surface.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_IMPELLER_TOOLKIT_EGL_SURFACE_H_
#define FLUTTER_IMPELLER_TOOLKIT_EGL_SURFACE_H_
 
#include "impeller/toolkit/egl/egl.h"
 
namespace impeller {
namespace egl {
 
//------------------------------------------------------------------------------
/// @brief      An instance of an EGL surface. There is no ability to create
///             surfaces directly. Instead, one must be created using a Display
///             connection.
///
class Surface {
 public:
  ~Surface();
 
  //----------------------------------------------------------------------------
  /// @return     True if this is a valid surface.
  ///
  bool IsValid() const;
 
  //----------------------------------------------------------------------------
  /// @return     Get the handle to the underlying surface.
  ///
  const EGLSurface& GetHandle() const;
 
  //----------------------------------------------------------------------------
  /// @brief      Present the surface. For an offscreen pixel buffer surface,
  ///             this is a no-op.
  ///
  /// @return     True if the surface could be presented.
  ///
  bool Present() const;
 
 private:
  friend class Display;
 
  EGLDisplay display_ = EGL_NO_DISPLAY;
  EGLSurface surface_ = EGL_NO_SURFACE;
 
  Surface(EGLDisplay display, EGLSurface surface);
 
  Surface(const Surface&) = delete;
 
  Surface& operator=(const Surface&) = delete;
};
 
}  // namespace egl
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_TOOLKIT_EGL_SURFACE_H_