/***************************************************************************
- * Copyright (C) 2006 by Peter Penz *
- * peter.penz@gmx.at *
+ * Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at) *
+ * Copyright (C) 2008 by Simon St. James (kdedevel@etotheipiplusone.com) *
* *
* 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 *
***************************************************************************/
#include "dolphindetailsview.h"
-#include "dolphinview.h"
-DolphinDetailsView::DolphinDetailsView(DolphinView* parent) :
- QListView(parent)
+#include "dolphinmodel.h"
+#include "dolphincontroller.h"
+#include "dolphinfileitemdelegate.h"
+#include "dolphinsettings.h"
+#include "dolphinsortfilterproxymodel.h"
+#include "dolphinviewautoscroller.h"
+#include "draganddrophelper.h"
+#include "selectionmanager.h"
+#include "viewproperties.h"
+#include "zoomlevelinfo.h"
+
+#include "dolphin_detailsmodesettings.h"
+#include "dolphin_generalsettings.h"
+
+#include <kdirmodel.h>
+#include <klocale.h>
+#include <kmenu.h>
+
+#include <QAbstractProxyModel>
+#include <QAction>
+#include <QApplication>
+#include <QHeaderView>
+#include <QRubberBand>
+#include <QPainter>
+#include <QScrollBar>
+
+DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
+ QTreeView(parent),
+ m_autoResize(true),
+ m_expandingTogglePressed(false),
+ m_keyPressed(false),
+ m_useDefaultIndexAt(true),
+ m_ignoreScrollTo(false),
+ m_controller(controller),
+ m_selectionManager(0),
+ m_autoScroller(0),
+ m_font(),
+ m_decorationSize(),
+ m_band()
{
+ const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
+ Q_ASSERT(settings != 0);
+ Q_ASSERT(controller != 0);
+
+ setLayoutDirection(Qt::LeftToRight);
+ setAcceptDrops(true);
+ setSortingEnabled(true);
+ setUniformRowHeights(true);
+ setSelectionBehavior(SelectItems);
+ setDragDropMode(QAbstractItemView::DragDrop);
+ setDropIndicatorShown(false);
+ setAlternatingRowColors(true);
+ setRootIsDecorated(settings->expandableFolders());
+ setItemsExpandable(settings->expandableFolders());
+ setEditTriggers(QAbstractItemView::NoEditTriggers);
+
+ setMouseTracking(true);
+ m_autoScroller = new DolphinViewAutoScroller(this);
+
+ const ViewProperties props(controller->url());
+ setSortIndicatorSection(props.sorting());
+ setSortIndicatorOrder(props.sortOrder());
+
+ QHeaderView* headerView = header();
+ connect(headerView, SIGNAL(sectionClicked(int)),
+ this, SLOT(synchronizeSortingState(int)));
+ headerView->setContextMenuPolicy(Qt::CustomContextMenu);
+ connect(headerView, SIGNAL(customContextMenuRequested(const QPoint&)),
+ this, SLOT(configureColumns(const QPoint&)));
+ connect(headerView, SIGNAL(sectionResized(int, int, int)),
+ this, SLOT(slotHeaderSectionResized(int, int, int)));
+ connect(headerView, SIGNAL(sectionHandleDoubleClicked(int)),
+ this, SLOT(disableAutoResizing()));
+
+ connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
+ this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
+ connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
+ this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
+
+ connect(this, SIGNAL(clicked(const QModelIndex&)),
+ controller, SLOT(requestTab(const QModelIndex&)));
+ if (KGlobalSettings::singleClick()) {
+ connect(this, SIGNAL(clicked(const QModelIndex&)),
+ controller, SLOT(triggerItem(const QModelIndex&)));
+ } else {
+ connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
+ controller, SLOT(triggerItem(const QModelIndex&)));
+ }
+
+ if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
+ m_selectionManager = new SelectionManager(this);
+ connect(m_selectionManager, SIGNAL(selectionChanged()),
+ this, SLOT(requestActivation()));
+ connect(m_controller, SIGNAL(urlChanged(const KUrl&)),
+ m_selectionManager, SLOT(reset()));
+ }
+
+ connect(this, SIGNAL(entered(const QModelIndex&)),
+ this, SLOT(slotEntered(const QModelIndex&)));
+ connect(this, SIGNAL(viewportEntered()),
+ controller, SLOT(emitViewportEntered()));
+ connect(controller, SIGNAL(zoomLevelChanged(int)),
+ this, SLOT(setZoomLevel(int)));
+ connect(controller->dolphinView(), SIGNAL(additionalInfoChanged()),
+ this, SLOT(updateColumnVisibility()));
+ connect(controller, SIGNAL(activationChanged(bool)),
+ this, SLOT(slotActivationChanged(bool)));
+
+ if (settings->useSystemFont()) {
+ m_font = KGlobalSettings::generalFont();
+ } else {
+ m_font = QFont(settings->fontFamily(),
+ settings->fontSize(),
+ settings->fontWeight(),
+ settings->italicFont());
+ }
+
+ setVerticalScrollMode(QTreeView::ScrollPerPixel);
+ setHorizontalScrollMode(QTreeView::ScrollPerPixel);
+
+ const DolphinView* view = controller->dolphinView();
+ connect(view, SIGNAL(showPreviewChanged()),
+ this, SLOT(slotShowPreviewChanged()));
+
+ updateDecorationSize(view->showPreview());
+
+ setFocus();
+ viewport()->installEventFilter(this);
+
+ connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
+ this, SLOT(updateFont()));
+
+ m_useDefaultIndexAt = false;
}
DolphinDetailsView::~DolphinDetailsView()
{
}
+
+bool DolphinDetailsView::event(QEvent* event)
+{
+ if (event->type() == QEvent::Polish) {
+ QHeaderView* headerView = header();
+ headerView->setResizeMode(QHeaderView::Interactive);
+ headerView->setMovable(false);
+
+ updateColumnVisibility();
+
+ hideColumn(DolphinModel::Rating);
+ hideColumn(DolphinModel::Tags);
+ }
+
+ return QTreeView::event(event);
+}
+
+QStyleOptionViewItem DolphinDetailsView::viewOptions() const
+{
+ QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
+ viewOptions.font = m_font;
+ viewOptions.showDecorationSelected = true;
+ viewOptions.decorationSize = m_decorationSize;
+ return viewOptions;
+}
+
+void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
+{
+ QTreeView::contextMenuEvent(event);
+ m_controller->triggerContextMenuRequest(event->pos());
+}
+
+void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
+{
+ m_controller->requestActivation();
+
+ const QModelIndex current = currentIndex();
+ QTreeView::mousePressEvent(event);
+
+ m_expandingTogglePressed = false;
+ const QModelIndex index = indexAt(event->pos());
+ const bool updateState = index.isValid() &&
+ (index.column() == DolphinModel::Name) &&
+ (event->button() == Qt::LeftButton);
+ if (updateState) {
+ // TODO: See comment in DolphinIconsView::mousePressEvent(). Only update
+ // the state if no expanding/collapsing area has been hit:
+ const QRect rect = visualRect(index);
+ if (event->pos().x() >= rect.x() + indentation()) {
+ setState(QAbstractItemView::DraggingState);
+ } else {
+ m_expandingTogglePressed = true;
+ }
+ }
+
+ if (!index.isValid() || (index.column() != DolphinModel::Name)) {
+ // the mouse press is done somewhere outside the filename column
+ if (QApplication::mouseButtons() & Qt::MidButton) {
+ m_controller->replaceUrlByClipboard();
+ }
+
+ const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
+ if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
+ clearSelection();
+ }
+
+ // restore the current index, other columns are handled as viewport area.
+ // setCurrentIndex(...) implicitly calls scrollTo(...), which we want to ignore.
+ m_ignoreScrollTo = true;
+ selectionModel()->setCurrentIndex(current, QItemSelectionModel::Current);
+ m_ignoreScrollTo = false;
+
+ if ((event->button() == Qt::LeftButton) && !m_expandingTogglePressed) {
+ // Inform Qt about what we are doing - otherwise it starts dragging items around!
+ setState(DragSelectingState);
+ m_band.show = true;
+ // Incremental update data will not be useful - start from scratch.
+ m_band.ignoreOldInfo = true;
+ const QPoint scrollPos(horizontalScrollBar()->value(), verticalScrollBar()->value());
+ m_band.origin = event->pos() + scrollPos;
+ m_band.destination = m_band.origin;
+ m_band.originalSelection = selectionModel()->selection();
+ }
+ }
+}
+
+void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
+{
+ if (m_band.show) {
+ const QPoint mousePos = event->pos();
+ const QModelIndex index = indexAt(mousePos);
+ if (!index.isValid()) {
+ // the destination of the selection rectangle is above the viewport. In this
+ // case QTreeView does no selection at all, which is not the wanted behavior
+ // in Dolphin -> select all items within the elastic band rectangle
+ updateElasticBandSelection();
+ }
+
+ // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
+ // as the Qt-issue #199631 has been fixed.
+ // QTreeView::mouseMoveEvent(event);
+ QAbstractItemView::mouseMoveEvent(event);
+ updateElasticBand();
+ } else {
+ // TODO: enable QTreeView::mouseMoveEvent(event) again, as soon
+ // as the Qt-issue #199631 has been fixed.
+ // QTreeView::mouseMoveEvent(event);
+ QAbstractItemView::mouseMoveEvent(event);
+ }
+
+ if (m_expandingTogglePressed) {
+ // Per default QTreeView starts either a selection or a drag operation when dragging
+ // the expanding toggle button (Qt-issue - see TODO comment in DolphinIconsView::mousePressEvent()).
+ // Turn off this behavior in Dolphin to stay predictable:
+ clearSelection();
+ setState(QAbstractItemView::NoState);
+ }
+}
+
+void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
+{
+ const QModelIndex index = indexAt(event->pos());
+ if (index.isValid() && (index.column() == DolphinModel::Name)) {
+ QTreeView::mouseReleaseEvent(event);
+ } else {
+ // don't change the current index if the cursor is released
+ // above any other column than the name column, as the other
+ // columns act as viewport
+ const QModelIndex current = currentIndex();
+ QTreeView::mouseReleaseEvent(event);
+ selectionModel()->setCurrentIndex(current, QItemSelectionModel::Current);
+ }
+
+ m_expandingTogglePressed = false;
+ if (m_band.show) {
+ setState(NoState);
+ updateElasticBand();
+ m_band.show = false;
+ }
+}
+
+void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
+{
+ DragAndDropHelper::instance().startDrag(this, supportedActions, m_controller);
+ m_band.show = false;
+}
+
+void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
+{
+ if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
+ event->acceptProposedAction();
+ }
+
+ if (m_band.show) {
+ updateElasticBand();
+ m_band.show = false;
+ }
+}
+
+void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
+{
+ QTreeView::dragLeaveEvent(event);
+ setDirtyRegion(m_dropRect);
+}
+
+void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
+{
+ QTreeView::dragMoveEvent(event);
+
+ // TODO: remove this code when the issue #160611 is solved in Qt 4.4
+ setDirtyRegion(m_dropRect);
+ const QModelIndex index = indexAt(event->pos());
+ if (index.isValid() && (index.column() == DolphinModel::Name)) {
+ const KFileItem item = m_controller->itemForIndex(index);
+ if (!item.isNull() && item.isDir()) {
+ m_dropRect = visualRect(index);
+ } else {
+ m_dropRect.setSize(QSize()); // set as invalid
+ }
+ setDirtyRegion(m_dropRect);
+ }
+
+ if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
+ // accept url drops, independently from the destination item
+ event->acceptProposedAction();
+ }
+}
+
+void DolphinDetailsView::dropEvent(QDropEvent* event)
+{
+ const QModelIndex index = indexAt(event->pos());
+ KFileItem item;
+ if (index.isValid() && (index.column() == DolphinModel::Name)) {
+ item = m_controller->itemForIndex(index);
+ }
+ m_controller->indicateDroppedUrls(item, m_controller->url(), event);
+ QTreeView::dropEvent(event);
+}
+
+void DolphinDetailsView::paintEvent(QPaintEvent* event)
+{
+ QTreeView::paintEvent(event);
+ if (m_band.show) {
+ // The following code has been taken from QListView
+ // and adapted to DolphinDetailsView.
+ // (C) 1992-2007 Trolltech ASA
+ QStyleOptionRubberBand opt;
+ opt.initFrom(this);
+ opt.shape = QRubberBand::Rectangle;
+ opt.opaque = false;
+ opt.rect = elasticBandRect();
+
+ QPainter painter(viewport());
+ painter.save();
+ style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
+ painter.restore();
+ }
+}
+
+void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
+{
+ // If the Control modifier is pressed, a multiple selection
+ // is done and DolphinDetailsView::currentChanged() may not
+ // not change the selection in a custom way.
+ m_keyPressed = !(event->modifiers() & Qt::ControlModifier);
+
+ QTreeView::keyPressEvent(event);
+ m_controller->handleKeyPressEvent(event);
+}
+
+void DolphinDetailsView::keyReleaseEvent(QKeyEvent* event)
+{
+ QTreeView::keyReleaseEvent(event);
+ m_keyPressed = false;
+}
+
+void DolphinDetailsView::resizeEvent(QResizeEvent* event)
+{
+ QTreeView::resizeEvent(event);
+ if (m_autoResize) {
+ resizeColumns();
+ }
+}
+
+void DolphinDetailsView::wheelEvent(QWheelEvent* event)
+{
+ if (m_selectionManager != 0) {
+ m_selectionManager->reset();
+ }
+
+ // let Ctrl+wheel events propagate to the DolphinView for icon zooming
+ if (event->modifiers() & Qt::ControlModifier) {
+ event->ignore();
+ return;
+ }
+
+ const int height = m_decorationSize.height();
+ const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
+ verticalScrollBar()->setSingleStep(step);
+ QTreeView::wheelEvent(event);
+}
+
+void DolphinDetailsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
+{
+ QTreeView::currentChanged(current, previous);
+ if (current.isValid() && !m_autoScroller->isActive()) {
+ scrollTo(current);
+ }
+
+ // Stay consistent with QListView: When changing the current index by key presses,
+ // also change the selection.
+ if (m_keyPressed) {
+ selectionModel()->select(current, QItemSelectionModel::ClearAndSelect);
+ }
+}
+
+bool DolphinDetailsView::eventFilter(QObject* watched, QEvent* event)
+{
+ if ((watched == viewport()) && (event->type() == QEvent::Leave)) {
+ // if the mouse is above an item and moved very fast outside the widget,
+ // no viewportEntered() signal might be emitted although the mouse has been moved
+ // above the viewport
+ m_controller->emitViewportEntered();
+ }
+
+ return QTreeView::eventFilter(watched, event);
+}
+
+QModelIndex DolphinDetailsView::indexAt(const QPoint& point) const
+{
+ // the blank portion of the name column counts as empty space
+ const QModelIndex index = QTreeView::indexAt(point);
+ const bool isAboveEmptySpace = !m_useDefaultIndexAt &&
+ (index.column() == KDirModel::Name) && !nameColumnRect(index).contains(point);
+ return isAboveEmptySpace ? QModelIndex() : index;
+}
+
+void DolphinDetailsView::setSelection(const QRect& rect, QItemSelectionModel::SelectionFlags command)
+{
+ // We must override setSelection() as Qt calls it internally and when this happens
+ // we must ensure that the default indexAt() is used.
+ if (!m_band.show) {
+ m_useDefaultIndexAt = true;
+ QTreeView::setSelection(rect, command);
+ m_useDefaultIndexAt = false;
+ } else {
+ // Use our own elastic band selection algorithm
+ updateElasticBandSelection();
+ }
+}
+
+void DolphinDetailsView::scrollTo(const QModelIndex & index, ScrollHint hint)
+{
+ if (!m_ignoreScrollTo) {
+ QTreeView::scrollTo(index, hint);
+ }
+}
+
+void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
+{
+ header()->setSortIndicator(sorting, header()->sortIndicatorOrder());
+}
+
+void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
+{
+ header()->setSortIndicator(header()->sortIndicatorSection(), sortOrder);
+}
+
+void DolphinDetailsView::synchronizeSortingState(int column)
+{
+ // The sorting has already been changed in QTreeView if this slot is
+ // invoked, but Dolphin is not informed about this.
+ DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
+ const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
+ m_controller->indicateSortingChange(sorting);
+ m_controller->indicateSortOrderChange(sortOrder);
+}
+
+void DolphinDetailsView::slotEntered(const QModelIndex& index)
+{
+ if (index.column() == DolphinModel::Name) {
+ m_controller->emitItemEntered(index);
+ } else {
+ m_controller->emitViewportEntered();
+ }
+}
+
+void DolphinDetailsView::updateElasticBand()
+{
+ if (m_band.show) {
+ QRect dirtyRegion(elasticBandRect());
+ const QPoint scrollPos(horizontalScrollBar()->value(), verticalScrollBar()->value());
+ m_band.destination = viewport()->mapFromGlobal(QCursor::pos()) + scrollPos;
+ // Going above the (logical) top-left of the view causes complications during selection;
+ // we may as well prevent it.
+ if (m_band.destination.y() < 0) {
+ m_band.destination.setY(0);
+ }
+ if (m_band.destination.x() < 0) {
+ m_band.destination.setX(0);
+ }
+ dirtyRegion = dirtyRegion.united(elasticBandRect());
+ setDirtyRegion(dirtyRegion);
+ }
+}
+
+QRect DolphinDetailsView::elasticBandRect() const
+{
+ const QPoint scrollPos(horizontalScrollBar()->value(), verticalScrollBar()->value());
+
+ const QPoint topLeft = m_band.origin - scrollPos;
+ const QPoint bottomRight = m_band.destination - scrollPos;
+ return QRect(topLeft, bottomRight).normalized();
+}
+
+void DolphinDetailsView::setZoomLevel(int level)
+{
+ const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
+ DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
+
+ const bool showPreview = m_controller->dolphinView()->showPreview();
+ if (showPreview) {
+ settings->setPreviewSize(size);
+ } else {
+ settings->setIconSize(size);
+ }
+
+ updateDecorationSize(showPreview);
+}
+
+
+void DolphinDetailsView::slotShowPreviewChanged()
+{
+ const DolphinView* view = m_controller->dolphinView();
+ updateDecorationSize(view->showPreview());
+}
+
+void DolphinDetailsView::configureColumns(const QPoint& pos)
+{
+ KMenu popup(this);
+ popup.addTitle(i18nc("@title:menu", "Columns"));
+
+ QHeaderView* headerView = header();
+ for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
+ const int logicalIndex = headerView->logicalIndex(i);
+ const QString text = model()->headerData(i, Qt::Horizontal).toString();
+ QAction* action = popup.addAction(text);
+ action->setCheckable(true);
+ action->setChecked(!headerView->isSectionHidden(logicalIndex));
+ action->setData(i);
+ }
+
+ QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
+ if (activatedAction != 0) {
+ const bool show = activatedAction->isChecked();
+ const int columnIndex = activatedAction->data().toInt();
+
+ KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
+ const KFileItemDelegate::Information info = infoForColumn(columnIndex);
+ if (show) {
+ Q_ASSERT(!list.contains(info));
+ list.append(info);
+ } else {
+ Q_ASSERT(list.contains(info));
+ const int index = list.indexOf(info);
+ list.removeAt(index);
+ }
+
+ m_controller->indicateAdditionalInfoChange(list);
+ setColumnHidden(columnIndex, !show);
+ resizeColumns();
+ }
+}
+
+void DolphinDetailsView::updateColumnVisibility()
+{
+ const KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
+ for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
+ const KFileItemDelegate::Information info = infoForColumn(i);
+ const bool hide = !list.contains(info);
+ if (isColumnHidden(i) != hide) {
+ setColumnHidden(i, hide);
+ }
+ }
+
+ resizeColumns();
+}
+
+void DolphinDetailsView::slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize)
+{
+ Q_UNUSED(logicalIndex);
+ Q_UNUSED(oldSize);
+ Q_UNUSED(newSize);
+ // If the user changes the size of the headers, the autoresize feature should be
+ // turned off. As there is no dedicated interface to find out whether the header
+ // section has been resized by the user or by a resize event, another approach is used.
+ // Attention: Take care when changing the if-condition to verify that there is no
+ // regression in combination with bug 178630 (see fix in comment #8).
+ if ((QApplication::mouseButtons() & Qt::LeftButton) && header()->underMouse()) {
+ disableAutoResizing();
+ }
+}
+
+void DolphinDetailsView::slotActivationChanged(bool active)
+{
+ setAlternatingRowColors(active);
+}
+
+void DolphinDetailsView::disableAutoResizing()
+{
+ m_autoResize = false;
+}
+
+void DolphinDetailsView::requestActivation()
+{
+ m_controller->requestActivation();
+}
+
+void DolphinDetailsView::updateFont()
+{
+ const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
+ Q_ASSERT(settings != 0);
+
+ if (settings->useSystemFont()) {
+ m_font = KGlobalSettings::generalFont();
+ }
+}
+
+void DolphinDetailsView::updateElasticBandSelection()
+{
+ if (!m_band.show) {
+ return;
+ }
+
+ // Ensure the elastic band itself is up-to-date, in
+ // case we are being called due to e.g. a drag event.
+ updateElasticBand();
+
+ // Clip horizontally to the name column, as some filenames will be
+ // longer than the column. We don't clip vertically as origin
+ // may be above or below the current viewport area.
+ const int nameColumnX = header()->sectionPosition(DolphinModel::Name);
+ const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
+ QRect selRect = elasticBandRect().normalized();
+ QRect nameColumnArea(nameColumnX, selRect.y(), nameColumnWidth, selRect.height());
+ selRect = nameColumnArea.intersect(selRect).normalized();
+ // Get the last elastic band rectangle, expressed in viewpoint coordinates.
+ const QPoint scrollPos(horizontalScrollBar()->value(), verticalScrollBar()->value());
+ QRect oldSelRect = QRect(m_band.lastSelectionOrigin - scrollPos, m_band.lastSelectionDestination - scrollPos).normalized();
+
+ if (selRect.isNull()) {
+ selectionModel()->select(m_band.originalSelection, QItemSelectionModel::ClearAndSelect);
+ m_band.ignoreOldInfo = true;
+ return;
+ }
+
+ if (!m_band.ignoreOldInfo) {
+ // Do some quick checks to see if we can rule out the need to
+ // update the selection.
+ Q_ASSERT(uniformRowHeights());
+ QModelIndex dummyIndex = model()->index(0, 0);
+ if (!dummyIndex.isValid()) {
+ // No items in the model presumably.
+ return;
+ }
+
+ // If the elastic band does not cover the same rows as before, we'll
+ // need to re-check, and also invalidate the old item distances.
+ const int rowHeight = QTreeView::rowHeight(dummyIndex);
+ const bool coveringSameRows =
+ (selRect.top() / rowHeight == oldSelRect.top() / rowHeight) &&
+ (selRect.bottom() / rowHeight == oldSelRect.bottom() / rowHeight);
+ if (coveringSameRows) {
+ // Covering the same rows, but have we moved far enough horizontally
+ // that we might have (de)selected some other items?
+ const bool itemSelectionChanged =
+ ((selRect.left() > oldSelRect.left()) &&
+ (selRect.left() > m_band.insideNearestLeftEdge)) ||
+ ((selRect.left() < oldSelRect.left()) &&
+ (selRect.left() <= m_band.outsideNearestLeftEdge)) ||
+ ((selRect.right() < oldSelRect.right()) &&
+ (selRect.left() >= m_band.insideNearestRightEdge)) ||
+ ((selRect.right() > oldSelRect.right()) &&
+ (selRect.right() >= m_band.outsideNearestRightEdge));
+
+ if (!itemSelectionChanged) {
+ return;
+ }
+ }
+ }
+ else {
+ // This is the only piece of optimization data that needs to be explicitly
+ // discarded.
+ m_band.lastSelectionOrigin = QPoint();
+ m_band.lastSelectionDestination = QPoint();
+ oldSelRect = selRect;
+ }
+
+ // Do the selection from scratch. Force a update of the horizontal distances info.
+ m_band.insideNearestLeftEdge = nameColumnX + nameColumnWidth + 1;
+ m_band.insideNearestRightEdge = nameColumnX - 1;
+ m_band.outsideNearestLeftEdge = nameColumnX - 1;
+ m_band.outsideNearestRightEdge = nameColumnX + nameColumnWidth + 1;
+
+ // Include the old selection rect as well, so we can deselect
+ // items that were inside it but not in the new selRect.
+ const QRect boundingRect = selRect.united(oldSelRect).normalized();
+ if (boundingRect.isNull()) {
+ return;
+ }
+
+ // Get the index of the item in this row in the name column.
+ // TODO - would this still work if the columns could be re-ordered?
+ QModelIndex startIndex = QTreeView::indexAt(boundingRect.topLeft());
+ if (startIndex.parent().isValid()) {
+ startIndex = startIndex.parent().child(startIndex.row(), KDirModel::Name);
+ } else {
+ startIndex = model()->index(startIndex.row(), KDirModel::Name);
+ }
+ if (!startIndex.isValid()) {
+ selectionModel()->select(m_band.originalSelection, QItemSelectionModel::ClearAndSelect);
+ m_band.ignoreOldInfo = true;
+ return;
+ }
+
+ // Go through all indexes between the top and bottom of boundingRect, and
+ // update the selection.
+ const int verticalCutoff = boundingRect.bottom();
+ QModelIndex currIndex = startIndex;
+ QModelIndex lastIndex;
+ bool allItemsInBoundDone = false;
+
+ // Calling selectionModel()->select(...) for each item that needs to be
+ // toggled is slow as each call emits selectionChanged(...) so store them
+ // and do the selection toggle in one batch.
+ QItemSelection itemsToToggle;
+ // QItemSelection's deal with continuous ranges of indexes better than
+ // single indexes, so try to portion items that need to be toggled into ranges.
+ bool formingToggleIndexRange = false;
+ QModelIndex toggleIndexRangeBegin = QModelIndex();
+
+ do {
+ QRect currIndexRect = nameColumnRect(currIndex);
+
+ // Update some optimization info as we go.
+ const int cr = currIndexRect.right();
+ const int cl = currIndexRect.left();
+ const int sl = selRect.left();
+ const int sr = selRect.right();
+ // "The right edge of the name is outside of the rect but nearer than m_outsideNearestLeft", etc
+ if ((cr < sl && cr > m_band.outsideNearestLeftEdge)) {
+ m_band.outsideNearestLeftEdge = cr;
+ }
+ if ((cl > sr && cl < m_band.outsideNearestRightEdge)) {
+ m_band.outsideNearestRightEdge = cl;
+ }
+ if ((cl >= sl && cl <= sr && cl > m_band.insideNearestRightEdge)) {
+ m_band.insideNearestRightEdge = cl;
+ }
+ if ((cr >= sl && cr <= sr && cr < m_band.insideNearestLeftEdge)) {
+ m_band.insideNearestLeftEdge = cr;
+ }
+
+ bool currentlySelected = selectionModel()->isSelected(currIndex);
+ bool originallySelected = m_band.originalSelection.contains(currIndex);
+ bool intersectsSelectedRect = currIndexRect.intersects(selRect);
+ bool shouldBeSelected = (intersectsSelectedRect && !originallySelected) || (!intersectsSelectedRect && originallySelected);
+ bool needToToggleItem = (currentlySelected && !shouldBeSelected) || (!currentlySelected && shouldBeSelected);
+ if (needToToggleItem && !formingToggleIndexRange) {
+ toggleIndexRangeBegin = currIndex;
+ formingToggleIndexRange = true;
+ }
+
+ // NOTE: indexBelow actually walks up and down expanded trees for us.
+ QModelIndex nextIndex = indexBelow(currIndex);
+ allItemsInBoundDone = !nextIndex.isValid() || currIndexRect.top() > verticalCutoff;
+
+ const bool commitToggleIndexRange = formingToggleIndexRange &&
+ (!needToToggleItem ||
+ allItemsInBoundDone ||
+ currIndex.parent() != toggleIndexRangeBegin.parent());
+ if (commitToggleIndexRange) {
+ formingToggleIndexRange = false;
+ // If this is the last item in the bounds and it is also the beginning of a range,
+ // don't toggle lastIndex - it will already have been dealt with.
+ if (!allItemsInBoundDone || toggleIndexRangeBegin != currIndex) {
+ itemsToToggle.select(toggleIndexRangeBegin, lastIndex);
+ }
+ // Need to start a new range immediately with currIndex?
+ if (needToToggleItem) {
+ toggleIndexRangeBegin = currIndex;
+ formingToggleIndexRange = true;
+ }
+ if (allItemsInBoundDone && needToToggleItem) {
+ // Toggle the very last item in the bounds.
+ itemsToToggle.select(currIndex, currIndex);
+ }
+ }
+
+ // next item
+ lastIndex = currIndex;
+ currIndex = nextIndex;
+ } while (!allItemsInBoundDone);
+
+ selectionModel()->select(itemsToToggle, QItemSelectionModel::Toggle);
+
+ m_band.lastSelectionOrigin = m_band.origin;
+ m_band.lastSelectionDestination = m_band.destination;
+ m_band.ignoreOldInfo = false;
+}
+
+void DolphinDetailsView::updateDecorationSize(bool showPreview)
+{
+ DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
+ const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
+ setIconSize(QSize(iconSize, iconSize));
+ m_decorationSize = QSize(iconSize, iconSize);
+
+ if (m_selectionManager != 0) {
+ m_selectionManager->reset();
+ }
+
+ doItemsLayout();
+}
+
+KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
+{
+ KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
+
+ switch (columnIndex) {
+ case DolphinModel::Size: info = KFileItemDelegate::Size; break;
+ case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
+ case DolphinModel::Permissions: info = KFileItemDelegate::Permissions; break;
+ case DolphinModel::Owner: info = KFileItemDelegate::Owner; break;
+ case DolphinModel::Group: info = KFileItemDelegate::OwnerAndGroup; break;
+ case DolphinModel::Type: info = KFileItemDelegate::FriendlyMimeType; break;
+ default: break;
+ }
+
+ return info;
+}
+
+void DolphinDetailsView::resizeColumns()
+{
+ // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
+ // around 3 seconds for each (!) resize operation when having > 10000 items).
+ // This gets a problem especially when opening large directories, where several
+ // resize operations are received for showing the currently available items during
+ // loading (the application hangs around 20 seconds when loading > 10000 items).
+
+ QHeaderView* headerView = header();
+ QFontMetrics fontMetrics(viewport()->font());
+
+ int columnWidth[KDirModel::ColumnCount];
+ columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
+ columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
+ columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
+ columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
+ columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
+ columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
+
+ int requiredWidth = 0;
+ for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
+ if (!isColumnHidden(i)) {
+ columnWidth[i] += 20; // provide a default gap
+ requiredWidth += columnWidth[i];
+ headerView->resizeSection(i, columnWidth[i]);
+ }
+ }
+
+ // resize the name column in a way that the whole available width is used
+ columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
+
+ const int minNameWidth = 300;
+ if (columnWidth[KDirModel::Name] < minNameWidth) {
+ columnWidth[KDirModel::Name] = minNameWidth;
+
+ // It might be possible that the name column width can be
+ // decreased without clipping any text. For performance
+ // reasons the exact necessary width for full visible names is
+ // only checked for up to 200 items:
+ const int rowCount = model()->rowCount();
+ if (rowCount < 200) {
+ const int nameWidth = sizeHintForColumn(DolphinModel::Name);
+ if (nameWidth + requiredWidth <= viewport()->width()) {
+ columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
+ } else if (nameWidth < minNameWidth) {
+ columnWidth[KDirModel::Name] = nameWidth;
+ }
+ }
+ }
+
+ headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
+}
+
+QRect DolphinDetailsView::nameColumnRect(const QModelIndex& index) const
+{
+ QRect rect = visualRect(index);
+ const KFileItem item = m_controller->itemForIndex(index);
+ if (!item.isNull()) {
+ const int width = DolphinFileItemDelegate::nameColumnWidth(item.text(), viewOptions());
+ rect.setWidth(width);
+ }
+
+ return rect;
+}
+
+DolphinDetailsView::ElasticBand::ElasticBand() :
+ show(false),
+ origin(),
+ destination(),
+ lastSelectionOrigin(),
+ lastSelectionDestination(),
+ ignoreOldInfo(true),
+ outsideNearestLeftEdge(0),
+ outsideNearestRightEdge(0),
+ insideNearestLeftEdge(0),
+ insideNearestRightEdge(0)
+{
+}
+
#include "dolphindetailsview.moc"
projects / dolphin.git / blobdiff