visual.h

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#ifndef ION_PORTGFX_VISUAL_H_
#define ION_PORTGFX_VISUAL_H_

#include <memory>

#include "base/integral_types.h"
#include "base/macros.h"

namespace ion {
namespace portgfx {

class ION_API Visual {
 public:
  virtual ~Visual();

  bool IsCurrent() const { return this == GetCurrent(); }

  virtual bool IsValid() const;

  size_t GetId() const { return id_; }

  int GetGlVersion() const;

  static void RefreshCurrentVisual();

  static const Visual* GetCurrent();

  static std::unique_ptr<Visual> CreateVisual();

  static std::unique_ptr<Visual> CreateVisualInCurrentShareGroup();

  static bool MakeCurrent(const Visual* new_current);

  static void DestroyWrappingVisual(const Visual* visual);

  static size_t GetCurrentId();

 protected:
  Visual();

  virtual Visual* CreateVisualInShareGroup() const;

  virtual bool MakeCurrent() const;

  virtual void TeardownContextNew();

  virtual void TeardownContextShared();

  virtual void UpdateId();

  void SetId(size_t id) { id_ = id; }

  static void TeardownVisual(Visual* visual);

  static void RegisterVisual(Visual *visual);

 private:
  enum Type {
    kMock,
    kNew,
    kShare,
    kCurrent
  };

  explicit Visual(Type type);

  struct VisualInfo;
  std::unique_ptr<VisualInfo> visual_;

  Type type_;

  size_t id_;

  friend class MockVisual;

  DISALLOW_COPY_AND_ASSIGN(Visual);
};

}  // namespace portgfx
}  // namespace ion

#endif  // ION_PORTGFX_VISUAL_H_