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 #include "dolphin_columnmodesettings.h"
  30 #include "draganddrophelper.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 <kmimetyperesolver.h>
  39 #include <konqmimedata.h>
  40
  41 #include <QAbstractProxyModel>
  42 #include <QApplication>
  43 #include <QClipboard>
  44 #include <QPoint>
  45 #include <QScrollBar>
  46 #include <QTimer>
  47 #include <QTimeLine>
  48
  49 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  50                                          DolphinColumnView* columnView,
  51                                          const KUrl& url) :
  52     QListView(parent),
  53     m_active(true),
  54     m_showPreview(false),
  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_dragging(false),
  64     m_dropRect()
  65 {
  66     setMouseTracking(true);
  67     viewport()->setAttribute(Qt::WA_Hover);
  68     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  69     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  70     setSelectionBehavior(SelectItems);
  71     setSelectionMode(QAbstractItemView::ExtendedSelection);
  72     setDragDropMode(QAbstractItemView::DragDrop);
  73     setDropIndicatorShown(false);
  74
  75 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  76 //       check avoids a division by zero happening on versions before 4.3.1.
  77 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  78 //       ereslibre
  79 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  80     setVerticalScrollMode(QListView::ScrollPerPixel);
  81     setHorizontalScrollMode(QListView::ScrollPerPixel);
  82 #endif
  83
  84     // apply the column mode settings to the widget
  85     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  86     Q_ASSERT(settings != 0);
  87
  88     m_font = QFont(settings->fontFamily(), settings->fontSize());
  89     m_font.setItalic(settings->italicFont());
  90     m_font.setBold(settings->boldFont());
  91
  92     const int iconSize = settings->iconSize();
  93     m_decorationSize = 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(this);
 109     m_dirLister->setDelayedMimeTypes(true);
 110     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 111     m_dirLister->setShowingDotFiles(showHiddenFiles);
 112     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 113             this, SLOT(generatePreviews(const KFileItemList&)));
 114
 115     m_dolphinModel = new DolphinModel(this);
 116     m_dolphinModel->setDirLister(m_dirLister);
 117     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 118
 119     m_proxyModel = new DolphinSortFilterProxyModel(this);
 120     m_proxyModel->setSourceModel(m_dolphinModel);
 121
 122     setModel(m_proxyModel);
 123     new KMimeTypeResolver(this, m_dolphinModel);
 124
 125     m_dirLister->openUrl(url, KDirLister::NoFlags);
 126 }
 127
 128 DolphinColumnWidget::~DolphinColumnWidget()
 129 {
 130     delete m_dirLister;
 131     m_dirLister = 0;
 132 }
 133
 134 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 135 {
 136     m_decorationSize = size;
 137     doItemsLayout();
 138 }
 139
 140 void DolphinColumnWidget::setActive(bool active)
 141 {
 142     if (m_active == active) {
 143         return;
 144     }
 145
 146     m_active = active;
 147
 148     if (active) {
 149         activate();
 150     } else {
 151         deactivate();
 152     }
 153 }
 154
 155 void DolphinColumnWidget::reload()
 156 {
 157     m_dirLister->stop();
 158     m_dirLister->openUrl(m_url, KDirLister::Reload);
 159 }
 160
 161 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 162 {
 163     if (show != m_dirLister->showingDotFiles()) {
 164         m_dirLister->setShowingDotFiles(show);
 165         m_dirLister->stop();
 166         m_dirLister->openUrl(m_url, KDirLister::Reload);
 167     }
 168 }
 169
 170 void DolphinColumnWidget::setShowPreview(bool show)
 171 {
 172     if (show != m_showPreview) {
 173         m_dirLister->stop();
 174         m_dirLister->openUrl(m_url, KDirLister::Reload);
 175     }
 176 }
 177
 178 void DolphinColumnWidget::updateBackground()
 179 {
 180     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 181     if (!m_active || !m_view->m_active) {
 182         color.setAlpha(150);
 183     }
 184     QPalette palette = viewport()->palette();
 185     palette.setColor(viewport()->backgroundRole(), color);
 186     viewport()->setPalette(palette);
 187
 188     update();
 189 }
 190
 191 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 192 {
 193     m_proxyModel->setFilterRegExp(nameFilter);
 194 }
 195
 196
 197 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 198 {
 199     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 200     viewOptions.font = m_font;
 201     viewOptions.decorationSize = m_decorationSize;
 202     viewOptions.showDecorationSelected = true;
 203     return viewOptions;
 204 }
 205
 206 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 207 {
 208     DragAndDropHelper::startDrag(this, supportedActions);
 209 }
 210
 211 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 212 {
 213     if (event->mimeData()->hasUrls()) {
 214         event->acceptProposedAction();
 215     }
 216
 217     m_dragging = true;
 218 }
 219
 220 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 221 {
 222     QListView::dragLeaveEvent(event);
 223
 224     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 225     m_dragging = false;
 226     setDirtyRegion(m_dropRect);
 227 }
 228
 229 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 230 {
 231     QListView::dragMoveEvent(event);
 232
 233     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 234     const QModelIndex index = indexAt(event->pos());
 235     setDirtyRegion(m_dropRect);
 236
 237     m_dropRect.setSize(QSize()); // set as invalid
 238     if (index.isValid()) {
 239         const KFileItem item = itemForIndex(index);
 240         if (!item.isNull() && item.isDir()) {
 241             m_dropRect = visualRect(index);
 242         }
 243     }
 244     setDirtyRegion(m_dropRect);
 245 }
 246
 247 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 248 {
 249     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 250     if (!urls.isEmpty()) {
 251         const QModelIndex index = indexAt(event->pos());
 252         const KFileItem item = itemForIndex(index);
 253         m_view->m_controller->indicateDroppedUrls(urls,
 254                                                   url(),
 255                                                   item);
 256         event->acceptProposedAction();
 257     }
 258     QListView::dropEvent(event);
 259     m_dragging = false;
 260 }
 261
 262 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 263 {
 264     if (!m_childUrl.isEmpty()) {
 265         // indicate the shown URL of the next column by highlighting the shown folder item
 266         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 267         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 268         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 269             const QRect itemRect = visualRect(proxyIndex);
 270             QPainter painter(viewport());
 271             painter.save();
 272
 273             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 274             color.setAlpha(32);
 275             painter.setPen(Qt::NoPen);
 276             painter.setBrush(color);
 277             painter.drawRect(itemRect);
 278
 279             painter.restore();
 280         }
 281     }
 282
 283     QListView::paintEvent(event);
 284
 285     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 286     if (m_dragging) {
 287         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 288         DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
 289     }
 290 }
 291
 292 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 293 {
 294     m_view->m_controller->requestActivation();
 295     if (!m_active) {
 296         m_view->requestActivation(this);
 297         m_view->m_controller->triggerUrlChangeRequest(m_url);
 298     }
 299
 300     QListView::mousePressEvent(event);
 301 }
 302
 303 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 304 {
 305     QListView::keyPressEvent(event);
 306
 307     const QItemSelectionModel* selModel = selectionModel();
 308     const QModelIndex currentIndex = selModel->currentIndex();
 309     const bool trigger = currentIndex.isValid()
 310                          && (event->key() == Qt::Key_Return)
 311                          && (selModel->selectedIndexes().count() <= 1);
 312     if (trigger) {
 313         triggerItem(currentIndex);
 314     }
 315 }
 316
 317 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 318 {
 319     if (!m_active) {
 320         m_view->requestActivation(this);
 321         m_view->m_controller->triggerUrlChangeRequest(m_url);
 322     }
 323
 324     QListView::contextMenuEvent(event);
 325
 326     const QModelIndex index = indexAt(event->pos());
 327     if (index.isValid() || m_active) {
 328         // Only open a context menu above an item or if the mouse is above
 329         // the active column.
 330         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 331         m_view->m_controller->triggerContextMenuRequest(pos);
 332     }
 333 }
 334
 335 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 336 {
 337     QListView::selectionChanged(selected, deselected);
 338
 339     QItemSelectionModel* selModel = m_view->selectionModel();
 340     selModel->select(selected, QItemSelectionModel::Select);
 341     selModel->select(deselected, QItemSelectionModel::Deselect);
 342 }
 343
 344 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 345 {
 346     const KFileItem item = itemForIndex(index);
 347     m_view->m_controller->triggerItem(item);
 348 }
 349
 350 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 351 {
 352     // TODO: same implementation as in DolphinView; create helper class
 353     // for generatePreviews(), showPreview() and isCutItem()
 354
 355     if (m_view->m_controller->dolphinView()->showPreview()) {
 356         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 357         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 358                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 359     }
 360 }
 361
 362 void DolphinColumnWidget::showPreview(const KFileItem& item, const QPixmap& pixmap)
 363 {
 364     // TODO: same implementation as in DolphinView; create helper class
 365     // for generatePreviews(), showPreview() and isCutItem()
 366
 367     Q_ASSERT(!item.isNull());
 368     if (item.url().directory() != m_dirLister->url().path()) {
 369         // the preview job is still working on items of an older URL, hence
 370         // the item is not part of the directory model anymore
 371         return;
 372     }
 373
 374     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 375     if (idx.isValid() && (idx.column() == 0)) {
 376         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 377         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 378             KIconEffect iconEffect;
 379             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 380             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 381         } else {
 382             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 383         }
 384     }
 385 }
 386
 387 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 388 {
 389     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 390     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 391     m_view->m_controller->emitItemEntered(item);
 392 }
 393
 394 void DolphinColumnWidget::activate()
 395 {
 396     setFocus(Qt::OtherFocusReason);
 397
 398     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 399     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 400     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 401     if (KGlobalSettings::singleClick()) {
 402         connect(this, SIGNAL(clicked(const QModelIndex&)),
 403                 this, SLOT(triggerItem(const QModelIndex&)));
 404     } else {
 405         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 406                 this, SLOT(triggerItem(const QModelIndex&)));
 407     }
 408
 409     if (!m_childUrl.isEmpty()) {
 410         // assure that the current index is set on the index that represents
 411         // the child URL
 412         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 413         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 414         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 415     }
 416
 417     updateBackground();
 418 }
 419
 420 void DolphinColumnWidget::deactivate()
 421 {
 422     clearFocus();
 423
 424     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 425     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 426     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 427     if (KGlobalSettings::singleClick()) {
 428         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 429                    this, SLOT(triggerItem(const QModelIndex&)));
 430     } else {
 431         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 432                    this, SLOT(triggerItem(const QModelIndex&)));
 433     }
 434
 435     selectionModel()->clear();
 436     updateBackground();
 437 }
 438
 439 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 440 {
 441     // TODO: same implementation as in DolphinView; create helper class
 442     // for generatePreviews(), showPreview() and isCutItem()
 443
 444     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 445     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 446
 447     const KUrl& itemUrl = item.url();
 448     KUrl::List::const_iterator it = cutUrls.begin();
 449     const KUrl::List::const_iterator end = cutUrls.end();
 450     while (it != end) {
 451         if (*it == itemUrl) {
 452             return true;
 453         }
 454         ++it;
 455     }
 456
 457     return false;
 458 }
 459
 460 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 461 {
 462     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 463     return m_dolphinModel->itemForIndex(dirIndex);
 464 }
 465
 466
 467 #include "dolphincolumnwidget.moc"