/// <summary>
/// Add new object to draw DrawArea.Control.
/// Function is called when user left-clicks draw area,
/// and one of ToolObject-derived tools is active.
/// </summary>
/// <param name="control"></param>
/// <param name="o"></param>
protected void AddNewObject(MapControl control, DrawObject o)
{
control.Objects.UnselectAll();
control.Add(o);
control.SetDirty();
}
/// <summary>
/// Mouse is moved.
/// None button is pressed, or left button is pressed.
/// </summary>
/// <param name="control"></param>
/// <param name="e"></param>
public override void OnMouseMove(MapControl control, MouseEventArgs e)
{
Point point = new Point(e.X, e.Y);
Point oldPoint = lastPoint;
wasMove = true;
// set cursor when mouse button is not pressed
if (e.Button == MouseButtons.None)
{
Cursor cursor = null;
for (int i = 0; i < control.Objects.Count; i++)
{
int n = control.Objects[i].HitTest(point);
if (n > 0)
{
cursor = control.Objects[i].GetHandleCursor(n);
break;
}
else if (n == 0)
{
cursor = Cursors.Hand;
break;
}
}
if (cursor == null)
{
cursor = Cursors.Default;
}
control.Cursor = cursor;
return;
}
if (e.Button != MouseButtons.Left)
{
return;
}
/// Left button is pressed
// Find difference between previous and current position
int dx = e.X - lastPoint.X;
int dy = e.Y - lastPoint.Y;
lastPoint.X = e.X;
lastPoint.Y = e.Y;
// resize
if (selectMode == SelectionMode.Size)
{
if (resizedObject != null)
{
resizedObject.MoveHandleTo(point, resizedObjectHandle);
control.Refresh();
control.SetDirty();
}
}
// move
if (selectMode == SelectionMode.Move)
{
foreach (DrawObject o in control.Objects.Selection)
{
o.Move(dx, dy);
}
control.Cursor = Cursors.Hand;
control.Refresh();
control.SetDirty();
}
if (selectMode == SelectionMode.NetSelection)
{
// Remove old selection rectangle
ControlPaint.DrawReversibleFrame(
control.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, oldPoint)),
Color.Black,
FrameStyle.Dashed);
// Draw new selection rectangle
ControlPaint.DrawReversibleFrame(
control.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, point)),
Color.Black,
FrameStyle.Dashed);
return;
}
}
