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 01:50:38 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
 * 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.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
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 * to use your version of this file under the terms of either the RPSL
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 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * 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
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 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
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 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

/////////////////////////////////////////////////////////////////////////////
//
// drawptxt.cpp	
//
//	(Macintosh version of ../WIN/drawptxt.cpp)
//
//


#include "hxtypes.h"
#include "hxassert.h"
#include "hxslist.h"
#include "hxstack.h"
#include "chxxtype.h"
#include "rt_types.h"
#include "txtattrb.h"
#include "txtcntnr.h"
#include "textline.h"
#include "txtwindw.h"
#include "textprsr.h"
#include "rtwin.h"
#include "atocolor.h"
#include "fontdefs.h"
#include "fontinfo.h"
#ifndef _MAC_MACHO
#include "ugworld.h"
#include "udstate.h"
#endif
#include "hxcom.h"
#include "hxvsurf.h" // for IHXVideoSurface
#include "hxevent.h" // for HX_SURFACE_UPDATE

#ifndef _MAC_MACHO
#include <Quickdraw.h>
#endif

#ifndef _MAC_MACHO
#include "udutils.h" // to get topLeft and botRight macros
#endif

#include "platform/mac/maclibrary.h" // for DWORD

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


// /These are in mrtwin.cpp:
UINT16	Convert8BitTo16Bit(UINT8 x);
void ConvertCOLORTYPEtoRGBColor(RGBColor& rgbColor, COLORTYPE colorVal);



BOOL
DrawPlainText(TextWindow* pTextWindow, void* pvoidEvent,
	void* pPaintstruct, ULONG32 ulTimeOfCurrentDraw)
{
    HX_ASSERT_VALID_PTR(pTextWindow);
    if(!pTextWindow)
    {
	return FALSE;
    }
    
    BOOL b_FunctionSucceeded = TRUE;
    LONG32 lWindowWidth = pTextWindow->getWindowWidth();
    LONG32 lWindowHeight = pTextWindow->getWindowHeight();

    HXxEvent* pEvent = (HXxEvent*)pvoidEvent;
    HX_ASSERT(pEvent);
	    
    ULONG32 listSize = pTextWindow->textCntnrListSize();

    Rect updateRect;
    ::SetRect(&updateRect, 0, 0, pTextWindow->getWindowWidth(), pTextWindow->getWindowHeight()); 
    // /XXXEH- use the following if and when the core starts doing
    // subrects on the Mac:
    CHXxRect* pDestRect = pEvent?
            (CHXxRect*)((HXxEvent*)pvoidEvent)->param2 :
            NULL;

    COLORTYPE backColorType = pTextWindow->getBackgroundColor();

    UINT32 ulEffectiveFgOpacity = pTextWindow->getMediaOpacity();
    UINT32 ulEffectiveBgOpacity = pTextWindow->getBackgroundOpacity();
    UINT32 ulChromaKey = pTextWindow->getChromaKey();
    UINT32 ulChromaKeyTolerance = pTextWindow->getChromaKeyTolerance();
    UINT32 ulChromaKeyOpacity = pTextWindow->getChromaKeyOpacity();        
    // /Helps fix PR 67215:
    // Initialize chromaKey flag. If the background color is the same as the
    // chroma key, then we know we are applying the chroma key. Also, when we
    // draw text of a certain color later down in this method, we may be
    // setting this flag, depending on the text color:
    BOOL bChromaKeyWasApplied = FALSE;
    if (pTextWindow->isChromaKeySet())
    {
        if (DoesChromaKeyMatch(backColorType, ulChromaKey,
		ulChromaKeyTolerance))
        {
            if (ulChromaKeyOpacity < 255)
            {
                bChromaKeyWasApplied = TRUE;
                ulEffectiveBgOpacity = ulChromaKeyOpacity;
            }
        }
    }
    
    // /Draw all the text:
    {
	GWorldPtr theMacGWorld;
	CGrafPtr theSavePort;
	GDHandle theSaveDevice;
	Rect theBounds = updateRect;
	{
	    ::GetGWorld(&theSavePort, &theSaveDevice);
	    RGBColor theForeColor, theBackColor;
	    ::GetForeColor(&theForeColor);
	    ::GetBackColor(&theBackColor);
	    RgnHandle theClipRgn = ::NewRgn();
	    ::GetClip(theClipRgn);
	    theMacGWorld = NULL;
	    
	    Rect gwRect = theBounds;
	    
            Point topLeft;
            Point botRight;
            
            topLeft.h = gwRect.left;
            topLeft.v = gwRect.top;
            
            botRight.h = gwRect.right;
            botRight.v = gwRect.bottom;
            
	    LocalToGlobal(&topLeft);
	    LocalToGlobal(&botRight);
            
            gwRect.left = topLeft.h;
            gwRect.top = topLeft.v;
            gwRect.right = botRight.h;
            gwRect.bottom = botRight.v;
	    	    
	    theMacGWorld = pTextWindow->m_pOffScreenWorld;
	    if (theMacGWorld)
	    {
		::SetGWorld(theMacGWorld, NULL);
		::SetOrigin(theBounds.left, theBounds.top);
		::SetClip(theClipRgn);
		::LockPixels((::GetGWorldPixMap(theMacGWorld)));
		::RGBForeColor(&theForeColor);
		::RGBBackColor(&theBackColor);
	    }
	    else
	    {
		b_FunctionSucceeded = FALSE;
		goto cleanup;
	    }
	    ::DisposeRgn(theClipRgn);
	}

	RGBColor backColor, prevBackColor;
	ConvertCOLORTYPEtoRGBColor(backColor, backColorType);
	::GetBackColor(&prevBackColor);

	// /Paint the background with the specified color:
	// /Just paint using OS API with non-alpha color:
	::RGBBackColor(&backColor);
	::EraseRect(&updateRect);

	//Only draw the text again if we really need to:
	if (listSize  &&
		(TIME_INVALID != ulTimeOfCurrentDraw) )
	{
	    LISTPOSITION pos = pTextWindow->GetStartPosition();

	    while(pos)
	    {
		TextContainer* curTextContainerPtr =
				/*  Note: effectively does GetAt(pos++):  */
				(TextContainer*)pTextWindow->GetNext(pos);

		if (curTextContainerPtr->textHasChangedSinceLastDraw()  ||
			curTextContainerPtr->textShouldBeDrawn())
		{
		    _CHAR* pTextbuffer = curTextContainerPtr->getBuffer();
		    ULONG32 ulTextLengthPlusOneOfCurTC =
			    curTextContainerPtr->getTextLengthPlus1();

		    if (!pTextbuffer  ||  ulTextLengthPlusOneOfCurTC <= 1)
		    {
		        curTextContainerPtr->textHasChangedSinceLastDraw(FALSE);
		        continue;
		    }

		    LONG32 lUpperLeftXWithOffsets =
			    curTextContainerPtr->getXUpperLeftCorner();
		    LONG32 lLowerRightXWithOffsets =
			    curTextContainerPtr->getXLowerRightCorner();
		    LONG32 lUpperLeftYWithOffsets =
			    curTextContainerPtr->getYUpperLeftCorner();
		    LONG32 lLowerRightYWithOffsets =
			    curTextContainerPtr->getYLowerRightCorner();

		    LONG32 xScaled = lUpperLeftXWithOffsets;

		    LONG32 yScaled = lUpperLeftYWithOffsets;
		    
		    const char* pCurFontFaceString = // /NOTE: NULL is a valid value:
			    pTextWindow->getDefaultFontFaceString();
			    
		    const char* pCharset = pTextWindow->getDefaultCharsetString();
		    
		    ULONG32 ulCharset = CHARSET__default;
		    if (pCharset) // /If NULL, just use user's default
		    {
			pTextWindow->getCharsetULONG32(pCharset,
				PLAINTEXT_MAX_CHARSET_LEVEL_SUPPORTED, ulCharset);
			
			BOOL bMightNeedCharsetTranslationForMac = FALSE;
			
			if (CHARSET__iso_8859_1 == ulCharset)
			{
			    bMightNeedCharsetTranslationForMac = TRUE;
			}
			
			// /XXXEH- handle other charset conversions here.
			
			if (bMightNeedCharsetTranslationForMac)
			{
			    if (!pTextWindow->isCharsetTranslatedForOS())
			    {
				// /This may change some of the buffer contents;
				// if so, it's on a 1-byte-for-1-byte basis:
				if (ConvertAcrossCharacterSets(pTextbuffer,
					ulCharset, TRUE,
					PLAINTEXT_MAX_CHARSET_LEVEL_SUPPORTED))
				{
				    pTextWindow->setCharsetTranslatedForOS(TRUE);
				}
			    }
			}
		    }
		    
		    Style tcStyle = NULL;
#if XXXEH_HANDLE_UNDERLINE
		    BOOL bIsUnderlined =
			    pTextWindow->isUnderlinedPlainText();
#else
		    BOOL bIsUnderlined = FALSE;
#endif
		    ULONG32 ulFontWeight = pTextWindow->getDefaultFontWeight();
		    // /XXXEH- add bold-threshold defined value:
		    if (ulFontWeight > DEFAULT_FONT_WEIGHT + 100)
		    {
			tcStyle += bold;
		    }
		    if (pTextWindow->isDefaultFontStyleItalic())
		    {
			tcStyle += italic;
		    }

		    ULONG32 ulBasePointSize = pTextWindow->getDefaultPtSize();
		    
		    TextFace(tcStyle);

		    BOOL bFontFaceFoundOnSystem = FALSE;
		    INT16 iFaceIndx = 0;
		    
		    if (pCurFontFaceString)
		    {
			INT16 iLenOfCurFontFace = strlen(pCurFontFaceString)+1;
			char* pFontFaceBuf = new char[iLenOfCurFontFace];
			if (!pFontFaceBuf)
			{
			     b_FunctionSucceeded = FALSE;
			     goto cleanup;
			}
			*pFontFaceBuf = '\0';
			//change C str to Pascal str
			c2pstrcpy((StringPtr)pFontFaceBuf, pCurFontFaceString);
			GetFNum((StringPtr)pFontFaceBuf, (short*)&iFaceIndx);
			bFontFaceFoundOnSystem = (iFaceIndx!=0);
			delete [] pFontFaceBuf;
		    }
		    //else it's an empty string so do mapping, below...

		    // /If the author specified an explicit font and it was
		    // not found installed on the system, use a reasonable
		    // substitute font based on the charset:
		    if (!bFontFaceFoundOnSystem  &&  pCurFontFaceString  &&
			    pCharset != NULL)
		    {
			if (CHARSET__x_sjis == ulCharset)
			{
			    GetFNum("\pOsaka", (short*)&iFaceIndx);
			    // /XXXEH- if that failed, look for other
			    // well-known Japanese shift-jis fonts:
			}
			else if (CHARSET__gb2312 == ulCharset)
			{
			    // /Simplified Chinese:
			    GetFNum("\p'宋体", (short*)&iFaceIndx);
			}
			else if (CHARSET__big5 == ulCharset  ||
				CHARSET__x_euc_tw == ulCharset)
			{
			    // /Traditional Chinese:
			    GetFNum("\p灿