protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
// wpf generates to many events if mouse is over some visual
// and OnMouseUp is fired, wtf, anyway...
// http://greatmaps.codeplex.com/workitem/16013
if ((e.Timestamp & Int32.MaxValue) - onMouseUpTimestamp < 55)
{
Debug.WriteLine("OnMouseMove skipped: " + ((e.Timestamp & Int32.MaxValue) - onMouseUpTimestamp) + "ms");
return;
}
if (!Core.IsDragging && !Core.mouseDown.IsEmpty)
{
Point p = e.GetPosition(this);
if (MapScaleTransform != null)
{
p = MapScaleTransform.Inverse.Transform(p);
}
p = ApplyRotationInversion(p.X, p.Y);
// cursor has moved beyond drag tolerance
if (Math.Abs(p.X - Core.mouseDown.X) * 2 >= SystemParameters.MinimumHorizontalDragDistance || Math.Abs(p.Y - Core.mouseDown.Y) * 2 >= SystemParameters.MinimumVerticalDragDistance)
{
Core.BeginDrag(Core.mouseDown);
}
}
if (Core.IsDragging)
{
if (!isDragging)
{
isDragging = true;
Debug.WriteLine("IsDragging = " + isDragging);
cursorBefore = Cursor;
Cursor = Cursors.SizeAll;
Mouse.Capture(this);
}
if (BoundsOfMap.HasValue && !BoundsOfMap.Value.Contains(Position))
{
// ...
}
else
{
Point p = e.GetPosition(this);
if (MapScaleTransform != null)
{
p = MapScaleTransform.Inverse.Transform(p);
}
p = ApplyRotationInversion(p.X, p.Y);
Core.mouseCurrent.X = (int)p.X;
Core.mouseCurrent.Y = (int)p.Y;
{
Core.Drag(Core.mouseCurrent);
}
if (IsRotated || scaleMode != ScaleModes.Integer)
{
ForceUpdateOverlays();
}
else
{
UpdateMarkersOffset();
}
}
InvalidateVisual(true);
}
else
{
if (isSelected && !selectionStart.IsEmpty && (Keyboard.Modifiers == ModifierKeys.Shift ||
Keyboard.Modifiers == ModifierKeys.Alt || DisableAltForSelection))
{
System.Windows.Point p = e.GetPosition(this);
selectionEnd = FromLocalToLatLng((int)p.X, (int)p.Y);
{
PointLatLng p1 = selectionStart;
PointLatLng p2 = selectionEnd;
double x1 = Math.Min(p1.Lng, p2.Lng);
double y1 = Math.Max(p1.Lat, p2.Lat);
double x2 = Math.Max(p1.Lng, p2.Lng);
double y2 = Math.Min(p1.Lat, p2.Lat);
SelectedArea = new RectLatLng(y1, x1, x2 - x1, y1 - y2);
}
}
if (renderHelperLine)
{
InvalidateVisual(true);
}
}
}