/// <summary>
/// 在鼠标向下时发生
/// </summary>
protected override void OnMouseDown(MouseEventArgs e)
{
_isMouseDownInTabButton = false;
_isMovingTabButton = false;
if (IsMouseOverScrollBackButton)
{
IsMouseDownInScrollBackButton = true;
ScrollBack();
}
else if (IsMouseOverScrollNextButton)
{
IsMouseDownInScrollNextButton = true;
ScrollNext();
}
else if (_captionButtonsBounds.Contains(e.Location))
{
int captionIndex = ButtonsRenderer.GetCaptionButtonIndex(_captionButtonsBounds, e.Location);
OnMouseDownInCaptionButton(captionIndex, e);
}
else
{
int index = 0;
UnitButton button = GetButtonFromPoint(e.Location, out index);
if (button != null)
{
SelectedIndex = index;
Invalidate();
_isMouseDownInTabButton = e.Button == MouseButtons.Left;
OnMouseDownInTabButton(button);
}
}
base.OnMouseDown(e);
}
/// <summary>
/// 当鼠标光标移到面板上时发生
/// </summary>
protected override void OnMouseMove(MouseEventArgs e)
{
Cursor cursor = Cursors.Default;
if (_isMouseDownInTabButton && e.Button == MouseButtons.Left)
{
cursor = Cursors.Hand;
if (_isMovingTabButton)
{
UnitButton selected = _buttons[SelectedIndex];
if (selected.Contains(e.Location) == false)
{
if (_isDraggingTabButton)
{
ContinueButtonDrag(e.Location, ref cursor);
}
else
{
int index = -1;
UnitButton underMouse = GetButtonFromPoint(e.Location, true, out index);
if (underMouse != null)
{
bool displace = false;
if (underMouse == _buttonDisplaced)
{
if (index < SelectedIndex)
{
displace = ButtonsRenderer.CanUndoDisplaceBack(underMouse, selected, e.Location);
}
else if (index > SelectedIndex)
{
displace = ButtonsRenderer.CanUndoDisplaceNext(underMouse, selected, e.Location);
}
}
_buttonDisplaced = underMouse;
if (displace)
{
_buttons[index] = selected;
_buttons[SelectedIndex] = underMouse;
_updatePositionsOnDraw = true;
SelectedIndex = index;
}
}
else
{
_isDraggingTabButton = BeginButtonDrag(selected, e.Location, ref cursor);
}
}
}
}
else
{
_isMovingTabButton = _buttons[SelectedIndex].Contains(e.Location);
_isDraggingTabButton = false;
}
}
else if (GetButtonFromPoint(e.Location) != null)
{
cursor = Cursors.Hand;
}
CheckIfIsMouseOverScrollButtons(e.Location);
if (IsMouseOverScrollBackButton && _firstShownButtonIndex > 0)
{
cursor = Cursors.Hand;
}
else if (IsMouseOverScrollNextButton && _canScrollNext)
{
cursor = Cursors.Hand;
}
int captionIndex = ButtonsRenderer.GetCaptionButtonIndex(_captionButtonsBounds, e.Location);
if (captionIndex < 0 || captionIndex >= ButtonsCount)
{
captionIndex = -1;
}
else
{
cursor = Cursors.Hand;
}
if (_captionButtonIndexUnderMouse != captionIndex)
{
_captionButtonIndexUnderMouse = captionIndex;
OnMouseMoveOverCaptionButton(captionIndex, e);
Invalidate();
}
int buttonIndex = -1;
UnitButton buttonUnderMouse = GetButtonFromPoint(e.Location, false, out buttonIndex);
if (buttonUnderMouse != null)
{
OnMouseMoveOverTabButton(buttonUnderMouse);
}
Cursor = cursor;
base.OnMouseMove(e);
}