diff options
Diffstat (limited to 'src/widgets/itemviews/qtableview.cpp')
| -rw-r--r-- | src/widgets/itemviews/qtableview.cpp | 223 |
1 files changed, 172 insertions, 51 deletions
diff --git a/src/widgets/itemviews/qtableview.cpp b/src/widgets/itemviews/qtableview.cpp index a6623b9462..871ad656ea 100644 --- a/src/widgets/itemviews/qtableview.cpp +++ b/src/widgets/itemviews/qtableview.cpp @@ -931,6 +931,59 @@ void QTableViewPrivate::drawCell(QPainter *painter, const QStyleOptionViewItem & } /*! + \internal + Get sizeHint width for single Index (providing existing hint and style option) +*/ +int QTableViewPrivate::widthHintForIndex(const QModelIndex &index, int hint, const QStyleOptionViewItem &option) const +{ + Q_Q(const QTableView); + QWidget *editor = editorForIndex(index).widget.data(); + if (editor && 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, q->itemDelegate(index)->sizeHint(option, index).width()); + return hint; +} + +/*! + \internal + Get sizeHint height for single Index (providing existing hint and style option) +*/ +int QTableViewPrivate::heightHintForIndex(const QModelIndex &index, int hint, QStyleOptionViewItem &option) const +{ + Q_Q(const QTableView); + QWidget *editor = editorForIndex(index).widget.data(); + if (editor && persistent.contains(editor)) { + hint = qMax(hint, editor->sizeHint().height()); + int min = editor->minimumSize().height(); + int max = editor->maximumSize().height(); + hint = qBound(min, hint, max); + } + + if (wrapItemText) {// for wrapping boundaries + option.rect.setY(q->rowViewportPosition(index.row())); + int height = q->rowHeight(index.row()); + // if the option.height == 0 then q->itemDelegate(index)->sizeHint(option, index) will be wrong. + // The option.height == 0 is used to conclude that the text is not wrapped, and hence it will + // (exactly like widthHintForIndex) return a QSize with a long width (that we don't use) - + // and the height of the text if it was/is on one line. + // What we want is a height hint for the current width (and we know that this section is not hidden) + // Therefore we catch this special situation with: + if (height == 0) + height = 1; + option.rect.setHeight(height); + option.rect.setX(q->columnViewportPosition(index.column())); + option.rect.setWidth(q->columnWidth(index.column())); + } + hint = qMax(hint, q->itemDelegate(index)->sizeHint(option, index).height()); + return hint; +} + + +/*! \class QTableView \brief The QTableView class provides a default model/view @@ -1056,6 +1109,19 @@ QTableView::~QTableView() /*! \reimp */ +QSize QTableView::viewportSizeHint() const +{ + Q_D(const QTableView); + QSize result( (d->verticalHeader->isHidden() ? 0 : d->verticalHeader->width()) + d->horizontalHeader->length(), + (d->horizontalHeader->isHidden() ? 0 : d->horizontalHeader->height()) + d->verticalHeader->length()); + result += QSize(verticalScrollBar()->isVisible() ? verticalScrollBar()->width() : 0, + horizontalScrollBar()->isVisible() ? horizontalScrollBar()->height() : 0); + return result; +} + +/*! + \reimp +*/ void QTableView::setModel(QAbstractItemModel *model) { Q_D(QTableView); @@ -1113,15 +1179,7 @@ void QTableView::doItemsLayout() { Q_D(QTableView); QAbstractItemView::doItemsLayout(); - if (verticalScrollMode() == QAbstractItemView::ScrollPerItem) { - const int max = verticalScrollBar()->maximum(); - if (max > 0 && verticalScrollBar()->value() == max) - d->verticalHeader->setOffsetToLastSection(); - else - d->verticalHeader->setOffsetToSectionPosition(verticalScrollBar()->value()); - } else { - d->verticalHeader->setOffset(verticalScrollBar()->value()); - } + d->verticalHeader->d_func()->setScrollOffset(verticalScrollBar(), verticalScrollMode()); if (!d->verticalHeader->updatesEnabled()) d->verticalHeader->setUpdatesEnabled(true); } @@ -1258,29 +1316,19 @@ void QTableView::scrollContentsBy(int dx, int dy) dx = isRightToLeft() ? -dx : dx; if (dx) { + int oldOffset = d->horizontalHeader->offset(); + d->horizontalHeader->d_func()->setScrollOffset(horizontalScrollBar(), horizontalScrollMode()); 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) { + int oldOffset = d->verticalHeader->offset(); + d->verticalHeader->d_func()->setScrollOffset(verticalScrollBar(), verticalScrollMode()); 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); @@ -1760,13 +1808,13 @@ QModelIndex QTableView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifi visualRow = bottom; break; case MovePageUp: { - int newRow = rowAt(visualRect(current).top() - d->viewport->height()); + int newRow = rowAt(visualRect(current).bottom() - 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()); + int newRow = rowAt(visualRect(current).top() + d->viewport->height()); if (newRow == -1) newRow = d->logicalRow(bottom); return d->model->index(newRow, current.column(), d->root); @@ -2128,7 +2176,7 @@ void QTableView::updateGeometries() } else { // ScrollPerPixel horizontalScrollBar()->setPageStep(vsize.width()); horizontalScrollBar()->setRange(0, horizontalLength - vsize.width()); - horizontalScrollBar()->setSingleStep(qMax(vsize.width() / (columnsInViewport + 1), 2)); + // here we do not want to overwrite (a possible user set) single step } // vertical scroll bar @@ -2156,7 +2204,7 @@ void QTableView::updateGeometries() } else { // ScrollPerPixel verticalScrollBar()->setPageStep(vsize.height()); verticalScrollBar()->setRange(0, verticalLength - vsize.height()); - verticalScrollBar()->setSingleStep(qMax(vsize.height() / (rowsInViewport + 1), 2)); + // here we do not want to overwrite (a possible user set) single step } d->geometryRecursionBlock = false; @@ -2175,7 +2223,7 @@ void QTableView::updateGeometries() 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() + \sa QWidget::sizeHint, verticalHeader(), QHeaderView::resizeContentsPrecision() */ int QTableView::sizeHintForRow(int row) const { @@ -2185,6 +2233,8 @@ int QTableView::sizeHintForRow(int row) const return -1; ensurePolished(); + const int maximumProcessCols = d->verticalHeader->resizeContentsPrecision(); + int left = qMax(0, d->horizontalHeader->visualIndexAt(0)); int right = d->horizontalHeader->visualIndexAt(d->viewport->width()); @@ -2195,27 +2245,55 @@ int QTableView::sizeHintForRow(int row) const int hint = 0; QModelIndex index; - for (int column = left; column <= right; ++column) { + int columnsProcessed = 0; + int column = left; + for (; 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())); - } + hint = d->heightHintForIndex(index, hint, option); + + ++columnsProcessed; + if (columnsProcessed == maximumProcessCols) + break; + } - QWidget *editor = d->editorForIndex(index).widget.data(); - 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); + int actualRight = d->model->columnCount(d->root) - 1; + int idxLeft = left; + int idxRight = column - 1; + + if (maximumProcessCols == 0) + columnsProcessed = 0; // skip the while loop + + while (columnsProcessed != maximumProcessCols && (idxLeft > 0 || idxRight < actualRight)) { + int logicalIdx = -1; + + if ((columnsProcessed % 2 && idxLeft > 0) || idxRight == actualRight) { + while (idxLeft > 0) { + --idxLeft; + int logcol = d->horizontalHeader->logicalIndex(idxLeft); + if (d->horizontalHeader->isSectionHidden(logcol)) + continue; + logicalIdx = logcol; + break; + } + } else { + while (idxRight < actualRight) { + ++idxRight; + int logcol = d->horizontalHeader->logicalIndex(idxRight); + if (d->horizontalHeader->isSectionHidden(logcol)) + continue; + logicalIdx = logcol; + break; + } } + if (logicalIdx < 0) + continue; - hint = qMax(hint, itemDelegate(index)->sizeHint(option, index).height()); + index = d->model->index(row, logicalIdx, d->root); + hint = d->heightHintForIndex(index, hint, option); + ++columnsProcessed; } return d->showGrid ? hint + 1 : hint; @@ -2234,7 +2312,7 @@ int QTableView::sizeHintForRow(int row) const required by either the horizontal header or the item delegate, the larger width will be used instead. - \sa QWidget::sizeHint, horizontalHeader() + \sa QWidget::sizeHint, horizontalHeader(), QHeaderView::resizeContentsPrecision() */ int QTableView::sizeHintForColumn(int column) const { @@ -2244,6 +2322,7 @@ int QTableView::sizeHintForColumn(int column) const return -1; ensurePolished(); + const int maximumProcessRows = d->horizontalHeader->resizeContentsPrecision(); int top = qMax(0, d->verticalHeader->visualIndexAt(0)); int bottom = d->verticalHeader->visualIndexAt(d->viewport->height()); @@ -2253,22 +2332,56 @@ int QTableView::sizeHintForColumn(int column) const QStyleOptionViewItem option = d->viewOptions(); int hint = 0; + int rowsProcessed = 0; QModelIndex index; - for (int row = top; row <= bottom; ++row) { + int row = top; + for (; 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).widget.data(); - 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 = d->widthHintForIndex(index, hint, option); + ++rowsProcessed; + if (rowsProcessed == maximumProcessRows) + break; + } + + int actualBottom = d->model->rowCount(d->root) - 1; + int idxTop = top; + int idxBottom = row - 1; + + if (maximumProcessRows == 0) + rowsProcessed = 0; // skip the while loop + + while (rowsProcessed != maximumProcessRows && (idxTop > 0 || idxBottom < actualBottom)) { + int logicalIdx = -1; + + if ((rowsProcessed % 2 && idxTop > 0) || idxBottom == actualBottom) { + while (idxTop > 0) { + --idxTop; + int logrow = d->verticalHeader->logicalIndex(idxTop); + if (d->verticalHeader->isSectionHidden(logrow)) + continue; + logicalIdx = logrow; + break; + } + } else { + while (idxBottom < actualBottom) { + ++idxBottom; + int logrow = d->verticalHeader->logicalIndex(idxBottom); + if (d->verticalHeader->isSectionHidden(logrow)) + continue; + logicalIdx = logrow; + break; + } } + if (logicalIdx < 0) + continue; - hint = qMax(hint, itemDelegate(index)->sizeHint(option, index).width()); + index = d->model->index(logicalIdx, column, d->root); + hint = d->widthHintForIndex(index, hint, option); + ++rowsProcessed; } return d->showGrid ? hint + 1 : hint; @@ -2934,6 +3047,8 @@ void QTableView::showColumn(int column) /*! Resizes the given \a row based on the size hints of the delegate used to render each item in the row. + + \sa resizeRowsToContents(), sizeHintForRow(), QHeaderView::resizeContentsPrecision() */ void QTableView::resizeRowToContents(int row) { @@ -2946,6 +3061,8 @@ void QTableView::resizeRowToContents(int row) /*! Resizes all rows based on the size hints of the delegate used to render each item in the rows. + + \sa resizeRowToContents(), sizeHintForRow(), QHeaderView::resizeContentsPrecision() */ void QTableView::resizeRowsToContents() { @@ -2959,6 +3076,8 @@ void QTableView::resizeRowsToContents() \note Only visible columns will be resized. Reimplement sizeHintForColumn() to resize hidden columns as well. + + \sa resizeColumnsToContents(), sizeHintForColumn(), QHeaderView::resizeContentsPrecision() */ void QTableView::resizeColumnToContents(int column) { @@ -2971,6 +3090,8 @@ void QTableView::resizeColumnToContents(int column) /*! Resizes all columns based on the size hints of the delegate used to render each item in the columns. + + \sa resizeColumnToContents(), sizeHintForColumn(), QHeaderView::resizeContentsPrecision() */ void QTableView::resizeColumnsToContents() { |