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