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Posted to commits@pdfbox.apache.org by ti...@apache.org on 2015/11/02 18:28:03 UTC
svn commit: r1712095 -
/pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java
Author: tilman
Date: Mon Nov 2 17:28:03 2015
New Revision: 1712095
URL: http://svn.apache.org/viewvc?rev=1712095&view=rev
Log:
PDFBOX-3081: example to draw glyph sizes in rendered images
Added:
pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java (with props)
Added: pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java
URL: http://svn.apache.org/viewvc/pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java?rev=1712095&view=auto
==============================================================================
--- pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java (added)
+++ pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java Mon Nov 2 17:28:03 2015
@@ -0,0 +1,179 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.pdfbox.examples.util;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.util.List;
+import javax.imageio.ImageIO;
+import org.apache.fontbox.util.BoundingBox;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.font.PDFont;
+import org.apache.pdfbox.rendering.PDFRenderer;
+import org.apache.pdfbox.text.PDFTextStripper;
+import org.apache.pdfbox.text.TextPosition;
+
+/**
+ * This is an example on how to get some x/y coordinates of text and to show them in a rendered
+ * image.
+ *
+ * @author Ben Litchfield
+ * @author Tilman Hausherr
+ */
+public class DrawPrintTextLocations extends PDFTextStripper
+{
+ private BufferedImage image;
+ private final String filename;
+ static final int SCALE = 4;
+ private Graphics2D g2d;
+ private final PDDocument document;
+
+ /**
+ * Instantiate a new PDFTextStripper object.
+ *
+ * @param document
+ * @param filename
+ * @throws IOException If there is an error loading the properties.
+ */
+ public DrawPrintTextLocations(PDDocument document, String filename) throws IOException
+ {
+ this.document = document;
+ this.filename = filename;
+ }
+
+ /**
+ * This will print the documents data.
+ *
+ * @param args The command line arguments.
+ *
+ * @throws IOException If there is an error parsing the document.
+ */
+ public static void main(String[] args) throws IOException
+ {
+ if (args.length != 1)
+ {
+ usage();
+ }
+ else
+ {
+ PDDocument document = null;
+ try
+ {
+ document = PDDocument.load(new File(args[0]));
+
+ DrawPrintTextLocations stripper = new DrawPrintTextLocations(document, args[0]);
+ stripper.setSortByPosition(true);
+
+ for (int page = 0; page < document.getNumberOfPages(); ++page)
+ {
+ stripper.stripPage(page);
+ }
+ }
+ finally
+ {
+ if (document != null)
+ {
+ document.close();
+ }
+ }
+ }
+ }
+
+ private void stripPage(int page) throws IOException
+ {
+ PDFRenderer pdfRenderer = new PDFRenderer(document);
+ image = pdfRenderer.renderImage(page, SCALE);
+
+ g2d = image.createGraphics();
+ g2d.setStroke(new BasicStroke(0.1f));
+ g2d.scale(SCALE, SCALE);
+
+ setStartPage(page + 1);
+ setEndPage(page + 1);
+
+ Writer dummy = new OutputStreamWriter(new ByteArrayOutputStream());
+ writeText(document, dummy);
+
+ g2d.dispose();
+
+ String imageFilename = filename;
+ int pt = imageFilename.lastIndexOf('.');
+ imageFilename = imageFilename.substring(0, pt) + "-marked-" + (page + 1) + ".png";
+ ImageIO.write(image, "png", new File(imageFilename));
+ }
+
+ /**
+ * Override the default functionality of PDFTextStripper.
+ */
+ @Override
+ protected void writeString(String string, List<TextPosition> textPositions) throws IOException
+ {
+ for (TextPosition text : textPositions)
+ {
+ System.out.println("String[" + text.getXDirAdj() + ","
+ + text.getYDirAdj() + " fs=" + text.getFontSize() + " xscale="
+ + text.getXScale() + " height=" + text.getHeightDir() + " space="
+ + text.getWidthOfSpace() + " width="
+ + text.getWidthDirAdj() + "]" + text.getUnicode());
+
+ // in red:
+ // show rectangles with the "height" (not a real height, but used for text extraction
+ // heuristics, it is 1/2 of the bounding box height and starts at y=0)
+ Rectangle2D.Float rect = new Rectangle2D.Float(
+ text.getXDirAdj(),
+ (text.getYDirAdj() - text.getHeightDir()),
+ text.getWidthDirAdj(),
+ text.getHeightDir());
+ g2d.setColor(Color.red);
+ g2d.draw(rect);
+
+ // in blue:
+ // show rectangle with the real vertical bounds, based on the font bounding box y values
+ // usually, the height is identical to what you see when marking text in Adobe Reader
+ PDFont font = text.getFont();
+ BoundingBox bbox = font.getBoundingBox();
+ Point2D.Float p1 = font.getFontMatrix().transformPoint(bbox.getLowerLeftX(), bbox.getLowerLeftY());
+ Point2D.Float p2 = font.getFontMatrix().transformPoint(bbox.getUpperRightX(), bbox.getUpperRightY());
+
+ rect = new Rectangle2D.Float(
+ text.getXDirAdj(),
+ (text.getYDirAdj() - p2.y * text.getYScale()),
+ text.getWidthDirAdj(),
+ (p2.y - p1.y) * text.getYScale());
+ g2d.setColor(Color.blue);
+ g2d.draw(rect);
+
+ }
+ }
+
+ /**
+ * This will print the usage for this document.
+ */
+ private static void usage()
+ {
+ System.err.println("Usage: java " + DrawPrintTextLocations.class.getName() + " <input-pdf>");
+ }
+}
Propchange: pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/util/DrawPrintTextLocations.java
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