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89 lines
15 KiB
JavaScript
89 lines
15 KiB
JavaScript
import scrollparent from './scrollparent';
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export class FcRectangleSelectService {
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constructor(modelService, selectElement, applyFunction) {
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this.selectRect = {
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x1: 0,
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x2: 0,
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y1: 0,
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y2: 0
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};
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this.modelService = modelService;
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this.selectElement = selectElement;
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this.$canvasElement = $(this.modelService.canvasHtmlElement);
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this.$scrollParent = $(scrollparent(this.modelService.canvasHtmlElement));
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this.applyFunction = applyFunction;
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}
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mousedown(e) {
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if (this.modelService.isEditable() && !e.ctrlKey && !e.metaKey && e.button === 0
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&& this.selectElement.hidden) {
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this.selectElement.hidden = false;
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const offset = this.$canvasElement.offset();
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this.selectRect.x1 = Math.round(e.pageX - offset.left);
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this.selectRect.y1 = Math.round(e.pageY - offset.top);
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this.selectRect.x2 = this.selectRect.x1;
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this.selectRect.y2 = this.selectRect.y1;
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this.updateSelectRect();
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}
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}
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mousemove(e) {
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if (this.modelService.isEditable() && !e.ctrlKey && !e.metaKey && e.button === 0
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&& !this.selectElement.hidden) {
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const offset = this.$canvasElement.offset();
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this.selectRect.x2 = Math.round(e.pageX - offset.left);
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this.selectRect.y2 = Math.round(e.pageY - offset.top);
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this.updateScroll(offset);
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this.updateSelectRect();
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}
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}
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updateScroll(offset) {
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const rect = this.$scrollParent[0].getBoundingClientRect();
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const bottom = rect.bottom - offset.top;
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const right = rect.right - offset.left;
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const top = rect.top - offset.top;
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const left = rect.left - offset.left;
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if (this.selectRect.y2 - top < 25) {
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const topScroll = 25 - (this.selectRect.y2 - top);
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const scroll = this.$scrollParent.scrollTop();
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this.$scrollParent.scrollTop(scroll - topScroll);
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}
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else if (bottom - this.selectRect.y2 < 40) {
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const bottomScroll = 40 - (bottom - this.selectRect.y2);
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const scroll = this.$scrollParent.scrollTop();
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this.$scrollParent.scrollTop(scroll + bottomScroll);
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}
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if (this.selectRect.x2 - left < 25) {
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const leftScroll = 25 - (this.selectRect.x2 - left);
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const scroll = this.$scrollParent.scrollLeft();
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this.$scrollParent.scrollLeft(scroll - leftScroll);
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}
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else if (right - this.selectRect.x2 < 40) {
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const rightScroll = 40 - (right - this.selectRect.x2);
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const scroll = this.$scrollParent.scrollLeft();
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this.$scrollParent.scrollLeft(scroll + rightScroll);
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}
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}
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mouseup(e) {
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if (this.modelService.isEditable() && !e.ctrlKey && !e.metaKey && e.button === 0
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&& !this.selectElement.hidden) {
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const rectBox = this.selectElement.getBoundingClientRect();
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this.selectElement.hidden = true;
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this.selectObjects(rectBox);
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}
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}
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updateSelectRect() {
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const x3 = Math.min(this.selectRect.x1, this.selectRect.x2);
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const x4 = Math.max(this.selectRect.x1, this.selectRect.x2);
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const y3 = Math.min(this.selectRect.y1, this.selectRect.y2);
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const y4 = Math.max(this.selectRect.y1, this.selectRect.y2);
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this.selectElement.style.left = x3 + 'px';
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this.selectElement.style.top = y3 + 'px';
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this.selectElement.style.width = x4 - x3 + 'px';
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this.selectElement.style.height = y4 - y3 + 'px';
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}
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selectObjects(rectBox) {
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this.applyFunction(() => {
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this.modelService.selectAllInRect(rectBox);
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});
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}
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}
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{ FcModelService } from './model.service';\nimport { FcRectBox } from './ngx-flowchart.models';\nimport scrollparent from './scrollparent';\n\ninterface Rectangle {\n  x1: number;\n  x2: number;\n  y1: number;\n  y2: number;\n}\n\nexport class FcRectangleSelectService {\n\n  private readonly selectRect: Rectangle = {\n    x1: 0,\n    x2: 0,\n    y1: 0,\n    y2: 0\n  };\n\n  private readonly modelService: FcModelService;\n  private readonly selectElement: HTMLElement;\n  private readonly $canvasElement: JQuery<HTMLElement>;\n  private readonly $scrollParent: JQuery<HTMLElement>;\n  private readonly applyFunction: <T>(fn: (...args: any[]) => T) => T;\n\n  constructor(modelService: FcModelService,\n              selectElement: HTMLElement,\n              applyFunction: <T>(fn: (...args: any[]) => T) => T) {\n    this.modelService = modelService;\n    this.selectElement = selectElement;\n    this.$canvasElement = $(this.modelService.canvasHtmlElement);\n    this.$scrollParent = $(scrollparent(this.modelService.canvasHtmlElement));\n    this.applyFunction = applyFunction;\n  }\n\n  public mousedown(e: MouseEvent) {\n    if (this.modelService.isEditable() && !e.ctrlKey && !e.metaKey && e.button === 0\n      && this.selectElement.hidden) {\n      this.selectElement.hidden = false;\n      const offset = this.$canvasElement.offset();\n      this.selectRect.x1 = Math.round(e.pageX - offset.left);\n      this.selectRect.y1 = Math.round(e.pageY - offset.top);\n      this.selectRect.x2 = this.selectRect.x1;\n      this.selectRect.y2 = this.selectRect.y1;\n      this.updateSelectRect();\n    }\n  }\n\n  public mousemove(e: MouseEvent) {\n    if (this.modelService.isEditable() && !e.ctrlKey && !e.metaKey && e.button === 0\n      && !this.selectElement.hidden) {\n      const offset = this.$canvasElement.offset();\n      this.selectRect.x2 = Math.round(e.pageX - offset.left);\n      this.selectRect.y2 = Math.round(e.pageY - offset.top);\n      this.updateScroll(offset);\n      this.updateSelectRect();\n    }\n  }\n\n  private updateScroll(offset: JQuery.Coordinates) {\n    const rect = this.$scrollParent[0].getBoundingClientRect();\n    const bottom = rect.bottom - offset.top;\n    const right = rect.right - offset.left;\n    const top = rect.top - offset.top;\n    const left = rect.left - offset.left;\n    if (this.selectRect.y2 - top < 25) {\n      const topScroll = 25 - (this.selectRect.y2 - top);\n      const scroll = this.$scrollParent.scrollTop();\n      this.$scrollParent.scrollTop(scroll - topScroll);\n    } else if (bottom - this.selectRect.y2 < 40) {\n      const bottomScroll = 40 - (bottom - this.selectRect.y2);\n      const scroll = this.$scrollParent.scrollTop();\n      this.$scrollParent.scrollTop(scroll + bottomScroll);\n    }\n    if (this.selectRect.x2 - left < 25) {\n      const leftScroll = 25 - (this.selectRect.x2 - left);\n      const scroll = this.$scrollParent.scrollLeft();\n      this.$scrollParent.scrollLeft(scroll - leftScroll);\n    } else if (right - this.selectRect.x2 < 40) {\n      const rightScroll = 40 - (right - this.selectRect.x2);\n      const scroll = this.$scrollParent.scrollLeft();\n      this.$scrollParent.scrollLeft(scroll + rightScroll);\n    }\n  }\n\n  public mouseup(e: MouseEvent) {\n    if (this.modelService.isEditable() && !e.ctrlKey && !e.metaKey && e.button === 0\n      && !this.selectElement.hidden) {\n      const rectBox = this.selectElement.getBoundingClientRect() as FcRectBox;\n      this.selectElement.hidden = true;\n      this.selectObjects(rectBox);\n    }\n  }\n\n  private updateSelectRect() {\n    const x3 = Math.min(this.selectRect.x1, this.selectRect.x2);\n    const x4 = Math.max(this.selectRect.x1, this.selectRect.x2);\n    const y3 = Math.min(this.selectRect.y1, this.selectRect.y2);\n    const y4 = Math.max(this.selectRect.y1, this.selectRect.y2);\n    this.selectElement.style.left = x3 + 'px';\n    this.selectElement.style.top = y3 + 'px';\n    this.selectElement.style.width = x4 - x3 + 'px';\n    this.selectElement.style.height = y4 - y3 + 'px';\n  }\n\n  private selectObjects(rectBox: FcRectBox) {\n    this.applyFunction(() => {\n      this.modelService.selectAllInRect(rectBox);\n    });\n  }\n\n}\n\n"]}
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