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 <kjob.h>
  39 #include <kmimetyperesolver.h>
  40 #include <konqmimedata.h>
  41
  42 #include <QAbstractProxyModel>
  43 #include <QApplication>
  44 #include <QClipboard>
  45 #include <QPoint>
  46 #include <QScrollBar>
  47 #include <QTimer>
  48 #include <QTimeLine>
  49
  50 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  51                                          DolphinColumnView* columnView,
  52                                          const KUrl& url) :
  53     QListView(parent),
  54     m_active(true),
  55     m_showPreview(false),
  56     m_view(columnView),
  57     m_url(url),
  58     m_childUrl(),
  59     m_font(),
  60     m_decorationSize(),
  61     m_dirLister(0),
  62     m_dolphinModel(0),
  63     m_proxyModel(0),
  64     m_previewJob(0),
  65     m_dragging(false),
  66     m_dropRect()
  67 {
  68     setMouseTracking(true);
  69     viewport()->setAttribute(Qt::WA_Hover);
  70     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  71     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  72     setSelectionBehavior(SelectItems);
  73     setSelectionMode(QAbstractItemView::ExtendedSelection);
  74     setDragDropMode(QAbstractItemView::DragDrop);
  75     setDropIndicatorShown(false);
  76
  77 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  78 //       check avoids a division by zero happening on versions before 4.3.1.
  79 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  80 //       ereslibre
  81 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  82     setVerticalScrollMode(QListView::ScrollPerPixel);
  83     setHorizontalScrollMode(QListView::ScrollPerPixel);
  84 #endif
  85
  86     // apply the column mode settings to the widget
  87     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  88     Q_ASSERT(settings != 0);
  89
  90     m_font = QFont(settings->fontFamily(), settings->fontSize());
  91     m_font.setItalic(settings->italicFont());
  92     m_font.setBold(settings->boldFont());
  93
  94     const int iconSize = settings->iconSize();
  95     m_decorationSize = QSize(iconSize, iconSize);
  96
  97     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  98     setItemDelegate(delegate);
  99
 100     activate();
 101
 102     connect(this, SIGNAL(viewportEntered()),
 103             m_view->m_controller, SLOT(emitViewportEntered()));
 104     connect(this, SIGNAL(entered(const QModelIndex&)),
 105             this, SLOT(slotEntered(const QModelIndex&)));
 106
 107     //m_dirLister = new DolphinDirLister(); TODO
 108     m_dirLister = new KDirLister();
 109     m_dirLister->setAutoUpdate(true);
 110     m_dirLister->setMainWindow(this);
 111     m_dirLister->setDelayedMimeTypes(true);
 112     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 113     m_dirLister->setShowingDotFiles(showHiddenFiles);
 114     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 115             this, SLOT(generatePreviews(const KFileItemList&)));
 116
 117     m_dolphinModel = new DolphinModel(this);
 118     m_dolphinModel->setDirLister(m_dirLister);
 119     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 120
 121     m_proxyModel = new DolphinSortFilterProxyModel(this);
 122     m_proxyModel->setSourceModel(m_dolphinModel);
 123
 124     setModel(m_proxyModel);
 125     new KMimeTypeResolver(this, m_dolphinModel);
 126
 127     m_dirLister->openUrl(url, KDirLister::NoFlags);
 128 }
 129
 130 DolphinColumnWidget::~DolphinColumnWidget()
 131 {
 132     delete m_proxyModel;
 133     m_proxyModel = 0;
 134     delete m_dolphinModel;
 135     m_dolphinModel = 0;
 136     m_dirLister = 0; // deleted by m_dolphinModel
 137
 138     if (m_previewJob != 0) {
 139         m_previewJob->kill();
 140         m_previewJob = 0;
 141     }
 142 }
 143
 144 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 145 {
 146     m_decorationSize = size;
 147     doItemsLayout();
 148 }
 149
 150 void DolphinColumnWidget::setActive(bool active)
 151 {
 152     if (m_active == active) {
 153         return;
 154     }
 155
 156     m_active = active;
 157
 158     if (active) {
 159         activate();
 160     } else {
 161         deactivate();
 162     }
 163 }
 164
 165 void DolphinColumnWidget::reload()
 166 {
 167     m_dirLister->stop();
 168     m_dirLister->openUrl(m_url, KDirLister::Reload);
 169 }
 170
 171 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 172 {
 173     if (show != m_dirLister->showingDotFiles()) {
 174         m_dirLister->setShowingDotFiles(show);
 175         m_dirLister->stop();
 176         m_dirLister->openUrl(m_url, KDirLister::Reload);
 177     }
 178 }
 179
 180 void DolphinColumnWidget::setShowPreview(bool show)
 181 {
 182     if (show != m_showPreview) {
 183         m_dirLister->stop();
 184         m_dirLister->openUrl(m_url, KDirLister::Reload);
 185     }
 186 }
 187
 188 void DolphinColumnWidget::updateBackground()
 189 {
 190     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 191     if (!m_active || !m_view->m_active) {
 192         color.setAlpha(150);
 193     }
 194     QPalette palette = viewport()->palette();
 195     palette.setColor(viewport()->backgroundRole(), color);
 196     viewport()->setPalette(palette);
 197
 198     update();
 199 }
 200
 201 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 202 {
 203     m_proxyModel->setFilterRegExp(nameFilter);
 204 }
 205
 206
 207 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 208 {
 209     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 210     viewOptions.font = m_font;
 211     viewOptions.decorationSize = m_decorationSize;
 212     viewOptions.showDecorationSelected = true;
 213     return viewOptions;
 214 }
 215
 216 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 217 {
 218     DragAndDropHelper::startDrag(this, supportedActions);
 219 }
 220
 221 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 222 {
 223     if (event->mimeData()->hasUrls()) {
 224         event->acceptProposedAction();
 225     }
 226
 227     m_dragging = true;
 228 }
 229
 230 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 231 {
 232     QListView::dragLeaveEvent(event);
 233
 234     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 235     m_dragging = false;
 236     setDirtyRegion(m_dropRect);
 237 }
 238
 239 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 240 {
 241     QListView::dragMoveEvent(event);
 242
 243     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 244     const QModelIndex index = indexAt(event->pos());
 245     setDirtyRegion(m_dropRect);
 246
 247     m_dropRect.setSize(QSize()); // set as invalid
 248     if (index.isValid()) {
 249         const KFileItem item = itemForIndex(index);
 250         if (!item.isNull() && item.isDir()) {
 251             m_dropRect = visualRect(index);
 252         }
 253     }
 254     setDirtyRegion(m_dropRect);
 255 }
 256
 257 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 258 {
 259     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 260     if (!urls.isEmpty()) {
 261         const QModelIndex index = indexAt(event->pos());
 262         const KFileItem item = itemForIndex(index);
 263         m_view->m_controller->indicateDroppedUrls(urls,
 264                                                   url(),
 265                                                   item);
 266         event->acceptProposedAction();
 267     }
 268     QListView::dropEvent(event);
 269     m_dragging = false;
 270 }
 271
 272 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 273 {
 274     if (!m_childUrl.isEmpty()) {
 275         // indicate the shown URL of the next column by highlighting the shown folder item
 276         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 277         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 278         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 279             const QRect itemRect = visualRect(proxyIndex);
 280             QPainter painter(viewport());
 281             painter.save();
 282
 283             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 284             color.setAlpha(32);
 285             painter.setPen(Qt::NoPen);
 286             painter.setBrush(color);
 287             painter.drawRect(itemRect);
 288
 289             painter.restore();
 290         }
 291     }
 292
 293     QListView::paintEvent(event);
 294
 295     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 296     if (m_dragging) {
 297         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 298         DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
 299     }
 300 }
 301
 302 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 303 {
 304     m_view->m_controller->requestActivation();
 305     if (!m_active) {
 306         m_view->requestActivation(this);
 307         m_view->m_controller->triggerUrlChangeRequest(m_url);
 308     }
 309
 310     QListView::mousePressEvent(event);
 311 }
 312
 313 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 314 {
 315     QListView::keyPressEvent(event);
 316
 317     const QItemSelectionModel* selModel = selectionModel();
 318     const QModelIndex currentIndex = selModel->currentIndex();
 319     const bool trigger = currentIndex.isValid()
 320                          && (event->key() == Qt::Key_Return)
 321                          && (selModel->selectedIndexes().count() <= 1);
 322     if (trigger) {
 323         triggerItem(currentIndex);
 324     }
 325 }
 326
 327 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 328 {
 329     if (!m_active) {
 330         m_view->requestActivation(this);
 331         m_view->m_controller->triggerUrlChangeRequest(m_url);
 332     }
 333
 334     QListView::contextMenuEvent(event);
 335
 336     const QModelIndex index = indexAt(event->pos());
 337     if (index.isValid() || m_active) {
 338         // Only open a context menu above an item or if the mouse is above
 339         // the active column.
 340         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 341         m_view->m_controller->triggerContextMenuRequest(pos);
 342     }
 343 }
 344
 345 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 346 {
 347     QListView::selectionChanged(selected, deselected);
 348
 349     QItemSelectionModel* selModel = m_view->selectionModel();
 350     selModel->select(selected, QItemSelectionModel::Select);
 351     selModel->select(deselected, QItemSelectionModel::Deselect);
 352 }
 353
 354 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 355 {
 356     const KFileItem item = itemForIndex(index);
 357     m_view->m_controller->triggerItem(item);
 358 }
 359
 360 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 361 {
 362     // TODO: same implementation as in DolphinView; create helper class
 363     // for generatePreviews(), showPreview() and isCutItem()
 364
 365     if (m_view->m_controller->dolphinView()->showPreview()) {
 366         if (m_previewJob != 0) {
 367             m_previewJob->kill();
 368             m_previewJob = 0;
 369         }
 370
 371         m_previewJob = KIO::filePreview(items, 128);
 372         connect(m_previewJob, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 373                 this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
 374         connect(m_previewJob, SIGNAL(finished(KJob*)),
 375                 this, SLOT(slotPreviewJobFinished(KJob*)));
 376     }
 377 }
 378
 379 void DolphinColumnWidget::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
 380 {
 381     // TODO: same implementation as in DolphinView; create helper class
 382     // for generatePreviews(), showPreview() and isCutItem()
 383
 384     Q_ASSERT(!item.isNull());
 385     const bool showPreview = m_view->m_controller->dolphinView()->showPreview();
 386     if (!showPreview || (item.url().directory() != m_dirLister->url().path())) {
 387         // the preview job is still working on items of an older URL, hence
 388         // the item is not part of the directory model anymore
 389         return;
 390     }
 391
 392     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 393     if (idx.isValid() && (idx.column() == 0)) {
 394         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 395         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 396             KIconEffect iconEffect;
 397             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 398             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 399         } else {
 400             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 401         }
 402     }
 403 }
 404
 405 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 406 {
 407     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 408     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 409     m_view->m_controller->emitItemEntered(item);
 410 }
 411
 412 void DolphinColumnWidget::slotPreviewJobFinished(KJob* job)
 413 {
 414     Q_ASSERT(job == m_previewJob);
 415     m_previewJob = 0;
 416 }
 417
 418 void DolphinColumnWidget::activate()
 419 {
 420     setFocus(Qt::OtherFocusReason);
 421
 422     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 423     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 424     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 425     if (KGlobalSettings::singleClick()) {
 426         connect(this, SIGNAL(clicked(const QModelIndex&)),
 427                 this, SLOT(triggerItem(const QModelIndex&)));
 428     } else {
 429         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 430                 this, SLOT(triggerItem(const QModelIndex&)));
 431     }
 432
 433     if (!m_childUrl.isEmpty()) {
 434         // assure that the current index is set on the index that represents
 435         // the child URL
 436         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 437         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 438         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 439     }
 440
 441     updateBackground();
 442 }
 443
 444 void DolphinColumnWidget::deactivate()
 445 {
 446     clearFocus();
 447
 448     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 449     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 450     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 451     if (KGlobalSettings::singleClick()) {
 452         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 453                    this, SLOT(triggerItem(const QModelIndex&)));
 454     } else {
 455         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 456                    this, SLOT(triggerItem(const QModelIndex&)));
 457     }
 458
 459     selectionModel()->clear();
 460     updateBackground();
 461 }
 462
 463 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 464 {
 465     // TODO: same implementation as in DolphinView; create helper class
 466     // for generatePreviews(), showPreview() and isCutItem()
 467
 468     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 469     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 470
 471     const KUrl& itemUrl = item.url();
 472     KUrl::List::const_iterator it = cutUrls.begin();
 473     const KUrl::List::const_iterator end = cutUrls.end();
 474     while (it != end) {
 475         if (*it == itemUrl) {
 476             return true;
 477         }
 478         ++it;
 479     }
 480
 481     return false;
 482 }
 483
 484 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 485 {
 486     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 487     return m_dolphinModel->itemForIndex(dirIndex);
 488 }
 489
 490
 491 #include "dolphincolumnwidget.moc"