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 "iconmanager.h"
  32 #include "selectionmanager.h"
  33 #include "tooltipmanager.h"
  34
  35 #include <kcolorscheme.h>
  36 #include <kdirlister.h>
  37 #include <kfileitem.h>
  38 #include <kio/previewjob.h>
  39 #include <kiconeffect.h>
  40 #include <kjob.h>
  41 #include <konqmimedata.h>
  42
  43 #include <QApplication>
  44 #include <QClipboard>
  45 #include <QPainter>
  46 #include <QPoint>
  47
  48 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  49                                          DolphinColumnView* columnView,
  50                                          const KUrl& url) :
  51     QListView(parent),
  52     m_active(true),
  53     m_view(columnView),
  54     m_selectionManager(0),
  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     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  67     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  68     setSelectionBehavior(SelectItems);
  69     setSelectionMode(QAbstractItemView::ExtendedSelection);
  70     setDragDropMode(QAbstractItemView::DragDrop);
  71     setDropIndicatorShown(false);
  72     setSelectionRectVisible(true);
  73     setEditTriggers(QAbstractItemView::NoEditTriggers);
  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         m_selectionManager = new SelectionManager(this);
 128         connect(m_selectionManager, SIGNAL(selectionChanged()),
 129                 this, SLOT(requestActivation()));
 130         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 131                 m_selectionManager, SLOT(reset()));
 132     }
 133
 134     m_iconManager = new IconManager(this, m_proxyModel);
 135     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 136
 137     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 138         new ToolTipManager(this, m_proxyModel);
 139     }
 140
 141     m_dirLister->openUrl(url, KDirLister::NoFlags);
 142
 143     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 144             this, SLOT(updateFont()));
 145 }
 146
 147 DolphinColumnWidget::~DolphinColumnWidget()
 148 {
 149     delete m_proxyModel;
 150     m_proxyModel = 0;
 151     delete m_dolphinModel;
 152     m_dolphinModel = 0;
 153     m_dirLister = 0; // deleted by m_dolphinModel
 154 }
 155
 156 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 157 {
 158     setIconSize(size);
 159     m_decorationSize = size;
 160     doItemsLayout();
 161     if (m_iconManager != 0) {
 162         m_iconManager->updatePreviews();
 163     }
 164     if (m_selectionManager != 0) {
 165         m_selectionManager->reset();
 166     }
 167 }
 168
 169 void DolphinColumnWidget::setActive(bool active)
 170 {
 171     if (m_active == active) {
 172         return;
 173     }
 174
 175     m_active = active;
 176
 177     if (active) {
 178         activate();
 179     } else {
 180         deactivate();
 181     }
 182 }
 183
 184 void DolphinColumnWidget::reload()
 185 {
 186     m_dirLister->stop();
 187     m_dirLister->openUrl(m_url, KDirLister::Reload);
 188 }
 189
 190 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 191 {
 192     m_proxyModel->setSorting(sorting);
 193 }
 194
 195 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 196 {
 197     m_proxyModel->setSortOrder(order);
 198 }
 199
 200 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 201 {
 202     if (show != m_dirLister->showingDotFiles()) {
 203         m_dirLister->setShowingDotFiles(show);
 204         m_dirLister->stop();
 205         m_dirLister->openUrl(m_url, KDirLister::Reload);
 206     }
 207 }
 208
 209 void DolphinColumnWidget::setShowPreview(bool show)
 210 {
 211     m_iconManager->setShowPreview(show);
 212
 213     m_dirLister->stop();
 214     m_dirLister->openUrl(m_url, KDirLister::Reload);
 215 }
 216
 217 void DolphinColumnWidget::updateBackground()
 218 {
 219     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 220     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 221     // DolphinView a common helper-class should be available which can be shared
 222     // by all view implementations -> no hardcoded value anymore
 223     const QPalette::ColorRole role = viewport()->backgroundRole();
 224     QColor color = viewport()->palette().color(role);
 225     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 226
 227     QPalette palette = viewport()->palette();
 228     palette.setColor(role, color);
 229     viewport()->setPalette(palette);
 230
 231     update();
 232 }
 233
 234 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 235 {
 236     m_proxyModel->setFilterRegExp(nameFilter);
 237 }
 238
 239 void DolphinColumnWidget::editItem(const KFileItem& item)
 240 {
 241     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 242     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 243     if (proxyIndex.isValid()) {
 244         edit(proxyIndex);
 245     }
 246 }
 247
 248 KFileItem DolphinColumnWidget::itemAt(const QPoint& pos) const
 249 {
 250     KFileItem item;
 251     const QModelIndex index = indexAt(pos);
 252     if (index.isValid() && (index.column() == DolphinModel::Name)) {
 253         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 254         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 255     }
 256     return item;
 257 }
 258
 259 KFileItemList DolphinColumnWidget::selectedItems() const
 260 {
 261     const QItemSelection selection = m_proxyModel->mapSelectionToSource(selectionModel()->selection());
 262     KFileItemList itemList;
 263
 264     const QModelIndexList indexList = selection.indexes();
 265     foreach (const QModelIndex &index, indexList) {
 266         KFileItem item = m_dolphinModel->itemForIndex(index);
 267         if (!item.isNull()) {
 268             itemList.append(item);
 269         }
 270     }
 271
 272     return itemList;
 273 }
 274
 275 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 276 {
 277     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 278     viewOptions.font = m_font;
 279     viewOptions.decorationSize = m_decorationSize;
 280     viewOptions.showDecorationSelected = true;
 281     return viewOptions;
 282 }
 283
 284 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 285 {
 286     DragAndDropHelper::startDrag(this, supportedActions);
 287 }
 288
 289 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 290 {
 291     if (event->mimeData()->hasUrls()) {
 292         event->acceptProposedAction();
 293     }
 294 }
 295
 296 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 297 {
 298     QListView::dragLeaveEvent(event);
 299     setDirtyRegion(m_dropRect);
 300 }
 301
 302 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 303 {
 304     QListView::dragMoveEvent(event);
 305
 306     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 307     const QModelIndex index = indexAt(event->pos());
 308     setDirtyRegion(m_dropRect);
 309
 310     m_dropRect.setSize(QSize()); // set as invalid
 311     if (index.isValid()) {
 312         m_view->m_controller->setItemView(this);
 313         const KFileItem item = m_view->m_controller->itemForIndex(index);
 314         if (!item.isNull() && item.isDir()) {
 315             m_dropRect = visualRect(index);
 316         }
 317     }
 318     setDirtyRegion(m_dropRect);
 319
 320     if (event->mimeData()->hasUrls()) {
 321         // accept url drops, independently from the destination item
 322         event->acceptProposedAction();
 323     }
 324 }
 325
 326 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 327 {
 328     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 329     if (!urls.isEmpty()) {
 330         const QModelIndex index = indexAt(event->pos());
 331         m_view->m_controller->setItemView(this);
 332         const KFileItem item = m_view->m_controller->itemForIndex(index);
 333         m_view->m_controller->indicateDroppedUrls(urls,
 334                                                   url(),
 335                                                   item);
 336         event->acceptProposedAction();
 337     }
 338     QListView::dropEvent(event);
 339 }
 340
 341 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 342 {
 343     if (!m_childUrl.isEmpty()) {
 344         // indicate the shown URL of the next column by highlighting the shown folder item
 345         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 346         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 347         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 348             const QRect itemRect = visualRect(proxyIndex);
 349             QPainter painter(viewport());
 350             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 351             color.setAlpha(32);
 352             painter.setPen(Qt::NoPen);
 353             painter.setBrush(color);
 354             painter.drawRect(itemRect);
 355         }
 356     }
 357
 358     QListView::paintEvent(event);
 359 }
 360
 361 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 362 {
 363     requestActivation();
 364     if (!indexAt(event->pos()).isValid()) {
 365         if (QApplication::mouseButtons() & Qt::MidButton) {
 366             m_view->m_controller->replaceUrlByClipboard();
 367         }
 368     } else if (event->button() == Qt::LeftButton) {
 369         // TODO: see comment in DolphinIconsView::mousePressEvent()
 370         setState(QAbstractItemView::DraggingState);
 371     }
 372     QListView::mousePressEvent(event);
 373 }
 374
 375 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 376 {
 377     QListView::keyPressEvent(event);
 378     requestActivation();
 379     m_view->m_controller->handleKeyPressEvent(event);
 380 }
 381
 382 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 383 {
 384     if (!m_active) {
 385         m_view->requestActivation(this);
 386         Q_ASSERT(m_view->m_controller->itemView() == this);
 387         m_view->m_controller->triggerUrlChangeRequest(m_url);
 388     }
 389
 390     QListView::contextMenuEvent(event);
 391
 392     const QModelIndex index = indexAt(event->pos());
 393     if (!index.isValid()) {
 394         clearSelection();
 395     }
 396
 397     if (index.isValid() || m_active) {
 398         // Only open a context menu above an item or if the mouse is above
 399         // the active column.
 400         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 401         Q_ASSERT(m_view->m_controller->itemView() == this);
 402         m_view->m_controller->triggerContextMenuRequest(pos);
 403     }
 404 }
 405
 406 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 407 {
 408     if (m_selectionManager != 0) {
 409         m_selectionManager->reset();
 410     }
 411
 412     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 413     if (event->modifiers() & Qt::ControlModifier) {
 414         event->ignore();
 415         return;
 416     }
 417
 418     QListView::wheelEvent(event);
 419 }
 420
 421 void DolphinColumnWidget::leaveEvent(QEvent* event)
 422 {
 423     QListView::leaveEvent(event);
 424     // if the mouse is above an item and moved very fast outside the widget,
 425     // no viewportEntered() signal might be emitted although the mouse has been moved
 426     // above the viewport
 427     m_view->m_controller->emitViewportEntered();
 428 }
 429
 430 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 431 {
 432     QListView::selectionChanged(selected, deselected);
 433
 434     QItemSelectionModel* selModel = m_view->selectionModel();
 435     selModel->select(selected, QItemSelectionModel::Select);
 436     selModel->select(deselected, QItemSelectionModel::Deselect);
 437 }
 438
 439 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 440 {
 441     m_view->m_controller->setItemView(this);
 442     m_view->m_controller->emitItemEntered(index);
 443 }
 444
 445 void DolphinColumnWidget::requestActivation()
 446 {
 447     m_view->m_controller->setItemView(this);
 448     m_view->m_controller->requestActivation();
 449     if (!m_active) {
 450         m_view->requestActivation(this);
 451         m_view->m_controller->triggerUrlChangeRequest(m_url);
 452         selectionModel()->clear();
 453     }
 454 }
 455
 456 void DolphinColumnWidget::updateFont()
 457 {
 458     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 459     Q_ASSERT(settings != 0);
 460
 461     if (settings->useSystemFont()) {
 462         m_font = KGlobalSettings::generalFont();
 463     }
 464 }
 465
 466 void DolphinColumnWidget::activate()
 467 {
 468     setFocus(Qt::OtherFocusReason);
 469
 470     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 471     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 472     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 473     if (KGlobalSettings::singleClick()) {
 474         connect(this, SIGNAL(clicked(const QModelIndex&)),
 475                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 476     } else {
 477         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 478                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 479     }
 480
 481     if (selectionModel() && selectionModel()->currentIndex().isValid())
 482         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 483
 484     updateBackground();
 485 }
 486
 487 void DolphinColumnWidget::deactivate()
 488 {
 489     clearFocus();
 490
 491     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 492     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 493     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 494     if (KGlobalSettings::singleClick()) {
 495         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 496                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 497     } else {
 498         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 499                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 500     }
 501
 502     const QModelIndex current = selectionModel()->currentIndex();
 503     selectionModel()->clear();
 504     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 505     updateBackground();
 506 }
 507
 508 #include "dolphincolumnwidget.moc"