Mercurial > hg > orthanc-stone
diff Framework/Scene2DViewport/UndoStack.cpp @ 858:e3c56d4f863f
GuiAdapter : mouse event routing in SDL + split the undo stack from the
ViewportController for multi-canvas apps + adapted the samples to this change
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Mon, 24 Jun 2019 10:31:04 +0200 |
parents | |
children | ac88989817e3 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Scene2DViewport/UndoStack.cpp Mon Jun 24 10:31:04 2019 +0200 @@ -0,0 +1,68 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2019 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + +#include "UndoStack.h" + +#include "MeasureCommands.h" + +#include "../StoneException.h" + +namespace OrthancStone +{ + UndoStack::UndoStack() : numAppliedCommands_(0) + {} + + void UndoStack::PushCommand(boost::shared_ptr<TrackerCommand> command) + { + commandStack_.erase( + commandStack_.begin() + numAppliedCommands_, + commandStack_.end()); + + ORTHANC_ASSERT(std::find(commandStack_.begin(), commandStack_.end(), command) + == commandStack_.end(), "Duplicate command"); + commandStack_.push_back(command); + numAppliedCommands_++; + } + + void UndoStack::Undo() + { + ORTHANC_ASSERT(CanUndo(), ""); + commandStack_[numAppliedCommands_ - 1]->Undo(); + numAppliedCommands_--; + } + + void UndoStack::Redo() + { + ORTHANC_ASSERT(CanRedo(), ""); + commandStack_[numAppliedCommands_]->Redo(); + numAppliedCommands_++; + } + + bool UndoStack::CanUndo() const + { + return numAppliedCommands_ > 0; + } + + bool UndoStack::CanRedo() const + { + return numAppliedCommands_ < commandStack_.size(); + } + +}