Blame view

node_modules/echarts/src/coord/cartesian/cartesianAxisHelper.js 3.11 KB
aaac7fed   liuqimichale   add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
  /*
  * 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';
  
  /**
   * Can only be called after coordinate system creation stage.
   * (Can be called before coordinate system update stage).
   *
   * @param {Object} opt {labelInside}
   * @return {Object} {
   *  position, rotation, labelDirection, labelOffset,
   *  tickDirection, labelRotate, z2
   * }
   */
  export function layout(gridModel, axisModel, opt) {
      opt = opt || {};
      var grid = gridModel.coordinateSystem;
      var axis = axisModel.axis;
      var layout = {};
      var otherAxisOnZeroOf = axis.getAxesOnZeroOf()[0];
  
      var rawAxisPosition = axis.position;
      var axisPosition = otherAxisOnZeroOf ? 'onZero' : rawAxisPosition;
      var axisDim = axis.dim;
  
      var rect = grid.getRect();
      var rectBound = [rect.x, rect.x + rect.width, rect.y, rect.y + rect.height];
      var idx = {left: 0, right: 1, top: 0, bottom: 1, onZero: 2};
      var axisOffset = axisModel.get('offset') || 0;
  
      var posBound = axisDim === 'x'
          ? [rectBound[2] - axisOffset, rectBound[3] + axisOffset]
          : [rectBound[0] - axisOffset, rectBound[1] + axisOffset];
  
      if (otherAxisOnZeroOf) {
          var onZeroCoord = otherAxisOnZeroOf.toGlobalCoord(otherAxisOnZeroOf.dataToCoord(0));
          posBound[idx.onZero] = Math.max(Math.min(onZeroCoord, posBound[1]), posBound[0]);
      }
  
      // Axis position
      layout.position = [
          axisDim === 'y' ? posBound[idx[axisPosition]] : rectBound[0],
          axisDim === 'x' ? posBound[idx[axisPosition]] : rectBound[3]
      ];
  
      // Axis rotation
      layout.rotation = Math.PI / 2 * (axisDim === 'x' ? 0 : 1);
  
      // Tick and label direction, x y is axisDim
      var dirMap = {top: -1, bottom: 1, left: -1, right: 1};
  
      layout.labelDirection = layout.tickDirection = layout.nameDirection = dirMap[rawAxisPosition];
      layout.labelOffset = otherAxisOnZeroOf ? posBound[idx[rawAxisPosition]] - posBound[idx.onZero] : 0;
  
      if (axisModel.get('axisTick.inside')) {
          layout.tickDirection = -layout.tickDirection;
      }
      if (zrUtil.retrieve(opt.labelInside, axisModel.get('axisLabel.inside'))) {
          layout.labelDirection = -layout.labelDirection;
      }
  
      // Special label rotation
      var labelRotate = axisModel.get('axisLabel.rotate');
      layout.labelRotate = axisPosition === 'top' ? -labelRotate : labelRotate;
  
      // Over splitLine and splitArea
      layout.z2 = 1;
  
      return layout;
  }