cmdtarg.cpp

vc6.0完整版

/////////////////////////////////////////////////////////////////////////////
// Root of event sink maps

#ifndef _AFX_NO_OCC_SUPPORT

UINT CCmdTarget::_eventsinkEntryCount = (UINT)-1;

const AFX_EVENTSINKMAP CCmdTarget::eventsinkMap =
{
#ifdef _AFXDLL
	&CCmdTarget::_GetBaseEventSinkMap,
#else
	NULL,
#endif
	&CCmdTarget::_eventsinkEntries[0],
	&CCmdTarget::_eventsinkEntryCount
};

#ifdef _AFXDLL
const AFX_EVENTSINKMAP* CCmdTarget::_GetBaseEventSinkMap()
{
	return NULL;
}
#endif

const AFX_EVENTSINKMAP* CCmdTarget::GetEventSinkMap() const
{
	return &CCmdTarget::eventsinkMap;
}

const AFX_EVENTSINKMAP_ENTRY CCmdTarget::_eventsinkEntries[] =
{
	{ NULL, -1, NULL, 0, (AFX_PMSG)NULL, (AFX_PMSG)NULL, (size_t)-1,
	  afxDispCustom, (UINT)-1, (UINT)-1 }
	// nothing here
};

#endif //!_AFX_NO_OCC_SUPPORT

/////////////////////////////////////////////////////////////////////////////
// Root of interface maps

#ifndef _AFX_NO_OLE_SUPPORT

#ifdef _AFXDLL
const AFX_INTERFACEMAP* CCmdTarget::_GetBaseInterfaceMap()
{
	return NULL;
}
#endif

const AFX_INTERFACEMAP* CCmdTarget::GetInterfaceMap() const
{
	return &CCmdTarget::interfaceMap;
}

const AFX_INTERFACEMAP CCmdTarget::interfaceMap =
{
#ifdef _AFXDLL
	&CCmdTarget::_GetBaseInterfaceMap,
#else
	NULL,
#endif
	&CCmdTarget::_interfaceEntries[0]
};

const AFX_INTERFACEMAP_ENTRY CCmdTarget::_interfaceEntries[] =
{
#ifndef _AFX_NO_OLE_SUPPORT
	INTERFACE_PART(CCmdTarget, IID_IDispatch, Dispatch)
#endif
	{ NULL, (size_t)-1 }    // end of entries
};

void CCmdTarget::OnFinalRelease()
{
#ifndef _AFX_NO_OLE_SUPPORT
	AfxLockGlobals(CRIT_TYPELIBCACHE);

	// release the typelib cache, if any
	CTypeLibCache* pTypeLibCache = GetTypeLibCache();
	if (pTypeLibCache != NULL)
		pTypeLibCache->Unlock();

	AfxUnlockGlobals(CRIT_TYPELIBCACHE);
#endif

	delete this;
}

BOOL CCmdTarget::OnCreateAggregates()
{
	return TRUE;
}

LPUNKNOWN CCmdTarget::GetInterfaceHook(const void*)
{
	return NULL;
}

#endif //!_AFX_NO_OLE_SUPPORT

/////////////////////////////////////////////////////////////////////////////
// Root of connection maps

#ifndef _AFX_NO_OLE_SUPPORT

#ifdef _AFXDLL
const AFX_CONNECTIONMAP* CCmdTarget::_GetBaseConnectionMap()
{
	return NULL;
}
#endif

const AFX_CONNECTIONMAP* CCmdTarget::GetConnectionMap() const
{
	return &CCmdTarget::connectionMap;
}

const AFX_CONNECTIONMAP CCmdTarget::connectionMap =
{
#ifdef _AFXDLL
	&CCmdTarget::_GetBaseConnectionMap,
#else
	NULL,
#endif
	&CCmdTarget::_connectionEntries[0]
};

const AFX_CONNECTIONMAP_ENTRY CCmdTarget::_connectionEntries[] =
{
	{ NULL, (size_t)-1 }    // end of entries
};

LPCONNECTIONPOINT CCmdTarget::GetConnectionHook(const IID&)
{
	return NULL;
}

BOOL CCmdTarget::GetExtraConnectionPoints(CPtrArray*)
{
	return FALSE;
}

#endif //!_AFX_NO_OLE_SUPPORT

/////////////////////////////////////////////////////////////////////////////
// Root of command target maps

#ifndef _AFX_NO_DOCOBJECT_SUPPORT

#ifdef _AFXDLL
const AFX_OLECMDMAP* CCmdTarget::_GetBaseCommandMap()
{
	return NULL;
}
#endif

const AFX_OLECMDMAP CCmdTarget::commandMap =
{
#ifdef _AFXDLL
	&CCmdTarget::_GetBaseCommandMap,
#else
	NULL,
#endif
	&CCmdTarget::_commandEntries[0]
};

const AFX_OLECMDMAP_ENTRY CCmdTarget::_commandEntries[] =
{
	{ NULL, 0, 0 }    // end of entries
};

const AFX_OLECMDMAP* CCmdTarget::GetCommandMap() const
{
	return &CCmdTarget::commandMap;
}

#endif //!_AFX_NO_DOCOBJECT_SUPPORT

/////////////////////////////////////////////////////////////////////////////
// Special access to view routing info

CView* CCmdTarget::GetRoutingView()
{
	return GetRoutingView_();
}

CFrameWnd* CCmdTarget::GetRoutingFrame()
{
	return GetRoutingFrame_();
}

/////////////////////////////////////////////////////////////////////////////
// CCmdUI - User Interface for a command

// CCmdUI is a protocol class for all command handler variants
//      CCmdUI is an implementation class for menus and general dialog
//        controls (usually buttons)

CCmdUI::CCmdUI()
{
	// zero out everything
	m_nID = m_nIndex = m_nIndexMax = 0;
	m_pMenu = m_pSubMenu = m_pParentMenu = NULL;
	m_pOther = NULL;
	m_bEnableChanged = m_bContinueRouting = FALSE;
}

// default CCmdUI implementation only works for Menu Items
void CCmdUI::Enable(BOOL bOn)
{
	if (m_pMenu != NULL)
	{
		if (m_pSubMenu != NULL)
			return; // don't change popup menus indirectly

		ASSERT(m_nIndex < m_nIndexMax);
		m_pMenu->EnableMenuItem(m_nIndex, MF_BYPOSITION |
			(bOn ? MF_ENABLED : (MF_DISABLED | MF_GRAYED)));
	}
	else
	{
		// enable/disable a control (i.e. child window)
		ASSERT(m_pOther != NULL);

		// if control has the focus, move the focus before disabling
		if (!bOn && (::GetFocus() == m_pOther->m_hWnd))
			m_pOther->GetParent()->GetNextDlgTabItem(m_pOther)->SetFocus();
		m_pOther->EnableWindow(bOn);
	}
	m_bEnableChanged = TRUE;
}

void CCmdUI::SetCheck(int nCheck)
{
	if (m_pMenu != NULL)
	{
		if (m_pSubMenu != NULL)
			return; // don't change popup menus indirectly

		// place checkmark next to menu item
		ASSERT(m_nIndex < m_nIndexMax);
		m_pMenu->CheckMenuItem(m_nIndex, MF_BYPOSITION |
			(nCheck ? MF_CHECKED : MF_UNCHECKED));
	}
	else
	{
		// we can only check buttons or controls acting like buttons
		ASSERT(m_pOther != NULL);
		if (m_pOther->SendMessage(WM_GETDLGCODE) & DLGC_BUTTON)
			m_pOther->SendMessage(BM_SETCHECK, nCheck);
		// otherwise ignore it
	}
}

AFX_STATIC void AFXAPI _AfxLoadDotBitmap(); // for swap tuning

void CCmdUI::SetRadio(BOOL bOn)
{
	SetCheck(bOn ? 1 : 0); // this default works for most things as well
	if (m_pMenu != NULL)
	{
		if (m_pSubMenu != NULL)
			return; // don't change popup menus indirectly

		// for menu item - use dot instead of checkmark
		ASSERT(m_nIndex < m_nIndexMax);

		if (afxData.hbmMenuDot == NULL)
			_AfxLoadDotBitmap();    // in INIT segment

		if (afxData.hbmMenuDot != NULL)
			SetMenuItemBitmaps(m_pMenu->m_hMenu, m_nIndex, MF_BYPOSITION,
				NULL, afxData.hbmMenuDot);
	}
}

void CCmdUI::SetText(LPCTSTR lpszText)
{
	ASSERT(lpszText != NULL);
	ASSERT(AfxIsValidString(lpszText));

	if (m_pMenu != NULL)
	{
		if (m_pSubMenu != NULL)
			return; // don't change popup menus indirectly

		// get current menu state so it doesn't change
		UINT nState = m_pMenu->GetMenuState(m_nIndex, MF_BYPOSITION);
		nState &= ~(MF_BITMAP|MF_OWNERDRAW|MF_SEPARATOR);

		// set menu text
		ASSERT(m_nIndex < m_nIndexMax);
		VERIFY(m_pMenu->ModifyMenu(m_nIndex, MF_BYPOSITION |
			MF_STRING | nState, m_nID, lpszText));
	}
	else
	{
		ASSERT(m_pOther != NULL);
		AfxSetWindowText(m_pOther->m_hWnd, lpszText);
	}
}

BOOL CCmdUI::DoUpdate(CCmdTarget* pTarget, BOOL bDisableIfNoHndler)
{
	ASSERT_VALID(pTarget);

	if (m_nID == 0 || LOWORD(m_nID) == 0xFFFF)
		return TRUE;     // ignore invalid IDs

	m_bEnableChanged = FALSE;
	BOOL bResult = pTarget->OnCmdMsg(m_nID, CN_UPDATE_COMMAND_UI, this, NULL);
	if (!bResult)
		ASSERT(!m_bEnableChanged); // not routed

	if (bDisableIfNoHndler && !m_bEnableChanged)
	{
		AFX_CMDHANDLERINFO info;
		info.pTarget = NULL;
		BOOL bHandler = pTarget->OnCmdMsg(m_nID, CN_COMMAND, this, &info);

#ifdef _DEBUG
		if ((afxTraceFlags & traceCmdRouting) && !bHandler)
			TRACE1("No handler for command ID 0x%04X, disabling it.\n", m_nID);
#endif
		// Enable or Disable based on whether there is a handler there
		Enable(bHandler);
	}
	return bResult;
}

/////////////////////////////////////////////////////////////////////////////
// Special init

#ifdef AFX_INIT_SEG
#pragma code_seg(AFX_INIT_SEG)
#endif

AFX_STATIC_DATA const BYTE _afxDot[] =
	{ 0x6, 0xF, 0xF, 0xF, 0x6 }; // simple byte bitmap, 1=> bit on
#define DOT_WIDTH   4
#define DOT_HEIGHT  5

AFX_STATIC void AFXAPI _AfxLoadDotBitmap()
{
	ASSERT(afxData.hbmMenuDot == NULL);
	// attempt to load special bitmap, else default to arrow
	CSize size = ::GetMenuCheckMarkDimensions();
	ASSERT(size.cx > 4 && size.cy > 5); // not too small please
	if (size.cx > 32)
		size.cx = 32;
	int iwRow = (size.cx + 15) >> 4;    // # of WORDs per raster line
	int nShift = (size.cx - DOT_WIDTH) / 2;     // # of bits to shift over
	nShift += ((iwRow * 16) - size.cx); // padding for word alignment
	if (nShift > 16 - DOT_WIDTH)
		nShift = 16 - DOT_WIDTH;    // maximum shift for 1 word

	if (size.cy > 32)
		size.cy = 32;

	// bitmap 2/4/4/4/2 pixels wide - centered (0 => black)
	BYTE rgbBitmap[32 * 2 * sizeof(WORD)];
	memset(rgbBitmap, 0xff, sizeof(rgbBitmap));

	BYTE* pbOut = &rgbBitmap[iwRow * sizeof(WORD) *
							((size.cy - (DOT_HEIGHT+1)) >> 1)];
	const BYTE* pbIn = _afxDot;
	for (int y = 0; y < DOT_HEIGHT; y++)
	{
		WORD w = (WORD)~(((DWORD)*pbIn++) << nShift);
		// bitmaps are always hi-lo
		pbOut[0] = HIBYTE(w);
		pbOut[1] = LOBYTE(w);
		pbOut += iwRow * sizeof(WORD);
	}

	afxData.hbmMenuDot = ::CreateBitmap(size.cx, size.cy, 1, 1,
			(LPVOID)&rgbBitmap);
	if (afxData.hbmMenuDot == NULL)
	{
		TRACE0("Warning: using system arrow bitmap instead of dot.\n");
		#define OBM_MNARROW         32739
		afxData.hbmMenuDot = ::LoadBitmap(NULL, MAKEINTRESOURCE(OBM_MNARROW));
	}
}

/////////////////////////////////////////////////////////////////////////////
// CCmdTarget diagnostics

#ifdef _DEBUG
void CCmdTarget::Dump(CDumpContext& dc) const
{
	CObject::Dump(dc);

#ifndef _AFX_NO_OLE_SUPPORT
	if (m_xDispatch.m_vtbl != 0)
	{
		dc << "with IDispatch (OLE Automation) capability\n";
		dc << "m_bResultExpected = " << m_bResultExpected << "\n";
	}
	if (m_xConnPtContainer.m_vtbl != 0)
	{
		dc << "with OLE Connection Point capability\n";
	}
	if (GetInterfaceMap() != &CCmdTarget::interfaceMap)
	{
		dc << "with OLE capability";
		dc << "\nm_dwRef = " << m_dwRef;
		dc << "\nm_pOuterUnknown = " << m_pOuterUnknown;
		if (m_xInnerUnknown != 0)
			dc << "\nwith aggregation capability";
		dc << "\n";
	}
#endif //!_AFX_NO_OLE_SUPPORT
}

void CCmdTarget::AssertValid() const
{
	CObject::AssertValid();
}
#endif

#ifdef AFX_INIT_SEG
#pragma code_seg(AFX_INIT_SEG)
#endif

IMPLEMENT_DYNAMIC(CCmdTarget, CObject)

/////////////////////////////////////////////////////////////////////////////