.                                    (uint8) tokens[1].getIntValue(),

  1131.                                    (uint8) tokens[2].getIntValue());

  1132.             }

  1133.         }

  1134. 

  1135.         return Colours::findColourForName (s, defaultColour);

  1136.     }

  1137. 

  1138.     static AffineTransform parseTransform (String t)

  1139.     {

  1140.         AffineTransform result;

  1141. 

  1142.         while (t.isNotEmpty())

  1143.         {

  1144.             StringArray tokens;

  1145.             tokens.addTokens (t.fromFirstOccurrenceOf ("(", false, false)

  1146.                                .upToFirstOccurrenceOf (")", false, false),

  1147.                               ", ", String::empty);

  1148. 

  1149.             tokens.removeEmptyStrings (true);

  1150. 

  1151.             float numbers [6];

  1152. 

  1153.             for (int i = 0; i < 6; ++i)

  1154.                 numbers[i] = tokens[i].getFloatValue();

  1155. 

  1156.             AffineTransform trans;

  1157. 

  1158.             if (t.startsWithIgnoreCase ("matrix"))

  1159.             {

  1160.                 trans = AffineTransform (numbers[0], numbers[2], numbers[4],

  1161.                                          numbers[1], numbers[3], numbers[5]);

  1162.             }

  1163.             else if (t.startsWithIgnoreCase ("translate"))

  1164.             {

  1165.                 jassert (tokens.size() == 2);

  1166.                 trans = AffineTransform::translation (numbers[0], numbers[1]);

  1167.             }

  1168.             else if (t.startsWithIgnoreCase ("scale"))

  1169.             {

  1170.                 if (tokens.size() == 1)

  1171.                     trans = AffineTransform::scale (numbers[0]);

  1172.                 else

  1173.                     trans = AffineTransform::scale (numbers[0], numbers[1]);

  1174.             }

  1175.             else if (t.startsWithIgnoreCase ("rotate"))

  1176.             {

  1177.                 if (tokens.size() != 3)

  1178.                     trans = AffineTransform::rotation (numbers[0] / (180.0f / float_Pi));

  1179.                 else

  1180.                     trans = AffineTransform::rotation (numbers[0] / (180.0f / float_Pi),

  1181.                                                        numbers[1], numbers[2]);

  1182.             }

  1183.             else if (t.startsWithIgnoreCase ("skewX"))

  1184.             {

  1185.                 trans = AffineTransform (1.0f, std::tan (numbers[0] * (float_Pi / 180.0f)), 0.0f,

  1186.                                          0.0f, 1.0f, 0.0f);

  1187.             }

  1188.             else if (t.startsWithIgnoreCase ("skewY"))

  1189.             {

  1190.                 trans = AffineTransform (1.0f, 0.0f, 0.0f,

  1191.                                          std::tan (numbers[0] * (float_Pi / 180.0f)), 1.0f, 0.0f);

  1192.             }

  1193. 

  1194.             result = trans.followedBy (result);

  1195.             t = t.fromFirstOccurrenceOf (")", false, false).trimStart();

  1196.         }

  1197. 

  1198.         return result;

  1199.     }

  1200. 

  1201.     static void endpointToCentreParameters (const double x1, const double y1,

  1202.                                             const double x2, const double y2,

  1203.                                             const double angle,

  1204.                                             const bool largeArc, const bool sweep,

  1205.                                             double& rx, double& ry,

  1206.                                             double& centreX, double& centreY,

  1207.                                             double& startAngle, double& deltaAngle)

  1208.     {

  1209.         const double midX = (x1 - x2) * 0.5;

  1210.         const double midY = (y1 - y2) * 0.5;

  1211. 

  1212.         const double cosAngle = cos (angle);

  1213.         const double sinAngle = sin (angle);

  1214.         const double xp = cosAngle * midX + sinAngle * midY;

  1215.         const double yp = cosAngle * midY - sinAngle * midX;

  1216.         const double xp2 = xp * xp;

  1217.         const double yp2 = yp * yp;

  1218. 

  1219.         double rx2 = rx * rx;

  1220.         double ry2 = ry * ry;

  1221. 

  1222.         const double s = (xp2 / rx2) + (yp2 / ry2);

  1223.         double c;

  1224. 

  1225.         if (s <= 1.0)

  1226.         {

  1227.             c = std::sqrt (jmax (0.0, ((rx2 * ry2) - (rx2 * yp2) - (ry2 * xp2))

  1228.                                          / (( rx2 * yp2) + (ry2 * xp2))));

  1229. 

  1230.             if (largeArc == sweep)

  1231.                 c = -c;

  1232.         }

  1233.         else

  1234.         {

  1235.             const double s2 = std::sqrt (s);

  1236.             rx *= s2;

  1237.             ry *= s2;

  1238.             c = 0;

  1239.         }

  1240. 

  1241.         const double cpx = ((rx * yp) / ry) * c;

  1242.         const double cpy = ((-ry * xp) / rx) * c;

  1243. 

  1244.         centreX = ((x1 + x2) * 0.5) + (cosAngle * cpx) - (sinAngle * cpy);

  1245.         centreY = ((y1 + y2) * 0.5) + (sinAngle * cpx) + (cosAngle * cpy);

  1246. 

  1247.         const double ux = (xp - cpx) / rx;

  1248.         const double uy = (yp - cpy) / ry;

  1249.         const double vx = (-xp - cpx) / rx;

  1250.         const double vy = (-yp - cpy) / ry;

  1251. 

  1252.         const double length = juce_hypot (ux, uy);

  1253. 

  1254.         startAngle = acos (jlimit (-1.0, 1.0, ux / length));

  1255. 

  1256.         if (uy < 0)

  1257.             startAngle = -startAngle;

  1258. 

  1259.         startAngle += double_Pi * 0.5;

  1260. 

  1261.         deltaAngle = acos (jlimit (-1.0, 1.0, ((ux * vx) + (uy * vy))

  1262.                                                 / (length * juce_hypot (vx, vy))));

  1263. 

  1264.         if ((ux * vy) - (uy * vx) < 0)

  1265.             deltaAngle = -deltaAngle;

  1266. 

  1267.         if (sweep)

  1268.         {

  1269.             if (deltaAngle < 0)

  1270.                 deltaAngle += double_Pi * 2.0;

  1271.         }

  1272.         else

  1273.         {

  1274.             if (deltaAngle > 0)

  1275.                 deltaAngle -= double_Pi * 2.0;

  1276.         }

  1277. 

  1278.         deltaAngle = fmod (deltaAngle, double_Pi * 2.0);

  1279.     }

  1280. 

  1281.     template <typename OperationType>

  1282.     static bool findElementForId (const XmlPath& parent, const String& id, OperationType& op)

  1283.     {

  1284.         forEachXmlChildElement (*parent, e)

  1285.         {

  1286.             if (e->compareAttribute ("id", id))

  1287.             {

  1288.                 op (parent.getChild (e));

  1289.                 return true;

  1290.             }

  1291. 

  1292.             if (findElementForId (parent.getChild (e), id, op))

  1293.                 return true;

  1294.         }

  1295. 

  1296.         return false;

  1297.     }

  1298. 

  1299.     SVGState& operator= (const SVGState&) JUCE_DELETED_FUNCTION;

  1300. };

  1301. 

  1302. 

  1303. //==============================================================================

  1304. Drawable* Drawable::createFromSVG (const XmlElement& svgDocument)

  1305. {

  1306.     SVGState state (&svgDocument);

  1307.     return state.parseSVGElement (SVGState::XmlPath (&svgDocument, nullptr));

  1308. }

  1309. 

  1310. Path Drawable::parseSVGPath (const String& svgPath)

  1311. {

  1312.     SVGState state (nullptr);

  1313.     Path p;

  1314.     state.parsePathString (p, svgPath);

  1315.     return p;

  1316. }