txtcntnr.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: txtcntnr.h,v 1.1.2.1 2004/07/09 01:50:15 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
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 * The contents of this file, and the files included with this file,
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 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
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 * will apply. You may also obtain the license terms directly from
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/////////////////////////////////////////////////////////////////////////////
//
//  TXTCNTNR.H
//
//  TextContainer class definition.
//
//	A class TextContainer object holds the actual buffer of text to be
//	rendered.
//
//	TextContainerList class definition.
//
//	A class TextContainerList object is a list of TextContainer objects.
//
//

#if !defined(_TXTCNTNR_HPP_)
#define _TXTCNTNR_HPP_


//////////////////////////////////////////////////////////////////////////////
//
//	TextContainer class:
//
class TextContainer : public TextAttributes
{ 
  private: 
    _CHAR* m_pBuffer; 
    //  Holds current size of buffer, including terminating '\0':
    ULONG32 m_textLengthPlus1;
    //Is set to TRUE by appendText() or overwriteText() if they alter
    // the m_pBuffer contents.  If this is TRUE when 
    // RealTextRenderer::OnTimeSynch() is called, then
    // RealTextRenderer::OnTimeSynch() renders the text and sets
    // m_textHasChanged to FALSE:
    BOOL m_textHasChanged;
    BOOL m_bTextShouldBeDrawn;

    //Added this so I can "erase" text only once when
    // it goes out of scope, time-wise:
    BOOL m_bFinalDrawWasDone;

    //These are needed so we can figure out how much looping
    // has occured since the last <CLEAR> tag became effective (NOT when
    // the <CLEAR> was parsed, which could have been earlier):
    ULONG32 m_ulTimeOfLastClearTag;
    LONG32 m_lAmountLoopedSoFar;
	
  public: 
    TextContainer();
    TextContainer(_CHAR* pText, ULONG32 textLen);

    ~TextContainer() { deleteBuffer(); } 
    
    void deleteBuffer(); //is in file "TxtCntnr.cpp"

    _CHAR* getBuffer();
    
    //returns equivalent of: strlen(m_pBuffer)+1:
    ULONG32 getTextLengthPlus1() { return m_textLengthPlus1; }

    BOOL textHasChangedSinceLastDraw() { return m_textHasChanged; }
    void textHasChangedSinceLastDraw(BOOL thc) { m_textHasChanged = thc; }

    BOOL textShouldBeDrawn() { return m_bTextShouldBeDrawn; }
    void textShouldBeDrawn(BOOL tsbr) { m_bTextShouldBeDrawn = tsbr; }

    BOOL appendText(_CHAR* pMoreText, ULONG32 moreTextLen); 

    BOOL overwriteText(_CHAR* pNewText, ULONG32 len);

    //Added these so I can "erase" text only once when it
    // goes out of scope, time-wise:
    BOOL getFinalDrawWasDone() { return m_bFinalDrawWasDone; }
    void setFinalDrawWasDone(BOOL wasDone) { m_bFinalDrawWasDone=wasDone; }

    ULONG32 getTimeOfLastClearTag() { return m_ulTimeOfLastClearTag; }
    void setTimeOfLastClearTag(ULONG32 tlc) { m_ulTimeOfLastClearTag = tlc; }
    LONG32 getAmountLoopedSoFar() { return m_lAmountLoopedSoFar; }
    void setAmountLoopedSoFar(LONG32 l) { m_lAmountLoopedSoFar = l; }

    //This function converts characters from mac-roman to iso-8859-1
    // (us-ascii) or vice versa, depending on both the client operating
    // system and the active charset of *this.  So, if we're rendering on a
    // Macintosh, the following RealText as authored in Windows Notepad
    // would do as it says:
    //	<font charset="iso-8859-1">"