[IPHONE] Memory Warning Message.

iphone/Maps/Classes/MapViewController.mm

@@ -255,6 +255,9 @@ typedef FrameWork<model::FeaturesFetcher, Navigator, iphone::WindowHandle> frame
   // Releases the view if it doesn't have a superview.
   [super didReceiveMemoryWarning];
 	
+	m_framework->MemoryWarning();
+	m_framework->Repaint();
+	
 	// Release any cached data, images, etc that aren't in use.
 }
 

map/framework.hpp

@@ -370,6 +370,11 @@ public:
     UpdateNow();
   }
 
+  void MemoryWarning()
+  {
+    m_informationDisplay.memoryWarning();
+  }
+
   void CenterViewport()
   {
     m_navigator.CenterViewport(m_informationDisplay.position());

map/information_display.cpp

@@ -19,6 +19,7 @@ InformationDisplay::InformationDisplay()
   enableRuler(false);
   enableCenter(false);
   enableDebugInfo(false);
+  enableMemoryWarning(false);
 
   for (int i = 0; i < sizeof(m_DebugPts) / sizeof(m2::PointD); ++i)
     m_DebugPts[i] = m2::PointD(0, 0);
@@ -322,6 +323,39 @@ void InformationDisplay::drawDebugInfo(DrawerYG * drawer)
                              false);
 }
 
+void InformationDisplay::enableMemoryWarning(bool flag)
+{
+  m_isMemoryWarningEnabled = flag;
+}
+
+void InformationDisplay::memoryWarning()
+{
+  enableMemoryWarning(true);
+  m_lastMemoryWarning = my::Timer();
+}
+
+void InformationDisplay::drawMemoryWarning(DrawerYG * drawer)
+{
+  m2::PointD pos(m_displayRect.minX() + 10, m_displayRect.minY() + 20);
+  if (m_isDebugInfoEnabled)
+    pos += m2::PointD(0, 30);
+  if (m_isCenterEnabled)
+    pos += m2::PointD(0, 30);
+
+  ostringstream out;
+  out << "MemoryWarning : " << m_lastMemoryWarning.ElapsedSeconds() << " sec. ago.";
+
+  drawer->screen()->drawText(pos,
+                             0, 10,
+                             out.str().c_str(),
+                             yg::maxDepth,
+                             true,
+                             false);
+
+  if (m_lastMemoryWarning.ElapsedSeconds() > 5)
+    enableMemoryWarning(false);
+}
+
 void InformationDisplay::doDraw(DrawerYG *drawer)
 {
   if (m_isHeadingEnabled)
@@ -336,4 +370,6 @@ void InformationDisplay::doDraw(DrawerYG *drawer)
     drawCenter(drawer);
   if (m_isDebugInfoEnabled)
     drawDebugInfo(drawer);
+  if (m_isMemoryWarningEnabled)
+    drawMemoryWarning(drawer);
 }

map/information_display.hpp

@@ -3,6 +3,7 @@
 #include "../geometry/point2d.hpp"
 #include "../geometry/rect2d.hpp"
 #include "../geometry/screenbase.hpp"
+#include "../base/timer.hpp"
 
 class DrawerYG;
 
@@ -43,6 +44,9 @@ private:
   double m_bottomShift;
   double m_visualScale;
 
+  my::Timer m_lastMemoryWarning;
+  bool m_isMemoryWarningEnabled;
+
 public:
 
   InformationDisplay();
@@ -77,5 +81,9 @@ public:
   void setDebugInfo(double frameDuration, int currentScale);
   void drawDebugInfo(DrawerYG * pDrawer);
 
+  void enableMemoryWarning(bool doEnable);
+  void memoryWarning();
+  void drawMemoryWarning(DrawerYG * pDrawer);
+
   void doDraw(DrawerYG * drawer);
 };