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         const KFileItem item = itemForIndex(index);
 281         if (!item.isNull() && item.isDir()) {
 282             m_dropRect = visualRect(index);
 283         }
 284     }
 285     setDirtyRegion(m_dropRect);
 286
 287     if (event->mimeData()->hasUrls()) {
 288         // accept url drops, independently from the destination item
 289         event->acceptProposedAction();
 290     }
 291 }
 292
 293 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 294 {
 295     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 296     if (!urls.isEmpty()) {
 297         const QModelIndex index = indexAt(event->pos());
 298         const KFileItem item = itemForIndex(index);
 299         m_view->m_controller->indicateDroppedUrls(urls,
 300                                                   url(),
 301                                                   item);
 302         event->acceptProposedAction();
 303     }
 304     QListView::dropEvent(event);
 305     m_dragging = false;
 306 }
 307
 308 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 309 {
 310     if (!m_childUrl.isEmpty()) {
 311         // indicate the shown URL of the next column by highlighting the shown folder item
 312         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 313         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 314         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 315             const QRect itemRect = visualRect(proxyIndex);
 316             QPainter painter(viewport());
 317             painter.save();
 318
 319             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 320             color.setAlpha(32);
 321             painter.setPen(Qt::NoPen);
 322             painter.setBrush(color);
 323             painter.drawRect(itemRect);
 324
 325             painter.restore();
 326         }
 327     }
 328
 329     QListView::paintEvent(event);
 330
 331     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 332     if (m_dragging) {
 333         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 334         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 335     }
 336 }
 337
 338 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 339 {
 340     requestActivation();
 341     QListView::mousePressEvent(event);
 342 }
 343
 344 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 345 {
 346     QListView::keyPressEvent(event);
 347
 348     const QItemSelectionModel* selModel = selectionModel();
 349     const QModelIndex currentIndex = selModel->currentIndex();
 350     const bool trigger = currentIndex.isValid()
 351                          && (event->key() == Qt::Key_Return)
 352                          && (selModel->selectedIndexes().count() <= 1);
 353     if (trigger) {
 354         triggerItem(currentIndex);
 355     }
 356 }
 357
 358 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 359 {
 360     if (!m_active) {
 361         m_view->requestActivation(this);
 362         m_view->m_controller->triggerUrlChangeRequest(m_url);
 363     }
 364
 365     QListView::contextMenuEvent(event);
 366
 367     const QModelIndex index = indexAt(event->pos());
 368     if (index.isValid() || m_active) {
 369         // Only open a context menu above an item or if the mouse is above
 370         // the active column.
 371         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 372         m_view->m_controller->triggerContextMenuRequest(pos);
 373     }
 374 }
 375
 376 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 377 {
 378     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 379     if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
 380         event->ignore();
 381         return;
 382     }
 383     QListView::wheelEvent(event);
 384 }
 385
 386 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 387 {
 388     QListView::selectionChanged(selected, deselected);
 389
 390     QItemSelectionModel* selModel = m_view->selectionModel();
 391     selModel->select(selected, QItemSelectionModel::Select);
 392     selModel->select(deselected, QItemSelectionModel::Deselect);
 393 }
 394
 395 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 396 {
 397     const KFileItem item = itemForIndex(index);
 398     m_view->m_controller->triggerItem(item);
 399 }
 400
 401 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 402 {
 403     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 404     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 405     m_view->m_controller->emitItemEntered(item);
 406 }
 407
 408 void DolphinColumnWidget::requestActivation()
 409 {
 410     m_view->m_controller->requestActivation();
 411     if (!m_active) {
 412         m_view->requestActivation(this);
 413         m_view->m_controller->triggerUrlChangeRequest(m_url);
 414         selectionModel()->clear();
 415     }
 416 }
 417
 418 void DolphinColumnWidget::updateFont()
 419 {
 420     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 421     Q_ASSERT(settings != 0);
 422
 423     if (settings->useSystemFont()) {
 424         m_font = KGlobalSettings::generalFont();
 425     }
 426 }
 427
 428 void DolphinColumnWidget::activate()
 429 {
 430     setFocus(Qt::OtherFocusReason);
 431
 432     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 433     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 434     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 435     if (KGlobalSettings::singleClick()) {
 436         connect(this, SIGNAL(clicked(const QModelIndex&)),
 437                 this, SLOT(triggerItem(const QModelIndex&)));
 438     } else {
 439         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 440                 this, SLOT(triggerItem(const QModelIndex&)));
 441     }
 442
 443     if (selectionModel() && selectionModel()->currentIndex().isValid())
 444         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 445
 446     updateBackground();
 447 }
 448
 449 void DolphinColumnWidget::deactivate()
 450 {
 451     clearFocus();
 452
 453     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 454     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 455     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 456     if (KGlobalSettings::singleClick()) {
 457         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 458                    this, SLOT(triggerItem(const QModelIndex&)));
 459     } else {
 460         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 461                    this, SLOT(triggerItem(const QModelIndex&)));
 462     }
 463
 464     const QModelIndex current = selectionModel()->currentIndex();
 465     selectionModel()->clear();
 466     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 467     updateBackground();
 468 }
 469
 470 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 471 {
 472     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 473     return m_dolphinModel->itemForIndex(dirIndex);
 474 }
 475
 476
 477 #include "dolphincolumnwidget.moc"