/* Copyright (c) 2002-2012 Croteam Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as published by
the Free Software Foundation

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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */

#include "StdH.h"
#include <Engine/Base/KeyNames.h>
#include <Engine/CurrentVersion.h>
#include <GameMP/LCDDrawing.h>
#include "MGTrigger.h"


INDEX GetNewLoopValue(int iVKey, INDEX iCurrent, INDEX ctMembers)
{
	INDEX iPrev = (iCurrent + ctMembers - 1) % ctMembers;
	INDEX iNext = (iCurrent + 1) % ctMembers;
	// return and right arrow set new text
	if (iVKey == VK_RETURN || iVKey == VK_LBUTTON || iVKey == VK_RIGHT)
	{
		return iNext;
	}
	// left arrow and backspace sets prev text
	else if ((iVKey == VK_BACK || iVKey == VK_RBUTTON) || (iVKey == VK_LEFT))
	{
		return iPrev;
	}
	return iCurrent;
}

CMGTrigger::CMGTrigger(void)
{
	mg_pPreTriggerChange = NULL;
	mg_pOnTriggerChange = NULL;
	mg_iCenterI = 0;
	mg_bVisual = FALSE;
}

void CMGTrigger::ApplyCurrentSelection(void)
{
	mg_iSelected = Clamp(mg_iSelected, 0L, mg_ctTexts - 1L);
	mg_strValue = mg_astrTexts[mg_iSelected];
}

void CMGTrigger::OnSetNextInList(int iVKey)
{
	if (mg_pPreTriggerChange != NULL) {
		mg_pPreTriggerChange(mg_iSelected);
	}

	mg_iSelected = GetNewLoopValue(iVKey, mg_iSelected, mg_ctTexts);
	mg_strValue = mg_astrTexts[mg_iSelected];

	if (mg_pOnTriggerChange != NULL) {
		(*mg_pOnTriggerChange)(mg_iSelected);
	}
}

BOOL CMGTrigger::OnKeyDown(int iVKey)
{
	if ((iVKey == VK_RETURN || iVKey == VK_LBUTTON) ||
		(iVKey == VK_LEFT) ||
		(iVKey == VK_BACK || iVKey == VK_RBUTTON) ||
		(iVKey == VK_RIGHT))
	{
		// key is handled
		if (mg_bEnabled) OnSetNextInList(iVKey);
		return TRUE;
	}
	// key is not handled
	return FALSE;
}

void CMGTrigger::Render(CDrawPort *pdp)
{
	SetFontMedium(pdp);

	PIXaabbox2D box = FloatBoxToPixBox(pdp, mg_boxOnScreen);
	PIX pixIL = box.Min()(1) + box.Size()(1)*0.45f;
	PIX pixIR = box.Min()(1) + box.Size()(1)*0.55f;
	PIX pixJ = box.Min()(2);

	COLOR col = GetCurrentColor();
	if (!mg_bVisual || mg_strValue == "") {
		CTString strValue = mg_strValue;
		if (mg_bVisual) {
			strValue = TRANS("none");
		}
		if (mg_iCenterI == -1) {
			pdp->PutText(mg_strLabel, box.Min()(1), pixJ, col);
			pdp->PutTextR(strValue, box.Max()(1), pixJ, col);
		}
		else {
			pdp->PutTextR(mg_strLabel, pixIL, pixJ, col);
			pdp->PutText(strValue, pixIR, pixJ, col);
		}
	}
	else {
		CTString strLabel = mg_strLabel + ": ";
		pdp->PutText(strLabel, box.Min()(1), pixJ, col);
		CTextureObject to;
		try {
			to.SetData_t(mg_strValue);
			CTextureData *ptd = (CTextureData *)to.GetData();
			PIX pixSize = box.Size()(2);
			PIX pixCX = box.Max()(1) - pixSize / 2;
			PIX pixCY = box.Center()(2);
			pdp->PutTexture(&to, PIXaabbox2D(
				PIX2D(pixCX - pixSize / 2, pixCY - pixSize / 2),
				PIX2D(pixCX - pixSize / 2 + pixSize, pixCY - pixSize / 2 + pixSize)), C_WHITE | 255);
		}
		catch (char *strError) {
			CPrintF("%s\n", strError);
		}
		to.SetData(NULL);
	}
}