drawinglayer/source/tools/emfpregion.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/range/b2drectangle.hxx>
  22 #include <basegfx/polygon/b2dpolygon.hxx>
  23 #include <basegfx/polygon/b2dpolygontools.hxx>
  24 #include <basegfx/polygon/b2dpolypolygon.hxx>
  25 #include <sal/log.hxx>
  26 #include "emfpregion.hxx"
  27 #include "emfppath.hxx"
  28
  29 namespace emfplushelper
  30 {
  31     EMFPRegion::EMFPRegion()
  32     {
  33     }
  34
  35     EMFPRegion::~EMFPRegion()
  36     {
  37     }
  38
  39     ::basegfx::B2DPolyPolygon EMFPRegion::ReadRegionNode(SvStream& s, EmfPlusHelperData& rR)
  40     {
  41         // Regions are specified as a binary tree of region nodes, and each node must either be a terminal node
  42         // (RegionNodeDataTypeRect, RegionNodeDataTypePath, RegionNodeDataTypeEmpty, RegionNodeDataTypeInfinite)
  43         // or specify one or two child nodes
  44         // (RegionNodeDataTypeAnd, RegionNodeDataTypeOr, RegionNodeDataTypeXor,
  45         // RegionNodeDataTypeExclude, RegionNodeDataTypeComplement).
  46         sal_uInt32 dataType;
  47         ::basegfx::B2DPolyPolygon polygon;
  48         s.ReadUInt32(dataType);
  49         SAL_INFO("drawinglayer.emf", "EMF+\t Region node data type 0x" << std::hex << dataType << std::dec);
  50
  51         switch (dataType)
  52         {
  53         case RegionNodeDataTypeAnd: // CombineModeIntersect
  54         case RegionNodeDataTypeOr: // CombineModeUnion
  55         case RegionNodeDataTypeXor: // CombineModeXOR
  56         case RegionNodeDataTypeExclude: // CombineModeExclude
  57         case RegionNodeDataTypeComplement: // CombineModeComplement
  58         {
  59             ::basegfx::B2DPolyPolygon leftPolygon = ReadRegionNode(s, rR);
  60             ::basegfx::B2DPolyPolygon rightPolygon = ReadRegionNode(s, rR);
  61             polygon = EmfPlusHelperData::combineClip(leftPolygon, dataType, rightPolygon);
  62             break;
  63         }
  64         case RegionNodeDataTypeRect:
  65         {
  66             float dx, dy, dw, dh;
  67             s.ReadFloat(dx).ReadFloat(dy).ReadFloat(dw).ReadFloat(dh);
  68             SAL_INFO("drawinglayer.emf", "EMF+\t\t RegionNodeDataTypeRect x:" << dx << ", y:" << dy <<
  69                      ", width:" << dw << ", height:" << dh);
  70
  71             const ::basegfx::B2DPoint mappedStartPoint(rR.Map(dx, dy));
  72             const ::basegfx::B2DPoint mappedEndPoint(rR.Map(dx + dw, dy + dh));
  73             polygon = ::basegfx::B2DPolyPolygon(
  74                     ::basegfx::utils::createPolygonFromRect(
  75                         ::basegfx::B2DRectangle(
  76                             mappedStartPoint.getX(),
  77                             mappedStartPoint.getY(),
  78                             mappedEndPoint.getX(),
  79                             mappedEndPoint.getY())));
  80             break;
  81         }
  82         case RegionNodeDataTypePath:
  83         {
  84             sal_Int32 pathLength;
  85             s.ReadInt32(pathLength);
  86             SAL_INFO("drawinglayer.emf", "EMF+\t\t RegionNodeDataTypePath, Path Length: " << pathLength << " bytes");
  87
  88             sal_uInt32 header, pathFlags;
  89             sal_Int32 points;
  90
  91             s.ReadUInt32(header).ReadInt32(points).ReadUInt32(pathFlags);
  92             SAL_INFO("drawinglayer.emf", "EMF+\t\t header: 0x" << std::hex << header <<
  93                      " points: " << std::dec << points << " additional flags: 0x" << std::hex << pathFlags << std::dec);
  94
  95             EMFPPath path(points);
  96             path.Read(s, pathFlags);
  97             polygon = path.GetPolygon(rR);
  98             break;
  99         }
 100         case RegionNodeDataTypeEmpty:
 101         {
 102             SAL_INFO("drawinglayer.emf", "EMF+\t\t RegionNodeDataTypeEmpty");
 103             SAL_WARN("drawinglayer.emf", "EMF+\t\t TODO we need to set empty polygon here");
 104             polygon = ::basegfx::B2DPolyPolygon();
 105
 106             break;
 107         }
 108         case RegionNodeDataTypeInfinite:
 109         {
 110             SAL_INFO("drawinglayer.emf", "EMF+\t\t RegionNodeDataTypeInfinite");
 111             polygon = ::basegfx::B2DPolyPolygon();
 112             break;
 113         }
 114         default:
 115         {
 116             SAL_WARN("drawinglayer.emf", "EMF+\t\t Unhandled region type: 0x" << std::hex << dataType << std::dec);
 117             polygon = ::basegfx::B2DPolyPolygon();
 118         }
 119         }
 120         return polygon;
 121     }
 122
 123     void EMFPRegion::ReadRegion(SvStream& s, EmfPlusHelperData& rR)
 124     {
 125         sal_uInt32 header, count;
 126         s.ReadUInt32(header).ReadUInt32(count);
 127         // An array should be RegionNodeCount+1 of EmfPlusRegionNode objects.
 128         SAL_INFO("drawinglayer.emf", "EMF+\t version: 0x" << std::hex << header << std::dec << ", region node count: " << count);
 129
 130         regionPolyPolygon = ReadRegionNode(s, rR);
 131     }
 132 }
 133
 134 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */