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