svx/source/sdr/contact/viewcontactofvirtobj.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 #include <svx/sdr/contact/viewcontactofvirtobj.hxx>
  21 #include <svx/svdovirt.hxx>
  22 #include <basegfx/matrix/b2dhommatrix.hxx>
  23 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  24 #include <drawinglayer/primitive2d/sdrdecompositiontools2d.hxx>
  25
  26 namespace sdr::contact {
  27
  28 ViewContactOfVirtObj::ViewContactOfVirtObj(SdrVirtObj& rObj)
  29 :   ViewContactOfSdrObj(rObj)
  30 {
  31 }
  32
  33 ViewContactOfVirtObj::~ViewContactOfVirtObj()
  34 {
  35 }
  36
  37 SdrVirtObj& ViewContactOfVirtObj::GetVirtObj() const
  38 {
  39     return static_cast<SdrVirtObj&>(mrObject);
  40 }
  41
  42 // Access to possible sub-hierarchy
  43 sal_uInt32 ViewContactOfVirtObj::GetObjectCount() const
  44 {
  45     // Here, SdrVirtObj's need to return 0L to show that they have no
  46     // sub-hierarchy, even when they are group objects. This is necessary
  47     // to avoid that the same VOCs will be added to the draw hierarchy
  48     // twice which leads to problems.
  49
  50     // This solution is only a first solution to get things running. Later
  51     // this needs to be replaced with creating real VOCs for the objects
  52     // referenced by virtual objects to avoid the 'trick' of setting the
  53     // offset for painting at the destination OutputDevice.
  54
  55     // As can be seen, with primitives, the problem will be solved using
  56     // a transformPrimitive, so this solution can stay with primitives.
  57     return 0;
  58 }
  59
  60 void ViewContactOfVirtObj::createViewIndependentPrimitive2DSequence(drawinglayer::primitive2d::Primitive2DDecompositionVisitor& rVisitor) const
  61 {
  62     // create displacement transformation if we have content
  63     basegfx::B2DHomMatrix aObjectMatrix;
  64     Point aAnchor(GetVirtObj().GetAnchorPos());
  65
  66     if(aAnchor.X() || aAnchor.Y())
  67     {
  68         aObjectMatrix.set(0, 2, aAnchor.X());
  69         aObjectMatrix.set(1, 2, aAnchor.Y());
  70     }
  71
  72     // use method from referenced object to get the Primitive2DContainer
  73     drawinglayer::primitive2d::Primitive2DContainer xSequenceVirtual;
  74     GetVirtObj().GetReferencedObj().GetViewContact().getViewIndependentPrimitive2DContainer(xSequenceVirtual);
  75
  76     if(!xSequenceVirtual.empty())
  77     {
  78         // create transform primitive
  79         drawinglayer::primitive2d::Primitive2DReference xReference(
  80             new drawinglayer::primitive2d::TransformPrimitive2D(
  81                 aObjectMatrix,
  82                 drawinglayer::primitive2d::Primitive2DContainer(std::move(xSequenceVirtual))));
  83
  84         rVisitor.visit(xReference);
  85     }
  86     else
  87     {
  88         // always append an invisible outline for the cases where no visible content exists
  89         const drawinglayer::primitive2d::Primitive2DReference xReference(
  90             drawinglayer::primitive2d::createHiddenGeometryPrimitives2D(
  91                 aObjectMatrix));
  92
  93         rVisitor.visit(xReference);
  94     }
  95 }
  96
  97 }
  98
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