//========================================================================
// GLFW 3.2 Win32 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would
//    be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
//    be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
//    distribution.
//
//========================================================================

#ifndef _glfw3_win32_platform_h_
#define _glfw3_win32_platform_h_

// We don't need all the fancy stuff
#ifndef NOMINMAX
 #define NOMINMAX
#endif

#ifndef VC_EXTRALEAN
 #define VC_EXTRALEAN
#endif

#ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN
#endif

// This is a workaround for the fact that glfw3.h needs to export APIENTRY (for
// example to allow applications to correctly declare a GL_ARB_debug_output
// callback) but windows.h assumes no one will define APIENTRY before it does
#undef APIENTRY

// GLFW on Windows is Unicode only and does not work in MBCS mode
#ifndef UNICODE
 #define UNICODE
#endif

// GLFW requires Windows XP or later
#if WINVER < 0x0501
 #undef WINVER
 #define WINVER 0x0501
#endif
#if _WIN32_WINNT < 0x0501
 #undef _WIN32_WINNT
 #define _WIN32_WINNT 0x0501
#endif

#include <windows.h>
#include <mmsystem.h>
#include <dbt.h>

#if defined(_MSC_VER)
 #include <malloc.h>
 #define strdup _strdup
#endif

// HACK: Define macros that some older windows.h variants don't
#ifndef WM_MOUSEHWHEEL
 #define WM_MOUSEHWHEEL 0x020E
#endif
#ifndef WM_DWMCOMPOSITIONCHANGED
 #define WM_DWMCOMPOSITIONCHANGED 0x031E
#endif
#ifndef WM_COPYGLOBALDATA
 #define WM_COPYGLOBALDATA 0x0049
#endif
#ifndef WM_UNICHAR
 #define WM_UNICHAR 0x0109
#endif
#ifndef UNICODE_NOCHAR
 #define UNICODE_NOCHAR 0xFFFF
#endif
#ifndef WM_DPICHANGED
 #define WM_DPICHANGED 0x02E0
#endif
#ifndef GET_XBUTTON_WPARAM
 #define GET_XBUTTON_WPARAM(w) (HIWORD(w))
#endif
#ifndef EDS_ROTATEDMODE
 #define EDS_ROTATEDMODE 0x00000004
#endif
#ifndef DISPLAY_DEVICE_ACTIVE
 #define DISPLAY_DEVICE_ACTIVE 0x00000001
#endif

#if WINVER < 0x0601
typedef struct tagCHANGEFILTERSTRUCT
{
    DWORD cbSize;
    DWORD ExtStatus;

} CHANGEFILTERSTRUCT, *PCHANGEFILTERSTRUCT;
#ifndef MSGFLT_ALLOW
 #define MSGFLT_ALLOW 1
#endif
#endif /*Windows 7*/

#ifndef DPI_ENUMS_DECLARED
typedef enum PROCESS_DPI_AWARENESS
{
    PROCESS_DPI_UNAWARE = 0,
    PROCESS_SYSTEM_DPI_AWARE = 1,
    PROCESS_PER_MONITOR_DPI_AWARE = 2
} PROCESS_DPI_AWARENESS;
#endif /*DPI_ENUMS_DECLARED*/

// winmm.dll function pointer typedefs
typedef MMRESULT (WINAPI * JOYGETDEVCAPS_T)(UINT,LPJOYCAPS,UINT);
typedef MMRESULT (WINAPI * JOYGETPOS_T)(UINT,LPJOYINFO);
typedef MMRESULT (WINAPI * JOYGETPOSEX_T)(UINT,LPJOYINFOEX);
typedef DWORD (WINAPI * TIMEGETTIME_T)(void);
#define _glfw_joyGetDevCaps _glfw.win32.winmm.joyGetDevCaps
#define _glfw_joyGetPos _glfw.win32.winmm.joyGetPos
#define _glfw_joyGetPosEx _glfw.win32.winmm.joyGetPosEx
#define _glfw_timeGetTime _glfw.win32.winmm.timeGetTime

// user32.dll function pointer typedefs
typedef BOOL (WINAPI * SETPROCESSDPIAWARE_T)(void);
typedef BOOL (WINAPI * CHANGEWINDOWMESSAGEFILTEREX_T)(HWND,UINT,DWORD,PCHANGEFILTERSTRUCT);
#define _glfw_SetProcessDPIAware _glfw.win32.user32.SetProcessDPIAware
#define _glfw_ChangeWindowMessageFilterEx _glfw.win32.user32.ChangeWindowMessageFilterEx

// dwmapi.dll function pointer typedefs
typedef HRESULT (WINAPI * DWMISCOMPOSITIONENABLED_T)(BOOL*);
typedef HRESULT (WINAPI * DWMFLUSH_T)(VOID);
#define _glfw_DwmIsCompositionEnabled _glfw.win32.dwmapi.DwmIsCompositionEnabled
#define _glfw_DwmFlush _glfw.win32.dwmapi.DwmFlush

// shcore.dll function pointer typedefs
typedef HRESULT (WINAPI * SETPROCESSDPIAWARENESS_T)(PROCESS_DPI_AWARENESS);
#define _glfw_SetProcessDpiAwareness _glfw.win32.shcore.SetProcessDpiAwareness

typedef VkFlags VkWin32SurfaceCreateFlagsKHR;

typedef struct VkWin32SurfaceCreateInfoKHR
{
    VkStructureType                 sType;
    const void*                     pNext;
    VkWin32SurfaceCreateFlagsKHR    flags;
    HINSTANCE                       hinstance;
    HWND                            hwnd;
} VkWin32SurfaceCreateInfoKHR;

typedef VkResult (APIENTRY *PFN_vkCreateWin32SurfaceKHR)(VkInstance,const VkWin32SurfaceCreateInfoKHR*,const VkAllocationCallbacks*,VkSurfaceKHR*);
typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR)(VkPhysicalDevice,uint32_t);

#include "win32_joystick.h"

#if defined(_GLFW_WGL)
 #include "wgl_context.h"
#elif defined(_GLFW_EGL)
 #define _GLFW_EGL_NATIVE_WINDOW  ((EGLNativeWindowType) window->win32.handle)
 #define _GLFW_EGL_NATIVE_DISPLAY EGL_DEFAULT_DISPLAY
 #include "egl_context.h"
#else
 #error "No supported context creation API selected"
#endif

#define _GLFW_WNDCLASSNAME L"GLFW30"

#define _glfw_dlopen(name) LoadLibraryA(name)
#define _glfw_dlclose(handle) FreeLibrary((HMODULE) handle)
#define _glfw_dlsym(handle, name) GetProcAddress((HMODULE) handle, name)

#define _GLFW_PLATFORM_WINDOW_STATE         _GLFWwindowWin32  win32
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryWin32 win32
#define _GLFW_PLATFORM_LIBRARY_TIME_STATE   _GLFWtimeWin32    win32_time
#define _GLFW_PLATFORM_LIBRARY_TLS_STATE    _GLFWtlsWin32     win32_tls
#define _GLFW_PLATFORM_MONITOR_STATE        _GLFWmonitorWin32 win32
#define _GLFW_PLATFORM_CURSOR_STATE         _GLFWcursorWin32  win32


// Win32-specific per-window data
//
typedef struct _GLFWwindowWin32
{
    HWND                handle;
    HICON               bigIcon;
    HICON               smallIcon;

    GLFWbool            cursorTracked;
    GLFWbool            iconified;

    // The last received cursor position, regardless of source
    int                 cursorPosX, cursorPosY;

} _GLFWwindowWin32;


// Win32-specific global data
//
typedef struct _GLFWlibraryWin32
{
    HWND                helperWindow;
    DWORD               foregroundLockTimeout;
    char*               clipboardString;
    char                keyName[64];
    short int           publicKeys[512];
    short int           nativeKeys[GLFW_KEY_LAST + 1];

    // winmm.dll
    struct {
        HINSTANCE       instance;
        JOYGETDEVCAPS_T joyGetDevCaps;
        JOYGETPOS_T     joyGetPos;
        JOYGETPOSEX_T   joyGetPosEx;
        TIMEGETTIME_T   timeGetTime;
    } winmm;

    // user32.dll
    struct {
        HINSTANCE       instance;
        SETPROCESSDPIAWARE_T SetProcessDPIAware;
        CHANGEWINDOWMESSAGEFILTEREX_T ChangeWindowMessageFilterEx;
    } user32;

    // dwmapi.dll
    struct {
        HINSTANCE       instance;
        DWMISCOMPOSITIONENABLED_T DwmIsCompositionEnabled;
        DWMFLUSH_T      DwmFlush;
    } dwmapi;

    // shcore.dll
    struct {
        HINSTANCE       instance;
        SETPROCESSDPIAWARENESS_T SetProcessDpiAwareness;
    } shcore;

} _GLFWlibraryWin32;


// Win32-specific per-monitor data
//
typedef struct _GLFWmonitorWin32
{
    // This size matches the static size of DISPLAY_DEVICE.DeviceName
    WCHAR               adapterName[32];
    WCHAR               displayName[32];
    char                publicAdapterName[64];
    char                publicDisplayName[64];
    GLFWbool            modesPruned;
    GLFWbool            modeChanged;

} _GLFWmonitorWin32;


// Win32-specific per-cursor data
//
typedef struct _GLFWcursorWin32
{
    HCURSOR handle;

} _GLFWcursorWin32;


// Win32-specific global timer data
//
typedef struct _GLFWtimeWin32
{
    GLFWbool            hasPC;
    uint64_t            frequency;

} _GLFWtimeWin32;


// Win32-specific global TLS data
//
typedef struct _GLFWtlsWin32
{
    GLFWbool        allocated;
    DWORD           context;

} _GLFWtlsWin32;


GLFWbool _glfwRegisterWindowClassWin32(void);
void _glfwUnregisterWindowClassWin32(void);

GLFWbool _glfwInitThreadLocalStorageWin32(void);
void _glfwTerminateThreadLocalStorageWin32(void);

WCHAR* _glfwCreateWideStringFromUTF8Win32(const char* source);
char* _glfwCreateUTF8FromWideStringWin32(const WCHAR* source);

void _glfwInitTimerWin32(void);

GLFWbool _glfwSetVideoModeWin32(_GLFWmonitor* monitor, const GLFWvidmode* desired);
void _glfwRestoreVideoModeWin32(_GLFWmonitor* monitor);

#endif // _glfw3_win32_platform_h_