LCOV - code coverage report
Current view: top level - vcl/generic/glyphs - gcach_rbmp.cxx (source / functions) Hit Total Coverage
Test: commit c8344322a7af75b84dd3ca8f78b05543a976dfd5 Lines: 51 124 41.1 %
Date: 2015-06-13 12:38:46 Functions: 6 9 66.7 %
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             : #include "generic/glyphcache.hxx"
      21             : #include <string.h>
      22             : 
      23       13470 : RawBitmap::RawBitmap()
      24             :     : mnAllocated(0)
      25             :     , mnWidth(0)
      26             :     , mnHeight(0)
      27             :     , mnScanlineSize(0)
      28             :     , mnBitCount(0)
      29             :     , mnXOffset(0)
      30       13470 :     , mnYOffset(0)
      31             : {
      32       13470 : }
      33             : 
      34           8 : RawBitmap::~RawBitmap()
      35           8 : {}
      36             : 
      37             : // used by 90 and 270 degree rotations on 8 bit deep bitmaps
      38         202 : static void ImplRotate8_90( unsigned char* p1, const unsigned char* p2,
      39             :     int xmax, int ymax, int dx, int dy, int nPad )
      40             : {
      41        3777 :     for( int y = ymax; --y >= 0; p2 += dy )
      42             :     {
      43      161064 :         for( int x = xmax; --x >= 0; p2 += dx )
      44      157489 :             *(p1++) = *p2;
      45       12901 :         for( int i = nPad; --i >= 0; )
      46        5751 :             *(p1++) = 0;
      47             :     }
      48         202 : }
      49             : 
      50             : // used by inplace 180 degree rotation on 8 bit deep bitmaps
      51           0 : static void ImplRotate8_180( unsigned char* p1, int xmax, int ymax, int nPad )
      52             : {
      53           0 :     unsigned char* p2 = p1 + ymax * (xmax + nPad);
      54           0 :     for( int y = ymax/2; --y >= 0; )
      55             :     {
      56           0 :         p2 -= nPad;
      57           0 :         for( int x = xmax; --x >= 0; )
      58             :         {
      59           0 :             unsigned char cTmp = *(--p2);
      60           0 :             *p2 = *p1;
      61           0 :             *(p1++) = cTmp;
      62             :         }
      63           0 :         p1 += nPad;
      64             :     }
      65             : 
      66             :     // reverse middle line
      67           0 :     p2 -= nPad;
      68           0 :     while( p1 < p2 )
      69             :     {
      70           0 :         unsigned char cTmp = *(--p2);
      71           0 :         *p2 = *p1;
      72           0 :         *(p1++) = cTmp;
      73             :     }
      74           0 : }
      75             : 
      76             : // used by 90 or 270 degree rotations on 1 bit deep bitmaps
      77           0 : static void ImplRotate1_90( unsigned char* p1, const unsigned char* p2,
      78             :     int xmax, int ymax, int dx, int nShift, int nDeltaShift, int nPad )
      79             : {
      80           0 :     for( int y = ymax; --y >= 0; )
      81             :     {
      82           0 :         unsigned nTemp = 1;
      83           0 :         const unsigned char* p20 = p2;
      84           0 :         for( int x = xmax; --x >= 0; p2 += dx )
      85             :         {
      86             :             // build bitwise and store when byte finished
      87           0 :            nTemp += nTemp + ((*p2 >> nShift) & 1);
      88           0 :             if( nTemp >= 0x100U )
      89             :             {
      90           0 :                 *(p1++) = (unsigned char)nTemp;
      91           0 :                 nTemp = 1;
      92             :             }
      93             :         }
      94           0 :         p2 = p20;
      95             : 
      96             :         // store left aligned remainder if needed
      97           0 :         if( nTemp > 1 )
      98             :         {
      99           0 :             for(; nTemp < 0x100U; nTemp += nTemp ) ;
     100           0 :             *(p1++) = (unsigned char)nTemp;
     101             :         }
     102             :         // pad scanline with zeroes
     103           0 :         for( int i = nPad; --i >= 0;)
     104           0 :             *(p1++) = 0;
     105             : 
     106             :         // increase/decrease shift, but keep bound inside 0 to 7
     107           0 :         nShift += nDeltaShift;
     108           0 :         if( nShift != (nShift & 7) )
     109           0 :             p2 -= nDeltaShift;
     110           0 :         nShift &= 7;
     111             :     }
     112           0 : }
     113             : 
     114             : // used by 180 degrees rotations on 1 bit deep bitmaps
     115           0 : static void ImplRotate1_180( unsigned char* p1, const unsigned char* p2,
     116             :     int xmax, int ymax, int nPad )
     117             : {
     118           0 :     --p2;
     119           0 :     for( int y = ymax; --y >= 0; )
     120             :     {
     121           0 :         p2 -= nPad;
     122             : 
     123           0 :         unsigned nTemp = 1;
     124           0 :         unsigned nInp = (0x100 + *p2) >> (-xmax & 7);
     125           0 :         for( int x = xmax; --x >= 0; )
     126             :         {
     127             :             // build bitwise and store when byte finished
     128           0 :             nTemp += nTemp + (nInp & 1);
     129           0 :             if( nTemp >= 0x100 )
     130             :             {
     131           0 :                 *(p1++) = (unsigned char)nTemp;
     132           0 :                 nTemp = 1;
     133             :             }
     134             :             // update input byte if needed (and available)
     135           0 :             if( (nInp >>= 1) <= 1 && ((y != 0) || (x != 0)) )
     136           0 :                 nInp = 0x100 + *(--p2);
     137             :         }
     138             : 
     139             :         // store left aligned remainder if needed
     140           0 :         if( nTemp > 1 )
     141             :         {
     142           0 :             for(; nTemp < 0x100; nTemp += nTemp ) ;
     143           0 :             *(p1++) = (unsigned char)nTemp;
     144             :         }
     145             :         // scanline pad is already clean
     146           0 :         p1 += nPad;
     147             :     }
     148           0 : }
     149             : 
     150         202 : bool RawBitmap::Rotate( int nAngle )
     151             : {
     152         202 :     sal_uLong nNewScanlineSize = 0;
     153         202 :     sal_uLong nNewHeight = 0;
     154         202 :     sal_uLong nNewWidth = 0;
     155             : 
     156             :     // do inplace rotation or prepare double buffered rotation
     157         202 :     switch( nAngle )
     158             :     {
     159             :         case 0:     // nothing to do
     160             :         case 3600:
     161           0 :             return true;
     162             :         default:    // non rectangular angles not allowed
     163           0 :             return false;
     164             :         case 1800:  // rotate by 180 degrees
     165           0 :             mnXOffset = -(mnXOffset + mnWidth);
     166           0 :             mnYOffset = -(mnYOffset + mnHeight);
     167           0 :             if( mnBitCount == 8 )
     168             :             {
     169           0 :                 ImplRotate8_180( mpBits.get(), mnWidth, mnHeight, mnScanlineSize-mnWidth );
     170           0 :                 return true;
     171             :             }
     172           0 :             nNewWidth        = mnWidth;
     173           0 :             nNewHeight       = mnHeight;
     174           0 :             nNewScanlineSize = mnScanlineSize;
     175           0 :             break;
     176             :         case +900:  // left by 90 degrees
     177             :         case -900:
     178             :         case 2700:  // right by 90 degrees
     179         202 :             nNewWidth        = mnHeight;
     180         202 :             nNewHeight       = mnWidth;
     181         202 :             if( mnBitCount==1 )
     182           0 :                 nNewScanlineSize = (nNewWidth + 7) / 8;
     183             :             else
     184         202 :                 nNewScanlineSize = (nNewWidth + 3) & -4;
     185         202 :             break;
     186             :     }
     187             : 
     188         202 :     unsigned int nBufSize = nNewHeight * nNewScanlineSize;
     189         202 :     unsigned char* pBuf = new unsigned char[ nBufSize ];
     190         202 :     if( !pBuf )
     191           0 :         return false;
     192             : 
     193         202 :     memset( pBuf, 0, nBufSize );
     194             :     int i;
     195             : 
     196             :     // dispatch non-inplace rotations
     197         202 :     switch( nAngle )
     198             :     {
     199             :         case 1800:  // rotate by 180 degrees
     200             :             // we know we only need to deal with 1 bit depth
     201           0 :             ImplRotate1_180( pBuf, mpBits.get() + mnHeight * mnScanlineSize,
     202           0 :                 mnWidth, mnHeight, mnScanlineSize - (mnWidth + 7) / 8 );
     203           0 :             break;
     204             :         case +900:  // rotate left by 90 degrees
     205         119 :             i = mnXOffset;
     206         119 :             mnXOffset = mnYOffset;
     207         119 :             mnYOffset = -nNewHeight - i;
     208         119 :             if( mnBitCount == 8 )
     209         119 :                 ImplRotate8_90( pBuf, mpBits.get() + mnWidth - 1,
     210             :                     nNewWidth, nNewHeight, +mnScanlineSize, -1-mnHeight*mnScanlineSize,
     211         238 :                     nNewScanlineSize - nNewWidth );
     212             :             else
     213           0 :                 ImplRotate1_90( pBuf, mpBits.get() + (mnWidth - 1) / 8,
     214             :                     nNewWidth, nNewHeight, +mnScanlineSize,
     215           0 :                     (-mnWidth & 7), +1, nNewScanlineSize - (nNewWidth + 7) / 8 );
     216         119 :             break;
     217             :         case 2700:  // rotate right by 90 degrees
     218             :         case -900:
     219          83 :             i = mnXOffset;
     220          83 :             mnXOffset = -(nNewWidth + mnYOffset);
     221          83 :             mnYOffset = i;
     222          83 :             if( mnBitCount == 8 )
     223         166 :                 ImplRotate8_90( pBuf, mpBits.get() + mnScanlineSize * (mnHeight-1),
     224             :                     nNewWidth, nNewHeight, -mnScanlineSize, +1+mnHeight*mnScanlineSize,
     225         249 :                     nNewScanlineSize - nNewWidth );
     226             :             else
     227           0 :                 ImplRotate1_90( pBuf, mpBits.get() + mnScanlineSize * (mnHeight-1),
     228             :                     nNewWidth, nNewHeight, -mnScanlineSize,
     229           0 :                     +7, -1, nNewScanlineSize - (nNewWidth + 7) / 8 );
     230          83 :             break;
     231             :     }
     232             : 
     233         202 :     mnWidth        = nNewWidth;
     234         202 :     mnHeight       = nNewHeight;
     235         202 :     mnScanlineSize = nNewScanlineSize;
     236             : 
     237         202 :     if( nBufSize < mnAllocated )
     238             :     {
     239         199 :         memcpy( mpBits.get(), pBuf, nBufSize );
     240         199 :         delete[] pBuf;
     241             :     }
     242             :     else
     243             :     {
     244           3 :         mpBits.reset(pBuf);
     245           3 :         mnAllocated = nBufSize;
     246             :     }
     247             : 
     248         202 :     return true;
     249         801 : }
     250             : 
     251             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

Generated by: LCOV version 1.11