mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
1278 lines
45 KiB
C++
1278 lines
45 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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class SVGState
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{
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public:
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//==============================================================================
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explicit SVGState (const XmlElement* const topLevel)
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: topLevelXml (topLevel),
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elementX (0), elementY (0),
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width (512), height (512),
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viewBoxW (0), viewBoxH (0)
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{
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}
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//==============================================================================
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Drawable* parseSVGElement (const XmlElement& xml)
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{
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if (! xml.hasTagNameIgnoringNamespace ("svg"))
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return nullptr;
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DrawableComposite* const drawable = new DrawableComposite();
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drawable->setName (xml.getStringAttribute ("id"));
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SVGState newState (*this);
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if (xml.hasAttribute ("transform"))
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newState.addTransform (xml);
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newState.elementX = getCoordLength (xml.getStringAttribute ("x", String (newState.elementX)), viewBoxW);
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newState.elementY = getCoordLength (xml.getStringAttribute ("y", String (newState.elementY)), viewBoxH);
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newState.width = getCoordLength (xml.getStringAttribute ("width", String (newState.width)), viewBoxW);
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newState.height = getCoordLength (xml.getStringAttribute ("height", String (newState.height)), viewBoxH);
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if (newState.width <= 0) newState.width = 100;
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if (newState.height <= 0) newState.height = 100;
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if (xml.hasAttribute ("viewBox"))
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{
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const String viewBoxAtt (xml.getStringAttribute ("viewBox"));
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String::CharPointerType viewParams (viewBoxAtt.getCharPointer());
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Point<float> vxy, vwh;
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if (parseCoords (viewParams, vxy, true)
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&& parseCoords (viewParams, vwh, true)
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&& vwh.x > 0
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&& vwh.y > 0)
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{
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newState.viewBoxW = vwh.x;
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newState.viewBoxH = vwh.y;
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int placementFlags = 0;
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const String aspect (xml.getStringAttribute ("preserveAspectRatio"));
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if (aspect.containsIgnoreCase ("none"))
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{
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placementFlags = RectanglePlacement::stretchToFit;
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}
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else
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{
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if (aspect.containsIgnoreCase ("slice")) placementFlags |= RectanglePlacement::fillDestination;
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if (aspect.containsIgnoreCase ("xMin")) placementFlags |= RectanglePlacement::xLeft;
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else if (aspect.containsIgnoreCase ("xMax")) placementFlags |= RectanglePlacement::xRight;
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else placementFlags |= RectanglePlacement::xMid;
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if (aspect.containsIgnoreCase ("yMin")) placementFlags |= RectanglePlacement::yTop;
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else if (aspect.containsIgnoreCase ("yMax")) placementFlags |= RectanglePlacement::yBottom;
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else placementFlags |= RectanglePlacement::yMid;
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}
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newState.transform = RectanglePlacement (placementFlags)
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.getTransformToFit (Rectangle<float> (vxy.x, vxy.y, vwh.x, vwh.y),
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Rectangle<float> (newState.width, newState.height))
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.followedBy (newState.transform);
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}
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}
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else
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{
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if (viewBoxW == 0) newState.viewBoxW = newState.width;
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if (viewBoxH == 0) newState.viewBoxH = newState.height;
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}
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newState.parseSubElements (xml, *drawable);
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drawable->setContentArea (RelativeRectangle (Rectangle<float> (newState.viewBoxW, newState.viewBoxH)));
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drawable->resetBoundingBoxToContentArea();
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return drawable;
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}
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//==============================================================================
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void parsePathString (Path& path, const String& pathString) const
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{
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String::CharPointerType d (pathString.getCharPointer().findEndOfWhitespace());
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Point<float> subpathStart, last, last2, p1, p2, p3;
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juce_wchar lastCommandChar = 0;
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bool isRelative = true;
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bool carryOn = true;
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const CharPointer_ASCII validCommandChars ("MmLlHhVvCcSsQqTtAaZz");
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while (! d.isEmpty())
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{
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if (validCommandChars.indexOf (*d) >= 0)
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{
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lastCommandChar = d.getAndAdvance();
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isRelative = (lastCommandChar >= 'a' && lastCommandChar <= 'z');
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}
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switch (lastCommandChar)
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{
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case 'M':
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case 'm':
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case 'L':
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case 'l':
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if (parseCoordsOrSkip (d, p1, false))
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{
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if (isRelative)
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p1 += last;
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if (lastCommandChar == 'M' || lastCommandChar == 'm')
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{
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subpathStart = p1;
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path.startNewSubPath (p1);
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lastCommandChar = 'l';
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}
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else
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path.lineTo (p1);
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last2 = last;
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last = p1;
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}
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break;
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case 'H':
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case 'h':
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if (parseCoord (d, p1.x, false, true))
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{
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if (isRelative)
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p1.x += last.x;
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path.lineTo (p1.x, last.y);
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last2.x = last.x;
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last.x = p1.x;
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}
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else
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{
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++d;
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}
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break;
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case 'V':
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case 'v':
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if (parseCoord (d, p1.y, false, false))
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{
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if (isRelative)
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p1.y += last.y;
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path.lineTo (last.x, p1.y);
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last2.y = last.y;
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last.y = p1.y;
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}
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else
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{
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++d;
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}
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break;
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case 'C':
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case 'c':
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if (parseCoordsOrSkip (d, p1, false)
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&& parseCoordsOrSkip (d, p2, false)
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&& parseCoordsOrSkip (d, p3, false))
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{
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if (isRelative)
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{
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p1 += last;
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p2 += last;
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p3 += last;
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}
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path.cubicTo (p1, p2, p3);
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last2 = p2;
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last = p3;
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}
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break;
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case 'S':
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case 's':
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if (parseCoordsOrSkip (d, p1, false)
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&& parseCoordsOrSkip (d, p3, false))
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{
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if (isRelative)
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{
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p1 += last;
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p3 += last;
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}
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p2 = last + (last - last2);
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path.cubicTo (p2, p1, p3);
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last2 = p1;
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last = p3;
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}
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break;
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case 'Q':
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case 'q':
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if (parseCoordsOrSkip (d, p1, false)
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&& parseCoordsOrSkip (d, p2, false))
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{
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if (isRelative)
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{
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p1 += last;
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p2 += last;
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}
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path.quadraticTo (p1, p2);
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last2 = p1;
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last = p2;
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}
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break;
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case 'T':
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case 't':
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if (parseCoordsOrSkip (d, p1, false))
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{
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if (isRelative)
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p1 += last;
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p2 = last + (last - last2);
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path.quadraticTo (p2, p1);
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last2 = p2;
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last = p1;
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}
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break;
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case 'A':
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case 'a':
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if (parseCoordsOrSkip (d, p1, false))
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{
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String num;
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if (parseNextNumber (d, num, false))
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{
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const float angle = num.getFloatValue() * (180.0f / float_Pi);
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if (parseNextNumber (d, num, false))
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{
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const bool largeArc = num.getIntValue() != 0;
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if (parseNextNumber (d, num, false))
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{
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const bool sweep = num.getIntValue() != 0;
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if (parseCoordsOrSkip (d, p2, false))
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{
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if (isRelative)
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p2 += last;
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if (last != p2)
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{
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double centreX, centreY, startAngle, deltaAngle;
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double rx = p1.x, ry = p1.y;
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endpointToCentreParameters (last.x, last.y, p2.x, p2.y,
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angle, largeArc, sweep,
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rx, ry, centreX, centreY,
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startAngle, deltaAngle);
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path.addCentredArc ((float) centreX, (float) centreY,
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(float) rx, (float) ry,
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angle, (float) startAngle, (float) (startAngle + deltaAngle),
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false);
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path.lineTo (p2);
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}
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last2 = last;
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last = p2;
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}
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}
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}
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}
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}
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break;
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case 'Z':
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case 'z':
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path.closeSubPath();
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last = last2 = subpathStart;
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d = d.findEndOfWhitespace();
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lastCommandChar = 'M';
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break;
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default:
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carryOn = false;
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break;
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}
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if (! carryOn)
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break;
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}
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}
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private:
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//==============================================================================
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const XmlElement* const topLevelXml;
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float elementX, elementY, width, height, viewBoxW, viewBoxH;
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AffineTransform transform;
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String cssStyleText;
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//==============================================================================
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void parseSubElements (const XmlElement& xml, DrawableComposite& parentDrawable)
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{
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forEachXmlChildElement (xml, e)
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parentDrawable.addAndMakeVisible (parseSubElement (*e));
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}
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Drawable* parseSubElement (const XmlElement& xml)
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{
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const String tag (xml.getTagNameWithoutNamespace());
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if (tag == "g") return parseGroupElement (xml);
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if (tag == "svg") return parseSVGElement (xml);
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if (tag == "path") return parsePath (xml);
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if (tag == "rect") return parseRect (xml);
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if (tag == "circle") return parseCircle (xml);
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if (tag == "ellipse") return parseEllipse (xml);
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if (tag == "line") return parseLine (xml);
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if (tag == "polyline") return parsePolygon (xml, true);
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if (tag == "polygon") return parsePolygon (xml, false);
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if (tag == "text") return parseText (xml);
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if (tag == "switch") return parseSwitch (xml);
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if (tag == "style") parseCSSStyle (xml);
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return nullptr;
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}
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DrawableComposite* parseSwitch (const XmlElement& xml)
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{
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if (const XmlElement* const group = xml.getChildByName ("g"))
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return parseGroupElement (*group);
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return nullptr;
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}
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DrawableComposite* parseGroupElement (const XmlElement& xml)
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{
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DrawableComposite* const drawable = new DrawableComposite();
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drawable->setName (xml.getStringAttribute ("id"));
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if (xml.hasAttribute ("transform"))
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{
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SVGState newState (*this);
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newState.addTransform (xml);
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newState.parseSubElements (xml, *drawable);
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}
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else
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{
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parseSubElements (xml, *drawable);
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}
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drawable->resetContentAreaAndBoundingBoxToFitChildren();
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return drawable;
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}
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//==============================================================================
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Drawable* parsePath (const XmlElement& xml) const
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{
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Path path;
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parsePathString (path, xml.getStringAttribute ("d"));
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if (getStyleAttribute (&xml, "fill-rule").trim().equalsIgnoreCase ("evenodd"))
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path.setUsingNonZeroWinding (false);
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return parseShape (xml, path);
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}
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Drawable* parseRect (const XmlElement& xml) const
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{
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Path rect;
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const bool hasRX = xml.hasAttribute ("rx");
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const bool hasRY = xml.hasAttribute ("ry");
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if (hasRX || hasRY)
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{
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float rx = getCoordLength (xml, "rx", viewBoxW);
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float ry = getCoordLength (xml, "ry", viewBoxH);
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if (! hasRX)
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rx = ry;
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else if (! hasRY)
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ry = rx;
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rect.addRoundedRectangle (getCoordLength (xml, "x", viewBoxW),
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getCoordLength (xml, "y", viewBoxH),
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getCoordLength (xml, "width", viewBoxW),
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getCoordLength (xml, "height", viewBoxH),
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rx, ry);
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}
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else
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{
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rect.addRectangle (getCoordLength (xml, "x", viewBoxW),
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getCoordLength (xml, "y", viewBoxH),
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getCoordLength (xml, "width", viewBoxW),
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getCoordLength (xml, "height", viewBoxH));
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}
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return parseShape (xml, rect);
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}
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Drawable* parseCircle (const XmlElement& xml) const
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{
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Path circle;
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const float cx = getCoordLength (xml, "cx", viewBoxW);
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const float cy = getCoordLength (xml, "cy", viewBoxH);
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const float radius = getCoordLength (xml, "r", viewBoxW);
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circle.addEllipse (cx - radius, cy - radius, radius * 2.0f, radius * 2.0f);
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return parseShape (xml, circle);
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}
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Drawable* parseEllipse (const XmlElement& xml) const
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{
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Path ellipse;
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const float cx = getCoordLength (xml, "cx", viewBoxW);
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const float cy = getCoordLength (xml, "cy", viewBoxH);
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const float radiusX = getCoordLength (xml, "rx", viewBoxW);
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const float radiusY = getCoordLength (xml, "ry", viewBoxH);
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ellipse.addEllipse (cx - radiusX, cy - radiusY, radiusX * 2.0f, radiusY * 2.0f);
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return parseShape (xml, ellipse);
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}
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Drawable* parseLine (const XmlElement& xml) const
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{
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Path line;
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const float x1 = getCoordLength (xml, "x1", viewBoxW);
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const float y1 = getCoordLength (xml, "y1", viewBoxH);
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const float x2 = getCoordLength (xml, "x2", viewBoxW);
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const float y2 = getCoordLength (xml, "y2", viewBoxH);
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line.startNewSubPath (x1, y1);
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line.lineTo (x2, y2);
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return parseShape (xml, line);
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}
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Drawable* parsePolygon (const XmlElement& xml, const bool isPolyline) const
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{
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const String pointsAtt (xml.getStringAttribute ("points"));
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String::CharPointerType points (pointsAtt.getCharPointer());
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Path path;
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Point<float> p;
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if (parseCoords (points, p, true))
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{
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Point<float> first (p), last;
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path.startNewSubPath (first);
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while (parseCoords (points, p, true))
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{
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last = p;
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path.lineTo (p);
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}
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if ((! isPolyline) || first == last)
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path.closeSubPath();
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}
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return parseShape (xml, path);
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}
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//==============================================================================
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Drawable* parseShape (const XmlElement& xml, Path& path,
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const bool shouldParseTransform = true) const
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{
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if (shouldParseTransform && xml.hasAttribute ("transform"))
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{
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SVGState newState (*this);
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newState.addTransform (xml);
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return newState.parseShape (xml, path, false);
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}
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DrawablePath* dp = new DrawablePath();
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dp->setName (xml.getStringAttribute ("id"));
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dp->setFill (Colours::transparentBlack);
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path.applyTransform (transform);
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dp->setPath (path);
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Path::Iterator iter (path);
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bool containsClosedSubPath = false;
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while (iter.next())
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{
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if (iter.elementType == Path::Iterator::closePath)
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{
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containsClosedSubPath = true;
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break;
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}
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}
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dp->setFill (getPathFillType (path,
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getStyleAttribute (&xml, "fill"),
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getStyleAttribute (&xml, "fill-opacity"),
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getStyleAttribute (&xml, "opacity"),
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containsClosedSubPath ? Colours::black
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: Colours::transparentBlack));
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const String strokeType (getStyleAttribute (&xml, "stroke"));
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if (strokeType.isNotEmpty() && ! strokeType.equalsIgnoreCase ("none"))
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{
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dp->setStrokeFill (getPathFillType (path, strokeType,
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getStyleAttribute (&xml, "stroke-opacity"),
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getStyleAttribute (&xml, "opacity"),
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Colours::transparentBlack));
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dp->setStrokeType (getStrokeFor (&xml));
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}
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return dp;
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}
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|
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const XmlElement* findLinkedElement (const XmlElement* e) const
|
|
{
|
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const String id (e->getStringAttribute ("xlink:href"));
|
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|
|
if (! id.startsWithChar ('#'))
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return nullptr;
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return findElementForId (topLevelXml, id.substring (1));
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}
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|
|
void addGradientStopsIn (ColourGradient& cg, const XmlElement* const fillXml) const
|
|
{
|
|
if (fillXml != nullptr)
|
|
{
|
|
forEachXmlChildElementWithTagName (*fillXml, e, "stop")
|
|
{
|
|
int index = 0;
|
|
Colour col (parseColour (getStyleAttribute (e, "stop-color"), index, Colours::black));
|
|
|
|
const String opacity (getStyleAttribute (e, "stop-opacity", "1"));
|
|
col = col.withMultipliedAlpha (jlimit (0.0f, 1.0f, opacity.getFloatValue()));
|
|
|
|
double offset = e->getDoubleAttribute ("offset");
|
|
|
|
if (e->getStringAttribute ("offset").containsChar ('%'))
|
|
offset *= 0.01;
|
|
|
|
cg.addColour (jlimit (0.0, 1.0, offset), col);
|
|
}
|
|
}
|
|
}
|
|
|
|
FillType getGradientFillType (const XmlElement* fillXml,
|
|
const Path& path,
|
|
const float opacity) const
|
|
{
|
|
ColourGradient gradient;
|
|
|
|
addGradientStopsIn (gradient, findLinkedElement (fillXml));
|
|
addGradientStopsIn (gradient, fillXml);
|
|
|
|
if (gradient.getNumColours() > 0)
|
|
{
|
|
gradient.addColour (0.0, gradient.getColour (0));
|
|
gradient.addColour (1.0, gradient.getColour (gradient.getNumColours() - 1));
|
|
}
|
|
else
|
|
{
|
|
gradient.addColour (0.0, Colours::black);
|
|
gradient.addColour (1.0, Colours::black);
|
|
}
|
|
|
|
if (opacity < 1.0f)
|
|
gradient.multiplyOpacity (opacity);
|
|
|
|
jassert (gradient.getNumColours() > 0);
|
|
|
|
gradient.isRadial = fillXml->hasTagNameIgnoringNamespace ("radialGradient");
|
|
|
|
float gradientWidth = viewBoxW;
|
|
float gradientHeight = viewBoxH;
|
|
float dx = 0.0f;
|
|
float dy = 0.0f;
|
|
|
|
const bool userSpace = fillXml->getStringAttribute ("gradientUnits").equalsIgnoreCase ("userSpaceOnUse");
|
|
|
|
if (! userSpace)
|
|
{
|
|
const Rectangle<float> bounds (path.getBounds());
|
|
dx = bounds.getX();
|
|
dy = bounds.getY();
|
|
gradientWidth = bounds.getWidth();
|
|
gradientHeight = bounds.getHeight();
|
|
}
|
|
|
|
if (gradient.isRadial)
|
|
{
|
|
if (userSpace)
|
|
gradient.point1.setXY (dx + getCoordLength (fillXml->getStringAttribute ("cx", "50%"), gradientWidth),
|
|
dy + getCoordLength (fillXml->getStringAttribute ("cy", "50%"), gradientHeight));
|
|
else
|
|
gradient.point1.setXY (dx + gradientWidth * getCoordLength (fillXml->getStringAttribute ("cx", "50%"), 1.0f),
|
|
dy + gradientHeight * getCoordLength (fillXml->getStringAttribute ("cy", "50%"), 1.0f));
|
|
|
|
const float radius = getCoordLength (fillXml->getStringAttribute ("r", "50%"), gradientWidth);
|
|
gradient.point2 = gradient.point1 + Point<float> (radius, 0.0f);
|
|
|
|
//xxx (the fx, fy focal point isn't handled properly here..)
|
|
}
|
|
else
|
|
{
|
|
if (userSpace)
|
|
{
|
|
gradient.point1.setXY (dx + getCoordLength (fillXml->getStringAttribute ("x1", "0%"), gradientWidth),
|
|
dy + getCoordLength (fillXml->getStringAttribute ("y1", "0%"), gradientHeight));
|
|
|
|
gradient.point2.setXY (dx + getCoordLength (fillXml->getStringAttribute ("x2", "100%"), gradientWidth),
|
|
dy + getCoordLength (fillXml->getStringAttribute ("y2", "0%"), gradientHeight));
|
|
}
|
|
else
|
|
{
|
|
gradient.point1.setXY (dx + gradientWidth * getCoordLength (fillXml->getStringAttribute ("x1", "0%"), 1.0f),
|
|
dy + gradientHeight * getCoordLength (fillXml->getStringAttribute ("y1", "0%"), 1.0f));
|
|
|
|
gradient.point2.setXY (dx + gradientWidth * getCoordLength (fillXml->getStringAttribute ("x2", "100%"), 1.0f),
|
|
dy + gradientHeight * getCoordLength (fillXml->getStringAttribute ("y2", "0%"), 1.0f));
|
|
}
|
|
|
|
if (gradient.point1 == gradient.point2)
|
|
return Colour (gradient.getColour (gradient.getNumColours() - 1));
|
|
}
|
|
|
|
FillType type (gradient);
|
|
|
|
const AffineTransform gradientTransform (parseTransform (fillXml->getStringAttribute ("gradientTransform"))
|
|
.followedBy (transform));
|
|
|
|
if (gradient.isRadial)
|
|
{
|
|
type.transform = gradientTransform;
|
|
}
|
|
else
|
|
{
|
|
// Transform the perpendicular vector into the new coordinate space for the gradient.
|
|
// This vector is now the slope of the linear gradient as it should appear in the new coord space
|
|
const Point<float> perpendicular (Point<float> (gradient.point2.y - gradient.point1.y,
|
|
gradient.point1.x - gradient.point2.x)
|
|
.transformedBy (gradientTransform.withAbsoluteTranslation (0, 0)));
|
|
|
|
const Point<float> newGradPoint1 (gradient.point1.transformedBy (gradientTransform));
|
|
const Point<float> newGradPoint2 (gradient.point2.transformedBy (gradientTransform));
|
|
|
|
// Project the transformed gradient vector onto the transformed slope of the linear
|
|
// gradient as it should appear in the new coordinate space
|
|
const float scale = perpendicular.getDotProduct (newGradPoint2 - newGradPoint1)
|
|
/ perpendicular.getDotProduct (perpendicular);
|
|
|
|
type.gradient->point1 = newGradPoint1;
|
|
type.gradient->point2 = newGradPoint2 - perpendicular * scale;
|
|
}
|
|
|
|
return type;
|
|
}
|
|
|
|
FillType getPathFillType (const Path& path,
|
|
const String& fill,
|
|
const String& fillOpacity,
|
|
const String& overallOpacity,
|
|
const Colour defaultColour) const
|
|
{
|
|
float opacity = 1.0f;
|
|
|
|
if (overallOpacity.isNotEmpty())
|
|
opacity = jlimit (0.0f, 1.0f, overallOpacity.getFloatValue());
|
|
|
|
if (fillOpacity.isNotEmpty())
|
|
opacity *= (jlimit (0.0f, 1.0f, fillOpacity.getFloatValue()));
|
|
|
|
if (fill.startsWithIgnoreCase ("url"))
|
|
{
|
|
const String id (fill.fromFirstOccurrenceOf ("#", false, false)
|
|
.upToLastOccurrenceOf (")", false, false).trim());
|
|
|
|
if (const XmlElement* const fillXml = findElementForId (topLevelXml, id))
|
|
if (fillXml->hasTagNameIgnoringNamespace ("linearGradient")
|
|
|| fillXml->hasTagNameIgnoringNamespace ("radialGradient"))
|
|
return getGradientFillType (fillXml, path, opacity);
|
|
}
|
|
|
|
if (fill.equalsIgnoreCase ("none"))
|
|
return Colours::transparentBlack;
|
|
|
|
int i = 0;
|
|
return parseColour (fill, i, defaultColour).withMultipliedAlpha (opacity);
|
|
}
|
|
|
|
PathStrokeType getStrokeFor (const XmlElement* const xml) const
|
|
{
|
|
const String strokeWidth (getStyleAttribute (xml, "stroke-width"));
|
|
const String cap (getStyleAttribute (xml, "stroke-linecap"));
|
|
const String join (getStyleAttribute (xml, "stroke-linejoin"));
|
|
|
|
//const String mitreLimit (getStyleAttribute (xml, "stroke-miterlimit"));
|
|
//const String dashArray (getStyleAttribute (xml, "stroke-dasharray"));
|
|
//const String dashOffset (getStyleAttribute (xml, "stroke-dashoffset"));
|
|
|
|
PathStrokeType::JointStyle joinStyle = PathStrokeType::mitered;
|
|
PathStrokeType::EndCapStyle capStyle = PathStrokeType::butt;
|
|
|
|
if (join.equalsIgnoreCase ("round"))
|
|
joinStyle = PathStrokeType::curved;
|
|
else if (join.equalsIgnoreCase ("bevel"))
|
|
joinStyle = PathStrokeType::beveled;
|
|
|
|
if (cap.equalsIgnoreCase ("round"))
|
|
capStyle = PathStrokeType::rounded;
|
|
else if (cap.equalsIgnoreCase ("square"))
|
|
capStyle = PathStrokeType::square;
|
|
|
|
float ox = 0.0f, oy = 0.0f;
|
|
float x = getCoordLength (strokeWidth, viewBoxW), y = 0.0f;
|
|
transform.transformPoints (ox, oy, x, y);
|
|
|
|
return PathStrokeType (strokeWidth.isNotEmpty() ? juce_hypot (x - ox, y - oy) : 1.0f,
|
|
joinStyle, capStyle);
|
|
}
|
|
|
|
//==============================================================================
|
|
Drawable* parseText (const XmlElement& xml)
|
|
{
|
|
Array <float> xCoords, yCoords, dxCoords, dyCoords;
|
|
|
|
getCoordList (xCoords, getInheritedAttribute (&xml, "x"), true, true);
|
|
getCoordList (yCoords, getInheritedAttribute (&xml, "y"), true, false);
|
|
getCoordList (dxCoords, getInheritedAttribute (&xml, "dx"), true, true);
|
|
getCoordList (dyCoords, getInheritedAttribute (&xml, "dy"), true, false);
|
|
|
|
|
|
//xxx not done text yet!
|
|
|
|
|
|
forEachXmlChildElement (xml, e)
|
|
{
|
|
if (e->isTextElement())
|
|
{
|
|
const String text (e->getText());
|
|
|
|
Path path;
|
|
Drawable* s = parseShape (*e, path);
|
|
delete s; // xxx not finished!
|
|
}
|
|
else if (e->hasTagNameIgnoringNamespace ("tspan"))
|
|
{
|
|
Drawable* s = parseText (*e);
|
|
delete s; // xxx not finished!
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
//==============================================================================
|
|
void addTransform (const XmlElement& xml)
|
|
{
|
|
transform = parseTransform (xml.getStringAttribute ("transform"))
|
|
.followedBy (transform);
|
|
}
|
|
|
|
//==============================================================================
|
|
bool parseCoord (String::CharPointerType& s, float& value, const bool allowUnits, const bool isX) const
|
|
{
|
|
String number;
|
|
|
|
if (! parseNextNumber (s, number, allowUnits))
|
|
{
|
|
value = 0;
|
|
return false;
|
|
}
|
|
|
|
value = getCoordLength (number, isX ? viewBoxW : viewBoxH);
|
|
return true;
|
|
}
|
|
|
|
bool parseCoords (String::CharPointerType& s, Point<float>& p, const bool allowUnits) const
|
|
{
|
|
return parseCoord (s, p.x, allowUnits, true)
|
|
&& parseCoord (s, p.y, allowUnits, false);
|
|
}
|
|
|
|
bool parseCoordsOrSkip (String::CharPointerType& s, Point<float>& p, const bool allowUnits) const
|
|
{
|
|
const bool b = parseCoords (s, p, allowUnits);
|
|
if (! b)
|
|
++s;
|
|
|
|
return b;
|
|
}
|
|
|
|
float getCoordLength (const String& s, const float sizeForProportions) const
|
|
{
|
|
float n = s.getFloatValue();
|
|
const int len = s.length();
|
|
|
|
if (len > 2)
|
|
{
|
|
const float dpi = 96.0f;
|
|
|
|
const juce_wchar n1 = s [len - 2];
|
|
const juce_wchar n2 = s [len - 1];
|
|
|
|
if (n1 == 'i' && n2 == 'n') n *= dpi;
|
|
else if (n1 == 'm' && n2 == 'm') n *= dpi / 25.4f;
|
|
else if (n1 == 'c' && n2 == 'm') n *= dpi / 2.54f;
|
|
else if (n1 == 'p' && n2 == 'c') n *= 15.0f;
|
|
else if (n2 == '%') n *= 0.01f * sizeForProportions;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
float getCoordLength (const XmlElement& xml, const char* attName, const float sizeForProportions) const
|
|
{
|
|
return getCoordLength (xml.getStringAttribute (attName), sizeForProportions);
|
|
}
|
|
|
|
void getCoordList (Array <float>& coords, const String& list,
|
|
const bool allowUnits, const bool isX) const
|
|
{
|
|
String::CharPointerType text (list.getCharPointer());
|
|
float value;
|
|
|
|
while (parseCoord (text, value, allowUnits, isX))
|
|
coords.add (value);
|
|
}
|
|
|
|
//==============================================================================
|
|
void parseCSSStyle (const XmlElement& xml)
|
|
{
|
|
cssStyleText = xml.getAllSubText() + "\n" + cssStyleText;
|
|
}
|
|
|
|
String getStyleAttribute (const XmlElement* xml, const String& attributeName,
|
|
const String& defaultValue = String::empty) const
|
|
{
|
|
if (xml->hasAttribute (attributeName))
|
|
return xml->getStringAttribute (attributeName, defaultValue);
|
|
|
|
const String styleAtt (xml->getStringAttribute ("style"));
|
|
|
|
if (styleAtt.isNotEmpty())
|
|
{
|
|
const String value (getAttributeFromStyleList (styleAtt, attributeName, String::empty));
|
|
|
|
if (value.isNotEmpty())
|
|
return value;
|
|
}
|
|
else if (xml->hasAttribute ("class"))
|
|
{
|
|
const String className ("." + xml->getStringAttribute ("class"));
|
|
|
|
int index = cssStyleText.indexOfIgnoreCase (className + " ");
|
|
|
|
if (index < 0)
|
|
index = cssStyleText.indexOfIgnoreCase (className + "{");
|
|
|
|
if (index >= 0)
|
|
{
|
|
const int openBracket = cssStyleText.indexOfChar (index, '{');
|
|
|
|
if (openBracket > index)
|
|
{
|
|
const int closeBracket = cssStyleText.indexOfChar (openBracket, '}');
|
|
|
|
if (closeBracket > openBracket)
|
|
{
|
|
const String value (getAttributeFromStyleList (cssStyleText.substring (openBracket + 1, closeBracket), attributeName, defaultValue));
|
|
|
|
if (value.isNotEmpty())
|
|
return value;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
xml = const_cast <XmlElement*> (topLevelXml)->findParentElementOf (xml);
|
|
|
|
if (xml != nullptr)
|
|
return getStyleAttribute (xml, attributeName, defaultValue);
|
|
|
|
return defaultValue;
|
|
}
|
|
|
|
String getInheritedAttribute (const XmlElement* xml, const String& attributeName) const
|
|
{
|
|
if (xml->hasAttribute (attributeName))
|
|
return xml->getStringAttribute (attributeName);
|
|
|
|
xml = const_cast <XmlElement*> (topLevelXml)->findParentElementOf (xml);
|
|
|
|
if (xml != nullptr)
|
|
return getInheritedAttribute (xml, attributeName);
|
|
|
|
return String::empty;
|
|
}
|
|
|
|
//==============================================================================
|
|
static bool isIdentifierChar (const juce_wchar c)
|
|
{
|
|
return CharacterFunctions::isLetter (c) || c == '-';
|
|
}
|
|
|
|
static String getAttributeFromStyleList (const String& list, const String& attributeName, const String& defaultValue)
|
|
{
|
|
int i = 0;
|
|
|
|
for (;;)
|
|
{
|
|
i = list.indexOf (i, attributeName);
|
|
|
|
if (i < 0)
|
|
break;
|
|
|
|
if ((i == 0 || (i > 0 && ! isIdentifierChar (list [i - 1])))
|
|
&& ! isIdentifierChar (list [i + attributeName.length()]))
|
|
{
|
|
i = list.indexOfChar (i, ':');
|
|
|
|
if (i < 0)
|
|
break;
|
|
|
|
int end = list.indexOfChar (i, ';');
|
|
|
|
if (end < 0)
|
|
end = 0x7ffff;
|
|
|
|
return list.substring (i + 1, end).trim();
|
|
}
|
|
|
|
++i;
|
|
}
|
|
|
|
return defaultValue;
|
|
}
|
|
|
|
//==============================================================================
|
|
static bool parseNextNumber (String::CharPointerType& s, String& value, const bool allowUnits)
|
|
{
|
|
while (s.isWhitespace() || *s == ',')
|
|
++s;
|
|
|
|
String::CharPointerType start (s);
|
|
int numChars = 0;
|
|
|
|
if (s.isDigit() || *s == '.' || *s == '-')
|
|
{
|
|
++numChars;
|
|
++s;
|
|
}
|
|
|
|
while (s.isDigit() || *s == '.')
|
|
{
|
|
++numChars;
|
|
++s;
|
|
}
|
|
|
|
if ((*s == 'e' || *s == 'E')
|
|
&& ((s + 1).isDigit() || s[1] == '-' || s[1] == '+'))
|
|
{
|
|
s += 2;
|
|
numChars += 2;
|
|
|
|
while (s.isDigit())
|
|
{
|
|
++numChars;
|
|
++s;
|
|
}
|
|
}
|
|
|
|
if (allowUnits)
|
|
{
|
|
while (s.isLetter())
|
|
{
|
|
++numChars;
|
|
++s;
|
|
}
|
|
}
|
|
|
|
if (numChars == 0)
|
|
return false;
|
|
|
|
value = String (start, (size_t) numChars);
|
|
|
|
while (s.isWhitespace() || *s == ',')
|
|
++s;
|
|
|
|
return true;
|
|
}
|
|
|
|
//==============================================================================
|
|
static Colour parseColour (const String& s, int& index, const Colour defaultColour)
|
|
{
|
|
if (s [index] == '#')
|
|
{
|
|
uint32 hex[6] = { 0 };
|
|
int numChars = 0;
|
|
|
|
for (int i = 6; --i >= 0;)
|
|
{
|
|
const int hexValue = CharacterFunctions::getHexDigitValue (s [++index]);
|
|
|
|
if (hexValue >= 0)
|
|
hex [numChars++] = (uint32) hexValue;
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (numChars <= 3)
|
|
return Colour ((uint8) (hex [0] * 0x11),
|
|
(uint8) (hex [1] * 0x11),
|
|
(uint8) (hex [2] * 0x11));
|
|
|
|
return Colour ((uint8) ((hex [0] << 4) + hex [1]),
|
|
(uint8) ((hex [2] << 4) + hex [3]),
|
|
(uint8) ((hex [4] << 4) + hex [5]));
|
|
}
|
|
|
|
if (s [index] == 'r'
|
|
&& s [index + 1] == 'g'
|
|
&& s [index + 2] == 'b')
|
|
{
|
|
const int openBracket = s.indexOfChar (index, '(');
|
|
const int closeBracket = s.indexOfChar (openBracket, ')');
|
|
|
|
if (openBracket >= 3 && closeBracket > openBracket)
|
|
{
|
|
index = closeBracket;
|
|
|
|
StringArray tokens;
|
|
tokens.addTokens (s.substring (openBracket + 1, closeBracket), ",", "");
|
|
tokens.trim();
|
|
tokens.removeEmptyStrings();
|
|
|
|
if (tokens[0].containsChar ('%'))
|
|
return Colour ((uint8) roundToInt (2.55 * tokens[0].getDoubleValue()),
|
|
(uint8) roundToInt (2.55 * tokens[1].getDoubleValue()),
|
|
(uint8) roundToInt (2.55 * tokens[2].getDoubleValue()));
|
|
else
|
|
return Colour ((uint8) tokens[0].getIntValue(),
|
|
(uint8) tokens[1].getIntValue(),
|
|
(uint8) tokens[2].getIntValue());
|
|
}
|
|
}
|
|
|
|
return Colours::findColourForName (s, defaultColour);
|
|
}
|
|
|
|
static const AffineTransform parseTransform (String t)
|
|
{
|
|
AffineTransform result;
|
|
|
|
while (t.isNotEmpty())
|
|
{
|
|
StringArray tokens;
|
|
tokens.addTokens (t.fromFirstOccurrenceOf ("(", false, false)
|
|
.upToFirstOccurrenceOf (")", false, false),
|
|
", ", String::empty);
|
|
|
|
tokens.removeEmptyStrings (true);
|
|
|
|
float numbers [6];
|
|
|
|
for (int i = 0; i < 6; ++i)
|
|
numbers[i] = tokens[i].getFloatValue();
|
|
|
|
AffineTransform trans;
|
|
|
|
if (t.startsWithIgnoreCase ("matrix"))
|
|
{
|
|
trans = AffineTransform (numbers[0], numbers[2], numbers[4],
|
|
numbers[1], numbers[3], numbers[5]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("translate"))
|
|
{
|
|
jassert (tokens.size() == 2);
|
|
trans = AffineTransform::translation (numbers[0], numbers[1]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("scale"))
|
|
{
|
|
if (tokens.size() == 1)
|
|
trans = AffineTransform::scale (numbers[0]);
|
|
else
|
|
trans = AffineTransform::scale (numbers[0], numbers[1]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("rotate"))
|
|
{
|
|
if (tokens.size() != 3)
|
|
trans = AffineTransform::rotation (numbers[0] / (180.0f / float_Pi));
|
|
else
|
|
trans = AffineTransform::rotation (numbers[0] / (180.0f / float_Pi),
|
|
numbers[1], numbers[2]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("skewX"))
|
|
{
|
|
trans = AffineTransform (1.0f, std::tan (numbers[0] * (float_Pi / 180.0f)), 0.0f,
|
|
0.0f, 1.0f, 0.0f);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("skewY"))
|
|
{
|
|
trans = AffineTransform (1.0f, 0.0f, 0.0f,
|
|
std::tan (numbers[0] * (float_Pi / 180.0f)), 1.0f, 0.0f);
|
|
}
|
|
|
|
result = trans.followedBy (result);
|
|
t = t.fromFirstOccurrenceOf (")", false, false).trimStart();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static void endpointToCentreParameters (const double x1, const double y1,
|
|
const double x2, const double y2,
|
|
const double angle,
|
|
const bool largeArc, const bool sweep,
|
|
double& rx, double& ry,
|
|
double& centreX, double& centreY,
|
|
double& startAngle, double& deltaAngle)
|
|
{
|
|
const double midX = (x1 - x2) * 0.5;
|
|
const double midY = (y1 - y2) * 0.5;
|
|
|
|
const double cosAngle = cos (angle);
|
|
const double sinAngle = sin (angle);
|
|
const double xp = cosAngle * midX + sinAngle * midY;
|
|
const double yp = cosAngle * midY - sinAngle * midX;
|
|
const double xp2 = xp * xp;
|
|
const double yp2 = yp * yp;
|
|
|
|
double rx2 = rx * rx;
|
|
double ry2 = ry * ry;
|
|
|
|
const double s = (xp2 / rx2) + (yp2 / ry2);
|
|
double c;
|
|
|
|
if (s <= 1.0)
|
|
{
|
|
c = std::sqrt (jmax (0.0, ((rx2 * ry2) - (rx2 * yp2) - (ry2 * xp2))
|
|
/ (( rx2 * yp2) + (ry2 * xp2))));
|
|
|
|
if (largeArc == sweep)
|
|
c = -c;
|
|
}
|
|
else
|
|
{
|
|
const double s2 = std::sqrt (s);
|
|
rx *= s2;
|
|
ry *= s2;
|
|
c = 0;
|
|
}
|
|
|
|
const double cpx = ((rx * yp) / ry) * c;
|
|
const double cpy = ((-ry * xp) / rx) * c;
|
|
|
|
centreX = ((x1 + x2) * 0.5) + (cosAngle * cpx) - (sinAngle * cpy);
|
|
centreY = ((y1 + y2) * 0.5) + (sinAngle * cpx) + (cosAngle * cpy);
|
|
|
|
const double ux = (xp - cpx) / rx;
|
|
const double uy = (yp - cpy) / ry;
|
|
const double vx = (-xp - cpx) / rx;
|
|
const double vy = (-yp - cpy) / ry;
|
|
|
|
const double length = juce_hypot (ux, uy);
|
|
|
|
startAngle = acos (jlimit (-1.0, 1.0, ux / length));
|
|
|
|
if (uy < 0)
|
|
startAngle = -startAngle;
|
|
|
|
startAngle += double_Pi * 0.5;
|
|
|
|
deltaAngle = acos (jlimit (-1.0, 1.0, ((ux * vx) + (uy * vy))
|
|
/ (length * juce_hypot (vx, vy))));
|
|
|
|
if ((ux * vy) - (uy * vx) < 0)
|
|
deltaAngle = -deltaAngle;
|
|
|
|
if (sweep)
|
|
{
|
|
if (deltaAngle < 0)
|
|
deltaAngle += double_Pi * 2.0;
|
|
}
|
|
else
|
|
{
|
|
if (deltaAngle > 0)
|
|
deltaAngle -= double_Pi * 2.0;
|
|
}
|
|
|
|
deltaAngle = fmod (deltaAngle, double_Pi * 2.0);
|
|
}
|
|
|
|
static const XmlElement* findElementForId (const XmlElement* const parent, const String& id)
|
|
{
|
|
forEachXmlChildElement (*parent, e)
|
|
{
|
|
if (e->compareAttribute ("id", id))
|
|
return e;
|
|
|
|
if (const XmlElement* const found = findElementForId (e, id))
|
|
return found;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
SVGState& operator= (const SVGState&);
|
|
};
|
|
|
|
|
|
//==============================================================================
|
|
Drawable* Drawable::createFromSVG (const XmlElement& svgDocument)
|
|
{
|
|
SVGState state (&svgDocument);
|
|
return state.parseSVGElement (svgDocument);
|
|
}
|
|
|
|
Path Drawable::parseSVGPath (const String& svgPath)
|
|
{
|
|
SVGState state (nullptr);
|
|
Path p;
|
|
state.parsePathString (p, svgPath);
|
|
return p;
|
|
}
|