en/builder/src/echarts3/chart/bar/BarView.js

import { __DEV__ } from '../../config';
import * as echarts from '../../echarts';
import * as zrUtil from 'zrender/src/core/util';
import * as graphic from '../../util/graphic';
import { setLabel } from './helper';
import Model from '../../model/Model';
import barItemStyle from './barItemStyle';
var BAR_BORDER_WIDTH_QUERY = ['itemStyle', 'normal', 'barBorderWidth']; // FIXME
// Just for compatible with ec2.

zrUtil.extend(Model.prototype, barItemStyle);
export default echarts.extendChartView({
  type: 'bar',
  render: function (seriesModel, ecModel, api) {
    var coordinateSystemType = seriesModel.get('coordinateSystem');

    if (coordinateSystemType === 'cartesian2d' || coordinateSystemType === 'polar') {
      this._render(seriesModel, ecModel, api);
    } else {}

    return this.group;
  },
  dispose: zrUtil.noop,
  _render: function (seriesModel, ecModel, api) {
    var group = this.group;
    var data = seriesModel.getData();
    var oldData = this._data;
    var coord = seriesModel.coordinateSystem;
    var baseAxis = coord.getBaseAxis();
    var isHorizontalOrRadial;

    if (coord.type === 'cartesian2d') {
      isHorizontalOrRadial = baseAxis.isHorizontal();
    } else if (coord.type === 'polar') {
      isHorizontalOrRadial = baseAxis.dim === 'angle';
    }

    var animationModel = seriesModel.isAnimationEnabled() ? seriesModel : null;
    data.diff(oldData).add(function (dataIndex) {
      if (!data.hasValue(dataIndex)) {
        return;
      }

      var itemModel = data.getItemModel(dataIndex);
      var layout = getLayout[coord.type](data, dataIndex, itemModel);
      var el = elementCreator[coord.type](data, dataIndex, itemModel, layout, isHorizontalOrRadial, animationModel);
      data.setItemGraphicEl(dataIndex, el);
      group.add(el);
      updateStyle(el, data, dataIndex, itemModel, layout, seriesModel, isHorizontalOrRadial, coord.type === 'polar');
    }).update(function (newIndex, oldIndex) {
      var el = oldData.getItemGraphicEl(oldIndex);

      if (!data.hasValue(newIndex)) {
        group.remove(el);
        return;
      }

      var itemModel = data.getItemModel(newIndex);
      var layout = getLayout[coord.type](data, newIndex, itemModel);

      if (el) {
        graphic.updateProps(el, {
          shape: layout
        }, animationModel, newIndex);
      } else {
        el = elementCreator[coord.type](data, newIndex, itemModel, layout, isHorizontalOrRadial, animationModel, true);
      }

      data.setItemGraphicEl(newIndex, el); // Add back

      group.add(el);
      updateStyle(el, data, newIndex, itemModel, layout, seriesModel, isHorizontalOrRadial, coord.type === 'polar');
    }).remove(function (dataIndex) {
      var el = oldData.getItemGraphicEl(dataIndex);

      if (coord.type === 'cartesian2d') {
        el && removeRect(dataIndex, animationModel, el);
      } else {
        el && removeSector(dataIndex, animationModel, el);
      }
    }).execute();
    this._data = data;
  },
  remove: function (ecModel, api) {
    var group = this.group;
    var data = this._data;

    if (ecModel.get('animation')) {
      if (data) {
        data.eachItemGraphicEl(function (el) {
          if (el.type === 'sector') {
            removeSector(el.dataIndex, ecModel, el);
          } else {
            removeRect(el.dataIndex, ecModel, el);
          }
        });
      }
    } else {
      group.removeAll();
    }
  }
});
var elementCreator = {
  cartesian2d: function (data, dataIndex, itemModel, layout, isHorizontal, animationModel, isUpdate) {
    var rect = new graphic.Rect({
      shape: zrUtil.extend({}, layout)
    }); // Animation

    if (animationModel) {
      var rectShape = rect.shape;
      var animateProperty = isHorizontal ? 'height' : 'width';
      var animateTarget = {};
      rectShape[animateProperty] = 0;
      animateTarget[animateProperty] = layout[animateProperty];
      graphic[isUpdate ? 'updateProps' : 'initProps'](rect, {
        shape: animateTarget
      }, animationModel, dataIndex);
    }

    return rect;
  },
  polar: function (data, dataIndex, itemModel, layout, isRadial, animationModel, isUpdate) {
    var sector = new graphic.Sector({
      shape: zrUtil.extend({}, layout)
    }); // Animation

    if (animationModel) {
      var sectorShape = sector.shape;
      var animateProperty = isRadial ? 'r' : 'endAngle';
      var animateTarget = {};
      sectorShape[animateProperty] = isRadial ? 0 : layout.startAngle;
      animateTarget[animateProperty] = layout[animateProperty];
      graphic[isUpdate ? 'updateProps' : 'initProps'](sector, {
        shape: animateTarget
      }, animationModel, dataIndex);
    }

    return sector;
  }
};

function removeRect(dataIndex, animationModel, el) {
  // Not show text when animating
  el.style.text = null;
  graphic.updateProps(el, {
    shape: {
      width: 0
    }
  }, animationModel, dataIndex, function () {
    el.parent && el.parent.remove(el);
  });
}

function removeSector(dataIndex, animationModel, el) {
  // Not show text when animating
  el.style.text = null;
  graphic.updateProps(el, {
    shape: {
      r: el.shape.r0
    }
  }, animationModel, dataIndex, function () {
    el.parent && el.parent.remove(el);
  });
}

var getLayout = {
  cartesian2d: function (data, dataIndex, itemModel) {
    var layout = data.getItemLayout(dataIndex);
    var fixedLineWidth = getLineWidth(itemModel, layout); // fix layout with lineWidth

    var signX = layout.width > 0 ? 1 : -1;
    var signY = layout.height > 0 ? 1 : -1;
    return {
      x: layout.x + signX * fixedLineWidth / 2,
      y: layout.y + signY * fixedLineWidth / 2,
      width: layout.width - signX * fixedLineWidth,
      height: layout.height - signY * fixedLineWidth
    };
  },
  polar: function (data, dataIndex, itemModel) {
    var layout = data.getItemLayout(dataIndex);
    return {
      cx: layout.cx,
      cy: layout.cy,
      r0: layout.r0,
      r: layout.r,
      startAngle: layout.startAngle,
      endAngle: layout.endAngle
    };
  }
};

function updateStyle(el, data, dataIndex, itemModel, layout, seriesModel, isHorizontal, isPolar) {
  var color = data.getItemVisual(dataIndex, 'color');
  var opacity = data.getItemVisual(dataIndex, 'opacity');
  var itemStyleModel = itemModel.getModel('itemStyle.normal');
  var hoverStyle = itemModel.getModel('itemStyle.emphasis').getBarItemStyle();

  if (!isPolar) {
    el.setShape('r', itemStyleModel.get('barBorderRadius') || 0);
  }

  el.useStyle(zrUtil.defaults({
    fill: color,
    opacity: opacity
  }, itemStyleModel.getBarItemStyle()));
  var cursorStyle = itemModel.getShallow('cursor');
  cursorStyle && el.attr('cursor', cursorStyle);
  var labelPositionOutside = isHorizontal ? layout.height > 0 ? 'bottom' : 'top' : layout.width > 0 ? 'left' : 'right';

  if (!isPolar) {
    setLabel(el.style, hoverStyle, itemModel, color, seriesModel, dataIndex, labelPositionOutside);
  }

  graphic.setHoverStyle(el, hoverStyle);
} // In case width or height are too small.


function getLineWidth(itemModel, rawLayout) {
  var lineWidth = itemModel.get(BAR_BORDER_WIDTH_QUERY) || 0;
  return Math.min(lineWidth, Math.abs(rawLayout.width), Math.abs(rawLayout.height));
}