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     setAlternatingRowColors(true);
  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                 this, SLOT(slotItemActivated(const QModelIndex&)));
  75     } else {
  76         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  77                 this, SLOT(slotItemActivated(const QModelIndex&)));
  78     }
  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     m_controller->triggerActivation();
 158
 159     QTreeView::mousePressEvent(event);
 160
 161     const QModelIndex index = indexAt(event->pos());
 162     if (!index.isValid() || (index.column() != KDirModel::Name)) {
 163         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 164         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 165             clearSelection();
 166         }
 167     }
 168
 169     if (event->button() == Qt::LeftButton) {
 170         m_showElasticBand = true;
 171
 172         const QPoint pos(contentsPos());
 173         m_elasticBandOrigin = event->pos();
 174         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 175         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 176         m_elasticBandDestination = event->pos();
 177     }
 178 }
 179
 180 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 181 {
 182     QTreeView::mouseMoveEvent(event);
 183     if (m_showElasticBand) {
 184         updateElasticBand();
 185     }
 186 }
 187
 188 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 189 {
 190     QTreeView::mouseReleaseEvent(event);
 191     if (m_showElasticBand) {
 192         updateElasticBand();
 193         m_showElasticBand = false;
 194     }
 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::dragLeaveEvent(QDragLeaveEvent* event)
 211 {
 212     QTreeView::dragLeaveEvent(event);
 213
 214     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 215     m_dragging = false;
 216     setDirtyRegion(m_dropRect);
 217 }
 218
 219 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 220 {
 221     QTreeView::dragMoveEvent(event);
 222
 223     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 224     setDirtyRegion(m_dropRect);
 225     const QModelIndex index = indexAt(event->pos());
 226     if (!index.isValid() || (index.column() != KDirModel::Name)) {
 227         m_dragging = false;
 228     } else {
 229         m_dragging = true;
 230         m_dropRect = visualRect(index);
 231         setDirtyRegion(m_dropRect);
 232     }
 233 }
 234
 235 void DolphinDetailsView::dropEvent(QDropEvent* event)
 236 {
 237     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 238     if (!urls.isEmpty()) {
 239         event->acceptProposedAction();
 240         m_controller->indicateDroppedUrls(urls,
 241                                           indexAt(event->pos()),
 242                                           event->source());
 243     }
 244     QTreeView::dropEvent(event);
 245     m_dragging = false;
 246 }
 247
 248 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 249 {
 250     QTreeView::paintEvent(event);
 251     if (m_showElasticBand) {
 252         // The following code has been taken from QListView
 253         // and adapted to DolphinDetailsView.
 254         // (C) 1992-2007 Trolltech ASA
 255         QStyleOptionRubberBand opt;
 256         opt.initFrom(this);
 257         opt.shape = QRubberBand::Rectangle;
 258         opt.opaque = false;
 259         opt.rect = elasticBandRect();
 260
 261         QPainter painter(viewport());
 262         painter.save();
 263         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 264         painter.restore();
 265     }
 266
 267     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 268     if (m_dragging) {
 269         const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
 270         DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
 271     }
 272 }
 273
 274 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 275 {
 276     QHeaderView* headerView = header();
 277     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 278 }
 279
 280 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 281 {
 282     QHeaderView* headerView = header();
 283     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 284 }
 285
 286 void DolphinDetailsView::synchronizeSortingState(int column)
 287 {
 288     // The sorting has already been changed in QTreeView if this slot is
 289     // invoked, but Dolphin is not informed about this.
 290     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 291     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 292     m_controller->indicateSortingChange(sorting);
 293     m_controller->indicateSortOrderChange(sortOrder);
 294 }
 295
 296 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 297 {
 298     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 299     const int nameColumnWidth = header()->sectionSize(KDirModel::Name);
 300     if (pos.x() < nameColumnWidth) {
 301         m_controller->emitItemEntered(index);
 302     }
 303     else {
 304         m_controller->emitViewportEntered();
 305     }
 306 }
 307
 308 void DolphinDetailsView::updateElasticBand()
 309 {
 310     Q_ASSERT(m_showElasticBand);
 311     QRect dirtyRegion(elasticBandRect());
 312     m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 313     dirtyRegion = dirtyRegion.united(elasticBandRect());
 314     setDirtyRegion(dirtyRegion);
 315 }
 316
 317 void DolphinDetailsView::zoomIn()
 318 {
 319     if (isZoomInPossible()) {
 320         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 321         // TODO: get rid of K3Icon sizes
 322         switch (settings->iconSize()) {
 323         case K3Icon::SizeSmall:  settings->setIconSize(K3Icon::SizeMedium); break;
 324         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeLarge); break;
 325         default: Q_ASSERT(false); break;
 326         }
 327         updateDecorationSize();
 328     }
 329 }
 330
 331 void DolphinDetailsView::zoomOut()
 332 {
 333     if (isZoomOutPossible()) {
 334         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 335         // TODO: get rid of K3Icon sizes
 336         switch (settings->iconSize()) {
 337         case K3Icon::SizeLarge:  settings->setIconSize(K3Icon::SizeMedium); break;
 338         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeSmall); break;
 339         default: Q_ASSERT(false); break;
 340         }
 341         updateDecorationSize();
 342     }
 343 }
 344
 345 bool DolphinDetailsView::isZoomInPossible() const
 346 {
 347     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 348     return settings->iconSize() < K3Icon::SizeLarge;
 349 }
 350
 351 bool DolphinDetailsView::isZoomOutPossible() const
 352 {
 353     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 354     return settings->iconSize() > K3Icon::SizeSmall;
 355 }
 356
 357 void DolphinDetailsView::updateDecorationSize()
 358 {
 359     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 360     const int iconSize = settings->iconSize();
 361     m_viewOptions.decorationSize = QSize(iconSize, iconSize);
 362
 363     m_controller->setZoomInPossible(isZoomInPossible());
 364     m_controller->setZoomOutPossible(isZoomOutPossible());
 365
 366     doItemsLayout();
 367 }
 368
 369 QPoint DolphinDetailsView::contentsPos() const
 370 {
 371     // implementation note: the horizonal position is ignored currently, as no
 372     // horizontal scrolling is done anyway during a selection
 373     const QScrollBar* scrollbar = verticalScrollBar();
 374     Q_ASSERT(scrollbar != 0);
 375
 376     const int maxHeight = maximumViewportSize().height();
 377     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 378     const int visibleHeight = model()->rowCount() + 1 - height;
 379     if (visibleHeight <= 0) {
 380         return QPoint(0, 0);
 381     }
 382
 383     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 384     return QPoint(0, y);
 385 }
 386
 387 QRect DolphinDetailsView::elasticBandRect() const
 388 {
 389     const QPoint pos(contentsPos());
 390     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 391     return QRect(topLeft, m_elasticBandDestination).normalized();
 392 }
 393
 394 static bool isValidNameIndex(const QModelIndex& index)
 395 {
 396     return index.isValid() && (index.column() == KDirModel::Name);
 397 }
 398
 399 void DolphinDetailsView::slotItemActivated(const QModelIndex& index)
 400 {
 401     if (!isValidNameIndex(index)) {
 402         clearSelection();
 403         m_controller->emitItemEntered(index);
 404     } else {
 405         m_controller->triggerItem(index);
 406     }
 407 }
 408
 409 #include "dolphindetailsview.moc"