SLinearGradient.ts 3.3 KB

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  1. /*
  2. * *********************************************************************************************************************
  3. *
  4. * !!
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  19. * .:R888888I
  20. * .&888888I Copyright (c) 2009-2020. 博锐尚格科技股份有限公司
  21. * ~8888'
  22. * .!88~ All rights reserved.
  23. *
  24. * *********************************************************************************************************************
  25. */
  26. import { SGradient, SPoint } from "./";
  27. /**
  28. * 线性渐变
  29. *
  30. * @author 庞利祥 <sybotan@126.com>
  31. */
  32. export class SLinearGradient extends SGradient {
  33. /**
  34. * 构造函数
  35. *
  36. * @param start 起点坐标
  37. * @param end 终点坐标
  38. */
  39. constructor(start: SPoint, end: SPoint);
  40. /**
  41. * 构造函数
  42. *
  43. * @param x1 起点 X 坐标
  44. * @param y1 起点 Y 坐标
  45. * @param x2 终点 X 坐标
  46. * @param y2 终点 Y 坐标
  47. */
  48. constructor(x1: number, y1: number, x2: number, y2: number);
  49. /**
  50. * 构造函数(重载实现)
  51. *
  52. * @param x1 起点 X 坐标
  53. * @param y1 起点 Y 坐标
  54. * @param x2 终点 X 坐标
  55. * @param y2 终点 Y 坐标
  56. */
  57. constructor(
  58. x1: number | SPoint,
  59. y1: number | SPoint,
  60. x2?: number,
  61. y2?: number
  62. ) {
  63. super();
  64. // 重载 constructor(start: SPoint, end: SPoint);
  65. if (x1 instanceof SPoint && y1 instanceof SPoint) {
  66. this.start = new SPoint(x1);
  67. this.end = new SPoint(y1);
  68. } else { // 重载 constructor(x1: number, y1: number, x2: number, y2: number);
  69. this.start = new SPoint(x1 as number, y1 as number);
  70. this.end = new SPoint(x2 as number, y2 as number);
  71. }
  72. }
  73. /**
  74. * 转为字符串保存
  75. *
  76. * @return 转为字符串保存
  77. */
  78. value(): string {
  79. let str = `SLinearGradient{`;
  80. str += `${this.x1},${this.y1};`;
  81. str += `${this.x2},${this.y2};`;
  82. this.stopList.forEach((t): void => {
  83. str += `${t.pos},${t.color.value};`;
  84. });
  85. return `${str}}`;
  86. }
  87. }