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

    file                 : graphconfig.cpp
    created              : Sun Jun  9 16:30:25 CEST 2002
    copyright            : (C) 2001 by Eric Espie
    email                : eric.espie@torcs.org
    version              : $Id: graphconfig.cpp,v 1.5 2005/07/21 21:27:14 berniw Exp $

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

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

/** @file   
    		
    @author	<a href=mailto:eric.espie@torcs.org>Eric Espie</a>
    @version	$Id: graphconfig.cpp,v 1.5 2005/07/21 21:27:14 berniw Exp $
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tgfclient.h>
#include <graphic.h>

#include "graphconfig.h"

static void	*scrHandle = NULL;
static char	buf[1024];
static int	FovEditId;
static int	FovFactorValue = 100;
static int	SmokeEditId;
static int	SmokeValue = 300;
static int	SkidEditId;
static int	SkidValue = 20;
static int	LodFactorEditId;
static tdble	LodFactorValue = 1.0;


static void
ExitGraphicOptions(void *prevMenu)
{
    GfuiScreenActivate(prevMenu);
}

static void
SaveGraphicOptions(void *prevMenu)
{
	sprintf(buf, "%s%s", GetLocalDir(), GR_PARAM_FILE);
	void * grHandle = GfParmReadFile(buf, GFPARM_RMODE_STD | GFPARM_RMODE_CREAT);

	GfParmSetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_FOVFACT, "%", FovFactorValue);
	GfParmSetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_SMOKENB, NULL, SmokeValue);
	GfParmSetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_MAXSTRIPBYWHEEL, NULL, SkidValue);
	GfParmSetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_LODFACTOR, NULL, LodFactorValue);
	GfParmWriteFile(NULL, grHandle, "graph");

	GfParmReleaseHandle(grHandle);

	ExitGraphicOptions(prevMenu);
}

static void
ChangeFov(void * /* dummy */)
{
    char	*val;

    val = GfuiEditboxGetString(scrHandle, FovEditId);
    FovFactorValue = strtol(val, (char **)NULL, 0);
    sprintf(buf, "%d", FovFactorValue);
    GfuiEditboxSetString(scrHandle, FovEditId, buf);
}

static void
ChangeLodFactor(void * /* dummy */)
{
    char	*val;

    val = GfuiEditboxGetString(scrHandle, LodFactorEditId);
    sscanf(val, "%g", &LodFactorValue);
    sprintf(buf, "%g", LodFactorValue);
    GfuiEditboxSetString(scrHandle, LodFactorEditId, buf);
}

static void
ChangeSmoke(void * /* dummy */)
{
    char	*val;

    val = GfuiEditboxGetString(scrHandle, SmokeEditId);
    SmokeValue = strtol(val, (char **)NULL, 0);
    sprintf(buf, "%d", SmokeValue);
    GfuiEditboxSetString(scrHandle, SmokeEditId, buf);
}

static void
ChangeSkid(void * /* dummy */)
{
    char	*val;

    val = GfuiEditboxGetString(scrHandle, SkidEditId);
    SkidValue = strtol(val, (char **)NULL, 0);
    sprintf(buf, "%d", SkidValue);
    GfuiEditboxSetString(scrHandle, SkidEditId, buf);
}


void *
GraphMenuInit(void *prevMenu)
{
    int		x, y, x2, dy;

    /* screen already created */
    if (scrHandle) {
	return scrHandle;
    }
    
    scrHandle = GfuiMenuScreenCreate("Graphic Configuration");

    GfuiScreenAddBgImg(scrHandle, "data/img/splash-graphconf.png");

    sprintf(buf, "%s%s", GetLocalDir(), GR_PARAM_FILE);
    void * grHandle = GfParmReadFile(buf, GFPARM_RMODE_STD | GFPARM_RMODE_CREAT);

    x = 50;
    x2 = 200;
    y = 370;
    dy = 30;

    GfuiLabelCreate(scrHandle, "Visibility (%):", GFUI_FONT_MEDIUM, x, y, GFUI_ALIGN_HL_VB, 0);
    FovFactorValue = (int)GfParmGetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_FOVFACT, "%", 100.0);
    sprintf(buf, "%d", FovFactorValue);
    FovEditId = GfuiEditboxCreate(scrHandle, buf, GFUI_FONT_MEDIUM_C,
				  x2+10, y, 100, 16, NULL, (tfuiCallback)NULL, ChangeFov);

    y -= dy;
    GfuiLabelCreate(scrHandle, "Smoke:", GFUI_FONT_MEDIUM, x, y, GFUI_ALIGN_HL_VB, 0);
    SmokeValue = (int)GfParmGetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_SMOKENB, NULL, 300.0);
    sprintf(buf, "%d", SmokeValue);
    SmokeEditId = GfuiEditboxCreate(scrHandle, buf, GFUI_FONT_MEDIUM_C,
				    x2+10, y, 100, 16, NULL, (tfuiCallback)NULL, ChangeSmoke);

    y -= dy;
    GfuiLabelCreate(scrHandle, "Skid Marks:", GFUI_FONT_MEDIUM, x, y, GFUI_ALIGN_HL_VB, 0);
    SkidValue = (int)GfParmGetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_MAXSTRIPBYWHEEL, NULL, 20.0);
    sprintf(buf, "%d", SkidValue);
    SkidEditId = GfuiEditboxCreate(scrHandle, buf, GFUI_FONT_MEDIUM_C,
				   x2+10, y, 100, 16, NULL, (tfuiCallback)NULL, ChangeSkid);

    y -= dy;
    GfuiLabelCreate(scrHandle, "LOD factor:", GFUI_FONT_MEDIUM, x, y, GFUI_ALIGN_HL_VB, 0);
    LodFactorValue = GfParmGetNum(grHandle, GR_SCT_GRAPHIC, GR_ATT_LODFACTOR, NULL, 1.0);
    sprintf(buf, "%g", LodFactorValue);
    LodFactorEditId = GfuiEditboxCreate(scrHandle, buf, GFUI_FONT_MEDIUM_C,
					x2+10, y, 100, 16, NULL, (tfuiCallback)NULL, ChangeLodFactor);


    GfuiButtonCreate(scrHandle, "Accept", GFUI_FONT_LARGE, 210, 40, 150, GFUI_ALIGN_HC_VB, GFUI_MOUSE_UP,
		     prevMenu, SaveGraphicOptions, NULL, (tfuiCallback)NULL, (tfuiCallback)NULL);

    GfuiButtonCreate(scrHandle, "Cancel", GFUI_FONT_LARGE, 430, 40, 150, GFUI_ALIGN_HC_VB, GFUI_MOUSE_UP,
		     prevMenu, GfuiScreenActivate, NULL, (tfuiCallback)NULL, (tfuiCallback)NULL);

    GfuiAddKey(scrHandle, 27, "Cancel", prevMenu, GfuiScreenActivate, NULL);

	GfParmReleaseHandle(grHandle);

    return scrHandle;
}