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File: vendors/gentelella/vendors/echarts/src/layout/barGrid.js

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File: vendors/gentelella/vendors/echarts/src/layout/barGrid.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Gentelella BladeOne
Render templates using Bootstrap for presentation
Author: By
Last change:
Date: 3 years ago
Size: 7,944 bytes
 

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define(function(require) { 'use strict'; var zrUtil = require('zrender/core/util'); var numberUtil = require('../util/number'); var parsePercent = numberUtil.parsePercent; function getSeriesStackId(seriesModel) { return seriesModel.get('stack') || '__ec_stack_' + seriesModel.seriesIndex; } function calBarWidthAndOffset(barSeries, api) { // Columns info on each category axis. Key is cartesian name var columnsMap = {}; zrUtil.each(barSeries, function (seriesModel, idx) { var cartesian = seriesModel.coordinateSystem; var baseAxis = cartesian.getBaseAxis(); var columnsOnAxis = columnsMap[baseAxis.index] || { remainedWidth: baseAxis.getBandWidth(), autoWidthCount: 0, categoryGap: '20%', gap: '30%', axis: baseAxis, stacks: {} }; var stacks = columnsOnAxis.stacks; columnsMap[baseAxis.index] = columnsOnAxis; var stackId = getSeriesStackId(seriesModel); if (!stacks[stackId]) { columnsOnAxis.autoWidthCount++; } stacks[stackId] = stacks[stackId] || { width: 0, maxWidth: 0 }; var barWidth = seriesModel.get('barWidth'); var barMaxWidth = seriesModel.get('barMaxWidth'); var barGap = seriesModel.get('barGap'); var barCategoryGap = seriesModel.get('barCategoryGap'); // TODO if (barWidth && ! stacks[stackId].width) { barWidth = Math.min(columnsOnAxis.remainedWidth, barWidth); stacks[stackId].width = barWidth; columnsOnAxis.remainedWidth -= barWidth; } barMaxWidth && (stacks[stackId].maxWidth = barMaxWidth); (barGap != null) && (columnsOnAxis.gap = barGap); (barCategoryGap != null) && (columnsOnAxis.categoryGap = barCategoryGap); }); var result = {}; zrUtil.each(columnsMap, function (columnsOnAxis, coordSysName) { result[coordSysName] = {}; var stacks = columnsOnAxis.stacks; var baseAxis = columnsOnAxis.axis; var bandWidth = baseAxis.getBandWidth(); var categoryGap = parsePercent(columnsOnAxis.categoryGap, bandWidth); var barGapPercent = parsePercent(columnsOnAxis.gap, 1); var remainedWidth = columnsOnAxis.remainedWidth; var autoWidthCount = columnsOnAxis.autoWidthCount; var autoWidth = (remainedWidth - categoryGap) / (autoWidthCount + (autoWidthCount - 1) * barGapPercent); autoWidth = Math.max(autoWidth, 0); // Find if any auto calculated bar exceeded maxBarWidth zrUtil.each(stacks, function (column, stack) { var maxWidth = column.maxWidth; if (!column.width && maxWidth && maxWidth < autoWidth) { maxWidth = Math.min(maxWidth, remainedWidth); remainedWidth -= maxWidth; column.width = maxWidth; autoWidthCount--; } }); // Recalculate width again autoWidth = (remainedWidth - categoryGap) / (autoWidthCount + (autoWidthCount - 1) * barGapPercent); autoWidth = Math.max(autoWidth, 0); var widthSum = 0; var lastColumn; zrUtil.each(stacks, function (column, idx) { if (!column.width) { column.width = autoWidth; } lastColumn = column; widthSum += column.width * (1 + barGapPercent); }); if (lastColumn) { widthSum -= lastColumn.width * barGapPercent; } var offset = -widthSum / 2; zrUtil.each(stacks, function (column, stackId) { result[coordSysName][stackId] = result[coordSysName][stackId] || { offset: offset, width: column.width }; offset += column.width * (1 + barGapPercent); }); }); return result; } /** * @param {string} seriesType * @param {module:echarts/model/Global} ecModel * @param {module:echarts/ExtensionAPI} api */ function barLayoutGrid(seriesType, ecModel, api) { var barWidthAndOffset = calBarWidthAndOffset( zrUtil.filter( ecModel.getSeriesByType(seriesType), function (seriesModel) { return !ecModel.isSeriesFiltered(seriesModel) && seriesModel.coordinateSystem && seriesModel.coordinateSystem.type === 'cartesian2d'; } ) ); var lastStackCoords = {}; ecModel.eachSeriesByType(seriesType, function (seriesModel) { var data = seriesModel.getData(); var cartesian = seriesModel.coordinateSystem; var baseAxis = cartesian.getBaseAxis(); var stackId = getSeriesStackId(seriesModel); var columnLayoutInfo = barWidthAndOffset[baseAxis.index][stackId]; var columnOffset = columnLayoutInfo.offset; var columnWidth = columnLayoutInfo.width; var valueAxis = cartesian.getOtherAxis(baseAxis); var barMinHeight = seriesModel.get('barMinHeight') || 0; var valueAxisStart = baseAxis.onZero ? valueAxis.toGlobalCoord(valueAxis.dataToCoord(0)) : valueAxis.getGlobalExtent()[0]; var coords = cartesian.dataToPoints(data, true); lastStackCoords[stackId] = lastStackCoords[stackId] || []; data.setLayout({ offset: columnOffset, size: columnWidth }); data.each(valueAxis.dim, function (value, idx) { // ??? if (isNaN(value)) { return; } if (!lastStackCoords[stackId][idx]) { lastStackCoords[stackId][idx] = { // Positive stack p: valueAxisStart, // Negative stack n: valueAxisStart }; } var sign = value >= 0 ? 'p' : 'n'; var coord = coords[idx]; var lastCoord = lastStackCoords[stackId][idx][sign]; var x, y, width, height; if (valueAxis.isHorizontal()) { x = lastCoord; y = coord[1] + columnOffset; width = coord[0] - lastCoord; height = columnWidth; if (Math.abs(width) < barMinHeight) { width = (width < 0 ? -1 : 1) * barMinHeight; } lastStackCoords[stackId][idx][sign] += width; } else { x = coord[0] + columnOffset; y = lastCoord; width = columnWidth; height = coord[1] - lastCoord; if (Math.abs(height) < barMinHeight) { // Include zero to has a positive bar height = (height <= 0 ? -1 : 1) * barMinHeight; } lastStackCoords[stackId][idx][sign] += height; } data.setItemLayout(idx, { x: x, y: y, width: width, height: height }); }, true); }, this); } return barLayoutGrid; });