drawptxt.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: drawptxt.cpp,v 1.1.2.1 2004/07/09 01:50:45 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (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
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 * the rights, obligations and limitations governing use of the
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 * terms of the GNU General Public License Version 2 or later (the
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 * use your version of this file under the terms of any one of the
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 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
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/////////////////////////////////////////////////////////////////////////////
//
// drawptxt.cpp
//
// Function:
//  BOOL DrawPlainText(TextWindow* pTextWindow, void* pDC, void* pPaintstruct,
//	    ULONG32 ulTimeOfCurrentDraw);
// Purpose:
//  This function handles the rendering of plain text by calling an
//  OS-specific API to draw the text in the given window.  Note that, since
//  this funciton deals strictly with plain text, it doesn't need to worry
//  about doing anything to any particular piece of text, e.g., underlining,
//  coloring, font sizing, ...etc., but it *does* have to do that for *all*
//  text if a <param> in the SMIL file that uses this text has dictated such
//  an attribute value (for the entire text).
//    - Windows: calls DrawText()
//
//  This Function is called from WM_PAINT and hdc and paintStruct are from
//  BeginPaint(); paintStruct holds the invalid rectangle to be updated: 
// Returns:
//  Returns FALSE on error, TRUE otherwise. 

#include "hxtypes.h" /*Must be included before windows.h for VC6 compiler*/

#if defined(_WINDOWS)
#include <windows.h>
#endif

#include "hxassert.h"

#include "hxstack.h"
#include "hxslist.h"

#include "rt_types.h" /* for _CHAR, RED_GREEN_OR_BLUE, COLORTYPE */

#include "fontdefs.h"
#include "txtattrb.h"
#include "txtcntnr.h"
#include "textline.h"
#include "atocolor.h"

#include "chxxtype.h"
#include "txtwindw.h" /* for class TextWindow. */
#include "hxcom.h"
#include "hxvsurf.h"
#include "textprsr.h" /* for REAL_TEXT_TRANSPARENT_BGCOLOR_MAJOR_VERSION + ... */
#include "fontinfo.h" /* for ConvertAcrossCharacterSets(). */

#if defined(_WINDOWS)
#include "../rtwin.h"
#elif defined(_MACINTOSH)
#include "rtwin.h"
#endif


#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE		
static char HX_THIS_FILE[] = __FILE__;
#endif


UINT32
getPlainTextFormat(TextWindow* pTextWindow)
{
    UINT32 ulFormat = DT_NOCLIP;
    if (!pTextWindow)
    {
	return 0;
    }

    if (pTextWindow->isRightToLeftReading())
    {
 	// /For Hebrew & Arabic fonts: draw right-to-left;
	ulFormat |= DT_RTLREADING;
    }

    if (pTextWindow->expandTabs())
    {
	ulFormat |= DT_EXPANDTABS;
    }
    // /Fixes PR 95128 where some computers are displaying boxes instead of
    // spaces when DT_EXPANDTABS is false; the following goes ahead and sets
    // it to expand tabs but only to 1-char width stops:
    else
    {
        // /Bits 15