GPUDisplayGUI.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
#ifndef GPUDISPLAYGUI_H
#define GPUDISPLAYGUI_H
 
#define QT_BEGIN_NAMESPACE \
  namespace o2::gpu::qtgui \
  {
#define QT_END_NAMESPACE }
 
#include "GPUDisplayGUIChannel.h"
#include <QMainWindow>
#include <QTimer>
#include <memory>
 
class QKeyEvent;
 
QT_BEGIN_NAMESPACE
namespace Ui
{
class GPUDisplayGUI;
}
QT_END_NAMESPACE
 
namespace o2::gpu
{
class GPUDisplayGUI : public QMainWindow
{
  Q_OBJECT
 
 public:
  explicit GPUDisplayGUI(GPUDisplayGUIChannel& channel, QWidget* parent = nullptr);
  ~GPUDisplayGUI() override;
  void bringToFront();
 
 protected:
  void keyPressEvent(QKeyEvent* event) override;
 
 private:
  void timerTick(); // Exchange updates / settings with the display
  void applySettings();
  static int32_t translateKey(const QKeyEvent* event); // Qt key → display key code, -1 if not forwarded
 
  std::unique_ptr<Ui::GPUDisplayGUI> mUi;
  QTimer mTimer;
  GPUDisplayGUIChannel& mChannel;
  GPUDisplayGUIChannel::Update mUpdate; // Changes collected since the last tick
  GPUDisplayGUIChannel::State mState;   // Last state received from the display
  uint64_t mLastSentId = 0;             // Id of the last update sent
  uint64_t mLastAppliedId = 0;          // Id of the last update for which the display state was received
};
} // namespace o2::gpu
 
#endif // GPUDISPLAYGUI_H