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     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 120
 121     setModel(m_proxyModel);
 122     new KMimeTypeResolver(this, m_dolphinModel);
 123
 124     m_dirLister->openUrl(url, KDirLister::NoFlags);
 125 }
 126
 127 DolphinColumnWidget::~DolphinColumnWidget()
 128 {
 129     delete m_proxyModel;
 130     m_proxyModel = 0;
 131     delete m_dolphinModel;
 132     m_dolphinModel = 0;
 133     m_dirLister = 0; // deleted by m_dolphinModel
 134
 135     if (m_previewJob != 0) {
 136         m_previewJob->kill();
 137         m_previewJob = 0;
 138     }
 139 }
 140
 141 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 142 {
 143     m_decorationSize = size;
 144     doItemsLayout();
 145 }
 146
 147 void DolphinColumnWidget::setActive(bool active)
 148 {
 149     if (m_active == active) {
 150         return;
 151     }
 152
 153     m_active = active;
 154
 155     if (active) {
 156         activate();
 157     } else {
 158         deactivate();
 159     }
 160 }
 161
 162 void DolphinColumnWidget::reload()
 163 {
 164     m_dirLister->stop();
 165     m_dirLister->openUrl(m_url, KDirLister::Reload);
 166 }
 167
 168 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 169 {
 170     if (show != m_dirLister->showingDotFiles()) {
 171         m_dirLister->setShowingDotFiles(show);
 172         m_dirLister->stop();
 173         m_dirLister->openUrl(m_url, KDirLister::Reload);
 174     }
 175 }
 176
 177 void DolphinColumnWidget::setShowPreview(bool show)
 178 {
 179     if (show != m_showPreview) {
 180         m_dirLister->stop();
 181         m_dirLister->openUrl(m_url, KDirLister::Reload);
 182     }
 183 }
 184
 185 void DolphinColumnWidget::updateBackground()
 186 {
 187     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 188     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 189     // DolphinView a common helper-class should be available which can be shared
 190     // by all view implementations -> no hardcoded value anymore
 191     const QPalette::ColorRole role = viewport()->backgroundRole();
 192     QColor color = viewport()->palette().color(role);
 193     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 194
 195     QPalette palette = viewport()->palette();
 196     palette.setColor(role, color);
 197     viewport()->setPalette(palette);
 198
 199     update();
 200 }
 201
 202 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 203 {
 204     m_proxyModel->setFilterRegExp(nameFilter);
 205 }
 206
 207
 208 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 209 {
 210     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 211     viewOptions.font = m_font;
 212     viewOptions.decorationSize = m_decorationSize;
 213     viewOptions.showDecorationSelected = true;
 214     return viewOptions;
 215 }
 216
 217 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 218 {
 219     DragAndDropHelper::startDrag(this, supportedActions);
 220 }
 221
 222 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 223 {
 224     if (event->mimeData()->hasUrls()) {
 225         event->acceptProposedAction();
 226     }
 227
 228     m_dragging = true;
 229 }
 230
 231 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 232 {
 233     QListView::dragLeaveEvent(event);
 234
 235     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 236     m_dragging = false;
 237     setDirtyRegion(m_dropRect);
 238 }
 239
 240 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 241 {
 242     QListView::dragMoveEvent(event);
 243
 244     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 245     const QModelIndex index = indexAt(event->pos());
 246     setDirtyRegion(m_dropRect);
 247
 248     m_dropRect.setSize(QSize()); // set as invalid
 249     if (index.isValid()) {
 250         const KFileItem item = itemForIndex(index);
 251         if (!item.isNull() && item.isDir()) {
 252             m_dropRect = visualRect(index);
 253         }
 254     }
 255     setDirtyRegion(m_dropRect);
 256
 257     if (event->mimeData()->hasUrls()) {
 258         // accept url drops, independently from the destination item
 259         event->acceptProposedAction();
 260     }
 261 }
 262
 263 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 264 {
 265     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 266     if (!urls.isEmpty()) {
 267         const QModelIndex index = indexAt(event->pos());
 268         const KFileItem item = itemForIndex(index);
 269         m_view->m_controller->indicateDroppedUrls(urls,
 270                                                   url(),
 271                                                   item);
 272         event->acceptProposedAction();
 273     }
 274     QListView::dropEvent(event);
 275     m_dragging = false;
 276 }
 277
 278 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 279 {
 280     if (!m_childUrl.isEmpty()) {
 281         // indicate the shown URL of the next column by highlighting the shown folder item
 282         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 283         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 284         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 285             const QRect itemRect = visualRect(proxyIndex);
 286             QPainter painter(viewport());
 287             painter.save();
 288
 289             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 290             color.setAlpha(32);
 291             painter.setPen(Qt::NoPen);
 292             painter.setBrush(color);
 293             painter.drawRect(itemRect);
 294
 295             painter.restore();
 296         }
 297     }
 298
 299     QListView::paintEvent(event);
 300
 301     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 302     if (m_dragging) {
 303         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 304         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 305     }
 306 }
 307
 308 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 309 {
 310     m_view->m_controller->requestActivation();
 311     if (!m_active) {
 312         m_view->requestActivation(this);
 313         m_view->m_controller->triggerUrlChangeRequest(m_url);
 314     }
 315
 316     QListView::mousePressEvent(event);
 317 }
 318
 319 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 320 {
 321     QListView::keyPressEvent(event);
 322
 323     const QItemSelectionModel* selModel = selectionModel();
 324     const QModelIndex currentIndex = selModel->currentIndex();
 325     const bool trigger = currentIndex.isValid()
 326                          && (event->key() == Qt::Key_Return)
 327                          && (selModel->selectedIndexes().count() <= 1);
 328     if (trigger) {
 329         triggerItem(currentIndex);
 330     }
 331 }
 332
 333 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 334 {
 335     if (!m_active) {
 336         m_view->requestActivation(this);
 337         m_view->m_controller->triggerUrlChangeRequest(m_url);
 338     }
 339
 340     QListView::contextMenuEvent(event);
 341
 342     const QModelIndex index = indexAt(event->pos());
 343     if (index.isValid() || m_active) {
 344         // Only open a context menu above an item or if the mouse is above
 345         // the active column.
 346         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 347         m_view->m_controller->triggerContextMenuRequest(pos);
 348     }
 349 }
 350
 351 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 352 {
 353     QListView::selectionChanged(selected, deselected);
 354
 355     QItemSelectionModel* selModel = m_view->selectionModel();
 356     selModel->select(selected, QItemSelectionModel::Select);
 357     selModel->select(deselected, QItemSelectionModel::Deselect);
 358 }
 359
 360 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 361 {
 362     const KFileItem item = itemForIndex(index);
 363     m_view->m_controller->triggerItem(item);
 364 }
 365
 366 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 367 {
 368     // TODO: same implementation as in DolphinView; create helper class
 369     // for generatePreviews(), showPreview() and isCutItem()
 370
 371     if (m_view->m_controller->dolphinView()->showPreview()) {
 372         if (m_previewJob != 0) {
 373             m_previewJob->kill();
 374             m_previewJob = 0;
 375         }
 376
 377         m_previewJob = KIO::filePreview(items, 128);
 378         connect(m_previewJob, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 379                 this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
 380         connect(m_previewJob, SIGNAL(finished(KJob*)),
 381                 this, SLOT(slotPreviewJobFinished(KJob*)));
 382     }
 383 }
 384
 385 void DolphinColumnWidget::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
 386 {
 387     // TODO: same implementation as in DolphinView; create helper class
 388     // for generatePreviews(), showPreview() and isCutItem()
 389
 390     Q_ASSERT(!item.isNull());
 391     const bool showPreview = m_view->m_controller->dolphinView()->showPreview();
 392     if (!showPreview || (item.url().directory() != m_dirLister->url().path())) {
 393         // the preview job is still working on items of an older URL, hence
 394         // the item is not part of the directory model anymore
 395         return;
 396     }
 397
 398     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 399     if (idx.isValid() && (idx.column() == 0)) {
 400         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 401         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 402             KIconEffect iconEffect;
 403             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 404             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 405         } else {
 406             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 407         }
 408     }
 409 }
 410
 411 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 412 {
 413     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 414     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 415     m_view->m_controller->emitItemEntered(item);
 416 }
 417
 418 void DolphinColumnWidget::slotPreviewJobFinished(KJob* job)
 419 {
 420     Q_ASSERT(job == m_previewJob);
 421     m_previewJob = 0;
 422 }
 423
 424 void DolphinColumnWidget::activate()
 425 {
 426     setFocus(Qt::OtherFocusReason);
 427
 428     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 429     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 430     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 431     if (KGlobalSettings::singleClick()) {
 432         connect(this, SIGNAL(clicked(const QModelIndex&)),
 433                 this, SLOT(triggerItem(const QModelIndex&)));
 434     } else {
 435         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 436                 this, SLOT(triggerItem(const QModelIndex&)));
 437     }
 438
 439     if (!m_childUrl.isEmpty()) {
 440         // assure that the current index is set on the index that represents
 441         // the child URL
 442         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 443         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 444         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 445     }
 446
 447     updateBackground();
 448 }
 449
 450 void DolphinColumnWidget::deactivate()
 451 {
 452     clearFocus();
 453
 454     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 455     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 456     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 457     if (KGlobalSettings::singleClick()) {
 458         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 459                    this, SLOT(triggerItem(const QModelIndex&)));
 460     } else {
 461         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 462                    this, SLOT(triggerItem(const QModelIndex&)));
 463     }
 464
 465     selectionModel()->clear();
 466     updateBackground();
 467 }
 468
 469 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 470 {
 471     // TODO: same implementation as in DolphinView; create helper class
 472     // for generatePreviews(), showPreview() and isCutItem()
 473
 474     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 475     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 476
 477     const KUrl& itemUrl = item.url();
 478     KUrl::List::const_iterator it = cutUrls.begin();
 479     const KUrl::List::const_iterator end = cutUrls.end();
 480     while (it != end) {
 481         if (*it == itemUrl) {
 482             return true;
 483         }
 484         ++it;
 485     }
 486
 487     return false;
 488 }
 489
 490 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 491 {
 492     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 493     return m_dolphinModel->itemForIndex(dirIndex);
 494 }
 495
 496
 497 #include "dolphincolumnwidget.moc"