/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// vid_wgl.c -- Windows 9x/NT OpenGL driver

#include "quakedef.h"
#include "cdaudio.h"
#include "keys.h"
#include "resource.h"
#include "sound.h"
#include "winquake.h"

#define MAX_MODE_LIST	50
#define VID_ROW_SIZE	3
#define MAXWIDTH		10000
#define MAXHEIGHT		10000
#define BASEWIDTH		320
#define BASEHEIGHT		200

#define MODE_WINDOWED			0
#define NO_MODE					(MODE_WINDOWED - 1)
#define MODE_FULLSCREEN_DEFAULT	(MODE_WINDOWED + 1)

typedef struct {
	modestate_t	type;
	int			width;
	int			height;
	int			modenum;
	int			fullscreen;
	int			bpp;
	int			freq;
	qbool		halfscreen;
	char		modedesc[17];
} vmode_t;

typedef struct {
	int			width;
	int			height;
} lmode_t;

lmode_t	lowresmodes[] = {
	{320, 200},
	{320, 240},
	{400, 300},
	{512, 384},
};

qbool			DDActive;	// sys_win.c wants this

static vmode_t	modelist[MAX_MODE_LIST];
static int		nummodes;
static vmode_t	badmode;

static DEVMODE	gdevmode;
static qbool	vid_initialized = false;
static qbool	windowed, leavecurrentmode;
static qbool	vid_canalttab = false;
static qbool	vid_wassuspended = false;
static int		windowed_mouse;
extern qbool	in_mouseactive;  // from in_win.c
static HICON	hIcon;

int			DIBWidth, DIBHeight;
RECT		WindowRect;
DWORD		WindowStyle, ExWindowStyle;

HWND	mainwindow, dibwindow;

int			vid_modenum = NO_MODE;
int			vid_default = MODE_WINDOWED;
static int	windowed_default;
static qbool fullsbardraw = false;

HGLRC	baseRC;
HDC		maindc;


cvar_t	vid_hwgammacontrol = {"vid_hwgammacontrol","1"};
cvar_t	vid_vsync = {"vid_vsync", "1"};
cvar_t	gl_ext_swapinterval = {"gl_ext_swapinterval", "1"};

qbool	vid_gammaworks = false;
qbool	vid_hwgamma_enabled = false;
unsigned short *currentgammaramp = NULL;
void RestoreHWGamma (void);


modestate_t	modestate = MS_UNINIT;

void VID_MenuDraw (void);
void VID_MenuKey (int key);

LONG WINAPI MainWndProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
void AppActivate(BOOL fActive, BOOL minimize);
char *VID_GetModeDescription (int mode);
void ClearAllStates (void);
void VID_UpdateWindowStatus (void);
void GL_Init (void);

qbool gl_mtexable = false;
qbool gl_mtexfbskins = false;

//====================================

cvar_t		vid_ref = {"vid_ref", "gl", CVAR_ROM};
cvar_t		gl_mode = {"gl_mode","0"};
// Note that 0 is MODE_WINDOWED
cvar_t		_vid_default_mode = {"_vid_default_mode","0",CVAR_ARCHIVE};
// Note that 3 is MODE_FULLSCREEN_DEFAULT
cvar_t		_vid_default_mode_win = {"_vid_default_mode_win","3",CVAR_ARCHIVE};
cvar_t		vid_config_x = {"vid_config_x","800",CVAR_ARCHIVE};
cvar_t		vid_config_y = {"vid_config_y","600",CVAR_ARCHIVE};
cvar_t		vid_stretch_by_2 = {"vid_stretch_by_2","1",CVAR_ARCHIVE};
cvar_t		_windowed_mouse = {"_windowed_mouse","1",CVAR_ARCHIVE};
cvar_t		vid_displayfrequency = {"vid_displayfrequency", "0"};

int			window_center_x, window_center_y, window_x, window_y, window_width, window_height;
RECT		window_rect;

// direct draw software compatability stuff

void VID_HandlePause (qbool pause)
{
}

void VID_LockBuffer (void)
{
}

void VID_UnlockBuffer (void)
{
}

void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
}

void D_EndDirectRect (int x, int y, int width, int height)
{
}


/*
================
VID_SetCaption
================
*/
void VID_SetCaption (char *text)
{
	if (vid_initialized)
		SetWindowText (mainwindow, text);
}


void CenterWindow(HWND hWndCenter, int width, int height, BOOL lefttopjustify)
{
	int     CenterX, CenterY;

	CenterX = (GetSystemMetrics(SM_CXSCREEN) - width) / 2;
	CenterY = (GetSystemMetrics(SM_CYSCREEN) - height) / 2;
	if (CenterX > CenterY*2)
		CenterX >>= 1;	// dual screens
	CenterX = (CenterX < 0) ? 0: CenterX;
	CenterY = (CenterY < 0) ? 0: CenterY;
	SetWindowPos (hWndCenter, NULL, CenterX, CenterY, 0, 0,
			SWP_NOSIZE | SWP_NOZORDER | SWP_SHOWWINDOW | SWP_DRAWFRAME);
}

qbool VID_SetWindowedMode (int modenum)
{
	HDC				hdc;
	int				width, height;
	RECT			rect;

	WindowRect.top = WindowRect.left = 0;

	WindowRect.right = modelist[modenum].width;
	WindowRect.bottom = modelist[modenum].height;

	DIBWidth = modelist[modenum].width;
	DIBHeight = modelist[modenum].height;

	vid.realwidth = modelist[modenum].width;
	vid.realheight = modelist[modenum].height;

	WindowStyle = WS_OVERLAPPED | WS_BORDER | WS_CAPTION | WS_SYSMENU |
				  WS_MINIMIZEBOX;
	ExWindowStyle = 0;

	rect = WindowRect;
	AdjustWindowRectEx(&rect, WindowStyle, FALSE, 0);

	width = rect.right - rect.left;
	height = rect.bottom - rect.top;

	// Create the DIB window
if (!dibwindow)
	dibwindow = CreateWindowEx (
		 ExWindowStyle,
		 "WinQuake",
		 PROGRAM,
		 WindowStyle,
		 rect.left, rect.top,
		 width,
		 height,
		 NULL,
		 NULL,
		 global_hInstance,
		 NULL);
else {
	SetWindowLong (dibwindow, GWL_STYLE, WindowStyle);
	MoveWindow (dibwindow, 0, 0, width, height, FALSE);
}

	if (!dibwindow)
		Sys_Error ("Couldn't create DIB window");

	// Center and show the DIB window
	CenterWindow(dibwindow, WindowRect.right - WindowRect.left,
				 WindowRect.bottom - WindowRect.top, false);

	ShowWindow (dibwindow, SW_SHOWDEFAULT);
	UpdateWindow (dibwindow);

	modestate = MS_WINDOWED;

// because we have set the background brush for the window to NULL
// (to avoid flickering when re-sizing the window on the desktop),
// we clear the window to black when created, otherwise it will be
// empty while Quake starts up.
	hdc = GetDC(dibwindow);
	PatBlt(hdc,0,0,WindowRect.right,WindowRect.bottom,BLACKNESS);
	ReleaseDC(dibwindow, hdc);

	if (vid.height > modelist[modenum].height)
		vid.height = modelist[modenum].height;
	if (vid.width > modelist[modenum].width)
		vid.width = modelist[modenum].width;

	vid.aspect = ((float)vid.height / (float)vid.width) *
				((float)vid.realwidth / (float)vid.realheight);

	vid.numpages = 2;

	mainwindow = dibwindow;

	SendMessage (mainwindow, WM_SETICON, (WPARAM)TRUE, (LPARAM)hIcon);
	SendMessage (mainwindow, WM_SETICON, (WPARAM)FALSE, (LPARAM)hIcon);

	return true;
}


qbool VID_SetFullDIBMode (int modenum)
{
	HDC			hdc;
	int			width, height;
	RECT		rect;

	if (!leavecurrentmode)
	{
		gdevmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY;
		gdevmode.dmBitsPerPel = modelist[modenum].bpp;
		gdevmode.dmPelsWidth = modelist[modenum].width <<
							   modelist[modenum].halfscreen;
		gdevmode.dmPelsHeight = modelist[modenum].height;
		gdevmode.dmDisplayFrequency = modelist[modenum].freq;
		gdevmode.dmSize = sizeof (gdevmode);

		if (vid_displayfrequency.value > 0)
		{
			gdevmode.dmDisplayFrequency = vid_displayfrequency.value;
			Com_DPrintf ("Forcing display frequency to %i Hz\n", gdevmode.dmDisplayFrequency);
		}

		if (ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
			Sys_Error ("Couldn't set fullscreen DIB mode");
	}

	modestate = MS_FULLDIB;

	WindowRect.top = WindowRect.left = 0;

	WindowRect.right = modelist[modenum].width;
	WindowRect.bottom = modelist[modenum].height;

	DIBWidth = modelist[modenum].width;
	DIBHeight = modelist[modenum].height;

	vid.realwidth = modelist[modenum].width;
	vid.realheight = modelist[modenum].height;

	WindowStyle = WS_POPUP;
	ExWindowStyle = 0;

	rect = WindowRect;
	AdjustWindowRectEx(&rect, WindowStyle, FALSE, 0);

	width = rect.right - rect.left;
	height = rect.bottom - rect.top;

	// Create the DIB window
if (!dibwindow)
	dibwindow = CreateWindowEx (
		 ExWindowStyle,
		 "WinQuake",
		 PROGRAM,
		 WindowStyle,
		 rect.left, rect.top,
		 width,
		 height,
		 NULL,
		 NULL,
		 global_hInstance,
		 NULL);
else {
	SetWindowLong (dibwindow, GWL_STYLE, WindowStyle);
	MoveWindow (dibwindow, 0, 0, width, height, FALSE);
}

	if (!dibwindow)
		Sys_Error ("Couldn't create DIB window");

	ShowWindow (dibwindow, SW_SHOWDEFAULT);
	UpdateWindow (dibwindow);

	// Because we have set the background brush for the window to NULL
	// (to avoid flickering when re-sizing the window on the desktop), we
	// clear the window to black when created, otherwise it will be
	// empty while Quake starts up.
	hdc = GetDC(dibwindow);
	PatBlt(hdc,0,0,WindowRect.right,WindowRect.bottom,BLACKNESS);
	ReleaseDC(dibwindow, hdc);

	if (vid.height > modelist[modenum].height)
		vid.height = modelist[modenum].height;
	if (vid.width > modelist[modenum].width)
		vid.width = modelist[modenum].width;

	vid.aspect = ((float)vid.height / (float)vid.width) *
				(320.0 / 240.0);

	vid.numpages = 2;

// needed because we're not getting WM_MOVE messages fullscreen on NT
	window_x = 0;
	window_y = 0;

	mainwindow = dibwindow;

	SendMessage (mainwindow, WM_SETICON, (WPARAM)TRUE, (LPARAM)hIcon);
	SendMessage (mainwindow, WM_SETICON, (WPARAM)FALSE, (LPARAM)hIcon);

	return true;
}


int VID_SetMode (int modenum, unsigned char *palette)
{
	int			original_mode, temp;
	qbool		stat;
//    MSG			msg;

/*	if ((windowed && (modenum != 0)) ||
		(!windowed && (modenum < 1)) ||
		(!windowed && (modenum >= nummodes)))
	{
		Sys_Error ("Bad video mode");
	} */

// so Com_Printfs don't mess us up by forcing vid and snd updates
	temp = scr_disabled_for_loading;
	scr_disabled_for_loading = true;

	CDAudio_Pause ();

	if (vid_modenum == NO_MODE)
		original_mode = windowed_default;
	else
		original_mode = vid_modenum;

	// Set either the fullscreen or windowed mode
	if (modelist[modenum].type == MS_WINDOWED)
	{
		if (_windowed_mouse.value && key_dest == key_game)
		{
			stat = VID_SetWindowedMode(modenum);
			IN_ActivateMouse ();
			IN_HideMouse ();
		}
		else
		{
			IN_DeactivateMouse ();
			IN_ShowMouse ();
			stat = VID_SetWindowedMode(modenum);
		}
	}
	else if (modelist[modenum].type == MS_FULLDIB)
	{
		stat = VID_SetFullDIBMode(modenum);
		IN_ActivateMouse ();
		IN_HideMouse ();
	}
	else
	{
		Sys_Error ("VID_SetMode: Bad mode type in modelist");
	}

	window_width = DIBWidth;
	window_height = DIBHeight;
	VID_UpdateWindowStatus ();

	CDAudio_Resume ();
	scr_disabled_for_loading = temp;

	if (!stat)
	{
		Sys_Error ("Couldn't set video mode");
	}

// now we try to make sure we get the focus on the mode switch, because
// sometimes in some systems we don't.  We grab the foreground, then
// finish setting up, pump all our messages, and sleep for a little while
// to let messages finish bouncing around the system, then we put
// ourselves at the top of the z order, then grab the foreground again,
// Who knows if it helps, but it probably doesn't hurt
	SetForegroundWindow (mainwindow);
	vid_modenum = modenum;
	Cvar_SetValue (&gl_mode, (float)vid_modenum);

/*	// Tonik: all it does, it seems, is eat up keys and slow down
	// the startup process by 0.1 seconds, so disable it
	while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
	{
      	TranslateMessage (&msg);
      	DispatchMessage (&msg);
	}
	Sleep (100);
*/
	SetWindowPos (mainwindow, HWND_TOP, 0, 0, 0, 0,
				  SWP_DRAWFRAME | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW |
				  SWP_NOCOPYBITS);

	SetForegroundWindow (mainwindow);

// fix the leftover Alt from any Alt-Tab or the like that switched us away
	ClearAllStates ();

//	if (!msg_suppress_1)
	Com_Printf ("Video mode %s initialized.\n", VID_GetModeDescription (vid_modenum));

	SCR_InvalidateScreen ();

	return true;
}


/*
================
VID_UpdateWindowStatus
================
*/
void VID_UpdateWindowStatus (void)
{

	window_rect.left = window_x;
	window_rect.top = window_y;
	window_rect.right = window_x + window_width;
	window_rect.bottom = window_y + window_height;
	window_center_x = (window_rect.left + window_rect.right) / 2;
	window_center_y = (window_rect.top + window_rect.bottom) / 2;

	IN_UpdateClipCursor ();
}


//====================================

BINDTEXFUNCPTR bindTexFunc;

#define TEXTURE_EXT_STRING "GL_EXT_texture_object"


void CheckTextureExtensions (void)
{
#ifndef USEFAKEGL
	unsigned char	*tmp;
	qbool			 texture_ext;
	HINSTANCE		 hInstGL;

	texture_ext = FALSE;
	/* check for texture extension */
	tmp = (unsigned char *)glGetString(GL_EXTENSIONS);
	while (tmp && *tmp)
	{
		if (strncmp((const char*)tmp, TEXTURE_EXT_STRING, strlen(TEXTURE_EXT_STRING)) == 0)
			texture_ext = TRUE;
		tmp++;
	}

	if (!texture_ext || COM_CheckParm ("-gl11") )
	{
		hInstGL = LoadLibrary("opengl32.dll");

		if (hInstGL == NULL)
			Sys_Error ("Couldn't load opengl32.dll");

		bindTexFunc = (void *)GetProcAddress(hInstGL,"glBindTexture");

		if (!bindTexFunc)
			Sys_Error ("No texture objects!");
		return;
	}

/* load library and get procedure adresses for texture extension API */
	if ((bindTexFunc = (BINDTEXFUNCPTR)
		wglGetProcAddress((LPCSTR) "glBindTextureEXT")) == NULL)
	{
		Sys_Error ("GetProcAddress for BindTextureEXT failed");
		return;
	}
#endif
}

void CheckMultiTextureExtensions (void)
{
	if (strstr(gl_extensions, "GL_ARB_multitexture ") && !COM_CheckParm("-nomtex")) {
		qglMultiTexCoord2f = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
		qglActiveTexture = (void *) wglGetProcAddress("glActiveTextureARB");
		if (!qglMultiTexCoord2f || !qglActiveTexture)
			return;
		Com_Printf ("Multitexture extensions found.\n");
		gl_mtexable = true;
	}

	if (gl_mtexable && !COM_CheckParm("-nomtexfbskins"))
		gl_mtexfbskins = true;
}

BOOL ( WINAPI * qwglSwapIntervalEXT)( int interval ) = NULL;

void CheckSwapIntervalExtension (void)
{
	if (gl_ext_swapinterval.value && strstr(gl_extensions, "WGL_EXT_swap_control")) {
		qwglSwapIntervalEXT = (void *) wglGetProcAddress("wglSwapIntervalEXT");
	}
}

void UpdateSwapInterval (void)
{
	static float old_vid_vsync = 0;

	if (qwglSwapIntervalEXT) {
		if (vid_vsync.value != old_vid_vsync) {
			old_vid_vsync = vid_vsync.value;
			qwglSwapIntervalEXT (vid_vsync.value != 0);
		}
	}
}


void GL_CheckExtensions (void)
{
	CheckTextureExtensions ();
	CheckMultiTextureExtensions ();
	CheckSwapIntervalExtension ();
}


void GL_EndRendering (void)
{
	static qbool old_hwgamma_enabled;
#if 0
	vid_hwgamma_enabled = vid_hwgammacontrol.value && vid_gammaworks
		&& ActiveApp && !Minimized && modestate == MS_FULLDIB;
	if (vid_hwgamma_enabled != old_hwgamma_enabled) {
		old_hwgamma_enabled = vid_hwgamma_enabled;
		if (vid_hwgamma_enabled && currentgammaramp)
			VID_SetDeviceGammaRamp (currentgammaramp);
		else
			RestoreHWGamma ();
	}
#endif
	UpdateSwapInterval ();

	if (!scr_skipupdate || block_drawing)
#ifdef USEFAKEGL
		FakeSwapBuffers ();
#else
		SwapBuffers (maindc);
#endif

// handle the mouse state when windowed if that's changed
	if (modestate == MS_WINDOWED)
	{
		if (!_windowed_mouse.value) {
			if (windowed_mouse)	{
				IN_DeactivateMouse ();
				IN_ShowMouse ();
				windowed_mouse = false;
			}
		} else {
			windowed_mouse = true;
			if (key_dest == key_game && !in_mouseactive && ActiveApp) {
				IN_ActivateMouse ();
				IN_HideMouse ();
			} else if (in_mouseactive && key_dest != key_game) {
				IN_DeactivateMouse ();
				IN_ShowMouse ();
			}
		}
	}
	if (fullsbardraw)
		SCR_InvalidateScreen ();
}


static byte	systemgammaramp[3][256][2];
static qbool customgamma = false;

/*
======================
VID_SetDeviceGammaRamp

Note: ramps must point to a static array
======================
*/
void VID_SetDeviceGammaRamp (unsigned short *ramps)
{
	if (vid_gammaworks) {
		currentgammaramp = ramps;
		if (vid_hwgamma_enabled) {
			SetDeviceGammaRamp (maindc, ramps);
			customgamma = true;
		}
	}
}

void InitHWGamma (void)
{
	if (COM_CheckParm("-nohwgamma"))
		return;
	vid_gammaworks = GetDeviceGammaRamp (maindc, systemgammaramp);
	vid_hwgamma_enabled = vid_hwgammacontrol.value && vid_gammaworks
		&& ActiveApp && !Minimized && modestate == MS_FULLDIB;
}

void RestoreHWGamma (void)
{
	if (vid_gammaworks && customgamma) {
		customgamma = false;
		SetDeviceGammaRamp (maindc, systemgammaramp);
	}
}


//=================================================================


void VID_Shutdown (void)
{
   	HGLRC hRC;
   	HDC	  hDC;

	if (vid_initialized)
	{
		RestoreHWGamma ();

		vid_canalttab = false;
		hRC = wglGetCurrentContext();
    	hDC = wglGetCurrentDC();

    	wglMakeCurrent(NULL, NULL);

		if (hRC)
			wglDeleteContext(hRC);

		if (hDC && dibwindow)
			ReleaseDC(dibwindow, hDC);

		if (modestate == MS_FULLDIB)
			ChangeDisplaySettings (NULL, 0);

		if (maindc && dibwindow)
			ReleaseDC (dibwindow, maindc);

		AppActivate(false, false);
	}
}


//==========================================================================


BOOL bSetupPixelFormat(HDC hDC)
{
    static PIXELFORMATDESCRIPTOR pfd = {
	sizeof(PIXELFORMATDESCRIPTOR),	// size of this pfd
	1,				// version number
	PFD_DRAW_TO_WINDOW 		// support window
	|  PFD_SUPPORT_OPENGL 	// support OpenGL
	|  PFD_DOUBLEBUFFER ,	// double buffered
	PFD_TYPE_RGBA,			// RGBA type
	24,				// 24-bit color depth
	0, 0, 0, 0, 0, 0,		// color bits ignored
	0,				// no alpha buffer
	0,				// shift bit ignored
	0,				// no accumulation buffer
	0, 0, 0, 0, 			// accum bits ignored
	32,				// 32-bit z-buffer
	0,				// no stencil buffer
	0,				// no auxiliary buffer
	PFD_MAIN_PLANE,			// main layer
	0,				// reserved
	0, 0, 0				// layer masks ignored
    };
    int pixelformat;

    if ( (pixelformat = ChoosePixelFormat(hDC, &pfd)) == 0 )
    {
        MessageBox(NULL, "ChoosePixelFormat failed", "Error", MB_OK);
        return FALSE;
    }

    if (SetPixelFormat(hDC, pixelformat, &pfd) == FALSE)
    {
        MessageBox(NULL, "SetPixelFormat failed", "Error", MB_OK);
        return FALSE;
    }

    return TRUE;
}


/*
===================================================================

MAIN WINDOW

===================================================================
*/

/*
================
ClearAllStates
================
*/
void ClearAllStates (void)
{
	extern void IN_ClearStates (void);
	extern qbool keydown[256];
	int		i;

// send an up event for each key, to make sure the server clears them all
	for (i=0 ; i<256 ; i++)
	{
		if (keydown[i])
			Key_Event (i, false);
	}

	Key_ClearStates ();
	IN_ClearStates ();
}

void AppActivate(BOOL fActive, BOOL minimize)
/****************************************************************************
*
* Function:     AppActivate
* Parameters:   fActive - True if app is activating
*
* Description:  If the application is activating, then swap the system
*               into SYSPAL_NOSTATIC mode so that our palettes will display
*               correctly.
*
****************************************************************************/
{
	static BOOL	sound_active;

	ActiveApp = fActive;
	Minimized = minimize;

// enable/disable sound on focus gain/loss
	if (!ActiveApp && sound_active)
	{
		S_BlockSound ();
		sound_active = false;
	}
	else if (ActiveApp && !sound_active)
	{
		S_UnblockSound ();
		sound_active = true;
	}

	if (fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			IN_ActivateMouse ();
			IN_HideMouse ();

			if (vid_canalttab && !Minimized && currentgammaramp)
				VID_SetDeviceGammaRamp (currentgammaramp);

			if (vid_canalttab && vid_wassuspended) {
				vid_wassuspended = false;
				if (ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
					Sys_Error ("Couldn't set fullscreen DIB mode");
				ShowWindow (mainwindow, SW_SHOWNORMAL);

				// Fix for alt-tab bug in NVidia drivers
				MoveWindow (mainwindow, 0, 0, gdevmode.dmPelsWidth, gdevmode.dmPelsHeight, false);

				SCR_InvalidateScreen ();
			}
		}
		else if (modestate == MS_WINDOWED && Minimized)
			ShowWindow (mainwindow, SW_RESTORE);
		else if ((modestate == MS_WINDOWED) && _windowed_mouse.value && key_dest == key_game)
		{
			IN_ActivateMouse ();
			IN_HideMouse ();
		}
	}

	if (!fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			IN_DeactivateMouse ();
			IN_ShowMouse ();
			RestoreHWGamma ();
			if (vid_canalttab) {
				ChangeDisplaySettings (NULL, 0);
				vid_wassuspended = true;
			}
		}
		else if ((modestate == MS_WINDOWED) && _windowed_mouse.value)
		{
			IN_DeactivateMouse ();
			IN_ShowMouse ();
		}
	}
}


/*
===================================================================

MAIN WINDOW

===================================================================
*/

LONG CDAudio_MessageHandler(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

int IN_TranslateKeyEvent (int lParam, int wParam, qbool down);

/* main window procedure */
LONG WINAPI MainWndProc (
    HWND    hWnd,
    UINT    uMsg,
    WPARAM  wParam,
    LPARAM  lParam)
{
    LONG    lRet = 1;
	int		fActive, fMinimized, temp;
	extern unsigned int uiWheelMessage;

	if ( uMsg == uiWheelMessage ) {
		uMsg = WM_MOUSEWHEEL;
		wParam <<= 16;
	}

    switch (uMsg)
    {
		case WM_KILLFOCUS:
			if (modestate == MS_FULLDIB)
				ShowWindow(mainwindow, SW_SHOWMINNOACTIVE);
			break;

		case WM_CREATE:
			break;

		case WM_MOVE:
			window_x = (int) LOWORD(lParam);
			window_y = (int) HIWORD(lParam);
			VID_UpdateWindowStatus ();
			break;

		case WM_KEYDOWN:
		case WM_SYSKEYDOWN:
			IN_TranslateKeyEvent (lParam, wParam, true);
			break;

		case WM_KEYUP:
		case WM_SYSKEYUP:
			IN_TranslateKeyEvent (lParam, wParam, false);
			break;

		case WM_SYSCHAR:
		// keep Alt-Space from happening
			break;

	// this is complicated because Win32 seems to pack multiple mouse events into
	// one update sometimes, so we always check all states and look for events
		case WM_LBUTTONDOWN:
		case WM_LBUTTONUP:
		case WM_RBUTTONDOWN:
		case WM_RBUTTONUP:
		case WM_MBUTTONDOWN:
		case WM_MBUTTONUP:
		case WM_XBUTTONDOWN:
		case WM_XBUTTONUP:
		case WM_MOUSEMOVE:
			temp = 0;

			if (wParam & MK_LBUTTON)
				temp |= 1;

			if (wParam & MK_RBUTTON)
				temp |= 2;

			if (wParam & MK_MBUTTON)
				temp |= 4;

			// Win2k/XP let us bind button4 and button5
			if (wParam & MK_XBUTTON1)
				temp |= 8;

			if (wParam & MK_XBUTTON2)
				temp |= 16;

			IN_MouseEvent (temp);

			break;

		// JACK: This is the mouse wheel with the Intellimouse
		// Its delta is either positive or neg, and we generate the proper
		// Event.
		case WM_MOUSEWHEEL:
			if (in_mwheeltype != MWHEEL_DINPUT)
			{
				in_mwheeltype = MWHEEL_WINDOWMSG;

				if ((short) HIWORD(wParam) > 0) {
					Key_Event(K_MWHEELUP, true);
					Key_Event(K_MWHEELUP, false);
				} else {
					Key_Event(K_MWHEELDOWN, true);
					Key_Event(K_MWHEELDOWN, false);
				}
			}
			break;

    	case WM_SIZE:
            break;

   	    case WM_CLOSE:
			if (MessageBox (mainwindow, "Are you sure you want to quit?", "Confirm Exit",
						MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION) == IDYES)
			{
				Host_Quit ();
			}

	        break;

		case WM_ACTIVATE:
			fActive = LOWORD(wParam);
			fMinimized = (BOOL) HIWORD(wParam);
			AppActivate(!(fActive == WA_INACTIVE), fMinimized);

		// fix the leftover Alt from any Alt-Tab or the like that switched us away
			ClearAllStates ();

			break;

   	    case WM_DESTROY:
        {
			if (dibwindow)
				DestroyWindow (dibwindow);

            PostQuitMessage (0);
        }
        break;

		case MM_MCINOTIFY:
            lRet = CDAudio_MessageHandler (hWnd, uMsg, wParam, lParam);
			break;

    	default:
            /* pass all unhandled messages to DefWindowProc */
            lRet = DefWindowProc (hWnd, uMsg, wParam, lParam);
        break;
    }

    /* return 1 if handled message, 0 if not */
    return lRet;
}


/*
=================
VID_NumModes
=================
*/
int VID_NumModes (void)
{
	return nummodes;
}


/*
=================
VID_GetModePtr
=================
*/
vmode_t *VID_GetModePtr (int modenum)
{
	if ((modenum >= 0) && (modenum < nummodes))
		return &modelist[modenum];

	return &badmode;
}


/*
=================
VID_GetModeDescription
=================
*/
char *VID_GetModeDescription (int mode)
{
	char		*pinfo;
	vmode_t		*pv;
	static char	temp[100];

	if ((mode < 0) || (mode >= nummodes))
		return NULL;

	if (!leavecurrentmode)
	{
		pv = VID_GetModePtr (mode);
		pinfo = pv->modedesc;
	}
	else
	{
		sprintf (temp, "Desktop resolution (%dx%d)",
				 modelist[MODE_FULLSCREEN_DEFAULT].width,
				 modelist[MODE_FULLSCREEN_DEFAULT].height);
		pinfo = temp;
	}

	return pinfo;
}


// KJB: Added this to return the mode driver name in description for console

char *VID_GetExtModeDescription (int mode)
{
	static char	pinfo[40];
	vmode_t		*pv;

	if ((mode < 0) || (mode >= nummodes))
		return NULL;

	pv = VID_GetModePtr (mode);
	if (modelist[mode].type == MS_FULLDIB)
	{
		if (!leavecurrentmode)
		{
			sprintf(pinfo,"%s fullscreen", pv->modedesc);
		}
		else
		{
			sprintf (pinfo, "Desktop resolution (%dx%d)",
					 modelist[MODE_FULLSCREEN_DEFAULT].width,
					 modelist[MODE_FULLSCREEN_DEFAULT].height);
		}
	}
	else
	{
		if (modestate == MS_WINDOWED)
			sprintf(pinfo, "%s windowed", pv->modedesc);
		else
			sprintf(pinfo, "windowed");
	}

	return pinfo;
}


/*
=================
VID_ModeList_f
=================
*/
void VID_ModeList_f (void)
{
	int			i, lnummodes, t;
	char		*pinfo;
	vmode_t		*pv;

	lnummodes = VID_NumModes ();

	t = leavecurrentmode;
	leavecurrentmode = 0;

	for (i=1 ; i<lnummodes ; i++)
	{
		pv = VID_GetModePtr (i);
		pinfo = VID_GetExtModeDescription (i);
		Com_Printf ("%2d: %s\n", i, pinfo);
	}

	leavecurrentmode = t;
}


void VID_InitDIB (HINSTANCE hInstance)
{
	WNDCLASS		wc;
//	HDC				hdc;

	/* Register the frame class */
    wc.style         = 0;
    wc.lpfnWndProc   = (WNDPROC)MainWndProc;
    wc.cbClsExtra    = 0;
    wc.cbWndExtra    = 0;
    wc.hInstance     = hInstance;
    wc.hIcon         = 0;
    wc.hCursor       = LoadCursor (NULL,IDC_ARROW);
	wc.hbrBackground = NULL;
    wc.lpszMenuName  = 0;
    wc.lpszClassName = "WinQuake";

    if (!RegisterClass (&wc) )
		Sys_Error ("Couldn't register window class");

	modelist[0].type = MS_WINDOWED;

	if (COM_CheckParm("-width"))
		modelist[0].width = Q_atoi(com_argv[COM_CheckParm("-width")+1]);
	else
		modelist[0].width = 640;

	if (modelist[0].width < 320)
		modelist[0].width = 320;

	if (COM_CheckParm("-height"))
		modelist[0].height= Q_atoi(com_argv[COM_CheckParm("-height")+1]);
	else
		modelist[0].height = modelist[0].width * 240/320;

	if (modelist[0].height < 240)
		modelist[0].height = 240;

	sprintf (modelist[0].modedesc, "%dx%d",
			 modelist[0].width, modelist[0].height);

	modelist[0].modenum = MODE_WINDOWED;
	modelist[0].fullscreen = 0;
	modelist[0].halfscreen = 0;
	modelist[0].bpp = 0;

	nummodes = 1;
}


/*
=================
VID_InitFullDIB
=================
*/
void VID_InitFullDIB (HINSTANCE hInstance)
{
	DEVMODE	devmode;
	int		i, modenum, originalnummodes, numlowresmodes;
	int		j, bpp, done;
	BOOL	stat;
	int		width;
	qbool	halfscreen, existingmode;

// enumerate >8 bpp modes
	originalnummodes = nummodes;

	for (modenum = 0; nummodes < MAX_MODE_LIST; modenum++)
	{
		devmode.dmSize = sizeof(DEVMODE);
		devmode.dmDriverExtra = 0;

		stat = EnumDisplaySettings (NULL, modenum, &devmode);
		if (!stat)
			break;

		if ((devmode.dmBitsPerPel < 15) ||
			(devmode.dmPelsWidth > MAXWIDTH) ||
			(devmode.dmPelsHeight > MAXHEIGHT))
			continue;

		devmode.dmFields = DM_BITSPERPEL |
						   DM_PELSWIDTH |
						   DM_PELSHEIGHT |
						   DM_DISPLAYFREQUENCY;

		if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) !=
				DISP_CHANGE_SUCCESSFUL)
			continue;

		width = devmode.dmPelsWidth;
		halfscreen = false;

	// if the width is more than twice the height, reduce it by half because this
	// is probably a dual-screen monitor
		if (width > devmode.dmPelsHeight * 2)
		{
			if (!COM_CheckParm("-noadjustaspect"))
			{
				width /= 2;
				halfscreen = true;
			}
		}

		existingmode = false;
		for (i = originalnummodes; i<nummodes ; i++)
		{
			if ((modelist[i].width == width)   &&
				(modelist[i].height == devmode.dmPelsHeight) &&
				(modelist[i].bpp == devmode.dmBitsPerPel))
			{
				existingmode = true;
				// use highest available refresh frequency
				if (devmode.dmDisplayFrequency > modelist[i].freq)
					modelist[i].freq = devmode.dmDisplayFrequency;
				break;
			}
		}

		if (existingmode)
			continue;

		modelist[nummodes].type = MS_FULLDIB;
		modelist[nummodes].width = width;
		modelist[nummodes].height = devmode.dmPelsHeight;
		modelist[nummodes].modenum = 0;
		modelist[nummodes].halfscreen = 0;
		modelist[nummodes].fullscreen = 1;
		modelist[nummodes].bpp = devmode.dmBitsPerPel;
		modelist[nummodes].freq = devmode.dmDisplayFrequency;
		sprintf (modelist[nummodes].modedesc, "%ldx%ldx%ld",
				 devmode.dmPelsWidth, devmode.dmPelsHeight,
				 devmode.dmBitsPerPel);

		nummodes++;
	}

// see if there are any low-res modes that aren't being reported
	numlowresmodes = sizeof(lowresmodes) / sizeof(lowresmodes[0]);
	bpp = 16;
	done = 0;

	do
	{
		for (j=0 ; (j<numlowresmodes) && (nummodes < MAX_MODE_LIST) ; j++)
		{
			devmode.dmBitsPerPel = bpp;
			devmode.dmPelsWidth = lowresmodes[j].width;
			devmode.dmPelsHeight = lowresmodes[j].height;
			devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;

			if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
					DISP_CHANGE_SUCCESSFUL)
			{
				modelist[nummodes].type = MS_FULLDIB;
				modelist[nummodes].width = devmode.dmPelsWidth;
				modelist[nummodes].height = devmode.dmPelsHeight;
				modelist[nummodes].modenum = 0;
				modelist[nummodes].halfscreen = 0;
				modelist[nummodes].fullscreen = 1;
				modelist[nummodes].bpp = devmode.dmBitsPerPel;
				sprintf (modelist[nummodes].modedesc, "%ldx%ldx%ld",
						 devmode.dmPelsWidth, devmode.dmPelsHeight,
						 devmode.dmBitsPerPel);

				for (i=originalnummodes, existingmode = 0 ; i<nummodes ; i++)
				{
					if ((modelist[nummodes].width == modelist[i].width)   &&
						(modelist[nummodes].height == modelist[i].height) &&
						(modelist[nummodes].bpp == modelist[i].bpp))
					{
						existingmode = 1;
						break;
					}
				}

				if (!existingmode)
				{
					nummodes++;
				}
			}
		}
		switch (bpp)
		{
			case 16:
				bpp = 32;
				break;

			case 32:
				bpp = 24;
				break;

			case 24:
				done = 1;
				break;
		}
	} while (!done);

	if (nummodes == originalnummodes)
		Com_Printf ("No fullscreen DIB modes found\n");
}

static void FindDefaultMode (void)
{
	int		i, existingmode;
	int		width, height, bpp, findbpp, done;
	DEVMODE	devmode;

	memset(&devmode, 0, sizeof(devmode));

	if (COM_CheckParm("-window") || COM_CheckParm("-startwindowed"))
	{
		windowed = true;

		vid_default = MODE_WINDOWED;
	}
	else
	{
		if (nummodes == 1)
			Sys_Error ("No RGB fullscreen modes available");

		windowed = false;

		if (COM_CheckParm("-mode"))
		{
			vid_default = Q_atoi(com_argv[COM_CheckParm("-mode")+1]);
		}
		else
		{
			if (COM_CheckParm("-current"))
			{
				modelist[MODE_FULLSCREEN_DEFAULT].width =
						GetSystemMetrics (SM_CXSCREEN);
				modelist[MODE_FULLSCREEN_DEFAULT].height =
						GetSystemMetrics (SM_CYSCREEN);
				vid_default = MODE_FULLSCREEN_DEFAULT;
				leavecurrentmode = 1;
			}
			else
			{
				if (COM_CheckParm("-width"))
				{
					width = Q_atoi(com_argv[COM_CheckParm("-width")+1]);
				}
				else
				{
					width = 640;
				}

				if (COM_CheckParm("-bpp"))
				{
					bpp = Q_atoi(com_argv[COM_CheckParm("-bpp")+1]);
					findbpp = 0;
				}
				else
				{
					bpp = 32;
					findbpp = 1;
				}

				if (COM_CheckParm("-height"))
					height = Q_atoi(com_argv[COM_CheckParm("-height")+1]);

				// if they want to force it, add the specified mode to the list
				if (COM_CheckParm("-force") && (nummodes < MAX_MODE_LIST))
				{
					modelist[nummodes].type = MS_FULLDIB;
					modelist[nummodes].width = width;
					modelist[nummodes].height = height;
					modelist[nummodes].modenum = 0;
					modelist[nummodes].halfscreen = 0;
					modelist[nummodes].fullscreen = 1;
					modelist[nummodes].bpp = bpp;
					sprintf (modelist[nummodes].modedesc, "%ldx%ldx%ld",
							 devmode.dmPelsWidth, devmode.dmPelsHeight,
							 devmode.dmBitsPerPel);

					for (i=nummodes, existingmode = 0 ; i<nummodes ; i++)
					{
						if ((modelist[nummodes].width == modelist[i].width)   &&
							(modelist[nummodes].height == modelist[i].height) &&
							(modelist[nummodes].bpp == modelist[i].bpp))
						{
							existingmode = 1;
							break;
						}
					}

					if (!existingmode)
					{
						nummodes++;
					}
				}

				done = 0;

				do
				{
					if (COM_CheckParm("-height"))
					{
						height = Q_atoi(com_argv[COM_CheckParm("-height")+1]);

						for (i=1, vid_default=0 ; i<nummodes ; i++)
						{
							if ((modelist[i].width == width) &&
								(modelist[i].height == height) &&
								(modelist[i].bpp == bpp))
							{
								vid_default = i;
								done = 1;
								break;
							}
						}
					}
					else
					{
						int j;
						int bestheight = (width * 3) / 4;

						vid_default = 0;
						for (j = 0; j < 2 && vid_default == 0; j++)
						{
							for (i = 1; i < nummodes; i++)
							{
								if ((modelist[i].width == width) &&
								    (modelist[i].bpp == bpp) &&
								    (j || modelist[i].height == bestheight))
								{
									vid_default = i;
									done = 1;
									break;
								}
							}
						}
					}

					if (!done)
					{
						if (findbpp)
						{
							switch (bpp)
							{
							case 32:
								bpp = 16;
								break;
							case 16:
								bpp = 15;
								break;
							case 15:
								bpp = 24;
								break;
							case 24:
								done = 1;
								break;
							}
						}
						else
						{
							done = 1;
						}
					}
				} while (!done);

				if (!vid_default)
				{
					Sys_Error ("Specified video mode not available");
				}
			}
		}
	}
}

/*
===================
VID_Init
===================
*/
void CL_VID_Restart_f (void);
void VID_Init (unsigned char *palette)
{
	int i;

	Cvar_Register (&vid_ref);
	Cvar_Register (&gl_mode);
	Cvar_Register (&_vid_default_mode);
	Cvar_Register (&_vid_default_mode_win);
	Cvar_Register (&vid_config_x);
	Cvar_Register (&vid_config_y);
	Cvar_Register (&vid_stretch_by_2);
	Cvar_Register (&_windowed_mouse);
	Cvar_Register (&vid_hwgammacontrol);
	Cvar_Register (&vid_displayfrequency);
	Cvar_Register (&vid_vsync);
	Cvar_Register (&gl_ext_swapinterval);

	Cmd_AddCommand ("vid_modelist", VID_ModeList_f);
	Cmd_AddCommand ("vid_restart", CL_VID_Restart_f);

	hIcon = LoadIcon (global_hInstance, MAKEINTRESOURCE (IDI_APPICON));

	VID_InitDIB (global_hInstance);
	VID_InitFullDIB (global_hInstance);
	FindDefaultMode ();

	vid_initialized = true;

	if ((i = COM_CheckParm("-conwidth")) != 0)
		vid.width = Q_atoi(com_argv[i+1]);
	else
		vid.width = 640;

	vid.width &= 0xfff8; // make it a multiple of eight

	if (vid.width < 320)
		vid.width = 320;

	// pick a conheight that matches with correct aspect
	vid.height = vid.width * 3 / 4;

	if ((i = COM_CheckParm("-conheight")) != 0)
		vid.height = Q_atoi(com_argv[i+1]);
	if (vid.height < 200)
		vid.height = 200;
#ifndef USEFAKEGL
	if (hwnd_dialog) {
		DestroyWindow (hwnd_dialog);
		hwnd_dialog = NULL;
	}
#endif

	VID_SetMode (vid_default, palette);

	maindc = GetDC(mainwindow);
	bSetupPixelFormat(maindc);

	InitHWGamma ();

	baseRC = wglCreateContext( maindc );
	if (!baseRC)
		Sys_Error ("Could not initialize GL (wglCreateContext failed).\n\nMake sure you in are 65535 color mode, and try running -window.");
	if (!wglMakeCurrent( maindc, baseRC ))
		Sys_Error ("wglMakeCurrent failed");

	GL_Init ();

	vid_menudrawfn = VID_MenuDraw;
	vid_menukeyfn = VID_MenuKey;

	strcpy (badmode.modedesc, "Bad mode");
	vid_canalttab = true;

	if (COM_CheckParm("-fullsbar"))
		fullsbardraw = true;
}

void VID_Restart ()
{
	if (baseRC)
		wglDeleteContext (baseRC);
	VID_SetMode (gl_mode.value, host_basepal);
	baseRC = wglCreateContext( maindc );
	if (!baseRC)
		Sys_Error ("Could not initialize GL (wglCreateContext failed).\n\nMake sure you in are 65535 color mode, and try running -window.");
	if (!wglMakeCurrent( maindc, baseRC ))
		Sys_Error ("wglMakeCurrent failed");

	GL_Init ();
}

void R_Draw_Init (void);
void CL_ReloadTextures (void);

void CL_VID_Restart_f ()
{
	VID_Restart ();

	R_InitTextures ();

	// force models to reload
	Cache_Flush ();

	// free old data and load a new gfx.wad
	R_Draw_Init ();

	CL_ReloadTextures ();

	GL_BuildLightmaps ();
}


//========================================================
// Video menu stuff
//========================================================

extern void M_Menu_Options_f (void);
extern void M_Print (int cx, int cy, char *str);
extern void M_PrintWhite (int cx, int cy, char *str);
extern void M_DrawChar (int cx, int line, int num);
extern void M_DrawPic (int x, int y, mpic_t *pic);

static int	vid_wmodes;

typedef struct
{
	int		modenum;
	char	*desc;
	int		iscur;
} modedesc_t;

#define MAX_COLUMN_SIZE		9
#define MODE_AREA_HEIGHT	(MAX_COLUMN_SIZE + 2)
#define MAX_MODEDESCS		(MAX_COLUMN_SIZE*3)

static modedesc_t	modedescs[MAX_MODEDESCS];

/*
================
VID_MenuDraw
================
*/
void VID_MenuDraw (void)
{
	mpic_t		*p;
	char		*ptr;
	int			lnummodes, i, k, column, row;
	vmode_t		*pv;

	p = R_CachePic ("gfx/vidmodes.lmp");
	M_DrawPic ( (320-p->width)/2, 4, p);

	vid_wmodes = 0;
	lnummodes = VID_NumModes ();

	for (i=1 ; (i<lnummodes) && (vid_wmodes < MAX_MODEDESCS) ; i++)
	{
		ptr = VID_GetModeDescription (i);
		pv = VID_GetModePtr (i);

		k = vid_wmodes;

		modedescs[k].modenum = i;
		modedescs[k].desc = ptr;
		modedescs[k].iscur = 0;

		if (i == vid_modenum)
			modedescs[k].iscur = 1;

		vid_wmodes++;

	}

	if (vid_wmodes > 0)
	{
		M_Print (2*8, 36+0*8, "Fullscreen Modes (WIDTHxHEIGHTxBPP)");

		column = 8;
		row = 36+2*8;

		for (i=0 ; i<vid_wmodes ; i++)
		{
			if (modedescs[i].iscur)
				M_PrintWhite (column, row, modedescs[i].desc);
			else
				M_Print (column, row, modedescs[i].desc);

			column += 13*8;

			if ((i % VID_ROW_SIZE) == (VID_ROW_SIZE - 1))
			{
				column = 8;
				row += 8;
			}
		}
	}

	M_Print (3*8, 36 + MODE_AREA_HEIGHT * 8 + 8*2,
			 "Video modes must be set from the");
	M_Print (3*8, 36 + MODE_AREA_HEIGHT * 8 + 8*3,
			 "command line with -width <width>");
	M_Print (3*8, 36 + MODE_AREA_HEIGHT * 8 + 8*4,
			 "and -bpp <bits-per-pixel>");
	M_Print (3*8, 36 + MODE_AREA_HEIGHT * 8 + 8*6,
			 "Select windowed mode with -window");
}


/*
================
VID_MenuKey
================
*/
void VID_MenuKey (int key)
{
	switch (key)
	{
	case K_ESCAPE:
		S_LocalSound ("misc/menu1.wav");
		M_Menu_Options_f ();
		break;

	default:
		break;
	}
}
