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 "dolphinmodel.h"
  27 #include "dolphinsortfilterproxymodel.h"
  28 #include "dolphinsettings.h"
  29
  30 #include "dolphin_columnmodesettings.h"
  31
  32 #include <kcolorutils.h>
  33 #include <kcolorscheme.h>
  34 #include <kdirlister.h>
  35 #include <kfileitem.h>
  36 #include <kio/previewjob.h>
  37 #include <kiconeffect.h>
  38 #include <konqmimedata.h>
  39
  40 #include <QAbstractProxyModel>
  41 #include <QApplication>
  42 #include <QClipboard>
  43 #include <QPoint>
  44 #include <QScrollBar>
  45 #include <QTimer>
  46 #include <QTimeLine>
  47
  48 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  49                                          DolphinColumnView* columnView,
  50                                          const KUrl& url) :
  51     QListView(parent),
  52     m_active(true),
  53     m_showPreview(false),
  54     m_view(columnView),
  55     m_url(url),
  56     m_childUrl(),
  57     m_viewOptions(),
  58     m_dirLister(0),
  59     m_dolphinModel(0),
  60     m_proxyModel(0),
  61     m_dragging(false),
  62     m_dropRect()
  63 {
  64     setMouseTracking(true);
  65     viewport()->setAttribute(Qt::WA_Hover);
  66     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  67     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  68     setSelectionBehavior(SelectItems);
  69     setSelectionMode(QAbstractItemView::ExtendedSelection);
  70     setDragDropMode(QAbstractItemView::DragDrop);
  71     setDropIndicatorShown(false);
  72     setFocusPolicy(Qt::NoFocus);
  73
  74 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  75 //       check avoids a division by zero happening on versions before 4.3.1.
  76 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  77 //       ereslibre
  78 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  79     setVerticalScrollMode(QListView::ScrollPerPixel);
  80     setHorizontalScrollMode(QListView::ScrollPerPixel);
  81 #endif
  82
  83     // apply the column mode settings to the widget
  84     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  85     Q_ASSERT(settings != 0);
  86
  87     m_viewOptions = QListView::viewOptions();
  88
  89     QFont font(settings->fontFamily(), settings->fontSize());
  90     font.setItalic(settings->italicFont());
  91     font.setBold(settings->boldFont());
  92     m_viewOptions.font = font;
  93
  94     const int iconSize = settings->iconSize();
  95     m_viewOptions.decorationSize = QSize(iconSize, iconSize);
  96
  97     m_viewOptions.showDecorationSelected = true;
  98
  99     KFileItemDelegate* delegate = new KFileItemDelegate(this);
 100     setItemDelegate(delegate);
 101
 102     activate();
 103
 104     connect(this, SIGNAL(viewportEntered()),
 105             m_view->m_controller, SLOT(emitViewportEntered()));
 106     connect(this, SIGNAL(entered(const QModelIndex&)),
 107             this, SLOT(slotEntered(const QModelIndex&)));
 108
 109     //m_dirLister = new DolphinDirLister(); TODO
 110     m_dirLister = new KDirLister();
 111     m_dirLister->setAutoUpdate(true);
 112     m_dirLister->setMainWindow(this);
 113     m_dirLister->setDelayedMimeTypes(true);
 114     m_dirLister->setShowingDotFiles(m_view->m_controller->showHiddenFiles());
 115     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 116             this, SLOT(generatePreviews(const KFileItemList&)));
 117
 118     m_dolphinModel = new DolphinModel(this);
 119     m_dolphinModel->setDirLister(m_dirLister);
 120     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 121
 122     m_proxyModel = new DolphinSortFilterProxyModel(this);
 123     m_proxyModel->setSourceModel(m_dolphinModel);
 124
 125     setModel(m_proxyModel);
 126
 127     m_dirLister->openUrl(url, KDirLister::NoFlags);
 128 }
 129
 130 DolphinColumnWidget::~DolphinColumnWidget()
 131 {
 132     delete m_dirLister;
 133     m_dirLister = 0;
 134 }
 135
 136 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 137 {
 138     m_viewOptions.decorationSize = size;
 139     doItemsLayout();
 140 }
 141
 142 void DolphinColumnWidget::setActive(bool active)
 143 {
 144     if (m_active == active) {
 145         return;
 146     }
 147
 148     m_active = active;
 149
 150     if (active) {
 151         activate();
 152     } else {
 153         deactivate();
 154     }
 155 }
 156
 157 void DolphinColumnWidget::reload()
 158 {
 159     m_dirLister->stop();
 160     m_dirLister->openUrl(m_url, KDirLister::Reload);
 161 }
 162
 163 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 164 {
 165     if (show != m_dirLister->showingDotFiles()) {
 166         m_dirLister->setShowingDotFiles(show);
 167         m_dirLister->stop();
 168         m_dirLister->openUrl(m_url, KDirLister::Reload);
 169     }
 170 }
 171
 172 void DolphinColumnWidget::setShowPreview(bool show)
 173 {
 174     if (show != m_showPreview) {
 175         m_dirLister->stop();
 176         m_dirLister->openUrl(m_url, KDirLister::Reload);
 177     }
 178 }
 179
 180 void DolphinColumnWidget::updateBackground()
 181 {
 182     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 183     if (!m_active || !m_view->m_active) {
 184         color.setAlpha(0);
 185     }
 186     QPalette palette = viewport()->palette();
 187     palette.setColor(viewport()->backgroundRole(), color);
 188     viewport()->setPalette(palette);
 189
 190     update();
 191 }
 192
 193 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 194 {
 195     // The name filter of KDirLister does a 'hard' filtering, which
 196     // means that only the items are shown where the names match
 197     // exactly the filter. This is non-transparent for the user, which
 198     // just wants to have a 'soft' filtering: does the name contain
 199     // the filter string?
 200     QString adjustedFilter(nameFilter);
 201     adjustedFilter.insert(0, '*');
 202     adjustedFilter.append('*');
 203
 204     m_dirLister->setNameFilter(adjustedFilter);
 205     m_dirLister->emitChanges();
 206 }
 207
 208 QString DolphinColumnWidget::nameFilter() const
 209 {
 210     return m_dirLister->nameFilter();
 211 }
 212
 213 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 214 {
 215     if (event->mimeData()->hasUrls()) {
 216         event->acceptProposedAction();
 217     }
 218
 219     m_dragging = true;
 220 }
 221
 222 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 223 {
 224     QListView::dragLeaveEvent(event);
 225
 226     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 227     m_dragging = false;
 228     setDirtyRegion(m_dropRect);
 229 }
 230
 231 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 232 {
 233     QListView::dragMoveEvent(event);
 234
 235     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 236     const QModelIndex index = indexAt(event->pos());
 237     setDirtyRegion(m_dropRect);
 238     m_dropRect = visualRect(index);
 239     setDirtyRegion(m_dropRect);
 240 }
 241
 242 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 243 {
 244     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 245     if (!urls.isEmpty()) {
 246         event->acceptProposedAction();
 247         m_view->m_controller->indicateDroppedUrls(urls,
 248                                                   url(),
 249                                                   indexAt(event->pos()),
 250                                                   event->source());
 251     }
 252     QListView::dropEvent(event);
 253     m_dragging = false;
 254 }
 255
 256 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 257 {
 258     if (!m_childUrl.isEmpty()) {
 259         // indicate the shown URL of the next column by highlighting the shown folder item
 260         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 261         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 262         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 263             const QRect itemRect = visualRect(proxyIndex);
 264             QPainter painter(viewport());
 265             painter.save();
 266
 267             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 268             color.setAlpha(32);
 269             painter.setPen(Qt::NoPen);
 270             painter.setBrush(color);
 271             painter.drawRect(itemRect);
 272
 273             painter.restore();
 274         }
 275     }
 276
 277     QListView::paintEvent(event);
 278
 279     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 280     if (m_dragging) {
 281         const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
 282         DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
 283     }
 284 }
 285
 286 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 287 {
 288     m_view->m_controller->requestActivation();
 289     if (!m_active) {
 290         m_view->requestActivation(this);
 291         m_view->m_controller->triggerUrlChangeRequest(m_url);
 292     }
 293
 294     QListView::mousePressEvent(event);
 295 }
 296
 297 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 298 {
 299     QListView::keyPressEvent(event);
 300
 301     const QItemSelectionModel* selModel = selectionModel();
 302     const QModelIndex currentIndex = selModel->currentIndex();
 303     const bool trigger = currentIndex.isValid()
 304                          && (event->key() == Qt::Key_Return)
 305                          && (selModel->selectedIndexes().count() <= 1);
 306     if (trigger) {
 307         triggerItem(currentIndex);
 308     }
 309 }
 310
 311 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 312 {
 313     if (!m_active) {
 314         m_view->requestActivation(this);
 315         m_view->m_controller->triggerUrlChangeRequest(m_url);
 316     }
 317
 318     QListView::contextMenuEvent(event);
 319
 320     const QModelIndex index = indexAt(event->pos());
 321     if (index.isValid() || m_active) {
 322         // Only open a context menu above an item or if the mouse is above
 323         // the active column.
 324         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 325         m_view->m_controller->triggerContextMenuRequest(pos);
 326     }
 327 }
 328
 329 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 330 {
 331     QListView::selectionChanged(selected, deselected);
 332
 333     QItemSelectionModel* selModel = m_view->selectionModel();
 334     selModel->select(selected, QItemSelectionModel::Select);
 335     selModel->select(deselected, QItemSelectionModel::Deselect);
 336 }
 337 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 338 {
 339     const KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 340     m_view->m_controller->triggerItem(item);
 341 }
 342
 343 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 344 {
 345     // TODO: same implementation as in DolphinView; create helper class
 346     // for generatePreviews(), showPreview() and isCutItem()
 347
 348     if (m_view->m_controller->showPreview()) {
 349         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 350         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 351                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 352     }
 353 }
 354
 355 void DolphinColumnWidget::showPreview(const KFileItem& item, const QPixmap& pixmap)
 356 {
 357     // TODO: same implementation as in DolphinView; create helper class
 358     // for generatePreviews(), showPreview() and isCutItem()
 359
 360     Q_ASSERT(!item.isNull());
 361     if (item.url().directory() != m_dirLister->url().path()) {
 362         // the preview job is still working on items of an older URL, hence
 363         // the item is not part of the directory model anymore
 364         return;
 365     }
 366
 367     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 368     if (idx.isValid() && (idx.column() == 0)) {
 369         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 370         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 371             KIconEffect iconEffect;
 372             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 373             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 374         } else {
 375             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 376         }
 377     }
 378 }
 379
 380 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 381 {
 382     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 383     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 384     m_view->m_controller->emitItemEntered(item);
 385 }
 386
 387 void DolphinColumnWidget::activate()
 388 {
 389     if (m_view->hasFocus()) {
 390         setFocus(Qt::OtherFocusReason);
 391     }
 392     m_view->setFocusProxy(this);
 393
 394     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 395     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 396     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 397     if (KGlobalSettings::singleClick()) {
 398         connect(this, SIGNAL(clicked(const QModelIndex&)),
 399                 this, SLOT(triggerItem(const QModelIndex&)));
 400     } else {
 401         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 402                 this, SLOT(triggerItem(const QModelIndex&)));
 403     }
 404
 405     if (!m_childUrl.isEmpty()) {
 406         // assure that the current index is set on the index that represents
 407         // the child URL
 408         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 409         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 410         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 411     }
 412
 413     updateBackground();
 414 }
 415
 416 void DolphinColumnWidget::deactivate()
 417 {
 418     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 419     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 420     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 421     if (KGlobalSettings::singleClick()) {
 422         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 423                    this, SLOT(triggerItem(const QModelIndex&)));
 424     } else {
 425         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 426                    this, SLOT(triggerItem(const QModelIndex&)));
 427     }
 428
 429     selectionModel()->clear();
 430     updateBackground();
 431 }
 432
 433 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 434 {
 435     // TODO: same implementation as in DolphinView; create helper class
 436     // for generatePreviews(), showPreview() and isCutItem()
 437
 438     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 439     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 440
 441     const KUrl& itemUrl = item.url();
 442     KUrl::List::const_iterator it = cutUrls.begin();
 443     const KUrl::List::const_iterator end = cutUrls.end();
 444     while (it != end) {
 445         if (*it == itemUrl) {
 446             return true;
 447         }
 448         ++it;
 449     }
 450
 451     return false;
 452 }
 453
 454 #include "dolphincolumnwidget.moc"