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     m_font = QFont(settings->fontFamily(), settings->fontSize());
  90     m_font.setItalic(settings->italicFont());
  91     m_font.setBold(settings->boldFont());
  92
  93     const int iconSize = settings->iconSize();
  94     setDecorationSize(QSize(iconSize, iconSize));
  95
  96     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  97     setItemDelegate(delegate);
  98
  99     activate();
 100
 101     connect(this, SIGNAL(viewportEntered()),
 102             m_view->m_controller, SLOT(emitViewportEntered()));
 103     connect(this, SIGNAL(entered(const QModelIndex&)),
 104             this, SLOT(slotEntered(const QModelIndex&)));
 105
 106     //m_dirLister = new DolphinDirLister(); TODO
 107     m_dirLister = new KDirLister();
 108     m_dirLister->setAutoUpdate(true);
 109     m_dirLister->setMainWindow(topLevelWidget());
 110     m_dirLister->setDelayedMimeTypes(true);
 111     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 112     m_dirLister->setShowingDotFiles(showHiddenFiles);
 113
 114     m_dolphinModel = new DolphinModel(this);
 115     m_dolphinModel->setDirLister(m_dirLister);
 116     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 117
 118     m_proxyModel = new DolphinSortFilterProxyModel(this);
 119     m_proxyModel->setSourceModel(m_dolphinModel);
 120     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 121     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 122     m_proxyModel->setSorting(dolphinView->sorting());
 123     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 124
 125     setModel(m_proxyModel);
 126     const bool useSelManager = KGlobalSettings::singleClick() &&
 127                                DolphinSettings::instance().generalSettings()->showSelectionToggle();
 128     if (useSelManager) {
 129         SelectionManager* selManager = new SelectionManager(this);
 130         connect(selManager, SIGNAL(selectionChanged()),
 131                 this, SLOT(requestActivation()));
 132         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 133                 selManager, SLOT(reset()));
 134 }
 135     new KMimeTypeResolver(this, m_dolphinModel);
 136     m_iconManager = new IconManager(this, m_proxyModel);
 137     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 138
 139     m_dirLister->openUrl(url, KDirLister::NoFlags);
 140 }
 141
 142 DolphinColumnWidget::~DolphinColumnWidget()
 143 {
 144     delete m_proxyModel;
 145     m_proxyModel = 0;
 146     delete m_dolphinModel;
 147     m_dolphinModel = 0;
 148     m_dirLister = 0; // deleted by m_dolphinModel
 149 }
 150
 151 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 152 {
 153     setIconSize(size);
 154     m_decorationSize = size;
 155     doItemsLayout();
 156 }
 157
 158 void DolphinColumnWidget::setActive(bool active)
 159 {
 160     if (m_active == active) {
 161         return;
 162     }
 163
 164     m_active = active;
 165
 166     if (active) {
 167         activate();
 168     } else {
 169         deactivate();
 170     }
 171 }
 172
 173 void DolphinColumnWidget::reload()
 174 {
 175     m_dirLister->stop();
 176     m_dirLister->openUrl(m_url, KDirLister::Reload);
 177 }
 178
 179 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 180 {
 181     m_proxyModel->setSorting(sorting);
 182 }
 183
 184 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 185 {
 186     m_proxyModel->setSortOrder(order);
 187 }
 188
 189 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 190 {
 191     if (show != m_dirLister->showingDotFiles()) {
 192         m_dirLister->setShowingDotFiles(show);
 193         m_dirLister->stop();
 194         m_dirLister->openUrl(m_url, KDirLister::Reload);
 195     }
 196 }
 197
 198 void DolphinColumnWidget::setShowPreview(bool show)
 199 {
 200     m_iconManager->setShowPreview(show);
 201
 202     m_dirLister->stop();
 203     m_dirLister->openUrl(m_url, KDirLister::Reload);
 204 }
 205
 206 void DolphinColumnWidget::updateBackground()
 207 {
 208     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 209     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 210     // DolphinView a common helper-class should be available which can be shared
 211     // by all view implementations -> no hardcoded value anymore
 212     const QPalette::ColorRole role = viewport()->backgroundRole();
 213     QColor color = viewport()->palette().color(role);
 214     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 215
 216     QPalette palette = viewport()->palette();
 217     palette.setColor(role, color);
 218     viewport()->setPalette(palette);
 219
 220     update();
 221 }
 222
 223 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 224 {
 225     m_proxyModel->setFilterRegExp(nameFilter);
 226 }
 227
 228
 229 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 230 {
 231     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 232     viewOptions.font = m_font;
 233     viewOptions.decorationSize = m_decorationSize;
 234     viewOptions.showDecorationSelected = true;
 235     return viewOptions;
 236 }
 237
 238 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 239 {
 240     DragAndDropHelper::startDrag(this, supportedActions);
 241 }
 242
 243 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 244 {
 245     if (event->mimeData()->hasUrls()) {
 246         event->acceptProposedAction();
 247     }
 248
 249     m_dragging = true;
 250 }
 251
 252 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 253 {
 254     QListView::dragLeaveEvent(event);
 255
 256     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 257     m_dragging = false;
 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         const KFileItem item = itemForIndex(index);
 272         if (!item.isNull() && item.isDir()) {
 273             m_dropRect = visualRect(index);
 274         }
 275     }
 276     setDirtyRegion(m_dropRect);
 277
 278     if (event->mimeData()->hasUrls()) {
 279         // accept url drops, independently from the destination item
 280         event->acceptProposedAction();
 281     }
 282 }
 283
 284 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 285 {
 286     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 287     if (!urls.isEmpty()) {
 288         const QModelIndex index = indexAt(event->pos());
 289         const KFileItem item = itemForIndex(index);
 290         m_view->m_controller->indicateDroppedUrls(urls,
 291                                                   url(),
 292                                                   item);
 293         event->acceptProposedAction();
 294     }
 295     QListView::dropEvent(event);
 296     m_dragging = false;
 297 }
 298
 299 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 300 {
 301     if (!m_childUrl.isEmpty()) {
 302         // indicate the shown URL of the next column by highlighting the shown folder item
 303         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 304         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 305         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 306             const QRect itemRect = visualRect(proxyIndex);
 307             QPainter painter(viewport());
 308             painter.save();
 309
 310             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 311             color.setAlpha(32);
 312             painter.setPen(Qt::NoPen);
 313             painter.setBrush(color);
 314             painter.drawRect(itemRect);
 315
 316             painter.restore();
 317         }
 318     }
 319
 320     QListView::paintEvent(event);
 321
 322     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 323     if (m_dragging) {
 324         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 325         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 326     }
 327 }
 328
 329 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 330 {
 331     requestActivation();
 332     QListView::mousePressEvent(event);
 333 }
 334
 335 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 336 {
 337     QListView::keyPressEvent(event);
 338
 339     const QItemSelectionModel* selModel = selectionModel();
 340     const QModelIndex currentIndex = selModel->currentIndex();
 341     const bool trigger = currentIndex.isValid()
 342                          && (event->key() == Qt::Key_Return)
 343                          && (selModel->selectedIndexes().count() <= 1);
 344     if (trigger) {
 345         triggerItem(currentIndex);
 346     }
 347 }
 348
 349 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 350 {
 351     if (!m_active) {
 352         m_view->requestActivation(this);
 353         m_view->m_controller->triggerUrlChangeRequest(m_url);
 354     }
 355
 356     QListView::contextMenuEvent(event);
 357
 358     const QModelIndex index = indexAt(event->pos());
 359     if (index.isValid() || m_active) {
 360         // Only open a context menu above an item or if the mouse is above
 361         // the active column.
 362         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 363         m_view->m_controller->triggerContextMenuRequest(pos);
 364     }
 365 }
 366
 367 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 368 {
 369     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 370     if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
 371         event->ignore();
 372         return;
 373     }
 374     QListView::wheelEvent(event);
 375 }
 376
 377 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 378 {
 379     QListView::selectionChanged(selected, deselected);
 380
 381     QItemSelectionModel* selModel = m_view->selectionModel();
 382     selModel->select(selected, QItemSelectionModel::Select);
 383     selModel->select(deselected, QItemSelectionModel::Deselect);
 384 }
 385
 386 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 387 {
 388     const KFileItem item = itemForIndex(index);
 389     m_view->m_controller->triggerItem(item);
 390 }
 391
 392 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 393 {
 394     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 395     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 396     m_view->m_controller->emitItemEntered(item);
 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 }
 408
 409 void DolphinColumnWidget::activate()
 410 {
 411     setFocus(Qt::OtherFocusReason);
 412
 413     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 414     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 415     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 416     if (KGlobalSettings::singleClick()) {
 417         connect(this, SIGNAL(clicked(const QModelIndex&)),
 418                 this, SLOT(triggerItem(const QModelIndex&)));
 419     } else {
 420         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 421                 this, SLOT(triggerItem(const QModelIndex&)));
 422     }
 423
 424     if (selectionModel() && selectionModel()->currentIndex().isValid())
 425         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 426
 427     updateBackground();
 428 }
 429
 430 void DolphinColumnWidget::deactivate()
 431 {
 432     clearFocus();
 433
 434     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 435     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 436     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 437     if (KGlobalSettings::singleClick()) {
 438         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 439                    this, SLOT(triggerItem(const QModelIndex&)));
 440     } else {
 441         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 442                    this, SLOT(triggerItem(const QModelIndex&)));
 443     }
 444
 445     const QModelIndex current = selectionModel()->currentIndex();
 446     selectionModel()->clear();
 447     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 448     updateBackground();
 449 }
 450
 451 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 452 {
 453     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 454     return m_dolphinModel->itemForIndex(dirIndex);
 455 }
 456
 457
 458 #include "dolphincolumnwidget.moc"