keypad class

src/keypad.cpp

@@ -8,17 +8,10 @@
 
 static LGFX gfx;
 
-constexpr float FONT_SIZE_NORMAL = 4.0;
-constexpr float FONT_SIZE_LARGE = 8.0;
-
 static const float_t BUTTON_WIDTH = 115;
 static const float_t BUTTON_HEIGHT = 115;
-static int last_index = -1;
 
-static String oldinput = "";
-static String input = "";
-
-int index(int x, int y)
+int Keypad::get_button_index_from_touch(int x, int y)
 {
     for (int index = 0; index <= 11; index++)
     {
@@ -34,10 +27,26 @@ int index(int x, int y)
     return -1;
 }
 
-void drawButton(int index, String label)
+void Keypad::draw_button(int i)
 {
-    float_t x = (125 * (index % 3)) + 15;
-    float_t y = (125 * (index / 3)) + 20;
+    gfx.setTextSize(FONT_SIZE_NORMAL);
+
+    String label = String(i + 1);
+    if (i == 9)
+    {
+        label = String("<");
+    }
+    if (i == 10)
+    {
+        label = String("0");
+    }
+    if (i == 11)
+    {
+        label = String(">");
+    }
+
+    float_t x = (125 * (i % 3)) + 15;
+    float_t y = (125 * (i / 3)) + 20;
 
     gfx.setCursor(x + (115 / 2) - (gfx.fontWidth() / 2), y + (115 / 2) - (gfx.fontHeight() / 2));
     gfx.print(label);
@@ -49,30 +58,7 @@ void drawButton(int index, String label)
     gfx.drawFastVLine(x + BUTTON_WIDTH, y, BUTTON_HEIGHT);
 }
 
-void drawButtons()
-{
-    gfx.setTextSize(FONT_SIZE_NORMAL);
-    for (int i = 0; i <= 11; i++)
-    {
-        String label = String(i + 1);
-        if (i == 9)
-        {
-            label = String("<");
-        }
-        if (i == 10)
-        {
-            label = String("0");
-        }
-        if (i == 11)
-        {
-            label = String(">");
-        }
-
-        drawButton(i, label);
-    }
-}
-
-void drawInputField()
+void Keypad::draw_input_field()
 {
     int x = 405;
     int y = 20;
@@ -84,7 +70,7 @@ void drawInputField()
     gfx.drawFastVLine(x + 520, y, 115);
 }
 
-void drawInput()
+void Keypad::draw_input()
 {
     int x = 405;
     int y = 20;
@@ -110,11 +96,8 @@ void drawInput()
     gfx.setEpdMode(epd_mode_t::epd_fast);
 }
 
-void keypad_init()
+void Keypad::draw()
 {
-    gfx.init();
-    gfx.setRotation(1);
-
     gfx.setEpdMode(epd_mode_t::epd_quality);
     gfx.fillScreen(TFT_WHITE);
     gfx.waitDisplay();
@@ -124,12 +107,24 @@ void keypad_init()
     gfx.setColor(TFT_BLACK);
     gfx.waitDisplay();
 
-    drawButtons();
-    drawInputField();
-    drawInput();
+    for (int i = 0; i <= 11; i++)
+    {
+        this->draw_button(i);
+    }
+
+    draw_input_field();
+    draw_input();
 }
 
-void keypad_write(String payload)
+Keypad::Keypad()
+{
+    gfx.init();
+    gfx.setRotation(1);
+
+    draw();
+}
+
+void Keypad::write(String payload)
 {
     payload.replace("_", " ");
 
@@ -144,7 +139,7 @@ void keypad_write(String payload)
     gfx.printf("%s", payload);
 }
 
-std::optional<String> checkForInput()
+std::optional<String> Keypad::check_input()
 {
     if (M5.TP.available())
     {
@@ -157,7 +152,7 @@ std::optional<String> checkForInput()
 
         tp_finger_t fingerItem = M5.TP.readFinger(0);
 
-        int i = index(fingerItem.x, fingerItem.y);
+        int i = get_button_index_from_touch(fingerItem.x, fingerItem.y);
         if (last_index != i)
         {
             last_index = i;
@@ -190,12 +185,12 @@ std::optional<String> checkForInput()
     return std::nullopt;
 }
 
-std::optional<String> keypad_loop()
+std::optional<String> Keypad::get_input()
 {
-    auto value = checkForInput();
+    auto value = check_input();
     if (oldinput != input)
     {
-        drawInput();
+        draw_input();
         oldinput = input;
     }
 

src/keypad.hpp

@@ -4,8 +4,28 @@
 #include <WString.h>
 #include <optional>
 
-void keypad_init();
-void keypad_write(String);
-std::optional<String> keypad_loop();
+constexpr float FONT_SIZE_NORMAL = 4.0;
+constexpr float FONT_SIZE_LARGE = 8.0;
+
+class Keypad
+{
+public:
+    Keypad();
+    int get_button_index_from_touch(int x, int y);
+    void draw();
+    void write(String);
+    std::optional<String> get_input();
+
+private:
+    int last_index = -1;
+    String oldinput = "";
+    String input = "";
+
+    void draw_button(int index);
+    void draw_input_field();
+    void draw_input();
+
+    std::optional<String> check_input();
+};
 
 #endif

src/main.cpp

@@ -17,6 +17,7 @@
 static WiFiUDP ntpUDP;
 static NTPClient timeClient(ntpUDP);
 static MQTT *mqtt;
+static Keypad *keypad;
 
 static bool is_disarmed = false;
 
@@ -28,13 +29,13 @@ void mqtt_callback(char *topic, byte *payload, unsigned int length)
   String state((const char *)payload);
   is_disarmed = state == "disarmed";
 
-  Serial.println(state);
-  keypad_write(state);
-}
+  if (state == "armed_away")
+  {
+    keypad->draw();
+  }
 
-void setupTime()
-{
-  timeClient.begin();
+  Serial.println(state);
+  keypad->write(state);
 }
 
 void lock()
@@ -55,18 +56,18 @@ void initWifi(Settings *settings)
 {
   if (!settings)
   {
-    keypad_write("no settings");
+    keypad->write("no settings");
     return;
   }
 
   if (isConnecting)
   {
-    keypad_write("already connecting");
+    keypad->write("already connecting");
     return;
   }
 
   isConnecting = true;
-  keypad_write("connecting");
+  keypad->write("connecting");
 
   WiFi.begin(settings->gettext("wifi:ssid"), settings->gettext("wifi:password"));
 
@@ -88,11 +89,11 @@ void initWifi(Settings *settings)
     Serial.print("Local IP: ");
     Serial.println(WiFi.localIP());
     isConnecting = false;
-    keypad_write("connected");
+    keypad->write("connected");
   }
   else
   {
-    keypad_write("failed to connect");
+    keypad->write("failed to connect");
     isConnecting = false;
     return;
   }
@@ -115,14 +116,14 @@ void setup()
 {
   M5.begin();
 
-  keypad_init();
-  keypad_write("loading");
+  keypad = new Keypad();
+  keypad->write("loading");
 
   auto settings = new Settings();
 
   if (!settings)
   {
-    keypad_write("unable to load settings");
+    keypad->write("unable to load settings");
     return;
   }
 
@@ -130,7 +131,7 @@ void setup()
 
   initWifi(settings);
   mqtt->connect();
-  setupTime();
+  timeClient.begin();
   initTOTP(settings);
 }
 
@@ -148,24 +149,12 @@ void submit(String code)
   lock();
 }
 
-// unsigned long lastBtnPressed = millis();
-// void checkForButton()
-// {
-//   M5.BtnP.read();
-//   if (M5.BtnP.isPressed() && millis() - lastBtnPressed > 1000)
-//   {
-//     lastBtnPressed = millis(); // try and debouce, not really working i guess
-//     initWifi();
-//   }
-// }
-
 void loop()
 {
   timeClient.update();
   mqtt->loop();
 
-  // checkForButton();
-  auto value = keypad_loop();
+  auto value = keypad->get_input();
   if (value.has_value())
     submit(value.value());
 }