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     kDebug() << "-------------- column widget: show" << show;
 176     m_iconManager->setShowPreview(show);
 177
 178     m_dirLister->stop();
 179     m_dirLister->openUrl(m_url, KDirLister::Reload);
 180 }
 181
 182 void DolphinColumnWidget::updateBackground()
 183 {
 184     // TODO: The alpha-value 150 is copied from DolphinView::setActive(). When
 185     // cleaning up the cut-indication of DolphinColumnWidget with the code from
 186     // DolphinView a common helper-class should be available which can be shared
 187     // by all view implementations -> no hardcoded value anymore
 188     const QPalette::ColorRole role = viewport()->backgroundRole();
 189     QColor color = viewport()->palette().color(role);
 190     color.setAlpha((m_active && m_view->m_active) ? 255 : 150);
 191
 192     QPalette palette = viewport()->palette();
 193     palette.setColor(role, color);
 194     viewport()->setPalette(palette);
 195
 196     update();
 197 }
 198
 199 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 200 {
 201     m_proxyModel->setFilterRegExp(nameFilter);
 202 }
 203
 204
 205 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 206 {
 207     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 208     viewOptions.font = m_font;
 209     viewOptions.decorationSize = m_decorationSize;
 210     viewOptions.showDecorationSelected = true;
 211     return viewOptions;
 212 }
 213
 214 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 215 {
 216     DragAndDropHelper::startDrag(this, supportedActions);
 217 }
 218
 219 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 220 {
 221     if (event->mimeData()->hasUrls()) {
 222         event->acceptProposedAction();
 223     }
 224
 225     m_dragging = true;
 226 }
 227
 228 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 229 {
 230     QListView::dragLeaveEvent(event);
 231
 232     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 233     m_dragging = false;
 234     setDirtyRegion(m_dropRect);
 235 }
 236
 237 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 238 {
 239     QListView::dragMoveEvent(event);
 240
 241     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 242     const QModelIndex index = indexAt(event->pos());
 243     setDirtyRegion(m_dropRect);
 244
 245     m_dropRect.setSize(QSize()); // set as invalid
 246     if (index.isValid()) {
 247         const KFileItem item = itemForIndex(index);
 248         if (!item.isNull() && item.isDir()) {
 249             m_dropRect = visualRect(index);
 250         }
 251     }
 252     setDirtyRegion(m_dropRect);
 253
 254     if (event->mimeData()->hasUrls()) {
 255         // accept url drops, independently from the destination item
 256         event->acceptProposedAction();
 257     }
 258 }
 259
 260 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 261 {
 262     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 263     if (!urls.isEmpty()) {
 264         const QModelIndex index = indexAt(event->pos());
 265         const KFileItem item = itemForIndex(index);
 266         m_view->m_controller->indicateDroppedUrls(urls,
 267                                                   url(),
 268                                                   item);
 269         event->acceptProposedAction();
 270     }
 271     QListView::dropEvent(event);
 272     m_dragging = false;
 273 }
 274
 275 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 276 {
 277     if (!m_childUrl.isEmpty()) {
 278         // indicate the shown URL of the next column by highlighting the shown folder item
 279         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 280         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 281         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 282             const QRect itemRect = visualRect(proxyIndex);
 283             QPainter painter(viewport());
 284             painter.save();
 285
 286             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 287             color.setAlpha(32);
 288             painter.setPen(Qt::NoPen);
 289             painter.setBrush(color);
 290             painter.drawRect(itemRect);
 291
 292             painter.restore();
 293         }
 294     }
 295
 296     QListView::paintEvent(event);
 297
 298     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 299     if (m_dragging) {
 300         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 301         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 302     }
 303 }
 304
 305 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 306 {
 307     m_view->m_controller->requestActivation();
 308     if (!m_active) {
 309         m_view->requestActivation(this);
 310         m_view->m_controller->triggerUrlChangeRequest(m_url);
 311     }
 312
 313     QListView::mousePressEvent(event);
 314 }
 315
 316 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 317 {
 318     QListView::keyPressEvent(event);
 319
 320     const QItemSelectionModel* selModel = selectionModel();
 321     const QModelIndex currentIndex = selModel->currentIndex();
 322     const bool trigger = currentIndex.isValid()
 323                          && (event->key() == Qt::Key_Return)
 324                          && (selModel->selectedIndexes().count() <= 1);
 325     if (trigger) {
 326         triggerItem(currentIndex);
 327     }
 328 }
 329
 330 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 331 {
 332     if (!m_active) {
 333         m_view->requestActivation(this);
 334         m_view->m_controller->triggerUrlChangeRequest(m_url);
 335     }
 336
 337     QListView::contextMenuEvent(event);
 338
 339     const QModelIndex index = indexAt(event->pos());
 340     if (index.isValid() || m_active) {
 341         // Only open a context menu above an item or if the mouse is above
 342         // the active column.
 343         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 344         m_view->m_controller->triggerContextMenuRequest(pos);
 345     }
 346 }
 347
 348 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 349 {
 350     QListView::selectionChanged(selected, deselected);
 351
 352     QItemSelectionModel* selModel = m_view->selectionModel();
 353     selModel->select(selected, QItemSelectionModel::Select);
 354     selModel->select(deselected, QItemSelectionModel::Deselect);
 355 }
 356
 357 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 358 {
 359     const KFileItem item = itemForIndex(index);
 360     m_view->m_controller->triggerItem(item);
 361 }
 362
 363 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 364 {
 365     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 366     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 367     m_view->m_controller->emitItemEntered(item);
 368 }
 369
 370 void DolphinColumnWidget::activate()
 371 {
 372     setFocus(Qt::OtherFocusReason);
 373
 374     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 375     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 376     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 377     if (KGlobalSettings::singleClick()) {
 378         connect(this, SIGNAL(clicked(const QModelIndex&)),
 379                 this, SLOT(triggerItem(const QModelIndex&)));
 380     } else {
 381         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 382                 this, SLOT(triggerItem(const QModelIndex&)));
 383     }
 384
 385     updateBackground();
 386 }
 387
 388 void DolphinColumnWidget::deactivate()
 389 {
 390     clearFocus();
 391
 392     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 393     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 394     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 395     if (KGlobalSettings::singleClick()) {
 396         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 397                    this, SLOT(triggerItem(const QModelIndex&)));
 398     } else {
 399         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 400                    this, SLOT(triggerItem(const QModelIndex&)));
 401     }
 402
 403     selectionModel()->clear();
 404     updateBackground();
 405 }
 406
 407 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 408 {
 409     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 410     return m_dolphinModel->itemForIndex(dirIndex);
 411 }
 412
 413
 414 #include "dolphincolumnwidget.moc"