From: mh <mh>
Date: Fri, 19 Oct 2001 13:44:19 +0000 (+0000)
Subject: JMagick reference implementation. not to be used officially.
X-Git-Tag: prexmlproducerconfig~331
X-Git-Url: http://erislabs.org.uk/gitweb/?a=commitdiff_plain;h=5aebc4d74645e7b6760ba92fb91e4e1f1a0d61d7;p=mir.git

JMagick reference implementation. not to be used officially.
---

diff --git a/jmagick/README b/jmagick/README
new file mode 100755
index 00000000..0f1110f1
--- /dev/null
+++ b/jmagick/README
@@ -0,0 +1,22 @@
+This directory contains an implementation of mir.misc.WedbImage that uses
+JMagick for image manipulation as an alternative to Sun's JAI ( Java 
+Advanced Imaging). JMagick is the java interface to good'ol ImageMagick.
+This code is for JMagick-5.33. You need to dowload JMagick from the ImageMagick
+site.
+
+There are no plans to replace the JAI implementation with this. JAI is better
+maintained (the last JMagick release was November 2000) and is more powerful.
+
+You absolutely need to have the Jmagick shared library in your LD_LIBRARY_PATH
+var for it to work.
+
+The only advantage it has over JAI is that it is open source (AFAIK, the JAI
+source is not available, please correct me if I'm wrong). 
+
+Also, it provides a native implementation (the c shared library) for all 
+platforms as one has the source to compile it... However, my testing shows
+that the pure Java JAI is *faster* than the native JMagick/ImageMagick, at
+least on the PPC architecture (G3) tested against JAI 1.1.1.
+
+-mh <heckmann@hbe.ca>
+2001.10.19
diff --git a/jmagick/WebdbImage.java.jmagick b/jmagick/WebdbImage.java.jmagick
new file mode 100755
index 00000000..731570bb
--- /dev/null
+++ b/jmagick/WebdbImage.java.jmagick
@@ -0,0 +1,177 @@
+package mir.misc;
+
+/**
+ * Title:
+ * Description:
+ * Copyright:    Copyright (c) 2001
+ * Company:      Indymedia
+ * @author
+ * @version 1.0
+ */
+
+import java.io.*;
+//import java.awt.image.renderable.ParameterBlock;
+import java.awt.Dimension;
+import java.awt.Rectangle;
+import magick.*;
+
+public class WebdbImage
+{
+
+    private Logfile theLog = Logfile.getInstance(MirConfig.getPropWithHome("HTMLTemplateProcessor.Logfile"));
+	// imageTypes
+	public final static int        WEBDB_JPG=0;
+	public final static int        WEBDB_GIF=1;
+
+	// default values for scaling
+	private int               maxIconSize=120;
+	private int               maxImageSize=640;
+
+	private byte[]            iconData;
+	private byte[]            imageData;
+	private int               imageType;
+	private int               iconWidth;
+	private int               iconHeight;
+
+	// internal representation of the image
+	private MagickImage       magickImage;
+
+
+	// constructor
+	public WebdbImage(byte[] image, int type)
+		throws IOException
+	{
+		imageType=type;
+        try {
+            magickImage = new MagickImage(new ImageInfo(), image);
+        } catch (MagickException e) {theLog.printDebugInfo("fail: "+e.toString());}
+		scaleImage();
+	}
+
+	public WebdbImage(byte[] image, int type, int iconMax)
+		throws IOException
+	{
+		imageType=type;
+		maxIconSize=iconMax;
+        try {
+            magickImage = new MagickImage(new ImageInfo(), image);
+        } catch (MagickException e) {theLog.printDebugInfo("fail: "+e.toString());}
+		scaleImage();
+	}
+
+	public WebdbImage(byte[] image, int type, int iconMax, int imageMax)
+		throws IOException
+	{
+		imageType=type;
+		maxIconSize=iconMax;
+		maxImageSize=imageMax;
+        try {
+            magickImage = new MagickImage(new ImageInfo(), image);
+        } catch (MagickException e) {theLog.printDebugInfo("fail: "+e.toString());}
+		scaleImage();
+	}
+
+
+	// acc3ssor-methods
+	public int getIconWidth() throws IOException {
+		if (iconData==null) scaleIcon();
+		return iconWidth;
+	}
+
+	public int getIconHeight() throws IOException {
+		if (iconData==null) scaleIcon();
+		return iconHeight;
+	}
+
+	public int getImageWidth() {
+        try {
+            return (int)magickImage.getDimension().getWidth();
+        } catch (MagickException e) { return -1;}
+	}
+
+	public int getImageHeight() {
+        int gg;
+        try {
+		    return (int)magickImage.getDimension().getHeight();
+        } catch (MagickException e) { return -1;}
+	}
+
+	public byte[] getImage() {
+		if (imageData==null) {
+            try {
+                ImageInfo imageInfo = new ImageInfo();
+                imageInfo.init();
+
+                switch (imageType) {
+                    case WEBDB_JPG:
+                        imageInfo.setMagickMember("JPG");
+                    case WEBDB_GIF:
+                        imageInfo.setMagickMember("JPG");
+                }
+
+                imageData = magickImage.imageToBlob(imageInfo);
+            } catch (MagickException e) {
+                theLog.printDebugInfo("getImage: magick "+e.toString());
+            }
+        }
+        return imageData;
+	}
+
+	public byte[] getIcon()
+		throws IOException
+	{
+		if (iconData == null) scaleIcon();
+		return iconData;
+	}
+
+	private void scaleImage()
+		throws java.io.IOException
+	{
+		if (maxImageSize>0 && ( getImageHeight()> maxImageSize|| getImageWidth() >maxImageSize))
+		{
+			float scale;
+			if (getImageHeight() > getImageWidth())
+				scale = (float)maxImageSize / (float)getImageHeight();
+			else
+				scale = (float)maxImageSize / (float)getImageWidth();
+
+            try {
+			    magickImage = magickImage.scaleImage((int)scale*getImageWidth(), (int)scale*getImageHeight());
+            } catch (MagickException e) {}
+		}
+	}
+
+	private void scaleIcon()
+		throws java.io.IOException
+	{
+		if (iconData==null) {
+			float scale;
+			if (getImageHeight() > getImageWidth())
+				scale = (float)maxIconSize / (float)getImageHeight();
+			else
+				scale = (float)maxIconSize / (float)getImageWidth();
+
+            try {
+			    MagickImage temp = magickImage.scaleImage((int)(scale*getImageWidth()), (int)(scale*getImageHeight()));
+                ImageInfo imageInfo = new ImageInfo();
+                imageInfo.init();
+                /** @todo gif */
+                switch (imageType) {
+                    case WEBDB_JPG:
+                        imageInfo.setMagickMember("JPG");
+                    case WEBDB_GIF:
+                        imageInfo.setMagickMember("JPG");
+                }
+                iconWidth=(int)temp.getDimension().getWidth();
+                iconHeight=(int)temp.getDimension().getHeight();
+                // Put a black rectangle around the border
+                DrawInfo drawInfo = new DrawInfo(imageInfo);
+                drawInfo.setPrimitive("Rectangle 0 0 "+(iconWidth-1)+" "+(iconHeight-1));
+                drawInfo.setStroke(PixelPacket.queryColorDatabase("black"));
+                temp.drawImage(drawInfo);
+                iconData = temp.imageToBlob(imageInfo);
+            } catch (MagickException e) {}
+		}
+	}
+
+}