1736 lines
58 KiB
C++
1736 lines
58 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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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* topLevel, const File& svgFile = {})
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: originalFile (svgFile), topLevelXml (topLevel, nullptr)
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{
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}
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struct XmlPath
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{
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XmlPath (const XmlElement* e, const XmlPath* p) noexcept : xml (e), parent (p) {}
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const XmlElement& operator*() const noexcept { jassert (xml != nullptr); return *xml; }
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const XmlElement* operator->() const noexcept { return xml; }
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XmlPath getChild (const XmlElement* e) const noexcept { return XmlPath (e, this); }
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template <typename OperationType>
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bool applyOperationToChildWithID (const String& id, OperationType& op) const
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{
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forEachXmlChildElement (*xml, e)
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{
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XmlPath child (e, this);
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if (e->compareAttribute ("id", id)
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&& ! child->hasTagName ("defs"))
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return op (child);
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if (child.applyOperationToChildWithID (id, op))
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return true;
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}
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return false;
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}
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const XmlElement* xml;
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const XmlPath* parent;
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};
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//==============================================================================
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struct UsePathOp
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{
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const SVGState* state;
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Path* targetPath;
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bool operator() (const XmlPath& xmlPath) const
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{
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return state->parsePathElement (xmlPath, *targetPath);
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}
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};
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struct UseTextOp
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{
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const SVGState* state;
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AffineTransform* transform;
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Drawable* target;
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bool operator() (const XmlPath& xmlPath)
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{
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target = state->parseText (xmlPath, true, transform);
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return target != nullptr;
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}
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};
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struct UseImageOp
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{
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const SVGState* state;
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AffineTransform* transform;
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Drawable* target;
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bool operator() (const XmlPath& xmlPath)
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{
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target = state->parseImage (xmlPath, true, transform);
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return target != nullptr;
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}
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};
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struct GetClipPathOp
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{
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SVGState* state;
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Drawable* target;
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bool operator() (const XmlPath& xmlPath)
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{
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return state->applyClipPath (*target, xmlPath);
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}
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};
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struct SetGradientStopsOp
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{
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const SVGState* state;
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ColourGradient* gradient;
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bool operator() (const XmlPath& xml) const
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{
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return state->addGradientStopsIn (*gradient, xml);
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}
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};
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struct GetFillTypeOp
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{
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const SVGState* state;
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const Path* path;
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float opacity;
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FillType fillType;
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bool operator() (const XmlPath& xml)
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{
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if (xml->hasTagNameIgnoringNamespace ("linearGradient")
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|| xml->hasTagNameIgnoringNamespace ("radialGradient"))
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{
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fillType = state->getGradientFillType (xml, *path, opacity);
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return true;
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}
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return false;
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}
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};
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//==============================================================================
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Drawable* parseSVGElement (const XmlPath& xml)
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{
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auto drawable = new DrawableComposite();
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setCommonAttributes (*drawable, xml);
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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.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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Point<float> viewboxXY;
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if (xml->hasAttribute ("viewBox"))
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{
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auto viewBoxAtt = xml->getStringAttribute ("viewBox");
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auto viewParams = viewBoxAtt.getCharPointer();
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Point<float> vwh;
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if (parseCoords (viewParams, viewboxXY, 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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auto placementFlags = parsePlacementFlags (xml->getStringAttribute ("preserveAspectRatio").trim());
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if (placementFlags != 0)
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newState.transform = RectanglePlacement (placementFlags)
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.getTransformToFit (Rectangle<float> (viewboxXY.x, viewboxXY.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 == 0.0f) newState.viewBoxW = newState.width;
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if (viewBoxH == 0.0f) newState.viewBoxH = newState.height;
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}
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newState.parseSubElements (xml, *drawable);
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drawable->setContentArea ({ viewboxXY.x, viewboxXY.y, 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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auto d = pathString.getCharPointer().findEndOfWhitespace();
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Point<float> subpathStart, last, last2, p1, p2, p3;
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juce_wchar currentCommand = 0, previousCommand = 0;
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bool isRelative = true;
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bool carryOn = true;
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while (! d.isEmpty())
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{
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if (CharPointer_ASCII ("MmLlHhVvCcSsQqTtAaZz").indexOf (*d) >= 0)
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{
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currentCommand = d.getAndAdvance();
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isRelative = currentCommand >= 'a';
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}
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switch (currentCommand)
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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 (currentCommand == 'M' || currentCommand == 'm')
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{
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subpathStart = p1;
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path.startNewSubPath (p1);
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currentCommand = 'l';
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}
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else
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path.lineTo (p1);
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last2 = 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 = CharPointer_ASCII ("QqTt").indexOf (previousCommand) >= 0 ? last + (last - last2)
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: p1;
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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 = degreesToRadians (num.getFloatValue());
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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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currentCommand = '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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previousCommand = currentCommand;
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}
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// paths that finish back at their start position often seem to be
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// left without a 'z', so need to be closed explicitly..
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if (path.getCurrentPosition() == subpathStart)
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path.closeSubPath();
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}
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private:
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//==============================================================================
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const File originalFile;
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const XmlPath topLevelXml;
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float width = 512, height = 512, viewBoxW = 0, viewBoxH = 0;
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AffineTransform transform;
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String cssStyleText;
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static bool isNone (const String& s) noexcept
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{
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return s.equalsIgnoreCase ("none");
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}
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static void setCommonAttributes (Drawable& d, const XmlPath& xml)
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{
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auto compID = xml->getStringAttribute ("id");
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d.setName (compID);
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d.setComponentID (compID);
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if (isNone (xml->getStringAttribute ("display")))
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d.setVisible (false);
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}
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//==============================================================================
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void parseSubElements (const XmlPath& xml, DrawableComposite& parentDrawable, const bool shouldParseClip = true)
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{
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forEachXmlChildElement (*xml, e)
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{
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const XmlPath child (xml.getChild (e));
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if (auto* drawable = parseSubElement (child))
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{
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parentDrawable.addChildComponent (drawable);
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if (! isNone (getStyleAttribute (child, "display")))
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drawable->setVisible (true);
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if (shouldParseClip)
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parseClipPath (child, *drawable);
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}
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}
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}
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Drawable* parseSubElement (const XmlPath& xml)
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{
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{
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Path path;
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if (parsePathElement (xml, path))
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return parseShape (xml, path);
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}
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auto tag = xml->getTagNameWithoutNamespace();
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if (tag == "g") return parseGroupElement (xml, true);
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if (tag == "svg") return parseSVGElement (xml);
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if (tag == "text") return parseText (xml, true);
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if (tag == "image") return parseImage (xml, true);
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if (tag == "switch") return parseSwitch (xml);
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if (tag == "a") return parseLinkElement (xml);
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if (tag == "use") return parseUseOther (xml);
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if (tag == "style") parseCSSStyle (xml);
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if (tag == "defs") parseDefs (xml);
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return nullptr;
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}
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bool parsePathElement (const XmlPath& xml, Path& path) const
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{
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auto tag = xml->getTagNameWithoutNamespace();
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if (tag == "path") { parsePath (xml, path); return true; }
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if (tag == "rect") { parseRect (xml, path); return true; }
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if (tag == "circle") { parseCircle (xml, path); return true; }
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if (tag == "ellipse") { parseEllipse (xml, path); return true; }
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if (tag == "line") { parseLine (xml, path); return true; }
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if (tag == "polyline") { parsePolygon (xml, true, path); return true; }
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if (tag == "polygon") { parsePolygon (xml, false, path); return true; }
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if (tag == "use") { return parseUsePath (xml, path); }
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return false;
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}
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DrawableComposite* parseSwitch (const XmlPath& xml)
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{
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if (auto* group = xml->getChildByName ("g"))
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return parseGroupElement (xml.getChild (group), true);
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return nullptr;
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}
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DrawableComposite* parseGroupElement (const XmlPath& xml, bool shouldParseTransform)
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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.parseGroupElement (xml, false);
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}
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auto* drawable = new DrawableComposite();
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setCommonAttributes (*drawable, xml);
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parseSubElements (xml, *drawable);
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drawable->resetContentAreaAndBoundingBoxToFitChildren();
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return drawable;
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}
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DrawableComposite* parseLinkElement (const XmlPath& xml)
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{
|
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return parseGroupElement (xml, true); // TODO: support for making this clickable
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}
|
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|
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//==============================================================================
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void parsePath (const XmlPath& xml, Path& path) const
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{
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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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}
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void parseRect (const XmlPath& xml, Path& rect) const
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{
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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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}
|
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|
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void parseCircle (const XmlPath& xml, Path& circle) const
|
|
{
|
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auto cx = getCoordLength (xml, "cx", viewBoxW);
|
|
auto cy = getCoordLength (xml, "cy", viewBoxH);
|
|
auto radius = getCoordLength (xml, "r", viewBoxW);
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|
|
circle.addEllipse (cx - radius, cy - radius, radius * 2.0f, radius * 2.0f);
|
|
}
|
|
|
|
void parseEllipse (const XmlPath& xml, Path& ellipse) const
|
|
{
|
|
auto cx = getCoordLength (xml, "cx", viewBoxW);
|
|
auto cy = getCoordLength (xml, "cy", viewBoxH);
|
|
auto radiusX = getCoordLength (xml, "rx", viewBoxW);
|
|
auto radiusY = getCoordLength (xml, "ry", viewBoxH);
|
|
|
|
ellipse.addEllipse (cx - radiusX, cy - radiusY, radiusX * 2.0f, radiusY * 2.0f);
|
|
}
|
|
|
|
void parseLine (const XmlPath& xml, Path& line) const
|
|
{
|
|
auto x1 = getCoordLength (xml, "x1", viewBoxW);
|
|
auto y1 = getCoordLength (xml, "y1", viewBoxH);
|
|
auto x2 = getCoordLength (xml, "x2", viewBoxW);
|
|
auto y2 = getCoordLength (xml, "y2", viewBoxH);
|
|
|
|
line.startNewSubPath (x1, y1);
|
|
line.lineTo (x2, y2);
|
|
}
|
|
|
|
void parsePolygon (const XmlPath& xml, const bool isPolyline, Path& path) const
|
|
{
|
|
auto pointsAtt = xml->getStringAttribute ("points");
|
|
auto points = pointsAtt.getCharPointer();
|
|
Point<float> p;
|
|
|
|
if (parseCoords (points, p, true))
|
|
{
|
|
Point<float> first (p), last;
|
|
|
|
path.startNewSubPath (first);
|
|
|
|
while (parseCoords (points, p, true))
|
|
{
|
|
last = p;
|
|
path.lineTo (p);
|
|
}
|
|
|
|
if ((! isPolyline) || first == last)
|
|
path.closeSubPath();
|
|
}
|
|
}
|
|
|
|
static String getLinkedID (const XmlPath& xml)
|
|
{
|
|
auto link = xml->getStringAttribute ("xlink:href");
|
|
|
|
if (link.startsWithChar ('#'))
|
|
return link.substring (1);
|
|
|
|
return {};
|
|
}
|
|
|
|
bool parseUsePath (const XmlPath& xml, Path& path) const
|
|
{
|
|
auto linkedID = getLinkedID (xml);
|
|
|
|
if (linkedID.isNotEmpty())
|
|
{
|
|
UsePathOp op = { this, &path };
|
|
return topLevelXml.applyOperationToChildWithID (linkedID, op);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
Drawable* parseUseOther (const XmlPath& xml) const
|
|
{
|
|
if (auto* drawableText = parseText (xml, false)) return drawableText;
|
|
if (auto* drawableImage = parseImage (xml, false)) return drawableImage;
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static String parseURL (const String& str)
|
|
{
|
|
if (str.startsWithIgnoreCase ("url"))
|
|
return str.fromFirstOccurrenceOf ("#", false, false)
|
|
.upToLastOccurrenceOf (")", false, false).trim();
|
|
|
|
return {};
|
|
}
|
|
|
|
//==============================================================================
|
|
Drawable* parseShape (const XmlPath& xml, Path& path,
|
|
const bool shouldParseTransform = true,
|
|
AffineTransform* additonalTransform = nullptr) const
|
|
{
|
|
if (shouldParseTransform && xml->hasAttribute ("transform"))
|
|
{
|
|
SVGState newState (*this);
|
|
newState.addTransform (xml);
|
|
|
|
return newState.parseShape (xml, path, false, additonalTransform);
|
|
}
|
|
|
|
auto dp = new DrawablePath();
|
|
setCommonAttributes (*dp, xml);
|
|
dp->setFill (Colours::transparentBlack);
|
|
|
|
path.applyTransform (transform);
|
|
|
|
if (additonalTransform != nullptr)
|
|
path.applyTransform (*additonalTransform);
|
|
|
|
dp->setPath (path);
|
|
|
|
dp->setFill (getPathFillType (path, xml, "fill",
|
|
getStyleAttribute (xml, "fill-opacity"),
|
|
getStyleAttribute (xml, "opacity"),
|
|
pathContainsClosedSubPath (path) ? Colours::black
|
|
: Colours::transparentBlack));
|
|
|
|
auto strokeType = getStyleAttribute (xml, "stroke");
|
|
|
|
if (strokeType.isNotEmpty() && ! isNone (strokeType))
|
|
{
|
|
dp->setStrokeFill (getPathFillType (path, xml, "stroke",
|
|
getStyleAttribute (xml, "stroke-opacity"),
|
|
getStyleAttribute (xml, "opacity"),
|
|
Colours::transparentBlack));
|
|
|
|
dp->setStrokeType (getStrokeFor (xml));
|
|
}
|
|
|
|
auto strokeDashArray = getStyleAttribute (xml, "stroke-dasharray");
|
|
|
|
if (strokeDashArray.isNotEmpty())
|
|
parseDashArray (strokeDashArray, *dp);
|
|
|
|
return dp;
|
|
}
|
|
|
|
static bool pathContainsClosedSubPath (const Path& path) noexcept
|
|
{
|
|
for (Path::Iterator iter (path); iter.next();)
|
|
if (iter.elementType == Path::Iterator::closePath)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
void parseDashArray (const String& dashList, DrawablePath& dp) const
|
|
{
|
|
if (dashList.equalsIgnoreCase ("null") || isNone (dashList))
|
|
return;
|
|
|
|
Array<float> dashLengths;
|
|
|
|
for (auto t = dashList.getCharPointer();;)
|
|
{
|
|
float value;
|
|
if (! parseCoord (t, value, true, true))
|
|
break;
|
|
|
|
dashLengths.add (value);
|
|
|
|
t = t.findEndOfWhitespace();
|
|
|
|
if (*t == ',')
|
|
++t;
|
|
}
|
|
|
|
if (dashLengths.size() > 0)
|
|
{
|
|
auto* dashes = dashLengths.getRawDataPointer();
|
|
|
|
for (int i = 0; i < dashLengths.size(); ++i)
|
|
{
|
|
if (dashes[i] <= 0) // SVG uses zero-length dashes to mean a dotted line
|
|
{
|
|
if (dashLengths.size() == 1)
|
|
return;
|
|
|
|
const float nonZeroLength = 0.001f;
|
|
dashes[i] = nonZeroLength;
|
|
|
|
const int pairedIndex = i ^ 1;
|
|
|
|
if (isPositiveAndBelow (pairedIndex, dashLengths.size())
|
|
&& dashes[pairedIndex] > nonZeroLength)
|
|
dashes[pairedIndex] -= nonZeroLength;
|
|
}
|
|
}
|
|
|
|
dp.setDashLengths (dashLengths);
|
|
}
|
|
}
|
|
|
|
bool parseClipPath (const XmlPath& xml, Drawable& d)
|
|
{
|
|
const String clipPath (getStyleAttribute (xml, "clip-path"));
|
|
|
|
if (clipPath.isNotEmpty())
|
|
{
|
|
auto urlID = parseURL (clipPath);
|
|
|
|
if (urlID.isNotEmpty())
|
|
{
|
|
GetClipPathOp op = { this, &d };
|
|
return topLevelXml.applyOperationToChildWithID (urlID, op);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool applyClipPath (Drawable& target, const XmlPath& xmlPath)
|
|
{
|
|
if (xmlPath->hasTagNameIgnoringNamespace ("clipPath"))
|
|
{
|
|
std::unique_ptr<DrawableComposite> drawableClipPath (new DrawableComposite());
|
|
|
|
parseSubElements (xmlPath, *drawableClipPath, false);
|
|
|
|
if (drawableClipPath->getNumChildComponents() > 0)
|
|
{
|
|
setCommonAttributes (*drawableClipPath, xmlPath);
|
|
target.setClipPath (drawableClipPath.release());
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool addGradientStopsIn (ColourGradient& cg, const XmlPath& fillXml) const
|
|
{
|
|
bool result = false;
|
|
|
|
if (fillXml.xml != nullptr)
|
|
{
|
|
forEachXmlChildElementWithTagName (*fillXml, e, "stop")
|
|
{
|
|
auto col = parseColour (fillXml.getChild (e), "stop-color", Colours::black);
|
|
|
|
auto opacity = getStyleAttribute (fillXml.getChild (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);
|
|
result = true;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
FillType getGradientFillType (const XmlPath& fillXml,
|
|
const Path& path,
|
|
const float opacity) const
|
|
{
|
|
ColourGradient gradient;
|
|
|
|
{
|
|
auto linkedID = getLinkedID (fillXml);
|
|
|
|
if (linkedID.isNotEmpty())
|
|
{
|
|
SetGradientStopsOp op = { this, &gradient, };
|
|
topLevelXml.applyOperationToChildWithID (linkedID, op);
|
|
}
|
|
}
|
|
|
|
addGradientStopsIn (gradient, fillXml);
|
|
|
|
if (int numColours = gradient.getNumColours())
|
|
{
|
|
if (gradient.getColourPosition (0) > 0)
|
|
gradient.addColour (0.0, gradient.getColour (0));
|
|
|
|
if (gradient.getColourPosition (numColours - 1) < 1.0)
|
|
gradient.addColour (1.0, gradient.getColour (numColours - 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)
|
|
{
|
|
auto 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));
|
|
|
|
auto 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);
|
|
|
|
auto gradientTransform = parseTransform (fillXml->getStringAttribute ("gradientTransform"));
|
|
|
|
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
|
|
auto perpendicular = Point<float> (gradient.point2.y - gradient.point1.y,
|
|
gradient.point1.x - gradient.point2.x)
|
|
.transformedBy (gradientTransform.withAbsoluteTranslation (0, 0));
|
|
|
|
auto newGradPoint1 = gradient.point1.transformedBy (gradientTransform);
|
|
auto 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 XmlPath& xml,
|
|
StringRef fillAttribute,
|
|
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()));
|
|
|
|
String fill (getStyleAttribute (xml, fillAttribute));
|
|
String urlID = parseURL (fill);
|
|
|
|
if (urlID.isNotEmpty())
|
|
{
|
|
GetFillTypeOp op = { this, &path, opacity, FillType() };
|
|
|
|
if (topLevelXml.applyOperationToChildWithID (urlID, op))
|
|
return op.fillType;
|
|
}
|
|
|
|
if (isNone (fill))
|
|
return Colours::transparentBlack;
|
|
|
|
return parseColour (xml, fillAttribute, defaultColour).withMultipliedAlpha (opacity);
|
|
}
|
|
|
|
static PathStrokeType::JointStyle getJointStyle (const String& join) noexcept
|
|
{
|
|
if (join.equalsIgnoreCase ("round")) return PathStrokeType::curved;
|
|
if (join.equalsIgnoreCase ("bevel")) return PathStrokeType::beveled;
|
|
|
|
return PathStrokeType::mitered;
|
|
}
|
|
|
|
static PathStrokeType::EndCapStyle getEndCapStyle (const String& cap) noexcept
|
|
{
|
|
if (cap.equalsIgnoreCase ("round")) return PathStrokeType::rounded;
|
|
if (cap.equalsIgnoreCase ("square")) return PathStrokeType::square;
|
|
|
|
return PathStrokeType::butt;
|
|
}
|
|
|
|
float getStrokeWidth (const String& strokeWidth) const noexcept
|
|
{
|
|
return transform.getScaleFactor() * getCoordLength (strokeWidth, viewBoxW);
|
|
}
|
|
|
|
PathStrokeType getStrokeFor (const XmlPath& xml) const
|
|
{
|
|
return PathStrokeType (getStrokeWidth (getStyleAttribute (xml, "stroke-width", "1")),
|
|
getJointStyle (getStyleAttribute (xml, "stroke-linejoin")),
|
|
getEndCapStyle (getStyleAttribute (xml, "stroke-linecap")));
|
|
}
|
|
|
|
//==============================================================================
|
|
|
|
Drawable* useText (const XmlPath& xml) const
|
|
{
|
|
auto translation = AffineTransform::translation ((float) xml->getDoubleAttribute ("x", 0.0),
|
|
(float) xml->getDoubleAttribute ("y", 0.0));
|
|
|
|
UseTextOp op = { this, &translation, nullptr };
|
|
|
|
auto linkedID = getLinkedID (xml);
|
|
|
|
if (linkedID.isNotEmpty())
|
|
topLevelXml.applyOperationToChildWithID (linkedID, op);
|
|
|
|
return op.target;
|
|
}
|
|
|
|
Drawable* parseText (const XmlPath& xml, bool shouldParseTransform,
|
|
AffineTransform* additonalTransform = nullptr) const
|
|
{
|
|
if (shouldParseTransform && xml->hasAttribute ("transform"))
|
|
{
|
|
SVGState newState (*this);
|
|
newState.addTransform (xml);
|
|
|
|
return newState.parseText (xml, false, additonalTransform);
|
|
}
|
|
|
|
if (xml->hasTagName ("use"))
|
|
return useText (xml);
|
|
|
|
if (! xml->hasTagName ("text"))
|
|
return nullptr;
|
|
|
|
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);
|
|
|
|
auto font = getFont (xml);
|
|
auto anchorStr = getStyleAttribute (xml, "text-anchor");
|
|
|
|
auto dc = new DrawableComposite();
|
|
setCommonAttributes (*dc, xml);
|
|
|
|
forEachXmlChildElement (*xml, e)
|
|
{
|
|
if (e->isTextElement())
|
|
{
|
|
auto text = e->getText().trim();
|
|
|
|
auto dt = new DrawableText();
|
|
dc->addAndMakeVisible (dt);
|
|
|
|
dt->setText (text);
|
|
dt->setFont (font, true);
|
|
|
|
if (additonalTransform != nullptr)
|
|
dt->setTransform (transform.followedBy (*additonalTransform));
|
|
else
|
|
dt->setTransform (transform);
|
|
|
|
dt->setColour (parseColour (xml, "fill", Colours::black)
|
|
.withMultipliedAlpha (getStyleAttribute (xml, "fill-opacity", "1").getFloatValue()));
|
|
|
|
Rectangle<float> bounds (xCoords[0], yCoords[0] - font.getAscent(),
|
|
font.getStringWidthFloat (text), font.getHeight());
|
|
|
|
if (anchorStr == "middle") bounds.setX (bounds.getX() - bounds.getWidth() / 2.0f);
|
|
else if (anchorStr == "end") bounds.setX (bounds.getX() - bounds.getWidth());
|
|
|
|
dt->setBoundingBox (bounds);
|
|
}
|
|
else if (e->hasTagNameIgnoringNamespace ("tspan"))
|
|
{
|
|
dc->addAndMakeVisible (parseText (xml.getChild (e), true));
|
|
}
|
|
}
|
|
|
|
return dc;
|
|
}
|
|
|
|
Font getFont (const XmlPath& xml) const
|
|
{
|
|
Font f;
|
|
auto family = getStyleAttribute (xml, "font-family").unquoted();
|
|
|
|
if (family.isNotEmpty())
|
|
f.setTypefaceName (family);
|
|
|
|
if (getStyleAttribute (xml, "font-style").containsIgnoreCase ("italic"))
|
|
f.setItalic (true);
|
|
|
|
if (getStyleAttribute (xml, "font-weight").containsIgnoreCase ("bold"))
|
|
f.setBold (true);
|
|
|
|
return f.withPointHeight (getCoordLength (getStyleAttribute (xml, "font-size", "15"), 1.0f));
|
|
}
|
|
|
|
//==============================================================================
|
|
Drawable* useImage (const XmlPath& xml) const
|
|
{
|
|
auto translation = AffineTransform::translation ((float) xml->getDoubleAttribute ("x", 0.0),
|
|
(float) xml->getDoubleAttribute ("y", 0.0));
|
|
|
|
UseImageOp op = { this, &translation, nullptr };
|
|
|
|
auto linkedID = getLinkedID (xml);
|
|
|
|
if (linkedID.isNotEmpty())
|
|
topLevelXml.applyOperationToChildWithID (linkedID, op);
|
|
|
|
return op.target;
|
|
}
|
|
|
|
Drawable* parseImage (const XmlPath& xml, bool shouldParseTransform,
|
|
AffineTransform* additionalTransform = nullptr) const
|
|
{
|
|
if (shouldParseTransform && xml->hasAttribute ("transform"))
|
|
{
|
|
SVGState newState (*this);
|
|
newState.addTransform (xml);
|
|
|
|
return newState.parseImage (xml, false, additionalTransform);
|
|
}
|
|
|
|
if (xml->hasTagName ("use"))
|
|
return useImage (xml);
|
|
|
|
if (! xml->hasTagName ("image"))
|
|
return nullptr;
|
|
|
|
auto link = xml->getStringAttribute ("xlink:href");
|
|
|
|
std::unique_ptr<InputStream> inputStream;
|
|
MemoryOutputStream imageStream;
|
|
|
|
if (link.startsWith ("data:"))
|
|
{
|
|
const auto indexOfComma = link.indexOf (",");
|
|
auto format = link.substring (5, indexOfComma).trim();
|
|
auto indexOfSemi = format.indexOf (";");
|
|
|
|
if (format.substring (indexOfSemi + 1).trim().equalsIgnoreCase ("base64"))
|
|
{
|
|
auto mime = format.substring (0, indexOfSemi).trim();
|
|
|
|
if (mime.equalsIgnoreCase ("image/png") || mime.equalsIgnoreCase ("image/jpeg"))
|
|
{
|
|
auto base64text = link.substring (indexOfComma + 1).removeCharacters ("\t\n\r ");
|
|
|
|
if (Base64::convertFromBase64 (imageStream, base64text))
|
|
inputStream.reset (new MemoryInputStream (imageStream.getData(), imageStream.getDataSize(), false));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
auto linkedFile = originalFile.getParentDirectory().getChildFile (link);
|
|
|
|
if (linkedFile.existsAsFile())
|
|
inputStream.reset (linkedFile.createInputStream());
|
|
}
|
|
|
|
if (inputStream != nullptr)
|
|
{
|
|
auto image = ImageFileFormat::loadFrom (*inputStream);
|
|
|
|
if (image.isValid())
|
|
{
|
|
auto* di = new DrawableImage();
|
|
|
|
setCommonAttributes (*di, xml);
|
|
|
|
Rectangle<float> imageBounds ((float) xml->getDoubleAttribute ("x", 0.0), (float) xml->getDoubleAttribute ("y", 0.0),
|
|
(float) xml->getDoubleAttribute ("width", image.getWidth()), (float) xml->getDoubleAttribute ("height", image.getHeight()));
|
|
|
|
di->setImage (image.rescaled ((int) imageBounds.getWidth(), (int) imageBounds.getHeight()));
|
|
|
|
di->setTransformToFit (imageBounds, RectanglePlacement (parsePlacementFlags (xml->getStringAttribute ("preserveAspectRatio").trim())));
|
|
|
|
if (additionalTransform != nullptr)
|
|
di->setTransform (di->getTransform().followedBy (transform).followedBy (*additionalTransform));
|
|
else
|
|
di->setTransform (di->getTransform().followedBy (transform));
|
|
|
|
return di;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
//==============================================================================
|
|
void addTransform (const XmlPath& 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
|
|
{
|
|
if (parseCoords (s, p, allowUnits))
|
|
return true;
|
|
|
|
if (! s.isEmpty()) ++s;
|
|
return false;
|
|
}
|
|
|
|
float getCoordLength (const String& s, const float sizeForProportions) const noexcept
|
|
{
|
|
float n = s.getFloatValue();
|
|
const int len = s.length();
|
|
|
|
if (len > 2)
|
|
{
|
|
auto dpi = 96.0f;
|
|
|
|
auto n1 = s[len - 2];
|
|
auto 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 XmlPath& xml, const char* attName, const float sizeForProportions) const noexcept
|
|
{
|
|
return getCoordLength (xml->getStringAttribute (attName), sizeForProportions);
|
|
}
|
|
|
|
void getCoordList (Array<float>& coords, const String& list, bool allowUnits, const bool isX) const
|
|
{
|
|
auto text = list.getCharPointer();
|
|
float value;
|
|
|
|
while (parseCoord (text, value, allowUnits, isX))
|
|
coords.add (value);
|
|
}
|
|
|
|
//==============================================================================
|
|
void parseCSSStyle (const XmlPath& xml)
|
|
{
|
|
cssStyleText = xml->getAllSubText() + "\n" + cssStyleText;
|
|
}
|
|
|
|
void parseDefs (const XmlPath& xml)
|
|
{
|
|
if (auto* style = xml->getChildByName ("style"))
|
|
parseCSSStyle (xml.getChild (style));
|
|
}
|
|
|
|
static String::CharPointerType findStyleItem (String::CharPointerType source, String::CharPointerType name)
|
|
{
|
|
auto nameLength = (int) name.length();
|
|
|
|
while (! source.isEmpty())
|
|
{
|
|
if (source.getAndAdvance() == '.'
|
|
&& CharacterFunctions::compareIgnoreCaseUpTo (source, name, nameLength) == 0)
|
|
{
|
|
auto endOfName = (source + nameLength).findEndOfWhitespace();
|
|
|
|
if (*endOfName == '{')
|
|
return endOfName;
|
|
|
|
if (*endOfName == ',')
|
|
return CharacterFunctions::find (endOfName, (juce_wchar) '{');
|
|
}
|
|
}
|
|
|
|
return source;
|
|
}
|
|
|
|
String getStyleAttribute (const XmlPath& xml, StringRef attributeName, const String& defaultValue = String()) const
|
|
{
|
|
if (xml->hasAttribute (attributeName))
|
|
return xml->getStringAttribute (attributeName, defaultValue);
|
|
|
|
auto styleAtt = xml->getStringAttribute ("style");
|
|
|
|
if (styleAtt.isNotEmpty())
|
|
{
|
|
auto value = getAttributeFromStyleList (styleAtt, attributeName, {});
|
|
|
|
if (value.isNotEmpty())
|
|
return value;
|
|
}
|
|
else if (xml->hasAttribute ("class"))
|
|
{
|
|
for (auto i = cssStyleText.getCharPointer();;)
|
|
{
|
|
auto openBrace = findStyleItem (i, xml->getStringAttribute ("class").getCharPointer());
|
|
|
|
if (openBrace.isEmpty())
|
|
break;
|
|
|
|
auto closeBrace = CharacterFunctions::find (openBrace, (juce_wchar) '}');
|
|
|
|
if (closeBrace.isEmpty())
|
|
break;
|
|
|
|
auto value = getAttributeFromStyleList (String (openBrace + 1, closeBrace),
|
|
attributeName, defaultValue);
|
|
if (value.isNotEmpty())
|
|
return value;
|
|
|
|
i = closeBrace + 1;
|
|
}
|
|
}
|
|
|
|
if (xml.parent != nullptr)
|
|
return getStyleAttribute (*xml.parent, attributeName, defaultValue);
|
|
|
|
return defaultValue;
|
|
}
|
|
|
|
String getInheritedAttribute (const XmlPath& xml, StringRef attributeName) const
|
|
{
|
|
if (xml->hasAttribute (attributeName))
|
|
return xml->getStringAttribute (attributeName);
|
|
|
|
if (xml.parent != nullptr)
|
|
return getInheritedAttribute (*xml.parent, attributeName);
|
|
|
|
return {};
|
|
}
|
|
|
|
static int parsePlacementFlags (const String& align) noexcept
|
|
{
|
|
if (align.isEmpty())
|
|
return 0;
|
|
|
|
if (isNone (align))
|
|
return RectanglePlacement::stretchToFit;
|
|
|
|
return (align.containsIgnoreCase ("slice") ? RectanglePlacement::fillDestination : 0)
|
|
| (align.containsIgnoreCase ("xMin") ? RectanglePlacement::xLeft
|
|
: (align.containsIgnoreCase ("xMax") ? RectanglePlacement::xRight
|
|
: RectanglePlacement::xMid))
|
|
| (align.containsIgnoreCase ("yMin") ? RectanglePlacement::yTop
|
|
: (align.containsIgnoreCase ("yMax") ? RectanglePlacement::yBottom
|
|
: RectanglePlacement::yMid));
|
|
}
|
|
|
|
//==============================================================================
|
|
static bool isIdentifierChar (juce_wchar c)
|
|
{
|
|
return CharacterFunctions::isLetter (c) || c == '-';
|
|
}
|
|
|
|
static String getAttributeFromStyleList (const String& list, StringRef 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 isStartOfNumber (juce_wchar c) noexcept
|
|
{
|
|
return CharacterFunctions::isDigit (c) || c == '-' || c == '+';
|
|
}
|
|
|
|
static bool parseNextNumber (String::CharPointerType& text, String& value, const bool allowUnits)
|
|
{
|
|
auto s = text;
|
|
|
|
while (s.isWhitespace() || *s == ',')
|
|
++s;
|
|
|
|
auto start = s;
|
|
|
|
if (isStartOfNumber (*s))
|
|
++s;
|
|
|
|
while (s.isDigit())
|
|
++s;
|
|
|
|
if (*s == '.')
|
|
{
|
|
++s;
|
|
|
|
while (s.isDigit())
|
|
++s;
|
|
}
|
|
|
|
if ((*s == 'e' || *s == 'E') && isStartOfNumber (s[1]))
|
|
{
|
|
s += 2;
|
|
|
|
while (s.isDigit())
|
|
++s;
|
|
}
|
|
|
|
if (allowUnits)
|
|
while (s.isLetter())
|
|
++s;
|
|
|
|
if (s == start)
|
|
{
|
|
text = s;
|
|
return false;
|
|
}
|
|
|
|
value = String (start, s);
|
|
|
|
while (s.isWhitespace() || *s == ',')
|
|
++s;
|
|
|
|
text = s;
|
|
return true;
|
|
}
|
|
|
|
//==============================================================================
|
|
Colour parseColour (const XmlPath& xml, StringRef attributeName, const Colour defaultColour) const
|
|
{
|
|
auto text = getStyleAttribute (xml, attributeName);
|
|
|
|
if (text.startsWithChar ('#'))
|
|
{
|
|
uint32 hex[6] = { 0 };
|
|
int numChars = 0;
|
|
auto s = text.getCharPointer();
|
|
|
|
while (numChars < 6)
|
|
{
|
|
auto hexValue = CharacterFunctions::getHexDigitValue (*++s);
|
|
|
|
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 (text.startsWith ("rgb"))
|
|
{
|
|
auto openBracket = text.indexOfChar ('(');
|
|
auto closeBracket = text.indexOfChar (openBracket, ')');
|
|
|
|
if (openBracket >= 3 && closeBracket > openBracket)
|
|
{
|
|
StringArray tokens;
|
|
tokens.addTokens (text.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()));
|
|
|
|
return Colour ((uint8) tokens[0].getIntValue(),
|
|
(uint8) tokens[1].getIntValue(),
|
|
(uint8) tokens[2].getIntValue());
|
|
}
|
|
}
|
|
|
|
if (text == "inherit")
|
|
{
|
|
for (const XmlPath* p = xml.parent; p != nullptr; p = p->parent)
|
|
if (getStyleAttribute (*p, attributeName).isNotEmpty())
|
|
return parseColour (*p, attributeName, defaultColour);
|
|
}
|
|
|
|
return Colours::findColourForName (text, defaultColour);
|
|
}
|
|
|
|
static AffineTransform parseTransform (String t)
|
|
{
|
|
AffineTransform result;
|
|
|
|
while (t.isNotEmpty())
|
|
{
|
|
StringArray tokens;
|
|
tokens.addTokens (t.fromFirstOccurrenceOf ("(", false, false)
|
|
.upToFirstOccurrenceOf (")", false, false),
|
|
", ", "");
|
|
|
|
tokens.removeEmptyStrings (true);
|
|
|
|
float numbers[6];
|
|
|
|
for (int i = 0; i < numElementsInArray (numbers); ++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"))
|
|
{
|
|
trans = AffineTransform::translation (numbers[0], numbers[1]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("scale"))
|
|
{
|
|
trans = AffineTransform::scale (numbers[0], numbers[tokens.size() > 1 ? 1 : 0]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("rotate"))
|
|
{
|
|
trans = AffineTransform::rotation (degreesToRadians (numbers[0]), numbers[1], numbers[2]);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("skewX"))
|
|
{
|
|
trans = AffineTransform::shear (std::tan (degreesToRadians (numbers[0])), 0.0f);
|
|
}
|
|
else if (t.startsWithIgnoreCase ("skewY"))
|
|
{
|
|
trans = AffineTransform::shear (0.0f, std::tan (degreesToRadians (numbers[0])));
|
|
}
|
|
|
|
result = trans.followedBy (result);
|
|
t = t.fromFirstOccurrenceOf (")", false, false).trimStart();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static void endpointToCentreParameters (double x1, double y1,
|
|
double x2, double y2,
|
|
double angle,
|
|
bool largeArc, bool sweep,
|
|
double& rx, double& ry,
|
|
double& centreX, double& centreY,
|
|
double& startAngle, double& deltaAngle) noexcept
|
|
{
|
|
const double midX = (x1 - x2) * 0.5;
|
|
const double midY = (y1 - y2) * 0.5;
|
|
|
|
const double cosAngle = std::cos (angle);
|
|
const double sinAngle = std::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 += MathConstants<double>::halfPi;
|
|
|
|
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 += MathConstants<double>::twoPi;
|
|
}
|
|
else
|
|
{
|
|
if (deltaAngle > 0)
|
|
deltaAngle -= MathConstants<double>::twoPi;
|
|
}
|
|
|
|
deltaAngle = fmod (deltaAngle, MathConstants<double>::twoPi);
|
|
}
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|
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SVGState& operator= (const SVGState&) = delete;
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|
};
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|
|
|
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|
//==============================================================================
|
|
Drawable* Drawable::createFromSVG (const XmlElement& svgDocument)
|
|
{
|
|
if (! svgDocument.hasTagNameIgnoringNamespace ("svg"))
|
|
return nullptr;
|
|
|
|
SVGState state (&svgDocument);
|
|
return state.parseSVGElement (SVGState::XmlPath (&svgDocument, nullptr));
|
|
}
|
|
|
|
Drawable* Drawable::createFromSVGFile (const File& svgFile)
|
|
{
|
|
XmlDocument doc (svgFile);
|
|
std::unique_ptr<XmlElement> outer (doc.getDocumentElement (true));
|
|
|
|
if (outer != nullptr && outer->hasTagName ("svg"))
|
|
{
|
|
std::unique_ptr<XmlElement> svgDocument (doc.getDocumentElement());
|
|
|
|
if (svgDocument != nullptr)
|
|
{
|
|
SVGState state (svgDocument.get(), svgFile);
|
|
return state.parseSVGElement (SVGState::XmlPath (svgDocument.get(), nullptr));
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
Path Drawable::parseSVGPath (const String& svgPath)
|
|
{
|
|
SVGState state (nullptr);
|
|
Path p;
|
|
state.parsePathString (p, svgPath);
|
|
return p;
|
|
}
|
|
|
|
} // namespace juce
|