Added a form of line wrap mode that does a hard

clip, to include truncating the letter quad at
the border.  This is better when text needs to
be hard constrained for UI type fields.


git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9947 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/font/BitmapText.java

@@ -382,6 +382,7 @@ public class BitmapText extends Node {
      * @param wrap NoWrap   : Letters over the text bound is not shown. the last character is set to '...'(0x2026)
      *             Character: Character is split at the end of the line.
      *             Word     : Word is split at the end of the line.
+     *             Clip     : The text is hard-clipped at the border including showing only a partial letter if it goes beyond the text bound.
      */
     public void setLineWrapMode(LineWrapMode wrap) {
         if (block.getLineWrapMode() != wrap) {

engine/src/core/com/jme3/font/LetterQuad.java

@@ -173,6 +173,23 @@ class LetterQuad {
         return x0 > 0 && bound.x+bound.width-gap < getX1();
     }
     
+    void clip(StringBlock block) {
+        Rectangle bound = block.getTextBox();
+        if (bound == null)
+            return;
+            
+        // Clip the right x position and texture coordinate
+        // to the string block
+        float x1 = Math.min(bound.x + bound.width, x0 + width);
+        float newWidth = x1 - x0;
+        if( newWidth == width )
+            return;
+            
+        float rescale = newWidth / width;
+        u1 = u0 + (u1 - u0) * rescale;
+        width = newWidth;  
+    }
+    
     float getX0() {
         return x0;
     }

engine/src/core/com/jme3/font/Letters.java

@@ -144,8 +144,7 @@ class Letters {
                             }
                         }
                         break;
-                    case NoWrap:
-                        // search last blank character before this word
+                    case NoWrap: 
                         LetterQuad cursor = l.getPrevious();
                         while (cursor.isInvalid(block, ellipsisWidth) && !cursor.isLineStart()) {
                             cursor = cursor.getPrevious();
@@ -159,6 +158,16 @@ class Letters {
                             cursor = cursor.getNext();
                         }
                         break;
+                    case Clip: 
+                        // Clip the character that falls out of bounds
+                        l.clip(block);
+                        
+                        // Clear the rest up to the next line feed.
+                        for( LetterQuad q = l.getNext(); !q.isTail() && !q.isLineFeed(); q = q.getNext() ) {
+                            q.setBitmapChar(null);
+                            q.update(block);
+                        }
+                        break;
                     }
                 }
             } else if (current.isInvalid(block)) {

engine/src/core/com/jme3/font/LineWrapMode.java

@@ -38,5 +38,6 @@ package com.jme3.font;
 public enum LineWrapMode {
     NoWrap,
     Character,
-    Word
+    Word,
+    Clip
 }