mirror of https://github.com/masayuki0812/c3.git
Quite good looking graph derived from d3.js
http://c3js.org
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341 lines
14 KiB
341 lines
14 KiB
import CLASS from './class'; |
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import { c3_chart_internal_fn } from './core'; |
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import { isDefined, isEmpty, getOption } from './util'; |
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c3_chart_internal_fn.initLegend = function () { |
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var $$ = this; |
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$$.legendItemTextBox = {}; |
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$$.legendHasRendered = false; |
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$$.legend = $$.svg.append("g").attr("transform", $$.getTranslate('legend')); |
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if (!$$.config.legend_show) { |
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$$.legend.style('visibility', 'hidden'); |
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$$.hiddenLegendIds = $$.mapToIds($$.data.targets); |
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return; |
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} |
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// MEMO: call here to update legend box and tranlate for all |
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// MEMO: translate will be upated by this, so transform not needed in updateLegend() |
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$$.updateLegendWithDefaults(); |
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}; |
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c3_chart_internal_fn.updateLegendWithDefaults = function () { |
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var $$ = this; |
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$$.updateLegend($$.mapToIds($$.data.targets), {withTransform: false, withTransitionForTransform: false, withTransition: false}); |
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}; |
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c3_chart_internal_fn.updateSizeForLegend = function (legendHeight, legendWidth) { |
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var $$ = this, config = $$.config, insetLegendPosition = { |
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top: $$.isLegendTop ? $$.getCurrentPaddingTop() + config.legend_inset_y + 5.5 : $$.currentHeight - legendHeight - $$.getCurrentPaddingBottom() - config.legend_inset_y, |
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left: $$.isLegendLeft ? $$.getCurrentPaddingLeft() + config.legend_inset_x + 0.5 : $$.currentWidth - legendWidth - $$.getCurrentPaddingRight() - config.legend_inset_x + 0.5 |
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}; |
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$$.margin3 = { |
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top: $$.isLegendRight ? 0 : $$.isLegendInset ? insetLegendPosition.top : $$.currentHeight - legendHeight, |
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right: NaN, |
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bottom: 0, |
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left: $$.isLegendRight ? $$.currentWidth - legendWidth : $$.isLegendInset ? insetLegendPosition.left : 0 |
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}; |
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}; |
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c3_chart_internal_fn.transformLegend = function (withTransition) { |
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var $$ = this; |
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(withTransition ? $$.legend.transition() : $$.legend).attr("transform", $$.getTranslate('legend')); |
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}; |
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c3_chart_internal_fn.updateLegendStep = function (step) { |
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this.legendStep = step; |
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}; |
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c3_chart_internal_fn.updateLegendItemWidth = function (w) { |
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this.legendItemWidth = w; |
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}; |
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c3_chart_internal_fn.updateLegendItemHeight = function (h) { |
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this.legendItemHeight = h; |
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}; |
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c3_chart_internal_fn.getLegendWidth = function () { |
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var $$ = this; |
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return $$.config.legend_show ? $$.isLegendRight || $$.isLegendInset ? $$.legendItemWidth * ($$.legendStep + 1) : $$.currentWidth : 0; |
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}; |
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c3_chart_internal_fn.getLegendHeight = function () { |
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var $$ = this, h = 0; |
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if ($$.config.legend_show) { |
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if ($$.isLegendRight) { |
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h = $$.currentHeight; |
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} else { |
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h = Math.max(20, $$.legendItemHeight) * ($$.legendStep + 1); |
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} |
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} |
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return h; |
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}; |
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c3_chart_internal_fn.opacityForLegend = function (legendItem) { |
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return legendItem.classed(CLASS.legendItemHidden) ? null : 1; |
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}; |
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c3_chart_internal_fn.opacityForUnfocusedLegend = function (legendItem) { |
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return legendItem.classed(CLASS.legendItemHidden) ? null : 0.3; |
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}; |
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c3_chart_internal_fn.toggleFocusLegend = function (targetIds, focus) { |
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var $$ = this; |
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targetIds = $$.mapToTargetIds(targetIds); |
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$$.legend.selectAll('.' + CLASS.legendItem) |
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.filter(function (id) { return targetIds.indexOf(id) >= 0; }) |
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.classed(CLASS.legendItemFocused, focus) |
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.transition().duration(100) |
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.style('opacity', function () { |
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var opacity = focus ? $$.opacityForLegend : $$.opacityForUnfocusedLegend; |
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return opacity.call($$, $$.d3.select(this)); |
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}); |
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}; |
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c3_chart_internal_fn.revertLegend = function () { |
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var $$ = this, d3 = $$.d3; |
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$$.legend.selectAll('.' + CLASS.legendItem) |
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.classed(CLASS.legendItemFocused, false) |
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.transition().duration(100) |
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.style('opacity', function () { return $$.opacityForLegend(d3.select(this)); }); |
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}; |
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c3_chart_internal_fn.showLegend = function (targetIds) { |
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var $$ = this, config = $$.config; |
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if (!config.legend_show) { |
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config.legend_show = true; |
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$$.legend.style('visibility', 'visible'); |
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if (!$$.legendHasRendered) { |
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$$.updateLegendWithDefaults(); |
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} |
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} |
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$$.removeHiddenLegendIds(targetIds); |
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$$.legend.selectAll($$.selectorLegends(targetIds)) |
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.style('visibility', 'visible') |
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.transition() |
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.style('opacity', function () { return $$.opacityForLegend($$.d3.select(this)); }); |
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}; |
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c3_chart_internal_fn.hideLegend = function (targetIds) { |
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var $$ = this, config = $$.config; |
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if (config.legend_show && isEmpty(targetIds)) { |
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config.legend_show = false; |
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$$.legend.style('visibility', 'hidden'); |
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} |
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$$.addHiddenLegendIds(targetIds); |
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$$.legend.selectAll($$.selectorLegends(targetIds)) |
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.style('opacity', 0) |
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.style('visibility', 'hidden'); |
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}; |
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c3_chart_internal_fn.clearLegendItemTextBoxCache = function () { |
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this.legendItemTextBox = {}; |
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}; |
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c3_chart_internal_fn.updateLegend = function (targetIds, options, transitions) { |
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var $$ = this, config = $$.config; |
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var xForLegend, xForLegendText, xForLegendRect, yForLegend, yForLegendText, yForLegendRect, x1ForLegendTile, x2ForLegendTile, yForLegendTile; |
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var paddingTop = 4, paddingRight = 10, maxWidth = 0, maxHeight = 0, posMin = 10, tileWidth = config.legend_item_tile_width + 5; |
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var l, totalLength = 0, offsets = {}, widths = {}, heights = {}, margins = [0], steps = {}, step = 0; |
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var withTransition, withTransitionForTransform; |
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var texts, rects, tiles, background; |
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// Skip elements when their name is set to null |
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targetIds = targetIds.filter(function(id) { |
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return !isDefined(config.data_names[id]) || config.data_names[id] !== null; |
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}); |
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options = options || {}; |
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withTransition = getOption(options, "withTransition", true); |
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withTransitionForTransform = getOption(options, "withTransitionForTransform", true); |
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function getTextBox(textElement, id) { |
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if (!$$.legendItemTextBox[id]) { |
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$$.legendItemTextBox[id] = $$.getTextRect(textElement.textContent, CLASS.legendItem, textElement); |
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} |
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return $$.legendItemTextBox[id]; |
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} |
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function updatePositions(textElement, id, index) { |
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var reset = index === 0, isLast = index === targetIds.length - 1, |
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box = getTextBox(textElement, id), |
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itemWidth = box.width + tileWidth + (isLast && !($$.isLegendRight || $$.isLegendInset) ? 0 : paddingRight) + config.legend_padding, |
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itemHeight = box.height + paddingTop, |
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itemLength = $$.isLegendRight || $$.isLegendInset ? itemHeight : itemWidth, |
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areaLength = $$.isLegendRight || $$.isLegendInset ? $$.getLegendHeight() : $$.getLegendWidth(), |
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margin, maxLength; |
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// MEMO: care about condifion of step, totalLength |
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function updateValues(id, withoutStep) { |
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if (!withoutStep) { |
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margin = (areaLength - totalLength - itemLength) / 2; |
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if (margin < posMin) { |
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margin = (areaLength - itemLength) / 2; |
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totalLength = 0; |
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step++; |
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} |
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} |
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steps[id] = step; |
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margins[step] = $$.isLegendInset ? 10 : margin; |
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offsets[id] = totalLength; |
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totalLength += itemLength; |
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} |
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if (reset) { |
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totalLength = 0; |
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step = 0; |
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maxWidth = 0; |
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maxHeight = 0; |
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} |
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if (config.legend_show && !$$.isLegendToShow(id)) { |
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widths[id] = heights[id] = steps[id] = offsets[id] = 0; |
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return; |
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} |
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widths[id] = itemWidth; |
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heights[id] = itemHeight; |
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if (!maxWidth || itemWidth >= maxWidth) { maxWidth = itemWidth; } |
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if (!maxHeight || itemHeight >= maxHeight) { maxHeight = itemHeight; } |
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maxLength = $$.isLegendRight || $$.isLegendInset ? maxHeight : maxWidth; |
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if (config.legend_equally) { |
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Object.keys(widths).forEach(function (id) { widths[id] = maxWidth; }); |
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Object.keys(heights).forEach(function (id) { heights[id] = maxHeight; }); |
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margin = (areaLength - maxLength * targetIds.length) / 2; |
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if (margin < posMin) { |
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totalLength = 0; |
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step = 0; |
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targetIds.forEach(function (id) { updateValues(id); }); |
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} |
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else { |
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updateValues(id, true); |
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} |
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} else { |
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updateValues(id); |
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} |
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} |
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if ($$.isLegendInset) { |
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step = config.legend_inset_step ? config.legend_inset_step : targetIds.length; |
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$$.updateLegendStep(step); |
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} |
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if ($$.isLegendRight) { |
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xForLegend = function (id) { return maxWidth * steps[id]; }; |
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yForLegend = function (id) { return margins[steps[id]] + offsets[id]; }; |
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} else if ($$.isLegendInset) { |
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xForLegend = function (id) { return maxWidth * steps[id] + 10; }; |
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yForLegend = function (id) { return margins[steps[id]] + offsets[id]; }; |
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} else { |
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xForLegend = function (id) { return margins[steps[id]] + offsets[id]; }; |
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yForLegend = function (id) { return maxHeight * steps[id]; }; |
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} |
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xForLegendText = function (id, i) { return xForLegend(id, i) + 4 + config.legend_item_tile_width; }; |
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yForLegendText = function (id, i) { return yForLegend(id, i) + 9; }; |
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xForLegendRect = function (id, i) { return xForLegend(id, i); }; |
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yForLegendRect = function (id, i) { return yForLegend(id, i) - 5; }; |
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x1ForLegendTile = function (id, i) { return xForLegend(id, i) - 2; }; |
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x2ForLegendTile = function (id, i) { return xForLegend(id, i) - 2 + config.legend_item_tile_width; }; |
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yForLegendTile = function (id, i) { return yForLegend(id, i) + 4; }; |
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// Define g for legend area |
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l = $$.legend.selectAll('.' + CLASS.legendItem) |
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.data(targetIds) |
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.enter().append('g') |
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.attr('class', function (id) { return $$.generateClass(CLASS.legendItem, id); }) |
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.style('visibility', function (id) { return $$.isLegendToShow(id) ? 'visible' : 'hidden'; }) |
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.style('cursor', 'pointer') |
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.on('click', function (id) { |
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if (config.legend_item_onclick) { |
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config.legend_item_onclick.call($$, id); |
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} else { |
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if ($$.d3.event.altKey) { |
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$$.api.hide(); |
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$$.api.show(id); |
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} else { |
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$$.api.toggle(id); |
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$$.isTargetToShow(id) ? $$.api.focus(id) : $$.api.revert(); |
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} |
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} |
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}) |
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.on('mouseover', function (id) { |
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if (config.legend_item_onmouseover) { |
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config.legend_item_onmouseover.call($$, id); |
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} |
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else { |
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$$.d3.select(this).classed(CLASS.legendItemFocused, true); |
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if (!$$.transiting && $$.isTargetToShow(id)) { |
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$$.api.focus(id); |
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} |
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} |
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}) |
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.on('mouseout', function (id) { |
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if (config.legend_item_onmouseout) { |
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config.legend_item_onmouseout.call($$, id); |
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} |
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else { |
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$$.d3.select(this).classed(CLASS.legendItemFocused, false); |
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$$.api.revert(); |
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} |
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}); |
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l.append('text') |
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.text(function (id) { return isDefined(config.data_names[id]) ? config.data_names[id] : id; }) |
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.each(function (id, i) { updatePositions(this, id, i); }) |
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.style("pointer-events", "none") |
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.attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendText : -200) |
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.attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendText); |
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l.append('rect') |
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.attr("class", CLASS.legendItemEvent) |
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.style('fill-opacity', 0) |
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.attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendRect : -200) |
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.attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendRect); |
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l.append('line') |
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.attr('class', CLASS.legendItemTile) |
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.style('stroke', $$.color) |
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.style("pointer-events", "none") |
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.attr('x1', $$.isLegendRight || $$.isLegendInset ? x1ForLegendTile : -200) |
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.attr('y1', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendTile) |
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.attr('x2', $$.isLegendRight || $$.isLegendInset ? x2ForLegendTile : -200) |
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.attr('y2', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendTile) |
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.attr('stroke-width', config.legend_item_tile_height); |
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// Set background for inset legend |
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background = $$.legend.select('.' + CLASS.legendBackground + ' rect'); |
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if ($$.isLegendInset && maxWidth > 0 && background.size() === 0) { |
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background = $$.legend.insert('g', '.' + CLASS.legendItem) |
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.attr("class", CLASS.legendBackground) |
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.append('rect'); |
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} |
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texts = $$.legend.selectAll('text') |
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.data(targetIds) |
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.text(function (id) { return isDefined(config.data_names[id]) ? config.data_names[id] : id; }) // MEMO: needed for update |
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.each(function (id, i) { updatePositions(this, id, i); }); |
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(withTransition ? texts.transition() : texts) |
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.attr('x', xForLegendText) |
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.attr('y', yForLegendText); |
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rects = $$.legend.selectAll('rect.' + CLASS.legendItemEvent) |
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.data(targetIds); |
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(withTransition ? rects.transition() : rects) |
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.attr('width', function (id) { return widths[id]; }) |
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.attr('height', function (id) { return heights[id]; }) |
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.attr('x', xForLegendRect) |
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.attr('y', yForLegendRect); |
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tiles = $$.legend.selectAll('line.' + CLASS.legendItemTile) |
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.data(targetIds); |
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(withTransition ? tiles.transition() : tiles) |
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.style('stroke', $$.color) |
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.attr('x1', x1ForLegendTile) |
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.attr('y1', yForLegendTile) |
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.attr('x2', x2ForLegendTile) |
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.attr('y2', yForLegendTile); |
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if (background) { |
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(withTransition ? background.transition() : background) |
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.attr('height', $$.getLegendHeight() - 12) |
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.attr('width', maxWidth * (step + 1) + 10); |
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} |
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// toggle legend state |
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$$.legend.selectAll('.' + CLASS.legendItem) |
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.classed(CLASS.legendItemHidden, function (id) { return !$$.isTargetToShow(id); }); |
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// Update all to reflect change of legend |
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$$.updateLegendItemWidth(maxWidth); |
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$$.updateLegendItemHeight(maxHeight); |
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$$.updateLegendStep(step); |
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// Update size and scale |
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$$.updateSizes(); |
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$$.updateScales(); |
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$$.updateSvgSize(); |
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// Update g positions |
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$$.transformAll(withTransitionForTransform, transitions); |
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$$.legendHasRendered = true; |
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};
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