/// <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();
}
/// <summary>
/// Mouse is moved.
/// None button is pressed, ot left button is pressed.
/// </summary>
/// <param name="DrawRegion"></param>
/// <param name="e"></param>
public override void OnMouseMove(DrawRegion drawRegion, MouseEventArgs e)
{
Point point = new Point(e.X, e.Y);
drawRegion.DrawNetRectangle = true;
lastPoint.X = e.X;
lastPoint.Y = e.Y;
drawRegion.IsNormal = lastPoint.X > startPoint.X;
drawRegion.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint);
drawRegion.Refresh();
return;
// set cursor when mouse button is not pressed
if (e.Button == MouseButtons.None)
{
Cursor cursor = null;
for (int i = 0; i < drawRegion.GraphicsList.Count; i++)
{
int n = drawRegion.GraphicsList[i].HitTest(point);
if (n > 0)
{
cursor = drawRegion.GraphicsList[i].GetHandleCursor(n);
}
if (n == 0 || drawRegion.GraphicsList[i].Selected)
{
drawRegion.GraphicsList[i].SetHighlight();
}
else
{
drawRegion.GraphicsList[i].CancelHighlight();
}
}
if (cursor == null)
{
cursor = Cursors.Default;
}
drawRegion.Cursor = cursor;
drawRegion.Refresh();
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;
if (selectMode == SelectionMode.NetSelection)
{
drawRegion.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint);
drawRegion.Refresh();
return;
}
}
/// <summary>
/// Left mouse button is released
/// </summary>
/// <param name="DrawRegion"></param>
/// <param name="e"></param>
public virtual void OnMouseUp(DrawRegion drawRegion, MouseEventArgs e)
{
}
