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 #include <kfileitemdelegate.h>
  32
  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_showElasticBand(false),
  42     m_elasticBandOrigin(),
  43     m_elasticBandDestination()
  44 {
  45     Q_ASSERT(controller != 0);
  46
  47     setAcceptDrops(true);
  48     setRootIsDecorated(false);
  49     setSortingEnabled(true);
  50     setUniformRowHeights(true);
  51     setSelectionBehavior(SelectItems);
  52     setDragDropMode(QAbstractItemView::DragDrop);
  53     setDropIndicatorShown(false);
  54
  55     setMouseTracking(true);
  56     viewport()->setAttribute(Qt::WA_Hover);
  57
  58     const ViewProperties props(controller->url());
  59     setSortIndicatorSection(props.sorting());
  60     setSortIndicatorOrder(props.sortOrder());
  61
  62     connect(header(), SIGNAL(sectionClicked(int)),
  63             this, SLOT(synchronizeSortingState(int)));
  64
  65     connect(parent, SIGNAL(sortingChanged(DolphinView::Sorting)),
  66             this, SLOT(setSortIndicatorSection(DolphinView::Sorting)));
  67     connect(parent, SIGNAL(sortOrderChanged(Qt::SortOrder)),
  68             this, SLOT(setSortIndicatorOrder(Qt::SortOrder)));
  69
  70     if (KGlobalSettings::singleClick()) {
  71         connect(this, SIGNAL(clicked(const QModelIndex&)),
  72                 controller, SLOT(triggerItem(const QModelIndex&)));
  73     } else {
  74         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  75                 controller, SLOT(triggerItem(const QModelIndex&)));
  76     }
  77     connect(this, SIGNAL(activated(const QModelIndex&)),
  78             controller, SLOT(triggerItem(const QModelIndex&)));
  79     connect(this, SIGNAL(entered(const QModelIndex&)),
  80             this, SLOT(slotEntered(const QModelIndex&)));
  81     connect(this, SIGNAL(viewportEntered()),
  82             controller, SLOT(emitViewportEntered()));
  83     connect(controller, SIGNAL(zoomIn()),
  84             this, SLOT(zoomIn()));
  85     connect(controller, SIGNAL(zoomOut()),
  86             this, SLOT(zoomOut()));
  87
  88     // apply the details mode settings to the widget
  89     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
  90     Q_ASSERT(settings != 0);
  91
  92     m_viewOptions = QTreeView::viewOptions();
  93
  94     QFont font(settings->fontFamily(), settings->fontSize());
  95     font.setItalic(settings->italicFont());
  96     font.setBold(settings->boldFont());
  97     m_viewOptions.font = font;
  98
  99     updateDecorationSize();
 100 }
 101
 102 DolphinDetailsView::~DolphinDetailsView()
 103 {
 104 }
 105
 106 bool DolphinDetailsView::event(QEvent* event)
 107 {
 108     if (event->type() == QEvent::Polish) {
 109         // Assure that by respecting the available width that:
 110         // - the 'Name' column is stretched as large as possible
 111         // - the remaining columns are as small as possible
 112         QHeaderView* headerView = header();
 113         headerView->setStretchLastSection(false);
 114         headerView->setResizeMode(QHeaderView::ResizeToContents);
 115         headerView->setResizeMode(0, QHeaderView::Stretch);
 116
 117         // hide columns if this is indicated by the settings
 118         const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 119         Q_ASSERT(settings != 0);
 120         if (!settings->showDate()) {
 121             hideColumn(KDirModel::ModifiedTime);
 122         }
 123
 124         if (!settings->showPermissions()) {
 125             hideColumn(KDirModel::Permissions);
 126         }
 127
 128         if (!settings->showOwner()) {
 129             hideColumn(KDirModel::Owner);
 130         }
 131
 132         if (!settings->showGroup()) {
 133             hideColumn(KDirModel::Group);
 134         }
 135
 136         if (!settings->showType()) {
 137             hideColumn(KDirModel::Type);
 138         }
 139     }
 140
 141     return QTreeView::event(event);
 142 }
 143
 144 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 145 {
 146     return m_viewOptions;
 147 }
 148
 149 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 150 {
 151     QTreeView::contextMenuEvent(event);
 152     m_controller->triggerContextMenuRequest(event->pos());
 153 }
 154
 155 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 156 {
 157     QTreeView::mousePressEvent(event);
 158
 159     if (event->button() == Qt::LeftButton) {
 160         m_showElasticBand = true;
 161
 162         const QPoint pos(contentsPos());
 163         m_elasticBandOrigin = event->pos();
 164         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 165         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 166         m_elasticBandDestination = event->pos();
 167     }
 168 }
 169
 170 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 171 {
 172     QTreeView::mouseMoveEvent(event);
 173     if (m_showElasticBand) {
 174         updateElasticBand();
 175     }
 176 }
 177
 178 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 179 {
 180     QTreeView::mouseReleaseEvent(event);
 181     updateElasticBand();
 182     m_showElasticBand = false;
 183     m_controller->triggerActivation();
 184 }
 185
 186 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 187 {
 188     if (event->mimeData()->hasUrls()) {
 189         event->acceptProposedAction();
 190     }
 191     updateElasticBand();
 192     m_showElasticBand = false;
 193 }
 194
 195 void DolphinDetailsView::dropEvent(QDropEvent* event)
 196 {
 197     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 198     if (!urls.isEmpty()) {
 199         event->acceptProposedAction();
 200         m_controller->indicateDroppedUrls(urls,
 201                                           indexAt(event->pos()),
 202                                           event->source());
 203     }
 204     QTreeView::dropEvent(event);
 205 }
 206
 207 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 208 {
 209     QTreeView::paintEvent(event);
 210     if (m_showElasticBand) {
 211         // The following code has been taken from QListView
 212         // and adapted to DolphinDetailsView.
 213         // (C) 1992-2007 Trolltech ASA
 214         QStyleOptionRubberBand opt;
 215         opt.initFrom(this);
 216         opt.shape = QRubberBand::Rectangle;
 217         opt.opaque = false;
 218         opt.rect = elasticBandRect();
 219
 220         QPainter painter(viewport());
 221         painter.save();
 222         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 223         painter.restore();
 224     }
 225 }
 226
 227 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 228 {
 229     QHeaderView* headerView = header();
 230     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 231 }
 232
 233 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 234 {
 235     QHeaderView* headerView = header();
 236     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 237 }
 238
 239 void DolphinDetailsView::synchronizeSortingState(int column)
 240 {
 241     // The sorting has already been changed in QTreeView if this slot is
 242     // invoked, but Dolphin is not informed about this.
 243     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 244     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 245     m_controller->indicateSortingChange(sorting);
 246     m_controller->indicateSortOrderChange(sortOrder);
 247 }
 248
 249 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 250 {
 251     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 252     const int nameColumnWidth = header()->sectionSize(KDirModel::Name);
 253     if (pos.x() < nameColumnWidth) {
 254         m_controller->emitItemEntered(index);
 255     }
 256     else {
 257         m_controller->emitViewportEntered();
 258     }
 259 }
 260
 261 void DolphinDetailsView::updateElasticBand()
 262 {
 263     Q_ASSERT(m_showElasticBand);
 264     QRect dirtyRegion(elasticBandRect());
 265     m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 266     dirtyRegion = dirtyRegion.united(elasticBandRect());
 267     setDirtyRegion(dirtyRegion);
 268 }
 269
 270 void DolphinDetailsView::zoomIn()
 271 {
 272     if (isZoomInPossible()) {
 273         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 274         // TODO: get rid of K3Icon sizes
 275         switch (settings->iconSize()) {
 276         case K3Icon::SizeSmall:  settings->setIconSize(K3Icon::SizeMedium); break;
 277         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeLarge); break;
 278         default: Q_ASSERT(false); break;
 279         }
 280         updateDecorationSize();
 281     }
 282 }
 283
 284 void DolphinDetailsView::zoomOut()
 285 {
 286     if (isZoomOutPossible()) {
 287         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 288         // TODO: get rid of K3Icon sizes
 289         switch (settings->iconSize()) {
 290         case K3Icon::SizeLarge:  settings->setIconSize(K3Icon::SizeMedium); break;
 291         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeSmall); break;
 292         default: Q_ASSERT(false); break;
 293         }
 294         updateDecorationSize();
 295     }
 296 }
 297
 298 bool DolphinDetailsView::isZoomInPossible() const
 299 {
 300     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 301     return settings->iconSize() < K3Icon::SizeLarge;
 302 }
 303
 304 bool DolphinDetailsView::isZoomOutPossible() const
 305 {
 306     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 307     return settings->iconSize() > K3Icon::SizeSmall;
 308 }
 309
 310 void DolphinDetailsView::updateDecorationSize()
 311 {
 312     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 313     const int iconSize = settings->iconSize();
 314     m_viewOptions.decorationSize = QSize(iconSize, iconSize);
 315
 316     m_controller->setZoomInPossible(isZoomInPossible());
 317     m_controller->setZoomOutPossible(isZoomOutPossible());
 318
 319     doItemsLayout();
 320 }
 321
 322 QPoint DolphinDetailsView::contentsPos() const
 323 {
 324     // implementation note: the horizonal position is ignored currently, as no
 325     // horizontal scrolling is done anyway during a selection
 326     const QScrollBar* scrollbar = verticalScrollBar();
 327     Q_ASSERT(scrollbar != 0);
 328
 329     const int maxHeight = maximumViewportSize().height();
 330     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 331     const int visibleHeight = model()->rowCount() + 1 - height;
 332     if (visibleHeight <= 0) {
 333         return QPoint(0, 0);
 334     }
 335
 336     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 337     return QPoint(0, y);
 338 }
 339
 340 QRect DolphinDetailsView::elasticBandRect() const
 341 {
 342     const QPoint pos(contentsPos());
 343     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 344     return QRect(topLeft, m_elasticBandDestination).normalized();
 345 }
 346
 347 #include "dolphindetailsview.moc"