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#include "modelutils.h"
#include <QAbstractProxyModel>
namespace MOShared {
QModelIndexList flatIndex(
const QAbstractItemModel* model, int column, const QModelIndex& parent)
{
QModelIndexList index;
for (std::size_t i = 0; i < model->rowCount(parent); ++i) {
index.append(model->index(i, column, parent));
index.append(flatIndex(model, column, index.back()));
}
return index;
}
static QModelIndexList visibleIndexImpl(QTreeView* view, int column, const QModelIndex& parent)
{
if (parent.isValid() && !view->isExpanded(parent)) {
return {};
}
auto* model = view->model();
QModelIndexList index;
for (std::size_t i = 0; i < model->rowCount(parent); ++i) {
index.append(model->index(i, column, parent));
index.append(visibleIndexImpl(view, column, index.back()));
}
return index;
}
QModelIndexList visibleIndex(QTreeView* view, int column)
{
return visibleIndexImpl(view, column, QModelIndex());
}
QModelIndex indexModelToView(const QModelIndex& index, const QAbstractItemView* view)
{
// we need to stack the proxy
std::vector<QAbstractProxyModel*> proxies;
{
auto* currentModel = view->model();
while (auto* proxy = qobject_cast<QAbstractProxyModel*>(currentModel)) {
proxies.push_back(proxy);
currentModel = proxy->sourceModel();
}
}
if (proxies.empty() || proxies.back()->sourceModel() != index.model()) {
return QModelIndex();
}
auto qindex = index;
for (auto rit = proxies.rbegin(); rit != proxies.rend(); ++rit) {
qindex = (*rit)->mapFromSource(qindex);
}
return qindex;
}
QModelIndexList indexModelToView(const QModelIndexList& index, const QAbstractItemView* view)
{
QModelIndexList result;
for (auto& idx : index) {
result.append(indexModelToView(idx, view));
}
return result;
}
QModelIndex indexViewToModel(const QModelIndex& index, const QAbstractItemModel* model)
{
if (index.model() == model) {
return index;
}
else if (auto* proxy = qobject_cast<const QAbstractProxyModel*>(index.model())) {
return indexViewToModel(proxy->mapToSource(index), model);
}
else {
return QModelIndex();
}
}
QModelIndexList indexViewToModel(const QModelIndexList& index, const QAbstractItemModel* model)
{
QModelIndexList result;
for (auto& idx : index) {
result.append(indexViewToModel(idx, model));
}
return result;
}
QColor childrenColor(const QModelIndex& index, QTreeView* view, int role)
{
auto* model = view->model();
auto rowIndex = index.sibling(index.row(), 0);
if (model->hasChildren(rowIndex) && !view->isExpanded(rowIndex)) {
// this is a non-expanded item
std::vector<QColor> colors;
for (int i = 0; i < model->rowCount(rowIndex); ++i) {
auto childData = model->data(model->index(i, index.column(), rowIndex), role);
if (childData.isValid() && childData.canConvert<QColor>()) {
colors.push_back(childData.value<QColor>());
}
}
if (colors.empty()) {
return QColor();
}
int r = 0, g = 0, b = 0, a = 0;
for (auto& color : colors) {
r += color.red();
g += color.green();
b += color.blue();
a += color.alpha();
}
return QColor(r / colors.size(), g / colors.size(), b / colors.size(), a / colors.size());
}
return QColor();
}
}
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