147 lines
3.8 KiB
C++
147 lines
3.8 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2012 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "treeview.h"
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#include <QtGui/QMouseEvent>
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#include <QtGui/QPaintEvent>
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#include <QtGui/QPainter>
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#include <QtCore/QMap>
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TreeView::TreeView(QWidget *parent)
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: QTreeView(parent)
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{
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setDragEnabled(true);
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setContextMenuPolicy(Qt::NoContextMenu);
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// setRootIsDecorated(false);
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setAllColumnsShowFocus(true);
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setAlternatingRowColors(true);
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setSelectionMode(QAbstractItemView::ExtendedSelection);
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setSelectionBehavior(QAbstractItemView::SelectRows);
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setAttribute(Qt::WA_MouseTracking);
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TOUCH_SETUP
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}
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TreeView::~TreeView()
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{
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}
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void TreeView::setPageDefaults()
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{
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sortByColumn(0, Qt::AscendingOrder);
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setHeaderHidden(true);
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setDragDropMode(QAbstractItemView::DragOnly);
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setSortingEnabled(true);
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}
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void TreeView::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
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{
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QTreeView::selectionChanged(selected, deselected);
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bool haveSelection=selectedIndexes().count();
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setContextMenuPolicy(haveSelection ? Qt::ActionsContextMenu : Qt::NoContextMenu);
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emit itemsSelected(haveSelection);
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}
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bool TreeView::haveSelectedItems() const
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{
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return selectedIndexes().count()>0;
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}
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bool TreeView::haveUnSelectedItems() const
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{
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return selectedIndexes().count()!=model()->rowCount();
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}
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void TreeView::mouseReleaseEvent(QMouseEvent *event)
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{
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if (Qt::NoModifier==event->modifiers()) {
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QTreeView::mouseReleaseEvent(event);
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}
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}
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QModelIndexList TreeView::selectedIndexes() const
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{
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QModelIndexList indexes=selectionModel()->selectedIndexes();
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QMap<int, QModelIndex> sort;
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foreach (const QModelIndex &idx, indexes) {
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sort.insertMulti(visualRect(idx).y(), idx);
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}
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return sort.values();
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}
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void TreeView::expandAll()
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{
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quint32 count=model()->rowCount();
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for (quint32 i=0; i<count; ++i) {
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expand(model()->index(i, 0));
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}
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}
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void TreeView::expand(const QModelIndex &idx)
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{
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if (idx.isValid()) {
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setExpanded(idx, true);
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quint32 count=model()->rowCount(idx);
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for (quint32 i=0; i<count; ++i) {
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expand(idx.child(i, 0));
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}
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}
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}
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void TreeView::setModel(QAbstractItemModel *m)
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{
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QAbstractItemModel *old=model();
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QTreeView::setModel(m);
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if (old) {
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disconnect(old, SIGNAL(layoutChanged()), this, SLOT(correctSelection()));
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}
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if (m && old!=m) {
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connect(m, SIGNAL(layoutChanged()), this, SLOT(correctSelection()));
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}
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}
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// Workaround for https://bugreports.qt-project.org/browse/QTBUG-18009
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void TreeView::correctSelection()
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{
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QItemSelection s = selectionModel()->selection();
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setCurrentIndex(currentIndex());
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selectionModel()->select(s, QItemSelectionModel::SelectCurrent);
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}
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void TreeView::paintEvent(QPaintEvent *e)
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{
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if (!pixmap.isNull()) {
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QPainter p(viewport());
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p.setOpacity(0.15);
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p.drawPixmap((width() - pixmap.width())/2, (height() - pixmap.height())/2, pixmap);
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}
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QTreeView::paintEvent(e);
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}
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TOUCH_CONTEXT_MENU(TreeView)
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TOUCH_EVENT_HANDLER(TreeView)
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