FCL/sf/mw/qt: comparison src/gui/itemviews/qtableview.cpp

equal deleted inserted replaced

--1:000000000000
+:1918ee327afb
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "qtableview.h"
+#ifndef QT_NO_TABLEVIEW
+#include <qheaderview.h>
+#include <qitemdelegate.h>
+#include <qapplication.h>
+#include <qpainter.h>
+#include <qstyle.h>
+#include <qsize.h>
+#include <qevent.h>
+#include <qbitarray.h>
+#include <qscrollbar.h>
+#include <qabstractbutton.h>
+#include <private/qtableview_p.h>
+#ifndef QT_NO_ACCESSIBILITY
+#include <qaccessible.h>
+#endif
+QT_BEGIN_NAMESPACE
+/** \internal
+Add a span to the collection. the collection takes the ownership.
+*/
+void QSpanCollection::addSpan(QSpanCollection::Span *span)
+{
+spans.append(span);
+Index::iterator it_y = index.lowerBound(-span->top());
+if (it_y == index.end() || it_y.key() != -span->top()) {
+//there is no spans that starts with the row in the index, so create a sublist for it.
+SubIndex sub_index;
+if (it_y != index.end()) {
+//the previouslist is the list of spans that sarts _before_ the row of the span.
+// and which may intersect this row.
+const SubIndex previousList = it_y.value();
+foreach(Span *s, previousList) {
+//If a subspans intersect the row, we need to split it into subspans
+if(s->bottom() >= span->top())
+sub_index.insert(-s->left(), s);
+}
+}
+it_y = index.insert(-span->top(), sub_index);
+//we will insert span to *it_y in the later loop
+}
+//insert the span as supspan in all the lists that intesects the span
+while(-it_y.key() <= span->bottom()) {
+(*it_y).insert(-span->left(), span);
+if(it_y == index.begin())
+break;
+--it_y;
+}
+}
+/** \internal
+* Has to be called after the height and width of a span is changed.
+*
+* old_height is the height before the change
+*
+* if the size of the span is now 0x0 the span will be deleted.
+*/
+void QSpanCollection::updateSpan(QSpanCollection::Span *span, int old_height)
+{
+if (old_height < span->height()) {
+//add the span as subspan in all the lists that intersect the new covered columns
+Index::iterator it_y = index.lowerBound(-(span->top() + old_height - 1));
+Q_ASSERT(it_y != index.end()); //it_y must exist since the span is in the list
+while (-it_y.key() <= span->bottom()) {
+(*it_y).insert(-span->left(), span);
+if(it_y == index.begin())
+break;
+--it_y;
+}
+} else if (old_height > span->height()) {
+//remove the span from all the subspans lists that intersect the columns not covered anymore
+Index::iterator it_y = index.lowerBound(-span->bottom());
+Q_ASSERT(it_y != index.end()); //it_y must exist since the span is in the list
+while (-it_y.key() <= span->top() + old_height -1) {
+if(-it_y.key() != span->bottom()) {
+(*it_y).remove(-span->left());
+if (it_y->isEmpty()) {
+it_y = index.erase(it_y) - 1;
+}
+}
+if(it_y == index.begin())
+break;
+--it_y;
+}
+}
+if (span->width() == 0 && span->height() == 0) {
+spans.removeOne(span);
+delete span;
+}
+}
+/** \internal
+* \return a spans that spans over cell x,y  (column,row)  or 0 if there is none.
+*/
+QSpanCollection::Span *QSpanCollection::spanAt(int x, int y) const
+{
+Index::const_iterator it_y = index.lowerBound(-y);
+if (it_y == index.end())
+return 0;
+SubIndex::const_iterator it_x = (*it_y).lowerBound(-x);
+if (it_x == (*it_y).end())
+return 0;
+Span *span = *it_x;
+if (span->right() >= x && span->bottom() >= y)
+return span;
+return 0;
+}
+/** \internal
+* remove and deletes all spans inside the collection
+*/
+void QSpanCollection::clear()
+{
+qDeleteAll(spans);
+index.clear();
+spans.clear();
+}
+/** \internal
+* return a list to all the spans that spans over cells in the given rectangle
+*/
+QList<QSpanCollection::Span *> QSpanCollection::spansInRect(int x, int y, int w, int h) const
+{
+QSet<Span *> list;
+Index::const_iterator it_y = index.lowerBound(-y);
+if(it_y == index.end())
+--it_y;
+while(-it_y.key() <= y + h) {
+SubIndex::const_iterator it_x = (*it_y).lowerBound(-x);
+if (it_x == (*it_y).end())
+--it_x;
+while(-it_x.key() <= x + w) {
+Span *s = *it_x;
+if (s->bottom() >= y && s->right() >= x)
+list << s;
+if (it_x == (*it_y).begin())
+break;
+--it_x;
+}
+if(it_y == index.begin())
+break;
+--it_y;
+}
+return list.toList();
+}
+#undef DEBUG_SPAN_UPDATE
+#ifdef DEBUG_SPAN_UPDATE
+QDebug operator<<(QDebug str, const QSpanCollection::Span &span)
+{
+str << "(" << span.top() << "," << span.left() << "," << span.bottom() << "," << span.right() << ")";
+return str;
+}
+#endif
+/** \internal
+* Updates the span collection after row insertion.
+*/
+void QSpanCollection::updateInsertedRows(int start, int end)
+{
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << Q_FUNC_INFO;
+qDebug() << start << end;
+qDebug() << index;
+#endif
+if (spans.isEmpty())
+return;
+int delta = end - start + 1;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("Before");
+#endif
+for (SpanList::iterator it = spans.begin(); it != spans.end(); ++it) {
+Span *span = *it;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << span << *span;
+#endif
+if (span->m_bottom < start)
+continue;
+if (span->m_top >= start)
+span->m_top += delta;
+span->m_bottom += delta;
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("After");
+foreach (QSpanCollection::Span *span, spans)
+qDebug() << span << *span;
+#endif
+for (Index::iterator it_y = index.begin(); it_y != index.end(); ) {
+int y = -it_y.key();
+if (y < start) {
+++it_y;
+continue;
+}
+index.insert(-y - delta, it_y.value());
+it_y = index.erase(it_y);
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << index;
+#endif
+}
+/** \internal
+* Updates the span collection after column insertion.
+*/
+void QSpanCollection::updateInsertedColumns(int start, int end)
+{
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << Q_FUNC_INFO;
+qDebug() << start << end;
+qDebug() << index;
+#endif
+if (spans.isEmpty())
+return;
+int delta = end - start + 1;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("Before");
+#endif
+for (SpanList::iterator it = spans.begin(); it != spans.end(); ++it) {
+Span *span = *it;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << span << *span;
+#endif
+if (span->m_right < start)
+continue;
+if (span->m_left >= start)
+span->m_left += delta;
+span->m_right += delta;
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("After");
+foreach (QSpanCollection::Span *span, spans)
+qDebug() << span << *span;
+#endif
+for (Index::iterator it_y = index.begin(); it_y != index.end(); ++it_y) {
+SubIndex &subindex = it_y.value();
+for (SubIndex::iterator it = subindex.begin(); it != subindex.end(); ) {
+int x = -it.key();
+if (x < start) {
+++it;
+continue;
+}
+subindex.insert(-x - delta, it.value());
+it = subindex.erase(it);
+}
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << index;
+#endif
+}
+/** \internal
+* Cleans a subindex from to be deleted spans. The update argument is used
+* to move the spans inside the subindex, in case their anchor changed.
+* \return true if no span in this subindex starts at y, and should thus be deleted.
+*/
+bool QSpanCollection::cleanSpanSubIndex(QSpanCollection::SubIndex &subindex, int y, bool update)
+{
+if (subindex.isEmpty())
+return true;
+bool should_be_deleted = true;
+SubIndex::iterator it = subindex.end();
+do {
+--it;
+int x = -it.key();
+Span *span = it.value();
+if (span->will_be_deleted) {
+it = subindex.erase(it);
+continue;
+}
+if (update && span->m_left != x) {
+subindex.insert(-span->m_left, span);
+it = subindex.erase(it);
+}
+if (should_be_deleted && span->m_top == y)
+should_be_deleted = false;
+} while (it != subindex.begin());
+return should_be_deleted;
+}
+/** \internal
+* Updates the span collection after row removal.
+*/
+void QSpanCollection::updateRemovedRows(int start, int end)
+{
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << Q_FUNC_INFO;
+qDebug() << start << end;
+qDebug() << index;
+#endif
+if (spans.isEmpty())
+return;
+SpanList spansToBeDeleted;
+int delta = end - start + 1;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("Before");
+#endif
+for (SpanList::iterator it = spans.begin(); it != spans.end(); ) {
+Span *span = *it;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << span << *span;
+#endif
+if (span->m_bottom < start) {
+++it;
+continue;
+}
+if (span->m_top < start) {
+if (span->m_bottom <= end)
+span->m_bottom = start - 1;
+else
+span->m_bottom -= delta;
+} else {
+if (span->m_bottom > end) {
+if (span->m_top <= end)
+span->m_top = start;
+else
+span->m_top -= delta;
+span->m_bottom -= delta;
+} else {
+span->will_be_deleted = true;
+}
+}
+if (span->m_top == span->m_bottom && span->m_left == span->m_right)
+span->will_be_deleted = true;
+if (span->will_be_deleted) {
+spansToBeDeleted.append(span);
+it = spans.erase(it);
+} else {
+++it;
+}
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("After");
+foreach (QSpanCollection::Span *span, spans)
+qDebug() << span << *span;
+#endif
+if (spans.isEmpty()) {
+qDeleteAll(spansToBeDeleted);
+index.clear();
+return;
+}
+Index::iterator it_y = index.end();
+do {
+--it_y;
+int y = -it_y.key();
+SubIndex &subindex = it_y.value();
+if (y < start) {
+if (cleanSpanSubIndex(subindex, y))
+it_y = index.erase(it_y);
+} else if (y >= start && y <= end) {
+bool span_at_start = false;
+SubIndex spansToBeMoved;
+for (SubIndex::iterator it = subindex.begin(); it != subindex.end(); ++it) {
+Span *span = it.value();
+if (span->will_be_deleted)
+continue;
+if (!span_at_start && span->m_top == start)
+span_at_start = true;
+spansToBeMoved.insert(it.key(), span);
+}
+if (y == start && span_at_start)
+subindex.clear();
+else
+it_y = index.erase(it_y);
+if (span_at_start) {
+Index::iterator it_start;
+if (y == start)
+it_start = it_y;
+else {
+it_start = index.find(-start);
+if (it_start == index.end())
+it_start = index.insert(-start, SubIndex());
+}
+SubIndex &start_subindex = it_start.value();
+for (SubIndex::iterator it = spansToBeMoved.begin(); it != spansToBeMoved.end(); ++it)
+start_subindex.insert(it.key(), it.value());
+}
+} else {
+if (y == end + 1) {
+Index::iterator it_top = index.find(-y + delta);
+if (it_top == index.end())
+it_top = index.insert(-y + delta, SubIndex());
+for (SubIndex::iterator it = subindex.begin(); it != subindex.end(); ) {
+Span *span = it.value();
+if (!span->will_be_deleted)
+it_top.value().insert(it.key(), span);
+++it;
+}
+} else {
+index.insert(-y + delta, subindex);
+}
+it_y = index.erase(it_y);
+}
+} while (it_y != index.begin());
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << index;
+qDebug("Deleted");
+foreach (QSpanCollection::Span *span, spansToBeDeleted)
+qDebug() << span << *span;
+#endif
+qDeleteAll(spansToBeDeleted);
+}
+/** \internal
+* Updates the span collection after column removal.
+*/
+void QSpanCollection::updateRemovedColumns(int start, int end)
+{
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << Q_FUNC_INFO;
+qDebug() << start << end;
+qDebug() << index;
+#endif
+if (spans.isEmpty())
+return;
+SpanList toBeDeleted;
+int delta = end - start + 1;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("Before");
+#endif
+for (SpanList::iterator it = spans.begin(); it != spans.end(); ) {
+Span *span = *it;
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << span << *span;
+#endif
+if (span->m_right < start) {
+++it;
+continue;
+}
+if (span->m_left < start) {
+if (span->m_right <= end)
+span->m_right = start - 1;
+else
+span->m_right -= delta;
+} else {
+if (span->m_right > end) {
+if (span->m_left <= end)
+span->m_left = start;
+else
+span->m_left -= delta;
+span->m_right -= delta;
+} else {
+span->will_be_deleted = true;
+}
+}
+if (span->m_top == span->m_bottom && span->m_left == span->m_right)
+span->will_be_deleted = true;
+if (span->will_be_deleted) {
+toBeDeleted.append(span);
+it = spans.erase(it);
+} else {
+++it;
+}
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug("After");
+foreach (QSpanCollection::Span *span, spans)
+qDebug() << span << *span;
+#endif
+if (spans.isEmpty()) {
+qDeleteAll(toBeDeleted);
+index.clear();
+return;
+}
+for (Index::iterator it_y = index.begin(); it_y != index.end(); ) {
+int y = -it_y.key();
+if (cleanSpanSubIndex(it_y.value(), y, true))
+it_y = index.erase(it_y);
+else
+++it_y;
+}
+#ifdef DEBUG_SPAN_UPDATE
+qDebug() << index;
+qDebug("Deleted");
+foreach (QSpanCollection::Span *span, toBeDeleted)
+qDebug() << span << *span;
+#endif
+qDeleteAll(toBeDeleted);
+}
+class QTableCornerButton : public QAbstractButton
+{
+Q_OBJECT
+public:
+QTableCornerButton(QWidget *parent) : QAbstractButton(parent) {}
+void paintEvent(QPaintEvent*) {
+QStyleOptionHeader opt;
+opt.init(this);
+QStyle::State state = QStyle::State_None;
+if (isEnabled())
+state |= QStyle::State_Enabled;
+if (isActiveWindow())
+state |= QStyle::State_Active;
+if (isDown())
+state |= QStyle::State_Sunken;
+opt.state = state;
+opt.rect = rect();
+opt.position = QStyleOptionHeader::OnlyOneSection;
+QPainter painter(this);
+style()->drawControl(QStyle::CE_Header, &opt, &painter, this);
+}
+};
+void QTableViewPrivate::init()
+{
+Q_Q(QTableView);
+q->setEditTriggers(editTriggers|QAbstractItemView::AnyKeyPressed);
+QHeaderView *vertical = new QHeaderView(Qt::Vertical, q);
+vertical->setClickable(true);
+vertical->setHighlightSections(true);
+q->setVerticalHeader(vertical);
+QHeaderView *horizontal = new QHeaderView(Qt::Horizontal, q);
+horizontal->setClickable(true);
+horizontal->setHighlightSections(true);
+q->setHorizontalHeader(horizontal);
+tabKeyNavigation = true;
+cornerWidget = new QTableCornerButton(q);
+cornerWidget->setFocusPolicy(Qt::NoFocus);
+QObject::connect(cornerWidget, SIGNAL(clicked()), q, SLOT(selectAll()));
+}
+/*!
+\internal
+Trims away indices that are hidden in the treeview due to hidden horizontal or vertical sections.
+*/
+void QTableViewPrivate::trimHiddenSelections(QItemSelectionRange *range) const
+{
+Q_ASSERT(range && range->isValid());
+int top = range->top();
+int left = range->left();
+int bottom = range->bottom();
+int right = range->right();
+while (bottom >= top && verticalHeader->isSectionHidden(bottom))
+--bottom;
+while (right >= left && horizontalHeader->isSectionHidden(right))
+--right;
+if (top > bottom || left > right) { // everything is hidden
+*range = QItemSelectionRange();
+return;
+}
+while (verticalHeader->isSectionHidden(top) && top <= bottom)
+++top;
+while (horizontalHeader->isSectionHidden(left) && left <= right)
+++left;
+if (top > bottom || left > right) { // everything is hidden
+*range = QItemSelectionRange();
+return;
+}
+QModelIndex bottomRight = model->index(bottom, right, range->parent());
+QModelIndex topLeft = model->index(top, left, range->parent());
+*range = QItemSelectionRange(topLeft, bottomRight);
+}
+/*!
+\internal
+Sets the span for the cell at (\a row, \a column).
+*/
+void QTableViewPrivate::setSpan(int row, int column, int rowSpan, int columnSpan)
+{
+if (row < 0 || column < 0 || rowSpan <= 0 || columnSpan <= 0) {
+qWarning() << "QTableView::setSpan: invalid span given: (" << row << ',' << column << ',' << rowSpan << ',' << columnSpan << ')';
+return;
+}
+QSpanCollection::Span *sp = spans.spanAt(column, row);
+if (sp) {
+if (sp->top() != row || sp->left() != column) {
+qWarning() << "QTableView::setSpan: span cannot overlap";
+return;
+}
+if (rowSpan == 1 && columnSpan == 1) {
+rowSpan = columnSpan = 0;
+}
+const int old_height = sp->height();
+sp->m_bottom = row + rowSpan - 1;
+sp->m_right = column + columnSpan - 1;
+spans.updateSpan(sp, old_height);
+return;
+} else if (rowSpan == 1 && columnSpan == 1) {
+qWarning() << "QTableView::setSpan: single cell span won't be added";
+return;
+}
+sp = new QSpanCollection::Span(row, column, rowSpan, columnSpan);
+spans.addSpan(sp);
+}
+/*!
+\internal
+Gets the span information for the cell at (\a row, \a column).
+*/
+QSpanCollection::Span QTableViewPrivate::span(int row, int column) const
+{
+QSpanCollection::Span *sp = spans.spanAt(column, row);
+if (sp)
+return *sp;
+return QSpanCollection::Span(row, column, 1, 1);
+}
+/*!
+\internal
+Returns the logical index of the last section that's part of the span.
+*/
+int QTableViewPrivate::sectionSpanEndLogical(const QHeaderView *header, int logical, int span) const
+{
+int visual = header->visualIndex(logical);
+for (int i = 1; i < span; ) {
+if (++visual >= header->count())
+break;
+logical = header->logicalIndex(visual);
+++i;
+}
+return logical;
+}
+/*!
+\internal
+Returns the size of the span starting at logical index \a logical
+and spanning \a span sections.
+*/
+int QTableViewPrivate::sectionSpanSize(const QHeaderView *header, int logical, int span) const
+{
+int endLogical = sectionSpanEndLogical(header, logical, span);
+return header->sectionPosition(endLogical)
+- header->sectionPosition(logical)
++ header->sectionSize(endLogical);
+}
+/*!
+\internal
+Returns true if the section at logical index \a logical is part of the span
+starting at logical index \a spanLogical and spanning \a span sections;
+otherwise, returns false.
+*/
+bool QTableViewPrivate::spanContainsSection(const QHeaderView *header, int logical, int spanLogical, int span) const
+{
+if (logical == spanLogical)
+return true; // it's the start of the span
+int visual = header->visualIndex(spanLogical);
+for (int i = 1; i < span; ) {
+if (++visual >= header->count())
+break;
+spanLogical = header->logicalIndex(visual);
+if (logical == spanLogical)
+return true;
+++i;
+}
+return false;
+}
+/*!
+\internal
+Returns the visual rect for the given \a span.
+*/
+QRect QTableViewPrivate::visualSpanRect(const QSpanCollection::Span &span) const
+{
+Q_Q(const QTableView);
+// vertical
+int row = span.top();
+int rowp = verticalHeader->sectionViewportPosition(row);
+int rowh = rowSpanHeight(row, span.height());
+// horizontal
+int column = span.left();
+int colw = columnSpanWidth(column, span.width());
+if (q->isRightToLeft())
+column = span.right();
+int colp = horizontalHeader->sectionViewportPosition(column);
+const int i = showGrid ? 1 : 0;
+if (q->isRightToLeft())
+return QRect(colp + i, rowp, colw - i, rowh - i);
+return QRect(colp, rowp, colw - i, rowh - i);
+}
+/*!
+\internal
+Draws the spanning cells within rect \a area, and clips them off as
+preparation for the main drawing loop.
+\a drawn is a QBitArray of visualRowCountxvisualCoulumnCount which say if particular cell has been drawn
+*/
+void QTableViewPrivate::drawAndClipSpans(const QRegion &area, QPainter *painter,
+const QStyleOptionViewItemV4 &option, QBitArray *drawn,
+int firstVisualRow, int lastVisualRow, int firstVisualColumn, int lastVisualColumn)
+{
+bool alternateBase = false;
+QRegion region = viewport->rect();
+QList<QSpanCollection::Span *> visibleSpans;
+bool sectionMoved = verticalHeader->sectionsMoved() || horizontalHeader->sectionsMoved();
+if (!sectionMoved) {
+visibleSpans = spans.spansInRect(logicalColumn(firstVisualColumn), logicalRow(firstVisualRow),
+lastVisualColumn - firstVisualColumn + 1, lastVisualRow - firstVisualRow + 1);
+} else {
+QSet<QSpanCollection::Span *> set;
+for(int x = firstVisualColumn; x <= lastVisualColumn; x++)
+for(int y = firstVisualRow; y <= lastVisualRow; y++)
+set.insert(spans.spanAt(x,y));
+set.remove(0);
+visibleSpans = set.toList();
+}
+foreach (QSpanCollection::Span *span, visibleSpans) {
+int row = span->top();
+int col = span->left();
+QModelIndex index = model->index(row, col, root);
+if (!index.isValid())
+continue;
+QRect rect = visualSpanRect(*span);
+rect.translate(scrollDelayOffset);
+if (!area.intersects(rect))
+continue;
+QStyleOptionViewItemV4 opt = option;
+opt.rect = rect;
+alternateBase = alternatingColors && (span->top() & 1);
+if (alternateBase)
+opt.features |= QStyleOptionViewItemV2::Alternate;
+else
+opt.features &= ~QStyleOptionViewItemV2::Alternate;
+drawCell(painter, opt, index);
+region -= rect;
+for (int r = span->top(); r <= span->bottom(); ++r) {
+const int vr = visualRow(r);
+if (vr < firstVisualRow || vr > lastVisualRow)
+continue;
+for (int c = span->left(); c <= span->right(); ++c) {
+const int vc = visualColumn(c);
+if (vc < firstVisualColumn  || vc > lastVisualColumn)
+continue;
+drawn->setBit((vr - firstVisualRow) * (lastVisualColumn - firstVisualColumn + 1)
++ vc - firstVisualColumn);
+}
+}
+}
+painter->setClipRegion(region);
+}
+/*!
+\internal
+Updates spans after row insertion.
+*/
+void QTableViewPrivate::_q_updateSpanInsertedRows(const QModelIndex &parent, int start, int end)
+{
+Q_UNUSED(parent)
+spans.updateInsertedRows(start, end);
+}
+/*!
+\internal
+Updates spans after column insertion.
+*/
+void QTableViewPrivate::_q_updateSpanInsertedColumns(const QModelIndex &parent, int start, int end)
+{
+Q_UNUSED(parent)
+spans.updateInsertedColumns(start, end);
+}
+/*!
+\internal
+Updates spans after row removal.
+*/
+void QTableViewPrivate::_q_updateSpanRemovedRows(const QModelIndex &parent, int start, int end)
+{
+Q_UNUSED(parent)
+spans.updateRemovedRows(start, end);
+}
+/*!
+\internal
+Updates spans after column removal.
+*/
+void QTableViewPrivate::_q_updateSpanRemovedColumns(const QModelIndex &parent, int start, int end)
+{
+Q_UNUSED(parent)
+spans.updateRemovedColumns(start, end);
+}
+/*!
+\internal
+Draws a table cell.
+*/
+void QTableViewPrivate::drawCell(QPainter *painter, const QStyleOptionViewItemV4 &option, const QModelIndex &index)
+{
+Q_Q(QTableView);
+QStyleOptionViewItemV4 opt = option;
+if (selectionModel && selectionModel->isSelected(index))
+opt.state |= QStyle::State_Selected;
+if (index == hover)
+opt.state |= QStyle::State_MouseOver;
+if (option.state & QStyle::State_Enabled) {
+QPalette::ColorGroup cg;
+if ((model->flags(index) & Qt::ItemIsEnabled) == 0) {
+opt.state &= ~QStyle::State_Enabled;
+cg = QPalette::Disabled;
+} else {
+cg = QPalette::Normal;
+}
+opt.palette.setCurrentColorGroup(cg);
+}
+if (index == q->currentIndex()) {
+const bool focus = (q->hasFocus() || viewport->hasFocus()) && q->currentIndex().isValid();
+if (focus)
+opt.state |= QStyle::State_HasFocus;
+}
+q->style()->drawPrimitive(QStyle::PE_PanelItemViewRow, &opt, painter, q);
+if (const QWidget *widget = editorForIndex(index).editor) {
+painter->save();
+painter->setClipRect(widget->geometry());
+q->itemDelegate(index)->paint(painter, opt, index);
+painter->restore();
+} else {
+q->itemDelegate(index)->paint(painter, opt, index);
+}
+}
+/*!
+\class QTableView
+\brief The QTableView class provides a default model/view
+implementation of a table view.
+\ingroup model-view
+\ingroup advanced
+A QTableView implements a table view that displays items from a
+model. This class is used to provide standard tables that were
+previously provided by the QTable class, but using the more
+flexible approach provided by Qt's model/view architecture.
+The QTableView class is one of the \l{Model/View Classes}
+and is part of Qt's \l{Model/View Programming}{model/view framework}.
+QTableView implements the interfaces defined by the
+QAbstractItemView class to allow it to display data provided by
+models derived from the QAbstractItemModel class.
+\section1 Navigation
+You can navigate the cells in the table by clicking on a cell with the
+mouse, or by using the arrow keys. Because QTableView enables
+\l{QAbstractItemView::tabKeyNavigation}{tabKeyNavigation} by default, you
+can also hit Tab and Backtab to move from cell to cell.
+\section1 Visual Appearance
+The table has a vertical header that can be obtained using the
+verticalHeader() function, and a horizontal header that is available
+through the horizontalHeader() function. The height of each row in the
+table can be found by using rowHeight(); similarly, the width of
+columns can be found using columnWidth().  Since both of these are plain
+widgets, you can hide either of them using their hide() functions.
+Rows and columns can be hidden and shown with hideRow(), hideColumn(),
+showRow(), and showColumn(). They can be selected with selectRow()
+and selectColumn(). The table will show a grid depending on the
+\l showGrid property.
+The items shown in a table view, like those in the other item views, are
+rendered and edited using standard \l{QItemDelegate}{delegates}. However,
+for some tasks it is sometimes useful to be able to insert widgets in a
+table instead. Widgets are set for particular indexes with the
+\l{QAbstractItemView::}{setIndexWidget()} function, and
+later retrieved with \l{QAbstractItemView::}{indexWidget()}.
+\table
+\row \o \inlineimage qtableview-resized.png
+\o By default, the cells in a table do not expand to fill the available space.
+You can make the cells fill the available space by stretching the last
+header section. Access the relevant header using horizontalHeader()
+or verticalHeader() and set the header's \l{QHeaderView::}{stretchLastSection}
+property.
+To distribute the available space according to the space requirement of
+each column or row, call the view's resizeColumnsToContents() or
+resizeRowsToContents() functions.
+\endtable
+\section1 Coordinate Systems
+For some specialized forms of tables it is useful to be able to
+convert between row and column indexes and widget coordinates.
+The rowAt() function provides the y-coordinate within the view of the
+specified row; the row index can be used to obtain a corresponding
+y-coordinate with rowViewportPosition(). The columnAt() and
+columnViewportPosition() functions provide the equivalent conversion
+operations between x-coordinates and column indexes.
+\section1 Styles
+QTableView is styled appropriately for each platform. The following images show
+how it looks on three different platforms. Go to the \l{Qt Widget Gallery} to see
+its appearance in other styles.
+\table 100%
+\row \o \inlineimage windowsxp-tableview.png Screenshot of a Windows XP style table view
+\o \inlineimage macintosh-tableview.png Screenshot of a Macintosh style table view
+\o \inlineimage plastique-tableview.png Screenshot of a Plastique style table view
+\row \o A \l{Windows XP Style Widget Gallery}{Windows XP style} table view.
+\o A \l{Macintosh Style Widget Gallery}{Macintosh style} table view.
+\o A \l{Plastique Style Widget Gallery}{Plastique style} table view.
+\endtable
+\sa QTableWidget, {View Classes}, QAbstractItemModel, QAbstractItemView,
+{Chart Example}, {Pixelator Example}, {Table Model Example}
+*/
+/*!
+Constructs a table view with a \a parent to represent the data.
+\sa QAbstractItemModel
+*/
+QTableView::QTableView(QWidget *parent)
+: QAbstractItemView(*new QTableViewPrivate, parent)
+{
+Q_D(QTableView);
+d->init();
+}
+/*!
+\internal
+*/
+QTableView::QTableView(QTableViewPrivate &dd, QWidget *parent)
+: QAbstractItemView(dd, parent)
+{
+Q_D(QTableView);
+d->init();
+}
+/*!
+Destroys the table view.
+*/
+QTableView::~QTableView()
+{
+}
+/*!
+\reimp
+*/
+void QTableView::setModel(QAbstractItemModel *model)
+{
+Q_D(QTableView);
+connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+this, SLOT(_q_updateSpanInsertedRows(QModelIndex,int,int)));
+connect(model, SIGNAL(columnsInserted(QModelIndex,int,int)),
+this, SLOT(_q_updateSpanInsertedColumns(QModelIndex,int,int)));
+connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+this, SLOT(_q_updateSpanRemovedRows(QModelIndex,int,int)));
+connect(model, SIGNAL(columnsRemoved(QModelIndex,int,int)),
+this, SLOT(_q_updateSpanRemovedColumns(QModelIndex,int,int)));
+d->verticalHeader->setModel(model);
+d->horizontalHeader->setModel(model);
+QAbstractItemView::setModel(model);
+}
+/*!
+\reimp
+*/
+void QTableView::setRootIndex(const QModelIndex &index)
+{
+Q_D(QTableView);
+if (index == d->root) {
+viewport()->update();
+return;
+}
+d->verticalHeader->setRootIndex(index);
+d->horizontalHeader->setRootIndex(index);
+QAbstractItemView::setRootIndex(index);
+}
+/*!
+\reimp
+*/
+void QTableView::setSelectionModel(QItemSelectionModel *selectionModel)
+{
+Q_D(QTableView);
+Q_ASSERT(selectionModel);
+d->verticalHeader->setSelectionModel(selectionModel);
+d->horizontalHeader->setSelectionModel(selectionModel);
+QAbstractItemView::setSelectionModel(selectionModel);
+}
+/*!
+Returns the table view's horizontal header.
+\sa setHorizontalHeader(), verticalHeader(), QAbstractItemModel::headerData()
+*/
+QHeaderView *QTableView::horizontalHeader() const
+{
+Q_D(const QTableView);
+return d->horizontalHeader;
+}
+/*!
+Returns the table view's vertical header.
+\sa setVerticalHeader(), horizontalHeader(), QAbstractItemModel::headerData()
+*/
+QHeaderView *QTableView::verticalHeader() const
+{
+Q_D(const QTableView);
+return d->verticalHeader;
+}
+/*!
+Sets the widget to use for the horizontal header to \a header.
+\sa horizontalHeader() setVerticalHeader()
+*/
+void QTableView::setHorizontalHeader(QHeaderView *header)
+{
+Q_D(QTableView);
+if (!header || header == d->horizontalHeader)
+return;
+if (d->horizontalHeader && d->horizontalHeader->parent() == this)
+delete d->horizontalHeader;
+d->horizontalHeader = header;
+d->horizontalHeader->setParent(this);
+if (!d->horizontalHeader->model()) {
+d->horizontalHeader->setModel(d->model);
+if (d->selectionModel)
+d->horizontalHeader->setSelectionModel(d->selectionModel);
+}
+connect(d->horizontalHeader,SIGNAL(sectionResized(int,int,int)),
+this, SLOT(columnResized(int,int,int)));
+connect(d->horizontalHeader, SIGNAL(sectionMoved(int,int,int)),
+this, SLOT(columnMoved(int,int,int)));
+connect(d->horizontalHeader, SIGNAL(sectionCountChanged(int,int)),
+this, SLOT(columnCountChanged(int,int)));
+connect(d->horizontalHeader, SIGNAL(sectionPressed(int)), this, SLOT(selectColumn(int)));
+connect(d->horizontalHeader, SIGNAL(sectionEntered(int)), this, SLOT(_q_selectColumn(int)));
+connect(d->horizontalHeader, SIGNAL(sectionHandleDoubleClicked(int)),
+this, SLOT(resizeColumnToContents(int)));
+connect(d->horizontalHeader, SIGNAL(geometriesChanged()), this, SLOT(updateGeometries()));
+//update the sorting enabled states on the new header
+setSortingEnabled(d->sortingEnabled);
+}
+/*!
+Sets the widget to use for the vertical header to \a header.
+\sa verticalHeader() setHorizontalHeader()
+*/
+void QTableView::setVerticalHeader(QHeaderView *header)
+{
+Q_D(QTableView);
+if (!header || header == d->verticalHeader)
+return;
+if (d->verticalHeader && d->verticalHeader->parent() == this)
+delete d->verticalHeader;
+d->verticalHeader = header;
+d->verticalHeader->setParent(this);
+if (!d->verticalHeader->model()) {
+d->verticalHeader->setModel(d->model);
+if (d->selectionModel)
+d->verticalHeader->setSelectionModel(d->selectionModel);
+}
+connect(d->verticalHeader, SIGNAL(sectionResized(int,int,int)),
+this, SLOT(rowResized(int,int,int)));
+connect(d->verticalHeader, SIGNAL(sectionMoved(int,int,int)),
+this, SLOT(rowMoved(int,int,int)));
+connect(d->verticalHeader, SIGNAL(sectionCountChanged(int,int)),
+this, SLOT(rowCountChanged(int,int)));
+connect(d->verticalHeader, SIGNAL(sectionPressed(int)), this, SLOT(selectRow(int)));
+connect(d->verticalHeader, SIGNAL(sectionEntered(int)), this, SLOT(_q_selectRow(int)));
+connect(d->verticalHeader, SIGNAL(sectionHandleDoubleClicked(int)),
+this, SLOT(resizeRowToContents(int)));
+connect(d->verticalHeader, SIGNAL(geometriesChanged()), this, SLOT(updateGeometries()));
+}
+/*!
+\internal
+Scroll the contents of the table view by (\a dx, \a dy).
+*/
+void QTableView::scrollContentsBy(int dx, int dy)
+{
+Q_D(QTableView);
+d->delayedAutoScroll.stop(); // auto scroll was canceled by the user scrolling
+dx = isRightToLeft() ? -dx : dx;
+if (dx) {
+if (horizontalScrollMode() == QAbstractItemView::ScrollPerItem) {
+int oldOffset = d->horizontalHeader->offset();
+if (horizontalScrollBar()->value() == horizontalScrollBar()->maximum())
+d->horizontalHeader->setOffsetToLastSection();
+else
+d->horizontalHeader->setOffsetToSectionPosition(horizontalScrollBar()->value());
+int newOffset = d->horizontalHeader->offset();
+dx = isRightToLeft() ? newOffset - oldOffset : oldOffset - newOffset;
+} else {
+d->horizontalHeader->setOffset(horizontalScrollBar()->value());
+}
+}
+if (dy) {
+if (verticalScrollMode() == QAbstractItemView::ScrollPerItem) {
+int oldOffset = d->verticalHeader->offset();
+if (verticalScrollBar()->value() == verticalScrollBar()->maximum())
+d->verticalHeader->setOffsetToLastSection();
+else
+d->verticalHeader->setOffsetToSectionPosition(verticalScrollBar()->value());
+int newOffset = d->verticalHeader->offset();
+dy = oldOffset - newOffset;
+} else {
+d->verticalHeader->setOffset(verticalScrollBar()->value());
+}
+}
+d->scrollContentsBy(dx, dy);
+if (d->showGrid) {
+//we need to update the first line of the previous top item in the view
+//because it has the grid drawn if the header is invisible.
+//It is strictly related to what's done at then end of the paintEvent
+if (dy > 0 && d->horizontalHeader->isHidden() && d->verticalScrollMode == ScrollPerItem) {
+d->viewport->update(0, dy, d->viewport->width(), dy);
+}
+if (dx > 0 && d->verticalHeader->isHidden() && d->horizontalScrollMode == ScrollPerItem) {
+d->viewport->update(dx, 0, dx, d->viewport->height());
+}
+}
+}
+/*!
+\reimp
+*/
+QStyleOptionViewItem QTableView::viewOptions() const
+{
+QStyleOptionViewItem option = QAbstractItemView::viewOptions();
+option.showDecorationSelected = true;
+return option;
+}
+/*!
+Paints the table on receipt of the given paint event \a event.
+*/
+void QTableView::paintEvent(QPaintEvent *event)
+{
+Q_D(QTableView);
+// setup temp variables for the painting
+QStyleOptionViewItemV4 option = d->viewOptionsV4();
+const QPoint offset = d->scrollDelayOffset;
+const bool showGrid = d->showGrid;
+const int gridSize = showGrid ? 1 : 0;
+const int gridHint = style()->styleHint(QStyle::SH_Table_GridLineColor, &option, this);
+const QColor gridColor = static_cast<QRgb>(gridHint);
+const QPen gridPen = QPen(gridColor, 0, d->gridStyle);
+const QHeaderView *verticalHeader = d->verticalHeader;
+const QHeaderView *horizontalHeader = d->horizontalHeader;
+const QStyle::State state = option.state;
+const bool alternate = d->alternatingColors;
+const bool rightToLeft = isRightToLeft();
+QPainter painter(d->viewport);
+// if there's nothing to do, clear the area and return
+if (horizontalHeader->count() == 0 || verticalHeader->count() == 0 || !d->itemDelegate)
+return;
+uint x = horizontalHeader->length() - horizontalHeader->offset() - (rightToLeft ? 0 : 1);
+uint y = verticalHeader->length() - verticalHeader->offset() - 1;
+const QRegion region = event->region().translated(offset);
+const QVector<QRect> rects = region.rects();
+//firstVisualRow is the visual index of the first visible row.  lastVisualRow is the visual index of the last visible Row.
+//same goes for ...VisualColumn
+int firstVisualRow = qMax(verticalHeader->visualIndexAt(0),0);
+int lastVisualRow = verticalHeader->visualIndexAt(verticalHeader->viewport()->height());
+if (lastVisualRow == -1)
+lastVisualRow = d->model->rowCount(d->root) - 1;
+int firstVisualColumn = horizontalHeader->visualIndexAt(0);
+int lastVisualColumn = horizontalHeader->visualIndexAt(horizontalHeader->viewport()->width());
+if (rightToLeft)
+qSwap(firstVisualColumn, lastVisualColumn);
+if (firstVisualColumn == -1)
+firstVisualColumn = 0;
+if (lastVisualColumn == -1)
+lastVisualColumn = horizontalHeader->count() - 1;
+QBitArray drawn((lastVisualRow - firstVisualRow + 1) * (lastVisualColumn - firstVisualColumn + 1));
+if (d->hasSpans()) {
+d->drawAndClipSpans(region, &painter, option, &drawn,
+firstVisualRow, lastVisualRow, firstVisualColumn, lastVisualColumn);
+}
+for (int i = 0; i < rects.size(); ++i) {
+QRect dirtyArea = rects.at(i);
+dirtyArea.setBottom(qMin(dirtyArea.bottom(), int(y)));
+if (rightToLeft) {
+dirtyArea.setLeft(qMax(dirtyArea.left(), d->viewport->width() - int(x)));
+} else {
+dirtyArea.setRight(qMin(dirtyArea.right(), int(x)));
+}
+// get the horizontal start and end visual sections
+int left = horizontalHeader->visualIndexAt(dirtyArea.left());
+int right = horizontalHeader->visualIndexAt(dirtyArea.right());
+if (rightToLeft)
+qSwap(left, right);
+if (left == -1) left = 0;
+if (right == -1) right = horizontalHeader->count() - 1;
+// get the vertical start and end visual sections and if alternate color
+int bottom = verticalHeader->visualIndexAt(dirtyArea.bottom());
+if (bottom == -1) bottom = verticalHeader->count() - 1;
+int top = 0;
+bool alternateBase = false;
+if (alternate && verticalHeader->sectionsHidden()) {
+uint verticalOffset = verticalHeader->offset();
+int row = verticalHeader->logicalIndex(top);
+for (int y = 0;
+((uint)(y += verticalHeader->sectionSize(top)) <= verticalOffset) && (top < bottom);
+++top) {
+row = verticalHeader->logicalIndex(top);
+if (alternate && !verticalHeader->isSectionHidden(row))
+alternateBase = !alternateBase;
+}
+} else {
+top = verticalHeader->visualIndexAt(dirtyArea.top());
+alternateBase = (top & 1) && alternate;
+}
+if (top == -1 || top > bottom)
+continue;
+// Paint each row item
+for (int visualRowIndex = top; visualRowIndex <= bottom; ++visualRowIndex) {
+int row = verticalHeader->logicalIndex(visualRowIndex);
+if (verticalHeader->isSectionHidden(row))
+continue;
+int rowY = rowViewportPosition(row);
+rowY += offset.y();
+int rowh = rowHeight(row) - gridSize;
+// Paint each column item
+for (int visualColumnIndex = left; visualColumnIndex <= right; ++visualColumnIndex) {
+int currentBit = (visualRowIndex - firstVisualRow) * (lastVisualColumn - firstVisualColumn + 1)
++ visualColumnIndex - firstVisualColumn;
+if (currentBit < 0 || currentBit >= drawn.size() || drawn.testBit(currentBit))
+continue;
+drawn.setBit(currentBit);
+int col = horizontalHeader->logicalIndex(visualColumnIndex);
+if (horizontalHeader->isSectionHidden(col))
+continue;
+int colp = columnViewportPosition(col);
+colp += offset.x();
+int colw = columnWidth(col) - gridSize;
+const QModelIndex index = d->model->index(row, col, d->root);
+if (index.isValid()) {
+option.rect = QRect(colp + (showGrid && rightToLeft ? 1 : 0), rowY, colw, rowh);
+if (alternate) {
+if (alternateBase)
+option.features |= QStyleOptionViewItemV2::Alternate;
+else
+option.features &= ~QStyleOptionViewItemV2::Alternate;
+}
+d->drawCell(&painter, option, index);
+}
+}
+alternateBase = !alternateBase && alternate;
+}
+if (showGrid) {
+// Find the bottom right (the last rows/coloumns might be hidden)
+while (verticalHeader->isSectionHidden(verticalHeader->logicalIndex(bottom))) --bottom;
+QPen old = painter.pen();
+painter.setPen(gridPen);
+// Paint each row
+for (int visualIndex = top; visualIndex <= bottom; ++visualIndex) {
+int row = verticalHeader->logicalIndex(visualIndex);
+if (verticalHeader->isSectionHidden(row))
+continue;
+int rowY = rowViewportPosition(row);
+rowY += offset.y();
+int rowh = rowHeight(row) - gridSize;
+painter.drawLine(dirtyArea.left(), rowY + rowh, dirtyArea.right(), rowY + rowh);
+}
+// Paint each column
+for (int h = left; h <= right; ++h) {
+int col = horizontalHeader->logicalIndex(h);
+if (horizontalHeader->isSectionHidden(col))
+continue;
+int colp = columnViewportPosition(col);
+colp += offset.x();
+if (!rightToLeft)
+colp +=  columnWidth(col) - gridSize;
+painter.drawLine(colp, dirtyArea.top(), colp, dirtyArea.bottom());
+}
+//draw the top & left grid lines if the headers are not visible.
+//We do update this line when subsequent scroll happen (see scrollContentsBy)
+if (horizontalHeader->isHidden() && verticalScrollMode() == ScrollPerItem)
+painter.drawLine(dirtyArea.left(), 0, dirtyArea.right(), 0);
+if (verticalHeader->isHidden() && horizontalScrollMode() == ScrollPerItem)
+painter.drawLine(0, dirtyArea.top(), 0, dirtyArea.bottom());
+painter.setPen(old);
+}
+}
+#ifndef QT_NO_DRAGANDDROP
+// Paint the dropIndicator
+d->paintDropIndicator(&painter);
+#endif
+}
+/*!
+Returns the index position of the model item corresponding to the
+table item at position \a pos in contents coordinates.
+*/
+QModelIndex QTableView::indexAt(const QPoint &pos) const
+{
+Q_D(const QTableView);
+d->executePostedLayout();
+int r = rowAt(pos.y());
+int c = columnAt(pos.x());
+if (r >= 0 && c >= 0) {
+if (d->hasSpans()) {
+QSpanCollection::Span span = d->span(r, c);
+r = span.top();
+c = span.left();
+}
+return d->model->index(r, c, d->root);
+}
+return QModelIndex();
+}
+/*!
+Returns the horizontal offset of the items in the table view.
+Note that the table view uses the horizontal header section
+positions to determine the positions of columns in the view.
+\sa verticalOffset()
+*/
+int QTableView::horizontalOffset() const
+{
+Q_D(const QTableView);
+return d->horizontalHeader->offset();
+}
+/*!
+Returns the vertical offset of the items in the table view.
+Note that the table view uses the vertical header section
+positions to determine the positions of rows in the view.
+\sa horizontalOffset()
+*/
+int QTableView::verticalOffset() const
+{
+Q_D(const QTableView);
+return d->verticalHeader->offset();
+}
+/*!
+\fn QModelIndex QTableView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
+Moves the cursor in accordance with the given \a cursorAction, using the
+information provided by the \a modifiers.
+\sa QAbstractItemView::CursorAction
+*/
+QModelIndex QTableView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
+{
+Q_D(QTableView);
+Q_UNUSED(modifiers);
+int bottom = d->model->rowCount(d->root) - 1;
+// make sure that bottom is the bottommost *visible* row
+while (bottom >= 0 && isRowHidden(d->logicalRow(bottom)))
+--bottom;
+int right = d->model->columnCount(d->root) - 1;
+while (right >= 0 && isColumnHidden(d->logicalColumn(right)))
+--right;
+if (bottom == -1 || right == -1)
+return QModelIndex(); // model is empty
+QModelIndex current = currentIndex();
+if (!current.isValid()) {
+int row = 0;
+int column = 0;
+while (column < right && isColumnHidden(d->logicalColumn(column)))
+++column;
+while (isRowHidden(d->logicalRow(row)) && row < bottom)
+++row;
+d->visualCursor = QPoint(column, row);
+return d->model->index(d->logicalRow(row), d->logicalColumn(column), d->root);
+}
+// Update visual cursor if current index has changed.
+QPoint visualCurrent(d->visualColumn(current.column()), d->visualRow(current.row()));
+if (visualCurrent != d->visualCursor) {
+if (d->hasSpans()) {
+QSpanCollection::Span span = d->span(current.row(), current.column());
+if (span.top() > d->visualCursor.y() || d->visualCursor.y() > span.bottom()
+|| span.left() > d->visualCursor.x() || d->visualCursor.x() > span.right())
+d->visualCursor = visualCurrent;
+} else {
+d->visualCursor = visualCurrent;
+}
+}
+int visualRow = d->visualCursor.y();
+if (visualRow > bottom)
+visualRow = bottom;
+Q_ASSERT(visualRow != -1);
+int visualColumn = d->visualCursor.x();
+if (visualColumn > right)
+visualColumn = right;
+Q_ASSERT(visualColumn != -1);
+if (isRightToLeft()) {
+if (cursorAction == MoveLeft)
+cursorAction = MoveRight;
+else if (cursorAction == MoveRight)
+cursorAction = MoveLeft;
+}
+switch (cursorAction) {
+case MoveUp: {
+int originalRow = visualRow;
+#ifdef QT_KEYPAD_NAVIGATION
+if (QApplication::keypadNavigationEnabled() && visualRow == 0)
+visualRow = d->visualRow(model()->rowCount() - 1) + 1;
+// FIXME? visualRow = bottom + 1;
+#endif
+int r = d->logicalRow(visualRow);
+int c = d->logicalColumn(visualColumn);
+if (r != -1 && d->hasSpans()) {
+QSpanCollection::Span span = d->span(r, c);
+if (span.width() > 1 || span.height() > 1)
+visualRow = d->visualRow(span.top());
+}
+while (visualRow >= 0) {
+--visualRow;
+r = d->logicalRow(visualRow);
+c = d->logicalColumn(visualColumn);
+if (r == -1 || (!isRowHidden(r) && d->isCellEnabled(r, c)))
+break;
+}
+if (visualRow < 0)
+visualRow = originalRow;
+break;
+}
+case MoveDown: {
+int originalRow = visualRow;
+if (d->hasSpans()) {
+QSpanCollection::Span span = d->span(current.row(), current.column());
+visualRow = d->visualRow(d->rowSpanEndLogical(span.top(), span.height()));
+}
+#ifdef QT_KEYPAD_NAVIGATION
+if (QApplication::keypadNavigationEnabled() && visualRow >= bottom)
+visualRow = -1;
+#endif
+int r = d->logicalRow(visualRow);
+int c = d->logicalColumn(visualColumn);
+if (r != -1 && d->hasSpans()) {
+QSpanCollection::Span span = d->span(r, c);
+if (span.width() > 1 || span.height() > 1)
+visualRow = d->visualRow(d->rowSpanEndLogical(span.top(), span.height()));
+}
+while (visualRow <= bottom) {
+++visualRow;
+r = d->logicalRow(visualRow);
+c = d->logicalColumn(visualColumn);
+if (r == -1 || (!isRowHidden(r) && d->isCellEnabled(r, c)))
+break;
+}
+if (visualRow > bottom)
+visualRow = originalRow;
+break;
+}
+case MovePrevious:
+case MoveLeft: {
+int originalRow = visualRow;
+int originalColumn = visualColumn;
+bool firstTime = true;
+bool looped = false;
+bool wrapped = false;
+do {
+int r = d->logicalRow(visualRow);
+int c = d->logicalColumn(visualColumn);
+if (firstTime && c != -1 && d->hasSpans()) {
+firstTime = false;
+QSpanCollection::Span span = d->span(r, c);
+if (span.width() > 1 || span.height() > 1)
+visualColumn = d->visualColumn(span.left());
+}
+while (visualColumn >= 0) {
+--visualColumn;
+r = d->logicalRow(visualRow);
+c = d->logicalColumn(visualColumn);
+if (r == -1 || c == -1 || (!isRowHidden(r) && !isColumnHidden(c) && d->isCellEnabled(r, c)))
+break;
+if (wrapped && (originalRow < visualRow || (originalRow == visualRow && originalColumn <= visualColumn))) {
+looped = true;
+break;
+}
+}
+if (cursorAction == MoveLeft || visualColumn >= 0)
+break;
+visualColumn = right + 1;
+if (visualRow == 0) {
+wrapped = true;
+visualRow = bottom;
+} else {
+--visualRow;
+}
+} while (!looped);
+if (visualColumn < 0)
+visualColumn = originalColumn;
+break;
+}
+case MoveNext:
+case MoveRight: {
+int originalRow = visualRow;
+int originalColumn = visualColumn;
+bool firstTime = true;
+bool looped = false;
+bool wrapped = false;
+do {
+int r = d->logicalRow(visualRow);
+int c = d->logicalColumn(visualColumn);
+if (firstTime && c != -1 && d->hasSpans()) {
+firstTime = false;
+QSpanCollection::Span span = d->span(r, c);
+if (span.width() > 1 || span.height() > 1)
+visualColumn = d->visualColumn(d->columnSpanEndLogical(span.left(), span.width()));
+}
+while (visualColumn <= right) {
+++visualColumn;
+r = d->logicalRow(visualRow);
+c = d->logicalColumn(visualColumn);
+if (r == -1 || c == -1 || (!isRowHidden(r) && !isColumnHidden(c) && d->isCellEnabled(r, c)))
+break;
+if (wrapped && (originalRow > visualRow || (originalRow == visualRow && originalColumn >= visualColumn))) {
+looped = true;
+break;
+}
+}
+if (cursorAction == MoveRight || visualColumn <= right)
+break;
+visualColumn = -1;
+if (visualRow == bottom) {
+wrapped = true;
+visualRow = 0;
+} else {
+++visualRow;
+}
+} while (!looped);
+if (visualColumn > right)
+visualColumn = originalColumn;
+break;
+}
+case MoveHome:
+visualColumn = 0;
+while (visualColumn < right && d->isVisualColumnHiddenOrDisabled(visualRow, visualColumn))
+++visualColumn;
+if (modifiers & Qt::ControlModifier) {
+visualRow = 0;
+while (visualRow < bottom && d->isVisualRowHiddenOrDisabled(visualRow, visualColumn))
+++visualRow;
+}
+break;
+case MoveEnd:
+visualColumn = right;
+if (modifiers & Qt::ControlModifier)
+visualRow = bottom;
+break;
+case MovePageUp: {
+int newRow = rowAt(visualRect(current).top() - d->viewport->height());
+if (newRow == -1)
+newRow = d->logicalRow(0);
+return d->model->index(newRow, current.column(), d->root);
+}
+case MovePageDown: {
+int newRow = rowAt(visualRect(current).bottom() + d->viewport->height());
+if (newRow == -1)
+newRow = d->logicalRow(bottom);
+return d->model->index(newRow, current.column(), d->root);
+}}
+d->visualCursor = QPoint(visualColumn, visualRow);
+int logicalRow = d->logicalRow(visualRow);
+int logicalColumn = d->logicalColumn(visualColumn);
+if (!d->model->hasIndex(logicalRow, logicalColumn, d->root))
+return QModelIndex();
+QModelIndex result = d->model->index(logicalRow, logicalColumn, d->root);
+if (!d->isRowHidden(logicalRow) && !d->isColumnHidden(logicalColumn) && d->isIndexEnabled(result))
+return result;
+return QModelIndex();
+}
+/*!
+\fn void QTableView::setSelection(const QRect &rect,
+QItemSelectionModel::SelectionFlags flags)
+Selects the items within the given \a rect and in accordance with
+the specified selection \a flags.
+*/
+void QTableView::setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command)
+{
+Q_D(QTableView);
+QModelIndex tl = indexAt(QPoint(isRightToLeft() ? qMax(rect.left(), rect.right())
+: qMin(rect.left(), rect.right()), qMin(rect.top(), rect.bottom())));
+QModelIndex br = indexAt(QPoint(isRightToLeft() ? qMin(rect.left(), rect.right()) :
+qMax(rect.left(), rect.right()), qMax(rect.top(), rect.bottom())));
+if (!d->selectionModel || !tl.isValid() || !br.isValid() || !d->isIndexEnabled(tl) || !d->isIndexEnabled(br))
+return;
+bool verticalMoved = verticalHeader()->sectionsMoved();
+bool horizontalMoved = horizontalHeader()->sectionsMoved();
+QItemSelection selection;
+if (d->hasSpans()) {
+bool expanded;
+int top = qMin(d->visualRow(tl.row()), d->visualRow(br.row()));
+int left = qMin(d->visualColumn(tl.column()), d->visualColumn(br.column()));
+int bottom = qMax(d->visualRow(tl.row()), d->visualRow(br.row()));
+int right = qMax(d->visualColumn(tl.column()), d->visualColumn(br.column()));
+do {
+expanded = false;
+foreach (QSpanCollection::Span *it, d->spans.spans) {
+const QSpanCollection::Span &span = *it;
+int t = d->visualRow(span.top());
+int l = d->visualColumn(span.left());
+int b = d->visualRow(d->rowSpanEndLogical(span.top(), span.height()));
+int r = d->visualColumn(d->columnSpanEndLogical(span.left(), span.width()));
+if ((t > bottom) || (l > right) || (top > b) || (left > r))
+continue; // no intersect
+if (t < top) {
+top = t;
+expanded = true;
+}
+if (l < left) {
+left = l;
+expanded = true;
+}
+if (b > bottom) {
+bottom = b;
+expanded = true;
+}
+if (r > right) {
+right = r;
+expanded = true;
+}
+if (expanded)
+break;
+}
+} while (expanded);
+for (int horizontal = left; horizontal <= right; ++horizontal) {
+int column = d->logicalColumn(horizontal);
+for (int vertical = top; vertical <= bottom; ++vertical) {
+int row = d->logicalRow(vertical);
+QModelIndex index = d->model->index(row, column, d->root);
+selection.append(QItemSelectionRange(index));
+}
+}
+} else if (verticalMoved && horizontalMoved) {
+int top = d->visualRow(tl.row());
+int left = d->visualColumn(tl.column());
+int bottom = d->visualRow(br.row());
+int right = d->visualColumn(br.column());
+for (int horizontal = left; horizontal <= right; ++horizontal) {
+int column = d->logicalColumn(horizontal);
+for (int vertical = top; vertical <= bottom; ++vertical) {
+int row = d->logicalRow(vertical);
+QModelIndex index = d->model->index(row, column, d->root);
+selection.append(QItemSelectionRange(index));
+}
+}
+} else if (horizontalMoved) {
+int left = d->visualColumn(tl.column());
+int right = d->visualColumn(br.column());
+for (int visual = left; visual <= right; ++visual) {
+int column = d->logicalColumn(visual);
+QModelIndex topLeft = d->model->index(tl.row(), column, d->root);
+QModelIndex bottomRight = d->model->index(br.row(), column, d->root);
+selection.append(QItemSelectionRange(topLeft, bottomRight));
+}
+} else if (verticalMoved) {
+int top = d->visualRow(tl.row());
+int bottom = d->visualRow(br.row());
+for (int visual = top; visual <= bottom; ++visual) {
+int row = d->logicalRow(visual);
+QModelIndex topLeft = d->model->index(row, tl.column(), d->root);
+QModelIndex bottomRight = d->model->index(row, br.column(), d->root);
+selection.append(QItemSelectionRange(topLeft, bottomRight));
+}
+} else { // nothing moved
+selection.append(QItemSelectionRange(tl, br));
+}
+d->selectionModel->select(selection, command);
+}
+/*!
+\internal
+Returns the rectangle from the viewport of the items in the given
+\a selection.
+*/
+QRegion QTableView::visualRegionForSelection(const QItemSelection &selection) const
+{
+Q_D(const QTableView);
+if (selection.isEmpty())
+return QRegion();
+QRegion selectionRegion;
+bool verticalMoved = verticalHeader()->sectionsMoved();
+bool horizontalMoved = horizontalHeader()->sectionsMoved();
+if ((verticalMoved && horizontalMoved) || (d->hasSpans() && (verticalMoved || horizontalMoved))) {
+for (int i = 0; i < selection.count(); ++i) {
+QItemSelectionRange range = selection.at(i);
+if (range.parent() != d->root || !range.isValid())
+continue;
+for (int r = range.top(); r <= range.bottom(); ++r)
+for (int c = range.left(); c <= range.right(); ++c)
+selectionRegion += QRegion(visualRect(d->model->index(r, c, d->root)));
+}
+} else if (horizontalMoved) {
+for (int i = 0; i < selection.count(); ++i) {
+QItemSelectionRange range = selection.at(i);
+if (range.parent() != d->root || !range.isValid())
+continue;
+int top = rowViewportPosition(range.top());
+int bottom = rowViewportPosition(range.bottom()) + rowHeight(range.bottom());
+if (top > bottom)
+qSwap<int>(top, bottom);
+int height = bottom - top;
+for (int c = range.left(); c <= range.right(); ++c)
+selectionRegion += QRegion(QRect(columnViewportPosition(c), top,
+columnWidth(c), height));
+}
+} else if (verticalMoved) {
+for (int i = 0; i < selection.count(); ++i) {
+QItemSelectionRange range = selection.at(i);
+if (range.parent() != d->root || !range.isValid())
+continue;
+int left = columnViewportPosition(range.left());
+int right = columnViewportPosition(range.right()) + columnWidth(range.right());
+if (left > right)
+qSwap<int>(left, right);
+int width = right - left;
+for (int r = range.top(); r <= range.bottom(); ++r)
+selectionRegion += QRegion(QRect(left, rowViewportPosition(r),
+width, rowHeight(r)));
+}
+} else { // nothing moved
+for (int i = 0; i < selection.count(); ++i) {
+QItemSelectionRange range = selection.at(i);
+if (range.parent() != d->root || !range.isValid())
+continue;
+d->trimHiddenSelections(&range);
+const int rtop = rowViewportPosition(range.top());
+const int rbottom = rowViewportPosition(range.bottom()) + rowHeight(range.bottom());
+const int rleft = columnViewportPosition(range.left());
+const int rright = columnViewportPosition(range.right()) + columnWidth(range.right());
+selectionRegion += QRect(QPoint(rleft, rtop), QPoint(rright, rbottom));
+if (d->hasSpans()) {
+foreach (QSpanCollection::Span *s,
+d->spans.spansInRect(range.left(), range.top(), range.width(), range.height())) {
+if (range.contains(s->top(), s->left(), range.parent()))
+selectionRegion += d->visualSpanRect(*s);
+}
+}
+}
+}
+return selectionRegion;
+}
+/*!
+\reimp
+*/
+QModelIndexList QTableView::selectedIndexes() const
+{
+Q_D(const QTableView);
+QModelIndexList viewSelected;
+QModelIndexList modelSelected;
+if (d->selectionModel)
+modelSelected = d->selectionModel->selectedIndexes();
+for (int i = 0; i < modelSelected.count(); ++i) {
+QModelIndex index = modelSelected.at(i);
+if (!isIndexHidden(index) && index.parent() == d->root)
+viewSelected.append(index);
+}
+return viewSelected;
+}
+/*!
+This slot is called whenever rows are added or deleted. The
+previous number of rows is specified by \a oldCount, and the new
+number of rows is specified by \a newCount.
+*/
+void QTableView::rowCountChanged(int /*oldCount*/, int /*newCount*/ )
+{
+Q_D(QTableView);
+updateGeometries();
+if (verticalScrollMode() == QAbstractItemView::ScrollPerItem)
+d->verticalHeader->setOffsetToSectionPosition(verticalScrollBar()->value());
+else
+d->verticalHeader->setOffset(verticalScrollBar()->value());
+d->viewport->update();
+}
+/*!
+This slot is called whenever columns are added or deleted. The
+previous number of columns is specified by \a oldCount, and the new
+number of columns is specified by \a newCount.
+*/
+void QTableView::columnCountChanged(int, int)
+{
+Q_D(QTableView);
+updateGeometries();
+if (horizontalScrollMode() == QAbstractItemView::ScrollPerItem)
+d->horizontalHeader->setOffsetToSectionPosition(horizontalScrollBar()->value());
+else
+d->horizontalHeader->setOffset(horizontalScrollBar()->value());
+d->viewport->update();
+}
+/*!
+\reimp
+*/
+void QTableView::updateGeometries()
+{
+Q_D(QTableView);
+if (d->geometryRecursionBlock)
+return;
+d->geometryRecursionBlock = true;
+int width = 0;
+if (!d->verticalHeader->isHidden()) {
+width = qMax(d->verticalHeader->minimumWidth(), d->verticalHeader->sizeHint().width());
+width = qMin(width, d->verticalHeader->maximumWidth());
+}
+int height = 0;
+if (!d->horizontalHeader->isHidden()) {
+height = qMax(d->horizontalHeader->minimumHeight(), d->horizontalHeader->sizeHint().height());
+height = qMin(height, d->horizontalHeader->maximumHeight());
+}
+bool reverse = isRightToLeft();
+if (reverse)
+setViewportMargins(0, height, width, 0);
+else
+setViewportMargins(width, height, 0, 0);
+// update headers
+QRect vg = d->viewport->geometry();
+int verticalLeft = reverse ? vg.right() + 1 : (vg.left() - width);
+d->verticalHeader->setGeometry(verticalLeft, vg.top(), width, vg.height());
+if (d->verticalHeader->isHidden())
+QMetaObject::invokeMethod(d->verticalHeader, "updateGeometries");
+int horizontalTop = vg.top() - height;
+d->horizontalHeader->setGeometry(vg.left(), horizontalTop, vg.width(), height);
+if (d->horizontalHeader->isHidden())
+QMetaObject::invokeMethod(d->horizontalHeader, "updateGeometries");
+// update cornerWidget
+if (d->horizontalHeader->isHidden() || d->verticalHeader->isHidden()) {
+d->cornerWidget->setHidden(true);
+} else {
+d->cornerWidget->setHidden(false);
+d->cornerWidget->setGeometry(verticalLeft, horizontalTop, width, height);
+}
+// update scroll bars
+// ### move this block into the if
+QSize vsize = d->viewport->size();
+QSize max = maximumViewportSize();
+uint horizontalLength = d->horizontalHeader->length();
+uint verticalLength = d->verticalHeader->length();
+if ((uint)max.width() >= horizontalLength && (uint)max.height() >= verticalLength)
+vsize = max;
+// horizontal scroll bar
+const int columnCount = d->horizontalHeader->count();
+const int viewportWidth = vsize.width();
+int columnsInViewport = 0;
+for (int width = 0, column = columnCount - 1; column >= 0; --column) {
+int logical = d->horizontalHeader->logicalIndex(column);
+if (!d->horizontalHeader->isSectionHidden(logical)) {
+width += d->horizontalHeader->sectionSize(logical);
+if (width > viewportWidth)
+break;
+++columnsInViewport;
+}
+}
+columnsInViewport = qMax(columnsInViewport, 1); //there must be always at least 1 column
+if (horizontalScrollMode() == QAbstractItemView::ScrollPerItem) {
+const int visibleColumns = columnCount - d->horizontalHeader->hiddenSectionCount();
+horizontalScrollBar()->setRange(0, visibleColumns - columnsInViewport);
+horizontalScrollBar()->setPageStep(columnsInViewport);
+if (columnsInViewport >= visibleColumns)
+d->horizontalHeader->setOffset(0);
+horizontalScrollBar()->setSingleStep(1);
+} else { // ScrollPerPixel
+horizontalScrollBar()->setPageStep(vsize.width());
+horizontalScrollBar()->setRange(0, horizontalLength - vsize.width());
+horizontalScrollBar()->setSingleStep(qMax(vsize.width() / (columnsInViewport + 1), 2));
+}
+// vertical scroll bar
+const int rowCount = d->verticalHeader->count();
+const int viewportHeight = vsize.height();
+int rowsInViewport = 0;
+for (int height = 0, row = rowCount - 1; row >= 0; --row) {
+int logical = d->verticalHeader->logicalIndex(row);
+if (!d->verticalHeader->isSectionHidden(logical)) {
+height += d->verticalHeader->sectionSize(logical);
+if (height > viewportHeight)
+break;
+++rowsInViewport;
+}
+}
+rowsInViewport = qMax(rowsInViewport, 1); //there must be always at least 1 row
+if (verticalScrollMode() == QAbstractItemView::ScrollPerItem) {
+const int visibleRows = rowCount - d->verticalHeader->hiddenSectionCount();
+verticalScrollBar()->setRange(0, visibleRows - rowsInViewport);
+verticalScrollBar()->setPageStep(rowsInViewport);
+if (rowsInViewport >= visibleRows)
+d->verticalHeader->setOffset(0);
+verticalScrollBar()->setSingleStep(1);
+} else { // ScrollPerPixel
+verticalScrollBar()->setPageStep(vsize.height());
+verticalScrollBar()->setRange(0, verticalLength - vsize.height());
+verticalScrollBar()->setSingleStep(qMax(vsize.height() / (rowsInViewport + 1), 2));
+}
+d->geometryRecursionBlock = false;
+QAbstractItemView::updateGeometries();
+}
+/*!
+Returns the size hint for the given \a row's height or -1 if there
+is no model.
+If you need to set the height of a given row to a fixed value, call
+QHeaderView::resizeSection() on the table's vertical header.
+If you reimplement this function in a subclass, note that the value you
+return is only used when resizeRowToContents() is called. In that case,
+if a larger row height is required by either the vertical header or
+the item delegate, that width will be used instead.
+\sa QWidget::sizeHint, verticalHeader()
+*/
+int QTableView::sizeHintForRow(int row) const
+{
+Q_D(const QTableView);
+if (!model())
+return -1;
+int left = qMax(0, columnAt(0));
+int right = columnAt(d->viewport->width());
+if (right == -1) // the table don't have enough columns to fill the viewport
+right = d->model->columnCount(d->root) - 1;
+QStyleOptionViewItemV4 option = d->viewOptionsV4();
+int hint = 0;
+QModelIndex index;
+for (int column = left; column <= right; ++column) {
+int logicalColumn = d->horizontalHeader->logicalIndex(column);
+if (d->horizontalHeader->isSectionHidden(logicalColumn))
+continue;
+index = d->model->index(row, logicalColumn, d->root);
+if (d->wrapItemText) {// for wrapping boundaries
+option.rect.setY(rowViewportPosition(index.row()));
+option.rect.setHeight(rowHeight(index.row()));
+option.rect.setX(columnViewportPosition(index.column()));
+option.rect.setWidth(columnWidth(index.column()));
+}
+QWidget *editor = d->editorForIndex(index).editor;
+if (editor && d->persistent.contains(editor)) {
+hint = qMax(hint, editor->sizeHint().height());
+int min = editor->minimumSize().height();
+int max = editor->maximumSize().height();
+hint = qBound(min, hint, max);
+}
+hint = qMax(hint, itemDelegate(index)->sizeHint(option, index).height());
+}
+return d->showGrid ? hint + 1 : hint;
+}
+/*!
+Returns the size hint for the given \a column's width or -1 if
+there is no model.
+If you need to set the width of a given column to a fixed value, call
+QHeaderView::resizeSection() on the table's horizontal header.
+If you reimplement this function in a subclass, note that the value you
+return will be used when resizeColumnToContents() or
+QHeaderView::resizeSections() is called. If a larger column width is
+required by either the horizontal header or the item delegate, the larger
+width will be used instead.
+\sa QWidget::sizeHint, horizontalHeader()
+*/
+int QTableView::sizeHintForColumn(int column) const
+{
+Q_D(const QTableView);
+if (!model())
+return -1;
+int top = qMax(0, rowAt(0));
+int bottom = rowAt(d->viewport->height());
+if (!isVisible() || bottom == -1) // the table don't have enough rows to fill the viewport
+bottom = d->model->rowCount(d->root) - 1;
+QStyleOptionViewItemV4 option = d->viewOptionsV4();
+int hint = 0;
+QModelIndex index;
+for (int row = top; row <= bottom; ++row) {
+int logicalRow = d->verticalHeader->logicalIndex(row);
+if (d->verticalHeader->isSectionHidden(logicalRow))
+continue;
+index = d->model->index(logicalRow, column, d->root);
+QWidget *editor = d->editorForIndex(index).editor;
+if (editor && d->persistent.contains(editor)) {
+hint = qMax(hint, editor->sizeHint().width());
+int min = editor->minimumSize().width();
+int max = editor->maximumSize().width();
+hint = qBound(min, hint, max);
+}
+hint = qMax(hint, itemDelegate(index)->sizeHint(option, index).width());
+}
+return d->showGrid ? hint + 1 : hint;
+}
+/*!
+Returns the y-coordinate in contents coordinates of the given \a
+row.
+*/
+int QTableView::rowViewportPosition(int row) const
+{
+Q_D(const QTableView);
+return d->verticalHeader->sectionViewportPosition(row);
+}
+/*!
+Returns the row in which the given y-coordinate, \a y, in contents
+coordinates is located.
+\note This function returns -1 if the given coordinate is not valid
+(has no row).
+\sa columnAt()
+*/
+int QTableView::rowAt(int y) const
+{
+Q_D(const QTableView);
+return d->verticalHeader->logicalIndexAt(y);
+}
+/*!
+\since 4.1
+Sets the height of the given \a row to be \a height.
+*/
+void QTableView::setRowHeight(int row, int height)
+{
+Q_D(const QTableView);
+d->verticalHeader->resizeSection(row, height);
+}
+/*!
+Returns the height of the given \a row.
+\sa resizeRowToContents(), columnWidth()
+*/
+int QTableView::rowHeight(int row) const
+{
+Q_D(const QTableView);
+return d->verticalHeader->sectionSize(row);
+}
+/*!
+Returns the x-coordinate in contents coordinates of the given \a
+column.
+*/
+int QTableView::columnViewportPosition(int column) const
+{
+Q_D(const QTableView);
+return d->horizontalHeader->sectionViewportPosition(column);
+}
+/*!
+Returns the column in which the given x-coordinate, \a x, in contents
+coordinates is located.
+\note This function returns -1 if the given coordinate is not valid
+(has no column).
+\sa rowAt()
+*/
+int QTableView::columnAt(int x) const
+{
+Q_D(const QTableView);
+return d->horizontalHeader->logicalIndexAt(x);
+}
+/*!
+\since 4.1
+Sets the width of the given \a column to be \a width.
+*/
+void QTableView::setColumnWidth(int column, int width)
+{
+Q_D(const QTableView);
+d->horizontalHeader->resizeSection(column, width);
+}
+/*!
+Returns the width of the given \a column.
+\sa resizeColumnToContents(), rowHeight()
+*/
+int QTableView::columnWidth(int column) const
+{
+Q_D(const QTableView);
+return d->horizontalHeader->sectionSize(column);
+}
+/*!
+Returns true if the given \a row is hidden; otherwise returns false.
+\sa isColumnHidden()
+*/
+bool QTableView::isRowHidden(int row) const
+{
+Q_D(const QTableView);
+return d->verticalHeader->isSectionHidden(row);
+}
+/*!
+If \a hide is true \a row will be hidden, otherwise it will be shown.
+\sa setColumnHidden()
+*/
+void QTableView::setRowHidden(int row, bool hide)
+{
+Q_D(QTableView);
+if (row < 0 || row >= d->verticalHeader->count())
+return;
+d->verticalHeader->setSectionHidden(row, hide);
+}
+/*!
+Returns true if the given \a column is hidden; otherwise returns false.
+\sa isRowHidden()
+*/
+bool QTableView::isColumnHidden(int column) const
+{
+Q_D(const QTableView);
+return d->horizontalHeader->isSectionHidden(column);
+}
+/*!
+If \a hide is true the given \a column will be hidden; otherwise it
+will be shown.
+\sa setRowHidden()
+*/
+void QTableView::setColumnHidden(int column, bool hide)
+{
+Q_D(QTableView);
+if (column < 0 || column >= d->horizontalHeader->count())
+return;
+d->horizontalHeader->setSectionHidden(column, hide);
+}
+/*!
+\since 4.2
+\property QTableView::sortingEnabled
+\brief whether sorting is enabled
+If this property is true, sorting is enabled for the table; if the
+property is false, sorting is not enabled. The default value is false.
+\sa sortByColumn()
+*/
+void QTableView::setSortingEnabled(bool enable)
+{
+Q_D(QTableView);
+d->sortingEnabled = enable;
+horizontalHeader()->setSortIndicatorShown(enable);
+if (enable) {
+disconnect(d->horizontalHeader, SIGNAL(sectionEntered(int)),
+this, SLOT(_q_selectColumn(int)));
+disconnect(horizontalHeader(), SIGNAL(sectionPressed(int)),
+this, SLOT(selectColumn(int)));
+connect(horizontalHeader(), SIGNAL(sortIndicatorChanged(int,Qt::SortOrder)),
+this, SLOT(sortByColumn(int)), Qt::UniqueConnection);
+sortByColumn(horizontalHeader()->sortIndicatorSection(),
+horizontalHeader()->sortIndicatorOrder());
+} else {
+connect(d->horizontalHeader, SIGNAL(sectionEntered(int)),
+this, SLOT(_q_selectColumn(int)), Qt::UniqueConnection);
+connect(horizontalHeader(), SIGNAL(sectionPressed(int)),
+this, SLOT(selectColumn(int)), Qt::UniqueConnection);
+disconnect(horizontalHeader(), SIGNAL(sortIndicatorChanged(int,Qt::SortOrder)),
+this, SLOT(sortByColumn(int)));
+}
+}
+bool QTableView::isSortingEnabled() const
+{
+Q_D(const QTableView);
+return d->sortingEnabled;
+}
+/*!
+\property QTableView::showGrid
+\brief whether the grid is shown
+If this property is true a grid is drawn for the table; if the
+property is false, no grid is drawn. The default value is true.
+*/
+bool QTableView::showGrid() const
+{
+Q_D(const QTableView);
+return d->showGrid;
+}
+void QTableView::setShowGrid(bool show)
+{
+Q_D(QTableView);
+if (d->showGrid != show) {
+d->showGrid = show;
+d->viewport->update();
+}
+}
+/*!
+\property QTableView::gridStyle
+\brief  the pen style used to draw the grid.
+This property holds the style used when drawing the grid (see \l{showGrid}).
+*/
+Qt::PenStyle QTableView::gridStyle() const
+{
+Q_D(const QTableView);
+return d->gridStyle;
+}
+void QTableView::setGridStyle(Qt::PenStyle style)
+{
+Q_D(QTableView);
+if (d->gridStyle != style) {
+d->gridStyle = style;
+d->viewport->update();
+}
+}
+/*!
+\property QTableView::wordWrap
+\brief the item text word-wrapping policy
+\since 4.3
+If this property is true then the item text is wrapped where
+necessary at word-breaks; otherwise it is not wrapped at all.
+This property is true by default.
+Note that even of wrapping is enabled, the cell will not be
+expanded to fit all text. Ellipsis will be inserted according to
+the current \l{QAbstractItemView::}{textElideMode}.
+*/
+void QTableView::setWordWrap(bool on)
+{
+Q_D(QTableView);
+if (d->wrapItemText == on)
+return;
+d->wrapItemText = on;
+QMetaObject::invokeMethod(d->verticalHeader, "resizeSections");
+QMetaObject::invokeMethod(d->horizontalHeader, "resizeSections");
+}
+bool QTableView::wordWrap() const
+{
+Q_D(const QTableView);
+return d->wrapItemText;
+}
+/*!
+\property QTableView::cornerButtonEnabled
+\brief whether the button in the top-left corner is enabled
+\since 4.3
+If this property is true then button in the top-left corner
+of the table view is enabled. Clicking on this button will
+select all the cells in the table view.
+This property is true by default.
+*/
+void QTableView::setCornerButtonEnabled(bool enable)
+{
+Q_D(QTableView);
+d->cornerWidget->setEnabled(enable);
+}
+bool QTableView::isCornerButtonEnabled() const
+{
+Q_D(const QTableView);
+return d->cornerWidget->isEnabled();
+}
+/*!
+\internal
+Returns the rectangle on the viewport occupied by the given \a
+index.
+If the index is hidden in the view it will return a null QRect.
+*/
+QRect QTableView::visualRect(const QModelIndex &index) const
+{
+Q_D(const QTableView);
+if (!d->isIndexValid(index) || index.parent() != d->root
+|| (!d->hasSpans() && isIndexHidden(index)))
+return QRect();
+d->executePostedLayout();
+if (d->hasSpans()) {
+QSpanCollection::Span span = d->span(index.row(), index.column());
+return d->visualSpanRect(span);
+}
+int rowp = rowViewportPosition(index.row());
+int rowh = rowHeight(index.row());
+int colp = columnViewportPosition(index.column());
+int colw = columnWidth(index.column());
+const int i = showGrid() ? 1 : 0;
+return QRect(colp, rowp, colw - i, rowh - i);
+}
+/*!
+\internal
+Makes sure that the given \a item is visible in the table view,
+scrolling if necessary.
+*/
+void QTableView::scrollTo(const QModelIndex &index, ScrollHint hint)
+{
+Q_D(QTableView);
+// check if we really need to do anything
+if (!d->isIndexValid(index)
+|| (d->model->parent(index) != d->root)
+|| isIndexHidden(index))
+return;
+QSpanCollection::Span span;
+if (d->hasSpans())
+span = d->span(index.row(), index.column());
+// Adjust horizontal position
+int viewportWidth = d->viewport->width();
+int horizontalOffset = d->horizontalHeader->offset();
+int horizontalPosition = d->horizontalHeader->sectionPosition(index.column());
+int horizontalIndex = d->horizontalHeader->visualIndex(index.column());
+int cellWidth = d->hasSpans()
+? d->columnSpanWidth(index.column(), span.width())
+: d->horizontalHeader->sectionSize(index.column());
+if (horizontalScrollMode() == QAbstractItemView::ScrollPerItem) {
+bool positionAtLeft = (horizontalPosition - horizontalOffset < 0);
+bool positionAtRight = (horizontalPosition - horizontalOffset + cellWidth > viewportWidth);
+if (hint == PositionAtCenter || positionAtRight) {
+int w = (hint == PositionAtCenter ? viewportWidth / 2 : viewportWidth);
+int x = cellWidth;
+while (horizontalIndex > 0) {
+x += columnWidth(d->horizontalHeader->logicalIndex(horizontalIndex-1));
+if (x > w)
+break;
+--horizontalIndex;
+}
+}
+if (positionAtRight || hint == PositionAtCenter || positionAtLeft) {
+int hiddenSections = 0;
+if (d->horizontalHeader->sectionsHidden()) {
+for (int s = horizontalIndex - 1; s >= 0; --s) {
+int column = d->horizontalHeader->logicalIndex(s);
+if (d->horizontalHeader->isSectionHidden(column))
+++hiddenSections;
+}
+}
+horizontalScrollBar()->setValue(horizontalIndex - hiddenSections);
+}
+} else { // ScrollPerPixel
+if (hint == PositionAtCenter) {
+horizontalScrollBar()->setValue(horizontalPosition - ((viewportWidth - cellWidth) / 2));
+} else {
+if (horizontalPosition - horizontalOffset < 0 || cellWidth > viewportWidth)
+horizontalScrollBar()->setValue(horizontalPosition);
+else if (horizontalPosition - horizontalOffset + cellWidth > viewportWidth)
+horizontalScrollBar()->setValue(horizontalPosition - viewportWidth + cellWidth);
+}
+}
+// Adjust vertical position
+int viewportHeight = d->viewport->height();
+int verticalOffset = d->verticalHeader->offset();
+int verticalPosition = d->verticalHeader->sectionPosition(index.row());
+int verticalIndex = d->verticalHeader->visualIndex(index.row());
+int cellHeight = d->hasSpans()
+? d->rowSpanHeight(index.row(), span.height())
+: d->verticalHeader->sectionSize(index.row());
+if (verticalPosition - verticalOffset < 0 || cellHeight > viewportHeight) {
+if (hint == EnsureVisible)
+hint = PositionAtTop;
+} else if (verticalPosition - verticalOffset + cellHeight > viewportHeight) {
+if (hint == EnsureVisible)
+hint = PositionAtBottom;
+}
+if (verticalScrollMode() == QAbstractItemView::ScrollPerItem) {
+if (hint == PositionAtBottom || hint == PositionAtCenter) {
+int h = (hint == PositionAtCenter ? viewportHeight / 2 : viewportHeight);
+int y = cellHeight;
+while (verticalIndex > 0) {
+int row = d->verticalHeader->logicalIndex(verticalIndex - 1);
+y += d->verticalHeader->sectionSize(row);
+if (y > h)
+break;
+--verticalIndex;
+}
+}
+if (hint == PositionAtBottom || hint == PositionAtCenter || hint == PositionAtTop) {
+int hiddenSections = 0;
+if (d->verticalHeader->sectionsHidden()) {
+for (int s = verticalIndex - 1; s >= 0; --s) {
+int row = d->verticalHeader->logicalIndex(s);
+if (d->verticalHeader->isSectionHidden(row))
+++hiddenSections;
+}
+}
+verticalScrollBar()->setValue(verticalIndex - hiddenSections);
+}
+} else { // ScrollPerPixel
+if (hint == PositionAtTop) {
+verticalScrollBar()->setValue(verticalPosition);
+} else if (hint == PositionAtBottom) {
+verticalScrollBar()->setValue(verticalPosition - viewportHeight + cellHeight);
+} else if (hint == PositionAtCenter) {
+verticalScrollBar()->setValue(verticalPosition - ((viewportHeight - cellHeight) / 2));
+}
+}
+update(index);
+}
+/*!
+This slot is called to change the height of the given \a row. The
+old height is specified by \a oldHeight, and the new height by \a
+newHeight.
+\sa columnResized()
+*/
+void QTableView::rowResized(int row, int, int)
+{
+Q_D(QTableView);
+d->rowsToUpdate.append(row);
+if (d->rowResizeTimerID == 0)
+d->rowResizeTimerID = startTimer(0);
+}
+/*!
+This slot is called to change the width of the given \a column.
+The old width is specified by \a oldWidth, and the new width by \a
+newWidth.
+\sa rowResized()
+*/
+void QTableView::columnResized(int column, int, int)
+{
+Q_D(QTableView);
+d->columnsToUpdate.append(column);
+if (d->columnResizeTimerID == 0)
+d->columnResizeTimerID = startTimer(0);
+}
+/*!
+\reimp
+*/
+void QTableView::timerEvent(QTimerEvent *event)
+{
+Q_D(QTableView);
+if (event->timerId() == d->columnResizeTimerID) {
+updateGeometries();
+killTimer(d->columnResizeTimerID);
+d->columnResizeTimerID = 0;
+QRect rect;
+int viewportHeight = d->viewport->height();
+int viewportWidth = d->viewport->width();
+if (d->hasSpans()) {
+rect = QRect(0, 0, viewportWidth, viewportHeight);
+} else {
+for (int i = d->columnsToUpdate.size()-1; i >= 0; --i) {
+int column = d->columnsToUpdate.at(i);
+int x = columnViewportPosition(column);
+if (isRightToLeft())
+rect |= QRect(0, 0, x + columnWidth(column), viewportHeight);
+else
+rect |= QRect(x, 0, viewportWidth - x, viewportHeight);
+}
+}
+d->viewport->update(rect.normalized());
+d->columnsToUpdate.clear();
+}
+if (event->timerId() == d->rowResizeTimerID) {
+updateGeometries();
+killTimer(d->rowResizeTimerID);
+d->rowResizeTimerID = 0;
+int viewportHeight = d->viewport->height();
+int viewportWidth = d->viewport->width();
+int top;
+if (d->hasSpans()) {
+top = 0;
+} else {
+top = viewportHeight;
+for (int i = d->rowsToUpdate.size()-1; i >= 0; --i) {
+int y = rowViewportPosition(d->rowsToUpdate.at(i));
+top = qMin(top, y);
+}
+}
+d->viewport->update(QRect(0, top, viewportWidth, viewportHeight - top));
+d->rowsToUpdate.clear();
+}
+QAbstractItemView::timerEvent(event);
+}
+/*!
+This slot is called to change the index of the given \a row in the
+table view. The old index is specified by \a oldIndex, and the new
+index by \a newIndex.
+\sa columnMoved()
+*/
+void QTableView::rowMoved(int, int oldIndex, int newIndex)
+{
+Q_D(QTableView);
+updateGeometries();
+int logicalOldIndex = d->verticalHeader->logicalIndex(oldIndex);
+int logicalNewIndex = d->verticalHeader->logicalIndex(newIndex);
+if (d->hasSpans()) {
+d->viewport->update();
+} else {
+int oldTop = rowViewportPosition(logicalOldIndex);
+int newTop = rowViewportPosition(logicalNewIndex);
+int oldBottom = oldTop + rowHeight(logicalOldIndex);
+int newBottom = newTop + rowHeight(logicalNewIndex);
+int top = qMin(oldTop, newTop);
+int bottom = qMax(oldBottom, newBottom);
+int height = bottom - top;
+d->viewport->update(0, top, d->viewport->width(), height);
+}
+}
+/*!
+This slot is called to change the index of the given \a column in
+the table view. The old index is specified by \a oldIndex, and
+the new index by \a newIndex.
+\sa rowMoved()
+*/
+void QTableView::columnMoved(int, int oldIndex, int newIndex)
+{
+Q_D(QTableView);
+updateGeometries();
+int logicalOldIndex = d->horizontalHeader->logicalIndex(oldIndex);
+int logicalNewIndex = d->horizontalHeader->logicalIndex(newIndex);
+if (d->hasSpans()) {
+d->viewport->update();
+} else {
+int oldLeft = columnViewportPosition(logicalOldIndex);
+int newLeft = columnViewportPosition(logicalNewIndex);
+int oldRight = oldLeft + columnWidth(logicalOldIndex);
+int newRight = newLeft + columnWidth(logicalNewIndex);
+int left = qMin(oldLeft, newLeft);
+int right = qMax(oldRight, newRight);
+int width = right - left;
+d->viewport->update(left, 0, width, d->viewport->height());
+}
+}
+/*!
+Selects the given \a row in the table view if the current
+SelectionMode and SelectionBehavior allows rows to be selected.
+\sa selectColumn()
+*/
+void QTableView::selectRow(int row)
+{
+Q_D(QTableView);
+d->selectRow(row, true);
+}
+/*!
+Selects the given \a column in the table view if the current
+SelectionMode and SelectionBehavior allows columns to be selected.
+\sa selectRow()
+*/
+void QTableView::selectColumn(int column)
+{
+Q_D(QTableView);
+d->selectColumn(column, true);
+}
+/*!
+Hide the given \a row.
+\sa showRow() hideColumn()
+*/
+void QTableView::hideRow(int row)
+{
+Q_D(QTableView);
+d->verticalHeader->hideSection(row);
+}
+/*!
+Hide the given \a column.
+\sa showColumn() hideRow()
+*/
+void QTableView::hideColumn(int column)
+{
+Q_D(QTableView);
+d->horizontalHeader->hideSection(column);
+}
+/*!
+Show the given \a row.
+\sa hideRow() showColumn()
+*/
+void QTableView::showRow(int row)
+{
+Q_D(QTableView);
+d->verticalHeader->showSection(row);
+}
+/*!
+Show the given \a column.
+\sa hideColumn() showRow()
+*/
+void QTableView::showColumn(int column)
+{
+Q_D(QTableView);
+d->horizontalHeader->showSection(column);
+}
+/*!
+Resizes the given \a row based on the size hints of the delegate
+used to render each item in the row.
+*/
+void QTableView::resizeRowToContents(int row)
+{
+Q_D(QTableView);
+int content = sizeHintForRow(row);
+int header = d->verticalHeader->sectionSizeHint(row);
+d->verticalHeader->resizeSection(row, qMax(content, header));
+}
+/*!
+Resizes all rows based on the size hints of the delegate
+used to render each item in the rows.
+*/
+void QTableView::resizeRowsToContents()
+{
+Q_D(QTableView);
+d->verticalHeader->resizeSections(QHeaderView::ResizeToContents);
+}
+/*!
+Resizes the given \a column based on the size hints of the delegate
+used to render each item in the column.
+\note Only visible columns will be resized. Reimplement sizeHintForColumn()
+to resize hidden columns as well.
+*/
+void QTableView::resizeColumnToContents(int column)
+{
+Q_D(QTableView);
+int content = sizeHintForColumn(column);
+int header = d->horizontalHeader->sectionSizeHint(column);
+d->horizontalHeader->resizeSection(column, qMax(content, header));
+}
+/*!
+Resizes all columns based on the size hints of the delegate
+used to render each item in the columns.
+*/
+void QTableView::resizeColumnsToContents()
+{
+Q_D(QTableView);
+d->horizontalHeader->resizeSections(QHeaderView::ResizeToContents);
+}
+/*!
+\obsolete
+\overload
+Sorts the model by the values in the given \a column.
+*/
+void QTableView::sortByColumn(int column)
+{
+Q_D(QTableView);
+if (column == -1)
+return;
+d->model->sort(column, d->horizontalHeader->sortIndicatorOrder());
+}
+/*!
+\since 4.2
+Sorts the model by the values in the given \a column in the given \a order.
+\sa sortingEnabled
+*/
+void QTableView::sortByColumn(int column, Qt::SortOrder order)
+{
+Q_D(QTableView);
+d->horizontalHeader->setSortIndicator(column, order);
+sortByColumn(column);
+}
+/*!
+\internal
+*/
+void QTableView::verticalScrollbarAction(int action)
+{
+QAbstractItemView::verticalScrollbarAction(action);
+}
+/*!
+\internal
+*/
+void QTableView::horizontalScrollbarAction(int action)
+{
+QAbstractItemView::horizontalScrollbarAction(action);
+}
+/*!
+\reimp
+*/
+bool QTableView::isIndexHidden(const QModelIndex &index) const
+{
+Q_D(const QTableView);
+Q_ASSERT(d->isIndexValid(index));
+if (isRowHidden(index.row()) || isColumnHidden(index.column()))
+return true;
+if (d->hasSpans()) {
+QSpanCollection::Span span = d->span(index.row(), index.column());
+return !((span.top() == index.row()) && (span.left() == index.column()));
+}
+return false;
+}
+/*!
+\fn void QTableView::setSpan(int row, int column, int rowSpanCount, int columnSpanCount)
+\since 4.2
+Sets the span of the table element at (\a row, \a column) to the number of
+rows and columns specified by (\a rowSpanCount, \a columnSpanCount).
+\sa rowSpan(), columnSpan()
+*/
+void QTableView::setSpan(int row, int column, int rowSpan, int columnSpan)
+{
+Q_D(QTableView);
+if (row < 0 || column < 0 || rowSpan < 0 || columnSpan < 0)
+return;
+d->setSpan(row, column, rowSpan, columnSpan);
+d->viewport->update();
+}
+/*!
+\since 4.2
+Returns the row span of the table element at (\a row, \a column).
+The default is 1.
+\sa setSpan(), columnSpan()
+*/
+int QTableView::rowSpan(int row, int column) const
+{
+Q_D(const QTableView);
+return d->rowSpan(row, column);
+}
+/*!
+\since 4.2
+Returns the column span of the table element at (\a row, \a
+column). The default is 1.
+\sa setSpan(), rowSpan()
+*/
+int QTableView::columnSpan(int row, int column) const
+{
+Q_D(const QTableView);
+return d->columnSpan(row, column);
+}
+/*!
+\since 4.4
+Removes all row and column spans in the table view.
+\sa setSpan()
+*/
+void QTableView::clearSpans()
+{
+Q_D(QTableView);
+d->spans.clear();
+d->viewport->update();
+}
+void QTableViewPrivate::_q_selectRow(int row)
+{
+selectRow(row, false);
+}
+void QTableViewPrivate::_q_selectColumn(int column)
+{
+selectColumn(column, false);
+}
+void QTableViewPrivate::selectRow(int row, bool anchor)
+{
+Q_Q(QTableView);
+if (q->selectionBehavior() == QTableView::SelectColumns
+|| (q->selectionMode() == QTableView::SingleSelection
+&& q->selectionBehavior() == QTableView::SelectItems))
+return;
+if (row >= 0 && row < model->rowCount(root)) {
+int column = horizontalHeader->logicalIndexAt(q->isRightToLeft() ? viewport->width() : 0);
+QModelIndex index = model->index(row, column, root);
+QItemSelectionModel::SelectionFlags command = q->selectionCommand(index);
+selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
+if ((anchor && !(command & QItemSelectionModel::Current))
+|| (q->selectionMode() == QTableView::SingleSelection))
+rowSectionAnchor = row;
+if (q->selectionMode() != QTableView::SingleSelection
+&& command.testFlag(QItemSelectionModel::Toggle)) {
+if (anchor)
+ctrlDragSelectionFlag = verticalHeader->selectionModel()->selectedRows().contains(index)
+? QItemSelectionModel::Deselect : QItemSelectionModel::Select;
+command &= ~QItemSelectionModel::Toggle;
+command |= ctrlDragSelectionFlag;
+if (!anchor)
+command |= QItemSelectionModel::Current;
+}
+QModelIndex tl = model->index(qMin(rowSectionAnchor, row), 0, root);
+QModelIndex br = model->index(qMax(rowSectionAnchor, row), model->columnCount(root) - 1, root);
+if (verticalHeader->sectionsMoved() && tl.row() != br.row())
+q->setSelection(q->visualRect(tl)|q->visualRect(br), command);
+else
+selectionModel->select(QItemSelection(tl, br), command);
+}
+}
+void QTableViewPrivate::selectColumn(int column, bool anchor)
+{
+Q_Q(QTableView);
+if (q->selectionBehavior() == QTableView::SelectRows
+|| (q->selectionMode() == QTableView::SingleSelection
+&& q->selectionBehavior() == QTableView::SelectItems))
+return;
+if (column >= 0 && column < model->columnCount(root)) {
+int row = verticalHeader->logicalIndexAt(0);
+QModelIndex index = model->index(row, column, root);
+QItemSelectionModel::SelectionFlags command = q->selectionCommand(index);
+selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
+if ((anchor && !(command & QItemSelectionModel::Current))
+|| (q->selectionMode() == QTableView::SingleSelection))
+columnSectionAnchor = column;
+if (q->selectionMode() != QTableView::SingleSelection
+&& command.testFlag(QItemSelectionModel::Toggle)) {
+if (anchor)
+ctrlDragSelectionFlag = horizontalHeader->selectionModel()->selectedColumns().contains(index)
+? QItemSelectionModel::Deselect : QItemSelectionModel::Select;
+command &= ~QItemSelectionModel::Toggle;
+command |= ctrlDragSelectionFlag;
+if (!anchor)
+command |= QItemSelectionModel::Current;
+}
+QModelIndex tl = model->index(0, qMin(columnSectionAnchor, column), root);
+QModelIndex br = model->index(model->rowCount(root) - 1,
+qMax(columnSectionAnchor, column), root);
+if (horizontalHeader->sectionsMoved() && tl.column() != br.column())
+q->setSelection(q->visualRect(tl)|q->visualRect(br), command);
+else
+selectionModel->select(QItemSelection(tl, br), command);
+}
+}
+/*!
+\reimp
+*/
+void QTableView::currentChanged(const QModelIndex &current, const QModelIndex &previous)
+{
+#ifndef QT_NO_ACCESSIBILITY
+if (QAccessible::isActive()) {
+if (current.isValid()) {
+int entry = visualIndex(current) + 1;
+if (horizontalHeader())
+++entry;
+QAccessible::updateAccessibility(viewport(), entry, QAccessible::Focus);
+}
+}
+#endif
+QAbstractItemView::currentChanged(current, previous);
+}
+/*!
+\reimp
+*/
+void QTableView::selectionChanged(const QItemSelection &selected,
+const QItemSelection &deselected)
+{
+#ifndef QT_NO_ACCESSIBILITY
+if (QAccessible::isActive()) {
+// ### does not work properly for selection ranges.
+QModelIndex sel = selected.indexes().value(0);
+if (sel.isValid()) {
+int entry = visualIndex(sel);
+if (horizontalHeader())
+++entry;
+QAccessible::updateAccessibility(viewport(), entry, QAccessible::Selection);
+}
+QModelIndex desel = deselected.indexes().value(0);
+if (desel.isValid()) {
+int entry = visualIndex(sel);
+if (horizontalHeader())
+++entry;
+QAccessible::updateAccessibility(viewport(), entry, QAccessible::SelectionRemove);
+}
+}
+#endif
+QAbstractItemView::selectionChanged(selected, deselected);
+}
+int QTableView::visualIndex(const QModelIndex &index) const
+{
+return index.row();
+}
+QT_END_NAMESPACE
+#include "qtableview.moc"
+#include "moc_qtableview.cpp"
+#endif // QT_NO_TABLEVIEW

changeset 0	1918ee327afb
child 3	41300fa6a67c