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