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Parses XML to PDF, with CSS support, using iText
/*
* $Id: 9d516de82e2377f5f404b1e3417655537b20ed1e $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Balder Van Camp, Emiel Ackermann, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.tool.xml.css.apply;
import com.itextpdf.text.Image;
import com.itextpdf.text.html.HtmlUtilities;
import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.css.CSS;
import com.itextpdf.tool.xml.css.CssUtils;
import com.itextpdf.tool.xml.html.HTML;
import java.util.Map;
/**
* Class that applies the parsed CSS to an Image object.
*
* @author redlab_b
*/
public class ImageCssApplier {
/**
* Applies CSS to an Image. Currently supported:
* - width
* - height
* - borders (color, width)
* - spacing before and after
*
* @param img the image
* @param tag the tag with the css
* @return a styled Image
*/
public Image apply(final Image img, final Tag tag) {
Map cssMap = tag.getCSS();
String widthValue = cssMap.get(HTML.Attribute.WIDTH);
if (widthValue == null) {
widthValue = tag.getAttributes().get(HTML.Attribute.WIDTH);
}
String heightValue = cssMap.get(HTML.Attribute.HEIGHT);
if (heightValue == null) {
heightValue = tag.getAttributes().get(HTML.Attribute.HEIGHT);
}
if (widthValue == null) {
img.setScaleToFitLineWhenOverflow(true);
} else {
img.setScaleToFitLineWhenOverflow(false);
}
img.setScaleToFitHeight(false);
CssUtils utils = CssUtils.getInstance();
float widthInPoints = utils.parsePxInCmMmPcToPt(widthValue);
float heightInPoints = utils.parsePxInCmMmPcToPt(heightValue);
if (widthInPoints > 0 && heightInPoints > 0) {
img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (widthInPoints > 0) {
heightInPoints = img.getHeight() * widthInPoints / img.getWidth();
img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (heightInPoints > 0) {
widthInPoints = img.getWidth() * heightInPoints / img.getHeight();
img.scaleAbsolute(widthInPoints, heightInPoints);
}
// apply border CSS
String borderTopColor = cssMap.get(CSS.Property.BORDER_TOP_COLOR);
if (borderTopColor != null) {
img.setBorderColorTop(HtmlUtilities.decodeColor(borderTopColor));
}
String borderTopWidth = cssMap.get(CSS.Property.BORDER_TOP_WIDTH);
if (borderTopWidth != null) {
img.setBorderWidthTop(utils.parseValueToPt(borderTopWidth, 1f));
}
String borderRightColor = cssMap.get(CSS.Property.BORDER_RIGHT_COLOR);
if (borderRightColor != null) {
img.setBorderColorRight(HtmlUtilities.decodeColor(borderRightColor));
}
String borderRightWidth = cssMap.get(CSS.Property.BORDER_RIGHT_WIDTH);
if (borderRightWidth != null) {
img.setBorderWidthRight(utils.parseValueToPt(borderRightWidth, 1f));
}
String borderBottomColor = cssMap.get(CSS.Property.BORDER_BOTTOM_COLOR);
if (borderBottomColor != null) {
img.setBorderColorBottom(HtmlUtilities.decodeColor(borderBottomColor));
}
String borderBottomWidth = cssMap.get(CSS.Property.BORDER_BOTTOM_WIDTH);
if (borderBottomWidth != null) {
img.setBorderWidthBottom(utils.parseValueToPt(borderBottomWidth, 1f));
}
String borderLeftColor = cssMap.get(CSS.Property.BORDER_LEFT_COLOR);
if (borderLeftColor != null) {
img.setBorderColorLeft(HtmlUtilities.decodeColor(borderLeftColor));
}
String borderLeftWidth = cssMap.get(CSS.Property.BORDER_LEFT_WIDTH);
if (borderLeftWidth != null) {
img.setBorderWidthLeft(utils.parseValueToPt(borderLeftWidth, 1f));
}
// end of border CSS
String before = cssMap.get(CSS.Property.BEFORE);
if (before != null) {
img.setSpacingBefore(Float.parseFloat(before));
}
String after = cssMap.get(CSS.Property.AFTER);
if (after != null) {
img.setSpacingAfter(Float.parseFloat(after));
}
img.setWidthPercentage(0);
return img;
}
}