[apps/statistics] Make data model inherit from curve view window

Change-Id: Iabf36299d20b17d9ac6fb4ae3a6166513f9a50c7

apps/statistics/data.cpp

@@ -1,4 +1,5 @@
 #include "data.h"
+#include <float.h>
 
 namespace Statistics {
 
@@ -45,4 +46,56 @@ void Data::deletePairAtIndex(int index) {
   m_sizes[m_numberOfPairs] = 1;
 }
 
+int Data::sizeOfValuesBetweenBounds(float lowerBound, float upperBound) const {
+  int result = 0;
+  for (int k = 0; k < m_numberOfPairs; k++) {
+    if (m_values[k] < upperBound && lowerBound <= m_values[k]) {
+      result += m_sizes[k];
+    }
+  }
+  return result;
+}
+
+float Data::xMin() {
+  float valueMin = FLT_MAX;
+  for (int k = 0; k < m_numberOfPairs; k++) {
+    if (m_values[k] < valueMin) {
+      valueMin = m_values[k];
+    }
+  }
+  return valueMin;
+}
+
+float Data::xMax() {
+  float valueMax = -FLT_MAX;
+  for (int k = 0; k < m_numberOfPairs; k++) {
+    if (m_values[k] > valueMax) {
+      valueMax = m_values[k];
+    }
+  }
+  float valueMin = xMin();
+  if (valueMax - valueMin >  k_maxRangeValue) {
+    valueMax = valueMin + 10.0f;
+  }
+  return valueMax;
+}
+
+float Data::yMin() {
+  return 0.0f;
+}
+
+float Data::yMax() {
+  float sizeMax = -FLT_MAX;
+  for (int k = 0; k < m_numberOfPairs; k++) {
+    if (m_sizes[k] > sizeMax) {
+      sizeMax = m_sizes[k];
+    }
+  }
+  return sizeMax;
+}
+
+float Data::xGridUnit() {
+  return computeGridUnit(Axis::X);
+}
+
 }

apps/statistics/data.h

@@ -1,9 +1,11 @@
 #ifndef STATISTICS_DATA_H
 #define STATISTICS_DATA_H
 
+#include "../curve_view_window.h"
+
 namespace Statistics {
 
-class Data {
+class Data : public CurveViewWindow {
 public:
   Data();
   // Delete the implicit copy constructor: the object is heavy
@@ -14,9 +16,17 @@ public:
   void setValueAtIndex(float value, int index);
   void setSizeAtIndex(int size, int index);
   void deletePairAtIndex(int index);
+  int sizeOfValuesBetweenBounds(float lowerBound, float upperBound) const;
+  float xMin() override;
+  // if the range of value is to wide, value max returns valueMin + 10
+  float xMax() override;
+  float yMin() override;
+  float yMax() override;
+  float xGridUnit() override;
   // TODO: decide the max number of elements after optimization
   constexpr static int k_maxNumberOfPairs = 500;
 private:
+  constexpr static int k_maxRangeValue = 320;
   int m_sizes[k_maxNumberOfPairs];
   float m_values[k_maxNumberOfPairs];
   int m_numberOfPairs;