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