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 "selectionmanager.h"
  34 #include "tooltips/tooltipmanager.h"
  35 #include "versioncontrolobserver.h"
  36 #include "viewextensionsfactory.h"
  37 #include "zoomlevelinfo.h"
  38
  39 #include <kcolorscheme.h>
  40 #include <kdirlister.h>
  41 #include <kfileitem.h>
  42 #include <kio/previewjob.h>
  43 #include <kiconeffect.h>
  44 #include <kjob.h>
  45 #include <konqmimedata.h>
  46
  47 #include <QApplication>
  48 #include <QClipboard>
  49 #include <QPainter>
  50 #include <QPoint>
  51 #include <QScrollBar>
  52
  53 DolphinColumnView::DolphinColumnView(QWidget* parent,
  54                                      DolphinColumnViewContainer* container,
  55                                      const KUrl& url) :
  56     QListView(parent),
  57     m_active(false),
  58     m_container(container),
  59     m_selectionManager(0),
  60     m_autoScroller(0),
  61     m_extensionsFactory(0),
  62     m_url(url),
  63     m_childUrl(),
  64     m_font(),
  65     m_decorationSize(),
  66     m_dirLister(0),
  67     m_dolphinModel(0),
  68     m_proxyModel(0),
  69     m_dropRect()
  70 {
  71     setMouseTracking(true);
  72     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  73     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  74     setSelectionBehavior(SelectItems);
  75     setSelectionMode(QAbstractItemView::ExtendedSelection);
  76     setDragDropMode(QAbstractItemView::DragDrop);
  77     setDropIndicatorShown(false);
  78     setSelectionRectVisible(true);
  79     setEditTriggers(QAbstractItemView::NoEditTriggers);
  80
  81     setVerticalScrollMode(QListView::ScrollPerPixel);
  82     setHorizontalScrollMode(QListView::ScrollPerPixel);
  83
  84     m_autoScroller = new DolphinViewAutoScroller(this);
  85
  86     // apply the column mode settings to the widget
  87     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  88     Q_ASSERT(settings != 0);
  89
  90     if (settings->useSystemFont()) {
  91         m_font = KGlobalSettings::generalFont();
  92     } else {
  93         m_font = QFont(settings->fontFamily(),
  94                        settings->fontSize(),
  95                        settings->fontWeight(),
  96                        settings->italicFont());
  97     }
  98
  99    // KFileItemDelegate* delegate = new KFileItemDelegate(this);
 100    // delegate->setShowToolTipWhenElided(false);
 101    // setItemDelegate(delegate);
 102
 103     activate();
 104
 105     connect(this, SIGNAL(viewportEntered()),
 106             m_container->m_controller, SLOT(emitViewportEntered()));
 107     connect(this, SIGNAL(entered(const QModelIndex&)),
 108             this, SLOT(slotEntered(const QModelIndex&)));
 109
 110     const DolphinView* dolphinView = m_container->m_controller->dolphinView();
 111     connect(dolphinView, SIGNAL(sortingChanged(DolphinView::Sorting)),
 112             this, SLOT(slotSortingChanged(DolphinView::Sorting)));
 113     connect(dolphinView, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 114             this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
 115     connect(dolphinView, SIGNAL(sortFoldersFirstChanged(bool)),
 116             this, SLOT(slotSortFoldersFirstChanged(bool)));
 117     connect(dolphinView, SIGNAL(showHiddenFilesChanged()),
 118             this, SLOT(slotShowHiddenFilesChanged()));
 119     connect(dolphinView, SIGNAL(showPreviewChanged()),
 120             this, SLOT(slotShowPreviewChanged()));
 121
 122     m_dirLister = new DolphinDirLister();
 123     m_dirLister->setAutoUpdate(true);
 124     m_dirLister->setMainWindow(window());
 125     m_dirLister->setDelayedMimeTypes(true);
 126     const bool showHiddenFiles = m_container->m_controller->dolphinView()->showHiddenFiles();
 127     m_dirLister->setShowingDotFiles(showHiddenFiles);
 128
 129     m_dolphinModel = new DolphinModel(this);
 130     m_dolphinModel->setDirLister(m_dirLister);
 131     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 132
 133     m_proxyModel = new DolphinSortFilterProxyModel(this);
 134     m_proxyModel->setSourceModel(m_dolphinModel);
 135     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 136
 137     m_proxyModel->setSorting(dolphinView->sorting());
 138     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 139     m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 140
 141     setModel(m_proxyModel);
 142
 143     if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 144         m_selectionManager = new SelectionManager(this);
 145         connect(m_selectionManager, SIGNAL(selectionChanged()),
 146                 this, SLOT(requestActivation()));
 147         connect(m_container->m_controller, SIGNAL(urlChanged(const KUrl&)),
 148                 m_selectionManager, SLOT(reset()));
 149     }
 150
 151     //m_dirLister->openUrl(url, KDirLister::NoFlags);
 152
 153     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 154             this, SLOT(updateFont()));
 155
 156     /*FolderExpander* folderExpander = new FolderExpander(this, m_proxyModel);
 157     folderExpander->setEnabled(DolphinSettings::instance().generalSettings()->autoExpandFolders());
 158     connect (folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 159              m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 160
 161     new VersionControlObserver(this);*/
 162
 163     DolphinController* controller = m_container->m_controller;
 164     connect(controller, SIGNAL(zoomLevelChanged(int)),
 165             this, SLOT(setZoomLevel(int)));
 166
 167     const QString nameFilter = controller->nameFilter();
 168     if (!nameFilter.isEmpty()) {
 169         m_proxyModel->setFilterRegExp(nameFilter);
 170     }
 171     connect(controller, SIGNAL(nameFilterChanged(const QString&)),
 172             this, SLOT(setNameFilter(const QString&)));
 173
 174     updateDecorationSize(dolphinView->showPreview());
 175
 176     m_extensionsFactory = new ViewExtensionsFactory(this, controller);
 177 }
 178
 179 DolphinColumnView::~DolphinColumnView()
 180 {
 181     delete m_proxyModel;
 182     m_proxyModel = 0;
 183     delete m_dolphinModel;
 184     m_dolphinModel = 0;
 185     m_dirLister = 0; // deleted by m_dolphinModel
 186 }
 187
 188 void DolphinColumnView::setActive(bool active)
 189 {
 190     if (active && (m_container->focusProxy() != this)) {
 191         m_container->setFocusProxy(this);
 192     }
 193
 194     if (m_active != active) {
 195         m_active = active;
 196
 197         if (active) {
 198             activate();
 199         } else {
 200             deactivate();
 201         }
 202     }
 203 }
 204
 205 /*void DolphinColumnView::setSorting(DolphinView::Sorting sorting)
 206 {
 207     m_proxyModel->setSorting(sorting);
 208 }
 209
 210 void DolphinColumnView::setSortOrder(Qt::SortOrder order)
 211 {
 212     m_proxyModel->setSortOrder(order);
 213 }
 214
 215 void DolphinColumnView::setSortFoldersFirst(bool foldersFirst)
 216 {
 217     m_proxyModel->setSortFoldersFirst(foldersFirst);
 218 }
 219
 220 void DolphinColumnView::setShowHiddenFiles(bool show)
 221 {
 222     if (show != m_dirLister->showingDotFiles()) {
 223         m_dirLister->setShowingDotFiles(show);
 224         m_dirLister->stop();
 225         m_dirLister->openUrl(m_url, KDirLister::Reload);
 226     }
 227 }
 228
 229 void DolphinColumnView::setShowPreview(bool show)
 230 {
 231     m_previewGenerator->setPreviewShown(show);
 232
 233     m_dirLister->stop();
 234     m_dirLister->openUrl(m_url, KDirLister::Reload);
 235 }*/
 236
 237 void DolphinColumnView::updateBackground()
 238 {
 239     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 240     // cleaning up the cut-indication of DolphinColumnView with the code from
 241     // DolphinView a common helper-class should be available which can be shared
 242     // by all view implementations -> no hardcoded value anymore
 243     const QPalette::ColorRole role = viewport()->backgroundRole();
 244     QColor color = viewport()->palette().color(role);
 245     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 246
 247     QPalette palette = viewport()->palette();
 248     palette.setColor(role, color);
 249     viewport()->setPalette(palette);
 250
 251     update();
 252 }
 253
 254 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 255 {
 256     KFileItem item;
 257     const QModelIndex index = indexAt(pos);
 258     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 259         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 260         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 261     }
 262     return item;
 263 }
 264
 265 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 266 {
 267     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 268     viewOptions.font = m_font;
 269     viewOptions.decorationSize = m_decorationSize;
 270     viewOptions.showDecorationSelected = true;
 271     return viewOptions;
 272 }
 273
 274 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 275 {
 276     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_controller);
 277 }
 278
 279 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 280 {
 281     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 282         event->acceptProposedAction();
 283         requestActivation();
 284     }
 285 }
 286
 287 void DolphinColumnView::dragLeaveEvent(QDragLeaveEvent* event)
 288 {
 289     QListView::dragLeaveEvent(event);
 290     setDirtyRegion(m_dropRect);
 291 }
 292
 293 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 294 {
 295     QListView::dragMoveEvent(event);
 296
 297     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 298     const QModelIndex index = indexAt(event->pos());
 299     setDirtyRegion(m_dropRect);
 300
 301     m_dropRect.setSize(QSize()); // set as invalid
 302     if (index.isValid()) {
 303         m_container->m_controller->setItemView(this);
 304         const KFileItem item = m_container->m_controller->itemForIndex(index);
 305         if (!item.isNull() && item.isDir()) {
 306             m_dropRect = visualRect(index);
 307         }
 308     }
 309     setDirtyRegion(m_dropRect);
 310
 311     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 312         // accept url drops, independently from the destination item
 313         event->acceptProposedAction();
 314     }
 315 }
 316
 317 void DolphinColumnView::dropEvent(QDropEvent* event)
 318 {
 319     const QModelIndex index = indexAt(event->pos());
 320     m_container->m_controller->setItemView(this);
 321     const KFileItem item = m_container->m_controller->itemForIndex(index);
 322     m_container->m_controller->indicateDroppedUrls(item, url(), event);
 323     QListView::dropEvent(event);
 324 }
 325
 326 void DolphinColumnView::paintEvent(QPaintEvent* event)
 327 {
 328     if (!m_childUrl.isEmpty()) {
 329         // indicate the shown URL of the next column by highlighting the shown folder item
 330         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 331         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 332         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 333             const QRect itemRect = visualRect(proxyIndex);
 334             QPainter painter(viewport());
 335             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 336             color.setAlpha(32);
 337             painter.setPen(Qt::NoPen);
 338             painter.setBrush(color);
 339             painter.drawRect(itemRect);
 340         }
 341     }
 342
 343     QListView::paintEvent(event);
 344 }
 345
 346 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 347 {
 348     requestActivation();
 349     if (!indexAt(event->pos()).isValid()) {
 350         if (QApplication::mouseButtons() & Qt::MidButton) {
 351             m_container->m_controller->replaceUrlByClipboard();
 352         }
 353     } else if (event->button() == Qt::LeftButton) {
 354         // TODO: see comment in DolphinIconsView::mousePressEvent()
 355         setState(QAbstractItemView::DraggingState);
 356     }
 357     QListView::mousePressEvent(event);
 358 }
 359
 360 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 361 {
 362     QListView::keyPressEvent(event);
 363     requestActivation();
 364
 365     DolphinController* controller = m_container->m_controller;
 366     controller->handleKeyPressEvent(event);
 367     switch (event->key()) {
 368     case Qt::Key_Right: {
 369         // Special key handling for the column: A Key_Right should
 370         // open a new column for the currently selected folder.
 371         const QModelIndex index = currentIndex();
 372         const KFileItem item = controller->itemForIndex(index);
 373         if (!item.isNull() && item.isDir()) {
 374             controller->emitItemTriggered(item);
 375         }
 376         break;
 377     }
 378
 379     case Qt::Key_Escape:
 380         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(),
 381                                           QItemSelectionModel::Current |
 382                                           QItemSelectionModel::Clear);
 383         break;
 384
 385     default:
 386         break;
 387     }
 388 }
 389
 390 void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
 391 {
 392     if (!m_active) {
 393         m_container->requestActivation(this);
 394         Q_ASSERT(m_container->m_controller->itemView() == this);
 395         m_container->m_controller->triggerUrlChangeRequest(m_url);
 396     }
 397     Q_ASSERT(m_active);
 398
 399     QListView::contextMenuEvent(event);
 400
 401     const QModelIndex index = indexAt(event->pos());
 402     if (!index.isValid()) {
 403         clearSelection();
 404     }
 405
 406     const QPoint pos = m_container->viewport()->mapFromGlobal(event->globalPos());
 407     Q_ASSERT(m_container->m_controller->itemView() == this);
 408     m_container->m_controller->triggerContextMenuRequest(pos);
 409 }
 410
 411 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 412 {
 413     if (m_selectionManager != 0) {
 414         m_selectionManager->reset();
 415     }
 416
 417     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 418     if (event->modifiers() & Qt::ControlModifier) {
 419         event->ignore();
 420         return;
 421     }
 422
 423     const int height = m_decorationSize.height();
 424     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 425     verticalScrollBar()->setSingleStep(step);
 426
 427     QListView::wheelEvent(event);
 428 }
 429
 430 void DolphinColumnView::leaveEvent(QEvent* event)
 431 {
 432     QListView::leaveEvent(event);
 433     // if the mouse is above an item and moved very fast outside the widget,
 434     // no viewportEntered() signal might be emitted although the mouse has been moved
 435     // above the viewport
 436     m_container->m_controller->emitViewportEntered();
 437 }
 438
 439 void DolphinColumnView::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 440 {
 441     QListView::selectionChanged(selected, deselected);
 442
 443     //QItemSelectionModel* selModel = m_container->selectionModel();
 444     //selModel->select(selected, QItemSelectionModel::Select);
 445     //selModel->select(deselected, QItemSelectionModel::Deselect);
 446 }
 447
 448 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 449 {
 450     QListView::currentChanged(current, previous);
 451     m_autoScroller->handleCurrentIndexChange(current, previous);
 452 }
 453
 454 void DolphinColumnView::setNameFilter(const QString& nameFilter)
 455 {
 456     m_proxyModel->setFilterRegExp(nameFilter);
 457 }
 458
 459 void DolphinColumnView::setZoomLevel(int level)
 460 {
 461     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 462     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 463
 464     const bool showPreview = m_container->m_controller->dolphinView()->showPreview();
 465     if (showPreview) {
 466         settings->setPreviewSize(size);
 467     } else {
 468         settings->setIconSize(size);
 469     }
 470
 471     updateDecorationSize(showPreview);
 472 }
 473
 474 void DolphinColumnView::slotEntered(const QModelIndex& index)
 475 {
 476     m_container->m_controller->setItemView(this);
 477     m_container->m_controller->emitItemEntered(index);
 478 }
 479
 480 void DolphinColumnView::requestActivation()
 481 {
 482     m_container->m_controller->setItemView(this);
 483     m_container->m_controller->requestActivation();
 484     if (!m_active) {
 485         m_container->requestActivation(this);
 486         m_container->m_controller->triggerUrlChangeRequest(m_url);
 487         selectionModel()->clear();
 488     }
 489 }
 490
 491 void DolphinColumnView::updateFont()
 492 {
 493     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 494     Q_ASSERT(settings != 0);
 495
 496     if (settings->useSystemFont()) {
 497         m_font = KGlobalSettings::generalFont();
 498     }
 499 }
 500
 501 void DolphinColumnView::slotShowPreviewChanged()
 502 {
 503     const DolphinView* view = m_container->m_controller->dolphinView();
 504     updateDecorationSize(view->showPreview());
 505 }
 506
 507 void DolphinColumnView::activate()
 508 {
 509     setFocus(Qt::OtherFocusReason);
 510
 511     if (KGlobalSettings::singleClick()) {
 512         connect(this, SIGNAL(clicked(const QModelIndex&)),
 513                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 514     } else {
 515         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 516                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 517     }
 518
 519     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 520         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 521     }
 522
 523     updateBackground();
 524 }
 525
 526 void DolphinColumnView::deactivate()
 527 {
 528     clearFocus();
 529     if (KGlobalSettings::singleClick()) {
 530         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 531                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 532     } else {
 533         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 534                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 535     }
 536
 537     const QModelIndex current = selectionModel()->currentIndex();
 538     selectionModel()->clear();
 539     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 540     updateBackground();
 541 }
 542
 543 void DolphinColumnView::updateDecorationSize(bool showPreview)
 544 {
 545     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 546     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 547     const QSize size(iconSize, iconSize);
 548     setIconSize(size);
 549
 550     m_decorationSize = size;
 551
 552     if (m_selectionManager != 0) {
 553         m_selectionManager->reset();
 554     }
 555
 556     doItemsLayout();
 557 }
 558
 559 #include "dolphincolumnview.moc"