windows-nt/Source/XPSP1/NT/shell/ext/shimgvw/tasks.cpp

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2020-09-26 03:20:57 -05:00
#include "precomp.h"
#include "tasks.h"
#include "prevwnd.h"
void DeleteBuffer(Buffer * pBuf)
{
if (pBuf)
{
if (pBuf->hbmOld)
SelectObject(pBuf->hdc, pBuf->hbmOld);
if (pBuf->hPalOld)
SelectPalette(pBuf->hdc, pBuf->hPalOld, FALSE);
if (pBuf->hbm)
DeleteObject(pBuf->hbm);
if (pBuf->hPal)
DeleteObject(pBuf->hPal);
if (pBuf->hdc)
DeleteDC(pBuf->hdc);
delete pBuf;
}
}
////////////////////////////////////////////////////////////////////////////
//
// CDecodeTask
//
////////////////////////////////////////////////////////////////////////////
CDecodeTask::CDecodeTask() : CRunnableTask(RTF_DEFAULT)
{
InitializeCriticalSection(&_cs);
};
CDecodeTask::~CDecodeTask()
{
ATOMICRELEASE(_pstrm);
ATOMICRELEASE(_pfactory);
if (_pszFilename)
LocalFree(_pszFilename);
ATOMICRELEASE(_pSID);
DeleteCriticalSection(&_cs);
if (_ppi)
delete [] _ppi;
}
HRESULT CDecodeTask::Create(IStream * pstrm, LPCWSTR pszFilename, UINT iItem, IShellImageDataFactory * pFactory, HWND hwnd, IRunnableTask ** ppTask)
{
*ppTask = NULL;
CDecodeTask * pTask = new CDecodeTask();
if (!pTask)
return E_OUTOFMEMORY;
HRESULT hr = pTask->_Initialize(pstrm, pszFilename, iItem, pFactory, hwnd);
if (SUCCEEDED(hr))
{
*ppTask = (IRunnableTask*)pTask;
}
else
{
pTask->Release();
}
return hr;
}
HRESULT CDecodeTask::_Initialize(IStream *pstrm, LPCWSTR pszFilename, UINT iItem, IShellImageDataFactory *pFactory, HWND hwnd)
{
if (pstrm)
{
STATSTG stat;
if (SUCCEEDED(pstrm->Stat(&stat, 0)))
{
_pszFilename = StrDup(stat.pwcsName);
_fIsReadOnly = !(stat.grfMode & STGM_WRITE);
CoTaskMemFree(stat.pwcsName);
}
_pstrm = pstrm;
_pstrm->AddRef();
}
else
{
_pszFilename = StrDup(pszFilename);
if (!_pszFilename)
return E_OUTOFMEMORY;
}
if (!_pstrm && _pszFilename)
{
SHGetFileInfo(_pszFilename, 0, &_sfi, sizeof(_sfi), SHGFI_DISPLAYNAME | SHGFI_USEFILEATTRIBUTES);
}
else
{
ZeroMemory(&_sfi, sizeof(_sfi));
}
_pfactory = pFactory;
_pfactory->AddRef();
_hwndNotify = hwnd;
_iItem = iItem;
return S_OK;
}
HRESULT CDecodeTask::RunInitRT()
{
HRESULT hr;
EnterCriticalSection(&_cs);
if (_pstrm)
{
hr = _pfactory->CreateImageFromStream(_pstrm, &_pSID);
}
else
{
hr = _pfactory->CreateImageFromFile(_pszFilename, &_pSID);
_fIsReadOnly = (GetFileAttributes(_pszFilename) & FILE_ATTRIBUTE_READONLY);
}
if (SUCCEEDED(hr))
{
hr = _pSID->Decode(SHIMGDEC_LOADFULL,0,0);
if (SUCCEEDED(hr))
{
_pSID->GetPageCount(&_cImages);
_ppi = new PageInfo[_cImages];
if (_ppi)
{
_iCurrent = 0;
_fAnimated = (S_OK == _pSID->IsAnimated());
_fEditable = (S_OK == _pSID->IsEditable());
PixelFormat pf;
_pSID->GetPixelFormat(&pf);
_fExtendedPF = IsExtendedPixelFormat(pf);
_pSID->GetRawDataFormat(&_guidFormat);
for (ULONG i = 0; i < _cImages; i++)
{
_pSID->SelectPage(i); // this works for animated and multipage
_pSID->GetSize(&_ppi[i].szImage);
_pSID->GetResolution(&_ppi[i].xDPI, &_ppi[i].yDPI);
if (_fAnimated)
_pSID->GetDelay(&_ppi[i].dwDelay);
}
}
else
hr = E_OUTOFMEMORY;
}
if (FAILED(hr))
{
ATOMICRELEASE(_pSID);
}
}
LeaveCriticalSection(&_cs);
AddRef();
_hr = hr;
if (!PostMessage(_hwndNotify, IV_SETIMAGEDATA, (WPARAM)this, NULL))
{
Release();
}
return S_OK;
}
BOOL CDecodeTask::GetSize(SIZE * psz)
{
if (!_ppi)
return FALSE;
*psz = _ppi[_iCurrent].szImage;
return TRUE;
}
BOOL CDecodeTask::GetResolution(ULONG * px, ULONG * py)
{
if (!_ppi)
return FALSE;
*px = _ppi[_iCurrent].xDPI;
*py = _ppi[_iCurrent].yDPI;
return TRUE;
}
DWORD CDecodeTask::GetDelay()
{
if (!_ppi)
return 0;
return _ppi[_iCurrent].dwDelay;
}
BOOL CDecodeTask::NextPage()
{
if (_iCurrent >= _cImages-1)
return FALSE;
_iCurrent++;
return TRUE;
}
BOOL CDecodeTask::PrevPage()
{
if (_iCurrent == 0)
return FALSE;
_iCurrent--;
return TRUE;
}
BOOL CDecodeTask::NextFrame()
{
EnterCriticalSection(&_cs);
HRESULT hr = _pSID->NextFrame();
LeaveCriticalSection(&_cs);
if (S_OK==hr)
{
_iCurrent = (_iCurrent+1) % _cImages;
}
return (S_OK == hr);
}
BOOL CDecodeTask::SelectPage(ULONG nPage)
{
if (nPage >= _cImages)
return FALSE;
_iCurrent = nPage;
return TRUE;
}
BOOL CDecodeTask::ChangePage(CAnnotationSet& Annotations)
{
BOOL bResult = FALSE;
EnterCriticalSection(&_cs);
HRESULT hr = _pSID->SelectPage(_iCurrent);
if (SUCCEEDED(hr))
{
// If we are moving onto a page that was previously rotated
// but not saved then our cached size and resolution will be wrong
_pSID->GetSize(&_ppi[_iCurrent].szImage);
_pSID->GetResolution(&_ppi[_iCurrent].xDPI, &_ppi[_iCurrent].yDPI);
Annotations.SetImageData(_pSID);
bResult = TRUE;
}
LeaveCriticalSection(&_cs);
return bResult;
}
HRESULT CDecodeTask::Rotate(DWORD dwAngle)
{
HRESULT hr;
EnterCriticalSection(&_cs);
hr = _pSID->Rotate(dwAngle);
if (SUCCEEDED(hr))
{
ULONG dwTmp = _ppi[_iCurrent].szImage.cx;
_ppi[_iCurrent].szImage.cx = _ppi[_iCurrent].szImage.cy;
_ppi[_iCurrent].szImage.cy = dwTmp;
if (dwAngle == 90 || dwAngle == 270)
{
dwTmp = _ppi[_iCurrent].xDPI;
_ppi[_iCurrent].xDPI =_ppi[_iCurrent].yDPI;
_ppi[_iCurrent].yDPI = dwTmp;
}
}
LeaveCriticalSection(&_cs);
return hr;
}
HRESULT CDecodeTask::Lock(IShellImageData ** ppSID)
{
if (_pSID)
{
EnterCriticalSection(&_cs);
*ppSID = _pSID;
return S_OK;
}
*ppSID = NULL;
return E_FAIL;
}
HRESULT CDecodeTask::Unlock()
{
LeaveCriticalSection(&_cs);
return S_OK;
}
BOOL CDecodeTask::DisplayName(LPTSTR psz, UINT cch)
{
// TODO: Just call the _pSID->DisplayName
if (_sfi.szDisplayName[0])
{
StrCpyN(psz, _sfi.szDisplayName, cch);
return TRUE;
}
return FALSE;
}
////////////////////////////////////////////////////////////////////////////
//
// CDrawTask
//
////////////////////////////////////////////////////////////////////////////
CDrawTask::CDrawTask() : CRunnableTask(RTF_SUPPORTKILLSUSPEND)
{
}
CDrawTask::~CDrawTask()
{
if (_pImgData)
_pImgData->Release();
// DeleteBuffer is going to check for NULL anyway
DeleteBuffer(_pBuf);
}
HRESULT CDrawTask::QueryInterface(REFIID riid, LPVOID * ppvObj)
{
if (riid == IID_IShellImageDataAbort)
{
*ppvObj = static_cast<IShellImageDataAbort*>(this);
AddRef();
return S_OK;
}
return CRunnableTask::QueryInterface(riid, ppvObj);
}
HRESULT CDrawTask::Create(CDecodeTask * pImageData, COLORREF clr, RECT & rcSrc, RECT & rcDest, HWND hwnd, ULONG uMsg, IRunnableTask ** ppTask)
{
*ppTask = NULL;
CDrawTask * pTask = new CDrawTask();
if (!pTask)
return E_OUTOFMEMORY;
HRESULT hr = pTask->_Initialize(pImageData, clr, rcSrc, rcDest, hwnd, uMsg);
if (SUCCEEDED(hr))
{
*ppTask = (IRunnableTask*)pTask;
}
else
{
pTask->Release();
}
return hr;
}
HRESULT CDrawTask::_Initialize(CDecodeTask * pImageData, COLORREF clr, RECT & rcSrc, RECT & rcDest, HWND hwnd, ULONG uMsg)
{
_pImgData = pImageData;
_pImgData->AddRef();
_dwPage = _pImgData->_iCurrent;
_clrBkgnd = clr;
_rcSrc = rcSrc;
_hwndNotify = hwnd;
_uMsgNotify = uMsg;
_pBuf = new Buffer;
if (!_pBuf)
return E_OUTOFMEMORY;
_pBuf->rc = rcDest;
_pBuf->hPal = NULL;
return S_OK;
}
typedef RGBQUAD RGBQUAD8[256];
HBITMAP _CreateBitmap(HDC hdcWnd, Buffer *pBuf, SIZE *pSize)
{
int bpp = GetDeviceCaps(hdcWnd, BITSPIXEL);
HBITMAP hbm = NULL;
if (8==bpp)
{
PVOID pvBits = NULL;
struct
{
BITMAPINFOHEADER bmih;
RGBQUAD8 rgbquad8;
} bmi;
bmi.bmih.biSize = sizeof(bmi.bmih);
bmi.bmih.biWidth = (int)pSize->cx;
bmi.bmih.biHeight = (int)pSize->cy;
bmi.bmih.biPlanes = 1;
bmi.bmih.biBitCount = 8;
bmi.bmih.biCompression = BI_RGB;
bmi.bmih.biSizeImage = 0;
bmi.bmih.biXPelsPerMeter = 0;
bmi.bmih.biYPelsPerMeter = 0;
bmi.bmih.biClrUsed = 0; // only used for <= 16bpp
bmi.bmih.biClrImportant = 0;
//
// Use the halftone palette
//
pBuf->hPal = DllExports::GdipCreateHalftonePalette();
pBuf->hPalOld = SelectPalette(pBuf->hdc, pBuf->hPal, FALSE);
BYTE aj[sizeof(PALETTEENTRY) * 256];
LPPALETTEENTRY lppe = (LPPALETTEENTRY) aj;
RGBQUAD *prgb = (RGBQUAD *) &bmi.rgbquad8;
if (GetPaletteEntries(pBuf->hPal, 0, 256, lppe))
{
UINT i;
for (i = 0; i < 256; i++)
{
prgb[i].rgbRed = lppe[i].peRed;
prgb[i].rgbGreen = lppe[i].peGreen;
prgb[i].rgbBlue = lppe[i].peBlue;
prgb[i].rgbReserved = 0;
}
}
hbm = CreateDIBSection(hdcWnd,(BITMAPINFO*)&bmi,DIB_RGB_COLORS,&pvBits,NULL,0);
}
else
{
hbm = CreateCompatibleBitmap(hdcWnd,pSize->cx, pSize->cy);
}
return hbm;
}
HRESULT CDrawTask::InternalResumeRT()
{
HRESULT hr = E_FAIL;
HDC hdcScreen = GetDC(NULL);
if (!_pBuf->hdc)
{
_pBuf->hdc = CreateCompatibleDC(hdcScreen);
}
if (_pBuf->hdc)
{
SIZE sz = {RECTWIDTH(_pBuf->rc), RECTHEIGHT(_pBuf->rc)};
// If we were suspended and resumed, we will already have
// a GDI bitmap from last time so don't make another one.
if (!_pBuf->hbm)
{
BITMAP bm = {0};
_pBuf->hbm = _CreateBitmap(hdcScreen, _pBuf, &sz);
_pBuf->hbmOld = (HBITMAP)SelectObject(_pBuf->hdc, _pBuf->hbm);
}
if (_pBuf->hbm)
{
RECT rc = {0,0,sz.cx, sz.cy};
SetBkColor(_pBuf->hdc, _clrBkgnd);
ExtTextOut(_pBuf->hdc, 0, 0, ETO_OPAQUE, &rc, NULL, 0, NULL);
IShellImageData * pSID;
if (SUCCEEDED(_pImgData->Lock(&pSID)))
{
pSID->SelectPage(_dwPage);
IShellImageDataAbort *pAbortPrev = NULL;
pSID->RegisterAbort(this, &pAbortPrev);
hr = pSID->Draw(_pBuf->hdc, &rc, &_rcSrc);
pSID->RegisterAbort(pAbortPrev, NULL);
_pImgData->Unlock();
}
}
}
if (hdcScreen)
{
ReleaseDC(NULL, hdcScreen);
}
if (QueryAbort() == S_FALSE)
{
// We were cancelled or suspended, so don't notify our parent
// because we have nothing to show for our efforts.
hr = (_lState == IRTIR_TASK_SUSPENDED) ? E_PENDING : E_FAIL;
}
else
{
// Ran to completion - clean up and notify main thread
UINT iIndex = _pImgData->_iItem;
ATOMICRELEASE(_pImgData);
if (FAILED(hr))
{
DeleteBuffer(_pBuf);
_pBuf = NULL;
}
if (PostMessage(_hwndNotify, _uMsgNotify, (WPARAM)_pBuf, (LPARAM)IntToPtr(iIndex)))
{
_pBuf = NULL;
}
hr = S_OK;
}
return hr;
}
HRESULT CDrawTask::QueryAbort()
{
// BUGBUG not rady for prime tome - need to return E_PENDING
// if state is SUSPENDED
if (WaitForSingleObject(_hDone, 0) == WAIT_OBJECT_0)
{
return S_FALSE; // Abort
}
return S_OK;
}
int LoadSPString(int idStr, LPTSTR pszString, int cch)
{
int iRet = 0;
if (pszString && cch > 0)
{
*pszString = 0;
}
HINSTANCE hinst = LoadLibraryEx(TEXT("xpsp1res.dll"), NULL, LOAD_LIBRARY_AS_DATAFILE);
if (hinst)
{
iRet = LoadString(hinst, idStr, pszString, cch);
FreeLibrary(hinst);
}
// Change this if the XP string changes are approved
return 0;
}