New class added for variable manipulation.

DisplayESP32.ino

@@ -14,6 +14,7 @@
 #define MAX_OPTIONS 10      //Maximum number of options for each menu
 #define MAX_MENUS 3
 #define MAX_GRAPHS 3
+#define MAX_MODIFIERS 3
 #define DISP_WIDTH 128      // OLED display width
 #define DISP_HEIGHT 64      // OLED display height
 #define REFRESH 10          //Refresh time in ms
@@ -80,7 +81,7 @@ class Option{
   }
 };
 
-class Menu{    //ContentType (1)
+class Menu{    //ContentType (0)
   private:
 
   int sizex;                  //X size for each option in the menu
@@ -166,7 +167,7 @@ class Menu{    //ContentType (1)
   }
 };
 
-class Graph{
+class Graph{     //ContentType (1)
   private:
 
   String title;
@@ -411,14 +412,82 @@ class Graph{
   
 };
 
+class Modifier{       //ContentType (2)
+  private:
+
+  String title;
+  int *value;
+  int max;
+  int min;
+  int interval;
+
+  int previousScreen = 0;
+  int previousContentType = 0;
+
+  public:
+
+  void configure(String title, int *value, int max, int min, int interval){
+    this->value = value;
+    this->max = max;
+    this->min = min;
+    this->interval = interval;
+  }
+
+  void drawModifier(){
+    display.clearDisplay();
+    display.fillRect(0, 0,  127 , 16, SSD1306_WHITE);
+    display.setTextColor(SSD1306_BLACK);
+    display.setTextSize(1);
+    display.setCursor(2, 4);
+    display.println(this->title);
+
+    display.setTextColor(SSD1306_WHITE);
+    display.setTextSize(3);
+    display.setCursor(2, ((DISP_HEIGHT - 16 - 20)/2) + 20);
+    display.println(*this->value);
+  }
+
+  void increaseValue(){
+    if((*this->value + interval) <= this->max){
+      *this->value += interval;
+    }
+  }
+
+  void decreaseValue(){
+    if((*this->value - interval) >= this->min){
+      *this->value -= interval;
+    }
+  }
+
+  void setPreviousScreen(int prev){
+    this->previousScreen = prev;
+  }
+
+  void setPreviousContentType(int prev){
+    this->previousContentType = prev;
+  }
+
+  int getPreviousScreen(){
+    int prev = this->previousScreen;
+    return prev;
+  }
+
+  int getPreviousContentType(){
+    int prev = this->previousContentType;
+    return prev;
+  }
+};
 
 class Screen{
   private:
   
   Menu menu[MAX_MENUS];  //Array of menus to use
   Graph graph[MAX_GRAPHS];  //Array of graphs to use
+  Modifier modifier[MAX_MODIFIERS];  //Array of modifiers to use
+
   int counterM = 0;        //Number of menus created
   int counterG = 0;        //Number of graphs created
+  int counterMod = 0;
   bool redraw = true;      //Redraw interface for when there is a change of screen
   int currentScreen = 0;
   int contentType = 0;
@@ -482,6 +551,11 @@ class Screen{
     counterG++;
   }
 
+  void createModifier(String title, int *value, int max, int min, int interval){   //This method is used for the creation of a menu
+    this->modifier[counterMod].configure(title, value, max, min, interval);
+    this->counterMod++;
+  }
+
 /*  
   void redrawFlag(){
     this->redraw = true;
@@ -489,6 +563,7 @@ class Screen{
 */
 
 //The following method is used for assingning a value to a graph
+//This can be avoided using pointers to the variable to plot in the graph
   void graphAssignValue(int graphIndex, double value){
     this->graph[graphIndex].assignValue(value);
     this->redraw = true;