apps/dolphin/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_dropRect()
  68 {
  69     setMouseTracking(true);
  70     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  71     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  72     setSelectionBehavior(SelectItems);
  73     setSelectionMode(QAbstractItemView::ExtendedSelection);
  74     setDragDropMode(QAbstractItemView::DragDrop);
  75     setDropIndicatorShown(false);
  76     setSelectionRectVisible(true);
  77     setEditTriggers(QAbstractItemView::NoEditTriggers);
  78
  79     setVerticalScrollMode(QListView::ScrollPerPixel);
  80     setHorizontalScrollMode(QListView::ScrollPerPixel);
  81
  82     m_autoScroller = new DolphinViewAutoScroller(this);
  83
  84     // apply the column mode settings to the widget
  85     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  86     Q_ASSERT(settings != 0);
  87
  88     if (settings->useSystemFont()) {
  89         m_font = KGlobalSettings::generalFont();
  90     } else {
  91         m_font = QFont(settings->fontFamily(),
  92                        settings->fontSize(),
  93                        settings->fontWeight(),
  94                        settings->italicFont());
  95     }
  96
  97     const int iconSize = settings->iconSize();
  98     setDecorationSize(QSize(iconSize, iconSize));
  99
 100     KFileItemDelegate* delegate = new KFileItemDelegate(this);
 101     delegate->setShowToolTipWhenElided(false);
 102     setItemDelegate(delegate);
 103
 104     activate();
 105
 106     connect(this, SIGNAL(viewportEntered()),
 107             m_view->m_controller, SLOT(emitViewportEntered()));
 108     connect(this, SIGNAL(entered(const QModelIndex&)),
 109             this, SLOT(slotEntered(const QModelIndex&)));
 110
 111     m_dirLister = new DolphinDirLister();
 112     m_dirLister->setAutoUpdate(true);
 113     m_dirLister->setMainWindow(window());
 114     m_dirLister->setDelayedMimeTypes(true);
 115     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 116     m_dirLister->setShowingDotFiles(showHiddenFiles);
 117
 118     m_dolphinModel = new DolphinModel(this);
 119     m_dolphinModel->setDirLister(m_dirLister);
 120     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 121
 122     m_proxyModel = new DolphinSortFilterProxyModel(this);
 123     m_proxyModel->setSourceModel(m_dolphinModel);
 124     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 125     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 126     m_proxyModel->setSorting(dolphinView->sorting());
 127     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 128
 129     setModel(m_proxyModel);
 130
 131     if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 132         m_selectionManager = new SelectionManager(this);
 133         connect(m_selectionManager, SIGNAL(selectionChanged()),
 134                 this, SLOT(requestActivation()));
 135         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 136                 m_selectionManager, SLOT(reset()));
 137     }
 138
 139     m_previewGenerator = new KFilePreviewGenerator(this);
 140     m_previewGenerator->setPreviewShown(m_view->m_controller->dolphinView()->showPreview());
 141
 142     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 143         new ToolTipManager(this, m_proxyModel);
 144     }
 145
 146     m_dirLister->openUrl(url, KDirLister::NoFlags);
 147
 148     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 149             this, SLOT(updateFont()));
 150
 151     FolderExpander* folderExpander = new FolderExpander(this, m_proxyModel);
 152     folderExpander->setEnabled(DolphinSettings::instance().generalSettings()->autoExpandFolders());
 153     connect (folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 154              m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 155 }
 156
 157 DolphinColumnWidget::~DolphinColumnWidget()
 158 {
 159     delete m_proxyModel;
 160     m_proxyModel = 0;
 161     delete m_dolphinModel;
 162     m_dolphinModel = 0;
 163     m_dirLister = 0; // deleted by m_dolphinModel
 164 }
 165
 166 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 167 {
 168     setIconSize(size);
 169     m_decorationSize = size;
 170     doItemsLayout();
 171     if (m_previewGenerator != 0) {
 172         m_previewGenerator->updatePreviews();
 173     }
 174     if (m_selectionManager != 0) {
 175         m_selectionManager->reset();
 176     }
 177 }
 178
 179 void DolphinColumnWidget::setActive(bool active)
 180 {
 181     if (active && (m_view->focusProxy() != this)) {
 182         m_view->setFocusProxy(this);
 183     }
 184
 185     if (m_active != active) {
 186         m_active = active;
 187
 188         if (active) {
 189             activate();
 190         } else {
 191             deactivate();
 192         }
 193     }
 194 }
 195
 196 void DolphinColumnWidget::reload()
 197 {
 198     m_dirLister->stop();
 199     m_dirLister->openUrl(m_url, KDirLister::Reload);
 200 }
 201
 202 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 203 {
 204     m_proxyModel->setSorting(sorting);
 205 }
 206
 207 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 208 {
 209     m_proxyModel->setSortOrder(order);
 210 }
 211
 212 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 213 {
 214     if (show != m_dirLister->showingDotFiles()) {
 215         m_dirLister->setShowingDotFiles(show);
 216         m_dirLister->stop();
 217         m_dirLister->openUrl(m_url, KDirLister::Reload);
 218     }
 219 }
 220
 221 void DolphinColumnWidget::setShowPreview(bool show)
 222 {
 223     m_previewGenerator->setPreviewShown(show);
 224
 225     m_dirLister->stop();
 226     m_dirLister->openUrl(m_url, KDirLister::Reload);
 227 }
 228
 229 void DolphinColumnWidget::updateBackground()
 230 {
 231     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 232     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 233     // DolphinView a common helper-class should be available which can be shared
 234     // by all view implementations -> no hardcoded value anymore
 235     const QPalette::ColorRole role = viewport()->backgroundRole();
 236     QColor color = viewport()->palette().color(role);
 237     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 238
 239     QPalette palette = viewport()->palette();
 240     palette.setColor(role, color);
 241     viewport()->setPalette(palette);
 242
 243     update();
 244 }
 245
 246 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 247 {
 248     m_proxyModel->setFilterRegExp(nameFilter);
 249 }
 250
 251 void DolphinColumnWidget::editItem(const KFileItem& item)
 252 {
 253     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 254     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 255     if (proxyIndex.isValid()) {
 256         edit(proxyIndex);
 257     }
 258 }
 259
 260 KFileItem DolphinColumnWidget::itemAt(const QPoint& pos) const
 261 {
 262     KFileItem item;
 263     const QModelIndex index = indexAt(pos);
 264     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 265         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 266         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 267     }
 268     return item;
 269 }
 270
 271 KFileItemList DolphinColumnWidget::selectedItems() const
 272 {
 273     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 274     KFileItemList itemList;
 275
 276     const QModelIndexList indexList = selection.indexes();
 277     foreach (const QModelIndex &index, indexList) {
 278         KFileItem item = m_dolphinModel->itemForIndex(index);
 279         if (!item.isNull()) {
 280             itemList.append(item);
 281         }
 282     }
 283
 284     return itemList;
 285 }
 286
 287 QMimeData* DolphinColumnWidget::selectionMimeData() const
 288 {
 289     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 290     return m_dolphinModel->mimeData(selection.indexes());
 291 }
 292
 293 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 294 {
 295     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 296     viewOptions.font = m_font;
 297     viewOptions.decorationSize = m_decorationSize;
 298     viewOptions.showDecorationSelected = true;
 299     return viewOptions;
 300 }
 301
 302 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 303 {
 304     DragAndDropHelper::instance().startDrag(this, supportedActions, m_view->m_controller);
 305 }
 306
 307 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 308 {
 309     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 310         event->acceptProposedAction();
 311         requestActivation();
 312     }
 313 }
 314
 315 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 316 {
 317     QListView::dragLeaveEvent(event);
 318     setDirtyRegion(m_dropRect);
 319 }
 320
 321 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 322 {
 323     QListView::dragMoveEvent(event);
 324
 325     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 326     const QModelIndex index = indexAt(event->pos());
 327     setDirtyRegion(m_dropRect);
 328
 329     m_dropRect.setSize(QSize()); // set as invalid
 330     if (index.isValid()) {
 331         m_view->m_controller->setItemView(this);
 332         const KFileItem item = m_view->m_controller->itemForIndex(index);
 333         if (!item.isNull() && item.isDir()) {
 334             m_dropRect = visualRect(index);
 335         }
 336     }
 337     setDirtyRegion(m_dropRect);
 338
 339     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 340         // accept url drops, independently from the destination item
 341         event->acceptProposedAction();
 342     }
 343 }
 344
 345 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 346 {
 347     const QModelIndex index = indexAt(event->pos());
 348     m_view->m_controller->setItemView(this);
 349     const KFileItem item = m_view->m_controller->itemForIndex(index);
 350     m_view->m_controller->indicateDroppedUrls(item, url(), event);
 351     QListView::dropEvent(event);
 352 }
 353
 354 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 355 {
 356     if (!m_childUrl.isEmpty()) {
 357         // indicate the shown URL of the next column by highlighting the shown folder item
 358         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 359         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 360         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 361             const QRect itemRect = visualRect(proxyIndex);
 362             QPainter painter(viewport());
 363             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 364             color.setAlpha(32);
 365             painter.setPen(Qt::NoPen);
 366             painter.setBrush(color);
 367             painter.drawRect(itemRect);
 368         }
 369     }
 370
 371     QListView::paintEvent(event);
 372 }
 373
 374 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 375 {
 376     requestActivation();
 377     if (!indexAt(event->pos()).isValid()) {
 378         if (QApplication::mouseButtons() & Qt::MidButton) {
 379             m_view->m_controller->replaceUrlByClipboard();
 380         }
 381     } else if (event->button() == Qt::LeftButton) {
 382         // TODO: see comment in DolphinIconsView::mousePressEvent()
 383         setState(QAbstractItemView::DraggingState);
 384     }
 385     QListView::mousePressEvent(event);
 386 }
 387
 388 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 389 {
 390     QListView::keyPressEvent(event);
 391     requestActivation();
 392     m_view->m_controller->handleKeyPressEvent(event);
 393 }
 394
 395 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 396 {
 397     if (!m_active) {
 398         m_view->requestActivation(this);
 399         Q_ASSERT(m_view->m_controller->itemView() == this);
 400         m_view->m_controller->triggerUrlChangeRequest(m_url);
 401     }
 402     Q_ASSERT(m_active);
 403
 404     QListView::contextMenuEvent(event);
 405
 406     const QModelIndex index = indexAt(event->pos());
 407     if (!index.isValid()) {
 408         clearSelection();
 409     }
 410
 411     const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 412     Q_ASSERT(m_view->m_controller->itemView() == this);
 413     m_view->m_controller->triggerContextMenuRequest(pos);
 414 }
 415
 416 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 417 {
 418     if (m_selectionManager != 0) {
 419         m_selectionManager->reset();
 420     }
 421
 422     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 423     if (event->modifiers() & Qt::ControlModifier) {
 424         event->ignore();
 425         return;
 426     }
 427
 428     const int height = m_decorationSize.height();
 429     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 430     verticalScrollBar()->setSingleStep(step);
 431
 432     QListView::wheelEvent(event);
 433 }
 434
 435 void DolphinColumnWidget::leaveEvent(QEvent* event)
 436 {
 437     QListView::leaveEvent(event);
 438     // if the mouse is above an item and moved very fast outside the widget,
 439     // no viewportEntered() signal might be emitted although the mouse has been moved
 440     // above the viewport
 441     m_view->m_controller->emitViewportEntered();
 442 }
 443
 444 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 445 {
 446     QListView::selectionChanged(selected, deselected);
 447
 448     QItemSelectionModel* selModel = m_view->selectionModel();
 449     selModel->select(selected, QItemSelectionModel::Select);
 450     selModel->select(deselected, QItemSelectionModel::Deselect);
 451 }
 452
 453 void DolphinColumnWidget::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 454 {
 455     QListView::currentChanged(current, previous);
 456     if (current.isValid() && !m_autoScroller->isActive()) {
 457         scrollTo(current);
 458     }
 459 }
 460
 461 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 462 {
 463     m_view->m_controller->setItemView(this);
 464     m_view->m_controller->emitItemEntered(index);
 465 }
 466
 467 void DolphinColumnWidget::requestActivation()
 468 {
 469     m_view->m_controller->setItemView(this);
 470     m_view->m_controller->requestActivation();
 471     if (!m_active) {
 472         m_view->requestActivation(this);
 473         m_view->m_controller->triggerUrlChangeRequest(m_url);
 474         selectionModel()->clear();
 475     }
 476 }
 477
 478 void DolphinColumnWidget::updateFont()
 479 {
 480     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 481     Q_ASSERT(settings != 0);
 482
 483     if (settings->useSystemFont()) {
 484         m_font = KGlobalSettings::generalFont();
 485     }
 486 }
 487
 488 void DolphinColumnWidget::activate()
 489 {
 490     setFocus(Qt::OtherFocusReason);
 491
 492     connect(this, SIGNAL(clicked(const QModelIndex&)),
 493             m_view->m_controller, SLOT(requestTab(const QModelIndex&)));
 494     if (KGlobalSettings::singleClick()) {
 495         connect(this, SIGNAL(clicked(const QModelIndex&)),
 496                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 497     } else {
 498         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 499                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 500     }
 501
 502     if (selectionModel() && selectionModel()->currentIndex().isValid())
 503         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 504
 505     updateBackground();
 506 }
 507
 508 void DolphinColumnWidget::deactivate()
 509 {
 510     clearFocus();
 511
 512     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 513     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 514     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 515     if (KGlobalSettings::singleClick()) {
 516         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 517                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 518     } else {
 519         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 520                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 521     }
 522
 523     const QModelIndex current = selectionModel()->currentIndex();
 524     selectionModel()->clear();
 525     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 526     updateBackground();
 527 }
 528
 529 #include "dolphincolumnwidget.moc"