protected internal override void OnMouseIsDown(BasicMouseEventArgs e)
{
ScrollBarState newState = ScrollBarState.Neutral;
bool ctrl = e.ControlPressed;
if (e.Y < CompoundScrollableControl.scrollBarWidth - 1)
{
if (ctrl)
{
newState = ScrollBarState.PressFirstBox;
MoveUp(main.DeltaUpToSelection());
}
else
{
newState = ScrollBarState.PressFirstBox;
MoveUp(main.DeltaY);
upThread = new Thread(() => WalkUp(main.DeltaY));
upThread.Start();
}
}
else if (e.Y > e.Height - CompoundScrollableControl.scrollBarWidth)
{
if (ctrl)
{
newState = ScrollBarState.PressSecondBox;
MoveDown(main.DeltaDownToSelection());
}
else
{
newState = ScrollBarState.PressSecondBox;
MoveDown(main.DeltaY);
downThread = new Thread(() => WalkDown(main.DeltaY));
downThread.Start();
}
}
else if (HasBar)
{
int s = CalcBarStart(e.Height);
int l = CalcBarSize(e.Height);
if (e.Y >= s && e.Y <= s + l)
{
newState = ScrollBarState.PressBar;
dragStart = e.Y;
visibleDragStart = main.VisibleY;
}
else if (e.Y < s)
{
MoveUp(main.VisibleHeight);
upThread = new Thread(() => WalkUp(main.VisibleHeight));
upThread.Start();
}
else
{
MoveDown(main.VisibleHeight);
downThread = new Thread(() => WalkDown(main.VisibleHeight));
downThread.Start();
}
}
if (newState != state)
{
state = newState;
Invalidate();
}
}
