From 3998df869aab819c05b49627be29bd37c134baaa Mon Sep 17 00:00:00 2001
From: Michael Clemens // DK1MI <mclemens@noreply.codeberg.org>
Date: Tue, 30 May 2023 21:13:15 +0000
Subject: [PATCH] =?UTF-8?q?=E2=80=9Ejavascript.h=E2=80=9C=20=C3=A4ndern?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 javascript.h | 647 ++++++++++++++++++++++++++-------------------------
 1 file changed, 324 insertions(+), 323 deletions(-)

diff --git a/javascript.h b/javascript.h
index 611a9a9..a0689c4 100644
--- a/javascript.h
+++ b/javascript.h
@@ -1,324 +1,325 @@
-const char JAVASCRIPT[] PROGMEM = R"=====(
-<script>
-var okaytogo = true;
-var vu_meters_loaded = false;
-
-// Function for drawing the LED bar graphs
-function vumeter(elem, config){
-
-    // Settings
-    var max             = config.max || 100;
-    var boxCount        = config.boxCount || 10;
-    var boxCountRed     = config.boxCountRed || 2;
-    var boxCountYellow  = config.boxCountYellow || 3;
-    var boxGapFraction  = config.boxGapFraction || 0.2;
-    var jitter          = 0;//config.jitter || 0.02;
-
-    // Colours
-    var redOn     = 'rgba(255,47,30,0.9)';
-    var redOff    = 'rgba(64,12,8,0.9)';
-    var yellowOn  = 'rgba(255,215,5,0.9)';
-    var yellowOff = 'rgba(64,53,0,0.9)';
-    var greenOn   = 'rgba(53,255,30,0.9)';
-    var greenOff  = 'rgba(13,64,8,0.9)';
-
-    // Derived and starting values
-    var width = elem.width;
-    var height = elem.height;
-    var curVal = 0;
-
-    // Gap between boxes and box height
-    var boxHeight = height / (boxCount + (boxCount+1)*boxGapFraction);
-    var boxGapY = boxHeight * boxGapFraction;
-
-    var boxWidth = width - (boxGapY*2);
-    var boxGapX = (width - boxWidth) / 2;
-
-    // Canvas starting state
-    var c = elem.getContext('2d');
-
-    // Main draw loop
-    var draw = function(){
-
-        var targetVal = parseInt(elem.dataset.val, 10);
-
-        // Gradual approach
-        if (curVal <= targetVal){
-            curVal += (targetVal - curVal) / 5;
-        } else {
-            curVal -= (curVal - targetVal) / 5;
-        }
-        curVal = targetVal;
-
-        // Apply jitter
-        if (jitter > 0 && curVal > 0){
-            var amount = (Math.random()*jitter*max);
-            if (Math.random() > 0.5){
-                amount = -amount;
-            }
-            curVal += amount;
-        }
-        if (curVal < 0) {
-            curVal = 0;
-        }
-
-        c.save();
-        c.beginPath();
-        c.rect(0, 0, width, height);
-        c.fillStyle = 'rgb(32,32,32)';
-        c.fill();
-        c.restore();
-        drawBoxes(c, curVal);
-
-        requestAnimationFrame(draw);
-
-    };
-
-    // Draw the boxes
-    function drawBoxes(c, val){
-        c.save(); 
-        c.translate(boxGapX, boxGapY);
-        for (var i = 0; i < boxCount; i++){
-            var id = getId(i);
-
-            c.beginPath();
-            if (isOn(id, val)){
-                c.shadowBlur = 10;
-                c.shadowColor = getBoxColor(id, val);
-            }
-            c.rect(0, 0, boxWidth, boxHeight);
-            c.fillStyle = getBoxColor(id, val);
-            c.fill();
-            c.translate(0, boxHeight + boxGapY);
-        }
-        c.restore();
-    }
-
-    // Get the color of a box given it's ID and the current value
-    function getBoxColor(id, val){
-        // on colours
-        if (id > boxCount - boxCountRed){
-            return isOn(id, val)? redOn : redOff;
-        }
-        if (id > boxCount - boxCountRed - boxCountYellow){
-            return isOn(id, val)? yellowOn : yellowOff;
-        }
-        return isOn(id, val)? greenOn : greenOff;
-    }
-
-    function getId(index){
-        // The ids are flipped, so zero is at the top and
-        // boxCount-1 is at the bottom. The values work
-        // the other way around, so align them first to
-        // make things easier to think about.
-        return Math.abs(index - (boxCount - 1)) + 1;
-    }
-
-    function isOn(id, val){
-        // We need to scale the input value (0-max)
-        // so that it fits into the number of boxes
-        var maxOn = Math.ceil((val/max) * boxCount);
-        return (id <= maxOn);
-    }
-
-    draw();
-}
-
-setInterval(function() {
-  // Call a function repetatively
-  okaytogo = !okaytogo;
-  getDATA();
-}, 500);
-
-function load_vu_meters() {
-  vumeter(fwd_vu_meter, {
-    "boxCount": 10,
-    "boxGapFraction": 0.25,
-    "max": strtoint(data[12]*1000000),
-  });
-  vumeter(ref_vu_meter, {
-    "boxCount": 10,
-    "boxGapFraction": 0.25,
-    "max": strtoint(data[13]*1000000),
-  });
-  vumeter(swr_vu_meter, {
-    "boxCount": 10,
-    "boxGapFraction": 0.25,
-    "max": strtoint((data[14]-1)*100),
-  }); 
-}
-
-// plays a beep sound
-function beep() {
-    var snd = new Audio("data:audio/wav;base64,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");  
-    snd.play();
-}
-
-
-// Converts a String to Integer
-function strtoint(x) {
-  const parsed = parseInt(x);
-  if (isNaN(parsed)) { return 0; }
-  return parsed;
-}
-
-// Formats a double/float to a String with n digits after the decimal point
-function formatNum(num, separator, fraction) {
-  var str = num.toLocaleString('en-US');
-  str = str.replace(/\./, fraction);
-  str = str.replace(/,/g, separator);
-  str = str.substring(0, str.indexOf(fraction)+3);
-  return str;
-}
-
-
-// Takes a number, returns a String with the number
-// converted to uW, mW or Watt
-function convert_power(val){
-  let ret = "0";
-    if (val == 0) {
-      ret = "";
-    } else if (val < 0.001){
-      ret = formatNum(val*1000000,'','.') + " uW";
-    } else if (val < 1) {
-      ret = formatNum(val*1000,'','.') + " mW";
-    } else {
-      ret = formatNum(val*1.0,'','.') + " W";
-    }
-  return ret;
-}
-
-// returns a string of "--dBm" if the value is invalid
-function check_dbm(val){
-  let ret = "0";
-  if (isNaN(val)) {
-    ret = "-- dBm";
-  } else if (val == "") {
-    ret = "";
-  } else {
-    ret = val + " dBm";
-  }
-  return ret;
-}
-
-
-// gets data from backend and does a lot of stuff
-function getDATA() {
-  var xhttp = new XMLHttpRequest();
-  xhttp.onreadystatechange = function() {
-    if (this.readyState == 4 && this.status == 200) {
-      // Split the response string and create an array
-      data = this.responseText.split(";");
-      // display calculated power and dbm for FWD if voltage is between the lowest
-      // and highest value of the translation table
-      if (data[15] == "0") {
-        document.getElementById("FWDWatt").innerHTML = convert_power(data[0]);
-        document.getElementById("FWDdBm").innerHTML = check_dbm(data[1]);
-        document.getElementById("FWDVoltage").innerHTML = data[2];
-        // display LED bar graph for FWD if enabled via backend configuration
-        if (data[17] == "true") {
-          document.getElementById("fwd_led_box").style.display = 'inline-block';
-          fwd_vu_meter.setAttribute('data-val', strtoint(data[0]*1000000));
-        } else {
-          document.getElementById("fwd_led_box").style.display = 'none';
-        }
-      } else { // voltage is out out bounds
-        document.getElementById("FWDWatt").innerHTML = "---";
-        document.getElementById("FWDdBm").innerHTML = "---";
-        document.getElementById("FWDVoltage").innerHTML = data[2];
-        // display LED bar graph for FWD if enabled via backend configuration
-        // set value to 0
-        if (data[17] == "true") {
-          fwd_vu_meter.setAttribute('data-val', 0);
-        } else {
-          document.getElementById("fwd_led_box").style.display = 'none';
-        }
-      }
-      // display calculated power and dbm for REF if voltage is between the lowest
-      // and highest value of the translation table
-      if (data[16] == "0") {
-        document.getElementById("REFWatt").innerHTML = convert_power(data[3]);
-        document.getElementById("REFdBm").innerHTML = check_dbm(data[4]);
-        document.getElementById("REFVoltage").innerHTML = data[5];
-        // display LED bar graph for REF if enabled via backend configuration
-        if (data[18] == "true") {
-          document.getElementById("ref_led_box").style.display = 'inline-block';
-          ref_vu_meter.setAttribute('data-val', strtoint(data[3]*1000000));
-        } else {
-          document.getElementById("ref_led_box").style.display = 'none';
-        }
-      } else { // voltage is out out bounds
-        document.getElementById("REFWatt").innerHTML = "---";
-        document.getElementById("REFdBm").innerHTML = "---";
-        document.getElementById("REFVoltage").innerHTML = data[5];
-        // display LED bar graph for REF if enabled via backend configuration
-        // set value to 0
-        if (data[18] == "true") {
-          ref_vu_meter.setAttribute('data-val', 0);
-        } else {
-          document.getElementById("ref_led_box").style.display = 'none';
-        }
-      }
-      document.getElementById("VSWRValue").innerHTML = data[6];
-      //document.getElementById("RLValue").innerHTML = data[7];
-      document.getElementById("BANDValue").innerHTML = data[8]; // displays the chosen band
-      document.getElementById("AntennaName").innerHTML = data[10]; // displays the name of the antenna
-      document.getElementById("max_led_pwr_fwd").innerHTML = data[12]; // sets the FWD LED bar max value
-      document.getElementById("max_led_pwr_ref").innerHTML = data[13]; // sets the REF LED bar max value
-      document.getElementById("max_led_vswr").innerHTML = data[14]; // sets the VSWR LED bar max value
-      // displays "--" as VSWR if the value is too high or number is invalid
-      if (data[6] == "-1" || data[6] == "inf" || data[15] == "1" || data[16] == "1") {
-        document.getElementById("VSWRValue").innerHTML = "--";
-        document.getElementById("RLValue").innerHTML = "--";
-        document.getElementById("vswr_box").className = "box redbox";
-      } else {
-        // VSWR is ok
-        document.getElementById("RLValue").innerHTML = data[7];
-        document.getElementById("VSWRValue").innerHTML = data[6];
-        // displays the VSWR box with red background if VSWR value is higher than the user configured limit
-        if (parseFloat(data[6]) >= parseFloat(data[9]) || data[6] == "inf") {
-          document.getElementById("vswr_box").className = "box redbox";
-          // beeps if configured to do so
-          if (data[11] == "true") {
-            beep();
-          }
-        } else {
-          // VSWR is fine, box is displayed with green background
-          document.getElementById("vswr_box").className = "box";
-        }
-      }
-      // displays FWD box with red background if value as been replaced with "--"
-      if (data[0].startsWith('--') || data[1].startsWith('--')){
-        document.getElementById("fwd_box").className = "box redbox";
-      } else {
-        document.getElementById("fwd_box").className = "box";
-      }
-      // displays REF box with red background if value as been replaced with "--"
-      if (data[3].startsWith('--') || data[4].startsWith('--')){
-        document.getElementById("ref_box").className = "box redbox";
-      } else {
-        document.getElementById("ref_box").className = "box";
-      }
-      // display VSWR bar graph if enabled via backend configuration
-      if (data[19] == "true") {
-        document.getElementById("vswr_led_box").style.display = 'inline-block';
-        // if SWR value is invalid -> set to 0
-        if (data[6] == "-1" || data[6] == "inf" || data[15] == "1" || data[16] == "1") {
-          swr_vu_meter.setAttribute('data-val', 0);
-        } else {
-          swr_vu_meter.setAttribute('data-val', strtoint((data[6]-1)*100)); 
-        }
-      } else {
-        document.getElementById("vswr_led_box").style.display = 'none';
-      }
-      if (!vu_meters_loaded){
-        load_vu_meters();
-        vu_meters_loaded = true;
-      }
-    }
-  };
-  xhttp.open("GET", "readDATA", true);
-  xhttp.send();
-}
-</script>
+const char JAVASCRIPT[] PROGMEM = R"=====(
+<script>
+var okaytogo = true;
+var vu_meters_loaded = false;
+
+// Function for drawing the LED bar graphs
+function vumeter(elem, config){
+
+    // Settings
+    var max             = config.max || 100;
+    var boxCount        = config.boxCount || 10;
+    var boxCountRed     = config.boxCountRed || 2;
+    var boxCountYellow  = config.boxCountYellow || 3;
+    var boxGapFraction  = config.boxGapFraction || 0.2;
+    var jitter          = 0;//config.jitter || 0.02;
+
+    // Colours
+    var redOn     = 'rgba(255,47,30,0.9)';
+    var redOff    = 'rgba(64,12,8,0.9)';
+    var yellowOn  = 'rgba(255,215,5,0.9)';
+    var yellowOff = 'rgba(64,53,0,0.9)';
+    var greenOn   = 'rgba(53,255,30,0.9)';
+    var greenOff  = 'rgba(13,64,8,0.9)';
+
+    // Derived and starting values
+    var width = elem.width;
+    var height = elem.height;
+    var curVal = 0;
+
+    // Gap between boxes and box height
+    var boxHeight = height / (boxCount + (boxCount+1)*boxGapFraction);
+    var boxGapY = boxHeight * boxGapFraction;
+
+    var boxWidth = width - (boxGapY*2);
+    var boxGapX = (width - boxWidth) / 2;
+
+    // Canvas starting state
+    var c = elem.getContext('2d');
+
+    // Main draw loop
+    var draw = function(){
+
+        var targetVal = parseInt(elem.dataset.val, 10);
+
+        // Gradual approach
+        if (curVal <= targetVal){
+            curVal += (targetVal - curVal) / 5;
+        } else {
+            curVal -= (curVal - targetVal) / 5;
+        }
+        curVal = targetVal;
+
+        // Apply jitter
+        if (jitter > 0 && curVal > 0){
+            var amount = (Math.random()*jitter*max);
+            if (Math.random() > 0.5){
+                amount = -amount;
+            }
+            curVal += amount;
+        }
+        if (curVal < 0) {
+            curVal = 0;
+        }
+
+        c.save();
+        c.beginPath();
+        c.rect(0, 0, width, height);
+        c.fillStyle = 'rgb(32,32,32)';
+        c.fill();
+        c.restore();
+        drawBoxes(c, curVal);
+
+        requestAnimationFrame(draw);
+
+    };
+
+    // Draw the boxes
+    function drawBoxes(c, val){
+        c.save(); 
+        c.translate(boxGapX, boxGapY);
+        for (var i = 0; i < boxCount; i++){
+            var id = getId(i);
+
+            c.beginPath();
+            if (isOn(id, val)){
+                c.shadowBlur = 10;
+                c.shadowColor = getBoxColor(id, val);
+            }
+            c.rect(0, 0, boxWidth, boxHeight);
+            c.fillStyle = getBoxColor(id, val);
+            c.fill();
+            c.translate(0, boxHeight + boxGapY);
+        }
+        c.restore();
+    }
+
+    // Get the color of a box given it's ID and the current value
+    function getBoxColor(id, val){
+        // on colours
+        if (id > boxCount - boxCountRed){
+            return isOn(id, val)? redOn : redOff;
+        }
+        if (id > boxCount - boxCountRed - boxCountYellow){
+            return isOn(id, val)? yellowOn : yellowOff;
+        }
+        return isOn(id, val)? greenOn : greenOff;
+    }
+
+    function getId(index){
+        // The ids are flipped, so zero is at the top and
+        // boxCount-1 is at the bottom. The values work
+        // the other way around, so align them first to
+        // make things easier to think about.
+        return Math.abs(index - (boxCount - 1)) + 1;
+    }
+
+    function isOn(id, val){
+        // We need to scale the input value (0-max)
+        // so that it fits into the number of boxes
+        var maxOn = Math.ceil((val/max) * boxCount);
+        return (id <= maxOn);
+    }
+
+    draw();
+}
+
+setInterval(function() {
+  // Call a function repetatively
+  okaytogo = !okaytogo;
+  getDATA();
+}, 500);
+
+function load_vu_meters() {
+  vumeter(fwd_vu_meter, {
+    "boxCount": 10,
+    "boxGapFraction": 0.25,
+    "max": strtoint(data[12]*1000000),
+  });
+  vumeter(ref_vu_meter, {
+    "boxCount": 10,
+    "boxGapFraction": 0.25,
+    "max": strtoint(data[13]*1000000),
+  });
+  vumeter(swr_vu_meter, {
+    "boxCount": 10,
+    "boxGapFraction": 0.25,
+    "max": strtoint((data[14]-1)*100),
+  }); 
+}
+
+// plays a beep sound
+function beep() {
+    var snd = new Audio("data:audio/wav;base64,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");  
+    snd.play();
+}
+
+
+// Converts a String to Integer
+function strtoint(x) {
+  const parsed = parseInt(x);
+  if (isNaN(parsed)) { return 0; }
+  return parsed;
+}
+
+// Formats a double/float to a String with n digits after the decimal point
+function formatNum(num, separator, fraction) {
+  var str = num.toLocaleString('en-US');
+  str = str.replace(/\./, fraction);
+  str = str.replace(/,/g, separator);
+  str = str.substring(0, str.indexOf(fraction)+3);
+  return str;
+}
+
+
+// Takes a number, returns a String with the number
+// converted to uW, mW or Watt
+function convert_power(val){
+  let ret = "0";
+    if (val == 0) {
+      ret = "";
+    } else if (val < 0.001){
+      ret = formatNum(val*1000000,'','.') + " uW";
+    } else if (val < 1) {
+      ret = formatNum(val*1000,'','.') + " mW";
+    } else {
+      ret = formatNum(val*1.0,'','.') + " W";
+    }
+  return ret;
+}
+
+// returns a string of "--dBm" if the value is invalid
+function check_dbm(val){
+  let ret = "0";
+  if (isNaN(val)) {
+    ret = "-- dBm";
+  } else if (val == "") {
+    ret = "";
+  } else {
+    ret = val + " dBm";
+  }
+  return ret;
+}
+
+
+// gets data from backend and does a lot of stuff
+function getDATA() {
+  var xhttp = new XMLHttpRequest();
+  xhttp.onreadystatechange = function() {
+    if (this.readyState == 4 && this.status == 200) {
+      // Split the response string and create an array
+      data = this.responseText.split(";");
+      // display calculated power and dbm for FWD if voltage is between the lowest
+      // and highest value of the translation table
+      if (data[15] == "0") {
+        document.getElementById("FWDWatt").innerHTML = convert_power(data[0]);
+        document.getElementById("FWDdBm").innerHTML = check_dbm(data[1]);
+        document.getElementById("FWDVoltage").innerHTML = data[2];
+        // display LED bar graph for FWD if enabled via backend configuration
+        if (data[17] == "true") {
+          document.getElementById("fwd_led_box").style.display = 'inline-block';
+          fwd_vu_meter.setAttribute('data-val', strtoint(data[0]*1000000));
+        } else {
+          document.getElementById("fwd_led_box").style.display = 'none';
+        }
+      } else { // voltage is out out bounds
+        document.getElementById("FWDWatt").innerHTML = "---";
+        document.getElementById("FWDdBm").innerHTML = "---";
+        document.getElementById("FWDVoltage").innerHTML = data[2];
+        // display LED bar graph for FWD if enabled via backend configuration
+        // set value to 0
+        if (data[17] == "true") {
+          fwd_vu_meter.setAttribute('data-val', 0);
+        } else {
+          document.getElementById("fwd_led_box").style.display = 'none';
+        }
+      }
+      // display calculated power and dbm for REF if voltage is between the lowest
+      // and highest value of the translation table
+      if (data[16] == "0") {
+        document.getElementById("REFWatt").innerHTML = convert_power(data[3]);
+        document.getElementById("REFdBm").innerHTML = check_dbm(data[4]);
+        document.getElementById("REFVoltage").innerHTML = data[5];
+        // display LED bar graph for REF if enabled via backend configuration
+        if (data[18] == "true") {
+          document.getElementById("ref_led_box").style.display = 'inline-block';
+          ref_vu_meter.setAttribute('data-val', strtoint(data[3]*1000000));
+        } else {
+          document.getElementById("ref_led_box").style.display = 'none';
+        }
+      } else { // voltage is out out bounds
+        document.getElementById("REFWatt").innerHTML = "---";
+        document.getElementById("REFdBm").innerHTML = "---";
+        document.getElementById("REFVoltage").innerHTML = data[5];
+        // display LED bar graph for REF if enabled via backend configuration
+        // set value to 0
+        if (data[18] == "true") {
+          ref_vu_meter.setAttribute('data-val', 0);
+        } else {
+          document.getElementById("ref_led_box").style.display = 'none';
+        }
+      }
+      document.getElementById("VSWRValue").innerHTML = data[6];
+      //document.getElementById("RLValue").innerHTML = data[7];
+      document.getElementById("BANDValue").innerHTML = data[8]; // displays the chosen band
+      document.getElementById("AntennaName").innerHTML = data[10]; // displays the name of the antenna
+      document.getElementById("max_led_pwr_fwd").innerHTML = data[12]; // sets the FWD LED bar max value
+      document.getElementById("max_led_pwr_ref").innerHTML = data[13]; // sets the REF LED bar max value
+      document.getElementById("max_led_vswr").innerHTML = data[14]; // sets the VSWR LED bar max value
+      document.getElementById("version").innerHTML = data[20]; // sets the version in the footer
+      // displays "--" as VSWR if the value is too high or number is invalid
+      if (data[6] == "-1" || data[6] == "inf" || data[15] == "1" || data[16] == "1") {
+        document.getElementById("VSWRValue").innerHTML = "--";
+        document.getElementById("RLValue").innerHTML = "--";
+        document.getElementById("vswr_box").className = "box redbox";
+      } else {
+        // VSWR is ok
+        document.getElementById("RLValue").innerHTML = data[7];
+        document.getElementById("VSWRValue").innerHTML = data[6];
+        // displays the VSWR box with red background if VSWR value is higher than the user configured limit
+        if (parseFloat(data[6]) >= parseFloat(data[9]) || data[6] == "inf") {
+          document.getElementById("vswr_box").className = "box redbox";
+          // beeps if configured to do so
+          if (data[11] == "true") {
+            beep();
+          }
+        } else {
+          // VSWR is fine, box is displayed with green background
+          document.getElementById("vswr_box").className = "box";
+        }
+      }
+      // displays FWD box with red background if value as been replaced with "--"
+      if (data[0].startsWith('--') || data[1].startsWith('--')){
+        document.getElementById("fwd_box").className = "box redbox";
+      } else {
+        document.getElementById("fwd_box").className = "box";
+      }
+      // displays REF box with red background if value as been replaced with "--"
+      if (data[3].startsWith('--') || data[4].startsWith('--')){
+        document.getElementById("ref_box").className = "box redbox";
+      } else {
+        document.getElementById("ref_box").className = "box";
+      }
+      // display VSWR bar graph if enabled via backend configuration
+      if (data[19] == "true") {
+        document.getElementById("vswr_led_box").style.display = 'inline-block';
+        // if SWR value is invalid -> set to 0
+        if (data[6] == "-1" || data[6] == "inf" || data[15] == "1" || data[16] == "1") {
+          swr_vu_meter.setAttribute('data-val', 0);
+        } else {
+          swr_vu_meter.setAttribute('data-val', strtoint((data[6]-1)*100)); 
+        }
+      } else {
+        document.getElementById("vswr_led_box").style.display = 'none';
+      }
+      if (!vu_meters_loaded){
+        load_vu_meters();
+        vu_meters_loaded = true;
+      }
+    }
+  };
+  xhttp.open("GET", "readDATA", true);
+  xhttp.send();
+}
+</script>
 )=====";
\ No newline at end of file