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frontend/node_modules/echarts/lib/chart/helper/LineDraw.js

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+
+/*
+* 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.
+*/
+
+
+/**
+ * AUTO-GENERATED FILE. DO NOT MODIFY.
+ */
+
+/*
+* 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.
+*/
+import * as graphic from '../../util/graphic.js';
+import LineGroup from './Line.js';
+import { getLabelStatesModels } from '../../label/labelStyle.js';
+var LineDraw = /** @class */function () {
+  function LineDraw(LineCtor) {
+    this.group = new graphic.Group();
+    this._LineCtor = LineCtor || LineGroup;
+  }
+  LineDraw.prototype.updateData = function (lineData) {
+    var _this = this;
+    // Remove progressive els.
+    this._progressiveEls = null;
+    var lineDraw = this;
+    var group = lineDraw.group;
+    var oldLineData = lineDraw._lineData;
+    lineDraw._lineData = lineData;
+    // There is no oldLineData only when first rendering or switching from
+    // stream mode to normal mode, where previous elements should be removed.
+    if (!oldLineData) {
+      group.removeAll();
+    }
+    var seriesScope = makeSeriesScope(lineData);
+    lineData.diff(oldLineData).add(function (idx) {
+      _this._doAdd(lineData, idx, seriesScope);
+    }).update(function (newIdx, oldIdx) {
+      _this._doUpdate(oldLineData, lineData, oldIdx, newIdx, seriesScope);
+    }).remove(function (idx) {
+      group.remove(oldLineData.getItemGraphicEl(idx));
+    }).execute();
+  };
+  ;
+  LineDraw.prototype.updateLayout = function () {
+    var lineData = this._lineData;
+    // Do not support update layout in incremental mode.
+    if (!lineData) {
+      return;
+    }
+    lineData.eachItemGraphicEl(function (el, idx) {
+      el.updateLayout(lineData, idx);
+    }, this);
+  };
+  ;
+  LineDraw.prototype.incrementalPrepareUpdate = function (lineData) {
+    this._seriesScope = makeSeriesScope(lineData);
+    this._lineData = null;
+    this.group.removeAll();
+  };
+  ;
+  LineDraw.prototype.incrementalUpdate = function (taskParams, lineData) {
+    this._progressiveEls = [];
+    function updateIncrementalAndHover(el) {
+      if (!el.isGroup && !isEffectObject(el)) {
+        el.incremental = true;
+        el.ensureState('emphasis').hoverLayer = true;
+      }
+    }
+    for (var idx = taskParams.start; idx < taskParams.end; idx++) {
+      var itemLayout = lineData.getItemLayout(idx);
+      if (lineNeedsDraw(itemLayout)) {
+        var el = new this._LineCtor(lineData, idx, this._seriesScope);
+        el.traverse(updateIncrementalAndHover);
+        this.group.add(el);
+        lineData.setItemGraphicEl(idx, el);
+        this._progressiveEls.push(el);
+      }
+    }
+  };
+  ;
+  LineDraw.prototype.remove = function () {
+    this.group.removeAll();
+  };
+  ;
+  LineDraw.prototype.eachRendered = function (cb) {
+    graphic.traverseElements(this._progressiveEls || this.group, cb);
+  };
+  LineDraw.prototype._doAdd = function (lineData, idx, seriesScope) {
+    var itemLayout = lineData.getItemLayout(idx);
+    if (!lineNeedsDraw(itemLayout)) {
+      return;
+    }
+    var el = new this._LineCtor(lineData, idx, seriesScope);
+    lineData.setItemGraphicEl(idx, el);
+    this.group.add(el);
+  };
+  LineDraw.prototype._doUpdate = function (oldLineData, newLineData, oldIdx, newIdx, seriesScope) {
+    var itemEl = oldLineData.getItemGraphicEl(oldIdx);
+    if (!lineNeedsDraw(newLineData.getItemLayout(newIdx))) {
+      this.group.remove(itemEl);
+      return;
+    }
+    if (!itemEl) {
+      itemEl = new this._LineCtor(newLineData, newIdx, seriesScope);
+    } else {
+      itemEl.updateData(newLineData, newIdx, seriesScope);
+    }
+    newLineData.setItemGraphicEl(newIdx, itemEl);
+    this.group.add(itemEl);
+  };
+  return LineDraw;
+}();
+function isEffectObject(el) {
+  return el.animators && el.animators.length > 0;
+}
+function makeSeriesScope(lineData) {
+  var hostModel = lineData.hostModel;
+  var emphasisModel = hostModel.getModel('emphasis');
+  return {
+    lineStyle: hostModel.getModel('lineStyle').getLineStyle(),
+    emphasisLineStyle: emphasisModel.getModel(['lineStyle']).getLineStyle(),
+    blurLineStyle: hostModel.getModel(['blur', 'lineStyle']).getLineStyle(),
+    selectLineStyle: hostModel.getModel(['select', 'lineStyle']).getLineStyle(),
+    emphasisDisabled: emphasisModel.get('disabled'),
+    blurScope: emphasisModel.get('blurScope'),
+    focus: emphasisModel.get('focus'),
+    labelStatesModels: getLabelStatesModels(hostModel)
+  };
+}
+function isPointNaN(pt) {
+  return isNaN(pt[0]) || isNaN(pt[1]);
+}
+function lineNeedsDraw(pts) {
+  return pts && !isPointNaN(pts[0]) && !isPointNaN(pts[1]);
+}
+export default LineDraw;