net.sf.jasperreports.renderers.AbstractSvgDataToGraphics2DRenderer Maven / Gradle / Ivy
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/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2025 Cloud Software Group, Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see areaHyperlinks;
private transient SoftReference rootNodeRef;
private transient Dimension2D documentSize;
/**
* Creates a SVG renderer.
*
* @param areaHyperlinks a list of {@link JRPrintImageAreaHyperlink area hyperlinks}
*/
protected AbstractSvgDataToGraphics2DRenderer(List areaHyperlinks)
{
this.areaHyperlinks = areaHyperlinks;
}
@Override
public Graphics2D createGraphics(BufferedImage bi)
{
Graphics2D graphics = GraphicsUtil.createGraphics(bi);
return graphics;
}
@Override
public void render(JasperReportsContext jasperReportsContext, Graphics2D grx, Rectangle2D rectangle) throws JRException
{
GraphicsNode rootNode = getRootNode(jasperReportsContext);
AffineTransform transform =
ViewBox.getPreserveAspectRatioTransform(
new float[]{0, 0, (float) documentSize.getWidth(), (float) documentSize.getHeight()},
SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_NONE,
true,
(float) rectangle.getWidth(),
(float) rectangle.getHeight()
);
Graphics2D graphics = (Graphics2D) grx.create();
try
{
graphics.translate(rectangle.getX(), rectangle.getY());
graphics.transform(transform);
// CompositeGraphicsNode not thread safe
synchronized (rootNode)
{
rootNode.paint(graphics);
}
}
finally
{
graphics.dispose();
}
}
@Override
public Dimension2D getDimension(JasperReportsContext jasperReportsContext)
{
try
{
getRootNode(jasperReportsContext);
return documentSize;
}
catch (JRException e)
{
throw new JRRuntimeException(e);
}
}
protected synchronized GraphicsNode getRootNode(JasperReportsContext jasperReportsContext) throws JRException
{
if (rootNodeRef == null || rootNodeRef.get() == null)
{
FontFamilyResolver fontFamilyResolver = BatikFontFamilyResolver.getInstance(jasperReportsContext);
UserAgent userAgentForDoc =
new BatikUserAgent(
jasperReportsContext,
fontFamilyResolver,
BatikUserAgent.PIXEL_TO_MM_72_DPI,
null
);
SVGDocumentFactory documentFactory =
new SAXSVGDocumentFactory(userAgentForDoc.getXMLParserClassName(), true);
documentFactory.setValidating(userAgentForDoc.isXMLParserValidating());
SVGDocument document = getSvgDocument(jasperReportsContext, documentFactory);
Float width = null;
Float height = null;
SVGSVGElement rootElement = document.getRootElement();
if (rootElement != null) //very unlikely for rootElement to be null; but even so, the dimension will be calculated like before
{
Rectangle2D viewBox = null;
String viewBoxStr = rootElement.getAttributeNS(null, SVGConstants.SVG_VIEW_BOX_ATTRIBUTE);
if (viewBoxStr != null && !viewBoxStr.isEmpty())
{
float[] rect = ViewBox.parseViewBoxAttribute(rootElement, viewBoxStr, null);
viewBox = new Rectangle2D.Float(rect[0], rect[1], rect[2], rect[3]);
}
width = parseLength(rootElement, SVGConstants.SVG_WIDTH_ATTRIBUTE);
height = parseLength(rootElement, SVGConstants.SVG_HEIGHT_ATTRIBUTE);
if (width == null)
{
if (height == null)
{
if (viewBox == null)
{
width = 300f;
height = 150f;
}
else
{
width = (float)viewBox.getWidth();
height = (float)viewBox.getHeight();
}
}
else
{
if (viewBox == null)
{
width = 300f;
}
else
{
width = (float)(height * viewBox.getWidth() / viewBox.getHeight());
}
}
}
else
{
if (height == null)
{
if (viewBox == null)
{
height = 150f;
}
else
{
height = (float)(width * viewBox.getHeight() / viewBox.getWidth());
}
}
}
}
Node svgNode = document.getElementsByTagName("svg").item(0);
Node svgWidthNode = svgNode.getAttributes().getNamedItem("width");
Node svgHeightNode = svgNode.getAttributes().getNamedItem("height");
String strSvgWidth = svgWidthNode == null ? null : svgWidthNode.getNodeValue().trim();
String strSvgHeight = svgHeightNode == null ? null : svgHeightNode.getNodeValue().trim();
float pixel2mm = BatikUserAgent.PIXEL_TO_MM_72_DPI;
if (
(strSvgWidth != null && strSvgWidth.endsWith("mm"))
|| (strSvgHeight != null && strSvgHeight.endsWith("mm"))
)
{
pixel2mm = BatikUserAgent.PIXEL_TO_MM_96_DPI;
}
UserAgent userAgentForCtx =
new BatikUserAgent(
jasperReportsContext,
fontFamilyResolver,
pixel2mm,
width == null ? null : new SimpleDimension2D(width, height)
);
BridgeContext ctx = new BridgeContext(userAgentForCtx);
ctx.setDynamic(true);
GVTBuilder builder = new GVTBuilder();
GraphicsNode rootNode = builder.build(ctx, document);
rootNodeRef = new SoftReference<>(rootNode);
//copying the document size object because it has a reference to SVGSVGElementBridge,
//which prevents rootNodeRef from being cleared by the garbage collector
Dimension2D svgSize = ctx.getDocumentSize();
documentSize = new SimpleDimension2D(svgSize.getWidth(), svgSize.getHeight());
}
return rootNodeRef.get();
}
private static Float parseLength(SVGSVGElement el, String attrName)
{
String attrValue = el.getAttributeNS(null, attrName);
if (attrValue == null || attrValue.isEmpty())
{
return null;
}
float value[] = {0};
LengthParser lp = new LengthParser();
LengthHandler lh = new DefaultLengthHandler()
{
@Override
public void lengthValue(float v) throws ParseException
{
value[0] = v;
}
};
lp.setLengthHandler(lh);
lp.parse(attrValue);
return value[0];
}
/**
*
*/
protected abstract SVGDocument getSvgDocument(
JasperReportsContext jasperReportsContext,
SVGDocumentFactory documentFactory
) throws JRException;
@Override
public List getImageAreaHyperlinks(Rectangle2D renderingArea) throws JRException
{
return areaHyperlinks;
}
@Override
public boolean hasImageAreaHyperlinks()
{
return areaHyperlinks != null && !areaHyperlinks.isEmpty();
}
}
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