Win32_Platform.h

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/************************************************************************************

Filename    :   Win32_Platform.h
Content     :   Win32 implementation of Platform app infrastructure
Created     :   September 6, 2012
Authors     :   Andrew Reisse

Copyright   :   Copyright 2012 Oculus VR, Inc. All Rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

************************************************************************************/

#ifndef OVR_Win32_Platform_h
#define OVR_Win32_Platform_h

#include "Platform.h"
#include <windows.h>


namespace OVR { namespace Render {
    class RenderDevice;
    struct DisplayId;
}}

namespace OVR { namespace Platform { namespace Win32 {

class PlatformCore : public Platform::PlatformCore
{
    HWND        hWnd;
    HINSTANCE   hInstance;
    bool        Quit;
    int         ExitCode;
    int         Width, Height;

    MouseMode   MMode;    
    POINT       WindowCenter; // In desktop coordinates
    HCURSOR     Cursor;
    int         Modifiers;
    String      WindowTitle;

    // Win32 static function that delegates to WindowProc member function.
    static LRESULT CALLBACK systemWindowProc(HWND window, UINT msg, WPARAM wp, LPARAM lp);

    LRESULT     WindowProc(UINT msg, WPARAM wp, LPARAM lp);

public:
    PlatformCore(Application* app, HINSTANCE hinst);
    ~PlatformCore();

    bool      SetupWindow(int w, int h);
    void      DestroyWindow();
    void      ShowWindow(bool visible);
    void      Exit(int exitcode) { Quit = 1; ExitCode = exitcode; }

    RenderDevice* SetupGraphics(const SetupGraphicsDeviceSet& setupGraphicsDesc,
                                const char* type,
                                const Render::RendererParams& rp);

    void      SetMouseMode(MouseMode mm);
    void      GetWindowSize(int* w, int* h) const;

    void      SetWindowTitle(const char*title);
        void      PlayMusicFile(const char *fileName);
    int       GetDisplayCount();
    Render::DisplayId    GetDisplay(int screen);

    int       Run();
};


// Win32 key conversion helper.
KeyCode MapVKToKeyCode(unsigned vk);

}}}


// OVR_PLATFORM_APP_ARGS specifies the Application class to use for startup,
// providing it with startup arguments.
#define OVR_PLATFORM_APP_ARGS(AppClass, args)                                            \
    OVR::Platform::Application* OVR::Platform::Application::CreateApplication()          \
    { OVR::System::Init(OVR::Log::ConfigureDefaultLog(OVR::LogMask_All));                \
      return new AppClass args; }                                                        \
    void OVR::Platform::Application::DestroyApplication(OVR::Platform::Application* app) \
    { OVR::Platform::PlatformCore* platform = app->pPlatform;                            \
      delete app; delete platform; OVR::System::Destroy(); };

// OVR_PLATFORM_APP_ARGS specifies the Application startup class with no args.
#define OVR_PLATFORM_APP(AppClass) OVR_PLATFORM_APP_ARGS(AppClass, ())

#endif // OVR_Win32_Platform_h