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_dragging(false),
  64     m_dropRect()
  65 {
  66     setMouseTracking(true);
  67     viewport()->setAttribute(Qt::WA_Hover);
  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
  76 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  77 //       check avoids a division by zero happening on versions before 4.3.1.
  78 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  79 //       ereslibre
  80 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  81     setVerticalScrollMode(QListView::ScrollPerPixel);
  82     setHorizontalScrollMode(QListView::ScrollPerPixel);
  83 #endif
  84
  85     // apply the column mode settings to the widget
  86     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  87     Q_ASSERT(settings != 0);
  88
  89     if (settings->useSystemFont()) {
  90         m_font = KGlobalSettings::generalFont();
  91     } else {
  92         m_font = QFont(settings->fontFamily(),
  93                        settings->fontSize(),
  94                        settings->fontWeight(),
  95                        settings->italicFont());
  96     }
  97
  98     const int iconSize = settings->iconSize();
  99     setDecorationSize(QSize(iconSize, iconSize));
 100
 101     KFileItemDelegate* delegate = new KFileItemDelegate(this);
 102     setItemDelegate(delegate);
 103
 104     activate();
 105
 106     connect(this, SIGNAL(viewportEntered()),
 107             m_view->m_controller, SLOT(emitViewportEntered()));
 108     connect(this, SIGNAL(entered(const QModelIndex&)),
 109             this, SLOT(slotEntered(const QModelIndex&)));
 110
 111     //m_dirLister = new DolphinDirLister(); TODO
 112     m_dirLister = new KDirLister();
 113     m_dirLister->setAutoUpdate(true);
 114     m_dirLister->setMainWindow(window());
 115     m_dirLister->setDelayedMimeTypes(true);
 116     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 117     m_dirLister->setShowingDotFiles(showHiddenFiles);
 118
 119     m_dolphinModel = new DolphinModel(this);
 120     m_dolphinModel->setDirLister(m_dirLister);
 121     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 122
 123     m_proxyModel = new DolphinSortFilterProxyModel(this);
 124     m_proxyModel->setSourceModel(m_dolphinModel);
 125     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 126     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 127     m_proxyModel->setSorting(dolphinView->sorting());
 128     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 129
 130     setModel(m_proxyModel);
 131     const bool useSelManager = KGlobalSettings::singleClick() &&
 132                                DolphinSettings::instance().generalSettings()->showSelectionToggle();
 133     if (useSelManager) {
 134         SelectionManager* selManager = new SelectionManager(this);
 135         connect(selManager, SIGNAL(selectionChanged()),
 136                 this, SLOT(requestActivation()));
 137         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 138                 selManager, SLOT(reset()));
 139     }
 140
 141     new KMimeTypeResolver(this, m_dolphinModel);
 142     m_iconManager = new IconManager(this, m_proxyModel);
 143     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 144
 145     m_dirLister->openUrl(url, KDirLister::NoFlags);
 146
 147     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 148             this, SLOT(updateFont()));
 149 }
 150
 151 DolphinColumnWidget::~DolphinColumnWidget()
 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 DolphinColumnWidget::setDecorationSize(const QSize& size)
 161 {
 162     setIconSize(size);
 163     m_decorationSize = size;
 164     doItemsLayout();
 165 }
 166
 167 void DolphinColumnWidget::setActive(bool active)
 168 {
 169     if (m_active == active) {
 170         return;
 171     }
 172
 173     m_active = active;
 174
 175     if (active) {
 176         activate();
 177     } else {
 178         deactivate();
 179     }
 180 }
 181
 182 void DolphinColumnWidget::reload()
 183 {
 184     m_dirLister->stop();
 185     m_dirLister->openUrl(m_url, KDirLister::Reload);
 186 }
 187
 188 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 189 {
 190     m_proxyModel->setSorting(sorting);
 191 }
 192
 193 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 194 {
 195     m_proxyModel->setSortOrder(order);
 196 }
 197
 198 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 199 {
 200     if (show != m_dirLister->showingDotFiles()) {
 201         m_dirLister->setShowingDotFiles(show);
 202         m_dirLister->stop();
 203         m_dirLister->openUrl(m_url, KDirLister::Reload);
 204     }
 205 }
 206
 207 void DolphinColumnWidget::setShowPreview(bool show)
 208 {
 209     m_iconManager->setShowPreview(show);
 210
 211     m_dirLister->stop();
 212     m_dirLister->openUrl(m_url, KDirLister::Reload);
 213 }
 214
 215 void DolphinColumnWidget::updateBackground()
 216 {
 217     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 218     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 219     // DolphinView a common helper-class should be available which can be shared
 220     // by all view implementations -> no hardcoded value anymore
 221     const QPalette::ColorRole role = viewport()->backgroundRole();
 222     QColor color = viewport()->palette().color(role);
 223     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 224
 225     QPalette palette = viewport()->palette();
 226     palette.setColor(role, color);
 227     viewport()->setPalette(palette);
 228
 229     update();
 230 }
 231
 232 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 233 {
 234     m_proxyModel->setFilterRegExp(nameFilter);
 235 }
 236
 237
 238 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 239 {
 240     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 241     viewOptions.font = m_font;
 242     viewOptions.decorationSize = m_decorationSize;
 243     viewOptions.showDecorationSelected = true;
 244     return viewOptions;
 245 }
 246
 247 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 248 {
 249     DragAndDropHelper::startDrag(this, supportedActions);
 250 }
 251
 252 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 253 {
 254     if (event->mimeData()->hasUrls()) {
 255         event->acceptProposedAction();
 256     }
 257
 258     m_dragging = true;
 259 }
 260
 261 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 262 {
 263     QListView::dragLeaveEvent(event);
 264
 265     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 266     m_dragging = false;
 267     setDirtyRegion(m_dropRect);
 268 }
 269
 270 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 271 {
 272     QListView::dragMoveEvent(event);
 273
 274     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 275     const QModelIndex index = indexAt(event->pos());
 276     setDirtyRegion(m_dropRect);
 277
 278     m_dropRect.setSize(QSize()); // set as invalid
 279     if (index.isValid()) {
 280         m_view->m_controller->setItemView(this);
 281         const KFileItem item = m_view->m_controller->itemForIndex(index);
 282         if (!item.isNull() && item.isDir()) {
 283             m_dropRect = visualRect(index);
 284         }
 285     }
 286     setDirtyRegion(m_dropRect);
 287
 288     if (event->mimeData()->hasUrls()) {
 289         // accept url drops, independently from the destination item
 290         event->acceptProposedAction();
 291     }
 292 }
 293
 294 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 295 {
 296     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 297     if (!urls.isEmpty()) {
 298         const QModelIndex index = indexAt(event->pos());
 299         m_view->m_controller->setItemView(this);
 300         const KFileItem item = m_view->m_controller->itemForIndex(index);
 301         m_view->m_controller->indicateDroppedUrls(urls,
 302                                                   url(),
 303                                                   item);
 304         event->acceptProposedAction();
 305     }
 306     QListView::dropEvent(event);
 307     m_dragging = false;
 308 }
 309
 310 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 311 {
 312     if (!m_childUrl.isEmpty()) {
 313         // indicate the shown URL of the next column by highlighting the shown folder item
 314         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 315         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 316         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 317             const QRect itemRect = visualRect(proxyIndex);
 318             QPainter painter(viewport());
 319             painter.save();
 320
 321             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 322             color.setAlpha(32);
 323             painter.setPen(Qt::NoPen);
 324             painter.setBrush(color);
 325             painter.drawRect(itemRect);
 326
 327             painter.restore();
 328         }
 329     }
 330
 331     QListView::paintEvent(event);
 332
 333     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 334     if (m_dragging) {
 335         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 336         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 337     }
 338 }
 339
 340 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 341 {
 342     requestActivation();
 343     QListView::mousePressEvent(event);
 344 }
 345
 346 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 347 {
 348     QListView::keyPressEvent(event);
 349     requestActivation();
 350     m_view->m_controller->handleKeyPressEvent(event);
 351 }
 352
 353 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 354 {
 355     if (!m_active) {
 356         m_view->requestActivation(this);
 357         Q_ASSERT(m_view->m_controller->itemView() == this);
 358         m_view->m_controller->triggerUrlChangeRequest(m_url);
 359     }
 360
 361     QListView::contextMenuEvent(event);
 362
 363     const QModelIndex index = indexAt(event->pos());
 364     if (index.isValid() || m_active) {
 365         // Only open a context menu above an item or if the mouse is above
 366         // the active column.
 367         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 368         Q_ASSERT(m_view->m_controller->itemView() == this);
 369         m_view->m_controller->triggerContextMenuRequest(pos);
 370     }
 371 }
 372
 373 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 374 {
 375     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 376     // (installing an event filter does not work, as the wheel event is handled first)
 377     if (event->modifiers() & Qt::ControlModifier) {
 378         event->ignore();
 379         return;
 380     }
 381     QListView::wheelEvent(event);
 382 }
 383
 384 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 385 {
 386     QListView::selectionChanged(selected, deselected);
 387
 388     QItemSelectionModel* selModel = m_view->selectionModel();
 389     selModel->select(selected, QItemSelectionModel::Select);
 390     selModel->select(deselected, QItemSelectionModel::Deselect);
 391 }
 392
 393 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 394 {
 395     m_view->m_controller->setItemView(this);
 396     m_view->m_controller->emitItemEntered(index);
 397 }
 398
 399 void DolphinColumnWidget::requestActivation()
 400 {
 401     m_view->m_controller->requestActivation();
 402     if (!m_active) {
 403         m_view->requestActivation(this);
 404         m_view->m_controller->triggerUrlChangeRequest(m_url);
 405         selectionModel()->clear();
 406     }
 407     Q_ASSERT(m_view->m_controller->itemView() == this);
 408 }
 409
 410 void DolphinColumnWidget::updateFont()
 411 {
 412     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 413     Q_ASSERT(settings != 0);
 414
 415     if (settings->useSystemFont()) {
 416         m_font = KGlobalSettings::generalFont();
 417     }
 418 }
 419
 420 void DolphinColumnWidget::activate()
 421 {
 422     setFocus(Qt::OtherFocusReason);
 423
 424     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 425     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 426     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 427     if (KGlobalSettings::singleClick()) {
 428         connect(this, SIGNAL(clicked(const QModelIndex&)),
 429                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 430     } else {
 431         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 432                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 433     }
 434
 435     if (selectionModel() && selectionModel()->currentIndex().isValid())
 436         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 437
 438     updateBackground();
 439 }
 440
 441 void DolphinColumnWidget::deactivate()
 442 {
 443     clearFocus();
 444
 445     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 446     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 447     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 448     if (KGlobalSettings::singleClick()) {
 449         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 450                    this, SLOT(triggerItem(const QModelIndex&)));
 451     } else {
 452         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 453                    this, SLOT(triggerItem(const QModelIndex&)));
 454     }
 455
 456     const QModelIndex current = selectionModel()->currentIndex();
 457     selectionModel()->clear();
 458     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 459     updateBackground();
 460 }
 461
 462 #include "dolphincolumnwidget.moc"