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 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  77 //       check avoids a division by zero happening on versions before 4.3.1.
  78 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  79 //       ereslibre
  80 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  81     setVerticalScrollMode(QListView::ScrollPerPixel);
  82     setHorizontalScrollMode(QListView::ScrollPerPixel);
  83 #endif
  84
  85     // apply the column mode settings to the widget
  86     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  87     Q_ASSERT(settings != 0);
  88
  89     m_font = QFont(settings->fontFamily(), settings->fontSize());
  90     m_font.setItalic(settings->italicFont());
  91     m_font.setBold(settings->boldFont());
  92
  93     const int iconSize = settings->iconSize();
  94     setDecorationSize(QSize(iconSize, iconSize));
  95
  96     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  97     setItemDelegate(delegate);
  98
  99     activate();
 100
 101     connect(this, SIGNAL(viewportEntered()),
 102             m_view->m_controller, SLOT(emitViewportEntered()));
 103     connect(this, SIGNAL(entered(const QModelIndex&)),
 104             this, SLOT(slotEntered(const QModelIndex&)));
 105
 106     //m_dirLister = new DolphinDirLister(); TODO
 107     m_dirLister = new KDirLister();
 108     m_dirLister->setAutoUpdate(true);
 109     m_dirLister->setMainWindow(this);
 110     m_dirLister->setDelayedMimeTypes(true);
 111     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 112     m_dirLister->setShowingDotFiles(showHiddenFiles);
 113
 114     m_dolphinModel = new DolphinModel(this);
 115     m_dolphinModel->setDirLister(m_dirLister);
 116     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 117
 118     m_proxyModel = new DolphinSortFilterProxyModel(this);
 119     m_proxyModel->setSourceModel(m_dolphinModel);
 120     m_proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
 121
 122     setModel(m_proxyModel);
 123     const bool useSelManager = KGlobalSettings::singleClick() &&
 124                                DolphinSettings::instance().generalSettings()->showSelectionToggle();
 125     if (useSelManager) {
 126         SelectionManager* selManager = new SelectionManager(this);
 127         connect(selManager, SIGNAL(selectionChanged()),
 128                 this, SLOT(requestActivation()));
 129         connect(m_view->m_controller, SIGNAL(urlChanged(const KUrl&)),
 130                 selManager, SLOT(reset()));
 131 }
 132     new KMimeTypeResolver(this, m_dolphinModel);
 133     m_iconManager = new IconManager(this, m_proxyModel);
 134     m_iconManager->setShowPreview(m_view->m_controller->dolphinView()->showPreview());
 135
 136     m_dirLister->openUrl(url, KDirLister::NoFlags);
 137 }
 138
 139 DolphinColumnWidget::~DolphinColumnWidget()
 140 {
 141     delete m_proxyModel;
 142     m_proxyModel = 0;
 143     delete m_dolphinModel;
 144     m_dolphinModel = 0;
 145     m_dirLister = 0; // deleted by m_dolphinModel
 146 }
 147
 148 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 149 {
 150     setIconSize(size);
 151     m_decorationSize = size;
 152     doItemsLayout();
 153 }
 154
 155 void DolphinColumnWidget::setActive(bool active)
 156 {
 157     if (m_active == active) {
 158         return;
 159     }
 160
 161     m_active = active;
 162
 163     if (active) {
 164         activate();
 165     } else {
 166         deactivate();
 167     }
 168 }
 169
 170 void DolphinColumnWidget::reload()
 171 {
 172     m_dirLister->stop();
 173     m_dirLister->openUrl(m_url, KDirLister::Reload);
 174 }
 175
 176 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 177 {
 178     if (show != m_dirLister->showingDotFiles()) {
 179         m_dirLister->setShowingDotFiles(show);
 180         m_dirLister->stop();
 181         m_dirLister->openUrl(m_url, KDirLister::Reload);
 182     }
 183 }
 184
 185 void DolphinColumnWidget::setShowPreview(bool show)
 186 {
 187     m_iconManager->setShowPreview(show);
 188
 189     m_dirLister->stop();
 190     m_dirLister->openUrl(m_url, KDirLister::Reload);
 191 }
 192
 193 void DolphinColumnWidget::updateBackground()
 194 {
 195     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 196     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 197     // DolphinView a common helper-class should be available which can be shared
 198     // by all view implementations -> no hardcoded value anymore
 199     const QPalette::ColorRole role = viewport()->backgroundRole();
 200     QColor color = viewport()->palette().color(role);
 201     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 202
 203     QPalette palette = viewport()->palette();
 204     palette.setColor(role, color);
 205     viewport()->setPalette(palette);
 206
 207     update();
 208 }
 209
 210 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 211 {
 212     m_proxyModel->setFilterRegExp(nameFilter);
 213 }
 214
 215
 216 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 217 {
 218     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 219     viewOptions.font = m_font;
 220     viewOptions.decorationSize = m_decorationSize;
 221     viewOptions.showDecorationSelected = true;
 222     return viewOptions;
 223 }
 224
 225 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 226 {
 227     DragAndDropHelper::startDrag(this, supportedActions);
 228 }
 229
 230 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 231 {
 232     if (event->mimeData()->hasUrls()) {
 233         event->acceptProposedAction();
 234     }
 235
 236     m_dragging = true;
 237 }
 238
 239 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 240 {
 241     QListView::dragLeaveEvent(event);
 242
 243     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 244     m_dragging = false;
 245     setDirtyRegion(m_dropRect);
 246 }
 247
 248 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 249 {
 250     QListView::dragMoveEvent(event);
 251
 252     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 253     const QModelIndex index = indexAt(event->pos());
 254     setDirtyRegion(m_dropRect);
 255
 256     m_dropRect.setSize(QSize()); // set as invalid
 257     if (index.isValid()) {
 258         const KFileItem item = itemForIndex(index);
 259         if (!item.isNull() && item.isDir()) {
 260             m_dropRect = visualRect(index);
 261         }
 262     }
 263     setDirtyRegion(m_dropRect);
 264
 265     if (event->mimeData()->hasUrls()) {
 266         // accept url drops, independently from the destination item
 267         event->acceptProposedAction();
 268     }
 269 }
 270
 271 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 272 {
 273     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 274     if (!urls.isEmpty()) {
 275         const QModelIndex index = indexAt(event->pos());
 276         const KFileItem item = itemForIndex(index);
 277         m_view->m_controller->indicateDroppedUrls(urls,
 278                                                   url(),
 279                                                   item);
 280         event->acceptProposedAction();
 281     }
 282     QListView::dropEvent(event);
 283     m_dragging = false;
 284 }
 285
 286 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 287 {
 288     if (!m_childUrl.isEmpty()) {
 289         // indicate the shown URL of the next column by highlighting the shown folder item
 290         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 291         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 292         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 293             const QRect itemRect = visualRect(proxyIndex);
 294             QPainter painter(viewport());
 295             painter.save();
 296
 297             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 298             color.setAlpha(32);
 299             painter.setPen(Qt::NoPen);
 300             painter.setBrush(color);
 301             painter.drawRect(itemRect);
 302
 303             painter.restore();
 304         }
 305     }
 306
 307     QListView::paintEvent(event);
 308
 309     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 310     if (m_dragging) {
 311         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 312         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 313     }
 314 }
 315
 316 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 317 {
 318     requestActivation();
 319     QListView::mousePressEvent(event);
 320 }
 321
 322 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 323 {
 324     QListView::keyPressEvent(event);
 325
 326     const QItemSelectionModel* selModel = selectionModel();
 327     const QModelIndex currentIndex = selModel->currentIndex();
 328     const bool trigger = currentIndex.isValid()
 329                          && (event->key() == Qt::Key_Return)
 330                          && (selModel->selectedIndexes().count() <= 1);
 331     if (trigger) {
 332         triggerItem(currentIndex);
 333     }
 334 }
 335
 336 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 337 {
 338     if (!m_active) {
 339         m_view->requestActivation(this);
 340         m_view->m_controller->triggerUrlChangeRequest(m_url);
 341     }
 342
 343     QListView::contextMenuEvent(event);
 344
 345     const QModelIndex index = indexAt(event->pos());
 346     if (index.isValid() || m_active) {
 347         // Only open a context menu above an item or if the mouse is above
 348         // the active column.
 349         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 350         m_view->m_controller->triggerContextMenuRequest(pos);
 351     }
 352 }
 353
 354 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 355 {
 356     QListView::selectionChanged(selected, deselected);
 357
 358     QItemSelectionModel* selModel = m_view->selectionModel();
 359     selModel->select(selected, QItemSelectionModel::Select);
 360     selModel->select(deselected, QItemSelectionModel::Deselect);
 361 }
 362
 363 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 364 {
 365     const KFileItem item = itemForIndex(index);
 366     m_view->m_controller->triggerItem(item);
 367 }
 368
 369 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 370 {
 371     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 372     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 373     m_view->m_controller->emitItemEntered(item);
 374 }
 375
 376 void DolphinColumnWidget::requestActivation()
 377 {
 378     m_view->m_controller->requestActivation();
 379     if (!m_active) {
 380         m_view->requestActivation(this);
 381         m_view->m_controller->triggerUrlChangeRequest(m_url);
 382         selectionModel()->clear();
 383     }
 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 (selectionModel() && selectionModel()->currentIndex().isValid())
 402         selectionModel()->setCurrentIndex(selectionModel()->currentIndex(), QItemSelectionModel::SelectCurrent);
 403
 404     updateBackground();
 405 }
 406
 407 void DolphinColumnWidget::deactivate()
 408 {
 409     clearFocus();
 410
 411     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 412     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 413     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 414     if (KGlobalSettings::singleClick()) {
 415         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 416                    this, SLOT(triggerItem(const QModelIndex&)));
 417     } else {
 418         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 419                    this, SLOT(triggerItem(const QModelIndex&)));
 420     }
 421
 422     const QModelIndex current = selectionModel()->currentIndex();
 423     selectionModel()->clear();
 424     selectionModel()->setCurrentIndex(current, QItemSelectionModel::NoUpdate);
 425     updateBackground();
 426 }
 427
 428 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 429 {
 430     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 431     return m_dolphinModel->itemForIndex(dirIndex);
 432 }
 433
 434
 435 #include "dolphincolumnwidget.moc"