本文整理汇总了C++中ListItem::row方法的典型用法代码示例。如果您正苦于以下问题：C++ ListItem::row方法的具体用法？C++ ListItem::row怎么用？C++ ListItem::row使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ListItem的用法示例。
在下文中一共展示了ListItem::row方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: moveItemHorizontal
QModelIndex ListModel::moveItemHorizontal(const QModelIndex& index, int direction)
{
ListItem* item = itemFromIndex(index);
if (!item)
return index;
ListItem* parent = item->parent();
int row = item->row();
if (direction == App::Left) { // reparent as child of parent's parent
if (!parent || parent->isRoot()) // already top level item
return index;
ListItem* newParent = parent->parent();
int newRow = parent->row() + 1;
QSqlDatabase db = QSqlDatabase::database();
db.transaction();
if (parent->takeChildDb(row) &&
item->setParentDb(newParent, newRow)) {
db.commit();
if (beginMoveRows(indexFromItem(parent), row, row, indexFromItem(newParent), newRow)) {
newParent->insertChild(newRow, parent->takeChild(row));
endMoveRows();
}
return indexFromItem(item);
} else {
db.rollback();
return index;
}
} else { // move as child of previous sibling
ListItem* newParent = parent->child(row - 1);
if (!newParent)
return index;
QSqlDatabase db = QSqlDatabase::database();
db.transaction();
if (parent->takeChildDb(row) &&
item->setParentDb(newParent, newParent->childCount())) {
db.commit();
if (beginMoveRows(indexFromItem(parent), row, row, indexFromItem(newParent), newParent->childCount())) {
newParent->appendChild(parent->takeChild(row));
endMoveRows();
}
newParent->setExpanded(true);
return indexFromItem(item);
} else {
db.rollback();
return index;
}
}
}示例2: removeItem
void ListModel::removeItem(const QModelIndex& index)
{
if (!index.isValid())
return;
ListItem* item = itemFromIndex(index);
if (!item)
return;
bool isProject = item->isProject();
ListItem* parent = item->parent();
// disable removing the last child
if (parent == root() && root()->childCount() == 1)
return;
int row = item->row();
beginRemoveRows(indexFromItem(parent), row, row);
QSqlDatabase db = QSqlDatabase::database();
db.transaction();
if (_removeItem(item)) {
db.commit();
if (isProject)
emit projectRemoved();
} else {
db.rollback();
}
endRemoveRows();
}示例3: moveItemVertical
QModelIndex ListModel::moveItemVertical(const QModelIndex& index, App::Direction direction)
{
ListItem* item = itemFromIndex(index);
if (!item)
return index;
int row = item->row();
if (direction == App::Up && row == 0)
return index;
ListItem* parent = item->parent();
if (direction == App::Down && row == (parent->childCount() - 1))
return index;
ListItem* otherItem = parent->child(direction == App::Up ? row - 1 : row + 1);
int downRow = direction == App::Down ? row : row - 1; // the row that is being moved down
QSqlDatabase db = QSqlDatabase::database();
db.transaction();
if (item->setRow(direction == App::Down ? row + 1 : row - 1) &&
otherItem->setRow(row)) {
db.commit();
if (beginMoveRows(index.parent(), downRow, downRow, index.parent(), downRow + 2)) {
parent->moveChild(downRow);
endMoveRows();
return indexFromItem(item);
}
} else
db.rollback();
return index;
}示例4: sort
void ListModel::sort(ListItem* parent, App::SortMode mode)
{
int count = parent->childCount();
QVector<QPair<ListItem*, int>> sorting(count);
for (int i = 0; i < count; ++i) {
sorting[i].first = parent->child(i);
sorting[i].second = i;
}
if (!parent->sort(mode))
return;
QModelIndexList oldIndexes;
QModelIndexList newIndexes;
for (QModelIndex idx : persistentIndexList()) {
ListItem* item = itemFromIndex(idx);
if (!item)
continue;
if (idx.row() != item->row()) {
oldIndexes.append(idx);
newIndexes.append(indexFromItem(item));
}
}
qDebug() << __FUNCTION__ << oldIndexes;
qDebug() << __FUNCTION__ << newIndexes;
changePersistentIndexList(oldIndexes, newIndexes);
emit layoutChanged();
}示例5: parent
QModelIndex ListModel::parent(const QModelIndex& index) const
{
if (!index.isValid()) // root
return QModelIndex();
ListItem* item = itemFromIndex(index);
if (!item)
return QModelIndex();
ListItem* parent = item->parent();
if (parent->isRoot()) // top level item
return QModelIndex();
return createIndex(parent->row(), 0, parent);
}示例6: data
QVariant ListModel::data(const QModelIndex& index, int role) const
{
if (index.isValid()) {
ListItem* item = itemFromIndex(index);
if (item) {
// all columns
switch (role) {
case Qt::BackgroundRole:
if (item->isHighlighted())
return App::HighlightBackgroundColor;
else if (item->isProject())
return App::ProjectBackgroundColor;
else if (item->isMilestone())
return App::MilestoneBackgroundColor;
else
return QVariant();
}
// specific column
switch (index.column()) {
case 0:
switch (role) {
case Qt::DisplayRole:
return item->html();
case Qt::EditRole:
return item->markdown();
case Qt::CheckStateRole:
if (item->isCheckable())
if (item->isCompleted())
return Qt::Checked;
else if (item->isCancelled())
return Qt::PartiallyChecked;
else
return Qt::Unchecked;
break;
case Qt::DecorationRole:
if (item->isProject())
return Util::findIcon("project");
if (item->isMilestone())
return Util::findIcon("milestone");
if (item->isNote())
return Util::findIcon("note");
break;
#ifdef QT_DEBUG
case Qt::ToolTipRole:
return QString("id: %1 row: %2 parent: %3 milestone: %4 priority: %5").arg(item->id()).arg(item->row()).arg(item->parent()->id()).arg(item->isMilestone()).arg(item->priority());
#endif
} break;
case 1:
switch (role) {
case Qt::DisplayRole:
return item->dueDate();
} break;
}
}
}
return QVariant();
}