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 "dolphincontroller.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 "versioncontrolobserver.h"
  35 #include "viewextensionsfactory.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                        settings->fontSize(),
  90                        settings->fontWeight(),
  91                        settings->italicFont());
  92     }
  93
  94     activate();
  95
  96     connect(this, SIGNAL(viewportEntered()),
  97             m_container->m_controller, SLOT(emitViewportEntered()));
  98     connect(this, SIGNAL(entered(const QModelIndex&)),
  99             this, SLOT(slotEntered(const QModelIndex&)));
 100
 101     const DolphinView* dolphinView = m_container->m_controller->dolphinView();
 102     connect(dolphinView, SIGNAL(sortingChanged(DolphinView::Sorting)),
 103             this, SLOT(slotSortingChanged(DolphinView::Sorting)));
 104     connect(dolphinView, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 105             this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
 106     connect(dolphinView, SIGNAL(sortFoldersFirstChanged(bool)),
 107             this, SLOT(slotSortFoldersFirstChanged(bool)));
 108     connect(dolphinView, SIGNAL(showHiddenFilesChanged()),
 109             this, SLOT(slotShowHiddenFilesChanged()));
 110     connect(dolphinView, SIGNAL(showPreviewChanged()),
 111             this, SLOT(slotShowPreviewChanged()));
 112
 113     m_dirLister = new DolphinDirLister();
 114     m_dirLister->setAutoUpdate(true);
 115     m_dirLister->setMainWindow(window());
 116     m_dirLister->setDelayedMimeTypes(true);
 117     const bool showHiddenFiles = m_container->m_controller->dolphinView()->showHiddenFiles();
 118     m_dirLister->setShowingDotFiles(showHiddenFiles);
 119
 120     m_dolphinModel = new DolphinModel(this);
 121     m_dolphinModel->setDirLister(m_dirLister);
 122     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 123
 124     m_proxyModel = new DolphinSortFilterProxyModel(this);
 125     m_proxyModel->setSourceModel(m_dolphinModel);
 126     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 127
 128     m_proxyModel->setSorting(dolphinView->sorting());
 129     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 130     m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 131
 132     setModel(m_proxyModel);
 133
 134     //m_dirLister->openUrl(url, KDirLister::NoFlags);
 135
 136     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 137             this, SLOT(updateFont()));
 138
 139     /*FolderExpander* folderExpander = new FolderExpander(this, m_proxyModel);
 140     folderExpander->setEnabled(DolphinSettings::instance().generalSettings()->autoExpandFolders());
 141     connect (folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 142              m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 143
 144     new VersionControlObserver(this);*/
 145
 146     DolphinController* controller = m_container->m_controller;
 147     connect(controller, SIGNAL(zoomLevelChanged(int)),
 148             this, SLOT(setZoomLevel(int)));
 149
 150     const QString nameFilter = controller->nameFilter();
 151     if (!nameFilter.isEmpty()) {
 152         m_proxyModel->setFilterRegExp(nameFilter);
 153     }
 154     connect(controller, SIGNAL(nameFilterChanged(const QString&)),
 155             this, SLOT(setNameFilter(const QString&)));
 156
 157     updateDecorationSize(dolphinView->showPreview());
 158
 159     m_extensionsFactory = new ViewExtensionsFactory(this, controller);
 160 }
 161
 162 DolphinColumnView::~DolphinColumnView()
 163 {
 164     delete m_proxyModel;
 165     m_proxyModel = 0;
 166     delete m_dolphinModel;
 167     m_dolphinModel = 0;
 168     m_dirLister = 0; // deleted by m_dolphinModel
 169 }
 170
 171 void DolphinColumnView::setActive(bool active)
 172 {
 173     if (active && (m_container->focusProxy() != this)) {
 174         m_container->setFocusProxy(this);
 175     }
 176
 177     if (m_active != active) {
 178         m_active = active;
 179
 180         if (active) {
 181             activate();
 182         } else {
 183             deactivate();
 184         }
 185     }
 186 }
 187
 188 /*void DolphinColumnView::setSorting(DolphinView::Sorting sorting)
 189 {
 190     m_proxyModel->setSorting(sorting);
 191 }
 192
 193 void DolphinColumnView::setSortOrder(Qt::SortOrder order)
 194 {
 195     m_proxyModel->setSortOrder(order);
 196 }
 197
 198 void DolphinColumnView::setSortFoldersFirst(bool foldersFirst)
 199 {
 200     m_proxyModel->setSortFoldersFirst(foldersFirst);
 201 }
 202
 203 void DolphinColumnView::setShowHiddenFiles(bool show)
 204 {
 205     if (show != m_dirLister->showingDotFiles()) {
 206         m_dirLister->setShowingDotFiles(show);
 207         m_dirLister->stop();
 208         m_dirLister->openUrl(m_url, KDirLister::Reload);
 209     }
 210 }
 211
 212 void DolphinColumnView::setShowPreview(bool show)
 213 {
 214     m_previewGenerator->setPreviewShown(show);
 215
 216     m_dirLister->stop();
 217     m_dirLister->openUrl(m_url, KDirLister::Reload);
 218 }*/
 219
 220 void DolphinColumnView::updateBackground()
 221 {
 222     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 223     // cleaning up the cut-indication of DolphinColumnView with the code from
 224     // DolphinView a common helper-class should be available which can be shared
 225     // by all view implementations -> no hardcoded value anymore
 226     const QPalette::ColorRole role = viewport()->backgroundRole();
 227     QColor color = viewport()->palette().color(role);
 228     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 229
 230     QPalette palette = viewport()->palette();
 231     palette.setColor(role, color);
 232     viewport()->setPalette(palette);
 233
 234     update();
 235 }
 236
 237 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 238 {
 239     KFileItem item;
 240     const QModelIndex index = indexAt(pos);
 241     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 242         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 243         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 244     }
 245     return item;
 246 }
 247
 248 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 249 {
 250     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 251     viewOptions.font = m_font;
 252     viewOptions.decorationSize = m_decorationSize;
 253     viewOptions.showDecorationSelected = true;
 254     return viewOptions;
 255 }
 256
 257 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 258 {
 259     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_controller);
 260 }
 261
 262 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 263 {
 264     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 265         event->acceptProposedAction();
 266         requestActivation();
 267     }
 268 }
 269
 270 void DolphinColumnView::dragLeaveEvent(QDragLeaveEvent* event)
 271 {
 272     QListView::dragLeaveEvent(event);
 273     setDirtyRegion(m_dropRect);
 274 }
 275
 276 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 277 {
 278     QListView::dragMoveEvent(event);
 279
 280     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 281     const QModelIndex index = indexAt(event->pos());
 282     setDirtyRegion(m_dropRect);
 283
 284     m_dropRect.setSize(QSize()); // set as invalid
 285     if (index.isValid()) {
 286         m_container->m_controller->setItemView(this);
 287         const KFileItem item = m_container->m_controller->itemForIndex(index);
 288         if (!item.isNull() && item.isDir()) {
 289             m_dropRect = visualRect(index);
 290         }
 291     }
 292     setDirtyRegion(m_dropRect);
 293
 294     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 295         // accept url drops, independently from the destination item
 296         event->acceptProposedAction();
 297     }
 298 }
 299
 300 void DolphinColumnView::dropEvent(QDropEvent* event)
 301 {
 302     const QModelIndex index = indexAt(event->pos());
 303     m_container->m_controller->setItemView(this);
 304     const KFileItem item = m_container->m_controller->itemForIndex(index);
 305     m_container->m_controller->indicateDroppedUrls(item, url(), event);
 306     QListView::dropEvent(event);
 307 }
 308
 309 void DolphinColumnView::paintEvent(QPaintEvent* event)
 310 {
 311     if (!m_childUrl.isEmpty()) {
 312         // indicate the shown URL of the next column by highlighting the shown folder item
 313         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 314         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 315         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 316             const QRect itemRect = visualRect(proxyIndex);
 317             QPainter painter(viewport());
 318             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 319             color.setAlpha(32);
 320             painter.setPen(Qt::NoPen);
 321             painter.setBrush(color);
 322             painter.drawRect(itemRect);
 323         }
 324     }
 325
 326     QListView::paintEvent(event);
 327 }
 328
 329 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 330 {
 331     requestActivation();
 332     if (!indexAt(event->pos()).isValid()) {
 333         if (QApplication::mouseButtons() & Qt::MidButton) {
 334             m_container->m_controller->replaceUrlByClipboard();
 335         }
 336     } else if (event->button() == Qt::LeftButton) {
 337         // TODO: see comment in DolphinIconsView::mousePressEvent()
 338         setState(QAbstractItemView::DraggingState);
 339     }
 340     QListView::mousePressEvent(event);
 341 }
 342
 343 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 344 {
 345     QListView::keyPressEvent(event);
 346     requestActivation();
 347
 348     DolphinController* controller = m_container->m_controller;
 349     controller->handleKeyPressEvent(event);
 350     switch (event->key()) {
 351     case Qt::Key_Right: {
 352         // Special key handling for the column: A Key_Right should
 353         // open a new column for the currently selected folder.
 354         const QModelIndex index = currentIndex();
 355         const KFileItem item = controller->itemForIndex(index);
 356         if (!item.isNull() && item.isDir()) {
 357             controller->emitItemTriggered(item);
 358         }
 359         break;
 360     }
 361
 362     case Qt::Key_Escape:
 363         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(),
 364                                           QItemSelectionModel::Current |
 365                                           QItemSelectionModel::Clear);
 366         break;
 367
 368     default:
 369         break;
 370     }
 371 }
 372
 373 void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
 374 {
 375     if (!m_active) {
 376         m_container->requestActivation(this);
 377         Q_ASSERT(m_container->m_controller->itemView() == this);
 378         m_container->m_controller->triggerUrlChangeRequest(m_url);
 379     }
 380     Q_ASSERT(m_active);
 381
 382     QListView::contextMenuEvent(event);
 383
 384     const QModelIndex index = indexAt(event->pos());
 385     if (!index.isValid()) {
 386         clearSelection();
 387     }
 388
 389     const QPoint pos = m_container->viewport()->mapFromGlobal(event->globalPos());
 390     Q_ASSERT(m_container->m_controller->itemView() == this);
 391     m_container->m_controller->triggerContextMenuRequest(pos);
 392 }
 393
 394 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 395 {
 396     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 397     if (event->modifiers() & Qt::ControlModifier) {
 398         event->ignore();
 399         return;
 400     }
 401
 402     const int height = m_decorationSize.height();
 403     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 404     verticalScrollBar()->setSingleStep(step);
 405
 406     QListView::wheelEvent(event);
 407 }
 408
 409 void DolphinColumnView::leaveEvent(QEvent* event)
 410 {
 411     QListView::leaveEvent(event);
 412     // if the mouse is above an item and moved very fast outside the widget,
 413     // no viewportEntered() signal might be emitted although the mouse has been moved
 414     // above the viewport
 415     m_container->m_controller->emitViewportEntered();
 416 }
 417
 418 void DolphinColumnView::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 419 {
 420     QListView::selectionChanged(selected, deselected);
 421
 422     //QItemSelectionModel* selModel = m_container->selectionModel();
 423     //selModel->select(selected, QItemSelectionModel::Select);
 424     //selModel->select(deselected, QItemSelectionModel::Deselect);
 425 }
 426
 427 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 428 {
 429     QListView::currentChanged(current, previous);
 430     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 431 }
 432
 433 void DolphinColumnView::setNameFilter(const QString& nameFilter)
 434 {
 435     m_proxyModel->setFilterRegExp(nameFilter);
 436 }
 437
 438 void DolphinColumnView::setZoomLevel(int level)
 439 {
 440     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 441     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 442
 443     const bool showPreview = m_container->m_controller->dolphinView()->showPreview();
 444     if (showPreview) {
 445         settings->setPreviewSize(size);
 446     } else {
 447         settings->setIconSize(size);
 448     }
 449
 450     updateDecorationSize(showPreview);
 451 }
 452
 453 void DolphinColumnView::slotEntered(const QModelIndex& index)
 454 {
 455     m_container->m_controller->setItemView(this);
 456     m_container->m_controller->emitItemEntered(index);
 457 }
 458
 459 void DolphinColumnView::requestActivation()
 460 {
 461     m_container->m_controller->setItemView(this);
 462     m_container->m_controller->requestActivation();
 463     if (!m_active) {
 464         m_container->requestActivation(this);
 465         m_container->m_controller->triggerUrlChangeRequest(m_url);
 466         selectionModel()->clear();
 467     }
 468 }
 469
 470 void DolphinColumnView::updateFont()
 471 {
 472     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 473     Q_ASSERT(settings != 0);
 474
 475     if (settings->useSystemFont()) {
 476         m_font = KGlobalSettings::generalFont();
 477     }
 478 }
 479
 480 void DolphinColumnView::slotShowPreviewChanged()
 481 {
 482     const DolphinView* view = m_container->m_controller->dolphinView();
 483     updateDecorationSize(view->showPreview());
 484 }
 485
 486 void DolphinColumnView::activate()
 487 {
 488     setFocus(Qt::OtherFocusReason);
 489
 490     if (KGlobalSettings::singleClick()) {
 491         connect(this, SIGNAL(clicked(const QModelIndex&)),
 492                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 493     } else {
 494         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 495                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 496     }
 497
 498     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 499         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 500     }
 501
 502     updateBackground();
 503 }
 504
 505 void DolphinColumnView::deactivate()
 506 {
 507     clearFocus();
 508     if (KGlobalSettings::singleClick()) {
 509         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 510                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 511     } else {
 512         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 513                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 514     }
 515
 516     const QModelIndex current = selectionModel()->currentIndex();
 517     selectionModel()->clear();
 518     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 519     updateBackground();
 520 }
 521
 522 void DolphinColumnView::updateDecorationSize(bool showPreview)
 523 {
 524     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 525     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 526     const QSize size(iconSize, iconSize);
 527     setIconSize(size);
 528
 529     m_decorationSize = size;
 530
 531     doItemsLayout();
 532 }
 533
 534 #include "dolphincolumnview.moc"