src/dolphindetailsview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz                                      *
   3  *   peter.penz@gmx.at                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #include "dolphindetailsview.h"
  22
  23 #include "dolphincontroller.h"
  24 #include "dolphinsettings.h"
  25 #include "dolphinsortfilterproxymodel.h"
  26 #include "viewproperties.h"
  27
  28 #include "dolphin_detailsmodesettings.h"
  29
  30 #include <kdirmodel.h>
  31
  32 #include <QApplication>
  33 #include <QHeaderView>
  34 #include <QRubberBand>
  35 #include <QPainter>
  36 #include <QScrollBar>
  37
  38 DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
  39     QTreeView(parent),
  40     m_controller(controller),
  41     m_dragging(false),
  42     m_showElasticBand(false),
  43     m_elasticBandOrigin(),
  44     m_elasticBandDestination()
  45 {
  46     Q_ASSERT(controller != 0);
  47
  48     setAcceptDrops(true);
  49     setRootIsDecorated(false);
  50     setSortingEnabled(true);
  51     setUniformRowHeights(true);
  52     setSelectionBehavior(SelectItems);
  53     setDragDropMode(QAbstractItemView::DragDrop);
  54     setDropIndicatorShown(false);
  55
  56     setMouseTracking(true);
  57     viewport()->setAttribute(Qt::WA_Hover);
  58
  59     const ViewProperties props(controller->url());
  60     setSortIndicatorSection(props.sorting());
  61     setSortIndicatorOrder(props.sortOrder());
  62
  63     connect(header(), SIGNAL(sectionClicked(int)),
  64             this, SLOT(synchronizeSortingState(int)));
  65
  66     connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
  67             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
  68     connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
  69             this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
  70
  71     if (KGlobalSettings::singleClick()) {
  72         connect(this, SIGNAL(clicked(const QModelIndex&)),
  73                 controller, SLOT(triggerItem(const QModelIndex&)));
  74     } else {
  75         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  76                 controller, SLOT(triggerItem(const QModelIndex&)));
  77     }
  78     connect(this, SIGNAL(activated(const QModelIndex&)),
  79             controller, SLOT(triggerItem(const QModelIndex&)));
  80     connect(this, SIGNAL(entered(const QModelIndex&)),
  81             this, SLOT(slotEntered(const QModelIndex&)));
  82     connect(this, SIGNAL(viewportEntered()),
  83             controller, SLOT(emitViewportEntered()));
  84     connect(controller, SIGNAL(zoomIn()),
  85             this, SLOT(zoomIn()));
  86     connect(controller, SIGNAL(zoomOut()),
  87             this, SLOT(zoomOut()));
  88
  89     // apply the details mode settings to the widget
  90     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
  91     Q_ASSERT(settings != 0);
  92
  93     m_viewOptions = QTreeView::viewOptions();
  94
  95     QFont font(settings->fontFamily(), settings->fontSize());
  96     font.setItalic(settings->italicFont());
  97     font.setBold(settings->boldFont());
  98     m_viewOptions.font = font;
  99
 100     updateDecorationSize();
 101 }
 102
 103 DolphinDetailsView::~DolphinDetailsView()
 104 {
 105 }
 106
 107 bool DolphinDetailsView::event(QEvent* event)
 108 {
 109     if (event->type() == QEvent::Polish) {
 110         // Assure that by respecting the available width that:
 111         // - the 'Name' column is stretched as large as possible
 112         // - the remaining columns are as small as possible
 113         QHeaderView* headerView = header();
 114         headerView->setStretchLastSection(false);
 115         headerView->setResizeMode(QHeaderView::ResizeToContents);
 116         headerView->setResizeMode(0, QHeaderView::Stretch);
 117
 118         // hide columns if this is indicated by the settings
 119         const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 120         Q_ASSERT(settings != 0);
 121         if (!settings->showDate()) {
 122             hideColumn(KDirModel::ModifiedTime);
 123         }
 124
 125         if (!settings->showPermissions()) {
 126             hideColumn(KDirModel::Permissions);
 127         }
 128
 129         if (!settings->showOwner()) {
 130             hideColumn(KDirModel::Owner);
 131         }
 132
 133         if (!settings->showGroup()) {
 134             hideColumn(KDirModel::Group);
 135         }
 136
 137         if (!settings->showType()) {
 138             hideColumn(KDirModel::Type);
 139         }
 140     }
 141
 142     return QTreeView::event(event);
 143 }
 144
 145 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 146 {
 147     return m_viewOptions;
 148 }
 149
 150 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 151 {
 152     QTreeView::contextMenuEvent(event);
 153     m_controller->triggerContextMenuRequest(event->pos());
 154 }
 155
 156 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 157 {
 158     if (!indexAt(event->pos()).isValid()) {
 159         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 160         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 161             clearSelection();
 162         }
 163     }
 164
 165     QTreeView::mousePressEvent(event);
 166
 167     if (event->button() == Qt::LeftButton) {
 168         m_showElasticBand = true;
 169
 170         const QPoint pos(contentsPos());
 171         m_elasticBandOrigin = event->pos();
 172         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 173         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 174         m_elasticBandDestination = event->pos();
 175     }
 176 }
 177
 178 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 179 {
 180     QTreeView::mouseMoveEvent(event);
 181     if (m_showElasticBand) {
 182         updateElasticBand();
 183     }
 184 }
 185
 186 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 187 {
 188     QTreeView::mouseReleaseEvent(event);
 189     if (m_showElasticBand) {
 190         updateElasticBand();
 191         m_showElasticBand = false;
 192     }
 193     m_controller->triggerActivation();
 194 }
 195
 196 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 197 {
 198     if (event->mimeData()->hasUrls()) {
 199         event->acceptProposedAction();
 200     }
 201
 202     if (m_showElasticBand) {
 203         updateElasticBand();
 204         m_showElasticBand = false;
 205     }
 206     m_dragging = true;
 207 }
 208
 209 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 210 {
 211     QTreeView::dragLeaveEvent(event);
 212
 213     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 214     m_dragging = false;
 215     setDirtyRegion(m_dropRect);
 216 }
 217
 218 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 219 {
 220     QTreeView::dragMoveEvent(event);
 221
 222     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 223     setDirtyRegion(m_dropRect);
 224     const QModelIndex index = indexAt(event->pos());
 225     if (!index.isValid() || (index.column() != KDirModel::Name)) {
 226         m_dragging = false;
 227     } else {
 228         m_dragging = true;
 229         m_dropRect = visualRect(index);
 230         setDirtyRegion(m_dropRect);
 231     }
 232 }
 233
 234 void DolphinDetailsView::dropEvent(QDropEvent* event)
 235 {
 236     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 237     if (!urls.isEmpty()) {
 238         event->acceptProposedAction();
 239         m_controller->indicateDroppedUrls(urls,
 240                                           indexAt(event->pos()),
 241                                           event->source());
 242     }
 243     QTreeView::dropEvent(event);
 244     m_dragging = false;
 245 }
 246
 247 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 248 {
 249     QTreeView::paintEvent(event);
 250     if (m_showElasticBand) {
 251         // The following code has been taken from QListView
 252         // and adapted to DolphinDetailsView.
 253         // (C) 1992-2007 Trolltech ASA
 254         QStyleOptionRubberBand opt;
 255         opt.initFrom(this);
 256         opt.shape = QRubberBand::Rectangle;
 257         opt.opaque = false;
 258         opt.rect = elasticBandRect();
 259
 260         QPainter painter(viewport());
 261         painter.save();
 262         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 263         painter.restore();
 264     }
 265
 266     if (m_dragging) {
 267         // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 268         QPainter painter(viewport());
 269         painter.save();
 270         QBrush brush(m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight));
 271         QColor color = brush.color();
 272         color.setAlpha(64);
 273         brush.setColor(color);
 274         painter.fillRect(m_dropRect, brush);
 275         painter.restore();
 276     }
 277 }
 278
 279 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 280 {
 281     QHeaderView* headerView = header();
 282     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 283 }
 284
 285 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 286 {
 287     QHeaderView* headerView = header();
 288     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 289 }
 290
 291 void DolphinDetailsView::synchronizeSortingState(int column)
 292 {
 293     // The sorting has already been changed in QTreeView if this slot is
 294     // invoked, but Dolphin is not informed about this.
 295     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 296     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 297     m_controller->indicateSortingChange(sorting);
 298     m_controller->indicateSortOrderChange(sortOrder);
 299 }
 300
 301 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 302 {
 303     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 304     const int nameColumnWidth = header()->sectionSize(KDirModel::Name);
 305     if (pos.x() < nameColumnWidth) {
 306         m_controller->emitItemEntered(index);
 307     }
 308     else {
 309         m_controller->emitViewportEntered();
 310     }
 311 }
 312
 313 void DolphinDetailsView::updateElasticBand()
 314 {
 315     Q_ASSERT(m_showElasticBand);
 316     QRect dirtyRegion(elasticBandRect());
 317     m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 318     dirtyRegion = dirtyRegion.united(elasticBandRect());
 319     setDirtyRegion(dirtyRegion);
 320 }
 321
 322 void DolphinDetailsView::zoomIn()
 323 {
 324     if (isZoomInPossible()) {
 325         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 326         // TODO: get rid of K3Icon sizes
 327         switch (settings->iconSize()) {
 328         case K3Icon::SizeSmall:  settings->setIconSize(K3Icon::SizeMedium); break;
 329         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeLarge); break;
 330         default: Q_ASSERT(false); break;
 331         }
 332         updateDecorationSize();
 333     }
 334 }
 335
 336 void DolphinDetailsView::zoomOut()
 337 {
 338     if (isZoomOutPossible()) {
 339         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 340         // TODO: get rid of K3Icon sizes
 341         switch (settings->iconSize()) {
 342         case K3Icon::SizeLarge:  settings->setIconSize(K3Icon::SizeMedium); break;
 343         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeSmall); break;
 344         default: Q_ASSERT(false); break;
 345         }
 346         updateDecorationSize();
 347     }
 348 }
 349
 350 bool DolphinDetailsView::isZoomInPossible() const
 351 {
 352     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 353     return settings->iconSize() < K3Icon::SizeLarge;
 354 }
 355
 356 bool DolphinDetailsView::isZoomOutPossible() const
 357 {
 358     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 359     return settings->iconSize() > K3Icon::SizeSmall;
 360 }
 361
 362 void DolphinDetailsView::updateDecorationSize()
 363 {
 364     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 365     const int iconSize = settings->iconSize();
 366     m_viewOptions.decorationSize = QSize(iconSize, iconSize);
 367
 368     m_controller->setZoomInPossible(isZoomInPossible());
 369     m_controller->setZoomOutPossible(isZoomOutPossible());
 370
 371     doItemsLayout();
 372 }
 373
 374 QPoint DolphinDetailsView::contentsPos() const
 375 {
 376     // implementation note: the horizonal position is ignored currently, as no
 377     // horizontal scrolling is done anyway during a selection
 378     const QScrollBar* scrollbar = verticalScrollBar();
 379     Q_ASSERT(scrollbar != 0);
 380
 381     const int maxHeight = maximumViewportSize().height();
 382     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 383     const int visibleHeight = model()->rowCount() + 1 - height;
 384     if (visibleHeight <= 0) {
 385         return QPoint(0, 0);
 386     }
 387
 388     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 389     return QPoint(0, y);
 390 }
 391
 392 QRect DolphinDetailsView::elasticBandRect() const
 393 {
 394     const QPoint pos(contentsPos());
 395     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 396     return QRect(topLeft, m_elasticBandDestination).normalized();
 397 }
 398
 399 #include "dolphindetailsview.moc"