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     setSelectionRectVisible(true);
  72
  73 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  74 //       check avoids a division by zero happening on versions before 4.3.1.
  75 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  76 //       ereslibre
  77 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  78     setVerticalScrollMode(QListView::ScrollPerPixel);
  79     setHorizontalScrollMode(QListView::ScrollPerPixel);
  80 #endif
  81
  82     // apply the column mode settings to the widget
  83     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  84     Q_ASSERT(settings != 0);
  85
  86     m_font = QFont(settings->fontFamily(), settings->fontSize());
  87     m_font.setItalic(settings->italicFont());
  88     m_font.setBold(settings->boldFont());
  89
  90     const int iconSize = settings->iconSize();
  91     m_decorationSize = 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(this);
 107     m_dirLister->setDelayedMimeTypes(true);
 108     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 109     m_dirLister->setShowingDotFiles(showHiddenFiles);
 110     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 111             this, SLOT(generatePreviews(const KFileItemList&)));
 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
 120     setModel(m_proxyModel);
 121     new KMimeTypeResolver(this, m_dolphinModel);
 122
 123     m_dirLister->openUrl(url, KDirLister::NoFlags);
 124 }
 125
 126 DolphinColumnWidget::~DolphinColumnWidget()
 127 {
 128     delete m_proxyModel;
 129     m_proxyModel = 0;
 130     delete m_dolphinModel;
 131     m_dolphinModel = 0;
 132     m_dirLister = 0; // deleted by m_dolphinModel
 133
 134     if (m_previewJob != 0) {
 135         m_previewJob->kill();
 136         m_previewJob = 0;
 137     }
 138 }
 139
 140 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 141 {
 142     m_decorationSize = size;
 143     doItemsLayout();
 144 }
 145
 146 void DolphinColumnWidget::setActive(bool active)
 147 {
 148     if (m_active == active) {
 149         return;
 150     }
 151
 152     m_active = active;
 153
 154     if (active) {
 155         activate();
 156     } else {
 157         deactivate();
 158     }
 159 }
 160
 161 void DolphinColumnWidget::reload()
 162 {
 163     m_dirLister->stop();
 164     m_dirLister->openUrl(m_url, KDirLister::Reload);
 165 }
 166
 167 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 168 {
 169     if (show != m_dirLister->showingDotFiles()) {
 170         m_dirLister->setShowingDotFiles(show);
 171         m_dirLister->stop();
 172         m_dirLister->openUrl(m_url, KDirLister::Reload);
 173     }
 174 }
 175
 176 void DolphinColumnWidget::setShowPreview(bool show)
 177 {
 178     if (show != m_showPreview) {
 179         m_dirLister->stop();
 180         m_dirLister->openUrl(m_url, KDirLister::Reload);
 181     }
 182 }
 183
 184 void DolphinColumnWidget::updateBackground()
 185 {
 186     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 187     if (!m_active || !m_view->m_active) {
 188         color.setAlpha(150);
 189     }
 190     QPalette palette = viewport()->palette();
 191     palette.setColor(viewport()->backgroundRole(), color);
 192     viewport()->setPalette(palette);
 193
 194     update();
 195 }
 196
 197 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 198 {
 199     m_proxyModel->setFilterRegExp(nameFilter);
 200 }
 201
 202
 203 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 204 {
 205     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 206     viewOptions.font = m_font;
 207     viewOptions.decorationSize = m_decorationSize;
 208     viewOptions.showDecorationSelected = true;
 209     return viewOptions;
 210 }
 211
 212 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 213 {
 214     DragAndDropHelper::startDrag(this, supportedActions);
 215 }
 216
 217 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 218 {
 219     if (event->mimeData()->hasUrls()) {
 220         event->acceptProposedAction();
 221     }
 222
 223     m_dragging = true;
 224 }
 225
 226 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 227 {
 228     QListView::dragLeaveEvent(event);
 229
 230     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 231     m_dragging = false;
 232     setDirtyRegion(m_dropRect);
 233 }
 234
 235 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 236 {
 237     QListView::dragMoveEvent(event);
 238
 239     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 240     const QModelIndex index = indexAt(event->pos());
 241     setDirtyRegion(m_dropRect);
 242
 243     m_dropRect.setSize(QSize()); // set as invalid
 244     if (index.isValid()) {
 245         const KFileItem item = itemForIndex(index);
 246         if (!item.isNull() && item.isDir()) {
 247             m_dropRect = visualRect(index);
 248         }
 249     }
 250     setDirtyRegion(m_dropRect);
 251
 252     if (event->mimeData()->hasUrls()) {
 253         // accept url drops, independently from the destination item
 254         event->acceptProposedAction();
 255     }
 256 }
 257
 258 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 259 {
 260     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 261     if (!urls.isEmpty()) {
 262         const QModelIndex index = indexAt(event->pos());
 263         const KFileItem item = itemForIndex(index);
 264         m_view->m_controller->indicateDroppedUrls(urls,
 265                                                   url(),
 266                                                   item);
 267         event->acceptProposedAction();
 268     }
 269     QListView::dropEvent(event);
 270     m_dragging = false;
 271 }
 272
 273 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 274 {
 275     if (!m_childUrl.isEmpty()) {
 276         // indicate the shown URL of the next column by highlighting the shown folder item
 277         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 278         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 279         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 280             const QRect itemRect = visualRect(proxyIndex);
 281             QPainter painter(viewport());
 282             painter.save();
 283
 284             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 285             color.setAlpha(32);
 286             painter.setPen(Qt::NoPen);
 287             painter.setBrush(color);
 288             painter.drawRect(itemRect);
 289
 290             painter.restore();
 291         }
 292     }
 293
 294     QListView::paintEvent(event);
 295
 296     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 297     if (m_dragging) {
 298         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 299         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 300     }
 301 }
 302
 303 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 304 {
 305     m_view->m_controller->requestActivation();
 306     if (!m_active) {
 307         m_view->requestActivation(this);
 308         m_view->m_controller->triggerUrlChangeRequest(m_url);
 309     }
 310
 311     QListView::mousePressEvent(event);
 312 }
 313
 314 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 315 {
 316     QListView::keyPressEvent(event);
 317
 318     const QItemSelectionModel* selModel = selectionModel();
 319     const QModelIndex currentIndex = selModel->currentIndex();
 320     const bool trigger = currentIndex.isValid()
 321                          && (event->key() == Qt::Key_Return)
 322                          && (selModel->selectedIndexes().count() <= 1);
 323     if (trigger) {
 324         triggerItem(currentIndex);
 325     }
 326 }
 327
 328 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 329 {
 330     if (!m_active) {
 331         m_view->requestActivation(this);
 332         m_view->m_controller->triggerUrlChangeRequest(m_url);
 333     }
 334
 335     QListView::contextMenuEvent(event);
 336
 337     const QModelIndex index = indexAt(event->pos());
 338     if (index.isValid() || m_active) {
 339         // Only open a context menu above an item or if the mouse is above
 340         // the active column.
 341         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 342         m_view->m_controller->triggerContextMenuRequest(pos);
 343     }
 344 }
 345
 346 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 347 {
 348     QListView::selectionChanged(selected, deselected);
 349
 350     QItemSelectionModel* selModel = m_view->selectionModel();
 351     selModel->select(selected, QItemSelectionModel::Select);
 352     selModel->select(deselected, QItemSelectionModel::Deselect);
 353 }
 354
 355 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 356 {
 357     const KFileItem item = itemForIndex(index);
 358     m_view->m_controller->triggerItem(item);
 359 }
 360
 361 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 362 {
 363     // TODO: same implementation as in DolphinView; create helper class
 364     // for generatePreviews(), showPreview() and isCutItem()
 365
 366     if (m_view->m_controller->dolphinView()->showPreview()) {
 367         if (m_previewJob != 0) {
 368             m_previewJob->kill();
 369             m_previewJob = 0;
 370         }
 371
 372         m_previewJob = KIO::filePreview(items, 128);
 373         connect(m_previewJob, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 374                 this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
 375         connect(m_previewJob, SIGNAL(finished(KJob*)),
 376                 this, SLOT(slotPreviewJobFinished(KJob*)));
 377     }
 378 }
 379
 380 void DolphinColumnWidget::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
 381 {
 382     // TODO: same implementation as in DolphinView; create helper class
 383     // for generatePreviews(), showPreview() and isCutItem()
 384
 385     Q_ASSERT(!item.isNull());
 386     const bool showPreview = m_view->m_controller->dolphinView()->showPreview();
 387     if (!showPreview || (item.url().directory() != m_dirLister->url().path())) {
 388         // the preview job is still working on items of an older URL, hence
 389         // the item is not part of the directory model anymore
 390         return;
 391     }
 392
 393     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 394     if (idx.isValid() && (idx.column() == 0)) {
 395         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 396         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 397             KIconEffect iconEffect;
 398             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 399             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 400         } else {
 401             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 402         }
 403     }
 404 }
 405
 406 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 407 {
 408     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 409     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 410     m_view->m_controller->emitItemEntered(item);
 411 }
 412
 413 void DolphinColumnWidget::slotPreviewJobFinished(KJob* job)
 414 {
 415     Q_ASSERT(job == m_previewJob);
 416     m_previewJob = 0;
 417 }
 418
 419 void DolphinColumnWidget::activate()
 420 {
 421     setFocus(Qt::OtherFocusReason);
 422
 423     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 424     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 425     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 426     if (KGlobalSettings::singleClick()) {
 427         connect(this, SIGNAL(clicked(const QModelIndex&)),
 428                 this, SLOT(triggerItem(const QModelIndex&)));
 429     } else {
 430         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 431                 this, SLOT(triggerItem(const QModelIndex&)));
 432     }
 433
 434     if (!m_childUrl.isEmpty()) {
 435         // assure that the current index is set on the index that represents
 436         // the child URL
 437         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 438         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 439         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 440     }
 441
 442     updateBackground();
 443 }
 444
 445 void DolphinColumnWidget::deactivate()
 446 {
 447     clearFocus();
 448
 449     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 450     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 451     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 452     if (KGlobalSettings::singleClick()) {
 453         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 454                    this, SLOT(triggerItem(const QModelIndex&)));
 455     } else {
 456         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 457                    this, SLOT(triggerItem(const QModelIndex&)));
 458     }
 459
 460     selectionModel()->clear();
 461     updateBackground();
 462 }
 463
 464 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 465 {
 466     // TODO: same implementation as in DolphinView; create helper class
 467     // for generatePreviews(), showPreview() and isCutItem()
 468
 469     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 470     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 471
 472     const KUrl& itemUrl = item.url();
 473     KUrl::List::const_iterator it = cutUrls.begin();
 474     const KUrl::List::const_iterator end = cutUrls.end();
 475     while (it != end) {
 476         if (*it == itemUrl) {
 477             return true;
 478         }
 479         ++it;
 480     }
 481
 482     return false;
 483 }
 484
 485 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 486 {
 487     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 488     return m_dolphinModel->itemForIndex(dirIndex);
 489 }
 490
 491
 492 #include "dolphincolumnwidget.moc"