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[radar] Handling of Point Label Color as Array #5153

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[radar] Handling of Point Label Color as Array #5153

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2150834
Input Point Label Font Color as array
JulianTrei Jan 16, 2018
386ab4d
code cleanup
JulianTrei Jan 16, 2018
be72a3c
Merge pull request #1 from JulianTrei/feature/colorPointLabels
JulianTrei Jan 16, 2018
b4d3bb1
using some helper functions
JulianTrei Jan 19, 2018
ef4442f
code cleanup
JulianTrei Jan 19, 2018
d0cb5f4
Merge pull request #2 from JulianTrei/feature/colorPointLabels
JulianTrei Jan 19, 2018
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42 changes: 37 additions & 5 deletions src/scales/scale.radialLinear.js
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Original file line number Diff line number Diff line change
Expand Up @@ -267,15 +267,47 @@ module.exports = function(Chart) {
var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5);

// Keep this in loop since we may support array properties here
var pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
ctx.font = plFont.font;
ctx.fillStyle = pointLabelFontColor;

var angleRadians = scale.getIndexAngle(i);
var angle = helpers.toDegrees(angleRadians);
ctx.textAlign = getTextAlignForAngle(angle);
adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);

// Point Label Color
var pointLabelFontColor = null;
if (pointLabelOpts.fontColor) {
// handle scale.pointLabels[i] as string or array combined with pointLabelFontColor as string or array or none given.
if (helpers.isArray(scale.pointLabels[i])) {
var yOffset = 0;
for (var x = 0; x < scale.pointLabels[i].length; x++) {
if (helpers.isArray(pointLabelOpts.fontColor)) {
pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor[x], globalDefaults.defaultFontColor);
} else {
pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
}
var pointLabelPositionNew = helpers.clone(pointLabelPosition);
pointLabelPositionNew.y += yOffset;
adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPositionNew);
ctx.fillStyle = pointLabelFontColor;
fillText(ctx, scale.pointLabels[i][x] || '', pointLabelPositionNew, plFont.size);
// Extra 3px for some label spacing
yOffset += plFont.size + 3;
}
} else {
if (helpers.isArray(pointLabelOpts.fontColor)) {
pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor[0], globalDefaults.defaultFontColor);
} else {
pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
}
adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
ctx.fillStyle = pointLabelFontColor;
fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
}
} else {
pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
ctx.fillStyle = pointLabelFontColor;
fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
}
}
}
}
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