/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnDraw(MapDrawArgs e)
{
if (_isDragging)
{
Rectangle r = Opp.RectangleFromPoints(_startPoint, _currentPoint);
r.Width -= 1;
r.Height -= 1;
e.Graphics.DrawRectangle(Pens.White, r);
e.Graphics.DrawRectangle(_selectionPen, r);
}
if (_doSelect)
{
foreach (IMapLayer lyr in Map.MapFrame.Layers)
{
IMapFeatureLayer fl = lyr as IMapFeatureLayer;
if (fl == null)
{
continue;
}
IMapLabelLayer gll = fl.LabelLayer;
//gll.Select(_selectionEnvelope, e); // using this form of selection can test the actual pixel rectangles
if (gll != null)
{
gll.Invalidate();
}
}
_doSelect = false;
_selectTimer.Start();
}
base.OnDraw(e);
}
/// <summary>
/// Handles the Mouse Up situation
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(GeoMouseArgs e)
{
_currentPoint = e.Location;
_isDragging = false;
Map.Invalidate();
if (_geoStartPoint != null)
{
_selectionEnvelope = new Envelope(_geoStartPoint.X, e.GeographicLocation.X, _geoStartPoint.Y,
e.GeographicLocation.Y);
}
// If they are not pressing shift, then first clear the selection before adding new members to it.
if (((Control.ModifierKeys & Keys.Shift) == Keys.Shift) == false)
{
foreach (IMapLayer lyr in Map.MapFrame.Layers)
{
IMapFeatureLayer fl = lyr as IMapFeatureLayer;
if (fl == null)
{
continue;
}
IMapLabelLayer gll = fl.LabelLayer;
if (gll != null)
{
gll.ClearSelection();
}
}
}
_doSelect = true;
e.Map.MapFrame.ResetBuffer();
e.Map.Invalidate();
base.OnMouseUp(e);
}
/// <summary>
/// A default method to generate a label layer.
/// </summary>
protected override void OnCreateLabels()
{
LabelLayer = new MapLabelLayer(this);
}
/// <summary>
/// A default method to generate a label layer.
/// </summary>
protected override void OnCreateLabels()
{
LabelLayer = new MapLabelLayer(this);
}
