Diff: Menu.h

Revision:

0:1e597b0f8b3b

Child:

2:fcde41900fa5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Menu.h	Fri Mar 20 23:22:41 2015 +0000
@@ -0,0 +1,86 @@
+
+#ifndef _MENU_H_
+#define _MENU_H_
+
+#include<stdio.h>
+#include <stdlib.h>
+#include "st7565LCD.h"
+#include "Item.h"
+
+//define control keys
+#define NL    121 //newline char
+#define BS     8 //backspace
+#define UP   119  
+#define DOWN 115
+
+int const MAX_ITEMS = 16;
+int const TITLE_LINE = 1;
+int const FIRST_ITEM_LINE = 2;
+int const LAST_ITEM_LINE = 7;
+
+class Menu: public Item {
+    public:
+        //Menu will have a limited number of items
+        Item ** items;
+        int size;
+        bool isScreen;
+        //selected items variables
+        int selected, current_line;
+        
+        //menu constructor
+        Menu(char * t, ST7565 *lcd, UI * ui){
+            title = t;
+            st7565 = lcd;
+            items = new Item*[MAX_ITEMS];
+            selected = 0;
+            size = 0;
+            current_line = FIRST_ITEM_LINE;
+            isScreen = false;
+            isSelectable = false;
+            this->ui = ui;
+        }
+        
+        //menu item constructor - go to a screen
+        Menu(char * t, Item *screen, UI *ui){
+            title = t;
+            st7565 = NULL;
+            items = new Item*[1];
+            items[0] = screen;
+            selected = 0;
+            size = 1;
+            current_line = FIRST_ITEM_LINE;
+            isScreen = true;
+            isSelectable = true;
+            this->ui = ui;
+        }
+        
+        //display the menu
+        virtual void display(void);
+        
+        //update current selection
+        virtual void update(char c);
+        
+        //get the title of the menu
+        virtual char * getTitle(void){
+            return title;
+        }
+        
+        //set the title
+        void setTitle(char * t){
+            title = t;
+        }
+        
+         //highlights the current selection
+        void addItem(Item * i);
+        
+        private:
+             //display items on a new screen starting with a specific index
+             void display_items(int index);
+             //draw arrows on right side to indicate there are more items up or down
+             void draw_arrows(int line, char c);
+             //draw the circle indicating which item is selected
+             void draw_selected(void);
+};
+
+#endif
+