Long live Qt 4.5!

1 files changed, 3224 insertions, 0 deletions

diff --git a/src/gui/text/qtextdocumentlayout.cpp b/src/gui/text/qtextdocumentlayout.cpp
new file mode 100644
index 0000000000..c66d0c1ed0
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+++ b/src/gui/text/qtextdocumentlayout.cpp
@@ -0,0 +1,3224 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtextdocumentlayout_p.h"
+#include "qtextdocument_p.h"
+#include "qtextimagehandler_p.h"
+#include "qtexttable.h"
+#include "qtextlist.h"
+#include "qtextengine_p.h"
+#include "private/qcssutil_p.h"
+
+#include "qabstracttextdocumentlayout_p.h"
+#include "qcssparser_p.h"
+
+#include <qpainter.h>
+#include <qmath.h>
+#include <qrect.h>
+#include <qpalette.h>
+#include <qdebug.h>
+#include <qvarlengtharray.h>
+#include <limits.h>
+#include <qstyle.h>
+#include <qbasictimer.h>
+#include "private/qfunctions_p.h"
+
+// #define LAYOUT_DEBUG
+
+#ifdef LAYOUT_DEBUG
+#define LDEBUG qDebug()
+#define INC_INDENT debug_indent += "  "
+#define DEC_INDENT debug_indent = debug_indent.left(debug_indent.length()-2)
+#else
+#define LDEBUG if(0) qDebug()
+#define INC_INDENT do {} while(0)
+#define DEC_INDENT do {} while(0)
+#endif
+
+QT_BEGIN_NAMESPACE
+
+extern int qt_defaultDpi();
+
+// ################ should probably add frameFormatChange notification!
+
+struct QLayoutStruct;
+
+class QTextFrameData : public QTextFrameLayoutData
+{
+public:
+    QTextFrameData();
+
+    // relative to parent frame
+    QFixedPoint position;
+    QFixedSize size;
+
+    // contents starts at (margin+border/margin+border)
+    QFixed topMargin;
+    QFixed bottomMargin;
+    QFixed leftMargin;
+    QFixed rightMargin;
+    QFixed border;
+    QFixed padding;
+    // contents width includes padding (as we need to treat this on a per cell basis for tables)
+    QFixed contentsWidth;
+    QFixed contentsHeight;
+    QFixed oldContentsWidth;
+
+    // accumulated margins
+    QFixed effectiveTopMargin;
+    QFixed effectiveBottomMargin;
+
+    QFixed minimumWidth;
+    QFixed maximumWidth;
+
+    QLayoutStruct *currentLayoutStruct;
+
+    bool sizeDirty;
+    bool layoutDirty;
+
+    QList<QPointer<QTextFrame> > floats;
+};
+
+QTextFrameData::QTextFrameData()
+    : maximumWidth(QFIXED_MAX),
+      currentLayoutStruct(0), sizeDirty(true), layoutDirty(true)
+{
+}
+
+struct QLayoutStruct {
+    QLayoutStruct() : maximumWidth(QFIXED_MAX), fullLayout(false)
+    {}
+    QTextFrame *frame;
+    QFixed x_left;
+    QFixed x_right;
+    QFixed frameY; // absolute y position of the current frame
+    QFixed y; // always relative to the current frame
+    QFixed contentsWidth;
+    QFixed minimumWidth;
+    QFixed maximumWidth;
+    bool fullLayout;
+    QList<QTextFrame *> pendingFloats;
+    QFixed pageHeight;
+    QFixed pageBottom;
+    QFixed pageTopMargin;
+    QFixed pageBottomMargin;
+    QRectF updateRect;
+    QRectF updateRectForFloats;
+
+    inline void addUpdateRectForFloat(const QRectF &rect) {
+        if (updateRectForFloats.isValid())
+            updateRectForFloats |= rect;
+        else
+            updateRectForFloats = rect;
+    }
+
+    inline QFixed absoluteY() const
+    { return frameY + y; }
+
+    inline int currentPage() const
+    { return pageHeight == 0 ? 0 : (absoluteY() / pageHeight).truncate(); }
+
+    inline void newPage()
+    { if (pageHeight == QFIXED_MAX) return; pageBottom += pageHeight; y = pageBottom - pageHeight + pageBottomMargin + pageTopMargin - frameY; }
+};
+
+class QTextTableData : public QTextFrameData
+{
+public:
+    QFixed cellSpacing, cellPadding;
+    qreal deviceScale;
+    QVector<QFixed> minWidths;
+    QVector<QFixed> maxWidths;
+    QVector<QFixed> widths;
+    QVector<QFixed> heights;
+    QVector<QFixed> columnPositions;
+    QVector<QFixed> rowPositions;
+
+    QVector<QFixed> cellVerticalOffsets;
+
+    QFixed headerHeight;
+
+    // maps from cell index (row + col * rowCount) to child frames belonging to
+    // the specific cell
+    QMultiHash<int, QTextFrame *> childFrameMap;
+
+    inline QFixed cellWidth(int column, int colspan) const
+    { return columnPositions.at(column + colspan - 1) + widths.at(column + colspan - 1)
+             - columnPositions.at(column); }
+
+    inline void calcRowPosition(int row)
+    {
+        if (row > 0)
+            rowPositions[row] = rowPositions.at(row - 1) + heights.at(row - 1) + border + cellSpacing + border;
+    }
+
+    QRectF cellRect(const QTextTableCell &cell) const;
+
+    inline QFixed paddingProperty(const QTextFormat &format, QTextFormat::Property property) const
+    {
+        QVariant v = format.property(property);
+        if (v.isNull()) {
+            return cellPadding;
+        } else {
+            Q_ASSERT(v.type() == QVariant::Double);
+            return QFixed::fromReal(v.toDouble() * deviceScale);
+        }
+    }
+
+    inline QFixed topPadding(const QTextFormat &format) const
+    {
+        return paddingProperty(format, QTextFormat::TableCellTopPadding);
+    }
+
+    inline QFixed bottomPadding(const QTextFormat &format) const
+    {
+        return paddingProperty(format, QTextFormat::TableCellBottomPadding);
+    }
+
+    inline QFixed leftPadding(const QTextFormat &format) const
+    {
+        return paddingProperty(format, QTextFormat::TableCellLeftPadding);
+    }
+
+    inline QFixed rightPadding(const QTextFormat &format) const
+    {
+        return paddingProperty(format, QTextFormat::TableCellRightPadding);
+    }
+
+    inline QFixedPoint cellPosition(const QTextTableCell &cell) const
+    {
+        const QTextFormat fmt = cell.format();
+        return cellPosition(cell.row(), cell.column()) + QFixedPoint(leftPadding(fmt), topPadding(fmt));
+    }
+
+    void updateTableSize();
+
+private:
+    inline QFixedPoint cellPosition(int row, int col) const
+    { return QFixedPoint(columnPositions.at(col), rowPositions.at(row) + cellVerticalOffsets.at(col + row * widths.size())); }
+};
+
+static QTextFrameData *createData(QTextFrame *f)
+{
+    QTextFrameData *data;
+    if (qobject_cast<QTextTable *>(f))
+        data = new QTextTableData;
+    else
+        data = new QTextFrameData;
+    f->setLayoutData(data);
+    return data;
+}
+
+static inline QTextFrameData *data(QTextFrame *f)
+{
+    QTextFrameData *data = static_cast<QTextFrameData *>(f->layoutData());
+    if (!data)
+        data = createData(f);
+    return data;
+}
+
+static bool isFrameFromInlineObject(QTextFrame *f)
+{
+    return f->firstPosition() > f->lastPosition();
+}
+
+void QTextTableData::updateTableSize()
+{
+    const QFixed effectiveTopMargin = this->topMargin + border + padding;
+    const QFixed effectiveBottomMargin = this->bottomMargin + border + padding;
+    const QFixed effectiveLeftMargin = this->leftMargin + border + padding;
+    const QFixed effectiveRightMargin = this->rightMargin + border + padding;
+    size.height = contentsHeight == -1
+                   ? rowPositions.last() + heights.last() + padding + border + cellSpacing + effectiveBottomMargin
+                   : effectiveTopMargin + contentsHeight + effectiveBottomMargin;
+    size.width = effectiveLeftMargin + contentsWidth + effectiveRightMargin;
+}
+
+QRectF QTextTableData::cellRect(const QTextTableCell &cell) const
+{
+    const int row = cell.row();
+    const int rowSpan = cell.rowSpan();
+    const int column = cell.column();
+    const int colSpan = cell.columnSpan();
+
+    return QRectF(columnPositions.at(column).toReal(),
+                  rowPositions.at(row).toReal(),
+                  (columnPositions.at(column + colSpan - 1) + widths.at(column + colSpan - 1) - columnPositions.at(column)).toReal(),
+                  (rowPositions.at(row + rowSpan - 1) + heights.at(row + rowSpan - 1) - rowPositions.at(row)).toReal());
+}
+
+static inline bool isEmptyBlockBeforeTable(const QTextBlock &block, const QTextBlockFormat &format, const QTextFrame::Iterator &nextIt)
+{
+    return !nextIt.atEnd()
+           && qobject_cast<QTextTable *>(nextIt.currentFrame())
+           && block.isValid()
+           && block.length() == 1
+           && !format.hasProperty(QTextFormat::BlockTrailingHorizontalRulerWidth)
+           && !format.hasProperty(QTextFormat::BackgroundBrush)
+           && nextIt.currentFrame()->firstPosition() == block.position() + 1
+           ;
+}
+
+static inline bool isEmptyBlockBeforeTable(QTextFrame::Iterator it)
+{
+    QTextFrame::Iterator next = it; ++next;
+    if (it.currentFrame())
+        return false;
+    QTextBlock block = it.currentBlock();
+    return isEmptyBlockBeforeTable(block, block.blockFormat(), next);
+}
+
+static inline bool isEmptyBlockAfterTable(const QTextBlock &block, const QTextFrame *previousFrame)
+{
+    return qobject_cast<const QTextTable *>(previousFrame)
+           && block.isValid()
+           && block.length() == 1
+           && previousFrame->lastPosition() == block.position() - 1
+           ;
+}
+
+static inline bool isLineSeparatorBlockAfterTable(const QTextBlock &block, const QTextFrame *previousFrame)
+{
+    return qobject_cast<const QTextTable *>(previousFrame)
+           && block.isValid()
+           && block.length() > 1
+           && block.text().at(0) == QChar::LineSeparator
+           && previousFrame->lastPosition() == block.position() - 1
+           ;
+}
+
+/*
+
+Optimisation strategies:
+
+HTML layout:
+
+* Distinguish between normal and special flow. For normal flow the condition:
+  y1 > y2 holds for all blocks with b1.key() > b2.key().
+* Special flow is: floats, table cells
+
+* Normal flow within table cells. Tables (not cells) are part of the normal flow.
+
+
+* If blocks grows/shrinks in height and extends over whole page width at the end, move following blocks.
+* If height doesn't change, no need to do anything
+
+Table cells:
+
+* If minWidth of cell changes, recalculate table width, relayout if needed.
+* What about maxWidth when doing auto layout?
+
+Floats:
+* need fixed or proportional width, otherwise don't float!
+* On width/height change relayout surrounding paragraphs.
+
+Document width change:
+* full relayout needed
+
+
+Float handling:
+
+* Floats are specified by a special format object.
+* currently only floating images are implemented.
+
+*/
+
+/*
+
+   On the table layouting:
+
+   +---[ table border ]-------------------------
+   |      [ cell spacing ]
+   |  +------[ cell border ]-----+  +--------
+   |  |                          |  |
+   |  |
+   |  |
+   |  |
+   |
+
+   rowPositions[i] and columnPositions[i] point at the cell content
+   position. So for example the left border is drawn at
+   x = columnPositions[i] - fd->border and similar for y.
+
+*/
+
+struct QCheckPoint
+{
+    QFixed y;
+    QFixed frameY; // absolute y position of the current frame
+    int positionInFrame;
+    QFixed minimumWidth;
+    QFixed maximumWidth;
+    QFixed contentsWidth;
+};
+Q_DECLARE_TYPEINFO(QCheckPoint, Q_PRIMITIVE_TYPE);
+
+Q_STATIC_GLOBAL_OPERATOR bool operator<(const QCheckPoint &checkPoint, QFixed y)
+{
+    return checkPoint.y < y;
+}
+
+Q_STATIC_GLOBAL_OPERATOR bool operator<(const QCheckPoint &checkPoint, int pos)
+{
+    return checkPoint.positionInFrame < pos;
+}
+
+static void fillBackground(QPainter *p, const QRectF &rect, QBrush brush, const QPointF &origin, QRectF gradientRect = QRectF())
+{
+    p->save();
+    if (brush.style() >= Qt::LinearGradientPattern && brush.style() <= Qt::ConicalGradientPattern) {
+        if (!gradientRect.isNull()) {
+            QTransform m;
+            m.translate(gradientRect.left(), gradientRect.top());
+            m.scale(gradientRect.width(), gradientRect.height());
+            brush.setTransform(m);
+            const_cast<QGradient *>(brush.gradient())->setCoordinateMode(QGradient::LogicalMode);
+        }
+    } else {
+        p->setBrushOrigin(origin);
+    }
+    p->fillRect(rect, brush);
+    p->restore();
+}
+
+class QTextDocumentLayoutPrivate : public QAbstractTextDocumentLayoutPrivate
+{
+    Q_DECLARE_PUBLIC(QTextDocumentLayout)
+public:
+    QTextDocumentLayoutPrivate();
+
+    QTextOption::WrapMode wordWrapMode;
+#ifdef LAYOUT_DEBUG
+    mutable QString debug_indent;
+#endif
+
+    int fixedColumnWidth;
+    int cursorWidth;
+
+    QSizeF lastReportedSize;
+    QRectF viewportRect;
+    QRectF clipRect;
+
+    mutable int currentLazyLayoutPosition;
+    mutable int lazyLayoutStepSize;
+    QBasicTimer layoutTimer;
+    mutable QBasicTimer sizeChangedTimer;
+    uint showLayoutProgress : 1;
+    uint insideDocumentChange : 1;
+
+    int lastPageCount;
+    qreal idealWidth;
+    bool contentHasAlignment;
+
+    QFixed blockIndent(const QTextBlockFormat &blockFormat) const;
+
+    void drawFrame(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context,
+                   QTextFrame *f) const;
+    void drawFlow(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context,
+                  QTextFrame::Iterator it, const QList<QTextFrame *> &floats, QTextBlock *cursorBlockNeedingRepaint) const;
+    void drawBlock(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context,
+                   QTextBlock bl, bool inRootFrame) const;
+    void drawListItem(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context,
+                      QTextBlock bl, const QTextCharFormat *selectionFormat) const;
+    void drawTableCell(const QRectF &cellRect, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &cell_context,
+                       QTextTable *table, QTextTableData *td, int r, int c,
+                       QTextBlock *cursorBlockNeedingRepaint, QPointF *cursorBlockOffset) const;
+    void drawBorder(QPainter *painter, const QRectF &rect, qreal topMargin, qreal bottomMargin, qreal border,
+                    const QBrush &brush, QTextFrameFormat::BorderStyle style) const;
+    void drawFrameDecoration(QPainter *painter, QTextFrame *frame, QTextFrameData *fd, const QRectF &clip, const QRectF &rect) const;
+
+    enum HitPoint {
+        PointBefore,
+        PointAfter,
+        PointInside,
+        PointExact
+    };
+    HitPoint hitTest(QTextFrame *frame, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const;
+    HitPoint hitTest(QTextFrame::Iterator it, HitPoint hit, const QFixedPoint &p,
+                     int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const;
+    HitPoint hitTest(QTextTable *table, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const;
+    HitPoint hitTest(QTextBlock bl, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const;
+
+    QLayoutStruct layoutCell(QTextTable *t, const QTextTableCell &cell, QFixed width,
+                            int layoutFrom, int layoutTo, QTextTableData *tableData, QFixed absoluteTableY,
+                            bool withPageBreaks);
+    void setCellPosition(QTextTable *t, const QTextTableCell &cell, const QPointF &pos);
+    QRectF layoutTable(QTextTable *t, int layoutFrom, int layoutTo, QFixed parentY);
+
+    void positionFloat(QTextFrame *frame, QTextLine *currentLine = 0);
+
+    // calls the next one
+    QRectF layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed parentY = 0);
+    QRectF layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed frameWidth, QFixed frameHeight, QFixed parentY = 0);
+
+    void layoutBlock(const QTextBlock &bl, int blockPosition, const QTextBlockFormat &blockFormat,
+                     QLayoutStruct *layoutStruct, int layoutFrom, int layoutTo, const QTextBlockFormat *previousBlockFormat);
+    void layoutFlow(QTextFrame::Iterator it, QLayoutStruct *layoutStruct, int layoutFrom, int layoutTo, QFixed width = 0);
+    void pageBreakInsideTable(QTextTable *table, QLayoutStruct *layoutStruct);
+
+
+    void floatMargins(const QFixed &y, const QLayoutStruct *layoutStruct, QFixed *left, QFixed *right) const;
+    QFixed findY(QFixed yFrom, const QLayoutStruct *layoutStruct, QFixed requiredWidth) const;
+
+    QVector<QCheckPoint> checkPoints;
+
+    QTextFrame::Iterator frameIteratorForYPosition(QFixed y) const;
+    QTextFrame::Iterator frameIteratorForTextPosition(int position) const;
+
+    void ensureLayouted(QFixed y) const;
+    void ensureLayoutedByPosition(int position) const;
+    inline void ensureLayoutFinished() const
+    { ensureLayoutedByPosition(INT_MAX); }
+    void layoutStep() const;
+
+    QRectF frameBoundingRectInternal(QTextFrame *frame) const;
+
+    qreal scaleToDevice(qreal value) const;
+    QFixed scaleToDevice(QFixed value) const;
+};
+
+QTextDocumentLayoutPrivate::QTextDocumentLayoutPrivate()
+    : fixedColumnWidth(-1),
+      cursorWidth(1),
+      currentLazyLayoutPosition(-1),
+      lazyLayoutStepSize(1000),
+      lastPageCount(-1)
+{
+    showLayoutProgress = true;
+    insideDocumentChange = false;
+    idealWidth = 0;
+    contentHasAlignment = false;
+}
+
+QTextFrame::Iterator QTextDocumentLayoutPrivate::frameIteratorForYPosition(QFixed y) const
+{
+    QTextFrame *rootFrame = document->rootFrame();
+
+    if (checkPoints.isEmpty()
+        || y < 0 || y > data(rootFrame)->size.height)
+        return rootFrame->begin();
+
+    QVector<QCheckPoint>::ConstIterator checkPoint = qLowerBound(checkPoints.begin(), checkPoints.end(), y);
+    if (checkPoint == checkPoints.end())
+        return rootFrame->begin();
+
+    if (checkPoint != checkPoints.begin())
+        --checkPoint;
+
+    const int position = rootFrame->firstPosition() + checkPoint->positionInFrame;
+    return frameIteratorForTextPosition(position);
+}
+
+QTextFrame::Iterator QTextDocumentLayoutPrivate::frameIteratorForTextPosition(int position) const
+{
+    QTextFrame *rootFrame = docPrivate->rootFrame();
+
+    const QTextDocumentPrivate::BlockMap &map = docPrivate->blockMap();
+    const int begin = map.findNode(rootFrame->firstPosition());
+    const int end = map.findNode(rootFrame->lastPosition()+1);
+
+    const int block = map.findNode(position);
+    const int blockPos = map.position(block);
+
+    QTextFrame::iterator it(rootFrame, block, begin, end);
+
+    QTextFrame *containingFrame = docPrivate->frameAt(blockPos);
+    if (containingFrame != rootFrame) {
+        while (containingFrame->parentFrame() != rootFrame) {
+            containingFrame = containingFrame->parentFrame();
+            Q_ASSERT(containingFrame);
+        }
+
+        it.cf = containingFrame;
+        it.cb = 0;
+    }
+
+    return it;
+}
+
+QTextDocumentLayoutPrivate::HitPoint
+QTextDocumentLayoutPrivate::hitTest(QTextFrame *frame, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const
+{
+    QTextFrameData *fd = data(frame);
+    // #########
+    if (fd->layoutDirty)
+        return PointAfter;
+    Q_ASSERT(!fd->layoutDirty);
+    Q_ASSERT(!fd->sizeDirty);
+    const QFixedPoint relativePoint(point.x - fd->position.x, point.y - fd->position.y);
+
+    QTextFrame *rootFrame = docPrivate->rootFrame();
+
+//     LDEBUG << "checking frame" << frame->firstPosition() << "point=" << point
+//            << "position" << fd->position << "size" << fd->size;
+    if (frame != rootFrame) {
+        if (relativePoint.y < 0 || relativePoint.x < 0) {
+            *position = frame->firstPosition() - 1;
+//             LDEBUG << "before pos=" << *position;
+            return PointBefore;
+        } else if (relativePoint.y > fd->size.height || relativePoint.x > fd->size.width) {
+            *position = frame->lastPosition() + 1;
+//             LDEBUG << "after pos=" << *position;
+            return PointAfter;
+        }
+    }
+
+    if (isFrameFromInlineObject(frame)) {
+        *position = frame->firstPosition() - 1;
+        return PointExact;
+    }
+
+    if (QTextTable *table = qobject_cast<QTextTable *>(frame)) {
+        const int rows = table->rows();
+        const int columns = table->columns();
+        QTextTableData *td = static_cast<QTextTableData *>(data(table));
+
+        if (!td->childFrameMap.isEmpty()) {
+            for (int r = 0; r < rows; ++r) {
+                for (int c = 0; c < columns; ++c) {
+                    QTextTableCell cell = table->cellAt(r, c);
+                    if (cell.row() != r || cell.column() != c)
+                        continue;
+
+                    QRectF cellRect = td->cellRect(cell);
+                    const QFixedPoint cellPos = QFixedPoint::fromPointF(cellRect.topLeft());
+                    const QFixedPoint pointInCell = relativePoint - cellPos;
+
+                    const QList<QTextFrame *> childFrames = td->childFrameMap.values(r + c * rows);
+                    for (int i = 0; i < childFrames.size(); ++i) {
+                        QTextFrame *child = childFrames.at(i);
+                        if (isFrameFromInlineObject(child)
+                            && child->frameFormat().position() != QTextFrameFormat::InFlow
+                            && hitTest(child, pointInCell, position, l, accuracy) == PointExact)
+                        {
+                            return PointExact;
+                        }
+                    }
+                }
+            }
+        }
+
+        return hitTest(table, relativePoint, position, l, accuracy);
+    }
+
+    const QList<QTextFrame *> childFrames = frame->childFrames();
+    for (int i = 0; i < childFrames.size(); ++i) {
+        QTextFrame *child = childFrames.at(i);
+        if (isFrameFromInlineObject(child)
+            && child->frameFormat().position() != QTextFrameFormat::InFlow
+            && hitTest(child, relativePoint, position, l, accuracy) == PointExact)
+        {
+            return PointExact;
+        }
+    }
+
+    QTextFrame::Iterator it = frame->begin();
+
+    if (frame == rootFrame) {
+        it = frameIteratorForYPosition(relativePoint.y);
+
+        Q_ASSERT(it.parentFrame() == frame);
+    }
+
+    if (it.currentFrame())
+        *position = it.currentFrame()->firstPosition();
+    else
+        *position = it.currentBlock().position();
+
+    return hitTest(it, PointBefore, relativePoint, position, l, accuracy);
+}
+
+QTextDocumentLayoutPrivate::HitPoint
+QTextDocumentLayoutPrivate::hitTest(QTextFrame::Iterator it, HitPoint hit, const QFixedPoint &p,
+                                    int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const
+{
+    INC_INDENT;
+
+    for (; !it.atEnd(); ++it) {
+        QTextFrame *c = it.currentFrame();
+        HitPoint hp;
+        int pos = -1;
+        if (c) {
+            hp = hitTest(c, p, &pos, l, accuracy);
+        } else {
+            hp = hitTest(it.currentBlock(), p, &pos, l, accuracy);
+        }
+        if (hp >= PointInside) {
+            if (isEmptyBlockBeforeTable(it))
+                continue;
+            hit = hp;
+            *position = pos;
+            break;
+        }
+        if (hp == PointBefore && pos < *position) {
+            *position = pos;
+            hit = hp;
+        } else if (hp == PointAfter && pos > *position) {
+            *position = pos;
+            hit = hp;
+        }
+    }
+
+    DEC_INDENT;
+//     LDEBUG << "inside=" << hit << " pos=" << *position;
+    return hit;
+}
+
+QTextDocumentLayoutPrivate::HitPoint
+QTextDocumentLayoutPrivate::hitTest(QTextTable *table, const QFixedPoint &point,
+                                    int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const
+{
+    QTextTableData *td = static_cast<QTextTableData *>(data(table));
+
+    QVector<QFixed>::ConstIterator rowIt = qLowerBound(td->rowPositions.constBegin(), td->rowPositions.constEnd(), point.y);
+    if (rowIt == td->rowPositions.constEnd()) {
+        rowIt = td->rowPositions.constEnd() - 1;
+    } else if (rowIt != td->rowPositions.constBegin()) {
+        --rowIt;
+    }
+
+    QVector<QFixed>::ConstIterator colIt = qLowerBound(td->columnPositions.constBegin(), td->columnPositions.constEnd(), point.x);
+    if (colIt == td->columnPositions.constEnd()) {
+        colIt = td->columnPositions.constEnd() - 1;
+    } else if (colIt != td->columnPositions.constBegin()) {
+        --colIt;
+    }
+
+    QTextTableCell cell = table->cellAt(rowIt - td->rowPositions.constBegin(),
+                                        colIt - td->columnPositions.constBegin());
+    if (!cell.isValid())
+        return PointBefore;
+
+    *position = cell.firstPosition();
+
+    HitPoint hp = hitTest(cell.begin(), PointInside, point - td->cellPosition(cell), position, l, accuracy);
+
+    if (hp == PointExact)
+        return hp;
+    if (hp == PointAfter)
+        *position = cell.lastPosition();
+    return PointInside;
+}
+
+QTextDocumentLayoutPrivate::HitPoint
+QTextDocumentLayoutPrivate::hitTest(QTextBlock bl, const QFixedPoint &point, int *position, QTextLayout **l,
+                                    Qt::HitTestAccuracy accuracy) const
+{
+    QTextLayout *tl = bl.layout();
+    QRectF textrect = tl->boundingRect();
+    textrect.translate(tl->position());
+//     LDEBUG << "    checking block" << bl.position() << "point=" << point
+//            << "    tlrect" << textrect;
+    *position = bl.position();
+    if (point.y.toReal() < textrect.top()) {
+//             LDEBUG << "    before pos=" << *position;
+        return PointBefore;
+    } else if (point.y.toReal() > textrect.bottom()) {
+        *position += bl.length();
+//             LDEBUG << "    after pos=" << *position;
+        return PointAfter;
+    }
+
+    QPointF pos = point.toPointF() - tl->position();
+
+    // ### rtl?
+
+    HitPoint hit = PointInside;
+    *l = tl;
+    int off = 0;
+    for (int i = 0; i < tl->lineCount(); ++i) {
+        QTextLine line = tl->lineAt(i);
+        const QRectF lr = line.naturalTextRect();
+        if (lr.top() > pos.y()) {
+            off = qMin(off, line.textStart());
+        } else if (lr.bottom() <= pos.y()) {
+            off = qMax(off, line.textStart() + line.textLength());
+        } else {
+            if (lr.left() <= pos.x() && lr.right() >= pos.x())
+                hit = PointExact;
+            // when trying to hit an anchor we want it to hit not only in the left
+            // half
+            if (accuracy == Qt::ExactHit)
+                off = line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
+            else
+                off = line.xToCursor(pos.x(), QTextLine::CursorBetweenCharacters);
+            break;
+        }
+    }
+    *position += off;
+
+//     LDEBUG << "    inside=" << hit << " pos=" << *position;
+    return hit;
+}
+
+// ### could be moved to QTextBlock
+QFixed QTextDocumentLayoutPrivate::blockIndent(const QTextBlockFormat &blockFormat) const
+{
+    qreal indent = blockFormat.indent();
+
+    QTextObject *object = document->objectForFormat(blockFormat);
+    if (object)
+        indent += object->format().toListFormat().indent();
+
+    if (qIsNull(indent))
+        return 0;
+
+    qreal scale = 1;
+    if (paintDevice) {
+        scale = qreal(paintDevice->logicalDpiY()) / qreal(qt_defaultDpi());
+    }
+
+    return QFixed::fromReal(indent * scale * document->indentWidth());
+}
+
+void QTextDocumentLayoutPrivate::drawBorder(QPainter *painter, const QRectF &rect, qreal topMargin, qreal bottomMargin,
+                                            qreal border, const QBrush &brush, QTextFrameFormat::BorderStyle style) const
+{
+    const qreal pageHeight = document->pageSize().height();
+    const int topPage = pageHeight > 0 ? static_cast<int>(rect.top() / pageHeight) : 0;
+    const int bottomPage = pageHeight > 0 ? static_cast<int>((rect.bottom() + border) / pageHeight) : 0;
+
+#ifndef QT_NO_CSSPARSER
+    QCss::BorderStyle cssStyle = static_cast<QCss::BorderStyle>(style + 1);
+#endif //QT_NO_CSSPARSER
+
+    bool turn_off_antialiasing = !(painter->renderHints() & QPainter::Antialiasing);
+    painter->setRenderHint(QPainter::Antialiasing);
+
+    for (int i = topPage; i <= bottomPage; ++i) {
+        QRectF clipped = rect.toRect();
+
+        if (topPage != bottomPage) {
+            clipped.setTop(qMax(clipped.top(), i * pageHeight + topMargin - border));
+            clipped.setBottom(qMin(clipped.bottom(), (i + 1) * pageHeight - bottomMargin));
+
+            if (clipped.bottom() <= clipped.top())
+                continue;
+        }
+#ifndef QT_NO_CSSPARSER
+        qDrawEdge(painter, clipped.left(), clipped.top(), clipped.left() + border, clipped.bottom() + border, 0, 0, QCss::LeftEdge, cssStyle, brush);
+        qDrawEdge(painter, clipped.left() + border, clipped.top(), clipped.right() + border, clipped.top() + border, 0, 0, QCss::TopEdge, cssStyle, brush);
+        qDrawEdge(painter, clipped.right(), clipped.top() + border, clipped.right() + border, clipped.bottom(), 0, 0, QCss::RightEdge, cssStyle, brush);
+        qDrawEdge(painter, clipped.left() + border, clipped.bottom(), clipped.right() + border, clipped.bottom() + border, 0, 0, QCss::BottomEdge, cssStyle, brush);
+#else
+        painter->save();
+        painter->setPen(Qt::NoPen);
+        painter->setBrush(brush);
+        painter->drawRect(QRectF(clipped.left(), clipped.top(), clipped.left() + border, clipped.bottom() + border));
+        painter->drawRect(QRectF(clipped.left() + border, clipped.top(), clipped.right() + border, clipped.top() + border));
+        painter->drawRect(QRectF(clipped.right(), clipped.top() + border, clipped.right() + border, clipped.bottom()));
+        painter->drawRect(QRectF(clipped.left() + border, clipped.bottom(), clipped.right() + border, clipped.bottom() + border));
+        painter->restore();
+#endif //QT_NO_CSSPARSER
+    }
+    if (turn_off_antialiasing)
+        painter->setRenderHint(QPainter::Antialiasing, false);
+}
+
+void QTextDocumentLayoutPrivate::drawFrameDecoration(QPainter *painter, QTextFrame *frame, QTextFrameData *fd, const QRectF &clip, const QRectF &rect) const
+{
+    if (fd->border != 0) {
+        painter->save();
+        painter->setBrush(Qt::lightGray);
+        painter->setPen(Qt::NoPen);
+
+        const qreal leftEdge = rect.left() + fd->leftMargin.toReal();
+        const qreal border = fd->border.toReal();
+        const qreal topMargin = fd->topMargin.toReal();
+        const qreal leftMargin = fd->leftMargin.toReal();
+        const qreal bottomMargin = fd->bottomMargin.toReal();
+        const qreal rightMargin = fd->rightMargin.toReal();
+        const qreal w = rect.width() - 2 * border - leftMargin - rightMargin;
+        const qreal h = rect.height() - 2 * border - topMargin - bottomMargin;
+
+        drawBorder(painter, QRectF(leftEdge, rect.top() + topMargin, w + border, h + border),
+                   fd->effectiveTopMargin.toReal(), fd->effectiveBottomMargin.toReal(),
+                   border, frame->frameFormat().borderBrush(), frame->frameFormat().borderStyle());
+
+        painter->restore();
+    }
+
+    const QBrush bg = frame->frameFormat().background();
+    if (bg != Qt::NoBrush) {
+        QRectF bgRect = rect;
+        bgRect.adjust((fd->leftMargin + fd->border).toReal(),
+                      (fd->topMargin + fd->border).toReal(),
+                      - (fd->rightMargin + fd->border).toReal(),
+                      - (fd->bottomMargin + fd->border).toReal());
+
+        QRectF gradientRect; // invalid makes it default to bgRect
+        QPointF origin = bgRect.topLeft();
+        if (!frame->parentFrame()) {
+            bgRect = clip;
+            gradientRect.setWidth(painter->device()->width());
+            gradientRect.setHeight(painter->device()->height());
+        }
+        fillBackground(painter, bgRect, bg, origin, gradientRect);
+    }
+}
+
+static void adjustContextSelectionsForCell(QAbstractTextDocumentLayout::PaintContext &cell_context,
+                                           const QTextTableCell &cell,
+                                           int r, int c,
+                                           const int *selectedTableCells)
+{
+    for (int i = 0; i < cell_context.selections.size(); ++i) {
+        int row_start = selectedTableCells[i * 4];
+        int col_start = selectedTableCells[i * 4 + 1];
+        int num_rows = selectedTableCells[i * 4 + 2];
+        int num_cols = selectedTableCells[i * 4 + 3];
+
+        if (row_start != -1) {
+            if (r >= row_start && r < row_start + num_rows
+                && c >= col_start && c < col_start + num_cols)
+            {
+                int firstPosition = cell.firstPosition();
+                int lastPosition = cell.lastPosition();
+
+                // make sure empty cells are still selected
+                if (firstPosition == lastPosition)
+                    ++lastPosition;
+
+                cell_context.selections[i].cursor.setPosition(firstPosition);
+                cell_context.selections[i].cursor.setPosition(lastPosition, QTextCursor::KeepAnchor);
+            } else {
+                cell_context.selections[i].cursor.clearSelection();
+            }
+        }
+
+        // FullWidthSelection is not useful for tables
+        cell_context.selections[i].format.clearProperty(QTextFormat::FullWidthSelection);
+    }
+}
+
+void QTextDocumentLayoutPrivate::drawFrame(const QPointF &offset, QPainter *painter,
+                                           const QAbstractTextDocumentLayout::PaintContext &context,
+                                           QTextFrame *frame) const
+{
+    QTextFrameData *fd = data(frame);
+    // #######
+    if (fd->layoutDirty)
+        return;
+    Q_ASSERT(!fd->sizeDirty);
+    Q_ASSERT(!fd->layoutDirty);
+
+    const QPointF off = offset + fd->position.toPointF();
+    if (context.clip.isValid()
+        && (off.y() > context.clip.bottom() || off.y() + fd->size.height.toReal() < context.clip.top()
+            || off.x() > context.clip.right() || off.x() + fd->size.width.toReal() < context.clip.left()))
+        return;
+
+//     LDEBUG << debug_indent << "drawFrame" << frame->firstPosition() << "--" << frame->lastPosition() << "at" << offset;
+//     INC_INDENT;
+
+    // if the cursor is /on/ a table border we may need to repaint it
+    // afterwards, as we usually draw the decoration first
+    QTextBlock cursorBlockNeedingRepaint;
+    QPointF offsetOfRepaintedCursorBlock = off;
+
+    QTextTable *table = qobject_cast<QTextTable *>(frame);
+    const QRectF frameRect(off, fd->size.toSizeF());
+
+    if (table) {
+        const int rows = table->rows();
+        const int columns = table->columns();
+        QTextTableData *td = static_cast<QTextTableData *>(data(table));
+
+        QVarLengthArray<int> selectedTableCells(context.selections.size() * 4);
+        for (int i = 0; i < context.selections.size(); ++i) {
+            const QAbstractTextDocumentLayout::Selection &s = context.selections.at(i);
+            int row_start = -1, col_start = -1, num_rows = -1, num_cols = -1;
+
+            if (s.cursor.currentTable() == table)
+                s.cursor.selectedTableCells(&row_start, &num_rows, &col_start, &num_cols);
+
+            selectedTableCells[i * 4] = row_start;
+            selectedTableCells[i * 4 + 1] = col_start;
+            selectedTableCells[i * 4 + 2] = num_rows;
+            selectedTableCells[i * 4 + 3] = num_cols;
+        }
+
+        QFixed pageHeight = QFixed::fromReal(document->pageSize().height());
+        if (pageHeight <= 0)
+            pageHeight = QFIXED_MAX;
+
+        const int tableStartPage = (td->position.y / pageHeight).truncate();
+        const int tableEndPage = ((td->position.y + td->size.height) / pageHeight).truncate();
+
+        qreal border = td->border.toReal();
+        drawFrameDecoration(painter, frame, fd, context.clip, frameRect);
+
+        // draw the table headers
+        const int headerRowCount = qMin(table->format().headerRowCount(), rows - 1);
+        int page = tableStartPage + 1;
+        while (page <= tableEndPage) {
+            const QFixed pageTop = page * pageHeight + td->effectiveTopMargin + td->cellSpacing + td->border;
+            const qreal headerOffset = (pageTop - td->rowPositions.at(0)).toReal();
+            for (int r = 0; r < headerRowCount; ++r) {
+                for (int c = 0; c < columns; ++c) {
+                    QTextTableCell cell = table->cellAt(r, c);
+                    QAbstractTextDocumentLayout::PaintContext cell_context = context;
+                    adjustContextSelectionsForCell(cell_context, cell, r, c, selectedTableCells.data());
+                    QRectF cellRect = td->cellRect(cell);
+
+                    cellRect.translate(off.x(), headerOffset);
+                    // we need to account for the cell border in the clipping test
+                    int leftAdjust = qMin(qreal(0), 1 - border);
+                    if (cell_context.clip.isValid() && !cellRect.adjusted(leftAdjust, leftAdjust, border, border).intersects(cell_context.clip))
+                        continue;
+
+                    drawTableCell(cellRect, painter, cell_context, table, td, r, c, &cursorBlockNeedingRepaint,
+                                  &offsetOfRepaintedCursorBlock);
+                }
+            }
+            ++page;
+        }
+
+        int firstRow = 0;
+        int lastRow = rows;
+
+        if (context.clip.isValid()) {
+            QVector<QFixed>::ConstIterator rowIt = qLowerBound(td->rowPositions.constBegin(), td->rowPositions.constEnd(), QFixed::fromReal(context.clip.top() - off.y()));
+            if (rowIt != td->rowPositions.constEnd() && rowIt != td->rowPositions.constBegin()) {
+                --rowIt;
+                firstRow = rowIt - td->rowPositions.constBegin();
+            }
+
+            rowIt = qUpperBound(td->rowPositions.constBegin(), td->rowPositions.constEnd(), QFixed::fromReal(context.clip.bottom() - off.y()));
+            if (rowIt != td->rowPositions.constEnd()) {
+                ++rowIt;
+                lastRow = rowIt - td->rowPositions.constBegin();
+            }
+        }
+
+        for (int c = 0; c < columns; ++c) {
+            QTextTableCell cell = table->cellAt(firstRow, c);
+            firstRow = qMin(firstRow, cell.row());
+        }
+
+        for (int r = firstRow; r < lastRow; ++r) {
+            for (int c = 0; c < columns; ++c) {
+                QTextTableCell cell = table->cellAt(r, c);
+                QAbstractTextDocumentLayout::PaintContext cell_context = context;
+                adjustContextSelectionsForCell(cell_context, cell, r, c, selectedTableCells.data());
+                QRectF cellRect = td->cellRect(cell);
+
+                cellRect.translate(off);
+                // we need to account for the cell border in the clipping test
+                int leftAdjust = qMin(qreal(0), 1 - border);
+                if (cell_context.clip.isValid() && !cellRect.adjusted(leftAdjust, leftAdjust, border, border).intersects(cell_context.clip))
+                    continue;
+
+                drawTableCell(cellRect, painter, cell_context, table, td, r, c, &cursorBlockNeedingRepaint,
+                              &offsetOfRepaintedCursorBlock);
+            }
+        }
+
+    } else {
+        drawFrameDecoration(painter, frame, fd, context.clip, frameRect);
+
+        QTextFrame::Iterator it = frame->begin();
+
+        if (frame == docPrivate->rootFrame())
+            it = frameIteratorForYPosition(QFixed::fromReal(context.clip.top()));
+
+        QList<QTextFrame *> floats;
+        for (int i = 0; i < fd->floats.count(); ++i)
+            floats.append(fd->floats.at(i));
+
+        drawFlow(off, painter, context, it, floats, &cursorBlockNeedingRepaint);
+    }
+
+    if (cursorBlockNeedingRepaint.isValid()) {
+        const QPen oldPen = painter->pen();
+        painter->setPen(context.palette.color(QPalette::Text));
+        const int cursorPos = context.cursorPosition - cursorBlockNeedingRepaint.position();
+        cursorBlockNeedingRepaint.layout()->drawCursor(painter, offsetOfRepaintedCursorBlock,
+                                                       cursorPos, cursorWidth);
+        painter->setPen(oldPen);
+    }
+
+//     DEC_INDENT;
+
+    return;
+}
+
+void QTextDocumentLayoutPrivate::drawTableCell(const QRectF &cellRect, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &cell_context,
+                                               QTextTable *table, QTextTableData *td, int r, int c,
+                                               QTextBlock *cursorBlockNeedingRepaint, QPointF *cursorBlockOffset) const
+{
+    QTextTableCell cell = table->cellAt(r, c);
+    int rspan = cell.rowSpan();
+    int cspan = cell.columnSpan();
+    if (rspan != 1) {
+        int cr = cell.row();
+        if (cr != r)
+            return;
+    }
+    if (cspan != 1) {
+        int cc = cell.column();
+        if (cc != c)
+            return;
+    }
+
+    QTextFormat fmt = cell.format();
+    const QFixed leftPadding = td->leftPadding(fmt);
+    const QFixed topPadding = td->topPadding(fmt);
+
+    if (td->border != 0) {
+        const QBrush oldBrush = painter->brush();
+        const QPen oldPen = painter->pen();
+
+        const qreal border = td->border.toReal();
+
+        QRectF borderRect(cellRect.left() - border, cellRect.top() - border, cellRect.width() + border, cellRect.height() + border);
+
+        // invert the border style for cells
+        QTextFrameFormat::BorderStyle cellBorder = table->format().borderStyle();
+        switch (cellBorder) {
+        case QTextFrameFormat::BorderStyle_Inset:
+            cellBorder = QTextFrameFormat::BorderStyle_Outset;
+            break;
+        case QTextFrameFormat::BorderStyle_Outset:
+            cellBorder = QTextFrameFormat::BorderStyle_Inset;
+            break;
+        case QTextFrameFormat::BorderStyle_Groove:
+            cellBorder = QTextFrameFormat::BorderStyle_Ridge;
+            break;
+        case QTextFrameFormat::BorderStyle_Ridge:
+            cellBorder = QTextFrameFormat::BorderStyle_Groove;
+            break;
+        default:
+            break;
+        }
+
+        qreal topMargin = (td->effectiveTopMargin + td->cellSpacing + td->border).toReal();
+        qreal bottomMargin = (td->effectiveBottomMargin + td->cellSpacing + td->border).toReal();
+
+        const int headerRowCount = qMin(table->format().headerRowCount(), table->rows() - 1);
+        if (r >= headerRowCount)
+            topMargin += td->headerHeight.toReal();
+
+        drawBorder(painter, borderRect, topMargin, bottomMargin,
+                   border, table->format().borderBrush(), cellBorder);
+
+        painter->setBrush(oldBrush);
+        painter->setPen(oldPen);
+    }
+
+    const QBrush bg = cell.format().background();
+    const QPointF brushOrigin = painter->brushOrigin();
+    if (bg.style() != Qt::NoBrush) {
+        fillBackground(painter, cellRect, bg, cellRect.topLeft());
+
+        if (bg.style() > Qt::SolidPattern)
+            painter->setBrushOrigin(cellRect.topLeft());
+    }
+
+    const QFixed verticalOffset = td->cellVerticalOffsets.at(c + r * table->columns());
+
+    const QPointF cellPos = QPointF(cellRect.left() + leftPadding.toReal(),
+                                    cellRect.top() + (topPadding + verticalOffset).toReal());
+
+    QTextBlock repaintBlock;
+    drawFlow(cellPos, painter, cell_context, cell.begin(),
+             td->childFrameMap.values(r + c * table->rows()),
+             &repaintBlock);
+    if (repaintBlock.isValid()) {
+        *cursorBlockNeedingRepaint = repaintBlock;
+        *cursorBlockOffset = cellPos;
+    }
+
+    if (bg.style() > Qt::SolidPattern)
+        painter->setBrushOrigin(brushOrigin);
+}
+
+void QTextDocumentLayoutPrivate::drawFlow(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context,
+                                          QTextFrame::Iterator it, const QList<QTextFrame *> &floats, QTextBlock *cursorBlockNeedingRepaint) const
+{
+    Q_Q(const QTextDocumentLayout);
+    const bool inRootFrame = (!it.atEnd() && it.parentFrame() && it.parentFrame()->parentFrame() == 0);
+
+    QVector<QCheckPoint>::ConstIterator lastVisibleCheckPoint = checkPoints.end();
+    if (inRootFrame && context.clip.isValid()) {
+        lastVisibleCheckPoint = qLowerBound(checkPoints.begin(), checkPoints.end(), QFixed::fromReal(context.clip.bottom()));
+    }
+
+    QTextBlock previousBlock;
+    QTextFrame *previousFrame = 0;
+
+    for (; !it.atEnd(); ++it) {
+        QTextFrame *c = it.currentFrame();
+
+        if (inRootFrame && !checkPoints.isEmpty()) {
+            int currentPosInDoc;
+            if (c)
+                currentPosInDoc = c->firstPosition();
+            else
+                currentPosInDoc = it.currentBlock().position();
+
+            // if we're past what is already laid out then we're better off
+            // not trying to draw things that may not be positioned correctly yet
+            if (currentPosInDoc >= checkPoints.last().positionInFrame)
+                break;
+
+            if (lastVisibleCheckPoint != checkPoints.end()
+                && context.clip.isValid()
+                && currentPosInDoc >= lastVisibleCheckPoint->positionInFrame
+               )
+                break;
+        }
+
+        if (c)
+            drawFrame(offset, painter, context, c);
+        else {
+            QAbstractTextDocumentLayout::PaintContext pc = context;
+            if (isEmptyBlockAfterTable(it.currentBlock(), previousFrame))
+                pc.selections.clear();
+            drawBlock(offset, painter, pc, it.currentBlock(), inRootFrame);
+        }
+
+        // when entering a table and the previous block is empty
+        // then layoutFlow 'hides' the block that just causes a
+        // new line by positioning it /on/ the table border. as we
+        // draw that block before the table itself the decoration
+        // 'overpaints' the cursor and we need to paint it afterwards
+        // again
+        if (isEmptyBlockBeforeTable(previousBlock, previousBlock.blockFormat(), it)
+            && previousBlock.contains(context.cursorPosition)
+           ) {
+            *cursorBlockNeedingRepaint = previousBlock;
+        }
+
+        previousBlock = it.currentBlock();
+        previousFrame = c;
+    }
+
+    for (int i = 0; i < floats.count(); ++i) {
+        QTextFrame *frame = floats.at(i);
+        if (!isFrameFromInlineObject(frame)
+            || frame->frameFormat().position() == QTextFrameFormat::InFlow)
+            continue;
+
+        const int pos = frame->firstPosition() - 1;
+        QTextCharFormat format = const_cast<QTextDocumentLayout *>(q)->format(pos);
+        QTextObjectInterface *handler = q->handlerForObject(format.objectType());
+        if (handler) {
+            QRectF rect = frameBoundingRectInternal(frame);
+            handler->drawObject(painter, rect, document, pos, format);
+        }
+    }
+}
+
+void QTextDocumentLayoutPrivate::drawBlock(const QPointF &offset, QPainter *painter,
+                                           const QAbstractTextDocumentLayout::PaintContext &context,
+                                           QTextBlock bl, bool inRootFrame) const
+{
+    const QTextLayout *tl = bl.layout();
+    QRectF r = tl->boundingRect();
+    r.translate(offset + tl->position());
+    if (context.clip.isValid() && (r.bottom() < context.clip.y() || r.top() > context.clip.bottom()))
+        return;
+//      LDEBUG << debug_indent << "drawBlock" << bl.position() << "at" << offset << "br" << tl->boundingRect();
+
+    QTextBlockFormat blockFormat = bl.blockFormat();
+
+    QBrush bg = blockFormat.background();
+    if (bg != Qt::NoBrush) {
+        QRectF rect = r;
+
+        // extend the background rectangle if we're in the root frame with NoWrap,
+        // as the rect of the text block will then be only the width of the text
+        // instead of the full page width
+        if (inRootFrame && document->pageSize().width() <= 0) {
+            const QTextFrameData *fd = data(document->rootFrame());
+            rect.setRight((fd->size.width - fd->rightMargin).toReal());
+        }
+
+        fillBackground(painter, rect, bg, r.topLeft());
+    }
+
+    QVector<QTextLayout::FormatRange> selections;
+    int blpos = bl.position();
+    int bllen = bl.length();
+    const QTextCharFormat *selFormat = 0;
+    for (int i = 0; i < context.selections.size(); ++i) {
+        const QAbstractTextDocumentLayout::Selection &range = context.selections.at(i);
+        const int selStart = range.cursor.selectionStart() - blpos;
+        const int selEnd = range.cursor.selectionEnd() - blpos;
+        if (selStart < bllen && selEnd > 0
+             && selEnd > selStart) {
+            QTextLayout::FormatRange o;
+            o.start = selStart;
+            o.length = selEnd - selStart;
+            o.format = range.format;
+            selections.append(o);
+        } else if (! range.cursor.hasSelection() && range.format.hasProperty(QTextFormat::FullWidthSelection)
+                   && bl.contains(range.cursor.position())) {
+            // for full width selections we don't require an actual selection, just
+            // a position to specify the line. that's more convenience in usage.
+            QTextLayout::FormatRange o;
+            QTextLine l = tl->lineForTextPosition(range.cursor.position() - blpos);
+            o.start = l.textStart();
+            o.length = l.textLength();
+            if (o.start + o.length == bllen - 1)
+                ++o.length; // include newline
+            o.format = range.format;
+            selections.append(o);
+       }
+        if (selStart < 0 && selEnd >= 1)
+            selFormat = &range.format;
+    }
+
+    QTextObject *object = document->objectForFormat(bl.blockFormat());
+    if (object && object->format().toListFormat().style() != QTextListFormat::ListStyleUndefined)
+        drawListItem(offset, painter, context, bl, selFormat);
+
+    QPen oldPen = painter->pen();
+    painter->setPen(context.palette.color(QPalette::Text));
+
+    tl->draw(painter, offset, selections, context.clip.isValid() ? (context.clip & clipRect) : clipRect);
+
+    if ((context.cursorPosition >= blpos && context.cursorPosition < blpos + bllen)
+        || (context.cursorPosition < -1 && !tl->preeditAreaText().isEmpty())) {
+        int cpos = context.cursorPosition;
+        if (cpos < -1)
+            cpos = tl->preeditAreaPosition() - (cpos + 2);
+        else
+            cpos -= blpos;
+        tl->drawCursor(painter, offset, cpos, cursorWidth);
+    }
+
+    if (blockFormat.hasProperty(QTextFormat::BlockTrailingHorizontalRulerWidth)) {
+        const qreal width = blockFormat.lengthProperty(QTextFormat::BlockTrailingHorizontalRulerWidth).value(r.width());
+        painter->setPen(context.palette.color(QPalette::Dark));
+        qreal y = r.bottom();
+        if (bl.length() == 1)
+            y = r.top() + r.height() / 2;
+
+        const qreal middleX = r.left() + r.width() / 2;
+        painter->drawLine(QLineF(middleX - width / 2, y, middleX + width / 2, y));
+    }
+
+    painter->setPen(oldPen);
+}
+
+
+void QTextDocumentLayoutPrivate::drawListItem(const QPointF &offset, QPainter *painter,
+                                              const QAbstractTextDocumentLayout::PaintContext &context,
+                                              QTextBlock bl, const QTextCharFormat *selectionFormat) const
+{
+    Q_Q(const QTextDocumentLayout);
+    const QTextBlockFormat blockFormat = bl.blockFormat();
+    const QTextCharFormat charFormat = QTextCursor(bl).charFormat();
+    QFont font(charFormat.font());
+    if (q->paintDevice())
+        font = QFont(font, q->paintDevice());
+
+    const QFontMetrics fontMetrics(font);
+    QTextObject * const object = document->objectForFormat(blockFormat);
+    const QTextListFormat lf = object->format().toListFormat();
+    int style = lf.style();
+    QString itemText;
+    QSizeF size;
+
+    if (blockFormat.hasProperty(QTextFormat::ListStyle))
+        style = QTextListFormat::Style(blockFormat.intProperty(QTextFormat::ListStyle));
+
+    QTextLayout *layout = bl.layout();
+    if (layout->lineCount() == 0)
+        return;
+    QTextLine firstLine = layout->lineAt(0);
+    Q_ASSERT(firstLine.isValid());
+    QPointF pos = (offset + layout->position()).toPoint();
+    Qt::LayoutDirection dir = docPrivate->defaultTextOption.textDirection();
+    if (blockFormat.hasProperty(QTextFormat::LayoutDirection))
+        dir = blockFormat.layoutDirection();
+    {
+        QRectF textRect = firstLine.naturalTextRect();
+        pos += textRect.topLeft().toPoint();
+        if (dir == Qt::RightToLeft)
+            pos.rx() += textRect.width();
+    }
+
+    switch (style) {
+    case QTextListFormat::ListDecimal:
+    case QTextListFormat::ListLowerAlpha:
+    case QTextListFormat::ListUpperAlpha:
+        itemText = static_cast<QTextList *>(object)->itemText(bl);
+        size.setWidth(fontMetrics.width(itemText));
+        size.setHeight(fontMetrics.height());
+        break;
+
+    case QTextListFormat::ListSquare:
+    case QTextListFormat::ListCircle:
+    case QTextListFormat::ListDisc:
+        size.setWidth(fontMetrics.lineSpacing() / 3);
+        size.setHeight(size.width());
+        break;
+
+    case QTextListFormat::ListStyleUndefined:
+        return;
+    default: return;
+    }
+
+    QRectF r(pos, size);
+
+    qreal xoff = fontMetrics.width(QLatin1Char(' '));
+    if (dir == Qt::LeftToRight)
+        xoff = -xoff - size.width();
+    r.translate( xoff, (fontMetrics.height() / 2 - size.height() / 2));
+
+    painter->save();
+
+    painter->setRenderHint(QPainter::Antialiasing);
+
+    if (selectionFormat) {
+        painter->setPen(QPen(selectionFormat->foreground(), 0));
+        painter->fillRect(r, selectionFormat->background());
+    } else {
+        QBrush fg = charFormat.foreground();
+        if (fg == Qt::NoBrush)
+            fg = context.palette.text();
+        painter->setPen(QPen(fg, 0));
+    }
+
+    QBrush brush = context.palette.brush(QPalette::Text);
+
+    switch (style) {
+    case QTextListFormat::ListDecimal:
+    case QTextListFormat::ListLowerAlpha:
+    case QTextListFormat::ListUpperAlpha: {
+        QTextLayout layout(itemText, font, q->paintDevice());
+        layout.setCacheEnabled(true);
+        QTextOption option(Qt::AlignLeft | Qt::AlignAbsolute);
+        option.setTextDirection(dir);
+        layout.setTextOption(option);
+        layout.beginLayout();
+        layout.createLine();
+        layout.endLayout();
+        layout.draw(painter, QPointF(r.left(), pos.y()));
+        break;
+    }
+    case QTextListFormat::ListSquare:
+        painter->fillRect(r, brush);
+        break;
+    case QTextListFormat::ListCircle:
+        painter->drawEllipse(r);
+        break;
+    case QTextListFormat::ListDisc:
+        painter->setBrush(brush);
+        painter->setPen(Qt::NoPen);
+        painter->drawEllipse(r);
+        painter->setBrush(Qt::NoBrush);
+        break;
+    case QTextListFormat::ListStyleUndefined:
+        break;
+    default:
+        break;
+    }
+
+    painter->restore();
+}
+
+static QFixed flowPosition(const QTextFrame::iterator it)
+{
+    if (it.atEnd())
+        return 0;
+
+    if (it.currentFrame()) {
+        return data(it.currentFrame())->position.y;
+    } else {
+        QTextBlock block = it.currentBlock();
+        QTextLayout *layout = block.layout();
+        if (layout->lineCount() == 0)
+            return QFixed::fromReal(layout->position().y());
+        else
+            return QFixed::fromReal(layout->position().y() + layout->lineAt(0).y());
+    }
+}
+
+static QFixed firstChildPos(const QTextFrame *f)
+{
+    return flowPosition(f->begin());
+}
+
+QLayoutStruct QTextDocumentLayoutPrivate::layoutCell(QTextTable *t, const QTextTableCell &cell, QFixed width,
+                                                    int layoutFrom, int layoutTo, QTextTableData *td,
+                                                    QFixed absoluteTableY, bool withPageBreaks)
+{
+    LDEBUG << "layoutCell";
+    QLayoutStruct layoutStruct;
+    layoutStruct.frame = t;
+    layoutStruct.minimumWidth = 0;
+    layoutStruct.maximumWidth = QFIXED_MAX;
+    layoutStruct.y = 0;
+
+    const QTextFormat fmt = cell.format();
+    const QFixed topPadding = td->topPadding(fmt);
+    if (withPageBreaks) {
+        layoutStruct.frameY = absoluteTableY + td->rowPositions.at(cell.row()) + topPadding;
+    }
+    layoutStruct.x_left = 0;
+    layoutStruct.x_right = width;
+    // we get called with different widths all the time (for example for figuring
+    // out the min/max widths), so we always have to do the full layout ;(
+    // also when for example in a table layoutFrom/layoutTo affect only one cell,
+    // making that one cell grow the available width of the other cells may change
+    // (shrink) and therefore when layoutCell gets called for them they have to
+    // be re-laid out, even if layoutFrom/layoutTo is not in their range. Hence
+    // this line:
+
+    layoutStruct.pageHeight = QFixed::fromReal(document->pageSize().height());
+    if (layoutStruct.pageHeight < 0 || !withPageBreaks)
+        layoutStruct.pageHeight = QFIXED_MAX;
+    const int currentPage = layoutStruct.currentPage();
+    layoutStruct.pageTopMargin = td->effectiveTopMargin + td->cellSpacing + td->border + topPadding;
+    layoutStruct.pageBottomMargin = td->effectiveBottomMargin + td->cellSpacing + td->border + td->bottomPadding(fmt);
+    layoutStruct.pageBottom = (currentPage + 1) * layoutStruct.pageHeight - layoutStruct.pageBottomMargin;
+
+    layoutStruct.fullLayout = true;
+
+    QFixed pageTop = currentPage * layoutStruct.pageHeight + layoutStruct.pageTopMargin - layoutStruct.frameY;
+    layoutStruct.y = qMax(layoutStruct.y, pageTop);
+
+    const QList<QTextFrame *> childFrames = td->childFrameMap.values(cell.row() + cell.column() * t->rows());
+    for (int i = 0; i < childFrames.size(); ++i) {
+        QTextFrame *frame = childFrames.at(i);
+        QTextFrameData *cd = data(frame);
+        cd->sizeDirty = true;
+    }
+
+    layoutFlow(cell.begin(), &layoutStruct, layoutFrom, layoutTo, width);
+
+    QFixed floatMinWidth;
+
+    // floats that are located inside the text (like inline images) aren't taken into account by
+    // layoutFlow with regards to the cell height (layoutStruct->y), so for a safety measure we
+    // do that here. For example with <td><img align="right" src="..." />blah</td>
+    // when the image happens to be higher than the text
+    for (int i = 0; i < childFrames.size(); ++i) {
+        QTextFrame *frame = childFrames.at(i);
+        QTextFrameData *cd = data(frame);
+
+        if (frame->frameFormat().position() != QTextFrameFormat::InFlow)
+            layoutStruct.y = qMax(layoutStruct.y, cd->position.y + cd->size.height);
+
+        floatMinWidth = qMax(floatMinWidth, cd->minimumWidth);
+    }
+
+    // constraint the maximumWidth by the minimum width of the fixed size floats, to
+    // keep them visible
+    layoutStruct.maximumWidth = qMax(layoutStruct.maximumWidth, floatMinWidth);
+
+    // as floats in cells get added to the table's float list but must not affect
+    // floats in other cells we must clear the list here.
+    data(t)->floats.clear();
+
+//    qDebug() << "layoutCell done";
+
+    return layoutStruct;
+}
+
+QRectF QTextDocumentLayoutPrivate::layoutTable(QTextTable *table, int layoutFrom, int layoutTo, QFixed parentY)
+{
+    LDEBUG << "layoutTable";
+    QTextTableData *td = static_cast<QTextTableData *>(data(table));
+    Q_ASSERT(td->sizeDirty);
+    const int rows = table->rows();
+    const int columns = table->columns();
+
+    const QTextTableFormat fmt = table->format();
+
+    td->childFrameMap.clear();
+    {
+        const QList<QTextFrame *> children = table->childFrames();
+        for (int i = 0; i < children.count(); ++i) {
+            QTextFrame *frame = children.at(i);
+            QTextTableCell cell = table->cellAt(frame->firstPosition());
+            td->childFrameMap.insertMulti(cell.row() + cell.column() * rows, frame);
+        }
+    }
+
+    QVector<QTextLength> columnWidthConstraints = fmt.columnWidthConstraints();
+    if (columnWidthConstraints.size() != columns)
+        columnWidthConstraints.resize(columns);
+    Q_ASSERT(columnWidthConstraints.count() == columns);
+
+    const QFixed cellSpacing = td->cellSpacing = QFixed::fromReal(scaleToDevice(fmt.cellSpacing()));
+    td->deviceScale = scaleToDevice(qreal(1));
+    td->cellPadding = QFixed::fromReal(scaleToDevice(fmt.cellPadding()));
+    const QFixed leftMargin = td->leftMargin + td->border + td->padding;
+    const QFixed rightMargin = td->rightMargin + td->border + td->padding;
+    const QFixed topMargin = td->topMargin + td->border + td->padding;
+
+    const QFixed absoluteTableY = parentY + td->position.y;
+
+    const QTextOption::WrapMode oldDefaultWrapMode = docPrivate->defaultTextOption.wrapMode();
+
+recalc_minmax_widths:
+
+    QFixed remainingWidth = td->contentsWidth;
+    // two (vertical) borders per cell per column
+    remainingWidth -= columns * 2 * td->border;
+    // inter-cell spacing
+    remainingWidth -= (columns - 1) * cellSpacing;
+    // cell spacing at the left and right hand side
+    remainingWidth -= 2 * cellSpacing;
+    // remember the width used to distribute to percentaged columns
+    const QFixed initialTotalWidth = remainingWidth;
+
+    td->widths.resize(columns);
+    td->widths.fill(0);
+
+    td->minWidths.resize(columns);
+    // start with a minimum width of 0. totally empty
+    // cells of default created tables are invisible otherwise
+    // and therefore hardly editable
+    td->minWidths.fill(1);
+
+    td->maxWidths.resize(columns);
+    td->maxWidths.fill(QFIXED_MAX);
+
+    // calculate minimum and maximum sizes of the columns
+    for (int i = 0; i < columns; ++i) {
+        for (int row = 0; row < rows; ++row) {
+            const QTextTableCell cell = table->cellAt(row, i);
+            const int cspan = cell.columnSpan();
+
+            if (cspan > 1 && i != cell.column())
+                continue;
+
+            const QTextFormat fmt = cell.format();
+            const QFixed leftPadding = td->leftPadding(fmt);
+            const QFixed rightPadding = td->rightPadding(fmt);
+            const QFixed widthPadding = leftPadding + rightPadding;
+
+            // to figure out the min and the max width lay out the cell at
+            // maximum width. otherwise the maxwidth calculation sometimes
+            // returns wrong values
+            QLayoutStruct layoutStruct = layoutCell(table, cell, QFIXED_MAX, layoutFrom,
+                                                    layoutTo, td, absoluteTableY,
+                                                    /*withPageBreaks =*/false);
+
+            // distribute the minimum width over all columns the cell spans
+            QFixed widthToDistribute = layoutStruct.minimumWidth + widthPadding;
+            for (int n = 0; n < cspan; ++n) {
+                const int col = i + n;
+                QFixed w = widthToDistribute / (cspan - n);
+                td->minWidths[col] = qMax(td->minWidths.at(col), w);
+                widthToDistribute -= td->minWidths.at(col);
+                if (widthToDistribute <= 0)
+                    break;
+            }
+
+            QFixed maxW = td->maxWidths.at(i);
+            if (layoutStruct.maximumWidth != QFIXED_MAX) {
+                if (maxW == QFIXED_MAX)
+                    maxW = layoutStruct.maximumWidth + widthPadding;
+                else
+                    maxW = qMax(maxW, layoutStruct.maximumWidth + widthPadding);
+            }
+            if (maxW == QFIXED_MAX)
+                continue;
+
+            widthToDistribute = maxW;
+            for (int n = 0; n < cspan; ++n) {
+                const int col = i + n;
+                QFixed w = widthToDistribute / (cspan - n);
+                td->maxWidths[col] = qMax(td->minWidths.at(col), w);
+                widthToDistribute -= td->maxWidths.at(col);
+                if (widthToDistribute <= 0)
+                    break;
+            }
+        }
+    }
+
+    // set fixed values, figure out total percentages used and number of
+    // variable length cells. Also assign the minimum width for variable columns.
+    QFixed totalPercentage;
+    int variableCols = 0;
+    QFixed totalMinWidth = 0;
+    for (int i = 0; i < columns; ++i) {
+        const QTextLength &length = columnWidthConstraints.at(i);
+        if (length.type() == QTextLength::FixedLength) {
+            td->minWidths[i] = td->widths[i] = qMax(scaleToDevice(QFixed::fromReal(length.rawValue())), td->minWidths.at(i));
+            remainingWidth -= td->widths.at(i);
+        } else if (length.type() == QTextLength::PercentageLength) {
+            totalPercentage += QFixed::fromReal(length.rawValue());
+        } else if (length.type() == QTextLength::VariableLength) {
+            variableCols++;
+
+            td->widths[i] = td->minWidths.at(i);
+            remainingWidth -= td->minWidths.at(i);
+        }
+        totalMinWidth += td->minWidths.at(i);
+    }
+
+    // set percentage values
+    {
+        const QFixed totalPercentagedWidth = initialTotalWidth * totalPercentage / 100;
+        QFixed remainingMinWidths = totalMinWidth;
+        for (int i = 0; i < columns; ++i) {
+            remainingMinWidths -= td->minWidths.at(i);
+            if (columnWidthConstraints.at(i).type() == QTextLength::PercentageLength) {
+                const QFixed allottedPercentage = QFixed::fromReal(columnWidthConstraints.at(i).rawValue());
+
+                const QFixed percentWidth = totalPercentagedWidth * allottedPercentage / totalPercentage;
+                if (percentWidth >= td->minWidths.at(i)) {
+                    td->widths[i] = qBound(td->minWidths.at(i), percentWidth, remainingWidth - remainingMinWidths);
+                } else {
+                    td->widths[i] = td->minWidths.at(i);
+                }
+                remainingWidth -= td->widths.at(i);
+            }
+        }
+    }
+
+    // for variable columns distribute the remaining space
+    if (variableCols > 0 && remainingWidth > 0) {
+        QVarLengthArray<int> columnsWithProperMaxSize;
+        for (int i = 0; i < columns; ++i)
+            if (columnWidthConstraints.at(i).type() == QTextLength::VariableLength
+                && td->maxWidths.at(i) != QFIXED_MAX)
+                columnsWithProperMaxSize.append(i);
+
+        QFixed lastRemainingWidth = remainingWidth;
+        while (remainingWidth > 0) {
+            for (int k = 0; k < columnsWithProperMaxSize.count(); ++k) {
+                const int col = columnsWithProperMaxSize[k];
+                const int colsLeft = columnsWithProperMaxSize.count() - k;
+                const QFixed w = qMin(td->maxWidths.at(col) - td->widths.at(col), remainingWidth / colsLeft);
+                td->widths[col] += w;
+                remainingWidth -= w;
+            }
+            if (remainingWidth == lastRemainingWidth)
+                break;
+            lastRemainingWidth = remainingWidth;
+        }
+
+        if (remainingWidth > 0
+            // don't unnecessarily grow variable length sized tables
+            && fmt.width().type() != QTextLength::VariableLength) {
+            const QFixed widthPerAnySizedCol = remainingWidth / variableCols;
+            for (int col = 0; col < columns; ++col) {
+                if (columnWidthConstraints.at(col).type() == QTextLength::VariableLength)
+                    td->widths[col] += widthPerAnySizedCol;
+            }
+        }
+    }
+
+    td->columnPositions.resize(columns);
+    td->columnPositions[0] = leftMargin /*includes table border*/ + cellSpacing + td->border;
+
+    for (int i = 1; i < columns; ++i)
+        td->columnPositions[i] = td->columnPositions.at(i-1) + td->widths.at(i-1) + 2 * td->border + cellSpacing;
+
+    // - margin to compensate the + margin in columnPositions[0]
+    const QFixed contentsWidth = td->columnPositions.last() + td->widths.last() + td->padding + td->border + cellSpacing - leftMargin;
+
+    // if the table is too big and causes an overflow re-do the layout with WrapAnywhere as wrap
+    // mode
+    if (docPrivate->defaultTextOption.wrapMode() == QTextOption::WrapAtWordBoundaryOrAnywhere
+        && contentsWidth > td->contentsWidth) {
+        docPrivate->defaultTextOption.setWrapMode(QTextOption::WrapAnywhere);
+        // go back to the top of the function
+        goto recalc_minmax_widths;
+    }
+
+    td->contentsWidth = contentsWidth;
+
+    docPrivate->defaultTextOption.setWrapMode(oldDefaultWrapMode);
+
+    td->heights.resize(rows);
+    td->heights.fill(0);
+
+    td->rowPositions.resize(rows);
+    td->rowPositions[0] = topMargin /*includes table border*/ + cellSpacing + td->border;
+
+    bool haveRowSpannedCells = false;
+
+    // need to keep track of cell heights for vertical alignment
+    QVector<QFixed> cellHeights;
+    cellHeights.reserve(rows * columns);
+
+    QFixed pageHeight = QFixed::fromReal(document->pageSize().height());
+    if (pageHeight <= 0)
+        pageHeight = QFIXED_MAX;
+
+    QVector<QFixed> heightToDistribute;
+    heightToDistribute.resize(columns);
+
+    td->headerHeight = 0;
+    const int headerRowCount = qMin(table->format().headerRowCount(), rows - 1);
+    const QFixed originalTopMargin = td->effectiveTopMargin;
+    bool hasDroppedTable = false;
+
+    // now that we have the column widths we can lay out all cells with the right width.
+    // spanning cells are only allowed to grow the last row spanned by the cell.
+    //
+    // ### this could be made faster by iterating over the cells array of QTextTable
+    for (int r = 0; r < rows; ++r) {
+        td->calcRowPosition(r);
+
+        const int tableStartPage = (absoluteTableY / pageHeight).truncate();
+        const int currentPage = ((td->rowPositions[r] + absoluteTableY) / pageHeight).truncate();
+        const QFixed pageBottom = (currentPage + 1) * pageHeight - td->effectiveBottomMargin - absoluteTableY - cellSpacing - td->border;
+        const QFixed pageTop = currentPage * pageHeight + td->effectiveTopMargin - absoluteTableY + cellSpacing + td->border;
+        const QFixed nextPageTop = pageTop + pageHeight;
+
+        if (td->rowPositions[r] > pageBottom)
+            td->rowPositions[r] = nextPageTop;
+        else if (td->rowPositions[r] < pageTop)
+            td->rowPositions[r] = pageTop;
+
+        bool dropRowToNextPage = true;
+        int cellCountBeforeRow = cellHeights.size();
+
+        // if we drop the row to the next page we need to subtract the drop
+        // distance from any row spanning cells
+        QFixed dropDistance = 0;
+
+relayout:
+        const int rowStartPage = ((td->rowPositions[r] + absoluteTableY) / pageHeight).truncate();
+        // if any of the header rows or the first non-header row start on the next page
+        // then the entire header should be dropped
+        if (r <= headerRowCount && rowStartPage > tableStartPage && !hasDroppedTable) {
+            td->rowPositions[0] = nextPageTop;
+            cellHeights.clear();
+            td->effectiveTopMargin = originalTopMargin;
+            hasDroppedTable = true;
+            r = -1;
+            continue;
+        }
+
+        int rowCellCount = 0;
+        for (int c = 0; c < columns; ++c) {
+            QTextTableCell cell = table->cellAt(r, c);
+            const int rspan = cell.rowSpan();
+            const int cspan = cell.columnSpan();
+
+            if (cspan > 1 && cell.column() != c)
+                continue;
+
+            if (rspan > 1) {
+                haveRowSpannedCells = true;
+
+                const int cellRow = cell.row();
+                if (cellRow != r) {
+                    // the last row gets all the remaining space
+                    if (cellRow + rspan - 1 == r)
+                        td->heights[r] = qMax(td->heights.at(r), heightToDistribute.at(c) - dropDistance);
+                    continue;
+                }
+            }
+
+            const QTextFormat fmt = cell.format();
+
+            const QFixed topPadding = td->topPadding(fmt);
+            const QFixed bottomPadding = td->bottomPadding(fmt);
+            const QFixed leftPadding = td->leftPadding(fmt);
+            const QFixed rightPadding = td->rightPadding(fmt);
+            const QFixed widthPadding = leftPadding + rightPadding;
+
+            ++rowCellCount;
+
+            const QFixed width = td->cellWidth(c, cspan) - widthPadding;
+            QLayoutStruct layoutStruct = layoutCell(table, cell, width,
+                                                    layoutFrom, layoutTo,
+                                                    td, absoluteTableY,
+                                                    /*withPageBreaks =*/true);
+
+            const QFixed height = layoutStruct.y + bottomPadding + topPadding;
+
+            if (rspan > 1)
+                heightToDistribute[c] = height + dropDistance;
+            else
+                td->heights[r] = qMax(td->heights.at(r), height);
+
+            cellHeights.append(layoutStruct.y);
+
+            QFixed childPos = td->rowPositions.at(r) + topPadding + flowPosition(cell.begin());
+            if (childPos < pageBottom)
+                dropRowToNextPage = false;
+        }
+
+        if (rowCellCount > 0 && dropRowToNextPage) {
+            dropDistance = nextPageTop - td->rowPositions[r];
+            td->rowPositions[r] = nextPageTop;
+            td->heights[r] = 0;
+            dropRowToNextPage = false;
+            cellHeights.resize(cellCountBeforeRow);
+            if (r > headerRowCount)
+                td->heights[r-1] = pageBottom - td->rowPositions[r-1];
+            goto relayout;
+        }
+
+        if (haveRowSpannedCells) {
+            const QFixed effectiveHeight = td->heights.at(r) + td->border + cellSpacing + td->border;
+            for (int c = 0; c < columns; ++c)
+                heightToDistribute[c] = qMax(heightToDistribute.at(c) - effectiveHeight - dropDistance, QFixed(0));
+        }
+
+        if (r == headerRowCount - 1) {
+            td->headerHeight = td->rowPositions[r] + td->heights[r] - td->rowPositions[0] + td->cellSpacing + 2 * td->border;
+            td->headerHeight -= td->headerHeight * (td->headerHeight / pageHeight).truncate();
+            td->effectiveTopMargin += td->headerHeight;
+        }
+    }
+
+    td->effectiveTopMargin = originalTopMargin;
+
+    // now that all cells have been properly laid out, we can compute the
+    // vertical offsets for vertical alignment
+    td->cellVerticalOffsets.resize(rows * columns);
+    int cellIndex = 0;
+    for (int r = 0; r < rows; ++r) {
+        for (int c = 0; c < columns; ++c) {
+            QTextTableCell cell = table->cellAt(r, c);
+            if (cell.row() != r || cell.column() != c)
+                continue;
+
+            const int rowSpan = cell.rowSpan();
+            const QFixed availableHeight = td->rowPositions.at(r + rowSpan - 1) + td->heights.at(r + rowSpan - 1) - td->rowPositions.at(r);
+
+            const QTextCharFormat cellFormat = cell.format();
+            const QFixed cellHeight = cellHeights.at(cellIndex++) + td->topPadding(cellFormat) + td->bottomPadding(cellFormat);
+
+            QFixed offset = 0;
+            switch (cellFormat.verticalAlignment()) {
+            case QTextCharFormat::AlignMiddle:
+                offset = (availableHeight - cellHeight) / 2;
+                break;
+            case QTextCharFormat::AlignBottom:
+                offset = availableHeight - cellHeight;
+                break;
+            default:
+                break;
+            };
+
+            for (int rd = 0; rd < cell.rowSpan(); ++rd) {
+                for (int cd = 0; cd < cell.columnSpan(); ++cd) {
+                    const int index = (c + cd) + (r + rd) * columns;
+                    td->cellVerticalOffsets[index] = offset;
+                }
+            }
+        }
+    }
+
+    td->minimumWidth = td->columnPositions.at(0);
+    for (int i = 0; i < columns; ++i) {
+        td->minimumWidth += td->minWidths.at(i) + 2 * td->border + cellSpacing;
+    }
+    td->minimumWidth += rightMargin - td->border;
+
+    td->maximumWidth = td->columnPositions.at(0);
+    for (int i = 0; i < columns; ++i)
+        if (td->maxWidths.at(i) != QFIXED_MAX)
+            td->maximumWidth += td->maxWidths.at(i) + 2 * td->border + cellSpacing;
+    td->maximumWidth += rightMargin - td->border;
+
+    td->updateTableSize();
+    td->sizeDirty = false;
+    return QRectF(); // invalid rect -> update everything
+}
+
+void QTextDocumentLayoutPrivate::positionFloat(QTextFrame *frame, QTextLine *currentLine)
+{
+    QTextFrameData *fd = data(frame);
+
+    QTextFrame *parent = frame->parentFrame();
+    Q_ASSERT(parent);
+    QTextFrameData *pd = data(parent);
+    Q_ASSERT(pd && pd->currentLayoutStruct);
+
+    QLayoutStruct *layoutStruct = pd->currentLayoutStruct;
+
+    if (!pd->floats.contains(frame))
+        pd->floats.append(frame);
+    fd->layoutDirty = true;
+    Q_ASSERT(!fd->sizeDirty);
+
+//     qDebug() << "positionFloat:" << frame << "width=" << fd->size.width;
+    QFixed y = layoutStruct->y;
+    if (currentLine) {
+        QFixed left, right;
+        floatMargins(y, layoutStruct, &left, &right);
+//         qDebug() << "have line: right=" << right << "left=" << left << "textWidth=" << currentLine->width();
+        if (right - left < QFixed::fromReal(currentLine->naturalTextWidth()) + fd->size.width) {
+            layoutStruct->pendingFloats.append(frame);
+//             qDebug() << "    adding to pending list";
+            return;
+        }
+    }
+
+    if (y + layoutStruct->frameY + fd->size.height > layoutStruct->pageBottom) {
+        layoutStruct->newPage();
+        y = layoutStruct->y;
+    }
+
+    y = findY(y, layoutStruct, fd->size.width);
+
+    QFixed left, right;
+    floatMargins(y, layoutStruct, &left, &right);
+
+    if (frame->frameFormat().position() == QTextFrameFormat::FloatLeft) {
+        fd->position.x = left;
+        fd->position.y = y;
+    } else {
+        fd->position.x = right - fd->size.width;
+        fd->position.y = y;
+    }
+
+    layoutStruct->minimumWidth = qMax(layoutStruct->minimumWidth, fd->minimumWidth);
+    layoutStruct->maximumWidth = qMin(layoutStruct->maximumWidth, fd->maximumWidth);
+
+//     qDebug()<< "float positioned at " << fd->position.x << fd->position.y;
+    fd->layoutDirty = false;
+}
+
+QRectF QTextDocumentLayoutPrivate::layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed parentY)
+{
+    LDEBUG << "layoutFrame (pre)";
+    Q_ASSERT(data(f)->sizeDirty);
+//     qDebug("layouting frame (%d--%d), parent=%p", f->firstPosition(), f->lastPosition(), f->parentFrame());
+
+    QTextFrameFormat fformat = f->frameFormat();
+
+    QTextFrame *parent = f->parentFrame();
+    const QTextFrameData *pd = parent ? data(parent) : 0;
+
+    const qreal maximumWidth = qMax(qreal(0), pd ? pd->contentsWidth.toReal() : document->pageSize().width());
+    QFixed width = QFixed::fromReal(fformat.width().value(maximumWidth));
+    if (fformat.width().type() == QTextLength::FixedLength)
+        width = scaleToDevice(width);
+
+    const QFixed maximumHeight = pd ? pd->contentsHeight : -1;
+    const QFixed height = (maximumHeight != -1 || fformat.height().type() != QTextLength::PercentageLength)
+                            ? QFixed::fromReal(fformat.height().value(maximumHeight.toReal()))
+                            : -1;
+
+    return layoutFrame(f, layoutFrom, layoutTo, width, height, parentY);
+}
+
+QRectF QTextDocumentLayoutPrivate::layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed frameWidth, QFixed frameHeight, QFixed parentY)
+{
+    LDEBUG << "layoutFrame from=" << layoutFrom << "to=" << layoutTo;
+    Q_ASSERT(data(f)->sizeDirty);
+//     qDebug("layouting frame (%d--%d), parent=%p", f->firstPosition(), f->lastPosition(), f->parentFrame());
+
+    QTextFrameData *fd = data(f);
+    QFixed newContentsWidth;
+
+    {
+        QTextFrameFormat fformat = f->frameFormat();
+        // set sizes of this frame from the format
+        fd->topMargin = QFixed::fromReal(fformat.topMargin());
+        fd->bottomMargin = QFixed::fromReal(fformat.bottomMargin());
+        fd->leftMargin = QFixed::fromReal(fformat.leftMargin());
+        fd->rightMargin = QFixed::fromReal(fformat.rightMargin());
+        fd->border = QFixed::fromReal(fformat.border());
+        fd->padding = QFixed::fromReal(fformat.padding());
+
+        QTextFrame *parent = f->parentFrame();
+        const QTextFrameData *pd = parent ? data(parent) : 0;
+
+        // accumulate top and bottom margins
+        if (parent) {
+            fd->effectiveTopMargin = pd->effectiveTopMargin + fd->topMargin + fd->border + fd->padding;
+            fd->effectiveBottomMargin = pd->effectiveBottomMargin + fd->topMargin + fd->border + fd->padding;
+
+            if (qobject_cast<QTextTable *>(parent)) {
+                const QTextTableData *td = static_cast<const QTextTableData *>(pd);
+                fd->effectiveTopMargin += td->cellSpacing + td->border + td->cellPadding;
+                fd->effectiveBottomMargin += td->cellSpacing + td->border + td->cellPadding;
+            }
+        } else {
+            fd->effectiveTopMargin = fd->topMargin + fd->border + fd->padding;
+            fd->effectiveBottomMargin = fd->bottomMargin + fd->border + fd->padding;
+        }
+
+        newContentsWidth = frameWidth - 2*(fd->border + fd->padding)
+                           - fd->leftMargin - fd->rightMargin;
+
+        if (frameHeight != -1) {
+            fd->contentsHeight = frameHeight - 2*(fd->border + fd->padding)
+                                 - fd->topMargin - fd->bottomMargin;
+        } else {
+            fd->contentsHeight = frameHeight;
+        }
+    }
+
+    if (isFrameFromInlineObject(f)) {
+        // never reached, handled in resizeInlineObject/positionFloat instead
+        return QRectF();
+    }
+
+    if (QTextTable *table = qobject_cast<QTextTable *>(f)) {
+        fd->contentsWidth = newContentsWidth;
+        return layoutTable(table, layoutFrom, layoutTo, parentY);
+    }
+
+    // set fd->contentsWidth temporarily, so that layoutFrame for the children
+    // picks the right width. We'll initialize it properly at the end of this
+    // function.
+    fd->contentsWidth = newContentsWidth;
+
+    QLayoutStruct layoutStruct;
+    layoutStruct.frame = f;
+    layoutStruct.x_left = fd->leftMargin + fd->border + fd->padding;
+    layoutStruct.x_right = layoutStruct.x_left + newContentsWidth;
+    layoutStruct.y = fd->topMargin + fd->border + fd->padding;
+    layoutStruct.frameY = parentY + fd->position.y;
+    layoutStruct.contentsWidth = 0;
+    layoutStruct.minimumWidth = 0;
+    layoutStruct.maximumWidth = QFIXED_MAX;
+    layoutStruct.fullLayout = fd->oldContentsWidth != newContentsWidth;
+    layoutStruct.updateRect = QRectF(QPointF(0, 0), QSizeF(qreal(INT_MAX), qreal(INT_MAX)));
+    LDEBUG << "layoutStruct: x_left" << layoutStruct.x_left << "x_right" << layoutStruct.x_right
+           << "fullLayout" << layoutStruct.fullLayout;
+    fd->oldContentsWidth = newContentsWidth;
+
+    layoutStruct.pageHeight = QFixed::fromReal(document->pageSize().height());
+    if (layoutStruct.pageHeight < 0)
+        layoutStruct.pageHeight = QFIXED_MAX;
+
+    const int currentPage = layoutStruct.pageHeight == 0 ? 0 : (layoutStruct.frameY / layoutStruct.pageHeight).truncate();
+    layoutStruct.pageTopMargin = fd->effectiveTopMargin;
+    layoutStruct.pageBottomMargin = fd->effectiveBottomMargin;
+    layoutStruct.pageBottom = (currentPage + 1) * layoutStruct.pageHeight - layoutStruct.pageBottomMargin;
+
+    if (!f->parentFrame())
+        idealWidth = 0; // reset
+
+    QTextFrame::Iterator it = f->begin();
+    layoutFlow(it, &layoutStruct, layoutFrom, layoutTo);
+
+    QFixed maxChildFrameWidth = 0;
+    QList<QTextFrame *> children = f->childFrames();
+    for (int i = 0; i < children.size(); ++i) {
+        QTextFrame *c = children.at(i);
+        QTextFrameData *cd = data(c);
+        maxChildFrameWidth = qMax(maxChildFrameWidth, cd->size.width);
+    }
+
+    const QFixed marginWidth = 2*(fd->border + fd->padding) + fd->leftMargin + fd->rightMargin;
+    if (!f->parentFrame()) {
+        idealWidth = qMax(maxChildFrameWidth, layoutStruct.contentsWidth).toReal();
+        idealWidth += marginWidth.toReal();
+    }
+
+    QFixed actualWidth = qMax(newContentsWidth, qMax(maxChildFrameWidth, layoutStruct.contentsWidth));
+    fd->contentsWidth = actualWidth;
+    if (newContentsWidth <= 0) { // nowrap layout?
+        fd->contentsWidth = newContentsWidth;
+    }
+
+    fd->minimumWidth = layoutStruct.minimumWidth;
+    fd->maximumWidth = layoutStruct.maximumWidth;
+
+    fd->size.height = fd->contentsHeight == -1
+                 ? layoutStruct.y + fd->border + fd->padding + fd->bottomMargin
+                 : fd->contentsHeight + 2*(fd->border + fd->padding) + fd->topMargin + fd->bottomMargin;
+    fd->size.width = actualWidth + marginWidth;
+    fd->sizeDirty = false;
+    if (layoutStruct.updateRectForFloats.isValid())
+        layoutStruct.updateRect |= layoutStruct.updateRectForFloats;
+    return layoutStruct.updateRect;
+}
+
+void QTextDocumentLayoutPrivate::layoutFlow(QTextFrame::Iterator it, QLayoutStruct *layoutStruct,
+                                            int layoutFrom, int layoutTo, QFixed width)
+{
+    LDEBUG << "layoutFlow from=" << layoutFrom << "to=" << layoutTo;
+    QTextFrameData *fd = data(layoutStruct->frame);
+
+    fd->currentLayoutStruct = layoutStruct;
+
+    QTextFrame::Iterator previousIt;
+
+    const bool inRootFrame = (it.parentFrame() == document->rootFrame());
+    if (inRootFrame) {
+        bool redoCheckPoints = layoutStruct->fullLayout || checkPoints.isEmpty();
+
+        if (!redoCheckPoints) {
+            QVector<QCheckPoint>::Iterator checkPoint = qLowerBound(checkPoints.begin(), checkPoints.end(), layoutFrom);
+            if (checkPoint != checkPoints.end()) {
+                if (checkPoint != checkPoints.begin())
+                    --checkPoint;
+
+                layoutStruct->y = checkPoint->y;
+                layoutStruct->frameY = checkPoint->frameY;
+                layoutStruct->minimumWidth = checkPoint->minimumWidth;
+                layoutStruct->maximumWidth = checkPoint->maximumWidth;
+                layoutStruct->contentsWidth = checkPoint->contentsWidth;
+
+                if (layoutStruct->pageHeight > 0) {
+                    int page = layoutStruct->currentPage();
+                    layoutStruct->pageBottom = (page + 1) * layoutStruct->pageHeight - layoutStruct->pageBottomMargin;
+                }
+
+                it = frameIteratorForTextPosition(checkPoint->positionInFrame);
+                checkPoints.resize(checkPoint - checkPoints.begin() + 1);
+
+                if (checkPoint != checkPoints.begin()) {
+                    previousIt = it;
+                    --previousIt;
+                }
+            } else {
+                redoCheckPoints = true;
+            }
+        }
+
+        if (redoCheckPoints) {
+            checkPoints.clear();
+            QCheckPoint cp;
+            cp.y = layoutStruct->y;
+            cp.frameY = layoutStruct->frameY;
+            cp.positionInFrame = 0;
+            cp.minimumWidth = layoutStruct->minimumWidth;
+            cp.maximumWidth = layoutStruct->maximumWidth;
+            cp.contentsWidth = layoutStruct->contentsWidth;
+            checkPoints.append(cp);
+        }
+    }
+
+    QTextBlockFormat previousBlockFormat = previousIt.currentBlock().blockFormat();
+
+    QFixed maximumBlockWidth = 0;
+    while (!it.atEnd()) {
+        QTextFrame *c = it.currentFrame();
+
+        int docPos;
+        if (it.currentFrame())
+            docPos = it.currentFrame()->firstPosition();
+        else
+            docPos = it.currentBlock().position();
+
+        if (inRootFrame) {
+            if (qAbs(layoutStruct->y - checkPoints.last().y) > 2000) {
+                QFixed left, right;
+                floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+                if (left == layoutStruct->x_left && right == layoutStruct->x_right) {
+                    QCheckPoint p;
+                    p.y = layoutStruct->y;
+                    p.frameY = layoutStruct->frameY;
+                    p.positionInFrame = docPos;
+                    p.minimumWidth = layoutStruct->minimumWidth;
+                    p.maximumWidth = layoutStruct->maximumWidth;
+                    p.contentsWidth = layoutStruct->contentsWidth;
+                    checkPoints.append(p);
+
+                    if (currentLazyLayoutPosition != -1
+                        && docPos > currentLazyLayoutPosition + lazyLayoutStepSize)
+                        break;
+
+                }
+            }
+        }
+
+        if (c) {
+            // position child frame
+            QTextFrameData *cd = data(c);
+
+            QTextFrameFormat fformat = c->frameFormat();
+
+            if (fformat.position() == QTextFrameFormat::InFlow) {
+                if (fformat.pageBreakPolicy() & QTextFormat::PageBreak_AlwaysBefore)
+                    layoutStruct->newPage();
+
+                QFixed left, right;
+                floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+                left = qMax(left, layoutStruct->x_left);
+                right = qMin(right, layoutStruct->x_right);
+
+                if (right - left < cd->size.width) {
+                    layoutStruct->y = findY(layoutStruct->y, layoutStruct, cd->size.width);
+                    floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+                }
+
+                QFixedPoint pos(left, layoutStruct->y);
+
+                Qt::Alignment align = Qt::AlignLeft;
+
+                QTextTable *table = qobject_cast<QTextTable *>(c);
+
+                if (table)
+                    align = table->format().alignment() & Qt::AlignHorizontal_Mask;
+
+                // detect whether we have any alignment in the document that disallows optimizations,
+                // such as not laying out the document again in a textedit with wrapping disabled.
+                if (inRootFrame && !(align & Qt::AlignLeft))
+                    contentHasAlignment = true;
+
+                cd->position = pos;
+
+                if (document->pageSize().height() > 0.0f)
+                    cd->sizeDirty = true;
+
+                if (cd->sizeDirty) {
+                    if (width != 0)
+                        layoutFrame(c, layoutFrom, layoutTo, width, -1, layoutStruct->frameY);
+                    else
+                        layoutFrame(c, layoutFrom, layoutTo, layoutStruct->frameY);
+
+                    QFixed absoluteChildPos = table ? pos.y + static_cast<QTextTableData *>(data(table))->rowPositions.at(0) : pos.y + firstChildPos(c);
+                    absoluteChildPos += layoutStruct->frameY;
+
+                    // drop entire frame to next page if first child of frame is on next page
+                    if (absoluteChildPos > layoutStruct->pageBottom) {
+                        layoutStruct->newPage();
+                        pos.y = layoutStruct->y;
+
+                        cd->position = pos;
+                        cd->sizeDirty = true;
+
+                        if (width != 0)
+                            layoutFrame(c, layoutFrom, layoutTo, width, -1, layoutStruct->frameY);
+                        else
+                            layoutFrame(c, layoutFrom, layoutTo, layoutStruct->frameY);
+                    }
+                }
+
+                // align only if there is space for alignment
+                if (right - left > cd->size.width) {
+                    if (align & Qt::AlignRight)
+                        pos.x += layoutStruct->x_right - cd->size.width;
+                    else if (align & Qt::AlignHCenter)
+                        pos.x += (layoutStruct->x_right - cd->size.width) / 2;
+                }
+
+                cd->position = pos;
+
+                layoutStruct->y += cd->size.height;
+                const int page = layoutStruct->currentPage();
+                layoutStruct->pageBottom = (page + 1) * layoutStruct->pageHeight - layoutStruct->pageBottomMargin;
+
+                cd->layoutDirty = false;
+
+                if (c->frameFormat().pageBreakPolicy() & QTextFormat::PageBreak_AlwaysAfter)
+                    layoutStruct->newPage();
+            } else {
+                QRectF oldFrameRect(cd->position.toPointF(), cd->size.toSizeF());
+                QRectF updateRect;
+
+                if (cd->sizeDirty)
+                    updateRect = layoutFrame(c, layoutFrom, layoutTo);
+
+                positionFloat(c);
+
+                QRectF frameRect(cd->position.toPointF(), cd->size.toSizeF());
+
+                if (frameRect == oldFrameRect && updateRect.isValid())
+                    updateRect.translate(cd->position.toPointF());
+                else
+                    updateRect = frameRect;
+
+                layoutStruct->addUpdateRectForFloat(updateRect);
+                if (oldFrameRect.isValid())
+                    layoutStruct->addUpdateRectForFloat(oldFrameRect);
+            }
+
+            layoutStruct->minimumWidth = qMax(layoutStruct->minimumWidth, cd->minimumWidth);
+            layoutStruct->maximumWidth = qMin(layoutStruct->maximumWidth, cd->maximumWidth);
+
+            previousIt = it;
+            ++it;
+        } else {
+            QTextFrame::Iterator lastIt;
+            if (!previousIt.atEnd())
+                lastIt = previousIt;
+            previousIt = it;
+            QTextBlock block = it.currentBlock();
+            ++it;
+
+            const QTextBlockFormat blockFormat = block.blockFormat();
+
+            if (blockFormat.pageBreakPolicy() & QTextFormat::PageBreak_AlwaysBefore)
+                layoutStruct->newPage();
+
+            const QFixed origY = layoutStruct->y;
+            const QFixed origPageBottom = layoutStruct->pageBottom;
+            const QFixed origMaximumWidth = layoutStruct->maximumWidth;
+            layoutStruct->maximumWidth = 0;
+
+            const QTextBlockFormat *previousBlockFormatPtr = 0;
+            if (lastIt.currentBlock().isValid())
+                previousBlockFormatPtr = &previousBlockFormat;
+
+            // layout and position child block
+            layoutBlock(block, docPos, blockFormat, layoutStruct, layoutFrom, layoutTo, previousBlockFormatPtr);
+
+            // detect whether we have any alignment in the document that disallows optimizations,
+            // such as not laying out the document again in a textedit with wrapping disabled.
+            if (inRootFrame && !(block.layout()->textOption().alignment() & Qt::AlignLeft))
+                contentHasAlignment = true;
+
+            // if the block right before a table is empty 'hide' it by
+            // positioning it into the table border
+            if (isEmptyBlockBeforeTable(block, blockFormat, it)) {
+                const QTextBlock lastBlock = lastIt.currentBlock();
+                const qreal lastBlockBottomMargin = lastBlock.isValid() ? lastBlock.blockFormat().bottomMargin() : 0.0f;
+                layoutStruct->y = origY + QFixed::fromReal(qMax(lastBlockBottomMargin, block.blockFormat().topMargin()));
+                layoutStruct->pageBottom = origPageBottom;
+            } else {
+                // if the block right after a table is empty then 'hide' it, too
+                if (isEmptyBlockAfterTable(block, lastIt.currentFrame())) {
+                    QTextTableData *td = static_cast<QTextTableData *>(data(lastIt.currentFrame()));
+                    QTextLayout *layout = block.layout();
+
+                    QPointF pos((td->position.x + td->size.width).toReal(),
+                                (td->position.y + td->size.height).toReal() - layout->boundingRect().height());
+
+                    layout->setPosition(pos);
+                    layoutStruct->y = origY;
+                    layoutStruct->pageBottom = origPageBottom;
+                }
+
+                // if the block right after a table starts with a line separator, shift it up by one line
+                if (isLineSeparatorBlockAfterTable(block, lastIt.currentFrame())) {
+                    QTextTableData *td = static_cast<QTextTableData *>(data(lastIt.currentFrame()));
+                    QTextLayout *layout = block.layout();
+
+                    QFixed height = QFixed::fromReal(layout->lineAt(0).height());
+
+                    if (layoutStruct->pageBottom == origPageBottom) {
+                        layoutStruct->y -= height;
+                        layout->setPosition(layout->position() - QPointF(0, height.toReal()));
+                    } else {
+                        // relayout block to correctly handle page breaks
+                        layoutStruct->y = origY - height;
+                        layoutStruct->pageBottom = origPageBottom;
+                        layoutBlock(block, docPos, blockFormat, layoutStruct, layoutFrom, layoutTo, previousBlockFormatPtr);
+                    }
+
+                    QPointF linePos((td->position.x + td->size.width).toReal(),
+                                    (td->position.y + td->size.height - height).toReal());
+
+                    layout->lineAt(0).setPosition(linePos - layout->position());
+                }
+
+                if (blockFormat.pageBreakPolicy() & QTextFormat::PageBreak_AlwaysAfter)
+                    layoutStruct->newPage();
+            }
+
+            maximumBlockWidth = qMax(maximumBlockWidth, layoutStruct->maximumWidth);
+            layoutStruct->maximumWidth = origMaximumWidth;
+            previousBlockFormat = blockFormat;
+        }
+    }
+    if (layoutStruct->maximumWidth == QFIXED_MAX && maximumBlockWidth > 0)
+        layoutStruct->maximumWidth = maximumBlockWidth;
+    else
+        layoutStruct->maximumWidth = qMax(layoutStruct->maximumWidth, maximumBlockWidth);
+
+    // a float at the bottom of a frame may make it taller, hence the qMax() for layoutStruct->y.
+    // we don't need to do it for tables though because floats in tables are per table
+    // and not per cell and layoutCell already takes care of doing the same as we do here
+    if (!qobject_cast<QTextTable *>(layoutStruct->frame)) {
+        QList<QTextFrame *> children = layoutStruct->frame->childFrames();
+        for (int i = 0; i < children.count(); ++i) {
+            QTextFrameData *fd = data(children.at(i));
+            if (!fd->layoutDirty && children.at(i)->frameFormat().position() != QTextFrameFormat::InFlow)
+                layoutStruct->y = qMax(layoutStruct->y, fd->position.y + fd->size.height);
+        }
+    }
+
+    if (inRootFrame) {
+        // we assume that any float is aligned in a way that disallows the optimizations that rely
+        // on unaligned content.
+        if (!fd->floats.isEmpty())
+            contentHasAlignment = true;
+
+        if (it.atEnd()) {
+            //qDebug() << "layout done!";
+            currentLazyLayoutPosition = -1;
+            QCheckPoint cp;
+            cp.y = layoutStruct->y;
+            cp.positionInFrame = docPrivate->length();
+            cp.minimumWidth = layoutStruct->minimumWidth;
+            cp.maximumWidth = layoutStruct->maximumWidth;
+            cp.contentsWidth = layoutStruct->contentsWidth;
+            checkPoints.append(cp);
+            checkPoints.reserve(checkPoints.size());
+        } else {
+            currentLazyLayoutPosition = checkPoints.last().positionInFrame;
+            // #######
+            //checkPoints.last().positionInFrame = q->document()->docHandle()->length();
+        }
+    }
+
+
+    fd->currentLayoutStruct = 0;
+}
+
+void QTextDocumentLayoutPrivate::layoutBlock(const QTextBlock &bl, int blockPosition, const QTextBlockFormat &blockFormat,
+                                             QLayoutStruct *layoutStruct, int layoutFrom, int layoutTo, const QTextBlockFormat *previousBlockFormat)
+{
+    Q_Q(QTextDocumentLayout);
+
+    QTextLayout *tl = bl.layout();
+    const int blockLength = bl.length();
+
+    LDEBUG << "layoutBlock from=" << layoutFrom << "to=" << layoutTo;
+
+//    qDebug() << "layoutBlock; width" << layoutStruct->x_right - layoutStruct->x_left << "(maxWidth is btw" << tl->maximumWidth() << ")";
+
+    if (previousBlockFormat) {
+        qreal margin = qMax(blockFormat.topMargin(), previousBlockFormat->bottomMargin());
+        if (margin > 0 && q->paintDevice()) {
+            margin *= qreal(q->paintDevice()->logicalDpiY()) / qreal(qt_defaultDpi());
+        }
+        layoutStruct->y += QFixed::fromReal(margin);
+    }
+
+    //QTextFrameData *fd = data(layoutStruct->frame);
+
+    Qt::LayoutDirection dir = docPrivate->defaultTextOption.textDirection();
+    if (blockFormat.hasProperty(QTextFormat::LayoutDirection))
+        dir = blockFormat.layoutDirection();
+
+    QFixed extraMargin;
+    if (docPrivate->defaultTextOption.flags() & QTextOption::AddSpaceForLineAndParagraphSeparators) {
+        QFontMetricsF fm(bl.charFormat().font());
+        extraMargin = QFixed::fromReal(fm.width(QChar(QChar(0x21B5))));
+    }
+
+    const QFixed indent = this->blockIndent(blockFormat);
+    const QFixed totalLeftMargin = QFixed::fromReal(blockFormat.leftMargin()) + (dir == Qt::RightToLeft ? extraMargin : indent);
+    const QFixed totalRightMargin = QFixed::fromReal(blockFormat.rightMargin()) + (dir == Qt::RightToLeft ? indent : extraMargin);
+
+    const QPointF oldPosition = tl->position();
+    tl->setPosition(QPointF(layoutStruct->x_left.toReal(), layoutStruct->y.toReal()));
+
+    if (layoutStruct->fullLayout
+        || (blockPosition + blockLength > layoutFrom && blockPosition <= layoutTo)
+        // force relayout if we cross a page boundary
+        || (layoutStruct->pageHeight != QFIXED_MAX && layoutStruct->absoluteY() + QFixed::fromReal(tl->boundingRect().height()) > layoutStruct->pageBottom)) {
+
+        LDEBUG << " do layout";
+        QTextOption option = docPrivate->defaultTextOption;
+        option.setTextDirection(dir);
+        option.setTabs( blockFormat.tabPositions() );
+
+        Qt::Alignment align = docPrivate->defaultTextOption.alignment();
+        if (blockFormat.hasProperty(QTextFormat::BlockAlignment))
+            align = blockFormat.alignment();
+        option.setAlignment(QStyle::visualAlignment(dir, align)); // for paragraph that are RTL, alignment is auto-reversed;
+
+        if (blockFormat.nonBreakableLines() || document->pageSize().width() < 0) {
+            option.setWrapMode(QTextOption::ManualWrap);
+        }
+
+        tl->setTextOption(option);
+
+        const bool haveWordOrAnyWrapMode = (option.wrapMode() == QTextOption::WrapAtWordBoundaryOrAnywhere);
+
+//         qDebug() << "    layouting block at" << bl.position();
+        const QFixed cy = layoutStruct->y;
+        const QFixed l = layoutStruct->x_left  + totalLeftMargin;
+        const QFixed r = layoutStruct->x_right - totalRightMargin;
+
+        tl->beginLayout();
+        bool firstLine = true;
+        while (1) {
+            QTextLine line = tl->createLine();
+            if (!line.isValid())
+                break;
+
+            QFixed left, right;
+            floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+            left = qMax(left, l);
+            right = qMin(right, r);
+            QFixed text_indent;
+            if (firstLine) {
+                text_indent = QFixed::fromReal(blockFormat.textIndent());
+                if (dir == Qt::LeftToRight)
+                    left += text_indent;
+                else
+                    right -= text_indent;
+                firstLine = false;
+            }
+//         qDebug() << "layout line y=" << currentYPos << "left=" << left << "right=" <<right;
+
+            if (fixedColumnWidth != -1)
+                line.setNumColumns(fixedColumnWidth, (right - left).toReal());
+            else
+                line.setLineWidth((right - left).toReal());
+
+//        qDebug() << "layoutBlock; layouting line with width" << right - left << "->textWidth" << line.textWidth();
+            floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+            left = qMax(left, l);
+            right = qMin(right, r);
+            if (dir == Qt::LeftToRight)
+                left += text_indent;
+            else
+                right -= text_indent;
+
+            if (fixedColumnWidth == -1 && QFixed::fromReal(line.naturalTextWidth()) > right-left) {
+                // float has been added in the meantime, redo
+                layoutStruct->pendingFloats.clear();
+
+                if (haveWordOrAnyWrapMode) {
+                    option.setWrapMode(QTextOption::WrapAnywhere);
+                    tl->setTextOption(option);
+                }
+
+                line.setLineWidth((right-left).toReal());
+                if (QFixed::fromReal(line.naturalTextWidth()) > right-left) {
+                    layoutStruct->pendingFloats.clear();
+                    // lines min width more than what we have
+                    layoutStruct->y = findY(layoutStruct->y, layoutStruct, QFixed::fromReal(line.naturalTextWidth()));
+                    floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+                    left = qMax(left, l);
+                    right = qMin(right, r);
+                    if (dir == Qt::LeftToRight)
+                        left += text_indent;
+                    else
+                        right -= text_indent;
+                    line.setLineWidth(qMax<qreal>(line.naturalTextWidth(), (right-left).toReal()));
+                }
+
+                if (haveWordOrAnyWrapMode) {
+                    option.setWrapMode(QTextOption::WordWrap);
+                    tl->setTextOption(option);
+                }
+            }
+
+            QFixed lineHeight = QFixed::fromReal(line.height());
+            if (layoutStruct->pageHeight > 0 && layoutStruct->absoluteY() + lineHeight > layoutStruct->pageBottom) {
+                layoutStruct->newPage();
+
+                floatMargins(layoutStruct->y, layoutStruct, &left, &right);
+                left = qMax(left, l);
+                right = qMin(right, r);
+                if (dir == Qt::LeftToRight)
+                    left += text_indent;
+                else
+                    right -= text_indent;
+            }
+
+            line.setPosition(QPointF((left - layoutStruct->x_left).toReal(), (layoutStruct->y - cy).toReal()));
+            layoutStruct->y += lineHeight;
+            layoutStruct->contentsWidth
+                = qMax<QFixed>(layoutStruct->contentsWidth, QFixed::fromReal(line.x() + line.naturalTextWidth()) + totalRightMargin);
+
+            // position floats
+            for (int i = 0; i < layoutStruct->pendingFloats.size(); ++i) {
+                QTextFrame *f = layoutStruct->pendingFloats.at(i);
+                positionFloat(f);
+            }
+            layoutStruct->pendingFloats.clear();
+        }
+        tl->endLayout();
+    } else {
+        const int cnt = tl->lineCount();
+        for (int i = 0; i < cnt; ++i) {
+            LDEBUG << "going to move text line" << i;
+            QTextLine line = tl->lineAt(i);
+            layoutStruct->contentsWidth
+                = qMax(layoutStruct->contentsWidth, QFixed::fromReal(line.x() + tl->lineAt(i).naturalTextWidth()) + totalRightMargin);
+            const QFixed lineHeight = QFixed::fromReal(line.height());
+            if (layoutStruct->pageHeight != QFIXED_MAX) {
+                if (layoutStruct->absoluteY() + lineHeight > layoutStruct->pageBottom)
+                    layoutStruct->newPage();
+                line.setPosition(QPointF(line.position().x(), layoutStruct->y.toReal() - tl->position().y()));
+            }
+            layoutStruct->y += lineHeight;
+        }
+        if (layoutStruct->updateRect.isValid()
+            && blockLength > 1) {
+            if (layoutFrom >= blockPosition + blockLength) {
+                // if our height didn't change and the change in the document is
+                // in one of the later paragraphs, then we don't need to repaint
+                // this one
+                layoutStruct->updateRect.setTop(qMax(layoutStruct->updateRect.top(), layoutStruct->y.toReal()));
+            } else if (layoutTo < blockPosition) {
+                if (oldPosition == tl->position())
+                    // if the change in the document happened earlier in the document
+                    // and our position did /not/ change because none of the earlier paragraphs
+                    // or frames changed their height, then we don't need to repaint
+                    // this one
+                    layoutStruct->updateRect.setBottom(qMin(layoutStruct->updateRect.bottom(), tl->position().y()));
+                else
+                    layoutStruct->updateRect.setBottom(qreal(INT_MAX)); // reset
+            }
+        }
+    }
+
+    // ### doesn't take floats into account. would need to do it per line. but how to retrieve then? (Simon)
+    const QFixed margins = totalLeftMargin + totalRightMargin;
+    layoutStruct->minimumWidth = qMax(layoutStruct->minimumWidth, QFixed::fromReal(tl->minimumWidth()) + margins);
+
+    const QFixed maxW = QFixed::fromReal(tl->maximumWidth()) + margins;
+
+    if (maxW > 0) {
+        if (layoutStruct->maximumWidth == QFIXED_MAX)
+            layoutStruct->maximumWidth = maxW;
+        else
+            layoutStruct->maximumWidth = qMax(layoutStruct->maximumWidth, maxW);
+    }
+}
+
+void QTextDocumentLayoutPrivate::floatMargins(const QFixed &y, const QLayoutStruct *layoutStruct,
+                                              QFixed *left, QFixed *right) const
+{
+//     qDebug() << "floatMargins y=" << y;
+    *left = layoutStruct->x_left;
+    *right = layoutStruct->x_right;
+    QTextFrameData *lfd = data(layoutStruct->frame);
+    for (int i = 0; i < lfd->floats.size(); ++i) {
+        QTextFrameData *fd = data(lfd->floats.at(i));
+        if (!fd->layoutDirty) {
+            if (fd->position.y <= y && fd->position.y + fd->size.height > y) {
+//                 qDebug() << "adjusting with float" << f << fd->position.x()<< fd->size.width();
+                if (lfd->floats.at(i)->frameFormat().position() == QTextFrameFormat::FloatLeft)
+                    *left = qMax(*left, fd->position.x + fd->size.width);
+                else
+                    *right = qMin(*right, fd->position.x);
+            }
+        }
+    }
+//     qDebug() << "floatMargins: left="<<*left<<"right="<<*right<<"y="<<y;
+}
+
+QFixed QTextDocumentLayoutPrivate::findY(QFixed yFrom, const QLayoutStruct *layoutStruct, QFixed requiredWidth) const
+{
+    QFixed right, left;
+    requiredWidth = qMin(requiredWidth, layoutStruct->x_right - layoutStruct->x_left);
+
+//     qDebug() << "findY:" << yFrom;
+    while (1) {
+        floatMargins(yFrom, layoutStruct, &left, &right);
+//         qDebug() << "    yFrom=" << yFrom<<"right=" << right << "left=" << left << "requiredWidth=" << requiredWidth;
+        if (right-left >= requiredWidth)
+            break;
+
+        // move float down until we find enough space
+        QFixed newY = QFIXED_MAX;
+        QTextFrameData *lfd = data(layoutStruct->frame);
+        for (int i = 0; i < lfd->floats.size(); ++i) {
+            QTextFrameData *fd = data(lfd->floats.at(i));
+            if (!fd->layoutDirty) {
+                if (fd->position.y <= yFrom && fd->position.y + fd->size.height > yFrom)
+                    newY = qMin(newY, fd->position.y + fd->size.height);
+            }
+        }
+        if (newY == QFIXED_MAX)
+            break;
+        yFrom = newY;
+    }
+    return yFrom;
+}
+
+QTextDocumentLayout::QTextDocumentLayout(QTextDocument *doc)
+    : QAbstractTextDocumentLayout(*new QTextDocumentLayoutPrivate, doc)
+{
+    registerHandler(QTextFormat::ImageObject, new QTextImageHandler(this));
+}
+
+
+void QTextDocumentLayout::draw(QPainter *painter, const PaintContext &context)
+{
+    Q_D(QTextDocumentLayout);
+    QTextFrame *frame = d->document->rootFrame();
+    QTextFrameData *fd = data(frame);
+
+    if(fd->sizeDirty)
+        return;
+
+    if (context.clip.isValid()) {
+        d->ensureLayouted(QFixed::fromReal(context.clip.bottom()));
+    } else {
+        d->ensureLayoutFinished();
+    }
+
+    QFixed width = fd->size.width;
+    if (d->document->pageSize().width() == 0 && d->viewportRect.isValid()) {
+        // we're in NoWrap mode, meaning the frame should expand to the viewport
+        // so that backgrounds are drawn correctly
+        fd->size.width = qMax(width, QFixed::fromReal(d->viewportRect.right()));
+    }
+
+    // Make sure we conform to the root frames bounds when drawing.
+    d->clipRect = QRectF(fd->position.toPointF(), fd->size.toSizeF()).adjusted(fd->leftMargin.toReal(), 0, -fd->rightMargin.toReal(), 0);
+    d->drawFrame(QPointF(), painter, context, frame);
+    fd->size.width = width;
+}
+
+void QTextDocumentLayout::setViewport(const QRectF &viewport)
+{
+    Q_D(QTextDocumentLayout);
+    d->viewportRect = viewport;
+}
+
+static void markFrames(QTextFrame *current, int from, int oldLength, int length)
+{
+    int end = qMax(oldLength, length) + from;
+
+    if (current->firstPosition() >= end || current->lastPosition() < from)
+        return;
+
+    QTextFrameData *fd = data(current);
+    for (int i = 0; i < fd->floats.size(); ++i) {
+        QTextFrame *f = fd->floats[i];
+        if (!f) {
+            // float got removed in editing operation
+            fd->floats.removeAt(i);
+            --i;
+        }
+    }
+
+    fd->layoutDirty = true;
+    fd->sizeDirty = true;
+
+//     qDebug("    marking frame (%d--%d) as dirty", current->firstPosition(), current->lastPosition());
+    QList<QTextFrame *> children = current->childFrames();
+    for (int i = 0; i < children.size(); ++i)
+        markFrames(children.at(i), from, oldLength, length);
+}
+
+void QTextDocumentLayout::documentChanged(int from, int oldLength, int length)
+{
+    Q_D(QTextDocumentLayout);
+
+    QTextBlock blockIt = document()->findBlock(from);
+    QTextBlock endIt = document()->findBlock(qMax(0, from + length - 1));
+    if (endIt.isValid())
+        endIt = endIt.next();
+     for (; blockIt.isValid() && blockIt != endIt; blockIt = blockIt.next())
+         blockIt.clearLayout();
+
+    if (d->docPrivate->pageSize.isNull())
+        return;
+
+    QRectF updateRect;
+
+    d->lazyLayoutStepSize = 1000;
+    d->sizeChangedTimer.stop();
+    d->insideDocumentChange = true;
+
+    const int documentLength = d->docPrivate->length();
+    const bool fullLayout = (oldLength == 0 && length == documentLength);
+    const bool smallChange = documentLength > 0
+                             && (qMax(length, oldLength) * 100 / documentLength) < 5;
+
+    // don't show incremental layout progress (avoid scroll bar flicker)
+    // if we see only a small change in the document and we're either starting
+    // a layout run or we're already in progress for that and we haven't seen
+    // any bigger change previously (showLayoutProgress already false)
+    if (smallChange
+        && (d->currentLazyLayoutPosition == -1 || d->showLayoutProgress == false))
+        d->showLayoutProgress = false;
+    else
+        d->showLayoutProgress = true;
+
+    if (fullLayout) {
+        d->contentHasAlignment = false;
+        d->currentLazyLayoutPosition = 0;
+        d->checkPoints.clear();
+        d->layoutStep();
+    } else {
+        d->ensureLayoutedByPosition(from);
+        updateRect = doLayout(from, oldLength, length);
+    }
+
+    if (!d->layoutTimer.isActive() && d->currentLazyLayoutPosition != -1)
+        d->layoutTimer.start(10, this);
+
+    d->insideDocumentChange = false;
+
+    if (d->showLayoutProgress) {
+        const QSizeF newSize = dynamicDocumentSize();
+        if (newSize != d->lastReportedSize) {
+            d->lastReportedSize = newSize;
+            emit documentSizeChanged(newSize);
+        }
+    }
+
+    if (!updateRect.isValid()) {
+        // don't use the frame size, it might have shrunken
+        updateRect = QRectF(QPointF(0, 0), QSizeF(qreal(INT_MAX), qreal(INT_MAX)));
+    }
+
+    emit update(updateRect);
+}
+
+QRectF QTextDocumentLayout::doLayout(int from, int oldLength, int length)
+{
+    Q_D(QTextDocumentLayout);
+
+//     qDebug("documentChange: from=%d, oldLength=%d, length=%d", from, oldLength, length);
+
+    // mark all frames between f_start and f_end as dirty
+    markFrames(d->docPrivate->rootFrame(), from, oldLength, length);
+
+    QRectF updateRect;
+
+    QTextFrame *root = d->docPrivate->rootFrame();
+    if(data(root)->sizeDirty)
+        updateRect = d->layoutFrame(root, from, from + length);
+    data(root)->layoutDirty = false;
+
+    if (d->currentLazyLayoutPosition == -1)
+        layoutFinished();
+    else if (d->showLayoutProgress)
+        d->sizeChangedTimer.start(0, this);
+
+    return updateRect;
+}
+
+int QTextDocumentLayout::hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const
+{
+    Q_D(const QTextDocumentLayout);
+    d->ensureLayouted(QFixed::fromReal(point.y()));
+    QTextFrame *f = d->docPrivate->rootFrame();
+    int position = 0;
+    QTextLayout *l = 0;
+    QFixedPoint pointf;
+    pointf.x = QFixed::fromReal(point.x());
+    pointf.y = QFixed::fromReal(point.y());
+    QTextDocumentLayoutPrivate::HitPoint p = d->hitTest(f, pointf, &position, &l, accuracy);
+    if (accuracy == Qt::ExactHit && p < QTextDocumentLayoutPrivate::PointExact)
+        return -1;
+
+    // ensure we stay within document bounds
+    int lastPos = f->lastPosition();
+    if (l && !l->preeditAreaText().isEmpty())
+        lastPos += l->preeditAreaText().length();
+    if (position > lastPos)
+        position = lastPos;
+    else if (position < 0)
+        position = 0;
+
+    return position;
+}
+
+void QTextDocumentLayout::resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format)
+{
+    Q_D(QTextDocumentLayout);
+    QTextCharFormat f = format.toCharFormat();
+    Q_ASSERT(f.isValid());
+    QTextObjectHandler handler = d->handlers.value(f.objectType());
+    if (!handler.component)
+        return;
+
+    QSizeF intrinsic = handler.iface->intrinsicSize(d->document, posInDocument, format);
+
+    QTextFrameFormat::Position pos = QTextFrameFormat::InFlow;
+    QTextFrame *frame = qobject_cast<QTextFrame *>(d->document->objectForFormat(f));
+    if (frame) {
+        pos = frame->frameFormat().position();
+        QTextFrameData *fd = data(frame);
+        fd->sizeDirty = false;
+        fd->size = QFixedSize::fromSizeF(intrinsic);
+        fd->minimumWidth = fd->maximumWidth = fd->size.width;
+    }
+
+    QSizeF inlineSize = (pos == QTextFrameFormat::InFlow ? intrinsic : QSizeF(0, 0));
+    item.setWidth(inlineSize.width());
+    if (f.verticalAlignment() == QTextCharFormat::AlignMiddle) {
+        item.setDescent(inlineSize.height() / 2);
+        item.setAscent(inlineSize.height() / 2 - 1);
+    } else {
+        item.setDescent(0);
+        item.setAscent(inlineSize.height() - 1);
+    }
+}
+
+void QTextDocumentLayout::positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format)
+{
+    Q_D(QTextDocumentLayout);
+    Q_UNUSED(posInDocument);
+    if (item.width() != 0)
+        // inline
+        return;
+
+    QTextCharFormat f = format.toCharFormat();
+    Q_ASSERT(f.isValid());
+    QTextObjectHandler handler = d->handlers.value(f.objectType());
+    if (!handler.component)
+        return;
+
+    QTextFrame *frame = qobject_cast<QTextFrame *>(d->document->objectForFormat(f));
+    if (!frame)
+        return;
+
+    QTextBlock b = d->document->findBlock(frame->firstPosition());
+    QTextLine line;
+    if (b.position() <= frame->firstPosition() && b.position() + b.length() > frame->lastPosition())
+        line = b.layout()->lineAt(b.layout()->lineCount()-1);
+//     qDebug() << "layoutObject: line.isValid" << line.isValid() << b.position() << b.length() <<
+//         frame->firstPosition() << frame->lastPosition();
+    d->positionFloat(frame, line.isValid() ? &line : 0);
+}
+
+void QTextDocumentLayout::drawInlineObject(QPainter *p, const QRectF &rect, QTextInlineObject item,
+                                           int posInDocument, const QTextFormat &format)
+{
+    Q_D(QTextDocumentLayout);
+    QTextCharFormat f = format.toCharFormat();
+    Q_ASSERT(f.isValid());
+    QTextFrame *frame = qobject_cast<QTextFrame *>(d->document->objectForFormat(f));
+    if (frame && frame->frameFormat().position() != QTextFrameFormat::InFlow)
+        return; // don't draw floating frames from inline objects here but in drawFlow instead
+
+//    qDebug() << "drawObject at" << r;
+    QAbstractTextDocumentLayout::drawInlineObject(p, rect, item, posInDocument, format);
+}
+
+int QTextDocumentLayout::dynamicPageCount() const
+{
+    Q_D(const QTextDocumentLayout);
+    const QSizeF pgSize = d->document->pageSize();
+    if (pgSize.height() < 0)
+        return 1;
+    return qCeil(dynamicDocumentSize().height() / pgSize.height());
+}
+
+QSizeF QTextDocumentLayout::dynamicDocumentSize() const
+{
+    Q_D(const QTextDocumentLayout);
+    return data(d->docPrivate->rootFrame())->size.toSizeF();
+}
+
+int QTextDocumentLayout::pageCount() const
+{
+    Q_D(const QTextDocumentLayout);
+    d->ensureLayoutFinished();
+    return dynamicPageCount();
+}
+
+QSizeF QTextDocumentLayout::documentSize() const
+{
+    Q_D(const QTextDocumentLayout);
+    d->ensureLayoutFinished();
+    return dynamicDocumentSize();
+}
+
+void QTextDocumentLayoutPrivate::ensureLayouted(QFixed y) const
+{
+    Q_Q(const QTextDocumentLayout);
+    if (currentLazyLayoutPosition == -1)
+        return;
+    const QSizeF oldSize = q->dynamicDocumentSize();
+
+    if (checkPoints.isEmpty())
+        layoutStep();
+
+    while (currentLazyLayoutPosition != -1
+           && checkPoints.last().y < y)
+        layoutStep();
+}
+
+void QTextDocumentLayoutPrivate::ensureLayoutedByPosition(int position) const
+{
+    if (currentLazyLayoutPosition == -1)
+        return;
+    if (position < currentLazyLayoutPosition)
+        return;
+    while (currentLazyLayoutPosition != -1
+           && currentLazyLayoutPosition < position) {
+        const_cast<QTextDocumentLayout *>(q_func())->doLayout(currentLazyLayoutPosition, 0, INT_MAX - currentLazyLayoutPosition);
+    }
+}
+
+void QTextDocumentLayoutPrivate::layoutStep() const
+{
+    ensureLayoutedByPosition(currentLazyLayoutPosition + lazyLayoutStepSize);
+    lazyLayoutStepSize = qMin(200000, lazyLayoutStepSize * 2);
+}
+
+void QTextDocumentLayout::setCursorWidth(int width)
+{
+    Q_D(QTextDocumentLayout);
+    d->cursorWidth = width;
+}
+
+int QTextDocumentLayout::cursorWidth() const
+{
+    Q_D(const QTextDocumentLayout);
+    return d->cursorWidth;
+}
+
+void QTextDocumentLayout::setFixedColumnWidth(int width)
+{
+    Q_D(QTextDocumentLayout);
+    d->fixedColumnWidth = width;
+}
+
+QRectF QTextDocumentLayout::frameBoundingRect(QTextFrame *frame) const
+{
+    Q_D(const QTextDocumentLayout);
+    if (d->docPrivate->pageSize.isNull())
+        return QRectF();
+    d->ensureLayoutFinished();
+    return d->frameBoundingRectInternal(frame);
+}
+
+QRectF QTextDocumentLayoutPrivate::frameBoundingRectInternal(QTextFrame *frame) const
+{
+    QPointF pos;
+    const int framePos = frame->firstPosition();
+    QTextFrame *f = frame;
+    while (f) {
+        QTextFrameData *fd = data(f);
+        pos += fd->position.toPointF();
+
+        if (QTextTable *table = qobject_cast<QTextTable *>(f)) {
+            QTextTableCell cell = table->cellAt(framePos);
+            if (cell.isValid())
+                pos += static_cast<QTextTableData *>(fd)->cellPosition(cell).toPointF();
+        }
+
+        f = f->parentFrame();
+    }
+    return QRectF(pos, data(frame)->size.toSizeF());
+}
+
+QRectF QTextDocumentLayout::blockBoundingRect(const QTextBlock &block) const
+{
+    Q_D(const QTextDocumentLayout);
+    if (d->docPrivate->pageSize.isNull())
+        return QRectF();
+    d->ensureLayoutedByPosition(block.position() + block.length());
+    QTextFrame *frame = d->document->frameAt(block.position());
+    QPointF offset;
+    const int blockPos = block.position();
+
+    while (frame) {
+        QTextFrameData *fd = data(frame);
+        offset += fd->position.toPointF();
+
+        if (QTextTable *table = qobject_cast<QTextTable *>(frame)) {
+            QTextTableCell cell = table->cellAt(blockPos);
+            if (cell.isValid())
+                offset += static_cast<QTextTableData *>(fd)->cellPosition(cell).toPointF();
+        }
+
+        frame = frame->parentFrame();
+    }
+
+    const QTextLayout *layout = block.layout();
+    QRectF rect = layout->boundingRect();
+    rect.moveTopLeft(layout->position() + offset);
+    return rect;
+}
+
+int QTextDocumentLayout::layoutStatus() const
+{
+    Q_D(const QTextDocumentLayout);
+    int pos = d->currentLazyLayoutPosition;
+    if (pos == -1)
+        return 100;
+    return pos * 100 / d->document->docHandle()->length();
+}
+
+void QTextDocumentLayout::timerEvent(QTimerEvent *e)
+{
+    Q_D(QTextDocumentLayout);
+    if (e->timerId() == d->layoutTimer.timerId()) {
+        if (d->currentLazyLayoutPosition != -1)
+            d->layoutStep();
+    } else if (e->timerId() == d->sizeChangedTimer.timerId()) {
+        d->lastReportedSize = dynamicDocumentSize();
+        emit documentSizeChanged(d->lastReportedSize);
+        d->sizeChangedTimer.stop();
+
+        if (d->currentLazyLayoutPosition == -1) {
+            const int newCount = dynamicPageCount();
+            if (newCount != d->lastPageCount) {
+                d->lastPageCount = newCount;
+                emit pageCountChanged(newCount);
+            }
+        }
+    } else {
+        QAbstractTextDocumentLayout::timerEvent(e);
+    }
+}
+
+void QTextDocumentLayout::layoutFinished()
+{
+    Q_D(QTextDocumentLayout);
+    d->layoutTimer.stop();
+    if (!d->insideDocumentChange)
+        d->sizeChangedTimer.start(0, this);
+    // reset
+    d->showLayoutProgress = true;
+}
+
+void QTextDocumentLayout::ensureLayouted(qreal y)
+{
+    d_func()->ensureLayouted(QFixed::fromReal(y));
+}
+
+qreal QTextDocumentLayout::idealWidth() const
+{
+    Q_D(const QTextDocumentLayout);
+    d->ensureLayoutFinished();
+    return d->idealWidth;
+}
+
+bool QTextDocumentLayout::contentHasAlignment() const
+{
+    Q_D(const QTextDocumentLayout);
+    return d->contentHasAlignment;
+}
+
+qreal QTextDocumentLayoutPrivate::scaleToDevice(qreal value) const
+{
+    QPaintDevice *dev = q_func()->paintDevice();
+    if (!dev)
+        return value;
+    return value * dev->logicalDpiY() / qreal(qt_defaultDpi());
+}
+
+QFixed QTextDocumentLayoutPrivate::scaleToDevice(QFixed value) const
+{
+    QPaintDevice *dev = q_func()->paintDevice();
+    if (!dev)
+        return value;
+    return value * QFixed(dev->logicalDpiY()) / QFixed(qt_defaultDpi());
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qtextdocumentlayout_p.cpp"