[drape] backend renderer refactoring. Use new cross-thread communication.

1 files changed, 57 insertions, 0 deletions

diff --git a/drape_frontend/read_mwm_task.cpp b/drape_frontend/read_mwm_task.cpp
new file mode 100644
index 0000000000..91d9eaf8e3
--- /dev/null
+++ b/drape_frontend/read_mwm_task.cpp
@@ -0,0 +1,57 @@
+#include "read_mwm_task.hpp"
+
+namespace df
+{
+  ReadMWMTask::ReadMWMTask(TileKey const & tileKey, df::MemoryFeatureIndex & index)
+    : m_tileInfo(tileKey)
+    , m_isFinished(false)
+    , m_index(index)
+  {
+  }
+
+  void ReadMWMTask::Do()
+  {
+    if (m_tileInfo.m_featureInfo.empty())
+      ReadTileIndex();
+
+    vector<size_t> indexesToRead;
+    m_index.ReadFeaturesRequest(m_tileInfo.m_featureInfo, indexesToRead);
+    for (size_t i = 0; i < indexesToRead.size(); ++i)
+    {
+      df::FeatureInfo & info = m_tileInfo.m_featureInfo[i];
+      ReadGeometry(info.m_id);
+      info.m_isOwner = true;
+    }
+  }
+
+  df::TileInfo const & ReadMWMTask::GetTileInfo() const
+  {
+    return m_tileInfo;
+  }
+
+  void ReadMWMTask::PrepareToRestart()
+  {
+    m_isFinished = false;
+  }
+
+  void ReadMWMTask::Finish()
+  {
+    m_isFinished = true;
+  }
+
+  bool ReadMWMTask::IsFinished()
+  {
+    return m_isFinished;
+  }
+
+  void ReadMWMTask::ReadTileIndex()
+  {
+    /// TODO read index specified by m_tileInfo(m_x & m_y & m_zoomLevel)
+    /// TODO insert readed FeatureIDs into m_tileInfo.m_featureInfo;
+  }
+
+  void ReadMWMTask::ReadGeometry(const FeatureID & id)
+  {
+    ///TODO read geometry
+  }
+}