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 "iconmanager.h"
  32 #include "selectionmanager.h"
  33 #include "tooltipmanager.h"
  34
  35 #include <kcolorscheme.h>
  36 #include <kdirlister.h>
  37 #include <kfileitem.h>
  38 #include <kio/previewjob.h>
  39 #include <kiconeffect.h>
  40 #include <kjob.h>
  41 #include <konqmimedata.h>
  42
  43 #include <QApplication>
  44 #include <QClipboard>
  45 #include <QPainter>
  46 #include <QPoint>
  47
  48 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  49                                          DolphinColumnView* columnView,
  50                                          const KUrl& url) :
  51     QListView(parent),
  52     m_active(true),
  53     m_view(columnView),
  54     m_selectionManager(0),
  55     m_url(url),
  56     m_childUrl(),
  57     m_font(),
  58     m_decorationSize(),
  59     m_dirLister(0),
  60     m_dolphinModel(0),
  61     m_proxyModel(0),
  62     m_iconManager(0),
  63     m_dropRect()
  64 {
  65     setMouseTracking(true);
  66     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  67     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  68     setSelectionBehavior(SelectItems);
  69     setSelectionMode(QAbstractItemView::ExtendedSelection);
  70     setDragDropMode(QAbstractItemView::DragDrop);
  71     setDropIndicatorShown(false);
  72     setSelectionRectVisible(true);
  73     setEditTriggers(QAbstractItemView::NoEditTriggers);
  74
  75     setVerticalScrollMode(QListView::ScrollPerPixel);
  76     setHorizontalScrollMode(QListView::ScrollPerPixel);
  77
  78     // apply the column mode settings to the widget
  79     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  80     Q_ASSERT(settings != 0);
  81
  82     if (settings->useSystemFont()) {
  83         m_font = KGlobalSettings::generalFont();
  84     } else {
  85         m_font = QFont(settings->fontFamily(),
  86                        settings->fontSize(),
  87                        settings->fontWeight(),
  88                        settings->italicFont());
  89     }
  90
  91     const int iconSize = settings->iconSize();
  92     setDecorationSize(QSize(iconSize, iconSize));
  93
  94     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  95     setItemDelegate(delegate);
  96
  97     activate();
  98
  99     connect(this, SIGNAL(viewportEntered()),
 100             m_view->m_controller, SLOT(emitViewportEntered()));
 101     connect(this, SIGNAL(entered(const QModelIndex&)),
 102             this, SLOT(slotEntered(const QModelIndex&)));
 103
 104     //m_dirLister = new DolphinDirLister(); TODO
 105     m_dirLister = new KDirLister();
 106     m_dirLister->setAutoUpdate(true);
 107     m_dirLister->setMainWindow(window());
 108     m_dirLister->setDelayedMimeTypes(true);
 109     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 110     m_dirLister->setShowingDotFiles(showHiddenFiles);
 111
 112     m_dolphinModel = new DolphinModel(this);
 113     m_dolphinModel->setDirLister(m_dirLister);
 114     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 115
 116     m_proxyModel = new DolphinSortFilterProxyModel(this);
 117     m_proxyModel->setSourceModel(m_dolphinModel);
 118     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 119     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 120     m_proxyModel->setSorting(dolphinView->sorting());
 121     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 122
 123     setModel(m_proxyModel);
 124
 125     if (DolphinSettings::instance().generalSettings()->showSelectionToggle()) {
 126         m_selectionManager = new SelectionManager(this);
 127         connect(m_selectionManager, SIGNAL(selectionChanged()),
 128                 this, SLOT(requestActivation()));
 129         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 130                 m_selectionManager, SLOT(reset()));
 131     }
 132
 133     m_iconManager = new IconManager(this, m_proxyModel);
 134     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 135
 136     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 137         new ToolTipManager(this, m_proxyModel);
 138     }
 139
 140     m_dirLister->openUrl(url, KDirLister::NoFlags);
 141
 142     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 143             this, SLOT(updateFont()));
 144 }
 145
 146 DolphinColumnWidget::~DolphinColumnWidget()
 147 {
 148     delete m_proxyModel;
 149     m_proxyModel = 0;
 150     delete m_dolphinModel;
 151     m_dolphinModel = 0;
 152     m_dirLister = 0; // deleted by m_dolphinModel
 153 }
 154
 155 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 156 {
 157     setIconSize(size);
 158     m_decorationSize = size;
 159     doItemsLayout();
 160     if (m_iconManager != 0) {
 161         m_iconManager->updatePreviews();
 162     }
 163     if (m_selectionManager != 0) {
 164         m_selectionManager->reset();
 165     }
 166 }
 167
 168 void DolphinColumnWidget::setActive(bool active)
 169 {
 170     if (m_active == active) {
 171         return;
 172     }
 173
 174     m_active = active;
 175
 176     if (active) {
 177         activate();
 178     } else {
 179         deactivate();
 180     }
 181 }
 182
 183 void DolphinColumnWidget::reload()
 184 {
 185     m_dirLister->stop();
 186     m_dirLister->openUrl(m_url, KDirLister::Reload);
 187 }
 188
 189 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 190 {
 191     m_proxyModel->setSorting(sorting);
 192 }
 193
 194 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 195 {
 196     m_proxyModel->setSortOrder(order);
 197 }
 198
 199 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 200 {
 201     if (show != m_dirLister->showingDotFiles()) {
 202         m_dirLister->setShowingDotFiles(show);
 203         m_dirLister->stop();
 204         m_dirLister->openUrl(m_url, KDirLister::Reload);
 205     }
 206 }
 207
 208 void DolphinColumnWidget::setShowPreview(bool show)
 209 {
 210     m_iconManager->setShowPreview(show);
 211
 212     m_dirLister->stop();
 213     m_dirLister->openUrl(m_url, KDirLister::Reload);
 214 }
 215
 216 void DolphinColumnWidget::updateBackground()
 217 {
 218     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 219     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 220     // DolphinView a common helper-class should be available which can be shared
 221     // by all view implementations -> no hardcoded value anymore
 222     const QPalette::ColorRole role = viewport()->backgroundRole();
 223     QColor color = viewport()->palette().color(role);
 224     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 225
 226     QPalette palette = viewport()->palette();
 227     palette.setColor(role, color);
 228     viewport()->setPalette(palette);
 229
 230     update();
 231 }
 232
 233 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 234 {
 235     m_proxyModel->setFilterRegExp(nameFilter);
 236 }
 237
 238 void DolphinColumnWidget::editItem(const KFileItem& item)
 239 {
 240     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 241     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 242     if (proxyIndex.isValid()) {
 243         edit(proxyIndex);
 244     }
 245 }
 246
 247 KFileItem DolphinColumnWidget::itemAt(const QPoint& pos) const
 248 {
 249     KFileItem item;
 250     const QModelIndex index = indexAt(pos);
 251     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 252         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 253         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 254     }
 255     return item;
 256 }
 257
 258 KFileItemList DolphinColumnWidget::selectedItems() const
 259 {
 260     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 261     KFileItemList itemList;
 262
 263     const QModelIndexList indexList = selection.indexes();
 264     foreach (const QModelIndex &index, indexList) {
 265         KFileItem item = m_dolphinModel->itemForIndex(index);
 266         if (!item.isNull()) {
 267             itemList.append(item);
 268         }
 269     }
 270
 271     return itemList;
 272 }
 273
 274 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 275 {
 276     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 277     viewOptions.font = m_font;
 278     viewOptions.decorationSize = m_decorationSize;
 279     viewOptions.showDecorationSelected = true;
 280     return viewOptions;
 281 }
 282
 283 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 284 {
 285     DragAndDropHelper::startDrag(this, supportedActions);
 286 }
 287
 288 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 289 {
 290     if (event->mimeData()->hasUrls()) {
 291         event->acceptProposedAction();
 292     }
 293 }
 294
 295 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 296 {
 297     QListView::dragLeaveEvent(event);
 298     setDirtyRegion(m_dropRect);
 299 }
 300
 301 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 302 {
 303     QListView::dragMoveEvent(event);
 304
 305     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 306     const QModelIndex index = indexAt(event->pos());
 307     setDirtyRegion(m_dropRect);
 308
 309     m_dropRect.setSize(QSize()); // set as invalid
 310     if (index.isValid()) {
 311         m_view->m_controller->setItemView(this);
 312         const KFileItem item = m_view->m_controller->itemForIndex(index);
 313         if (!item.isNull() && item.isDir()) {
 314             m_dropRect = visualRect(index);
 315         }
 316     }
 317     setDirtyRegion(m_dropRect);
 318
 319     if (event->mimeData()->hasUrls()) {
 320         // accept url drops, independently from the destination item
 321         event->acceptProposedAction();
 322     }
 323 }
 324
 325 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 326 {
 327     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 328     if (!urls.isEmpty()) {
 329         const QModelIndex index = indexAt(event->pos());
 330         m_view->m_controller->setItemView(this);
 331         const KFileItem item = m_view->m_controller->itemForIndex(index);
 332         m_view->m_controller->indicateDroppedUrls(urls,
 333                                                   url(),
 334                                                   item);
 335         event->acceptProposedAction();
 336     }
 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"