Author: simoneg
Date: Mon Oct 19 22:50:49 2009
New Revision: 826855
URL: http://svn.apache.org/viewvc?rev=826855&view=rev
Log:
Basic image support
Added:
labs/magma/trunk/beans-image/pom.xml
labs/magma/trunk/beans-image/src/
labs/magma/trunk/beans-image/src/main/
labs/magma/trunk/beans-image/src/main/java/
labs/magma/trunk/beans-image/src/main/java/org/
labs/magma/trunk/beans-image/src/main/java/org/apache/
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/image/
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/image/ThumbnailMaker.java
labs/magma/trunk/beans-image/src/main/resources/
labs/magma/trunk/beans-image/src/test/
labs/magma/trunk/beans-image/src/test/java/
labs/magma/trunk/beans-image/src/test/resources/
Added: labs/magma/trunk/beans-image/pom.xml
URL:
http://svn.apache.org/viewvc/labs/magma/trunk/beans-image/pom.xml?rev=826855&view=auto
==============================================================================
--- labs/magma/trunk/beans-image/pom.xml (added)
+++ labs/magma/trunk/beans-image/pom.xml Mon Oct 19 22:50:49 2009
@@ -0,0 +1,20 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd";>
+ <parent>
+ <artifactId>magma-parent</artifactId>
+ <groupId>org.apache.magma</groupId>
+ <version>2</version>
+ </parent>
+ <modelVersion>4.0.0</modelVersion>
+ <groupId>org.apache.magma</groupId>
+ <artifactId>beans-image</artifactId>
+ <packaging>magma</packaging>
+ <version>0.0.2-SNAPSHOT</version>
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.magma</groupId>
+ <artifactId>foundation-beans</artifactId>
+ <version>0.0.2-SNAPSHOT</version>
+ </dependency>
+ </dependencies>
+
+</project>
Added:
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/image/ThumbnailMaker.java
URL:
http://svn.apache.org/viewvc/labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/image/ThumbnailMaker.java?rev=826855&view=auto
==============================================================================
---
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/image/ThumbnailMaker.java
(added)
+++
labs/magma/trunk/beans-image/src/main/java/org/apache/magma/bean/image/ThumbnailMaker.java
Mon Oct 19 22:50:49 2009
@@ -0,0 +1,106 @@
+package org.apache.magma.bean.image;
+
+import java.awt.Image;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.imageio.ImageIO;
+
+/**
+ * Utility class for creating scaled down versions of images.
+ *
+ * @author Simone Gianni <[email protected]>
+ */
+public class ThumbnailMaker {
+
+ private int maxw = 80;
+ private int maxh = 80;
+ private String format = "jpg";
+
+ /**
+ * Constructs using a string defined format.
+ *
+ * The format is :
+ * format widthxheight
+ *
+ * So for example "jpg 80x80"
+ *
+ * @param def The format
+ */
+ public ThumbnailMaker(String def) {
+ def = def.trim();
+ if (def.indexOf(' ') > 0) {
+ this.format = def.substring(0, def.indexOf(' '));
+ def = def.substring(def.indexOf(' ') + 1);
+ }
+ String[] split = def.split("x");
+ this.maxw = Integer.parseInt(split[0]);
+ this.maxh = Integer.parseInt(split[1]);
+ }
+
+ /**
+ * Constructs using specific target size and format.
+ *
+ * @param maxw Maximum width
+ * @param maxh Maximum height
+ * @param format Scaled down image format, one of "jpg", "gif" or other
java supported output types.
+ */
+ public ThumbnailMaker(int maxw, int maxh, String format) {
+ this.maxw = maxw;
+ this.maxh = maxh;
+ this.format = format;
+ }
+
+ /**
+ * Constructs using specific target size, using jpg format.
+ *
+ * @param maxw Maximum width
+ * @param maxh Maximum height
+ */
+ public ThumbnailMaker(int maxw, int maxh) {
+ this(maxw, maxh, "jpg");
+ }
+
+ /**
+ * Scales an image to the required size and format.
+ *
+ * Scaling keeps the size ratio of the original image,
+ * scaling it so that it fits in a rectangle or required dimensions.
+ *
+ * @param image input stream of the original image
+ * @return input stream from which to read the scaled image
+ * @throws IOException
+ */
+ public InputStream scaleImage(InputStream image) throws IOException {
+ BufferedImage origimg = ImageIO.read(image);
+ int prew = origimg.getWidth();
+ int preh = origimg.getHeight();
+ // scale factor based on width
+ double scalefw = ((double)maxw / (double)prew);
+ // scale factor based on height
+ double scalefh = ((double)maxh / (double)preh);
+ int tgw = -1;
+ int tgh = -1;
+ if (prew > maxw || preh > maxh) {
+ if (scalefw < scalefh) {
+ // we need to scale on width
+ tgw = maxw;
+ } else {
+ // we need to scale on height
+ tgh = maxh;
+ }
+ } else {
+ System.out.println("Not scaling image " + prew + "x" +
preh);
+ }
+ Image scaled = origimg.getScaledInstance(tgw, tgh,
Image.SCALE_SMOOTH);
+ BufferedImage scaledbi = new
BufferedImage(scaled.getWidth(null),
scaled.getHeight(null),BufferedImage.TYPE_INT_RGB);
+ scaledbi.getGraphics().drawImage(scaled, 0, 0, null);
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ ImageIO.write(scaledbi, format, baos);
+ return new ByteArrayInputStream(baos.toByteArray());
+ }
+
+}
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