import jalview.util.MessageManager;
import jalview.util.Platform;
import jalview.viewmodel.AlignmentViewport;
+import jalview.viewmodel.ViewportRanges;
import java.awt.BorderLayout;
import java.awt.Color;
return;
}
- if (!editingSeqs)
+ if (editingSeqs)
+ {
+ endEditing();
+ }
+ else
{
doMouseReleasedDefineMode(evt, didDrag);
- return;
}
-
- endEditing();
}
/**
}
mouseDragging = true;
- if ((scrollThread != null) && (scrollThread.isRunning()))
+ if (scrollThread != null)
{
- scrollThread.setEvent(evt);
+ scrollThread.setMousePosition(evt.getPoint());
}
}
}
/**
- * DOCUMENT ME!
+ * On reentering the panel, stops any scrolling that was started on dragging
+ * out of the panel
*
* @param e
- * DOCUMENT ME!
*/
@Override
public void mouseEntered(MouseEvent e)
{
oldSeq = 0;
}
-
- if ((scrollThread != null) && (scrollThread.isRunning()))
- {
- scrollThread.stopScrolling();
- scrollThread = null;
- }
+ stopScrolling();
}
/**
- * DOCUMENT ME!
+ * On leaving the panel, if the mouse is being dragged, starts a thread to
+ * scroll it until the mouse is released (in unwrapped mode only)
*
* @param e
- * DOCUMENT ME!
*/
@Override
public void mouseExited(MouseEvent e)
{
- if (av.getWrapAlignment())
- {
- return;
- }
-
- if (mouseDragging && scrollThread == null)
+ if (!av.getWrapAlignment() && mouseDragging && scrollThread == null)
{
scrollThread = new ScrollThread();
}
return;
}
- if (res >= av.getAlignment().getWidth())
- {
- res = av.getAlignment().getWidth() - 1;
- }
+ res = Math.min(res, av.getAlignment().getWidth()-1);
if (stretchGroup.getEndRes() == res)
{
mouseDragging = true;
- if ((scrollThread != null) && (scrollThread.isRunning()))
+ if (scrollThread != null)
{
- scrollThread.setEvent(evt);
+ scrollThread.setMousePosition(evt.getPoint());
}
}
- void scrollCanvas(MouseEvent evt)
+ /**
+ * Stops the scroll thread if it is running
+ */
+ void stopScrolling()
{
- if (evt == null)
+ if (scrollThread != null)
{
- if ((scrollThread != null) && (scrollThread.isRunning()))
- {
- scrollThread.stopScrolling();
- scrollThread = null;
- }
- mouseDragging = false;
+ scrollThread.stopScrolling();
+ scrollThread = null;
}
- else
- {
- if (scrollThread == null)
- {
- scrollThread = new ScrollThread();
- }
+ mouseDragging = false;
+ }
- mouseDragging = true;
- scrollThread.setEvent(evt);
+ /**
+ * Starts a thread to scroll the alignment, towards a given mouse position
+ * outside the panel bounds
+ *
+ * @param mousePos
+ */
+ void startScrolling(Point mousePos)
+ {
+ if (scrollThread == null)
+ {
+ scrollThread = new ScrollThread();
}
+ mouseDragging = true;
+ scrollThread.setMousePosition(mousePos);
}
- // this class allows scrolling off the bottom of the visible alignment
+ /**
+ * Performs scrolling of the visible alignment left, right, up or down
+ */
class ScrollThread extends Thread
{
- MouseEvent evt;
+ private Point mousePos;
private volatile boolean threadRunning = true;
+ /**
+ * Constructor
+ */
public ScrollThread()
{
+ setName("SeqPanel$ScrollThread");
start();
}
- public void setEvent(MouseEvent e)
+ /**
+ * Sets the position of the mouse that determines the direction of the
+ * scroll to perform
+ *
+ * @param p
+ */
+ public void setMousePosition(Point p)
{
- evt = e;
+ mousePos = p;
}
+ /**
+ * Sets a flag that will cause the thread to exit
+ */
public void stopScrolling()
{
threadRunning = false;
}
- public boolean isRunning()
- {
- return threadRunning;
- }
-
+ /**
+ * Scrolls the alignment left or right, and/or up or down, depending on the
+ * last notified mouse position, until the limit of the alignment is
+ * reached, or a flag is set to stop the scroll
+ */
@Override
public void run()
{
- while (threadRunning)
+ while (threadRunning && mouseDragging)
{
- if (evt != null)
+ if (mousePos != null)
{
- if (mouseDragging && (evt.getY() < 0)
- && (av.getRanges().getStartSeq() > 0))
+ boolean scrolled = false;
+ ViewportRanges ranges = SeqPanel.this.av.getRanges();
+
+ /*
+ * scroll up or down
+ */
+ if (mousePos.y < 0)
{
- av.getRanges().scrollUp(true);
+ // mouse is above this panel - try scroll up
+ scrolled = ranges.scrollUp(true);
}
-
- if (mouseDragging && (evt.getY() >= getHeight()) && (av
- .getAlignment().getHeight() > av.getRanges().getEndSeq()))
+ else if (mousePos.y >= getHeight())
{
- av.getRanges().scrollUp(false);
+ // mouse is below this panel - try scroll down
+ scrolled = ranges.scrollUp(false);
}
- if (mouseDragging && (evt.getX() < 0))
+ /*
+ * scroll left or right
+ */
+ if (mousePos.x < 0)
{
- av.getRanges().scrollRight(false);
+ scrolled |= ranges.scrollRight(false);
}
- else if (mouseDragging && (evt.getX() >= getWidth()))
+ else if (mousePos.x >= getWidth())
{
- av.getRanges().scrollRight(true);
+ scrolled |= ranges.scrollRight(true);
+ }
+ if (!scrolled)
+ {
+ /*
+ * we have reached the limit of the visible alignment - quit
+ */
+ threadRunning = false;
+ SeqPanel.this.ap.repaint();
}
}