src/dolphincolumnwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 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 "dolphincolumnwidget.h"
  21
  22 #include "dolphinmodel.h"
  23 #include "dolphincolumnview.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
  36 #include <kcolorscheme.h>
  37 #include <kdirlister.h>
  38 #include <kfileitem.h>
  39 #include <kfilepreviewgenerator.h>
  40 #include <kio/previewjob.h>
  41 #include <kiconeffect.h>
  42 #include <kjob.h>
  43 #include <konqmimedata.h>
  44
  45 #include <QApplication>
  46 #include <QClipboard>
  47 #include <QPainter>
  48 #include <QPoint>
  49 #include <QScrollBar>
  50
  51 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  52                                          DolphinColumnView* columnView,
  53                                          const KUrl& url) :
  54     QListView(parent),
  55     m_active(true),
  56     m_view(columnView),
  57     m_selectionManager(0),
  58     m_autoScroller(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_previewGenerator(0),
  67     m_toolTipManager(0),
  68     m_dropRect()
  69 {
  70     setMouseTracking(true);
  71     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  72     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  73     setSelectionBehavior(SelectItems);
  74     setSelectionMode(QAbstractItemView::ExtendedSelection);
  75     setDragDropMode(QAbstractItemView::DragDrop);
  76     setDropIndicatorShown(false);
  77     setSelectionRectVisible(true);
  78     setEditTriggers(QAbstractItemView::NoEditTriggers);
  79
  80     setVerticalScrollMode(QListView::ScrollPerPixel);
  81     setHorizontalScrollMode(QListView::ScrollPerPixel);
  82
  83     m_autoScroller = new DolphinViewAutoScroller(this);
  84
  85     // apply the column mode settings to the widget
  86     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  87     Q_ASSERT(settings != 0);
  88
  89     if (settings->useSystemFont()) {
  90         m_font = KGlobalSettings::generalFont();
  91     } else {
  92         m_font = QFont(settings->fontFamily(),
  93                        settings->fontSize(),
  94                        settings->fontWeight(),
  95                        settings->italicFont());
  96     }
  97
  98     const int iconSize = settings->iconSize();
  99     setDecorationSize(QSize(iconSize, iconSize));
 100
 101     KFileItemDelegate* delegate = new KFileItemDelegate(this);
 102     delegate->setShowToolTipWhenElided(false);
 103     setItemDelegate(delegate);
 104
 105     activate();
 106
 107     connect(this, SIGNAL(viewportEntered()),
 108             m_view->m_controller, SLOT(emitViewportEntered()));
 109     connect(this, SIGNAL(entered(const QModelIndex&)),
 110             this, SLOT(slotEntered(const QModelIndex&)));
 111
 112     m_dirLister = new DolphinDirLister();
 113     m_dirLister->setAutoUpdate(true);
 114     m_dirLister->setMainWindow(window());
 115     m_dirLister->setDelayedMimeTypes(true);
 116     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 117     m_dirLister->setShowingDotFiles(showHiddenFiles);
 118
 119     m_dolphinModel = new DolphinModel(this);
 120     m_dolphinModel->setDirLister(m_dirLister);
 121     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 122
 123     m_proxyModel = new DolphinSortFilterProxyModel(this);
 124     m_proxyModel->setSourceModel(m_dolphinModel);
 125     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 126     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 127     m_proxyModel->setSorting(dolphinView->sorting());
 128     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 129
 130     setModel(m_proxyModel);
 131
 132     if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 133         m_selectionManager = new SelectionManager(this);
 134         connect(m_selectionManager, SIGNAL(selectionChanged()),
 135                 this, SLOT(requestActivation()));
 136         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 137                 m_selectionManager, SLOT(reset()));
 138     }
 139
 140     m_previewGenerator = new KFilePreviewGenerator(this);
 141     m_previewGenerator->setPreviewShown(m_view->m_controller->dolphinView()->showPreview());
 142
 143     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 144         m_toolTipManager = new ToolTipManager(this, m_proxyModel);
 145     }
 146
 147     m_dirLister->openUrl(url, KDirLister::NoFlags);
 148
 149     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 150             this, SLOT(updateFont()));
 151
 152     FolderExpander* folderExpander = new FolderExpander(this, m_proxyModel);
 153     folderExpander->setEnabled(DolphinSettings::instance().generalSettings()->autoExpandFolders());
 154     connect (folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 155              m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 156 }
 157
 158 DolphinColumnWidget::~DolphinColumnWidget()
 159 {
 160     delete m_proxyModel;
 161     m_proxyModel = 0;
 162     delete m_dolphinModel;
 163     m_dolphinModel = 0;
 164     m_dirLister = 0; // deleted by m_dolphinModel
 165 }
 166
 167 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 168 {
 169     setIconSize(size);
 170     m_decorationSize = size;
 171     doItemsLayout();
 172     if (m_previewGenerator != 0) {
 173         m_previewGenerator->updatePreviews();
 174     }
 175     if (m_selectionManager != 0) {
 176         m_selectionManager->reset();
 177     }
 178 }
 179
 180 void DolphinColumnWidget::setActive(bool active)
 181 {
 182     if (active && (m_view->focusProxy() != this)) {
 183         m_view->setFocusProxy(this);
 184     }
 185
 186     if (m_active != active) {
 187         m_active = active;
 188
 189         if (active) {
 190             activate();
 191         } else {
 192             deactivate();
 193         }
 194     }
 195 }
 196
 197 void DolphinColumnWidget::reload()
 198 {
 199     m_dirLister->stop();
 200     m_dirLister->openUrl(m_url, KDirLister::Reload);
 201 }
 202
 203 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 204 {
 205     m_proxyModel->setSorting(sorting);
 206 }
 207
 208 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 209 {
 210     m_proxyModel->setSortOrder(order);
 211 }
 212
 213 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 214 {
 215     if (show != m_dirLister->showingDotFiles()) {
 216         m_dirLister->setShowingDotFiles(show);
 217         m_dirLister->stop();
 218         m_dirLister->openUrl(m_url, KDirLister::Reload);
 219     }
 220 }
 221
 222 void DolphinColumnWidget::setShowPreview(bool show)
 223 {
 224     m_previewGenerator->setPreviewShown(show);
 225
 226     m_dirLister->stop();
 227     m_dirLister->openUrl(m_url, KDirLister::Reload);
 228 }
 229
 230 void DolphinColumnWidget::updateBackground()
 231 {
 232     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 233     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 234     // DolphinView a common helper-class should be available which can be shared
 235     // by all view implementations -> no hardcoded value anymore
 236     const QPalette::ColorRole role = viewport()->backgroundRole();
 237     QColor color = viewport()->palette().color(role);
 238     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 239
 240     QPalette palette = viewport()->palette();
 241     palette.setColor(role, color);
 242     viewport()->setPalette(palette);
 243
 244     update();
 245 }
 246
 247 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 248 {
 249     m_proxyModel->setFilterRegExp(nameFilter);
 250 }
 251
 252 void DolphinColumnWidget::editItem(const KFileItem& item)
 253 {
 254     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 255     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 256     if (proxyIndex.isValid()) {
 257         edit(proxyIndex);
 258     }
 259 }
 260
 261 KFileItem DolphinColumnWidget::itemAt(const QPoint& pos) const
 262 {
 263     KFileItem item;
 264     const QModelIndex index = indexAt(pos);
 265     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 266         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 267         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 268     }
 269     return item;
 270 }
 271
 272 KFileItemList DolphinColumnWidget::selectedItems() const
 273 {
 274     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 275     KFileItemList itemList;
 276
 277     const QModelIndexList indexList = selection.indexes();
 278     foreach (const QModelIndex &index, indexList) {
 279         KFileItem item = m_dolphinModel->itemForIndex(index);
 280         if (!item.isNull()) {
 281             itemList.append(item);
 282         }
 283     }
 284
 285     return itemList;
 286 }
 287
 288 QMimeData* DolphinColumnWidget::selectionMimeData() const
 289 {
 290     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 291     return m_dolphinModel->mimeData(selection.indexes());
 292 }
 293
 294 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 295 {
 296     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 297     viewOptions.font = m_font;
 298     viewOptions.decorationSize = m_decorationSize;
 299     viewOptions.showDecorationSelected = true;
 300     return viewOptions;
 301 }
 302
 303 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 304 {
 305     DragAndDropHelper::instance().startDrag(this, supportedActions, m_view->m_controller);
 306 }
 307
 308 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 309 {
 310     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 311         event->acceptProposedAction();
 312         requestActivation();
 313     }
 314 }
 315
 316 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 317 {
 318     QListView::dragLeaveEvent(event);
 319     setDirtyRegion(m_dropRect);
 320 }
 321
 322 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 323 {
 324     QListView::dragMoveEvent(event);
 325
 326     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 327     const QModelIndex index = indexAt(event->pos());
 328     setDirtyRegion(m_dropRect);
 329
 330     m_dropRect.setSize(QSize()); // set as invalid
 331     if (index.isValid()) {
 332         m_view->m_controller->setItemView(this);
 333         const KFileItem item = m_view->m_controller->itemForIndex(index);
 334         if (!item.isNull() && item.isDir()) {
 335             m_dropRect = visualRect(index);
 336         }
 337     }
 338     setDirtyRegion(m_dropRect);
 339
 340     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 341         // accept url drops, independently from the destination item
 342         event->acceptProposedAction();
 343     }
 344 }
 345
 346 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 347 {
 348     const QModelIndex index = indexAt(event->pos());
 349     m_view->m_controller->setItemView(this);
 350     const KFileItem item = m_view->m_controller->itemForIndex(index);
 351     m_view->m_controller->indicateDroppedUrls(item, url(), event);
 352     QListView::dropEvent(event);
 353 }
 354
 355 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 356 {
 357     if (!m_childUrl.isEmpty()) {
 358         // indicate the shown URL of the next column by highlighting the shown folder item
 359         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 360         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 361         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 362             const QRect itemRect = visualRect(proxyIndex);
 363             QPainter painter(viewport());
 364             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 365             color.setAlpha(32);
 366             painter.setPen(Qt::NoPen);
 367             painter.setBrush(color);
 368             painter.drawRect(itemRect);
 369         }
 370     }
 371
 372     QListView::paintEvent(event);
 373 }
 374
 375 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 376 {
 377     requestActivation();
 378     if (!indexAt(event->pos()).isValid()) {
 379         if (QApplication::mouseButtons() & Qt::MidButton) {
 380             m_view->m_controller->replaceUrlByClipboard();
 381         }
 382     } else if (event->button() == Qt::LeftButton) {
 383         // TODO: see comment in DolphinIconsView::mousePressEvent()
 384         setState(QAbstractItemView::DraggingState);
 385     }
 386     QListView::mousePressEvent(event);
 387 }
 388
 389 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 390 {
 391     QListView::keyPressEvent(event);
 392     requestActivation();
 393
 394     DolphinController* controller = m_view->m_controller;
 395     controller->handleKeyPressEvent(event);
 396     if (event->key() == Qt::Key_Right) {
 397         // Special key handling for the column: A Key_Right should
 398         // open a new column for the currently selected folder.
 399         const QModelIndex index = currentIndex();
 400         const KFileItem item = controller->itemForIndex(index);
 401         if (!item.isNull() && item.isDir()) {
 402             controller->emitItemTriggered(item);
 403         }
 404     }
 405
 406     if (m_toolTipManager != 0) {
 407         m_toolTipManager->hideTip();
 408     }
 409 }
 410
 411 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 412 {
 413     if (!m_active) {
 414         m_view->requestActivation(this);
 415         Q_ASSERT(m_view->m_controller->itemView() == this);
 416         m_view->m_controller->triggerUrlChangeRequest(m_url);
 417     }
 418     Q_ASSERT(m_active);
 419
 420     QListView::contextMenuEvent(event);
 421
 422     const QModelIndex index = indexAt(event->pos());
 423     if (!index.isValid()) {
 424         clearSelection();
 425     }
 426
 427     const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 428     Q_ASSERT(m_view->m_controller->itemView() == this);
 429     m_view->m_controller->triggerContextMenuRequest(pos);
 430 }
 431
 432 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 433 {
 434     if (m_selectionManager != 0) {
 435         m_selectionManager->reset();
 436     }
 437
 438     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 439     if (event->modifiers() & Qt::ControlModifier) {
 440         event->ignore();
 441         return;
 442     }
 443
 444     const int height = m_decorationSize.height();
 445     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 446     verticalScrollBar()->setSingleStep(step);
 447
 448     QListView::wheelEvent(event);
 449 }
 450
 451 void DolphinColumnWidget::leaveEvent(QEvent* event)
 452 {
 453     QListView::leaveEvent(event);
 454     // if the mouse is above an item and moved very fast outside the widget,
 455     // no viewportEntered() signal might be emitted although the mouse has been moved
 456     // above the viewport
 457     m_view->m_controller->emitViewportEntered();
 458 }
 459
 460 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 461 {
 462     QListView::selectionChanged(selected, deselected);
 463
 464     QItemSelectionModel* selModel = m_view->selectionModel();
 465     selModel->select(selected, QItemSelectionModel::Select);
 466     selModel->select(deselected, QItemSelectionModel::Deselect);
 467 }
 468
 469 void DolphinColumnWidget::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 470 {
 471     QListView::currentChanged(current, previous);
 472     if (current.isValid() && !m_autoScroller->isActive()) {
 473         scrollTo(current);
 474     }
 475 }
 476
 477 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 478 {
 479     m_view->m_controller->setItemView(this);
 480     m_view->m_controller->emitItemEntered(index);
 481 }
 482
 483 void DolphinColumnWidget::slotClicked(const QModelIndex& index)
 484 {
 485     DolphinController* controller = m_view->m_controller;
 486     if (KGlobalSettings::singleClick()) {
 487         controller->triggerItem(index);
 488     } else {
 489         // even when using double click, a directory should be opened
 490         // after the first click
 491         const KFileItem item = controller->itemForIndex(index);
 492         if (!item.isNull() && item.isDir()) {
 493             controller->triggerItem(index);
 494         }
 495     }
 496 }
 497
 498 void DolphinColumnWidget::slotDoubleClicked(const QModelIndex& index)
 499 {
 500     if (!KGlobalSettings::singleClick()) {
 501         m_view->m_controller->triggerItem(index);
 502     }
 503 }
 504
 505 void DolphinColumnWidget::requestActivation()
 506 {
 507     m_view->m_controller->setItemView(this);
 508     m_view->m_controller->requestActivation();
 509     if (!m_active) {
 510         m_view->requestActivation(this);
 511         m_view->m_controller->triggerUrlChangeRequest(m_url);
 512         selectionModel()->clear();
 513     }
 514 }
 515
 516 void DolphinColumnWidget::updateFont()
 517 {
 518     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 519     Q_ASSERT(settings != 0);
 520
 521     if (settings->useSystemFont()) {
 522         m_font = KGlobalSettings::generalFont();
 523     }
 524 }
 525
 526 void DolphinColumnWidget::activate()
 527 {
 528     setFocus(Qt::OtherFocusReason);
 529
 530     connect(this, SIGNAL(clicked(const QModelIndex&)),
 531             m_view->m_controller, SLOT(requestTab(const QModelIndex&)));
 532     connect(this, SIGNAL(clicked(const QModelIndex&)),
 533             this, SLOT(slotClicked(const QModelIndex&)));
 534     connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 535             this, SLOT(slotDoubleClicked(const QModelIndex&)));
 536
 537     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 538         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 539     }
 540
 541     updateBackground();
 542 }
 543
 544 void DolphinColumnWidget::deactivate()
 545 {
 546     clearFocus();
 547
 548     disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 549                this, SLOT(slotClicked(const QModelIndex&)));
 550     disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 551                this, SLOT(slotDoubleClicked(const QModelIndex&)));
 552
 553     const QModelIndex current = selectionModel()->currentIndex();
 554     selectionModel()->clear();
 555     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 556     updateBackground();
 557 }
 558
 559 #include "dolphincolumnwidget.moc"