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::instance().startDrag(this, supportedActions, m_view->m_controller);
 292 }
 293
 294 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 295 {
 296     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 297         event->acceptProposedAction();
 298         requestActivation();
 299     }
 300 }
 301
 302 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 303 {
 304     QListView::dragLeaveEvent(event);
 305     setDirtyRegion(m_dropRect);
 306 }
 307
 308 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 309 {
 310     QListView::dragMoveEvent(event);
 311
 312     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 313     const QModelIndex index = indexAt(event->pos());
 314     setDirtyRegion(m_dropRect);
 315
 316     m_dropRect.setSize(QSize()); // set as invalid
 317     if (index.isValid()) {
 318         m_view->m_controller->setItemView(this);
 319         const KFileItem item = m_view->m_controller->itemForIndex(index);
 320         if (!item.isNull() && item.isDir()) {
 321             m_dropRect = visualRect(index);
 322         }
 323     }
 324     setDirtyRegion(m_dropRect);
 325
 326     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 327         // accept url drops, independently from the destination item
 328         event->acceptProposedAction();
 329     }
 330 }
 331
 332 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 333 {
 334     const QModelIndex index = indexAt(event->pos());
 335     m_view->m_controller->setItemView(this);
 336     const KFileItem item = m_view->m_controller->itemForIndex(index);
 337     m_view->m_controller->indicateDroppedUrls(item, url(), event);
 338     QListView::dropEvent(event);
 339 }
 340
 341 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 342 {
 343     if (!m_childUrl.isEmpty()) {
 344         // indicate the shown URL of the next column by highlighting the shown folder item
 345         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 346         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 347         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 348             const QRect itemRect = visualRect(proxyIndex);
 349             QPainter painter(viewport());
 350             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 351             color.setAlpha(32);
 352             painter.setPen(Qt::NoPen);
 353             painter.setBrush(color);
 354             painter.drawRect(itemRect);
 355         }
 356     }
 357
 358     QListView::paintEvent(event);
 359 }
 360
 361 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 362 {
 363     requestActivation();
 364     if (!indexAt(event->pos()).isValid()) {
 365         if (QApplication::mouseButtons() & Qt::MidButton) {
 366             m_view->m_controller->replaceUrlByClipboard();
 367         }
 368     } else if (event->button() == Qt::LeftButton) {
 369         // TODO: see comment in DolphinIconsView::mousePressEvent()
 370         setState(QAbstractItemView::DraggingState);
 371     }
 372     QListView::mousePressEvent(event);
 373 }
 374
 375 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 376 {
 377     QListView::keyPressEvent(event);
 378     requestActivation();
 379     m_view->m_controller->handleKeyPressEvent(event);
 380 }
 381
 382 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 383 {
 384     if (!m_active) {
 385         m_view->requestActivation(this);
 386         Q_ASSERT(m_view->m_controller->itemView() == this);
 387         m_view->m_controller->triggerUrlChangeRequest(m_url);
 388     }
 389     Q_ASSERT(m_active);
 390
 391     QListView::contextMenuEvent(event);
 392
 393     const QModelIndex index = indexAt(event->pos());
 394     if (!index.isValid()) {
 395         clearSelection();
 396     }
 397
 398     const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 399     Q_ASSERT(m_view->m_controller->itemView() == this);
 400     m_view->m_controller->triggerContextMenuRequest(pos);
 401 }
 402
 403 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 404 {
 405     if (m_selectionManager != 0) {
 406         m_selectionManager->reset();
 407     }
 408
 409     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 410     if (event->modifiers() & Qt::ControlModifier) {
 411         event->ignore();
 412         return;
 413     }
 414
 415     QListView::wheelEvent(event);
 416 }
 417
 418 void DolphinColumnWidget::leaveEvent(QEvent* event)
 419 {
 420     QListView::leaveEvent(event);
 421     // if the mouse is above an item and moved very fast outside the widget,
 422     // no viewportEntered() signal might be emitted although the mouse has been moved
 423     // above the viewport
 424     m_view->m_controller->emitViewportEntered();
 425 }
 426
 427 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 428 {
 429     QListView::selectionChanged(selected, deselected);
 430
 431     QItemSelectionModel* selModel = m_view->selectionModel();
 432     selModel->select(selected, QItemSelectionModel::Select);
 433     selModel->select(deselected, QItemSelectionModel::Deselect);
 434 }
 435
 436 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 437 {
 438     m_view->m_controller->setItemView(this);
 439     m_view->m_controller->emitItemEntered(index);
 440 }
 441
 442 void DolphinColumnWidget::requestActivation()
 443 {
 444     m_view->m_controller->setItemView(this);
 445     m_view->m_controller->requestActivation();
 446     if (!m_active) {
 447         m_view->requestActivation(this);
 448         m_view->m_controller->triggerUrlChangeRequest(m_url);
 449         selectionModel()->clear();
 450     }
 451 }
 452
 453 void DolphinColumnWidget::updateFont()
 454 {
 455     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 456     Q_ASSERT(settings != 0);
 457
 458     if (settings->useSystemFont()) {
 459         m_font = KGlobalSettings::generalFont();
 460     }
 461 }
 462
 463 void DolphinColumnWidget::activate()
 464 {
 465     setFocus(Qt::OtherFocusReason);
 466
 467     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 468     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 469     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 470     if (KGlobalSettings::singleClick()) {
 471         connect(this, SIGNAL(clicked(const QModelIndex&)),
 472                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 473     } else {
 474         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 475                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 476     }
 477
 478     if (selectionModel() && selectionModel()->currentIndex().isValid())
 479         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 480
 481     updateBackground();
 482 }
 483
 484 void DolphinColumnWidget::deactivate()
 485 {
 486     clearFocus();
 487
 488     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 489     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 490     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 491     if (KGlobalSettings::singleClick()) {
 492         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 493                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 494     } else {
 495         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 496                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 497     }
 498
 499     const QModelIndex current = selectionModel()->currentIndex();
 500     selectionModel()->clear();
 501     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 502     updateBackground();
 503 }
 504
 505 #include "dolphincolumnwidget.moc"