]> cloud.milkyroute.net Git - dolphin.git/blobdiff - src/dolphindetailsview.cpp
Fix the problem of the tree view. When we are expanding too many nodes (or very large...
[dolphin.git] / src / dolphindetailsview.cpp
index dfd7018bb8b20e3ca326eb01871e7a062f531634..bd2a75f61645110542cb76c1db5d820e279ceabe 100644 (file)
 
 #include "dolphindetailsview.h"
 
+#include "dolphinmodel.h"
 #include "dolphincontroller.h"
 #include "dolphinsettings.h"
 #include "dolphinsortfilterproxymodel.h"
+#include "draganddrophelper.h"
 #include "viewproperties.h"
 
 #include "dolphin_detailsmodesettings.h"
 
 #include <kdirmodel.h>
+#include <klocale.h>
+#include <kmenu.h>
 
+#include <QAbstractProxyModel>
+#include <QAction>
 #include <QApplication>
 #include <QHeaderView>
 #include <QRubberBand>
@@ -38,6 +44,9 @@
 DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
     QTreeView(parent),
     m_controller(controller),
+    m_font(),
+    m_decorationSize(),
+    m_clearAdditionalInfo(false),
     m_dragging(false),
     m_showElasticBand(false),
     m_elasticBandOrigin(),
@@ -53,6 +62,7 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
     setDragDropMode(QAbstractItemView::DragDrop);
     setDropIndicatorShown(false);
     setAlternatingRowColors(true);
+    setItemsExpandable(false);
 
     setMouseTracking(true);
     viewport()->setAttribute(Qt::WA_Hover);
@@ -61,8 +71,12 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
     setSortIndicatorSection(props.sorting());
     setSortIndicatorOrder(props.sortOrder());
 
-    connect(header(), SIGNAL(sectionClicked(int)),
+    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(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
@@ -75,10 +89,10 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
     // RETURN-key in keyPressEvent().
     if (KGlobalSettings::singleClick()) {
         connect(this, SIGNAL(clicked(const QModelIndex&)),
-                this, SLOT(slotItemActivated(const QModelIndex&)));
+                this, SLOT(triggerItem(const QModelIndex&)));
     } else {
         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
-                this, SLOT(slotItemActivated(const QModelIndex&)));
+                this, SLOT(triggerItem(const QModelIndex&)));
     }
     connect(this, SIGNAL(entered(const QModelIndex&)),
             this, SLOT(slotEntered(const QModelIndex&)));
@@ -88,19 +102,27 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
             this, SLOT(zoomIn()));
     connect(controller, SIGNAL(zoomOut()),
             this, SLOT(zoomOut()));
+    connect(controller->dolphinView(), SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
+            this, SLOT(updateColumnVisibility()));
 
     // apply the details mode settings to the widget
     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
     Q_ASSERT(settings != 0);
 
-    m_viewOptions = QTreeView::viewOptions();
+    m_font = QFont(settings->fontFamily(), settings->fontSize());
 
-    QFont font(settings->fontFamily(), settings->fontSize());
-    font.setItalic(settings->italicFont());
-    font.setBold(settings->boldFont());
-    m_viewOptions.font = font;
+// TODO: Remove this check when 4.3.2 is released and KDE requires it... this
+//       check avoids a division by zero happening on versions before 4.3.1.
+//       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
+//       ereslibre
+#if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
+    setVerticalScrollMode(QTreeView::ScrollPerPixel);
+    setHorizontalScrollMode(QTreeView::ScrollPerPixel);
+#endif
 
     updateDecorationSize();
+
+    setFocus();
 }
 
 DolphinDetailsView::~DolphinDetailsView()
@@ -110,44 +132,38 @@ DolphinDetailsView::~DolphinDetailsView()
 bool DolphinDetailsView::event(QEvent* event)
 {
     if (event->type() == QEvent::Polish) {
-        // Assure that by respecting the available width that:
-        // - the 'Name' column is stretched as large as possible
-        // - the remaining columns are as small as possible
         QHeaderView* headerView = header();
-        headerView->setStretchLastSection(false);
-        headerView->setResizeMode(QHeaderView::ResizeToContents);
-        headerView->setResizeMode(0, QHeaderView::Stretch);
-
-        // hide columns if this is indicated by the settings
-        const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-        Q_ASSERT(settings != 0);
-        if (!settings->showDate()) {
-            hideColumn(KDirModel::ModifiedTime);
-        }
-
-        if (!settings->showPermissions()) {
-            hideColumn(KDirModel::Permissions);
-        }
+        headerView->setResizeMode(QHeaderView::Interactive);
+        headerView->setMovable(false);
 
-        if (!settings->showOwner()) {
-            hideColumn(KDirModel::Owner);
-        }
-
-        if (!settings->showGroup()) {
-            hideColumn(KDirModel::Group);
-        }
+        updateColumnVisibility();
 
-        if (!settings->showType()) {
-            hideColumn(KDirModel::Type);
+        hideColumn(DolphinModel::Rating);
+        hideColumn(DolphinModel::Tags);
+    }
+// TODO: Remove this check when 4.3.2 is released and KDE requires it... this
+//       check avoids a division by zero happening on versions before 4.3.1.
+//       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
+//       ereslibre
+#if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
+    else if (event->type() == QEvent::UpdateRequest) {
+        // a wheel movement will scroll 4 items
+        if (model()->rowCount() > 0) {
+            verticalScrollBar()->setSingleStep((sizeHintForRow(0) / 3) * 4);
         }
     }
+#endif
 
     return QTreeView::event(event);
 }
 
 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 {
-    return m_viewOptions;
+    QStyleOptionViewItem viewOptions = QTreeView::viewOptions();
+    viewOptions.font = m_font;
+    viewOptions.showDecorationSelected = true;
+    viewOptions.decorationSize = m_decorationSize;
+    return viewOptions;
 }
 
 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
@@ -158,12 +174,12 @@ void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 
 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 {
-    m_controller->triggerActivation();
+    m_controller->requestActivation();
 
     QTreeView::mousePressEvent(event);
 
     const QModelIndex index = indexAt(event->pos());
-    if (!index.isValid() || (index.column() != KDirModel::Name)) {
+    if (!index.isValid() || (index.column() != DolphinModel::Name)) {
         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
             clearSelection();
@@ -183,9 +199,27 @@ void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 
 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 {
-    QTreeView::mouseMoveEvent(event);
     if (m_showElasticBand) {
+        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
+            clearSelection();
+
+            const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
+            QRect selRect = QRect(m_elasticBandOrigin, m_elasticBandDestination).normalized();
+            const QRect nameColumnsRect(0, 0, nameColumnWidth, viewport()->height());
+            selRect = nameColumnsRect.intersected(selRect);
+
+            setSelection(selRect, QItemSelectionModel::Select);
+        }
+
+        QTreeView::mouseMoveEvent(event);
         updateElasticBand();
+    } else {
+        QTreeView::mouseMoveEvent(event);
     }
 }
 
@@ -198,6 +232,11 @@ void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
     }
 }
 
+void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
+{
+    DragAndDropHelper::startDrag(this, supportedActions);
+}
+
 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 {
     if (event->mimeData()->hasUrls()) {
@@ -227,11 +266,16 @@ void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* 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() != KDirModel::Name)) {
+    if (!index.isValid() || (index.column() != DolphinModel::Name)) {
         m_dragging = false;
     } else {
         m_dragging = true;
-        m_dropRect = visualRect(index);
+        const KFileItem item = itemForIndex(index);
+        if (!item.isNull() && item.isDir()) {
+            m_dropRect = visualRect(index);
+        } else {
+            m_dropRect.setSize(QSize()); // set as invalid
+        }
         setDirtyRegion(m_dropRect);
     }
 }
@@ -241,9 +285,14 @@ void DolphinDetailsView::dropEvent(QDropEvent* event)
     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
     if (!urls.isEmpty()) {
         event->acceptProposedAction();
+        const QModelIndex index = indexAt(event->pos());
+        KFileItem item;
+        if (index.isValid() && (index.column() == DolphinModel::Name)) {
+            item = itemForIndex(index);
+        }
         m_controller->indicateDroppedUrls(urls,
-                                          indexAt(event->pos()),
-                                          event->source());
+                                          m_controller->url(),
+                                          item);
     }
     QTreeView::dropEvent(event);
     m_dragging = false;
@@ -270,17 +319,51 @@ void DolphinDetailsView::paintEvent(QPaintEvent* event)
 
     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
     if (m_dragging) {
-        const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
-        DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
+        const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
+        DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
     }
 }
 
 void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 {
     QTreeView::keyPressEvent(event);
-    if (event->key() == Qt::Key_Return) {
-        m_controller->triggerItem(selectionModel()->currentIndex());
+
+    const QItemSelectionModel* selModel = selectionModel();
+    const QModelIndex currentIndex = selModel->currentIndex();
+    const bool trigger = currentIndex.isValid()
+                         && (event->key() == Qt::Key_Return)
+                         && (selModel->selectedIndexes().count() <= 1);
+    if (trigger) {
+        triggerItem(currentIndex);
+    }
+}
+
+void DolphinDetailsView::resizeEvent(QResizeEvent* event)
+{
+    QTreeView::resizeEvent(event);
+
+    // TODO: There seems to be no easy way to find out whether the resize event
+    // has been triggered because of resizing the window or by adjusting the column-width
+    // by a left mouse-click (the columns should only be resized automatically when the window
+    // size is adjusted). The following workaround works well, but it should be
+    // considered solving this in a more transparent way.
+    if (!(QApplication::mouseButtons() & Qt::LeftButton)) {
+        resizeColumns();
+    }
+}
+
+void DolphinDetailsView::closeEvent(QCloseEvent* event)
+{
+    if (m_clearAdditionalInfo) {
+        disconnect(m_controller->dolphinView(), SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
+                this, SLOT(updateColumnVisibility()));
+
+        KFileItemDelegate::InformationList info;
+        info.append(KFileItemDelegate::NoInformation);
+        m_controller->indicateAdditionalInfoChange(info);
+        m_clearAdditionalInfo = false;
     }
+    QTreeView::closeEvent(event);
 }
 
 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
@@ -308,9 +391,9 @@ void DolphinDetailsView::synchronizeSortingState(int column)
 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 {
     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
-    const int nameColumnWidth = header()->sectionSize(KDirModel::Name);
+    const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
     if (pos.x() < nameColumnWidth) {
-        m_controller->emitItemEntered(index);
+        m_controller->emitItemEntered(itemForIndex(index));
     }
     else {
         m_controller->emitViewportEntered();
@@ -326,14 +409,20 @@ void DolphinDetailsView::updateElasticBand()
     setDirtyRegion(dirtyRegion);
 }
 
+QRect DolphinDetailsView::elasticBandRect() const
+{
+    const QPoint pos(contentsPos());
+    const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
+    return QRect(topLeft, m_elasticBandDestination).normalized();
+}
+
 void DolphinDetailsView::zoomIn()
 {
     if (isZoomInPossible()) {
         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-        // TODO: get rid of K3Icon sizes
         switch (settings->iconSize()) {
-        case K3Icon::SizeSmall:  settings->setIconSize(K3Icon::SizeMedium); break;
-        case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeLarge); break;
+        case KIconLoader::SizeSmall:  settings->setIconSize(KIconLoader::SizeMedium); break;
+        case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeLarge); break;
         default: Q_ASSERT(false); break;
         }
         updateDecorationSize();
@@ -344,33 +433,108 @@ void DolphinDetailsView::zoomOut()
 {
     if (isZoomOutPossible()) {
         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-        // TODO: get rid of K3Icon sizes
         switch (settings->iconSize()) {
-        case K3Icon::SizeLarge:  settings->setIconSize(K3Icon::SizeMedium); break;
-        case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeSmall); break;
+        case KIconLoader::SizeLarge:  settings->setIconSize(KIconLoader::SizeMedium); break;
+        case KIconLoader::SizeMedium: settings->setIconSize(KIconLoader::SizeSmall); break;
         default: Q_ASSERT(false); break;
         }
         updateDecorationSize();
     }
 }
 
+void DolphinDetailsView::triggerItem(const QModelIndex& index)
+{
+    const KFileItem item = itemForIndex(index);
+    if (index.isValid() && (index.column() == KDirModel::Name)) {
+        m_controller->triggerItem(item);
+    } else {
+        clearSelection();
+        m_controller->emitItemEntered(item);
+    }
+}
+
+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);
+    }
+}
+
+void DolphinDetailsView::updateColumnVisibility()
+{
+    KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
+    const bool useDefaultColumns = !isVisible() &&
+                                   (list.isEmpty() ||
+                                    list.contains(KFileItemDelegate::NoInformation));
+    if (useDefaultColumns) {
+        // Using the details view without any additional information (-> additional column)
+        // makes no sense and leads to a usability problem as no viewport area is available
+        // anymore. Hence as fallback provide at least a size and date column.
+        list.clear();
+        list.append(KFileItemDelegate::Size);
+        list.append(KFileItemDelegate::ModificationTime);
+        m_controller->indicateAdditionalInfoChange(list);
+        m_clearAdditionalInfo = true;
+    }
+
+    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);
+            m_clearAdditionalInfo = false;
+        }
+    }
+
+    resizeColumns();
+}
+
 bool DolphinDetailsView::isZoomInPossible() const
 {
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-    return settings->iconSize() < K3Icon::SizeLarge;
+    return settings->iconSize() < KIconLoader::SizeLarge;
 }
 
 bool DolphinDetailsView::isZoomOutPossible() const
 {
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-    return settings->iconSize() > K3Icon::SizeSmall;
+    return settings->iconSize() > KIconLoader::SizeSmall;
 }
 
 void DolphinDetailsView::updateDecorationSize()
 {
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
     const int iconSize = settings->iconSize();
-    m_viewOptions.decorationSize = QSize(iconSize, iconSize);
+    m_decorationSize = QSize(iconSize, iconSize);
 
     m_controller->setZoomInPossible(isZoomInPossible());
     m_controller->setZoomOutPossible(isZoomOutPossible());
@@ -396,26 +560,65 @@ QPoint DolphinDetailsView::contentsPos() const
     return QPoint(0, y);
 }
 
-QRect DolphinDetailsView::elasticBandRect() const
+KFileItem DolphinDetailsView::itemForIndex(const QModelIndex& index) const
 {
-    const QPoint pos(contentsPos());
-    const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
-    return QRect(topLeft, m_elasticBandDestination).normalized();
+    QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(model());
+    KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
+    const QModelIndex dirIndex = proxyModel->mapToSource(index);
+    return dirModel->itemForIndex(dirIndex);
 }
 
-static bool isValidNameIndex(const QModelIndex& index)
+KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
 {
-    return index.isValid() && (index.column() == KDirModel::Name);
+    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::slotItemActivated(const QModelIndex& index)
+void DolphinDetailsView::resizeColumns()
 {
-    if (!isValidNameIndex(index)) {
-        clearSelection();
-        m_controller->emitItemEntered(index);
-    } else {
-        m_controller->triggerItem(index);
+    // 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;
+    if (columnWidth[KDirModel::Name] < 120) {
+        columnWidth[KDirModel::Name] = 120;
     }
+    headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 }
 
 #include "dolphindetailsview.moc"