src/dolphincolumnview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 by Peter Penz <peter.penz@gmx.at>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "dolphincolumnview.h"
  21
  22 #include "dolphinmodel.h"
  23 #include "dolphincolumnviewcontainer.h"
  24 #include "dolphinviewcontroller.h"
  25 #include "dolphindirlister.h"
  26 #include "dolphinsortfilterproxymodel.h"
  27 #include "settings/dolphinsettings.h"
  28 #include "dolphinviewautoscroller.h"
  29 #include "dolphin_columnmodesettings.h"
  30 #include "dolphin_generalsettings.h"
  31 #include "draganddrophelper.h"
  32 #include "folderexpander.h"
  33 #include "tooltips/tooltipmanager.h"
  34 #include "viewextensionsfactory.h"
  35 #include "viewmodecontroller.h"
  36 #include "zoomlevelinfo.h"
  37
  38 #include <kcolorscheme.h>
  39 #include <kdirlister.h>
  40 #include <kfileitem.h>
  41 #include <kio/previewjob.h>
  42 #include <kiconeffect.h>
  43 #include <kjob.h>
  44 #include <konqmimedata.h>
  45
  46 #include <QApplication>
  47 #include <QClipboard>
  48 #include <QPainter>
  49 #include <QPoint>
  50 #include <QScrollBar>
  51
  52 DolphinColumnView::DolphinColumnView(QWidget* parent,
  53                                      DolphinColumnViewContainer* container,
  54                                      const KUrl& url) :
  55     QListView(parent),
  56     m_active(false),
  57     m_container(container),
  58     m_extensionsFactory(0),
  59     m_url(url),
  60     m_childUrl(),
  61     m_font(),
  62     m_decorationSize(),
  63     m_dirLister(0),
  64     m_dolphinModel(0),
  65     m_proxyModel(0),
  66     m_dropRect()
  67 {
  68     setMouseTracking(true);
  69     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  70     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  71     setSelectionBehavior(SelectItems);
  72     setSelectionMode(QAbstractItemView::ExtendedSelection);
  73     setDragDropMode(QAbstractItemView::DragDrop);
  74     setDropIndicatorShown(false);
  75     setSelectionRectVisible(true);
  76     setEditTriggers(QAbstractItemView::NoEditTriggers);
  77
  78     setVerticalScrollMode(QListView::ScrollPerPixel);
  79     setHorizontalScrollMode(QListView::ScrollPerPixel);
  80
  81     // apply the column mode settings to the widget
  82     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  83     Q_ASSERT(settings != 0);
  84
  85     if (settings->useSystemFont()) {
  86         m_font = KGlobalSettings::generalFont();
  87     } else {
  88         m_font = QFont(settings->fontFamily(),
  89                        qRound(settings->fontSize()),
  90                        settings->fontWeight(),
  91                        settings->italicFont());
  92         m_font.setPointSizeF(settings->fontSize());
  93     }
  94
  95     connect(this, SIGNAL(viewportEntered()),
  96             m_container->m_dolphinViewController, SLOT(emitViewportEntered()));
  97     connect(this, SIGNAL(entered(const QModelIndex&)),
  98             this, SLOT(slotEntered(const QModelIndex&)));
  99
 100     const DolphinView* dolphinView = m_container->m_dolphinViewController->view();
 101     connect(dolphinView, SIGNAL(showPreviewChanged()),
 102             this, SLOT(slotShowPreviewChanged()));
 103
 104     m_dirLister = new DolphinDirLister();
 105     m_dirLister->setAutoUpdate(true);
 106     m_dirLister->setMainWindow(window());
 107     m_dirLister->setDelayedMimeTypes(true);
 108     const bool showHiddenFiles = m_container->m_dolphinViewController->view()->showHiddenFiles();
 109     m_dirLister->setShowingDotFiles(showHiddenFiles);
 110
 111     m_dolphinModel = new DolphinModel(this);
 112     m_dolphinModel->setDirLister(m_dirLister);
 113     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 114
 115     m_proxyModel = new DolphinSortFilterProxyModel(this);
 116     m_proxyModel->setSourceModel(m_dolphinModel);
 117     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 118
 119     m_proxyModel->setSorting(dolphinView->sorting());
 120     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 121     m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 122
 123     setModel(m_proxyModel);
 124
 125     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 126             this, SLOT(updateFont()));
 127
 128     DolphinViewController* dolphinViewController = m_container->m_dolphinViewController;
 129     connect(dolphinViewController, SIGNAL(zoomLevelChanged(int)),
 130             this, SLOT(setZoomLevel(int)));
 131
 132     const ViewModeController* viewModeController = m_container->m_viewModeController;
 133     const QString nameFilter = viewModeController->nameFilter();
 134     if (!nameFilter.isEmpty()) {
 135         m_proxyModel->setFilterFixedString(nameFilter);
 136     }
 137
 138     updateDecorationSize(dolphinView->showPreview());
 139     updateBackground();
 140     m_extensionsFactory = new ViewExtensionsFactory(this, dolphinViewController, viewModeController);
 141
 142     m_dirLister->openUrl(url, KDirLister::NoFlags);
 143 }
 144
 145 DolphinColumnView::~DolphinColumnView()
 146 {
 147     delete m_proxyModel;
 148     m_proxyModel = 0;
 149     delete m_dolphinModel;
 150     m_dolphinModel = 0;
 151     m_dirLister = 0; // deleted by m_dolphinModel
 152 }
 153
 154 void DolphinColumnView::setActive(bool active)
 155 {
 156     if (active && (m_container->focusProxy() != this)) {
 157         m_container->setFocusProxy(this);
 158     }
 159
 160     if (m_active != active) {
 161         m_active = active;
 162
 163         if (active) {
 164             activate();
 165         } else {
 166             deactivate();
 167         }
 168     }
 169 }
 170
 171 void DolphinColumnView::updateBackground()
 172 {
 173     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 174     // cleaning up the cut-indication of DolphinColumnView with the code from
 175     // DolphinView a common helper-class should be available which can be shared
 176     // by all view implementations -> no hardcoded value anymore
 177     const QPalette::ColorRole role = viewport()->backgroundRole();
 178     QColor color = viewport()->palette().color(role);
 179     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 180
 181     QPalette palette = viewport()->palette();
 182     palette.setColor(role, color);
 183     viewport()->setPalette(palette);
 184
 185     update();
 186 }
 187
 188 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 189 {
 190     KFileItem item;
 191     const QModelIndex index = indexAt(pos);
 192     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 193         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 194         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 195     }
 196     return item;
 197 }
 198
 199 void DolphinColumnView::setSelectionModel(QItemSelectionModel* model)
 200 {
 201     // If a change of the selection is done although the view is not active
 202     // (e. g. by the selection markers), the column must be activated. This
 203     // is done by listening to the current selectionChanged() signal.
 204     if (selectionModel() != 0) {
 205         disconnect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 206                    this, SLOT(requestActivation()));
 207     }
 208
 209     QListView::setSelectionModel(model);
 210
 211     connect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 212             this, SLOT(requestActivation()));
 213 }
 214
 215 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 216 {
 217     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 218     viewOptions.font = m_font;
 219     viewOptions.fontMetrics = QFontMetrics(m_font);
 220     viewOptions.decorationSize = m_decorationSize;
 221     viewOptions.showDecorationSelected = true;
 222     return viewOptions;
 223 }
 224
 225 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 226 {
 227     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_dolphinViewController);
 228 }
 229
 230 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 231 {
 232     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 233         event->acceptProposedAction();
 234         requestActivation();
 235     }
 236 }
 237
 238 void DolphinColumnView::dragLeaveEvent(QDragLeaveEvent* event)
 239 {
 240     QListView::dragLeaveEvent(event);
 241     setDirtyRegion(m_dropRect);
 242 }
 243
 244 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 245 {
 246     QListView::dragMoveEvent(event);
 247
 248     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 249     const QModelIndex index = indexAt(event->pos());
 250     setDirtyRegion(m_dropRect);
 251
 252     m_dropRect.setSize(QSize()); // set as invalid
 253     if (index.isValid()) {
 254         m_container->m_dolphinViewController->setItemView(this);
 255         const KFileItem item = m_container->m_dolphinViewController->itemForIndex(index);
 256         if (!item.isNull() && item.isDir()) {
 257             m_dropRect = visualRect(index);
 258         }
 259     }
 260     setDirtyRegion(m_dropRect);
 261
 262     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 263         // accept url drops, independently from the destination item
 264         event->acceptProposedAction();
 265     }
 266 }
 267
 268 void DolphinColumnView::dropEvent(QDropEvent* event)
 269 {
 270     const QModelIndex index = indexAt(event->pos());
 271     m_container->m_dolphinViewController->setItemView(this);
 272     const KFileItem item = m_container->m_dolphinViewController->itemForIndex(index);
 273     m_container->m_dolphinViewController->indicateDroppedUrls(item, url(), event);
 274     QListView::dropEvent(event);
 275 }
 276
 277 void DolphinColumnView::paintEvent(QPaintEvent* event)
 278 {
 279     if (!m_childUrl.isEmpty()) {
 280         // indicate the shown URL of the next column by highlighting the shown folder item
 281         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 282         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 283         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 284             const QRect itemRect = visualRect(proxyIndex);
 285             QPainter painter(viewport());
 286             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 287             color.setAlpha(32);
 288             painter.setPen(Qt::NoPen);
 289             painter.setBrush(color);
 290             painter.drawRect(itemRect);
 291         }
 292     }
 293
 294     QListView::paintEvent(event);
 295 }
 296
 297 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 298 {
 299     requestActivation();
 300     if (!indexAt(event->pos()).isValid()) {
 301         if (QApplication::mouseButtons() & Qt::MidButton) {
 302             m_container->m_dolphinViewController->replaceUrlByClipboard();
 303         }
 304     } else if (event->button() == Qt::LeftButton) {
 305         // TODO: see comment in DolphinIconsView::mousePressEvent()
 306         setState(QAbstractItemView::DraggingState);
 307     }
 308     QListView::mousePressEvent(event);
 309 }
 310
 311 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 312 {
 313     QListView::keyPressEvent(event);
 314     requestActivation();
 315
 316     DolphinViewController* controller = m_container->m_dolphinViewController;
 317     controller->handleKeyPressEvent(event);
 318     switch (event->key()) {
 319     case Qt::Key_Right: {
 320         // Special key handling for the column: A Key_Right should
 321         // open a new column for the currently selected folder.
 322         const QModelIndex index = currentIndex();
 323         const KFileItem item = controller->itemForIndex(index);
 324         if (!item.isNull() && item.isDir()) {
 325             controller->emitItemTriggered(item);
 326         }
 327         break;
 328     }
 329
 330     case Qt::Key_Escape:
 331         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(),
 332                                           QItemSelectionModel::Current |
 333                                           QItemSelectionModel::Clear);
 334         break;
 335
 336     default:
 337         break;
 338     }
 339 }
 340
 341 void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
 342 {
 343     requestActivation();
 344     QListView::contextMenuEvent(event);
 345     m_container->m_dolphinViewController->triggerContextMenuRequest(event->pos());
 346 }
 347
 348 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 349 {
 350     const int step = m_decorationSize.height();
 351     verticalScrollBar()->setSingleStep(step);
 352     QListView::wheelEvent(event);
 353 }
 354
 355 void DolphinColumnView::leaveEvent(QEvent* event)
 356 {
 357     QListView::leaveEvent(event);
 358     // if the mouse is above an item and moved very fast outside the widget,
 359     // no viewportEntered() signal might be emitted although the mouse has been moved
 360     // above the viewport
 361     m_container->m_dolphinViewController->emitViewportEntered();
 362 }
 363
 364 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 365 {
 366     QListView::currentChanged(current, previous);
 367     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 368 }
 369
 370 void DolphinColumnView::setZoomLevel(int level)
 371 {
 372     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 373     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 374
 375     const bool showPreview = m_container->m_dolphinViewController->view()->showPreview();
 376     if (showPreview) {
 377         settings->setPreviewSize(size);
 378     } else {
 379         settings->setIconSize(size);
 380     }
 381
 382     updateDecorationSize(showPreview);
 383 }
 384
 385 void DolphinColumnView::slotEntered(const QModelIndex& index)
 386 {
 387     m_container->m_dolphinViewController->setItemView(this);
 388     m_container->m_dolphinViewController->emitItemEntered(index);
 389 }
 390
 391 void DolphinColumnView::requestActivation()
 392 {
 393     m_container->m_dolphinViewController->requestActivation();
 394     if (!m_active) {
 395         m_container->requestActivation(this);
 396         selectionModel()->clear();
 397     }
 398 }
 399
 400 void DolphinColumnView::updateFont()
 401 {
 402     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 403     Q_ASSERT(settings != 0);
 404
 405     if (settings->useSystemFont()) {
 406         m_font = KGlobalSettings::generalFont();
 407     }
 408 }
 409
 410 void DolphinColumnView::slotShowPreviewChanged()
 411 {
 412     const DolphinView* view = m_container->m_dolphinViewController->view();
 413     updateDecorationSize(view->showPreview());
 414 }
 415
 416 void DolphinColumnView::activate()
 417 {
 418     setFocus(Qt::OtherFocusReason);
 419
 420     if (KGlobalSettings::singleClick()) {
 421         connect(this, SIGNAL(clicked(const QModelIndex&)),
 422                 m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 423     } else {
 424         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 425                 m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 426     }
 427
 428     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 429         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 430     }
 431
 432     updateBackground();
 433 }
 434
 435 void DolphinColumnView::deactivate()
 436 {
 437     clearFocus();
 438     if (KGlobalSettings::singleClick()) {
 439         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 440                    m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 441     } else {
 442         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 443                    m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 444     }
 445
 446     const QModelIndex current = selectionModel()->currentIndex();
 447     selectionModel()->clear();
 448     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 449     updateBackground();
 450 }
 451
 452 void DolphinColumnView::updateDecorationSize(bool showPreview)
 453 {
 454     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 455     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 456     const QSize size(iconSize, iconSize);
 457     setIconSize(size);
 458
 459     m_decorationSize = size;
 460
 461     doItemsLayout();
 462 }
 463
 464 #include "dolphincolumnview.moc"