SRectSelectItem.ts 3.3 KB

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  1. /*
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  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 { SGraphItem } from "@persagy-web/graph";
  27. import { SPainter, SPoint, SRect } from "@persagy-web/draw";
  28. import { SMouseEvent } from "@persagy-web/base";
  29. import { ItemColor, ItemOrder } from "..";
  30. /**
  31. * 矩形选择 item
  32. *
  33. * @author 郝建龙 <haojianlong@sagacloud.cn>
  34. */
  35. export class SRectSelectItem extends SGraphItem {
  36. /** 起点 */
  37. startPoint: SPoint = new SPoint();
  38. /** 终点 */
  39. endPoint: SPoint = new SPoint();
  40. /**
  41. * 构造函数
  42. *
  43. * @param parent 指向父对象
  44. * @param point 起点数据
  45. */
  46. constructor(parent: SGraphItem | null, point: SPoint) {
  47. super(parent);
  48. this.startPoint = point;
  49. this.endPoint = new SPoint(point.x, point.y);
  50. this.update();
  51. this.zOrder = ItemOrder.rectSelectOrder;
  52. } // Constructor
  53. /**
  54. * Item 对象边界区域
  55. *
  56. * @return 边界区域
  57. */
  58. boundingRect(): SRect {
  59. return new SRect(this.startPoint, this.endPoint);
  60. } // Function boundingRect()
  61. /**
  62. * 鼠标移动事件
  63. *
  64. * @param event 事件参数
  65. * @return 是否处理
  66. */
  67. onMouseMove(event: SMouseEvent): boolean {
  68. this.endPoint.x = event.x;
  69. this.endPoint.y = event.y;
  70. this.update();
  71. return true;
  72. } // Function onMouseMove()
  73. /**
  74. * Item 绘制操作
  75. *
  76. * @param painter 绘制对象
  77. */
  78. onDraw(painter: SPainter): void {
  79. painter.pen.lineWidth = painter.toPx(2);
  80. painter.pen.color = ItemColor.rectSelectOutColor;
  81. painter.brush.color = ItemColor.rectSelectInColor;
  82. painter.drawRect(this.startPoint, this.endPoint);
  83. } // Function onDraw()
  84. } // SRectSelectItem