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