Method LoadBitmapAndScale

DevIL/bindings/DotNet/DevIL.NET.cpp:179–267

}

System::Drawing::Bitmap __gc* DevIL::DevIL::LoadBitmapAndScale(System::String __gc* i_szFileName, 
															   int i_iWidth, int i_iHeight, 
															   DevILScaleFilter i_eFilter,
															   DevILScaleKind i_eKind)
{
	if (!s_bInitDone)
	{
		ilInit();
		s_bInitDone = true;
	}
	ilGenImages(1, &s_iImageID);
	ilBindImage(s_iImageID);

	if (0==ilLoadImage(StringAutoMarshal(i_szFileName)))
	{
		return NULL;
	}

	int iW = ilGetInteger(IL_IMAGE_WIDTH);
	int iH = ilGetInteger(IL_IMAGE_HEIGHT);
	bool bResize = true;

	switch(i_eKind)
	{
		case WIDTH_AND_HEIGHT:
			iW = i_iWidth;
			iH = i_iHeight;
			break;
		case WIDTH_ONLY:
			iW = i_iWidth;
			break;
		case HEIGHT_ONLY:
			iH = i_iHeight;
			break;
		case KEEPRATIO_USING_WIDTH:
			iH = int(double(iH) * double(i_iWidth) / double(iW));
			iW = i_iWidth;
			break;
		case KEEPRATIO_USING_HEIGHT:
			iW = int(double(iW) * double(i_iHeight) / double(iH));
			iH = i_iHeight;
			break;
		case DO_NOT_SCALE:
			bResize = false;
			break;
		default:
			break;
	}

	System::Drawing::Bitmap __gc* pBmp = __gc new System::Drawing::Bitmap(iW, iH, System::Drawing::Imaging::PixelFormat::Format32bppArgb);				

	System::Drawing::Rectangle rect; rect.X = 0; rect.Y = 0; rect.Width = iW; rect.Height = iH;

	System::Drawing::Imaging::BitmapData __gc* pBd = pBmp->LockBits(rect, 
		System::Drawing::Imaging::ImageLockMode::WriteOnly,
		System::Drawing::Imaging::PixelFormat::Format32bppArgb);

	void* pScan0 = (void*)(pBd->Scan0);