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3gppttrenderer.h：源码内容
							/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2003 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */
#ifndef _3GPPTTRENDERER_H_
#define _3GPPTTRENDERER_H_
/************************************************************************
 *
 * Defines:
 */
// /These are special-case font names that can be used in a FontTable entry:
#define FONT_FAMILY_SERIF_STR       "Serif"
#define FONT_FAMILY_SANS_SERIF_STR  "Sans-Serif"
#define FONT_FAMILY_MONOSPACE_STR   "Monospace"
#define MAX_3GPPTT_URL_LEN          (sizeof(UINT8))
// /These are for drawing; it's possible that we want to set (1,0) (i.e.,
// something other than (0,0) as the starting point for drawing text:
#define INITIAL_CURSOR_X    0
#define INITIAL_CURSOR_Y    0
#if defined(_WINDOWS) // /                                                     -----vvvvvvvvvvvvvvvvvvvvvvvvvv-----
#define USE_DIB_SECTION 1
#endif // /_WINDOWS                                                            _____^^^^^^^^^^^^^^^^^^^^^^^^^^_____
#if defined(_SYMBIAN) // /                                                     -----vvvvvvvvvvvvvvvvvvvvvvvvvv-----
#define HX_3GPPTT_DEFAULT_bits_PER_PIXEL  12 /* RGB444 native*/
#if defined(HELIX_3GPPTT_SUPPORTS_TRANSPARENCY)  &&  (HX_3GPPTT_DEFAULT_bits_PER_PIXEL == 12)
#error   this bit depth wont work with ARGB, dimwit
#endif // /HELIX_3GPPTT_SUPPORTS_TRANSPARENCY
#else // / not _SYMBIAN                                                        ------------------------------------
#define HX_3GPPTT_DEFAULT_bits_PER_PIXEL  32
#endif // /end else of if _SYMBIAN                                             _____^^^^^^^^^^^^^^^^^^^^^^^^^^_____
#if defined(_WINDOWS) // /                                                     -----vvvvvvvvvvvvvvvvvvvvvvvvvv-----
#define HX_3GPPTT_FIXED_PITCH                     FIXED_PITCH
#define HX_3GPPTT_DEFAULT_PITCH                   DEFAULT_PITCH
#define HX_3GPPTT_FF_DONTCARE                     FF_DONTCARE
#define HX_3GPPTT_FF_SANSSERIF_PROPORTIONAL_PITCH FF_SWISS
#define HX_3GPPTT_FF_SERIF_PROPORTIONAL_PITCH     FF_ROMAN
#define HX_3GPPTT_JUSTIFY_LEFT                    DT_LEFT
#define HX_3GPPTT_JUSTIFY_HCENTER                 DT_CENTER
#define HX_3GPPTT_JUSTIFY_RIGHT                   DT_RIGHT
#define HX_3GPPTT_JUSTIFY_TOP                     DT_TOP
#define HX_3GPPTT_JUSTIFY_VCENTER                 DT_VCENTER
#define HX_3GPPTT_JUSTIFY_BOTTOM                  DT_BOTTOM
#define HX_3GPPTT_INITIAL_TEXTFORMAT              DT_NOCLIP
#else // / not _WINDOWS                                                        ------------------------------------
#define HX_3GPPTT_DEFAULT_PITCH                   0x0
#define HX_3GPPTT_FF_DONTCARE                     0x0
#define HX_3GPPTT_FIXED_PITCH                     0x1
#define HX_3GPPTT_FF_SANSSERIF_PROPORTIONAL_PITCH 0x0
#define HX_3GPPTT_FF_SERIF_PROPORTIONAL_PITCH     0x2
#define HX_3GPPTT_JUSTIFY_LEFT                    0x1
#define HX_3GPPTT_JUSTIFY_HCENTER                 0x4
#define HX_3GPPTT_JUSTIFY_RIGHT                   0x2
#define HX_3GPPTT_JUSTIFY_TOP                     0x10
#define HX_3GPPTT_JUSTIFY_VCENTER                 0x40
#define HX_3GPPTT_JUSTIFY_BOTTOM                  0x20
#define HX_3GPPTT_INITIAL_TEXTFORMAT              0x0
#endif // /else of if _WINDOWS.                                                _____^^^^^^^^^^^^^^^^^^^^^^^^^^_____
/****************************************************************************
 *
 *  C3GPPTimedTextRenderer Class
 *
 *  3GPPTimedText implementation of a basic renderer.
 */
class C3GPPTimedTextRenderer : public IHXPlugin
                             , public IHXRenderer
                             , public IHXSiteUser
                             , public CHXBaseCountingObject
{
  public:
    /****** Public Class Methods ******************************************/
    C3GPPTimedTextRenderer();
    // /Clears out and deletes contents of m_pTextContainerList:
    void ClearTextContainerLists(BOOL bDeleteListPtrWhenCleared);
    BOOL OnMouseMove(INT16 fwKeys, INT16 xPos, INT16 yPos);
    HX_RESULT HandleClick(INT16 fwKeys, INT16 xPos, INT16 yPos);
    HX_RESULT UpdateDisplay(UINT32 ulTime);
    HX_RESULT Draw(IHXVideoSurface *pVideoSurface);
    HX_RESULT SetFont(const C3GPPTextSampleEntry* pCurTextSampleEntry,
                      UINT16 uiFontID_override,
                      const char* pCurFontFaceString,
                      BOOL bIsBolded,
                      BOOL bIsItalicized,
                      BOOL bIsUnderlined,
                      BOOL bIsStruckThrough,
                      UINT32 ulScaledHeight
#if defined(_WINDOWS) // /                                                     -----vvvvvvvvvvvvvvvvvvvvvvvvvv-----
                      , DWORD fdwCharSet
#endif // /_WINDOWS                                                            _____^^^^^^^^^^^^^^^^^^^^^^^^^^_____
                      );
    UINT32 SetJustificationFlags(const C3GPPTextSampleEntry* pCurTextSampleEntry);
    HX_RESULT FillRectangle(UINT32 ulRectColorARGB);
#if defined(_WINDOWS) // /                                                     -----vvvvvvvvvvvvvvvvvvvvvvvvvv-----
    HX_RESULT ConvertToOSRenderableChars(const C3GPPTextContainer* pTextCont,
                               /*OUT*/ DWORD& fdwCharSet,
                               /*OUT*/ char*& pszNativeString,
                               /*OUT*/ INT32& lNativeStringLen);
    HX_RESULT GetAppropriateCharset(wchar_t* pUTF16String,
        INT32 lLenUTF16StrInWideChars,
        /*OUT*/ DWORD& fdwCharSet, /*OUT*/UINT32& ulCodePage);
#endif // /_WINDOWS                                                            _____^^^^^^^^^^^^^^^^^^^^^^^^^^_____
    C3GPPTextHyperTextBox* findActiveHyperlinkAtXY(
            INT16 xPos, INT16 yPos);
    UINT32 GetPacketContentTime(IHXPacket* pPacket);
    HX_RESULT HandleNewText(IHXPacket* pNewPacket,
                            LISTPOSITION& plistPosOfFirstTxtCntnr);
    // /(Only) call this when new packet arrives:
    HX_RESULT SetPriorPacketTCsEndTimes();
    HX_RESULT InsertInRedrawListInTemporalOrder(
            const C3GPPTextContainer* pTextContainer);
    HX_RESULT RemoveFromRedrawList(const C3GPPTextContainer* pTextContainer);
    /************************************************************************
     *  IHXRenderer Interface Methods                       ref:    hxrendr.h
     */
    STDMETHOD(StartStream) (THIS_ IHXStream* pStream, IHXPlayer* pPlayer);
    STDMETHOD(EndStream )  (THIS);
    STDMETHOD(OnHeader  )  (THIS_ IHXValues* pStreamHeaderObj);
    STDMETHOD(OnPacket  )  (THIS_ IHXPacket* pPacket, INT32 timeOffset);
    STDMETHOD(OnTimeSync)  (THIS_ UINT32 currentPlayBackTime);
    STDMETHOD(OnPreSeek )  (THIS_ UINT32 timeBefore, UINT32 timeAfter);
    STDMETHOD(OnPostSeek)  (THIS_ UINT32 timeBefore, UINT32 timeAfter);
    STDMETHOD(OnPause   )  (THIS_ UINT32 timeBeforePause);
    STDMETHOD(OnBegin   )  (THIS_ UINT32 timeAfterBegin);
    STDMETHOD(OnBuffering) (THIS_ UINT32 reason, UINT16 percentComplete);
    STDMETHOD(GetRendererInfo)
        (THIS_
         REF(const char**) pStreamMimeTypes,
         REF(UINT32)       initialGranularity
        );
    STDMETHOD(GetDisplayType)
        (THIS_
         REF(HX_DISPLAY_TYPE) displayType,
         REF(IHXBuffer*)      pDisplayInfo
        );
    STDMETHOD(OnEndofPackets) (THIS);
    /************************************************************************
     *  IHXSiteUser Interface Methods                         ref:    hxwin.h
     */
    STDMETHOD(AttachSite)  (THIS_ IHXSite* pSite);
    STDMETHOD(DetachSite)  (THIS);
    STDMETHOD(HandleEvent) (THIS_ HXxEvent* pEvent);
    STDMETHOD_(BOOL,NeedsWindowedSites) (THIS);
    
    
    /************************************************************************
     *  IHXPlugin Interface Methods                         ref:    hxplugn.h
     */
    STDMETHOD(GetPluginInfo)
        (THIS_ 
          REF(BOOL)        bLoadMultiple,
          REF(const char*) pDescription,
          REF(const char*) pCopyright,
          REF(const char*) pMoreInfoURL,
          REF(UINT32)      versionNumber
        );
    STDMETHOD(InitPlugin) (THIS_ IUnknown* pContext);
    /************************************************************************
     *  IUnknown COM Interface Methods                          ref:  pncom.h
     */
    STDMETHOD (QueryInterface ) (THIS_ REFIID ID, void** ppInterfaceObj);
    STDMETHOD_(UINT32, AddRef ) (THIS);
    STDMETHOD_(UINT32, Release) (THIS);
  private:
    /****** Private Class Methods ******************************************/
    HX_RESULT CreateOffscreenBuffer(HXxSize& hxsize);
    void SetDrawOutputBuffer();
    // /This recalculates the list of text containers that need to be drawn
    // as well as those that don't need to be drawn based on new time:
    HX_RESULT RecomputeTextContainerDrawList(UINT32 ulCurTime);
    /****** Private Class Variables ****************************************/
    INT32               m_lRefCount;
    IUnknown*           m_pContext;
    IHXStream*          m_pStream;
    IHXPlayer*          m_pPlayer;
    IHXValues*          m_pHeader;
    IHXPacket*          m_pLatestPacket;
    BOOL                m_bGotAllPacketsAlready;
    UINT32              m_ulTimeOfLastTimeSync; // /Most-recent time sync
    UINT32              m_ulLastPacketTime;
    UINT32              m_ulLastRealPacketTime;
    UINT32              m_ulNumberOfClicks;
    BOOL                m_bIsSubscribed;
    IHXHyperNavigate*   m_pHyperNavigate;
    IHXBackChannel*     m_pBackChannel;
    IHXASMStream*       m_pASMStream;
    HXxSize             m_size;
    IHXMultiInstanceSiteUserSupplier*   m_pMISUS;
    IHXSite*                            m_pMISUSSite;
    IHXCommonClassFactory*              m_pCommonClassFactory;
    BOOL                m_bInSeekMode;
    BOOL                m_bRTPPacketTested;
    BOOL                m_bUsesRTPPackets;
    UINT32              m_ulDuration;
    // /This is the offset from video's origin (top left point):
    HXxPoint            m_originTransformXY;
    UINT32              m_ulNumTextSampleEntries;
    IHXBuffer*          m_p3GPPTextSampleEntryPackedArray;
    SimpleArray         m_textSampleEntries;
    RuleToFlagMap*      m_pRuleToFlagMap;
    CHXSimpleList*      m_pTextContainerList;
    LISTPOSITION        m_pTextContainerListFutureTimePos;
    // /This keeps track of T.C.s that need to be redrawn periodically due to
    // scroll motion or blinking:
    CHXSimpleList*      m_pTextContainerRedrawList;
    INT16               m_nLastMouseMoveXPos;
    INT16               m_nLastMouseMoveYPos;
    HXxEvent*           m_pEvent;
    // /In Symbian, this is just a pointer into m_pBitMap so
    // DO NOT NEW OR DELETE in Symbian!:
    BYTE*               m_pDrawOutputBuffer;
    UINT32              m_ulDrawOutputBufferSizeInBytes;
    UINT32              m_ulBitsPerPixel;
    INT32               m_lXScrollOffset;
    INT32               m_lYScrollOffset;
    double              m_dScrollFactor;
    BOOL                m_bDrawInNonTextScrollArea;
#if defined(HELIX_3GPPTT_USE_STATUS_BAR)
    IHXStatusMessage*   m_pStatusMessage;
    BOOL                m_bStatusMsgWillNeedErasing;
    char*               m_pszHLinkToDisplay;
#endif /* HELIX_3GPPTT_USE_STATUS_BAR */
#if defined(_WINDOWS) // /                                                     -----vvvvvvvvvvvvvvvvvvvvvvvvvv-----
    BOOL                m_bNeedToSetHyperlinkHandCursor;
    HCURSOR             m_hHyperlinkCursor;
    HCURSOR             m_hPreHyperlinkCursor;
    // /These are used for TextOut()s of text to blt to vid surface:
    void*               m_pDeviceContextMemory;  //memory DC for textWindow.
    HFONT               m_pFont;
    HFONT               m_pFontOld;
    
#if defined(USE_DIB_SECTION)
    HBITMAP             m_hBitmap;
    HBITMAP             m_hOldBitmap;
    LPBITMAPINFO        m_LPBITMAPINFO;
    BITMAPINFOHEADER    m_BITMAPINFOHEADER;
    BOOL                AllocNewLPBITMAPINFO(UINT32 ulNumBytes);
#else
#error: non-DIB-section version not implemented for Win32
#endif /* USE_DIB_SECTION */
#elif defined(_MACINTOSH)
    CursHandle          m_hHyperlinkCursor;
    typedef enum
    {
        CURSOR_ARROW,
        CURSOR_HYPERLINK
    }
    CursorShapes;
    CursorShapes        m_CurrentCursor;
    CResourceLoader*    m_pResourceLoader;
    // /For offscreen drawing of text: 
    GWorldPtr           m_pOffScreenWorld;
#elif defined(_UNIX) && (!(defined(_BEOS)))
    Cursor              m_hHyperlinkCursor;
    BOOL                m_bHandActivated;
    Display*            m_pdisp;
    Window              m_window;
    GC                  m_gc;
#elif defined(_SYMBIAN) // /                                                   ------------------------------------
    CFbsBitmap*         m_pBitMap;
    CFont*              m_pFont;
    CFbsScreenDevice*   m_pScreenDevice;
    CFbsBitGc*          m_pGCSite;
    CFbsBitGc*          m_pGCOffscreen;
#endif // /_WINDOWS -elif- _MACINTOSH -elif- (_UNIX && !_BEOS)                 _____^^^^^^^^^^^^^^^^^^^^^^^^^^_____
#if !defined(_USE_DIB_SECTION)
    HXBitmapInfoHeader m_BitmapInfoHeader;
#endif
    /****** Private Static Class Variables *********************************/
    static const char* const  zm_pDescription;
    static const char* const  zm_pCopyright;
    static const char* const  zm_pMoreInfoURL;
    static const char* const  zm_pStreamMimeTypes[];
    /****** Private Class Methods ******************************************/
    ~C3GPPTimedTextRenderer();
    PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME       // Avoids GCC compiler warning
};
#endif /* ndef _3GPPTTRENDERER_H_*/

						