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/svdpage.hxx>
  25 #include <svx/sdrpagewindow.hxx>
  26 #include <svx/sdr/contact/viewobjectcontact.hxx>
  27 #include <svx/sdr/contact/displayinfo.hxx>
  28 #include <svx/sdr/contact/objectcontact.hxx>
  29 #include <drawinglayer/processor2d/hittestprocessor2d.hxx>
  30 #include <svx/svdpagv.hxx>
  31 #include <svx/sdr/contact/viewcontact.hxx>
  32
  33
  34 // #i101872# new Object HitTest as View-tooling
  35
  36 SdrObject* SdrObjectPrimitiveHit(
  37     const SdrObject& rObject,
  38     const Point& rPnt,
  39     sal_uInt16 nTol,
  40     const SdrPageView& rSdrPageView,
  41     const SdrLayerIDSet* pVisiLayer,
  42     bool bTextOnly,
  43     drawinglayer::primitive2d::Primitive2DContainer* pHitContainer)
  44 {
  45     SdrObject* pResult = nullptr;
  46
  47     if(rObject.GetSubList() && rObject.GetSubList()->GetObjCount())
  48     {
  49         // group or scene with content. Single 3D objects also have a
  50         // true == rObject.GetSubList(), but no content
  51         pResult = SdrObjListPrimitiveHit(*rObject.GetSubList(), rPnt, nTol, rSdrPageView, pVisiLayer, bTextOnly);
  52     }
  53     else
  54     {
  55         if( rObject.IsVisible() && (!pVisiLayer || pVisiLayer->IsSet(rObject.GetLayer())))
  56         {
  57             // single object, 3d object, empty scene or empty group. Check if
  58             // it's a single 3D object
  59             const E3dCompoundObject* pE3dCompoundObject = dynamic_cast< const E3dCompoundObject* >(&rObject);
  60
  61             if(pE3dCompoundObject)
  62             {
  63                 const basegfx::B2DPoint aHitPosition(rPnt.X(), rPnt.Y());
  64
  65                 if(checkHitSingle3DObject(aHitPosition, *pE3dCompoundObject))
  66                 {
  67                     pResult = const_cast< E3dCompoundObject* >(pE3dCompoundObject);
  68                 }
  69             }
  70             else
  71             {
  72                 // not a single 3D object; Check in first PageWindow using primitives (only SC
  73                 // with split views uses multiple PageWindows nowadays)
  74                 if(rSdrPageView.PageWindowCount())
  75                 {
  76                     const double fLogicTolerance(nTol);
  77                     const basegfx::B2DPoint aHitPosition(rPnt.X(), rPnt.Y());
  78                     const sdr::contact::ViewObjectContact& rVOC = rObject.GetViewContact().GetViewObjectContact(
  79                         rSdrPageView.GetPageWindow(0)->GetObjectContact());
  80
  81                     if(ViewObjectContactPrimitiveHit(rVOC, aHitPosition, fLogicTolerance, bTextOnly, pHitContainer))
  82                     {
  83                           pResult = const_cast< SdrObject* >(&rObject);
  84                     }
  85                 }
  86             }
  87         }
  88     }
  89
  90     return pResult;
  91 }
  92
  93
  94 SdrObject* SdrObjListPrimitiveHit(
  95     const SdrObjList& rList,
  96     const Point& rPnt,
  97     sal_uInt16 nTol,
  98     const SdrPageView& rSdrPageView,
  99     const SdrLayerIDSet* pVisiLayer,
 100     bool bTextOnly)
 101 {
 102     size_t nObjNum(rList.GetObjCount());
 103     SdrObject* pRetval = nullptr;
 104
 105     while(!pRetval && nObjNum > 0)
 106     {
 107         nObjNum--;
 108         SdrObject* pObj = rList.GetObj(nObjNum);
 109
 110         pRetval = SdrObjectPrimitiveHit(*pObj, rPnt, nTol, rSdrPageView, pVisiLayer, bTextOnly);
 111     }
 112
 113     return pRetval;
 114 }
 115
 116
 117 bool ViewObjectContactPrimitiveHit(
 118     const sdr::contact::ViewObjectContact& rVOC,
 119     const basegfx::B2DPoint& rHitPosition,
 120     double fLogicHitTolerance,
 121     bool bTextOnly,
 122     drawinglayer::primitive2d::Primitive2DContainer* pHitContainer)
 123 {
 124     basegfx::B2DRange aObjectRange(rVOC.getObjectRange());
 125
 126     if(!aObjectRange.isEmpty())
 127     {
 128         // first do a rough B2DRange based HitTest; do not forget to
 129         // include the HitTolerance if given
 130         if(basegfx::fTools::more(fLogicHitTolerance, 0.0))
 131         {
 132             aObjectRange.grow(fLogicHitTolerance);
 133         }
 134
 135         if(aObjectRange.isInside(rHitPosition))
 136         {
 137             // get primitive sequence
 138             sdr::contact::DisplayInfo aDisplayInfo;
 139             const drawinglayer::primitive2d::Primitive2DContainer& rSequence(rVOC.getPrimitive2DSequence(aDisplayInfo));
 140
 141             if(!rSequence.empty())
 142             {
 143                 // create a HitTest processor
 144                 const drawinglayer::geometry::ViewInformation2D& rViewInformation2D = rVOC.GetObjectContact().getViewInformation2D();
 145                 drawinglayer::processor2d::HitTestProcessor2D aHitTestProcessor2D(
 146                     rViewInformation2D,
 147                     rHitPosition,
 148                     fLogicHitTolerance,
 149                     bTextOnly);
 150
 151                 // ask for HitStack
 152                 aHitTestProcessor2D.collectHitStack(true);
 153
 154                 // feed it with the primitives
 155                 aHitTestProcessor2D.process(rSequence);
 156
 157                 // deliver result
 158                 if (aHitTestProcessor2D.getHit())
 159                 {
 160                     if (pHitContainer)
 161                     {
 162                         // fetch HitStack primitives if requested
 163                         *pHitContainer = aHitTestProcessor2D.getHitStack();
 164                     }
 165
 166                     return true;
 167                 }
 168             }
 169         }
 170     }
 171
 172     return false;
 173 }
 174
 175 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */