/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim: set ts=8 sts=4 et sw=4 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GLCONTEXTGLX_H_

#define GLCONTEXTGLX_H_

#include "GLContext.h"

#include "GLXLibrary.h"

#include "mozilla/X11Util.h"

namespace mozilla {

namespace gl {

class GLContextGLX : public GLContext {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextGLX, override)

  static already_AddRefed<GLContextGLX> CreateGLContext(

      CreateContextFlags flags, const SurfaceCaps& caps, bool isOffscreen,

      Display* display, GLXDrawable drawable, GLXFBConfig cfg,

      bool deleteDrawable, gfxXlibSurface* pixmap);

  // Finds a GLXFBConfig compatible with the provided window.

  static bool FindFBConfigForWindow(

      Display* display, int screen, Window window,

      ScopedXFree<GLXFBConfig>* const out_scopedConfigArr,

      GLXFBConfig* const out_config, int* const out_visid, bool aWebRender);

  ~GLContextGLX();

  virtual GLContextType GetContextType() const override {

    return GLContextType::GLX;

  }

  static GLContextGLX* Cast(GLContext* gl) {

    MOZ_ASSERT(gl->GetContextType() == GLContextType::GLX);

    return static_cast<GLContextGLX*>(gl);

  }

  bool Init() override;

  virtual bool MakeCurrentImpl() const override;

  virtual bool IsCurrentImpl() const override;

  virtual bool SetupLookupFunction() override;

  virtual bool IsDoubleBuffered() const override;

  virtual bool SwapBuffers() override;

  virtual void GetWSIInfo(nsCString* const out) const override;

  // Overrides the current GLXDrawable backing the context and makes the

  // context current.

  bool OverrideDrawable(GLXDrawable drawable);

  // Undoes the effect of a drawable override.

  bool RestoreDrawable();

 private:

  friend class GLContextProviderGLX;

  GLContextGLX(CreateContextFlags flags, const SurfaceCaps& caps,

               bool isOffscreen, Display* aDisplay, GLXDrawable aDrawable,

               GLXContext aContext, bool aDeleteDrawable, bool aDoubleBuffered,

               gfxXlibSurface* aPixmap);

  GLXContext mContext;

  Display* mDisplay;

  GLXDrawable mDrawable;

  bool mDeleteDrawable;

  bool mDoubleBuffered;

  GLXLibrary* mGLX;

  RefPtr<gfxXlibSurface> mPixmap;

  bool mOwnsContext;

};

}  // namespace gl

}  // namespace mozilla

#endif  // GLCONTEXTGLX_H_