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/***************************************************************************
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* Copyright (C) 2006-2009 by Peter Penz <peter.penz@gmx.at> *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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***************************************************************************/
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#include "dolphiniconsview.h"
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#include "dolphincategorydrawer.h"
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#include "dolphinviewcontroller.h"
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#include "settings/dolphinsettings.h"
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#include "dolphinsortfilterproxymodel.h"
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#include "dolphin_iconsmodesettings.h"
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#include "dolphin_generalsettings.h"
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#include "draganddrophelper.h"
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#include "selectionmanager.h"
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#include "viewextensionsfactory.h"
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#include "viewmodecontroller.h"
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#include "zoomlevelinfo.h"
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#include <kcategorizedsortfilterproxymodel.h>
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#include <kfileitemdelegate.h>
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#include <QAbstractProxyModel>
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#include <QApplication>
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DolphinIconsView::DolphinIconsView(QWidget* parent,
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DolphinViewController* dolphinViewController,
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const ViewModeController* viewModeController,
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DolphinSortFilterProxyModel* proxyModel) :
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KCategorizedView(parent),
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m_dolphinViewController(dolphinViewController),
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m_viewModeController(viewModeController),
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m_categoryDrawer(new DolphinCategoryDrawer(this)),
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m_extensionsFactory(0),
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m_decorationPosition(QStyleOptionViewItem::Top),
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m_displayAlignment(Qt::AlignHCenter),
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Q_ASSERT(dolphinViewController != 0);
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Q_ASSERT(viewModeController != 0);
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setLayoutDirection(Qt::LeftToRight);
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setViewMode(QListView::IconMode);
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setResizeMode(QListView::Adjust);
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setMovement(QListView::Static);
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setEditTriggers(QAbstractItemView::NoEditTriggers);
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viewport()->setAcceptDrops(true);
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setMouseTracking(true);
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connect(this, SIGNAL(clicked(const QModelIndex&)),
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dolphinViewController, SLOT(requestTab(const QModelIndex&)));
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if (KGlobalSettings::singleClick()) {
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connect(this, SIGNAL(clicked(const QModelIndex&)),
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dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
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connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
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dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
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connect(this, SIGNAL(entered(const QModelIndex&)),
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dolphinViewController, SLOT(emitItemEntered(const QModelIndex&)));
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connect(this, SIGNAL(viewportEntered()),
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dolphinViewController, SLOT(emitViewportEntered()));
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connect(viewModeController, SIGNAL(zoomLevelChanged(int)),
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this, SLOT(setZoomLevel(int)));
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const DolphinView* view = dolphinViewController->view();
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connect(view, SIGNAL(showPreviewChanged()),
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this, SLOT(slotShowPreviewChanged()));
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connect(view, SIGNAL(additionalInfoChanged()),
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this, SLOT(slotAdditionalInfoChanged()));
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// apply the icons mode settings to the widget
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const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
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Q_ASSERT(settings != 0);
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if (settings->useSystemFont()) {
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m_font = KGlobalSettings::generalFont();
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m_font = QFont(settings->fontFamily(),
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qRound(settings->fontSize()),
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settings->fontWeight(),
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settings->italicFont());
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m_font.setPointSizeF(settings->fontSize());
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setWordWrap(settings->numberOfTextlines() > 1);
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if (settings->arrangement() == QListView::TopToBottom) {
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setFlow(QListView::LeftToRight);
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m_decorationPosition = QStyleOptionViewItem::Top;
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m_displayAlignment = Qt::AlignHCenter;
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setFlow(QListView::TopToBottom);
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m_decorationPosition = QStyleOptionViewItem::Left;
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m_displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
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connect(m_categoryDrawer, SIGNAL(actionRequested(int,QModelIndex)), this, SLOT(categoryDrawerActionRequested(int,QModelIndex)));
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setCategoryDrawer(m_categoryDrawer);
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connect(KGlobalSettings::self(), SIGNAL(settingsChanged(int)),
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this, SLOT(slotGlobalSettingsChanged(int)));
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updateGridSize(view->showPreview(), 0);
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m_extensionsFactory = new ViewExtensionsFactory(this, dolphinViewController, viewModeController);
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DolphinIconsView::~DolphinIconsView()
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void DolphinIconsView::dataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight)
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KCategorizedView::dataChanged(topLeft, bottomRight);
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KCategorizedSortFilterProxyModel* proxyModel = dynamic_cast<KCategorizedSortFilterProxyModel*>(model());
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if (!proxyModel->isCategorizedModel()) {
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// bypass a QListView issue that items are not layout correctly if the decoration size of
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scheduleDelayedItemsLayout();
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QStyleOptionViewItem DolphinIconsView::viewOptions() const
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QStyleOptionViewItem viewOptions = KCategorizedView::viewOptions();
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viewOptions.font = m_font;
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viewOptions.fontMetrics = QFontMetrics(m_font);
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viewOptions.decorationPosition = m_decorationPosition;
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viewOptions.decorationSize = m_decorationSize;
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viewOptions.displayAlignment = m_displayAlignment;
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viewOptions.showDecorationSelected = true;
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void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
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KCategorizedView::contextMenuEvent(event);
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m_dolphinViewController->triggerContextMenuRequest(event->pos());
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void DolphinIconsView::mousePressEvent(QMouseEvent* event)
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m_dolphinViewController->requestActivation();
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const QModelIndex index = indexAt(event->pos());
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if (index.isValid() && (event->button() == Qt::LeftButton)) {
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// TODO: It should not be necessary to manually set the dragging state, but I could
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// not reproduce this issue with a Qt-only example yet to find the root cause.
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// Issue description: start Dolphin, split the view and drag an item from the
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// inactive view to the active view by a very fast mouse movement. Result:
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// the item gets selected instead of being dragged...
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setState(QAbstractItemView::DraggingState);
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if (!index.isValid() && (QApplication::mouseButtons() & Qt::MidButton)) {
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m_dolphinViewController->replaceUrlByClipboard();
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KCategorizedView::mousePressEvent(event);
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void DolphinIconsView::startDrag(Qt::DropActions supportedActions)
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DragAndDropHelper::instance().startDrag(this, supportedActions, m_dolphinViewController);
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void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
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if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
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event->acceptProposedAction();
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void DolphinIconsView::dragLeaveEvent(QDragLeaveEvent* event)
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KCategorizedView::dragLeaveEvent(event);
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setDirtyRegion(m_dropRect);
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void DolphinIconsView::dragMoveEvent(QDragMoveEvent* event)
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KCategorizedView::dragMoveEvent(event);
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// TODO: remove this code when the issue #160611 is solved in Qt 4.4
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const QModelIndex index = indexAt(event->pos());
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setDirtyRegion(m_dropRect);
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m_dropRect.setSize(QSize()); // set as invalid
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if (index.isValid()) {
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const KFileItem item = m_dolphinViewController->itemForIndex(index);
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if (!item.isNull() && item.isDir()) {
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m_dropRect = visualRect(index);
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m_dropRect.setSize(QSize()); // set as invalid
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if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
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// accept url drops, independently from the destination item
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event->acceptProposedAction();
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setDirtyRegion(m_dropRect);
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void DolphinIconsView::dropEvent(QDropEvent* event)
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const QModelIndex index = indexAt(event->pos());
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const KFileItem item = m_dolphinViewController->itemForIndex(index);
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m_dolphinViewController->indicateDroppedUrls(item, m_viewModeController->url(), event);
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// don't call KCategorizedView::dropEvent(event), as it moves
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// the items which is not wanted
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QModelIndex DolphinIconsView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
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const QModelIndex oldCurrent = currentIndex();
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QModelIndex newCurrent = KCategorizedView::moveCursor(cursorAction, modifiers);
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if (newCurrent != oldCurrent) {
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// The cursor has not been moved by the base implementation. Provide a
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// wrap behavior, so that the cursor will go to the next item when reaching
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const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
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if (settings->arrangement() == QListView::LeftToRight) {
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switch (cursorAction) {
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if (newCurrent.row() == 0) {
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newCurrent = KCategorizedView::moveCursor(MoveLeft, modifiers);
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selectionModel()->setCurrentIndex(newCurrent, QItemSelectionModel::NoUpdate);
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newCurrent = KCategorizedView::moveCursor(MovePageDown, modifiers);
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if (newCurrent.row() == (model()->rowCount() - 1)) {
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newCurrent = KCategorizedView::moveCursor(MovePageUp, modifiers);
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selectionModel()->setCurrentIndex(newCurrent, QItemSelectionModel::NoUpdate);
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newCurrent = KCategorizedView::moveCursor(MoveRight, modifiers);
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QModelIndex current = oldCurrent;
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switch (cursorAction) {
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if (newCurrent.row() == 0) {
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newCurrent = KCategorizedView::moveCursor(MoveUp, modifiers);
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selectionModel()->setCurrentIndex(newCurrent, QItemSelectionModel::NoUpdate);
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current = newCurrent;
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newCurrent = KCategorizedView::moveCursor(MoveRight, modifiers);
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} while (newCurrent != current);
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if (newCurrent.row() == (model()->rowCount() - 1)) {
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selectionModel()->setCurrentIndex(newCurrent, QItemSelectionModel::NoUpdate);
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current = newCurrent;
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newCurrent = KCategorizedView::moveCursor(MoveLeft, modifiers);
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} while (newCurrent != current);
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newCurrent = KCategorizedView::moveCursor(MoveDown, modifiers);
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// Revert all changes of the current item to make sure that item selection works correctly
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selectionModel()->setCurrentIndex(oldCurrent, QItemSelectionModel::NoUpdate);
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void DolphinIconsView::keyPressEvent(QKeyEvent* event)
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KCategorizedView::keyPressEvent(event);
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m_dolphinViewController->handleKeyPressEvent(event);
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void DolphinIconsView::wheelEvent(QWheelEvent* event)
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horizontalScrollBar()->setSingleStep(m_itemSize.width() / 5);
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verticalScrollBar()->setSingleStep(m_itemSize.height() / 5);
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KCategorizedView::wheelEvent(event);
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// if the icons are aligned left to right, the vertical wheel event should
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// be applied to the horizontal scrollbar
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const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
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const bool scrollHorizontal = (event->orientation() == Qt::Vertical) &&
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(settings->arrangement() == QListView::LeftToRight);
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if (scrollHorizontal) {
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QWheelEvent horizEvent(event->pos(),
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QApplication::sendEvent(horizontalScrollBar(), &horizEvent);
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void DolphinIconsView::showEvent(QShowEvent* event)
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KFileItemDelegate* delegate = dynamic_cast<KFileItemDelegate*>(itemDelegate());
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delegate->setMaximumSize(m_itemSize);
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KCategorizedView::showEvent(event);
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void DolphinIconsView::leaveEvent(QEvent* event)
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KCategorizedView::leaveEvent(event);
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// if the mouse is above an item and moved very fast outside the widget,
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// no viewportEntered() signal might be emitted although the mouse has been moved
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// above the viewport
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m_dolphinViewController->emitViewportEntered();
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void DolphinIconsView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
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KCategorizedView::currentChanged(current, previous);
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m_extensionsFactory->handleCurrentIndexChange(current, previous);
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void DolphinIconsView::resizeEvent(QResizeEvent* event)
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KCategorizedView::resizeEvent(event);
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const DolphinView* view = m_dolphinViewController->view();
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updateGridSize(view->showPreview(), view->additionalInfo().count());
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void DolphinIconsView::slotShowPreviewChanged()
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const DolphinView* view = m_dolphinViewController->view();
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updateGridSize(view->showPreview(), additionalInfoCount());
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void DolphinIconsView::slotAdditionalInfoChanged()
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const DolphinView* view = m_dolphinViewController->view();
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const bool showPreview = view->showPreview();
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updateGridSize(showPreview, view->additionalInfo().count());
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void DolphinIconsView::setZoomLevel(int level)
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IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
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const int oldIconSize = settings->iconSize();
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int newIconSize = oldIconSize;
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const bool showPreview = m_dolphinViewController->view()->showPreview();
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const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
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settings->setPreviewSize(previewSize);
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newIconSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
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settings->setIconSize(newIconSize);
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// increase also the grid size
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const int diff = newIconSize - oldIconSize;
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settings->setItemWidth(settings->itemWidth() + diff);
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settings->setItemHeight(settings->itemHeight() + diff);
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updateGridSize(showPreview, additionalInfoCount());
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void DolphinIconsView::requestActivation()
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m_dolphinViewController->requestActivation();
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void DolphinIconsView::slotGlobalSettingsChanged(int category)
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const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
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Q_ASSERT(settings != 0);
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if (settings->useSystemFont()) {
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m_font = KGlobalSettings::generalFont();
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disconnect(this, SIGNAL(clicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
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disconnect(this, SIGNAL(doubleClicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
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if (KGlobalSettings::singleClick()) {
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connect(this, SIGNAL(clicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
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connect(this, SIGNAL(doubleClicked(QModelIndex)), m_dolphinViewController, SLOT(triggerItem(QModelIndex)));
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void DolphinIconsView::categoryDrawerActionRequested(int action, const QModelIndex &index)
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const QSortFilterProxyModel *model = dynamic_cast<const QSortFilterProxyModel*>(index.model());
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const QModelIndex topLeft = model->index(index.row(), modelColumn());
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QModelIndex bottomRight = topLeft;
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const QString category = model->data(index, KCategorizedSortFilterProxyModel::CategoryDisplayRole).toString();
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QModelIndex current = topLeft;
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current = model->index(current.row() + 1, modelColumn());
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const QString curCategory = model->data(model->index(current.row(), index.column()), KCategorizedSortFilterProxyModel::CategoryDisplayRole).toString();
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if (!current.isValid() || category != curCategory) {
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bottomRight = current;
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case DolphinCategoryDrawer::SelectAll:
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selectionModel()->select(QItemSelection(topLeft, bottomRight), QItemSelectionModel::Select);
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case DolphinCategoryDrawer::UnselectAll:
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selectionModel()->select(QItemSelection(topLeft, bottomRight), QItemSelectionModel::Deselect);
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void DolphinIconsView::updateGridSize(bool showPreview, int additionalInfoCount)
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const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
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Q_ASSERT(settings != 0);
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int itemWidth = settings->itemWidth();
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int itemHeight = settings->itemHeight();
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int size = settings->iconSize();
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const int previewSize = settings->previewSize();
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const int diff = previewSize - size;
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Q_ASSERT(additionalInfoCount >= 0);
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itemHeight += additionalInfoCount * QFontMetrics(m_font).height();
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// Optimize the item size of the grid in a way to prevent large gaps on the
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// right border (= row arrangement) or the bottom border (= column arrangement).
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// There is no public API in QListView to find out the used width of the viewport
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// for the layout. The following calculation of 'contentWidth'/'contentHeight'
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// is based on QListViewPrivate::prepareItemsLayout() (Copyright (C) 2009 Nokia Corporation).
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int frameAroundContents = 0;
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if (style()->styleHint(QStyle::SH_ScrollView_FrameOnlyAroundContents)) {
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frameAroundContents = style()->pixelMetric(QStyle::PM_DefaultFrameWidth) * 2;
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const int spacing = settings->gridSpacing();
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if (settings->arrangement() == QListView::TopToBottom) {
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const int contentWidth = viewport()->width() - 1
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- frameAroundContents
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- style()->pixelMetric(QStyle::PM_ScrollBarExtent, 0, horizontalScrollBar());
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const int gridWidth = itemWidth + spacing * 2;
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const int horizItemCount = contentWidth / gridWidth;
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if (horizItemCount > 0) {
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itemWidth += (contentWidth - horizItemCount * gridWidth) / horizItemCount;
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// The decoration width indirectly defines the maximum
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// width for the text wrapping. To use the maximum item width
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// for text wrapping, it is used as decoration width.
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m_decorationSize = QSize(itemWidth, size);
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setIconSize(QSize(itemWidth, size));
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const int contentHeight = viewport()->height() - 1
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- frameAroundContents
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- style()->pixelMetric(QStyle::PM_ScrollBarExtent, 0, verticalScrollBar());
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const int gridHeight = itemHeight + spacing;
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const int vertItemCount = contentHeight / gridHeight;
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if (vertItemCount > 0) {
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itemHeight += (contentHeight - vertItemCount * gridHeight) / vertItemCount;
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m_decorationSize = QSize(size, size);
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setIconSize(QSize(size, size));
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m_itemSize = QSize(itemWidth, itemHeight);
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setGridSizeOwn(QSize(itemWidth + spacing * 2, itemHeight + spacing));
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KFileItemDelegate* delegate = dynamic_cast<KFileItemDelegate*>(itemDelegate());
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delegate->setMaximumSize(m_itemSize);
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int DolphinIconsView::additionalInfoCount() const
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const DolphinView* view = m_dolphinViewController->view();
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return view->additionalInfo().count();
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#include "dolphiniconsview.moc"