[vlc-devel] [PATCH 2/6] qt: add positionRole on ChapterListModel

[Abel Tesfaye]

From: Abel Tesfaye <Abeltesfaye45 at gmail.com>

---
 modules/gui/qt/util/input_models.cpp | 26 +++++++++++++++++++++++++-
 modules/gui/qt/util/input_models.hpp |  6 +++++-
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/modules/gui/qt/util/input_models.cpp b/modules/gui/qt/util/input_models.cpp
index e381fbb917..918f93193d 100644
--- a/modules/gui/qt/util/input_models.cpp
+++ b/modules/gui/qt/util/input_models.cpp
@@ -287,6 +287,8 @@ QVariant ChapterListModel::data(const QModelIndex &index, int role) const
         return QVariant::fromValue<bool>(row == m_current);
     else if (role == ChapterListRoles::TimeRole )
         return QVariant::fromValue<vlc_tick_t>(chapter.time);
+    else if (role == ChapterListRoles::PositionRole && (m_title->length != 0) )
+        return QVariant::fromValue<float>(chapter.time /(float) m_title->length);
     return QVariant{};
 }
 
@@ -313,7 +315,8 @@ QHash<int, QByteArray> ChapterListModel::roleNames() const
     return QHash<int, QByteArray>{
         {Qt::DisplayRole, "display"},
         {Qt::CheckStateRole, "checked"},
-        {ChapterListRoles::TimeRole, "time"}
+        {ChapterListRoles::TimeRole, "time"},
+        {ChapterListRoles::PositionRole, "position"}
     };
 }
 
@@ -341,6 +344,27 @@ void ChapterListModel::resetTitle(const vlc_player_title *newTitle)
     endResetModel();
 }
 
+QString ChapterListModel::getNameAtPosition(float pos) const
+{
+    if(m_title == nullptr)
+        return qtr("nothing found");
+
+    vlc_tick_t posTime = pos * m_title->length;
+    int prevChapterIndex = 0;
+
+    for(unsigned int i=0;i<m_title->chapter_count;i++){
+
+        vlc_tick_t currentChapterTime = m_title->chapters[i].time;
+
+        if(currentChapterTime > posTime)
+           return qfu(m_title->chapters[prevChapterIndex].name);
+
+        else if(i == (m_title->chapter_count - 1))
+            return qfu(m_title->chapters[i].name);
+
+        prevChapterIndex = i;
+    }
+}
 
 //***************************
 //  ProgramListModel
diff --git a/modules/gui/qt/util/input_models.hpp b/modules/gui/qt/util/input_models.hpp
index aab6dfe0f3..3744291cff 100644
--- a/modules/gui/qt/util/input_models.hpp
+++ b/modules/gui/qt/util/input_models.hpp
@@ -140,7 +140,8 @@ class ChapterListModel : public QAbstractListModel
 public:
     //user role
     enum ChapterListRoles {
-        TimeRole = Qt::UserRole + 1
+        TimeRole = Qt::UserRole + 1 ,
+        PositionRole
     };
 public:
     ChapterListModel(vlc_player_t* player, QObject* parent = nullptr);
@@ -159,6 +160,9 @@ public:
 
     void resetTitle(const vlc_player_title* newTitle);
 
+public slots:
+    QString getNameAtPosition(float pos) const;
+
 private:
     vlc_player_t* m_player = nullptr;
     const vlc_player_title* m_title = nullptr;
-- 
2.21.0