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 "dolphin_generalsettings.h"
  30 #include "draganddrophelper.h"
  31 #include "selectionmanager.h"
  32
  33 #include <kcolorscheme.h>
  34 #include <kdirlister.h>
  35 #include <kfileitem.h>
  36 #include <kio/previewjob.h>
  37 #include <kiconeffect.h>
  38 #include <kjob.h>
  39 #include <kmimetyperesolver.h>
  40 #include <konqmimedata.h>
  41
  42 #include "iconmanager.h"
  43
  44 #include <QApplication>
  45 #include <QClipboard>
  46 #include <QPainter>
  47 #include <QPoint>
  48
  49 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  50                                          DolphinColumnView* columnView,
  51                                          const KUrl& url) :
  52     QListView(parent),
  53     m_active(true),
  54     m_view(columnView),
  55     m_url(url),
  56     m_childUrl(),
  57     m_font(),
  58     m_decorationSize(),
  59     m_dirLister(0),
  60     m_dolphinModel(0),
  61     m_proxyModel(0),
  62     m_iconManager(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::ScrollBarAsNeeded);
  70     setSelectionBehavior(SelectItems);
  71     setSelectionMode(QAbstractItemView::ExtendedSelection);
  72     setDragDropMode(QAbstractItemView::DragDrop);
  73     setDropIndicatorShown(false);
  74     setSelectionRectVisible(true);
  75
  76     setVerticalScrollMode(QListView::ScrollPerPixel);
  77     setHorizontalScrollMode(QListView::ScrollPerPixel);
  78
  79     // apply the column mode settings to the widget
  80     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  81     Q_ASSERT(settings != 0);
  82
  83     if (settings->useSystemFont()) {
  84         m_font = KGlobalSettings::generalFont();
  85     } else {
  86         m_font = QFont(settings->fontFamily(),
  87                        settings->fontSize(),
  88                        settings->fontWeight(),
  89                        settings->italicFont());
  90     }
  91
  92     const int iconSize = settings->iconSize();
  93     setDecorationSize(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(window());
 109     m_dirLister->setDelayedMimeTypes(true);
 110     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 111     m_dirLister->setShowingDotFiles(showHiddenFiles);
 112
 113     m_dolphinModel = new DolphinModel(this);
 114     m_dolphinModel->setDirLister(m_dirLister);
 115     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 116
 117     m_proxyModel = new DolphinSortFilterProxyModel(this);
 118     m_proxyModel->setSourceModel(m_dolphinModel);
 119     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 120     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
 121     m_proxyModel->setSorting(dolphinView->sorting());
 122     m_proxyModel->setSortOrder(dolphinView->sortOrder());
 123
 124     setModel(m_proxyModel);
 125     const bool useSelManager = KGlobalSettings::singleClick() &&
 126                                DolphinSettings::instance().generalSettings()->showSelectionToggle();
 127     if (useSelManager) {
 128         SelectionManager* selManager = new SelectionManager(this);
 129         connect(selManager, SIGNAL(selectionChanged()),
 130                 this, SLOT(requestActivation()));
 131         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 132                 selManager, SLOT(reset()));
 133     }
 134
 135     new KMimeTypeResolver(this, m_dolphinModel);
 136     m_iconManager = new IconManager(this, m_proxyModel);
 137     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 138
 139     m_dirLister->openUrl(url, KDirLister::NoFlags);
 140
 141     connect(KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
 142             this, SLOT(updateFont()));
 143 }
 144
 145 DolphinColumnWidget::~DolphinColumnWidget()
 146 {
 147     delete m_proxyModel;
 148     m_proxyModel = 0;
 149     delete m_dolphinModel;
 150     m_dolphinModel = 0;
 151     m_dirLister = 0; // deleted by m_dolphinModel
 152 }
 153
 154 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 155 {
 156     setIconSize(size);
 157     m_decorationSize = size;
 158     doItemsLayout();
 159     if (m_iconManager != 0) {
 160         m_iconManager->updatePreviews();
 161     }
 162 }
 163
 164 void DolphinColumnWidget::setActive(bool active)
 165 {
 166     if (m_active == active) {
 167         return;
 168     }
 169
 170     m_active = active;
 171
 172     if (active) {
 173         activate();
 174     } else {
 175         deactivate();
 176     }
 177 }
 178
 179 void DolphinColumnWidget::reload()
 180 {
 181     m_dirLister->stop();
 182     m_dirLister->openUrl(m_url, KDirLister::Reload);
 183 }
 184
 185 void DolphinColumnWidget::setSorting(DolphinView::Sorting sorting)
 186 {
 187     m_proxyModel->setSorting(sorting);
 188 }
 189
 190 void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
 191 {
 192     m_proxyModel->setSortOrder(order);
 193 }
 194
 195 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 196 {
 197     if (show != m_dirLister->showingDotFiles()) {
 198         m_dirLister->setShowingDotFiles(show);
 199         m_dirLister->stop();
 200         m_dirLister->openUrl(m_url, KDirLister::Reload);
 201     }
 202 }
 203
 204 void DolphinColumnWidget::setShowPreview(bool show)
 205 {
 206     m_iconManager->setShowPreview(show);
 207
 208     m_dirLister->stop();
 209     m_dirLister->openUrl(m_url, KDirLister::Reload);
 210 }
 211
 212 void DolphinColumnWidget::updateBackground()
 213 {
 214     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 215     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 216     // DolphinView a common helper-class should be available which can be shared
 217     // by all view implementations -> no hardcoded value anymore
 218     const QPalette::ColorRole role = viewport()->backgroundRole();
 219     QColor color = viewport()->palette().color(role);
 220     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 221
 222     QPalette palette = viewport()->palette();
 223     palette.setColor(role, color);
 224     viewport()->setPalette(palette);
 225
 226     update();
 227 }
 228
 229 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 230 {
 231     m_proxyModel->setFilterRegExp(nameFilter);
 232 }
 233
 234
 235 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 236 {
 237     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 238     viewOptions.font = m_font;
 239     viewOptions.decorationSize = m_decorationSize;
 240     viewOptions.showDecorationSelected = true;
 241     return viewOptions;
 242 }
 243
 244 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 245 {
 246     DragAndDropHelper::startDrag(this, supportedActions);
 247 }
 248
 249 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 250 {
 251     if (event->mimeData()->hasUrls()) {
 252         event->acceptProposedAction();
 253     }
 254
 255     m_dragging = true;
 256 }
 257
 258 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 259 {
 260     QListView::dragLeaveEvent(event);
 261
 262     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 263     m_dragging = false;
 264     setDirtyRegion(m_dropRect);
 265 }
 266
 267 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 268 {
 269     QListView::dragMoveEvent(event);
 270
 271     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 272     const QModelIndex index = indexAt(event->pos());
 273     setDirtyRegion(m_dropRect);
 274
 275     m_dropRect.setSize(QSize()); // set as invalid
 276     if (index.isValid()) {
 277         m_view->m_controller->setItemView(this);
 278         const KFileItem item = m_view->m_controller->itemForIndex(index);
 279         if (!item.isNull() && item.isDir()) {
 280             m_dropRect = visualRect(index);
 281         }
 282     }
 283     setDirtyRegion(m_dropRect);
 284
 285     if (event->mimeData()->hasUrls()) {
 286         // accept url drops, independently from the destination item
 287         event->acceptProposedAction();
 288     }
 289 }
 290
 291 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 292 {
 293     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 294     if (!urls.isEmpty()) {
 295         const QModelIndex index = indexAt(event->pos());
 296         m_view->m_controller->setItemView(this);
 297         const KFileItem item = m_view->m_controller->itemForIndex(index);
 298         m_view->m_controller->indicateDroppedUrls(urls,
 299                                                   url(),
 300                                                   item);
 301         event->acceptProposedAction();
 302     }
 303     QListView::dropEvent(event);
 304     m_dragging = false;
 305 }
 306
 307 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 308 {
 309     if (!m_childUrl.isEmpty()) {
 310         // indicate the shown URL of the next column by highlighting the shown folder item
 311         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 312         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 313         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 314             const QRect itemRect = visualRect(proxyIndex);
 315             QPainter painter(viewport());
 316             painter.save();
 317
 318             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 319             color.setAlpha(32);
 320             painter.setPen(Qt::NoPen);
 321             painter.setBrush(color);
 322             painter.drawRect(itemRect);
 323
 324             painter.restore();
 325         }
 326     }
 327
 328     QListView::paintEvent(event);
 329
 330     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 331     if (m_dragging) {
 332         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 333         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 334     }
 335 }
 336
 337 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 338 {
 339     requestActivation();
 340     QListView::mousePressEvent(event);
 341 }
 342
 343 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 344 {
 345     QListView::keyPressEvent(event);
 346     requestActivation();
 347     m_view->m_controller->handleKeyPressEvent(event);
 348 }
 349
 350 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 351 {
 352     if (!m_active) {
 353         m_view->requestActivation(this);
 354         Q_ASSERT(m_view->m_controller->itemView() == this);
 355         m_view->m_controller->triggerUrlChangeRequest(m_url);
 356     }
 357
 358     QListView::contextMenuEvent(event);
 359
 360     const QModelIndex index = indexAt(event->pos());
 361     if (index.isValid() || m_active) {
 362         // Only open a context menu above an item or if the mouse is above
 363         // the active column.
 364         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 365         Q_ASSERT(m_view->m_controller->itemView() == this);
 366         m_view->m_controller->triggerContextMenuRequest(pos);
 367     }
 368 }
 369
 370 void DolphinColumnWidget::wheelEvent(QWheelEvent* event)
 371 {
 372     // let Ctrl+wheel events propagate to the DolphinView for icon zooming
 373     if (event->modifiers() & Qt::ControlModifier) {
 374         event->ignore();
 375         return;
 376     }
 377     QListView::wheelEvent(event);
 378 }
 379
 380 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 381 {
 382     QListView::selectionChanged(selected, deselected);
 383
 384     QItemSelectionModel* selModel = m_view->selectionModel();
 385     selModel->select(selected, QItemSelectionModel::Select);
 386     selModel->select(deselected, QItemSelectionModel::Deselect);
 387 }
 388
 389 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 390 {
 391     m_view->m_controller->setItemView(this);
 392     m_view->m_controller->emitItemEntered(index);
 393 }
 394
 395 void DolphinColumnWidget::requestActivation()
 396 {
 397     m_view->m_controller->setItemView(this);
 398     m_view->m_controller->requestActivation();
 399     if (!m_active) {
 400         m_view->requestActivation(this);
 401         m_view->m_controller->triggerUrlChangeRequest(m_url);
 402         selectionModel()->clear();
 403     }
 404 }
 405
 406 void DolphinColumnWidget::updateFont()
 407 {
 408     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 409     Q_ASSERT(settings != 0);
 410
 411     if (settings->useSystemFont()) {
 412         m_font = KGlobalSettings::generalFont();
 413     }
 414 }
 415
 416 void DolphinColumnWidget::activate()
 417 {
 418     setFocus(Qt::OtherFocusReason);
 419
 420     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 421     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 422     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 423     if (KGlobalSettings::singleClick()) {
 424         connect(this, SIGNAL(clicked(const QModelIndex&)),
 425                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 426     } else {
 427         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 428                 m_view->m_controller, SLOT(triggerItem(const QModelIndex&)));
 429     }
 430
 431     if (selectionModel() && selectionModel()->currentIndex().isValid())
 432         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 433
 434     updateBackground();
 435 }
 436
 437 void DolphinColumnWidget::deactivate()
 438 {
 439     clearFocus();
 440
 441     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 442     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 443     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 444     if (KGlobalSettings::singleClick()) {
 445         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 446                    this, SLOT(triggerItem(const QModelIndex&)));
 447     } else {
 448         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 449                    this, SLOT(triggerItem(const QModelIndex&)));
 450     }
 451
 452     const QModelIndex current = selectionModel()->currentIndex();
 453     selectionModel()->clear();
 454     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 455     updateBackground();
 456 }
 457
 458 #include "dolphincolumnwidget.moc"