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frontend/node_modules/echarts/lib/coord/Axis.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 { each, map } from 'zrender/lib/core/util.js';
+import { linearMap, getPixelPrecision, round } from '../util/number.js';
+import { createAxisTicks, createAxisLabels, calculateCategoryInterval } from './axisTickLabelBuilder.js';
+var NORMALIZED_EXTENT = [0, 1];
+/**
+ * Base class of Axis.
+ */
+var Axis = /** @class */function () {
+  function Axis(dim, scale, extent) {
+    this.onBand = false;
+    this.inverse = false;
+    this.dim = dim;
+    this.scale = scale;
+    this._extent = extent || [0, 0];
+  }
+  /**
+   * If axis extent contain given coord
+   */
+  Axis.prototype.contain = function (coord) {
+    var extent = this._extent;
+    var min = Math.min(extent[0], extent[1]);
+    var max = Math.max(extent[0], extent[1]);
+    return coord >= min && coord <= max;
+  };
+  /**
+   * If axis extent contain given data
+   */
+  Axis.prototype.containData = function (data) {
+    return this.scale.contain(data);
+  };
+  /**
+   * Get coord extent.
+   */
+  Axis.prototype.getExtent = function () {
+    return this._extent.slice();
+  };
+  /**
+   * Get precision used for formatting
+   */
+  Axis.prototype.getPixelPrecision = function (dataExtent) {
+    return getPixelPrecision(dataExtent || this.scale.getExtent(), this._extent);
+  };
+  /**
+   * Set coord extent
+   */
+  Axis.prototype.setExtent = function (start, end) {
+    var extent = this._extent;
+    extent[0] = start;
+    extent[1] = end;
+  };
+  /**
+   * Convert data to coord. Data is the rank if it has an ordinal scale
+   */
+  Axis.prototype.dataToCoord = function (data, clamp) {
+    var extent = this._extent;
+    var scale = this.scale;
+    data = scale.normalize(data);
+    if (this.onBand && scale.type === 'ordinal') {
+      extent = extent.slice();
+      fixExtentWithBands(extent, scale.count());
+    }
+    return linearMap(data, NORMALIZED_EXTENT, extent, clamp);
+  };
+  /**
+   * Convert coord to data. Data is the rank if it has an ordinal scale
+   */
+  Axis.prototype.coordToData = function (coord, clamp) {
+    var extent = this._extent;
+    var scale = this.scale;
+    if (this.onBand && scale.type === 'ordinal') {
+      extent = extent.slice();
+      fixExtentWithBands(extent, scale.count());
+    }
+    var t = linearMap(coord, extent, NORMALIZED_EXTENT, clamp);
+    return this.scale.scale(t);
+  };
+  /**
+   * Convert pixel point to data in axis
+   */
+  Axis.prototype.pointToData = function (point, clamp) {
+    // Should be implemented in derived class if necessary.
+    return;
+  };
+  /**
+   * Different from `zrUtil.map(axis.getTicks(), axis.dataToCoord, axis)`,
+   * `axis.getTicksCoords` considers `onBand`, which is used by
+   * `boundaryGap:true` of category axis and splitLine and splitArea.
+   * @param opt.tickModel default: axis.model.getModel('axisTick')
+   * @param opt.clamp If `true`, the first and the last
+   *        tick must be at the axis end points. Otherwise, clip ticks
+   *        that outside the axis extent.
+   */
+  Axis.prototype.getTicksCoords = function (opt) {
+    opt = opt || {};
+    var tickModel = opt.tickModel || this.getTickModel();
+    var result = createAxisTicks(this, tickModel);
+    var ticks = result.ticks;
+    var ticksCoords = map(ticks, function (tickVal) {
+      return {
+        coord: this.dataToCoord(this.scale.type === 'ordinal' ? this.scale.getRawOrdinalNumber(tickVal) : tickVal),
+        tickValue: tickVal
+      };
+    }, this);
+    var alignWithLabel = tickModel.get('alignWithLabel');
+    fixOnBandTicksCoords(this, ticksCoords, alignWithLabel, opt.clamp);
+    return ticksCoords;
+  };
+  Axis.prototype.getMinorTicksCoords = function () {
+    if (this.scale.type === 'ordinal') {
+      // Category axis doesn't support minor ticks
+      return [];
+    }
+    var minorTickModel = this.model.getModel('minorTick');
+    var splitNumber = minorTickModel.get('splitNumber');
+    // Protection.
+    if (!(splitNumber > 0 && splitNumber < 100)) {
+      splitNumber = 5;
+    }
+    var minorTicks = this.scale.getMinorTicks(splitNumber);
+    var minorTicksCoords = map(minorTicks, function (minorTicksGroup) {
+      return map(minorTicksGroup, function (minorTick) {
+        return {
+          coord: this.dataToCoord(minorTick),
+          tickValue: minorTick
+        };
+      }, this);
+    }, this);
+    return minorTicksCoords;
+  };
+  Axis.prototype.getViewLabels = function () {
+    return createAxisLabels(this).labels;
+  };
+  Axis.prototype.getLabelModel = function () {
+    return this.model.getModel('axisLabel');
+  };
+  /**
+   * Notice here we only get the default tick model. For splitLine
+   * or splitArea, we should pass the splitLineModel or splitAreaModel
+   * manually when calling `getTicksCoords`.
+   * In GL, this method may be overridden to:
+   * `axisModel.getModel('axisTick', grid3DModel.getModel('axisTick'));`
+   */
+  Axis.prototype.getTickModel = function () {
+    return this.model.getModel('axisTick');
+  };
+  /**
+   * Get width of band
+   */
+  Axis.prototype.getBandWidth = function () {
+    var axisExtent = this._extent;
+    var dataExtent = this.scale.getExtent();
+    var len = dataExtent[1] - dataExtent[0] + (this.onBand ? 1 : 0);
+    // Fix #2728, avoid NaN when only one data.
+    len === 0 && (len = 1);
+    var size = Math.abs(axisExtent[1] - axisExtent[0]);
+    return Math.abs(size) / len;
+  };
+  /**
+   * Only be called in category axis.
+   * Can be overridden, consider other axes like in 3D.
+   * @return Auto interval for cateogry axis tick and label
+   */
+  Axis.prototype.calculateCategoryInterval = function () {
+    return calculateCategoryInterval(this);
+  };
+  return Axis;
+}();
+function fixExtentWithBands(extent, nTick) {
+  var size = extent[1] - extent[0];
+  var len = nTick;
+  var margin = size / len / 2;
+  extent[0] += margin;
+  extent[1] -= margin;
+}
+// If axis has labels [1, 2, 3, 4]. Bands on the axis are
+// |---1---|---2---|---3---|---4---|.
+// So the displayed ticks and splitLine/splitArea should between
+// each data item, otherwise cause misleading (e.g., split tow bars
+// of a single data item when there are two bar series).
+// Also consider if tickCategoryInterval > 0 and onBand, ticks and
+// splitLine/spliteArea should layout appropriately corresponding
+// to displayed labels. (So we should not use `getBandWidth` in this
+// case).
+function fixOnBandTicksCoords(axis, ticksCoords, alignWithLabel, clamp) {
+  var ticksLen = ticksCoords.length;
+  if (!axis.onBand || alignWithLabel || !ticksLen) {
+    return;
+  }
+  var axisExtent = axis.getExtent();
+  var last;
+  var diffSize;
+  if (ticksLen === 1) {
+    ticksCoords[0].coord = axisExtent[0];
+    last = ticksCoords[1] = {
+      coord: axisExtent[1],
+      tickValue: ticksCoords[0].tickValue
+    };
+  } else {
+    var crossLen = ticksCoords[ticksLen - 1].tickValue - ticksCoords[0].tickValue;
+    var shift_1 = (ticksCoords[ticksLen - 1].coord - ticksCoords[0].coord) / crossLen;
+    each(ticksCoords, function (ticksItem) {
+      ticksItem.coord -= shift_1 / 2;
+    });
+    var dataExtent = axis.scale.getExtent();
+    diffSize = 1 + dataExtent[1] - ticksCoords[ticksLen - 1].tickValue;
+    last = {
+      coord: ticksCoords[ticksLen - 1].coord + shift_1 * diffSize,
+      tickValue: dataExtent[1] + 1
+    };
+    ticksCoords.push(last);
+  }
+  var inverse = axisExtent[0] > axisExtent[1];
+  // Handling clamp.
+  if (littleThan(ticksCoords[0].coord, axisExtent[0])) {
+    clamp ? ticksCoords[0].coord = axisExtent[0] : ticksCoords.shift();
+  }
+  if (clamp && littleThan(axisExtent[0], ticksCoords[0].coord)) {
+    ticksCoords.unshift({
+      coord: axisExtent[0]
+    });
+  }
+  if (littleThan(axisExtent[1], last.coord)) {
+    clamp ? last.coord = axisExtent[1] : ticksCoords.pop();
+  }
+  if (clamp && littleThan(last.coord, axisExtent[1])) {
+    ticksCoords.push({
+      coord: axisExtent[1]
+    });
+  }
+  function littleThan(a, b) {
+    // Avoid rounding error cause calculated tick coord different with extent.
+    // It may cause an extra unnecessary tick added.
+    a = round(a);
+    b = round(b);
+    return inverse ? a > b : a < b;
+  }
+}
+export default Axis;