public abstract void MouseEvent(MouseEventData eventData);
public override void MouseEvent(MouseEventData eventData)
{
if (_currentSelectionMode != SelectionMode.Arbitrary2Nx2M)
{
if ((eventData.Event == MouseEventData.EventType.Down ||
eventData.Event == MouseEventData.EventType.Move) &&
eventData.Args.Button == MouseButtons.Left)
{
if (_currentSelection == _newSelection)
{
var imagePos = _renderer.GetImageCoordinate(new Vector2(eventData.Args.X, eventData.Args.Y));
_currentSelection.MoveTo(imagePos);
_drawable.SelectionUpdate();
}
}
}
else
{
var nw = new Vector2(_currentSelection.X0, _currentSelection.Y0);
var sw = new Vector2(_currentSelection.X0, _currentSelection.Y1);
var se = new Vector2(_currentSelection.X1, _currentSelection.Y1);
var ne = new Vector2(_currentSelection.X1, _currentSelection.Y0);
var cur = new Vector2(eventData.Args.X, eventData.Args.Y);
cur = _renderer.GetImageCoordinate(cur);
var editRadius = 5f;
var action = SelectionEditAction.None;
if (cur.InRadius(se, editRadius))
{
action = SelectionEditAction.ResizeSE;
}
else if (cur.InRadius(ne, editRadius))
{
action = SelectionEditAction.ResizeNE;
}
else if (cur.InRadius(nw, editRadius))
{
action = SelectionEditAction.ResizeNW;
}
else if (cur.InRadius(sw, editRadius))
{
action = SelectionEditAction.ResizeSW;
}
else if (cur.DistanceToSegment(nw, ne).Abs() < editRadius)
{
action = SelectionEditAction.ResizeN;
}
else if (cur.DistanceToSegment(ne, se).Abs() < editRadius)
{
action = SelectionEditAction.ResizeE;
}
else if (cur.DistanceToSegment(se, sw).Abs() < editRadius)
{
action = SelectionEditAction.ResizeS;
}
else if (cur.DistanceToSegment(nw, sw).Abs() < editRadius)
{
action = SelectionEditAction.ResizeW;
}
else if (_currentSelection.GetRectangle().ContainsPoint((int)cur.X, (int)cur.Y))
{
action = SelectionEditAction.Move;
}
if (action == SelectionEditAction.ResizeNW || action == SelectionEditAction.ResizeSE)
{
Cursor.Current = Cursors.SizeNWSE;
}
else if (action == SelectionEditAction.ResizeNE || action == SelectionEditAction.ResizeSW)
{
Cursor.Current = Cursors.SizeNESW;
}
else if (action == SelectionEditAction.ResizeN || action == SelectionEditAction.ResizeS)
{
Cursor.Current = Cursors.SizeNS;
}
else if (action == SelectionEditAction.ResizeW || action == SelectionEditAction.ResizeE)
{
Cursor.Current = Cursors.SizeWE;
}
else if (action == SelectionEditAction.Move)
{
Cursor.Current = Cursors.SizeAll;
}
else
{
Cursor.Current = Cursors.Default;
}
if (eventData.Event == MouseEventData.EventType.Down && eventData.Args.Button == MouseButtons.Left)
{
_prevCoord = cur;
_currentSelectionEditAction = action;
}
if (eventData.Event == MouseEventData.EventType.Up && eventData.Args.Button == MouseButtons.Left)
{
_currentSelectionEditAction = SelectionEditAction.None;
}
if (eventData.Event == MouseEventData.EventType.Move && eventData.Args.Button == MouseButtons.Left)
{
switch (_currentSelectionEditAction)
{
case SelectionEditAction.ResizeNW:
_currentSelection.X0 = (int)cur.X;
_currentSelection.Y0 = (int)cur.Y;
break;
case SelectionEditAction.ResizeSW:
_currentSelection.X0 = (int)cur.X;
_currentSelection.Y1 = (int)cur.Y;
break;
case SelectionEditAction.ResizeSE:
_currentSelection.X1 = (int)cur.X;
_currentSelection.Y1 = (int)cur.Y;
break;
case SelectionEditAction.ResizeNE:
_currentSelection.X1 = (int)cur.X;
_currentSelection.Y0 = (int)cur.Y;
break;
case SelectionEditAction.ResizeN:
_currentSelection.Y0 = (int)cur.Y;
break;
case SelectionEditAction.ResizeS:
_currentSelection.Y1 = (int)cur.Y;
break;
case SelectionEditAction.ResizeW:
_currentSelection.X0 = (int)cur.X;
break;
case SelectionEditAction.ResizeE:
_currentSelection.X1 = (int)cur.X;
break;
case SelectionEditAction.Move:
_currentSelection.MoveBy(cur - _prevCoord);
_prevCoord = cur;
break;
}
_currentSelection.Width = _currentSelection.Width - _currentSelection.Width % 2;
_currentSelection.Height = _currentSelection.Height - _currentSelection.Height % 2;
_drawable.SelectionUpdate();
}
}
UpdateInfoLabel();
}