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-rw-r--r--src/views/selectionmanager.cpp278
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diff --git a/src/views/selectionmanager.cpp b/src/views/selectionmanager.cpp
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-/***************************************************************************
- * 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 "dolphin_generalsettings.h"
-#include "selectiontoggle.h"
-#include "settings/dolphinsettings.h"
-#include <KDirModel>
-#include <KGlobalSettings>
-#include <KIconEffect>
-
-#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),
- m_appliedPointingHandCursor(false)
-{
- connect(parent, SIGNAL(entered(const QModelIndex&)),
- this, SLOT(slotEntered(const QModelIndex&)));
- connect(parent, SIGNAL(viewportEntered()),
- this, SLOT(slotViewportEntered()));
-
- const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
- if (settings->showSelectionToggle()) {
- m_toggle = new SelectionToggle(m_view->viewport());
- m_toggle->setCheckable(true);
- m_toggle->hide();
- connect(m_toggle, SIGNAL(clicked(bool)),
- this, SLOT(setItemSelected(bool)));
- m_toggle->installEventFilter(this);
- }
-
- m_view->viewport()->installEventFilter(this);
-}
-
-SelectionManager::~SelectionManager()
-{
-}
-
-bool SelectionManager::eventFilter(QObject* watched, QEvent* event)
-{
- if (watched == m_view->viewport()) {
- switch (event->type()) {
- case QEvent::Leave:
- if (m_toggle) {
- m_toggle->hide();
- }
- restoreCursor();
- break;
-
- case QEvent::MouseButtonPress: {
- // Set the toggle invisible, if a mouse button has been pressed
- // outside the toggle boundaries. This e.g. assures, that the toggle
- // gets invisible during dragging items.
- if (m_toggle) {
- const QRect toggleBounds(m_toggle->mapToGlobal(QPoint(0, 0)), m_toggle->size());
- m_toggle->setVisible(toggleBounds.contains(QCursor::pos()));
- }
- break;
- }
-
- default:
- break;
- }
- } else if (watched == m_toggle) {
- switch (event->type()) {
- case QEvent::Enter:
- QApplication::changeOverrideCursor(Qt::ArrowCursor);
- break;
-
- case QEvent::Leave:
- QApplication::changeOverrideCursor(Qt::PointingHandCursor);
- break;
-
- default:
- break;
- }
- }
-
- return QObject::eventFilter(watched, event);
-}
-
-void SelectionManager::reset()
-{
- if (m_toggle) {
- m_toggle->reset();
- }
-}
-
-void SelectionManager::slotEntered(const QModelIndex& index)
-{
- const bool isSelectionCandidate = index.isValid() &&
- (index.column() == DolphinModel::Name) &&
- (QApplication::mouseButtons() == Qt::NoButton);
-
- restoreCursor();
- if (isSelectionCandidate && KGlobalSettings::singleClick()) {
- applyPointingHandCursor();
- }
-
- if (isSelectionCandidate) {
- 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;
- }
- } else {
- 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;
- }
-
- if (!m_toggle) {
- return;
- }
-
- m_toggle->hide();
- if (isSelectionCandidate) {
- m_toggle->setUrl(urlForIndex(index));
-
- // Increase the size of the toggle for large items
- const int iconHeight = m_view->iconSize().height();
-
- int toggleSize = KIconLoader::SizeSmall;
- if (iconHeight >= KIconLoader::SizeEnormous) {
- toggleSize = KIconLoader::SizeMedium;
- } else if (iconHeight >= KIconLoader::SizeLarge) {
- toggleSize = KIconLoader::SizeSmallMedium;
- }
-
- // Add a small invisible margin, if the item-height is nearly
- // equal to the toggleSize (#169494).
- const QRect rect = m_view->visualRect(index);
- int margin = (rect.height() - toggleSize) / 2;
- if (margin > 4) {
- margin = 0;
- }
- toggleSize += 2 * margin;
- m_toggle->setMargin(margin);
- m_toggle->resize(toggleSize, toggleSize);
- m_toggle->move(rect.topLeft());
-
- QItemSelectionModel* selModel = m_view->selectionModel();
- m_toggle->setChecked(selModel->isSelected(index));
- m_toggle->show();
- } else {
- m_toggle->setUrl(KUrl());
- }
-}
-
-void SelectionManager::slotViewportEntered()
-{
- if (m_toggle) {
- m_toggle->hide();
- }
- restoreCursor();
-}
-
-void SelectionManager::setItemSelected(bool selected)
-{
- emit selectionChanged();
-
- if (m_toggle && !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);
- if (m_toggle) {
- m_toggle->hide();
- }
- restoreCursor();
-}
-
-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 && !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);
-}
-
-
-void SelectionManager::applyPointingHandCursor()
-{
- if (!m_appliedPointingHandCursor) {
- QApplication::setOverrideCursor(QCursor(Qt::PointingHandCursor));
- m_appliedPointingHandCursor = true;
- }
-}
-
-void SelectionManager::restoreCursor()
-{
- if (m_appliedPointingHandCursor) {
- QApplication::restoreOverrideCursor();
- m_appliedPointingHandCursor = false;
- }
-}
-
-#include "selectionmanager.moc"
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