/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of Penumbra Overture.
 */

#include "hpl1/penumbra-overture/GraphicsHelper.h"

#include "hpl1/penumbra-overture/Init.h"

//-----------------------------------------------------------------------

//////////////////////////////////////////////////////////////////////////
// CONSTRUCTORS
//////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------

cGraphicsHelper::cGraphicsHelper(cInit *apInit) {
	mpInit = apInit;

	mpLowLevelGfx = mpInit->mpGame->GetGraphics()->GetLowLevel();
	mpTexManager = mpInit->mpGame->GetResources()->GetTextureManager();

	mpDrawer = mpInit->mpGame->GetGraphics()->GetDrawer();

	mpFont = mpInit->mpGame->GetResources()->GetFontManager()->CreateFontData("font_menu_small.fnt");

	mvVtx.resize(4);
}

cGraphicsHelper::~cGraphicsHelper() {
}

//-----------------------------------------------------------------------

//////////////////////////////////////////////////////////////////////////
// PUBLIC METHODS
//////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------

void cGraphicsHelper::ClearScreen(const cColor &aColor) {
	mpLowLevelGfx->SetClearColor(aColor);
	mpLowLevelGfx->ClearScreen();
}

//-----------------------------------------------------------------------

void cGraphicsHelper::DrawTexture(iTexture *apTex, const cVector3f &avPos, const cVector3f &avSize,
								  const cColor &aColor) {
	mpLowLevelGfx->SetDepthTestActive(false);
	mpLowLevelGfx->PushMatrix(eMatrix_ModelView);
	mpLowLevelGfx->SetIdentityMatrix(eMatrix_ModelView);
	mpLowLevelGfx->SetOrthoProjection(mpLowLevelGfx->GetVirtualSize(), -1000, 1000);

	mvVtx[0] = cVertex(avPos + cVector3f(0, 0, 0), cVector2f(0.01f, 0.01f), aColor);
	mvVtx[1] = cVertex(avPos + cVector3f(avSize.x, 0, 0), cVector2f(0.99f, 0.01f), aColor);
	mvVtx[2] = cVertex(avPos + cVector3f(avSize.x, avSize.y, 0), cVector2f(0.99f, 0.99f), aColor);
	mvVtx[3] = cVertex(avPos + cVector3f(0, avSize.y, 0), cVector2f(0.01f, 0.99f), aColor);

	mpLowLevelGfx->SetBlendActive(false);

	for (int i = 0; i < 6; ++i)
		mpLowLevelGfx->SetTexture(i, NULL);

	mpLowLevelGfx->SetTexture(0, apTex);

	mpLowLevelGfx->DrawQuad(mvVtx);

	mpLowLevelGfx->SetTexture(0, NULL);

	mpLowLevelGfx->PopMatrix(eMatrix_ModelView);
}

//-----------------------------------------------------------------------

void cGraphicsHelper::DrawLoadingScreen(const tString &asFile) {
	iTexture *pTex = NULL;

	if (asFile != "")
		pTex = mpTexManager->Create2D(asFile, false);

	if (pTex || asFile == "") {
		ClearScreen(cColor(0, 0));

		if (pTex)
			DrawTexture(pTex, cVector3f(0, 0, 0), cVector2f(800, 600), cColor(1, 1));

		mpFont->draw(cVector3f(400, 300, 50), 22, cColor(1, 1), eFontAlign_Center,
					kTranslate("LoadTexts", "Loading"));

		mpDrawer->DrawAll();

		SwapBuffers();
	}

	if (pTex)
		mpTexManager->Destroy(pTex);
}

//-----------------------------------------------------------------------

void cGraphicsHelper::SwapBuffers() {
	mpLowLevelGfx->SwapBuffers();
}

//-----------------------------------------------------------------------