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 "dolphinsortfilterproxymodel.h"
  27 #include "dolphinsettings.h"
  28 #include "dolphin_columnmodesettings.h"
  29 #include "draganddrophelper.h"
  30
  31 #include <kcolorscheme.h>
  32 #include <kdirlister.h>
  33 #include <kfileitem.h>
  34 #include <kio/previewjob.h>
  35 #include <kiconeffect.h>
  36 #include <kjob.h>
  37 #include <kmimetyperesolver.h>
  38 #include <konqmimedata.h>
  39
  40 #include "iconmanager.h"
  41
  42 #include <QApplication>
  43 #include <QClipboard>
  44 #include <QPainter>
  45 #include <QPoint>
  46
  47 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  48                                          DolphinColumnView* columnView,
  49                                          const KUrl& url) :
  50     QListView(parent),
  51     m_active(true),
  52     m_view(columnView),
  53     m_url(url),
  54     m_childUrl(),
  55     m_font(),
  56     m_decorationSize(),
  57     m_dirLister(0),
  58     m_dolphinModel(0),
  59     m_proxyModel(0),
  60     m_iconManager(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     setSelectionRectVisible(true);
  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_font = QFont(settings->fontFamily(), settings->fontSize());
  88     m_font.setItalic(settings->italicFont());
  89     m_font.setBold(settings->boldFont());
  90
  91     const int iconSize = settings->iconSize();
  92     m_decorationSize = QSize(iconSize, iconSize);
  93
  94     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  95     setItemDelegate(delegate);
  96
  97     activate();
  98
  99     connect(this, SIGNAL(viewportEntered()),
 100             m_view->m_controller, SLOT(emitViewportEntered()));
 101     connect(this, SIGNAL(entered(const QModelIndex&)),
 102             this, SLOT(slotEntered(const QModelIndex&)));
 103
 104     //m_dirLister = new DolphinDirLister(); TODO
 105     m_dirLister = new KDirLister();
 106     m_dirLister->setAutoUpdate(true);
 107     m_dirLister->setMainWindow(this);
 108     m_dirLister->setDelayedMimeTypes(true);
 109     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 110     m_dirLister->setShowingDotFiles(showHiddenFiles);
 111
 112     m_dolphinModel = new DolphinModel(this);
 113     m_dolphinModel->setDirLister(m_dirLister);
 114     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 115
 116     m_proxyModel = new DolphinSortFilterProxyModel(this);
 117     m_proxyModel->setSourceModel(m_dolphinModel);
 118     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 119
 120     setModel(m_proxyModel);
 121     new KMimeTypeResolver(this, m_dolphinModel);
 122     m_iconManager = new IconManager(this, m_proxyModel);
 123     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 124
 125     m_dirLister->openUrl(url, KDirLister::NoFlags);
 126 }
 127
 128 DolphinColumnWidget::~DolphinColumnWidget()
 129 {
 130     delete m_proxyModel;
 131     m_proxyModel = 0;
 132     delete m_dolphinModel;
 133     m_dolphinModel = 0;
 134     m_dirLister = 0; // deleted by m_dolphinModel
 135 }
 136
 137 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 138 {
 139     m_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     m_iconManager->setShowPreview(show);
 176
 177     m_dirLister->stop();
 178     m_dirLister->openUrl(m_url, KDirLister::Reload);
 179 }
 180
 181 void DolphinColumnWidget::updateBackground()
 182 {
 183     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 184     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 185     // DolphinView a common helper-class should be available which can be shared
 186     // by all view implementations -> no hardcoded value anymore
 187     const QPalette::ColorRole role = viewport()->backgroundRole();
 188     QColor color = viewport()->palette().color(role);
 189     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 190
 191     QPalette palette = viewport()->palette();
 192     palette.setColor(role, color);
 193     viewport()->setPalette(palette);
 194
 195     update();
 196 }
 197
 198 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 199 {
 200     m_proxyModel->setFilterRegExp(nameFilter);
 201 }
 202
 203
 204 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 205 {
 206     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 207     viewOptions.font = m_font;
 208     viewOptions.decorationSize = m_decorationSize;
 209     viewOptions.showDecorationSelected = true;
 210     return viewOptions;
 211 }
 212
 213 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 214 {
 215     DragAndDropHelper::startDrag(this, supportedActions);
 216 }
 217
 218 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 219 {
 220     if (event->mimeData()->hasUrls()) {
 221         event->acceptProposedAction();
 222     }
 223
 224     m_dragging = true;
 225 }
 226
 227 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 228 {
 229     QListView::dragLeaveEvent(event);
 230
 231     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 232     m_dragging = false;
 233     setDirtyRegion(m_dropRect);
 234 }
 235
 236 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 237 {
 238     QListView::dragMoveEvent(event);
 239
 240     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 241     const QModelIndex index = indexAt(event->pos());
 242     setDirtyRegion(m_dropRect);
 243
 244     m_dropRect.setSize(QSize()); // set as invalid
 245     if (index.isValid()) {
 246         const KFileItem item = itemForIndex(index);
 247         if (!item.isNull() && item.isDir()) {
 248             m_dropRect = visualRect(index);
 249         }
 250     }
 251     setDirtyRegion(m_dropRect);
 252
 253     if (event->mimeData()->hasUrls()) {
 254         // accept url drops, independently from the destination item
 255         event->acceptProposedAction();
 256     }
 257 }
 258
 259 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 260 {
 261     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 262     if (!urls.isEmpty()) {
 263         const QModelIndex index = indexAt(event->pos());
 264         const KFileItem item = itemForIndex(index);
 265         m_view->m_controller->indicateDroppedUrls(urls,
 266                                                   url(),
 267                                                   item);
 268         event->acceptProposedAction();
 269     }
 270     QListView::dropEvent(event);
 271     m_dragging = false;
 272 }
 273
 274 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 275 {
 276     if (!m_childUrl.isEmpty()) {
 277         // indicate the shown URL of the next column by highlighting the shown folder item
 278         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 279         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 280         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 281             const QRect itemRect = visualRect(proxyIndex);
 282             QPainter painter(viewport());
 283             painter.save();
 284
 285             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 286             color.setAlpha(32);
 287             painter.setPen(Qt::NoPen);
 288             painter.setBrush(color);
 289             painter.drawRect(itemRect);
 290
 291             painter.restore();
 292         }
 293     }
 294
 295     QListView::paintEvent(event);
 296
 297     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 298     if (m_dragging) {
 299         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 300         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 301     }
 302 }
 303
 304 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 305 {
 306     m_view->m_controller->requestActivation();
 307     if (!m_active) {
 308         m_view->requestActivation(this);
 309         m_view->m_controller->triggerUrlChangeRequest(m_url);
 310     }
 311
 312     QListView::mousePressEvent(event);
 313 }
 314
 315 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 316 {
 317     QListView::keyPressEvent(event);
 318
 319     const QItemSelectionModel* selModel = selectionModel();
 320     const QModelIndex currentIndex = selModel->currentIndex();
 321     const bool trigger = currentIndex.isValid()
 322                          && (event->key() == Qt::Key_Return)
 323                          && (selModel->selectedIndexes().count() <= 1);
 324     if (trigger) {
 325         triggerItem(currentIndex);
 326     }
 327 }
 328
 329 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 330 {
 331     if (!m_active) {
 332         m_view->requestActivation(this);
 333         m_view->m_controller->triggerUrlChangeRequest(m_url);
 334     }
 335
 336     QListView::contextMenuEvent(event);
 337
 338     const QModelIndex index = indexAt(event->pos());
 339     if (index.isValid() || m_active) {
 340         // Only open a context menu above an item or if the mouse is above
 341         // the active column.
 342         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 343         m_view->m_controller->triggerContextMenuRequest(pos);
 344     }
 345 }
 346
 347 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 348 {
 349     QListView::selectionChanged(selected, deselected);
 350
 351     QItemSelectionModel* selModel = m_view->selectionModel();
 352     selModel->select(selected, QItemSelectionModel::Select);
 353     selModel->select(deselected, QItemSelectionModel::Deselect);
 354 }
 355
 356 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 357 {
 358     const KFileItem item = itemForIndex(index);
 359     m_view->m_controller->triggerItem(item);
 360 }
 361
 362 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 363 {
 364     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 365     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 366     m_view->m_controller->emitItemEntered(item);
 367 }
 368
 369 void DolphinColumnWidget::activate()
 370 {
 371     setFocus(Qt::OtherFocusReason);
 372
 373     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 374     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 375     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 376     if (KGlobalSettings::singleClick()) {
 377         connect(this, SIGNAL(clicked(const QModelIndex&)),
 378                 this, SLOT(triggerItem(const QModelIndex&)));
 379     } else {
 380         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 381                 this, SLOT(triggerItem(const QModelIndex&)));
 382     }
 383
 384     if (selectionModel() && selectionModel()->currentIndex().isValid())
 385         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 386
 387     updateBackground();
 388 }
 389
 390 void DolphinColumnWidget::deactivate()
 391 {
 392     clearFocus();
 393
 394     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 395     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 396     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 397     if (KGlobalSettings::singleClick()) {
 398         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 399                    this, SLOT(triggerItem(const QModelIndex&)));
 400     } else {
 401         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 402                    this, SLOT(triggerItem(const QModelIndex&)));
 403     }
 404
 405     const QModelIndex current = selectionModel()->currentIndex();
 406     selectionModel()->clear();
 407     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 408     updateBackground();
 409 }
 410
 411 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 412 {
 413     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 414     return m_dolphinModel->itemForIndex(dirIndex);
 415 }
 416
 417
 418 #include "dolphincolumnwidget.moc"