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Group/Ungroup functionality

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This commit is contained in:
Jakub Melka
2021-07-09 19:50:00 +02:00
parent c8be46a7b3
commit ee587d0809
4 changed files with 168 additions and 3 deletions
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140
Pdf4QtDocPageOrganizer/pageitemmodel.cpp
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@@ -125,6 +125,19 @@ const PageGroupItem* PageItemModel::getItem(const QModelIndex& index) const
return nullptr;
}
PageGroupItem* PageItemModel::getItem(const QModelIndex& index)
{
if (index.isValid())
{
if (index.row() < m_pageGroupItems.size())
{
return &m_pageGroupItems.at(index.row());
}
}
return nullptr;
}
bool PageItemModel::isGrouped(const QModelIndexList& indices) const
{
for (const QModelIndex& index : indices)
@@ -161,6 +174,88 @@ QItemSelection PageItemModel::getSelectionLandscape() const
return getSelectionImpl([](const PageGroupItem::GroupItem& groupItem) { return groupItem.rotatedPageDimensionsMM.width() >= groupItem.rotatedPageDimensionsMM.height(); });
}
void PageItemModel::group(const QModelIndexList& list)
{
if (list.isEmpty())
{
return;
}
std::vector<size_t> groupedIndices;
groupedIndices.reserve(list.size());
std::transform(list.cbegin(), list.cend(), std::back_inserter(groupedIndices), [](const auto& index) { return index.row(); });
std::sort(groupedIndices.begin(), groupedIndices.end());
std::vector<PageGroupItem> newPageGroupItems;
std::vector<PageGroupItem::GroupItem> newGroups;
newPageGroupItems.reserve(m_pageGroupItems.size());
for (size_t i = 0; i < m_pageGroupItems.size(); ++i)
{
const PageGroupItem& item = m_pageGroupItems[i];
if (std::binary_search(groupedIndices.cbegin(), groupedIndices.cend(), i))
{
newGroups.insert(newGroups.end(), item.groups.begin(), item.groups.end());
}
else
{
newPageGroupItems.push_back(item);
}
}
PageGroupItem newItem;
newItem.groups = qMove(newGroups);
updateItemCaptionAndTags(newItem);
newPageGroupItems.insert(std::next(newPageGroupItems.begin(), groupedIndices.front()), qMove(newItem));
if (newPageGroupItems != m_pageGroupItems)
{
beginResetModel();
m_pageGroupItems = std::move(newPageGroupItems);
endResetModel();
}
}
void PageItemModel::ungroup(const QModelIndexList& list)
{
if (list.isEmpty())
{
return;
}
std::vector<size_t> ungroupedIndices;
ungroupedIndices.reserve(list.size());
std::transform(list.cbegin(), list.cend(), std::back_inserter(ungroupedIndices), [](const auto& index) { return index.row(); });
std::sort(ungroupedIndices.begin(), ungroupedIndices.end());
std::vector<PageGroupItem> newPageGroupItems;
newPageGroupItems.reserve(m_pageGroupItems.size());
for (size_t i = 0; i < m_pageGroupItems.size(); ++i)
{
const PageGroupItem& item = m_pageGroupItems[i];
if (item.isGrouped() && std::binary_search(ungroupedIndices.cbegin(), ungroupedIndices.cend(), i))
{
for (const PageGroupItem::GroupItem& groupItem : item.groups)
{
PageGroupItem newItem;
newItem.groups = { groupItem };
updateItemCaptionAndTags(newItem);
newPageGroupItems.push_back(qMove(newItem));
}
}
else
{
newPageGroupItems.push_back(item);
}
}
if (newPageGroupItems != m_pageGroupItems)
{
beginResetModel();
m_pageGroupItems = std::move(newPageGroupItems);
endResetModel();
}
}
QItemSelection PageItemModel::getSelectionImpl(std::function<bool (const PageGroupItem::GroupItem&)> filter) const
{
QItemSelection result;
@@ -235,5 +330,50 @@ QString PageItemModel::getGroupNameFromDocument(int index) const
return fileInfo.fileName();
}
void PageItemModel::updateItemCaptionAndTags(PageGroupItem& item) const
{
std::set<int> documentIndices = item.getDocumentIndices();
const size_t pageCount = item.groups.size();
if (documentIndices.size() == 1)
{
pdf::PDFClosedIntervalSet pageSet;
for (const auto& groupItem : item.groups)
{
pageSet.addInterval(groupItem.pageIndex, groupItem.pageIndex);
}
item.groupName = getGroupNameFromDocument(*documentIndices.begin());
item.pagesCaption = pageSet.toText(true);
}
else
{
item.groupName = tr("Document collection");
item.pagesCaption = tr("Page Count: %1").arg(item.groups.size());
}
item.tags.clear();
if (pageCount > 1)
{
item.tags << QString("#00CC00@+%1").arg(pageCount - 1);
}
if (documentIndices.size() > 1)
{
item.tags << QString("#BBBB00@Collection");
}
}
std::set<int> PageGroupItem::getDocumentIndices() const
{
std::set<int> result;
for (const auto& groupItem : groups)
{
result.insert(groupItem.documentIndex);
}
return result;
}
} // namespace pdfdocpage