134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
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/*--------------------------------------------------------------------------*
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*
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* Microsoft Windows
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* Copyright (C) Microsoft Corporation, 1992 - 1999
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*
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* File: fontlink.h
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*
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* Contents: Interface file for CFontLinker
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*
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* History: 17-Aug-98 jeffro Created
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*
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*--------------------------------------------------------------------------*/
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#ifndef FONTLINK_H
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#define FONTLINK_H
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#pragma once
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#include <string>
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#include <mlang.h>
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#include <comdef.h>
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HFONT GetFontFromDC (HDC hdc);
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class CRichText;
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class CFontLinker
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{
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public:
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CFontLinker ();
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virtual ~CFontLinker ();
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LRESULT OnCustomDraw (NMCUSTOMDRAW* pnmcd);
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void ReleaseFonts ();
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bool ComposeRichText (CRichText& rt);
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IMultiLanguage* GetMultiLang ();
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IMLangFontLink* GetFontLink ();
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virtual bool IsAnyItemLocalizable () const
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{ return (true); }
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virtual bool IsItemLocalizable (NMCUSTOMDRAW* pnmcd) const
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{ return (true); }
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virtual UINT GetDrawTextFlags () const
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{ return (DT_LEFT | DT_VCENTER | DT_END_ELLIPSIS | DT_NOPREFIX | DT_SINGLELINE); }
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virtual std::wstring GetItemText (NMCUSTOMDRAW* pnmcd) const
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{ return (L""); }
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private:
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LRESULT OnCustomDraw_PrePaint (NMCUSTOMDRAW* pnmcd);
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LRESULT OnCustomDraw_PostPaint (NMCUSTOMDRAW* pnmcd);
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LRESULT OnCustomDraw_ItemPrePaint (NMCUSTOMDRAW* pnmcd);
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bool GetFontCodePages (HDC hdc, HFONT hFont, DWORD& dwFontCodePages);
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typedef std::set<HFONT> FontSet;
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typedef std::map<HFONT, DWORD> FontToCodePagesMap;
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FontSet m_FontsToRelease;
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FontToCodePagesMap m_CodePages;
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IMultiLanguagePtr m_spMultiLang;
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IMLangFontLinkPtr m_spFontLink;
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UINT m_cPendingPostPaints;
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struct FontReleaser : public std::unary_function<HFONT, HRESULT>
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{
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public:
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FontReleaser (IMLangFontLink* pFontLink) : m_spFontLink (pFontLink) {}
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HRESULT operator() (HFONT hFont)
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{
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ASSERT (m_spFontLink != NULL);
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return (m_spFontLink->ReleaseFont (hFont));
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}
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private:
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IMLangFontLinkPtr const m_spFontLink;
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};
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};
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struct TextSegmentFontInfo
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{
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HFONT hFont;
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long cch;
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};
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class CRichText
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{
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friend class CFontLinker;
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public:
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CRichText (HDC hdc, std::wstring strText)
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: m_hdc (hdc),
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m_strText (strText),
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m_hDefaultFont (GetFontFromDC (hdc))
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{}
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~CRichText ()
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{}
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bool IsDefaultFontSufficient () const
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{ return (IsSingleFontSufficient() &&
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GetSufficientFont() == m_hDefaultFont); }
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bool IsSingleFontSufficient () const
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{ return (m_TextSegments.size() == 1); }
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HFONT GetSufficientFont () const
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{ return (m_TextSegments.front().hFont); }
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bool Draw (
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LPCRECT rect, /* i:rect to draw in */
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UINT uFormat, /* i:DrawText format flags */
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LPRECT prectRemaining = NULL) /* o:space remaining after drawing */
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const;
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private:
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typedef std::vector<TextSegmentFontInfo> TextSegmentFontInfoCollection;
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const HDC m_hdc;
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const std::wstring m_strText;
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const HFONT m_hDefaultFont;
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TextSegmentFontInfoCollection m_TextSegments;
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};
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#endif /* FONTLINK_H */
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