X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fviewmodel%2FOverviewDimensions.java;h=f54c1eb7d64ee33e303037a8f4f9551495a529b0;hb=4a9a2fc8a1b1a66b21e66429083f27a6fc8541b9;hp=68318ee2ecf5987187920a52b448d180f5fa0b88;hpb=9db5c5efc51b819623790eaf1b7145dd2936d029;p=jalview.git

diff --git a/src/jalview/viewmodel/OverviewDimensions.java b/src/jalview/viewmodel/OverviewDimensions.java
index 68318ee..f54c1eb 100644
--- a/src/jalview/viewmodel/OverviewDimensions.java
+++ b/src/jalview/viewmodel/OverviewDimensions.java
@@ -192,6 +192,44 @@ public abstract class OverviewDimensions
           HiddenSequences hiddenSeqs, HiddenColumns hiddenCols);
 
   /**
+   * Update the viewport location from a mouse drag within the overview's box
+   * 
+   * @param mousex
+   *          x location of mouse
+   * @param mousey
+   *          y location of mouse
+   * @param hiddenSeqs
+   *          the alignment's hidden sequences
+   * @param hiddenCols
+   *          the alignment's hidden columns
+   */
+  public abstract void adjustViewportFromMouse(int mousex, int mousey,
+          HiddenSequences hiddenSeqs, HiddenColumns hiddenCols);
+
+  /**
+   * Initialise dragging from the mouse - must be called on initial mouse click
+   * before using adjustViewportFromMouse in drag operations
+   * 
+   * @param mousex
+   *          x location of mouse
+   * @param mousey
+   *          y location of mouse
+   * @param hiddenSeqs
+   *          the alignment's hidden sequences
+   * @param hiddenCols
+   *          the alignment's hidden columns
+   */
+  public abstract void setDragPoint(int x, int y,
+          HiddenSequences hiddenSeqs, HiddenColumns hiddenCols);
+
+  /*
+   * Move the viewport so that the top left corner of the overview's box 
+   * is at the mouse position (leftx, topy)
+   */
+  protected abstract void updateViewportFromTopLeft(int leftx, int topy,
+          HiddenSequences hiddenSeqs, HiddenColumns hiddenCols);
+
+  /**
    * Set the overview panel's box position to match the viewport
    * 
    * @param hiddenSeqs
@@ -225,13 +263,17 @@ public abstract class OverviewDimensions
    */
   protected abstract void resetAlignmentDims();
 
+  /*
+   * Given the box coordinates in residues and sequences, set the box dimensions in the overview window
+   */
   protected void setBoxPosition(int startRes, int startSeq, int vpwidth,
           int vpheight)
   {
     resetAlignmentDims();
 
     // boxX, boxY is the x,y location equivalent to startRes, startSeq
-    boxX = Math.round((float) startRes * width / alwidth);
+    int xPos = Math.min(startRes, alwidth - vpwidth + 1);
+    boxX = Math.round((float) xPos * width / alwidth);
     boxY = Math.round((float) startSeq * sequencesHeight / alheight);
 
     // boxWidth is the width in residues translated to pixels
@@ -252,17 +294,18 @@ public abstract class OverviewDimensions
    */
   public boolean isPositionInBox(int x, int y)
   {
-    return (x > boxX && y > boxY && boxX + x < boxWidth
-            && boxY + y < boxHeight);
-  }
-
-  public void setMousePosition(int x, int y)
-  {
-
+    return (x > boxX && y > boxY && x < boxX + boxWidth
+            && y < boxY + boxHeight);
   }
 
+  /*
+   * Given the centre x position, calculate the box's left x position
+   */
   protected abstract int getLeftXFromCentreX(int mousex, HiddenColumns hidden);
 
+  /*
+   * Given the centre y position, calculate the box's top y position
+   */
   protected abstract int getTopYFromCentreY(int mousey,
           HiddenSequences hidden);