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Format numbers in waterfall hover #3711

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Merged
merged 2 commits into from
Apr 2, 2019
Merged

Format numbers in waterfall hover #3711

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ebec807
fix3710 - format waterfall values and sums in hover
archmoj Apr 2, 2019
07b6c9c
apply hoverLabelText in waterfall hover
archmoj Apr 2, 2019
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12 changes: 8 additions & 4 deletions src/traces/waterfall/hover.js
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,10 @@ var DIRSYMBOL = {
decreasing: '▼'
};

function formatNumber(a) {
return parseFloat(a.toPrecision(10));
}

module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
var point = hoverOnBars(pointData, xval, yval, hovermode);
if(!point) return;
Expand All @@ -34,16 +38,16 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
if(!di.isSum) {
// format delta numbers:
if(size > 0) {
point.extraText = size + ' ' + DIRSYMBOL.increasing;
point.extraText = formatNumber(size) + ' ' + DIRSYMBOL.increasing;
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Use Axes.hoverLabelText, it's made specifically for this purpose:

plotly.js/src/traces/box/hover.js

Line 170 in c657348

pointData2[vLetter + 'Label'] = (t.labels ? t.labels[attr] + ' ' : '') + Axes.hoverLabelText(vAxis, val);

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Thanks for the review @alexcjohnson.
Revised in 07b6c9c.

} else if(size < 0) {
point.extraText = '(' + (-size) + ') ' + DIRSYMBOL.decreasing;
point.extraText = '(' + (formatNumber(-size)) + ') ' + DIRSYMBOL.decreasing;
} else {
return;
}
// display initial value
point.extraText += '<br>Initial: ' + (di.b + di.s - size);
point.extraText += '<br>Initial: ' + formatNumber(di.b + di.s - size);
} else {
point[sizeLetter + 'LabelVal'] = size;
point[sizeLetter + 'LabelVal'] = formatNumber(size);
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not quite sure where this would break down, but in principle *LabelVal should be a number, and *Label should be the string you want to use to display that number.

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Perhaps non-default separators, or tickprefix/suffix, would break this as is

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In bar traces we use a similar pattern:

plotly.js/src/traces/bar/hover.js

Line 138 in 07b6c9c

pointData[sizeLetter + 'LabelVal'] = size;
.
Do you think there would be a problem there?

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Bar uses *LabelVal correctly, it's a number. I'm guessing that if there's no *Label then later on *LabelVal gets converted to a string using hoverLabelText but I don't know. If so, perhaps you can just leave this one as a number too.

Whew, the hover system is certainly ripe for refactoring... or at least documenting.

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Whew, the hover system is certainly ripe for refactoring... or at least documenting.

🙏

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Bar uses *LabelVal correctly, it's a number. I'm guessing that if there's no *Label then later on *LabelVal gets converted to a string using hoverLabelText but I don't know. If so, perhaps you can just leave this one as a number too.

OK. Let's keep this as it is in this PR.

}

point.color = getTraceColor(trace, di);
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28 changes: 28 additions & 0 deletions test/jasmine/tests/waterfall_test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1289,6 +1289,34 @@ describe('waterfall hover', function() {
.catch(failTest)
.then(done);
});

describe('round hover precision', function() {
it('should format numbers', function(done) {
gd = createGraphDiv();

Plotly.plot(gd, {
data: [{
x: [1, 2, 3, 4, 5],
y: [0, -1.1, 2.2, -3.3, 4.4],
type: 'waterfall'
}],
layout: {width: 400, height: 400}
})
.then(function() {
var evt = { xpx: 200, ypx: 350 };
Fx.hover('graph', evt, 'xy');
})
.then(function() {
assertHoverLabelContent({
nums: '2.2\n4.4 ▲\nInitial: -2.2',
name: '',
axis: '5'
});
})
.catch(failTest)
.then(done);
});
});
});

describe('with special width/offset combinations', function() {
Expand Down