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author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-11-06 15:56:40 -0600 |
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committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-11-06 15:56:40 -0600 |
commit | e16866e072f94410321d70daedbcb855ea878cac (patch) | |
tree | ee3f52eabde7da1a0e6ca845fb9c2813cf1558cf /tdecore/svgicons/ksvgiconengine.cpp | |
parent | a58c20c1a7593631a1b50213c805507ebc16adaf (diff) | |
download | tdelibs-e16866e072f94410321d70daedbcb855ea878cac.tar.gz tdelibs-e16866e072f94410321d70daedbcb855ea878cac.zip |
Actually move the kde files that were renamed in the last commit
Diffstat (limited to 'tdecore/svgicons/ksvgiconengine.cpp')
-rw-r--r-- | tdecore/svgicons/ksvgiconengine.cpp | 692 |
1 files changed, 692 insertions, 0 deletions
diff --git a/tdecore/svgicons/ksvgiconengine.cpp b/tdecore/svgicons/ksvgiconengine.cpp new file mode 100644 index 000000000..85830126b --- /dev/null +++ b/tdecore/svgicons/ksvgiconengine.cpp @@ -0,0 +1,692 @@ +/* + Copyright (C) 2002 Nikolas Zimmermann <wildfox@kde.org> + This file is part of the KDE project + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#include <tqdom.h> +#include <tqfile.h> +#include <tqcolor.h> +#include <tqimage.h> +#include <tqwmatrix.h> +#include <tqregexp.h> + +#include <kmdcodec.h> + +#include <zlib.h> + +#include "ksvgiconpainter.h" +#include "ksvgiconengine.h" + +class KSVGIconEngineHelper +{ +public: + KSVGIconEngineHelper(KSVGIconEngine *engine) + { + m_engine = engine; + } + + ~KSVGIconEngineHelper() + { + } + + double toPixel(const TQString &s, bool hmode) + { + return m_engine->painter()->toPixel(s, hmode); + } + + ArtGradientStop *parseGradientStops(TQDomElement element, int &offsets) + { + if (!element.hasChildNodes()) + return 0; + + TQValueList<ArtGradientStop> stopList; + + float oldOffset = -1, newOffset = -1; + for(TQDomNode node = element.firstChild(); !node.isNull(); node = node.nextSibling()) + { + TQDomElement element = node.toElement(); + + oldOffset = newOffset; + TQString temp = element.attribute("offset"); + + if(temp.contains("%")) + { + temp = temp.left(temp.length() - 1); + newOffset = temp.toFloat() / 100.0; + } + else + newOffset = temp.toFloat(); + + // Spec skip double offset specifications + if(oldOffset == newOffset) + continue; + + offsets++; + stopList.append(ArtGradientStop()); + + ArtGradientStop &stop = stopList.last(); + + stop.offset = newOffset; + + TQString parseOpacity; + TQString parseColor; + + if(element.hasAttribute("stop-opacity")) + parseOpacity = element.attribute("stop-opacity"); + + if(element.hasAttribute("stop-color")) + parseColor = element.attribute("stop-color"); + + if(parseOpacity.isEmpty() || parseColor.isEmpty()) + { + TQString style = element.attribute("style"); + + TQStringList substyles = TQStringList::split(';', style); + for(TQStringList::Iterator it = substyles.begin(); it != substyles.end(); ++it) + { + TQStringList substyle = TQStringList::split(':', (*it)); + TQString command = substyle[0]; + TQString params = substyle[1]; + command = command.stripWhiteSpace(); + params = params.stripWhiteSpace(); + + if(command == "stop-color") + { + parseColor = params; + + if(!parseOpacity.isEmpty()) + break; + } + else if(command == "stop-opacity") + { + parseOpacity = params; + + if(!parseColor.isEmpty()) + break; + } + } + } + + // Parse color using KSVGIconPainter (which uses Qt) + // Supports all svg-needed color formats + TQColor qStopColor = m_engine->painter()->parseColor(parseColor); + + // Convert in a libart suitable form + TQ_UINT32 stopColor = m_engine->painter()->toArtColor(qStopColor); + + int opacity = m_engine->painter()->parseOpacity(parseOpacity); + + TQ_UINT32 rgba = (stopColor << 8) | opacity; + TQ_UINT32 r, g, b, a; + + // Convert from separated to premultiplied alpha + a = rgba & 0xff; + r = (rgba >> 24) * a + 0x80; + r = (r + (r >> 8)) >> 8; + g = ((rgba >> 16) & 0xff) * a + 0x80; + g = (g + (g >> 8)) >> 8; + b = ((rgba >> 8) & 0xff) * a + 0x80; + b = (b + (b >> 8)) >> 8; + + stop.color[0] = ART_PIX_MAX_FROM_8(r); + stop.color[1] = ART_PIX_MAX_FROM_8(g); + stop.color[2] = ART_PIX_MAX_FROM_8(b); + stop.color[3] = ART_PIX_MAX_FROM_8(a); + } + + if (stopList.isEmpty()) + return 0; + + ArtGradientStop *stops = new ArtGradientStop[stopList.count()]; + + TQValueList<ArtGradientStop>::iterator it = stopList.begin(); + TQValueList<ArtGradientStop>::iterator end = stopList.end(); + + for (int i = 0; it != end; ++i, ++it) + stops[i] = *it; + + return stops; + } + + TQPointArray parsePoints(TQString points) + { + if(points.isEmpty()) + return TQPointArray(); + + points = points.simplifyWhiteSpace(); + + if(points.contains(",,") || points.contains(", ,")) + return TQPointArray(); + + points.replace(',', ' '); + points.replace('\r', TQString()); + points.replace('\n', TQString()); + + points = points.simplifyWhiteSpace(); + + TQStringList pointList = TQStringList::split(' ', points); + + TQPointArray array(pointList.count() / 2); + int i = 0; + + for(TQStringList::Iterator it = pointList.begin(); it != pointList.end(); it++) + { + float x = (*(it++)).toFloat(); + float y = (*(it)).toFloat(); + + array.setPoint(i, static_cast<int>(x), static_cast<int>(y)); + i++; + } + + return array; + } + + void parseTransform(const TQString &transform) + { + // Combine new and old matrix + TQWMatrix matrix = m_engine->painter()->parseTransform(transform); + + TQWMatrix *current = m_engine->painter()->tqworldMatrix(); +#ifdef USE_QT4 +printf("[FIXME] *current = matrix * *current locks up under Qt4; bypassing for now\n\r"); +#else // USE_QT4 + *current = matrix * *current; +#endif // USE_QT4 + } + + void parseCommonAttributes(TQDomNode &node) + { + // Set important default attributes + m_engine->painter()->setFillColor("black"); + m_engine->painter()->setStrokeColor("none"); + m_engine->painter()->setStrokeDashArray(""); + m_engine->painter()->setStrokeWidth(1); + m_engine->painter()->setJoinStyle(""); + m_engine->painter()->setCapStyle(""); + // m_engine->painter()->setFillOpacity(255, true); + // m_engine->painter()->setStrokeOpacity(255, true); + + // Collect parent node's attributes + TQPtrList<TQDomNamedNodeMap> applyList; + applyList.setAutoDelete(true); + + TQDomNode tqshape = node.parentNode(); + for(; !tqshape.isNull() ; tqshape = tqshape.parentNode()) + applyList.prepend(new TQDomNamedNodeMap(tqshape.attributes())); + + // Apply parent attributes + for(TQDomNamedNodeMap *map = applyList.first(); map != 0; map = applyList.next()) + { + TQDomNamedNodeMap attr = *map; + + for(unsigned int i = 0; i < attr.count(); i++) + { + TQString name, value; + + name = attr.item(i).nodeName().lower(); + value = attr.item(i).nodeValue(); + + if(name == "transform") + parseTransform(value); + else if(name == "style") + parseStyle(value); + else + parsePA(name, value); + } + } + + // Apply local attributes + TQDomNamedNodeMap attr = node.attributes(); + + for(unsigned int i = 0; i < attr.count(); i++) + { + TQDomNode current = attr.item(i); + + if(current.nodeName().lower() == "transform") + parseTransform(current.nodeValue()); + else if(current.nodeName().lower() == "style") + parseStyle(current.nodeValue()); + else + parsePA(current.nodeName().lower(), current.nodeValue()); + } + } + + bool handleTags(TQDomElement element, bool paint) + { + if(element.attribute("display") == "none") + return false; + if(element.tagName() == "linearGradient") + { + ArtGradientLinear *gradient = new ArtGradientLinear(); + + int offsets = -1; + gradient->stops = parseGradientStops(element, offsets); + gradient->n_stops = offsets + 1; + + TQString spread = element.attribute("spreadMethod"); + if(spread == "repeat") + gradient->spread = ART_GRADIENT_REPEAT; + else if(spread == "reflect") + gradient->spread = ART_GRADIENT_REFLECT; + else + gradient->spread = ART_GRADIENT_PAD; + + m_engine->painter()->addLinearGradient(element.attribute("id"), gradient); + m_engine->painter()->addLinearGradientElement(gradient, element); + return true; + } + else if(element.tagName() == "radialGradient") + { + ArtGradientRadial *gradient = new ArtGradientRadial(); + + int offsets = -1; + gradient->stops = parseGradientStops(element, offsets); + gradient->n_stops = offsets + 1; + + m_engine->painter()->addRadialGradient(element.attribute("id"), gradient); + m_engine->painter()->addRadialGradientElement(gradient, element); + return true; + } + + if(!paint) + return true; + + // TODO: Default attribute values + if(element.tagName() == "rect") + { + double x = toPixel(element.attribute("x"), true); + double y = toPixel(element.attribute("y"), false); + double w = toPixel(element.attribute("width"), true); + double h = toPixel(element.attribute("height"), false); + + double rx = 0.0; + double ry = 0.0; + + if(element.hasAttribute("rx")) + rx = toPixel(element.attribute("rx"), true); + + if(element.hasAttribute("ry")) + ry = toPixel(element.attribute("ry"), false); + + m_engine->painter()->drawRectangle(x, y, w, h, rx, ry); + } + else if(element.tagName() == "switch") + { + TQDomNode iterate = element.firstChild(); + + while(!iterate.isNull()) + { + // Reset matrix + m_engine->painter()->setWorldMatrix(new TQWMatrix(m_initialMatrix)); + + // Parse common attributes, style / transform + parseCommonAttributes(iterate); + + if(handleTags(iterate.toElement(), true)) + return true; + iterate = iterate.nextSibling(); + } + return true; + } + else if(element.tagName() == "g" || element.tagName() == "defs") + { + TQDomNode iterate = element.firstChild(); + + while(!iterate.isNull()) + { + // Reset matrix + m_engine->painter()->setWorldMatrix(new TQWMatrix(m_initialMatrix)); + + // Parse common attributes, style / transform + parseCommonAttributes(iterate); + + handleTags(iterate.toElement(), (element.tagName() == "defs") ? false : true); + iterate = iterate.nextSibling(); + } + return true; + } + else if(element.tagName() == "line") + { + double x1 = toPixel(element.attribute("x1"), true); + double y1 = toPixel(element.attribute("y1"), false); + double x2 = toPixel(element.attribute("x2"), true); + double y2 = toPixel(element.attribute("y2"), false); + + m_engine->painter()->drawLine(x1, y1, x2, y2); + return true; + } + else if(element.tagName() == "circle") + { + double cx = toPixel(element.attribute("cx"), true); + double cy = toPixel(element.attribute("cy"), false); + + double r = toPixel(element.attribute("r"), true); // TODO: horiz correct? + + m_engine->painter()->drawEllipse(cx, cy, r, r); + return true; + } + else if(element.tagName() == "ellipse") + { + double cx = toPixel(element.attribute("cx"), true); + double cy = toPixel(element.attribute("cy"), false); + + double rx = toPixel(element.attribute("rx"), true); + double ry = toPixel(element.attribute("ry"), false); + + m_engine->painter()->drawEllipse(cx, cy, rx, ry); + return true; + } + else if(element.tagName() == "polyline") + { + TQPointArray polyline = parsePoints(element.attribute("points")); + m_engine->painter()->drawPolyline(polyline); + return true; + } + else if(element.tagName() == "polygon") + { + TQPointArray polygon = parsePoints(element.attribute("points")); + m_engine->painter()->drawPolygon(polygon); + return true; + } + else if(element.tagName() == "path") + { + bool filled = true; + + if(element.hasAttribute("fill") && element.attribute("fill").contains("none")) + filled = false; + + if(element.attribute("style").contains("fill") && element.attribute("style").stripWhiteSpace().contains("fill:none")) + filled = false; + + m_engine->painter()->drawPath(element.attribute("d"), filled); + return true; + } + else if(element.tagName() == "image") + { + double x = toPixel(element.attribute("x"), true); + double y = toPixel(element.attribute("y"), false); + double w = toPixel(element.attribute("width"), true); + double h = toPixel(element.attribute("height"), false); + + TQString href = element.attribute("xlink:href"); + + TQImage image; + if(href.startsWith("data:")) + { + // Get input + TQCString input = TQString(href.remove(TQRegExp("^data:image/.*;base64,"))).utf8(); + + // Decode into 'output' + TQByteArray output; + KCodecs::base64Decode(input, output); + + // Display + image.loadFromData(output); + } + else + image.load(href); + + if (!image.isNull()) + { + // Scale, if needed + if(image.width() != (int) w || image.height() != (int) h) + image = image.smoothScale((int) w, (int) h, TQ_ScaleFree); + + m_engine->painter()->drawImage(x, y, image); + } + + return true; + } + return false; + } + + void parseStyle(const TQString &style) + { + TQStringList substyles = TQStringList::split(';', style); + for(TQStringList::Iterator it = substyles.begin(); it != substyles.end(); ++it) + { + TQStringList substyle = TQStringList::split(':', (*it)); + TQString command = substyle[0]; + TQString params = substyle[1]; + command = command.stripWhiteSpace(); + params = params.stripWhiteSpace(); + + parsePA(command, params); + } + } + + void parsePA(const TQString &command, const TQString &value) + { + if(command == "stroke-width") // TODO: horiz:false correct? + m_engine->painter()->setStrokeWidth(toPixel(value, false)); + else if(command == "stroke-miterlimit") + m_engine->painter()->setStrokeMiterLimit(value); + else if(command == "stroke-linecap") + m_engine->painter()->setCapStyle(value); + else if(command == "stroke-linejoin") + m_engine->painter()->setJoinStyle(value); + else if(command == "stroke-dashoffset") + m_engine->painter()->setStrokeDashOffset(value); + else if(command == "stroke-dasharray" && value != "none") + m_engine->painter()->setStrokeDashArray(value); + else if(command == "stroke") + m_engine->painter()->setStrokeColor(value); + else if(command == "fill") + m_engine->painter()->setFillColor(value); + else if(command == "fill-rule") + m_engine->painter()->setFillRule(value); + else if(command == "fill-opacity" || command == "stroke-opacity" || command == "opacity") + { + if(command == "fill-opacity") + m_engine->painter()->setFillOpacity(value); + else if(command == "stroke-value") + m_engine->painter()->setStrokeOpacity(value); + else + { + m_engine->painter()->setOpacity(value); + m_engine->painter()->setFillOpacity(value); + m_engine->painter()->setStrokeOpacity(value); + } + } + } + +private: + friend class KSVGIconEngine; + + KSVGIconEngine *m_engine; + TQWMatrix m_initialMatrix; +}; + +struct KSVGIconEngine::Private +{ + KSVGIconPainter *painter; + KSVGIconEngineHelper *helper; + + double width; + double height; +}; + +KSVGIconEngine::KSVGIconEngine() : d(new Private()) +{ + d->painter = 0; + d->helper = new KSVGIconEngineHelper(this); + + d->width = 0.0; + d->height = 0.0; +} + +KSVGIconEngine::~KSVGIconEngine() +{ + if(d->painter) + delete d->painter; + + delete d->helper; + + delete d; +} + +bool KSVGIconEngine::load(int width, int height, const TQString &path) +{ + if(path.isNull()) return false; + + TQDomDocument svgDocument("svg"); + TQFile file(path); + + if(path.right(3).upper() == "SVG") + { + // Open SVG Icon + if(!file.open(IO_ReadOnly)) + return false; + + svgDocument.setContent(&file); + } + else // SVGZ + { + gzFile svgz = gzopen(path.latin1(), "ro"); + if(!svgz) + return false; + + TQString data; + bool done = false; + + TQCString buffer(1024); + int length = 0; + + while(!done) + { + int ret = gzread(svgz, buffer.data() + length, 1024); + if(ret == 0) + done = true; + else if(ret == -1) + return false; + else { + buffer.resize(buffer.size()+1024); + length += ret; + } + } + + gzclose(svgz); + + svgDocument.setContent(buffer); + } + + if(svgDocument.isNull()) + return false; + + // Check for root element + TQDomNode rootNode = svgDocument.namedItem("svg"); + if(rootNode.isNull() || !rootNode.isElement()) + return false; + + // Detect width and height + TQDomElement rootElement = rootNode.toElement(); + + // Create icon painter + d->painter = new KSVGIconPainter(width, height); + + d->width = width; // this sets default for no width -> 100% case + if(rootElement.hasAttribute("width")) + d->width = d->helper->toPixel(rootElement.attribute("width"), true); + + d->height = height; // this sets default for no height -> 100% case + if(rootElement.hasAttribute("height")) + d->height = d->helper->toPixel(rootElement.attribute("height"), false); + + // Create icon painter + d->painter->setDrawWidth(static_cast<int>(d->width)); + d->painter->setDrawHeight(static_cast<int>(d->height)); + + // Set viewport clipping rect + d->painter->setClippingRect(0, 0, width, height); + + // Apply viewbox + if(rootElement.hasAttribute("viewBox")) + { + TQStringList points = TQStringList::split(' ', rootElement.attribute("viewBox").simplifyWhiteSpace()); + + float w = points[2].toFloat(); + float h = points[3].toFloat(); + + double vratiow = width / w; + double vratioh = height / h; + + d->width = w; + d->height = h; + + d->painter->tqworldMatrix()->scale(vratiow, vratioh); + } + else + { + // Fit into 'width' and 'height' + // FIXME: Use an aspect ratio + double ratiow = width / d->width; + double ratioh = height / d->height; + + d->painter->tqworldMatrix()->scale(ratiow, ratioh); + } + + TQWMatrix initialMatrix = *d->painter->tqworldMatrix(); + d->helper->m_initialMatrix = initialMatrix; + + // Apply transform + if(rootElement.hasAttribute("transform")) + d->helper->parseTransform(rootElement.attribute("transform")); + + // Go through all elements + TQDomNode svgNode = rootElement.firstChild(); + while(!svgNode.isNull()) + { + TQDomElement svgChild = svgNode.toElement(); + if(!svgChild.isNull()) + { + d->helper->parseCommonAttributes(svgNode); + d->helper->handleTags(svgChild, true); + } + + svgNode = svgNode.nextSibling(); + + // Reset matrix + d->painter->setWorldMatrix(new TQWMatrix(initialMatrix)); + } + + d->painter->finish(); + + return true; +} + +KSVGIconPainter *KSVGIconEngine::painter() +{ + return d->painter; +} + +TQImage *KSVGIconEngine::image() +{ + return d->painter->image(); +} + +double KSVGIconEngine::width() +{ + return d->width; +} + +double KSVGIconEngine::height() +{ + return d->height; +} + +// vim:ts=4:noet |