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