static Bitmap *WICDecodeImageFromStream(IStream *stream)
{
ScopedCom com;
#define HR(hr) if (FAILED(hr)) return NULL;
ScopedComPtr<IWICImagingFactory> pFactory;
if (!pFactory.Create(CLSID_WICImagingFactory)) return NULL;
ScopedComPtr<IWICBitmapDecoder> pDecoder;
HR(pFactory->CreateDecoderFromStream(stream, NULL, WICDecodeMetadataCacheOnDemand,
&pDecoder));
ScopedComPtr<IWICBitmapFrameDecode> srcFrame;
HR(pDecoder->GetFrame(0, &srcFrame));
ScopedComPtr<IWICFormatConverter> pConverter;
HR(pFactory->CreateFormatConverter(&pConverter));
HR(pConverter->Initialize(srcFrame, GUID_WICPixelFormat32bppBGRA,
WICBitmapDitherTypeNone, NULL, 0.f, WICBitmapPaletteTypeCustom));
UINT w, h;
HR(pConverter->GetSize(&w, &h));
double xres, yres;
HR(pConverter->GetResolution(&xres, &yres));
Bitmap bmp(w, h, PixelFormat32bppARGB);
Rect bmpRect(0, 0, w, h);
BitmapData bmpData;
Status ok = bmp.LockBits(&bmpRect, ImageLockModeWrite, PixelFormat32bppARGB, &bmpData);
if (ok != Ok)
return NULL;
HR(pConverter->CopyPixels(NULL, bmpData.Stride, bmpData.Stride * h, (BYTE *)bmpData.Scan0));
bmp.UnlockBits(&bmpData);
bmp.SetResolution((REAL)xres, (REAL)yres);
#undef HR
// hack to avoid the use of ::new (because there won't be a corresponding ::delete)
return bmp.Clone(0, 0, w, h, PixelFormat32bppARGB);
}
WCHAR *ResolveLnk(const WCHAR * path)
{
ScopedMem<OLECHAR> olePath(str::Dup(path));
if (!olePath)
return NULL;
ScopedComPtr<IShellLink> lnk;
if (!lnk.Create(CLSID_ShellLink))
return NULL;
ScopedComQIPtr<IPersistFile> file(lnk);
if (!file)
return NULL;
HRESULT hRes = file->Load(olePath, STGM_READ);
if (FAILED(hRes))
return NULL;
hRes = lnk->Resolve(NULL, SLR_UPDATE);
if (FAILED(hRes))
return NULL;
WCHAR newPath[MAX_PATH];
hRes = lnk->GetPath(newPath, MAX_PATH, NULL, 0);
if (FAILED(hRes))
return NULL;
return str::Dup(newPath);
}
bool CreateShortcut(const WCHAR *shortcutPath, const WCHAR *exePath,
const WCHAR *args, const WCHAR *description, int iconIndex)
{
ScopedCom com;
ScopedComPtr<IShellLink> lnk;
if (!lnk.Create(CLSID_ShellLink))
return false;
ScopedComQIPtr<IPersistFile> file(lnk);
if (!file)
return false;
HRESULT hr = lnk->SetPath(exePath);
if (FAILED(hr))
return false;
lnk->SetWorkingDirectory(ScopedMem<WCHAR>(path::GetDir(exePath)));
// lnk->SetShowCmd(SW_SHOWNORMAL);
// lnk->SetHotkey(0);
lnk->SetIconLocation(exePath, iconIndex);
if (args)
lnk->SetArguments(args);
if (description)
lnk->SetDescription(description);
hr = file->Save(shortcutPath, TRUE);
return SUCCEEDED(hr);
}
UINT GuessTextCodepage(const char *data, size_t len, UINT defVal)
{
// try to guess the codepage
ScopedComPtr<IMultiLanguage2> pMLang;
if (!pMLang.Create(CLSID_CMultiLanguage))
return defVal;
int ilen = (int)min(len, INT_MAX);
int count = 1;
DetectEncodingInfo info = { 0 };
HRESULT hr = pMLang->DetectInputCodepage(MLDETECTCP_NONE, CP_ACP, (char *)data,
&ilen, &info, &count);
if (FAILED(hr) || count != 1)
return defVal;
return info.nCodePage;
}
