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