svx/source/sdr/overlay/overlayobjectlist.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 <svx/sdr/overlay/overlayobjectlist.hxx>
  21 #include <svx/sdr/overlay/overlaymanager.hxx>
  22 #include <vcl/outdev.hxx>
  23 #include <tools/gen.hxx>
  24
  25 #include <drawinglayer/processor2d/hittestprocessor2d.hxx>
  26 #include <comphelper/lok.hxx>
  27
  28 #define DEFAULT_VALUE_FOR_HITTEST_PIXEL         (2)
  29 #define DEFAULT_VALUE_FOR_HITTEST_TWIP          (30)
  30
  31 namespace sdr::overlay
  32 {
  33         OverlayObjectList::~OverlayObjectList()
  34         {
  35             clear();
  36         }
  37
  38         void OverlayObjectList::clear()
  39         {
  40             for(auto & pCandidate : maVector)
  41             {
  42                 if(pCandidate->getOverlayManager())
  43                     pCandidate->getOverlayManager()->remove(*pCandidate);
  44             }
  45             maVector.clear();
  46         }
  47
  48         void OverlayObjectList::append(std::unique_ptr<OverlayObject> pOverlayObject)
  49         {
  50             assert(pOverlayObject && "tried to add invalid OverlayObject to OverlayObjectList");
  51             maVector.push_back(std::move(pOverlayObject));
  52         }
  53
  54         bool OverlayObjectList::isHitLogic(const basegfx::B2DPoint& rLogicPosition, double fLogicTolerance) const
  55         {
  56             if(!maVector.empty())
  57             {
  58                 OverlayObject* pFirst = maVector.front().get();
  59                 OverlayManager* pManager = pFirst->getOverlayManager();
  60
  61                 if(pManager)
  62                 {
  63                     if(0.0 == fLogicTolerance)
  64                     {
  65                         Size aSizeLogic(pManager->getOutputDevice().PixelToLogic(
  66                             Size(DEFAULT_VALUE_FOR_HITTEST_PIXEL, DEFAULT_VALUE_FOR_HITTEST_PIXEL)));
  67
  68                         // When tiled rendering, we always work in logic units, use the non-pixel default.
  69                         if (comphelper::LibreOfficeKit::isActive())
  70                         {
  71                             aSizeLogic = Size(DEFAULT_VALUE_FOR_HITTEST_TWIP, DEFAULT_VALUE_FOR_HITTEST_TWIP);
  72                             if (pManager->getOutputDevice().GetMapMode().GetMapUnit() == MapUnit::Map100thMM)
  73                                 aSizeLogic = o3tl::convert(aSizeLogic, o3tl::Length::twip, o3tl::Length::mm100);
  74                         }
  75
  76                         fLogicTolerance = aSizeLogic.Width();
  77                     }
  78
  79                     const drawinglayer::geometry::ViewInformation2D& aViewInformation2D(pManager->getCurrentViewInformation2D());
  80                     drawinglayer::processor2d::HitTestProcessor2D aHitTestProcessor2D(
  81                         aViewInformation2D,
  82                         rLogicPosition,
  83                         {fLogicTolerance, fLogicTolerance},
  84                         false);
  85
  86                     for(auto & pCandidate : maVector)
  87                     {
  88                         if(pCandidate->isHittable())
  89                         {
  90                             const drawinglayer::primitive2d::Primitive2DContainer aSequence = pCandidate->getOverlayObjectPrimitive2DSequence();
  91
  92                             if(!aSequence.empty())
  93                             {
  94                                 aHitTestProcessor2D.process(aSequence);
  95
  96                                 if(aHitTestProcessor2D.getHit())
  97                                 {
  98                                     return true;
  99                                 }
 100                             }
 101                         }
 102                     }
 103                 }
 104             }
 105
 106             return false;
 107         }
 108
 109         bool OverlayObjectList::isHitPixel(const Point& rDiscretePosition) const
 110         {
 111             constexpr sal_uInt32 nDiscreteTolerance = DEFAULT_VALUE_FOR_HITTEST_PIXEL;
 112             if(!maVector.empty())
 113             {
 114                 OverlayObject* pCandidate = maVector.front().get();
 115                 OverlayManager* pManager = pCandidate->getOverlayManager();
 116
 117                 if(pManager)
 118                 {
 119                     const Point aPosLogic(pManager->getOutputDevice().PixelToLogic(rDiscretePosition));
 120                     const basegfx::B2DPoint aPosition(aPosLogic.X(), aPosLogic.Y());
 121
 122                     const Size aSizeLogic(pManager->getOutputDevice().PixelToLogic(Size(nDiscreteTolerance, nDiscreteTolerance)));
 123                     return isHitLogic(aPosition, static_cast<double>(aSizeLogic.Width()));
 124                 }
 125             }
 126
 127             return false;
 128         }
 129
 130         basegfx::B2DRange OverlayObjectList::getBaseRange() const
 131         {
 132             basegfx::B2DRange aRetval;
 133
 134             for(auto & pCandidate : maVector)
 135             {
 136                 aRetval.expand(pCandidate->getBaseRange());
 137             }
 138
 139             return aRetval;
 140         }
 141
 142 } // end of namespace
 143
 144 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */