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
  30 #include "dolphin_columnmodesettings.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 <konqmimedata.h>
  39
  40 #include <QAbstractProxyModel>
  41 #include <QApplication>
  42 #include <QClipboard>
  43 #include <QPoint>
  44 #include <QScrollBar>
  45 #include <QTimer>
  46 #include <QTimeLine>
  47
  48 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  49                                          DolphinColumnView* columnView,
  50                                          const KUrl& url) :
  51     QListView(parent),
  52     m_active(true),
  53     m_showPreview(false),
  54     m_view(columnView),
  55     m_url(url),
  56     m_childUrl(),
  57     m_viewOptions(),
  58     m_dirLister(0),
  59     m_dolphinModel(0),
  60     m_proxyModel(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     setFocusPolicy(Qt::NoFocus);
  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(entered(const QModelIndex&)),
 105             m_view->m_controller, SLOT(emitItemEntered(const QModelIndex&)));
 106     connect(this, SIGNAL(viewportEntered()),
 107             m_view->m_controller, SLOT(emitViewportEntered()));
 108     connect(this, SIGNAL(viewportEntered()),
 109             m_view->m_controller, SLOT(emitViewportEntered()));
 110
 111     connect(this, SIGNAL(entered(const QModelIndex&)),
 112             this, SLOT(slotEntered(const QModelIndex&)));
 113
 114     //m_dirLister = new DolphinDirLister(); TODO
 115     m_dirLister = new KDirLister();
 116     m_dirLister->setAutoUpdate(true);
 117     m_dirLister->setMainWindow(this);
 118     m_dirLister->setDelayedMimeTypes(true);
 119     m_dirLister->setShowingDotFiles(m_view->m_controller->showHiddenFiles());
 120     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 121             this, SLOT(generatePreviews(const KFileItemList&)));
 122
 123     m_dolphinModel = new DolphinModel(this);
 124     m_dolphinModel->setDirLister(m_dirLister);
 125     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 126
 127     m_proxyModel = new DolphinSortFilterProxyModel(this);
 128     m_proxyModel->setSourceModel(m_dolphinModel);
 129
 130     setModel(m_proxyModel);
 131
 132     m_dirLister->openUrl(url, KDirLister::NoFlags);
 133 }
 134
 135 DolphinColumnWidget::~DolphinColumnWidget()
 136 {
 137     delete m_dirLister;
 138     m_dirLister = 0;
 139 }
 140
 141 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 142 {
 143     m_viewOptions.decorationSize = size;
 144     doItemsLayout();
 145 }
 146
 147 void DolphinColumnWidget::setActive(bool active)
 148 {
 149     if (m_active == active) {
 150         return;
 151     }
 152
 153     m_active = active;
 154
 155     if (active) {
 156         activate();
 157     } else {
 158         deactivate();
 159     }
 160 }
 161
 162 void DolphinColumnWidget::reload()
 163 {
 164     m_dirLister->stop();
 165     m_dirLister->openUrl(m_url, KDirLister::Reload);
 166 }
 167
 168 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 169 {
 170     if (show != m_dirLister->showingDotFiles()) {
 171         m_dirLister->setShowingDotFiles(show);
 172         m_dirLister->stop();
 173         m_dirLister->openUrl(m_url, KDirLister::Reload);
 174     }
 175 }
 176
 177 void DolphinColumnWidget::setShowPreview(bool show)
 178 {
 179     if (show != m_showPreview) {
 180         m_dirLister->stop();
 181         m_dirLister->openUrl(m_url, KDirLister::Reload);
 182     }
 183 }
 184
 185 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 186 {
 187     if (event->mimeData()->hasUrls()) {
 188         event->acceptProposedAction();
 189     }
 190
 191     m_dragging = true;
 192 }
 193
 194 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 195 {
 196     QListView::dragLeaveEvent(event);
 197
 198     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 199     m_dragging = false;
 200     setDirtyRegion(m_dropRect);
 201 }
 202
 203 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 204 {
 205     QListView::dragMoveEvent(event);
 206
 207     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 208     const QModelIndex index = indexAt(event->pos());
 209     setDirtyRegion(m_dropRect);
 210     m_dropRect = visualRect(index);
 211     setDirtyRegion(m_dropRect);
 212 }
 213
 214 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 215 {
 216     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 217     if (!urls.isEmpty()) {
 218         event->acceptProposedAction();
 219         m_view->m_controller->indicateDroppedUrls(urls,
 220                                                   url(),
 221                                                   indexAt(event->pos()),
 222                                                   event->source());
 223     }
 224     QListView::dropEvent(event);
 225     m_dragging = false;
 226 }
 227
 228 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 229 {
 230     if (!m_childUrl.isEmpty()) {
 231         // indicate the shown URL of the next column by highlighting the shown folder item
 232         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 233         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 234         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 235             const QRect itemRect = visualRect(proxyIndex);
 236             QPainter painter(viewport());
 237             painter.save();
 238
 239             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 240             color.setAlpha(32);
 241             painter.setPen(Qt::NoPen);
 242             painter.setBrush(color);
 243             painter.drawRect(itemRect);
 244
 245             painter.restore();
 246         }
 247     }
 248
 249     QListView::paintEvent(event);
 250
 251     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 252     if (m_dragging) {
 253         const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
 254         DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
 255     }
 256 }
 257
 258 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 259 {
 260     if (!m_active) {
 261         m_view->requestActivation(this);
 262     }
 263
 264     QListView::mousePressEvent(event);
 265 }
 266
 267 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 268 {
 269     QListView::keyPressEvent(event);
 270
 271     const QItemSelectionModel* selModel = selectionModel();
 272     const QModelIndex currentIndex = selModel->currentIndex();
 273     const bool trigger = currentIndex.isValid()
 274                          && (event->key() == Qt::Key_Return)
 275                          && (selModel->selectedIndexes().count() <= 1);
 276     if (trigger) {
 277         triggerItem(currentIndex);
 278     }
 279 }
 280
 281 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 282 {
 283     if (!m_active) {
 284         m_view->requestActivation(this);
 285     }
 286
 287     QListView::contextMenuEvent(event);
 288
 289     const QModelIndex index = indexAt(event->pos());
 290     if (index.isValid() || m_active) {
 291         // Only open a context menu above an item or if the mouse is above
 292         // the active column.
 293         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 294         m_view->m_controller->triggerContextMenuRequest(pos);
 295     }
 296 }
 297
 298 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 299 {
 300     QListView::selectionChanged(selected, deselected);
 301
 302     QItemSelectionModel* selModel = m_view->selectionModel();
 303     selModel->select(selected, QItemSelectionModel::Select);
 304     selModel->select(deselected, QItemSelectionModel::Deselect);
 305 }
 306 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 307 {
 308     const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 309     if ((modifier & Qt::ShiftModifier) || (modifier & Qt::ControlModifier)) {
 310         // items are selected by the user, hence don't trigger the
 311         // item specified by 'index'
 312         return;
 313     }
 314
 315     // TODO: check ZIP support (see DolphinViewContainer::triggerItem)
 316     KFileItem item = m_dolphinModel->itemForIndex(m_proxyModel->mapToSource(index));
 317     if (item.isDir()) {
 318         bool isLocal;
 319         const KUrl url = item.mostLocalUrl(isLocal);
 320         m_view->showColumn(url);
 321         m_view->m_controller->setUrl(url);
 322     } else if (item.isFile()) {
 323         item.run();
 324     }
 325 }
 326
 327 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 328 {
 329     // TODO: same implementation as in DolphinView; create helper class
 330     // for generatePreviews(), showPreview() and isCutItem()
 331
 332     if (m_view->m_controller->showPreview()) {
 333         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 334         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 335                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 336     }
 337 }
 338
 339 void DolphinColumnWidget::showPreview(const KFileItem& item, const QPixmap& pixmap)
 340 {
 341     // TODO: same implementation as in DolphinView; create helper class
 342     // for generatePreviews(), showPreview() and isCutItem()
 343
 344     Q_ASSERT(!item.isNull());
 345     if (item.url().directory() != m_dirLister->url().path()) {
 346         // the preview job is still working on items of an older URL, hence
 347         // the item is not part of the directory model anymore
 348         return;
 349     }
 350
 351     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 352     if (idx.isValid() && (idx.column() == 0)) {
 353         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 354         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 355             KIconEffect iconEffect;
 356             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 357             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 358         } else {
 359             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 360         }
 361     }
 362 }
 363
 364 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 365 {
 366     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 367     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 368     m_view->m_controller->emitItemEntered(item);
 369 }
 370
 371 void DolphinColumnWidget::activate()
 372 {
 373     if (m_view->hasFocus()) {
 374         setFocus(Qt::OtherFocusReason);
 375     }
 376     m_view->setFocusProxy(this);
 377
 378     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 379     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 380     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 381     if (KGlobalSettings::singleClick()) {
 382         connect(this, SIGNAL(clicked(const QModelIndex&)),
 383                 this, SLOT(triggerItem(const QModelIndex&)));
 384     } else {
 385         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 386                 this, SLOT(triggerItem(const QModelIndex&)));
 387     }
 388
 389     const QColor bgColor = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 390     QPalette palette = viewport()->palette();
 391     palette.setColor(viewport()->backgroundRole(), bgColor);
 392     viewport()->setPalette(palette);
 393
 394     if (!m_childUrl.isEmpty()) {
 395         // assure that the current index is set on the index that represents
 396         // the child URL
 397         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 398         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 399         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 400     }
 401
 402     update();
 403 }
 404
 405 void DolphinColumnWidget::deactivate()
 406 {
 407     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 408     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 409     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 410     if (KGlobalSettings::singleClick()) {
 411         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 412                    this, SLOT(triggerItem(const QModelIndex&)));
 413     } else {
 414         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 415                    this, SLOT(triggerItem(const QModelIndex&)));
 416     }
 417
 418     const QPalette palette = m_view->viewport()->palette();
 419     viewport()->setPalette(palette);
 420
 421     selectionModel()->clear();
 422     update();
 423 }
 424
 425 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 426 {
 427     // TODO: same implementation as in DolphinView; create helper class
 428     // for generatePreviews(), showPreview() and isCutItem()
 429
 430     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 431     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 432
 433     const KUrl& itemUrl = item.url();
 434     KUrl::List::const_iterator it = cutUrls.begin();
 435     const KUrl::List::const_iterator end = cutUrls.end();
 436     while (it != end) {
 437         if (*it == itemUrl) {
 438             return true;
 439         }
 440         ++it;
 441     }
 442
 443     return false;
 444 }
 445
 446 #include "dolphincolumnwidget.moc"