richfragment.cpp

著名的下载软件核心Shareaza

//
// RichFragment.cpp
//
// Copyright (c) Shareaza Development Team, 2002-2004.
// This file is part of SHAREAZA (www.shareaza.com)
//
// Shareaza is free software; you can redistribute it
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// Shareaza is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Shareaza; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//

#include "StdAfx.h"
#include "Shareaza.h"
#include "RichFragment.h"
#include "RichElement.h"
#include "RichViewCtrl.h"

#include "CoolInterface.h"
#include "Emoticons.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif


//////////////////////////////////////////////////////////////////////
// CRichFragment construction

CRichFragment::CRichFragment(CRichElement* pElement, int nOffset, int nLength, CPoint* pPoint, CSize* pSize)
{
	m_pElement	= pElement;
	m_pt		= *pPoint;
	m_sz		= *pSize;
	m_nOffset	= (WORD)nOffset;
	m_nLength	= (WORD)nLength;
}

CRichFragment::CRichFragment(CRichElement* pElement, CPoint* pPoint)
{
	m_pElement	= pElement;
	m_pt		= *pPoint;
	m_sz		= pElement->GetSize();
	m_nOffset	= 0;
	m_nLength	= 0;
}

CRichFragment::~CRichFragment()
{
}

//////////////////////////////////////////////////////////////////////
// CRichFragment append additional text

void CRichFragment::Add(int nLength, CSize* pSize)
{
	ASSERT( m_pElement->m_nType >= retText );
	
	m_nLength	= nLength;
	m_sz		= *pSize;
}

//////////////////////////////////////////////////////////////////////
// CRichFragment construction

void CRichFragment::Paint(CDC* pDC, CRichViewCtrl* pCtrl, int nFragment)
{
	BOOL bClean  =	pCtrl->m_pSelAbsEnd.nFragment < nFragment ||
					pCtrl->m_pSelAbsStart.nFragment > nFragment;
	BOOL bSelect =	FALSE;
	
	if ( ! bClean )
	{
		if ( pCtrl->m_pSelAbsStart.nFragment == pCtrl->m_pSelAbsEnd.nFragment &&
			 pCtrl->m_pSelAbsStart.nOffset == pCtrl->m_pSelAbsEnd.nOffset )
		{
			bClean = TRUE;
		}
		else if (	nFragment < pCtrl->m_pSelAbsEnd.nFragment &&
				(	nFragment > pCtrl->m_pSelAbsStart.nFragment ||
					nFragment == pCtrl->m_pSelAbsStart.nFragment &&
					0 == pCtrl->m_pSelAbsStart.nOffset ) )
		{
			bSelect = TRUE;
		}
	}
	
	if ( m_pElement->m_nType >= retText )
	{
		LPCTSTR pszText = (LPCTSTR)m_pElement->m_sText + m_nOffset;
		
		if ( bClean )
		{
			pDC->ExtTextOut( m_pt.x, m_pt.y, ETO_OPAQUE, NULL, pszText, m_nLength, NULL );
		}
		else if ( bSelect )
		{
			pDC->SetBkColor( pDC->SetTextColor( pDC->GetBkColor() ) );
			pDC->ExtTextOut( m_pt.x, m_pt.y, ETO_OPAQUE, NULL, pszText, m_nLength, NULL );
			pDC->SetBkColor( pDC->SetTextColor( pDC->GetBkColor() ) );
		}
		else if (	pCtrl->m_pSelAbsStart.nFragment == nFragment ||
					pCtrl->m_pSelAbsEnd.nFragment == nFragment )
		{
			int nCharStart = 0, nCharEnd = m_nLength;
			int nX = m_pt.x;
			
			if ( pCtrl->m_pSelAbsStart.nFragment == nFragment )
			{
				nCharStart = pCtrl->m_pSelAbsStart.nOffset;
			}
			
			if ( pCtrl->m_pSelAbsEnd.nFragment == nFragment )
			{
				nCharEnd = pCtrl->m_pSelAbsEnd.nOffset;
			}
			
			if ( nCharStart > 0 )
			{
				pDC->ExtTextOut( nX, m_pt.y, ETO_OPAQUE, NULL, pszText, nCharStart, NULL );
				nX += pDC->GetTextExtent( pszText, nCharStart ).cx;
				pszText += nCharStart;
			}
			
			if ( nCharStart < nCharEnd )
			{
				pDC->SetBkColor( pDC->SetTextColor( pDC->GetBkColor() ) );
				pDC->ExtTextOut( nX, m_pt.y, ETO_OPAQUE, NULL, pszText, nCharEnd - nCharStart, NULL );
				pDC->SetBkColor( pDC->SetTextColor( pDC->GetBkColor() ) );
				nX += pDC->GetTextExtent( pszText, nCharEnd - nCharStart ).cx;
				pszText += nCharEnd - nCharStart;
			}
			
			if ( nCharEnd < m_nLength )
			{
				pDC->ExtTextOut( nX, m_pt.y, ETO_OPAQUE, NULL, pszText, m_nLength - nCharEnd, NULL );
			}
		}
		else
		{
			pDC->ExtTextOut( m_pt.x, m_pt.y, ETO_OPAQUE, NULL, pszText, m_nLength, NULL );
		}
		
		pDC->ExcludeClipRect( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
	}
	else if ( m_pElement->m_nType == retBitmap && m_pElement->m_hImage )
	{
		CDC mdc;
		mdc.CreateCompatibleDC( pDC );
		
		HBITMAP hOld = (HBITMAP)SelectObject( mdc.GetSafeHdc(),
			(HBITMAP)m_pElement->m_hImage );
		
		pDC->BitBlt( m_pt.x, m_pt.y, m_sz.cx, m_sz.cy, &mdc, 0, 0, SRCCOPY );
		
		SelectObject( mdc.GetSafeHdc(), hOld );
		mdc.DeleteDC();
		
		if ( bSelect )
		{
			CRect rc( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
			pDC->InvertRect( &rc );
		}
		
		pDC->ExcludeClipRect( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
	}
	else if ( m_pElement->m_nType == retIcon && m_pElement->m_hImage )
	{
		DrawIconEx( pDC->GetSafeHdc(), m_pt.x, m_pt.y, (HICON)m_pElement->m_hImage,
			m_sz.cx, m_sz.cy, 0, (HBRUSH)pCtrl->m_pBrush.GetSafeHandle(), DI_NORMAL );
		
		if ( bSelect )
		{
			CRect rc( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
			pDC->InvertRect( &rc );
		}
		
		pDC->ExcludeClipRect( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
	}
	else if ( m_pElement->m_nType == retEmoticon )
	{
		Emoticons.Draw( pDC, (int)m_pElement->m_hImage, m_pt.x, m_pt.y,
			pDC->GetBkColor() );
		
		if ( bSelect )
		{
			CRect rc( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
			pDC->InvertRect( &rc );
		}
		
		pDC->ExcludeClipRect( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
	}
	else if ( m_pElement->m_nType == retCmdIcon )
	{
		ImageList_DrawEx( CoolInterface.m_pImages, (int)m_pElement->m_hImage,
			*pDC, m_pt.x, m_pt.y, 16, 16, pDC->GetBkColor(), CLR_NONE, ILD_NORMAL );
		
		if ( bSelect )
		{
			CRect rc( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
			pDC->InvertRect( &rc );
		}
		
		pDC->ExcludeClipRect( m_pt.x, m_pt.y, m_pt.x + m_sz.cx, m_pt.y + m_sz.cy );
	}
}