Changeset 20247 in osm for applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/ImageModifier.java

Timestamp:

2010-03-02T15:15:29+01:00 (15 years ago)

Author:

pieren

Message:

layer selection configurable for vectorized images

File:

• applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/ImageModifier.java (modified) (2 diffs)

applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/ImageModifier.java

@@ -1 +1 @@
 // License: GPL. v2 and later. Copyright 2008-2009 by Pieren <pieren3@gmail.com> and others
+// Some of the procedures below are imported from image4j.sourceforge.net, license LGPL.
 package cadastre_fr;
 
+import java.awt.Transparency;
 import java.awt.image.BufferedImage;
+import java.awt.image.ColorConvertOp;
+import java.awt.image.DataBuffer;
+import java.awt.image.IndexColorModel;
 
 public abstract class ImageModifier {
@@ -14 +19 @@
     public BufferedImage bufferedImage;
 
+    protected BufferedImage convert1(BufferedImage src) {
+        IndexColorModel icm = new IndexColorModel(
+            1, 2, new byte[] { (byte) 0, (byte) 0xFF },
+            new byte[] { (byte) 0, (byte) 0xFF },
+            new byte[] { (byte) 0, (byte) 0xFF }
+        );
+        
+        BufferedImage dest = new BufferedImage(
+            src.getWidth(), src.getHeight(),
+            BufferedImage.TYPE_BYTE_BINARY,
+            icm
+            );
+        
+        ColorConvertOp cco = new ColorConvertOp(
+            src.getColorModel().getColorSpace(),
+            dest.getColorModel().getColorSpace(),
+            null
+            );
+        
+        cco.filter(src, dest);
+        
+        return dest;
+      }
+
+    /**
+     * Converts the source image to 4-bit colour
+     * using the default 16-colour palette:
+     * <ul>
+     *  <li>black</li><li>dark red</li><li>dark green</li>
+     *  <li>dark yellow</li><li>dark blue</li><li>dark magenta</li>
+     *  <li>dark cyan</li><li>dark grey</li><li>light grey</li>
+     *  <li>red</li><li>green</li><li>yellow</li><li>blue</li>
+     *  <li>magenta</li><li>cyan</li><li>white</li>
+     * </ul>
+     * No transparency.
+     * @param src the source image to convert
+     * @return a copy of the source image with a 4-bit colour depth, with the default colour pallette
+     */
+    protected BufferedImage convert4(BufferedImage src) {
+        int[] cmap = new int[] {
+          0x000000, 0x800000, 0x008000, 0x808000,
+          0x000080, 0x800080, 0x008080, 0x808080,
+          0xC0C0C0, 0xFF0000, 0x00FF00, 0xFFFF00,
+          0x0000FF, 0xFF00FF, 0x00FFFF, 0xFFFFFF
+        };
+        return convert4(src, cmap);
+      }
+        
+      /**
+       * Converts the source image to 4-bit colour
+       * using the given colour map.  No transparency.
+       * @param src the source image to convert
+       * @param cmap the colour map, which should contain no more than 16 entries
+       * The entries are in the form RRGGBB (hex).
+       * @return a copy of the source image with a 4-bit colour depth, with the custom colour pallette
+       */
+    protected BufferedImage convert4(BufferedImage src, int[] cmap) {
+        IndexColorModel icm = new IndexColorModel(
+            4, cmap.length, cmap, 0, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE
+            );
+        BufferedImage dest = new BufferedImage(
+            src.getWidth(), src.getHeight(),
+            BufferedImage.TYPE_BYTE_BINARY,
+            icm
+            );
+        ColorConvertOp cco = new ColorConvertOp(
+            src.getColorModel().getColorSpace(),
+            dest.getColorModel().getColorSpace(),
+            null
+            );
+        cco.filter(src, dest);
+        
+        return dest;
+      }
+      
+    protected BufferedImage convert8(BufferedImage src) {
+        BufferedImage dest = new BufferedImage(
+            src.getWidth(), src.getHeight(),
+            BufferedImage.TYPE_BYTE_INDEXED
+            );
+        ColorConvertOp cco = new ColorConvertOp(
+            src.getColorModel().getColorSpace(),
+            dest.getColorModel().getColorSpace(),
+            null
+            );
+        cco.filter(src, dest);
+        return dest;
+      }
 }