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 <QApplication>
  41 #include <QClipboard>
  42 #include <QPainter>
  43 #include <QPoint>
  44
  45 DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
  46                                          DolphinColumnView* columnView,
  47                                          const KUrl& url) :
  48     QListView(parent),
  49     m_active(true),
  50     m_showPreview(false),
  51     m_view(columnView),
  52     m_url(url),
  53     m_childUrl(),
  54     m_font(),
  55     m_decorationSize(),
  56     m_dirLister(0),
  57     m_dolphinModel(0),
  58     m_proxyModel(0),
  59     m_previewJob(0),
  60     m_dragging(false),
  61     m_dropRect()
  62 {
  63     setMouseTracking(true);
  64     viewport()->setAttribute(Qt::WA_Hover);
  65     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  66     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  67     setSelectionBehavior(SelectItems);
  68     setSelectionMode(QAbstractItemView::ExtendedSelection);
  69     setDragDropMode(QAbstractItemView::DragDrop);
  70     setDropIndicatorShown(false);
  71
  72 // TODO: Remove this check when 4.3.2 is released and KDE requires it... this
  73 //       check avoids a division by zero happening on versions before 4.3.1.
  74 //       Right now KDE in theory can be shipped with Qt 4.3.0 and above.
  75 //       ereslibre
  76 #if (QT_VERSION >= QT_VERSION_CHECK(4, 3, 2) || defined(QT_KDE_QT_COPY))
  77     setVerticalScrollMode(QListView::ScrollPerPixel);
  78     setHorizontalScrollMode(QListView::ScrollPerPixel);
  79 #endif
  80
  81     // apply the column mode settings to the widget
  82     const ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
  83     Q_ASSERT(settings != 0);
  84
  85     m_font = QFont(settings->fontFamily(), settings->fontSize());
  86     m_font.setItalic(settings->italicFont());
  87     m_font.setBold(settings->boldFont());
  88
  89     const int iconSize = settings->iconSize();
  90     m_decorationSize = QSize(iconSize, iconSize);
  91
  92     KFileItemDelegate* delegate = new KFileItemDelegate(this);
  93     setItemDelegate(delegate);
  94
  95     activate();
  96
  97     connect(this, SIGNAL(viewportEntered()),
  98             m_view->m_controller, SLOT(emitViewportEntered()));
  99     connect(this, SIGNAL(entered(const QModelIndex&)),
 100             this, SLOT(slotEntered(const QModelIndex&)));
 101
 102     //m_dirLister = new DolphinDirLister(); TODO
 103     m_dirLister = new KDirLister();
 104     m_dirLister->setAutoUpdate(true);
 105     m_dirLister->setMainWindow(this);
 106     m_dirLister->setDelayedMimeTypes(true);
 107     const bool showHiddenFiles = m_view->m_controller->dolphinView()->showHiddenFiles();
 108     m_dirLister->setShowingDotFiles(showHiddenFiles);
 109     connect(m_dirLister, SIGNAL(newItems(const KFileItemList&)),
 110             this, SLOT(generatePreviews(const KFileItemList&)));
 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
 119     setModel(m_proxyModel);
 120     new KMimeTypeResolver(this, m_dolphinModel);
 121
 122     m_dirLister->openUrl(url, KDirLister::NoFlags);
 123 }
 124
 125 DolphinColumnWidget::~DolphinColumnWidget()
 126 {
 127     delete m_proxyModel;
 128     m_proxyModel = 0;
 129     delete m_dolphinModel;
 130     m_dolphinModel = 0;
 131     m_dirLister = 0; // deleted by m_dolphinModel
 132
 133     if (m_previewJob != 0) {
 134         m_previewJob->kill();
 135         m_previewJob = 0;
 136     }
 137 }
 138
 139 void DolphinColumnWidget::setDecorationSize(const QSize& size)
 140 {
 141     m_decorationSize = size;
 142     doItemsLayout();
 143 }
 144
 145 void DolphinColumnWidget::setActive(bool active)
 146 {
 147     if (m_active == active) {
 148         return;
 149     }
 150
 151     m_active = active;
 152
 153     if (active) {
 154         activate();
 155     } else {
 156         deactivate();
 157     }
 158 }
 159
 160 void DolphinColumnWidget::reload()
 161 {
 162     m_dirLister->stop();
 163     m_dirLister->openUrl(m_url, KDirLister::Reload);
 164 }
 165
 166 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 167 {
 168     if (show != m_dirLister->showingDotFiles()) {
 169         m_dirLister->setShowingDotFiles(show);
 170         m_dirLister->stop();
 171         m_dirLister->openUrl(m_url, KDirLister::Reload);
 172     }
 173 }
 174
 175 void DolphinColumnWidget::setShowPreview(bool show)
 176 {
 177     if (show != m_showPreview) {
 178         m_dirLister->stop();
 179         m_dirLister->openUrl(m_url, KDirLister::Reload);
 180     }
 181 }
 182
 183 void DolphinColumnWidget::updateBackground()
 184 {
 185     QColor color = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
 186     if (!m_active || !m_view->m_active) {
 187         color.setAlpha(150);
 188     }
 189     QPalette palette = viewport()->palette();
 190     palette.setColor(viewport()->backgroundRole(), color);
 191     viewport()->setPalette(palette);
 192
 193     update();
 194 }
 195
 196 void DolphinColumnWidget::setNameFilter(const QString& nameFilter)
 197 {
 198     m_proxyModel->setFilterRegExp(nameFilter);
 199 }
 200
 201
 202 QStyleOptionViewItem DolphinColumnWidget::viewOptions() const
 203 {
 204     QStyleOptionViewItem viewOptions = QListView::viewOptions();
 205     viewOptions.font = m_font;
 206     viewOptions.decorationSize = m_decorationSize;
 207     viewOptions.showDecorationSelected = true;
 208     return viewOptions;
 209 }
 210
 211 void DolphinColumnWidget::startDrag(Qt::DropActions supportedActions)
 212 {
 213     DragAndDropHelper::startDrag(this, supportedActions);
 214 }
 215
 216 void DolphinColumnWidget::dragEnterEvent(QDragEnterEvent* event)
 217 {
 218     if (event->mimeData()->hasUrls()) {
 219         event->acceptProposedAction();
 220     }
 221
 222     m_dragging = true;
 223 }
 224
 225 void DolphinColumnWidget::dragLeaveEvent(QDragLeaveEvent* event)
 226 {
 227     QListView::dragLeaveEvent(event);
 228
 229     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 230     m_dragging = false;
 231     setDirtyRegion(m_dropRect);
 232 }
 233
 234 void DolphinColumnWidget::dragMoveEvent(QDragMoveEvent* event)
 235 {
 236     QListView::dragMoveEvent(event);
 237
 238     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 239     const QModelIndex index = indexAt(event->pos());
 240     setDirtyRegion(m_dropRect);
 241
 242     m_dropRect.setSize(QSize()); // set as invalid
 243     if (index.isValid()) {
 244         const KFileItem item = itemForIndex(index);
 245         if (!item.isNull() && item.isDir()) {
 246             m_dropRect = visualRect(index);
 247         }
 248     }
 249     setDirtyRegion(m_dropRect);
 250
 251     bool destIsDir = false;
 252     if (index.isValid()) {
 253         const KFileItem item = itemForIndex(index);
 254         if (!item.isNull() && item.isDir()) {
 255             m_dropRect = visualRect(index);
 256             destIsDir = true;
 257         }
 258     } else { // dropping on viewport
 259         destIsDir = true;
 260     }
 261     if (destIsDir && event->mimeData()->hasUrls()) {
 262         event->acceptProposedAction();
 263     }
 264 }
 265
 266 void DolphinColumnWidget::dropEvent(QDropEvent* event)
 267 {
 268     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 269     if (!urls.isEmpty()) {
 270         const QModelIndex index = indexAt(event->pos());
 271         const KFileItem item = itemForIndex(index);
 272         m_view->m_controller->indicateDroppedUrls(urls,
 273                                                   url(),
 274                                                   item);
 275         event->acceptProposedAction();
 276     }
 277     QListView::dropEvent(event);
 278     m_dragging = false;
 279 }
 280
 281 void DolphinColumnWidget::paintEvent(QPaintEvent* event)
 282 {
 283     if (!m_childUrl.isEmpty()) {
 284         // indicate the shown URL of the next column by highlighting the shown folder item
 285         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 286         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 287         if (proxyIndex.isValid() && !selectionModel()->isSelected(proxyIndex)) {
 288             const QRect itemRect = visualRect(proxyIndex);
 289             QPainter painter(viewport());
 290             painter.save();
 291
 292             QColor color = KColorScheme(QPalette::Active, KColorScheme::View).foreground().color();
 293             color.setAlpha(32);
 294             painter.setPen(Qt::NoPen);
 295             painter.setBrush(color);
 296             painter.drawRect(itemRect);
 297
 298             painter.restore();
 299         }
 300     }
 301
 302     QListView::paintEvent(event);
 303
 304     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 305     if (m_dragging) {
 306         const QBrush& brush = viewOptions().palette.brush(QPalette::Normal, QPalette::Highlight);
 307         DragAndDropHelper::drawHoverIndication(this, m_dropRect, brush);
 308     }
 309 }
 310
 311 void DolphinColumnWidget::mousePressEvent(QMouseEvent* event)
 312 {
 313     m_view->m_controller->requestActivation();
 314     if (!m_active) {
 315         m_view->requestActivation(this);
 316         m_view->m_controller->triggerUrlChangeRequest(m_url);
 317     }
 318
 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::generatePreviews(const KFileItemList& items)
 370 {
 371     // TODO: same implementation as in DolphinView; create helper class
 372     // for generatePreviews(), showPreview() and isCutItem()
 373
 374     if (m_view->m_controller->dolphinView()->showPreview()) {
 375         if (m_previewJob != 0) {
 376             m_previewJob->kill();
 377             m_previewJob = 0;
 378         }
 379
 380         m_previewJob = KIO::filePreview(items, 128);
 381         connect(m_previewJob, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 382                 this, SLOT(replaceIcon(const KFileItem&, const QPixmap&)));
 383         connect(m_previewJob, SIGNAL(finished(KJob*)),
 384                 this, SLOT(slotPreviewJobFinished(KJob*)));
 385     }
 386 }
 387
 388 void DolphinColumnWidget::replaceIcon(const KFileItem& item, const QPixmap& pixmap)
 389 {
 390     // TODO: same implementation as in DolphinView; create helper class
 391     // for generatePreviews(), showPreview() and isCutItem()
 392
 393     Q_ASSERT(!item.isNull());
 394     const bool showPreview = m_view->m_controller->dolphinView()->showPreview();
 395     if (!showPreview || (item.url().directory() != m_dirLister->url().path())) {
 396         // the preview job is still working on items of an older URL, hence
 397         // the item is not part of the directory model anymore
 398         return;
 399     }
 400
 401     const QModelIndex idx = m_dolphinModel->indexForItem(item);
 402     if (idx.isValid() && (idx.column() == 0)) {
 403         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 404         if (KonqMimeData::decodeIsCutSelection(mimeData) && isCutItem(item)) {
 405             KIconEffect iconEffect;
 406             const QPixmap cutPixmap = iconEffect.apply(pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 407             m_dolphinModel->setData(idx, QIcon(cutPixmap), Qt::DecorationRole);
 408         } else {
 409             m_dolphinModel->setData(idx, QIcon(pixmap), Qt::DecorationRole);
 410         }
 411     }
 412 }
 413
 414 void DolphinColumnWidget::slotEntered(const QModelIndex& index)
 415 {
 416     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 417     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 418     m_view->m_controller->emitItemEntered(item);
 419 }
 420
 421 void DolphinColumnWidget::slotPreviewJobFinished(KJob* job)
 422 {
 423     Q_ASSERT(job == m_previewJob);
 424     m_previewJob = 0;
 425 }
 426
 427 void DolphinColumnWidget::activate()
 428 {
 429     setFocus(Qt::OtherFocusReason);
 430
 431     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 432     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 433     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 434     if (KGlobalSettings::singleClick()) {
 435         connect(this, SIGNAL(clicked(const QModelIndex&)),
 436                 this, SLOT(triggerItem(const QModelIndex&)));
 437     } else {
 438         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 439                 this, SLOT(triggerItem(const QModelIndex&)));
 440     }
 441
 442     if (!m_childUrl.isEmpty()) {
 443         // assure that the current index is set on the index that represents
 444         // the child URL
 445         const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_childUrl);
 446         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 447         selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::Current);
 448     }
 449
 450     updateBackground();
 451 }
 452
 453 void DolphinColumnWidget::deactivate()
 454 {
 455     clearFocus();
 456
 457     // TODO: Connecting to the signal 'activated()' is not possible, as kstyle
 458     // does not forward the single vs. doubleclick to it yet (KDE 4.1?). Hence it is
 459     // necessary connecting the signal 'singleClick()' or 'doubleClick'.
 460     if (KGlobalSettings::singleClick()) {
 461         disconnect(this, SIGNAL(clicked(const QModelIndex&)),
 462                    this, SLOT(triggerItem(const QModelIndex&)));
 463     } else {
 464         disconnect(this, SIGNAL(doubleClicked(const QModelIndex&)),
 465                    this, SLOT(triggerItem(const QModelIndex&)));
 466     }
 467
 468     selectionModel()->clear();
 469     updateBackground();
 470 }
 471
 472 bool DolphinColumnWidget::isCutItem(const KFileItem& item) const
 473 {
 474     // TODO: same implementation as in DolphinView; create helper class
 475     // for generatePreviews(), showPreview() and isCutItem()
 476
 477     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
 478     const KUrl::List cutUrls = KUrl::List::fromMimeData(mimeData);
 479
 480     const KUrl& itemUrl = item.url();
 481     KUrl::List::const_iterator it = cutUrls.begin();
 482     const KUrl::List::const_iterator end = cutUrls.end();
 483     while (it != end) {
 484         if (*it == itemUrl) {
 485             return true;
 486         }
 487         ++it;
 488     }
 489
 490     return false;
 491 }
 492
 493 KFileItem DolphinColumnWidget::itemForIndex(const QModelIndex& index) const
 494 {
 495     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 496     return m_dolphinModel->itemForIndex(dirIndex);
 497 }
 498
 499
 500 #include "dolphincolumnwidget.moc"