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Examples/Marketplace: Create grid view with all items on demand

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No need to create that at startup.

Change-Id: Iff4cc634777fdd6cc9920a60e3260ee6d5a1a619
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
This commit is contained in:
Eike Ziller
2023-03-17 15:18:59 +01:00
parent 623661a034
commit 3afe94777c
2 changed files with 37 additions and 25 deletions
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53
src/plugins/coreplugin/welcomepagehelper.cpp
View File

@@ -633,11 +633,9 @@ void ListItemDelegate::goon()
SectionedGridView::SectionedGridView(QWidget *parent)
: QStackedWidget(parent)
, m_allItemsView(new Core::GridView(this))
{
auto allItemsModel = new ListModel(this);
allItemsModel->setPixmapFunction(m_pixmapFunction);
m_filteredAllItemsModel = new Core::ListModelFilter(allItemsModel, this);
m_allItemsModel.reset(new ListModel);
m_allItemsModel->setPixmapFunction(m_pixmapFunction);
auto area = new QScrollArea(this);
area->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
@@ -653,16 +651,18 @@ SectionedGridView::SectionedGridView(QWidget *parent)
area->setWidget(sectionedView);
addWidget(area);
m_allItemsView->setModel(m_filteredAllItemsModel);
addWidget(m_allItemsView);
}
SectionedGridView::~SectionedGridView() = default;
SectionedGridView::~SectionedGridView()
{
clear();
}
void SectionedGridView::setItemDelegate(QAbstractItemDelegate *delegate)
{
m_allItemsView->setItemDelegate(delegate);
m_itemDelegate = delegate;
if (m_allItemsView)
m_allItemsView->setItemDelegate(delegate);
for (GridView *view : std::as_const(m_gridViews))
view->setItemDelegate(delegate);
}
@@ -670,18 +670,30 @@ void SectionedGridView::setItemDelegate(QAbstractItemDelegate *delegate)
void SectionedGridView::setPixmapFunction(const Core::ListModel::PixmapFunction &pixmapFunction)
{
m_pixmapFunction = pixmapFunction;
auto allProducts = static_cast<ListModel *>(m_filteredAllItemsModel->sourceModel());
allProducts->setPixmapFunction(pixmapFunction);
m_allItemsModel->setPixmapFunction(pixmapFunction);
for (ListModel *model : std::as_const(m_sectionModels))
model->setPixmapFunction(pixmapFunction);
}
void SectionedGridView::setSearchString(const QString &searchString)
{
int view = searchString.isEmpty() ? 0 // sectioned view
: 1; // search view
setCurrentIndex(view);
m_filteredAllItemsModel->setSearchString(searchString);
if (searchString.isEmpty()) {
// back to sectioned view
setCurrentIndex(0);
return;
}
if (!m_allItemsView) {
// We don't have a grid set for searching yet.
// Create all items view for filtering.
m_allItemsView.reset(new GridView);
m_allItemsView->setModel(new ListModelFilter(m_allItemsModel.get(), m_allItemsView.get()));
if (m_itemDelegate)
m_allItemsView->setItemDelegate(m_itemDelegate);
addWidget(m_allItemsView.get());
}
setCurrentWidget(m_allItemsView.get());
auto filterModel = static_cast<ListModelFilter *>(m_allItemsView.get()->model());
filterModel->setSearchString(searchString);
}
ListModel *SectionedGridView::addSection(const Section &section, const QList<ListItem *> &items)
@@ -695,7 +707,7 @@ ListModel *SectionedGridView::addSection(const Section &section, const QList<Lis
model->appendItems(items);
auto gridView = new SectionGridView(this);
gridView->setItemDelegate(m_allItemsView->itemDelegate());
gridView->setItemDelegate(m_itemDelegate);
gridView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
gridView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
gridView->setModel(model);
@@ -717,12 +729,11 @@ ListModel *SectionedGridView::addSection(const Section &section, const QList<Lis
vbox->insertWidget(position + 1, gridView);
// add the items also to the all products model to be able to search correctly
auto allProducts = static_cast<ListModel *>(m_filteredAllItemsModel->sourceModel());
const QSet<ListItem *> allItems = toSet(allProducts->items());
const QSet<ListItem *> allItems = toSet(m_allItemsModel->items());
const QList<ListItem *> newItems = filtered(items, [&allItems](ListItem *item) {
return !allItems.contains(item);
});
allProducts->appendItems(newItems);
m_allItemsModel->appendItems(newItems);
// only show section label(s) if there is more than one section
m_sectionLabels.at(0)->setVisible(m_sectionLabels.size() > 1);
@@ -732,14 +743,14 @@ ListModel *SectionedGridView::addSection(const Section &section, const QList<Lis
void SectionedGridView::clear()
{
auto allProducts = static_cast<ListModel *>(m_filteredAllItemsModel->sourceModel());
allProducts->clear();
m_allItemsModel->clear();
qDeleteAll(m_sectionModels);
qDeleteAll(m_sectionLabels);
qDeleteAll(m_gridViews);
m_sectionModels.clear();
m_sectionLabels.clear();
m_gridViews.clear();
m_allItemsView.reset();
}
} // namespace Core

9
src/plugins/coreplugin/welcomepagehelper.h
View File

@@ -40,7 +40,7 @@ public:
class CORE_EXPORT GridView : public QListView
{
public:
explicit GridView(QWidget *parent);
explicit GridView(QWidget *parent = nullptr);
protected:
void leaveEvent(QEvent *) final;
@@ -74,7 +74,7 @@ public:
using PixmapFunction = std::function<QPixmap(QString)>;
explicit ListModel(QObject *parent);
explicit ListModel(QObject *parent = nullptr);
~ListModel() override;
void appendItems(const QList<ListItem *> &items);
@@ -199,9 +199,10 @@ private:
QMap<Section, Core::ListModel *> m_sectionModels;
QList<QWidget *> m_sectionLabels;
QMap<Section, Core::GridView *> m_gridViews;
Core::GridView *m_allItemsView = nullptr;
Core::ListModelFilter *m_filteredAllItemsModel = nullptr;
std::unique_ptr<Core::ListModel> m_allItemsModel;
std::unique_ptr<Core::GridView> m_allItemsView;
Core::ListModel::PixmapFunction m_pixmapFunction;
QAbstractItemDelegate *m_itemDelegate = nullptr;
};
} // namespace Core