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 "dolphin_columnmodesettings.h"
  29 #include "dolphin_generalsettings.h"
  30 #include "draganddrophelper.h"
  31 #include "folderexpander.h"
  32 #include "selectionmanager.h"
  33 #include "tooltipmanager.h"
  34
  35 #include <kcolorscheme.h>
  36 #include <kdirlister.h>
  37 #include <kfileitem.h>
  38 #include <kfilepreviewgenerator.h>
  39 #include <kio/previewjob.h>
  40 #include <kiconeffect.h>
  41 #include <kjob.h>
  42 #include <konqmimedata.h>
  43
  44 #include <QApplication>
  45 #include <QClipboard>
  46 #include <QPainter>
  47 #include <QPoint>
  48
  49 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  50                                          DolphinColumnView* columnView,
  51                                          const KUrl& url) :
  52     QListView(parent),
  53     m_active(true),
  54     m_view(columnView),
  55     m_selectionManager(0),
  56     m_url(url),
  57     m_childUrl(),
  58     m_font(),
  59     m_decorationSize(),
  60     m_dirLister(0),
  61     m_dolphinModel(0),
  62     m_proxyModel(0),
  63     m_previewGenerator(0),
  64     m_dropRect()
  65 {
  66     setMouseTracking(true);
  67     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  68     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  69     setSelectionBehavior(SelectItems);
  70     setSelectionMode(QAbstractItemView::ExtendedSelection);
  71     setDragDropMode(QAbstractItemView::DragDrop);
  72     setDropIndicatorShown(false);
  73     setSelectionRectVisible(true);
  74     setEditTriggers(QAbstractItemView::NoEditTriggers);
  75
  76     setVerticalScrollMode(QListView::ScrollPerPixel);
  77     setHorizontalScrollMode(QListView::ScrollPerPixel);
  78
  79     // apply the column mode settings to the widget
  80     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  81     Q_ASSERT(settings != 0);
  82
  83     if (settings->useSystemFont()) {
  84         m_font = KGlobalSettings::generalFont();
  85     } else {
  86         m_font = QFont(settings->fontFamily(),
  87                        settings->fontSize(),
  88                        settings->fontWeight(),
  89                        settings->italicFont());
  90     }
  91
  92     const int iconSize = settings->iconSize();
  93     setDecorationSize(QSize(iconSize, iconSize));
  94
  95     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  96     delegate->setShowToolTipWhenElided(false);
  97     setItemDelegate(delegate);
  98
  99     activate();
 100
 101     connect(this, SIGNAL(viewportEntered()),
 102             m_view->m_controller, SLOT(emitViewportEntered()));
 103     connect(this, SIGNAL(entered(const QModelIndex&)),
 104             this, SLOT(slotEntered(const QModelIndex&)));
 105
 106     m_dirLister = new DolphinDirLister();
 107     m_dirLister->setAutoUpdate(true);
 108     m_dirLister->setMainWindow(window());
 109     m_dirLister->setDelayedMimeTypes(true);
 110     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 111     m_dirLister->setShowingDotFiles(showHiddenFiles);
 112
 113     m_dolphinModel = new DolphinModel(this);
 114     m_dolphinModel->setDirLister(m_dirLister);
 115     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 116
 117     m_proxyModel = new DolphinSortFilterProxyModel(this);
 118     m_proxyModel->setSourceModel(m_dolphinModel);
 119     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 120     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 121     m_proxyModel->setSorting(dolphinView->sorting());
 122     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 123
 124     setModel(m_proxyModel);
 125
 126     if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 127         m_selectionManager = new SelectionManager(this);
 128         connect(m_selectionManager, SIGNAL(selectionChanged()),
 129                 this, SLOT(requestActivation()));
 130         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 131                 m_selectionManager, SLOT(reset()));
 132     }
 133
 134     m_previewGenerator = new KFilePreviewGenerator(this);
 135     m_previewGenerator->setPreviewShown(m_view->m_controller->dolphinView()->showPreview());
 136
 137     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 138         new ToolTipManager(this, m_proxyModel);
 139     }
 140
 141     m_dirLister->openUrl(url, KDirLister::NoFlags);
 142
 143     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 144             this, SLOT(updateFont()));
 145
 146     FolderExpander* folderExpander = new FolderExpander(this, m_proxyModel);
 147     folderExpander->setEnabled(DolphinSettings::instance().generalSettings()->autoExpandFolders());
 148     connect (folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 149              m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 150 }
 151
 152 DolphinColumnWidget::~DolphinColumnWidget()
 153 {
 154     delete m_proxyModel;
 155     m_proxyModel = 0;
 156     delete m_dolphinModel;
 157     m_dolphinModel = 0;
 158     m_dirLister = 0; // deleted by m_dolphinModel
 159 }
 160
 161 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 162 {
 163     setIconSize(size);
 164     m_decorationSize = size;
 165     doItemsLayout();
 166     if (m_previewGenerator != 0) {
 167         m_previewGenerator->updatePreviews();
 168     }
 169     if (m_selectionManager != 0) {
 170         m_selectionManager->reset();
 171     }
 172 }
 173
 174 void DolphinColumnWidget::setActive(bool active)
 175 {
 176     if (m_active == active) {
 177         return;
 178     }
 179
 180     m_active = active;
 181
 182     if (active) {
 183         activate();
 184     } else {
 185         deactivate();
 186     }
 187 }
 188
 189 void DolphinColumnWidget::reload()
 190 {
 191     m_dirLister->stop();
 192     m_dirLister->openUrl(m_url, KDirLister::Reload);
 193 }
 194
 195 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 196 {
 197     m_proxyModel->setSorting(sorting);
 198 }
 199
 200 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 201 {
 202     m_proxyModel->setSortOrder(order);
 203 }
 204
 205 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 206 {
 207     if (show != m_dirLister->showingDotFiles()) {
 208         m_dirLister->setShowingDotFiles(show);
 209         m_dirLister->stop();
 210         m_dirLister->openUrl(m_url, KDirLister::Reload);
 211     }
 212 }
 213
 214 void DolphinColumnWidget::setShowPreview(bool show)
 215 {
 216     m_previewGenerator->setPreviewShown(show);
 217
 218     m_dirLister->stop();
 219     m_dirLister->openUrl(m_url, KDirLister::Reload);
 220 }
 221
 222 void DolphinColumnWidget::updateBackground()
 223 {
 224     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 225     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 226     // DolphinView a common helper-class should be available which can be shared
 227     // by all view implementations -> no hardcoded value anymore
 228     const QPalette::ColorRole role = viewport()->backgroundRole();
 229     QColor color = viewport()->palette().color(role);
 230     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 231
 232     QPalette palette = viewport()->palette();
 233     palette.setColor(role, color);
 234     viewport()->setPalette(palette);
 235
 236     update();
 237 }
 238
 239 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 240 {
 241     m_proxyModel->setFilterRegExp(nameFilter);
 242 }
 243
 244 void DolphinColumnWidget::editItem(const KFileItem& item)
 245 {
 246     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 247     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 248     if (proxyIndex.isValid()) {
 249         edit(proxyIndex);
 250     }
 251 }
 252
 253 KFileItem DolphinColumnWidget::itemAt(const QPoint& pos) const
 254 {
 255     KFileItem item;
 256     const QModelIndex index = indexAt(pos);
 257     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 258         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 259         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 260     }
 261     return item;
 262 }
 263
 264 KFileItemList DolphinColumnWidget::selectedItems() const
 265 {
 266     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 267     KFileItemList itemList;
 268
 269     const QModelIndexList indexList = selection.indexes();
 270     foreach (const QModelIndex &index, indexList) {
 271         KFileItem item = m_dolphinModel->itemForIndex(index);
 272         if (!item.isNull()) {
 273             itemList.append(item);
 274         }
 275     }
 276
 277     return itemList;
 278 }
 279
 280 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 281 {
 282     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 283     viewOptions.font = m_font;
 284     viewOptions.decorationSize = m_decorationSize;
 285     viewOptions.showDecorationSelected = true;
 286     return viewOptions;
 287 }
 288
 289 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 290 {
 291     DragAndDropHelper::startDrag(this, supportedActions, m_view->m_controller);
 292 }
 293
 294 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 295 {
 296     if (DragAndDropHelper::isMimeDataSupported(event->mimeData())) {
 297         event->acceptProposedAction();
 298     }
 299 }
 300
 301 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 302 {
 303     QListView::dragLeaveEvent(event);
 304     setDirtyRegion(m_dropRect);
 305 }
 306
 307 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 308 {
 309     QListView::dragMoveEvent(event);
 310
 311     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 312     const QModelIndex index = indexAt(event->pos());
 313     setDirtyRegion(m_dropRect);
 314
 315     m_dropRect.setSize(QSize()); // set as invalid
 316     if (index.isValid()) {
 317         m_view->m_controller->setItemView(this);
 318         const KFileItem item = m_view->m_controller->itemForIndex(index);
 319         if (!item.isNull() && item.isDir()) {
 320             m_dropRect = visualRect(index);
 321         }
 322     }
 323     setDirtyRegion(m_dropRect);
 324
 325     if (DragAndDropHelper::isMimeDataSupported(event->mimeData())) {
 326         // accept url drops, independently from the destination item
 327         event->acceptProposedAction();
 328     }
 329 }
 330
 331 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 332 {
 333     const QModelIndex index = indexAt(event->pos());
 334     m_view->m_controller->setItemView(this);
 335     const KFileItem item = m_view->m_controller->itemForIndex(index);
 336     m_view->m_controller->indicateDroppedUrls(item, url(), event);
 337     QListView::dropEvent(event);
 338 }
 339
 340 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 341 {
 342     if (!m_childUrl.isEmpty()) {
 343         // indicate the shown URL of the next column by highlighting the shown folder item
 344         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 345         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 346         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 347             const QRect itemRect = visualRect(proxyIndex);
 348             QPainter painter(viewport());
 349             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 350             color.setAlpha(32);
 351             painter.setPen(Qt::NoPen);
 352             painter.setBrush(color);
 353             painter.drawRect(itemRect);
 354         }
 355     }
 356
 357     QListView::paintEvent(event);
 358 }
 359
 360 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 361 {
 362     requestActivation();
 363     if (!indexAt(event->pos()).isValid()) {
 364         if (QApplication::mouseButtons() & Qt::MidButton) {
 365             m_view->m_controller->replaceUrlByClipboard();
 366         }
 367     } else if (event->button() == Qt::LeftButton) {
 368         // TODO: see comment in DolphinIconsView::mousePressEvent()
 369         setState(QAbstractItemView::DraggingState);
 370     }
 371     QListView::mousePressEvent(event);
 372 }
 373
 374 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 375 {
 376     QListView::keyPressEvent(event);
 377     requestActivation();
 378     m_view->m_controller->handleKeyPressEvent(event);
 379 }
 380
 381 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 382 {
 383     if (!m_active) {
 384         m_view->requestActivation(this);
 385         Q_ASSERT(m_view->m_controller->itemView() == this);
 386         m_view->m_controller->triggerUrlChangeRequest(m_url);
 387     }
 388     Q_ASSERT(m_active);
 389
 390     QListView::contextMenuEvent(event);
 391
 392     const QModelIndex index = indexAt(event->pos());
 393     if (!index.isValid()) {
 394         clearSelection();
 395     }
 396
 397     const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 398     Q_ASSERT(m_view->m_controller->itemView() == this);
 399     m_view->m_controller->triggerContextMenuRequest(pos);
 400 }
 401
 402 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 403 {
 404     if (m_selectionManager != 0) {
 405         m_selectionManager->reset();
 406     }
 407
 408     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 409     if (event->modifiers() & Qt::ControlModifier) {
 410         event->ignore();
 411         return;
 412     }
 413
 414     QListView::wheelEvent(event);
 415 }
 416
 417 void DolphinColumnWidget::leaveEvent(QEvent* event)
 418 {
 419     QListView::leaveEvent(event);
 420     // if the mouse is above an item and moved very fast outside the widget,
 421     // no viewportEntered() signal might be emitted although the mouse has been moved
 422     // above the viewport
 423     m_view->m_controller->emitViewportEntered();
 424 }
 425
 426 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 427 {
 428     QListView::selectionChanged(selected, deselected);
 429
 430     QItemSelectionModel* selModel = m_view->selectionModel();
 431     selModel->select(selected, QItemSelectionModel::Select);
 432     selModel->select(deselected, QItemSelectionModel::Deselect);
 433 }
 434
 435 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 436 {
 437     m_view->m_controller->setItemView(this);
 438     m_view->m_controller->emitItemEntered(index);
 439 }
 440
 441 void DolphinColumnWidget::requestActivation()
 442 {
 443     m_view->m_controller->setItemView(this);
 444     m_view->m_controller->requestActivation();
 445     if (!m_active) {
 446         m_view->requestActivation(this);
 447         m_view->m_controller->triggerUrlChangeRequest(m_url);
 448         selectionModel()->clear();
 449     }
 450 }
 451
 452 void DolphinColumnWidget::updateFont()
 453 {
 454     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 455     Q_ASSERT(settings != 0);
 456
 457     if (settings->useSystemFont()) {
 458         m_font = KGlobalSettings::generalFont();
 459     }
 460 }
 461
 462 void DolphinColumnWidget::activate()
 463 {
 464     setFocus(Qt::OtherFocusReason);
 465
 466     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 467     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 468     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 469     if (KGlobalSettings::singleClick()) {
 470         connect(this, SIGNAL(clicked(const QModelIndex&)),
 471                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 472     } else {
 473         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 474                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 475     }
 476
 477     if (selectionModel() && selectionModel()->currentIndex().isValid())
 478         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 479
 480     updateBackground();
 481 }
 482
 483 void DolphinColumnWidget::deactivate()
 484 {
 485     clearFocus();
 486
 487     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 488     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 489     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 490     if (KGlobalSettings::singleClick()) {
 491         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 492                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 493     } else {
 494         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 495                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 496     }
 497
 498     const QModelIndex current = selectionModel()->currentIndex();
 499     selectionModel()->clear();
 500     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 501     updateBackground();
 502 }
 503
 504 #include "dolphincolumnwidget.moc"