Final core and demo changes for jogl merge

Core:
- Region: Cleanup up constant names
- Renderer: Add getRenderType()
- TextRenderer: Add cache size limit
- JavaFontLoader: Add FIXME 'Add cache size to limit memory usage'
- UbuntuFontLoader: Add cache and FIXME 'Add cache size to limit memory usage'
- TypecastFont: Add FIXME 'Add cache size to limit memory usage ??'

Demos:
- Relocated and split (main/listener) for jogl merge
- Add 's' for screenshot
- Text:
  - Add 'i' for live editing mode (until CR, backspace supported)

3 files changed, 47 insertions, 17 deletions

diff --git a/src/com/jogamp/graph/curve/opengl/RegionRenderer.java b/src/com/jogamp/graph/curve/opengl/RegionRenderer.java
index 746eba636..c1fec10b8 100644
--- a/src/com/jogamp/graph/curve/opengl/RegionRenderer.java
+++ b/src/com/jogamp/graph/curve/opengl/RegionRenderer.java
@@ -59,7 +59,7 @@ public abstract class RegionRenderer extends Renderer {
      * @return the resulting Region.
      */
     protected Region createRegion(GL2ES2 gl, OutlineShape outlineShape, float sharpness) {
-        Region region = RegionFactory.create(gl.getContext(), st, regionType);
+        Region region = RegionFactory.create(gl.getContext(), st, renderType);
         
         outlineShape.transformOutlines(OutlineShape.QUADRATIC_NURBS);
         
@@ -78,7 +78,7 @@ public abstract class RegionRenderer extends Renderer {
      * @return the resulting Region inclusive the generated region
      */
     protected Region createRegion(GL2ES2 gl, OutlineShape[] outlineShapes, float sharpness) {
-        Region region = RegionFactory.create(gl.getContext(), st, regionType);
+        Region region = RegionFactory.create(gl.getContext(), st, renderType);
         
         int numVertices = region.getNumVertices();
         
diff --git a/src/com/jogamp/graph/curve/opengl/Renderer.java b/src/com/jogamp/graph/curve/opengl/Renderer.java
index a36cf870b..863928ed4 100644
--- a/src/com/jogamp/graph/curve/opengl/Renderer.java
+++ b/src/com/jogamp/graph/curve/opengl/Renderer.java
@@ -6,7 +6,6 @@ import javax.media.opengl.fixedfunc.GLMatrixFunc;
 
 import jogamp.opengl.Debug;
 
-import com.jogamp.graph.curve.Region;
 import com.jogamp.graph.geom.Vertex;
 import com.jogamp.graph.geom.opengl.SVertex;
 import com.jogamp.opengl.util.PMVMatrix;
@@ -34,15 +33,20 @@ public abstract class Renderer {
     protected ShaderState st = new ShaderState();
     protected PMVMatrix pmvMatrix = new PMVMatrix();
     protected GLUniformData mgl_PMVMatrix;
-    protected int regionType = Region.SINGLE_PASS;
+    protected int renderType;
     protected int vp_width = 0;
     protected int vp_height = 0;
     
     private boolean vboSupported = false; 
     private boolean initialized = false;
     
-    protected Renderer(Vertex.Factory<? extends Vertex> factory, int type) {
-        this.regionType = type;
+    /**
+     * 
+     * @param factory
+     * @param renderType either {@link com.jogamp.graph.curve.Region#SINGLE_PASS} or {@link com.jogamp.graph.curve.Region#TWO_PASS}
+     */
+    protected Renderer(Vertex.Factory<? extends Vertex> factory, int renderType) {
+        this.renderType = renderType;
         this.pointFactory = (null != factory) ? factory : SVertex.factory();        
     }
     
@@ -52,6 +56,8 @@ public abstract class Renderer {
     
     public final boolean isVBOSupported() { return vboSupported; }
     
+    public final int getRenderType() { return renderType; }
+    
     public final int getWidth() { return vp_width; }
     public final int getHeight() { return vp_height; }
     
diff --git a/src/com/jogamp/graph/curve/opengl/TextRenderer.java b/src/com/jogamp/graph/curve/opengl/TextRenderer.java
index 83f2c93ca..2bb99d27c 100644
--- a/src/com/jogamp/graph/curve/opengl/TextRenderer.java
+++ b/src/com/jogamp/graph/curve/opengl/TextRenderer.java
@@ -1,5 +1,6 @@
 package com.jogamp.graph.curve.opengl;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 
@@ -15,8 +16,6 @@ import com.jogamp.graph.geom.Vertex;
 
 public abstract class TextRenderer extends Renderer {
     
-    protected HashMap<String, GlyphString> strings = new HashMap<String, GlyphString>();
-    
     /** 
      * Create a Hardware accelerated Text Renderer.
      * @param factory optional Point.Factory for Vertex construction. Default is Vertex.Factory.
@@ -58,22 +57,47 @@ public abstract class TextRenderer extends Renderer {
         
         GlyphString glyphString = new GlyphString(pointFactory, font.getName(), str);
         glyphString.createfromFontPath(paths, affineTransform);
-        glyphString.generateRegion(gl.getContext(), sharpness, st, regionType);
+        glyphString.generateRegion(gl.getContext(), sharpness, st, renderType);
         
         return glyphString;
     }
         
-   protected static String getTextHashCode(Font font, String str, int fontSize) {
-       // FIXME: use integer hash code
-       return font.getName() + "." + str.hashCode() + "." + fontSize;
-   }
-   
    public void flushCache() {
-       Iterator<GlyphString> iterator = strings.values().iterator();
+       Iterator<GlyphString> iterator = stringCacheMap.values().iterator();
        while(iterator.hasNext()){
            GlyphString glyphString = iterator.next();
            glyphString.destroy();
        }
-       strings.clear();    
-   }       
+       stringCacheMap.clear();    
+       stringCacheArray.clear();
+   }
+   
+   public final void setCacheMaxSize(int newSize ) { stringCacheMaxSize = newSize; validateCache(0); }
+   public final int getCacheMaxSize() { return stringCacheMaxSize; }
+   public final int getCacheSize() { return stringCacheArray.size(); }
+   
+   protected void validateCache(int space) {
+       while ( getCacheSize() + space > getCacheMaxSize() ) {
+           String key = stringCacheArray.remove(0);
+           stringCacheMap.remove(key);
+       }
+   }
+   
+   protected GlyphString getCachedGlyphString(Font font, String str, int fontSize) {
+       final String key = font.getName() + "." + str.hashCode() + "." + fontSize;
+       return stringCacheMap.get(key);
+   }
+
+   protected void addCachedGlyphString(Font font, String str, int fontSize, GlyphString glyphString) {
+       final String key = font.getName() + "." + str.hashCode() + "." + fontSize;
+       validateCache(1);
+       stringCacheMap.put(key, glyphString);
+       stringCacheArray.add(stringCacheArray.size(), key);
+   }
+
+   // Cache is adding at the end of the array
+   public static final int DEFAULT_CACHE_SIZE = 32;
+   private HashMap<String, GlyphString> stringCacheMap = new HashMap<String, GlyphString>(DEFAULT_CACHE_SIZE);
+   private ArrayList<String> stringCacheArray = new ArrayList<String>(DEFAULT_CACHE_SIZE);
+   private int stringCacheMaxSize = DEFAULT_CACHE_SIZE; // -1 unlimited, 0 off, >0 limited      
 }
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