X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Frenderer%2FAwtRenderPanelI.java;h=99d670c132d6af072ed34cb16e5b2c105e3bc657;hb=25aaaa87042b3f507ad4348120df7dd073182759;hp=09b8c7c72e08e5837d33d50dcac38dc04277875b;hpb=57c960648b550f10c7db40e39c7bb6a761d732b1;p=jalview.git

diff --git a/src/jalview/renderer/AwtRenderPanelI.java b/src/jalview/renderer/AwtRenderPanelI.java
index 09b8c7c..99d670c 100644
--- a/src/jalview/renderer/AwtRenderPanelI.java
+++ b/src/jalview/renderer/AwtRenderPanelI.java
@@ -1,3 +1,23 @@
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2b1)
+ * Copyright (C) 2014 The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *  
+ * Jalview is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty 
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
 package jalview.renderer;
 
 import java.awt.FontMetrics;
@@ -7,12 +27,14 @@ import java.awt.image.ImageObserver;
 public interface AwtRenderPanelI extends ImageObserver
 {
   /**
-   * old image used when data is currently being calculated and cannot be rendered
+   * old image used when data is currently being calculated and cannot be
+   * rendered
    */
   Image getFadedImage();
 
   /**
    * FontMetrics to use for rendering into Panel
+   * 
    * @return
    */
   FontMetrics getFontMetrics();
@@ -22,4 +44,11 @@ public interface AwtRenderPanelI extends ImageObserver
    */
   int getFadedImageWidth();
 
+  /**
+   * height of visible area on to the image - used to draw only what is visible.
+   * 
+   * @return [start, end of visible region]
+   */
+  int[] getVisibleVRange();
+
 }