DOCUMENT.CPP
资源名称:MSDN_VC98.zip [点击查看]
上传用户:bangxh
上传日期:2007-01-31
资源大小:42235k
文件大小:16k
源码类别:
Windows编程
开发平台:
Visual C++
- /*
- * DOCUMENT.CPP
- * Cosmo Chapter 1
- *
- * Implementation of the CCosmoDoc derivation of CDocument as
- * well as an implementation of CPolylineAdviseSink.
- *
- * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved
- *
- * Kraig Brockschmidt, Microsoft
- * Internet : kraigb@microsoft.com
- * Compuserve: >INTERNET:kraigb@microsoft.com
- */
- #include "cosmo.h"
- /*
- * CCosmoDoc::CCosmoDoc
- * CCosmoDoc::~CCosmoDoc
- *
- * Constructor Parameters:
- * hInst HINSTANCE of the application.
- * pFR PCFrame of the frame object.
- * pAdv PCDocumentAdviseSink to notify on events
- */
- CCosmoDoc::CCosmoDoc(HINSTANCE hInst, PCFrame pFR
- , PCDocumentAdviseSink pAdv)
- : CDocument(hInst, pFR, pAdv)
- {
- m_pPL=NULL;
- m_pPLAdv=NULL;
- m_uPrevSize=SIZE_RESTORED;
- return;
- }
- CCosmoDoc::~CCosmoDoc(void)
- {
- //Clean up the allocations we did in Init
- if (NULL!=m_pPL)
- delete m_pPL;
- if (NULL!=m_pPLAdv)
- delete m_pPLAdv;
- return;
- }
- /*
- * CCosmoDoc::Init
- *
- * Purpose:
- * Initializes an already created document window. The client
- * actually creates the window for us, then passes that here for
- * further initialization.
- *
- * Parameters:
- * pDI PDOCUMENTINIT containing initialization
- * parameters.
- *
- * Return Value:
- * BOOL TRUE if the function succeeded, FALSE otherwise.
- */
- BOOL CCosmoDoc::Init(PDOCUMENTINIT pDI)
- {
- RECT rc;
- //Change the stringtable range to our customization.
- pDI->idsMin=IDS_DOCUMENTMIN;
- pDI->idsMax=IDS_DOCUMENTMAX;
- //Do default initialization
- if (!CDocument::Init(pDI))
- return FALSE;
- //Add the Polyline stuff we need.
- m_pPLAdv=new CPolylineAdviseSink(this);
- m_pPL =new CPolyline(m_hInst);
- //Attempt to create our contained Polyline.
- GetClientRect(m_hWnd, &rc);
- InflateRect(&rc, -8, -8);
- if (!m_pPL->Init(m_hWnd, &rc, WS_CHILD | WS_VISIBLE
- , ID_POLYLINE, m_pPLAdv))
- return FALSE;
- return TRUE;
- }
- /*
- * CCosmoDoc::FMessageHook
- *
- * Purpose:
- * Processes WM_SIZE for the document so we can resize
- * the Polyline.
- *
- * Parameters:
- * <WndProc Parameters>
- * pLRes LRESULT * in which to store the return
- * value for the message.
- *
- * Return Value:
- * BOOL TRUE to prevent further processing,
- * FALSE otherwise.
- */
- BOOL CCosmoDoc::FMessageHook(HWND hWnd, UINT iMsg, WPARAM wParam
- , LPARAM lParam, LRESULT *pLRes)
- {
- UINT dx, dy;
- RECT rc;
- *pLRes=0;
- if (WM_SIZE==iMsg)
- {
- //Don't effect the Polyline size to or from minimized state.
- if (SIZE_MINIMIZED!=wParam && SIZE_MINIMIZED !=m_uPrevSize)
- {
- //When we change size, resize any Polyline we hold.
- dx=LOWORD(lParam);
- dy=HIWORD(lParam);
- /*
- * If we are getting WM_SIZE in response to a Polyline
- * notification, then don't resize the Polyline window
- * again.
- */
- if (!m_fNoSize && NULL!=m_pPL)
- {
- //Resize the polyline to fit the new client
- SetRect(&rc, 8, 8, dx-8, dy-8);
- m_pPL->RectSet(&rc, FALSE);
- /*
- * We consider sizing something that makes the file
- * dirty, but not until we've finished the create
- * process, which is why we set fNoDirty to FALSE
- * in WM_CREATE since we get a WM_SIZE on the first
- * creation.
- */
- if (!m_fNoDirty)
- FDirtySet(TRUE);
- SetRect(&rc, 0, 0, dx, dy);
- if (NULL!=m_pAdv)
- m_pAdv->OnSizeChange(this, &rc);
- m_fNoDirty=FALSE;
- }
- }
- m_uPrevSize=wParam;
- }
- /*
- * We return FALSE even on WM_SIZE so we can let the default
- * procedure handle maximized MDI child windows appropriately.
- */
- return FALSE;
- }
- /*
- * CCosmoDoc::Clear
- *
- * Purpose:
- * Sets all contents in the document back to defaults with
- * no filename.
- *
- * Paramters:
- * None
- *
- * Return Value:
- * None
- */
- void CCosmoDoc::Clear(void)
- {
- //Completely reset the polyline
- m_pPL->New();
- CDocument::Clear();
- m_lVer=0;
- return;
- }
- /*
- * CCosmoDoc::Load
- *
- * Purpose:
- * Loads a given document without any user interface overwriting
- * the previous contents of the Polyline window. We do this by
- * opening the file and telling the Polyline to load itself from
- * that file.
- *
- * Parameters:
- * fChangeFile BOOL indicating if we're to update the window
- * title and the filename from using this file.
- * pszFile LPTSTR to the filename to load, NULL if the file
- * is new and untitled.
- *
- * Return Value:
- * UINT An error value from DOCERR_*
- */
- UINT CCosmoDoc::Load(BOOL fChangeFile, LPTSTR pszFile)
- {
- if (NULL==pszFile)
- {
- //For a new untitled document, just rename ourselves.
- Rename(NULL);
- m_lVer=VERSIONCURRENT;
- return DOCERR_NONE;
- }
- m_lVer=m_pPL->ReadFromFile(pszFile);
- if (POLYLINE_E_READFAILURE==m_lVer)
- return DOCERR_READFAILURE;
- if (POLYLINE_E_UNSUPPORTEDVERSION==m_lVer)
- return DOCERR_UNSUPPORTEDVERSION;
- if (fChangeFile)
- Rename(pszFile);
- //Importing a file makes things dirty
- FDirtySet(!fChangeFile);
- return DOCERR_NONE;
- }
- /*
- * CCosmoDoc::Save
- *
- * Purpose:
- * Writes the file to a known filename, requiring that the user has
- * previously used FileOpen or FileSaveAs to provide a filename.
- *
- * Parameters:
- * uType UINT indicating the type of file the user
- * requested to save in the File Save As dialog.
- * pszFile LPTSTR under which to save. If NULL, use the
- * current name.
- *
- * Return Value:
- * UINT An error value from DOCERR_*
- */
- UINT CCosmoDoc::Save(UINT uType, LPTSTR pszFile)
- {
- LONG lVer, lRet;
- UINT uTemp;
- BOOL fRename=TRUE;
- if (NULL==pszFile)
- {
- fRename=FALSE;
- pszFile=m_szFile;
- }
- /*
- * Type 1 is the current version, type 2 is version 1.0 of the
- * Polyline so we use this to send the right version to
- * CPolyline::WriteToFile.
- */
- switch (uType)
- {
- case 0: //From Save, use loaded version.
- lVer=m_lVer;
- break;
- case 1:
- lVer=VERSIONCURRENT;
- break;
- case 2:
- lVer=MAKELONG(0, 1); //1.0
- break;
- default:
- return DOCERR_UNSUPPORTEDVERSION;
- }
- /*
- * If the version the user wants to save is different from the
- * version that we loaded and m_lVer is not zero (new doc),
- * then inform the user of the version change and verify.
- */
- if (0!=m_lVer && m_lVer!=lVer)
- {
- TCHAR szMsg[128];
- wsprintf(szMsg, PSZ(IDS_VERSIONCHANGE)
- , (UINT)HIWORD(m_lVer), (UINT)LOWORD(m_lVer)
- , (UINT)HIWORD(lVer), (UINT)LOWORD(lVer));
- uTemp=MessageBox(m_hWnd, szMsg, PSZ(IDS_DOCUMENTCAPTION)
- , MB_YESNOCANCEL);
- if (IDCANCEL==uTemp)
- return DOCERR_CANCELLED;
- //If the user won't upgrade, revert to loaded version.
- if (IDNO==uTemp)
- lVer=m_lVer;
- }
- lRet=m_pPL->WriteToFile(pszFile, lVer);
- if (POLYLINE_E_NONE!=lRet)
- return DOCERR_WRITEFAILURE;
- //Saving makes us clean
- FDirtySet(FALSE);
- //Update the known version of this document.
- m_lVer=lVer;
- if (fRename)
- Rename(pszFile);
- return DOCERR_NONE;
- }
- /*
- * CCosmoDoc::Undo
- *
- * Purpose:
- * Reverses a previous action.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * None
- */
- void CCosmoDoc::Undo(void)
- {
- m_pPL->Undo();
- return;
- }
- /*
- * CCosmoDoc::Clip
- *
- * Purpose:
- * Places a private format, a metafile, and a bitmap of the display
- * on the clipboard, optionally implementing Cut by deleting the
- * data in the current window after rendering.
- *
- * Parameters:
- * hWndFrame HWND of the main window.
- * fCut BOOL indicating cut (TRUE) or copy (FALSE).
- *
- * Return Value:
- * BOOL TRUE if successful, FALSE otherwise.
- */
- BOOL CCosmoDoc::Clip(HWND hWndFrame, BOOL fCut)
- {
- BOOL fRet=TRUE;
- HGLOBAL hMem;
- UINT i;
- //This array is so we can loop over the formats we provide.
- static UINT rgcf[3]={0, CF_METAFILEPICT, CF_BITMAP};
- const UINT cFormats=3;
- if (!OpenClipboard(hWndFrame))
- return FALSE;
- //Clean out whatever junk is in the clipboard.
- EmptyClipboard();
- rgcf[0]=m_cf;
- for (i=0; i < cFormats; i++)
- {
- //Copy private data first.
- hMem=RenderFormat(rgcf[i]);
- if (NULL!=hMem)
- SetClipboardData(rgcf[i], hMem);
- else
- fRet &=FALSE;
- }
- //Free clipboard ownership.
- CloseClipboard();
- //Delete our current data if "cut" succeeded.
- if (fRet && fCut)
- {
- m_pPL->New();
- FDirtySet(TRUE);
- }
- return fRet;
- }
- /*
- * CCosmoDoc::RenderFormat
- *
- * Purpose:
- * Renders a specific clipboard format into global memory.
- *
- * Parameters:
- * cf UINT format to render.
- *
- * Return Value:
- * HGLOBAL Global memory handle containing the data.
- */
- HGLOBAL CCosmoDoc::RenderFormat(UINT cf)
- {
- HGLOBAL hMem;
- if (cf==m_cf)
- {
- m_pPL->DataGetMem(VERSIONCURRENT, &hMem);
- return hMem;
- }
- switch (cf)
- {
- case CF_METAFILEPICT:
- return m_pPL->RenderMetafilePict();
- case CF_BITMAP:
- return (HGLOBAL)m_pPL->RenderBitmap();
- }
- return NULL;
- }
- /*
- * CCosmoDoc::FQueryPaste
- *
- * Purpose:
- * Determines if we can paste data from the clipboard.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * BOOL TRUE if data is available, FALSE otherwise.
- */
- BOOL CCosmoDoc::FQueryPaste(void)
- {
- return IsClipboardFormatAvailable(m_cf);
- }
- /*
- * CCosmoDoc::Paste
- *
- * Purpose:
- * Retrieves the private data format from the clipboard and sets it
- * to the current figure in the editor window.
- *
- * Note that if this function is called, then the clipboard format
- * is available because the Paste menu item is only enabled if the
- * format is present.
- *
- * Parameters:
- * hWndFrame HWND of the main window.
- *
- * Return Value:
- * BOOL TRUE if successful, FALSE otherwise.
- */
- BOOL CCosmoDoc::Paste(HWND hWndFrame)
- {
- HGLOBAL hMem;
- PPOLYLINEDATA ppl;
- BOOL fRet=FALSE;
- if (!OpenClipboard(hWndFrame))
- return FALSE;
- hMem=GetClipboardData(m_cf);
- if (NULL!=hMem)
- {
- ppl=(PPOLYLINEDATA)GlobalLock(hMem);
- //TRUE in wParam to cause PLN_SIZECHANGE notification
- m_pPL->DataSet(ppl, FALSE, TRUE);
- GlobalUnlock(hMem);
- FDirtySet(TRUE);
- fRet=TRUE;
- }
- CloseClipboard();
- return fRet;
- }
- /*
- * CCosmoDoc::ColorSet
- *
- * Purpose:
- * Changes a color used in our contained Polyline.
- *
- * Parameters:
- * iColor UINT index of the color to change.
- * cr COLORREF new color.
- *
- * Return Value:
- * COLORREF Previous color for the given index.
- */
- COLORREF CCosmoDoc::ColorSet(UINT iColor, COLORREF cr)
- {
- return m_pPL->ColorSet(iColor, cr);
- }
- /*
- * CCosmoDoc::ColorGet
- *
- * Purpose:
- * Retrieves a color currently in use in the Polyline.
- *
- * Parameters:
- * iColor UINT index of the color to retrieve.
- *
- * Return Value:
- * COLORREF Current color for the given index.
- */
- COLORREF CCosmoDoc::ColorGet(UINT iColor)
- {
- return m_pPL->ColorGet(iColor);
- }
- /*
- * CCosmoDoc::LineStyleSet
- *
- * Purpose:
- * Changes the line style currently used in the Polyline
- *
- * Parameters:
- * iStyle UINT index of the new line style to use.
- *
- * Return Value:
- * UINT Previous line style.
- */
- UINT CCosmoDoc::LineStyleSet(UINT iStyle)
- {
- return m_pPL->LineStyleSet(iStyle);
- }
- /*
- * CCosmoDoc::LineStyleGet
- *
- * Purpose:
- * Retrieves the line style currently used in the Polyline
- *
- * Parameters:
- * None
- *
- * Return Value:
- * UINT Current line style.
- */
- UINT CCosmoDoc::LineStyleGet(void)
- {
- if (NULL==m_pPL) //m_pPL might not be valid yet
- return 0L;
- return m_pPL->LineStyleGet();
- }
- /*
- * CPolylineAdviseSink::CPolylineAdviseSink
- * CPolylineAdviseSink::~CPolylineAdviseSink
- *
- * Constructor Parameters:
- * pv LPVOID to store in this object
- */
- CPolylineAdviseSink::CPolylineAdviseSink(LPVOID pv)
- {
- m_pv=pv;
- return;
- }
- CPolylineAdviseSink::~CPolylineAdviseSink(void)
- {
- return;
- }
- /*
- * CPolylineAdviseSink::OnPointChange
- *
- * Purpose:
- * Informs the document that the polyline added or removed a point.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * None
- */
- void CPolylineAdviseSink::OnPointChange(void)
- {
- PCDocument pDoc=(PCDocument)m_pv;
- pDoc->FDirtySet(TRUE);
- return;
- }
- /*
- * CPolylineAdviseSink::OnSizeChange
- *
- * Purpose:
- * Informs the document that the polyline changed size.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * None
- */
- void CPolylineAdviseSink::OnSizeChange(void)
- {
- PCCosmoDoc pDoc=(PCCosmoDoc)m_pv;
- RECT rc;
- DWORD dwStyle;
- /*
- * Polyline window is informing us that it changed size in
- * response to setting it's data. Therefore we have to
- * size ourselves accordingly but without moving the screen
- * position of the polyline window.
- */
- pDoc->m_fNoSize=TRUE;
- //Set the document window size.
- GetWindowRect(pDoc->m_pPL->Window(), &rc);
- InflateRect(&rc, 8, 8);
- //Adjust for a window sans menu
- dwStyle=GetWindowLong(pDoc->m_hWnd, GWL_STYLE);
- AdjustWindowRect(&rc, dwStyle, FALSE);
- SetWindowPos(pDoc->m_hWnd, NULL, 0, 0, rc.right-rc.left
- , rc.bottom-rc.top, SWP_NOMOVE | SWP_NOZORDER);
- if (NULL!=pDoc->m_pAdv)
- pDoc->m_pAdv->OnSizeChange(pDoc, &rc);
- pDoc->m_fNoSize=FALSE;
- pDoc->FDirtySet(TRUE);
- return;
- }
- /*
- * CPolylineAdviseSink::OnDataChange
- *
- * Purpose:
- * Informs the document that the polyline data changed.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * None
- */
- void CPolylineAdviseSink::OnDataChange(void)
- {
- PCCosmoDoc pDoc=(PCCosmoDoc)m_pv;
- if (NULL!=pDoc->m_pAdv)
- pDoc->m_pAdv->OnDataChange(pDoc);
- pDoc->FDirtySet(TRUE);
- return;
- }
- /*
- * CPolylineAdviseSink::OnColorChange
- *
- * Purpose:
- * Informs the document that the polyline data changed a color.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * None
- */
- void CPolylineAdviseSink::OnColorChange(void)
- {
- PCCosmoDoc pDoc=(PCCosmoDoc)m_pv;
- pDoc->FDirtySet(TRUE);
- return;
- }
- /*
- * CPolylineAdviseSink::OnLineStyleChange
- *
- * Purpose:
- * Informs the document that the polyline changed its line style.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * None
- */
- void CPolylineAdviseSink::OnLineStyleChange(void)
- {
- PCCosmoDoc pDoc=(PCCosmoDoc)m_pv;
- pDoc->FDirtySet(TRUE);
- return;
- }