zh/builder/src/echarts/component/axis/axisSplitHelper.js

/*
* 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 zrUtil from 'zrender/src/core/util';
import * as graphic from '../../util/graphic';
export function rectCoordAxisBuildSplitArea(axisView, axisGroup, axisModel, gridModel) {
  var axis = axisModel.axis;

  if (axis.scale.isBlank()) {
    return;
  }

  var splitAreaModel = axisModel.getModel('splitArea');
  var areaStyleModel = splitAreaModel.getModel('areaStyle');
  var areaColors = areaStyleModel.get('color');
  var gridRect = gridModel.coordinateSystem.getRect();
  var ticksCoords = axis.getTicksCoords({
    tickModel: splitAreaModel,
    clamp: true
  });

  if (!ticksCoords.length) {
    return;
  } // For Making appropriate splitArea animation, the color and anid
  // should be corresponding to previous one if possible.


  var areaColorsLen = areaColors.length;
  var lastSplitAreaColors = axisView.__splitAreaColors;
  var newSplitAreaColors = zrUtil.createHashMap();
  var colorIndex = 0;

  if (lastSplitAreaColors) {
    for (var i = 0; i < ticksCoords.length; i++) {
      var cIndex = lastSplitAreaColors.get(ticksCoords[i].tickValue);

      if (cIndex != null) {
        colorIndex = (cIndex + (areaColorsLen - 1) * i) % areaColorsLen;
        break;
      }
    }
  }

  var prev = axis.toGlobalCoord(ticksCoords[0].coord);
  var areaStyle = areaStyleModel.getAreaStyle();
  areaColors = zrUtil.isArray(areaColors) ? areaColors : [areaColors];

  for (var i = 1; i < ticksCoords.length; i++) {
    var tickCoord = axis.toGlobalCoord(ticksCoords[i].coord);
    var x;
    var y;
    var width;
    var height;

    if (axis.isHorizontal()) {
      x = prev;
      y = gridRect.y;
      width = tickCoord - x;
      height = gridRect.height;
      prev = x + width;
    } else {
      x = gridRect.x;
      y = prev;
      width = gridRect.width;
      height = tickCoord - y;
      prev = y + height;
    }

    var tickValue = ticksCoords[i - 1].tickValue;
    tickValue != null && newSplitAreaColors.set(tickValue, colorIndex);
    axisGroup.add(new graphic.Rect({
      anid: tickValue != null ? 'area_' + tickValue : null,
      shape: {
        x: x,
        y: y,
        width: width,
        height: height
      },
      style: zrUtil.defaults({
        fill: areaColors[colorIndex]
      }, areaStyle),
      silent: true
    }));
    colorIndex = (colorIndex + 1) % areaColorsLen;
  }

  axisView.__splitAreaColors = newSplitAreaColors;
}
export function rectCoordAxisHandleRemove(axisView) {
  axisView.__splitAreaColors = null;
}