fix edits for datestring referenced annotations

Author: etpinard

src/components/annotations/draw.js

@@ -636,8 +636,10 @@ function drawRaw(gd, options, index, subplotId, xa, ya) {
                         drawArrow(dx, dy);
                     }
                     else if(!subplotId) {
-                        if(xa) update[annbase + '.x'] = options.x + dx / xa._m;
-                        else {
+                        if(xa) {
+                            update[annbase + '.x'] = xa.p2r(xa.r2p(options.x) + dx);
+
+                        } else {
                             var widthFraction = options._xsize / gs.w,
                                 xLeft = options.x + (options._xshift - options.xshift) / gs.w -
                                     widthFraction / 2;
@@ -646,8 +648,9 @@ function drawRaw(gd, options, index, subplotId, xa, ya) {
                                 widthFraction, 0, 1, options.xanchor);
                         }
 
-                        if(ya) update[annbase + '.y'] = options.y + dy / ya._m;
-                        else {
+                        if(ya) {
+                            update[annbase + '.y'] = ya.p2r(ya.r2p(options.y) + dy);
+                        } else {
                             var heightFraction = options._ysize / gs.h,
                                 yBottom = options.y - (options._yshift + options.yshift) / gs.h -
                                     heightFraction / 2;

test/jasmine/tests/annotations_test.js

@@ -1151,6 +1151,69 @@ describe('annotation effects', function() {
         .then(done);
     });
 
+    it('works date string data-referenced with no arrow', function(done) {
+        gd = createGraphDiv();
+
+        Plotly.newPlot(gd, [{
+            x: ['2018-01-01', '2018-02-02'],
+            y: ['2017-01-03', '2017-02-04'],
+        }], {
+            annotations: [{
+                showarrow: false,
+                text: 'YO!',
+                xref: 'x',
+                yref: 'y',
+                x: '2018-02-01',
+                y: '2017-02-05'
+            }],
+            width: 500,
+            height: 500,
+            margin: {l: 100, r: 100, t: 100, b: 100, pad: 0},
+        }, {
+            editable: true
+        })
+        .then(function() {
+            return dragAndReplot(textDrag(), -20, 20);
+        })
+        .then(function() {
+            expect(gd._fullLayout.annotations[0].x).toBe('2018-01-29 13:29:41.4857');
+            expect(gd._fullLayout.annotations[0].y).toBe('2017-02-02 13:28:35.6572');
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('works date sting data-referenced with arrow', function(done) {
+        gd = createGraphDiv();
+
+        Plotly.newPlot(gd, [{
+            x: ['2018-01-01', '2018-02-02'],
+            y: ['2017-01-03', '2017-02-04'],
+        }], {
+            annotations: [{
+                text: 'YO!',
+                xref: 'x',
+                yref: 'y',
+                x: '2018-02-01',
+                y: '2017-02-05'
+            }],
+            width: 500,
+            height: 500,
+            margin: {l: 100, r: 100, t: 100, b: 100, pad: 0},
+        }, {
+            editable: true
+        })
+        .then(function() {
+            return dragAndReplot(arrowDrag(), -20, 20);
+        })
+        .then(function() {
+            expect(gd._fullLayout.annotations[0].x).toBe('2018-01-29 13:29:41.4857');
+            expect(gd._fullLayout.annotations[0].y).toBe('2017-02-02 06:36:46.8112');
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
     it('should only make the clippaths it needs and delete others', function(done) {
         makePlot([
             {x: 50, y: 50, text: 'hi', width: 50, ax: 0, ay: -20},