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-rw-r--r--tdecore/svgicons/ksvgiconengine.cpp692
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diff --git a/tdecore/svgicons/ksvgiconengine.cpp b/tdecore/svgicons/ksvgiconengine.cpp
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+++ b/tdecore/svgicons/ksvgiconengine.cpp
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+/*
+ 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
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-16 22:47:34 +0000