public GraphPanel()
{
InitializeComponent();
this.DoubleBuffered = true; // to prevent the flashing when drawing
// Default Setting behaviour
this.m_scrollX = 0;
this.m_scrollY = 0;
this.m_view = new GraphView(this);
this.m_editMode = GraphEditMode.None;
this.m_SelectBoxOrigin = new Point();
this.m_SelectBoxCurrent = new Point();
this.m_SelectionFill = new SolidBrush(Color.FromArgb(255, 245, 244, 0));
this.m_selectionOutline = new Pen(Color.FromArgb(255, 255, 0, 0));
}
private void GraphPanel_MouseUp(object sender, MouseEventArgs e)
{
switch (this.m_editMode)
{
case GraphEditMode.Selecting:
break;
case GraphEditMode.SelectingBox:
if (e.Button == MouseButtons.Left)
{
this.m_editMode = GraphEditMode.None;
this.Invalidate();
}
break;
default:
break;
}
}
private void GraphPanel_MouseDown(object sender, MouseEventArgs e)
{
switch (this.m_editMode)
{
case GraphEditMode.None:
switch (e.Button)
{
case MouseButtons.Middle:
this.m_editMode = GraphEditMode.Scrolling;// default scrolling using middle mouse
this.m_scrollX = e.Location.X;
this.m_scrollY = e.Location.Y;
break;
case MouseButtons.Left:
if (HitAll(e.Location) == HitType.Nothing)
{
this.m_editMode = GraphEditMode.SelectingBox;
this.m_SelectBoxOrigin = this.ControlToView(new Point(e.X, e.Y));
this.m_SelectBoxCurrent = this.ControlToView(new Point(e.X, e.Y));
this.UpdateHightlight();
}
break;
default:
break;
}
break;
case GraphEditMode.SelectingBox:
break;
case GraphEditMode.MovingSelection:
break;
default:
break;
}
}
