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 #include "dolphin_columnmodesettings.h"
  30 #include "draganddrophelper.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 <kmimetyperesolver.h>
  39 #include <konqmimedata.h>
  40
  41 #include <QAbstractProxyModel>
  42 #include <QApplication>
  43 #include <QClipboard>
  44 #include <QPoint>
  45 #include <QScrollBar>
  46 #include <QTimer>
  47 #include <QTimeLine>
  48
  49 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  50                                          DolphinColumnView* columnView,
  51                                          const KUrl& url) :
  52     QListView(parent),
  53     m_active(true),
  54     m_showPreview(false),
  55     m_view(columnView),
  56     m_url(url),
  57     m_childUrl(),
  58     m_font(),
  59     m_decorationSize(),
  60     m_dirLister(0),
  61     m_dolphinModel(0),
  62     m_proxyModel(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::ScrollBarAlwaysOn);
  70     setSelectionBehavior(SelectItems);
  71     setSelectionMode(QAbstractItemView::ExtendedSelection);
  72     setDragDropMode(QAbstractItemView::DragDrop);
  73     setDropIndicatorShown(false);
  74
  75 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  76 //       check avoids a division by zero happening on versions before 4.3.1.
  77 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  78 //       ereslibre
  79 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  80     setVerticalScrollMode(QListView::ScrollPerPixel);
  81     setHorizontalScrollMode(QListView::ScrollPerPixel);
  82 #endif
  83
  84     // apply the column mode settings to the widget
  85     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  86     Q_ASSERT(settings != 0);
  87
  88     m_font = QFont(settings->fontFamily(), settings->fontSize());
  89     m_font.setItalic(settings->italicFont());
  90     m_font.setBold(settings->boldFont());
  91
  92     const int iconSize = settings->iconSize();
  93     m_decorationSize = 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(this);
 109     m_dirLister->setDelayedMimeTypes(true);
 110     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 111     m_dirLister->setShowingDotFiles(showHiddenFiles);
 112     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 113             this, SLOT(generatePreviews(const KFileItemList&)));
 114
 115     m_dolphinModel = new DolphinModel(this);
 116     m_dolphinModel->setDirLister(m_dirLister);
 117     m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 118
 119     m_proxyModel = new DolphinSortFilterProxyModel(this);
 120     m_proxyModel->setSourceModel(m_dolphinModel);
 121
 122     setModel(m_proxyModel);
 123     new KMimeTypeResolver(this, m_dolphinModel);
 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     if (show != m_showPreview) {
 176         m_dirLister->stop();
 177         m_dirLister->openUrl(m_url, KDirLister::Reload);
 178     }
 179 }
 180
 181 void DolphinColumnWidget::updateBackground()
 182 {
 183     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 184     if (!m_active || !m_view->m_active) {
 185         color.setAlpha(150);
 186     }
 187     QPalette palette = viewport()->palette();
 188     palette.setColor(viewport()->backgroundRole(), color);
 189     viewport()->setPalette(palette);
 190
 191     update();
 192 }
 193
 194 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 195 {
 196     m_proxyModel->setFilterRegExp(nameFilter);
 197 }
 198
 199
 200 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 201 {
 202     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 203     viewOptions.font = m_font;
 204     viewOptions.decorationSize = m_decorationSize;
 205     viewOptions.showDecorationSelected = true;
 206     return viewOptions;
 207 }
 208
 209 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 210 {
 211     DragAndDropHelper::startDrag(this, supportedActions);
 212 }
 213
 214 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 215 {
 216     if (event->mimeData()->hasUrls()) {
 217         event->acceptProposedAction();
 218     }
 219
 220     m_dragging = true;
 221 }
 222
 223 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 224 {
 225     QListView::dragLeaveEvent(event);
 226
 227     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 228     m_dragging = false;
 229     setDirtyRegion(m_dropRect);
 230 }
 231
 232 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 233 {
 234     QListView::dragMoveEvent(event);
 235
 236     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 237     const QModelIndex index = indexAt(event->pos());
 238     setDirtyRegion(m_dropRect);
 239
 240     m_dropRect.setSize(QSize()); // set as invalid
 241     if (index.isValid()) {
 242         const KFileItem item = itemForIndex(index);
 243         if (!item.isNull() && item.isDir()) {
 244             m_dropRect = visualRect(index);
 245         }
 246     }
 247     setDirtyRegion(m_dropRect);
 248 }
 249
 250 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 251 {
 252     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 253     if (!urls.isEmpty()) {
 254         const QModelIndex index = indexAt(event->pos());
 255         const KFileItem item = itemForIndex(index);
 256         m_view->m_controller->indicateDroppedUrls(urls,
 257                                                   url(),
 258                                                   item);
 259         event->acceptProposedAction();
 260     }
 261     QListView::dropEvent(event);
 262     m_dragging = false;
 263 }
 264
 265 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 266 {
 267     if (!m_childUrl.isEmpty()) {
 268         // indicate the shown URL of the next column by highlighting the shown folder item
 269         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 270         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 271         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 272             const QRect itemRect = visualRect(proxyIndex);
 273             QPainter painter(viewport());
 274             painter.save();
 275
 276             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 277             color.setAlpha(32);
 278             painter.setPen(Qt::NoPen);
 279             painter.setBrush(color);
 280             painter.drawRect(itemRect);
 281
 282             painter.restore();
 283         }
 284     }
 285
 286     QListView::paintEvent(event);
 287
 288     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 289     if (m_dragging) {
 290         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 291         DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
 292     }
 293 }
 294
 295 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 296 {
 297     m_view->m_controller->requestActivation();
 298     if (!m_active) {
 299         m_view->requestActivation(this);
 300         m_view->m_controller->triggerUrlChangeRequest(m_url);
 301     }
 302
 303     QListView::mousePressEvent(event);
 304 }
 305
 306 void DolphinColumnWidget::keyPressEvent(QKeyEvent* event)
 307 {
 308     QListView::keyPressEvent(event);
 309
 310     const QItemSelectionModel* selModel = selectionModel();
 311     const QModelIndex currentIndex = selModel->currentIndex();
 312     const bool trigger = currentIndex.isValid()
 313                          && (event->key() == Qt::Key_Return)
 314                          && (selModel->selectedIndexes().count() <= 1);
 315     if (trigger) {
 316         triggerItem(currentIndex);
 317     }
 318 }
 319
 320 void DolphinColumnWidget::contextMenuEvent(QContextMenuEvent* event)
 321 {
 322     if (!m_active) {
 323         m_view->requestActivation(this);
 324         m_view->m_controller->triggerUrlChangeRequest(m_url);
 325     }
 326
 327     QListView::contextMenuEvent(event);
 328
 329     const QModelIndex index = indexAt(event->pos());
 330     if (index.isValid() || m_active) {
 331         // Only open a context menu above an item or if the mouse is above
 332         // the active column.
 333         const QPoint pos = m_view->viewport()->mapFromGlobal(event->globalPos());
 334         m_view->m_controller->triggerContextMenuRequest(pos);
 335     }
 336 }
 337
 338 void DolphinColumnWidget::selectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
 339 {
 340     QListView::selectionChanged(selected, deselected);
 341
 342     QItemSelectionModel* selModel = m_view->selectionModel();
 343     selModel->select(selected, QItemSelectionModel::Select);
 344     selModel->select(deselected, QItemSelectionModel::Deselect);
 345 }
 346
 347 void DolphinColumnWidget::triggerItem(const QModelIndex& index)
 348 {
 349     const KFileItem item = itemForIndex(index);
 350     m_view->m_controller->triggerItem(item);
 351 }
 352
 353 void DolphinColumnWidget::generatePreviews(const KFileItemList& items)
 354 {
 355     // TODO: same implementation as in DolphinView; create helper class
 356     // for generatePreviews(), showPreview() and isCutItem()
 357
 358     if (m_view->m_controller->dolphinView()->showPreview()) {
 359         KIO::PreviewJob* job = KIO::filePreview(items, 128);
 360         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 361                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 362     }
 363 }
 364
 365 void DolphinColumnWidget::showPreview(const KFileItem& item, const QPixmap& pixmap)
 366 {
 367     // TODO: same implementation as in DolphinView; create helper class
 368     // for generatePreviews(), showPreview() and isCutItem()
 369
 370     Q_ASSERT(!item.isNull());
 371     if (item.url().directory() != m_dirLister->url().path()) {
 372         // the preview job is still working on items of an older URL, hence
 373         // the item is not part of the directory model anymore
 374         return;
 375     }
 376
 377     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 378     if (idx.isValid() && (idx.column() == 0)) {
 379         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 380         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 381             KIconEffect iconEffect;
 382             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 383             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 384         } else {
 385             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 386         }
 387     }
 388 }
 389
 390 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 391 {
 392     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 393     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 394     m_view->m_controller->emitItemEntered(item);
 395 }
 396
 397 void DolphinColumnWidget::activate()
 398 {
 399     setFocus(Qt::OtherFocusReason);
 400
 401     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 402     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 403     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 404     if (KGlobalSettings::singleClick()) {
 405         connect(this, SIGNAL(clicked(const QModelIndex&)),
 406                 this, SLOT(triggerItem(const QModelIndex&)));
 407     } else {
 408         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 409                 this, SLOT(triggerItem(const QModelIndex&)));
 410     }
 411
 412     if (!m_childUrl.isEmpty()) {
 413         // assure that the current index is set on the index that represents
 414         // the child URL
 415         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 416         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 417         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 418     }
 419
 420     updateBackground();
 421 }
 422
 423 void DolphinColumnWidget::deactivate()
 424 {
 425     clearFocus();
 426
 427     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 428     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 429     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 430     if (KGlobalSettings::singleClick()) {
 431         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 432                    this, SLOT(triggerItem(const QModelIndex&)));
 433     } else {
 434         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 435                    this, SLOT(triggerItem(const QModelIndex&)));
 436     }
 437
 438     selectionModel()->clear();
 439     updateBackground();
 440 }
 441
 442 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 443 {
 444     // TODO: same implementation as in DolphinView; create helper class
 445     // for generatePreviews(), showPreview() and isCutItem()
 446
 447     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 448     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 449
 450     const KUrl& itemUrl = item.url();
 451     KUrl::List::const_iterator it = cutUrls.begin();
 452     const KUrl::List::const_iterator end = cutUrls.end();
 453     while (it != end) {
 454         if (*it == itemUrl) {
 455             return true;
 456         }
 457         ++it;
 458     }
 459
 460     return false;
 461 }
 462
 463 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 464 {
 465     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 466     return m_dolphinModel->itemForIndex(dirIndex);
 467 }
 468
 469
 470 #include "dolphincolumnwidget.moc"