Added text labels instead of just numeric labels

[Dougie777]

I dont have time to fork this so I will just post the fixed code here and a link to a working jsfiddle. UPDATE. I added the ability to put "bold" in the font string.

Working JS Fiddle: https://jsfiddle.net/L2v5rh8k/ New version with bold font support https://jsfiddle.net/7ntgfLo3/3/

Sorry guys I am in a hurry so I just plunked the compiled javascript into the jsfiddle. But I would rather share than not.

Update this function as below in the coffee script:

renderStaticLabels: (staticLabels, w, h, radius) ->
	@ctx.save()
	@ctx.translate(w, h)

	# Scale font size the hard way - assuming size comes first.
	setFont = (font) =>
		isBold = /bold/i.test(font)
		re = /\d+\.?\d?/
		match = font.match(re)[0]
		rest = font.slice(match.length).replace(/bold/i, '').trim() # Remove 'bold' from the rest
		fontsize = parseFloat(match) * @displayScale
		if isBold
			@ctx.font = "bold " + fontsize + rest
		else
			@ctx.font = fontsize + rest

	font = staticLabels.font or "10px Times"
	setFont(font)
	@ctx.fillStyle = staticLabels.color || "#000000"

	@ctx.textBaseline = "bottom"
	@ctx.textAlign = "center"
	for value in staticLabels.labels
		# Determine if the label is an object with 'label' and 'text' properties or a direct numerical value
		if (value.label == undefined)
			# Draw labels depending on limitMin/Max
			if (not @options.limitMin or value >= @minValue) and (not @options.limitMax or value <= @maxValue)
				rotationAngle = @getAngle(value) - 3 * Math.PI / 2
				@ctx.rotate(rotationAngle)
				@ctx.fillText(formatNumber(value, staticLabels.fractionDigits), 0, -radius - @lineWidth / 2)
				@ctx.rotate(-rotationAngle)
		else
			if typeof value == 'object'
				displayValue = value.label
				displayText = value.text || value.label.toString()
				font = value.font || staticLabels.font
			else
				displayValue = value
				displayText = value.toString()
				font = staticLabels.font

			# Set font with potential bold option
			setFont(font)

			# Draw labels depending on limitMin/Max
			if (not @options.limitMin or displayValue >= @minValue) and (not @options.limitMax or displayValue <= @maxValue)
				rotationAngle = @getAngle(displayValue) - 3 * Math.PI / 2
				@ctx.rotate(rotationAngle)
				@ctx.fillText(formatNumber(displayText, staticLabels.fractionDigits), 0, -radius - @lineWidth / 2)
				@ctx.rotate(-rotationAngle)

	@ctx.restore()