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 "selectionmanager.h"
  32
  33 #include <kcolorscheme.h>
  34 #include <kdirlister.h>
  35 #include <kfileitem.h>
  36 #include <kio/previewjob.h>
  37 #include <kiconeffect.h>
  38 #include <kjob.h>
  39 #include <kmimetyperesolver.h>
  40 #include <konqmimedata.h>
  41
  42 #include "iconmanager.h"
  43
  44 #include <QApplication>
  45 #include <QClipboard>
  46 #include <QPainter>
  47 #include <QPoint>
  48
  49 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  50                                          DolphinColumnView* columnView,
  51                                          const KUrl& url) :
  52     QListView(parent),
  53     m_active(true),
  54     m_view(columnView),
  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     viewport()->setAttribute(Qt::WA_Hover);
  67     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  68     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  69     setSelectionBehavior(SelectItems);
  70     setSelectionMode(QAbstractItemView::ExtendedSelection);
  71     setDragDropMode(QAbstractItemView::DragDrop);
  72     setDropIndicatorShown(false);
  73     setSelectionRectVisible(true);
  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     const bool useSelManager = KGlobalSettings::singleClick() &&
 125                                DolphinSettings::instance().generalSettings()->showSelectionToggle();
 126     if (useSelManager) {
 127         SelectionManager* selManager = new SelectionManager(this);
 128         connect(selManager, SIGNAL(selectionChanged()),
 129                 this, SLOT(requestActivation()));
 130         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 131                 selManager, SLOT(reset()));
 132     }
 133
 134     new KMimeTypeResolver(this, m_dolphinModel);
 135     m_iconManager = new IconManager(this, m_proxyModel);
 136     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 137
 138     m_dirLister->openUrl(url, KDirLister::NoFlags);
 139
 140     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 141             this, SLOT(updateFont()));
 142 }
 143
 144 DolphinColumnWidget::~DolphinColumnWidget()
 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 DolphinColumnWidget::setDecorationSize(const QSize& size)
 154 {
 155     setIconSize(size);
 156     m_decorationSize = size;
 157     doItemsLayout();
 158     if (m_iconManager != 0) {
 159         m_iconManager->updatePreviews();
 160     }
 161 }
 162
 163 void DolphinColumnWidget::setActive(bool active)
 164 {
 165     if (m_active == active) {
 166         return;
 167     }
 168
 169     m_active = active;
 170
 171     if (active) {
 172         activate();
 173     } else {
 174         deactivate();
 175     }
 176 }
 177
 178 void DolphinColumnWidget::reload()
 179 {
 180     m_dirLister->stop();
 181     m_dirLister->openUrl(m_url, KDirLister::Reload);
 182 }
 183
 184 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 185 {
 186     m_proxyModel->setSorting(sorting);
 187 }
 188
 189 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 190 {
 191     m_proxyModel->setSortOrder(order);
 192 }
 193
 194 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 195 {
 196     if (show != m_dirLister->showingDotFiles()) {
 197         m_dirLister->setShowingDotFiles(show);
 198         m_dirLister->stop();
 199         m_dirLister->openUrl(m_url, KDirLister::Reload);
 200     }
 201 }
 202
 203 void DolphinColumnWidget::setShowPreview(bool show)
 204 {
 205     m_iconManager->setShowPreview(show);
 206
 207     m_dirLister->stop();
 208     m_dirLister->openUrl(m_url, KDirLister::Reload);
 209 }
 210
 211 void DolphinColumnWidget::updateBackground()
 212 {
 213     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 214     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 215     // DolphinView a common helper-class should be available which can be shared
 216     // by all view implementations -> no hardcoded value anymore
 217     const QPalette::ColorRole role = viewport()->backgroundRole();
 218     QColor color = viewport()->palette().color(role);
 219     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 220
 221     QPalette palette = viewport()->palette();
 222     palette.setColor(role, color);
 223     viewport()->setPalette(palette);
 224
 225     update();
 226 }
 227
 228 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 229 {
 230     m_proxyModel->setFilterRegExp(nameFilter);
 231 }
 232
 233
 234 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 235 {
 236     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 237     viewOptions.font = m_font;
 238     viewOptions.decorationSize = m_decorationSize;
 239     viewOptions.showDecorationSelected = true;
 240     return viewOptions;
 241 }
 242
 243 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 244 {
 245     DragAndDropHelper::startDrag(this, supportedActions);
 246 }
 247
 248 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 249 {
 250     if (event->mimeData()->hasUrls()) {
 251         event->acceptProposedAction();
 252     }
 253 }
 254
 255 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 256 {
 257     QListView::dragLeaveEvent(event);
 258     setDirtyRegion(m_dropRect);
 259 }
 260
 261 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 262 {
 263     QListView::dragMoveEvent(event);
 264
 265     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 266     const QModelIndex index = indexAt(event->pos());
 267     setDirtyRegion(m_dropRect);
 268
 269     m_dropRect.setSize(QSize()); // set as invalid
 270     if (index.isValid()) {
 271         m_view->m_controller->setItemView(this);
 272         const KFileItem item = m_view->m_controller->itemForIndex(index);
 273         if (!item.isNull() && item.isDir()) {
 274             m_dropRect = visualRect(index);
 275         }
 276     }
 277     setDirtyRegion(m_dropRect);
 278
 279     if (event->mimeData()->hasUrls()) {
 280         // accept url drops, independently from the destination item
 281         event->acceptProposedAction();
 282     }
 283 }
 284
 285 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 286 {
 287     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 288     if (!urls.isEmpty()) {
 289         const QModelIndex index = indexAt(event->pos());
 290         m_view->m_controller->setItemView(this);
 291         const KFileItem item = m_view->m_controller->itemForIndex(index);
 292         m_view->m_controller->indicateDroppedUrls(urls,
 293                                                   url(),
 294                                                   item);
 295         event->acceptProposedAction();
 296     }
 297     QListView::dropEvent(event);
 298 }
 299
 300 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 301 {
 302     if (!m_childUrl.isEmpty()) {
 303         // indicate the shown URL of the next column by highlighting the shown folder item
 304         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 305         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 306         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 307             const QRect itemRect = visualRect(proxyIndex);
 308             QPainter painter(viewport());
 309             painter.save();
 310
 311             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 312             color.setAlpha(32);
 313             painter.setPen(Qt::NoPen);
 314             painter.setBrush(color);
 315             painter.drawRect(itemRect);
 316
 317             painter.restore();
 318         }
 319     }
 320
 321     QListView::paintEvent(event);
 322 }
 323
 324 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 325 {
 326     requestActivation();
 327     QListView::mousePressEvent(event);
 328 }
 329
 330 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 331 {
 332     QListView::keyPressEvent(event);
 333     requestActivation();
 334     m_view->m_controller->handleKeyPressEvent(event);
 335 }
 336
 337 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 338 {
 339     if (!m_active) {
 340         m_view->requestActivation(this);
 341         Q_ASSERT(m_view->m_controller->itemView() == this);
 342         m_view->m_controller->triggerUrlChangeRequest(m_url);
 343     }
 344
 345     QListView::contextMenuEvent(event);
 346
 347     const QModelIndex index = indexAt(event->pos());
 348     if (index.isValid() || m_active) {
 349         // Only open a context menu above an item or if the mouse is above
 350         // the active column.
 351         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 352         Q_ASSERT(m_view->m_controller->itemView() == this);
 353         m_view->m_controller->triggerContextMenuRequest(pos);
 354     }
 355 }
 356
 357 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 358 {
 359     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 360     if (event->modifiers() & Qt::ControlModifier) {
 361         event->ignore();
 362         return;
 363     }
 364     QListView::wheelEvent(event);
 365 }
 366
 367 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 368 {
 369     QListView::selectionChanged(selected, deselected);
 370
 371     QItemSelectionModel* selModel = m_view->selectionModel();
 372     selModel->select(selected, QItemSelectionModel::Select);
 373     selModel->select(deselected, QItemSelectionModel::Deselect);
 374 }
 375
 376 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 377 {
 378     m_view->m_controller->setItemView(this);
 379     m_view->m_controller->emitItemEntered(index);
 380 }
 381
 382 void DolphinColumnWidget::requestActivation()
 383 {
 384     m_view->m_controller->setItemView(this);
 385     m_view->m_controller->requestActivation();
 386     if (!m_active) {
 387         m_view->requestActivation(this);
 388         m_view->m_controller->triggerUrlChangeRequest(m_url);
 389         selectionModel()->clear();
 390     }
 391 }
 392
 393 void DolphinColumnWidget::updateFont()
 394 {
 395     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 396     Q_ASSERT(settings != 0);
 397
 398     if (settings->useSystemFont()) {
 399         m_font = KGlobalSettings::generalFont();
 400     }
 401 }
 402
 403 void DolphinColumnWidget::activate()
 404 {
 405     setFocus(Qt::OtherFocusReason);
 406
 407     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 408     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 409     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 410     if (KGlobalSettings::singleClick()) {
 411         connect(this, SIGNAL(clicked(const QModelIndex&)),
 412                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 413     } else {
 414         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 415                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 416     }
 417
 418     if (selectionModel() && selectionModel()->currentIndex().isValid())
 419         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 420
 421     updateBackground();
 422 }
 423
 424 void DolphinColumnWidget::deactivate()
 425 {
 426     clearFocus();
 427
 428     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 429     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 430     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 431     if (KGlobalSettings::singleClick()) {
 432         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 433                    this, SLOT(triggerItem(const QModelIndex&)));
 434     } else {
 435         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 436                    this, SLOT(triggerItem(const QModelIndex&)));
 437     }
 438
 439     const QModelIndex current = selectionModel()->currentIndex();
 440     selectionModel()->clear();
 441     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 442     updateBackground();
 443 }
 444
 445 #include "dolphincolumnwidget.moc"