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@autonomdev/ngx-document-scanner

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Angular 2+ component for cropping and enhancing images of documents

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/** * @fileoverview added by tsickle * Generated from: lib/components/shape-outline/ngx-shape-outline.component.ts * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ import { Component, Input, ViewChild } from '@angular/core'; import { LimitsService } from '../../services/limits.service'; var NgxShapeOutlineComponent = /** @class */ (function () { function NgxShapeOutlineComponent(limitsService) { this.limitsService = limitsService; this.color = '#3cabe2'; } /** * @return {?} */ NgxShapeOutlineComponent.prototype.ngAfterViewInit = /** * @return {?} */ function () { var _this = this; // init drawing canvas dimensions this.canvas.nativeElement.width = this.dimensions.width; this.canvas.nativeElement.height = this.dimensions.height; this.limitsService.positions.subscribe((/** * @param {?} positions * @return {?} */ function (positions) { if (positions.length === 4) { _this._points = positions; _this.sortPoints(); _this.clearCanvas(); _this.drawShape(); } })); // subscribe to changes in the pane's dimensions this.limitsService.paneDimensions.subscribe((/** * @param {?} dimensions * @return {?} */ function (dimensions) { _this.clearCanvas(); _this.canvas.nativeElement.width = dimensions.width; _this.canvas.nativeElement.height = dimensions.height; })); // subscribe to reposition events this.limitsService.repositionEvent.subscribe((/** * @param {?} positions * @return {?} */ function (positions) { if (positions.length === 4) { setTimeout((/** * @return {?} */ function () { _this.clearCanvas(); _this.sortPoints(); _this.drawShape(); }), 10); } })); }; /** * clears the shape canvas */ /** * clears the shape canvas * @private * @return {?} */ NgxShapeOutlineComponent.prototype.clearCanvas = /** * clears the shape canvas * @private * @return {?} */ function () { /** @type {?} */ var canvas = this.canvas.nativeElement; /** @type {?} */ var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, this.dimensions.width, this.dimensions.height); }; /** * sorts the array of points according to their clockwise alignment */ /** * sorts the array of points according to their clockwise alignment * @private * @return {?} */ NgxShapeOutlineComponent.prototype.sortPoints = /** * sorts the array of points according to their clockwise alignment * @private * @return {?} */ function () { var _this = this; /** @type {?} */ var _points = Array.from(this._points); /** @type {?} */ var sortedPoints = []; /** @type {?} */ var sortOrder = { vertical: ['top', 'top', 'bottom', 'bottom'], horizontal: ['left', 'right', 'right', 'left'] }; var _loop_1 = function (i) { /** @type {?} */ var roles = Array.from([sortOrder.vertical[i], sortOrder.horizontal[i]]); sortedPoints.push(_points.filter((/** * @param {?} point * @return {?} */ function (point) { return _this.limitsService.compareArray(point.roles, roles); }))[0]); }; for (var i = 0; i < 4; i++) { _loop_1(i); } this._sortedPoints = sortedPoints; }; /** * draws a line between the points according to their order */ /** * draws a line between the points according to their order * @private * @return {?} */ NgxShapeOutlineComponent.prototype.drawShape = /** * draws a line between the points according to their order * @private * @return {?} */ function () { var _this = this; /** @type {?} */ var canvas = this.canvas.nativeElement; /** @type {?} */ var ctx = canvas.getContext('2d'); ctx.lineWidth = this.weight; ctx.strokeStyle = this.color; ctx.beginPath(); this._sortedPoints.forEach((/** * @param {?} point * @param {?} index * @return {?} */ function (point, index) { if (index === 0) { ctx.moveTo(point.x, point.y); } if (index !== _this._sortedPoints.length - 1) { /** @type {?} */ var nextPoint = _this._sortedPoints[index + 1]; ctx.lineTo(nextPoint.x, nextPoint.y); } else { ctx.closePath(); } })); ctx.stroke(); }; NgxShapeOutlineComponent.decorators = [ { type: Component, args: [{ selector: 'ngx-shape-outine', template: "<canvas #outline\n style=\"position: absolute; z-index: 1000\"\n [ngStyle]=\"{width: dimensions.width + 'px', height: dimensions.height + 'px'}\"\n *ngIf=\"dimensions\">\n</canvas>\n" }] } ]; /** @nocollapse */ NgxShapeOutlineComponent.ctorParameters = function () { return [ { type: LimitsService } ]; }; NgxShapeOutlineComponent.propDecorators = { color: [{ type: Input }], weight: [{ type: Input }], dimensions: [{ type: Input }], canvas: [{ type: ViewChild, args: ['outline',] }] }; return NgxShapeOutlineComponent; }()); export { NgxShapeOutlineComponent }; if (false) { /** @type {?} */ NgxShapeOutlineComponent.prototype.color; /** @type {?} */ NgxShapeOutlineComponent.prototype.weight; /** @type {?} */ NgxShapeOutlineComponent.prototype.dimensions; /** @type {?} */ NgxShapeOutlineComponent.prototype.canvas; /** * @type {?} * @private */ NgxShapeOutlineComponent.prototype._points; /** * @type {?} * @private */ NgxShapeOutlineComponent.prototype._sortedPoints; /** * @type {?} * @private */ NgxShapeOutlineComponent.prototype.limitsService; } //# 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{AfterViewInit, Component, Input, ViewChild} from '@angular/core';\nimport {LimitsService, PointPositionChange} from '../../services/limits.service';\nimport {ImageDimensions} from '../../PublicModels';\n\n@Component({\n  selector: 'ngx-shape-outine',\n  templateUrl: './ngx-shape-outline.component.html',\n})\nexport class NgxShapeOutlineComponent implements AfterViewInit {\n\n  @Input() color = '#3cabe2';\n  @Input() weight: number;\n  @Input() dimensions: ImageDimensions;\n  @ViewChild('outline') canvas;\n\n  private _points: Array<PointPositionChange>;\n  private _sortedPoints: Array<PointPositionChange>;\n  constructor(private limitsService: LimitsService) {}\n\n  ngAfterViewInit() {\n    // init drawing canvas dimensions\n    this.canvas.nativeElement.width = this.dimensions.width;\n    this.canvas.nativeElement.height = this.dimensions.height;\n    this.limitsService.positions.subscribe(positions => {\n      if (positions.length === 4) {\n        this._points = positions;\n        this.sortPoints();\n        this.clearCanvas();\n        this.drawShape();\n      }\n    });\n    // subscribe to changes in the pane's dimensions\n    this.limitsService.paneDimensions.subscribe(dimensions => {\n      this.clearCanvas();\n      this.canvas.nativeElement.width = dimensions.width;\n      this.canvas.nativeElement.height = dimensions.height;\n    });\n    // subscribe to reposition events\n    this.limitsService.repositionEvent.subscribe( positions => {\n      if (positions.length === 4) {\n        setTimeout( () => {\n          this.clearCanvas();\n          this.sortPoints();\n          this.drawShape();\n        }, 10);\n      }\n    });\n  }\n\n  /**\n   * clears the shape canvas\n   */\n  private clearCanvas() {\n    const canvas = this.canvas.nativeElement;\n    const ctx = canvas.getContext('2d');\n    ctx.clearRect(0, 0, this.dimensions.width, this.dimensions.height);\n  }\n\n  /**\n   * sorts the array of points according to their clockwise alignment\n   */\n  private sortPoints() {\n    const _points = Array.from(this._points);\n    const sortedPoints = [];\n\n    const sortOrder = {\n      vertical: ['top', 'top', 'bottom', 'bottom'],\n      horizontal: ['left', 'right', 'right', 'left']\n    };\n\n    for (let i = 0; i < 4; i++) {\n      const roles = Array.from([sortOrder.vertical[i], sortOrder.horizontal[i]]);\n      sortedPoints.push(_points.filter((point) => {\n        return this.limitsService.compareArray(point.roles, roles);\n      })[0]);\n\n    }\n    this._sortedPoints = sortedPoints;\n  }\n\n  /**\n   * draws a line between the points according to their order\n   */\n  private drawShape() {\n    const canvas = this.canvas.nativeElement;\n    const ctx = canvas.getContext('2d');\n    ctx.lineWidth = this.weight;\n    ctx.strokeStyle = this.color;\n    ctx.beginPath();\n    this._sortedPoints.forEach((point, index) => {\n      if (index === 0) {\n        ctx.moveTo(point.x, point.y);\n      }\n      if (index !== this._sortedPoints.length - 1) {\n        const nextPoint = this._sortedPoints[index + 1];\n        ctx.lineTo(nextPoint.x, nextPoint.y);\n      } else {\n        ctx.closePath();\n      }\n    });\n    ctx.stroke();\n  }\n}\n\n\n"]}