WindowWrapper.h

//
// Copyright Contributors to the MaterialX Project
// SPDX-License-Identifier: Apache-2.0
//
 
#ifndef MATERIALX_WINDOWWRAPPER_H
#define MATERIALX_WINDOWWRAPPER_H
 
#if defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#undef APIENTRY
#include <windows.h>
#elif defined(__linux__) || defined(__FreeBSD__)
#include <X11/X.h> // for Window
#include <X11/Xlib.h> // for Display
using Widget = struct _WidgetRec*;
#endif
 
#include <memory>
#include <MaterialXCore/Library.h>
 
MATERIALX_NAMESPACE_BEGIN
#if defined(_WIN32)
using ExternalWindowHandle = HWND;
using InternalWindowHandle = HDC;
using DisplayHandle = void*;
#elif defined(__linux__) || defined(__FreeBSD__)
using ExternalWindowHandle = Widget;
using InternalWindowHandle = Window;
using DisplayHandle = Display*;
using Widget = struct _WidgetRec*;
#elif defined(__APPLE__)
using ExternalWindowHandle = void*;
using InternalWindowHandle = void*;
using DisplayHandle = void*;
#else
using Widget = void*;
using ExternalWindowHandle = void*;
using InternalWindowHandle = void*;
using DisplayHandle = void*;
#endif
 
using WindowWrapperPtr = std::shared_ptr<class WindowWrapper>;
 
class WindowWrapper
{
  public:
    static WindowWrapperPtr create(ExternalWindowHandle externalHandle = {},
                                   InternalWindowHandle internalHandle = {},
                                   DisplayHandle display = {});
 
    // Default destructor
    virtual ~WindowWrapper();
 
    ExternalWindowHandle externalHandle() const
    {
        return _externalHandle;
    }
 
    InternalWindowHandle internalHandle() const
    {
        return _internalHandle;
    }
 
    bool isValid() const
    {
        return _internalHandle != 0;
    }
 
    void release();
 
#if defined(__linux__) || defined(__FreeBSD__)
    Display* getXDisplay() const
    {
        return _xDisplay;
    }
#endif
 
  protected:
    WindowWrapper(ExternalWindowHandle externalHandle,
                  InternalWindowHandle internalHandle,
                  DisplayHandle display);
 
  protected:
    ExternalWindowHandle _externalHandle;
    InternalWindowHandle _internalHandle;
 
#if defined(__linux__) || defined(__FreeBSD__)
    Window _framebufferWindow;
    Display* _xDisplay;
#endif
};
 
MATERIALX_NAMESPACE_END
 
#endif