src/views/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 "dolphinviewcontroller.h"
  25 #include "dolphindirlister.h"
  26 #include "dolphinfileitemdelegate.h"
  27 #include "dolphinsortfilterproxymodel.h"
  28 #include "settings/dolphinsettings.h"
  29 #include "dolphinviewautoscroller.h"
  30 #include "dolphin_columnmodesettings.h"
  31 #include "dolphin_generalsettings.h"
  32 #include "draganddrophelper.h"
  33 #include "folderexpander.h"
  34 #include "tooltips/tooltipmanager.h"
  35 #include "viewextensionsfactory.h"
  36 #include "viewmodecontroller.h"
  37 #include "zoomlevelinfo.h"
  38
  39 #include <kcolorscheme.h>
  40 #include <kdirlister.h>
  41 #include <kfileitem.h>
  42 #include <kio/previewjob.h>
  43 #include <kiconeffect.h>
  44 #include <kjob.h>
  45 #include <konqmimedata.h>
  46
  47 #include <QApplication>
  48 #include <QClipboard>
  49 #include <QHeaderView>
  50 #include <QPainter>
  51 #include <QPoint>
  52 #include <QScrollBar>
  53
  54 DolphinColumnView::DolphinColumnView(QWidget* parent,
  55                                      DolphinColumnViewContainer* container,
  56                                      const KUrl& url) :
  57     DolphinTreeView(parent),
  58     m_active(false),
  59     m_container(container),
  60     m_extensionsFactory(0),
  61     m_url(url),
  62     m_childUrl(),
  63     m_font(),
  64     m_decorationSize(),
  65     m_dirLister(0),
  66     m_dolphinModel(0),
  67     m_proxyModel(0)
  68 {
  69     setMouseTracking(true);
  70     setAcceptDrops(true);
  71     setUniformRowHeights(true);
  72     setSelectionBehavior(SelectItems);
  73     setSelectionMode(QAbstractItemView::ExtendedSelection);
  74     setDragDropMode(QAbstractItemView::DragDrop);
  75     setDropIndicatorShown(false);
  76     setRootIsDecorated(false);
  77     setItemsExpandable(false);
  78     setEditTriggers(QAbstractItemView::NoEditTriggers);
  79
  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                        qRound(settings->fontSize()),
  88                        settings->fontWeight(),
  89                        settings->italicFont());
  90         m_font.setPointSizeF(settings->fontSize());
  91     }
  92
  93     connect(this, SIGNAL(viewportEntered()),
  94             m_container->m_dolphinViewController, SLOT(emitViewportEntered()));
  95     connect(this, SIGNAL(entered(const QModelIndex&)),
  96             this, SLOT(slotEntered(const QModelIndex&)));
  97
  98     const DolphinView* dolphinView = m_container->m_dolphinViewController->view();
  99     connect(dolphinView, SIGNAL(showPreviewChanged()),
 100             this, SLOT(slotShowPreviewChanged()));
 101
 102     m_dirLister = new DolphinDirLister();
 103     m_dirLister->setAutoUpdate(true);
 104     m_dirLister->setMainWindow(window());
 105     m_dirLister->setDelayedMimeTypes(true);
 106     const bool showHiddenFiles = m_container->m_dolphinViewController->view()->showHiddenFiles();
 107     m_dirLister->setShowingDotFiles(showHiddenFiles);
 108
 109     m_dolphinModel = new DolphinModel(this);
 110     m_dolphinModel->setDirLister(m_dirLister);
 111     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 112
 113     m_proxyModel = new DolphinSortFilterProxyModel(this);
 114     m_proxyModel->setSourceModel(m_dolphinModel);
 115     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 116
 117     m_proxyModel->setSorting(dolphinView->sorting());
 118     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 119     m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 120
 121     setModel(m_proxyModel);
 122
 123     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 124             this, SLOT(updateFont()));
 125
 126     const ViewModeController* viewModeController = m_container->m_viewModeController;
 127     connect(viewModeController, SIGNAL(zoomLevelChanged(int)),
 128             this, SLOT(setZoomLevel(int)));
 129     const QString nameFilter = viewModeController->nameFilter();
 130     if (!nameFilter.isEmpty()) {
 131         m_proxyModel->setFilterFixedString(nameFilter);
 132     }
 133
 134     updateDecorationSize(dolphinView->showPreview());
 135     updateBackground();
 136
 137     DolphinViewController* dolphinViewController = m_container->m_dolphinViewController;
 138     m_extensionsFactory = new ViewExtensionsFactory(this, dolphinViewController, viewModeController);
 139     m_extensionsFactory->fileItemDelegate()->setMinimizedNameColumn(true);
 140
 141     m_dirLister->openUrl(url, KDirLister::NoFlags);
 142 }
 143
 144 DolphinColumnView::~DolphinColumnView()
 145 {
 146     delete m_proxyModel;
 147     m_proxyModel = 0;
 148     delete m_dolphinModel;
 149     m_dolphinModel = 0;
 150     m_dirLister = 0; // deleted by m_dolphinModel
 151 }
 152
 153 void DolphinColumnView::setActive(bool active)
 154 {
 155     if (m_active != active) {
 156         m_active = active;
 157
 158         if (active) {
 159             activate();
 160         } else {
 161             deactivate();
 162         }
 163     }
 164 }
 165
 166 void DolphinColumnView::updateBackground()
 167 {
 168     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 169     // cleaning up the cut-indication of DolphinColumnView with the code from
 170     // DolphinView a common helper-class should be available which can be shared
 171     // by all view implementations -> no hardcoded value anymore
 172     const QPalette::ColorRole role = viewport()->backgroundRole();
 173     QColor color = viewport()->palette().color(role);
 174     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 175
 176     QPalette palette = viewport()->palette();
 177     palette.setColor(role, color);
 178     viewport()->setPalette(palette);
 179
 180     update();
 181 }
 182
 183 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 184 {
 185     KFileItem item;
 186     const QModelIndex index = indexAt(pos);
 187     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 188         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 189         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 190     }
 191     return item;
 192 }
 193
 194 void DolphinColumnView::setSelectionModel(QItemSelectionModel* model)
 195 {
 196     // If a change of the selection is done although the view is not active
 197     // (e. g. by the selection markers), the column must be activated. This
 198     // is done by listening to the current selectionChanged() signal.
 199     if (selectionModel() != 0) {
 200         disconnect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 201                    this, SLOT(requestActivation()));
 202     }
 203
 204     DolphinTreeView::setSelectionModel(model);
 205
 206     connect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 207             this, SLOT(requestActivation()));
 208 }
 209
 210 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 211 {
 212     QStyleOptionViewItem viewOptions = DolphinTreeView::viewOptions();
 213     viewOptions.font = m_font;
 214     viewOptions.fontMetrics = QFontMetrics(m_font);
 215     viewOptions.decorationSize = m_decorationSize;
 216     viewOptions.showDecorationSelected = true;
 217     return viewOptions;
 218 }
 219
 220 bool DolphinColumnView::event(QEvent* event)
 221 {
 222     if (event->type() == QEvent::Polish) {
 223         // Hide all columns except of the 'Name' column
 224         for (int i = DolphinModel::Name + 1; i < DolphinModel::ExtraColumnCount; ++i) {
 225             hideColumn(i);
 226         }
 227         header()->hide();
 228     }
 229
 230     return DolphinTreeView::event(event);
 231 }
 232
 233 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 234 {
 235     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_dolphinViewController);
 236     DolphinTreeView::startDrag(supportedActions);
 237 }
 238
 239 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 240 {
 241     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 242         event->acceptProposedAction();
 243         requestActivation();
 244     }
 245     DolphinTreeView::dragEnterEvent(event);
 246 }
 247
 248 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 249 {
 250     DolphinTreeView::dragMoveEvent(event);
 251
 252     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 253         // accept url drops, independently from the destination item
 254         event->acceptProposedAction();
 255     }
 256 }
 257
 258 void DolphinColumnView::dropEvent(QDropEvent* event)
 259 {
 260     const QModelIndex index = indexAt(event->pos());
 261     m_container->m_dolphinViewController->setItemView(this);
 262     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 263     const KFileItem item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 264     m_container->m_dolphinViewController->indicateDroppedUrls(item, url(), event);
 265     DolphinTreeView::dropEvent(event);
 266 }
 267
 268 void DolphinColumnView::paintEvent(QPaintEvent* event)
 269 {
 270     if (!m_childUrl.isEmpty()) {
 271         // Indicate the shown URL of the next column by highlighting the shown folder item
 272         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 273         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 274         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 275             QPainter painter(viewport());
 276
 277             QStyleOptionViewItemV4 option;
 278             option.initFrom(this);
 279             option.rect = visualRect(proxyIndex);
 280             option.state = QStyle::State_Enabled | QStyle::State_HasFocus;
 281             option.viewItemPosition = QStyleOptionViewItemV4::OnlyOne;
 282             style()->drawPrimitive(QStyle::PE_FrameFocusRect, &option, &painter, this);
 283         }
 284     }
 285
 286     DolphinTreeView::paintEvent(event);
 287 }
 288
 289 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 290 {
 291     requestActivation();
 292     if (!indexAt(event->pos()).isValid() && (QApplication::mouseButtons() & Qt::MidButton)) {
 293         m_container->m_dolphinViewController->replaceUrlByClipboard();
 294     }
 295
 296     DolphinTreeView::mousePressEvent(event);
 297 }
 298
 299 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 300 {
 301     DolphinTreeView::keyPressEvent(event);
 302
 303     DolphinViewController* controller = m_container->m_dolphinViewController;
 304     controller->handleKeyPressEvent(event);
 305     switch (event->key()) {
 306     case Qt::Key_Right: {
 307         // Special key handling for the column: A Key_Right should
 308         // open a new column for the currently selected folder.
 309         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(currentIndex());
 310         const KFileItem item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 311         if (!item.isNull() && item.isDir()) {
 312             controller->emitItemTriggered(item);
 313         }
 314         break;
 315     }
 316
 317     case Qt::Key_Escape:
 318         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(),
 319                                           QItemSelectionModel::Current |
 320                                           QItemSelectionModel::Clear);
 321         break;
 322
 323     default:
 324         break;
 325     }
 326 }
 327
 328 void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
 329 {
 330     requestActivation();
 331     DolphinTreeView::contextMenuEvent(event);
 332     m_container->m_dolphinViewController->triggerContextMenuRequest(event->pos());
 333 }
 334
 335 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 336 {
 337     const int step = m_decorationSize.height();
 338     verticalScrollBar()->setSingleStep(step);
 339     DolphinTreeView::wheelEvent(event);
 340 }
 341
 342 void DolphinColumnView::leaveEvent(QEvent* event)
 343 {
 344     DolphinTreeView::leaveEvent(event);
 345     // if the mouse is above an item and moved very fast outside the widget,
 346     // no viewportEntered() signal might be emitted although the mouse has been moved
 347     // above the viewport
 348     m_container->m_dolphinViewController->emitViewportEntered();
 349 }
 350
 351 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 352 {
 353     DolphinTreeView::currentChanged(current, previous);
 354     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 355 }
 356
 357 QRect DolphinColumnView::visualRect(const QModelIndex& index) const
 358 {
 359     QRect rect = DolphinTreeView::visualRect(index);
 360
 361     const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 362     const KFileItem item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 363     if (!item.isNull()) {
 364         const int width = DolphinFileItemDelegate::nameColumnWidth(item.text(), viewOptions());
 365         rect.setWidth(width);
 366     }
 367
 368     return rect;
 369 }
 370
 371 bool DolphinColumnView::acceptsDrop(const QModelIndex& index) const
 372 {
 373     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 374         // Accept drops above directories
 375         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 376         const KFileItem item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 377         return !item.isNull() && item.isDir();
 378     }
 379
 380     return false;
 381 }
 382
 383 void DolphinColumnView::setZoomLevel(int level)
 384 {
 385     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 386     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 387
 388     const bool showPreview = m_container->m_dolphinViewController->view()->showPreview();
 389     if (showPreview) {
 390         settings->setPreviewSize(size);
 391     } else {
 392         settings->setIconSize(size);
 393     }
 394
 395     updateDecorationSize(showPreview);
 396 }
 397
 398 void DolphinColumnView::slotEntered(const QModelIndex& index)
 399 {
 400     m_container->m_dolphinViewController->setItemView(this);
 401     m_container->m_dolphinViewController->emitItemEntered(index);
 402 }
 403
 404 void DolphinColumnView::requestActivation()
 405 {
 406     m_container->m_dolphinViewController->requestActivation();
 407     if (!m_active) {
 408         m_container->requestActivation(this);
 409         selectionModel()->clear();
 410     }
 411 }
 412
 413 void DolphinColumnView::updateFont()
 414 {
 415     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 416     Q_ASSERT(settings != 0);
 417
 418     if (settings->useSystemFont()) {
 419         m_font = KGlobalSettings::generalFont();
 420     }
 421 }
 422
 423 void DolphinColumnView::slotShowPreviewChanged()
 424 {
 425     const DolphinView* view = m_container->m_dolphinViewController->view();
 426     updateDecorationSize(view->showPreview());
 427 }
 428
 429 void DolphinColumnView::activate()
 430 {
 431     setFocus(Qt::OtherFocusReason);
 432
 433     if (KGlobalSettings::singleClick()) {
 434         connect(this, SIGNAL(clicked(const QModelIndex&)),
 435                 m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 436     } else {
 437         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 438                 m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 439     }
 440
 441     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 442         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 443     }
 444
 445     updateBackground();
 446 }
 447
 448 void DolphinColumnView::deactivate()
 449 {
 450     clearFocus();
 451     if (KGlobalSettings::singleClick()) {
 452         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 453                    m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 454     } else {
 455         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 456                    m_container->m_dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 457     }
 458
 459     // It is important to disconnect the connection to requestActivation() temporary, otherwise the internal
 460     // clearing of the selection would result in activating the column again.
 461     disconnect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 462                this, SLOT(requestActivation()));
 463     const QModelIndex current = selectionModel()->currentIndex();
 464     selectionModel()->clear();
 465     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 466     connect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
 467             this, SLOT(requestActivation()));
 468
 469     updateBackground();
 470 }
 471
 472 void DolphinColumnView::updateDecorationSize(bool showPreview)
 473 {
 474     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 475     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 476     const QSize size(iconSize, iconSize);
 477     setIconSize(size);
 478
 479     m_decorationSize = size;
 480
 481     doItemsLayout();
 482 }
 483
 484 #include "dolphincolumnview.moc"