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refs #674, code for hover/drop indicator

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* item delegate for callback to view for hover
* proxy style for draw drop indicator as primitive
* added functions to view base for hover / callbacks
* highlight hover row in model
This commit is contained in:
Klaus Basan
2016-06-17 16:16:42 +02:00
parent ce7362a9d9
commit 32d6d68c83
8 changed files with 240 additions and 7 deletions
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29
src/blackgui/models/listmodelbase.cpp
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@@ -163,7 +163,6 @@ namespace BlackGui
// drag and drop
f = f | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled;
return f;
}
@@ -198,6 +197,19 @@ namespace BlackGui
return m_modelDestroyed;
}
void CListModelBaseNonTemplate::setHoveredRow(int row)
{
if (this->m_hoverRow == row) { return; }
this->m_hoverRow = row;
const int columns = columnCount();
if (columns < 1) { return; }
if (row < 0) { return; }
const QModelIndex topLeft(createIndex(row, 0));
const QModelIndex bottomRight(createIndex(row, columns - 1));
emit this->dataChanged(topLeft, bottomRight);
}
void CListModelBaseNonTemplate::emitDataChanged(int startRowIndex, int endRowIndex)
{
BLACK_VERIFY_X(startRowIndex <= endRowIndex, Q_FUNC_INFO, "check rows");
@@ -228,6 +240,13 @@ namespace BlackGui
connect(this, &CListModelBaseNonTemplate::dataChanged, this, &CListModelBaseNonTemplate::ps_onDataChanged);
}
bool CListModelBaseNonTemplate::isHoveredRow(int row) const
{
if (this->m_hoverRow < 0) { return false; }
if (row < 0) { return false; }
return row == this->m_hoverRow;
}
bool CListModelBaseNonTemplate::isHoveredRow(const QModelIndex &modelIndex) const
{
if (this->m_hoverRow < 0) { return false; }
@@ -292,11 +311,13 @@ namespace BlackGui
{
// check / init
if (!this->isValidIndex(index)) { return QVariant(); }
const int row = index.row();
const int col = index.column();
// Hover effect
if (role == Qt::BackgroundRole)
{
if (this->isHoveredRow(index))
if (this->isHoveredRow(row))
{
return QBrush(Qt::red);
}
@@ -311,8 +332,8 @@ namespace BlackGui
if (!formatter || !formatter->supportsRole(role)) { return CListModelBaseNonTemplate::data(index, role); }
// Formatted data
const ObjectType obj = this->containerOrFilteredContainer()[index.row()];
BlackMisc::CPropertyIndex propertyIndex = this->columnToPropertyIndex(index.column());
const ObjectType obj = this->containerOrFilteredContainer()[row];
BlackMisc::CPropertyIndex propertyIndex = this->columnToPropertyIndex(col);
return formatter->data(role, obj.propertyByIndex(propertyIndex)).getQVariant();
}