diff options
Diffstat (limited to 'tdehtml/rendering/render_flow.h')
-rw-r--r-- | tdehtml/rendering/render_flow.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/tdehtml/rendering/render_flow.h b/tdehtml/rendering/render_flow.h new file mode 100644 index 000000000..684968bc1 --- /dev/null +++ b/tdehtml/rendering/render_flow.h @@ -0,0 +1,96 @@ +/* + * This file is part of the DOM implementation for KDE. + * + * Copyright (C) 1999-2003 Lars Knoll ([email protected]) + * (C) 1999-2003 Antti Koivisto ([email protected]) + * (C) 2002-2003 Dirk Mueller ([email protected]) + * (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 tdehtml { + +/** + * 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 = 0; m_firstLineBox = 0; m_lastLineBox = 0; } + + virtual RenderFlow* continuation() const { return m_continuation; } + void setContinuation(RenderFlow* c) { m_continuation = c; } + RenderFlow* continuationBefore(RenderObject* beforeChild); + + void addChildWithContinuation(RenderObject* newChild, RenderObject* beforeChild); + virtual void addChildToFlow(RenderObject* newChild, RenderObject* beforeChild) = 0; + virtual void addChild(RenderObject *newChild, RenderObject *beforeChild = 0); + + static RenderFlow* createFlow(DOM::NodeImpl* node, RenderStyle* style, RenderArena* arena); + + virtual void deleteLastLineBox(RenderArena* arena=0); + virtual void deleteInlineBoxes(RenderArena* arena=0); + + + InlineFlowBox* firstLineBox() const { return m_firstLineBox; } + InlineFlowBox* lastLineBox() const { return m_lastLineBox; } + + virtual InlineBox* createInlineBox(bool makePlaceHolderBox, bool isRootLineBox); + + void paintLines(PaintInfo& i, int _tx, int _ty); + bool hitTestLines(NodeInfo& i, int x, int y, int tx, int ty, HitTestAction hitTestAction); + + virtual void repaint(Priority p=NormalPriority); + + virtual int highestPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; + virtual int lowestPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; + virtual int rightmostPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; + virtual int leftmostPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; + +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 |