//BitMapObject.cpp
#include "BitMapObject.hpp"

BitMapObject::BitMapObject()
{
	hdcMemory=NULL;
	hbmNewBitMap=NULL;
	hbmOldBitMap=NULL;
	iWidth=0;
	iHeight=0;
}

BitMapObject::~BitMapObject()
{
	//if the hdcMemory hasn't been destroyed, do so
	if(hdcMemory)
		Destroy();
}

void BitMapObject::Load(HDC hdcCompatible, LPCTSTR lpszFilename)
{
	//if hdcMemory isn't null, make it so captain!
	if(hdcMemory)
		Destroy();

	//create memory dc.
	hdcMemory=CreateCompatibleDC(hdcCompatible);
	//load the bitmap
	hbmNewBitMap=(HBITMAP)LoadImage(NULL,lpszFilename,IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
	//shove the image into the dc
	hbmOldBitMap=(HBITMAP)SelectObject(hdcMemory,hbmNewBitMap);
	//grab the bitmap's properties
	BITMAP bmp;
	GetObject(hbmNewBitMap,sizeof(BITMAP),(LPVOID)&bmp);
	//grab the width & height
	iWidth=bmp.bmWidth;
	iHeight=bmp.bmHeight;
}

void BitMapObject::Create(HDC hdcCompatible, int width, int height)
{
	//if hdcMemory isn't null, blow it up!
	if(hdcMemory)
		Destroy();

	//create the memory dc.
	hdcMemory=CreateCompatibleDC(hdcCompatible);
	//create the bitmap
	hbmNewBitMap=CreateCompatibleBitmap(hdcCompatible, width, height);
	//shove the image into the dc
	hbmOldBitMap=(HBITMAP)SelectObject(hdcMemory, hbmNewBitMap);
	//change the width and height.
	iWidth=width;
	iHeight=height;
}
          


void BitMapObject::Destroy()
{
	//restore old bitmap.
	SelectObject(hdcMemory, hbmOldBitMap);
	//delete new bitmap.
	DeleteObject(hbmNewBitMap);
	//delete device context.
	DeleteDC(hdcMemory);
	//set members to 0/NULL
	hdcMemory=NULL;
	hbmNewBitMap=NULL;
	hbmOldBitMap=NULL;
	iWidth=0;
	iHeight=0;
}

BitMapObject::operator HDC()
{
	//return hdcMemory.
	return(hdcMemory);
}

int BitMapObject::GetWidth()
{
	//return width
	return(iWidth);
}

int BitMapObject::GetHeight()
{
	//return height
	return(iHeight);
}