568 lines
16 KiB
C++
568 lines
16 KiB
C++
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#include "precomp.h"
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#include <shimgvw.h>
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#include "PrevCtrl.h"
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#include "autosecurity.h"
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#include <dispex.h>
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#pragma hdrstop
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LRESULT CPreview::OnCreate(UINT , WPARAM , LPARAM , BOOL&)
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{
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ATLTRACE(_T("CPreview::OnCreate\n"));
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// Create the preview window
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RECT rcWnd;
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GetClientRect(&rcWnd);
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if (m_cwndPreview.Create(m_hWnd, rcWnd, NULL, WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 0))
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{
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m_cwndPreview.SetNotify(this);
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HPALETTE hpal;
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if (SUCCEEDED(GetAmbientPalette(hpal)))
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m_cwndPreview.SetPalette(hpal);
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return 0;
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}
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return -1;
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}
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LRESULT CPreview::OnActivate(UINT , WPARAM , LPARAM , BOOL& bHandled)
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{
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ATLTRACE(_T("CPreview::OnActivate\n"));
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m_cwndPreview.SetFocus();
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bHandled = false;
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return 0;
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}
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HRESULT CPreview::OnDrawAdvanced(ATL_DRAWINFO&)
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{
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ATLTRACE(_T("CPreview::OnDrawAdvanced\n"));
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return S_OK;
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}
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LRESULT CPreview::OnEraseBkgnd(UINT , WPARAM , LPARAM , BOOL&)
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{
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ATLTRACE(_T("CPreview::OnEraseBkgnd\n"));
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return TRUE;
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}
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LRESULT CPreview::OnSize(UINT , WPARAM , LPARAM lParam, BOOL&)
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{
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ATLTRACE(_T("CPreview::OnSize\n"));
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::SetWindowPos(m_cwndPreview.m_hWnd, NULL, 0,0,
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LOWORD(lParam), HIWORD(lParam), SWP_NOZORDER | SWP_NOACTIVATE);
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return 0;
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}
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// IObjectSafety::GetInterfaceSafetyOptions
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//
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// This method never gets called. We are safe for any and every thing. There should
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// be no possible way that this control could lose, destroy, or expose data.
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STDMETHODIMP CPreview::GetInterfaceSafetyOptions(REFIID riid, DWORD *pdwSupportedOptions,
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DWORD *pdwEnabledOptions)
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{
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ATLTRACE(_T("IObjectSafetyImpl::GetInterfaceSafetyOptions\n"));
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HRESULT hr;
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hr = IObjectSafetyImpl<CPreview, INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA>::GetInterfaceSafetyOptions(riid, pdwSupportedOptions, pdwEnabledOptions);
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if (SUCCEEDED(hr))
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{
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IsHostLocalZone(CAS_REG_VALIDATION, &hr);
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}
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return hr;
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}
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STDMETHODIMP CPreview::SetInterfaceSafetyOptions(REFIID riid, DWORD dwSupportedOptions,
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DWORD dwEnabledOptions)
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{
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ATLTRACE(_T("IObjectSafetyImpl::SetInterfaceSafetyOptions\n"));
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HRESULT hr;
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hr = IObjectSafetyImpl<CPreview, INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA>::SetInterfaceSafetyOptions(riid, dwSupportedOptions, dwEnabledOptions);
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if (SUCCEEDED(hr))
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{
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IsHostLocalZone(CAS_REG_VALIDATION, &hr);
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}
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return hr;
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}
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// IPersistPropertyBag::Load
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//
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// We have the following properties that we can load from the property bag:
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// Toolbar false/zero = don't show the toolbar, otherwise show the toolbar
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// Full Screen false/zero = don't show fullscreen button on toolbar, otherwise show the button
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// Context Menu false/zero = don't show context menu, otherwise show the context menu when the user right clicks
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// Print Button false/zero = don't show print button on toolbar, otherwise show the button
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STDMETHODIMP CPreview::Load(IPropertyBag * pPropBag, IErrorLog * pErrorLog)
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{
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HRESULT hr;
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VARIANT var;
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BOOL bDummy = TRUE;
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var.vt = VT_UI4;
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var.ulVal = TRUE;
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hr = pPropBag->Read(L"Toolbar", &var, NULL);
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if (SUCCEEDED(hr) && var.vt==VT_UI4)
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_TOOLBAR,var.ulVal,bDummy);
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}
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var.vt = VT_UI4;
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var.ulVal = TRUE;
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hr = pPropBag->Read(L"Full Screen", &var, NULL);
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if (SUCCEEDED(hr) && var.vt==VT_UI4)
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_FULLSCREENBTN,var.ulVal,bDummy);
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}
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var.vt = VT_UI4;
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var.ulVal = TRUE;
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hr = pPropBag->Read(L"Print Button", &var, NULL);
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if (SUCCEEDED(hr) && var.vt==VT_UI4)
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_PRINTBTN,var.ulVal,bDummy);
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}
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var.vt = VT_UI4;
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var.ulVal = TRUE;
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hr = pPropBag->Read(L"Context Menu", &var, NULL);
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if (SUCCEEDED(hr) && var.vt==VT_UI4)
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_CONTEXTMENU,var.ulVal,bDummy);
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}
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var.vt = VT_UI4;
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var.ulVal = FALSE;
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hr = pPropBag->Read(L"Allow Online", &var, NULL);
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if (SUCCEEDED(hr) && var.vt==VT_UI4)
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_ALLOWGOONLINE,var.ulVal,bDummy);
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}
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var.vt = VT_UI4;
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var.ulVal = FALSE;
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hr = pPropBag->Read(L"Disable Edit", &var, NULL);
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if (SUCCEEDED(hr) && var.vt==VT_UI4)
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_DISABLEEDIT,var.ulVal,bDummy);
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}
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return S_OK;
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}
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// If we are initialized via IStream, read a DWORD from the stream that is a mask
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// for which toolbar buttons to show
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STDMETHODIMP CPreview::Load(IStream *pStream)
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{
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DWORD dwFlags = 0;
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ULONG ulRead = 0;
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BOOL bDummy = TRUE;
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if (SUCCEEDED(pStream->Read(&dwFlags, sizeof(dwFlags), &ulRead)) && ulRead == sizeof(dwFlags))
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{
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_TOOLBAR,dwFlags & PVTB_TOOLBAR, bDummy);
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_FULLSCREENBTN,dwFlags & PVTB_HIDEFULLSCREEN, bDummy);
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_PRINTBTN,dwFlags & PVTB_HIDEPRINTBTN, bDummy);
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_CONTEXTMENU,dwFlags & PVTB_CONTEXTMENU, bDummy);
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_ALLOWGOONLINE,dwFlags & PVTB_ALLOWONLINE, bDummy);
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m_cwndPreview.IV_OnSetOptions(IV_SETOPTIONS,IVO_DISABLEEDIT,dwFlags & PVTB_DISABLEEDIT, bDummy);
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}
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return S_OK;
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}
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// IPreview Methods:
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STDMETHODIMP CPreview::ShowFile(BSTR bstrFileName)
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{
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m_cwndPreview.ShowFile(bstrFileName, 1);
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return S_OK;
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}
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STDMETHODIMP CPreview::ShowFile(BSTR bstrFileName, int iSelectCount)
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{
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m_cwndPreview.ShowFile(bstrFileName, iSelectCount);
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return S_OK;
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}
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STDMETHODIMP CPreview::Show(VARIANT var)
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{
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HRESULT hr;
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switch (var.vt)
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{
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case VT_UNKNOWN:
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case VT_DISPATCH:
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// QI for Folder Item
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if (var.punkVal)
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{
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FolderItems *pfis;
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FolderItem *pfi;
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hr = var.punkVal->QueryInterface(IID_PPV_ARG(FolderItem, &pfi));
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if (SUCCEEDED(hr))
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{
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// If the item is a link we want to get the link's target:
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VARIANT_BOOL vbool;
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hr = pfi->get_IsLink(&vbool);
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if (SUCCEEDED(hr) && (VARIANT_FALSE != vbool)) // IsLink returns TRUE, not VARIANT_TRUE
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{
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IDispatch *pdisp;
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hr = pfi->get_GetLink(&pdisp);
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if (SUCCEEDED(hr) && pdisp)
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{
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IShellLinkDual2 * psl2;
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hr = pdisp->QueryInterface(IID_PPV_ARG(IShellLinkDual2, &psl2));
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if (SUCCEEDED(hr) && psl2)
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{
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FolderItem * pfiTarg;
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hr = psl2->get_Target(&pfiTarg);
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if (SUCCEEDED(hr) && pfiTarg)
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{
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pfi->Release();
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pfi = pfiTarg;
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}
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psl2->Release();
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}
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pdisp->Release();
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}
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}
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// Now we need to know the path for this item. We can only view items if
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// we can get a path or URL to the target so some namespaces aren't viewable.
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BSTR bstr;
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hr = pfi->get_Path(&bstr);
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if (SUCCEEDED(hr))
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{
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m_cwndPreview.ShowFile(bstr, 1);
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SysFreeString(bstr);
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hr = S_OK;
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}
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else
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{
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// we couldn't get the path so we will display the "No Preview" message
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m_cwndPreview.ShowFile(NULL, 1);
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hr = S_FALSE;
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}
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// now release the Folder Item pointer
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pfi->Release();
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return hr;
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}
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else if (SUCCEEDED(var.punkVal->QueryInterface(IID_PPV_ARG(FolderItems, &pfis))))
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{
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// currently in the multi-select case we just show the multi-select message.
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// eventually this should go to slideshow mode
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m_cwndPreview.ShowFile(NULL, 2);
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pfis->Release();
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return S_FALSE;
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}
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}
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// the unknown pointer isn't for an object type that we know about
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return E_INVALIDARG;
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case VT_BSTR:
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m_cwndPreview.ShowFile(var.bstrVal, 1);
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break;
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case VT_BOOL:
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// show(false) will hide the currently previewed item
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if (VARIANT_FALSE == var.boolVal)
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{
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m_cwndPreview.ShowFile(NULL, 0);
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return S_OK;
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}
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else
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{
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return E_INVALIDARG;
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}
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default:
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return E_INVALIDARG;
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}
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return S_OK;
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}
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//*** IsVK_TABCycler -- is key a TAB-equivalent
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// ENTRY/EXIT
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// dir 0 if not a TAB, non-0 if a TAB
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// NOTES
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// NYI: -1 for shift+tab, 1 for tab
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// cloned from browseui/util.cpp
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//
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int IsVK_TABCycler(MSG *pMsg)
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{
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if (!pMsg)
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return 0;
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if (pMsg->message != WM_KEYDOWN)
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return 0;
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if (! (pMsg->wParam == VK_TAB || pMsg->wParam == VK_F6))
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return 0;
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#if 0 // todo?
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return (GetAsyncKeyState(VK_SHIFT) < 0) ? -1 : 1;
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#endif
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return 1;
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}
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//***
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// NOTES
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// hard-coded 1/2/4 (vs. KEYMOD_*) is same thing atlctl.h does. go figure...
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DWORD GetGrfMods()
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{
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DWORD dwMods;
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dwMods = 0;
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if (GetAsyncKeyState(VK_SHIFT) < 0)
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dwMods |= 1; // KEYMOD_SHIFT
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if (GetAsyncKeyState(VK_CONTROL) < 0)
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dwMods |= 2; // KEYMOD_CONTROL
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if (GetAsyncKeyState(VK_MENU) < 0)
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dwMods |= 4; // KEYMOD_MENU
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return dwMods;
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}
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STDMETHODIMP CPreview::TranslateAccelerator(LPMSG lpmsg)
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{
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ATLTRACE(_T("CPreview::TranslateAccelerator\n"));
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if (m_cwndPreview.TranslateAccelerator(lpmsg))
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{
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return S_OK;
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}
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if (IsVK_TABCycler(lpmsg))
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{
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// REVIEW: looks like newer versions of ATL might do this for us so
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// possibly we can replace w/ call to SUPER::TA when we upgrade.
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CComQIPtr <IOleControlSite, &IID_IOleControlSite> spOCS(m_spClientSite);
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if (spOCS) {
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return spOCS->TranslateAccelerator(lpmsg, GetGrfMods());
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}
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}
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return S_FALSE;
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}
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STDMETHODIMP CPreview::OnFrameWindowActivate(BOOL fActive)
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{
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if (fActive)
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{
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m_cwndPreview.SetFocus();
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}
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return S_OK;
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}
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LRESULT CPreview::OnSetFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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ATLTRACE(_T("CPreview::OnSetFocus\n"));
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LRESULT ret = CComControl<CPreview>::OnSetFocus(uMsg,wParam,lParam, bHandled);
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m_cwndPreview.SetFocus();
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::get_printable(BOOL * pVal)
|
||
|
|
{
|
||
|
|
// If we don't trust the host, we tell them it is always printable because we don't
|
||
|
|
// want them to be able to see if the file exists on the disk. Hackers can use
|
||
|
|
// this to determine where the OS is installed and which apps are installed.
|
||
|
|
*pVal = TRUE;
|
||
|
|
|
||
|
|
if (IsHostLocalZone(CAS_REG_VALIDATION, NULL))
|
||
|
|
{
|
||
|
|
*pVal = m_cwndPreview.GetPrintable();
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::put_printable(BOOL newVal)
|
||
|
|
{
|
||
|
|
return S_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::get_cxImage(long * pVal)
|
||
|
|
{
|
||
|
|
// REVIEW: Return an error and set output to zero if no image is currently displayed?
|
||
|
|
*pVal = m_cwndPreview.m_ctlPreview.m_cxImage;
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::get_cyImage(long * pVal)
|
||
|
|
{
|
||
|
|
// REVIEW: Return an error and set output to zero if no image is currently displayed?
|
||
|
|
*pVal = m_cwndPreview.m_ctlPreview.m_cyImage;
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::Zoom(int iDirection)
|
||
|
|
{
|
||
|
|
|
||
|
|
switch (iDirection)
|
||
|
|
{
|
||
|
|
case -1:
|
||
|
|
m_cwndPreview.ZoomOut();
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0:
|
||
|
|
return S_OK;
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
m_cwndPreview.ZoomIn();
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
return S_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::BestFit()
|
||
|
|
{
|
||
|
|
m_cwndPreview.BestFit();
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::ActualSize()
|
||
|
|
{
|
||
|
|
m_cwndPreview.ActualSize();
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::SlideShow()
|
||
|
|
{
|
||
|
|
HRESULT hr = m_cwndPreview.StartSlideShow(NULL);
|
||
|
|
return SUCCEEDED(hr) ? S_OK : S_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::Rotate(DWORD dwAngle)
|
||
|
|
{
|
||
|
|
HRESULT hr = m_cwndPreview.Rotate(dwAngle);
|
||
|
|
return SUCCEEDED(hr) ? S_OK : S_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::SetClientSite(IOleClientSite *pClientSite)
|
||
|
|
{
|
||
|
|
IOleObjectImpl<CPreview>::SetClientSite(pClientSite);
|
||
|
|
m_cwndPreview.SetSite(pClientSite);
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::SetSite(IUnknown* punkSite)
|
||
|
|
{
|
||
|
|
IObjectWithSiteImpl<CPreview>::SetSite(punkSite);
|
||
|
|
m_cwndPreview.SetSite(punkSite);
|
||
|
|
|
||
|
|
if (punkSite)
|
||
|
|
{
|
||
|
|
if (!_pfv)
|
||
|
|
{
|
||
|
|
IShellView *psv;
|
||
|
|
if (SUCCEEDED(IUnknown_QueryService(punkSite, SID_DefView, IID_PPV_ARG(IShellView, &psv))))
|
||
|
|
{
|
||
|
|
IDispatch *pdisp;
|
||
|
|
if (SUCCEEDED(psv->GetItemObject(SVGIO_BACKGROUND, IID_PPV_ARG(IDispatch, &pdisp))))
|
||
|
|
{
|
||
|
|
ConnectToConnectionPoint(SAFECAST(this, IPreview2 *), DIID_DShellFolderViewEvents, TRUE, pdisp, &_dwConnectionCookie, NULL);
|
||
|
|
_ProcessSelection();
|
||
|
|
pdisp->Release();
|
||
|
|
}
|
||
|
|
|
||
|
|
psv->QueryInterface(IID_PPV_ARG(IFolderView, &_pfv)); // capture this
|
||
|
|
|
||
|
|
psv->Release();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ATOMICRELEASE(_pfv); // break ref cycle
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS* pdispparams,
|
||
|
|
VARIANT* pvarResult, EXCEPINFO* pexcepinfo, UINT* puArgErr)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (dispidMember == DISPID_FOCUSCHANGED)
|
||
|
|
{
|
||
|
|
hr = _ProcessSelection();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
hr = CStockPropImpl<CPreview, IPreview2, &IID_IPreview2, &LIBID_PREVIEWLib>::Invoke(dispidMember, riid, lcid, wFlags, pdispparams, pvarResult, pexcepinfo, puArgErr);
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::SetWallpaper(BSTR bstrPath)
|
||
|
|
{
|
||
|
|
return m_cwndPreview.SetWallpaper(bstrPath);
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::SaveAs(BSTR bstrPath)
|
||
|
|
{
|
||
|
|
return m_cwndPreview.SaveAs(bstrPath);
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL CPreview::IsHostLocalZone(DWORD dwFlags, HRESULT * phr)
|
||
|
|
{
|
||
|
|
HRESULT hr = E_ACCESSDENIED;
|
||
|
|
CComPtr<IDefViewSafety> spDefViewSafety;
|
||
|
|
if (SUCCEEDED(IUnknown_QueryService(m_spClientSite, SID_SFolderView,
|
||
|
|
IID_PPV_ARG(IDefViewSafety, &spDefViewSafety))))
|
||
|
|
{
|
||
|
|
hr = spDefViewSafety->IsSafePage();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (phr)
|
||
|
|
{
|
||
|
|
*phr = hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (S_OK == hr) ? TRUE : FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP CPreview::_ProcessSelection(void)
|
||
|
|
{
|
||
|
|
if (_pfv)
|
||
|
|
{
|
||
|
|
int iItem;
|
||
|
|
if (S_OK == _pfv->GetFocusedItem(&iItem))
|
||
|
|
{
|
||
|
|
LPITEMIDLIST pidlFile;
|
||
|
|
if (SUCCEEDED(_pfv->Item(iItem, &pidlFile)))
|
||
|
|
{
|
||
|
|
IShellFolder *psf;
|
||
|
|
if (SUCCEEDED(_pfv->GetFolder(IID_PPV_ARG(IShellFolder, &psf))))
|
||
|
|
{
|
||
|
|
TCHAR szPath[MAX_PATH];
|
||
|
|
|
||
|
|
if (SUCCEEDED(DisplayNameOf(psf, pidlFile, SHGDN_FORPARSING, szPath, ARRAYSIZE(szPath))))
|
||
|
|
{
|
||
|
|
ShowFile(szPath, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
psf->Release();
|
||
|
|
}
|
||
|
|
|
||
|
|
ILFree(pidlFile);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ShowFile(NULL, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|