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/* This file is part of the KDE project
* Copyright (C) 2006-2007 Thomas Zander <zander@kde.org>
*
* 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 LAYOUT_H
#define LAYOUT_H
#include "TableLayout.h"
#include <KoTextDocumentLayout.h>
#include <KoTextBlockData.h>
#include <KoInsets.h>
#include <QTextLine>
#include <QTextBlock>
#include <QTextTableCell>
#include <QHash>
class KoStyleManager;
class KoTextBlockData;
class KoTextShapeData;
class TextShape;
class KoChangeTracker;
class KoImageCollection;
/**
* The document layouter for KoText style docs.
*/
class Layout : public KoTextDocumentLayout::LayoutState
{
public:
explicit Layout(KoTextDocumentLayout *parent);
/// start layouting, return false when there is nothing to do
virtual bool start();
/// end layouting
virtual void end();
virtual void reset();
/// returns true if reset has been called.
virtual bool isInterrupted() const;
virtual qreal width();
virtual qreal x();
virtual qreal y();
virtual int cursorPosition() const;
/// return the y offset of the document at start of shape.
virtual qreal docOffsetInShape() const;
/// when a line is added, update internal vars. Return true if line does not fit in shape
virtual bool addLine(QTextLine &line);
/// prepare for next paragraph; return false if there is no next parag.
virtual bool nextParag();
virtual bool previousParag();
virtual qreal documentOffsetInShape();
// get the text indent accounting for auto-text-indent
qreal resolveTextIndent();
virtual bool setFollowupShape(KoShape *shape);
/// called by the KoTextDocumentLayout to notify the LayoutState of a successfully resized inline object
virtual void registerInlineObject(const QTextInlineObject &inlineObject);
virtual QTextTableCell hitTestTable(QTextTable *table, const QPointF &point);
/// paint the document
virtual void draw(QPainter *painter, const KoTextDocumentLayout::PaintContext & context);
/// reimplemented from superclass
virtual void clearTillEnd();
/// reimplemented from superclass
int numColumns() {
return m_dropCapsNChars;
}
/// set default tab size for this document
virtual void setTabSpacing(qreal spacing) {
m_defaultTabSizing = spacing;
}
private:
friend class TestTableLayout; // to allow direct testing.
void updateBorders();
qreal topMargin();
qreal listIndent();
void cleanupShapes();
void cleanupShape(KoShape *daShape);
void nextShape();
void drawFrame(QTextFrame *frame, QPainter *painter, const KoTextDocumentLayout::PaintContext & context, int inTable);
void drawListItem(QPainter *painter, const QTextBlock &block, KoImageCollection *imageCollection);
void drawTrackedChangeItem(QPainter *painter, QTextBlock &block, int selectionStart, int selectionEnd, const KoViewConverter *converter);
void decorateParagraph(QPainter *painter, const QTextBlock &block, int selectionStart, int selectionEnd, const KoViewConverter *converter);
void decorateTabs(QPainter *painter, const QVariantList& tabList, const QTextLine &line, const QTextFragment& currentFragment, int startOfBlock);
qreal inlineCharHeight(const QTextFragment &fragment);
/**
* Find a footnote and if there exists one reserve space for it at the bottom of the shape.
* @param line the line that we are currently doing layout for. Any finding of footnotes
* will be limited to content in this line.
* @param oldLength this pointer will be filled with the text position in the footnote document
* before any footnotes have been inserted. This is useful to undo the insertion of the
* footnote.
* @return the height in document points of space used for all footnotes in this frame.
*/
qreal findFootnote(const QTextLine &line, int *oldLength);
void resetPrivate();
/**
* Handle any table layout work that needs to be done for the current block.
*
* This function is called from nextParag().
*/
void handleTable();
/**
* Handle table breaking both forced and if cell is too high.
*
* This function is called from handleTable().
*/
void handleTableBreak(QTextTableCell &previousCell, QTextTable *table);
void drawStrikeOuts(QPainter *painter, const QTextFragment ¤tFragment,
const QTextLine &line, qreal x1, qreal x2, const int startOfFragmentInBlock,
const int fragmentToLineOffset) const;
void drawUnderlines(QPainter *painter, const QTextFragment ¤tFragment,
const QTextLine &line, qreal x1, qreal x2, const int startOfFragmentInBlock,
const int fragmentToLineOffset) const;
private:
KoStyleManager *m_styleManager;
KoChangeTracker *m_changeTracker;
qreal m_y;
QTextBlock m_block;
KoTextBlockData *m_blockData;
QTextBlockFormat m_format;
QTextBlock::Iterator m_fragmentIterator;
KoTextShapeData *m_data;
bool m_newShape, m_newParag, m_reset, m_isRtl, m_inTable;
KoInsets m_borderInsets;
KoInsets m_shapeBorder;
KoTextDocumentLayout *m_parent;
QHash<int, qreal> m_inlineObjectHeights; // maps text-position to whole-line-height of an inline object
TextShape *m_textShape;
// demoText feature
bool m_demoText, m_endOfDemoText;
// tab setting
qreal m_defaultTabSizing;
int m_currentTabStop; // = n, where we should be looking from the nth tab stop onwards when
// we decorate the tab for the text of a fragment
int m_dropCapsNChars, m_dropCapsAffectsNMoreLines;
qreal m_dropCapsAffectedLineWidthAdjust, m_y_justBelowDropCaps;
QString m_currentMasterPage;
TableLayout m_tableLayout; /**< Table layout. */
QTextTableCell m_tableCell; /**< Current table cell. */
bool m_restartingAfterTableBreak; /** We are in a re-layout that was a result of a break in a table. */
bool m_restartingFirstCellAfterTableBreak; /** We are in a re-layout that was a result of a break in a table. only true first cell after */
};
#endif
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