From 73f676f55b23e12c75b2e56f5484c4280fc68aef Mon Sep 17 00:00:00 2001
From: Kenneth Russel <kbrussel@alum.mit.edu>
Date: Sun, 7 Jan 2007 01:40:19 +0000
Subject: Added new FlyingText demo to illustrate more advanced usage of the
 TextRenderer class; displays dynamically rotated, translated and colored
 text. Changed how setSmoothing() is handled by the TextureRenderer and
 stopped disabling smoothing in the TextRenderer. For the time being, not
 exposing this flag in that class to keep the API simple. Changed TextRenderer
 to also push/pop the texture matrix.

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1073 232f8b59-042b-4e1e-8c03-345bb8c30851
---
 .../com/sun/opengl/util/j2d/TextRenderer.java      | 14 ++++++++-
 .../com/sun/opengl/util/j2d/TextureRenderer.java   | 35 +++++++++++++---------
 2 files changed, 34 insertions(+), 15 deletions(-)

(limited to 'src/classes/com')

diff --git a/src/classes/com/sun/opengl/util/j2d/TextRenderer.java b/src/classes/com/sun/opengl/util/j2d/TextRenderer.java
index e97c31173..027f857fe 100755
--- a/src/classes/com/sun/opengl/util/j2d/TextRenderer.java
+++ b/src/classes/com/sun/opengl/util/j2d/TextRenderer.java
@@ -365,6 +365,19 @@ public class TextRenderer {
     }
   }
 
+  /** Disposes of all resources this TextRenderer is using. It is not
+      valid to use the TextRenderer after this method is called.
+
+      @throws GLException If an OpenGL context is not current when this method is called
+  */
+  public void dispose() throws GLException {
+    packer.dispose();
+    packer = null;
+    cachedBackingStore = null;
+    cachedGraphics = null;
+    cachedFontRenderContext = null;
+  }
+  
   //----------------------------------------------------------------------
   // Internals only below this point
   //
@@ -466,7 +479,6 @@ public class TextRenderer {
       // store (i.e., non-default Paint, foreground color, etc.), but
       // for now, let's just be more efficient
       TextureRenderer renderer = TextureRenderer.createAlphaOnlyRenderer(w, h);
-      renderer.setSmoothing(false);
       return renderer;
     }
 
diff --git a/src/classes/com/sun/opengl/util/j2d/TextureRenderer.java b/src/classes/com/sun/opengl/util/j2d/TextureRenderer.java
index 360a82b25..976806db3 100755
--- a/src/classes/com/sun/opengl/util/j2d/TextureRenderer.java
+++ b/src/classes/com/sun/opengl/util/j2d/TextureRenderer.java
@@ -74,6 +74,7 @@ public class TextureRenderer {
   // Whether smoothing is enabled for the OpenGL texture (switching
   // between GL_LINEAR and GL_NEAREST filtering)
   private boolean smoothing = true;
+  private boolean smoothingChanged;
 
   // The backing store itself
   private BufferedImage image;
@@ -179,24 +180,15 @@ public class TextureRenderer {
 
   /** Sets whether smoothing is enabled for the OpenGL texture; if so,
       uses GL_LINEAR interpolation for the minification and
-      magnification filters. Defaults to true.
+      magnification filters. Defaults to true. Changes to this setting
+      will not take effect until the next call to {@link
+      #beginOrthoRendering beginOrthoRendering}.
 
       @param smoothing whether smoothing is enabled for the OpenGL texture
-      @throws GLException If an OpenGL context is not current when this method is called
   */
-  public void setSmoothing(boolean smoothing) throws GLException {
+  public void setSmoothing(boolean smoothing) {
     this.smoothing = smoothing;
-    // This can be set lazily
-    if (texture != null) {
-      GL gl = GLU.getCurrentGL();
-      if (smoothing) {
-        texture.setTexParameteri(GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
-        texture.setTexParameteri(GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
-      } else {
-        texture.setTexParameteri(GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
-        texture.setTexParameteri(GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
-      }
-    }
+    smoothingChanged = true;
   }
 
   /** Returns whether smoothing is enabled for the OpenGL texture; see
@@ -308,12 +300,25 @@ public class TextureRenderer {
     gl.glMatrixMode(GL.GL_MODELVIEW);
     gl.glPushMatrix();
     gl.glLoadIdentity();
+    gl.glMatrixMode(GL.GL_TEXTURE);
+    gl.glPushMatrix();
+    gl.glLoadIdentity();
     gl.glEnable(GL.GL_BLEND);
     gl.glBlendFunc(GL.GL_ONE, GL.GL_ONE_MINUS_SRC_ALPHA);
     Texture texture = getTexture();
     texture.enable();
     texture.bind();
     gl.glTexEnvi(GL.GL_TEXTURE_ENV, GL.GL_TEXTURE_ENV_MODE, GL.GL_REPLACE);
+    if (smoothingChanged) {
+      smoothingChanged = false;
+      if (smoothing) {
+        texture.setTexParameteri(GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
+        texture.setTexParameteri(GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
+      } else {
+        texture.setTexParameteri(GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
+        texture.setTexParameteri(GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
+      }
+    }
   }
 
   /** Draws an orthographically projected rectangle containing all of
@@ -388,6 +393,8 @@ public class TextureRenderer {
     gl.glPopMatrix();
     gl.glMatrixMode(GL.GL_MODELVIEW);
     gl.glPopMatrix();
+    gl.glMatrixMode(GL.GL_TEXTURE);
+    gl.glPopMatrix();
     gl.glPopAttrib();
   }
 
-- 
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