Initial commit

Lts/Plugins/Timeline/Gui/EventTimeline/tln_timeline_proxy_model.cpp

@@ -0,0 +1,95 @@
+/**
+  * @RDE_HEADER@
+  * Proxy Model for hiding empty tracks and sorting tracks by name plus having the "Markers" track always at the top
+  * $Id: $
+  * $HeadURL: $
+  * $Author: $
+  *
+  * Created by Mike Lennart Wille, SLTE, 2022-06-22
+  */
+
+#include "tln_timeline_proxy_model.h"
+#include "tln_timeline_model.h"
+
+
+namespace Timeline
+{
+TimelineProxyModel::TimelineProxyModel()
+  : QSortFilterProxyModel()
+{
+  //setDynamicSortFilter(true);
+  setRecursiveFilteringEnabled(true); // if child gets items for the first time then also show the parent so that the child becomes visible ;)
+}
+
+
+void TimelineProxyModel::toggleShowAllRows()
+{
+  m_forceShowAllRows = !m_forceShowAllRows;
+  invalidateFilter();
+}
+
+
+bool TimelineProxyModel::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
+{
+  if (m_forceShowAllRows)
+    return true;
+
+  auto index = sourceModel()->index(source_row, 1, source_parent);
+  auto index2 = sourceModel()->index(source_row, 0, source_parent);
+
+  if (index.data(Qt::UserRole).toInt() == 666) // always show markers
+  {
+    return true;
+  }
+
+  int trackId = index.data().toInt();
+
+  // TODO: correct solution instead of accessing the TimelineModel directly and depending on it??
+  if (m_modelCachedPointer == nullptr)
+    m_modelCachedPointer = qobject_cast<TimelineModel *>(sourceModel());
+
+  try
+  {
+    const Track &t = m_modelCachedPointer->track(trackId);
+    return t.hasItems();
+  }
+  catch (...)
+  {
+    Q_ASSERT(false);
+    return true; // bail
+  }
+}
+
+
+bool TimelineProxyModel::lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const
+{
+  //qWarning() << "lessThan";
+
+  // Qt doc: "Returns true if [..] source_left is less than [..] source_right, otherwise returns false."
+  // NOTE: only eItems is supported
+
+ //qWarning() << "lessThan marker source_left" << source_left.data(Qt::UserRole).toInt() << " "<<  source_left.data(Qt::DisplayRole).toString();
+  //qWarning() << "lessThan marker source_right" << source_right.data(Qt::UserRole).toInt() << " "<<  source_right.data(Qt::DisplayRole).toString();
+
+  // markers
+  if (source_left.data(Qt::UserRole).toInt() == 1)
+  {
+    return true;
+  }
+  if (source_right.data(Qt::UserRole).toInt() == 1)
+  {
+    return false;
+  }
+  //Number compare
+  bool okL = false;
+  bool okR = false;
+  int intL = source_left.data().toInt(&okL);
+  int intR = source_right.data().toInt(&okR);
+  if (okL && okR)
+    return intL < intR;
+  //String Compare
+  return QString::compare(source_left.data().toString(), source_right.data().toString()) < 0;
+
+  //return QSortFilterProxyModel::lessThan(source_left, source_right);
+}
+} // namespace Timeline