sw/source/core/inc/flyfrm.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_SW_SOURCE_CORE_INC_FLYFRM_HXX
  21 #define INCLUDED_SW_SOURCE_CORE_INC_FLYFRM_HXX
  22
  23 #include "layfrm.hxx"
  24 #include <vector>
  25 #include <frmfmt.hxx>
  26 #include <anchoredobject.hxx>
  27 #include <swdllapi.h>
  28
  29 class SwFormatAnchor;
  30 class SwPageFrame;
  31 class SwFormatFrameSize;
  32 struct SwCursorMoveState;
  33 class SwBorderAttrs;
  34 class SwVirtFlyDrawObj;
  35 class SwAttrSetChg;
  36 namespace tools { class PolyPolygon; }
  37 class SwFormat;
  38 class SwViewShell;
  39 class SwFEShell;
  40 class SwWrtShell;
  41 class SwFlyAtContentFrame;
  42
  43
  44 /** search an anchor for paragraph bound frames starting from pOldAnch
  45
  46     needed for dragging of objects bound to a paragraph for showing an anchor
  47     indicator as well as for changing the anchor.
  48
  49     implemented in layout/flycnt.cxx
  50  */
  51 const SwContentFrame *FindAnchor( const SwFrame *pOldAnch, const Point &rNew,
  52                               const bool bBody = false );
  53
  54 /** calculate rectangle in that the object can be moved or rather be resized */
  55 bool CalcClipRect( const SdrObject *pSdrObj, SwRect &rRect, bool bMove = true );
  56
  57 enum class SwFlyFrameInvFlags : sal_uInt8
  58 {
  59     NONE = 0x00,
  60     InvalidatePos = 0x01,
  61     InvalidateSize = 0x02,
  62     InvalidatePrt = 0x04,
  63     SetNotifyBack = 0x08,
  64     SetCompletePaint = 0x10,
  65     InvalidateBrowseWidth = 0x20,
  66     ClearContourCache = 0x40,
  67     UpdateObjInSortedList = 0x80,
  68 };
  69
  70 namespace o3tl {
  71     template<> struct typed_flags<SwFlyFrameInvFlags> : is_typed_flags<SwFlyFrameInvFlags, 0x00ff> {};
  72 }
  73
  74
  75 /** general base class for all free-flowing frames
  76
  77     #i26791# - inherit also from <SwAnchoredFlyFrame>
  78 */
  79 class SAL_DLLPUBLIC_RTTI SwFlyFrame : public SwLayoutFrame, public SwAnchoredObject
  80 {
  81     // is allowed to lock, implemented in frmtool.cxx
  82     friend void AppendObj(SwFrame *const pFrame, SwPageFrame *const pPage, SwFrameFormat *const pFormat, const SwFormatAnchor & rAnch);
  83     friend void Notify( SwFlyFrame *, SwPageFrame *pOld, const SwRect &rOld,
  84                         const SwRect* pOldPrt );
  85
  86     void InitDrawObj(SwFrame const&); // these to methods are called in the
  87     void FinitDrawObj();    // constructors
  88
  89     void UpdateAttr_( const SfxPoolItem*, const SfxPoolItem*, SwFlyFrameInvFlags &,
  90                       SwAttrSetChg *pa = nullptr, SwAttrSetChg *pb = nullptr );
  91
  92     using SwLayoutFrame::CalcRel;
  93
  94 protected:
  95     // Predecessor/Successor for chaining with text flow
  96     SwFlyFrame *m_pPrevLink, *m_pNextLink;
  97    static const SwFormatAnchor* GetAnchorFromPoolItem(const SfxPoolItem& rItem);
  98
  99 private:
 100     // It must be possible to block Content-bound flys so that they will be not
 101     // formatted; in this case MakeAll() returns immediately. This is necessary
 102     // for page changes during formatting. In addition, it is needed during
 103     // the constructor call of the root object since otherwise the anchor will
 104     // be formatted before the root is anchored correctly to a shell and
 105     // because too much would be formatted as a result.
 106     bool m_bLocked :1;
 107     // true if the background of NotifyDTor needs to be notified at the end
 108     // of a MakeAll() call.
 109     bool m_bNotifyBack :1;
 110
 111 protected:
 112     // Pos, PrtArea or SSize have been invalidated - they will be evaluated
 113     // again immediately because they have to be valid _at all time_.
 114     // The invalidation is tracked here so that LayAction knows about it and
 115     // can handle it properly. Exceptions prove the rule.
 116     bool m_bInvalid :1;
 117
 118     // true if the proposed height of an attribute is a minimal height
 119     // (this means that the frame can grow higher if needed)
 120     bool m_bMinHeight :1;
 121     // true if the fly frame could not format position/size based on its
 122     // attributes, e.g. because there was not enough space.
 123     bool m_bHeightClipped :1;
 124     bool m_bWidthClipped :1;
 125     // If true then call only the format after adjusting the width (CheckClip);
 126     // but the width will not be re-evaluated based on the attributes.
 127     bool m_bFormatHeightOnly :1;
 128
 129     bool m_bInCnt :1;        ///< RndStdIds::FLY_AS_CHAR, anchored as character
 130     bool m_bAtCnt :1;        ///< RndStdIds::FLY_AT_PARA, anchored at paragraph
 131                              ///< or RndStdIds::FLY_AT_CHAR
 132     bool m_bLayout :1;       ///< RndStdIds::FLY_AT_PAGE, RndStdIds::FLY_AT_FLY, at page or at frame
 133     bool m_bAutoPosition :1; ///< RndStdIds::FLY_AT_CHAR, anchored at character
 134     bool m_bDeleted :1;      ///< Anchored to a tracked deletion
 135     size_t m_nAuthor;        ///< Redline author index for colored crossing out
 136
 137     friend class SwNoTextFrame; // is allowed to call NotifyBackground
 138
 139     Point m_aContentPos;        // content area's position relatively to Frame
 140     bool m_bValidContentPos;
 141
 142     virtual void Format( vcl::RenderContext* pRenderContext, const SwBorderAttrs *pAttrs = nullptr ) override;
 143     void MakePrtArea( const SwBorderAttrs &rAttrs );
 144     void MakeContentPos( const SwBorderAttrs &rAttrs );
 145
 146     void Lock()         { m_bLocked = true; }
 147     void Unlock()       { m_bLocked = false; }
 148
 149     Size CalcRel( const SwFormatFrameSize &rSz ) const;
 150
 151     SwFlyFrame( SwFlyFrameFormat*, SwFrame*, SwFrame *pAnchor, bool bFollow = false );
 152
 153     virtual void DestroyImpl() override;
 154     virtual ~SwFlyFrame() override;
 155
 156     /** method to assure that anchored object is registered at the correct
 157         page frame
 158     */
 159     virtual void RegisterAtCorrectPage() override;
 160
 161     virtual bool SetObjTop_( const SwTwips _nTop ) override;
 162     virtual bool SetObjLeft_( const SwTwips _nLeft ) override;
 163
 164     virtual SwRect GetObjBoundRect() const override;
 165     virtual void SwClientNotify(const SwModify& rMod, const SfxHint& rHint) override;
 166
 167     virtual const IDocumentDrawModelAccess& getIDocumentDrawModelAccess( ) override;
 168
 169     SwTwips CalcContentHeight(const SwBorderAttrs *pAttrs, const SwTwips nMinHeight, const SwTwips nUL);
 170
 171 public:
 172     // #i26791#
 173     virtual void PaintSwFrame( vcl::RenderContext& rRenderContext, SwRect const& ) const override;
 174     virtual Size ChgSize( const Size& aNewSize ) override;
 175     virtual bool GetModelPositionForViewPoint( SwPosition *, Point&,
 176                               SwCursorMoveState* = nullptr, bool bTestBackground = false ) const override;
 177
 178     virtual void CheckDirection( bool bVert ) override;
 179     virtual void Cut() override;
 180 #ifdef DBG_UTIL
 181     virtual void Paste( SwFrame* pParent, SwFrame* pSibling = nullptr ) override;
 182 #endif
 183
 184     SwTwips Shrink_( SwTwips, bool bTst );
 185     SwTwips Grow_  ( SwTwips, bool bTst );
 186     void    Invalidate_( SwPageFrame const *pPage = nullptr );
 187
 188     bool FrameSizeChg( const SwFormatFrameSize & );
 189
 190     SwFlyFrame *GetPrevLink() const { return m_pPrevLink; }
 191     SwFlyFrame *GetNextLink() const { return m_pNextLink; }
 192
 193     static void ChainFrames( SwFlyFrame *pMaster, SwFlyFrame *pFollow );
 194     static void UnchainFrames( SwFlyFrame *pMaster, SwFlyFrame *pFollow );
 195
 196     SwFlyFrame *FindChainNeighbour( SwFrameFormat const &rFormat, SwFrame *pAnch = nullptr );
 197
 198     /// Is this fly allowed to split across pages? (Disabled by default.)
 199     bool IsFlySplitAllowed() const;
 200
 201     // #i26791#
 202     const SwVirtFlyDrawObj* GetVirtDrawObj() const;
 203     SwVirtFlyDrawObj *GetVirtDrawObj();
 204     void NotifyDrawObj();
 205
 206     void ChgRelPos( const Point &rAbsPos );
 207     bool IsInvalid() const { return m_bInvalid; }
 208     void Invalidate() const { const_cast<SwFlyFrame*>(this)->m_bInvalid = true; }
 209     void Validate() const { const_cast<SwFlyFrame*>(this)->m_bInvalid = false; }
 210
 211     bool IsMinHeight()  const { return m_bMinHeight; }
 212     bool IsLocked()     const { return m_bLocked; }
 213     bool IsAutoPos()    const { return m_bAutoPosition; }
 214     bool IsFlyInContentFrame() const { return m_bInCnt; }
 215     bool IsFlyFreeFrame() const { return m_bAtCnt || m_bLayout; }
 216     bool IsFlyLayFrame() const { return m_bLayout; }
 217     bool IsFlyAtContentFrame() const { return m_bAtCnt; }
 218     bool IsDeleted() const { return m_bDeleted; }
 219     void SetDeleted(bool bDeleted) { m_bDeleted = bDeleted; }
 220     void SetAuthor( size_t nAuthor ) { m_nAuthor = nAuthor; }
 221     size_t GetAuthor() const { return m_nAuthor; }
 222
 223     bool IsNotifyBack() const { return m_bNotifyBack; }
 224     void SetNotifyBack()      { m_bNotifyBack = true; }
 225     void ResetNotifyBack()    { m_bNotifyBack = false; }
 226
 227     bool IsClipped()        const   { return m_bHeightClipped || m_bWidthClipped; }
 228     bool IsHeightClipped()  const   { return m_bHeightClipped; }
 229
 230     bool IsLowerOf( const SwLayoutFrame* pUpper ) const;
 231     bool IsUpperOf( const SwFlyFrame& _rLower ) const
 232     {
 233         return _rLower.IsLowerOf( this );
 234     }
 235
 236     SwFrame *FindLastLower();
 237
 238     // #i13147# - add parameter <_bForPaint> to avoid load of
 239     // the graphic during paint. Default value: false
 240     bool GetContour( tools::PolyPolygon&   rContour,
 241                      const bool _bForPaint = false ) const;
 242
 243     // Paint on this shell (consider Preview, print flag, etc. recursively)?
 244     static bool IsPaint( SdrObject *pObj, const SwViewShell *pSh );
 245
 246     /** SwFlyFrame::IsBackgroundTransparent
 247
 248         determines if background of fly frame has to be drawn transparently
 249
 250         definition found in /core/layout/paintfrm.cxx
 251
 252         @return true, if background color is transparent or an existing background
 253         graphic is transparent.
 254     */
 255     bool IsBackgroundTransparent() const;
 256
 257     void Chain( SwFrame* _pAnchor );
 258     void Unchain();
 259     void InsertCnt();
 260     void DeleteCnt();
 261     void InsertColumns();
 262
 263     // #i26791# - pure virtual methods of base class <SwAnchoredObject>
 264     virtual void MakeObjPos() override;
 265     virtual void InvalidateObjPos() override;
 266     virtual void RegisterAtPage(SwPageFrame&) override;
 267
 268     virtual SwFrameFormat* GetFrameFormat() override;
 269     virtual const SwFrameFormat* GetFrameFormat() const override;
 270
 271     virtual SwRect GetObjRect() const override;
 272
 273     /** method to determine if a format on the Writer fly frame is possible
 274
 275         #i28701#
 276         refine 'IsFormatPossible'-conditions of method
 277         <SwAnchoredObject::IsFormatPossible()> by:
 278         format isn't possible, if Writer fly frame is locked resp. col-locked.
 279     */
 280     virtual bool IsFormatPossible() const override;
 281     static void GetAnchoredObjects( std::vector<SwAnchoredObject*>&, const SwFormat& rFormat );
 282
 283     // overwriting "SwFrameFormat *SwLayoutFrame::GetFormat" to provide the correct derived return type.
 284     // (This is in order to skip on the otherwise necessary casting of the result to
 285     // 'SwFlyFrameFormat *' after calls to this function. The casting is now done in this function.)
 286     virtual const SwFlyFrameFormat *GetFormat() const override;
 287     SW_DLLPUBLIC virtual SwFlyFrameFormat *GetFormat() override;
 288
 289     virtual void dumpAsXml(xmlTextWriterPtr writer = nullptr) const override;
 290
 291     virtual void Calc(vcl::RenderContext* pRenderContext) const override;
 292
 293     const Point& ContentPos() const { return m_aContentPos; }
 294     Point& ContentPos() { return m_aContentPos; }
 295
 296     void InvalidateContentPos();
 297
 298     void SelectionHasChanged(SwFEShell* pShell);
 299     SW_DLLPUBLIC bool IsShowUnfloatButton(SwWrtShell* pWrtSh) const;
 300
 301     // For testing only (see uiwriter)
 302     SW_DLLPUBLIC void ActiveUnfloatButton(SwWrtShell* pWrtSh);
 303
 304     virtual const SwFlyFrame* DynCastFlyFrame() const override;
 305     virtual SwFlyFrame* DynCastFlyFrame() override;
 306
 307     SW_DLLPUBLIC SwFlyAtContentFrame* DynCastFlyAtContentFrame();
 308
 309 private:
 310     void UpdateUnfloatButton(SwWrtShell* pWrtSh, bool bShow) const;
 311     void PaintDecorators() const;
 312 };
 313 #endif
 314
 315 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */