oox/source/drawingml/diagram/layoutatomvisitorbase.hxx

   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 #ifndef INCLUDED_OOX_SOURCE_DRAWINGML_DIAGRAM_LAYOUTATOMVISITORBASE_HXX
  21 #define INCLUDED_OOX_SOURCE_DRAWINGML_DIAGRAM_LAYOUTATOMVISITORBASE_HXX
  22
  23 #include <memory>
  24
  25 #include <oox/drawingml/shape.hxx>
  26 #include "diagram.hxx"
  27 #include "diagramlayoutatoms.hxx"
  28
  29 namespace oox { namespace drawingml {
  30
  31 struct LayoutAtomVisitor
  32 {
  33     virtual ~LayoutAtomVisitor() {}
  34     virtual void visit(ConstraintAtom& rAtom) = 0;
  35     virtual void visit(AlgAtom& rAtom) = 0;
  36     virtual void visit(ForEachAtom& rAtom) = 0;
  37     virtual void visit(ConditionAtom& rAtom) = 0;
  38     virtual void visit(ChooseAtom& rAtom) = 0;
  39     virtual void visit(LayoutNode& rAtom) = 0;
  40     virtual void visit(ShapeAtom& rAtom) = 0;
  41 };
  42
  43 // basic visitor implementation that follows if/else and for-each nodes
  44 // and keeps track of current position in data tree
  45 class LayoutAtomVisitorBase : public LayoutAtomVisitor
  46 {
  47 public:
  48     LayoutAtomVisitorBase(const Diagram& rDgm, const dgm::Point* pRootPoint) :
  49         mrDgm(rDgm),
  50         mpCurrentNode(pRootPoint),
  51         mnCurrIdx(0),
  52         mnCurrStep(0),
  53         mnCurrCnt(0),
  54         meLookFor(LAYOUT_NODE)
  55     {}
  56
  57     void defaultVisit(LayoutAtom const& rAtom);
  58
  59     using LayoutAtomVisitor::visit;
  60     virtual void visit(ForEachAtom& rAtom) override;
  61     virtual void visit(ConditionAtom& rAtom) override;
  62     virtual void visit(ChooseAtom& rAtom) override;
  63     virtual void visit(LayoutNode& rAtom) override;
  64
  65 protected:
  66     const Diagram& mrDgm;
  67     const dgm::Point* mpCurrentNode;
  68     sal_Int32 mnCurrIdx;
  69     sal_Int32 mnCurrStep;
  70     sal_Int32 mnCurrCnt;
  71     enum {LAYOUT_NODE, CONSTRAINT, ALGORITHM} meLookFor;
  72 };
  73
  74 class ShallowPresNameVisitor : public LayoutAtomVisitorBase
  75 {
  76 public:
  77     explicit ShallowPresNameVisitor(const Diagram& rDgm, const dgm::Point* pRootPoint) :
  78         LayoutAtomVisitorBase(rDgm, pRootPoint),
  79         mnCnt(0)
  80     {}
  81
  82     using LayoutAtomVisitorBase::visit;
  83     virtual void visit(ConstraintAtom& rAtom) override;
  84     virtual void visit(AlgAtom& rAtom) override;
  85     virtual void visit(ForEachAtom& rAtom) override;
  86     virtual void visit(LayoutNode& rAtom) override;
  87     virtual void visit(ShapeAtom& rAtom) override;
  88
  89     size_t getCount() const { return mnCnt; }
  90
  91 private:
  92     size_t mnCnt;
  93 };
  94
  95 } }
  96
  97 #endif
  98
  99 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */