@neo4j-ndl/react-charts
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React implementation of charts from Neo4j Design System
59 lines • 2.48 kB
JavaScript
/**
*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
export const COLLAPSED_LEGEND_ROWS = 2;
export const COLLAPSED_LEGEND_MAX_HEIGHT = 64;
/**
* Get the computed element width, including both paddings and margins
*/
export const getComputedElementWidth = (element) => {
const elementRect = element.getBoundingClientRect();
const elementComputedStyle = window.getComputedStyle(element);
const elementMarginLeft = parseFloat(elementComputedStyle.marginLeft);
const elementMarginRight = parseFloat(elementComputedStyle.marginRight);
return elementRect.width + elementMarginLeft + elementMarginRight;
};
export const getItemCountThatFitsRow = (itemWidths, availableWidth, { keepOversizedFirstItem = true } = {}) => {
let rowWidth = 0;
let count = 0;
for (const itemWidth of itemWidths) {
if (count === 0 && itemWidth > availableWidth) {
return keepOversizedFirstItem ? 1 : 0;
}
if (rowWidth + itemWidth > availableWidth) {
return count;
}
rowWidth += itemWidth;
count += 1;
}
return count;
};
/**
* Calculates how many legend items fit in the two-row collapsed layout.
*
* The second row reserves space for the "View more" action so that control
* remains visible at the end of the collapsed legend.
*/
export const getCollapsedVisibleItemCount = (itemWidths, availableRowWidth, viewMoreButtonWidth) => {
const firstRowItemCount = getItemCountThatFitsRow(itemWidths, availableRowWidth);
const secondRowItemCount = getItemCountThatFitsRow(itemWidths.slice(firstRowItemCount), availableRowWidth - viewMoreButtonWidth, { keepOversizedFirstItem: false });
return firstRowItemCount + secondRowItemCount;
};
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