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