逐步完成前后端服务器

frontend/node_modules/echarts/lib/chart/graph/createView.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.
+*/
+// FIXME Where to create the simple view coordinate system
+import View from '../../coord/View.js';
+import { getLayoutRect } from '../../util/layout.js';
+import * as bbox from 'zrender/lib/core/bbox.js';
+import { extend } from 'zrender/lib/core/util.js';
+function getViewRect(seriesModel, api, aspect) {
+  var option = extend(seriesModel.getBoxLayoutParams(), {
+    aspect: aspect
+  });
+  return getLayoutRect(option, {
+    width: api.getWidth(),
+    height: api.getHeight()
+  });
+}
+export default function createViewCoordSys(ecModel, api) {
+  var viewList = [];
+  ecModel.eachSeriesByType('graph', function (seriesModel) {
+    var coordSysType = seriesModel.get('coordinateSystem');
+    if (!coordSysType || coordSysType === 'view') {
+      var data_1 = seriesModel.getData();
+      var positions = data_1.mapArray(function (idx) {
+        var itemModel = data_1.getItemModel(idx);
+        return [+itemModel.get('x'), +itemModel.get('y')];
+      });
+      var min = [];
+      var max = [];
+      bbox.fromPoints(positions, min, max);
+      // If width or height is 0
+      if (max[0] - min[0] === 0) {
+        max[0] += 1;
+        min[0] -= 1;
+      }
+      if (max[1] - min[1] === 0) {
+        max[1] += 1;
+        min[1] -= 1;
+      }
+      var aspect = (max[0] - min[0]) / (max[1] - min[1]);
+      // FIXME If get view rect after data processed?
+      var viewRect = getViewRect(seriesModel, api, aspect);
+      // Position may be NaN, use view rect instead
+      if (isNaN(aspect)) {
+        min = [viewRect.x, viewRect.y];
+        max = [viewRect.x + viewRect.width, viewRect.y + viewRect.height];
+      }
+      var bbWidth = max[0] - min[0];
+      var bbHeight = max[1] - min[1];
+      var viewWidth = viewRect.width;
+      var viewHeight = viewRect.height;
+      var viewCoordSys = seriesModel.coordinateSystem = new View();
+      viewCoordSys.zoomLimit = seriesModel.get('scaleLimit');
+      viewCoordSys.setBoundingRect(min[0], min[1], bbWidth, bbHeight);
+      viewCoordSys.setViewRect(viewRect.x, viewRect.y, viewWidth, viewHeight);
+      // Update roam info
+      viewCoordSys.setCenter(seriesModel.get('center'), api);
+      viewCoordSys.setZoom(seriesModel.get('zoom'));
+      viewList.push(viewCoordSys);
+    }
+  });
+  return viewList;
+}