MouseListener, MouseWheelListener, MouseMotionListener,
ActionListener, AdjustmentListener, Scrollable, ViewportListenerI
{
+ enum DragMode
+ {
+ Select, Resize, Undefined
+ };
+
String HELIX = MessageManager.getString("label.helix");
String SHEET = MessageManager.getString("label.sheet");
// Used For mouse Dragging and resizing graphs
int graphStretch = -1;
- int graphStretchY = -1;
+ int mouseDragLastX = -1;
- int min; // used by mouseDragged to see if user
+ int mouseDragLastY = -1;
- int max; // used by mouseDragged to see if user
+ DragMode dragMode = DragMode.Undefined;
boolean mouseDragging = false;
}
/**
- * DOCUMENT ME!
+ * Action on right mouse pressed on Mac is to show a pop-up menu for the
+ * annotation. Action on left mouse pressed is to find which annotation is
+ * pressed and mark the start of a column selection or graph resize operation.
*
* @param evt
- * DOCUMENT ME!
*/
@Override
public void mousePressed(MouseEvent evt)
{
return;
}
+ mouseDragLastX = evt.getX();
+ mouseDragLastY = evt.getY();
+ /*
+ * add visible annotation heights until we reach the y
+ * position, to find which annotation it is in
+ */
int height = 0;
activeRow = -1;
}
else if (aa[i].graph > 0)
{
- // Stretch Graph
+ /*
+ * we have clicked on a resizable graph annotation
+ */
graphStretch = i;
- graphStretchY = y;
}
-
break;
}
}
}
/**
- * DOCUMENT ME!
+ * Action on mouse up is to clear mouse drag data and call mouseReleased on
+ * ScalePanel, to deal with defining the selection group (if any) defined by
+ * the mouse drag
*
* @param evt
- * DOCUMENT ME!
*/
@Override
public void mouseReleased(MouseEvent evt)
{
graphStretch = -1;
- graphStretchY = -1;
+ mouseDragLastX = -1;
+ mouseDragLastY = -1;
mouseDragging = false;
+ if (dragMode == DragMode.Resize)
+ {
+ ap.adjustAnnotationHeight();
+ }
+ dragMode = DragMode.Undefined;
ap.getScalePanel().mouseReleased(evt);
/*
}
/**
- * DOCUMENT ME!
+ * Action on starting or continuing a mouse drag. There are two possible
+ * actions:
+ * <ul>
+ * <li>drag up or down on a graphed annotation increases or decreases the
+ * height of the graph</li>
+ * <li>dragging left or right selects the columns dragged across</li>
+ * </ul>
+ * A drag on a graph annotation is treated as column selection if it starts
+ * with more horizontal than vertical movement, and as resize if it starts
+ * with more vertical than horizontal movement. Once started, the drag does
+ * not change mode.
*
* @param evt
- * DOCUMENT ME!
*/
@Override
public void mouseDragged(MouseEvent evt)
{
- if (graphStretch > -1)
+ /*
+ * if dragMode is Undefined:
+ * - set to Select if dx > dy
+ * - set to Resize if dy > dx
+ * - do nothing if dx == dy
+ */
+ final int x = evt.getX();
+ final int y = evt.getY();
+ if (dragMode == DragMode.Undefined)
{
- av.getAlignment()
- .getAlignmentAnnotation()[graphStretch].graphHeight += graphStretchY
- - evt.getY();
- if (av.getAlignment()
- .getAlignmentAnnotation()[graphStretch].graphHeight < 0)
+ int dx = Math.abs(x - mouseDragLastX);
+ int dy = Math.abs(y - mouseDragLastY);
+ if (graphStretch == -1 || dx > dy)
+ {
+ /*
+ * mostly horizontal drag, or not a graph annotation
+ */
+ dragMode = DragMode.Select;
+ }
+ else if (dy > dx)
{
- av.getAlignment()
- .getAlignmentAnnotation()[graphStretch].graphHeight = 0;
+ /*
+ * mostly vertical drag
+ */
+ dragMode = DragMode.Resize;
}
- graphStretchY = evt.getY();
- adjustPanelHeight();
- ap.paintAlignment(false, false);
}
- else
+
+ if (dragMode == DragMode.Undefined)
+ {
+ /*
+ * drag is diagonal - defer deciding whether to
+ * treat as up/down or left/right
+ */
+ return;
+ }
+
+ try
+ {
+ if (dragMode == DragMode.Resize)
+ {
+ /*
+ * resize graph annotation if mouse was dragged up or down
+ */
+ int deltaY = mouseDragLastY - evt.getY();
+ if (deltaY != 0)
+ {
+ AlignmentAnnotation graphAnnotation = av.getAlignment()
+ .getAlignmentAnnotation()[graphStretch];
+ int newHeight = Math.max(0, graphAnnotation.graphHeight + deltaY);
+ graphAnnotation.graphHeight = newHeight;
+ adjustPanelHeight();
+ ap.paintAlignment(false, false);
+ }
+ }
+ else
+ {
+ /*
+ * for mouse drag left or right, delegate to
+ * ScalePanel to adjust the column selection
+ */
+ ap.getScalePanel().mouseDragged(evt);
+ }
+ } finally
{
- ap.getScalePanel().mouseDragged(evt);
+ mouseDragLastX = x;
+ mouseDragLastY = y;
}
}
int column = (evt.getX() / av.getCharWidth())
+ av.getRanges().getStartRes();
+ column = Math.min(column, av.getRanges().getEndRes());
if (av.hasHiddenColumns())
{