GPUDisplayFrontendWayland.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 GPUDISPLAYFRONTENDWAYLAND_H
#define GPUDISPLAYFRONTENDWAYLAND_H
 
#include "GPUDisplayFrontend.h"
#include <pthread.h>
#include <wayland-client.h>
 
struct xdg_wm_base;
struct xdg_toplevel;
struct xdg_surface;
struct zxdg_decoration_manager_v1;
struct zxdg_toplevel_decoration_v1;
struct xkb_context;
struct xkb_keymap;
struct xkb_state;
 
namespace o2::gpu
{
class GPUDisplayFrontendWayland : public GPUDisplayFrontend
{
 public:
  GPUDisplayFrontendWayland();
  ~GPUDisplayFrontendWayland() override = default;
 
  void DisplayExit() override;
  void SwitchFullscreen(bool set) override;
  void ToggleMaximized(bool set) override;
  void SetVSync(bool enable) override;
  void OpenGLPrint(const char* s, float x, float y, float r, float g, float b, float a, bool fromBotton = true) override;
  void getSize(int32_t& width, int32_t& height) override;
  int32_t getVulkanSurface(void* instance, void* surface) override;
  uint32_t getReqVulkanExtensions(const char**& p) override;
 
 private:
  int32_t FrontendMain() override;
  int32_t GetKey(uint32_t key, uint32_t state);
  void createBuffer(uint32_t width, uint32_t height);
  void recreateBuffer(uint32_t width, uint32_t height);
 
  pthread_mutex_t mSemLockExit = PTHREAD_MUTEX_INITIALIZER;
  volatile bool mDisplayRunning = false;
 
  wl_display* mWayland = nullptr;
  wl_registry* mRegistry = nullptr;
 
  wl_compositor* mCompositor = nullptr;
  wl_seat* mSeat = nullptr;
  wl_pointer* mPointer = nullptr;
  wl_keyboard* mKeyboard = nullptr;
  xdg_wm_base* mXdgBase = nullptr;
  wl_shm* mShm = nullptr;
 
  wl_surface* mSurface = nullptr;
  xdg_surface* mXdgSurface = nullptr;
  xdg_toplevel* mXdgToplevel = nullptr;
 
  wl_output* mOutput = nullptr;
 
  int32_t mFd = 0;
  wl_shm_pool* mPool;
  wl_buffer* mBuffer;
 
  xkb_context* mXKBcontext = nullptr;
  xkb_keymap* mXKBkeymap = nullptr;
  xkb_state* mXKBstate = nullptr;
 
  zxdg_decoration_manager_v1* mDecManager = nullptr;
  // zxdg_toplevel_decoration_v1* mXdgDecoration = nullptr;
 
  int32_t mWidthRequested = 0;
  int32_t mHeightRequested = 0;
};
} // namespace o2::gpu
 
#endif