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
 145     m_extensionsFactory = new ViewExtensionsFactory(this, controller);
 146     updateDecorationSize(dolphinView->showPreview());
 147 }
 148
 149 DolphinColumnView::~DolphinColumnView()
 150 {
 151     delete m_proxyModel;
 152     m_proxyModel = 0;
 153     delete m_dolphinModel;
 154     m_dolphinModel = 0;
 155     m_dirLister = 0; // deleted by m_dolphinModel
 156 }
 157
 158 void DolphinColumnView::setActive(bool active)
 159 {
 160     if (active && (m_container->focusProxy() != this)) {
 161         m_container->setFocusProxy(this);
 162     }
 163
 164     if (m_active != active) {
 165         m_active = active;
 166
 167         if (active) {
 168             activate();
 169         } else {
 170             deactivate();
 171         }
 172     }
 173 }
 174
 175 void DolphinColumnView::updateBackground()
 176 {
 177     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 178     // cleaning up the cut-indication of DolphinColumnView with the code from
 179     // DolphinView a common helper-class should be available which can be shared
 180     // by all view implementations -> no hardcoded value anymore
 181     const QPalette::ColorRole role = viewport()->backgroundRole();
 182     QColor color = viewport()->palette().color(role);
 183     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 184
 185     QPalette palette = viewport()->palette();
 186     palette.setColor(role, color);
 187     viewport()->setPalette(palette);
 188
 189     update();
 190 }
 191
 192 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 193 {
 194     KFileItem item;
 195     const QModelIndex index = indexAt(pos);
 196     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 197         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 198         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 199     }
 200     return item;
 201 }
 202
 203 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 204 {
 205     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 206     viewOptions.font = m_font;
 207     viewOptions.decorationSize = m_decorationSize;
 208     viewOptions.showDecorationSelected = true;
 209     return viewOptions;
 210 }
 211
 212 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 213 {
 214     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_controller);
 215 }
 216
 217 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 218 {
 219     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 220         event->acceptProposedAction();
 221         requestActivation();
 222     }
 223 }
 224
 225 void DolphinColumnView::dragLeaveEvent(QDragLeaveEvent* event)
 226 {
 227     QListView::dragLeaveEvent(event);
 228     setDirtyRegion(m_dropRect);
 229 }
 230
 231 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 232 {
 233     QListView::dragMoveEvent(event);
 234
 235     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 236     const QModelIndex index = indexAt(event->pos());
 237     setDirtyRegion(m_dropRect);
 238
 239     m_dropRect.setSize(QSize()); // set as invalid
 240     if (index.isValid()) {
 241         m_container->m_controller->setItemView(this);
 242         const KFileItem item = m_container->m_controller->itemForIndex(index);
 243         if (!item.isNull() && item.isDir()) {
 244             m_dropRect = visualRect(index);
 245         }
 246     }
 247     setDirtyRegion(m_dropRect);
 248
 249     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 250         // accept url drops, independently from the destination item
 251         event->acceptProposedAction();
 252     }
 253 }
 254
 255 void DolphinColumnView::dropEvent(QDropEvent* event)
 256 {
 257     const QModelIndex index = indexAt(event->pos());
 258     m_container->m_controller->setItemView(this);
 259     const KFileItem item = m_container->m_controller->itemForIndex(index);
 260     m_container->m_controller->indicateDroppedUrls(item, url(), event);
 261     QListView::dropEvent(event);
 262 }
 263
 264 void DolphinColumnView::paintEvent(QPaintEvent* event)
 265 {
 266     if (!m_childUrl.isEmpty()) {
 267         // indicate the shown URL of the next column by highlighting the shown folder item
 268         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 269         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 270         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 271             const QRect itemRect = visualRect(proxyIndex);
 272             QPainter painter(viewport());
 273             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 274             color.setAlpha(32);
 275             painter.setPen(Qt::NoPen);
 276             painter.setBrush(color);
 277             painter.drawRect(itemRect);
 278         }
 279     }
 280
 281     QListView::paintEvent(event);
 282 }
 283
 284 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 285 {
 286     requestActivation();
 287     if (!indexAt(event->pos()).isValid()) {
 288         if (QApplication::mouseButtons() & Qt::MidButton) {
 289             m_container->m_controller->replaceUrlByClipboard();
 290         }
 291     } else if (event->button() == Qt::LeftButton) {
 292         // TODO: see comment in DolphinIconsView::mousePressEvent()
 293         setState(QAbstractItemView::DraggingState);
 294     }
 295     QListView::mousePressEvent(event);
 296 }
 297
 298 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 299 {
 300     QListView::keyPressEvent(event);
 301     requestActivation();
 302
 303     DolphinController* controller = m_container->m_controller;
 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 index = currentIndex();
 310         const KFileItem item = controller->itemForIndex(index);
 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     if (!m_active) {
 331         m_container->requestActivation(this);
 332         Q_ASSERT(m_container->m_controller->itemView() == this);
 333         m_container->m_controller->triggerUrlChangeRequest(m_url);
 334     }
 335     Q_ASSERT(m_active);
 336
 337     QListView::contextMenuEvent(event);
 338
 339     const QModelIndex index = indexAt(event->pos());
 340     if (!index.isValid()) {
 341         clearSelection();
 342     }
 343
 344     const QPoint pos = m_container->viewport()->mapFromGlobal(event->globalPos());
 345     Q_ASSERT(m_container->m_controller->itemView() == this);
 346     m_container->m_controller->triggerContextMenuRequest(pos);
 347 }
 348
 349 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 350 {
 351     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 352     if (event->modifiers() & Qt::ControlModifier) {
 353         event->ignore();
 354         return;
 355     }
 356
 357     const int height = m_decorationSize.height();
 358     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 359     verticalScrollBar()->setSingleStep(step);
 360
 361     QListView::wheelEvent(event);
 362 }
 363
 364 void DolphinColumnView::leaveEvent(QEvent* event)
 365 {
 366     QListView::leaveEvent(event);
 367     // if the mouse is above an item and moved very fast outside the widget,
 368     // no viewportEntered() signal might be emitted although the mouse has been moved
 369     // above the viewport
 370     m_container->m_controller->emitViewportEntered();
 371 }
 372
 373 void DolphinColumnView::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 374 {
 375     QListView::selectionChanged(selected, deselected);
 376
 377     //QItemSelectionModel* selModel = m_container->selectionModel();
 378     //selModel->select(selected, QItemSelectionModel::Select);
 379     //selModel->select(deselected, QItemSelectionModel::Deselect);
 380 }
 381
 382 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 383 {
 384     QListView::currentChanged(current, previous);
 385     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 386 }
 387
 388 void DolphinColumnView::setZoomLevel(int level)
 389 {
 390     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 391     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 392
 393     const bool showPreview = m_container->m_controller->dolphinView()->showPreview();
 394     if (showPreview) {
 395         settings->setPreviewSize(size);
 396     } else {
 397         settings->setIconSize(size);
 398     }
 399
 400     updateDecorationSize(showPreview);
 401 }
 402
 403 void DolphinColumnView::slotEntered(const QModelIndex& index)
 404 {
 405     m_container->m_controller->setItemView(this);
 406     m_container->m_controller->emitItemEntered(index);
 407 }
 408
 409 void DolphinColumnView::requestActivation()
 410 {
 411     m_container->m_controller->setItemView(this);
 412     m_container->m_controller->requestActivation();
 413     if (!m_active) {
 414         m_container->requestActivation(this);
 415         m_container->m_controller->triggerUrlChangeRequest(m_url);
 416         selectionModel()->clear();
 417     }
 418 }
 419
 420 void DolphinColumnView::updateFont()
 421 {
 422     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 423     Q_ASSERT(settings != 0);
 424
 425     if (settings->useSystemFont()) {
 426         m_font = KGlobalSettings::generalFont();
 427     }
 428 }
 429
 430 void DolphinColumnView::slotShowPreviewChanged()
 431 {
 432     const DolphinView* view = m_container->m_controller->dolphinView();
 433     updateDecorationSize(view->showPreview());
 434 }
 435
 436 void DolphinColumnView::activate()
 437 {
 438     setFocus(Qt::OtherFocusReason);
 439
 440     if (KGlobalSettings::singleClick()) {
 441         connect(this, SIGNAL(clicked(const QModelIndex&)),
 442                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 443     } else {
 444         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 445                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 446     }
 447
 448     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 449         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 450     }
 451
 452     updateBackground();
 453 }
 454
 455 void DolphinColumnView::deactivate()
 456 {
 457     clearFocus();
 458     if (KGlobalSettings::singleClick()) {
 459         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 460                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 461     } else {
 462         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 463                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 464     }
 465
 466     const QModelIndex current = selectionModel()->currentIndex();
 467     selectionModel()->clear();
 468     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 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"