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     const basegfx::B2DVector& rHitTolerance,
  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, rHitTolerance, 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 basegfx::B2DPoint aHitPosition(rPnt.X(), rPnt.Y());
  77                     const sdr::contact::ViewObjectContact& rVOC = rObject.GetViewContact().GetViewObjectContact(
  78                         rSdrPageView.GetPageWindow(0)->GetObjectContact());
  79
  80                     if(ViewObjectContactPrimitiveHit(rVOC, aHitPosition, rHitTolerance, bTextOnly, pHitContainer))
  81                     {
  82                           pResult = const_cast< SdrObject* >(&rObject);
  83                     }
  84                 }
  85             }
  86         }
  87     }
  88
  89     return pResult;
  90 }
  91
  92
  93 SdrObject* SdrObjListPrimitiveHit(
  94     const SdrObjList& rList,
  95     const Point& rPnt,
  96     const basegfx::B2DVector& rHitTolerance,
  97     const SdrPageView& rSdrPageView,
  98     const SdrLayerIDSet* pVisiLayer,
  99     bool bTextOnly)
 100 {
 101     size_t nObjNum(rList.GetObjCount());
 102     SdrObject* pRetval = nullptr;
 103
 104     while(!pRetval && nObjNum > 0)
 105     {
 106         nObjNum--;
 107         SdrObject* pObj = rList.GetObj(nObjNum);
 108
 109         pRetval = SdrObjectPrimitiveHit(*pObj, rPnt, rHitTolerance, rSdrPageView, pVisiLayer, bTextOnly);
 110     }
 111
 112     return pRetval;
 113 }
 114
 115
 116 bool ViewObjectContactPrimitiveHit(
 117     const sdr::contact::ViewObjectContact& rVOC,
 118     const basegfx::B2DPoint& rHitPosition,
 119     const basegfx::B2DVector& rLogicHitTolerance,
 120     bool bTextOnly,
 121     drawinglayer::primitive2d::Primitive2DContainer* pHitContainer)
 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(rLogicHitTolerance.getX() > 0 || rLogicHitTolerance.getY() > 0)
 130         {
 131             aObjectRange.grow(rLogicHitTolerance);
 132         }
 133
 134         if(aObjectRange.isInside(rHitPosition))
 135         {
 136             // get primitive sequence
 137             sdr::contact::DisplayInfo aDisplayInfo;
 138             // have to make a copy of this container here, because it might be changed underneath us
 139             const drawinglayer::primitive2d::Primitive2DContainer aSequence(rVOC.getPrimitive2DSequence(aDisplayInfo));
 140
 141             if(!aSequence.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                     rLogicHitTolerance,
 149                     bTextOnly);
 150
 151                 // ask for HitStack
 152                 aHitTestProcessor2D.collectHitStack(pHitContainer != nullptr);
 153
 154                 // feed it with the primitives
 155                 aHitTestProcessor2D.process(aSequence);
 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: */