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#344 - Embed PDF page via an img tag. (WIP)
Nearly there, the only reason I havent committed the test is that it is a couple of pixels off on width, which is noticeable when there is a border.
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51 changes: 51 additions & 0 deletions
51
openhtmltopdf-examples/src/main/resources/visualtest/html/pdf-linked-from-img-tag.html
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| <html> | ||
| <head> | ||
| <style> | ||
| @page { | ||
|
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| } | ||
| img { | ||
| margin-top: 5px; | ||
| display: block; | ||
| box-sizing: border-box; | ||
| border: 1px solid red; | ||
| } | ||
| </style> | ||
| </head> | ||
| <body> | ||
| <!-- Intrinsic size --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="" /> | ||
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| <!-- Width larger than real life --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 100%;" /> | ||
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| <!-- Width smaller than real life --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 3cm;" /> | ||
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| <!-- max-width --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 100%; max-width: 200px;" /> | ||
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| <!-- min-width --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 3cm;min-width: 70%;" /> | ||
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| <!-- content-box --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 50%; padding: 50px; box-sizing: content-box;" /> | ||
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| <!-- border-box --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 50%; padding: 50px; box-sizing: border-box;" /> | ||
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| <!-- width and height --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="width: 5cm; height: 5cm;" /> | ||
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| <!-- Height larger than real life --> | ||
| <img src="../../demos/images/hello.pdf" alt="PDF" style="height: 20cm;" /> | ||
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| <!-- max-height and second page --> | ||
| <img src="../../demos/images/hello.pdf" page="2" alt="PDF" style="height: 20cm; max-height: 3cm;" /> | ||
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| <!-- error handling --> | ||
| <img src="non-existant-pdf.pdf" alt="PDF" style="" /> | ||
| <img src="../../demos/images/hello.pdf" page="15" alt="PDF" style="" /> | ||
|
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| </body> | ||
| </html> |
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149 changes: 149 additions & 0 deletions
149
openhtmltopdf-pdfbox/src/main/java/com/openhtmltopdf/pdfboxout/PdfBoxPDFReplacedElement.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| /* | ||
| * {{{ header & license | ||
| * Copyright (c) 2006 Wisconsin Court System | ||
| * | ||
| * This program 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 2.1 | ||
| * of the License, or (at your option) any later version. | ||
| * | ||
| * 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 Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| * }}} | ||
| */ | ||
| package com.openhtmltopdf.pdfboxout; | ||
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| import com.openhtmltopdf.css.style.CssContext; | ||
| import com.openhtmltopdf.layout.LayoutContext; | ||
| import com.openhtmltopdf.layout.SharedContext; | ||
| import com.openhtmltopdf.pdfboxout.PdfBoxLinkManager.IPdfBoxElementWithShapedLinks; | ||
| import com.openhtmltopdf.render.BlockBox; | ||
| import com.openhtmltopdf.render.Box; | ||
| import com.openhtmltopdf.render.RenderingContext; | ||
| import com.openhtmltopdf.swing.ImageMapParser; | ||
| import com.openhtmltopdf.util.XRLog; | ||
|
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| import org.apache.pdfbox.multipdf.LayerUtility; | ||
| import org.apache.pdfbox.pdmodel.PDDocument; | ||
| import org.apache.pdfbox.pdmodel.PDPage; | ||
| import org.apache.pdfbox.pdmodel.encryption.InvalidPasswordException; | ||
| import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject; | ||
| import org.w3c.dom.Element; | ||
|
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| import java.awt.Point; | ||
| import java.awt.Rectangle; | ||
| import java.awt.Shape; | ||
| import java.io.IOException; | ||
| import java.util.Map; | ||
| import java.util.logging.Level; | ||
|
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| public class PdfBoxPDFReplacedElement implements PdfBoxReplacedElement, IPdfBoxElementWithShapedLinks { | ||
| private final PDFormXObject _srcFormObject; | ||
| private final float _width; | ||
| private final float _height; | ||
| private final Map<Shape, String> _imageMap; | ||
| private Point _location = new Point(0, 0); | ||
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| private PdfBoxPDFReplacedElement(PDFormXObject srcForm, Element e, Box box, CssContext ctx, SharedContext shared, float w, float h) { | ||
| this._srcFormObject = srcForm; | ||
| this._width = w; | ||
| this._height = h; | ||
| this._imageMap = ImageMapParser.findAndParseMap(e, shared); | ||
| } | ||
|
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| private static int parsePage(Element e) { | ||
| if (e.getAttribute("page").isEmpty()) { | ||
| return 0; | ||
| } | ||
|
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| try { | ||
| return Integer.parseInt(e.getAttribute("page")) - 1; | ||
| } catch (NumberFormatException e1) { | ||
| XRLog.exception("Unable to parse page of img tag with PDF!", e1); | ||
| } | ||
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| return 0; | ||
| } | ||
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| public static PdfBoxPDFReplacedElement create(PDDocument target, byte[] pdfBytes, Element e, Box box, CssContext ctx, SharedContext shared) { | ||
| try (PDDocument srcDocument = PDDocument.load(pdfBytes)){ | ||
| int pageNo = parsePage(e); | ||
| if (pageNo >= srcDocument.getNumberOfPages()) { | ||
| XRLog.load(Level.WARNING, "Page does not exist for pdf in img tag. Ignoring!"); | ||
| return null; | ||
| } | ||
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| PDPage page = srcDocument.getPage(pageNo); | ||
| float width = page.getMediaBox().getWidth() * shared.getDotsPerPixel(); | ||
| float height = page.getMediaBox().getHeight() * shared.getDotsPerPixel(); | ||
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| LayerUtility util = new LayerUtility(target); | ||
| PDFormXObject formXObject = util.importPageAsForm(srcDocument, page); | ||
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| return new PdfBoxPDFReplacedElement(formXObject, e, box, ctx, shared, width, height); | ||
| } catch (InvalidPasswordException e1) { | ||
| XRLog.exception("Tried to open a password protected document as src for an img!", e1); | ||
| } catch (IOException e1) { | ||
| XRLog.exception("Could not read pdf passed as src for img element!", e1); | ||
| } | ||
|
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| return null; | ||
| } | ||
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| @Override | ||
| public int getIntrinsicWidth() { | ||
| return (int) _width; | ||
| } | ||
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| @Override | ||
| public int getIntrinsicHeight() { | ||
| return (int) _height; | ||
| } | ||
|
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| @Override | ||
| public Point getLocation() { | ||
| return _location; | ||
| } | ||
|
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| @Override | ||
| public void setLocation(int x, int y) { | ||
| _location = new Point(x, y); | ||
| } | ||
|
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| @Override | ||
| public Map<Shape, String> getLinkMap() { | ||
| return _imageMap; | ||
| } | ||
|
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| @Override | ||
| public void detach(LayoutContext c) { | ||
| } | ||
|
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| @Override | ||
| public boolean isRequiresInteractivePaint() { | ||
| // N/A | ||
| return false; | ||
| } | ||
|
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| @Override | ||
| public void paint(RenderingContext c, PdfBoxOutputDevice outputDevice, BlockBox box) { | ||
| Rectangle contentBounds = box.getContentAreaEdge(box.getAbsX(), box.getAbsY(), c); | ||
| outputDevice.drawPdfAsImage(_srcFormObject, contentBounds, getIntrinsicWidth(), getIntrinsicHeight()); | ||
| } | ||
|
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| @Override | ||
| public int getBaseline() { | ||
| return 0; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean hasBaseline() { | ||
| return false; | ||
| } | ||
| } |
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