sdl2_v.h

Go to the documentation of this file.

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef VIDEO_SDL_H
#define VIDEO_SDL_H
 
#include <condition_variable>
 
#include "video_driver.hpp"

class VideoDriver_SDL_Base : public VideoDriver {
public:
  VideoDriver_SDL_Base(bool uses_hardware_acceleration = false) : VideoDriver(uses_hardware_acceleration) {}
 
  std::optional<std::string_view> Start(const StringList &param) override;
 
  void Stop() override;
 
  void MakeDirty(int left, int top, int width, int height) override;
 
  void MainLoop() override;
 
  bool ChangeResolution(int w, int h) override;
 
  bool ToggleFullscreen(bool fullscreen) override;
 
  bool AfterBlitterChange() override;
 
  void ClaimMousePointer() override;
 
  void EditBoxGainedFocus() override;
 
  void EditBoxLostFocus() override;
 
  std::vector<int> GetListOfMonitorRefreshRates() override;
 
  std::string_view GetInfoString() const override { return this->driver_info; }
 
  void SetScreensaverInhibited(bool inhibited) override;
 
protected:
  struct SDL_Window *sdl_window = nullptr; 
  Palette local_palette{}; 
  bool buffer_locked = false; 
  Rect dirty_rect{}; 
  std::string driver_info{}; 
 
  Dimension GetScreenSize() const override;
  void InputLoop() override;
  bool LockVideoBuffer() override;
  void UnlockVideoBuffer() override;
  void CheckPaletteAnim() override;
  bool PollEvent() override;
 
  void ClientSizeChanged(int w, int h, bool force);

  virtual bool AllocateBackingStore(int w, int h, bool force = false) = 0;

  virtual void *GetVideoPointer() = 0;

  virtual void ReleaseVideoPointer() = 0;

  virtual bool CreateMainWindow(uint w, uint h, uint flags = 0);
 
private:
  void LoopOnce();
  bool CreateMainSurface(uint w, uint h, bool resize);
  std::optional<std::string_view> Initialize();
 
#ifdef __EMSCRIPTEN__
  /* Convert a constant pointer back to a non-constant pointer to a member function. */
  static void EmscriptenLoop(void *self) { ((VideoDriver_SDL_Base *)self)->LoopOnce(); }
#endif

  bool edit_box_focused = false;
 
  int startup_display = 0; 
};
 
#endif /* VIDEO_SDL_H */