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Diffstat (limited to 'src/views/selectionmanager.cpp')
| -rw-r--r-- | src/views/selectionmanager.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/views/selectionmanager.cpp b/src/views/selectionmanager.cpp new file mode 100644 index 000000000..0d3efae09 --- /dev/null +++ b/src/views/selectionmanager.cpp @@ -0,0 +1,186 @@ +/*************************************************************************** + * Copyright (C) 2008 by Peter Penz <[email protected]> * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * + ***************************************************************************/ + +#include "selectionmanager.h" + +#include "dolphinmodel.h" +#include "selectiontoggle.h" +#include <kdirmodel.h> +#include <kiconeffect.h> + +#include <QAbstractButton> +#include <QAbstractItemView> +#include <QAbstractProxyModel> +#include <QApplication> +#include <QModelIndex> +#include <QPainter> +#include <QPaintEvent> +#include <QRect> +#include <QTimeLine> + +SelectionManager::SelectionManager(QAbstractItemView* parent) : + QObject(parent), + m_view(parent), + m_toggle(0), + m_connected(false) +{ + connect(parent, SIGNAL(entered(const QModelIndex&)), + this, SLOT(slotEntered(const QModelIndex&))); + connect(parent, SIGNAL(viewportEntered()), + this, SLOT(slotViewportEntered())); + m_toggle = new SelectionToggle(m_view->viewport()); + m_toggle->setCheckable(true); + m_toggle->hide(); + connect(m_toggle, SIGNAL(clicked(bool)), + this, SLOT(setItemSelected(bool))); +} + +SelectionManager::~SelectionManager() +{ +} + +void SelectionManager::reset() +{ + m_toggle->reset(); +} + +void SelectionManager::slotEntered(const QModelIndex& index) +{ + m_toggle->hide(); + const bool showToggle = index.isValid() && + (index.column() == DolphinModel::Name) && + (QApplication::mouseButtons() == Qt::NoButton); + if (showToggle) { + m_toggle->setUrl(urlForIndex(index)); + + if (!m_connected) { + connect(m_view->model(), SIGNAL(rowsRemoved(const QModelIndex&, int, int)), + this, SLOT(slotRowsRemoved(const QModelIndex&, int, int))); + connect(m_view->selectionModel(), + SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)), + this, + SLOT(slotSelectionChanged(const QItemSelection&, const QItemSelection&))); + m_connected = true; + } + + // increase the size of the toggle for large items + const int height = m_view->iconSize().height(); + if (height >= KIconLoader::SizeEnormous) { + m_toggle->resize(KIconLoader::SizeMedium, KIconLoader::SizeMedium); + } else if (height >= KIconLoader::SizeLarge) { + m_toggle->resize(KIconLoader::SizeSmallMedium, KIconLoader::SizeSmallMedium); + } else { + m_toggle->resize(KIconLoader::SizeSmall, KIconLoader::SizeSmall); + } + + const QRect rect = m_view->visualRect(index); + int x = rect.left(); + int y = rect.top(); + if (height < KIconLoader::SizeSmallMedium) { + // The height is nearly equal to the smallest toggle height. + // Assure that the toggle is vertically centered instead + // of aligned on the top and gets more horizontal gap. + x += 2; + y += (rect.height() - m_toggle->height()) / 2; + } + m_toggle->move(QPoint(x, y)); + + QItemSelectionModel* selModel = m_view->selectionModel(); + m_toggle->setChecked(selModel->isSelected(index)); + m_toggle->show(); + } else { + m_toggle->setUrl(KUrl()); + disconnect(m_view->model(), SIGNAL(rowsRemoved(const QModelIndex&, int, int)), + this, SLOT(slotRowsRemoved(const QModelIndex&, int, int))); + disconnect(m_view->selectionModel(), + SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)), + this, + SLOT(slotSelectionChanged(const QItemSelection&, const QItemSelection&))); + m_connected = false; + } +} + +void SelectionManager::slotViewportEntered() +{ + m_toggle->hide(); +} + +void SelectionManager::setItemSelected(bool selected) +{ + emit selectionChanged(); + + if (!m_toggle->url().isEmpty()) { + const QModelIndex index = indexForUrl(m_toggle->url()); + if (index.isValid()) { + QItemSelectionModel* selModel = m_view->selectionModel(); + if (selected) { + selModel->select(index, QItemSelectionModel::Select); + } else { + selModel->select(index, QItemSelectionModel::Deselect); + } + selModel->setCurrentIndex(index, QItemSelectionModel::Current); + } + } +} + +void SelectionManager::slotRowsRemoved(const QModelIndex& parent, int start, int end) +{ + Q_UNUSED(parent); + Q_UNUSED(start); + Q_UNUSED(end); + m_toggle->hide(); +} + +void SelectionManager::slotSelectionChanged(const QItemSelection& selected, + const QItemSelection& deselected) +{ + // The selection has been changed outside the scope of the selection manager + // (e. g. by the rubberband or the "Select All" action). Take care updating + // the state of the toggle button. + if (!m_toggle->url().isEmpty()) { + const QModelIndex index = indexForUrl(m_toggle->url()); + if (index.isValid()) { + if (selected.contains(index)) { + m_toggle->setChecked(true); + } + + if (deselected.contains(index)) { + m_toggle->setChecked(false); + } + } + } +} + +KUrl SelectionManager::urlForIndex(const QModelIndex& index) const +{ + QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(m_view->model()); + KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel()); + const QModelIndex dirIndex = proxyModel->mapToSource(index); + return dirModel->itemForIndex(dirIndex).url(); +} + +const QModelIndex SelectionManager::indexForUrl(const KUrl& url) const +{ + QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(m_view->model()); + KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel()); + const QModelIndex dirIndex = dirModel->indexForUrl(url); + return proxyModel->mapFromSource(dirIndex); +} + +#include "selectionmanager.moc" |