src/dolphincolumnview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 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 "dolphincolumnview.h"
  21
  22 #include "dolphinmodel.h"
  23 #include "dolphincolumnviewcontainer.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 "tooltips/tooltipmanager.h"
  34 #include "versioncontrolobserver.h"
  35 #include "viewextensionsfactory.h"
  36 #include "zoomlevelinfo.h"
  37
  38 #include <kcolorscheme.h>
  39 #include <kdirlister.h>
  40 #include <kfileitem.h>
  41 #include <kio/previewjob.h>
  42 #include <kiconeffect.h>
  43 #include <kjob.h>
  44 #include <konqmimedata.h>
  45
  46 #include <QApplication>
  47 #include <QClipboard>
  48 #include <QPainter>
  49 #include <QPoint>
  50 #include <QScrollBar>
  51
  52 DolphinColumnView::DolphinColumnView(QWidget* parent,
  53                                      DolphinColumnViewContainer* container,
  54                                      const KUrl& url) :
  55     QListView(parent),
  56     m_active(false),
  57     m_container(container),
  58     m_extensionsFactory(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_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     // apply the column mode settings to the widget
  82     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  83     Q_ASSERT(settings != 0);
  84
  85     if (settings->useSystemFont()) {
  86         m_font = KGlobalSettings::generalFont();
  87     } else {
  88         m_font = QFont(settings->fontFamily(),
  89                        settings->fontSize(),
  90                        settings->fontWeight(),
  91                        settings->italicFont());
  92     }
  93
  94     activate();
  95
  96     connect(this, SIGNAL(viewportEntered()),
  97             m_container->m_controller, SLOT(emitViewportEntered()));
  98     connect(this, SIGNAL(entered(const QModelIndex&)),
  99             this, SLOT(slotEntered(const QModelIndex&)));
 100
 101     const DolphinView* dolphinView = m_container->m_controller->dolphinView();
 102     connect(dolphinView, SIGNAL(showPreviewChanged()),
 103             this, SLOT(slotShowPreviewChanged()));
 104
 105     m_dirLister = new DolphinDirLister();
 106     m_dirLister->setAutoUpdate(true);
 107     m_dirLister->setMainWindow(window());
 108     m_dirLister->setDelayedMimeTypes(true);
 109     const bool showHiddenFiles = m_container->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
 120     m_proxyModel->setSorting(dolphinView->sorting());
 121     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 122     m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 123
 124     setModel(m_proxyModel);
 125
 126     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 127             this, SLOT(updateFont()));
 128
 129     /*FolderExpander* folderExpander = new FolderExpander(this, m_proxyModel);
 130     folderExpander->setEnabled(DolphinSettings::instance().generalSettings()->autoExpandFolders());
 131     connect (folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 132              m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 133
 134     new VersionControlObserver(this);*/
 135
 136     DolphinController* controller = m_container->m_controller;
 137     connect(controller, SIGNAL(zoomLevelChanged(int)),
 138             this, SLOT(setZoomLevel(int)));
 139
 140     const QString nameFilter = controller->nameFilter();
 141     if (!nameFilter.isEmpty()) {
 142         m_proxyModel->setFilterRegExp(nameFilter);
 143     }
 144     connect(controller, SIGNAL(nameFilterChanged(const QString&)),
 145             this, SLOT(setNameFilter(const QString&)));
 146
 147     m_extensionsFactory = new ViewExtensionsFactory(this, controller);
 148     updateDecorationSize(dolphinView->showPreview());
 149 }
 150
 151 DolphinColumnView::~DolphinColumnView()
 152 {
 153     delete m_proxyModel;
 154     m_proxyModel = 0;
 155     delete m_dolphinModel;
 156     m_dolphinModel = 0;
 157     m_dirLister = 0; // deleted by m_dolphinModel
 158 }
 159
 160 void DolphinColumnView::setActive(bool active)
 161 {
 162     if (active && (m_container->focusProxy() != this)) {
 163         m_container->setFocusProxy(this);
 164     }
 165
 166     if (m_active != active) {
 167         m_active = active;
 168
 169         if (active) {
 170             activate();
 171         } else {
 172             deactivate();
 173         }
 174     }
 175 }
 176
 177 void DolphinColumnView::updateBackground()
 178 {
 179     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 180     // cleaning up the cut-indication of DolphinColumnView with the code from
 181     // DolphinView a common helper-class should be available which can be shared
 182     // by all view implementations -> no hardcoded value anymore
 183     const QPalette::ColorRole role = viewport()->backgroundRole();
 184     QColor color = viewport()->palette().color(role);
 185     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 186
 187     QPalette palette = viewport()->palette();
 188     palette.setColor(role, color);
 189     viewport()->setPalette(palette);
 190
 191     update();
 192 }
 193
 194 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 195 {
 196     KFileItem item;
 197     const QModelIndex index = indexAt(pos);
 198     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 199         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 200         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 201     }
 202     return item;
 203 }
 204
 205 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 206 {
 207     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 208     viewOptions.font = m_font;
 209     viewOptions.decorationSize = m_decorationSize;
 210     viewOptions.showDecorationSelected = true;
 211     return viewOptions;
 212 }
 213
 214 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 215 {
 216     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_controller);
 217 }
 218
 219 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 220 {
 221     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 222         event->acceptProposedAction();
 223         requestActivation();
 224     }
 225 }
 226
 227 void DolphinColumnView::dragLeaveEvent(QDragLeaveEvent* event)
 228 {
 229     QListView::dragLeaveEvent(event);
 230     setDirtyRegion(m_dropRect);
 231 }
 232
 233 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 234 {
 235     QListView::dragMoveEvent(event);
 236
 237     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 238     const QModelIndex index = indexAt(event->pos());
 239     setDirtyRegion(m_dropRect);
 240
 241     m_dropRect.setSize(QSize()); // set as invalid
 242     if (index.isValid()) {
 243         m_container->m_controller->setItemView(this);
 244         const KFileItem item = m_container->m_controller->itemForIndex(index);
 245         if (!item.isNull() && item.isDir()) {
 246             m_dropRect = visualRect(index);
 247         }
 248     }
 249     setDirtyRegion(m_dropRect);
 250
 251     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 252         // accept url drops, independently from the destination item
 253         event->acceptProposedAction();
 254     }
 255 }
 256
 257 void DolphinColumnView::dropEvent(QDropEvent* event)
 258 {
 259     const QModelIndex index = indexAt(event->pos());
 260     m_container->m_controller->setItemView(this);
 261     const KFileItem item = m_container->m_controller->itemForIndex(index);
 262     m_container->m_controller->indicateDroppedUrls(item, url(), event);
 263     QListView::dropEvent(event);
 264 }
 265
 266 void DolphinColumnView::paintEvent(QPaintEvent* event)
 267 {
 268     if (!m_childUrl.isEmpty()) {
 269         // indicate the shown URL of the next column by highlighting the shown folder item
 270         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 271         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 272         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 273             const QRect itemRect = visualRect(proxyIndex);
 274             QPainter painter(viewport());
 275             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 276             color.setAlpha(32);
 277             painter.setPen(Qt::NoPen);
 278             painter.setBrush(color);
 279             painter.drawRect(itemRect);
 280         }
 281     }
 282
 283     QListView::paintEvent(event);
 284 }
 285
 286 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 287 {
 288     requestActivation();
 289     if (!indexAt(event->pos()).isValid()) {
 290         if (QApplication::mouseButtons() & Qt::MidButton) {
 291             m_container->m_controller->replaceUrlByClipboard();
 292         }
 293     } else if (event->button() == Qt::LeftButton) {
 294         // TODO: see comment in DolphinIconsView::mousePressEvent()
 295         setState(QAbstractItemView::DraggingState);
 296     }
 297     QListView::mousePressEvent(event);
 298 }
 299
 300 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 301 {
 302     QListView::keyPressEvent(event);
 303     requestActivation();
 304
 305     DolphinController* controller = m_container->m_controller;
 306     controller->handleKeyPressEvent(event);
 307     switch (event->key()) {
 308     case Qt::Key_Right: {
 309         // Special key handling for the column: A Key_Right should
 310         // open a new column for the currently selected folder.
 311         const QModelIndex index = currentIndex();
 312         const KFileItem item = controller->itemForIndex(index);
 313         if (!item.isNull() && item.isDir()) {
 314             controller->emitItemTriggered(item);
 315         }
 316         break;
 317     }
 318
 319     case Qt::Key_Escape:
 320         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(),
 321                                           QItemSelectionModel::Current |
 322                                           QItemSelectionModel::Clear);
 323         break;
 324
 325     default:
 326         break;
 327     }
 328 }
 329
 330 void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
 331 {
 332     if (!m_active) {
 333         m_container->requestActivation(this);
 334         Q_ASSERT(m_container->m_controller->itemView() == this);
 335         m_container->m_controller->triggerUrlChangeRequest(m_url);
 336     }
 337     Q_ASSERT(m_active);
 338
 339     QListView::contextMenuEvent(event);
 340
 341     const QModelIndex index = indexAt(event->pos());
 342     if (!index.isValid()) {
 343         clearSelection();
 344     }
 345
 346     const QPoint pos = m_container->viewport()->mapFromGlobal(event->globalPos());
 347     Q_ASSERT(m_container->m_controller->itemView() == this);
 348     m_container->m_controller->triggerContextMenuRequest(pos);
 349 }
 350
 351 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 352 {
 353     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 354     if (event->modifiers() & Qt::ControlModifier) {
 355         event->ignore();
 356         return;
 357     }
 358
 359     const int height = m_decorationSize.height();
 360     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 361     verticalScrollBar()->setSingleStep(step);
 362
 363     QListView::wheelEvent(event);
 364 }
 365
 366 void DolphinColumnView::leaveEvent(QEvent* event)
 367 {
 368     QListView::leaveEvent(event);
 369     // if the mouse is above an item and moved very fast outside the widget,
 370     // no viewportEntered() signal might be emitted although the mouse has been moved
 371     // above the viewport
 372     m_container->m_controller->emitViewportEntered();
 373 }
 374
 375 void DolphinColumnView::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 376 {
 377     QListView::selectionChanged(selected, deselected);
 378
 379     //QItemSelectionModel* selModel = m_container->selectionModel();
 380     //selModel->select(selected, QItemSelectionModel::Select);
 381     //selModel->select(deselected, QItemSelectionModel::Deselect);
 382 }
 383
 384 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 385 {
 386     QListView::currentChanged(current, previous);
 387     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 388 }
 389
 390 void DolphinColumnView::setNameFilter(const QString& nameFilter)
 391 {
 392     m_proxyModel->setFilterRegExp(nameFilter);
 393 }
 394
 395 void DolphinColumnView::setZoomLevel(int level)
 396 {
 397     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 398     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 399
 400     const bool showPreview = m_container->m_controller->dolphinView()->showPreview();
 401     if (showPreview) {
 402         settings->setPreviewSize(size);
 403     } else {
 404         settings->setIconSize(size);
 405     }
 406
 407     updateDecorationSize(showPreview);
 408 }
 409
 410 void DolphinColumnView::slotEntered(const QModelIndex& index)
 411 {
 412     m_container->m_controller->setItemView(this);
 413     m_container->m_controller->emitItemEntered(index);
 414 }
 415
 416 void DolphinColumnView::requestActivation()
 417 {
 418     m_container->m_controller->setItemView(this);
 419     m_container->m_controller->requestActivation();
 420     if (!m_active) {
 421         m_container->requestActivation(this);
 422         m_container->m_controller->triggerUrlChangeRequest(m_url);
 423         selectionModel()->clear();
 424     }
 425 }
 426
 427 void DolphinColumnView::updateFont()
 428 {
 429     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 430     Q_ASSERT(settings != 0);
 431
 432     if (settings->useSystemFont()) {
 433         m_font = KGlobalSettings::generalFont();
 434     }
 435 }
 436
 437 void DolphinColumnView::slotShowPreviewChanged()
 438 {
 439     const DolphinView* view = m_container->m_controller->dolphinView();
 440     updateDecorationSize(view->showPreview());
 441 }
 442
 443 void DolphinColumnView::activate()
 444 {
 445     setFocus(Qt::OtherFocusReason);
 446
 447     if (KGlobalSettings::singleClick()) {
 448         connect(this, SIGNAL(clicked(const QModelIndex&)),
 449                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 450     } else {
 451         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 452                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 453     }
 454
 455     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 456         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 457     }
 458
 459     updateBackground();
 460 }
 461
 462 void DolphinColumnView::deactivate()
 463 {
 464     clearFocus();
 465     if (KGlobalSettings::singleClick()) {
 466         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 467                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 468     } else {
 469         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 470                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 471     }
 472
 473     const QModelIndex current = selectionModel()->currentIndex();
 474     selectionModel()->clear();
 475     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 476     updateBackground();
 477 }
 478
 479 void DolphinColumnView::updateDecorationSize(bool showPreview)
 480 {
 481     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 482     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 483     const QSize size(iconSize, iconSize);
 484     setIconSize(size);
 485
 486     m_decorationSize = size;
 487
 488     doItemsLayout();
 489 }
 490
 491 #include "dolphincolumnview.moc"