#include <stdio.h>
#include <midiapp/led.hpp>

void LedDisplay::paint(void)
{
	HBITMAP hOldBitmap;
	HDC hDisplayDC;
	HDC hMemDC;
	WORD firstOffset;
	WORD secondOffset;
	WORD thirdOffset;
  WORD fourthOffset;

	hDisplayDC=::GetDC(mhDisplayWindow);
	hMemDC=::CreateCompatibleDC(hDisplayDC);
	hOldBitmap=(HBITMAP)::SelectObject(hMemDC,mhFilm);
	positions(firstOffset,secondOffset,thirdOffset,fourthOffset);
	::BitBlt(hDisplayDC,mWindowPoint.x(),mWindowPoint.y(),Width,Height,
		hMemDC,0,firstOffset*Height,SRCCOPY);
	::BitBlt(hDisplayDC,mWindowPoint.x()+Width,mWindowPoint.y(),Width,Height,
		hMemDC,0,secondOffset*Height,SRCCOPY);
	::BitBlt(hDisplayDC,mWindowPoint.x()+(Width*2),mWindowPoint.y(),Width,Height,
		hMemDC,0,thirdOffset*Height,SRCCOPY);
	::BitBlt(hDisplayDC,mWindowPoint.x()+(Width*3),mWindowPoint.y(),Width,Height,
		hMemDC,0,fourthOffset*Height,SRCCOPY);
	::SelectObject(hMemDC,hOldBitmap);
	::DeleteObject(hMemDC);
	::ReleaseDC(mhDisplayWindow,hDisplayDC);
}

void LedDisplay::positions(WORD &firstOffset,WORD &secondOffset,WORD &thirdOffset,WORD &fourthOffset)const
{
	String numberString;

	if(mHasSpecialChar)
	{
		if(BlankChar==mCurrentSpecialChar)
			firstOffset=secondOffset=thirdOffset=fourthOffset=OffsetBlankChar;
		else
			firstOffset=secondOffset=thirdOffset=fourthOffset=OffsetDashChar;
	}
	else
  {
	  ::sprintf(numberString,"%04d",mCurrentNumber);
	  firstOffset=charPosition(*(numberString));
	  secondOffset=charPosition(*(numberString+1));
		thirdOffset=charPosition(*(numberString+2));
    fourthOffset=charPosition(*(numberString+3));
	}
}