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.
   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/contact/viewcontactofvirtobj.hxx>
  21 #include <svx/svdovirt.hxx>
  22 #include <svx/sdr/contact/displayinfo.hxx>
  23 #include <basegfx/matrix/b2dhommatrix.hxx>
  24 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  25 #include <vcl/outdev.hxx>
  26 #include <drawinglayer/primitive2d/sdrdecompositiontools2d.hxx>
  27
  28 //////////////////////////////////////////////////////////////////////////////
  29
  30 namespace sdr
  31 {
  32     namespace contact
  33     {
  34         SdrVirtObj& ViewContactOfVirtObj::GetVirtObj() const
  35         {
  36             return (SdrVirtObj&)mrObject;
  37         }
  38
  39         ViewContactOfVirtObj::ViewContactOfVirtObj(SdrVirtObj& rObj)
  40         :   ViewContactOfSdrObj(rObj)
  41         {
  42         }
  43
  44         ViewContactOfVirtObj::~ViewContactOfVirtObj()
  45         {
  46         }
  47
  48         // Access to possible sub-hierarchy
  49         sal_uInt32 ViewContactOfVirtObj::GetObjectCount() const
  50         {
  51             // Here, SdrVirtObj's need to return 0L to show that they have no
  52             // sub-hierarchy, even when they are group objects. This is necessary
  53             // to avoid that the same VOCs will be added to the draw hierarchy
  54             // twice which leads to problems.
  55             //
  56             // This solution is only a first solution to get things running. Later
  57             // this needs to be replaced with creating real VOCs for the objects
  58             // referenced by virtual objects to avoid the 'trick' of setting the
  59             // offset for painting at the destination OutputDevive.
  60             //
  61             // As can be seen, with primitives, the problem will be solved using
  62             // a transformPrimitive, so this solution can stay with primitives.
  63             return 0L;
  64         }
  65
  66         drawinglayer::primitive2d::Primitive2DSequence ViewContactOfVirtObj::createViewIndependentPrimitive2DSequence() const
  67         {
  68             // create displacement transformation if we have content
  69             basegfx::B2DHomMatrix aObjectMatrix;
  70             Point aAnchor(GetVirtObj().GetAnchorPos());
  71
  72             if(aAnchor.X() || aAnchor.Y())
  73             {
  74                 aObjectMatrix.set(0, 2, aAnchor.X());
  75                 aObjectMatrix.set(1, 2, aAnchor.Y());
  76             }
  77
  78             // use method from referenced object to get the Primitive2DSequence
  79             const drawinglayer::primitive2d::Primitive2DSequence xSequenceVirtual(
  80                 GetVirtObj().GetReferencedObj().GetViewContact().getViewIndependentPrimitive2DSequence());
  81
  82             if(xSequenceVirtual.hasElements())
  83             {
  84                 // create transform primitive
  85                 const drawinglayer::primitive2d::Primitive2DReference xReference(
  86                     new drawinglayer::primitive2d::TransformPrimitive2D(
  87                         aObjectMatrix,
  88                         xSequenceVirtual));
  89
  90                 return drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
  91             }
  92             else
  93             {
  94                 // always append an invisible outline for the cases where no visible content exists
  95                 const drawinglayer::primitive2d::Primitive2DReference xReference(
  96                     drawinglayer::primitive2d::createHiddenGeometryPrimitives2D(
  97                         false, aObjectMatrix));
  98
  99                 return drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
 100             }
 101         }
 102     } // end of namespace contact
 103 } // end of namespace sdr
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */