X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fappletgui%2FSeqCanvas.java;h=9de545261cec93715152ed7c8e92860e1fa6e585;hb=b4d2b6a2ed131265ed599db27de9b82aaf010400;hp=28aa9ba652b578ab82f379d0a91226b0621c3865;hpb=d1707d4c26db76cfeb640f0dbeb3e3427fd40eb7;p=jalview.git

diff --git a/src/jalview/appletgui/SeqCanvas.java b/src/jalview/appletgui/SeqCanvas.java
index 28aa9ba..9de5452 100755
--- a/src/jalview/appletgui/SeqCanvas.java
+++ b/src/jalview/appletgui/SeqCanvas.java
@@ -28,6 +28,7 @@ import jalview.datamodel.SequenceI;
 import jalview.renderer.ScaleRenderer;
 import jalview.renderer.ScaleRenderer.ScaleMark;
 import jalview.viewmodel.AlignmentViewport;
+import jalview.viewmodel.ViewportListenerI;
 import jalview.viewmodel.ViewportRanges;
 
 import java.awt.Color;
@@ -35,8 +36,10 @@ import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Image;
 import java.awt.Panel;
+import java.beans.PropertyChangeEvent;
+import java.util.List;
 
-public class SeqCanvas extends Panel
+public class SeqCanvas extends Panel implements ViewportListenerI
 {
   FeatureRenderer fr;
 
@@ -65,6 +68,8 @@ public class SeqCanvas extends Panel
     sr = new SequenceRenderer(av);
     PaintRefresher.Register(this, av.getSequenceSetId());
     updateViewport();
+
+    av.getRanges().addPropertyChangeListener(this);
   }
 
   int avcharHeight = 0, avcharWidth = 0;
@@ -415,6 +420,9 @@ public class SeqCanvas extends Panel
 
     FontMetrics fm = getFontMetrics(av.getFont());
 
+    LABEL_EAST = 0;
+    LABEL_WEST = 0;
+
     if (av.getScaleRightWrapped())
     {
       LABEL_EAST = fm.stringWidth(getMask());
@@ -436,17 +444,17 @@ public class SeqCanvas extends Panel
 
     av.setWrappedWidth(cWidth);
 
-    av.getRanges().setEndRes(av.getRanges().getStartRes() + cWidth);
+    av.getRanges().setViewportStartAndWidth(startRes, cWidth);
 
     int endx;
     int ypos = hgap;
 
-    int maxwidth = av.getAlignment().getWidth() - 1;
+    int maxwidth = av.getAlignment().getWidth();
 
     if (av.hasHiddenColumns())
     {
       maxwidth = av.getAlignment().getHiddenColumns()
-              .findColumnPosition(maxwidth) - 1;
+              .findColumnPosition(maxwidth);
     }
 
     while ((ypos <= canvasHeight) && (startRes < maxwidth))
@@ -483,11 +491,10 @@ public class SeqCanvas extends Panel
         HiddenColumns hidden = av.getAlignment().getHiddenColumns();
         g.setColor(Color.blue);
         int res;
-        for (int i = 0; i < hidden.getListOfCols()
-                .size(); i++)
+        List<Integer> positions = hidden.findHiddenRegionPositions();
+        for (int pos : positions)
         {
-          res = hidden.findHiddenRegionPosition(i)
-                  - startRes;
+          res = pos - startRes;
 
           if (res < 0 || res > endx - startRes)
           {
@@ -508,7 +515,7 @@ public class SeqCanvas extends Panel
         g.setClip(0, 0, cWidth * avcharWidth, canvasHeight);
       }
 
-      drawPanel(g, startRes, endx, 0, al.getHeight(), ypos);
+      drawPanel(g, startRes, endx, 0, al.getHeight() - 1, ypos);
       g.setClip(null);
 
       if (av.isShowAnnotation())
@@ -566,7 +573,7 @@ public class SeqCanvas extends Panel
       if (av.hasHiddenColumns())
       {
         HiddenColumns hidden = av.getAlignment().getHiddenColumns();
-        for (int[] region : hidden.getListOfCols())
+        for (int[] region : hidden.getHiddenColumnsCopy())
         {
           int hideStart = region[0];
           int hideEnd = region[1];
@@ -588,7 +595,7 @@ public class SeqCanvas extends Panel
             g1.setColor(Color.blue);
             g1.drawLine((blockEnd - blockStart + 1) * avcharWidth - 1,
                     0 + offset, (blockEnd - blockStart + 1) * avcharWidth
-                            - 1, (endSeq - startSeq) * avcharHeight
+                            - 1, (endSeq - startSeq + 1) * avcharHeight
                             + offset);
           }
 
@@ -866,4 +873,47 @@ public class SeqCanvas extends Panel
     repaint();
   }
 
+  @Override
+  public void propertyChange(PropertyChangeEvent evt)
+  {
+    String eventName = evt.getPropertyName();
+
+    if (!av.getWrapAlignment())
+    {
+      int scrollX = 0;
+      if (eventName.equals(ViewportRanges.STARTRES))
+      {
+        // Make sure we're not trying to draw a panel
+        // larger than the visible window
+        ViewportRanges vpRanges = av.getRanges();
+        scrollX = (int) evt.getNewValue() - (int) evt.getOldValue();
+        int range = vpRanges.getEndRes() - vpRanges.getStartRes();
+        if (scrollX > range)
+        {
+          scrollX = range;
+        }
+        else if (scrollX < -range)
+        {
+          scrollX = -range;
+        }
+      }
+
+      // Both scrolling and resizing change viewport ranges: scrolling changes
+      // both start and end points, but resize only changes end values.
+      // Here we only want to fastpaint on a scroll, with resize using a normal
+      // paint, so scroll events are identified as changes to the horizontal or
+      // vertical start value.
+      if (eventName.equals(ViewportRanges.STARTRES))
+      {
+        // scroll - startres and endres both change
+        fastPaint(scrollX, 0);
+      }
+      else if (eventName.equals(ViewportRanges.STARTSEQ))
+      {
+        // scroll
+        fastPaint(0, (int) evt.getNewValue() - (int) evt.getOldValue());
+      }
+    }
+  }
+
 }