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 #include "tooltipmanager.h"
  33
  34 #include <kcolorscheme.h>
  35 #include <kdirlister.h>
  36 #include <kfileitem.h>
  37 #include <kio/previewjob.h>
  38 #include <kiconeffect.h>
  39 #include <kjob.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_selectionManager(0),
  56     m_url(url),
  57     m_childUrl(),
  58     m_font(),
  59     m_decorationSize(),
  60     m_dirLister(0),
  61     m_dolphinModel(0),
  62     m_proxyModel(0),
  63     m_iconManager(0),
  64     m_dropRect()
  65 {
  66     setMouseTracking(true);
  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     setEditTriggers(QAbstractItemView::NoEditTriggers);
  75
  76     setVerticalScrollMode(QListView::ScrollPerPixel);
  77     setHorizontalScrollMode(QListView::ScrollPerPixel);
  78
  79     // apply the column mode settings to the widget
  80     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  81     Q_ASSERT(settings != 0);
  82
  83     if (settings->useSystemFont()) {
  84         m_font = KGlobalSettings::generalFont();
  85     } else {
  86         m_font = QFont(settings->fontFamily(),
  87                        settings->fontSize(),
  88                        settings->fontWeight(),
  89                        settings->italicFont());
  90     }
  91
  92     const int iconSize = settings->iconSize();
  93     setDecorationSize(QSize(iconSize, iconSize));
  94
  95     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  96     setItemDelegate(delegate);
  97
  98     activate();
  99
 100     connect(this, SIGNAL(viewportEntered()),
 101             m_view->m_controller, SLOT(emitViewportEntered()));
 102     connect(this, SIGNAL(entered(const QModelIndex&)),
 103             this, SLOT(slotEntered(const QModelIndex&)));
 104
 105     //m_dirLister = new DolphinDirLister(); TODO
 106     m_dirLister = new KDirLister();
 107     m_dirLister->setAutoUpdate(true);
 108     m_dirLister->setMainWindow(window());
 109     m_dirLister->setDelayedMimeTypes(true);
 110     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 111     m_dirLister->setShowingDotFiles(showHiddenFiles);
 112
 113     m_dolphinModel = new DolphinModel(this);
 114     m_dolphinModel->setDirLister(m_dirLister);
 115     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 116
 117     m_proxyModel = new DolphinSortFilterProxyModel(this);
 118     m_proxyModel->setSourceModel(m_dolphinModel);
 119     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 120     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 121     m_proxyModel->setSorting(dolphinView->sorting());
 122     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 123
 124     setModel(m_proxyModel);
 125     const bool useSelManager = KGlobalSettings::singleClick() &&
 126                                DolphinSettings::instance().generalSettings()->showSelectionToggle();
 127     if (useSelManager) {
 128         m_selectionManager = new SelectionManager(this);
 129         connect(m_selectionManager, SIGNAL(selectionChanged()),
 130                 this, SLOT(requestActivation()));
 131         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 132                 m_selectionManager, SLOT(reset()));
 133     }
 134
 135     m_iconManager = new IconManager(this, m_proxyModel);
 136     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 137
 138     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 139         new ToolTipManager(this, m_proxyModel);
 140     }
 141
 142     m_dirLister->openUrl(url, KDirLister::NoFlags);
 143
 144     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 145             this, SLOT(updateFont()));
 146 }
 147
 148 DolphinColumnWidget::~DolphinColumnWidget()
 149 {
 150     delete m_proxyModel;
 151     m_proxyModel = 0;
 152     delete m_dolphinModel;
 153     m_dolphinModel = 0;
 154     m_dirLister = 0; // deleted by m_dolphinModel
 155 }
 156
 157 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 158 {
 159     setIconSize(size);
 160     m_decorationSize = size;
 161     doItemsLayout();
 162     if (m_iconManager != 0) {
 163         m_iconManager->updatePreviews();
 164     }
 165     if (m_selectionManager != 0) {
 166         m_selectionManager->reset();
 167     }
 168 }
 169
 170 void DolphinColumnWidget::setActive(bool active)
 171 {
 172     if (m_active == active) {
 173         return;
 174     }
 175
 176     m_active = active;
 177
 178     if (active) {
 179         activate();
 180     } else {
 181         deactivate();
 182     }
 183 }
 184
 185 void DolphinColumnWidget::reload()
 186 {
 187     m_dirLister->stop();
 188     m_dirLister->openUrl(m_url, KDirLister::Reload);
 189 }
 190
 191 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 192 {
 193     m_proxyModel->setSorting(sorting);
 194 }
 195
 196 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 197 {
 198     m_proxyModel->setSortOrder(order);
 199 }
 200
 201 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 202 {
 203     if (show != m_dirLister->showingDotFiles()) {
 204         m_dirLister->setShowingDotFiles(show);
 205         m_dirLister->stop();
 206         m_dirLister->openUrl(m_url, KDirLister::Reload);
 207     }
 208 }
 209
 210 void DolphinColumnWidget::setShowPreview(bool show)
 211 {
 212     m_iconManager->setShowPreview(show);
 213
 214     m_dirLister->stop();
 215     m_dirLister->openUrl(m_url, KDirLister::Reload);
 216 }
 217
 218 void DolphinColumnWidget::updateBackground()
 219 {
 220     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 221     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 222     // DolphinView a common helper-class should be available which can be shared
 223     // by all view implementations -> no hardcoded value anymore
 224     const QPalette::ColorRole role = viewport()->backgroundRole();
 225     QColor color = viewport()->palette().color(role);
 226     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 227
 228     QPalette palette = viewport()->palette();
 229     palette.setColor(role, color);
 230     viewport()->setPalette(palette);
 231
 232     update();
 233 }
 234
 235 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 236 {
 237     m_proxyModel->setFilterRegExp(nameFilter);
 238 }
 239
 240 void DolphinColumnWidget::editItem(const KFileItem& item)
 241 {
 242     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 243     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 244     if (proxyIndex.isValid()) {
 245         edit(proxyIndex);
 246     }
 247 }
 248
 249 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 250 {
 251     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 252     viewOptions.font = m_font;
 253     viewOptions.decorationSize = m_decorationSize;
 254     viewOptions.showDecorationSelected = true;
 255     return viewOptions;
 256 }
 257
 258 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 259 {
 260     DragAndDropHelper::startDrag(this, supportedActions);
 261 }
 262
 263 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 264 {
 265     if (event->mimeData()->hasUrls()) {
 266         event->acceptProposedAction();
 267     }
 268 }
 269
 270 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 271 {
 272     QListView::dragLeaveEvent(event);
 273     setDirtyRegion(m_dropRect);
 274 }
 275
 276 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 277 {
 278     QListView::dragMoveEvent(event);
 279
 280     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 281     const QModelIndex index = indexAt(event->pos());
 282     setDirtyRegion(m_dropRect);
 283
 284     m_dropRect.setSize(QSize()); // set as invalid
 285     if (index.isValid()) {
 286         m_view->m_controller->setItemView(this);
 287         const KFileItem item = m_view->m_controller->itemForIndex(index);
 288         if (!item.isNull() && item.isDir()) {
 289             m_dropRect = visualRect(index);
 290         }
 291     }
 292     setDirtyRegion(m_dropRect);
 293
 294     if (event->mimeData()->hasUrls()) {
 295         // accept url drops, independently from the destination item
 296         event->acceptProposedAction();
 297     }
 298 }
 299
 300 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 301 {
 302     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 303     if (!urls.isEmpty()) {
 304         const QModelIndex index = indexAt(event->pos());
 305         m_view->m_controller->setItemView(this);
 306         const KFileItem item = m_view->m_controller->itemForIndex(index);
 307         m_view->m_controller->indicateDroppedUrls(urls,
 308                                                   url(),
 309                                                   item);
 310         event->acceptProposedAction();
 311     }
 312     QListView::dropEvent(event);
 313 }
 314
 315 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 316 {
 317     if (!m_childUrl.isEmpty()) {
 318         // indicate the shown URL of the next column by highlighting the shown folder item
 319         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 320         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 321         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 322             const QRect itemRect = visualRect(proxyIndex);
 323             QPainter painter(viewport());
 324             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 325             color.setAlpha(32);
 326             painter.setPen(Qt::NoPen);
 327             painter.setBrush(color);
 328             painter.drawRect(itemRect);
 329         }
 330     }
 331
 332     QListView::paintEvent(event);
 333 }
 334
 335 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 336 {
 337     requestActivation();
 338     if (!indexAt(event->pos()).isValid()) {
 339         if (QApplication::mouseButtons() & Qt::MidButton) {
 340             m_view->m_controller->replaceUrlByClipboard();
 341         }
 342     } else if (event->button() == Qt::LeftButton) {
 343         // TODO: see comment in DolphinIconsView::mousePressEvent()
 344         setState(QAbstractItemView::DraggingState);
 345     }
 346     QListView::mousePressEvent(event);
 347 }
 348
 349 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 350 {
 351     QListView::keyPressEvent(event);
 352     requestActivation();
 353     m_view->m_controller->handleKeyPressEvent(event);
 354 }
 355
 356 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 357 {
 358     if (!m_active) {
 359         m_view->requestActivation(this);
 360         Q_ASSERT(m_view->m_controller->itemView() == this);
 361         m_view->m_controller->triggerUrlChangeRequest(m_url);
 362     }
 363
 364     QListView::contextMenuEvent(event);
 365
 366     const QModelIndex index = indexAt(event->pos());
 367     if (index.isValid() || m_active) {
 368         // Only open a context menu above an item or if the mouse is above
 369         // the active column.
 370         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 371         Q_ASSERT(m_view->m_controller->itemView() == this);
 372         m_view->m_controller->triggerContextMenuRequest(pos);
 373     }
 374 }
 375
 376 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 377 {
 378     if (m_selectionManager != 0) {
 379         m_selectionManager->reset();
 380     }
 381
 382     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 383     if (event->modifiers() & Qt::ControlModifier) {
 384         event->ignore();
 385         return;
 386     }
 387
 388     QListView::wheelEvent(event);
 389 }
 390
 391 void DolphinColumnWidget::leaveEvent(QEvent* event)
 392 {
 393     QListView::leaveEvent(event);
 394     // if the mouse is above an item and moved very fast outside the widget,
 395     // no viewportEntered() signal might be emitted although the mouse has been moved
 396     // above the viewport
 397     m_view->m_controller->emitViewportEntered();
 398 }
 399
 400 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 401 {
 402     QListView::selectionChanged(selected, deselected);
 403
 404     QItemSelectionModel* selModel = m_view->selectionModel();
 405     selModel->select(selected, QItemSelectionModel::Select);
 406     selModel->select(deselected, QItemSelectionModel::Deselect);
 407 }
 408
 409 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 410 {
 411     m_view->m_controller->setItemView(this);
 412     m_view->m_controller->emitItemEntered(index);
 413 }
 414
 415 void DolphinColumnWidget::requestActivation()
 416 {
 417     m_view->m_controller->setItemView(this);
 418     m_view->m_controller->requestActivation();
 419     if (!m_active) {
 420         m_view->requestActivation(this);
 421         m_view->m_controller->triggerUrlChangeRequest(m_url);
 422         selectionModel()->clear();
 423     }
 424 }
 425
 426 void DolphinColumnWidget::updateFont()
 427 {
 428     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 429     Q_ASSERT(settings != 0);
 430
 431     if (settings->useSystemFont()) {
 432         m_font = KGlobalSettings::generalFont();
 433     }
 434 }
 435
 436 void DolphinColumnWidget::activate()
 437 {
 438     setFocus(Qt::OtherFocusReason);
 439
 440     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 441     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 442     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 443     if (KGlobalSettings::singleClick()) {
 444         connect(this, SIGNAL(clicked(const QModelIndex&)),
 445                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 446     } else {
 447         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 448                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 449     }
 450
 451     if (selectionModel() && selectionModel()->currentIndex().isValid())
 452         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 453
 454     updateBackground();
 455 }
 456
 457 void DolphinColumnWidget::deactivate()
 458 {
 459     clearFocus();
 460
 461     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 462     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 463     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 464     if (KGlobalSettings::singleClick()) {
 465         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 466                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 467     } else {
 468         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 469                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 470     }
 471
 472     const QModelIndex current = selectionModel()->currentIndex();
 473     selectionModel()->clear();
 474     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 475     updateBackground();
 476 }
 477
 478 #include "dolphincolumnwidget.moc"