- more work on generic pools

- generic inlist

src/org/oscim/renderer/layer/Layer.java

@@ -16,10 +16,11 @@ package org.oscim.renderer.layer;
 
 import java.nio.ShortBuffer;
 
+import org.oscim.utils.pool.Inlist;
 /**
  * @authorHannes Janetzek
  */
-public abstract class Layer {
+public abstract class Layer extends Inlist<Layer>{
 	public final static byte LINE = 0;
 	public final static byte POLYGON = 1;
 	public final static byte TEXLINE = 2;
@@ -31,8 +32,6 @@ public abstract class Layer {
 
 	public byte type = -1;
 
-	public Layer next;
-
 	// drawing order from bottom to top
 	int level;
 

src/org/oscim/renderer/layer/TextItem.java

@@ -43,8 +43,6 @@ public class TextItem extends Inlist<TextItem> {
 
 		TextItem ti = pool.get();
 
-		ti.next = null;
-
 		ti.x = orig.x;
 		ti.y = orig.y;
 
@@ -56,6 +54,22 @@ public class TextItem extends Inlist<TextItem> {
 		return ti;
 	}
 
+	public static boolean shareText(TextItem ti1, TextItem ti2){
+		if (ti1.text != ti2.text)
+			return false;
+
+		if (ti1.string == ti2.string)
+			return true;
+
+		if (ti1.string.equals(ti2.string)){
+			// make strings unique, should be done only once..
+			ti1.string = ti2.string;
+			return true;
+		}
+
+		return false;
+	}
+
 	public TextItem set(float x, float y, String string, Text text) {
 		this.x = x;
 		this.y = y;