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[dolphin.git] / src / dolphindetailsview.cpp
index ee123b65cac088a5d27a63c4fa89c93e7021e20b..55851dc95da294b3f030b6fc2373f7adb1df3399 100644 (file)
@@ -24,6 +24,7 @@
 #include "dolphincontroller.h"
 #include "dolphinsettings.h"
 #include "dolphinsortfilterproxymodel.h"
+#include "draganddrophelper.h"
 #include "viewproperties.h"
 
 #include "dolphin_detailsmodesettings.h"
@@ -43,6 +44,7 @@
 DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
     QTreeView(parent),
     m_controller(controller),
+    m_clearAdditionalInfo(false),
     m_dragging(false),
     m_showElasticBand(false),
     m_elasticBandOrigin(),
@@ -133,13 +135,8 @@ 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);
+        headerView->setResizeMode(QHeaderView::Fixed);
         headerView->setMovable(false);
 
         updateColumnVisibility();
@@ -216,6 +213,11 @@ void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
     }
 }
 
+void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
+{
+    DragAndDropHelper::startDrag(this, supportedActions);
+}
+
 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 {
     if (event->mimeData()->hasUrls()) {
@@ -249,7 +251,12 @@ void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
         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);
     }
 }
@@ -260,13 +267,13 @@ void DolphinDetailsView::dropEvent(QDropEvent* event)
     if (!urls.isEmpty()) {
         event->acceptProposedAction();
         const QModelIndex index = indexAt(event->pos());
+        KFileItem item;
         if (index.isValid() && (index.column() == DolphinModel::Name)) {
-            const KFileItem item = itemForIndex(index);
-            m_controller->indicateDroppedUrls(urls,
-                                              m_controller->url(),
-                                              item,
-                                              event->source());
+            item = itemForIndex(index);
         }
+        m_controller->indicateDroppedUrls(urls,
+                                          m_controller->url(),
+                                          item);
     }
     QTreeView::dropEvent(event);
     m_dragging = false;
@@ -294,7 +301,7 @@ 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);
+        DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
     }
 }
 
@@ -315,34 +322,21 @@ void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 {
     QTreeView::resizeEvent(event);
+    resizeColumns();
+}
 
-    // assure that the width of the name-column does not get too small
-    const int minWidth = 120;
-    QHeaderView* headerView = header();
-    bool useFixedWidth = (headerView->sectionSize(KDirModel::Name) <= minWidth)
-                         && (headerView->resizeMode(0) != QHeaderView::Fixed);
-    if (useFixedWidth) {
-        // the current width of the name-column is too small, hence
-        // use a fixed size
-        headerView->setResizeMode(QHeaderView::Fixed);
-        headerView->setResizeMode(0, QHeaderView::Fixed);
-        headerView->resizeSection(KDirModel::Name, minWidth);
-    } else if (headerView->resizeMode(0) != QHeaderView::Stretch) {
-        // check whether there is enough available viewport width
-        // to automatically resize the columns
-        const int availableWidth = viewport()->width();
-
-        int headerWidth = 0;
-        const int count = headerView->count();
-        for (int i = 0; i < count; ++i) {
-            headerWidth += headerView->sectionSize(i);
-        }
-
-        if (headerWidth < availableWidth) {
-            headerView->setResizeMode(QHeaderView::ResizeToContents);
-            headerView->setResizeMode(0, QHeaderView::Stretch);
-        }
+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)
@@ -453,17 +447,7 @@ void DolphinDetailsView::configureColumns(const QPoint& pos)
         const int columnIndex = activatedAction->data().toInt();
 
         KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
-        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;
-        }
-
+        const KFileItemDelegate::Information info = infoForColumn(columnIndex);
         if (show) {
             Q_ASSERT(!list.contains(info));
             list.append(info);
@@ -481,7 +465,10 @@ void DolphinDetailsView::configureColumns(const QPoint& pos)
 void DolphinDetailsView::updateColumnVisibility()
 {
     KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
-    if (list.isEmpty() || list.contains(KFileItemDelegate::NoInformation)) {
+    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.
@@ -489,14 +476,19 @@ void DolphinDetailsView::updateColumnVisibility()
         list.append(KFileItemDelegate::Size);
         list.append(KFileItemDelegate::ModificationTime);
         m_controller->indicateAdditionalInfoChange(list);
+        m_clearAdditionalInfo = true;
     }
 
-    setColumnHidden(DolphinModel::Size,         !list.contains(KFileItemDelegate::Size));
-    setColumnHidden(DolphinModel::ModifiedTime, !list.contains(KFileItemDelegate::ModificationTime));
-    setColumnHidden(DolphinModel::Permissions,  !list.contains(KFileItemDelegate::Permissions));
-    setColumnHidden(DolphinModel::Owner,        !list.contains(KFileItemDelegate::Owner));
-    setColumnHidden(DolphinModel::Group,        !list.contains(KFileItemDelegate::OwnerAndGroup));
-    setColumnHidden(DolphinModel::Type,         !list.contains(KFileItemDelegate::FriendlyMimeType));
+    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
@@ -549,4 +541,57 @@ KFileItem DolphinDetailsView::itemForIndex(const QModelIndex& index) const
     return dirModel->itemForIndex(dirIndex);
 }
 
+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;
+    if (columnWidth[KDirModel::Name] < 120) {
+        columnWidth[KDirModel::Name] = 120;
+    }
+    headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
+}
+
 #include "dolphindetailsview.moc"