//-----------------------------------------------------------------------------
// Does: Open a File And Load It Into IPicture (Interface)
// ~~~~ (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)
//
// InPut: sFilePathName - Path And FileName Target To Save
// ~~~~~
//
// OutPut: TRUE If Succeeded...
// ~~~~~~
//-----------------------------------------------------------------------------
BOOL CPicViewer::Load(CString sFilePathName)
//=============================================================================
{
BOOL bResult = FALSE;
CFile PictureFile;
CFileException e;
int nSize = 0;
if(m_IPicture != NULL) FreePictureData(); // Important - Avoid Leaks...
if(PictureFile.Open(sFilePathName, CFile::modeRead | CFile::typeBinary, &e))
{
nSize = PictureFile.GetLength();
BYTE* pBuffer = new BYTE[nSize];
if(PictureFile.Read(pBuffer, nSize) > 0)
{
// 防止图像文件数据有错(目前的问题是无结束符)，导致OleLoadPicture无响应 [6/22/2009 guowenpeng]
if ((pBuffer[nSize - 2] != 0xff)
|| (pBuffer[nSize - 1] != 0xd9)) // 0xffd9: jpeg文件结束标志
{
pBuffer[nSize - 2] = 0xff;
pBuffer[nSize - 1] = 0xd9;
}
if(LoadPictureData(pBuffer, nSize)) bResult = TRUE;
}
PictureFile.Close();
delete [] pBuffer;
}
else // Open Failed...
{
TCHAR szCause[255];
e.GetErrorMessage(szCause, 255, NULL);
TRACE( "%s\n", szCause );
// HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
// MessageBoxEx(hWnd, szCause, ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
bResult = FALSE;
}
m_Weight = nSize; // Update Picture Size Info...
if(m_IPicture != NULL) // Do Not Try To Read From Memory That Is Not Exist...
{
m_IPicture->get_Height(&m_Height);
m_IPicture->get_Width(&m_Width);
// Calculate Its Size On a "Standard" (96 DPI) Device Context
m_Height = MulDiv(m_Height, 96, HIMETRIC_INCH);
m_Width = MulDiv(m_Width, 96, HIMETRIC_INCH);
}
else // Picture Data Is Not a Known Picture Type
{
m_Height = 0;
m_Width = 0;
bResult = FALSE;
}
return(bResult);
}
CPicture::~CPicture()
{
FreePictureData(); // Important - Avoid Leaks...
delete pBitmap;
if (bHaveGDIPlus)
GdiplusShutdown(gdiplusToken);
}
//-----------------------------------------------------------------------------
// Does: Load It Into IPicture (Interface)
// ~~~~ (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)
//
// InPut: Buffer Of Data Source (File / Resource) And Its Size
// ~~~~~
//
// OutPut: TRUE If Succeeded...
// ~~~~~~
//-----------------------------------------------------------------------------
BOOL CPicViewer::Load(BYTE *pBuffer, int nSize)
//=============================================================================
{
BOOL bResult = FALSE;
if(m_IPicture != NULL) FreePictureData(); // Important - Avoid Leaks...
if(LoadPictureData(pBuffer, nSize))
{
bResult = TRUE;
}
m_Weight = nSize; // Update Picture Size Info...
if(m_IPicture != NULL) // Do Not Try To Read From Memory That Is Not Exist...
{
m_IPicture->get_Height(&m_Height);
m_IPicture->get_Width(&m_Width);
// Calculate Its Size On a "Standard" (96 DPI) Device Context
m_Height = MulDiv(m_Height, 96, HIMETRIC_INCH);
m_Width = MulDiv(m_Width, 96, HIMETRIC_INCH);
}
else // Picture Data Is Not a Known Picture Type
{
m_Height = 0;
m_Width = 0;
bResult = FALSE;
}
return(bResult);
}
bool CPicture::Load(tstring sFilePathName)
{
bool bResult = false;
bIsIcon = false;
lpIcons = NULL;
//CFile PictureFile;
//CFileException e;
FreePictureData(); // Important - Avoid Leaks...
// No-op if no file specified
if (sFilePathName.empty())
return true;
// Load & initialize the GDI+ library if available
HMODULE hGdiPlusLib = AtlLoadSystemLibraryUsingFullPath(_T("gdiplus.dll"));
if (hGdiPlusLib && GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL) == Ok)
{
bHaveGDIPlus = true;
}
// Since we loaded the gdiplus.dll only to check if it's available, we
// can safely free the library here again - GdiplusStartup() loaded it too
// and reference counting will make sure that it stays loaded until GdiplusShutdown()
// is called.
FreeLibrary(hGdiPlusLib);
// Attempt to load using GDI+ if available
if (bHaveGDIPlus)
{
pBitmap = new Bitmap(sFilePathName.c_str(), FALSE);
GUID guid;
pBitmap->GetRawFormat(&guid);
if (pBitmap->GetLastStatus() != Ok)
{
delete pBitmap;
pBitmap = NULL;
}
// gdiplus only loads the first icon found in an icon file
// so we have to handle icon files ourselves :(
// Even though gdiplus can load icons, it can't load the new
// icons from Vista - in Vista, the icon format changed slightly.
// But the LoadIcon/LoadImage API still can load those icons,
// at least those dimensions which are also used on pre-Vista
// systems.
// For that reason, we don't rely on gdiplus telling us if
// the image format is "icon" or not, we also check the
// file extension for ".ico".
std::transform(sFilePathName.begin(), sFilePathName.end(), sFilePathName.begin(), ::tolower);
bIsIcon = (guid == ImageFormatIcon) || (wcsstr(sFilePathName.c_str(), L".ico") != NULL) || (wcsstr(sFilePathName.c_str(), L".cur") != NULL);
bIsTiff = (guid == ImageFormatTIFF) || (_tcsstr(sFilePathName.c_str(), _T(".tiff")) != NULL);
m_Name = sFilePathName;
if (bIsIcon)
{
// Icon file, get special treatment...
if (pBitmap)
{
// Cleanup first...
delete (pBitmap);
pBitmap = NULL;
bIsIcon = true;
}
CAutoFile hFile = CreateFile(sFilePathName.c_str(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile)
{
BY_HANDLE_FILE_INFORMATION fileinfo;
if (GetFileInformationByHandle(hFile, &fileinfo))
{
lpIcons = new BYTE[fileinfo.nFileSizeLow];
DWORD readbytes;
if (ReadFile(hFile, lpIcons, fileinfo.nFileSizeLow, &readbytes, NULL))
{
// we have the icon. Now gather the information we need later
if (readbytes >= sizeof(ICONDIR))
{
// we are going to open same file second time so we have to close the file now
hFile.CloseHandle();
LPICONDIR lpIconDir = (LPICONDIR)lpIcons;
if ((lpIconDir->idCount) && ((lpIconDir->idCount * sizeof(ICONDIR)) <= fileinfo.nFileSizeLow))
{
try
{
bResult = false;
nCurrentIcon = 0;
hIcons = new HICON[lpIconDir->idCount];
// check that the pointers point to data that we just loaded
if (((BYTE*)lpIconDir->idEntries > (BYTE*)lpIconDir) &&
(((BYTE*)lpIconDir->idEntries) + (lpIconDir->idCount * sizeof(ICONDIRENTRY)) < ((BYTE*)lpIconDir) + fileinfo.nFileSizeLow))
{
m_Width = lpIconDir->idEntries[0].bWidth;
m_Height = lpIconDir->idEntries[0].bHeight;
bResult = true;
for (int i=0; i<lpIconDir->idCount; ++i)
{
hIcons[i] = (HICON)LoadImage(NULL, sFilePathName.c_str(), IMAGE_ICON,
lpIconDir->idEntries[i].bWidth,
lpIconDir->idEntries[i].bHeight,
LR_LOADFROMFILE);
if (hIcons[i] == NULL)
{
// if the icon couldn't be loaded, the data is most likely corrupt
delete [] lpIcons;
lpIcons = NULL;
bResult = false;
break;
}
}
}
}
catch (...)
{
delete [] lpIcons;
lpIcons = NULL;
bResult = false;
}
}
else
{
delete [] lpIcons;
lpIcons = NULL;
bResult = false;
}
}
else
{
delete [] lpIcons;
lpIcons = NULL;
bResult = false;
}
}
else
{
delete [] lpIcons;
lpIcons = NULL;
}
}
}
}
else if (pBitmap) // Image loaded successfully with GDI+
{
m_Height = pBitmap->GetHeight();
m_Width = pBitmap->GetWidth();
bResult = true;
}
// If still failed to load the file...
if (!bResult)
{
// Attempt to load the FreeImage library as an optional DLL to support additional formats
// NOTE: Currently just loading via FreeImage & using GDI+ for drawing.
// It might be nice to remove this dependency in the future.
HMODULE hFreeImageLib = LoadLibrary(_T("FreeImage.dll"));
// FreeImage DLL functions
typedef const char* (__stdcall *FreeImage_GetVersion_t)(void);
typedef int (__stdcall *FreeImage_GetFileType_t)(const TCHAR *filename, int size);
typedef int (__stdcall *FreeImage_GetFIFFromFilename_t)(const TCHAR *filename);
typedef void* (__stdcall *FreeImage_Load_t)(int format, const TCHAR *filename, int flags);
typedef void (__stdcall *FreeImage_Unload_t)(void* dib);
typedef int (__stdcall *FreeImage_GetColorType_t)(void* dib);
typedef unsigned (__stdcall *FreeImage_GetWidth_t)(void* dib);
typedef unsigned (__stdcall *FreeImage_GetHeight_t)(void* dib);
typedef void (__stdcall *FreeImage_ConvertToRawBits_t)(BYTE *bits, void *dib, int pitch, unsigned bpp, unsigned red_mask, unsigned green_mask, unsigned blue_mask, BOOL topdown);
//FreeImage_GetVersion_t FreeImage_GetVersion = NULL;
FreeImage_GetFileType_t FreeImage_GetFileType = NULL;
FreeImage_GetFIFFromFilename_t FreeImage_GetFIFFromFilename = NULL;
FreeImage_Load_t FreeImage_Load = NULL;
FreeImage_Unload_t FreeImage_Unload = NULL;
//FreeImage_GetColorType_t FreeImage_GetColorType = NULL;
FreeImage_GetWidth_t FreeImage_GetWidth = NULL;
FreeImage_GetHeight_t FreeImage_GetHeight = NULL;
FreeImage_ConvertToRawBits_t FreeImage_ConvertToRawBits = NULL;
if (hFreeImageLib)
{
bool exportsValid = true;
//FreeImage_GetVersion = (FreeImage_GetVersion_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetVersion@0", valid);
FreeImage_GetWidth = (FreeImage_GetWidth_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetWidth@4", exportsValid);
FreeImage_GetHeight = (FreeImage_GetHeight_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetHeight@4", exportsValid);
FreeImage_Unload = (FreeImage_Unload_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_Unload@4", exportsValid);
FreeImage_ConvertToRawBits = (FreeImage_ConvertToRawBits_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_ConvertToRawBits@32", exportsValid);
#ifdef UNICODE
FreeImage_GetFileType = (FreeImage_GetFileType_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetFileTypeU@8", exportsValid);
FreeImage_GetFIFFromFilename = (FreeImage_GetFIFFromFilename_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetFIFFromFilenameU@4", exportsValid);
FreeImage_Load = (FreeImage_Load_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_LoadU@12", exportsValid);
#else
FreeImage_GetFileType = (FreeImage_GetFileType_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetFileType@8", exportsValid);
FreeImage_GetFIFFromFilename = (FreeImage_GetFIFFromFilename_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_GetFIFFromFilename@4", exportsValid);
FreeImage_Load = (FreeImage_Load_t)s_GetProcAddressEx(hFreeImageLib, "_FreeImage_Load@12", exportsValid);
#endif
//const char* version = FreeImage_GetVersion();
// Check the DLL is using compatible exports
if (exportsValid)
{
// Derive file type from file header.
int fileType = FreeImage_GetFileType(sFilePathName.c_str(), 0);
if (fileType < 0)
{
// No file header available, attempt to parse file name for extension.
fileType = FreeImage_GetFIFFromFilename(sFilePathName.c_str());
}
// If we have a valid file type
if (fileType >= 0)
{
void* dib = FreeImage_Load(fileType, sFilePathName.c_str(), 0);
if (dib)
{
unsigned width = FreeImage_GetWidth(dib);
unsigned height = FreeImage_GetHeight(dib);
// Create a GDI+ bitmap to load into...
pBitmap = new Bitmap(width, height, PixelFormat32bppARGB);
if (pBitmap && pBitmap->GetLastStatus() == Ok)
{
// Write & convert the loaded data into the GDI+ Bitmap
Rect rect(0, 0, width, height);
BitmapData bitmapData;
if (pBitmap->LockBits(&rect, ImageLockModeWrite, PixelFormat32bppARGB, &bitmapData) == Ok)
{
FreeImage_ConvertToRawBits((BYTE*)bitmapData.Scan0, dib, bitmapData.Stride, 32, 0xff << RED_SHIFT, 0xff << GREEN_SHIFT, 0xff << BLUE_SHIFT, FALSE);
pBitmap->UnlockBits(&bitmapData);
m_Width = width;
m_Height = height;
bResult = true;
}
else // Failed to lock the destination Bitmap
{
delete pBitmap;
pBitmap = NULL;
}
}
else // Bitmap allocation failed
{
delete pBitmap;
pBitmap = NULL;
}
FreeImage_Unload(dib);
dib = NULL;
}
}
}
FreeLibrary(hFreeImageLib);
hFreeImageLib = NULL;
}
}
}
//-----------------------------------------------------------------------------
// Does: Open a Resource And Load It Into IPicture (Interface)
// ~~~~ (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)
//
// Note: When Adding a Bitmap Resource It Would Automatically Show On "Bitmap"
// ~~~~ This NOT Good Coz We Need To Load It From a Custom Resource "BMP"
// To Add a Custom Rresource: Import Resource -> Open As -> Custom
// (Both .BMP And .DIB Should Be Found Under "BMP")
//
// InPut: ResourceName - As a UINT Defined (Example: IDR_PICTURE_RESOURCE)
// ~~~~~ ResourceType - Type Name (Example: "JPG")
//
// OutPut: TRUE If Succeeded...
// ~~~~~~
//-----------------------------------------------------------------------------
BOOL CPicViewer::Load(UINT ResourceName, LPCSTR ResourceType)
//=============================================================================
{
BOOL bResult = FALSE;
HGLOBAL hGlobal = NULL;
HRSRC hSource = NULL;
LPVOID lpVoid = NULL;
int nSize = 0;
if(m_IPicture != NULL) FreePictureData(); // Important - Avoid Leaks...
hSource = FindResource(AfxGetResourceHandle(), MAKEINTRESOURCE(ResourceName), ResourceType);
if(hSource == NULL)
{
TRACE( "FindResource() Failed\n" );
// HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
// MessageBoxEx(hWnd, "FindResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
return(FALSE);
}
hGlobal = LoadResource(AfxGetResourceHandle(), hSource);
if(hGlobal == NULL)
{
TRACE( "LoadResource() Failed\n" );
// HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
// MessageBoxEx(hWnd, "LoadResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
return(FALSE);
}
lpVoid = LockResource(hGlobal);
if(lpVoid == NULL)
{
TRACE( "LockResource() Failed\n" );
// HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
// MessageBoxEx(hWnd, "LockResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
return(FALSE);
}
nSize = (UINT)SizeofResource(AfxGetResourceHandle(), hSource);
if(LoadPictureData((BYTE*)hGlobal, nSize)) bResult = TRUE;
UnlockResource(hGlobal); // 16Bit Windows Needs This
FreeResource(hGlobal); // 16Bit Windows Needs This (32Bit - Automatic Release)
m_Weight = nSize; // Update Picture Size Info...
if(m_IPicture != NULL) // Do Not Try To Read From Memory That Is Not Exist...
{
m_IPicture->get_Height(&m_Height);
m_IPicture->get_Width(&m_Width);
// Calculate Its Size On a "Standard" (96 DPI) Device Context
m_Height = MulDiv(m_Height, 96, HIMETRIC_INCH);
m_Width = MulDiv(m_Width, 96, HIMETRIC_INCH);
}
else // Picture Data Is Not a Known Picture Type
{
m_Height = 0;
m_Width = 0;
bResult = FALSE;
}
return(bResult);
}
//-----------------------------------------------------------------------------
// Does: Destructor - Free Data And Information From The CPicture Object
// ~~~~
//
//-----------------------------------------------------------------------------
CPicViewer::~CPicViewer()
//=============================================================================
{
if(m_IPicture != NULL) FreePictureData(); // Important - Avoid Leaks...
}
