X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/fd060ce7f67a95b1e3f41d3ff091595f34704920..b1c9b5126d:/src/dolphincolumnview.cpp

diff --git a/src/dolphincolumnview.cpp b/src/dolphincolumnview.cpp
index 41fb89f97..3b3e86a75 100644
--- a/src/dolphincolumnview.cpp
+++ b/src/dolphincolumnview.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at)                  *
+ *   Copyright (C) 2007 by Peter Penz <peter.penz@gmx.at>                  *
  *                                                                         *
  *   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  *
@@ -19,116 +19,594 @@
 
 #include "dolphincolumnview.h"
 
+#include "dolphincolumnwidget.h"
 #include "dolphincontroller.h"
-#include "dolphinsettings.h"
+#include "settings/dolphinsettings.h"
+#include "zoomlevelinfo.h"
 
-//#include "dolphin_iconsmodesettings.h"
+#include "dolphin_columnmodesettings.h"
 
-#include <kdirmodel.h>
-#include <kfileitem.h>
-#include <kfileitemdelegate.h>
+#include <kfilepreviewgenerator.h>
 
-#include <QAbstractProxyModel>
 #include <QPoint>
+#include <QScrollBar>
+#include <QTimeLine>
 
 DolphinColumnView::DolphinColumnView(QWidget* parent, DolphinController* controller) :
-    QColumnView(parent),
-    m_controller(controller)
+    QAbstractItemView(parent),
+    m_controller(controller),
+    m_active(false),
+    m_index(-1),
+    m_contentX(0),
+    m_columns(),
+    m_emptyViewport(0),
+    m_animation(0),
+    m_nameFilter()
 {
     Q_ASSERT(controller != 0);
 
-    viewport()->setAttribute(Qt::WA_Hover);
+    setAcceptDrops(true);
+    setDragDropMode(QAbstractItemView::DragDrop);
+    setDropIndicatorShown(false);
+    setSelectionMode(ExtendedSelection);
+    setFocusPolicy(Qt::NoFocus);
+    setFrameShape(QFrame::NoFrame);
+    setLayoutDirection(Qt::LeftToRight);
 
-    connect(this, SIGNAL(clicked(const QModelIndex&)),
-            controller, SLOT(triggerItem(const QModelIndex&)));
-    connect(this, SIGNAL(activated(const QModelIndex&)),
-            controller, SLOT(triggerItem(const QModelIndex&)));
-    connect(controller, SIGNAL(showPreviewChanged(bool)),
-            this, SLOT(updateGridSize(bool)));
-    connect(controller, SIGNAL(zoomIn()),
-            this, SLOT(zoomIn()));
-    connect(controller, SIGNAL(zoomOut()),
-            this, SLOT(zoomOut()));
+    connect(this, SIGNAL(viewportEntered()),
+            controller, SLOT(emitViewportEntered()));
+    connect(controller, SIGNAL(zoomLevelChanged(int)),
+            this, SLOT(setZoomLevel(int)));
+    connect(controller, SIGNAL(activationChanged(bool)),
+            this, SLOT(updateColumnsBackground(bool)));
 
-    // apply the icons mode settings to the widget
-    //const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
-    //Q_ASSERT(settings != 0);
+    const DolphinView* view = controller->dolphinView();
+    connect(view, SIGNAL(sortingChanged(DolphinView::Sorting)),
+            this, SLOT(slotSortingChanged(DolphinView::Sorting)));
+    connect(view, SIGNAL(sortOrderChanged(Qt::SortOrder)),
+            this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
+    connect(view, SIGNAL(showHiddenFilesChanged()),
+            this, SLOT(slotShowHiddenFilesChanged()));
+    connect(view, SIGNAL(showPreviewChanged()),
+            this, SLOT(slotShowPreviewChanged()));
 
-    m_viewOptions = QColumnView::viewOptions();
+    connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
+            this, SLOT(moveContentHorizontally(int)));
 
-    /*QFont font(settings->fontFamily(), settings->fontSize());
-    font.setItalic(settings->italicFont());
-    font.setBold(settings->boldFont());
-    m_viewOptions.font = font;
+    m_animation = new QTimeLine(500, this);
+    connect(m_animation, SIGNAL(frameChanged(int)), horizontalScrollBar(), SLOT(setValue(int)));
 
-    updateGridSize(controller->showPreview());
+    DolphinColumnWidget* column = new DolphinColumnWidget(viewport(), this, m_controller->url());
+    m_columns.append(column);
+    setActiveColumnIndex(0);
 
-    if (settings->arrangement() == QColumnView::TopToBottom) {
-        setFlow(QColumnView::LeftToRight);
-        m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
-    }
-    else {
-        setFlow(QColumnView::TopToBottom);
-        m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
-    }*/
+    m_emptyViewport = new QFrame(viewport());
+    m_emptyViewport->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
+
+    updateDecorationSize(view->showPreview());
+    updateColumnsBackground(true);
 }
 
 DolphinColumnView::~DolphinColumnView()
 {
 }
 
-QStyleOptionViewItem DolphinColumnView::viewOptions() const
+QModelIndex DolphinColumnView::indexAt(const QPoint& point) const
+{
+    foreach (DolphinColumnWidget* column, m_columns) {
+        const QModelIndex index = column->indexAt(columnPosition(column, point));
+        if (index.isValid()) {
+            return index;
+        }
+    }
+
+    return QModelIndex();
+}
+
+KFileItem DolphinColumnView::itemAt(const QPoint& point) const
+{
+    foreach (DolphinColumnWidget* column, m_columns) {
+        KFileItem item = column->itemAt(columnPosition(column, point));
+        if (!item.isNull()) {
+            return item;
+        }
+    }
+
+    return KFileItem();
+}
+
+void DolphinColumnView::scrollTo(const QModelIndex& index, ScrollHint hint)
+{
+    activeColumn()->scrollTo(index, hint);
+}
+
+QRect DolphinColumnView::visualRect(const QModelIndex& index) const
+{
+    return activeColumn()->visualRect(index);
+}
+
+void DolphinColumnView::invertSelection()
+{
+    QItemSelectionModel* selectionModel = activeColumn()->selectionModel();
+    const QAbstractItemModel* itemModel = selectionModel->model();
+
+    const QModelIndex topLeft = itemModel->index(0, 0);
+    const QModelIndex bottomRight = itemModel->index(itemModel->rowCount() - 1,
+                                                     itemModel->columnCount() - 1);
+
+    const QItemSelection selection(topLeft, bottomRight);
+    selectionModel->select(selection, QItemSelectionModel::Toggle);
+}
+
+void DolphinColumnView::reload()
+{
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->reload();
+    }
+}
+
+void DolphinColumnView::setRootUrl(const KUrl& url)
+{
+    removeAllColumns();
+    m_columns[0]->setUrl(url);
+}
+
+void DolphinColumnView::setNameFilter(const QString& nameFilter)
+{
+    if (nameFilter != m_nameFilter) {
+        m_nameFilter = nameFilter;
+        foreach (DolphinColumnWidget* column, m_columns) {
+            column->setNameFilter(nameFilter);
+        }
+    }
+}
+
+QString DolphinColumnView::nameFilter() const
+{
+    return m_nameFilter;
+}
+
+KUrl DolphinColumnView::rootUrl() const
+{
+    return m_columns[0]->url();
+}
+
+void DolphinColumnView::showColumn(const KUrl& url)
+{
+    if (!rootUrl().isParentOf(url)) {
+        setRootUrl(url);
+        return;
+    }
+
+    int columnIndex = 0;
+    foreach (DolphinColumnWidget* column, m_columns) {
+        if (column->url() == url) {
+            // the column represents already the requested URL, hence activate it
+            requestActivation(column);
+            layoutColumns();
+            return;
+        } else if (!column->url().isParentOf(url)) {
+            // the column is no parent of the requested URL, hence
+            // just delete all remaining columns
+            if (columnIndex > 0) {
+                QList<DolphinColumnWidget*>::iterator start = m_columns.begin() + columnIndex;
+                QList<DolphinColumnWidget*>::iterator end = m_columns.end();
+                for (QList<DolphinColumnWidget*>::iterator it = start; it != end; ++it) {
+                    deleteColumn(*it);
+                }
+                m_columns.erase(start, end);
+
+                const int maxIndex = m_columns.count() - 1;
+                Q_ASSERT(maxIndex >= 0);
+                if (m_index > maxIndex) {
+                    m_index = maxIndex;
+                }
+                break;
+            }
+        }
+        ++columnIndex;
+    }
+
+    // Create missing columns. Assuming that the path is "/home/peter/Temp/" and
+    // the target path is "/home/peter/Temp/a/b/c/", then the columns "a", "b" and
+    // "c" will be created.
+    const int lastIndex = m_columns.count() - 1;
+    Q_ASSERT(lastIndex >= 0);
+
+    const KUrl& activeUrl = m_columns[lastIndex]->url();
+    Q_ASSERT(activeUrl.isParentOf(url));
+    Q_ASSERT(activeUrl != url);
+
+    QString path = activeUrl.url(KUrl::AddTrailingSlash);
+    const QString targetPath = url.url(KUrl::AddTrailingSlash);
+
+    columnIndex = lastIndex;
+    int slashIndex = path.count('/');
+    bool hasSubPath = (slashIndex >= 0);
+    while (hasSubPath) {
+        const QString subPath = targetPath.section('/', slashIndex, slashIndex);
+        if (subPath.isEmpty()) {
+            hasSubPath = false;
+        } else {
+            path += subPath + '/';
+            ++slashIndex;
+
+            const KUrl childUrl = KUrl(path);
+            m_columns[columnIndex]->setChildUrl(childUrl);
+            columnIndex++;
+
+            DolphinColumnWidget* column = new DolphinColumnWidget(viewport(), this, childUrl);
+            const QString filter = nameFilter();
+            if (!filter.isEmpty()) {
+                column->setNameFilter(filter);
+            }
+            column->setActive(false);
+
+            m_columns.append(column);
+
+            // Before invoking layoutColumns() the column must be set visible temporary.
+            // To prevent a flickering the initial geometry is set to a hidden position.
+            column->setGeometry(QRect(-1, -1, 1, 1));
+            column->show();
+            layoutColumns();
+            updateScrollBar();
+        }
+    }
+
+    // set the last column as active column without modifying the controller
+    // and hence the history
+    activeColumn()->setActive(false);
+    m_index = columnIndex;
+    activeColumn()->setActive(true);
+    assureVisibleActiveColumn();
+}
+
+void DolphinColumnView::editItem(const KFileItem& item)
+{
+    activeColumn()->editItem(item);
+}
+
+KFileItemList DolphinColumnView::selectedItems() const
+{
+    return activeColumn()->selectedItems();
+}
+
+QMimeData* DolphinColumnView::selectionMimeData() const
+{
+    return activeColumn()->selectionMimeData();
+}
+
+void DolphinColumnView::selectAll()
+{
+    activeColumn()->selectAll();
+}
+
+bool DolphinColumnView::isIndexHidden(const QModelIndex& index) const
+{
+    Q_UNUSED(index);
+    return false;//activeColumn()->isIndexHidden(index);
+}
+
+QModelIndex DolphinColumnView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
+{
+    // Parts of this code have been taken from QColumnView::moveCursor().
+    // Copyright (C) 1992-2007 Trolltech ASA.
+
+    Q_UNUSED(modifiers);
+    if (model() == 0) {
+        return QModelIndex();
+    }
+
+    const QModelIndex current = currentIndex();
+    if (isRightToLeft()) {
+        if (cursorAction == MoveLeft) {
+            cursorAction = MoveRight;
+        } else if (cursorAction == MoveRight) {
+            cursorAction = MoveLeft;
+        }
+    }
+
+    switch (cursorAction) {
+    case MoveLeft:
+        if (m_index > 0) {
+            setActiveColumnIndex(m_index - 1);
+            m_controller->triggerUrlChangeRequest(activeColumn()->url());
+        }
+        break;
+
+    case MoveRight:
+        if (m_index < m_columns.count() - 1) {
+            setActiveColumnIndex(m_index + 1);
+            m_controller->triggerUrlChangeRequest(m_columns[m_index]->url());
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    return QModelIndex();
+}
+
+void DolphinColumnView::setSelection(const QRect& rect, QItemSelectionModel::SelectionFlags flags)
+{
+    Q_UNUSED(rect);
+    Q_UNUSED(flags);
+}
+
+QRegion DolphinColumnView::visualRegionForSelection(const QItemSelection& selection) const
+{
+    Q_UNUSED(selection);
+    return QRegion();
+}
+
+int DolphinColumnView::horizontalOffset() const
+{
+    return -m_contentX;
+}
+
+int DolphinColumnView::verticalOffset() const
+{
+    return 0;
+}
+
+void DolphinColumnView::mousePressEvent(QMouseEvent* event)
+{
+    m_controller->requestActivation();
+    QAbstractItemView::mousePressEvent(event);
+}
+
+void DolphinColumnView::resizeEvent(QResizeEvent* event)
 {
-    return m_viewOptions;
+    QAbstractItemView::resizeEvent(event);
+    layoutColumns();
+    updateScrollBar();
+    assureVisibleActiveColumn();
 }
 
-void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
+void DolphinColumnView::wheelEvent(QWheelEvent* event)
 {
-    QColumnView::contextMenuEvent(event);
-    m_controller->triggerContextMenuRequest(event->pos());
+    // let Ctrl+wheel events propagate to the DolphinView for icon zooming
+    if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
+        event->ignore();
+	return;
+    }
+    QAbstractItemView::wheelEvent(event);
+}
+
+void DolphinColumnView::setZoomLevel(int level)
+{
+    const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+
+    const bool showPreview = m_controller->dolphinView()->showPreview();
+    if (showPreview) {
+        settings->setPreviewSize(size);
+    } else {
+        settings->setIconSize(size);
+    }
+
+    updateDecorationSize(showPreview);
 }
 
-void DolphinColumnView::mouseReleaseEvent(QMouseEvent* event)
+void DolphinColumnView::moveContentHorizontally(int x)
 {
-    QColumnView::mouseReleaseEvent(event);
-    m_controller->triggerActivation();
+    m_contentX = isRightToLeft() ? +x : -x;
+    layoutColumns();
 }
 
-void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
+void DolphinColumnView::updateDecorationSize(bool showPreview)
 {
-    if (event->mimeData()->hasUrls()) {
-        event->acceptProposedAction();
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
+    const QSize size(iconSize, iconSize);
+    setIconSize(size);
+
+    foreach (QObject* object, viewport()->children()) {
+        if (object->inherits("QListView")) {
+            DolphinColumnWidget* widget = static_cast<DolphinColumnWidget*>(object);
+            widget->setDecorationSize(size);
+        }
     }
+
+    doItemsLayout();
 }
 
-void DolphinColumnView::dropEvent(QDropEvent* event)
+void DolphinColumnView::updateColumnsBackground(bool active)
 {
-    const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
-    if (!urls.isEmpty()) {
-        m_controller->indicateDroppedUrls(urls,
-                                          indexAt(event->pos()),
-                                          event->source());
-        event->acceptProposedAction();
+    if (active == m_active) {
+        return;
+    }
+
+    m_active = active;
+
+    // dim the background of the viewport
+    const QPalette::ColorRole role = viewport()->backgroundRole();
+    QColor background = viewport()->palette().color(role);
+    background.setAlpha(0);  // make background transparent
+
+    QPalette palette = viewport()->palette();
+    palette.setColor(role, background);
+    viewport()->setPalette(palette);
+
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->updateBackground();
     }
-    QColumnView::dropEvent(event);
 }
 
-void DolphinColumnView::zoomIn()
+void DolphinColumnView::slotSortingChanged(DolphinView::Sorting sorting)
 {
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->setSorting(sorting);
+    }
 }
 
-void DolphinColumnView::zoomOut()
+void DolphinColumnView::slotSortOrderChanged(Qt::SortOrder order)
 {
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->setSortOrder(order);
+    }
 }
 
-bool DolphinColumnView::isZoomInPossible() const
+void DolphinColumnView::slotShowHiddenFilesChanged()
 {
-    return false;
+    const bool show = m_controller->dolphinView()->showHiddenFiles();
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->setShowHiddenFiles(show);
+    }
 }
 
-bool DolphinColumnView::isZoomOutPossible() const
+void DolphinColumnView::slotShowPreviewChanged()
 {
-    return false;
+    const bool show = m_controller->dolphinView()->showPreview();
+    updateDecorationSize(show);
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->setShowPreview(show);
+    }
+}
+
+void DolphinColumnView::setActiveColumnIndex(int index)
+{
+    if (m_index == index) {
+        return;
+    }
+
+    const bool hasActiveColumn = (m_index >= 0);
+    if (hasActiveColumn) {
+        m_columns[m_index]->setActive(false);
+    }
+
+    m_index = index;
+    m_columns[m_index]->setActive(true);
+
+    assureVisibleActiveColumn();
+}
+
+void DolphinColumnView::layoutColumns()
+{
+    const int gap = 4;
+
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int columnWidth = settings->columnWidth();
+
+    QRect emptyViewportRect;
+    if (isRightToLeft()) {
+        int x = viewport()->width() - columnWidth + m_contentX;
+        foreach (DolphinColumnWidget* column, m_columns) {
+            column->setGeometry(QRect(x, 0, columnWidth - gap, viewport()->height()));
+            x -= columnWidth;
+        }
+        emptyViewportRect = QRect(0, 0, x + columnWidth - gap, viewport()->height());
+    } else {
+        int x = m_contentX;
+        foreach (DolphinColumnWidget* column, m_columns) {
+            column->setGeometry(QRect(x, 0, columnWidth - gap, viewport()->height()));
+            x += columnWidth;
+        }
+        emptyViewportRect = QRect(x, 0, viewport()->width() - x - gap, viewport()->height());
+    }
+
+    if (emptyViewportRect.isValid()) {
+        m_emptyViewport->show();
+        m_emptyViewport->setGeometry(emptyViewportRect);
+    } else {
+        m_emptyViewport->hide();
+    }
+}
+
+void DolphinColumnView::updateScrollBar()
+{
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int contentWidth = m_columns.count() * settings->columnWidth();
+
+    horizontalScrollBar()->setPageStep(contentWidth);
+    horizontalScrollBar()->setRange(0, contentWidth - viewport()->width());
+}
+
+void DolphinColumnView::assureVisibleActiveColumn()
+{
+    const int viewportWidth = viewport()->width();
+    const int x = activeColumn()->x();
+
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int width = settings->columnWidth();
+
+    if (x + width > viewportWidth) {
+        const int newContentX = m_contentX - x - width + viewportWidth;
+        if (isRightToLeft()) {
+            m_animation->setFrameRange(m_contentX, newContentX);
+        } else {
+            m_animation->setFrameRange(-m_contentX, -newContentX);
+        }
+        if (m_animation->state() != QTimeLine::Running) {
+           m_animation->start();
+        }
+    } else if (x < 0) {
+        const int newContentX = m_contentX - x;
+        if (isRightToLeft()) {
+            m_animation->setFrameRange(m_contentX, newContentX);
+        } else {
+            m_animation->setFrameRange(-m_contentX, -newContentX);
+        }
+        if (m_animation->state() != QTimeLine::Running) {
+           m_animation->start();
+        }
+    }
+}
+
+void DolphinColumnView::requestActivation(DolphinColumnWidget* column)
+{
+    m_controller->setItemView(column);
+    if (column->isActive()) {
+        assureVisibleActiveColumn();
+    } else {
+        int index = 0;
+        foreach (DolphinColumnWidget* currColumn, m_columns) {
+            if (currColumn == column) {
+                setActiveColumnIndex(index);
+                return;
+            }
+            ++index;
+        }
+    }
+}
+
+void DolphinColumnView::removeAllColumns()
+{
+    QList<DolphinColumnWidget*>::iterator start = m_columns.begin() + 1;
+    QList<DolphinColumnWidget*>::iterator end = m_columns.end();
+    for (QList<DolphinColumnWidget*>::iterator it = start; it != end; ++it) {
+        deleteColumn(*it);
+    }
+    m_columns.erase(start, end);
+    m_index = 0;
+    m_columns[0]->setActive(true);
+    assureVisibleActiveColumn();
+}
+
+QPoint DolphinColumnView::columnPosition(DolphinColumnWidget* column, const QPoint& point) const
+{
+    const QPoint topLeft = column->frameGeometry().topLeft();
+    return QPoint(point.x() - topLeft.x(), point.y() - topLeft.y());
+}
+
+void DolphinColumnView::deleteColumn(DolphinColumnWidget* column)
+{
+    if (column != 0) {
+        if (m_controller->itemView() == column) {
+            m_controller->setItemView(0);
+        }
+        // deleteWhenNotDragSource(column) does not necessarily delete column,
+        // and we want its preview generator destroyed immediately.
+        column->m_previewGenerator->deleteLater();
+        column->m_previewGenerator = 0;
+        column->hide();
+        // Prevent automatic destruction of column when this DolphinColumnView 
+        // is destroyed.
+        column->setParent(0); 
+        column->disconnect();
+        emit requestColumnDeletion(column);
+    }
 }
 
 #include "dolphincolumnview.moc"