LCOV - code coverage report
Current view: top level - filter/source/graphicfilter/expm - expm.cxx (source / functions) Hit Total Coverage
Test: commit c8344322a7af75b84dd3ca8f78b05543a976dfd5 Lines: 0 103 0.0 %
Date: 2015-06-13 12:38:46 Functions: 0 13 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       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             : 
      21             : #include <vcl/graph.hxx>
      22             : #include <vcl/bmpacc.hxx>
      23             : #include <vcl/fltcall.hxx>
      24             : 
      25             : //============================ XPMWriter ==================================
      26             : 
      27             : class XPMWriter {
      28             : 
      29             : private:
      30             : 
      31             :     SvStream&           m_rOStm;            // the output XPM file
      32             : 
      33             :     bool            mbStatus;
      34             :     bool            mbTrans;
      35             :     BitmapReadAccess*   mpAcc;
      36             :     sal_uLong           mnWidth, mnHeight;  // size in Pixel
      37             :     sal_uInt16          mnColors;
      38             : 
      39             :     com::sun::star::uno::Reference< com::sun::star::task::XStatusIndicator > xStatusIndicator;
      40             : 
      41             :     void                ImplCallback( sal_uInt16 nPercent );
      42             :     bool            ImplWriteHeader();
      43             :     void                ImplWritePalette();
      44             :     void                ImplWriteColor( sal_uInt16 );
      45             :     void                ImplWriteBody();
      46             :     void                ImplWriteNumber( sal_Int32 );
      47             :     void                ImplWritePixel( sal_uLong ) const;
      48             : 
      49             : public:
      50             :     XPMWriter(SvStream& rOStm);
      51             :     ~XPMWriter();
      52             : 
      53             :     bool            WriteXPM( const Graphic& rGraphic, FilterConfigItem* pFilterConfigItem );
      54             : };
      55             : 
      56             : //=================== Methoden von XPMWriter ==============================
      57             : 
      58           0 : XPMWriter::XPMWriter(SvStream& rOStm)
      59             :     : m_rOStm(rOStm)
      60             :     , mbStatus(true)
      61             :     , mbTrans(false)
      62             :     , mpAcc(NULL)
      63             :     , mnWidth(0)
      64             :     , mnHeight(0)
      65           0 :     , mnColors(0)
      66             : {
      67           0 : }
      68             : 
      69             : 
      70             : 
      71           0 : XPMWriter::~XPMWriter()
      72             : {
      73           0 : }
      74             : 
      75             : 
      76             : 
      77           0 : void XPMWriter::ImplCallback( sal_uInt16 nPercent )
      78             : {
      79           0 :     if ( xStatusIndicator.is() )
      80             :     {
      81           0 :         if ( nPercent <= 100 )
      82           0 :             xStatusIndicator->setValue( nPercent );
      83             :     }
      84           0 : }
      85             : 
      86             : 
      87             : 
      88           0 : bool XPMWriter::WriteXPM( const Graphic& rGraphic, FilterConfigItem* pFilterConfigItem)
      89             : {
      90           0 :     Bitmap  aBmp;
      91             : 
      92           0 :     if ( pFilterConfigItem )
      93             :     {
      94           0 :         xStatusIndicator = pFilterConfigItem->GetStatusIndicator();
      95           0 :         if ( xStatusIndicator.is() )
      96             :         {
      97           0 :             OUString aMsg;
      98           0 :             xStatusIndicator->start( aMsg, 100 );
      99             :         }
     100             :     }
     101             : 
     102           0 :     BitmapEx    aBmpEx( rGraphic.GetBitmapEx() );
     103           0 :     aBmp = aBmpEx.GetBitmap();
     104             : 
     105           0 :     if ( rGraphic.IsTransparent() )                 // possibly create transparent color
     106             :     {
     107           0 :         mbTrans = true;
     108           0 :         if ( aBmp.GetBitCount() >= 8 )              // if necessary convert image to 8 bit
     109           0 :             aBmp.Convert( BMP_CONVERSION_8BIT_TRANS );
     110             :         else
     111           0 :             aBmp.Convert( BMP_CONVERSION_4BIT_TRANS );
     112           0 :         aBmp.Replace( aBmpEx.GetMask(), BMP_COL_TRANS );
     113             :     }
     114             :     else
     115             :     {
     116           0 :         if ( aBmp.GetBitCount() > 8 )               // if necessary convert image to 8 bit
     117           0 :             aBmp.Convert( BMP_CONVERSION_8BIT_COLORS );
     118             :     }
     119           0 :     mpAcc = aBmp.AcquireReadAccess();
     120           0 :     if ( mpAcc )
     121             :     {
     122           0 :         SvStreamEndian nOStmOldModus = m_rOStm.GetEndian();
     123           0 :         m_rOStm.SetEndian( SvStreamEndian::BIG );
     124             : 
     125           0 :         mnColors = mpAcc->GetPaletteEntryCount();
     126           0 :         if ( ImplWriteHeader() )
     127             :         {
     128           0 :             ImplWritePalette();
     129           0 :             ImplWriteBody();
     130           0 :             m_rOStm.WriteCharPtr( "\x22XPMENDEXT\x22\x0a};" );
     131             :         }
     132             : 
     133           0 :         m_rOStm.SetEndian(nOStmOldModus);
     134             : 
     135           0 :         Bitmap::ReleaseAccess( mpAcc );
     136             :     }
     137             :     else
     138           0 :         mbStatus = false;
     139             : 
     140             : 
     141           0 :     if ( xStatusIndicator.is() )
     142           0 :         xStatusIndicator->end();
     143             : 
     144           0 :     return mbStatus;
     145             : }
     146             : 
     147             : 
     148             : 
     149           0 : bool XPMWriter::ImplWriteHeader()
     150             : {
     151           0 :     mnWidth = mpAcc->Width();
     152           0 :     mnHeight = mpAcc->Height();
     153           0 :     if ( mnWidth && mnHeight && mnColors )
     154             :     {
     155           0 :         m_rOStm.WriteCharPtr( "/* XPM */\x0astatic char * image[] = \x0a{\x0a\x22" );
     156           0 :         ImplWriteNumber( mnWidth );
     157           0 :         m_rOStm.WriteUChar( 32 );
     158           0 :         ImplWriteNumber( mnHeight );
     159           0 :         m_rOStm.WriteUChar( 32 );
     160           0 :         ImplWriteNumber( mnColors );
     161           0 :         m_rOStm.WriteUChar( 32 );
     162           0 :         ImplWriteNumber( ( mnColors > 26 ) ? 2 : 1 );
     163           0 :         m_rOStm.WriteCharPtr( "\x22,\x0a" );
     164             :     }
     165           0 :     else mbStatus = false;
     166           0 :     return mbStatus;
     167             : }
     168             : 
     169             : 
     170             : 
     171           0 : void XPMWriter::ImplWritePalette()
     172             : {
     173           0 :     sal_uInt16 nTransIndex = 0xffff;
     174             : 
     175           0 :     if ( mbTrans )
     176           0 :         nTransIndex = mpAcc->GetBestPaletteIndex( BMP_COL_TRANS );
     177           0 :     for ( sal_uInt16 i = 0; i < mnColors; i++ )
     178             :     {
     179           0 :         m_rOStm.WriteCharPtr( "\x22" );
     180           0 :         ImplWritePixel( i );
     181           0 :         m_rOStm.WriteUChar( 32 );
     182           0 :         if ( nTransIndex != i )
     183             :         {
     184           0 :             ImplWriteColor( i );
     185           0 :             m_rOStm.WriteCharPtr( "\x22,\x0a" );
     186             :         }
     187             :         else
     188           0 :             m_rOStm.WriteCharPtr( "c none\x22,\x0a" );
     189             :     }
     190           0 : }
     191             : 
     192             : 
     193             : 
     194           0 : void XPMWriter::ImplWriteBody()
     195             : {
     196           0 :     for ( sal_uLong y = 0; y < mnHeight; y++ )
     197             :     {
     198           0 :         ImplCallback( (sal_uInt16)( ( 100 * y ) / mnHeight ) );         // processing output in percent
     199           0 :         m_rOStm.WriteUChar( 0x22 );
     200           0 :         for ( sal_uLong x = 0; x < mnWidth; x++ )
     201             :         {
     202           0 :             ImplWritePixel( mpAcc->GetPixelIndex( y, x ) );
     203             :         }
     204           0 :         m_rOStm.WriteCharPtr( "\x22,\x0a" );
     205             :     }
     206           0 : }
     207             : 
     208             : 
     209             : // write a decimal number in ascii format into the stream
     210             : 
     211           0 : void XPMWriter::ImplWriteNumber(sal_Int32 nNumber)
     212             : {
     213           0 :     const OString aNum(OString::number(nNumber));
     214           0 :     m_rOStm.WriteCharPtr( aNum.getStr() );
     215           0 : }
     216             : 
     217             : 
     218             : 
     219           0 : void XPMWriter::ImplWritePixel( sal_uLong nCol ) const
     220             : {
     221           0 :     if ( mnColors > 26 )
     222             :     {
     223           0 :         sal_uInt8 nDiff = (sal_uInt8) ( nCol / 26 );
     224           0 :         m_rOStm.WriteUChar( nDiff + 'A' );
     225           0 :         m_rOStm.WriteUChar( nCol - ( nDiff*26 ) + 'A' );
     226             :     }
     227             :     else
     228           0 :         m_rOStm.WriteUChar( nCol + 'A' );
     229           0 : }
     230             : 
     231             : 
     232             : // write a color value in hex format into the stream
     233           0 : void XPMWriter::ImplWriteColor( sal_uInt16 nNumber )
     234             : {
     235             :     sal_uLong   nTmp;
     236             :     sal_uInt8   j;
     237             : 
     238           0 :     m_rOStm.WriteCharPtr( "c #" );   // # indicates a following hex value
     239           0 :     const BitmapColor& rColor = mpAcc->GetPaletteColor( nNumber );
     240           0 :     nTmp = ( rColor.GetRed() << 16 ) | ( rColor.GetGreen() << 8 ) | rColor.GetBlue();
     241           0 :     for ( signed char i = 20; i >= 0 ; i-=4 )
     242             :     {
     243           0 :         if ( ( j = (sal_uInt8)( nTmp >> i ) & 0xf ) > 9 )
     244           0 :             j += 'A' - 10;
     245             :         else
     246           0 :             j += '0';
     247           0 :         m_rOStm.WriteUChar( j );
     248             :     }
     249           0 : }
     250             : 
     251             : 
     252             : 
     253             : // this needs to be kept in sync with
     254             : // ImpFilterLibCacheEntry::GetImportFunction() from
     255             : // vcl/source/filter/graphicfilter.cxx
     256             : #if defined(DISABLE_DYNLOADING)
     257             : #define GraphicExport expGraphicExport
     258             : #endif
     259             : 
     260             : extern "C" SAL_DLLPUBLIC_EXPORT bool SAL_CALL
     261           0 : GraphicExport( SvStream& rStream, Graphic& rGraphic, FilterConfigItem* pFilterConfigItem )
     262             : {
     263           0 :     XPMWriter aXPMWriter(rStream);
     264             : 
     265           0 :     return aXPMWriter.WriteXPM( rGraphic, pFilterConfigItem );
     266           0 : }
     267             : 
     268             : 
     269             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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