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 "viewextensionsfactory.h"
  35 #include "zoomlevelinfo.h"
  36
  37 #include <kcolorscheme.h>
  38 #include <kdirlister.h>
  39 #include <kfileitem.h>
  40 #include <kio/previewjob.h>
  41 #include <kiconeffect.h>
  42 #include <kjob.h>
  43 #include <konqmimedata.h>
  44
  45 #include <QApplication>
  46 #include <QClipboard>
  47 #include <QPainter>
  48 #include <QPoint>
  49 #include <QScrollBar>
  50
  51 DolphinColumnView::DolphinColumnView(QWidget* parent,
  52                                      DolphinColumnViewContainer* container,
  53                                      const KUrl& url) :
  54     QListView(parent),
  55     m_active(false),
  56     m_container(container),
  57     m_extensionsFactory(0),
  58     m_url(url),
  59     m_childUrl(),
  60     m_font(),
  61     m_decorationSize(),
  62     m_dirLister(0),
  63     m_dolphinModel(0),
  64     m_proxyModel(0),
  65     m_dropRect()
  66 {
  67     setMouseTracking(true);
  68     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  69     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  70     setSelectionBehavior(SelectItems);
  71     setSelectionMode(QAbstractItemView::ExtendedSelection);
  72     setDragDropMode(QAbstractItemView::DragDrop);
  73     setDropIndicatorShown(false);
  74     setSelectionRectVisible(true);
  75     setEditTriggers(QAbstractItemView::NoEditTriggers);
  76
  77     setVerticalScrollMode(QListView::ScrollPerPixel);
  78     setHorizontalScrollMode(QListView::ScrollPerPixel);
  79
  80     // apply the column mode settings to the widget
  81     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  82     Q_ASSERT(settings != 0);
  83
  84     if (settings->useSystemFont()) {
  85         m_font = KGlobalSettings::generalFont();
  86     } else {
  87         m_font = QFont(settings->fontFamily(),
  88                        settings->fontSize(),
  89                        settings->fontWeight(),
  90                        settings->italicFont());
  91     }
  92
  93     activate();
  94
  95     connect(this, SIGNAL(viewportEntered()),
  96             m_container->m_controller, SLOT(emitViewportEntered()));
  97     connect(this, SIGNAL(entered(const QModelIndex&)),
  98             this, SLOT(slotEntered(const QModelIndex&)));
  99
 100     const DolphinView* dolphinView = m_container->m_controller->dolphinView();
 101     connect(dolphinView, SIGNAL(showPreviewChanged()),
 102             this, SLOT(slotShowPreviewChanged()));
 103
 104     m_dirLister = new DolphinDirLister();
 105     m_dirLister->setAutoUpdate(true);
 106     m_dirLister->setMainWindow(window());
 107     m_dirLister->setDelayedMimeTypes(true);
 108     const bool showHiddenFiles = m_container->m_controller->dolphinView()->showHiddenFiles();
 109     m_dirLister->setShowingDotFiles(showHiddenFiles);
 110
 111     m_dolphinModel = new DolphinModel(this);
 112     m_dolphinModel->setDirLister(m_dirLister);
 113     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 114
 115     m_proxyModel = new DolphinSortFilterProxyModel(this);
 116     m_proxyModel->setSourceModel(m_dolphinModel);
 117     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 118
 119     m_proxyModel->setSorting(dolphinView->sorting());
 120     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 121     m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 122
 123     setModel(m_proxyModel);
 124
 125     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 126             this, SLOT(updateFont()));
 127
 128     DolphinController* controller = m_container->m_controller;
 129     connect(controller, SIGNAL(zoomLevelChanged(int)),
 130             this, SLOT(setZoomLevel(int)));
 131
 132     const QString nameFilter = controller->nameFilter();
 133     if (!nameFilter.isEmpty()) {
 134         m_proxyModel->setFilterRegExp(nameFilter);
 135     }
 136
 137     updateDecorationSize(dolphinView->showPreview());
 138     m_extensionsFactory = new ViewExtensionsFactory(this, controller);
 139 }
 140
 141 DolphinColumnView::~DolphinColumnView()
 142 {
 143     delete m_proxyModel;
 144     m_proxyModel = 0;
 145     delete m_dolphinModel;
 146     m_dolphinModel = 0;
 147     m_dirLister = 0; // deleted by m_dolphinModel
 148 }
 149
 150 void DolphinColumnView::setActive(bool active)
 151 {
 152     if (active && (m_container->focusProxy() != this)) {
 153         m_container->setFocusProxy(this);
 154     }
 155
 156     if (m_active != active) {
 157         m_active = active;
 158
 159         if (active) {
 160             activate();
 161         } else {
 162             deactivate();
 163         }
 164     }
 165 }
 166
 167 void DolphinColumnView::updateBackground()
 168 {
 169     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 170     // cleaning up the cut-indication of DolphinColumnView with the code from
 171     // DolphinView a common helper-class should be available which can be shared
 172     // by all view implementations -> no hardcoded value anymore
 173     const QPalette::ColorRole role = viewport()->backgroundRole();
 174     QColor color = viewport()->palette().color(role);
 175     color.setAlpha((m_active && m_container->m_active) ? 255 : 150);
 176
 177     QPalette palette = viewport()->palette();
 178     palette.setColor(role, color);
 179     viewport()->setPalette(palette);
 180
 181     update();
 182 }
 183
 184 KFileItem DolphinColumnView::itemAt(const QPoint& pos) const
 185 {
 186     KFileItem item;
 187     const QModelIndex index = indexAt(pos);
 188     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 189         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 190         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 191     }
 192     return item;
 193 }
 194
 195 QStyleOptionViewItem DolphinColumnView::viewOptions() const
 196 {
 197     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 198     viewOptions.font = m_font;
 199     viewOptions.decorationSize = m_decorationSize;
 200     viewOptions.showDecorationSelected = true;
 201     return viewOptions;
 202 }
 203
 204 void DolphinColumnView::startDrag(Qt::DropActions supportedActions)
 205 {
 206     DragAndDropHelper::instance().startDrag(this, supportedActions, m_container->m_controller);
 207 }
 208
 209 void DolphinColumnView::dragEnterEvent(QDragEnterEvent* event)
 210 {
 211     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 212         event->acceptProposedAction();
 213         requestActivation();
 214     }
 215 }
 216
 217 void DolphinColumnView::dragLeaveEvent(QDragLeaveEvent* event)
 218 {
 219     QListView::dragLeaveEvent(event);
 220     setDirtyRegion(m_dropRect);
 221 }
 222
 223 void DolphinColumnView::dragMoveEvent(QDragMoveEvent* event)
 224 {
 225     QListView::dragMoveEvent(event);
 226
 227     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 228     const QModelIndex index = indexAt(event->pos());
 229     setDirtyRegion(m_dropRect);
 230
 231     m_dropRect.setSize(QSize()); // set as invalid
 232     if (index.isValid()) {
 233         m_container->m_controller->setItemView(this);
 234         const KFileItem item = m_container->m_controller->itemForIndex(index);
 235         if (!item.isNull() && item.isDir()) {
 236             m_dropRect = visualRect(index);
 237         }
 238     }
 239     setDirtyRegion(m_dropRect);
 240
 241     if (DragAndDropHelper::instance().isMimeDataSupported(event->mimeData())) {
 242         // accept url drops, independently from the destination item
 243         event->acceptProposedAction();
 244     }
 245 }
 246
 247 void DolphinColumnView::dropEvent(QDropEvent* event)
 248 {
 249     const QModelIndex index = indexAt(event->pos());
 250     m_container->m_controller->setItemView(this);
 251     const KFileItem item = m_container->m_controller->itemForIndex(index);
 252     m_container->m_controller->indicateDroppedUrls(item, url(), event);
 253     QListView::dropEvent(event);
 254 }
 255
 256 void DolphinColumnView::paintEvent(QPaintEvent* event)
 257 {
 258     if (!m_childUrl.isEmpty()) {
 259         // indicate the shown URL of the next column by highlighting the shown folder item
 260         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 261         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 262         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 263             const QRect itemRect = visualRect(proxyIndex);
 264             QPainter painter(viewport());
 265             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 266             color.setAlpha(32);
 267             painter.setPen(Qt::NoPen);
 268             painter.setBrush(color);
 269             painter.drawRect(itemRect);
 270         }
 271     }
 272
 273     QListView::paintEvent(event);
 274 }
 275
 276 void DolphinColumnView::mousePressEvent(QMouseEvent* event)
 277 {
 278     requestActivation();
 279     if (!indexAt(event->pos()).isValid()) {
 280         if (QApplication::mouseButtons() & Qt::MidButton) {
 281             m_container->m_controller->replaceUrlByClipboard();
 282         }
 283     } else if (event->button() == Qt::LeftButton) {
 284         // TODO: see comment in DolphinIconsView::mousePressEvent()
 285         setState(QAbstractItemView::DraggingState);
 286     }
 287     QListView::mousePressEvent(event);
 288 }
 289
 290 void DolphinColumnView::keyPressEvent(QKeyEvent* event)
 291 {
 292     QListView::keyPressEvent(event);
 293     requestActivation();
 294
 295     DolphinController* controller = m_container->m_controller;
 296     controller->handleKeyPressEvent(event);
 297     switch (event->key()) {
 298     case Qt::Key_Right: {
 299         // Special key handling for the column: A Key_Right should
 300         // open a new column for the currently selected folder.
 301         const QModelIndex index = currentIndex();
 302         const KFileItem item = controller->itemForIndex(index);
 303         if (!item.isNull() && item.isDir()) {
 304             controller->emitItemTriggered(item);
 305         }
 306         break;
 307     }
 308
 309     case Qt::Key_Escape:
 310         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(),
 311                                           QItemSelectionModel::Current |
 312                                           QItemSelectionModel::Clear);
 313         break;
 314
 315     default:
 316         break;
 317     }
 318 }
 319
 320 void DolphinColumnView::contextMenuEvent(QContextMenuEvent* event)
 321 {
 322     if (!m_active) {
 323         m_container->requestActivation(this);
 324         Q_ASSERT(m_container->m_controller->itemView() == this);
 325         m_container->m_controller->triggerUrlChangeRequest(m_url);
 326     }
 327     Q_ASSERT(m_active);
 328
 329     QListView::contextMenuEvent(event);
 330     m_container->m_controller->triggerContextMenuRequest(event->pos());
 331 }
 332
 333 void DolphinColumnView::wheelEvent(QWheelEvent* event)
 334 {
 335     const int height = m_decorationSize.height();
 336     const int step = (height >= KIconLoader::SizeHuge) ? height / 10 : (KIconLoader::SizeHuge - height) / 2;
 337     verticalScrollBar()->setSingleStep(step);
 338
 339     QListView::wheelEvent(event);
 340 }
 341
 342 void DolphinColumnView::leaveEvent(QEvent* event)
 343 {
 344     QListView::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_controller->emitViewportEntered();
 349 }
 350
 351 void DolphinColumnView::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 352 {
 353     QListView::selectionChanged(selected, deselected);
 354
 355     //QItemSelectionModel* selModel = m_container->selectionModel();
 356     //selModel->select(selected, QItemSelectionModel::Select);
 357     //selModel->select(deselected, QItemSelectionModel::Deselect);
 358 }
 359
 360 void DolphinColumnView::currentChanged(const QModelIndex& current, const QModelIndex& previous)
 361 {
 362     QListView::currentChanged(current, previous);
 363     m_extensionsFactory->handleCurrentIndexChange(current, previous);
 364 }
 365
 366 void DolphinColumnView::setZoomLevel(int level)
 367 {
 368     const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
 369     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 370
 371     const bool showPreview = m_container->m_controller->dolphinView()->showPreview();
 372     if (showPreview) {
 373         settings->setPreviewSize(size);
 374     } else {
 375         settings->setIconSize(size);
 376     }
 377
 378     updateDecorationSize(showPreview);
 379 }
 380
 381 void DolphinColumnView::slotEntered(const QModelIndex& index)
 382 {
 383     m_container->m_controller->setItemView(this);
 384     m_container->m_controller->emitItemEntered(index);
 385 }
 386
 387 void DolphinColumnView::requestActivation()
 388 {
 389     m_container->m_controller->setItemView(this);
 390     m_container->m_controller->requestActivation();
 391     if (!m_active) {
 392         m_container->requestActivation(this);
 393         m_container->m_controller->triggerUrlChangeRequest(m_url);
 394         selectionModel()->clear();
 395     }
 396 }
 397
 398 void DolphinColumnView::updateFont()
 399 {
 400     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 401     Q_ASSERT(settings != 0);
 402
 403     if (settings->useSystemFont()) {
 404         m_font = KGlobalSettings::generalFont();
 405     }
 406 }
 407
 408 void DolphinColumnView::slotShowPreviewChanged()
 409 {
 410     const DolphinView* view = m_container->m_controller->dolphinView();
 411     updateDecorationSize(view->showPreview());
 412 }
 413
 414 void DolphinColumnView::activate()
 415 {
 416     setFocus(Qt::OtherFocusReason);
 417
 418     if (KGlobalSettings::singleClick()) {
 419         connect(this, SIGNAL(clicked(const QModelIndex&)),
 420                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 421     } else {
 422         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 423                 m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 424     }
 425
 426     if (selectionModel() && selectionModel()->currentIndex().isValid()) {
 427         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 428     }
 429
 430     updateBackground();
 431 }
 432
 433 void DolphinColumnView::deactivate()
 434 {
 435     clearFocus();
 436     if (KGlobalSettings::singleClick()) {
 437         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 438                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 439     } else {
 440         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 441                    m_container->m_controller, SLOT(triggerItem(const QModelIndex&)));
 442     }
 443
 444     const QModelIndex current = selectionModel()->currentIndex();
 445     selectionModel()->clear();
 446     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 447     updateBackground();
 448 }
 449
 450 void DolphinColumnView::updateDecorationSize(bool showPreview)
 451 {
 452     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 453     const int iconSize = showPreview ? settings->previewSize() : settings->iconSize();
 454     const QSize size(iconSize, iconSize);
 455     setIconSize(size);
 456
 457     m_decorationSize = size;
 458
 459     doItemsLayout();
 460 }
 461
 462 #include "dolphincolumnview.moc"