svx/inc/textchainflow.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 #pragma once
  21
  22 #include "textchain.hxx"
  23 #include <memory>
  24
  25 class SdrTextObj;
  26 class SdrOutliner;
  27 class NonOverflowingText;
  28 class OverflowingText;
  29 class TextChain;
  30 class OutlinerParaObject;
  31 class OFlowChainedText;
  32 class UFlowChainedText;
  33
  34 class TextChainFlow
  35 {
  36 public:
  37     TextChainFlow(SdrTextObj* pChainTarget);
  38     virtual ~TextChainFlow();
  39
  40     // Check for flow events in Outliner
  41     virtual void CheckForFlowEvents(SdrOutliner*);
  42
  43     void ExecuteUnderflow(SdrOutliner*);
  44
  45     // Uses two outliners: one for the non-overflow text and one for overflowing (might be the same)
  46     void ExecuteOverflow(SdrOutliner*, SdrOutliner*);
  47
  48     bool IsOverflow() const;
  49     bool IsUnderflow() const;
  50
  51     SdrTextObj* GetLinkTarget() const;
  52
  53 protected:
  54     void impCheckForFlowEvents(SdrOutliner*, SdrOutliner*);
  55
  56     TextChain* GetTextChain() const;
  57
  58     virtual void impLeaveOnlyNonOverflowingText(SdrOutliner*);
  59     void impMoveChainedTextToNextLink(SdrOutliner*);
  60
  61     virtual void impSetFlowOutlinerParams(SdrOutliner*, SdrOutliner*);
  62
  63 private:
  64     void impUpdateCursorInfo();
  65
  66 protected:
  67     std::unique_ptr<OFlowChainedText> mpOverflChText;
  68     std::unique_ptr<UFlowChainedText> mpUnderflChText;
  69     // Cursor related
  70     ESelection maOverflowPosSel;
  71     ESelection maPostChainingSel;
  72     bool mbPossiblyCursorOut;
  73
  74 private:
  75     SdrTextObj* mpTargetLink;
  76     SdrTextObj* mpNextLink;
  77     TextChain* mpTextChain;
  78     bool mbOFisUFinduced;
  79     bool bUnderflow;
  80     bool bOverflow;
  81 };
  82
  83 // NOTE: EditingTextChainFlow might be strongly coupled with behavior in SdrTextObj::onChainingEvent
  84 class EditingTextChainFlow final : public TextChainFlow
  85 {
  86 public:
  87     EditingTextChainFlow(SdrTextObj*);
  88     virtual void CheckForFlowEvents(SdrOutliner*) override;
  89
  90     //virtual void ExecuteOverflow(SdrOutliner *, SdrOutliner *) override;
  91
  92 private:
  93     virtual void impLeaveOnlyNonOverflowingText(SdrOutliner*) override;
  94
  95     virtual void impSetFlowOutlinerParams(SdrOutliner*, SdrOutliner*) override;
  96
  97     void impBroadcastCursorInfo() const;
  98 };
  99
 100 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */