From a69453749e6317f15c6bcb6c1da5b33e31244f65 Mon Sep 17 00:00:00 2001
From: Andreas Fitzek <andreas.fitzek@iaik.tugraz.at>
Date: Fri, 24 Oct 2014 09:44:56 +0200
Subject: Image Scaling
---
.../at/gv/egiz/pdfas/common/utils/ImageUtils.java | 60 ++++++++++++++++++++++
1 file changed, 60 insertions(+)
(limited to 'pdf-as-common/src')
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java
index c6ad2858..5dd0f636 100644
--- a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/ImageUtils.java
@@ -25,15 +25,33 @@ package at.gv.egiz.pdfas.common.utils;
import java.awt.AlphaComposite;
import java.awt.Color;
+import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Iterator;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.stream.ImageInputStream;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.pdfas.common.exceptions.PdfAsException;
+import at.gv.egiz.pdfas.common.settings.ISettings;
public class ImageUtils {
+ private static final Logger logger = LoggerFactory
+ .getLogger(ImageUtils.class);
+
public static BufferedImage removeAlphaChannel(BufferedImage src) {
if (src.getColorModel().hasAlpha())
{
@@ -89,4 +107,46 @@ public class ImageUtils {
return new BufferedImage(icm2, raster, image.isAlphaPremultiplied(),
null);
}
+
+ public static Dimension getImageDimensions(InputStream is) throws IOException {
+ ImageInputStream in = ImageIO.createImageInputStream(is);
+ try {
+ final Iterator<ImageReader> readers = ImageIO.getImageReaders(in);
+ if (readers.hasNext()) {
+ ImageReader reader = readers.next();
+ try {
+ reader.setInput(in);
+ return new Dimension(reader.getWidth(0), reader.getHeight(0));
+ } finally {
+ reader.dispose();
+ }
+ }
+ throw new IOException("Failed to read Image file");
+ } finally {
+ if (in != null) in.close();
+ }
+ }
+
+ public static File getImageFile(String imageFile, ISettings settings) throws PdfAsException, IOException {
+ File img_file = new File(imageFile);
+ if (!img_file.isAbsolute()) {
+ logger.debug("Image file declaration is relative. Prepending path of resources directory.");
+ logger.debug("Image Location: "
+ + settings.getWorkingDirectory()
+ + File.separator + imageFile);
+ img_file = new File(settings.getWorkingDirectory()
+ + File.separator + imageFile);
+ } else {
+ logger.debug("Image file declaration is absolute. Skipping file relocation.");
+ }
+
+ if (!img_file.exists()) {
+ logger.debug("Image file \""
+ + img_file.getCanonicalPath()
+ + "\" doesn't exist.");
+ throw new PdfAsException("error.pdf.stamp.04");
+ }
+
+ return img_file;
+ }
}
--
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