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     m_controller->triggerActivation();
 159
 160     QTreeView::mousePressEvent(event);
 161
 162     const QModelIndex index = indexAt(event->pos());
 163     if (!index.isValid() || (index.column() != KDirModel::Name)) {
 164         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 165         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 166             clearSelection();
 167         }
 168     }
 169
 170     if (event->button() == Qt::LeftButton) {
 171         m_showElasticBand = true;
 172
 173         const QPoint pos(contentsPos());
 174         m_elasticBandOrigin = event->pos();
 175         m_elasticBandOrigin.setX(m_elasticBandOrigin.x() + pos.x());
 176         m_elasticBandOrigin.setY(m_elasticBandOrigin.y() + pos.y());
 177         m_elasticBandDestination = event->pos();
 178     }
 179 }
 180
 181 void DolphinDetailsView::mouseMoveEvent(QMouseEvent* event)
 182 {
 183     QTreeView::mouseMoveEvent(event);
 184     if (m_showElasticBand) {
 185         updateElasticBand();
 186     }
 187 }
 188
 189 void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
 190 {
 191     QTreeView::mouseReleaseEvent(event);
 192     if (m_showElasticBand) {
 193         updateElasticBand();
 194         m_showElasticBand = false;
 195     }
 196 }
 197
 198 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 199 {
 200     if (event->mimeData()->hasUrls()) {
 201         event->acceptProposedAction();
 202     }
 203
 204     if (m_showElasticBand) {
 205         updateElasticBand();
 206         m_showElasticBand = false;
 207     }
 208     m_dragging = true;
 209 }
 210
 211 void DolphinDetailsView::dragLeaveEvent(QDragLeaveEvent* event)
 212 {
 213     QTreeView::dragLeaveEvent(event);
 214
 215     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 216     m_dragging = false;
 217     setDirtyRegion(m_dropRect);
 218 }
 219
 220 void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
 221 {
 222     QTreeView::dragMoveEvent(event);
 223
 224     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 225     setDirtyRegion(m_dropRect);
 226     const QModelIndex index = indexAt(event->pos());
 227     if (!index.isValid() || (index.column() != KDirModel::Name)) {
 228         m_dragging = false;
 229     } else {
 230         m_dragging = true;
 231         m_dropRect = visualRect(index);
 232         setDirtyRegion(m_dropRect);
 233     }
 234 }
 235
 236 void DolphinDetailsView::dropEvent(QDropEvent* event)
 237 {
 238     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 239     if (!urls.isEmpty()) {
 240         event->acceptProposedAction();
 241         m_controller->indicateDroppedUrls(urls,
 242                                           indexAt(event->pos()),
 243                                           event->source());
 244     }
 245     QTreeView::dropEvent(event);
 246     m_dragging = false;
 247 }
 248
 249 void DolphinDetailsView::paintEvent(QPaintEvent* event)
 250 {
 251     QTreeView::paintEvent(event);
 252     if (m_showElasticBand) {
 253         // The following code has been taken from QListView
 254         // and adapted to DolphinDetailsView.
 255         // (C) 1992-2007 Trolltech ASA
 256         QStyleOptionRubberBand opt;
 257         opt.initFrom(this);
 258         opt.shape = QRubberBand::Rectangle;
 259         opt.opaque = false;
 260         opt.rect = elasticBandRect();
 261
 262         QPainter painter(viewport());
 263         painter.save();
 264         style()->drawControl(QStyle::CE_RubberBand, &opt, &painter);
 265         painter.restore();
 266     }
 267
 268     if (m_dragging) {
 269         // TODO: remove this code when the issue #160611 is solved in Qt 4.4
 270         QPainter painter(viewport());
 271         painter.save();
 272         QBrush brush(m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight));
 273         QColor color = brush.color();
 274         color.setAlpha(64);
 275         brush.setColor(color);
 276         painter.fillRect(m_dropRect, brush);
 277         painter.restore();
 278     }
 279 }
 280
 281 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
 282 {
 283     QHeaderView* headerView = header();
 284     headerView->setSortIndicator(sorting, headerView->sortIndicatorOrder());
 285 }
 286
 287 void DolphinDetailsView::setSortIndicatorOrder(Qt::SortOrder sortOrder)
 288 {
 289     QHeaderView* headerView = header();
 290     headerView->setSortIndicator(headerView->sortIndicatorSection(), sortOrder);
 291 }
 292
 293 void DolphinDetailsView::synchronizeSortingState(int column)
 294 {
 295     // The sorting has already been changed in QTreeView if this slot is
 296     // invoked, but Dolphin is not informed about this.
 297     DolphinView::Sorting sorting = DolphinSortFilterProxyModel::sortingForColumn(column);
 298     const Qt::SortOrder sortOrder = header()->sortIndicatorOrder();
 299     m_controller->indicateSortingChange(sorting);
 300     m_controller->indicateSortOrderChange(sortOrder);
 301 }
 302
 303 void DolphinDetailsView::slotEntered(const QModelIndex& index)
 304 {
 305     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
 306     const int nameColumnWidth = header()->sectionSize(KDirModel::Name);
 307     if (pos.x() < nameColumnWidth) {
 308         m_controller->emitItemEntered(index);
 309     }
 310     else {
 311         m_controller->emitViewportEntered();
 312     }
 313 }
 314
 315 void DolphinDetailsView::updateElasticBand()
 316 {
 317     Q_ASSERT(m_showElasticBand);
 318     QRect dirtyRegion(elasticBandRect());
 319     m_elasticBandDestination = viewport()->mapFromGlobal(QCursor::pos());
 320     dirtyRegion = dirtyRegion.united(elasticBandRect());
 321     setDirtyRegion(dirtyRegion);
 322 }
 323
 324 void DolphinDetailsView::zoomIn()
 325 {
 326     if (isZoomInPossible()) {
 327         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 328         // TODO: get rid of K3Icon sizes
 329         switch (settings->iconSize()) {
 330         case K3Icon::SizeSmall:  settings->setIconSize(K3Icon::SizeMedium); break;
 331         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeLarge); break;
 332         default: Q_ASSERT(false); break;
 333         }
 334         updateDecorationSize();
 335     }
 336 }
 337
 338 void DolphinDetailsView::zoomOut()
 339 {
 340     if (isZoomOutPossible()) {
 341         DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 342         // TODO: get rid of K3Icon sizes
 343         switch (settings->iconSize()) {
 344         case K3Icon::SizeLarge:  settings->setIconSize(K3Icon::SizeMedium); break;
 345         case K3Icon::SizeMedium: settings->setIconSize(K3Icon::SizeSmall); break;
 346         default: Q_ASSERT(false); break;
 347         }
 348         updateDecorationSize();
 349     }
 350 }
 351
 352 bool DolphinDetailsView::isZoomInPossible() const
 353 {
 354     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 355     return settings->iconSize() < K3Icon::SizeLarge;
 356 }
 357
 358 bool DolphinDetailsView::isZoomOutPossible() const
 359 {
 360     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 361     return settings->iconSize() > K3Icon::SizeSmall;
 362 }
 363
 364 void DolphinDetailsView::updateDecorationSize()
 365 {
 366     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 367     const int iconSize = settings->iconSize();
 368     m_viewOptions.decorationSize = QSize(iconSize, iconSize);
 369
 370     m_controller->setZoomInPossible(isZoomInPossible());
 371     m_controller->setZoomOutPossible(isZoomOutPossible());
 372
 373     doItemsLayout();
 374 }
 375
 376 QPoint DolphinDetailsView::contentsPos() const
 377 {
 378     // implementation note: the horizonal position is ignored currently, as no
 379     // horizontal scrolling is done anyway during a selection
 380     const QScrollBar* scrollbar = verticalScrollBar();
 381     Q_ASSERT(scrollbar != 0);
 382
 383     const int maxHeight = maximumViewportSize().height();
 384     const int height = scrollbar->maximum() - scrollbar->minimum() + 1;
 385     const int visibleHeight = model()->rowCount() + 1 - height;
 386     if (visibleHeight <= 0) {
 387         return QPoint(0, 0);
 388     }
 389
 390     const int y = scrollbar->sliderPosition() * maxHeight / visibleHeight;
 391     return QPoint(0, y);
 392 }
 393
 394 QRect DolphinDetailsView::elasticBandRect() const
 395 {
 396     const QPoint pos(contentsPos());
 397     const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
 398     return QRect(topLeft, m_elasticBandDestination).normalized();
 399 }
 400
 401 #include "dolphindetailsview.moc"