reactos/modules/rosapps/applications/explorer-old/utility/dragdropimpl.h

268 lines
7.4 KiB
C++

// IDataObjectImpl.h: interface for the CIDataObjectImpl class.
/**************************************************************************
THIS CODE AND INFORMATION IS PROVIDED 'AS IS' WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
Author: Leon Finker 11/2000
Modifications: replaced ATL by STL, Martin Fuchs 7/2003
**************************************************************************/
#include <vector>
using std::vector;
typedef vector<FORMATETC> FormatArray;
/// structure containing information for one format of EnumFormatEtcImpl
struct DataStorage {
FORMATETC* _format;
STGMEDIUM* _medium;
};
typedef vector<DataStorage> StorageArray;
/// implementation of IEnumFORMATETC interface
class EnumFormatEtcImpl
: public IComSrvBase<IEnumFORMATETC, EnumFormatEtcImpl>, public SimpleComObject
{
typedef IComSrvBase<IEnumFORMATETC, EnumFormatEtcImpl> super;
private:
ULONG m_cRefCount;
FormatArray m_pFmtEtc;
size_t m_iCur;
public:
EnumFormatEtcImpl(const FormatArray& ArrFE);
EnumFormatEtcImpl(const StorageArray& ArrFE);
virtual ~EnumFormatEtcImpl() {}
//IEnumFORMATETC members
virtual HRESULT STDMETHODCALLTYPE Next(ULONG, LPFORMATETC, ULONG*);
virtual HRESULT STDMETHODCALLTYPE Skip(ULONG);
virtual HRESULT STDMETHODCALLTYPE Reset(void);
virtual HRESULT STDMETHODCALLTYPE Clone(IEnumFORMATETC**);
};
/// implementation of IDropSource interface
class IDropSourceImpl
: public IComSrvBase<IDropSource, IDropSourceImpl>, public SimpleComObject
{
typedef IComSrvBase<IDropSource, IDropSourceImpl> super;
long m_cRefCount;
public:
bool m_bDropped;
IDropSourceImpl()
: super(IID_IDropSource),
m_cRefCount(0),
m_bDropped(false)
{
}
virtual ~IDropSourceImpl() {}
//IDropSource
virtual HRESULT STDMETHODCALLTYPE QueryContinueDrag(
/* [in] */ BOOL fEscapePressed,
/* [in] */ DWORD grfKeyState);
virtual HRESULT STDMETHODCALLTYPE GiveFeedback(
/* [in] */ DWORD dwEffect);
};
/// implementation of IDataObject interface
class IDataObjectImpl
: public IComSrvBase<IDataObject, IDataObjectImpl>, public SimpleComObject
//public IAsyncOperation
{
typedef IComSrvBase<IDataObject, IDataObjectImpl> super;
IDropSourceImpl* m_pDropSource;
long m_cRefCount;
StorageArray _storage;
public:
IDataObjectImpl(IDropSourceImpl* pDropSource);
virtual ~IDataObjectImpl();
void CopyMedium(STGMEDIUM* pMedDest, STGMEDIUM* pMedSrc, FORMATETC* pFmtSrc);
//IDataObject
virtual /* [local] */ HRESULT STDMETHODCALLTYPE GetData(
/* [unique][in] */ FORMATETC __RPC_FAR *pformatetcIn,
/* [out] */ STGMEDIUM __RPC_FAR *pmedium);
virtual /* [local] */ HRESULT STDMETHODCALLTYPE GetDataHere(
/* [unique][in] */ FORMATETC __RPC_FAR *pformatetc,
/* [out][in] */ STGMEDIUM __RPC_FAR *pmedium);
virtual HRESULT STDMETHODCALLTYPE QueryGetData(
/* [unique][in] */ FORMATETC __RPC_FAR *pformatetc);
virtual HRESULT STDMETHODCALLTYPE GetCanonicalFormatEtc(
/* [unique][in] */ FORMATETC __RPC_FAR *pformatectIn,
/* [out] */ FORMATETC __RPC_FAR *pformatetcOut);
virtual /* [local] */ HRESULT STDMETHODCALLTYPE SetData(
/* [unique][in] */ FORMATETC __RPC_FAR *pformatetc,
/* [unique][in] */ STGMEDIUM __RPC_FAR *pmedium,
/* [in] */ BOOL fRelease);
virtual HRESULT STDMETHODCALLTYPE EnumFormatEtc(
/* [in] */ DWORD dwDirection,
/* [out] */ IEnumFORMATETC __RPC_FAR *__RPC_FAR *ppenumFormatEtc);
virtual HRESULT STDMETHODCALLTYPE DAdvise(
/* [in] */ FORMATETC __RPC_FAR *pformatetc,
/* [in] */ DWORD advf,
/* [unique][in] */ IAdviseSink __RPC_FAR *pAdvSink,
/* [out] */ DWORD __RPC_FAR *pdwConnection);
virtual HRESULT STDMETHODCALLTYPE DUnadvise(
/* [in] */ DWORD dwConnection);
virtual HRESULT STDMETHODCALLTYPE EnumDAdvise(
/* [out] */ IEnumSTATDATA __RPC_FAR *__RPC_FAR *ppenumAdvise);
//IAsyncOperation
//virtual HRESULT STDMETHODCALLTYPE SetAsyncMode(
// /* [in] */ BOOL fDoOpAsync)
//{
// return E_NOTIMPL;
//}
//
//virtual HRESULT STDMETHODCALLTYPE GetAsyncMode(
// /* [out] */ BOOL __RPC_FAR *pfIsOpAsync)
//{
// return E_NOTIMPL;
//}
//
//virtual HRESULT STDMETHODCALLTYPE StartOperation(
// /* [optional][unique][in] */ IBindCtx __RPC_FAR *pbcReserved)
//{
// return E_NOTIMPL;
//}
//
//virtual HRESULT STDMETHODCALLTYPE InOperation(
// /* [out] */ BOOL __RPC_FAR *pfInAsyncOp)
//{
// return E_NOTIMPL;
//}
//
//virtual HRESULT STDMETHODCALLTYPE EndOperation(
// /* [in] */ HRESULT hResult,
// /* [unique][in] */ IBindCtx __RPC_FAR *pbcReserved,
// /* [in] */ DWORD dwEffects)
//{
// return E_NOTIMPL;
//}*/
};
/// implementation of IDropTarget interface
class IDropTargetImpl : public IDropTarget
{
DWORD m_cRefCount;
bool m_bAllowDrop;
IDropTargetHelper* m_pDropTargetHelper;
FormatArray m_formatetc;
FORMATETC* m_pSupportedFrmt;
protected:
HWND m_hTargetWnd;
public:
IDropTargetImpl(HWND m_hTargetWnd);
virtual ~IDropTargetImpl();
void AddSuportedFormat(FORMATETC& ftetc) {m_formatetc.push_back(ftetc);}
//return values: true - release the medium. false - don't release the medium
virtual bool OnDrop(FORMATETC* pFmtEtc, STGMEDIUM& medium, DWORD *pdwEffect) = 0;
virtual HRESULT STDMETHODCALLTYPE QueryInterface(
/* [in] */ REFIID riid,
/* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);
virtual ULONG STDMETHODCALLTYPE AddRef() {return ++m_cRefCount;}
virtual ULONG STDMETHODCALLTYPE Release();
bool QueryDrop(DWORD grfKeyState, LPDWORD pdwEffect);
virtual HRESULT STDMETHODCALLTYPE DragEnter(
/* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
/* [in] */ DWORD grfKeyState,
/* [in] */ POINTL pt,
/* [out][in] */ DWORD __RPC_FAR *pdwEffect);
virtual HRESULT STDMETHODCALLTYPE DragOver(
/* [in] */ DWORD grfKeyState,
/* [in] */ POINTL pt,
/* [out][in] */ DWORD __RPC_FAR *pdwEffect);
virtual HRESULT STDMETHODCALLTYPE DragLeave();
virtual HRESULT STDMETHODCALLTYPE Drop(
/* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
/* [in] */ DWORD grfKeyState,
/* [in] */ POINTL pt,
/* [out][in] */ DWORD __RPC_FAR *pdwEffect);
};
/// implementation of IDragSourceHelper interface
class DragSourceHelper
{
IDragSourceHelper* pDragSourceHelper;
public:
DragSourceHelper()
{
if (FAILED(CoCreateInstance(CLSID_DragDropHelper,
NULL,
CLSCTX_INPROC_SERVER,
IID_IDragSourceHelper,
(void**)&pDragSourceHelper)))
pDragSourceHelper = NULL;
}
virtual ~DragSourceHelper()
{
if (pDragSourceHelper != NULL)
{
pDragSourceHelper->Release();
pDragSourceHelper=NULL;
}
}
// IDragSourceHelper
HRESULT InitializeFromBitmap(HBITMAP hBitmap,
POINT& pt, // cursor position in client coords of the window
RECT& rc, // selected item's bounding rect
IDataObject* pDataObject,
COLORREF crColorKey=GetSysColor(COLOR_WINDOW)// color of the window used for transparent effect.
)
{
if (pDragSourceHelper == NULL)
return E_FAIL;
SHDRAGIMAGE di;
BITMAP bm;
GetObject(hBitmap, sizeof(bm), &bm);
di.sizeDragImage.cx = bm.bmWidth;
di.sizeDragImage.cy = bm.bmHeight;
di.hbmpDragImage = hBitmap;
di.crColorKey = crColorKey;
di.ptOffset.x = pt.x - rc.left;
di.ptOffset.y = pt.y - rc.top;
return pDragSourceHelper->InitializeFromBitmap(&di, pDataObject);
}
HRESULT InitializeFromWindow(HWND hwnd, POINT& pt,IDataObject* pDataObject)
{
if (pDragSourceHelper == NULL)
return E_FAIL;
return pDragSourceHelper->InitializeFromWindow(hwnd, &pt, pDataObject);
}
};