From: kiramt <k.mourao@dundee.ac.uk>
Date: Wed, 3 May 2017 13:55:08 +0000 (+0100)
Subject: JAL-2491 Wrapped panel scrolling
X-Git-Tag: Release_2_10_2~3^2~64^2~26
X-Git-Url: http://source.jalview.org/gitweb/?a=commitdiff_plain;h=43c2cb35733f4c3427ad8cc41ea55a52912980a2;p=jalview.git

JAL-2491 Wrapped panel scrolling
---

diff --git a/src/jalview/gui/AlignmentPanel.java b/src/jalview/gui/AlignmentPanel.java
index 4e5158d..a2773e8 100644
--- a/src/jalview/gui/AlignmentPanel.java
+++ b/src/jalview/gui/AlignmentPanel.java
@@ -702,62 +702,66 @@ public class AlignmentPanel extends GAlignmentPanel implements
     {
       return;
     }
-    int width = av.getAlignment().getWidth();
-    int height = av.getAlignment().getHeight();
 
-    if (av.hasHiddenColumns())
+    if (av.getWrapAlignment())
     {
-      // reset the width to exclude hidden columns
-      width = av.getColumnSelection().findColumnPosition(width);
+      setScrollingForWrappedPanel(x, y);
     }
+    else
+    {
 
-    hextent = getSeqPanel().seqCanvas.getWidth() / av.getCharWidth();
-    vextent = getSeqPanel().seqCanvas.getHeight() / av.getCharHeight();
+      int width = av.getAlignment().getWidth();
+      int height = av.getAlignment().getHeight();
 
-    if (hextent > width)
-    {
-      hextent = width;
-    }
+      if (av.hasHiddenColumns())
+      {
+        // reset the width to exclude hidden columns
+        width = av.getColumnSelection().findColumnPosition(width);
+      }
 
-    if (vextent > height)
-    {
-      vextent = height;
-    }
+      hextent = getSeqPanel().seqCanvas.getWidth() / av.getCharWidth();
+      vextent = getSeqPanel().seqCanvas.getHeight() / av.getCharHeight();
 
-    if ((hextent + x) > width)
-    {
-      x = width - hextent;
-    }
+      if (hextent > width)
+      {
+        hextent = width;
+      }
 
-    if ((vextent + y) > height)
-    {
-      y = height - vextent;
-    }
+      if (vextent > height)
+      {
+        vextent = height;
+      }
 
-    if (y < 0)
-    {
-      y = 0;
-    }
+      if ((hextent + x) > width)
+      {
+        x = width - hextent;
+      }
 
-    if (x < 0)
-    {
-      x = 0;
-    }
+      if ((vextent + y) > height)
+      {
+        y = height - vextent;
+      }
 
-    // update endRes after x has (possibly) been adjusted
-    // vpRanges.setEndRes((x + (getSeqPanel().seqCanvas.getWidth() / av
-    // .getCharWidth())) - 1);
+      if (y < 0)
+      {
+        y = 0;
+      }
 
-    /*
-     * each scroll adjustment triggers adjustmentValueChanged, which resets the
-     * 'do not scroll complement' flag; ensure it is the same for both
-     * operations
-     */
-    // boolean flag = isDontScrollComplement();
-    hscroll.setValues(x, hextent, 0, width);
-    // setDontScrollComplement(flag);
-    vscroll.setValues(y, vextent, 0, height);
+      if (x < 0)
+      {
+        x = 0;
+      }
 
+      /*
+       * each scroll adjustment triggers adjustmentValueChanged, which resets the
+       * 'do not scroll complement' flag; ensure it is the same for both
+       * operations
+       */
+      // boolean flag = isDontScrollComplement();
+      hscroll.setValues(x, hextent, 0, width);
+      // setDontScrollComplement(flag);
+      vscroll.setValues(y, vextent, 0, height);
+    }
   }
 
   /**
@@ -772,43 +776,24 @@ public class AlignmentPanel extends GAlignmentPanel implements
     int oldX = vpRanges.getStartRes();
     int oldY = vpRanges.getStartSeq();
 
-    // check for horizontal scroll with wrapped alignment
-    // as this can happen via triggered events (and we don't want to hscroll
-    // when wrapped)
-    if (evt.getSource() == hscroll && !av.getWrapAlignment())
+    if (av.getWrapAlignment())
     {
-      int x = hscroll.getValue();
-      if (x == oldX)
+      if (evt.getSource() == hscroll)
       {
-        return;
+        return; // no horizontal scroll when wrapped
       }
-      // vpRanges.setStartRes(x);
-      // vpRanges.setEndRes((x + (getSeqPanel().seqCanvas.getWidth() / av
-      // .getCharWidth())) - 1);
-      vpRanges.setStartEndRes(
-              x,
-              (x + (getSeqPanel().seqCanvas.getWidth() / av
-              .getCharWidth())) - 1);
-    }
-
-    if (evt.getSource() == vscroll)
-    {
-      int offy = vscroll.getValue();
-
-      if (av.getWrapAlignment())
+      else if (evt.getSource() == vscroll)
       {
-        if (offy == oldX)
+        int offy = vscroll.getValue();
+        int rowSize = getSeqPanel().seqCanvas
+                .getWrappedCanvasWidth(getSeqPanel().seqCanvas.getWidth());
+        if (offy * rowSize == oldX)
         {
           return;
         }
-        if (offy > -1)
+        else if (offy > -1)
         {
-          int rowSize = getSeqPanel().seqCanvas
-                  .getWrappedCanvasWidth(getSeqPanel().seqCanvas.getWidth());
           vpRanges.setStartEndRes(offy * rowSize, (offy + 1) * rowSize);
-          // vpRanges.setStartRes(offy * rowSize);
-          // vpRanges.setEndRes((offy + 1) * rowSize);
-
         }
         else
         {
@@ -826,73 +811,40 @@ public class AlignmentPanel extends GAlignmentPanel implements
           });
         }
       }
-      else
+      repaint();
+    }
+    else
+    {
+      // horizontal scroll
+      if (evt.getSource() == hscroll)
+      {
+        int x = hscroll.getValue();
+        if (x == oldX)
+        {
+          return;
+        }
+        vpRanges.setStartEndRes(x,
+                (x + (getSeqPanel().seqCanvas.getWidth() / av
+                        .getCharWidth())) - 1);
+      }
+      else if (evt.getSource() == vscroll)
       {
+        int offy = vscroll.getValue();
         if (offy == oldY)
         {
           return;
         }
-        // vpRanges.setStartSeq(offy);
-        // vpRanges.setEndSeq(offy
-        // + (getSeqPanel().seqCanvas.getHeight() / av.getCharHeight())
-        // - 1);
         vpRanges.setStartEndSeq(
                 offy,
                 offy
                         + (getSeqPanel().seqCanvas.getHeight() / av
                                 .getCharHeight()) - 1);
       }
+      if (!fastPaint)
+      {
+        repaint();
+      }
     }
-
-    /*if (overviewPanel != null)
-    {
-      overviewPanel.setBoxPosition();
-    }*/
-
-    // int scrollX = vpRanges.getStartRes() - oldX;
-    // int scrollY = vpRanges.getStartSeq() - oldY;
-
-    if (av.getWrapAlignment() || !fastPaint)
-    {
-      repaint();
-    }
-    /*   else
-       {
-         // Make sure we're not trying to draw a panel
-         // larger than the visible window
-         if (scrollX > vpRanges.getEndRes() - vpRanges.getStartRes())
-         {
-           scrollX = vpRanges.getEndRes() - vpRanges.getStartRes();
-         }
-         else if (scrollX < vpRanges.getStartRes() - vpRanges.getEndRes())
-         {
-           scrollX = vpRanges.getStartRes() - vpRanges.getEndRes();
-         }
-
-         if (scrollX != 0 || scrollY != 0)
-         {
-           getIdPanel().getIdCanvas().fastPaint(scrollY);
-           getSeqPanel().seqCanvas.fastPaint(scrollX, scrollY);
-           getScalePanel().repaint();
-
-           if (av.isShowAnnotation() && scrollX != 0)
-           {
-             getAnnotationPanel().fastPaint(scrollX);
-           }
-         }
-       }
-       /*
-        * If there is one, scroll the (Protein/cDNA) complementary alignment to
-        * match, unless we are ourselves doing that.
-        */
-    /*   if (isDontScrollComplement())
-       {
-         setDontScrollComplement(false);
-       }
-       else
-       {
-         av.scrollComplementaryAlignment();
-       }*/
   }
 
   /**
@@ -940,33 +892,33 @@ public class AlignmentPanel extends GAlignmentPanel implements
      * set scroll bar positions; first suppress this being 'followed' in any
      * complementary split pane
      */
-    setDontScrollComplement(true);
 
-    if (av.getWrapAlignment())
-    {
-      int maxwidth = av.getAlignment().getWidth();
+    // setDontScrollComplement(true);
+    setScrollValues(vpRanges.getStartRes(), vpRanges.getStartSeq());
+  }
 
-      if (av.hasHiddenColumns())
-      {
-        maxwidth = av.getColumnSelection().findColumnPosition(maxwidth) - 1;
-      }
+  /*
+   * Set vertical scroll bar parameters for wrapped panel
+   */
+  private void setScrollingForWrappedPanel(int x, int y)
+  {
+    int maxwidth = av.getAlignment().getWidth();
 
-      int canvasWidth = getSeqPanel().seqCanvas
-              .getWrappedCanvasWidth(getSeqPanel().seqCanvas.getWidth());
-      if (canvasWidth > 0)
-      {
-        int max = maxwidth
-                / getSeqPanel().seqCanvas
-                        .getWrappedCanvasWidth(getSeqPanel().seqCanvas
-                                .getWidth()) + 1;
-        vscroll.setMaximum(max);
-        vscroll.setUnitIncrement(1);
-        vscroll.setVisibleAmount(1);
-      }
-    }
-    else
+    if (av.hasHiddenColumns())
     {
-      setScrollValues(vpRanges.getStartRes(), vpRanges.getStartSeq());
+      maxwidth = av.getColumnSelection().findColumnPosition(maxwidth) - 1;
+    }
+
+    int canvasWidth = getSeqPanel().seqCanvas
+            .getWrappedCanvasWidth(getSeqPanel().seqCanvas.getWidth());
+    if (canvasWidth > 0)
+    {
+      int current = x / canvasWidth;
+      int max = maxwidth / canvasWidth + 1;
+      vscroll.setMaximum(max);
+      vscroll.setUnitIncrement(1);
+      vscroll.setVisibleAmount(1);
+      vscroll.setValues(current, 1, 0, max);
     }
   }
 
diff --git a/src/jalview/gui/SeqCanvas.java b/src/jalview/gui/SeqCanvas.java
index 7b8dd92..df953a2 100755
--- a/src/jalview/gui/SeqCanvas.java
+++ b/src/jalview/gui/SeqCanvas.java
@@ -983,29 +983,34 @@ public class SeqCanvas extends JComponent implements ViewportListenerI
   @Override
   public void propertyChange(PropertyChangeEvent evt)
   {
+    if (av.getWrapAlignment())
+    {
 
-    if (evt.getPropertyName().equals("startres")
-            || evt.getPropertyName().equals("endres"))
+    }
+    else
     {
-      // Make sure we're not trying to draw a panel
-      // larger than the visible window
-      ViewportRanges vpRanges = av.getRanges();
-      int scrollX = (int) evt.getNewValue() - (int) evt.getOldValue();
-      if (scrollX > vpRanges.getEndRes() - vpRanges.getStartRes())
+      if (evt.getPropertyName().equals("startres")
+              || evt.getPropertyName().equals("endres"))
       {
-        scrollX = vpRanges.getEndRes() - vpRanges.getStartRes();
+        // Make sure we're not trying to draw a panel
+        // larger than the visible window
+        ViewportRanges vpRanges = av.getRanges();
+        int scrollX = (int) evt.getNewValue() - (int) evt.getOldValue();
+        if (scrollX > vpRanges.getEndRes() - vpRanges.getStartRes())
+        {
+          scrollX = vpRanges.getEndRes() - vpRanges.getStartRes();
+        }
+        else if (scrollX < vpRanges.getStartRes() - vpRanges.getEndRes())
+        {
+          scrollX = vpRanges.getStartRes() - vpRanges.getEndRes();
+        }
+        fastPaint(scrollX, 0);
       }
-      else if (scrollX < vpRanges.getStartRes() - vpRanges.getEndRes())
+      else if (evt.getPropertyName() == "startseq"
+              || evt.getPropertyName() == "endseq")
       {
-        scrollX = vpRanges.getStartRes() - vpRanges.getEndRes();
+        fastPaint(0, (int) evt.getNewValue() - (int) evt.getOldValue());
       }
-      fastPaint(scrollX, 0);
     }
-    else if (evt.getPropertyName() == "startseq"
-            || evt.getPropertyName() == "endseq")
-    {
-      fastPaint(0, (int) evt.getNewValue() - (int) evt.getOldValue());
-    }
-
   }
 }