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_url(url),
  57     m_childUrl(),
  58     m_font(),
  59     m_decorationSize(),
  60     m_dirLister(0),
  61     m_dolphinModel(0),
  62     m_proxyModel(0),
  63     m_iconManager(0),
  64     m_dropRect()
  65 {
  66     setMouseTracking(true);
  67     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  68     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  69     setSelectionBehavior(SelectItems);
  70     setSelectionMode(QAbstractItemView::ExtendedSelection);
  71     setDragDropMode(QAbstractItemView::DragDrop);
  72     setDropIndicatorShown(false);
  73     setSelectionRectVisible(true);
  74     setEditTriggers(QAbstractItemView::NoEditTriggers);
  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     if (DolphinSettings::instance().generalSettings()->showToolTips()) {
 140         new ToolTipManager(this, m_proxyModel);
 141     }
 142
 143     m_dirLister->openUrl(url, KDirLister::NoFlags);
 144
 145     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 146             this, SLOT(updateFont()));
 147 }
 148
 149 DolphinColumnWidget::~DolphinColumnWidget()
 150 {
 151     delete m_proxyModel;
 152     m_proxyModel = 0;
 153     delete m_dolphinModel;
 154     m_dolphinModel = 0;
 155     m_dirLister = 0; // deleted by m_dolphinModel
 156 }
 157
 158 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 159 {
 160     setIconSize(size);
 161     m_decorationSize = size;
 162     doItemsLayout();
 163     if (m_iconManager != 0) {
 164         m_iconManager->updatePreviews();
 165     }
 166 }
 167
 168 void DolphinColumnWidget::setActive(bool active)
 169 {
 170     if (m_active == active) {
 171         return;
 172     }
 173
 174     m_active = active;
 175
 176     if (active) {
 177         activate();
 178     } else {
 179         deactivate();
 180     }
 181 }
 182
 183 void DolphinColumnWidget::reload()
 184 {
 185     m_dirLister->stop();
 186     m_dirLister->openUrl(m_url, KDirLister::Reload);
 187 }
 188
 189 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 190 {
 191     m_proxyModel->setSorting(sorting);
 192 }
 193
 194 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 195 {
 196     m_proxyModel->setSortOrder(order);
 197 }
 198
 199 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 200 {
 201     if (show != m_dirLister->showingDotFiles()) {
 202         m_dirLister->setShowingDotFiles(show);
 203         m_dirLister->stop();
 204         m_dirLister->openUrl(m_url, KDirLister::Reload);
 205     }
 206 }
 207
 208 void DolphinColumnWidget::setShowPreview(bool show)
 209 {
 210     m_iconManager->setShowPreview(show);
 211
 212     m_dirLister->stop();
 213     m_dirLister->openUrl(m_url, KDirLister::Reload);
 214 }
 215
 216 void DolphinColumnWidget::updateBackground()
 217 {
 218     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 219     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 220     // DolphinView a common helper-class should be available which can be shared
 221     // by all view implementations -> no hardcoded value anymore
 222     const QPalette::ColorRole role = viewport()->backgroundRole();
 223     QColor color = viewport()->palette().color(role);
 224     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 225
 226     QPalette palette = viewport()->palette();
 227     palette.setColor(role, color);
 228     viewport()->setPalette(palette);
 229
 230     update();
 231 }
 232
 233 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 234 {
 235     m_proxyModel->setFilterRegExp(nameFilter);
 236 }
 237
 238 void DolphinColumnWidget::editItem(const KFileItem& item)
 239 {
 240     const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 241     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 242     if (proxyIndex.isValid()) {
 243         edit(proxyIndex);
 244     }
 245 }
 246
 247 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 248 {
 249     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 250     viewOptions.font = m_font;
 251     viewOptions.decorationSize = m_decorationSize;
 252     viewOptions.showDecorationSelected = true;
 253     return viewOptions;
 254 }
 255
 256 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 257 {
 258     DragAndDropHelper::startDrag(this, supportedActions);
 259 }
 260
 261 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 262 {
 263     if (event->mimeData()->hasUrls()) {
 264         event->acceptProposedAction();
 265     }
 266 }
 267
 268 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 269 {
 270     QListView::dragLeaveEvent(event);
 271     setDirtyRegion(m_dropRect);
 272 }
 273
 274 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 275 {
 276     QListView::dragMoveEvent(event);
 277
 278     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 279     const QModelIndex index = indexAt(event->pos());
 280     setDirtyRegion(m_dropRect);
 281
 282     m_dropRect.setSize(QSize()); // set as invalid
 283     if (index.isValid()) {
 284         m_view->m_controller->setItemView(this);
 285         const KFileItem item = m_view->m_controller->itemForIndex(index);
 286         if (!item.isNull() && item.isDir()) {
 287             m_dropRect = visualRect(index);
 288         }
 289     }
 290     setDirtyRegion(m_dropRect);
 291
 292     if (event->mimeData()->hasUrls()) {
 293         // accept url drops, independently from the destination item
 294         event->acceptProposedAction();
 295     }
 296 }
 297
 298 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 299 {
 300     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 301     if (!urls.isEmpty()) {
 302         const QModelIndex index = indexAt(event->pos());
 303         m_view->m_controller->setItemView(this);
 304         const KFileItem item = m_view->m_controller->itemForIndex(index);
 305         m_view->m_controller->indicateDroppedUrls(urls,
 306                                                   url(),
 307                                                   item);
 308         event->acceptProposedAction();
 309     }
 310     QListView::dropEvent(event);
 311 }
 312
 313 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 314 {
 315     if (!m_childUrl.isEmpty()) {
 316         // indicate the shown URL of the next column by highlighting the shown folder item
 317         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 318         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 319         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 320             const QRect itemRect = visualRect(proxyIndex);
 321             QPainter painter(viewport());
 322             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 323             color.setAlpha(32);
 324             painter.setPen(Qt::NoPen);
 325             painter.setBrush(color);
 326             painter.drawRect(itemRect);
 327         }
 328     }
 329
 330     QListView::paintEvent(event);
 331 }
 332
 333 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 334 {
 335     requestActivation();
 336     QListView::mousePressEvent(event);
 337 }
 338
 339 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 340 {
 341     QListView::keyPressEvent(event);
 342     requestActivation();
 343     m_view->m_controller->handleKeyPressEvent(event);
 344 }
 345
 346 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 347 {
 348     if (!m_active) {
 349         m_view->requestActivation(this);
 350         Q_ASSERT(m_view->m_controller->itemView() == this);
 351         m_view->m_controller->triggerUrlChangeRequest(m_url);
 352     }
 353
 354     QListView::contextMenuEvent(event);
 355
 356     const QModelIndex index = indexAt(event->pos());
 357     if (index.isValid() || m_active) {
 358         // Only open a context menu above an item or if the mouse is above
 359         // the active column.
 360         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 361         Q_ASSERT(m_view->m_controller->itemView() == this);
 362         m_view->m_controller->triggerContextMenuRequest(pos);
 363     }
 364 }
 365
 366 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 367 {
 368     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 369     if (event->modifiers() & Qt::ControlModifier) {
 370         event->ignore();
 371         return;
 372     }
 373     QListView::wheelEvent(event);
 374 }
 375
 376 void DolphinColumnWidget::leaveEvent(QEvent* event)
 377 {
 378     QListView::leaveEvent(event);
 379     // if the mouse is above an item and moved very fast outside the widget,
 380     // no viewportEntered() signal might be emitted although the mouse has been moved
 381     // above the viewport
 382     m_view->m_controller->emitViewportEntered();
 383 }
 384
 385 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 386 {
 387     QListView::selectionChanged(selected, deselected);
 388
 389     QItemSelectionModel* selModel = m_view->selectionModel();
 390     selModel->select(selected, QItemSelectionModel::Select);
 391     selModel->select(deselected, QItemSelectionModel::Deselect);
 392 }
 393
 394 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 395 {
 396     m_view->m_controller->setItemView(this);
 397     m_view->m_controller->emitItemEntered(index);
 398 }
 399
 400 void DolphinColumnWidget::requestActivation()
 401 {
 402     m_view->m_controller->setItemView(this);
 403     m_view->m_controller->requestActivation();
 404     if (!m_active) {
 405         m_view->requestActivation(this);
 406         m_view->m_controller->triggerUrlChangeRequest(m_url);
 407         selectionModel()->clear();
 408     }
 409 }
 410
 411 void DolphinColumnWidget::updateFont()
 412 {
 413     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 414     Q_ASSERT(settings != 0);
 415
 416     if (settings->useSystemFont()) {
 417         m_font = KGlobalSettings::generalFont();
 418     }
 419 }
 420
 421 void DolphinColumnWidget::activate()
 422 {
 423     setFocus(Qt::OtherFocusReason);
 424
 425     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 426     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 427     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 428     if (KGlobalSettings::singleClick()) {
 429         connect(this, SIGNAL(clicked(const QModelIndex&)),
 430                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 431     } else {
 432         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 433                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 434     }
 435
 436     if (selectionModel() && selectionModel()->currentIndex().isValid())
 437         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 438
 439     updateBackground();
 440 }
 441
 442 void DolphinColumnWidget::deactivate()
 443 {
 444     clearFocus();
 445
 446     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 447     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 448     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 449     if (KGlobalSettings::singleClick()) {
 450         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 451                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 452     } else {
 453         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 454                    m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 455     }
 456
 457     const QModelIndex current = selectionModel()->currentIndex();
 458     selectionModel()->clear();
 459     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 460     updateBackground();
 461 }
 462
 463 #include "dolphincolumnwidget.moc"