sw/source/core/text/txtpaint.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "txtpaint.hxx"
  21 #include <txtfrm.hxx>
  22 #include <swrect.hxx>
  23 #include <rootfrm.hxx>
  24
  25 SwSaveClip::~SwSaveClip()
  26 {
  27     // We recover the old state
  28     if( !(m_pOut && m_bChg) )
  29         return;
  30
  31     if ( m_pOut->GetConnectMetaFile() )
  32         m_pOut->Pop();
  33     else
  34     {
  35         if( m_bOn )
  36             m_pOut->SetClipRegion( m_aClip );
  37         else
  38             m_pOut->SetClipRegion();
  39     }
  40     m_bChg = false;
  41 }
  42
  43 void SwSaveClip::ChgClip_( const SwRect &rRect, const SwTextFrame* pFrame,
  44                            bool bEnlargeRect,
  45                            sal_Int32 nEnlargeTop,
  46                            sal_Int32 nEnlargeBottom )
  47 {
  48     SwRect aOldRect( rRect );
  49     const bool bVertical = pFrame && pFrame->IsVertical();
  50
  51     if ( pFrame && pFrame->IsRightToLeft() )
  52         pFrame->SwitchLTRtoRTL( const_cast<SwRect&>(rRect) );
  53
  54     if ( bVertical )
  55         pFrame->SwitchHorizontalToVertical( const_cast<SwRect&>(rRect) );
  56
  57     if ( !m_pOut || (!rRect.HasArea() && !m_pOut->IsClipRegion()) )
  58     {
  59         const_cast<SwRect&>(rRect) = aOldRect;
  60         return;
  61     }
  62
  63     if ( !m_bChg )
  64     {
  65         if ( m_pOut->GetConnectMetaFile() )
  66             m_pOut->Push();
  67         else if ( m_bOn )
  68             m_aClip = m_pOut->GetClipRegion();
  69     }
  70
  71     if ( !rRect.HasArea() )
  72         m_pOut->SetClipRegion();
  73     else
  74     {
  75         tools::Rectangle aRect( rRect.SVRect() );
  76
  77         // Having underscores in our line, we enlarged the repaint area
  78         // (see frmform.cxx) because for some fonts it could be too small.
  79         // Consequently, we have to enlarge the clipping rectangle as well.
  80         if ( bEnlargeRect && ! bVertical )
  81             aRect.AdjustBottom(40 );
  82
  83         // enlarge clip for paragraph margins at small fixed line height
  84         if ( nEnlargeTop > 0 )
  85             aRect.AdjustTop( -nEnlargeTop );
  86
  87         if ( nEnlargeBottom > 0 )
  88             aRect.AdjustBottom( nEnlargeBottom );
  89
  90         // If the ClipRect is identical, nothing will happen
  91         if( m_pOut->IsClipRegion() ) // no && because of Mac
  92         {
  93             if ( aRect == m_pOut->GetClipRegion().GetBoundRect() )
  94             {
  95                 const_cast<SwRect&>(rRect) = aOldRect;
  96                 return;
  97             }
  98         }
  99
 100         if( SwRootFrame::HasSameRect( rRect ) )
 101             m_pOut->SetClipRegion();
 102         else
 103         {
 104             const vcl::Region aClipRegion( aRect );
 105             m_pOut->SetClipRegion( aClipRegion );
 106         }
 107     }
 108     m_bChg = true;
 109
 110     const_cast<SwRect&>(rRect) = aOldRect;
 111 }
 112
 113 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */