lepu-test-platform-web/node_modules/echarts/lib/chart/helper/SymbolDraw.js

224 lines
6.5 KiB
JavaScript

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var graphic = require("../../util/graphic");
var SymbolClz = require("./Symbol");
var _util = require("zrender/lib/core/util");
var isObject = _util.isObject;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* @module echarts/chart/helper/SymbolDraw
*/
/**
* @constructor
* @alias module:echarts/chart/helper/SymbolDraw
* @param {module:zrender/graphic/Group} [symbolCtor]
*/
function SymbolDraw(symbolCtor) {
this.group = new graphic.Group();
this._symbolCtor = symbolCtor || SymbolClz;
}
var symbolDrawProto = SymbolDraw.prototype;
function symbolNeedsDraw(data, point, idx, opt) {
return point && !isNaN(point[0]) && !isNaN(point[1]) && !(opt.isIgnore && opt.isIgnore(idx)) // We do not set clipShape on group, because it will cut part of
// the symbol element shape. We use the same clip shape here as
// the line clip.
&& !(opt.clipShape && !opt.clipShape.contain(point[0], point[1])) && data.getItemVisual(idx, 'symbol') !== 'none';
}
/**
* Update symbols draw by new data
* @param {module:echarts/data/List} data
* @param {Object} [opt] Or isIgnore
* @param {Function} [opt.isIgnore]
* @param {Object} [opt.clipShape]
*/
symbolDrawProto.updateData = function (data, opt) {
opt = normalizeUpdateOpt(opt);
var group = this.group;
var seriesModel = data.hostModel;
var oldData = this._data;
var SymbolCtor = this._symbolCtor;
var seriesScope = makeSeriesScope(data); // There is no oldLineData only when first rendering or switching from
// stream mode to normal mode, where previous elements should be removed.
if (!oldData) {
group.removeAll();
}
data.diff(oldData).add(function (newIdx) {
var point = data.getItemLayout(newIdx);
if (symbolNeedsDraw(data, point, newIdx, opt)) {
var symbolEl = new SymbolCtor(data, newIdx, seriesScope);
symbolEl.attr('position', point);
data.setItemGraphicEl(newIdx, symbolEl);
group.add(symbolEl);
}
}).update(function (newIdx, oldIdx) {
var symbolEl = oldData.getItemGraphicEl(oldIdx);
var point = data.getItemLayout(newIdx);
if (!symbolNeedsDraw(data, point, newIdx, opt)) {
group.remove(symbolEl);
return;
}
if (!symbolEl) {
symbolEl = new SymbolCtor(data, newIdx);
symbolEl.attr('position', point);
} else {
symbolEl.updateData(data, newIdx, seriesScope);
graphic.updateProps(symbolEl, {
position: point
}, seriesModel);
} // Add back
group.add(symbolEl);
data.setItemGraphicEl(newIdx, symbolEl);
}).remove(function (oldIdx) {
var el = oldData.getItemGraphicEl(oldIdx);
el && el.fadeOut(function () {
group.remove(el);
});
}).execute();
this._data = data;
};
symbolDrawProto.isPersistent = function () {
return true;
};
symbolDrawProto.updateLayout = function () {
var data = this._data;
if (data) {
// Not use animation
data.eachItemGraphicEl(function (el, idx) {
var point = data.getItemLayout(idx);
el.attr('position', point);
});
}
};
symbolDrawProto.incrementalPrepareUpdate = function (data) {
this._seriesScope = makeSeriesScope(data);
this._data = null;
this.group.removeAll();
};
/**
* Update symbols draw by new data
* @param {module:echarts/data/List} data
* @param {Object} [opt] Or isIgnore
* @param {Function} [opt.isIgnore]
* @param {Object} [opt.clipShape]
*/
symbolDrawProto.incrementalUpdate = function (taskParams, data, opt) {
opt = normalizeUpdateOpt(opt);
function updateIncrementalAndHover(el) {
if (!el.isGroup) {
el.incremental = el.useHoverLayer = true;
}
}
for (var idx = taskParams.start; idx < taskParams.end; idx++) {
var point = data.getItemLayout(idx);
if (symbolNeedsDraw(data, point, idx, opt)) {
var el = new this._symbolCtor(data, idx, this._seriesScope);
el.traverse(updateIncrementalAndHover);
el.attr('position', point);
this.group.add(el);
data.setItemGraphicEl(idx, el);
}
}
};
function normalizeUpdateOpt(opt) {
if (opt != null && !isObject(opt)) {
opt = {
isIgnore: opt
};
}
return opt || {};
}
symbolDrawProto.remove = function (enableAnimation) {
var group = this.group;
var data = this._data; // Incremental model do not have this._data.
if (data && enableAnimation) {
data.eachItemGraphicEl(function (el) {
el.fadeOut(function () {
group.remove(el);
});
});
} else {
group.removeAll();
}
};
function makeSeriesScope(data) {
var seriesModel = data.hostModel;
return {
itemStyle: seriesModel.getModel('itemStyle').getItemStyle(['color']),
hoverItemStyle: seriesModel.getModel('emphasis.itemStyle').getItemStyle(),
symbolRotate: seriesModel.get('symbolRotate'),
symbolOffset: seriesModel.get('symbolOffset'),
hoverAnimation: seriesModel.get('hoverAnimation'),
labelModel: seriesModel.getModel('label'),
hoverLabelModel: seriesModel.getModel('emphasis.label'),
cursorStyle: seriesModel.get('cursor')
};
}
var _default = SymbolDraw;
module.exports = _default;