/*
Copyright (C) 1997-2001 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.

*/

#include "extdll.h"
#include "basemenu.h"
#include "utils.h"
#include "menu_btnsbmp_table.h"
#include "mathlib.h"

#define ART_BANNER	  	"gfx/shell/head_vidoptions"
#define ART_GAMMA		"gfx/shell/gamma"

#define ID_BACKGROUND 	0
#define ID_BANNER	  	1
#define ID_DONE	  	2
#define ID_CONFIGLABEL	3
#define ID_VIDEOCONFIG	4
#define ID_GAMMA		5
#define ID_GLARE_REDUCTION	6 
#define ID_SIMPLE_SKY	7
#define ID_ALLOW_MATERIALS	8

typedef struct
{
	int		outlineWidth;
	menuFramework_s	menu;

	menuBitmap_s	background;
	menuBitmap_s	banner;
	menuBitmap_s	testImage;

	menuPicButton_s	done;

	menuAction_s	configLabel;
	menuSpinControl_s	videoConfig;
	menuSlider_s	gammaIntensity;
	menuSlider_s	glareReduction;
	menuCheckBox_s	fastSky;
	menuCheckBox_s	hiTextures;

	HIMAGE		hTestImage;
} uiVidOptions_t;

static char *videoConfigs[] =
{
	"safemode",
	"ultralow",
	"low",
	"medium",
	"high",
	"higher",
	"ultrahigh",
};

static uiVidOptions_t	uiVidOptions;


/*
=================
UI_VidOptions_GetConfig
=================
*/
static void UI_VidOptions_GetConfig( void )
{
	uiVidOptions.glareReduction.curValue = CVAR_GET_FLOAT( "brightness" );
	uiVidOptions.gammaIntensity.curValue = RemapVal( CVAR_GET_FLOAT( "gamma" ), 1.8f, 3.0f, 0.0f, 1.0f );
	PIC_SetGamma( uiVidOptions.hTestImage, 1.0f );

	// select current video config
	for( int i = 0; i < ARRAYSIZE( videoConfigs ); i++ )
	{
		if( !stricmp( videoConfigs[i], CVAR_GET_STRING( "video_config" )))
		{
			uiVidOptions.videoConfig.generic.name = videoConfigs[i];
			uiVidOptions.videoConfig.curValue = (float)i;
			break;
		}
	}

	if( CVAR_GET_FLOAT( "r_fastsky" ))
		uiVidOptions.fastSky.enabled = 1;

	if( CVAR_GET_FLOAT( "host_allow_materials" ))
		uiVidOptions.hiTextures.enabled = 1;

	uiVidOptions.outlineWidth = 2;
	UI_ScaleCoords( NULL, NULL, &uiVidOptions.outlineWidth, NULL );
}

/*
=================
UI_VidOptions_UpdateConfig
=================
*/
static void UI_VidOptions_UpdateConfig( void )
{
	uiVidOptions.videoConfig.generic.name = videoConfigs[(int)uiVidOptions.videoConfig.curValue];

	CVAR_SET_FLOAT( "brightness", uiVidOptions.glareReduction.curValue );
	CVAR_SET_FLOAT( "r_fastsky", uiVidOptions.fastSky.enabled );
	CVAR_SET_FLOAT( "host_allow_materials", uiVidOptions.hiTextures.enabled );
	CVAR_SET_FLOAT( "gamma", RemapVal( uiVidOptions.gammaIntensity.curValue, 0.0f, 1.0f, 1.8f, 3.0f ));
	PIC_SetGamma( uiVidOptions.hTestImage, 1.0f );
}

static void UI_VidOptions_SetConfig( void )
{
	CVAR_SET_FLOAT( "brightness", uiVidOptions.glareReduction.curValue );
	CVAR_SET_FLOAT( "r_fastsky", uiVidOptions.fastSky.enabled );
	CVAR_SET_FLOAT( "host_allow_materials", uiVidOptions.hiTextures.enabled );
	CVAR_SET_FLOAT( "gamma", RemapVal( uiVidOptions.gammaIntensity.curValue, 0.0f, 1.0f, 1.8f, 3.0f ));
	CVAR_SET_STRING( "video_config", videoConfigs[(int)uiVidOptions.videoConfig.curValue] );

	char cmd[128];
	sprintf( cmd, "exec scripts/%s.cfg\n", CVAR_GET_STRING( "video_config" ));
	
	CLIENT_COMMAND( FALSE, cmd );
}

/*
=================
UI_VidOptions_Ownerdraw
=================
*/
static void UI_VidOptions_Ownerdraw( void *self )
{
	menuCommon_s	*item = (menuCommon_s *)self;
	int		color = 0xFFFF0000; // 255, 0, 0, 255
	int		viewport[4];
	int		viewsize, size, sb_lines;

	viewsize = CVAR_GET_FLOAT( "viewsize" );

	if( viewsize >= 120 )
		sb_lines = 0;	// no status bar at all
	else if( viewsize >= 110 )
		sb_lines = 24;	// no inventory
	else sb_lines = 48;

	size = min( viewsize, 100 );

	viewport[2] = item->width * size / 100;
	viewport[3] = item->height * size / 100;

	if( viewport[3] > item->height - sb_lines )
		viewport[3] = item->height - sb_lines;
	if( viewport[3] > item->height )
		viewport[3] = item->height;

	viewport[2] &= ~7;
	viewport[3] &= ~1;

	viewport[0] = (item->width - viewport[2]) / 2;
	viewport[1] = (item->height - sb_lines - viewport[3]) / 2;

	UI_DrawPic( item->x + viewport[0], item->y + viewport[1], viewport[2], viewport[3], uiColorWhite, ((menuBitmap_s *)self)->pic );
	UI_DrawRectangleExt( item->x, item->y, item->width, item->height, color, uiVidOptions.outlineWidth );
}

/*
=================
UI_VidOptions_Callback
=================
*/
static void UI_VidOptions_Callback( void *self, int event )
{
	menuCommon_s	*item = (menuCommon_s *)self;

	switch( item->id )
	{
	case ID_SIMPLE_SKY:
	case ID_ALLOW_MATERIALS:
		if( event == QM_PRESSED )
			((menuCheckBox_s *)self)->focusPic = UI_CHECKBOX_PRESSED;
		else ((menuCheckBox_s *)self)->focusPic = UI_CHECKBOX_FOCUS;
		break;
	}

	if( event == QM_CHANGED )
	{
		UI_VidOptions_UpdateConfig();
		return;
	}

	if( event != QM_ACTIVATED )
		return;

	switch( item->id )
	{
	case ID_DONE:
		UI_VidOptions_SetConfig();
		UI_PopMenu();
		break;
	}
}

/*
=================
UI_VidOptions_Init
=================
*/
static void UI_VidOptions_Init( void )
{
	memset( &uiVidOptions, 0, sizeof( uiVidOptions_t ));

	uiVidOptions.hTestImage = PIC_Load( ART_GAMMA, PIC_KEEP_SOURCE );

	uiVidOptions.menu.vidInitFunc = UI_VidOptions_Init;

	uiVidOptions.background.generic.id = ID_BACKGROUND;
	uiVidOptions.background.generic.type = QMTYPE_BITMAP;
	uiVidOptions.background.generic.flags = QMF_INACTIVE;
	uiVidOptions.background.generic.x = 0;
	uiVidOptions.background.generic.y = 0;
	uiVidOptions.background.generic.width = 1024;
	uiVidOptions.background.generic.height = 768;
	uiVidOptions.background.pic = ART_BACKGROUND;

	uiVidOptions.banner.generic.id = ID_BANNER;
	uiVidOptions.banner.generic.type = QMTYPE_BITMAP;
	uiVidOptions.banner.generic.flags = QMF_INACTIVE|QMF_DRAW_ADDITIVE;
	uiVidOptions.banner.generic.x = UI_BANNER_POSX;
	uiVidOptions.banner.generic.y = UI_BANNER_POSY;
	uiVidOptions.banner.generic.width = UI_BANNER_WIDTH;
	uiVidOptions.banner.generic.height = UI_BANNER_HEIGHT;
	uiVidOptions.banner.pic = ART_BANNER;

	uiVidOptions.testImage.generic.id = ID_BANNER;
	uiVidOptions.testImage.generic.type = QMTYPE_BITMAP;
	uiVidOptions.testImage.generic.flags = QMF_INACTIVE;
	uiVidOptions.testImage.generic.x = 390;
	uiVidOptions.testImage.generic.y = 225;
	uiVidOptions.testImage.generic.width = 480;
	uiVidOptions.testImage.generic.height = 450;
	uiVidOptions.testImage.pic = ART_GAMMA;
	uiVidOptions.testImage.generic.ownerdraw = UI_VidOptions_Ownerdraw;

	uiVidOptions.done.generic.id = ID_DONE;
	uiVidOptions.done.generic.type = QMTYPE_BM_BUTTON;
	uiVidOptions.done.generic.flags = QMF_HIGHLIGHTIFFOCUS|QMF_DROPSHADOW;
	uiVidOptions.done.generic.x = 72;
	uiVidOptions.done.generic.y = 435;
	uiVidOptions.done.generic.name = "Done";
	uiVidOptions.done.generic.statusText = "Go back to the Video Menu";
	uiVidOptions.done.generic.callback = UI_VidOptions_Callback;

	UI_UtilSetupPicButton( &uiVidOptions.done, PC_DONE );

	uiVidOptions.configLabel.generic.id = ID_CONFIGLABEL;
	uiVidOptions.configLabel.generic.type = QMTYPE_ACTION;
	uiVidOptions.configLabel.generic.flags = QMF_INACTIVE|QMF_DROPSHADOW|QMF_LEFT_JUSTIFY;
	uiVidOptions.configLabel.generic.name = "Graphics Quality";
	uiVidOptions.configLabel.generic.color = uiColorHelp;
	uiVidOptions.configLabel.generic.charWidth = 12;
	uiVidOptions.configLabel.generic.charHeight = 24;
	uiVidOptions.configLabel.generic.x = 72;
	uiVidOptions.configLabel.generic.y = 218;
	uiVidOptions.configLabel.generic.width = 156;
	uiVidOptions.configLabel.generic.height = 32;

	uiVidOptions.videoConfig.generic.id = ID_VIDEOCONFIG;
	uiVidOptions.videoConfig.generic.type = QMTYPE_SPINCONTROL;
	uiVidOptions.videoConfig.generic.flags = QMF_CENTER_JUSTIFY|QMF_HIGHLIGHTIFFOCUS|QMF_DROPSHADOW|QMF_SMALLFONT;
	uiVidOptions.videoConfig.generic.x = 98;
	uiVidOptions.videoConfig.generic.y = 258;
	uiVidOptions.videoConfig.generic.width = 148;
	uiVidOptions.videoConfig.generic.height = 24;
	uiVidOptions.videoConfig.generic.callback = UI_VidOptions_Callback;
	uiVidOptions.videoConfig.generic.statusText = "Select the optimal perfomance config";
	uiVidOptions.videoConfig.minValue = 0;
	uiVidOptions.videoConfig.maxValue = ARRAYSIZE( videoConfigs ) - 1;
	uiVidOptions.videoConfig.range = 1;

	uiVidOptions.gammaIntensity.generic.id = ID_GAMMA;
	uiVidOptions.gammaIntensity.generic.type = QMTYPE_SLIDER;
	uiVidOptions.gammaIntensity.generic.flags = QMF_PULSEIFFOCUS|QMF_DROPSHADOW;
	uiVidOptions.gammaIntensity.generic.name = "Gamma";
	uiVidOptions.gammaIntensity.generic.x = 72;
	uiVidOptions.gammaIntensity.generic.y = 340;
	uiVidOptions.gammaIntensity.generic.callback = UI_VidOptions_Callback;
	uiVidOptions.gammaIntensity.generic.statusText = "Set gamma value (0.5 - 2.3)";
	uiVidOptions.gammaIntensity.minValue = 0.0;
	uiVidOptions.gammaIntensity.maxValue = 1.0;
	uiVidOptions.gammaIntensity.range = 0.05f;

	uiVidOptions.glareReduction.generic.id = ID_GLARE_REDUCTION;
	uiVidOptions.glareReduction.generic.type = QMTYPE_SLIDER;
	uiVidOptions.glareReduction.generic.flags = QMF_PULSEIFFOCUS|QMF_DROPSHADOW;
	uiVidOptions.glareReduction.generic.name = "Glare reduction";
	uiVidOptions.glareReduction.generic.x = 72;
	uiVidOptions.glareReduction.generic.y = 400;
	uiVidOptions.glareReduction.generic.callback = UI_VidOptions_Callback;
	uiVidOptions.glareReduction.generic.statusText = "Set glare reduction level";
	uiVidOptions.glareReduction.minValue = 0.0;
	uiVidOptions.glareReduction.maxValue = 1.0;
	uiVidOptions.glareReduction.range = 0.05f;

	uiVidOptions.fastSky.generic.id = ID_SIMPLE_SKY;
	uiVidOptions.fastSky.generic.type = QMTYPE_CHECKBOX;
	uiVidOptions.fastSky.generic.flags = QMF_HIGHLIGHTIFFOCUS|QMF_ACT_ONRELEASE|QMF_MOUSEONLY|QMF_DROPSHADOW;
	uiVidOptions.fastSky.generic.name = "Draw simple sky";
	uiVidOptions.fastSky.generic.x = 72;
	uiVidOptions.fastSky.generic.y = 615;
	uiVidOptions.fastSky.generic.callback = UI_VidOptions_Callback;
	uiVidOptions.fastSky.generic.statusText = "enable/disable fast sky rendering (for old computers)";

	uiVidOptions.hiTextures.generic.id = ID_ALLOW_MATERIALS;
	uiVidOptions.hiTextures.generic.type = QMTYPE_CHECKBOX;
	uiVidOptions.hiTextures.generic.flags = QMF_HIGHLIGHTIFFOCUS|QMF_ACT_ONRELEASE|QMF_MOUSEONLY|QMF_DROPSHADOW;
	uiVidOptions.hiTextures.generic.name = "Allow materials";
	uiVidOptions.hiTextures.generic.x = 72;
	uiVidOptions.hiTextures.generic.y = 665;
	uiVidOptions.hiTextures.generic.callback = UI_VidOptions_Callback;
	uiVidOptions.hiTextures.generic.statusText = "let engine replace 8-bit textures with full color hi-res prototypes (if present)";

	UI_VidOptions_GetConfig();

	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.background );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.banner );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.done );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.configLabel );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.videoConfig );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.gammaIntensity );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.glareReduction );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.fastSky );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.hiTextures );
	UI_AddItem( &uiVidOptions.menu, (void *)&uiVidOptions.testImage );
}

/*
=================
UI_VidOptions_Precache
=================
*/
void UI_VidOptions_Precache( void )
{
	PIC_Load( ART_BACKGROUND );
	PIC_Load( ART_BANNER );
}

/*
=================
UI_VidOptions_Menu
=================
*/
void UI_VidOptions_Menu( void )
{
	UI_VidOptions_Precache();
	UI_VidOptions_Init();

	UI_PushMenu( &uiVidOptions.menu );
}