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_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     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 115     m_dirLister->setShowingDotFiles(showHiddenFiles);
 116     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 117             this, SLOT(generatePreviews(const KFileItemList&)));
 118
 119     m_dolphinModel = new DolphinModel(this);
 120     m_dolphinModel->setDirLister(m_dirLister);
 121     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 122
 123     m_proxyModel = new DolphinSortFilterProxyModel(this);
 124     m_proxyModel->setSourceModel(m_dolphinModel);
 125
 126     setModel(m_proxyModel);
 127     new KMimeTypeResolver(this, m_dolphinModel);
 128
 129     m_dirLister->openUrl(url, KDirLister::NoFlags);
 130 }
 131
 132 DolphinColumnWidget::~DolphinColumnWidget()
 133 {
 134     delete m_dirLister;
 135     m_dirLister = 0;
 136 }
 137
 138 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 139 {
 140     m_viewOptions.decorationSize = size;
 141     doItemsLayout();
 142 }
 143
 144 void DolphinColumnWidget::setActive(bool active)
 145 {
 146     if (m_active == active) {
 147         return;
 148     }
 149
 150     m_active = active;
 151
 152     if (active) {
 153         activate();
 154     } else {
 155         deactivate();
 156     }
 157 }
 158
 159 void DolphinColumnWidget::reload()
 160 {
 161     m_dirLister->stop();
 162     m_dirLister->openUrl(m_url, KDirLister::Reload);
 163 }
 164
 165 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 166 {
 167     if (show != m_dirLister->showingDotFiles()) {
 168         m_dirLister->setShowingDotFiles(show);
 169         m_dirLister->stop();
 170         m_dirLister->openUrl(m_url, KDirLister::Reload);
 171     }
 172 }
 173
 174 void DolphinColumnWidget::setShowPreview(bool show)
 175 {
 176     if (show != m_showPreview) {
 177         m_dirLister->stop();
 178         m_dirLister->openUrl(m_url, KDirLister::Reload);
 179     }
 180 }
 181
 182 void DolphinColumnWidget::updateBackground()
 183 {
 184     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 185     if (!m_active || !m_view->m_active) {
 186         color.setAlpha(150);
 187     }
 188     QPalette palette = viewport()->palette();
 189     palette.setColor(viewport()->backgroundRole(), color);
 190     viewport()->setPalette(palette);
 191
 192     update();
 193 }
 194
 195 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 196 {
 197     m_proxyModel->setFilterRegExp(nameFilter);
 198 }
 199
 200 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 201 {
 202     DragAndDropHelper::startDrag(this, supportedActions);
 203 }
 204
 205 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 206 {
 207     if (event->mimeData()->hasUrls()) {
 208         event->acceptProposedAction();
 209     }
 210
 211     m_dragging = true;
 212 }
 213
 214 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 215 {
 216     QListView::dragLeaveEvent(event);
 217
 218     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 219     m_dragging = false;
 220     setDirtyRegion(m_dropRect);
 221 }
 222
 223 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 224 {
 225     QListView::dragMoveEvent(event);
 226
 227     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 228     const QModelIndex index = indexAt(event->pos());
 229     setDirtyRegion(m_dropRect);
 230     if (itemForIndex(index).isDir()) {
 231         m_dropRect = visualRect(index);
 232     } else {
 233         m_dropRect.setSize(QSize()); // set as invalid
 234     }
 235     setDirtyRegion(m_dropRect);
 236 }
 237
 238 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 239 {
 240     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 241     if (!urls.isEmpty()) {
 242         const QModelIndex index = indexAt(event->pos());
 243         const KFileItem item = itemForIndex(index);
 244         m_view->m_controller->indicateDroppedUrls(urls,
 245                                                   url(),
 246                                                   item);
 247         event->acceptProposedAction();
 248     }
 249     QListView::dropEvent(event);
 250     m_dragging = false;
 251 }
 252
 253 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 254 {
 255     if (!m_childUrl.isEmpty()) {
 256         // indicate the shown URL of the next column by highlighting the shown folder item
 257         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 258         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 259         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 260             const QRect itemRect = visualRect(proxyIndex);
 261             QPainter painter(viewport());
 262             painter.save();
 263
 264             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 265             color.setAlpha(32);
 266             painter.setPen(Qt::NoPen);
 267             painter.setBrush(color);
 268             painter.drawRect(itemRect);
 269
 270             painter.restore();
 271         }
 272     }
 273
 274     QListView::paintEvent(event);
 275
 276     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 277     if (m_dragging) {
 278         const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
 279         DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
 280     }
 281 }
 282
 283 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 284 {
 285     m_view->m_controller->requestActivation();
 286     if (!m_active) {
 287         m_view->requestActivation(this);
 288         m_view->m_controller->triggerUrlChangeRequest(m_url);
 289     }
 290
 291     QListView::mousePressEvent(event);
 292 }
 293
 294 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 295 {
 296     QListView::keyPressEvent(event);
 297
 298     const QItemSelectionModel* selModel = selectionModel();
 299     const QModelIndex currentIndex = selModel->currentIndex();
 300     const bool trigger = currentIndex.isValid()
 301                          && (event->key() == Qt::Key_Return)
 302                          && (selModel->selectedIndexes().count() <= 1);
 303     if (trigger) {
 304         triggerItem(currentIndex);
 305     }
 306 }
 307
 308 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 309 {
 310     if (!m_active) {
 311         m_view->requestActivation(this);
 312         m_view->m_controller->triggerUrlChangeRequest(m_url);
 313     }
 314
 315     QListView::contextMenuEvent(event);
 316
 317     const QModelIndex index = indexAt(event->pos());
 318     if (index.isValid() || m_active) {
 319         // Only open a context menu above an item or if the mouse is above
 320         // the active column.
 321         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 322         m_view->m_controller->triggerContextMenuRequest(pos);
 323     }
 324 }
 325
 326 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 327 {
 328     QListView::selectionChanged(selected, deselected);
 329
 330     QItemSelectionModel* selModel = m_view->selectionModel();
 331     selModel->select(selected, QItemSelectionModel::Select);
 332     selModel->select(deselected, QItemSelectionModel::Deselect);
 333 }
 334
 335 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 336 {
 337     const KFileItem item = itemForIndex(index);
 338     m_view->m_controller->triggerItem(item);
 339 }
 340
 341 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 342 {
 343     // TODO: same implementation as in DolphinView; create helper class
 344     // for generatePreviews(), showPreview() and isCutItem()
 345
 346     if (m_view->m_controller->dolphinView()->showPreview()) {
 347         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 348         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 349                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 350     }
 351 }
 352
 353 void DolphinColumnWidget::showPreview(const KFileItem& item, const QPixmap& pixmap)
 354 {
 355     // TODO: same implementation as in DolphinView; create helper class
 356     // for generatePreviews(), showPreview() and isCutItem()
 357
 358     Q_ASSERT(!item.isNull());
 359     if (item.url().directory() != m_dirLister->url().path()) {
 360         // the preview job is still working on items of an older URL, hence
 361         // the item is not part of the directory model anymore
 362         return;
 363     }
 364
 365     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 366     if (idx.isValid() && (idx.column() == 0)) {
 367         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 368         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 369             KIconEffect iconEffect;
 370             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 371             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 372         } else {
 373             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 374         }
 375     }
 376 }
 377
 378 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 379 {
 380     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 381     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 382     m_view->m_controller->emitItemEntered(item);
 383 }
 384
 385 void DolphinColumnWidget::activate()
 386 {
 387     setFocus(Qt::OtherFocusReason);
 388
 389     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 390     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 391     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 392     if (KGlobalSettings::singleClick()) {
 393         connect(this, SIGNAL(clicked(const QModelIndex&)),
 394                 this, SLOT(triggerItem(const QModelIndex&)));
 395     } else {
 396         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 397                 this, SLOT(triggerItem(const QModelIndex&)));
 398     }
 399
 400     if (!m_childUrl.isEmpty()) {
 401         // assure that the current index is set on the index that represents
 402         // the child URL
 403         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 404         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 405         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 406     }
 407
 408     updateBackground();
 409 }
 410
 411 void DolphinColumnWidget::deactivate()
 412 {
 413     clearFocus();
 414
 415     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 416     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 417     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 418     if (KGlobalSettings::singleClick()) {
 419         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 420                    this, SLOT(triggerItem(const QModelIndex&)));
 421     } else {
 422         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 423                    this, SLOT(triggerItem(const QModelIndex&)));
 424     }
 425
 426     selectionModel()->clear();
 427     updateBackground();
 428 }
 429
 430 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 431 {
 432     // TODO: same implementation as in DolphinView; create helper class
 433     // for generatePreviews(), showPreview() and isCutItem()
 434
 435     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 436     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 437
 438     const KUrl& itemUrl = item.url();
 439     KUrl::List::const_iterator it = cutUrls.begin();
 440     const KUrl::List::const_iterator end = cutUrls.end();
 441     while (it != end) {
 442         if (*it == itemUrl) {
 443             return true;
 444         }
 445         ++it;
 446     }
 447
 448     return false;
 449 }
 450
 451 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 452 {
 453     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 454     return m_dolphinModel->itemForIndex(dirIndex);
 455 }
 456
 457
 458 #include "dolphincolumnwidget.moc"