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(entered(const QModelIndex&)),
  79             this, SLOT(slotEntered(const QModelIndex&)));
  80     connect(this, SIGNAL(viewportEntered()),
  81             controller, SLOT(emitViewportEntered()));
  82     connect(controller, SIGNAL(zoomIn()),
  83             this, SLOT(zoomIn()));
  84     connect(controller, SIGNAL(zoomOut()),
  85             this, SLOT(zoomOut()));
  86
  87     // apply the details mode settings to the widget
  88     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
  89     Q_ASSERT(settings != 0);
  90
  91     m_viewOptions = QTreeView::viewOptions();
  92
  93     QFont font(settings->fontFamily(), settings->fontSize());
  94     font.setItalic(settings->italicFont());
  95     font.setBold(settings->boldFont());
  96     m_viewOptions.font = font;
  97
  98     updateDecorationSize();
  99 }
 100
 101 DolphinDetailsView::~DolphinDetailsView()
 102 {
 103 }
 104
 105 bool DolphinDetailsView::event(QEvent* event)
 106 {
 107     if (event->type() == QEvent::Polish) {
 108         // Assure that by respecting the available width that:
 109         // - the 'Name' column is stretched as large as possible
 110         // - the remaining columns are as small as possible
 111         QHeaderView* headerView = header();
 112         headerView->setStretchLastSection(false);
 113         headerView->setResizeMode(QHeaderView::ResizeToContents);
 114         headerView->setResizeMode(0, QHeaderView::Stretch);
 115
 116         // hide columns if this is indicated by the settings
 117         const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 118         Q_ASSERT(settings != 0);
 119         if (!settings->showDate()) {
 120             hideColumn(KDirModel::ModifiedTime);
 121         }
 122
 123         if (!settings->showPermissions()) {
 124             hideColumn(KDirModel::Permissions);
 125         }
 126
 127         if (!settings->showOwner()) {
 128             hideColumn(KDirModel::Owner);
 129         }
 130
 131         if (!settings->showGroup()) {
 132             hideColumn(KDirModel::Group);
 133         }
 134
 135         if (!settings->showType()) {
 136             hideColumn(KDirModel::Type);
 137         }
 138     }
 139
 140     return QTreeView::event(event);
 141 }
 142
 143 QStyleOptionViewItem DolphinDetailsView::viewOptions() const
 144 {
 145     return m_viewOptions;
 146 }
 147
 148 void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 149 {
 150     QTreeView::contextMenuEvent(event);
 151     m_controller->triggerContextMenuRequest(event->pos());
 152 }
 153
 154 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 155 {
 156     m_controller->triggerActivation();
 157
 158     QTreeView::mousePressEvent(event);
 159
 160     const QModelIndex index = indexAt(event->pos());
 161     if (!index.isValid() || (index.column() != KDirModel::Name)) {
 162         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 163         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 164             clearSelection();
 165         }
 166     }
 167
 168     if (event->button() == Qt::LeftButton) {
 169         m_showElasticBand = true;
 170
 171         const QPoint pos(contentsPos());
 172         m_elasticBandOrigin = event->pos();
 173         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 174         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 175         m_elasticBandDestination = event->pos();
 176     }
 177 }
 178
 179 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 180 {
 181     QTreeView::mouseMoveEvent(event);
 182     if (m_showElasticBand) {
 183         updateElasticBand();
 184     }
 185 }
 186
 187 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 188 {
 189     QTreeView::mouseReleaseEvent(event);
 190     if (m_showElasticBand) {
 191         updateElasticBand();
 192         m_showElasticBand = false;
 193     }
 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     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 267     if (m_dragging) {
 268         const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
 269         DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
 270     }
 271 }
 272
 273 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 274 {
 275     QHeaderView* headerView = header();
 276     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 277 }
 278
 279 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 280 {
 281     QHeaderView* headerView = header();
 282     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 283 }
 284
 285 void DolphinDetailsView::synchronizeSortingState(int column)
 286 {
 287     // The sorting has already been changed in QTreeView if this slot is
 288     // invoked, but Dolphin is not informed about this.
 289     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 290     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 291     m_controller->indicateSortingChange(sorting);
 292     m_controller->indicateSortOrderChange(sortOrder);
 293 }
 294
 295 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 296 {
 297     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 298     const int nameColumnWidth = header()->sectionSize(KDirModel::Name);
 299     if (pos.x() < nameColumnWidth) {
 300         m_controller->emitItemEntered(index);
 301     }
 302     else {
 303         m_controller->emitViewportEntered();
 304     }
 305 }
 306
 307 void DolphinDetailsView::updateElasticBand()
 308 {
 309     Q_ASSERT(m_showElasticBand);
 310     QRect dirtyRegion(elasticBandRect());
 311     m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 312     dirtyRegion = dirtyRegion.united(elasticBandRect());
 313     setDirtyRegion(dirtyRegion);
 314 }
 315
 316 void DolphinDetailsView::zoomIn()
 317 {
 318     if (isZoomInPossible()) {
 319         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 320         // TODO: get rid of K3Icon sizes
 321         switch (settings->iconSize()) {
 322         case K3Icon::SizeSmall:  settings->setIconSize(K3Icon::SizeMedium); break;
 323         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeLarge); break;
 324         default: Q_ASSERT(false); break;
 325         }
 326         updateDecorationSize();
 327     }
 328 }
 329
 330 void DolphinDetailsView::zoomOut()
 331 {
 332     if (isZoomOutPossible()) {
 333         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 334         // TODO: get rid of K3Icon sizes
 335         switch (settings->iconSize()) {
 336         case K3Icon::SizeLarge:  settings->setIconSize(K3Icon::SizeMedium); break;
 337         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeSmall); break;
 338         default: Q_ASSERT(false); break;
 339         }
 340         updateDecorationSize();
 341     }
 342 }
 343
 344 bool DolphinDetailsView::isZoomInPossible() const
 345 {
 346     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 347     return settings->iconSize() < K3Icon::SizeLarge;
 348 }
 349
 350 bool DolphinDetailsView::isZoomOutPossible() const
 351 {
 352     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 353     return settings->iconSize() > K3Icon::SizeSmall;
 354 }
 355
 356 void DolphinDetailsView::updateDecorationSize()
 357 {
 358     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 359     const int iconSize = settings->iconSize();
 360     m_viewOptions.decorationSize = QSize(iconSize, iconSize);
 361
 362     m_controller->setZoomInPossible(isZoomInPossible());
 363     m_controller->setZoomOutPossible(isZoomOutPossible());
 364
 365     doItemsLayout();
 366 }
 367
 368 QPoint DolphinDetailsView::contentsPos() const
 369 {
 370     // implementation note: the horizonal position is ignored currently, as no
 371     // horizontal scrolling is done anyway during a selection
 372     const QScrollBar* scrollbar = verticalScrollBar();
 373     Q_ASSERT(scrollbar != 0);
 374
 375     const int maxHeight = maximumViewportSize().height();
 376     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 377     const int visibleHeight = model()->rowCount() + 1 - height;
 378     if (visibleHeight <= 0) {
 379         return QPoint(0, 0);
 380     }
 381
 382     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 383     return QPoint(0, y);
 384 }
 385
 386 QRect DolphinDetailsView::elasticBandRect() const
 387 {
 388     const QPoint pos(contentsPos());
 389     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 390     return QRect(topLeft, m_elasticBandDestination).normalized();
 391 }
 392
 393 #include "dolphindetailsview.moc"