svx/source/svdraw/sdrhittesthelper.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.
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   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/sdrhittesthelper.hxx>
  22 #include <svx/obj3d.hxx>
  23 #include <svx/helperhittest3d.hxx>
  24 #include <svx/sdrpagewindow.hxx>
  25 #include <svx/sdr/contact/viewobjectcontact.hxx>
  26 #include <svx/sdr/contact/displayinfo.hxx>
  27 #include <svx/sdr/contact/objectcontact.hxx>
  28 #include <drawinglayer/processor2d/hittestprocessor2d.hxx>
  29 #include <svx/svdpagv.hxx>
  30 #include <svx/sdr/contact/viewcontact.hxx>
  31
  32
  33 // #i101872# new Object HitTest as View-tooling
  34
  35 SdrObject* SdrObjectPrimitiveHit(
  36     const SdrObject& rObject,
  37     const Point& rPnt,
  38     sal_uInt16 nTol,
  39     const SdrPageView& rSdrPageView,
  40     const SetOfByte* pVisiLayer,
  41     bool bTextOnly)
  42 {
  43     SdrObject* pResult = 0;
  44
  45     if(rObject.GetSubList() && rObject.GetSubList()->GetObjCount())
  46     {
  47         // group or scene with content. Single 3D objects also have a
  48         // true == rObject.GetSubList(), but no content
  49         pResult = SdrObjListPrimitiveHit(*rObject.GetSubList(), rPnt, nTol, rSdrPageView, pVisiLayer, bTextOnly);
  50     }
  51     else
  52     {
  53         if( rObject.IsVisible() && (!pVisiLayer || pVisiLayer->IsSet(rObject.GetLayer())))
  54         {
  55             // single object, 3d object, empty scene or empty group. Check if
  56             // it's a single 3D object
  57             const E3dCompoundObject* pE3dCompoundObject = dynamic_cast< const E3dCompoundObject* >(&rObject);
  58
  59             if(pE3dCompoundObject)
  60             {
  61                 const basegfx::B2DPoint aHitPosition(rPnt.X(), rPnt.Y());
  62
  63                 if(checkHitSingle3DObject(aHitPosition, *pE3dCompoundObject))
  64                 {
  65                     pResult = const_cast< E3dCompoundObject* >(pE3dCompoundObject);
  66                 }
  67             }
  68             else
  69             {
  70                 // not a single 3D object; Check in first PageWindow using prmitives (only SC
  71                 // with split views uses multiple PageWindows nowadays)
  72                 if(rSdrPageView.PageWindowCount())
  73                 {
  74                     const double fLogicTolerance(nTol);
  75                     const basegfx::B2DPoint aHitPosition(rPnt.X(), rPnt.Y());
  76                     const sdr::contact::ViewObjectContact& rVOC = rObject.GetViewContact().GetViewObjectContact(
  77                         rSdrPageView.GetPageWindow(0)->GetObjectContact());
  78
  79                     if(ViewObjectContactPrimitiveHit(rVOC, aHitPosition, fLogicTolerance, bTextOnly))
  80                     {
  81                           pResult = const_cast< SdrObject* >(&rObject);
  82                     }
  83                 }
  84             }
  85         }
  86     }
  87
  88     return pResult;
  89 }
  90
  91
  92
  93 SdrObject* SdrObjListPrimitiveHit(
  94     const SdrObjList& rList,
  95     const Point& rPnt,
  96     sal_uInt16 nTol,
  97     const SdrPageView& rSdrPageView,
  98     const SetOfByte* pVisiLayer,
  99     bool bTextOnly)
 100 {
 101     sal_uInt32 nObjNum(rList.GetObjCount());
 102     SdrObject* pRetval = 0;
 103
 104     while(!pRetval && nObjNum > 0)
 105     {
 106         nObjNum--;
 107         SdrObject* pObj = rList.GetObj(nObjNum);
 108
 109         pRetval = SdrObjectPrimitiveHit(*pObj, rPnt, nTol, rSdrPageView, pVisiLayer, bTextOnly);
 110     }
 111
 112     return pRetval;
 113 }
 114
 115
 116
 117 bool ViewObjectContactPrimitiveHit(
 118     const sdr::contact::ViewObjectContact& rVOC,
 119     const basegfx::B2DPoint& rHitPosition,
 120     double fLogicHitTolerance,
 121     bool bTextOnly)
 122 {
 123     basegfx::B2DRange aObjectRange(rVOC.getObjectRange());
 124
 125     if(!aObjectRange.isEmpty())
 126     {
 127         // first do a rough B2DRange based HitTest; do not forget to
 128         // include the HitTolerance if given
 129         if(basegfx::fTools::more(fLogicHitTolerance, 0.0))
 130         {
 131             aObjectRange.grow(fLogicHitTolerance);
 132         }
 133
 134         if(aObjectRange.isInside(rHitPosition))
 135         {
 136             // get primitive sequence
 137             sdr::contact::DisplayInfo aDisplayInfo;
 138             const drawinglayer::primitive2d::Primitive2DSequence& rSequence(rVOC.getPrimitive2DSequence(aDisplayInfo));
 139
 140             if(rSequence.hasElements())
 141             {
 142                 // create a HitTest processor
 143                 const drawinglayer::geometry::ViewInformation2D& rViewInformation2D = rVOC.GetObjectContact().getViewInformation2D();
 144                 drawinglayer::processor2d::HitTestProcessor2D aHitTestProcessor2D(
 145                     rViewInformation2D,
 146                     rHitPosition,
 147                     fLogicHitTolerance,
 148                     bTextOnly);
 149
 150                 // feed it with the primitives
 151                 aHitTestProcessor2D.process(rSequence);
 152
 153                 // deliver result
 154                 return aHitTestProcessor2D.getHit();
 155             }
 156         }
 157     }
 158
 159     return false;
 160 }
 161
 162 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */