mirror of
https://github.com/reactos/reactos.git
synced 2024-06-16 01:21:44 +00:00
d7722f39fb
Note that even if the MS PSDK and MSDN documents an hypothetical ANSI version SHCreateFileExtractIconA(), this one never existed exported in any Windows version!
378 lines
10 KiB
C++
378 lines
10 KiB
C++
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Registry namespace extension
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* FILE: dll/win32/shell32/extracticon.c
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* PURPOSE: Icon extraction
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*
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* PROGRAMMERS: Hervé Poussineau (hpoussin@reactos.org)
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*/
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#include "precomp.h"
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WINE_DEFAULT_DEBUG_CHANNEL(shell);
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struct IconLocation
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{
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LPWSTR file;
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UINT index;
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};
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class CExtractIcon :
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public CComObjectRootEx<CComMultiThreadModelNoCS>,
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public IDefaultExtractIconInit,
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public IExtractIconW,
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public IExtractIconA,
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public IPersistFile
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{
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private:
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UINT flags;
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struct IconLocation defaultIcon;
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struct IconLocation normalIcon;
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struct IconLocation openIcon;
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struct IconLocation shortcutIcon;
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public:
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CExtractIcon();
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~CExtractIcon();
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// IDefaultExtractIconInit
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virtual HRESULT STDMETHODCALLTYPE SetDefaultIcon(LPCWSTR pszFile, int iIcon);
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virtual HRESULT STDMETHODCALLTYPE SetFlags(UINT uFlags);
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virtual HRESULT STDMETHODCALLTYPE SetKey(HKEY hkey);
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virtual HRESULT STDMETHODCALLTYPE SetNormalIcon(LPCWSTR pszFile, int iIcon);
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virtual HRESULT STDMETHODCALLTYPE SetOpenIcon(LPCWSTR pszFile, int iIcon);
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virtual HRESULT STDMETHODCALLTYPE SetShortcutIcon(LPCWSTR pszFile, int iIcon);
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// IExtractIconW
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virtual HRESULT STDMETHODCALLTYPE GetIconLocation(UINT uFlags, LPWSTR szIconFile, UINT cchMax, int *piIndex, UINT *pwFlags);
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virtual HRESULT STDMETHODCALLTYPE Extract(LPCWSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize);
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// IExtractIconA
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virtual HRESULT STDMETHODCALLTYPE GetIconLocation(UINT uFlags, LPSTR szIconFile, UINT cchMax, int *piIndex, UINT *pwFlags);
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virtual HRESULT STDMETHODCALLTYPE Extract(LPCSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize);
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// IPersist
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virtual HRESULT STDMETHODCALLTYPE GetClassID(CLSID *pClassID);
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virtual HRESULT STDMETHODCALLTYPE IsDirty();
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// IPersistFile
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virtual HRESULT STDMETHODCALLTYPE Load(LPCOLESTR pszFileName, DWORD dwMode);
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virtual HRESULT STDMETHODCALLTYPE Save(LPCOLESTR pszFileName, BOOL fRemember);
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virtual HRESULT STDMETHODCALLTYPE SaveCompleted(LPCOLESTR pszFileName);
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virtual HRESULT STDMETHODCALLTYPE GetCurFile(LPOLESTR *ppszFileName);
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BEGIN_COM_MAP(CExtractIcon)
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COM_INTERFACE_ENTRY_IID(IID_IDefaultExtractIconInit, IDefaultExtractIconInit)
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COM_INTERFACE_ENTRY_IID(IID_IExtractIconW, IExtractIconW)
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COM_INTERFACE_ENTRY_IID(IID_IExtractIconA, IExtractIconA)
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COM_INTERFACE_ENTRY_IID(IID_IPersist, IPersist)
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COM_INTERFACE_ENTRY_IID(IID_IPersistFile, IPersistFile)
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END_COM_MAP()
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};
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VOID DuplicateString(
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LPCWSTR Source,
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LPWSTR *Destination)
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{
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SIZE_T cb;
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if (*Destination)
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CoTaskMemFree(*Destination);
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cb = (wcslen(Source) + 1) * sizeof(WCHAR);
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*Destination = (LPWSTR)CoTaskMemAlloc(cb);
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if (!*Destination)
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return;
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CopyMemory(*Destination, Source, cb);
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}
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CExtractIcon::CExtractIcon()
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{
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flags = 0;
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memset(&defaultIcon, 0, sizeof(defaultIcon));
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memset(&normalIcon, 0, sizeof(normalIcon));
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memset(&openIcon, 0, sizeof(openIcon));
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memset(&shortcutIcon, 0, sizeof(shortcutIcon));
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}
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CExtractIcon::~CExtractIcon()
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{
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if (defaultIcon.file) CoTaskMemFree(defaultIcon.file);
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if (normalIcon.file) CoTaskMemFree(normalIcon.file);
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if (openIcon.file) CoTaskMemFree(openIcon.file);
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if (shortcutIcon.file) CoTaskMemFree(shortcutIcon.file);
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SetDefaultIcon(
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LPCWSTR pszFile,
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int iIcon)
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{
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TRACE("(%p, %s, %d)\n", this, debugstr_w(pszFile), iIcon);
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DuplicateString(pszFile, &defaultIcon.file);
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if (!defaultIcon.file)
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return E_OUTOFMEMORY;
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defaultIcon.index = iIcon;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SetFlags(
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UINT uFlags)
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{
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TRACE("(%p, 0x%x)\n", this, uFlags);
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flags = uFlags;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SetKey(
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HKEY hkey)
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{
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FIXME("(%p, %p)\n", this, hkey);
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UNIMPLEMENTED;
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SetNormalIcon(
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LPCWSTR pszFile,
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int iIcon)
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{
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TRACE("(%p, %s, %d)\n", this, debugstr_w(pszFile), iIcon);
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DuplicateString(pszFile, &normalIcon.file);
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if (!normalIcon.file)
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return E_OUTOFMEMORY;
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normalIcon.index = iIcon;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SetOpenIcon(
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LPCWSTR pszFile,
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int iIcon)
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{
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TRACE("(%p, %s, %d)\n", this, debugstr_w(pszFile), iIcon);
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DuplicateString(pszFile, &openIcon.file);
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if (!openIcon.file)
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return E_OUTOFMEMORY;
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openIcon.index = iIcon;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SetShortcutIcon(
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LPCWSTR pszFile,
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int iIcon)
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{
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TRACE("(%p, %s, %d)\n", this, debugstr_w(pszFile), iIcon);
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DuplicateString(pszFile, &shortcutIcon.file);
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if (!shortcutIcon.file)
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return E_OUTOFMEMORY;
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shortcutIcon.index = iIcon;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::GetIconLocation(
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UINT uFlags,
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LPWSTR szIconFile,
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UINT cchMax,
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int *piIndex,
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UINT *pwFlags)
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{
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const struct IconLocation *icon = NULL;
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SIZE_T cb;
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TRACE("(%p, 0x%x, %s, 0x%x, %p, %p)\n", this, uFlags, debugstr_w(szIconFile), cchMax, piIndex, pwFlags);
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if (!piIndex || !pwFlags)
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return E_POINTER;
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if (uFlags & GIL_DEFAULTICON)
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icon = defaultIcon.file ? &defaultIcon : &normalIcon;
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else if (uFlags & GIL_FORSHORTCUT)
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icon = shortcutIcon.file ? &shortcutIcon : &normalIcon;
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else if (uFlags & GIL_OPENICON)
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icon = openIcon.file ? &openIcon : &normalIcon;
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else
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icon = &normalIcon;
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if (!icon->file)
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return E_FAIL;
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cb = wcslen(icon->file) + 1;
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if (cchMax < (UINT)cb)
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return E_FAIL;
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CopyMemory(szIconFile, icon->file, cb * sizeof(WCHAR));
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*piIndex = icon->index;
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*pwFlags = flags;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::Extract(
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LPCWSTR pszFile,
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UINT nIconIndex,
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HICON *phiconLarge,
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HICON *phiconSmall,
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UINT nIconSize)
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{
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TRACE("(%p, %s, %u, %p, %p, %u)\n", this, debugstr_w(pszFile), nIconIndex, phiconLarge, phiconSmall, nIconSize);
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/* Nothing to do, ExtractIconW::GetIconLocation should be enough */
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return S_FALSE;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::GetIconLocation(
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UINT uFlags,
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LPSTR szIconFile,
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UINT cchMax,
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int *piIndex,
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UINT *pwFlags)
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{
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LPWSTR szIconFileW = NULL;
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HRESULT hr;
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if (cchMax > 0)
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{
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szIconFileW = (LPWSTR)CoTaskMemAlloc(cchMax * sizeof(WCHAR));
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if (!szIconFileW)
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return E_OUTOFMEMORY;
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}
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hr = GetIconLocation(uFlags, szIconFileW, cchMax, piIndex, pwFlags);
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if (SUCCEEDED(hr) && cchMax > 0)
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if (0 == WideCharToMultiByte(CP_ACP, 0, szIconFileW, cchMax, szIconFile, cchMax, NULL, NULL))
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hr = E_FAIL;
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if (szIconFileW)
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CoTaskMemFree(szIconFileW);
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return hr;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::Extract(
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LPCSTR pszFile,
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UINT nIconIndex,
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HICON *phiconLarge,
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HICON *phiconSmall,
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UINT nIconSize)
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{
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LPWSTR pszFileW = NULL;
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HRESULT hr;
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if (pszFile)
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{
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int nLength;
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nLength = MultiByteToWideChar(CP_ACP, 0, pszFile, -1, NULL, 0);
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if (nLength == 0)
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return E_FAIL;
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pszFileW = (LPWSTR)CoTaskMemAlloc(nLength * sizeof(WCHAR));
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if (!pszFileW)
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return E_OUTOFMEMORY;
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if (!MultiByteToWideChar(CP_ACP, 0, pszFile, nLength, pszFileW, nLength))
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{
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CoTaskMemFree(pszFileW);
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return E_FAIL;
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}
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}
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hr = Extract(pszFileW, nIconIndex, phiconLarge, phiconSmall, nIconSize);
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if (pszFileW)
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CoTaskMemFree(pszFileW);
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return hr;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::GetClassID(
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CLSID *pClassID)
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{
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TRACE("(%p, %p)\n", this, pClassID);
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if (!pClassID)
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return E_POINTER;
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*pClassID = GUID_NULL;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::IsDirty()
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{
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FIXME("(%p)\n", this);
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UNIMPLEMENTED;
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::Load(
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LPCOLESTR pszFileName,
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DWORD dwMode)
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{
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FIXME("(%p, %s, %u)\n", this, debugstr_w(pszFileName), dwMode);
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UNIMPLEMENTED;
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::Save(
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LPCOLESTR pszFileName,
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BOOL fRemember)
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{
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FIXME("(%p, %s, %d)\n", this, debugstr_w(pszFileName), fRemember);
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UNIMPLEMENTED;
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::SaveCompleted(
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LPCOLESTR pszFileName)
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{
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FIXME("(%p, %s)\n", this, debugstr_w(pszFileName));
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UNIMPLEMENTED;
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE CExtractIcon::GetCurFile(
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LPOLESTR *ppszFileName)
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{
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FIXME("(%p, %p)\n", this, ppszFileName);
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UNIMPLEMENTED;
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return E_NOTIMPL;
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}
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HRESULT WINAPI SHCreateDefaultExtractIcon(REFIID riid, void **ppv)
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{
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return ShellObjectCreator<CExtractIcon>(riid, ppv);
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}
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/*
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* Partially implemented
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* See apitests\shell32\SHCreateFileExtractIconW.cpp for details
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* Currently (march 2018) our shell does not handle IExtractIconW with an invalid path,
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* so this (wrong) implementation actually works better for us.
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*/
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EXTERN_C
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HRESULT
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WINAPI
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SHCreateFileExtractIconW(
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_In_ LPCWSTR pszFile,
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_In_ DWORD dwFileAttributes,
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_In_ REFIID riid,
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_Outptr_ void **ppv)
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{
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SHFILEINFOW shfi;
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ULONG_PTR firet = SHGetFileInfoW(pszFile, dwFileAttributes, &shfi, sizeof(shfi), SHGFI_USEFILEATTRIBUTES | SHGFI_ICONLOCATION);
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HRESULT hr = E_FAIL;
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if (firet)
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{
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CComPtr<IDefaultExtractIconInit> iconInit;
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hr = SHCreateDefaultExtractIcon(IID_PPV_ARG(IDefaultExtractIconInit, &iconInit));
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if (FAILED_UNEXPECTEDLY(hr))
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return hr;
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hr = iconInit->SetNormalIcon(shfi.szDisplayName, shfi.iIcon);
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if (FAILED_UNEXPECTEDLY(hr))
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return hr;
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return iconInit->QueryInterface(riid, ppv);
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}
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if (FAILED_UNEXPECTEDLY(hr))
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return hr;
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return hr;
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}
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