svx/source/sdr/contact/viewcontactofsdrpathobj.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
  21 #include <svx/sdr/contact/viewcontactofsdrpathobj.hxx>
  22 #include <svx/svdopath.hxx>
  23 #include <svx/sdr/primitive2d/sdrattributecreator.hxx>
  24 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  25 #include <svx/sdr/primitive2d/sdrpathprimitive2d.hxx>
  26 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  27
  28 //////////////////////////////////////////////////////////////////////////////
  29
  30 namespace sdr
  31 {
  32     namespace contact
  33     {
  34         ViewContactOfSdrPathObj::ViewContactOfSdrPathObj(SdrPathObj& rPathObj)
  35         :   ViewContactOfTextObj(rPathObj)
  36         {
  37         }
  38
  39         ViewContactOfSdrPathObj::~ViewContactOfSdrPathObj()
  40         {
  41         }
  42
  43         drawinglayer::primitive2d::Primitive2DSequence ViewContactOfSdrPathObj::createViewIndependentPrimitive2DSequence() const
  44         {
  45             const SfxItemSet& rItemSet = GetPathObj().GetMergedItemSet();
  46             const drawinglayer::attribute::SdrLineFillShadowTextAttribute aAttribute(
  47                 drawinglayer::primitive2d::createNewSdrLineFillShadowTextAttribute(
  48                     rItemSet,
  49                     GetPathObj().getText(0),
  50                     false));
  51             basegfx::B2DPolyPolygon aUnitPolyPolygon(GetPathObj().GetPathPoly());
  52             Point aGridOff = GetPathObj().GetGridOffset();
  53             // Hack for calc, transform position of object according
  54             // to current zoom so as objects relative position to grid
  55             // appears stable
  56             aUnitPolyPolygon.transform( basegfx::tools::createTranslateB2DHomMatrix( aGridOff.X(), aGridOff.Y() ) );
  57             sal_uInt32 nPolyCount(aUnitPolyPolygon.count());
  58             sal_uInt32 nPointCount(0);
  59
  60             for(sal_uInt32 a(0); a < nPolyCount; a++)
  61             {
  62                 nPointCount += aUnitPolyPolygon.getB2DPolygon(a).count();
  63             }
  64
  65             if(!nPointCount)
  66             {
  67                 OSL_FAIL("PolyPolygon object without geometry detected, this should not be created (!)");
  68                 basegfx::B2DPolygon aFallbackLine;
  69                 aFallbackLine.append(basegfx::B2DPoint(0.0, 0.0));
  70                 aFallbackLine.append(basegfx::B2DPoint(1000.0, 1000.0));
  71                 aUnitPolyPolygon = basegfx::B2DPolyPolygon(aFallbackLine);
  72
  73                 nPolyCount = 1;
  74             }
  75
  76             // prepare object transformation and unit polygon (direct model data)
  77             basegfx::B2DHomMatrix aObjectMatrix;
  78             const bool bIsLine(
  79                 !aUnitPolyPolygon.areControlPointsUsed()
  80                 && 1 == nPolyCount
  81                 && 2 == aUnitPolyPolygon.getB2DPolygon(0).count());
  82
  83             if(bIsLine)
  84             {
  85                 // special handling for single line mode (2 points)
  86                 const basegfx::B2DPolygon aSubPolygon(aUnitPolyPolygon.getB2DPolygon(0));
  87                 const basegfx::B2DPoint aStart(aSubPolygon.getB2DPoint(0));
  88                 const basegfx::B2DPoint aEnd(aSubPolygon.getB2DPoint(1));
  89                 const basegfx::B2DVector aLine(aEnd - aStart);
  90
  91                 // #i102548# create new unit polygon for line (horizontal)
  92                 basegfx::B2DPolygon aNewPolygon;
  93                 aNewPolygon.append(basegfx::B2DPoint(0.0, 0.0));
  94                 aNewPolygon.append(basegfx::B2DPoint(1.0, 0.0));
  95                 aUnitPolyPolygon.setB2DPolygon(0, aNewPolygon);
  96
  97                 // #i102548# fill objectMatrix with rotation and offset (no shear for lines)
  98                 aObjectMatrix = basegfx::tools::createScaleShearXRotateTranslateB2DHomMatrix(
  99                     aLine.getLength(), 1.0,
 100                     0.0,
 101                     atan2(aLine.getY(), aLine.getX()),
 102                     aStart.getX(), aStart.getY());
 103             }
 104             else
 105             {
 106                 // #i102548# create unscaled, unsheared, unrotated and untranslated polygon
 107                 // (unit polygon) by creating the object matrix and back-transforming the polygon
 108                 const basegfx::B2DRange aObjectRange(basegfx::tools::getRange(aUnitPolyPolygon));
 109                 const GeoStat& rGeoStat(GetPathObj().GetGeoStat());
 110                 const double fWidth(aObjectRange.getWidth());
 111                 const double fHeight(aObjectRange.getHeight());
 112                 const double fScaleX(basegfx::fTools::equalZero(fWidth) ? 1.0 : fWidth);
 113                 const double fScaleY(basegfx::fTools::equalZero(fHeight) ? 1.0 : fHeight);
 114
 115                 aObjectMatrix = basegfx::tools::createScaleShearXRotateTranslateB2DHomMatrix(
 116                     fScaleX, fScaleY,
 117                     rGeoStat.nShearWink ? tan((36000 - rGeoStat.nShearWink) * F_PI18000) : 0.0,
 118                     rGeoStat.nDrehWink ? (36000 - rGeoStat.nDrehWink) * F_PI18000 : 0.0,
 119                     aObjectRange.getMinX(), aObjectRange.getMinY());
 120
 121                 // ceate unit polygon from object's absolute path
 122                 basegfx::B2DHomMatrix aInverse(aObjectMatrix);
 123                 aInverse.invert();
 124                 aUnitPolyPolygon.transform(aInverse);
 125             }
 126
 127             // create primitive. Always create primitives to allow the decomposition of
 128             // SdrPathPrimitive2D to create needed invisible elements for HitTest and/or BoundRect
 129             const drawinglayer::primitive2d::Primitive2DReference xReference(
 130                 new drawinglayer::primitive2d::SdrPathPrimitive2D(
 131                     aObjectMatrix,
 132                     aAttribute,
 133                     aUnitPolyPolygon));
 134
 135             return drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
 136         }
 137     } // end of namespace contact
 138 } // end of namespace sdr
 139
 140 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */