public/zh/builder/src/echarts/component/axis/CartesianAxisView.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';
import AxisBuilder from './AxisBuilder';
import AxisView from './AxisView';
import * as cartesianAxisHelper from '../../coord/cartesian/cartesianAxisHelper';
var axisBuilderAttrs = ['axisLine', 'axisTickLabel', 'axisName'];
var selfBuilderAttrs = ['splitArea', 'splitLine']; // function getAlignWithLabel(model, axisModel) {
//     var alignWithLabel = model.get('alignWithLabel');
//     if (alignWithLabel === 'auto') {
//         alignWithLabel = axisModel.get('axisTick.alignWithLabel');
//     }
//     return alignWithLabel;
// }

var CartesianAxisView = AxisView.extend({
  type: 'cartesianAxis',
  axisPointerClass: 'CartesianAxisPointer',

  /**
   * @override
   */
  render: function (axisModel, ecModel, api, payload) {
    this.group.removeAll();
    var oldAxisGroup = this._axisGroup;
    this._axisGroup = new graphic.Group();
    this.group.add(this._axisGroup);

    if (!axisModel.get('show')) {
      return;
    }

    var gridModel = axisModel.getCoordSysModel();
    var layout = cartesianAxisHelper.layout(gridModel, axisModel);
    var axisBuilder = new AxisBuilder(axisModel, layout);
    zrUtil.each(axisBuilderAttrs, axisBuilder.add, axisBuilder);

    this._axisGroup.add(axisBuilder.getGroup());

    zrUtil.each(selfBuilderAttrs, function (name) {
      if (axisModel.get(name + '.show')) {
        this['_' + name](axisModel, gridModel);
      }
    }, this);
    graphic.groupTransition(oldAxisGroup, this._axisGroup, axisModel);
    CartesianAxisView.superCall(this, 'render', axisModel, ecModel, api, payload);
  },
  remove: function () {
    this._splitAreaColors = null;
  },

  /**
   * @param {module:echarts/coord/cartesian/AxisModel} axisModel
   * @param {module:echarts/coord/cartesian/GridModel} gridModel
   * @private
   */
  _splitLine: function (axisModel, gridModel) {
    var axis = axisModel.axis;

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

    var splitLineModel = axisModel.getModel('splitLine');
    var lineStyleModel = splitLineModel.getModel('lineStyle');
    var lineColors = lineStyleModel.get('color');
    lineColors = zrUtil.isArray(lineColors) ? lineColors : [lineColors];
    var gridRect = gridModel.coordinateSystem.getRect();
    var isHorizontal = axis.isHorizontal();
    var lineCount = 0;
    var ticksCoords = axis.getTicksCoords({
      tickModel: splitLineModel
    });
    var p1 = [];
    var p2 = []; // Simple optimization
    // Batching the lines if color are the same

    var lineStyle = lineStyleModel.getLineStyle();

    for (var i = 0; i < ticksCoords.length; i++) {
      var tickCoord = axis.toGlobalCoord(ticksCoords[i].coord);

      if (isHorizontal) {
        p1[0] = tickCoord;
        p1[1] = gridRect.y;
        p2[0] = tickCoord;
        p2[1] = gridRect.y + gridRect.height;
      } else {
        p1[0] = gridRect.x;
        p1[1] = tickCoord;
        p2[0] = gridRect.x + gridRect.width;
        p2[1] = tickCoord;
      }

      var colorIndex = lineCount++ % lineColors.length;
      var tickValue = ticksCoords[i].tickValue;

      this._axisGroup.add(new graphic.Line({
        anid: tickValue != null ? 'line_' + ticksCoords[i].tickValue : null,
        subPixelOptimize: true,
        shape: {
          x1: p1[0],
          y1: p1[1],
          x2: p2[0],
          y2: p2[1]
        },
        style: zrUtil.defaults({
          stroke: lineColors[colorIndex]
        }, lineStyle),
        silent: true
      }));
    }
  },

  /**
   * @param {module:echarts/coord/cartesian/AxisModel} axisModel
   * @param {module:echarts/coord/cartesian/GridModel} gridModel
   * @private
   */
  _splitArea: function (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 = this._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);

      this._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;
    }

    this._splitAreaColors = newSplitAreaColors;
  }
});
CartesianAxisView.extend({
  type: 'xAxis'
});
CartesianAxisView.extend({
  type: 'yAxis'
});