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 "draganddrophelper.h"
  30
  31 #include <kcolorscheme.h>
  32 #include <kdirlister.h>
  33 #include <kfileitem.h>
  34 #include <kio/previewjob.h>
  35 #include <kiconeffect.h>
  36 #include <kjob.h>
  37 #include <kmimetyperesolver.h>
  38 #include <konqmimedata.h>
  39
  40 #include <QApplication>
  41 #include <QClipboard>
  42 #include <QPainter>
  43 #include <QPoint>
  44
  45 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  46                                          DolphinColumnView* columnView,
  47                                          const KUrl& url) :
  48     QListView(parent),
  49     m_active(true),
  50     m_showPreview(false),
  51     m_view(columnView),
  52     m_url(url),
  53     m_childUrl(),
  54     m_font(),
  55     m_decorationSize(),
  56     m_dirLister(0),
  57     m_dolphinModel(0),
  58     m_proxyModel(0),
  59     m_previewJob(0),
  60     m_dragging(false),
  61     m_dropRect()
  62 {
  63     setMouseTracking(true);
  64     viewport()->setAttribute(Qt::WA_Hover);
  65     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  66     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  67     setSelectionBehavior(SelectItems);
  68     setSelectionMode(QAbstractItemView::ExtendedSelection);
  69     setDragDropMode(QAbstractItemView::DragDrop);
  70     setDropIndicatorShown(false);
  71
  72 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  73 //       check avoids a division by zero happening on versions before 4.3.1.
  74 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  75 //       ereslibre
  76 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  77     setVerticalScrollMode(QListView::ScrollPerPixel);
  78     setHorizontalScrollMode(QListView::ScrollPerPixel);
  79 #endif
  80
  81     // apply the column mode settings to the widget
  82     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  83     Q_ASSERT(settings != 0);
  84
  85     m_font = QFont(settings->fontFamily(), settings->fontSize());
  86     m_font.setItalic(settings->italicFont());
  87     m_font.setBold(settings->boldFont());
  88
  89     const int iconSize = settings->iconSize();
  90     m_decorationSize = QSize(iconSize, iconSize);
  91
  92     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  93     setItemDelegate(delegate);
  94
  95     activate();
  96
  97     connect(this, SIGNAL(viewportEntered()),
  98             m_view->m_controller, SLOT(emitViewportEntered()));
  99     connect(this, SIGNAL(entered(const QModelIndex&)),
 100             this, SLOT(slotEntered(const QModelIndex&)));
 101
 102     //m_dirLister = new DolphinDirLister(); TODO
 103     m_dirLister = new KDirLister();
 104     m_dirLister->setAutoUpdate(true);
 105     m_dirLister->setMainWindow(this);
 106     m_dirLister->setDelayedMimeTypes(true);
 107     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 108     m_dirLister->setShowingDotFiles(showHiddenFiles);
 109     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 110             this, SLOT(generatePreviews(const KFileItemList&)));
 111
 112     m_dolphinModel = new DolphinModel(this);
 113     m_dolphinModel->setDirLister(m_dirLister);
 114     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 115
 116     m_proxyModel = new DolphinSortFilterProxyModel(this);
 117     m_proxyModel->setSourceModel(m_dolphinModel);
 118
 119     setModel(m_proxyModel);
 120     new KMimeTypeResolver(this, m_dolphinModel);
 121
 122     m_dirLister->openUrl(url, KDirLister::NoFlags);
 123 }
 124
 125 DolphinColumnWidget::~DolphinColumnWidget()
 126 {
 127     delete m_proxyModel;
 128     m_proxyModel = 0;
 129     delete m_dolphinModel;
 130     m_dolphinModel = 0;
 131     m_dirLister = 0; // deleted by m_dolphinModel
 132
 133     if (m_previewJob != 0) {
 134         m_previewJob->kill();
 135         m_previewJob = 0;
 136     }
 137 }
 138
 139 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 140 {
 141     m_decorationSize = size;
 142     doItemsLayout();
 143 }
 144
 145 void DolphinColumnWidget::setActive(bool active)
 146 {
 147     if (m_active == active) {
 148         return;
 149     }
 150
 151     m_active = active;
 152
 153     if (active) {
 154         activate();
 155     } else {
 156         deactivate();
 157     }
 158 }
 159
 160 void DolphinColumnWidget::reload()
 161 {
 162     m_dirLister->stop();
 163     m_dirLister->openUrl(m_url, KDirLister::Reload);
 164 }
 165
 166 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 167 {
 168     if (show != m_dirLister->showingDotFiles()) {
 169         m_dirLister->setShowingDotFiles(show);
 170         m_dirLister->stop();
 171         m_dirLister->openUrl(m_url, KDirLister::Reload);
 172     }
 173 }
 174
 175 void DolphinColumnWidget::setShowPreview(bool show)
 176 {
 177     if (show != m_showPreview) {
 178         m_dirLister->stop();
 179         m_dirLister->openUrl(m_url, KDirLister::Reload);
 180     }
 181 }
 182
 183 void DolphinColumnWidget::updateBackground()
 184 {
 185     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 186     if (!m_active || !m_view->m_active) {
 187         color.setAlpha(150);
 188     }
 189     QPalette palette = viewport()->palette();
 190     palette.setColor(viewport()->backgroundRole(), color);
 191     viewport()->setPalette(palette);
 192
 193     update();
 194 }
 195
 196 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 197 {
 198     m_proxyModel->setFilterRegExp(nameFilter);
 199 }
 200
 201
 202 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 203 {
 204     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 205     viewOptions.font = m_font;
 206     viewOptions.decorationSize = m_decorationSize;
 207     viewOptions.showDecorationSelected = true;
 208     return viewOptions;
 209 }
 210
 211 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 212 {
 213     DragAndDropHelper::startDrag(this, supportedActions);
 214 }
 215
 216 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 217 {
 218     if (event->mimeData()->hasUrls()) {
 219         event->acceptProposedAction();
 220     }
 221
 222     m_dragging = true;
 223 }
 224
 225 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 226 {
 227     QListView::dragLeaveEvent(event);
 228
 229     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 230     m_dragging = false;
 231     setDirtyRegion(m_dropRect);
 232 }
 233
 234 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 235 {
 236     QListView::dragMoveEvent(event);
 237
 238     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 239     const QModelIndex index = indexAt(event->pos());
 240     setDirtyRegion(m_dropRect);
 241
 242     m_dropRect.setSize(QSize()); // set as invalid
 243     if (index.isValid()) {
 244         const KFileItem item = itemForIndex(index);
 245         if (!item.isNull() && item.isDir()) {
 246             m_dropRect = visualRect(index);
 247         }
 248     }
 249     setDirtyRegion(m_dropRect);
 250 }
 251
 252 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 253 {
 254     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 255     if (!urls.isEmpty()) {
 256         const QModelIndex index = indexAt(event->pos());
 257         const KFileItem item = itemForIndex(index);
 258         m_view->m_controller->indicateDroppedUrls(urls,
 259                                                   url(),
 260                                                   item);
 261         event->acceptProposedAction();
 262     }
 263     QListView::dropEvent(event);
 264     m_dragging = false;
 265 }
 266
 267 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 268 {
 269     if (!m_childUrl.isEmpty()) {
 270         // indicate the shown URL of the next column by highlighting the shown folder item
 271         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 272         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 273         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 274             const QRect itemRect = visualRect(proxyIndex);
 275             QPainter painter(viewport());
 276             painter.save();
 277
 278             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 279             color.setAlpha(32);
 280             painter.setPen(Qt::NoPen);
 281             painter.setBrush(color);
 282             painter.drawRect(itemRect);
 283
 284             painter.restore();
 285         }
 286     }
 287
 288     QListView::paintEvent(event);
 289
 290     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 291     if (m_dragging) {
 292         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 293         DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
 294     }
 295 }
 296
 297 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 298 {
 299     m_view->m_controller->requestActivation();
 300     if (!m_active) {
 301         m_view->requestActivation(this);
 302         m_view->m_controller->triggerUrlChangeRequest(m_url);
 303     }
 304
 305     QListView::mousePressEvent(event);
 306 }
 307
 308 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 309 {
 310     QListView::keyPressEvent(event);
 311
 312     const QItemSelectionModel* selModel = selectionModel();
 313     const QModelIndex currentIndex = selModel->currentIndex();
 314     const bool trigger = currentIndex.isValid()
 315                          && (event->key() == Qt::Key_Return)
 316                          && (selModel->selectedIndexes().count() <= 1);
 317     if (trigger) {
 318         triggerItem(currentIndex);
 319     }
 320 }
 321
 322 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 323 {
 324     if (!m_active) {
 325         m_view->requestActivation(this);
 326         m_view->m_controller->triggerUrlChangeRequest(m_url);
 327     }
 328
 329     QListView::contextMenuEvent(event);
 330
 331     const QModelIndex index = indexAt(event->pos());
 332     if (index.isValid() || m_active) {
 333         // Only open a context menu above an item or if the mouse is above
 334         // the active column.
 335         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 336         m_view->m_controller->triggerContextMenuRequest(pos);
 337     }
 338 }
 339
 340 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 341 {
 342     QListView::selectionChanged(selected, deselected);
 343
 344     QItemSelectionModel* selModel = m_view->selectionModel();
 345     selModel->select(selected, QItemSelectionModel::Select);
 346     selModel->select(deselected, QItemSelectionModel::Deselect);
 347 }
 348
 349 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 350 {
 351     const KFileItem item = itemForIndex(index);
 352     m_view->m_controller->triggerItem(item);
 353 }
 354
 355 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 356 {
 357     // TODO: same implementation as in DolphinView; create helper class
 358     // for generatePreviews(), showPreview() and isCutItem()
 359
 360     if (m_view->m_controller->dolphinView()->showPreview()) {
 361         if (m_previewJob != 0) {
 362             m_previewJob->kill();
 363             m_previewJob = 0;
 364         }
 365
 366         m_previewJob = KIO::filePreview(items, 128);
 367         connect(m_previewJob, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 368                 this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
 369         connect(m_previewJob, SIGNAL(finished(KJob*)),
 370                 this, SLOT(slotPreviewJobFinished(KJob*)));
 371     }
 372 }
 373
 374 void DolphinColumnWidget::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
 375 {
 376     // TODO: same implementation as in DolphinView; create helper class
 377     // for generatePreviews(), showPreview() and isCutItem()
 378
 379     Q_ASSERT(!item.isNull());
 380     const bool showPreview = m_view->m_controller->dolphinView()->showPreview();
 381     if (!showPreview || (item.url().directory() != m_dirLister->url().path())) {
 382         // the preview job is still working on items of an older URL, hence
 383         // the item is not part of the directory model anymore
 384         return;
 385     }
 386
 387     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 388     if (idx.isValid() && (idx.column() == 0)) {
 389         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 390         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 391             KIconEffect iconEffect;
 392             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 393             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 394         } else {
 395             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 396         }
 397     }
 398 }
 399
 400 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 401 {
 402     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 403     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 404     m_view->m_controller->emitItemEntered(item);
 405 }
 406
 407 void DolphinColumnWidget::slotPreviewJobFinished(KJob* job)
 408 {
 409     Q_ASSERT(job == m_previewJob);
 410     m_previewJob = 0;
 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                 this, SLOT(triggerItem(const QModelIndex&)));
 423     } else {
 424         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 425                 this, SLOT(triggerItem(const QModelIndex&)));
 426     }
 427
 428     if (!m_childUrl.isEmpty()) {
 429         // assure that the current index is set on the index that represents
 430         // the child URL
 431         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 432         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 433         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 434     }
 435
 436     updateBackground();
 437 }
 438
 439 void DolphinColumnWidget::deactivate()
 440 {
 441     clearFocus();
 442
 443     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 444     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 445     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 446     if (KGlobalSettings::singleClick()) {
 447         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 448                    this, SLOT(triggerItem(const QModelIndex&)));
 449     } else {
 450         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 451                    this, SLOT(triggerItem(const QModelIndex&)));
 452     }
 453
 454     selectionModel()->clear();
 455     updateBackground();
 456 }
 457
 458 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 459 {
 460     // TODO: same implementation as in DolphinView; create helper class
 461     // for generatePreviews(), showPreview() and isCutItem()
 462
 463     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 464     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 465
 466     const KUrl& itemUrl = item.url();
 467     KUrl::List::const_iterator it = cutUrls.begin();
 468     const KUrl::List::const_iterator end = cutUrls.end();
 469     while (it != end) {
 470         if (*it == itemUrl) {
 471             return true;
 472         }
 473         ++it;
 474     }
 475
 476     return false;
 477 }
 478
 479 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 480 {
 481     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 482     return m_dolphinModel->itemForIndex(dirIndex);
 483 }
 484
 485
 486 #include "dolphincolumnwidget.moc"