public void RollbackEdit()
{
_actionsRecord = false;
_currentAction.Undo();
_currentAction = null;
_actionsRecord = true;
}
public void DrawPixel(int frame, int x, int y, byte color)
{
if (x < 0 || x >= _sprite[frame].Width || y < 0 || y >= _sprite[frame].Height)
{
return;
}
if (_sprite[frame][x, y] == color)
{
return;
}
if (_actionsRecord)
{
if (!(_currentAction is PaintAction))
{
CommitEdit();
_currentAction = new PaintAction(this);
}
PaintAction action = (PaintAction)_currentAction;
action.DrawPixel(frame, x, y, _sprite[frame][x, y], color);
}
_sprite[frame][x, y] = color;
if (frame == _currentFrame)
{
_bmp.SetPixel(x, y, _palette[color]);
InvalidatePixel(x, y);
}
}
public void CommitEdit()
{
if (_currentAction != null)
{
_undoStack.Add(_currentAction);
while (_undoStack.Count > UndoStackLength)
{
_undoStack.RemoveAt(0);
}
_redoStack.Clear();
_currentAction = null;
}
}
public void Redo()
{
if (_redoStack.Count > 0)
{
EditAction action = _redoStack[_redoStack.Count - 1];
_actionsRecord = false;
action.Redo();
_actionsRecord = true;
_redoStack.Remove(action);
_undoStack.Add(action);
}
}
public void Undo()
{
if (_currentAction != null)
{
_currentAction.Undo();
}
else if (_undoStack.Count > 0)
{
EditAction action = _undoStack[_undoStack.Count - 1];
_actionsRecord = false;
action.Undo();
_actionsRecord = true;
_undoStack.Remove(action);
_redoStack.Add(action);
}
}