@devexperts/dxcharts-lite
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JavaScript
/*
* Copyright (C) 2019 - 2026 Devexperts Solutions IE Limited
* This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
* If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { getLabelTextColorByBackgroundColor } from '../../utils/canvas/canvas-text-functions.utils';
export const DEFAULT_LABEL_COLOR = '#FF00FF';
export function getPlainLabelTextColor(colorsConfig, textColor, invertedTextColor, yAxisState) {
// `plain` label is transparent, so to calculate text color
// we need to go down to draw hierarchy
// the next is YAxis bg color
const yAxisBGColor = colorsConfig.yAxis.backgroundColor;
// if yAxis bg color is transparent, then we need to check chart area background color
const plainChartBGColor = colorsConfig.chartAreaTheme.backgroundColor;
// when chart area bg color is gradient, then we need to check which side yAxis is drawn
// because color on the right side and left side is different
const leftChartBGColor = colorsConfig.chartAreaTheme.backgroundGradientTopColor;
const rightChartBGColor = colorsConfig.chartAreaTheme.backgroundGradientBottomColor;
const gradientChartBGColor = yAxisState.align === 'left' ? leftChartBGColor : rightChartBGColor;
const chartBGColor = colorsConfig.chartAreaTheme.backgroundMode === 'gradient' ? gradientChartBGColor : plainChartBGColor;
const bgColor = yAxisBGColor === 'transparent' ? chartBGColor : yAxisBGColor;
return getLabelTextColorByBackgroundColor(bgColor, textColor, invertedTextColor);
}
export const getPrimaryLabelTextColor = (lastPriceMovement, colors) => {
if (lastPriceMovement === 'down') {
return colors.lastPrice.textNegative;
}
else if (lastPriceMovement === 'up') {
return colors.lastPrice.textPositive;
}
else if (lastPriceMovement === 'none') {
return colors.lastPrice.textSelected;
}
else {
return colors.lastPrice.textSelected;
}
};
export const resolveColorForBar = (priceMovement, colors) => {
const resolvedColor = colors.barTheme[`${priceMovement}Color`];
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForLine = (priceMovement, colors) => {
const resolvedColor = colors.lineTheme[`${priceMovement}Color`];
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForCandle = (priceMovement, colors) => {
const resolvedColor = colors.candleTheme[`${priceMovement}Color`];
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForArea = (priceMovement, colors) => {
const resolvedColor = colors.areaTheme.lineColor;
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForScatterPlot = (priceMovement, colors) => {
const resolvedColor = colors.scatterPlot.mainColor;
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForHistogram = (priceMovement, colors) => {
const resolvedColor = colors.histogram[`${priceMovement}Bright`];
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForBaseLine = (priceMovement, colors) => {
const resolvedColor = priceMovement === 'up'
? colors.baseLineTheme.upperSectionStrokeColor
: colors.baseLineTheme.lowerSectionStrokeColor;
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveColorForTrendAndHollow = (priceMovement, colors) => {
const resolvedColor = colors.candleTheme[`${priceMovement}WickColor`];
return resolvedColor !== null && resolvedColor !== void 0 ? resolvedColor : DEFAULT_LABEL_COLOR;
};
export const resolveDefaultColorForLabel = () => {
console.warn('Fallback for label default color');
return DEFAULT_LABEL_COLOR;
};