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ng-zorro-antd

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An enterprise-class UI components based on Ant Design and Angular

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/** * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE */ import { DOCUMENT } from '@angular/common'; import { ChangeDetectionStrategy, Component, Inject, Input } from '@angular/core'; import { getPixelRatio, getStyleStr, reRendering, rotateWatermark } from './util'; import * as i0 from "@angular/core"; /** * Base size of the canvas, 1 for parallel layout and 2 for alternate layout * Only alternate layout is currently supported */ const BaseSize = 2; const FontGap = 3; export class NzWaterMarkComponent { constructor(el, document, cdr) { this.el = el; this.document = document; this.cdr = cdr; this.nzWidth = 120; this.nzHeight = 64; this.nzRotate = -22; this.nzZIndex = 9; this.nzImage = ''; this.nzContent = ''; this.nzFont = {}; this.nzGap = [100, 100]; this.nzOffset = [this.nzGap[0] / 2, this.nzGap[1] / 2]; this.waterMarkElement = this.document.createElement('div'); this.stopObservation = false; this.observer = new MutationObserver(mutations => { if (this.stopObservation) { return; } mutations.forEach(mutation => { if (reRendering(mutation, this.waterMarkElement)) { this.destroyWatermark(); this.renderWatermark(); } }); }); } ngOnInit() { this.observer.observe(this.el.nativeElement, { subtree: true, childList: true, attributeFilter: ['style', 'class'] }); } ngAfterViewInit() { this.renderWatermark(); } ngOnChanges(changes) { const { nzRotate, nzZIndex, nzWidth, nzHeight, nzImage, nzContent, nzFont, gapX, gapY, offsetLeft, offsetTop } = changes; if (nzRotate || nzZIndex || nzWidth || nzHeight || nzImage || nzContent || nzFont || gapX || gapY || offsetLeft || offsetTop) { this.renderWatermark(); } } getFont() { const font = { color: 'rgba(0,0,0,.15)', fontSize: 16, fontWeight: 'normal', fontFamily: 'sans-serif', fontStyle: 'normal' }; this.nzFont = { ...font, ...this.nzFont }; this.cdr.markForCheck(); } getMarkStyle() { const markStyle = { zIndex: this.nzZIndex, position: 'absolute', left: 0, top: 0, width: '100%', height: '100%', pointerEvents: 'none', backgroundRepeat: 'repeat', visibility: 'visible' }; /** Calculate the style of the nzOffset */ let positionLeft = (this.nzOffset?.[0] ?? this.nzGap[0] / 2) - this.nzGap[0] / 2; let positionTop = (this.nzOffset?.[1] ?? this.nzGap[1] / 2) - this.nzGap[1] / 2; if (positionLeft > 0) { markStyle.left = `${positionLeft}px`; markStyle.width = `calc(100% - ${positionLeft}px)`; positionLeft = 0; } if (positionTop > 0) { markStyle.top = `${positionTop}px`; markStyle.height = `calc(100% - ${positionTop}px)`; positionTop = 0; } markStyle.backgroundPosition = `${positionLeft}px ${positionTop}px`; return markStyle; } destroyWatermark() { if (this.waterMarkElement) { this.waterMarkElement.remove(); } } appendWatermark(base64Url, markWidth) { this.stopObservation = true; this.waterMarkElement.setAttribute('style', getStyleStr({ ...this.getMarkStyle(), backgroundImage: `url('${base64Url}')`, backgroundSize: `${(this.nzGap[0] + markWidth) * BaseSize}px` })); this.el.nativeElement.append(this.waterMarkElement); this.cdr.markForCheck(); // Delayed execution setTimeout(() => { this.stopObservation = false; this.cdr.markForCheck(); }); } getMarkSize(ctx) { let defaultWidth = 120; let defaultHeight = 64; if (!this.nzImage && ctx.measureText) { ctx.font = `${Number(this.nzFont.fontSize)}px ${this.nzFont.fontFamily}`; const contents = Array.isArray(this.nzContent) ? this.nzContent : [this.nzContent]; const widths = contents.map(item => ctx.measureText(item).width); defaultWidth = Math.ceil(Math.max(...widths)); defaultHeight = Number(this.nzFont.fontSize) * contents.length + (contents.length - 1) * FontGap; } return [this.nzWidth ?? defaultWidth, this.nzHeight ?? defaultHeight]; } fillTexts(ctx, drawX, drawY, drawWidth, drawHeight) { const ratio = getPixelRatio(); const mergedFontSize = Number(this.nzFont.fontSize) * ratio; ctx.font = `${this.nzFont.fontStyle} normal ${this.nzFont.fontWeight} ${mergedFontSize}px/${drawHeight}px ${this.nzFont.fontFamily}`; if (this.nzFont.color) ctx.fillStyle = this.nzFont.color; ctx.textAlign = 'center'; ctx.textBaseline = 'top'; ctx.translate(drawWidth / 2, 0); const contents = Array.isArray(this.nzContent) ? this.nzContent : [this.nzContent]; contents?.forEach((item, index) => { ctx.fillText(item ?? '', drawX, drawY + index * (mergedFontSize + FontGap * ratio)); }); } drawText(canvas, ctx, drawX, drawY, drawWidth, drawHeight, alternateRotateX, alternateRotateY, alternateDrawX, alternateDrawY, markWidth) { this.fillTexts(ctx, drawX, drawY, drawWidth, drawHeight); /** Fill the interleaved text after rotation */ ctx.restore(); rotateWatermark(ctx, alternateRotateX, alternateRotateY, this.nzRotate); this.fillTexts(ctx, alternateDrawX, alternateDrawY, drawWidth, drawHeight); this.appendWatermark(canvas.toDataURL(), markWidth); } renderWatermark() { if (!this.nzContent && !this.nzImage) { return; } const canvas = this.document.createElement('canvas'); const ctx = canvas.getContext('2d'); if (ctx) { if (!this.waterMarkElement) { this.waterMarkElement = this.document.createElement('div'); } this.getFont(); const ratio = getPixelRatio(); const [markWidth, markHeight] = this.getMarkSize(ctx); const canvasWidth = (this.nzGap[0] + markWidth) * ratio; const canvasHeight = (this.nzGap[1] + markHeight) * ratio; canvas.setAttribute('width', `${canvasWidth * BaseSize}px`); canvas.setAttribute('height', `${canvasHeight * BaseSize}px`); const drawX = (this.nzGap[0] * ratio) / 2; const drawY = (this.nzGap[1] * ratio) / 2; const drawWidth = markWidth * ratio; const drawHeight = markHeight * ratio; const rotateX = (drawWidth + this.nzGap[0] * ratio) / 2; const rotateY = (drawHeight + this.nzGap[1] * ratio) / 2; /** Alternate drawing parameters */ const alternateDrawX = drawX + canvasWidth; const alternateDrawY = drawY + canvasHeight; const alternateRotateX = rotateX + canvasWidth; const alternateRotateY = rotateY + canvasHeight; ctx.save(); rotateWatermark(ctx, rotateX, rotateY, this.nzRotate); if (this.nzImage) { const img = new Image(); img.onload = () => { ctx.drawImage(img, drawX, drawY, drawWidth, drawHeight); /** Draw interleaved pictures after rotation */ ctx.restore(); rotateWatermark(ctx, alternateRotateX, alternateRotateY, this.nzRotate); ctx.drawImage(img, alternateDrawX, alternateDrawY, drawWidth, drawHeight); this.appendWatermark(canvas.toDataURL(), markWidth); }; img.onerror = () => this.drawText(canvas, ctx, drawX, drawY, drawWidth, drawHeight, alternateRotateX, alternateRotateY, alternateDrawX, alternateDrawY, markWidth); img.crossOrigin = 'anonymous'; img.referrerPolicy = 'no-referrer'; img.src = this.nzImage; } else { this.drawText(canvas, ctx, drawX, drawY, drawWidth, drawHeight, alternateRotateX, alternateRotateY, alternateDrawX, alternateDrawY, markWidth); } } } ngOnDestroy() { this.observer.disconnect(); } static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.4", ngImport: i0, type: NzWaterMarkComponent, deps: [{ token: i0.ElementRef }, { token: DOCUMENT }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component }); } static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "17.3.4", type: NzWaterMarkComponent, isStandalone: true, selector: "nz-water-mark", inputs: { nzWidth: "nzWidth", nzHeight: "nzHeight", nzRotate: "nzRotate", nzZIndex: "nzZIndex", nzImage: "nzImage", nzContent: "nzContent", nzFont: "nzFont", nzGap: "nzGap", nzOffset: "nzOffset" }, host: { classAttribute: "ant-water-mark" }, exportAs: ["NzWaterMark"], usesOnChanges: true, ngImport: i0, template: ` <ng-content></ng-content> `, isInline: true, changeDetection: i0.ChangeDetectionStrategy.OnPush }); } } i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.4", ngImport: i0, type: NzWaterMarkComponent, decorators: [{ type: Component, args: [{ selector: 'nz-water-mark', standalone: true, exportAs: 'NzWaterMark', changeDetection: ChangeDetectionStrategy.OnPush, template: ` <ng-content></ng-content> `, host: { class: 'ant-water-mark' } }] }], ctorParameters: () => [{ type: i0.ElementRef }, { type: Document, decorators: [{ type: Inject, args: [DOCUMENT] }] }, { type: i0.ChangeDetectorRef }], propDecorators: { nzWidth: [{ type: Input }], nzHeight: [{ type: Input }], nzRotate: [{ type: Input }], nzZIndex: [{ type: Input }], nzImage: [{ type: Input }], nzContent: [{ type: Input }], nzFont: [{ type: Input }], nzGap: [{ type: Input }], nzOffset: [{ type: Input }] } }); //# 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* Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { DOCUMENT } from '@angular/common';\nimport {\n  AfterViewInit,\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  ElementRef,\n  Inject,\n  Input,\n  OnChanges,\n  OnDestroy,\n  OnInit,\n  SimpleChanges\n} from '@angular/core';\n\nimport { MarkStyleType, FontType } from './typings';\nimport { getPixelRatio, getStyleStr, reRendering, rotateWatermark } from './util';\n\n/**\n * Base size of the canvas, 1 for parallel layout and 2 for alternate layout\n * Only alternate layout is currently supported\n */\nconst BaseSize = 2;\nconst FontGap = 3;\n\n@Component({\n  selector: 'nz-water-mark',\n  standalone: true,\n  exportAs: 'NzWaterMark',\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  template: ` <ng-content></ng-content> `,\n  host: {\n    class: 'ant-water-mark'\n  }\n})\nexport class NzWaterMarkComponent implements AfterViewInit, OnInit, OnChanges, OnDestroy {\n  @Input() nzWidth: number = 120;\n  @Input() nzHeight: number = 64;\n  @Input() nzRotate: number = -22;\n  @Input() nzZIndex: number = 9;\n  @Input() nzImage: string = '';\n  @Input() nzContent: string | string[] = '';\n  @Input() nzFont: FontType = {};\n  @Input() nzGap: [number, number] = [100, 100];\n  @Input() nzOffset: [number, number] = [this.nzGap[0] / 2, this.nzGap[1] / 2];\n\n  waterMarkElement: HTMLDivElement = this.document.createElement('div');\n  stopObservation: boolean = false;\n\n  observer = new MutationObserver(mutations => {\n    if (this.stopObservation) {\n      return;\n    }\n    mutations.forEach(mutation => {\n      if (reRendering(mutation, this.waterMarkElement)) {\n        this.destroyWatermark();\n        this.renderWatermark();\n      }\n    });\n  });\n\n  constructor(\n    private el: ElementRef,\n    @Inject(DOCUMENT) private document: Document,\n    private cdr: ChangeDetectorRef\n  ) {}\n\n  ngOnInit(): void {\n    this.observer.observe(this.el.nativeElement, {\n      subtree: true,\n      childList: true,\n      attributeFilter: ['style', 'class']\n    });\n  }\n\n  ngAfterViewInit(): void {\n    this.renderWatermark();\n  }\n\n  ngOnChanges(changes: SimpleChanges): void {\n    const { nzRotate, nzZIndex, nzWidth, nzHeight, nzImage, nzContent, nzFont, gapX, gapY, offsetLeft, offsetTop } =\n      changes;\n\n    if (\n      nzRotate ||\n      nzZIndex ||\n      nzWidth ||\n      nzHeight ||\n      nzImage ||\n      nzContent ||\n      nzFont ||\n      gapX ||\n      gapY ||\n      offsetLeft ||\n      offsetTop\n    ) {\n      this.renderWatermark();\n    }\n  }\n\n  getFont(): void {\n    const font: FontType = {\n      color: 'rgba(0,0,0,.15)',\n      fontSize: 16,\n      fontWeight: 'normal',\n      fontFamily: 'sans-serif',\n      fontStyle: 'normal'\n    };\n\n    this.nzFont = { ...font, ...this.nzFont };\n    this.cdr.markForCheck();\n  }\n\n  getMarkStyle(): MarkStyleType {\n    const markStyle: MarkStyleType = {\n      zIndex: this.nzZIndex,\n      position: 'absolute',\n      left: 0,\n      top: 0,\n      width: '100%',\n      height: '100%',\n      pointerEvents: 'none',\n      backgroundRepeat: 'repeat',\n      visibility: 'visible'\n    };\n\n    /** Calculate the style of the nzOffset */\n    let positionLeft = (this.nzOffset?.[0] ?? this.nzGap[0] / 2) - this.nzGap[0] / 2;\n    let positionTop = (this.nzOffset?.[1] ?? this.nzGap[1] / 2) - this.nzGap[1] / 2;\n    if (positionLeft > 0) {\n      markStyle.left = `${positionLeft}px`;\n      markStyle.width = `calc(100% - ${positionLeft}px)`;\n      positionLeft = 0;\n    }\n    if (positionTop > 0) {\n      markStyle.top = `${positionTop}px`;\n      markStyle.height = `calc(100% - ${positionTop}px)`;\n      positionTop = 0;\n    }\n    markStyle.backgroundPosition = `${positionLeft}px ${positionTop}px`;\n\n    return markStyle;\n  }\n\n  destroyWatermark(): void {\n    if (this.waterMarkElement) {\n      this.waterMarkElement.remove();\n    }\n  }\n\n  appendWatermark(base64Url: string, markWidth: number): void {\n    this.stopObservation = true;\n    this.waterMarkElement.setAttribute(\n      'style',\n      getStyleStr({\n        ...this.getMarkStyle(),\n        backgroundImage: `url('${base64Url}')`,\n        backgroundSize: `${(this.nzGap[0] + markWidth) * BaseSize}px`\n      })\n    );\n    this.el.nativeElement.append(this.waterMarkElement);\n    this.cdr.markForCheck();\n\n    // Delayed execution\n    setTimeout(() => {\n      this.stopObservation = false;\n      this.cdr.markForCheck();\n    });\n  }\n\n  getMarkSize(ctx: CanvasRenderingContext2D): [number, number] {\n    let defaultWidth = 120;\n    let defaultHeight = 64;\n    if (!this.nzImage && ctx.measureText) {\n      ctx.font = `${Number(this.nzFont.fontSize)}px ${this.nzFont.fontFamily}`;\n      const contents = Array.isArray(this.nzContent) ? this.nzContent : [this.nzContent];\n      const widths = contents.map(item => ctx.measureText(item!).width);\n      defaultWidth = Math.ceil(Math.max(...widths));\n      defaultHeight = Number(this.nzFont.fontSize) * contents.length + (contents.length - 1) * FontGap;\n    }\n    return [this.nzWidth ?? defaultWidth, this.nzHeight ?? defaultHeight];\n  }\n\n  fillTexts(ctx: CanvasRenderingContext2D, drawX: number, drawY: number, drawWidth: number, drawHeight: number): void {\n    const ratio = getPixelRatio();\n    const mergedFontSize = Number(this.nzFont.fontSize) * ratio;\n    ctx.font = `${this.nzFont.fontStyle} normal ${this.nzFont.fontWeight} ${mergedFontSize}px/${drawHeight}px ${this.nzFont.fontFamily}`;\n    if (this.nzFont.color) ctx.fillStyle = this.nzFont.color;\n    ctx.textAlign = 'center';\n    ctx.textBaseline = 'top';\n    ctx.translate(drawWidth / 2, 0);\n    const contents = Array.isArray(this.nzContent) ? this.nzContent : [this.nzContent];\n    contents?.forEach((item, index) => {\n      ctx.fillText(item ?? '', drawX, drawY + index * (mergedFontSize + FontGap * ratio));\n    });\n  }\n\n  drawText(\n    canvas: HTMLCanvasElement,\n    ctx: CanvasRenderingContext2D,\n    drawX: number,\n    drawY: number,\n    drawWidth: number,\n    drawHeight: number,\n    alternateRotateX: number,\n    alternateRotateY: number,\n    alternateDrawX: number,\n    alternateDrawY: number,\n    markWidth: number\n  ): void {\n    this.fillTexts(ctx, drawX, drawY, drawWidth, drawHeight);\n\n    /** Fill the interleaved text after rotation */\n    ctx.restore();\n    rotateWatermark(ctx, alternateRotateX, alternateRotateY, this.nzRotate);\n    this.fillTexts(ctx, alternateDrawX, alternateDrawY, drawWidth, drawHeight);\n    this.appendWatermark(canvas.toDataURL(), markWidth);\n  }\n\n  renderWatermark(): void {\n    if (!this.nzContent && !this.nzImage) {\n      return;\n    }\n    const canvas: HTMLCanvasElement = this.document.createElement('canvas');\n    const ctx = canvas.getContext('2d') as CanvasRenderingContext2D;\n\n    if (ctx) {\n      if (!this.waterMarkElement) {\n        this.waterMarkElement = this.document.createElement('div');\n      }\n      this.getFont();\n      const ratio = getPixelRatio();\n      const [markWidth, markHeight] = this.getMarkSize(ctx);\n      const canvasWidth = (this.nzGap[0] + markWidth) * ratio;\n      const canvasHeight = (this.nzGap[1] + markHeight) * ratio;\n      canvas.setAttribute('width', `${canvasWidth * BaseSize}px`);\n      canvas.setAttribute('height', `${canvasHeight * BaseSize}px`);\n\n      const drawX = (this.nzGap[0] * ratio) / 2;\n      const drawY = (this.nzGap[1] * ratio) / 2;\n      const drawWidth = markWidth * ratio;\n      const drawHeight = markHeight * ratio;\n      const rotateX = (drawWidth + this.nzGap[0] * ratio) / 2;\n      const rotateY = (drawHeight + this.nzGap[1] * ratio) / 2;\n\n      /** Alternate drawing parameters */\n      const alternateDrawX = drawX + canvasWidth;\n      const alternateDrawY = drawY + canvasHeight;\n      const alternateRotateX = rotateX + canvasWidth;\n      const alternateRotateY = rotateY + canvasHeight;\n\n      ctx.save();\n      rotateWatermark(ctx, rotateX, rotateY, this.nzRotate);\n\n      if (this.nzImage) {\n        const img = new Image();\n        img.onload = () => {\n          ctx.drawImage(img, drawX, drawY, drawWidth, drawHeight);\n\n          /** Draw interleaved pictures after rotation */\n          ctx.restore();\n          rotateWatermark(ctx, alternateRotateX, alternateRotateY, this.nzRotate);\n          ctx.drawImage(img, alternateDrawX, alternateDrawY, drawWidth, drawHeight);\n          this.appendWatermark(canvas.toDataURL(), markWidth);\n        };\n        img.onerror = () =>\n          this.drawText(\n            canvas,\n            ctx,\n            drawX,\n            drawY,\n            drawWidth,\n            drawHeight,\n            alternateRotateX,\n            alternateRotateY,\n            alternateDrawX,\n            alternateDrawY,\n            markWidth\n          );\n        img.crossOrigin = 'anonymous';\n        img.referrerPolicy = 'no-referrer';\n        img.src = this.nzImage;\n      } else {\n        this.drawText(\n          canvas,\n          ctx,\n          drawX,\n          drawY,\n          drawWidth,\n          drawHeight,\n          alternateRotateX,\n          alternateRotateY,\n          alternateDrawX,\n          alternateDrawY,\n          markWidth\n        );\n      }\n    }\n  }\n\n  ngOnDestroy(): void {\n    this.observer.disconnect();\n  }\n}\n"]}