Move GraphicFilter class to vcl.

Change-Id: I2318eeda59cee1cfdb074f9a90fd7d8d80aab19f

2 files changed, 472 insertions, 0 deletions

diff --git a/vcl/source/filter/ixbm/xbmread.cxx b/vcl/source/filter/ixbm/xbmread.cxx
new file mode 100644
index 000000000000..762c6adee913
--- /dev/null
+++ b/vcl/source/filter/ixbm/xbmread.cxx
@@ -0,0 +1,385 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#define _XBMPRIVATE
+#include <ctype.h>
+#include <comphelper/string.hxx>
+#include "xbmread.hxx"
+
+// -------------
+// - XBMReader -
+// -------------
+
+XBMReader::XBMReader( SvStream& rStm ) :
+            rIStm           ( rStm ),
+            pAcc1           ( NULL ),
+            nLastPos        ( rStm.Tell() ),
+            nWidth          ( 0 ),
+            nHeight         ( 0 ),
+            bStatus         ( sal_True )
+{
+    pHexTable = new short[ 256 ];
+    maUpperName = rtl::OUString("SVIXBM");
+    InitTable();
+}
+
+// ------------------------------------------------------------------------
+
+XBMReader::~XBMReader()
+{
+    delete[] pHexTable;
+
+    if( pAcc1 )
+        aBmp1.ReleaseAccess( pAcc1 );
+}
+
+// ------------------------------------------------------------------------
+
+void XBMReader::InitTable()
+{
+    memset( pHexTable, 0, sizeof( short ) * 256 );
+
+    pHexTable[(int)'0'] = 0;
+    pHexTable[(int)'1'] = 1;
+    pHexTable[(int)'2'] = 2;
+    pHexTable[(int)'3'] = 3;
+    pHexTable[(int)'4'] = 4;
+    pHexTable[(int)'5'] = 5;
+    pHexTable[(int)'6'] = 6;
+    pHexTable[(int)'7'] = 7;
+    pHexTable[(int)'8'] = 8;
+    pHexTable[(int)'9'] = 9;
+    pHexTable[(int)'A'] = 10;
+    pHexTable[(int)'B'] = 11;
+    pHexTable[(int)'C'] = 12;
+    pHexTable[(int)'D'] = 13;
+    pHexTable[(int)'E'] = 14;
+    pHexTable[(int)'F'] = 15;
+    pHexTable[(int)'X'] = 0;
+    pHexTable[(int)'a'] = 10;
+    pHexTable[(int)'b'] = 11;
+    pHexTable[(int)'c'] = 12;
+    pHexTable[(int)'d'] = 13;
+    pHexTable[(int)'e'] = 14;
+    pHexTable[(int)'f'] = 15;
+    pHexTable[(int)'x'] = 0;
+    pHexTable[(int)' '] =     -1;
+    pHexTable[(int)','] = -1;
+    pHexTable[(int)'}'] = -1;
+    pHexTable[(int)'\n'] = -1;
+    pHexTable[(int)'\t'] = -1;
+    pHexTable[(int)'\0'] = -1;
+}
+
+// ------------------------------------------------------------------------
+
+rtl::OString XBMReader::FindTokenLine( SvStream* pInStm, const char* pTok1,
+                                 const char* pTok2, const char* pTok3 )
+{
+    rtl::OString aRet;
+    sal_Int32 nPos1, nPos2, nPos3;
+
+    bStatus = sal_False;
+
+    do
+    {
+        if( !pInStm->ReadLine( aRet ) )
+            break;
+
+        if( pTok1 )
+        {
+            if( ( nPos1 = aRet.indexOf( pTok1 ) ) != -1 )
+            {
+                bStatus = sal_True;
+
+                if( pTok2 )
+                {
+                    bStatus = sal_False;
+
+                    if( ( ( nPos2 = aRet.indexOf( pTok2 ) ) != -1 ) &&
+                         ( nPos2 > nPos1 ) )
+                    {
+                        bStatus = sal_True;
+
+                        if( pTok3 )
+                        {
+                            bStatus = sal_False;
+
+                            if( ( ( nPos3 = aRet.indexOf( pTok3 ) ) != -1 ) && ( nPos3 > nPos2 ) )
+                                bStatus = sal_True;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    while( !bStatus );
+
+    return aRet;
+}
+
+// ------------------------------------------------------------------------
+
+long XBMReader::ParseDefine( const sal_Char* pDefine )
+{
+    long    nRet = 0;
+    char*   pTmp = (char*) pDefine;
+    unsigned char   cTmp;
+
+    // bis zum Ende gehen
+    pTmp += ( strlen( pDefine ) - 1 );
+    cTmp = *pTmp--;
+
+    // letzte Ziffer suchen
+    while( pHexTable[ cTmp ] == -1 )
+        cTmp = *pTmp--;
+
+    // bis vor die Zahl laufen
+    while( pHexTable[ cTmp ] != -1 )
+        cTmp = *pTmp--;
+
+    // auf Anfang der Zahl gehen
+    pTmp += 2;
+
+    // Hex lesen
+    if( ( pTmp[0] == '0' ) && ( ( pTmp[1] == 'X' ) || ( pTmp[1] == 'x' ) ) )
+    {
+        pTmp += 2;
+        cTmp = *pTmp++;
+
+        while ( pHexTable[ cTmp ] != -1 )
+        {
+            nRet = ( nRet << 4 ) + pHexTable[ cTmp ];
+            cTmp = *pTmp++;
+        }
+    }
+    // Dezimal lesen
+    else
+    {
+        cTmp = *pTmp++;
+        while( ( cTmp >= '0' ) && ( cTmp <= '9' ) )
+        {
+            nRet = nRet * 10 + ( cTmp - '0' );
+            cTmp = *pTmp++;
+        }
+    }
+
+    return nRet;
+}
+
+// ------------------------------------------------------------------------
+
+sal_Bool XBMReader::ParseData( SvStream* pInStm, const rtl::OString& aLastLine, XBMFormat eFormat )
+{
+    rtl::OString    aLine;
+    long            nRow = 0;
+    long            nCol = 0;
+    long            nBits = ( eFormat == XBM10 ) ? 16 : 8;
+    long            nBit;
+    sal_uInt16          nValue;
+    sal_uInt16          nDigits;
+    sal_Bool            bFirstLine = sal_True;
+
+    while( nRow < nHeight )
+    {
+        if( bFirstLine )
+        {
+            sal_Int32 nPos;
+
+            // einfuehrende geschweifte Klammer loeschen
+            if( (nPos = ( aLine = aLastLine ).indexOf('{') ) != -1 )
+                aLine = aLine.copy(nPos + 1);
+
+            bFirstLine = sal_False;
+        }
+        else if( !pInStm->ReadLine( aLine ) )
+            break;
+
+        if (!aLine.isEmpty())
+        {
+            const sal_Int32 nCount = comphelper::string::getTokenCount(aLine, ',');
+
+            for( sal_Int32 i = 0; ( i < nCount ) && ( nRow < nHeight ); ++i )
+            {
+                const rtl::OString aToken(comphelper::string::getToken(aLine,i, ','));
+                const sal_Int32 nLen = aToken.getLength();
+                sal_Bool bProcessed = sal_False;
+
+                nBit = nDigits = nValue = 0;
+
+                for (sal_Int32 n = 0; n < nLen; ++n)
+                {
+                    const unsigned char cChar = aToken[n];
+                    const short         nTable = pHexTable[ cChar ];
+
+                    if( isxdigit( cChar ) || !nTable )
+                    {
+                        nValue = ( nValue << 4 ) + nTable;
+                        nDigits++;
+                        bProcessed = sal_True;
+                    }
+                    else if( ( nTable < 0 ) && nDigits )
+                    {
+                        bProcessed = sal_True;
+                        break;
+                    }
+                }
+
+                if( bProcessed )
+                {
+                    while( ( nCol < nWidth ) && ( nBit < nBits ) )
+                        pAcc1->SetPixel( nRow, nCol++, ( nValue & ( 1 << nBit++ ) ) ? aBlack : aWhite );
+
+                    if( nCol == nWidth )
+                        nCol = 0, nRow++;
+                }
+            }
+        }
+    }
+
+    return sal_True;
+}
+
+// ------------------------------------------------------------------------
+
+ReadState XBMReader::ReadXBM( Graphic& rGraphic )
+{
+    ReadState   eReadState;
+    sal_uInt8       cDummy;
+
+    // sehen, ob wir _alles_ lesen koennen
+    rIStm.Seek( STREAM_SEEK_TO_END );
+    rIStm >> cDummy;
+
+    // falls wir nicht alles lesen koennen
+    // kehren wir zurueck und warten auf neue Daten
+    if ( rIStm.GetError() != ERRCODE_IO_PENDING )
+    {
+        rIStm.Seek( nLastPos );
+        bStatus = sal_False;
+        rtl::OString aLine = FindTokenLine( &rIStm, "#define", "_width" );
+
+        if ( bStatus )
+        {
+            int nValue;
+            if ( ( nValue = (int) ParseDefine( aLine.getStr() ) ) > 0 )
+            {
+                nWidth = nValue;
+                aLine = FindTokenLine( &rIStm, "#define", "_height" );
+
+                // Falls die Hoehe nicht folgt, suchen wir noch
+                // einmal vom Anfang der Datei an
+                if ( !bStatus )
+                {
+                    rIStm.Seek( nLastPos );
+                    aLine = FindTokenLine( &rIStm, "#define", "_height" );
+                }
+            }
+            else
+                bStatus = sal_False;
+
+            if ( bStatus )
+            {
+                if ( ( nValue = (int) ParseDefine( aLine.getStr() ) ) > 0 )
+                {
+                    nHeight = nValue;
+                    aLine = FindTokenLine( &rIStm, "static", "_bits" );
+
+                    if ( bStatus )
+                    {
+                        XBMFormat eFormat = XBM10;
+
+                        if (aLine.indexOfL(RTL_CONSTASCII_STRINGPARAM("short")) != -1)
+                            eFormat = XBM10;
+                        else if (aLine.indexOfL(RTL_CONSTASCII_STRINGPARAM("char")) != -1)
+                            eFormat = XBM11;
+                        else
+                            bStatus = sal_False;
+
+                        if ( bStatus && nWidth && nHeight )
+                        {
+                            aBmp1 = Bitmap( Size( nWidth, nHeight ), 1 );
+                            pAcc1 = aBmp1.AcquireWriteAccess();
+
+                            if( pAcc1 )
+                            {
+                                aWhite = pAcc1->GetBestMatchingColor( Color( COL_WHITE ) );
+                                aBlack = pAcc1->GetBestMatchingColor( Color( COL_BLACK ) );
+                                bStatus = ParseData( &rIStm, aLine, eFormat );
+                            }
+                            else
+                                bStatus = sal_False;
+                        }
+                    }
+                }
+            }
+        }
+
+        if( bStatus )
+        {
+            Bitmap aBlackBmp( Size( pAcc1->Width(), pAcc1->Height() ), 1 );
+
+            aBmp1.ReleaseAccess( pAcc1 ), pAcc1 = NULL;
+            aBlackBmp.Erase( Color( COL_BLACK ) );
+            rGraphic = BitmapEx( aBlackBmp, aBmp1 );
+            eReadState = XBMREAD_OK;
+        }
+        else
+            eReadState = XBMREAD_ERROR;
+    }
+    else
+    {
+        rIStm.ResetError();
+        eReadState = XBMREAD_NEED_MORE;
+    }
+
+    return eReadState;
+}
+
+// -------------
+// - ImportXBM -
+// -------------
+
+sal_Bool ImportXBM( SvStream& rStm, Graphic& rGraphic )
+{
+    XBMReader*  pXBMReader = (XBMReader*) rGraphic.GetContext();
+    ReadState   eReadState;
+    sal_Bool        bRet = sal_True;
+
+    if( !pXBMReader )
+        pXBMReader = new XBMReader( rStm );
+
+    rGraphic.SetContext( NULL );
+    eReadState = pXBMReader->ReadXBM( rGraphic );
+
+    if( eReadState == XBMREAD_ERROR )
+    {
+        bRet = sal_False;
+        delete pXBMReader;
+    }
+    else if( eReadState == XBMREAD_OK )
+        delete pXBMReader;
+    else
+        rGraphic.SetContext( pXBMReader );
+
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/ixbm/xbmread.hxx b/vcl/source/filter/ixbm/xbmread.hxx
new file mode 100644
index 000000000000..1b66f0956a76
--- /dev/null
+++ b/vcl/source/filter/ixbm/xbmread.hxx
@@ -0,0 +1,87 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef _XBMREAD_HXX
+#define _XBMREAD_HXX
+
+#include <vcl/graph.hxx>
+#include <vcl/bmpacc.hxx>
+
+#ifdef _XBMPRIVATE
+
+// ---------
+// - Enums -
+// ---------
+
+enum XBMFormat
+{
+    XBM10,
+    XBM11
+};
+
+enum ReadState
+{
+    XBMREAD_OK,
+    XBMREAD_ERROR,
+    XBMREAD_NEED_MORE
+};
+
+// -------------
+// - XBMReader -
+// -------------
+
+class XBMReader : public GraphicReader
+{
+    SvStream&           rIStm;
+    Bitmap              aBmp1;
+    BitmapWriteAccess*  pAcc1;
+    short*              pHexTable;
+    BitmapColor         aWhite;
+    BitmapColor         aBlack;
+    long                nLastPos;
+    long                nWidth;
+    long                nHeight;
+    sal_Bool                bStatus;
+
+    void                InitTable();
+    rtl::OString        FindTokenLine( SvStream* pInStm, const char* pTok1,
+                                       const char* pTok2 = NULL, const char* pTok3 = NULL );
+    long                ParseDefine( const sal_Char* pDefine );
+    sal_Bool            ParseData( SvStream* pInStm, const rtl::OString& aLastLine, XBMFormat eFormat );
+
+
+public:
+
+                        XBMReader( SvStream& rStm );
+    virtual             ~XBMReader();
+
+    ReadState           ReadXBM( Graphic& rGraphic );
+};
+
+#endif // _XBMPRIVATE
+
+// -------------
+// - ImportXBM -
+// -------------
+
+sal_Bool ImportXBM( SvStream& rStream, Graphic& rGraphic );
+
+#endif // _XBMREAD_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */