mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
Bug 622480: Part 2 - Run moz-icon OS integration on Windows async. r=joe
Here we remove most of the functionality of the channel and place it in the input stream. By using a blocking input stream, we can guarantee that Necko will kick our input stream to a background thread. We then do all of our shell calls on first read from the input stream, guaranteeing that they happen off the main thread.
This commit is contained in:
Kyle Huey
parent
d534311b09
commit
cc0159a85a
@ -59,6 +59,9 @@
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#include "nsIMIMEService.h"
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#include "nsCExternalHandlerService.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsAutoPtr.h"
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#include "nsThreadUtils.h"
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#include "nsProxyRelease.h"
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#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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#ifdef _WIN32_WINNT
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@ -90,6 +93,7 @@ struct ICONENTRY {
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PRUint32 ieFileOffset;
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};
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// static helpers
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#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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typedef HRESULT (WINAPI*SHGetStockIconInfoPtr) (SHSTOCKICONID siid, UINT uFlags, SHSTOCKICONINFO *psii);
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@ -104,6 +108,489 @@ static SHSTOCKICONID GetStockIconIDForName(const nsACString &aStockName)
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}
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#endif
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// Given a BITMAPINFOHEADER, returns the size of the color table.
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static int GetColorTableSize(BITMAPINFOHEADER* aHeader)
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{
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int colorTableSize = -1;
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// http://msdn.microsoft.com/en-us/library/dd183376%28v=VS.85%29.aspx
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switch (aHeader->biBitCount) {
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case 0:
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colorTableSize = 0;
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break;
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case 1:
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colorTableSize = 2 * sizeof(RGBQUAD);
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break;
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case 4:
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case 8:
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{
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// The maximum possible size for the color table is 2**bpp, so check for
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// that and fail if we're not in those bounds
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unsigned int maxEntries = 1 << (aHeader->biBitCount);
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if (aHeader->biClrUsed > 0 && aHeader->biClrUsed <= maxEntries)
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colorTableSize = aHeader->biClrUsed * sizeof(RGBQUAD);
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else if (aHeader->biClrUsed == 0)
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colorTableSize = maxEntries * sizeof(RGBQUAD);
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break;
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}
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case 16:
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case 32:
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if (aHeader->biCompression == BI_RGB)
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colorTableSize = 0;
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else if (aHeader->biCompression == BI_BITFIELDS)
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colorTableSize = 3 * sizeof(DWORD);
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break;
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case 24:
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colorTableSize = 0;
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break;
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}
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if (colorTableSize < 0)
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NS_WARNING("Unable to figure out the color table size for this bitmap");
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return colorTableSize;
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}
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// Given a header and a size, creates a freshly allocated BITMAPINFO structure.
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// It is the caller's responsibility to null-check and delete the structure.
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static BITMAPINFO* CreateBitmapInfo(BITMAPINFOHEADER* aHeader,
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size_t aColorTableSize)
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{
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BITMAPINFO* bmi = (BITMAPINFO*) ::operator new(sizeof(BITMAPINFOHEADER) +
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aColorTableSize,
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mozilla::fallible_t());
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if (bmi) {
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memcpy(bmi, aHeader, sizeof(BITMAPINFOHEADER));
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memset(bmi->bmiColors, 0, aColorTableSize);
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}
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return bmi;
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}
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static DWORD GetSpecialFolderIcon(nsIFile* aFile, int aFolder, SHFILEINFOW* aSFI, UINT aInfoFlags)
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{
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NS_ABORT_IF_FALSE(!NS_IsMainThread(), "Shouldn't call shell functions on the main thread!");
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DWORD shellResult = 0;
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if (!aFile)
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return shellResult;
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PRUnichar fileNativePath[MAX_PATH];
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nsAutoString fileNativePathStr;
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aFile->GetPath(fileNativePathStr);
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::GetShortPathNameW(fileNativePathStr.get(), fileNativePath, NS_ARRAY_LENGTH(fileNativePath));
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LPITEMIDLIST idList;
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HRESULT hr = ::SHGetSpecialFolderLocation(NULL, aFolder, &idList);
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if (SUCCEEDED(hr)) {
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PRUnichar specialNativePath[MAX_PATH];
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::SHGetPathFromIDListW(idList, specialNativePath);
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::GetShortPathNameW(specialNativePath, specialNativePath, NS_ARRAY_LENGTH(specialNativePath));
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if (!wcsicmp(fileNativePath, specialNativePath)) {
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aInfoFlags |= (SHGFI_PIDL | SHGFI_SYSICONINDEX);
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shellResult = ::SHGetFileInfoW((LPCWSTR)(LPCITEMIDLIST)idList, 0, aSFI,
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sizeof(*aSFI), aInfoFlags);
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IMalloc* pMalloc;
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hr = ::SHGetMalloc(&pMalloc);
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if (SUCCEEDED(hr)) {
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pMalloc->Free(idList);
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pMalloc->Release();
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}
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}
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}
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return shellResult;
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}
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static UINT GetSizeInfoFlag(PRUint32 aDesiredImageSize)
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{
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UINT infoFlag;
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if (aDesiredImageSize > 16)
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infoFlag = SHGFI_SHELLICONSIZE;
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else
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infoFlag = SHGFI_SMALLICON;
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return infoFlag;
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}
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nsresult GetHIconFromFile(nsIMozIconURI* aIconURI, nsIFile* aFile, HICON *hIcon)
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{
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NS_ABORT_IF_FALSE(!NS_IsMainThread(), "Shouldn't call shell functions on the main thread!");
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nsresult rv;
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nsXPIDLCString contentType;
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aIconURI->GetContentType(contentType);
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nsCString fileExt;
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aIconURI->GetFileExtension(fileExt);
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PRUint32 desiredImageSize;
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aIconURI->GetImageSize(&desiredImageSize);
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// if the file exists, we are going to use it's real attributes...otherwise we only want to use it for it's extension...
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SHFILEINFOW sfi;
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UINT infoFlags = SHGFI_ICON;
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PRBool fileExists = PR_FALSE;
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nsAutoString filePath;
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CopyASCIItoUTF16(fileExt, filePath);
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if (aFile)
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{
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rv = aFile->Normalize();
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NS_ENSURE_SUCCESS(rv, rv);
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aFile->GetPath(filePath);
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if (filePath.Length() < 2 || filePath[1] != ':')
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return NS_ERROR_MALFORMED_URI; // UNC
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if (filePath.Last() == ':')
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filePath.Append('\\');
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else {
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aFile->Exists(&fileExists);
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if (!fileExists)
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aFile->GetLeafName(filePath);
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}
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}
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if (!fileExists)
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infoFlags |= SHGFI_USEFILEATTRIBUTES;
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infoFlags |= GetSizeInfoFlag(desiredImageSize);
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// if we have a content type... then use it! but for existing files, we want
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// to show their real icon.
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if (!fileExists && !contentType.IsEmpty())
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{
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nsCOMPtr<nsIMIMEService> mimeService (do_GetService(NS_MIMESERVICE_CONTRACTID, &rv));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCAutoString defFileExt;
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mimeService->GetPrimaryExtension(contentType, fileExt, defFileExt);
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// If the mime service does not know about this mime type, we show
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// the generic icon.
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// In any case, we need to insert a '.' before the extension.
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filePath = NS_LITERAL_STRING(".") + NS_ConvertUTF8toUTF16(defFileExt);
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}
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// Is this the "Desktop" folder?
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DWORD shellResult = GetSpecialFolderIcon(aFile, CSIDL_DESKTOP, &sfi, infoFlags);
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if (!shellResult) {
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// Is this the "My Documents" folder?
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shellResult = GetSpecialFolderIcon(aFile, CSIDL_PERSONAL, &sfi, infoFlags);
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}
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// There are other "Special Folders" and Namespace entities that we are not
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// fetching icons for, see:
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// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/enums/csidl.asp
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// If we ever need to get them, code to do so would be inserted here.
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// Not a special folder, or something else failed above.
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if (!shellResult)
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shellResult = ::SHGetFileInfoW(filePath.get(),
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FILE_ATTRIBUTE_ARCHIVE, &sfi, sizeof(sfi), infoFlags);
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if (shellResult && sfi.hIcon)
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*hIcon = sfi.hIcon;
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else
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rv = NS_ERROR_NOT_AVAILABLE;
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return rv;
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}
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#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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nsresult GetStockHIcon(nsIMozIconURI *aIconURI, HICON *hIcon)
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{
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NS_ABORT_IF_FALSE(!NS_IsMainThread(), "Shouldn't call shell functions on the main thread!");
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nsresult rv = NS_OK;
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// We can only do this on Vista or above
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HMODULE hShellDLL = ::LoadLibraryW(L"shell32.dll");
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SHGetStockIconInfoPtr pSHGetStockIconInfo =
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(SHGetStockIconInfoPtr) ::GetProcAddress(hShellDLL, "SHGetStockIconInfo");
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if (pSHGetStockIconInfo)
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{
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PRUint32 desiredImageSize;
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aIconURI->GetImageSize(&desiredImageSize);
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nsCAutoString stockIcon;
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aIconURI->GetStockIcon(stockIcon);
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SHSTOCKICONID stockIconID = GetStockIconIDForName(stockIcon);
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if (stockIconID == SIID_INVALID)
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return NS_ERROR_NOT_AVAILABLE;
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UINT infoFlags = SHGSI_ICON;
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infoFlags |= GetSizeInfoFlag(desiredImageSize);
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SHSTOCKICONINFO sii = {0};
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sii.cbSize = sizeof(sii);
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HRESULT hr = pSHGetStockIconInfo(stockIconID, infoFlags, &sii);
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if (SUCCEEDED(hr))
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*hIcon = sii.hIcon;
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else
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rv = NS_ERROR_FAILURE;
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}
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else
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{
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rv = NS_ERROR_NOT_AVAILABLE;
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}
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if (hShellDLL)
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::FreeLibrary(hShellDLL);
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return rv;
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}
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#endif
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class nsIconInputStream : public nsIInputStream
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{
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public:
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nsIconInputStream(nsIURI* aURI)
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: mStatus(NS_OK)
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, mInited(PR_FALSE)
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, mSize(0)
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, mAvailable(0)
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{
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nsresult rv;
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NS_ABORT_IF_FALSE(NS_IsMainThread(), "Wrong thread");
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// Clone the URI in case the main thread decides to modify it
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nsCOMPtr<nsIURI> uri;
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aURI->Clone(getter_AddRefs(uri));
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mIconURI = do_QueryInterface(uri, &rv);
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if (NS_FAILED(rv) || !mIconURI) return;
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// We need to get the file on the main thread too since we can't QI
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// the URI on the transport thread
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nsCOMPtr<nsIURL> url;
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rv = mIconURI->GetIconURL(getter_AddRefs(url));
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if (NS_FAILED(rv) || !url) return;
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nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(url, &rv);
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if (NS_FAILED(rv) || !fileURL) return;
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nsCOMPtr<nsIFile> file;
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rv = fileURL->GetFile(getter_AddRefs(file));
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if (NS_FAILED(rv) || !file) return;
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rv = file->Clone(getter_AddRefs(mFile));
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if (NS_FAILED(rv) || !mFile) return;
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}
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~nsIconInputStream()
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{
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// Ensure that we Release the URI on the main thread
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nsCOMPtr<nsIThread> mainThread(do_GetMainThread());
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NS_ProxyRelease(mainThread, mIconURI);
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}
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NS_DECL_ISUPPORTS
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NS_DECL_NSIINPUTSTREAM
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private:
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PRBool IsClosed()
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{
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return NS_FAILED(mStatus);
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}
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nsresult Init();
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nsresult mStatus;
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PRBool mInited;
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PRUint32 mSize;
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PRUint32 mAvailable;
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nsCOMPtr<nsIMozIconURI> mIconURI;
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nsCOMPtr<nsIFile> mFile;
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nsAutoArrayPtr<char> mBuffer;
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};
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nsresult
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nsIconInputStream::Init()
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{
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mInited = PR_TRUE;
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NS_ENSURE_TRUE(mIconURI, NS_ERROR_FAILURE);
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// Check whether the icon requested's a file icon or a stock icon
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nsresult rv = NS_ERROR_NOT_AVAILABLE;
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// GetDIBits does not exist on windows mobile.
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HICON hIcon = NULL;
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#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
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nsCAutoString stockIcon;
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mIconURI->GetStockIcon(stockIcon);
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if (!stockIcon.IsEmpty())
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rv = GetStockHIcon(mIconURI, &hIcon);
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else
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#endif
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rv = GetHIconFromFile(mIconURI, mFile, &hIcon);
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if (!NS_SUCCEEDED(rv)) {
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mStatus = rv;
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return rv;
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}
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if (hIcon)
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{
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// we got a handle to an icon. Now we want to get a bitmap for the icon using GetIconInfo....
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ICONINFO iconInfo;
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if (GetIconInfo(hIcon, &iconInfo))
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{
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// we got the bitmaps, first find out their size
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HDC hDC = CreateCompatibleDC(NULL); // get a device context for the screen.
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BITMAPINFOHEADER maskHeader = {sizeof(BITMAPINFOHEADER)};
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BITMAPINFOHEADER colorHeader = {sizeof(BITMAPINFOHEADER)};
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int colorTableSize, maskTableSize;
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if (GetDIBits(hDC, iconInfo.hbmMask, 0, 0, NULL, (BITMAPINFO*)&maskHeader, DIB_RGB_COLORS) &&
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GetDIBits(hDC, iconInfo.hbmColor, 0, 0, NULL, (BITMAPINFO*)&colorHeader, DIB_RGB_COLORS) &&
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maskHeader.biHeight == colorHeader.biHeight &&
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maskHeader.biWidth == colorHeader.biWidth &&
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colorHeader.biBitCount > 8 &&
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colorHeader.biSizeImage > 0 &&
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maskHeader.biSizeImage > 0 &&
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(colorTableSize = GetColorTableSize(&colorHeader)) >= 0 &&
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(maskTableSize = GetColorTableSize(&maskHeader)) >= 0) {
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mSize = sizeof(ICONFILEHEADER) +
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sizeof(ICONENTRY) +
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sizeof(BITMAPINFOHEADER) +
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colorHeader.biSizeImage +
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maskHeader.biSizeImage;
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// Fallible malloc is ugly
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mBuffer = (char*) ::operator new(mSize,
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mozilla::fallible_t());
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if (!mBuffer) {
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rv = NS_ERROR_OUT_OF_MEMORY;
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} else {
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char *whereTo = mBuffer;
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int howMuch;
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// the data starts with an icon file header
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ICONFILEHEADER iconHeader;
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iconHeader.ifhReserved = 0;
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iconHeader.ifhType = 1;
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iconHeader.ifhCount = 1;
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howMuch = sizeof(ICONFILEHEADER);
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memcpy(whereTo, &iconHeader, howMuch);
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whereTo += howMuch;
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// followed by the single icon entry
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ICONENTRY iconEntry;
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iconEntry.ieWidth = colorHeader.biWidth;
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iconEntry.ieHeight = colorHeader.biHeight;
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iconEntry.ieColors = 0;
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iconEntry.ieReserved = 0;
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iconEntry.iePlanes = 1;
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iconEntry.ieBitCount = colorHeader.biBitCount;
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iconEntry.ieSizeImage = sizeof(BITMAPINFOHEADER) +
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colorHeader.biSizeImage +
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maskHeader.biSizeImage;
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iconEntry.ieFileOffset = sizeof(ICONFILEHEADER) + sizeof(ICONENTRY);
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howMuch = sizeof(ICONENTRY);
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memcpy(whereTo, &iconEntry, howMuch);
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whereTo += howMuch;
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// followed by the bitmap info header
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// (doubling the height because icons have two bitmaps)
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colorHeader.biHeight *= 2;
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colorHeader.biSizeImage += maskHeader.biSizeImage;
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howMuch = sizeof(BITMAPINFOHEADER);
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memcpy(whereTo, &colorHeader, howMuch);
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whereTo += howMuch;
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colorHeader.biHeight /= 2;
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colorHeader.biSizeImage -= maskHeader.biSizeImage;
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// followed by the XOR bitmap data (colorHeader)
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// (you'd expect the color table to come here, but it apparently doesn't)
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BITMAPINFO* colorInfo = CreateBitmapInfo(&colorHeader, colorTableSize);
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if (colorInfo && GetDIBits(hDC, iconInfo.hbmColor, 0,
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colorHeader.biHeight, whereTo, colorInfo,
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DIB_RGB_COLORS)) {
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whereTo += colorHeader.biSizeImage;
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// and finally the AND bitmap data (maskHeader)
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BITMAPINFO* maskInfo = CreateBitmapInfo(&maskHeader, maskTableSize);
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if (maskInfo && GetDIBits(hDC, iconInfo.hbmMask, 0,
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maskHeader.biHeight, whereTo, maskInfo,
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DIB_RGB_COLORS)) {
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rv = NS_OK; // We succeeded
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} // if we got bitmap bits
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delete maskInfo;
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} // if we got mask bits
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delete colorInfo;
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mAvailable = mSize;
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} // if we allocated the buffer
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} // if we got mask size
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DeleteDC(hDC);
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DeleteObject(iconInfo.hbmColor);
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DeleteObject(iconInfo.hbmMask);
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} // if we got icon info
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DestroyIcon(hIcon);
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} // if we got an hIcon
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mStatus = rv;
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return rv;
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}
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NS_IMPL_THREADSAFE_ISUPPORTS1(nsIconInputStream, nsIInputStream)
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// nsIconInputStream::nsIInputStream
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NS_IMETHODIMP
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nsIconInputStream::Close()
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{
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if (IsClosed())
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return NS_OK;
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mBuffer = nsnull; // Free our buffer if any
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return mStatus = NS_BASE_STREAM_CLOSED; // Set our status and return it
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}
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NS_IMETHODIMP
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nsIconInputStream::Available(PRUint32 *result)
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{
|
||||
if (!mInited)
|
||||
Init();
|
||||
|
||||
if (IsClosed())
|
||||
return mStatus;
|
||||
|
||||
return mAvailable;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsIconInputStream::Read(char *buf, PRUint32 count, PRUint32 *result)
|
||||
{
|
||||
if (mStatus == NS_BASE_STREAM_CLOSED)
|
||||
return NS_OK;
|
||||
|
||||
if (IsClosed())
|
||||
return mStatus;
|
||||
|
||||
if (!mInited)
|
||||
Init();
|
||||
|
||||
// Check this again to see if init failed
|
||||
if (IsClosed())
|
||||
return mStatus;
|
||||
|
||||
*result = NS_MIN(count, mAvailable);
|
||||
memcpy(buf, mBuffer + (mSize - mAvailable), *result);
|
||||
mAvailable -= *result;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsIconInputStream::ReadSegments(nsWriteSegmentFun fun, void *closure,
|
||||
PRUint32 count, PRUint32 *result)
|
||||
{
|
||||
return NS_ERROR_NOT_IMPLEMENTED;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsIconInputStream::IsNonBlocking(PRBool *result)
|
||||
{
|
||||
*result = PR_FALSE;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
// nsIconChannel methods
|
||||
nsIconChannel::nsIconChannel()
|
||||
{
|
||||
@ -210,37 +697,13 @@ NS_IMETHODIMP nsIconChannel::GetURI(nsIURI* *aURI)
|
||||
NS_IMETHODIMP
|
||||
nsIconChannel::Open(nsIInputStream **_retval)
|
||||
{
|
||||
return MakeInputStream(_retval, PR_FALSE);
|
||||
}
|
||||
|
||||
nsresult nsIconChannel::ExtractIconInfoFromUrl(nsIFile ** aLocalFile, PRUint32 * aDesiredImageSize, nsCString &aContentType, nsCString &aFileExtension)
|
||||
{
|
||||
nsresult rv = NS_OK;
|
||||
nsCOMPtr<nsIMozIconURI> iconURI (do_QueryInterface(mUrl, &rv));
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
iconURI->GetImageSize(aDesiredImageSize);
|
||||
iconURI->GetContentType(aContentType);
|
||||
iconURI->GetFileExtension(aFileExtension);
|
||||
|
||||
nsCOMPtr<nsIURL> url;
|
||||
rv = iconURI->GetIconURL(getter_AddRefs(url));
|
||||
if (NS_FAILED(rv) || !url) return NS_OK;
|
||||
|
||||
nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(url, &rv);
|
||||
if (NS_FAILED(rv) || !fileURL) return NS_OK;
|
||||
|
||||
nsCOMPtr<nsIFile> file;
|
||||
rv = fileURL->GetFile(getter_AddRefs(file));
|
||||
if (NS_FAILED(rv) || !file) return NS_OK;
|
||||
|
||||
return file->Clone(aLocalFile);
|
||||
return MakeInputStream(_retval);
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsIconChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports *ctxt)
|
||||
{
|
||||
nsCOMPtr<nsIInputStream> inStream;
|
||||
nsresult rv = MakeInputStream(getter_AddRefs(inStream), PR_TRUE);
|
||||
nsresult rv = MakeInputStream(getter_AddRefs(inStream));
|
||||
if (NS_FAILED(rv))
|
||||
return rv;
|
||||
|
||||
@ -260,370 +723,12 @@ NS_IMETHODIMP nsIconChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports
|
||||
return rv;
|
||||
}
|
||||
|
||||
static DWORD GetSpecialFolderIcon(nsIFile* aFile, int aFolder, SHFILEINFOW* aSFI, UINT aInfoFlags)
|
||||
nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval)
|
||||
{
|
||||
DWORD shellResult = 0;
|
||||
|
||||
if (!aFile)
|
||||
return shellResult;
|
||||
|
||||
PRUnichar fileNativePath[MAX_PATH];
|
||||
nsAutoString fileNativePathStr;
|
||||
aFile->GetPath(fileNativePathStr);
|
||||
::GetShortPathNameW(fileNativePathStr.get(), fileNativePath, NS_ARRAY_LENGTH(fileNativePath));
|
||||
|
||||
LPITEMIDLIST idList;
|
||||
HRESULT hr = ::SHGetSpecialFolderLocation(NULL, aFolder, &idList);
|
||||
if (SUCCEEDED(hr)) {
|
||||
PRUnichar specialNativePath[MAX_PATH];
|
||||
::SHGetPathFromIDListW(idList, specialNativePath);
|
||||
::GetShortPathNameW(specialNativePath, specialNativePath, NS_ARRAY_LENGTH(specialNativePath));
|
||||
|
||||
if (!wcsicmp(fileNativePath, specialNativePath)) {
|
||||
aInfoFlags |= (SHGFI_PIDL | SHGFI_SYSICONINDEX);
|
||||
shellResult = ::SHGetFileInfoW((LPCWSTR)(LPCITEMIDLIST)idList, 0, aSFI,
|
||||
sizeof(*aSFI), aInfoFlags);
|
||||
IMalloc* pMalloc;
|
||||
hr = ::SHGetMalloc(&pMalloc);
|
||||
if (SUCCEEDED(hr)) {
|
||||
pMalloc->Free(idList);
|
||||
pMalloc->Release();
|
||||
}
|
||||
}
|
||||
}
|
||||
return shellResult;
|
||||
nsRefPtr<nsIconInputStream> stream = new nsIconInputStream(mUrl);
|
||||
return CallQueryInterface(stream, _retval);
|
||||
}
|
||||
|
||||
static UINT GetSizeInfoFlag(PRUint32 aDesiredImageSize)
|
||||
{
|
||||
UINT infoFlag;
|
||||
if (aDesiredImageSize > 16)
|
||||
infoFlag = SHGFI_SHELLICONSIZE;
|
||||
else
|
||||
infoFlag = SHGFI_SMALLICON;
|
||||
|
||||
return infoFlag;
|
||||
}
|
||||
|
||||
nsresult nsIconChannel::GetHIconFromFile(HICON *hIcon)
|
||||
{
|
||||
nsXPIDLCString contentType;
|
||||
nsCString fileExt;
|
||||
nsCOMPtr<nsIFile> localFile; // file we want an icon for
|
||||
PRUint32 desiredImageSize;
|
||||
nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile), &desiredImageSize, contentType, fileExt);
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
// if the file exists, we are going to use it's real attributes...otherwise we only want to use it for it's extension...
|
||||
SHFILEINFOW sfi;
|
||||
UINT infoFlags = SHGFI_ICON;
|
||||
|
||||
PRBool fileExists = PR_FALSE;
|
||||
|
||||
nsAutoString filePath;
|
||||
CopyASCIItoUTF16(fileExt, filePath);
|
||||
if (localFile)
|
||||
{
|
||||
rv = localFile->Normalize();
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
localFile->GetPath(filePath);
|
||||
if (filePath.Length() < 2 || filePath[1] != ':')
|
||||
return NS_ERROR_MALFORMED_URI; // UNC
|
||||
|
||||
if (filePath.Last() == ':')
|
||||
filePath.Append('\\');
|
||||
else {
|
||||
localFile->Exists(&fileExists);
|
||||
if (!fileExists)
|
||||
localFile->GetLeafName(filePath);
|
||||
}
|
||||
}
|
||||
|
||||
if (!fileExists)
|
||||
infoFlags |= SHGFI_USEFILEATTRIBUTES;
|
||||
|
||||
infoFlags |= GetSizeInfoFlag(desiredImageSize);
|
||||
|
||||
// if we have a content type... then use it! but for existing files, we want
|
||||
// to show their real icon.
|
||||
if (!fileExists && !contentType.IsEmpty())
|
||||
{
|
||||
nsCOMPtr<nsIMIMEService> mimeService (do_GetService(NS_MIMESERVICE_CONTRACTID, &rv));
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
nsCAutoString defFileExt;
|
||||
mimeService->GetPrimaryExtension(contentType, fileExt, defFileExt);
|
||||
// If the mime service does not know about this mime type, we show
|
||||
// the generic icon.
|
||||
// In any case, we need to insert a '.' before the extension.
|
||||
filePath = NS_LITERAL_STRING(".") + NS_ConvertUTF8toUTF16(defFileExt);
|
||||
}
|
||||
|
||||
// Is this the "Desktop" folder?
|
||||
DWORD shellResult = GetSpecialFolderIcon(localFile, CSIDL_DESKTOP, &sfi, infoFlags);
|
||||
if (!shellResult) {
|
||||
// Is this the "My Documents" folder?
|
||||
shellResult = GetSpecialFolderIcon(localFile, CSIDL_PERSONAL, &sfi, infoFlags);
|
||||
}
|
||||
|
||||
// There are other "Special Folders" and Namespace entities that we are not
|
||||
// fetching icons for, see:
|
||||
// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/enums/csidl.asp
|
||||
// If we ever need to get them, code to do so would be inserted here.
|
||||
|
||||
// Not a special folder, or something else failed above.
|
||||
if (!shellResult)
|
||||
shellResult = ::SHGetFileInfoW(filePath.get(),
|
||||
FILE_ATTRIBUTE_ARCHIVE, &sfi, sizeof(sfi), infoFlags);
|
||||
|
||||
if (shellResult && sfi.hIcon)
|
||||
*hIcon = sfi.hIcon;
|
||||
else
|
||||
rv = NS_ERROR_NOT_AVAILABLE;
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
|
||||
nsresult nsIconChannel::GetStockHIcon(nsIMozIconURI *aIconURI, HICON *hIcon)
|
||||
{
|
||||
nsresult rv = NS_OK;
|
||||
|
||||
// We can only do this on Vista or above
|
||||
HMODULE hShellDLL = ::LoadLibraryW(L"shell32.dll");
|
||||
SHGetStockIconInfoPtr pSHGetStockIconInfo =
|
||||
(SHGetStockIconInfoPtr) ::GetProcAddress(hShellDLL, "SHGetStockIconInfo");
|
||||
|
||||
if (pSHGetStockIconInfo)
|
||||
{
|
||||
PRUint32 desiredImageSize;
|
||||
aIconURI->GetImageSize(&desiredImageSize);
|
||||
nsCAutoString stockIcon;
|
||||
aIconURI->GetStockIcon(stockIcon);
|
||||
|
||||
SHSTOCKICONID stockIconID = GetStockIconIDForName(stockIcon);
|
||||
if (stockIconID == SIID_INVALID)
|
||||
return NS_ERROR_NOT_AVAILABLE;
|
||||
|
||||
UINT infoFlags = SHGSI_ICON;
|
||||
infoFlags |= GetSizeInfoFlag(desiredImageSize);
|
||||
|
||||
SHSTOCKICONINFO sii = {0};
|
||||
sii.cbSize = sizeof(sii);
|
||||
HRESULT hr = pSHGetStockIconInfo(stockIconID, infoFlags, &sii);
|
||||
|
||||
if (SUCCEEDED(hr))
|
||||
*hIcon = sii.hIcon;
|
||||
else
|
||||
rv = NS_ERROR_FAILURE;
|
||||
}
|
||||
else
|
||||
{
|
||||
rv = NS_ERROR_NOT_AVAILABLE;
|
||||
}
|
||||
|
||||
if (hShellDLL)
|
||||
::FreeLibrary(hShellDLL);
|
||||
|
||||
return rv;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Given a BITMAPINFOHEADER, returns the size of the color table.
|
||||
static int GetColorTableSize(BITMAPINFOHEADER* aHeader)
|
||||
{
|
||||
int colorTableSize = -1;
|
||||
|
||||
// http://msdn.microsoft.com/en-us/library/dd183376%28v=VS.85%29.aspx
|
||||
switch (aHeader->biBitCount) {
|
||||
case 0:
|
||||
colorTableSize = 0;
|
||||
break;
|
||||
case 1:
|
||||
colorTableSize = 2 * sizeof(RGBQUAD);
|
||||
break;
|
||||
case 4:
|
||||
case 8:
|
||||
{
|
||||
// The maximum possible size for the color table is 2**bpp, so check for
|
||||
// that and fail if we're not in those bounds
|
||||
unsigned int maxEntries = 1 << (aHeader->biBitCount);
|
||||
if (aHeader->biClrUsed > 0 && aHeader->biClrUsed <= maxEntries)
|
||||
colorTableSize = aHeader->biClrUsed * sizeof(RGBQUAD);
|
||||
else if (aHeader->biClrUsed == 0)
|
||||
colorTableSize = maxEntries * sizeof(RGBQUAD);
|
||||
break;
|
||||
}
|
||||
case 16:
|
||||
case 32:
|
||||
if (aHeader->biCompression == BI_RGB)
|
||||
colorTableSize = 0;
|
||||
else if (aHeader->biCompression == BI_BITFIELDS)
|
||||
colorTableSize = 3 * sizeof(DWORD);
|
||||
break;
|
||||
case 24:
|
||||
colorTableSize = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
if (colorTableSize < 0)
|
||||
NS_WARNING("Unable to figure out the color table size for this bitmap");
|
||||
|
||||
return colorTableSize;
|
||||
}
|
||||
|
||||
// Given a header and a size, creates a freshly allocated BITMAPINFO structure.
|
||||
// It is the caller's responsibility to null-check and delete the structure.
|
||||
static BITMAPINFO* CreateBitmapInfo(BITMAPINFOHEADER* aHeader,
|
||||
size_t aColorTableSize)
|
||||
{
|
||||
BITMAPINFO* bmi = (BITMAPINFO*) ::operator new(sizeof(BITMAPINFOHEADER) +
|
||||
aColorTableSize,
|
||||
mozilla::fallible_t());
|
||||
if (bmi) {
|
||||
memcpy(bmi, aHeader, sizeof(BITMAPINFOHEADER));
|
||||
memset(bmi->bmiColors, 0, aColorTableSize);
|
||||
}
|
||||
return bmi;
|
||||
}
|
||||
|
||||
nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBlocking)
|
||||
{
|
||||
// Check whether the icon requested's a file icon or a stock icon
|
||||
nsresult rv = NS_ERROR_NOT_AVAILABLE;
|
||||
|
||||
// GetDIBits does not exist on windows mobile.
|
||||
HICON hIcon = NULL;
|
||||
|
||||
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
|
||||
nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(mUrl, &rv));
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
nsCAutoString stockIcon;
|
||||
iconURI->GetStockIcon(stockIcon);
|
||||
if (!stockIcon.IsEmpty())
|
||||
rv = GetStockHIcon(iconURI, &hIcon);
|
||||
else
|
||||
#endif
|
||||
rv = GetHIconFromFile(&hIcon);
|
||||
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
if (hIcon)
|
||||
{
|
||||
// we got a handle to an icon. Now we want to get a bitmap for the icon using GetIconInfo....
|
||||
ICONINFO iconInfo;
|
||||
if (GetIconInfo(hIcon, &iconInfo))
|
||||
{
|
||||
// we got the bitmaps, first find out their size
|
||||
HDC hDC = CreateCompatibleDC(NULL); // get a device context for the screen.
|
||||
BITMAPINFOHEADER maskHeader = {sizeof(BITMAPINFOHEADER)};
|
||||
BITMAPINFOHEADER colorHeader = {sizeof(BITMAPINFOHEADER)};
|
||||
int colorTableSize, maskTableSize;
|
||||
if (GetDIBits(hDC, iconInfo.hbmMask, 0, 0, NULL, (BITMAPINFO*)&maskHeader, DIB_RGB_COLORS) &&
|
||||
GetDIBits(hDC, iconInfo.hbmColor, 0, 0, NULL, (BITMAPINFO*)&colorHeader, DIB_RGB_COLORS) &&
|
||||
maskHeader.biHeight == colorHeader.biHeight &&
|
||||
maskHeader.biWidth == colorHeader.biWidth &&
|
||||
colorHeader.biBitCount > 8 &&
|
||||
colorHeader.biSizeImage > 0 &&
|
||||
maskHeader.biSizeImage > 0 &&
|
||||
(colorTableSize = GetColorTableSize(&colorHeader)) >= 0 &&
|
||||
(maskTableSize = GetColorTableSize(&maskHeader)) >= 0) {
|
||||
PRUint32 iconSize = sizeof(ICONFILEHEADER) +
|
||||
sizeof(ICONENTRY) +
|
||||
sizeof(BITMAPINFOHEADER) +
|
||||
colorHeader.biSizeImage +
|
||||
maskHeader.biSizeImage;
|
||||
|
||||
char *buffer = new char[iconSize];
|
||||
if (!buffer)
|
||||
rv = NS_ERROR_OUT_OF_MEMORY;
|
||||
else {
|
||||
char *whereTo = buffer;
|
||||
int howMuch;
|
||||
|
||||
// the data starts with an icon file header
|
||||
ICONFILEHEADER iconHeader;
|
||||
iconHeader.ifhReserved = 0;
|
||||
iconHeader.ifhType = 1;
|
||||
iconHeader.ifhCount = 1;
|
||||
howMuch = sizeof(ICONFILEHEADER);
|
||||
memcpy(whereTo, &iconHeader, howMuch);
|
||||
whereTo += howMuch;
|
||||
|
||||
// followed by the single icon entry
|
||||
ICONENTRY iconEntry;
|
||||
iconEntry.ieWidth = colorHeader.biWidth;
|
||||
iconEntry.ieHeight = colorHeader.biHeight;
|
||||
iconEntry.ieColors = 0;
|
||||
iconEntry.ieReserved = 0;
|
||||
iconEntry.iePlanes = 1;
|
||||
iconEntry.ieBitCount = colorHeader.biBitCount;
|
||||
iconEntry.ieSizeImage = sizeof(BITMAPINFOHEADER) +
|
||||
colorHeader.biSizeImage +
|
||||
maskHeader.biSizeImage;
|
||||
iconEntry.ieFileOffset = sizeof(ICONFILEHEADER) + sizeof(ICONENTRY);
|
||||
howMuch = sizeof(ICONENTRY);
|
||||
memcpy(whereTo, &iconEntry, howMuch);
|
||||
whereTo += howMuch;
|
||||
|
||||
// followed by the bitmap info header
|
||||
// (doubling the height because icons have two bitmaps)
|
||||
colorHeader.biHeight *= 2;
|
||||
colorHeader.biSizeImage += maskHeader.biSizeImage;
|
||||
howMuch = sizeof(BITMAPINFOHEADER);
|
||||
memcpy(whereTo, &colorHeader, howMuch);
|
||||
whereTo += howMuch;
|
||||
colorHeader.biHeight /= 2;
|
||||
colorHeader.biSizeImage -= maskHeader.biSizeImage;
|
||||
|
||||
// followed by the XOR bitmap data (colorHeader)
|
||||
// (you'd expect the color table to come here, but it apparently doesn't)
|
||||
BITMAPINFO* colorInfo = CreateBitmapInfo(&colorHeader, colorTableSize);
|
||||
if (colorInfo && GetDIBits(hDC, iconInfo.hbmColor, 0,
|
||||
colorHeader.biHeight, whereTo, colorInfo,
|
||||
DIB_RGB_COLORS)) {
|
||||
whereTo += colorHeader.biSizeImage;
|
||||
|
||||
// and finally the AND bitmap data (maskHeader)
|
||||
BITMAPINFO* maskInfo = CreateBitmapInfo(&maskHeader, maskTableSize);
|
||||
if (maskInfo && GetDIBits(hDC, iconInfo.hbmMask, 0,
|
||||
maskHeader.biHeight, whereTo, maskInfo,
|
||||
DIB_RGB_COLORS)) {
|
||||
// Now, create a pipe and stuff our data into it
|
||||
nsCOMPtr<nsIInputStream> inStream;
|
||||
nsCOMPtr<nsIOutputStream> outStream;
|
||||
rv = NS_NewPipe(getter_AddRefs(inStream), getter_AddRefs(outStream),
|
||||
iconSize, iconSize, nonBlocking);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
PRUint32 written;
|
||||
rv = outStream->Write(buffer, iconSize, &written);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
NS_ADDREF(*_retval = inStream);
|
||||
}
|
||||
}
|
||||
|
||||
} // if we got bitmap bits
|
||||
delete maskInfo;
|
||||
} // if we got mask bits
|
||||
delete colorInfo;
|
||||
delete [] buffer;
|
||||
} // if we allocated the buffer
|
||||
} // if we got mask size
|
||||
|
||||
DeleteDC(hDC);
|
||||
DeleteObject(iconInfo.hbmColor);
|
||||
DeleteObject(iconInfo.hbmMask);
|
||||
} // if we got icon info
|
||||
DestroyIcon(hIcon);
|
||||
} // if we got an hIcon
|
||||
|
||||
// If we didn't make a stream, then fail.
|
||||
if (!*_retval && NS_SUCCEEDED(rv))
|
||||
rv = NS_ERROR_NOT_AVAILABLE;
|
||||
return rv;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsIconChannel::GetContentType(nsACString &aContentType)
|
||||
{
|
||||
|
||||
@ -80,15 +80,7 @@ protected:
|
||||
nsCOMPtr<nsIInputStreamPump> mPump;
|
||||
nsCOMPtr<nsIStreamListener> mListener;
|
||||
|
||||
nsresult ExtractIconInfoFromUrl(nsIFile ** aLocalFile, PRUint32 * aDesiredImageSize, nsCString &aContentType, nsCString &aFileExtension);
|
||||
nsresult GetHIconFromFile(HICON *hIcon);
|
||||
nsresult MakeInputStream(nsIInputStream** _retval, PRBool nonBlocking);
|
||||
|
||||
// Functions specific to Vista and above
|
||||
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
|
||||
protected:
|
||||
nsresult GetStockHIcon(nsIMozIconURI *aIconURI, HICON *hIcon);
|
||||
#endif
|
||||
nsresult MakeInputStream(nsIInputStream** _retval);
|
||||
};
|
||||
|
||||
#endif /* nsIconChannel_h___ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user