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107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
/*
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* This file is part of the DOM implementation for KDE.
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*
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* Copyright (C) 2009 Vyacheslav Tokarev (tsjoker@gmail.com)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef Render_Position_H
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#define Render_Position_H
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#include "xml/dom_position.h"
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#include "rendering/render_object.h"
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using DOM::Position;
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namespace DOM
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{
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class NodeImpl;
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}
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using DOM::NodeImpl;
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namespace khtml
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{
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class InlineBox;
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class RenderPosition
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{
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public:
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// constructs empty position
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RenderPosition() {}
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RenderPosition(const Position& position) : m_position(position) {}
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RenderPosition(NodeImpl* node, int offset);
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static RenderPosition fromDOMPosition(const Position& position);
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Position position() const { return m_position; }
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const RenderObject* renderer() const { return m_position.isEmpty() ? 0 : m_position.node()->renderer(); }
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NodeImpl* node() const { return m_position.node(); }
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int domOffset() const { return m_position.offset(); }
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inline bool isEmpty() const { return m_position.isEmpty(); }
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inline bool notEmpty() const { return m_position.notEmpty(); }
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// QRect caretRegion() const;
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// int renderedOffset() const; // convert to rendered offset, though we need to eliminate other code using it
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int renderedOffset() {
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int result;
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getInlineBoxAndOffset(result);
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return result;
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}
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bool inRenderedContent() { return renderer(); }
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static bool inRenderedContent(const Position& position) { return fromDOMPosition(position).inRenderedContent(); }
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// implementation: same RootInlineBox
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static bool rendersOnSameLine(const RenderPosition& self, const RenderPosition& other);
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// implementation: either renderers are different, or inline boxes or offsets inside
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static bool rendersInDifferentPosition(const RenderPosition& self, const RenderPosition& other);
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// static bool rendersOnDifferentLine(); // compare inline boxes and its roots
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// bool isFirstOnRenderedLine() const; // either iterate backwards over DOM tree or check if we're at the beginning of the RootInlineBox?
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// bool isLastOnRenderedLine() const; // -||-
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RenderPosition previousLinePosition(int);
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RenderPosition nextLinePosition(int);
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protected:
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// returns rendered offset
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InlineBox* getInlineBoxAndOffset(int& offset) const;
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private:
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Position m_position;
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// affinity thing, so we'll have where to put caret at the end of inline box or at the start of next one
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};
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inline bool operator==(const RenderPosition& a, const RenderPosition& b)
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{
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return a.position() == b.position();
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}
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inline bool operator!=(const RenderPosition& a, const RenderPosition& b)
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{
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return !(a == b);
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}
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QDebug operator<<(QDebug stream, const RenderPosition& renderPosition);
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} // namespace
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#endif
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