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