File indexing completed on 2025-01-05 03:51:11

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2010-02-06
  * Description : Thumbnail bar for items
  *
  * SPDX-FileCopyrightText: 2009-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
  * SPDX-FileCopyrightText: 2009-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "itemthumbnailbar.h"
 
 // Qt includes
 
 #include <QEvent>
 
 // Local includes
 
 #include "digikam_debug.h"
 #include "applicationsettings.h"
 #include "itemalbumfiltermodel.h"
 #include "itemalbummodel.h"
 #include "itemdragdrop.h"
 #include "itemratingoverlay.h"
 #include "itemcoordinatesoverlay.h"
 #include "itemthumbnaildelegate.h"
 #include "fileactionmngr.h"
 
 namespace Digikam
 {
 
 class Q_DECL_HIDDEN ItemThumbnailBar::Private
 {
 public:
 
     explicit Private()
       : scrollPolicy    (Qt::ScrollBarAlwaysOn),
         duplicatesFilter(nullptr)
     {
     }
 
     Qt::ScrollBarPolicy          scrollPolicy;
     NoDuplicatesItemFilterModel* duplicatesFilter;
 };
 
 ItemThumbnailBar::ItemThumbnailBar(QWidget* const parent)
     : ItemCategorizedView(parent),
       d                  (new Private())
 {
     setItemDelegate(new ItemThumbnailDelegate(this));
     setSpacing(3);
     setUsePointingHandCursor(false);
     setScrollStepGranularity(5);
     setScrollBarPolicy(Qt::ScrollBarAlwaysOn);
 
     setDragEnabled(true);
     setAcceptDrops(true);
     setDropIndicatorShown(false);
 
     // Disable QListView::Batched optimization
     // for the thumbnail bar, see bug #468593
 
     setLayoutMode(QListView::SinglePass);
 
     setScrollCurrentToCenter(ApplicationSettings::instance()->getScrollItemToCenter());
     setToolTipEnabled(ApplicationSettings::instance()->showToolTipsIsValid());
 
     // --- NOTE: use dynamic binding as slotSetupChanged() is a virtual slot which can be re-implemented in derived classes.
     connect(ApplicationSettings::instance(), &ApplicationSettings::setupChanged,
             this, &ItemThumbnailBar::slotSetupChanged);
 
     this->slotSetupChanged();
     // ---
 
     setFlow(LeftToRight);
 }
 
 ItemThumbnailBar::~ItemThumbnailBar()
 {
     delete d;
 }
 
 void ItemThumbnailBar::setModelsFiltered(ItemModel* model, ImageSortFilterModel* filterModel)
 {
     if (!d->duplicatesFilter)
     {
         d->duplicatesFilter = new NoDuplicatesItemFilterModel(this);
     }
 
     d->duplicatesFilter->setSourceFilterModel(filterModel);
     ItemCategorizedView::setModels(model, d->duplicatesFilter);
 }
 
 void ItemThumbnailBar::installOverlays()
 {
     ItemRatingOverlay* const ratingOverlay = new ItemRatingOverlay(this);
     addOverlay(ratingOverlay);
 
     connect(ratingOverlay, SIGNAL(ratingEdited(QList<QModelIndex>,int)),
             this, SLOT(assignRating(QList<QModelIndex>,int)));
 
     addOverlay(new ItemCoordinatesOverlay(this));
 }
 
 void ItemThumbnailBar::slotDockLocationChanged(Qt::DockWidgetArea area)
 {
     if (area == Qt::LeftDockWidgetArea || area == Qt::RightDockWidgetArea)
     {
         setFlow(TopToBottom);
     }
     else
     {
         setFlow(LeftToRight);
     }
 
     scrollTo(currentIndex());
 }
 
 void ItemThumbnailBar::setScrollBarPolicy(Qt::ScrollBarPolicy policy)
 {
     if (policy == Qt::ScrollBarAsNeeded)
     {
         // Delegate resizing will cause endless relayouting, see bug #228807
         qCDebug(DIGIKAM_GENERAL_LOG) << "The Qt::ScrollBarAsNeeded policy is not supported by ItemThumbnailBar";
     }
 
     d->scrollPolicy = policy;
 
     if (flow() == TopToBottom)
     {
         setVerticalScrollBarPolicy(d->scrollPolicy);
         setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     }
     else
     {
         setHorizontalScrollBarPolicy(d->scrollPolicy);
         setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     }
 }
 
 void ItemThumbnailBar::setFlow(QListView::Flow flow)
 {
     setWrapping(false);
 
     ItemCategorizedView::setFlow(flow);
 
     ItemThumbnailDelegate* const del = static_cast<ItemThumbnailDelegate*>(delegate());
     del->setFlow(flow);
 
     // Reset the minimum and maximum sizes.
     setMinimumSize(QSize(0, 0));
     setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
 
     // Adjust minimum and maximum width to thumbnail sizes.
     if (flow == TopToBottom)
     {
         int viewportFullWidgetOffset = size().width() - viewport()->size().width();
         setMinimumWidth(del->minimumSize() + viewportFullWidgetOffset);
         setMaximumWidth(del->maximumSize() + viewportFullWidgetOffset);
     }
     else
     {
         int viewportFullWidgetOffset = size().height() - viewport()->size().height();
         setMinimumHeight(del->minimumSize() + viewportFullWidgetOffset);
         setMaximumHeight(del->maximumSize() + viewportFullWidgetOffset);
     }
 
     setScrollBarPolicy(d->scrollPolicy);
 }
 
 void ItemThumbnailBar::slotSetupChanged()
 {
     setScrollCurrentToCenter(ApplicationSettings::instance()->getScrollItemToCenter());
     setToolTipEnabled(ApplicationSettings::instance()->showToolTipsIsValid());
     setFont(ApplicationSettings::instance()->getIconViewFont());
 
     ItemCategorizedView::slotSetupChanged();
 }
 
 void ItemThumbnailBar::assignRating(const QList<QModelIndex>& indexes, int rating)
 {
     ItemInfoList infos(imageSortFilterModel()->imageInfos(indexes));
 
     if (needGroupResolving(ApplicationSettings::Metadata, infos))
     {
         infos = resolveGrouping(infos);
     }
 
     FileActionMngr::instance()->assignRating(infos, rating);
 }
 
 bool ItemThumbnailBar::event(QEvent* e)
 {
     // reset widget max/min sizes
     if (e->type() == QEvent::StyleChange || e->type() == QEvent::Show)
     {
         setFlow(flow());
     }
 
     return ItemCategorizedView::event(e);
 }
 
 QModelIndex ItemThumbnailBar::nextIndex(const QModelIndex& index) const
 {
     return imageFilterModel()->index(index.row() + 1, 0);
 }
 
 QModelIndex ItemThumbnailBar::previousIndex(const QModelIndex& index) const
 {
     return imageFilterModel()->index(index.row() - 1, 0);
 }
 
 QModelIndex ItemThumbnailBar::firstIndex() const
 {
     return imageFilterModel()->index(0, 0);
 }
 
 QModelIndex ItemThumbnailBar::lastIndex() const
 {
     return imageFilterModel()->index(imageFilterModel()->rowCount() - 1, 0);
 }
 
 bool ItemThumbnailBar::hasHiddenGroupedImages(const ItemInfo& info) const
 {
     return (info.hasGroupedImages()                &&
             !imageFilterModel()->isAllGroupsOpen() &&
             !imageFilterModel()->isGroupOpen(info.id()));
 }
 
 } // namespace Digikam
 
 #include "moc_itemthumbnailbar.cpp"