drawinglayer/source/tools/emfppath.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 <basegfx/point/b2dpoint.hxx>
  21 #include <basegfx/polygon/b2dpolygon.hxx>
  22 #include <basegfx/polygon/b2dpolypolygon.hxx>
  23 #include <sal/log.hxx>
  24 #include "emfppath.hxx"
  25
  26 namespace emfplushelper
  27 {
  28     EMFPPath::EMFPPath (sal_Int32 _nPoints, bool bLines)
  29     {
  30         if (_nPoints<0 || sal_uInt32(_nPoints)>SAL_MAX_INT32 / (2 * sizeof(float)))
  31         {
  32             _nPoints = SAL_MAX_INT32 / (2 * sizeof(float));
  33         }
  34
  35         nPoints = _nPoints;
  36         pPoints.reset( new float [nPoints*2] );
  37
  38         if (!bLines)
  39             pPointTypes.reset( new sal_uInt8 [_nPoints] );
  40     }
  41
  42     EMFPPath::~EMFPPath ()
  43     {
  44     }
  45
  46     void EMFPPath::Read (SvStream& s, sal_uInt32 pathFlags)
  47     {
  48         for (int i = 0; i < nPoints; i ++)
  49         {
  50             if (pathFlags & 0x800)
  51             {
  52                 // EMFPlusPointR: points are stored in EMFPlusInteger7 or
  53                 // EMFPlusInteger15 objects, see section 2.2.2.21/22
  54                 // If 0x800 bit is set, the 0x4000 bit is undefined and must be ignored
  55                 SAL_WARN("drawinglayer", "EMF+\t\t TODO - parse EMFPlusPointR object (section 2.2.1.6)");
  56             }
  57             else if (pathFlags & 0x4000)
  58             {
  59                 // EMFPlusPoint: stored in signed short 16bit integer format
  60                 sal_Int16 x, y;
  61
  62                 s.ReadInt16( x ).ReadInt16( y );
  63                 SAL_INFO ("drawinglayer", "EMF+\t EMFPlusPoint [x,y]: " << x << "," << y);
  64                 pPoints [i*2] = x;
  65                 pPoints [i*2 + 1] = y;
  66             }
  67             else
  68             {
  69                 // EMFPlusPointF: stored in Single (float) format
  70                 s.ReadFloat( pPoints [i*2] ).ReadFloat( pPoints [i*2 + 1] );
  71                 SAL_INFO ("drawinglayer", "EMF+\t EMFPlusPointF [x,y]: " << pPoints [i*2] << "," << pPoints [i*2 + 1]);
  72             }
  73         }
  74
  75         if (pPointTypes)
  76         {
  77             for (int i = 0; i < nPoints; i++)
  78             {
  79                 s.ReadUChar(pPointTypes[i]);
  80                 SAL_INFO("drawinglayer", "EMF+\tpoint type: " << static_cast<int>(pPointTypes[i]));
  81             }
  82         }
  83
  84         aPolygon.clear();
  85     }
  86
  87     ::basegfx::B2DPolyPolygon& EMFPPath::GetPolygon (EmfPlusHelperData const & rR, bool bMapIt, bool bAddLineToCloseShape)
  88     {
  89         ::basegfx::B2DPolygon polygon;
  90         aPolygon.clear ();
  91         int last_normal = 0, p = 0;
  92         ::basegfx::B2DPoint prev, mapped;
  93         bool hasPrev = false;
  94
  95         for (int i = 0; i < nPoints; i ++)
  96         {
  97             if (p && pPointTypes && (pPointTypes [i] == 0))
  98             {
  99                 aPolygon.append (polygon);
 100                 last_normal = i;
 101                 p = 0;
 102                 polygon.clear ();
 103             }
 104
 105             if (bMapIt)
 106                 mapped = rR.Map (pPoints [i*2], pPoints [i*2 + 1]);
 107             else
 108                 mapped = ::basegfx::B2DPoint (pPoints [i*2], pPoints [i*2 + 1]);
 109
 110             if (pPointTypes)
 111             {
 112                 if ((pPointTypes [i] & 0x07) == 3)
 113                 {
 114                     if (((i - last_normal )% 3) == 1)
 115                     {
 116                         polygon.setNextControlPoint (p - 1, mapped);
 117                         SAL_INFO ("drawinglayer", "polygon append  next: " << p - 1 << " mapped: " << mapped.getX () << "," << mapped.getY ());
 118                         continue;
 119                     }
 120                     else if (((i - last_normal) % 3) == 2)
 121                     {
 122                         prev = mapped;
 123                         hasPrev = true;
 124                         continue;
 125                     }
 126                 }
 127                 else
 128                 {
 129                     last_normal = i;
 130                 }
 131             }
 132
 133             polygon.append (mapped);
 134             SAL_INFO ("drawinglayer", "polygon append point: " << pPoints [i*2] << "," << pPoints [i*2 + 1] << " mapped: " << mapped.getX () << ":" << mapped.getY ());
 135
 136             if (hasPrev)
 137             {
 138                 polygon.setPrevControlPoint (p, prev);
 139                 SAL_INFO ("drawinglayer", "polygon append  prev: " << p << " mapped: " << prev.getX () << "," << prev.getY ());
 140                 hasPrev = false;
 141             }
 142
 143             p ++;
 144
 145             if (pPointTypes && (pPointTypes [i] & 0x80))
 146             {
 147                 // closed polygon
 148                 polygon.setClosed (true);
 149                 aPolygon.append (polygon);
 150                 SAL_INFO ("drawinglayer", "close polygon");
 151                 last_normal = i + 1;
 152                 p = 0;
 153                 polygon.clear ();
 154             }
 155         }
 156
 157         // Draw an extra line between the last point and the first point, to close the shape.
 158         if (bAddLineToCloseShape)
 159         {
 160             polygon.setClosed (true);
 161         }
 162
 163         if (polygon.count ())
 164         {
 165             aPolygon.append (polygon);
 166
 167 #if OSL_DEBUG_LEVEL > 1
 168             for (unsigned int i=0; i<aPolygon.count(); i++) {
 169                 polygon = aPolygon.getB2DPolygon(i);
 170                 SAL_INFO ("drawinglayer", "polygon: " << i);
 171                 for (unsigned int j=0; j<polygon.count(); j++) {
 172                     ::basegfx::B2DPoint point = polygon.getB2DPoint(j);
 173                     SAL_INFO ("drawinglayer", "point: " << point.getX() << "," << point.getY());
 174                     if (polygon.isPrevControlPointUsed(j)) {
 175                         point = polygon.getPrevControlPoint(j);
 176                         SAL_INFO ("drawinglayer", "prev: " << point.getX() << "," << point.getY());
 177                     }
 178                     if (polygon.isNextControlPointUsed(j)) {
 179                         point = polygon.getNextControlPoint(j);
 180                         SAL_INFO ("drawinglayer", "next: " << point.getX() << "," << point.getY());
 181                     }
 182                 }
 183             }
 184 #endif
 185         }
 186
 187         return aPolygon;
 188     }
 189 }
 190
 191 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */