// Feel free to use this code in your own applications. // The Author does not guarantee anything about this code. // Author : Yves Maurer // FormattedTextDraw.h : Declaration of the CFormattedTextDraw #ifndef __FORMATTEDTEXTDRAW_H_ #define __FORMATTEDTEXTDRAW_H_ #ifndef LY_PER_INCH #define LY_PER_INCH 1440 #define HOST_BORDER 0 #endif struct COOKIE { bool isUnicode; union { char *ansi; WCHAR *unicode; }; size_t cbSize, cbCount; }; extern HRESULT(WINAPI *MyCreateTextServices)(IUnknown *punkOuter, ITextHost *pITextHost, IUnknown **ppUnk); ///////////////////////////////////////////////////////////////////////////// // IFormatttedTextDraw interface IFormattedTextDraw { public: virtual ~IFormattedTextDraw() {}; virtual HRESULT get_NaturalSize(void *hdcDraw, long *Width, long *pVal) = 0; virtual HRESULT Create() = 0; virtual HRESULT Draw(void *hdcDraw, RECT *prc) = 0; virtual HRESULT putRTFTextA(char *newVal) = 0; virtual HRESULT putRTFTextW(WCHAR *newVal) = 0; virtual HRESULT putTextA(char *newVal) = 0; virtual HRESULT putTextW(WCHAR *newVal) = 0; virtual ITextServices *getTextService() = 0; virtual ITextDocument *getTextDocument() = 0; virtual void setParentWnd(HWND hwnd, RECT rect) = 0; // COM-like functions virtual ULONG STDMETHODCALLTYPE AddRef(void) = 0; virtual ULONG STDMETHODCALLTYPE Release(void) = 0; }; ///////////////////////////////////////////////////////////////////////////// // CFormattedTextDraw class CFormattedTextDraw : public ITextHost, public IFormattedTextDraw { public: CFormattedTextDraw() { HDC hdcScreen; hdcScreen = GetDC(NULL); nPixelsPerInchX = GetDeviceCaps(hdcScreen, LOGPIXELSX); nPixelsPerInchY = GetDeviceCaps(hdcScreen, LOGPIXELSY); ReleaseDC(NULL, hdcScreen); SetRectEmpty(&m_rcClient); SetRectEmpty(&m_rcViewInset); m_pCF = (CHARFORMAT2W*)malloc(sizeof(CHARFORMAT2W)); InitDefaultCharFormat(); InitDefaultParaFormat(); m_spTextServices = NULL; m_spTextDocument = NULL; m_dwPropertyBits = TXTBIT_RICHTEXT | TXTBIT_MULTILINE | TXTBIT_WORDWRAP | TXTBIT_USECURRENTBKG; m_dwScrollbar = 0; m_dwMaxLength = INFINITE; } ~CFormattedTextDraw() { free(m_pCF); if (m_spTextServices != NULL) m_spTextServices->Release(); if (m_spTextDocument != NULL) m_spTextDocument->Release(); } // Minimal COM functionality HRESULT STDMETHODCALLTYPE QueryInterface( /* [in] */ REFIID, /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject) { *ppvObject = NULL; return S_FALSE; } ULONG STDMETHODCALLTYPE AddRef(void) { return 0; } ULONG STDMETHODCALLTYPE Release(void) { return 0; } // IFormattedTextDraw public: HRESULT get_NaturalSize(void *hdcDraw, long *Width, long *pVal); HRESULT Create(); HRESULT Draw(void *hdcDraw, RECT *prc); HRESULT putRTFTextA(char *newVal); HRESULT putRTFTextW(WCHAR *newVal); HRESULT putTextA(char *newVal); HRESULT putTextW(WCHAR *newVal); ITextServices *getTextService() { return m_spTextServices; }; ITextDocument *getTextDocument() { return m_spTextDocument; }; virtual void setParentWnd(HWND hwnd, RECT rect) { m_hwndParent = hwnd; m_rcClient = rect; } // ITextHost HDC TxGetDC(); INT TxReleaseDC(HDC hdc); BOOL TxShowScrollBar(INT fnBar, BOOL fShow); BOOL TxEnableScrollBar(INT fuSBFlags, INT fuArrowflags); BOOL TxSetScrollRange(INT fnBar, LONG nMinPos, INT nMaxPos, BOOL fRedraw); BOOL TxSetScrollPos(INT fnBar, INT nPos, BOOL fRedraw); void TxInvalidateRect(LPCRECT prc, BOOL fMode); void TxViewChange(BOOL fUpdate); BOOL TxCreateCaret(HBITMAP hbmp, INT xWidth, INT yHeight); BOOL TxShowCaret(BOOL fShow); BOOL TxSetCaretPos(INT x, INT y); BOOL TxSetTimer(UINT idTimer, UINT uTimeout); void TxKillTimer(UINT idTimer); void TxScrollWindowEx(INT dx, INT dy, LPCRECT lprcScroll, LPCRECT lprcClip, HRGN hrgnUpdate, LPRECT lprcUpdate, UINT fuScroll); void TxSetCapture(BOOL fCapture); void TxSetFocus(); void TxSetCursor(HCURSOR hcur, BOOL fText); BOOL TxScreenToClient(LPPOINT lppt); BOOL TxClientToScreen(LPPOINT lppt); HRESULT TxActivate(LONG * plOldState); HRESULT TxDeactivate(LONG lNewState); HRESULT TxGetClientRect(LPRECT prc); HRESULT TxGetViewInset(LPRECT prc); HRESULT TxGetCharFormat(const CHARFORMATW **ppCF); HRESULT TxGetParaFormat(const PARAFORMAT **ppPF); COLORREF TxGetSysColor(int nIndex); HRESULT TxGetBackStyle(TXTBACKSTYLE *pstyle); HRESULT TxGetMaxLength(DWORD *plength); HRESULT TxGetScrollBars(DWORD *pdwScrollBar); HRESULT TxGetPasswordChar(wchar_t *pch); HRESULT TxGetAcceleratorPos(LONG *pcp); HRESULT TxGetExtent(LPSIZEL lpExtent); HRESULT OnTxCharFormatChange(const CHARFORMATW * pcf); HRESULT OnTxParaFormatChange(const PARAFORMAT * ppf); HRESULT TxGetPropertyBits(DWORD dwMask, DWORD *pdwBits); HRESULT TxNotify(DWORD iNotify, void *pv); HIMC TxImmGetContext(); void TxImmReleaseContext(HIMC himc); HRESULT TxGetSelectionBarWidth(LONG *lSelBarWidth); // Custom functions HRESULT CharFormatFromHFONT(CHARFORMAT2W* pCF, HFONT hFont); HRESULT InitDefaultCharFormat(); HRESULT InitDefaultParaFormat(); HRESULT CreateTextServicesObject(); // Variables HWND m_hwndParent; RECT m_rcClient; // Client Rect RECT m_rcViewInset; // view rect inset SIZEL m_sizelExtent; // Extent array int nPixelsPerInchX; // Pixels per logical inch along width int nPixelsPerInchY; // Pixels per logical inch along height CHARFORMAT2W *m_pCF; PARAFORMAT2 m_PF; DWORD m_dwScrollbar; // Scroll bar style DWORD m_dwPropertyBits; // Property bits DWORD m_dwMaxLength; COOKIE m_editCookie; ITextServices *m_spTextServices; ITextDocument *m_spTextDocument; }; #endif //__FORMATTEDTEXTDRAW_H_