X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fviewmodel%2FOverviewDimensions.java;h=f54c1eb7d64ee33e303037a8f4f9551495a529b0;hb=4a9a2fc8a1b1a66b21e66429083f27a6fc8541b9;hp=dd7eb1e19e201a4444838acc6a3beb0b064bc88b;hpb=c2e5d3d1ebe3b283bdde15637c590721cd6c5637;p=jalview.git

diff --git a/src/jalview/viewmodel/OverviewDimensions.java b/src/jalview/viewmodel/OverviewDimensions.java
index dd7eb1e..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
@@ -225,22 +263,50 @@ public abstract class OverviewDimensions
    */
   protected abstract void resetAlignmentDims();
 
-  protected void setBoxPosition(int startRes, int endRes, int startSeq,
-          int endSeq)
+  /*
+   * 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
-    // since the box includes both the start and end residues, add 1 to the
-    // difference
-    boxWidth = Math
-            .round((float) (endRes - startRes + 1) * width / alwidth);
+    boxWidth = Math.round((float) vpwidth * width / alwidth);
+
     // boxHeight is the height in sequences translated to pixels
-    boxHeight = Math.round((float) (endSeq - startSeq + 1)
-            * sequencesHeight / alheight);
+    boxHeight = Math.round((float) vpheight * sequencesHeight / alheight);
   }
+
+  /**
+   * Answers if a mouse position is in the overview's red box
+   * 
+   * @param x
+   *          mouse x position
+   * @param y
+   *          mouse y position
+   * @return true if (x,y) is inside the box
+   */
+  public boolean isPositionInBox(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);
+
 }
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