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Diffstat (limited to 'src/gui/itemviews/qcolumnview.cpp')
| -rw-r--r-- | src/gui/itemviews/qcolumnview.cpp | 1168 |
1 files changed, 0 insertions, 1168 deletions
diff --git a/src/gui/itemviews/qcolumnview.cpp b/src/gui/itemviews/qcolumnview.cpp deleted file mode 100644 index a44ecc7779..0000000000 --- a/src/gui/itemviews/qcolumnview.cpp +++ /dev/null @@ -1,1168 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 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 <qglobal.h> - -#ifndef QT_NO_COLUMNVIEW - -#include "qcolumnview.h" -#include "qcolumnview_p.h" -#include "qcolumnviewgrip_p.h" - -#include <qlistview.h> -#include <qabstractitemdelegate.h> -#include <qscrollbar.h> -#include <qpainter.h> -#include <qdebug.h> - -QT_BEGIN_NAMESPACE - -#define ANIMATION_DURATION_MSEC 150 - -/*! - \since 4.3 - \class QColumnView - \brief The QColumnView class provides a model/view implementation of a column view. - \ingroup model-view - \ingroup advanced - - - QColumnView displays a model in a number of QListViews, one for each - hierarchy in the tree. This is sometimes referred to as a cascading list. - - The QColumnView class is one of the \l{Model/View Classes} - and is part of Qt's \l{Model/View Programming}{model/view framework}. - - QColumnView implements the interfaces defined by the - QAbstractItemView class to allow it to display data provided by - models derived from the QAbstractItemModel class. - - \image qcolumnview.png - - \sa \link model-view-programming.html Model/View Programming\endlink -*/ - -/*! - Constructs a column view with a \a parent to represent a model's - data. Use setModel() to set the model. - - \sa QAbstractItemModel -*/ -QColumnView::QColumnView(QWidget * parent) -: QAbstractItemView(*new QColumnViewPrivate, parent) -{ - Q_D(QColumnView); - d->initialize(); -} - -/*! - \internal -*/ -QColumnView::QColumnView(QColumnViewPrivate & dd, QWidget * parent) -: QAbstractItemView(dd, parent) -{ - Q_D(QColumnView); - d->initialize(); -} - -void QColumnViewPrivate::initialize() -{ - Q_Q(QColumnView); - q->setTextElideMode(Qt::ElideMiddle); -#ifndef QT_NO_ANIMATION - QObject::connect(¤tAnimation, SIGNAL(finished()), q, SLOT(_q_changeCurrentColumn())); - currentAnimation.setDuration(ANIMATION_DURATION_MSEC); - currentAnimation.setTargetObject(hbar); - currentAnimation.setPropertyName("value"); - currentAnimation.setEasingCurve(QEasingCurve::InOutQuad); -#endif //QT_NO_ANIMATION - delete itemDelegate; - q->setItemDelegate(new QColumnViewDelegate(q)); -} - -/*! - Destroys the column view. -*/ -QColumnView::~QColumnView() -{ -} - -/*! - \property QColumnView::resizeGripsVisible - \brief the way to specify if the list views gets resize grips or not - - By default, \c visible is set to true - - \sa setRootIndex() -*/ -void QColumnView::setResizeGripsVisible(bool visible) -{ - Q_D(QColumnView); - if (d->showResizeGrips == visible) - return; - d->showResizeGrips = visible; - for (int i = 0; i < d->columns.count(); ++i) { - QAbstractItemView *view = d->columns[i]; - if (visible) { - QColumnViewGrip *grip = new QColumnViewGrip(view); - view->setCornerWidget(grip); - connect(grip, SIGNAL(gripMoved(int)), this, SLOT(_q_gripMoved(int))); - } else { - QWidget *widget = view->cornerWidget(); - view->setCornerWidget(0); - widget->deleteLater(); - } - } -} - -bool QColumnView::resizeGripsVisible() const -{ - Q_D(const QColumnView); - return d->showResizeGrips; -} - -/*! - \reimp -*/ -void QColumnView::setModel(QAbstractItemModel *model) -{ - Q_D(QColumnView); - if (model == d->model) - return; - d->closeColumns(); - QAbstractItemView::setModel(model); -} - -/*! - \reimp -*/ -void QColumnView::setRootIndex(const QModelIndex &index) -{ - Q_D(QColumnView); - if (!model()) - return; - - d->closeColumns(); - Q_ASSERT(d->columns.count() == 0); - - QAbstractItemView *view = d->createColumn(index, true); - if (view->selectionModel()) - view->selectionModel()->deleteLater(); - if (view->model()) - view->setSelectionModel(selectionModel()); - - QAbstractItemView::setRootIndex(index); - d->updateScrollbars(); -} - -/*! - \reimp -*/ -bool QColumnView::isIndexHidden(const QModelIndex &index) const -{ - Q_UNUSED(index); - return false; -} - -/*! - \reimp -*/ -QModelIndex QColumnView::indexAt(const QPoint &point) const -{ - Q_D(const QColumnView); - for (int i = 0; i < d->columns.size(); ++i) { - QPoint topLeft = d->columns.at(i)->frameGeometry().topLeft(); - QPoint adjustedPoint(point.x() - topLeft.x(), point.y() - topLeft.y()); - QModelIndex index = d->columns.at(i)->indexAt(adjustedPoint); - if (index.isValid()) - return index; - } - return QModelIndex(); -} - -/*! - \reimp -*/ -QRect QColumnView::visualRect(const QModelIndex &index) const -{ - if (!index.isValid()) - return QRect(); - - Q_D(const QColumnView); - for (int i = 0; i < d->columns.size(); ++i) { - QRect rect = d->columns.at(i)->visualRect(index); - if (!rect.isNull()) { - rect.translate(d->columns.at(i)->frameGeometry().topLeft()); - return rect; - } - } - return QRect(); -} - -/*! - \reimp - */ -void QColumnView::scrollContentsBy(int dx, int dy) -{ - Q_D(QColumnView); - if (d->columns.isEmpty() || dx == 0) - return; - - dx = isRightToLeft() ? -dx : dx; - for (int i = 0; i < d->columns.count(); ++i) - d->columns.at(i)->move(d->columns.at(i)->x() + dx, 0); - d->offset += dx; - QAbstractItemView::scrollContentsBy(dx, dy); -} - -/*! - \reimp -*/ -void QColumnView::scrollTo(const QModelIndex &index, ScrollHint hint) -{ - Q_D(QColumnView); - Q_UNUSED(hint); - if (!index.isValid() || d->columns.isEmpty()) - return; - -#ifndef QT_NO_ANIMATION - if (d->currentAnimation.state() == QPropertyAnimation::Running) - return; - - d->currentAnimation.stop(); -#endif //QT_NO_ANIMATION - - // Fill up what is needed to get to index - d->closeColumns(index, true); - - QModelIndex indexParent = index.parent(); - // Find the left edge of the column that contains index - int currentColumn = 0; - int leftEdge = 0; - while (currentColumn < d->columns.size()) { - if (indexParent == d->columns.at(currentColumn)->rootIndex()) - break; - leftEdge += d->columns.at(currentColumn)->width(); - ++currentColumn; - } - - // Don't let us scroll above the root index - if (currentColumn == d->columns.size()) - return; - - int indexColumn = currentColumn; - // Find the width of what we want to show (i.e. the right edge) - int visibleWidth = d->columns.at(currentColumn)->width(); - // We want to always try to show two columns - if (currentColumn + 1 < d->columns.size()) { - ++currentColumn; - visibleWidth += d->columns.at(currentColumn)->width(); - } - - int rightEdge = leftEdge + visibleWidth; - if (isRightToLeft()) { - leftEdge = viewport()->width() - leftEdge; - rightEdge = leftEdge - visibleWidth; - qSwap(rightEdge, leftEdge); - } - - // If it is already visible don't animate - if (leftEdge > -horizontalOffset() - && rightEdge <= ( -horizontalOffset() + viewport()->size().width())) { - d->columns.at(indexColumn)->scrollTo(index); - d->_q_changeCurrentColumn(); - return; - } - - int newScrollbarValue = 0; - if (isRightToLeft()) { - if (leftEdge < 0) { - // scroll to the right - newScrollbarValue = viewport()->size().width() - leftEdge; - } else { - // scroll to the left - newScrollbarValue = rightEdge + horizontalOffset(); - } - } else { - if (leftEdge > -horizontalOffset()) { - // scroll to the right - newScrollbarValue = rightEdge - viewport()->size().width(); - } else { - // scroll to the left - newScrollbarValue = leftEdge; - } - } - -#ifndef QT_NO_ANIMATION - d->currentAnimation.setEndValue(newScrollbarValue); - d->currentAnimation.start(); -#else - horizontalScrollBar()->setValue(newScrollbarValue); -#endif //QT_NO_ANIMATION -} - -/*! - \reimp - Move left should go to the parent index - Move right should go to the child index or down if there is no child -*/ -QModelIndex QColumnView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers) -{ - // the child views which have focus get to deal with this first and if - // they don't accept it then it comes up this view and we only grip left/right - Q_UNUSED(modifiers); - if (!model()) - return QModelIndex(); - - QModelIndex current = currentIndex(); - if (isRightToLeft()) { - if (cursorAction == MoveLeft) - cursorAction = MoveRight; - else if (cursorAction == MoveRight) - cursorAction = MoveLeft; - } - switch (cursorAction) { - case MoveLeft: - if (current.parent().isValid() && current.parent() != rootIndex()) - return (current.parent()); - else - return current; - break; - - case MoveRight: - if (model()->hasChildren(current)) - return model()->index(0, 0, current); - else - return current.sibling(current.row() + 1, current.column()); - break; - - default: - break; - } - - return QModelIndex(); -} - -/*! - \reimp -*/ -void QColumnView::resizeEvent(QResizeEvent *event) -{ - Q_D(QColumnView); - d->doLayout(); - d->updateScrollbars(); - if (!isRightToLeft()) { - int diff = event->oldSize().width() - event->size().width(); - if (diff < 0 && horizontalScrollBar()->isVisible() - && horizontalScrollBar()->value() == horizontalScrollBar()->maximum()) { - horizontalScrollBar()->setMaximum(horizontalScrollBar()->maximum() + diff); - } - } - QAbstractItemView::resizeEvent(event); -} - -/*! - \internal -*/ -void QColumnViewPrivate::updateScrollbars() -{ - Q_Q(QColumnView); -#ifndef QT_NO_ANIMATION - if (currentAnimation.state() == QPropertyAnimation::Running) - return; -#endif //QT_NO_ANIMATION - - // find the total horizontal length of the laid out columns - int horizontalLength = 0; - if (!columns.isEmpty()) { - horizontalLength = (columns.last()->x() + columns.last()->width()) - columns.first()->x(); - if (horizontalLength <= 0) // reverse mode - horizontalLength = (columns.first()->x() + columns.first()->width()) - columns.last()->x(); - } - - QSize viewportSize = viewport->size(); - if (horizontalLength < viewportSize.width() && hbar->value() == 0) { - hbar->setRange(0, 0); - } else { - int visibleLength = qMin(horizontalLength + q->horizontalOffset(), viewportSize.width()); - int hiddenLength = horizontalLength - visibleLength; - if (hiddenLength != hbar->maximum()) - hbar->setRange(0, hiddenLength); - } - if (!columns.isEmpty()) { - int pageStepSize = columns.at(0)->width(); - if (pageStepSize != hbar->pageStep()) - hbar->setPageStep(pageStepSize); - } - bool visible = (hbar->maximum() > 0); - if (visible != hbar->isVisible()) - hbar->setVisible(visible); -} - -/*! - \reimp -*/ -int QColumnView::horizontalOffset() const -{ - Q_D(const QColumnView); - return d->offset; -} - -/*! - \reimp -*/ -int QColumnView::verticalOffset() const -{ - return 0; -} - -/*! - \reimp -*/ -QRegion QColumnView::visualRegionForSelection(const QItemSelection &selection) const -{ - int ranges = selection.count(); - - if (ranges == 0) - return QRect(); - - // Note that we use the top and bottom functions of the selection range - // since the data is stored in rows. - int firstRow = selection.at(0).top(); - int lastRow = selection.at(0).top(); - for (int i = 0; i < ranges; ++i) { - firstRow = qMin(firstRow, selection.at(i).top()); - lastRow = qMax(lastRow, selection.at(i).bottom()); - } - - QModelIndex firstIdx = model()->index(qMin(firstRow, lastRow), 0, rootIndex()); - QModelIndex lastIdx = model()->index(qMax(firstRow, lastRow), 0, rootIndex()); - - if (firstIdx == lastIdx) - return visualRect(firstIdx); - - QRegion firstRegion = visualRect(firstIdx); - QRegion lastRegion = visualRect(lastIdx); - return firstRegion.unite(lastRegion); -} - -/*! - \reimp -*/ -void QColumnView::setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command) -{ - Q_UNUSED(rect); - Q_UNUSED(command); -} - -/*! - \reimp -*/ -void QColumnView::setSelectionModel(QItemSelectionModel *newSelectionModel) -{ - Q_D(const QColumnView); - for (int i = 0; i < d->columns.size(); ++i) { - if (d->columns.at(i)->selectionModel() == selectionModel()) { - d->columns.at(i)->setSelectionModel(newSelectionModel); - break; - } - } - QAbstractItemView::setSelectionModel(newSelectionModel); -} - -/*! - \reimp -*/ -QSize QColumnView::sizeHint() const -{ - Q_D(const QColumnView); - QSize sizeHint; - for (int i = 0; i < d->columns.size(); ++i) { - sizeHint += d->columns.at(i)->sizeHint(); - } - return sizeHint.expandedTo(QAbstractItemView::sizeHint()); -} - -/*! - \internal - Move all widgets from the corner grip and to the right - */ -void QColumnViewPrivate::_q_gripMoved(int offset) -{ - Q_Q(QColumnView); - - QObject *grip = q->sender(); - Q_ASSERT(grip); - - if (q->isRightToLeft()) - offset = -1 * offset; - - bool found = false; - for (int i = 0; i < columns.size(); ++i) { - if (!found && columns.at(i)->cornerWidget() == grip) { - found = true; - columnSizes[i] = columns.at(i)->width(); - if (q->isRightToLeft()) - columns.at(i)->move(columns.at(i)->x() + offset, 0); - continue; - } - if (!found) - continue; - - int currentX = columns.at(i)->x(); - columns.at(i)->move(currentX + offset, 0); - } - - updateScrollbars(); -} - -/*! - \internal - - Find where the current columns intersect parent's columns - - Delete any extra columns and insert any needed columns. - */ -void QColumnViewPrivate::closeColumns(const QModelIndex &parent, bool build) -{ - if (columns.isEmpty()) - return; - - bool clearAll = !parent.isValid(); - bool passThroughRoot = false; - - QList<QModelIndex> dirsToAppend; - - // Find the last column that matches the parent's tree - int currentColumn = -1; - QModelIndex parentIndex = parent; - while (currentColumn == -1 && parentIndex.isValid()) { - if (columns.isEmpty()) - break; - parentIndex = parentIndex.parent(); - if (root == parentIndex) - passThroughRoot = true; - if (!parentIndex.isValid()) - break; - for (int i = columns.size() - 1; i >= 0; --i) { - if (columns.at(i)->rootIndex() == parentIndex) { - currentColumn = i; - break; - } - } - if (currentColumn == -1) - dirsToAppend.append(parentIndex); - } - - // Someone wants to go to an index that can be reached without changing - // the root index, don't allow them - if (!clearAll && !passThroughRoot && currentColumn == -1) - return; - - if (currentColumn == -1 && parent.isValid()) - currentColumn = 0; - - // Optimization so we don't go deleting and then creating the same thing - bool alreadyExists = false; - if (build && columns.size() > currentColumn + 1) { - bool viewingParent = (columns.at(currentColumn + 1)->rootIndex() == parent); - bool viewingChild = (!model->hasChildren(parent) - && !columns.at(currentColumn + 1)->rootIndex().isValid()); - if (viewingParent || viewingChild) { - currentColumn++; - alreadyExists = true; - } - } - - // Delete columns that don't match our path - for (int i = columns.size() - 1; i > currentColumn; --i) { - QAbstractItemView* notShownAnymore = columns.at(i); - columns.removeAt(i); - notShownAnymore->setVisible(false); - if (notShownAnymore != previewColumn) - notShownAnymore->deleteLater(); - } - - if (columns.isEmpty()) { - offset = 0; - updateScrollbars(); - } - - // Now fill in missing columns - while (!dirsToAppend.isEmpty()) { - QAbstractItemView *newView = createColumn(dirsToAppend.takeLast(), true); - if (!dirsToAppend.isEmpty()) - newView->setCurrentIndex(dirsToAppend.last()); - } - - if (build && !alreadyExists) - createColumn(parent, false); -} - -void QColumnViewPrivate::_q_clicked(const QModelIndex &index) -{ - Q_Q(QColumnView); - QModelIndex parent = index.parent(); - QAbstractItemView *columnClicked = 0; - for (int column = 0; column < columns.count(); ++column) { - if (columns.at(column)->rootIndex() == parent) { - columnClicked = columns[column]; - break; - } - } - if (q->selectionModel() && columnClicked) { - QItemSelectionModel::SelectionFlags flags = QItemSelectionModel::Current; - if (columnClicked->selectionModel()->isSelected(index)) - flags |= QItemSelectionModel::Select; - q->selectionModel()->setCurrentIndex(index, flags); - } -} - -/*! - \internal - Create a new column for \a index. A grip is attached if requested and it is shown - if requested. - - Return the new view - - \sa createColumn() setPreviewWidget() - \sa doLayout() -*/ -QAbstractItemView *QColumnViewPrivate::createColumn(const QModelIndex &index, bool show) -{ - Q_Q(QColumnView); - QAbstractItemView *view = 0; - if (model->hasChildren(index)) { - view = q->createColumn(index); - q->connect(view, SIGNAL(clicked(QModelIndex)), - q, SLOT(_q_clicked(QModelIndex))); - } else { - if (!previewColumn) - setPreviewWidget(new QWidget(q)); - view = previewColumn; - view->setMinimumWidth(qMax(view->minimumWidth(), previewWidget->minimumWidth())); - } - - q->connect(view, SIGNAL(activated(QModelIndex)), - q, SIGNAL(activated(QModelIndex))); - q->connect(view, SIGNAL(clicked(QModelIndex)), - q, SIGNAL(clicked(QModelIndex))); - q->connect(view, SIGNAL(doubleClicked(QModelIndex)), - q, SIGNAL(doubleClicked(QModelIndex))); - q->connect(view, SIGNAL(entered(QModelIndex)), - q, SIGNAL(entered(QModelIndex))); - q->connect(view, SIGNAL(pressed(QModelIndex)), - q, SIGNAL(pressed(QModelIndex))); - - view->setFocusPolicy(Qt::NoFocus); - view->setParent(viewport); - Q_ASSERT(view); - - // Setup corner grip - if (showResizeGrips) { - QColumnViewGrip *grip = new QColumnViewGrip(view); - view->setCornerWidget(grip); - q->connect(grip, SIGNAL(gripMoved(int)), q, SLOT(_q_gripMoved(int))); - } - - if (columnSizes.count() > columns.count()) { - view->setGeometry(0, 0, columnSizes.at(columns.count()), viewport->height()); - } else { - int initialWidth = view->sizeHint().width(); - if (q->isRightToLeft()) - view->setGeometry(viewport->width() - initialWidth, 0, initialWidth, viewport->height()); - else - view->setGeometry(0, 0, initialWidth, viewport->height()); - columnSizes.resize(qMax(columnSizes.count(), columns.count() + 1)); - columnSizes[columns.count()] = initialWidth; - } - if (!columns.isEmpty() && columns.last()->isHidden()) - columns.last()->setVisible(true); - - columns.append(view); - doLayout(); - updateScrollbars(); - if (show && view->isHidden()) - view->setVisible(true); - return view; -} - -/*! - \fn void QColumnView::updatePreviewWidget(const QModelIndex &index) - - This signal is emitted when the preview widget should be updated to - provide rich information about \a index - - \sa previewWidget() - */ - -/*! - To use a custom widget for the final column when you select - an item overload this function and return a widget. - \a index is the root index that will be assigned to the view. - - Return the new view. QColumnView will automatically take ownership of the widget. - - \sa setPreviewWidget() - */ -QAbstractItemView *QColumnView::createColumn(const QModelIndex &index) -{ - QListView *view = new QListView(viewport()); - - initializeColumn(view); - - view->setRootIndex(index); - if (model()->canFetchMore(index)) - model()->fetchMore(index); - - return view; -} - -/*! - Copies the behavior and options of the column view and applies them to - the \a column such as the iconSize(), textElideMode() and - alternatingRowColors(). This can be useful when reimplementing - createColumn(). - - \since 4.4 - \sa createColumn() - */ -void QColumnView::initializeColumn(QAbstractItemView *column) const -{ - Q_D(const QColumnView); - - column->setFrameShape(QFrame::NoFrame); - column->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); - column->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn); - column->setMinimumWidth(100); - column->setAttribute(Qt::WA_MacShowFocusRect, false); - -#ifndef QT_NO_DRAGANDDROP - column->setDragDropMode(dragDropMode()); - column->setDragDropOverwriteMode(dragDropOverwriteMode()); - column->setDropIndicatorShown(showDropIndicator()); -#endif - column->setAlternatingRowColors(alternatingRowColors()); - column->setAutoScroll(hasAutoScroll()); - column->setEditTriggers(editTriggers()); - column->setHorizontalScrollMode(horizontalScrollMode()); - column->setIconSize(iconSize()); - column->setSelectionBehavior(selectionBehavior()); - column->setSelectionMode(selectionMode()); - column->setTabKeyNavigation(tabKeyNavigation()); - column->setTextElideMode(textElideMode()); - column->setVerticalScrollMode(verticalScrollMode()); - - column->setModel(model()); - - // Copy the custom delegate per row - QMapIterator<int, QPointer<QAbstractItemDelegate> > i(d->rowDelegates); - while (i.hasNext()) { - i.next(); - column->setItemDelegateForRow(i.key(), i.value()); - } - - // set the delegate to be the columnview delegate - QAbstractItemDelegate *delegate = column->itemDelegate(); - column->setItemDelegate(d->itemDelegate); - delete delegate; -} - -/*! - Returns the preview widget, or 0 if there is none. - - \sa setPreviewWidget(), updatePreviewWidget() -*/ -QWidget *QColumnView::previewWidget() const -{ - Q_D(const QColumnView); - return d->previewWidget; -} - -/*! - Sets the preview \a widget. - - The \a widget becomes a child of the column view, and will be - destroyed when the column area is deleted or when a new widget is - set. - - \sa previewWidget(), updatePreviewWidget() -*/ -void QColumnView::setPreviewWidget(QWidget *widget) -{ - Q_D(QColumnView); - d->setPreviewWidget(widget); -} - -/*! - \internal -*/ -void QColumnViewPrivate::setPreviewWidget(QWidget *widget) -{ - Q_Q(QColumnView); - if (previewColumn) { - if (!columns.isEmpty() && columns.last() == previewColumn) - columns.removeLast(); - previewColumn->deleteLater(); - } - QColumnViewPreviewColumn *column = new QColumnViewPreviewColumn(q); - column->setPreviewWidget(widget); - previewColumn = column; - previewColumn->hide(); - previewColumn->setFrameShape(QFrame::NoFrame); - previewColumn->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn); - previewColumn->setSelectionMode(QAbstractItemView::NoSelection); - previewColumn->setMinimumWidth(qMax(previewColumn->verticalScrollBar()->width(), - previewColumn->minimumWidth())); - previewWidget = widget; - previewWidget->setParent(previewColumn->viewport()); -} - -/*! - Sets the column widths to the values given in the \a list. Extra values in the list are - kept and used when the columns are created. - - If list contains too few values, only width of the rest of the columns will not be modified. - - \sa columnWidths(), createColumn() -*/ -void QColumnView::setColumnWidths(const QList<int> &list) -{ - Q_D(QColumnView); - int i = 0; - for (; (i < list.count() && i < d->columns.count()); ++i) { - d->columns.at(i)->resize(list.at(i), d->columns.at(i)->height()); - d->columnSizes[i] = list.at(i); - } - for (; i < list.count(); ++i) - d->columnSizes.append(list.at(i)); -} - -/*! - Returns a list of the width of all the columns in this view. - - \sa setColumnWidths() -*/ -QList<int> QColumnView::columnWidths() const -{ - Q_D(const QColumnView); - QList<int> list; - for (int i = 0; i < d->columns.count(); ++i) - list.append(d->columnSizes.at(i)); - return list; -} - -/*! - \reimp -*/ -void QColumnView::rowsInserted(const QModelIndex &parent, int start, int end) -{ - QAbstractItemView::rowsInserted(parent, start, end); - d_func()->checkColumnCreation(parent); -} - -/*! - \reimp -*/ -void QColumnView::currentChanged(const QModelIndex ¤t, const QModelIndex &previous) -{ - Q_D(QColumnView); - if (!current.isValid()) { - QAbstractItemView::currentChanged(current, previous); - return; - } - - QModelIndex currentParent = current.parent(); - // optimize for just moving up/down in a list where the child view doesn't change - if (currentParent == previous.parent() - && model()->hasChildren(current) && model()->hasChildren(previous)) { - for (int i = 0; i < d->columns.size(); ++i) { - if (currentParent == d->columns.at(i)->rootIndex()) { - if (d->columns.size() > i + 1) { - QAbstractItemView::currentChanged(current, previous); - return; - } - break; - } - } - } - - // Scrolling to the right we need to have an empty spot - bool found = false; - if (currentParent == previous) { - for (int i = 0; i < d->columns.size(); ++i) { - if (currentParent == d->columns.at(i)->rootIndex()) { - found = true; - if (d->columns.size() < i + 2) { - d->createColumn(current, false); - } - break; - } - } - } - if (!found) - d->closeColumns(current, true); - - if (!model()->hasChildren(current)) - emit updatePreviewWidget(current); - - QAbstractItemView::currentChanged(current, previous); -} - -/* - We have change the current column and need to update focus and selection models - on the new current column. -*/ -void QColumnViewPrivate::_q_changeCurrentColumn() -{ - Q_Q(QColumnView); - if (columns.isEmpty()) - return; - - QModelIndex current = q->currentIndex(); - if (!current.isValid()) - return; - - // We might have scrolled far to the left so we need to close all of the children - closeColumns(current, true); - - // Set up the "current" column with focus - int currentColumn = qMax(0, columns.size() - 2); - QAbstractItemView *parentColumn = columns.at(currentColumn); - if (q->hasFocus()) - parentColumn->setFocus(Qt::OtherFocusReason); - q->setFocusProxy(parentColumn); - - // find the column that is our current selection model and give it a new one. - for (int i = 0; i < columns.size(); ++i) { - if (columns.at(i)->selectionModel() == q->selectionModel()) { - QItemSelectionModel *replacementSelectionModel = - new QItemSelectionModel(parentColumn->model()); - replacementSelectionModel->setCurrentIndex( - q->selectionModel()->currentIndex(), QItemSelectionModel::Current); - replacementSelectionModel->select( - q->selectionModel()->selection(), QItemSelectionModel::Select); - QAbstractItemView *view = columns.at(i); - view->setSelectionModel(replacementSelectionModel); - view->setFocusPolicy(Qt::NoFocus); - if (columns.size() > i + 1) - view->setCurrentIndex(columns.at(i+1)->rootIndex()); - break; - } - } - parentColumn->selectionModel()->deleteLater(); - parentColumn->setFocusPolicy(Qt::StrongFocus); - parentColumn->setSelectionModel(q->selectionModel()); - // We want the parent selection to stay highlighted (but dimmed depending upon the color theme) - if (currentColumn > 0) { - parentColumn = columns.at(currentColumn - 1); - if (parentColumn->currentIndex() != current.parent()) - parentColumn->setCurrentIndex(current.parent()); - } - - if (columns.last()->isHidden()) { - columns.last()->setVisible(true); - } - if (columns.last()->selectionModel()) - columns.last()->selectionModel()->clear(); - updateScrollbars(); -} - -/*! - \reimp -*/ -void QColumnView::selectAll() -{ - if (!model() || !selectionModel()) - return; - - QModelIndexList indexList = selectionModel()->selectedIndexes(); - QModelIndex parent = rootIndex(); - QItemSelection selection; - if (indexList.count() >= 1) - parent = indexList.at(0).parent(); - if (indexList.count() == 1) { - parent = indexList.at(0); - if (!model()->hasChildren(parent)) - parent = parent.parent(); - else - selection.append(QItemSelectionRange(parent, parent)); - } - - QModelIndex tl = model()->index(0, 0, parent); - QModelIndex br = model()->index(model()->rowCount(parent) - 1, - model()->columnCount(parent) - 1, - parent); - selection.append(QItemSelectionRange(tl, br)); - selectionModel()->select(selection, QItemSelectionModel::ClearAndSelect); -} - -/* - * private object implementation - */ -QColumnViewPrivate::QColumnViewPrivate() -: QAbstractItemViewPrivate() -,showResizeGrips(true) -,offset(0) -,previewWidget(0) -,previewColumn(0) -{ -} - -QColumnViewPrivate::~QColumnViewPrivate() -{ -} - -/*! - \internal - - */ -void QColumnViewPrivate::_q_columnsInserted(const QModelIndex &parent, int start, int end) -{ - QAbstractItemViewPrivate::_q_columnsInserted(parent, start, end); - checkColumnCreation(parent); -} - -/*! - \internal - - Makes sure we create a corresponding column as a result of changing the model. - - */ -void QColumnViewPrivate::checkColumnCreation(const QModelIndex &parent) -{ - if (parent == q_func()->currentIndex() && model->hasChildren(parent)) { - //the parent has children and is the current - //let's try to find out if there is already a mapping that is good - for (int i = 0; i < columns.count(); ++i) { - QAbstractItemView *view = columns.at(i); - if (view->rootIndex() == parent) { - if (view == previewColumn) { - //let's recreate the parent - closeColumns(parent, false); - createColumn(parent, true /*show*/); - } - break; - } - } - } -} - -/*! - \internal - Place all of the columns where they belong inside of the viewport, resize as necessary. -*/ -void QColumnViewPrivate::doLayout() -{ - Q_Q(QColumnView); - if (!model || columns.isEmpty()) - return; - - int viewportHeight = viewport->height(); - int x = columns.at(0)->x(); - - if (q->isRightToLeft()) { - x = viewport->width() + q->horizontalOffset(); - for (int i = 0; i < columns.size(); ++i) { - QAbstractItemView *view = columns.at(i); - x -= view->width(); - if (x != view->x() || viewportHeight != view->height()) - view->setGeometry(x, 0, view->width(), viewportHeight); - } - } else { - for (int i = 0; i < columns.size(); ++i) { - QAbstractItemView *view = columns.at(i); - int currentColumnWidth = view->width(); - if (x != view->x() || viewportHeight != view->height()) - view->setGeometry(x, 0, currentColumnWidth, viewportHeight); - x += currentColumnWidth; - } - } -} - -/*! - \internal - - Draws a delegate with a > if an object has children. - - \sa {Model/View Programming}, QItemDelegate -*/ -void QColumnViewDelegate::paint(QPainter *painter, - const QStyleOptionViewItem &option, - const QModelIndex &index) const -{ - drawBackground(painter, option, index ); - - bool reverse = (option.direction == Qt::RightToLeft); - int width = ((option.rect.height() * 2) / 3); - // Modify the options to give us room to add an arrow - QStyleOptionViewItemV4 opt = option; - if (reverse) - opt.rect.adjust(width,0,0,0); - else - opt.rect.adjust(0,0,-width,0); - - if (!(index.model()->flags(index) & Qt::ItemIsEnabled)) { - opt.showDecorationSelected = true; - opt.state |= QStyle::State_Selected; - } - - QItemDelegate::paint(painter, opt, index); - - if (reverse) - opt.rect = QRect(option.rect.x(), option.rect.y(), width, option.rect.height()); - else - opt.rect = QRect(option.rect.x() + option.rect.width() - width, option.rect.y(), - width, option.rect.height()); - - // Draw > - if (index.model()->hasChildren(index)) { - const QWidget *view = opt.widget; - QStyle *style = view ? view->style() : QApplication::style(); - style->drawPrimitive(QStyle::PE_IndicatorColumnViewArrow, &opt, painter, view); - } -} - -QT_END_NAMESPACE - -#include "moc_qcolumnview.cpp" - -#endif // QT_NO_COLUMNVIEW |