#1290 Hide/style today marker in gantt diagram

cypress/integration/rendering/gantt.spec.js

@@ -1,7 +1,7 @@
 /* eslint-env jest */
 import { imgSnapshotTest } from '../../helpers/util.js';
 
-describe('Sequencediagram', () => {
+describe('Gantt diagram', () => {
   it('should render a gantt chart', () => {
     imgSnapshotTest(
       `
@@ -130,4 +130,34 @@ describe('Sequencediagram', () => {
       {}
     );
   });
+
+  it('should hide today marker', () => {
+    imgSnapshotTest(
+      `
+      gantt
+        title Hide today marker (vertical line should not be visible)
+        dateFormat YYYY-MM-DD
+        axisFormat %d
+        todayMarker off
+        section Section1
+         Today: 1, -1h
+      `,
+      {}
+    );
+  });
+
+  it('should style today marker', () => {
+    imgSnapshotTest(
+      `
+    gantt
+      title Style today marker (vertical line should be 5px wide and half-transparent blue)
+      dateFormat YYYY-MM-DD
+      axisFormat %d
+      todayMarker stroke-width:5px,stroke:#00f,opacity:0.5
+      section Section1
+       Today: 1, -1h
+      `,
+      {}
+    );
+  });
 });

dist/index.html

@@ -16,6 +16,9 @@
   <div class="mermaid">
     info
   </div>
+
+  <hr/>
+
   <div class="mermaid">
     gantt
       title Exclusive end dates (Manual date should end on 3d)
@@ -25,7 +28,6 @@
        2 Days: 1, 2019-01-01,2d
        Manual Date: 2, 2019-01-01,2019-01-03
   </div>
-
   <div class="mermaid">
     gantt
       title Inclusive end dates (Manual date should end on 4th)
@@ -36,6 +38,27 @@
        2 Days: 1, 2019-01-01,2d
        Manual Date: 2, 2019-01-01,2019-01-03
   </div>
+  <div class="mermaid">
+    gantt
+      title Hide today marker (vertical line should not be visible)
+      dateFormat YYYY-MM-DD
+      axisFormat %d
+      todayMarker off
+      section Section1
+       Today: 1, -1h
+  </div>
+  <div class="mermaid">
+    gantt
+      title Style today marker (vertical line should be 5px wide and half-transparent blue)
+      dateFormat YYYY-MM-DD
+      axisFormat %d
+      todayMarker stroke-width:5px,stroke:#00f,opacity:0.5
+      section Section1
+       Today: 1, -1h
+  </div>
+
+  <hr/>
+
   <div class="mermaid">
       graph LR
       sid-B3655226-6C29-4D00-B685-3D5C734DC7E1["

src/diagrams/gantt/ganttDb.js

@@ -6,6 +6,7 @@ import { getConfig } from '../../config';
 const config = getConfig();
 let dateFormat = '';
 let axisFormat = '';
+let todayMarker = '';
 let excludes = [];
 let title = '';
 let sections = [];
@@ -27,6 +28,7 @@ export const clear = function() {
   rawTasks = [];
   dateFormat = '';
   axisFormat = '';
+  todayMarker = '';
   excludes = [];
   inclusiveEndDates = false;
 };
@@ -39,6 +41,14 @@ export const getAxisFormat = function() {
   return axisFormat;
 };
 
+export const setTodayMarker = function(txt) {
+  todayMarker = txt;
+};
+
+export const getTodayMarker = function() {
+  return todayMarker;
+};
+
 export const setDateFormat = function(txt) {
   dateFormat = txt;
 };
@@ -572,6 +582,8 @@ export default {
   endDatesAreInclusive,
   setAxisFormat,
   getAxisFormat,
+  setTodayMarker,
+  getTodayMarker,
   setTitle,
   getTitle,
   addSection,

src/diagrams/gantt/ganttDb.spec.js

@@ -21,6 +21,7 @@ describe('when using the ganttDb', function() {
     beforeEach(function() {
       ganttDb.setDateFormat('YYYY-MM-DD');
       ganttDb.enableInclusiveEndDates();
+      ganttDb.setTodayMarker('off');
       ganttDb.setExcludes('weekends 2019-02-06,friday');
       ganttDb.addSection('weekends skip test');
       ganttDb.addTask('test1', 'id1,2019-02-01,1d');
@@ -34,6 +35,7 @@ describe('when using the ganttDb', function() {
       ${'getTitle'}             | ${''}
       ${'getDateFormat'}        | ${''}
       ${'getAxisFormat'}        | ${''}
+      ${'getTodayMarker'}       | ${''}
       ${'getExcludes'}          | ${[]}
       ${'getSections'}          | ${[]}
       ${'endDatesAreInclusive'} | ${false}
@@ -216,4 +218,13 @@ describe('when using the ganttDb', function() {
       expect(tasks[1].task).toEqual('test2');
     });
   });
+
+  it.each`
+    type       | expected
+    ${'hide'}  | ${'off'}
+    ${'style'} | ${'stoke:stroke-width:5px,stroke:#00f,opacity:0.5'}
+  `('should ${type} today marker', ({ expected }) => {
+    ganttDb.setTodayMarker(expected);
+    expect(ganttDb.getTodayMarker()).toEqual(expected);
+  });
 });

src/diagrams/gantt/ganttRenderer.js

@@ -396,17 +396,25 @@ export const draw = function(text, id) {
   }
 
   function drawToday(theSidePad, theTopPad, w, h) {
+    const todayMarker = ganttDb.getTodayMarker();
+    if (todayMarker === 'off') {
+      return;
+    }
+
     const todayG = svg.append('g').attr('class', 'today');
-
     const today = new Date();
+    const todayLine = todayG.append('line');
 
-    todayG
-      .append('line')
+    todayLine
       .attr('x1', timeScale(today) + theSidePad)
       .attr('x2', timeScale(today) + theSidePad)
       .attr('y1', conf.titleTopMargin)
       .attr('y2', h - conf.titleTopMargin)
       .attr('class', 'today');
+
+    if (todayMarker !== '') {
+      todayLine.attr('style', todayMarker.replace(/,/g, ';'));
+    }
   }
 
   // from this stackexchange question: http://stackoverflow.com/questions/1890203/unique-for-arrays-in-javascript

src/diagrams/gantt/parser/gantt.jison

@@ -55,13 +55,14 @@ that id.
 
 "gantt"                 return 'gantt';
 "dateFormat"\s[^#\n;]+  return 'dateFormat';
-"inclusiveEndDates"			return 'inclusiveEndDates';
+"inclusiveEndDates"     return 'inclusiveEndDates';
 "axisFormat"\s[^#\n;]+  return 'axisFormat';
 "excludes"\s[^#\n;]+    return 'excludes';
+"todayMarker"\s[^\n;]+  return 'todayMarker';
 \d\d\d\d"-"\d\d"-"\d\d  return 'date';
 "title"\s[^#\n;]+       return 'title';
 "section"\s[^#:\n;]+    return 'section';
-[^#:\n;]+             return 'taskTxt';
+[^#:\n;]+               return 'taskTxt';
 ":"[^#\n;]+             return 'taskData';
 ":"                     return ':';
 <<EOF>>                 return 'EOF';
@@ -93,9 +94,10 @@ line
 
 statement
   : dateFormat {yy.setDateFormat($1.substr(11));$$=$1.substr(11);}
-	| inclusiveEndDates {yy.enableInclusiveEndDates();$$=$1.substr(18);}
+  | inclusiveEndDates {yy.enableInclusiveEndDates();$$=$1.substr(18);}
   | axisFormat {yy.setAxisFormat($1.substr(11));$$=$1.substr(11);}
   | excludes {yy.setExcludes($1.substr(9));$$=$1.substr(9);}
+  | todayMarker {yy.setTodayMarker($1.substr(12));$$=$1.substr(12);}
   | title {yy.setTitle($1.substr(6));$$=$1.substr(6);}
   | section {yy.addSection($1.substr(8));$$=$1.substr(8);}
   | clickStatement

src/diagrams/gantt/parser/gantt.spec.js

@@ -37,6 +37,14 @@ describe('when parsing a gantt diagram it', function() {
 
     expect(parserFnConstructor(str)).not.toThrow();
   });
+  it('should handle a todayMarker definition', function() {
+    spyOn(ganttDb, 'setTodayMarker');
+    const str =
+      'gantt\ndateFormat yyyy-mm-dd\ntitle Adding gantt diagram functionality to mermaid\nexcludes weekdays 2019-02-01\ntodayMarker off';
+
+    expect(parserFnConstructor(str)).not.toThrow();
+    expect(ganttDb.setTodayMarker).toHaveBeenCalledWith('off');
+  });
   it('should handle a section definition', function() {
     const str =
       'gantt\n' +