chart improvements

build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+xterm -title "ESP html build" -e "source $HOME/.bashrc && make -B -j4"

esp_meas.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.6.0, 2016-03-27T01:16:02. -->
+<!-- Written by QtCreator 3.6.0, 2016-03-28T04:35:00. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

html_src/gulpfile.js

@@ -3,6 +3,8 @@ var autoprefixer = require('autoprefixer');
 
 elixir.config.css.autoprefix.options.browsers = ["> 2.5% in CZ"];
 elixir.config.css.autoprefix.options.flexbox = "no-2009";
+elixir.config.css.cssnano.pluginOptions.discardComments = {removeAll: true};
+elixir.config.css.cssnano.pluginOptions.colormin = false;
 
 // var info = autoprefixer(elixir.config.css.autoprefix).info();
 // console.log(info);

html_src/js-src/waveform.js

@@ -77,7 +77,7 @@ var wfm = (function () {
 			return;
 		}
 
-		buildChart(resp.samples, 'Sample Nr.', 'ADC value');
+		buildChart(json.samples, 'Sample Nr.', 'ADC value');
 	}
 
 	wfm.init = function() {
@@ -86,10 +86,19 @@ var wfm = (function () {
 		//		"success": true
 		//	};
 
-		$('#load').on('click', function() {
+		function clickHdl() {
 			var samples = $('#count').val();
 
-			$().get('http://192.168.1.13/api/raw.json?n='+samples, onRxData, true, true);
+			//http://192.168.1.13
+			$().get('/api/raw.json?n='+samples, onRxData, true, true);
+		}
+
+		$('#load').on('click', clickHdl);
+
+		$('#count').on('keyup', function(e) {
+			if (e.which == 13) {
+				clickHdl();
+			}
 		});
 	};
 

html_src/sass/app.scss

@@ -1,5 +1,4 @@
 @import "normalize";
-@import "lib/chartist/chartist";
 @import "lib/bourbon/bourbon";
 
 @import "grid-settings";
@@ -7,6 +6,8 @@
 
 @import "utils/index";
 
+@import "lib/chartist/chartist";
+
 $form-label-w: 130px;
 $form-label-gap: 8px;
 $form-field-w: 250px;

html_src/sass/lib/chartist/_chartist.scss

@@ -116,6 +116,7 @@
 
 	.ct-axis-title {
 		fill: $ct-axis-label-color;
+		@include noselect;
 	}
 
 	// --- Label ---

libesphttpd/core/httpd.c

@@ -28,6 +28,8 @@ Esp8266 http server - core routines
 //size of the backlog.
 #define MAX_BACKLOG_SIZE (4*1024)
 
+#define MAX_CORS_TOKEN_LEN 256
+
 //This gets set at init time.
 static HttpdBuiltInUrl *builtInUrls;
 
@@ -48,6 +50,7 @@ struct HttpSendBacklogItem {
 //Private data for http connection
 struct HttpdPriv {
 	char head[MAX_HEAD_LEN];
+	char corsToken[MAX_CORS_TOKEN_LEN];
 	int headPos;
 	char *sendBuff;
 	int sendBuffLen;
@@ -91,15 +94,24 @@ static const ICACHE_RODATA_ATTR MimeMap mimeTypes[]={
 };
 
 //Returns a static char* to a mime type for a given url to a file.
-const char ICACHE_FLASH_ATTR *httpdGetMimetype(const char *url) {
+const char ICACHE_FLASH_ATTR *httpdGetMimetype(const char *filepath) {
 	int i=0;
-	//Go find the extension
-	const char *ext=url+(strlen(url)-1);
-	while (ext!=url && *ext!='.') ext--;
+	//Go find the extension (searching from the end)
+	const char *ext=filepath+(strlen(filepath)-1);
+	while (ext!=filepath && *ext!='.') ext--;
 	if (*ext=='.') ext++;
 
 	//ToDo: strcmp is case sensitive; we may want to do case-intensive matching here...
 	while (mimeTypes[i].ext!=NULL && strcmp(ext, mimeTypes[i].ext)!=0) i++;
+
+	if (mimeTypes[i].ext == NULL) {
+		// we didn't find any proper match
+		if (strncmp(filepath, "/json/", 6) == 0) {
+			// if it's in the json folder, it surely is json!
+			return "application/json";
+		}
+	}
+
 	return mimeTypes[i].mimetype;
 }
 
@@ -508,6 +520,18 @@ static void ICACHE_FLASH_ATTR httpdProcessRequest(HttpdConnData *conn) {
 		error("WtF? url = NULL");
 		return; //Shouldn't happen
 	}
+
+	if (conn->requestType == HTTPD_METHOD_OPTIONS /*&& conn->priv->chunkHdr[0] != 0*/) {
+		// we have a CORS preflight
+		httpdStartResponse(conn, 200);
+		httpdHeader(conn, "Access-Control-Allow-Headers", conn->priv->corsToken);
+		httpdEndHeaders(conn);
+		httpdCgiIsDone(conn);
+
+		dbg("CORS preflight resp sent.");
+		return;
+	}
+
 	//See if we can find a CGI that's happy to handle the request.
 	while (1) {
 		//Look up URL in the built-in URL table.
@@ -647,7 +671,7 @@ static void ICACHE_FLASH_ATTR httpdParseHeader(char *h, HttpdConnData *conn) {
 //		int len = strlen(h);
 //		info("h = %s, len %d", h, len);
 
-		//strcpy(conn->priv->corsReqHdrs, h+32);//MAX_CORS_HDR_LEN
+		strncpy(conn->priv->corsToken, h+32, MAX_CORS_TOKEN_LEN);
 	}
 }
 
@@ -661,6 +685,7 @@ void httpdRecvCb(ConnTypePtr rconn, char *remIp, int remPort, char *data, unsign
 	if (conn==NULL) return;
 	conn->priv->sendBuff=sendBuff;
 	conn->priv->sendBuffLen=0;
+	conn->priv->corsToken[0] = 0;
 
 	//This is slightly evil/dirty: we abuse conn->post->len as a state variable for where in the http communications we are:
 	//<0 (-1): Post len unknown because we're still receiving headers

libesphttpd/html-minifier-conf.json

@@ -3,7 +3,7 @@
   "removeCommentsFromCDATA": true,
   "removeCDATASectionsFromCDATA": true,
   "collapseWhitespace": true,
-  "conservativeCollapse": false,
+  "conservativeCollapse": true,
   "collapseBooleanAttributes": true,
   "removeTagWhitespace": true,
   "removeAttributeQuotes": true,

web-gbuild.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+xterm -title "ESP gulp build" -e "source $HOME/.bashrc && cd html_src && gulp"

web-gwatch.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 
-xterm -title "ESP html build" -e "source $HOME/.bashrc && cd html_src && gulp watch"
+xterm -title "ESP gulp watch" -e "source $HOME/.bashrc && cd html_src && gulp watch"