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 <kmimetyperesolver.h>
  41 #include <konqmimedata.h>
  42
  43 #include "iconmanager.h"
  44
  45 #include <QApplication>
  46 #include <QClipboard>
  47 #include <QPainter>
  48 #include <QPoint>
  49
  50 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  51                                          DolphinColumnView* columnView,
  52                                          const KUrl& url) :
  53     QListView(parent),
  54     m_active(true),
  55     m_view(columnView),
  56     m_selectionManager(0),
  57     m_url(url),
  58     m_childUrl(),
  59     m_font(),
  60     m_decorationSize(),
  61     m_dirLister(0),
  62     m_dolphinModel(0),
  63     m_proxyModel(0),
  64     m_iconManager(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     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(window());
 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         m_selectionManager = new SelectionManager(this);
 130         connect(m_selectionManager, SIGNAL(selectionChanged()),
 131                 this, SLOT(requestActivation()));
 132         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 133                 m_selectionManager, SLOT(reset()));
 134     }
 135
 136     new KMimeTypeResolver(this, m_dolphinModel);
 137     m_iconManager = new IconManager(this, m_proxyModel);
 138     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 139
 140     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 141         new ToolTipManager(this, m_proxyModel);
 142     }
 143
 144     m_dirLister->openUrl(url, KDirLister::NoFlags);
 145
 146     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 147             this, SLOT(updateFont()));
 148 }
 149
 150 DolphinColumnWidget::~DolphinColumnWidget()
 151 {
 152     delete m_proxyModel;
 153     m_proxyModel = 0;
 154     delete m_dolphinModel;
 155     m_dolphinModel = 0;
 156     m_dirLister = 0; // deleted by m_dolphinModel
 157 }
 158
 159 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 160 {
 161     setIconSize(size);
 162     m_decorationSize = size;
 163     doItemsLayout();
 164     if (m_iconManager != 0) {
 165         m_iconManager->updatePreviews();
 166     }
 167     if (m_selectionManager != 0) {
 168         m_selectionManager->reset();
 169     }
 170 }
 171
 172 void DolphinColumnWidget::setActive(bool active)
 173 {
 174     if (m_active == active) {
 175         return;
 176     }
 177
 178     m_active = active;
 179
 180     if (active) {
 181         activate();
 182     } else {
 183         deactivate();
 184     }
 185 }
 186
 187 void DolphinColumnWidget::reload()
 188 {
 189     m_dirLister->stop();
 190     m_dirLister->openUrl(m_url, KDirLister::Reload);
 191 }
 192
 193 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 194 {
 195     m_proxyModel->setSorting(sorting);
 196 }
 197
 198 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 199 {
 200     m_proxyModel->setSortOrder(order);
 201 }
 202
 203 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 204 {
 205     if (show != m_dirLister->showingDotFiles()) {
 206         m_dirLister->setShowingDotFiles(show);
 207         m_dirLister->stop();
 208         m_dirLister->openUrl(m_url, KDirLister::Reload);
 209     }
 210 }
 211
 212 void DolphinColumnWidget::setShowPreview(bool show)
 213 {
 214     m_iconManager->setShowPreview(show);
 215
 216     m_dirLister->stop();
 217     m_dirLister->openUrl(m_url, KDirLister::Reload);
 218 }
 219
 220 void DolphinColumnWidget::updateBackground()
 221 {
 222     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 223     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 224     // DolphinView a common helper-class should be available which can be shared
 225     // by all view implementations -> no hardcoded value anymore
 226     const QPalette::ColorRole role = viewport()->backgroundRole();
 227     QColor color = viewport()->palette().color(role);
 228     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 229
 230     QPalette palette = viewport()->palette();
 231     palette.setColor(role, color);
 232     viewport()->setPalette(palette);
 233
 234     update();
 235 }
 236
 237 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 238 {
 239     m_proxyModel->setFilterRegExp(nameFilter);
 240 }
 241
 242 void DolphinColumnWidget::editItem(const KFileItem& item)
 243 {
 244     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 245     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 246     if (proxyIndex.isValid()) {
 247         edit(proxyIndex);
 248     }
 249 }
 250
 251 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 252 {
 253     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 254     viewOptions.font = m_font;
 255     viewOptions.decorationSize = m_decorationSize;
 256     viewOptions.showDecorationSelected = true;
 257     return viewOptions;
 258 }
 259
 260 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 261 {
 262     DragAndDropHelper::startDrag(this, supportedActions);
 263 }
 264
 265 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 266 {
 267     if (event->mimeData()->hasUrls()) {
 268         event->acceptProposedAction();
 269     }
 270 }
 271
 272 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 273 {
 274     QListView::dragLeaveEvent(event);
 275     setDirtyRegion(m_dropRect);
 276 }
 277
 278 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 279 {
 280     QListView::dragMoveEvent(event);
 281
 282     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 283     const QModelIndex index = indexAt(event->pos());
 284     setDirtyRegion(m_dropRect);
 285
 286     m_dropRect.setSize(QSize()); // set as invalid
 287     if (index.isValid()) {
 288         m_view->m_controller->setItemView(this);
 289         const KFileItem item = m_view->m_controller->itemForIndex(index);
 290         if (!item.isNull() && item.isDir()) {
 291             m_dropRect = visualRect(index);
 292         }
 293     }
 294     setDirtyRegion(m_dropRect);
 295
 296     if (event->mimeData()->hasUrls()) {
 297         // accept url drops, independently from the destination item
 298         event->acceptProposedAction();
 299     }
 300 }
 301
 302 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 303 {
 304     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 305     if (!urls.isEmpty()) {
 306         const QModelIndex index = indexAt(event->pos());
 307         m_view->m_controller->setItemView(this);
 308         const KFileItem item = m_view->m_controller->itemForIndex(index);
 309         m_view->m_controller->indicateDroppedUrls(urls,
 310                                                   url(),
 311                                                   item);
 312         event->acceptProposedAction();
 313     }
 314     QListView::dropEvent(event);
 315 }
 316
 317 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 318 {
 319     if (!m_childUrl.isEmpty()) {
 320         // indicate the shown URL of the next column by highlighting the shown folder item
 321         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 322         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 323         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 324             const QRect itemRect = visualRect(proxyIndex);
 325             QPainter painter(viewport());
 326             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 327             color.setAlpha(32);
 328             painter.setPen(Qt::NoPen);
 329             painter.setBrush(color);
 330             painter.drawRect(itemRect);
 331         }
 332     }
 333
 334     QListView::paintEvent(event);
 335 }
 336
 337 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 338 {
 339     requestActivation();
 340     if (indexAt(event->pos()).isValid() && (event->button() == Qt::LeftButton)) {
 341         // TODO: see comment in DolphinIconsView::mousePressEvent()
 342         setState(QAbstractItemView::DraggingState);
 343     }
 344     QListView::mousePressEvent(event);
 345 }
 346
 347 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 348 {
 349     QListView::keyPressEvent(event);
 350     requestActivation();
 351     m_view->m_controller->handleKeyPressEvent(event);
 352 }
 353
 354 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 355 {
 356     if (!m_active) {
 357         m_view->requestActivation(this);
 358         Q_ASSERT(m_view->m_controller->itemView() == this);
 359         m_view->m_controller->triggerUrlChangeRequest(m_url);
 360     }
 361
 362     QListView::contextMenuEvent(event);
 363
 364     const QModelIndex index = indexAt(event->pos());
 365     if (index.isValid() || m_active) {
 366         // Only open a context menu above an item or if the mouse is above
 367         // the active column.
 368         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 369         Q_ASSERT(m_view->m_controller->itemView() == this);
 370         m_view->m_controller->triggerContextMenuRequest(pos);
 371     }
 372 }
 373
 374 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 375 {
 376     if (m_selectionManager != 0) {
 377         m_selectionManager->reset();
 378     }
 379
 380     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 381     if (event->modifiers() & Qt::ControlModifier) {
 382         event->ignore();
 383         return;
 384     }
 385
 386     QListView::wheelEvent(event);
 387 }
 388
 389 void DolphinColumnWidget::leaveEvent(QEvent* event)
 390 {
 391     QListView::leaveEvent(event);
 392     // if the mouse is above an item and moved very fast outside the widget,
 393     // no viewportEntered() signal might be emitted although the mouse has been moved
 394     // above the viewport
 395     m_view->m_controller->emitViewportEntered();
 396 }
 397
 398 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 399 {
 400     QListView::selectionChanged(selected, deselected);
 401
 402     QItemSelectionModel* selModel = m_view->selectionModel();
 403     selModel->select(selected, QItemSelectionModel::Select);
 404     selModel->select(deselected, QItemSelectionModel::Deselect);
 405 }
 406
 407 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 408 {
 409     m_view->m_controller->setItemView(this);
 410     m_view->m_controller->emitItemEntered(index);
 411 }
 412
 413 void DolphinColumnWidget::requestActivation()
 414 {
 415     m_view->m_controller->setItemView(this);
 416     m_view->m_controller->requestActivation();
 417     if (!m_active) {
 418         m_view->requestActivation(this);
 419         m_view->m_controller->triggerUrlChangeRequest(m_url);
 420         selectionModel()->clear();
 421     }
 422 }
 423
 424 void DolphinColumnWidget::updateFont()
 425 {
 426     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 427     Q_ASSERT(settings != 0);
 428
 429     if (settings->useSystemFont()) {
 430         m_font = KGlobalSettings::generalFont();
 431     }
 432 }
 433
 434 void DolphinColumnWidget::activate()
 435 {
 436     setFocus(Qt::OtherFocusReason);
 437
 438     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 439     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 440     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 441     if (KGlobalSettings::singleClick()) {
 442         connect(this, SIGNAL(clicked(const QModelIndex&)),
 443                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 444     } else {
 445         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 446                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 447     }
 448
 449     if (selectionModel() && selectionModel()->currentIndex().isValid())
 450         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 451
 452     updateBackground();
 453 }
 454
 455 void DolphinColumnWidget::deactivate()
 456 {
 457     clearFocus();
 458
 459     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 460     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 461     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 462     if (KGlobalSettings::singleClick()) {
 463         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 464                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 465     } else {
 466         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 467                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 468     }
 469
 470     const QModelIndex current = selectionModel()->currentIndex();
 471     selectionModel()->clear();
 472     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 473     updateBackground();
 474 }
 475
 476 #include "dolphincolumnwidget.moc"