/// <summary>
/// Left mouse button is pressed
/// </summary>
/// <param name="DrawRegion"></param>
/// <param name="e"></param>
public override void OnMouseDown(DrawRegion drawRegion, MouseEventArgs e)
{
selectMode = SelectionMode.None;
Point point = new Point(e.X, e.Y);
// Test for move (cursor is on the object)
if (selectMode == SelectionMode.None)
{
int n1 = drawRegion.GraphicsList.Count;
DrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (drawRegion.GraphicsList[i].HitTest(point) == 0)
{
o = drawRegion.GraphicsList[i];
break;
}
}
if (o != null)
{
selectMode = SelectionMode.Move;
o.Selected = true;
}
}
// Net selection
if (selectMode == SelectionMode.None)
{
selectMode = SelectionMode.NetSelection;
drawRegion.DrawNetRectangle = true;
}
lastPoint.X = e.X;
lastPoint.Y = e.Y;
startPoint.X = e.X;
startPoint.Y = e.Y;
drawRegion.Capture = true;
drawRegion.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint);
drawRegion.Refresh();
}
/// <summary>
/// Right mouse button is released
/// </summary>
/// <param name="DrawRegion"></param>
/// <param name="e"></param>
public override void OnMouseUp(DrawRegion drawRegion, MouseEventArgs e)
{
if (selectMode == SelectionMode.NetSelection)
{
// Group selection
drawRegion.GraphicsList.SelectInRectangle(drawRegion.NetRectangle);
selectMode = SelectionMode.None;
drawRegion.DrawNetRectangle = false;
}
if (resizedObject != null)
{
// after resizing
resizedObject.Normalize();
resizedObject = null;
}
drawRegion.Capture = false;
drawRegion.Refresh();
}
public void Add(DrawObject obj)
{
// insert to the top of z-order
graphicsList.Insert(0, obj);
}