apps/dolphin/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     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         SelectionManager* selManager = new SelectionManager(this);
 129         connect(selManager, SIGNAL(selectionChanged()),
 130                 this, SLOT(requestActivation()));
 131         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 132                 selManager, SLOT(reset()));
 133     }
 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     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 142             this, SLOT(updateFont()));
 143 }
 144
 145 DolphinColumnWidget::~DolphinColumnWidget()
 146 {
 147     delete m_proxyModel;
 148     m_proxyModel = 0;
 149     delete m_dolphinModel;
 150     m_dolphinModel = 0;
 151     m_dirLister = 0; // deleted by m_dolphinModel
 152 }
 153
 154 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 155 {
 156     setIconSize(size);
 157     m_decorationSize = size;
 158     doItemsLayout();
 159 }
 160
 161 void DolphinColumnWidget::setActive(bool active)
 162 {
 163     if (m_active == active) {
 164         return;
 165     }
 166
 167     m_active = active;
 168
 169     if (active) {
 170         activate();
 171     } else {
 172         deactivate();
 173     }
 174 }
 175
 176 void DolphinColumnWidget::reload()
 177 {
 178     m_dirLister->stop();
 179     m_dirLister->openUrl(m_url, KDirLister::Reload);
 180 }
 181
 182 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 183 {
 184     m_proxyModel->setSorting(sorting);
 185 }
 186
 187 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 188 {
 189     m_proxyModel->setSortOrder(order);
 190 }
 191
 192 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 193 {
 194     if (show != m_dirLister->showingDotFiles()) {
 195         m_dirLister->setShowingDotFiles(show);
 196         m_dirLister->stop();
 197         m_dirLister->openUrl(m_url, KDirLister::Reload);
 198     }
 199 }
 200
 201 void DolphinColumnWidget::setShowPreview(bool show)
 202 {
 203     m_iconManager->setShowPreview(show);
 204
 205     m_dirLister->stop();
 206     m_dirLister->openUrl(m_url, KDirLister::Reload);
 207 }
 208
 209 void DolphinColumnWidget::updateBackground()
 210 {
 211     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 212     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 213     // DolphinView a common helper-class should be available which can be shared
 214     // by all view implementations -> no hardcoded value anymore
 215     const QPalette::ColorRole role = viewport()->backgroundRole();
 216     QColor color = viewport()->palette().color(role);
 217     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 218
 219     QPalette palette = viewport()->palette();
 220     palette.setColor(role, color);
 221     viewport()->setPalette(palette);
 222
 223     update();
 224 }
 225
 226 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 227 {
 228     m_proxyModel->setFilterRegExp(nameFilter);
 229 }
 230
 231
 232 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 233 {
 234     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 235     viewOptions.font = m_font;
 236     viewOptions.decorationSize = m_decorationSize;
 237     viewOptions.showDecorationSelected = true;
 238     return viewOptions;
 239 }
 240
 241 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 242 {
 243     DragAndDropHelper::startDrag(this, supportedActions);
 244 }
 245
 246 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 247 {
 248     if (event->mimeData()->hasUrls()) {
 249         event->acceptProposedAction();
 250     }
 251
 252     m_dragging = true;
 253 }
 254
 255 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 256 {
 257     QListView::dragLeaveEvent(event);
 258
 259     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 260     m_dragging = false;
 261     setDirtyRegion(m_dropRect);
 262 }
 263
 264 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 265 {
 266     QListView::dragMoveEvent(event);
 267
 268     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 269     const QModelIndex index = indexAt(event->pos());
 270     setDirtyRegion(m_dropRect);
 271
 272     m_dropRect.setSize(QSize()); // set as invalid
 273     if (index.isValid()) {
 274         m_view->m_controller->setItemView(this);
 275         const KFileItem item = m_view->m_controller->itemForIndex(index);
 276         if (!item.isNull() && item.isDir()) {
 277             m_dropRect = visualRect(index);
 278         }
 279     }
 280     setDirtyRegion(m_dropRect);
 281
 282     if (event->mimeData()->hasUrls()) {
 283         // accept url drops, independently from the destination item
 284         event->acceptProposedAction();
 285     }
 286 }
 287
 288 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 289 {
 290     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 291     if (!urls.isEmpty()) {
 292         const QModelIndex index = indexAt(event->pos());
 293         m_view->m_controller->setItemView(this);
 294         const KFileItem item = m_view->m_controller->itemForIndex(index);
 295         m_view->m_controller->indicateDroppedUrls(urls,
 296                                                   url(),
 297                                                   item);
 298         event->acceptProposedAction();
 299     }
 300     QListView::dropEvent(event);
 301     m_dragging = false;
 302 }
 303
 304 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 305 {
 306     if (!m_childUrl.isEmpty()) {
 307         // indicate the shown URL of the next column by highlighting the shown folder item
 308         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 309         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 310         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 311             const QRect itemRect = visualRect(proxyIndex);
 312             QPainter painter(viewport());
 313             painter.save();
 314
 315             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 316             color.setAlpha(32);
 317             painter.setPen(Qt::NoPen);
 318             painter.setBrush(color);
 319             painter.drawRect(itemRect);
 320
 321             painter.restore();
 322         }
 323     }
 324
 325     QListView::paintEvent(event);
 326
 327     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 328     if (m_dragging) {
 329         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 330         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 331     }
 332 }
 333
 334 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 335 {
 336     requestActivation();
 337     QListView::mousePressEvent(event);
 338 }
 339
 340 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 341 {
 342     QListView::keyPressEvent(event);
 343     requestActivation();
 344     m_view->m_controller->handleKeyPressEvent(event);
 345 }
 346
 347 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 348 {
 349     if (!m_active) {
 350         m_view->requestActivation(this);
 351         Q_ASSERT(m_view->m_controller->itemView() == this);
 352         m_view->m_controller->triggerUrlChangeRequest(m_url);
 353     }
 354
 355     QListView::contextMenuEvent(event);
 356
 357     const QModelIndex index = indexAt(event->pos());
 358     if (index.isValid() || m_active) {
 359         // Only open a context menu above an item or if the mouse is above
 360         // the active column.
 361         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 362         Q_ASSERT(m_view->m_controller->itemView() == this);
 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) {
 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::slotEntered(const QModelIndex& index)
 387 {
 388     m_view->m_controller->setItemView(this);
 389     m_view->m_controller->emitItemEntered(index);
 390 }
 391
 392 void DolphinColumnWidget::requestActivation()
 393 {
 394     m_view->m_controller->requestActivation();
 395     if (!m_active) {
 396         m_view->requestActivation(this);
 397         m_view->m_controller->triggerUrlChangeRequest(m_url);
 398         selectionModel()->clear();
 399     }
 400     Q_ASSERT(m_view->m_controller->itemView() == this);
 401 }
 402
 403 void DolphinColumnWidget::updateFont()
 404 {
 405     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 406     Q_ASSERT(settings != 0);
 407
 408     if (settings->useSystemFont()) {
 409         m_font = KGlobalSettings::generalFont();
 410     }
 411 }
 412
 413 void DolphinColumnWidget::activate()
 414 {
 415     setFocus(Qt::OtherFocusReason);
 416
 417     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 418     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 419     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 420     if (KGlobalSettings::singleClick()) {
 421         connect(this, SIGNAL(clicked(const QModelIndex&)),
 422                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 423     } else {
 424         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 425                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 426     }
 427
 428     if (selectionModel() && selectionModel()->currentIndex().isValid())
 429         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 430
 431     updateBackground();
 432 }
 433
 434 void DolphinColumnWidget::deactivate()
 435 {
 436     clearFocus();
 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         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 443                    this, SLOT(triggerItem(const QModelIndex&)));
 444     } else {
 445         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 446                    this, SLOT(triggerItem(const QModelIndex&)));
 447     }
 448
 449     const QModelIndex current = selectionModel()->currentIndex();
 450     selectionModel()->clear();
 451     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 452     updateBackground();
 453 }
 454
 455 #include "dolphincolumnwidget.moc"