File indexing completed on 2024-04-28 11:38:42

 /*
  * This file is part of the DOM implementation for KDE.
  *
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *           (C) 1999-2003 Antti Koivisto (koivisto@kde.org)
  *           (C) 2002-2003 Dirk Mueller (mueller@kde.org)
  *           (C) 2003 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 #ifndef RENDER_FLOW_H
 #define RENDER_FLOW_H
 
 #include "render_box.h"
 #include "bidi.h"
 #include "render_line.h"
 
 namespace khtml
 {
 
 /**
  * all geometry managing stuff is only in the block elements.
  *
  * Inline elements don't layout themselves, but the whole paragraph
  * gets flowed by the surrounding block element. This is, because
  * one needs to know the whole paragraph to calculate bidirectional
  * behaviour of text, so putting the layouting routines in the inline
  * elements is impossible.
  */
 class RenderFlow : public RenderBox
 {
 public:
     RenderFlow(DOM::NodeImpl *node)
         : RenderBox(node)
     {
         m_continuation = nullptr;
         m_firstLineBox = nullptr;
         m_lastLineBox = nullptr;
     }
 
     RenderFlow *continuation() const override
     {
         return m_continuation;
     }
     void setContinuation(RenderFlow *c)
     {
         m_continuation = c;
     }
     RenderFlow *continuationBefore(const RenderObject *beforeChild);
 
     void addChildWithContinuation(RenderObject *newChild, RenderObject *beforeChild);
     virtual void addChildToFlow(RenderObject *newChild, RenderObject *beforeChild) = 0;
     void addChild(RenderObject *newChild, RenderObject *beforeChild = nullptr) override;
 
     static RenderFlow *createFlow(DOM::NodeImpl *node, RenderStyle *style, RenderArena *arena);
 
     void detach() override;
 
     void attachLineBox(InlineFlowBox *box);
     void extractLineBox(InlineFlowBox *box);
 
     virtual void deleteLastLineBox(RenderArena *arena = nullptr);
     void deleteInlineBoxes(RenderArena *arena = nullptr) override;
     void removeInlineBox(InlineBox *box) override;
     void dirtyInlineBoxes(bool fullLayout, bool isRootLineBox = false) override;
 
     void dirtyLinesFromChangedChild(RenderObject *child) override;
 
     InlineFlowBox *firstLineBox() const
     {
         return m_firstLineBox;
     }
     InlineFlowBox *lastLineBox() const
     {
         return m_lastLineBox;
     }
 
     QList< QRectF > getClientRects() override;
 
     InlineBox *createInlineBox(bool makePlaceHolderBox, bool isRootLineBox) override;
 
     void paintLines(PaintInfo &i, int _tx, int _ty);
     bool hitTestLines(NodeInfo &i, int x, int y, int tx, int ty, HitTestAction hitTestAction);
 
     void repaint(Priority p = NormalPriority) override;
 
     int highestPosition(bool includeOverflowInterior = true, bool includeSelf = true) const override;
     int lowestPosition(bool includeOverflowInterior = true, bool includeSelf = true) const override;
     int rightmostPosition(bool includeOverflowInterior = true, bool includeSelf = true) const override;
     int leftmostPosition(bool includeOverflowInterior = true, bool includeSelf = true) const override;
 
 protected:
     // An inline can be split with blocks occurring in between the inline content.
     // When this occurs we need a pointer to our next object.  We can basically be
     // split into a sequence of inlines and blocks.  The continuation will either be
     // an anonymous block (that houses other blocks) or it will be an inline flow.
     RenderFlow *m_continuation;
 
     // For block flows, each box represents the root inline box for a line in the
     // paragraph.
     // For inline flows, each box represents a portion of that inline.
     InlineFlowBox *m_firstLineBox;
     InlineFlowBox *m_lastLineBox;
 };
 
 } //namespace
 
 #endif