d589ffc2-a06b-47b9-9dc7-0e8686fc33a0

Committed 07 May 2025 02:28AM UTC coverage: 90.272%. Remained the same

Build # d589ffc2-a06b-47b9-9dc7-0e8686fc33a0

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push

circleci

Committed by

web-flow

Commit Message

feat(image): support i18n for image (#3386)

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5617 of 6882 branches covered (81.62%)

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81.36

/src/image/preview/image-preview.component.ts

import { CdkDrag } from '@angular/cdk/drag-drop';

import {
    ChangeDetectionStrategy,
    ChangeDetectorRef,
    Component,
    DestroyRef,
    ElementRef,
    EventEmitter,
    NgZone,
    OnInit,
    Output,
    Signal,
    ViewChild,
    ViewEncapsulation,
    inject
} from '@angular/core';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
import { DomSanitizer } from '@angular/platform-browser';
import { ThyAction, ThyActions } from 'ngx-tethys/action';
import { ThyCopyDirective, ThyCopyEvent } from 'ngx-tethys/copy';
import { ThyDialog } from 'ngx-tethys/dialog';
import { ThyDivider } from 'ngx-tethys/divider';
import { ThyFullscreen } from 'ngx-tethys/fullscreen';
import { ThyIcon } from 'ngx-tethys/icon';
import { ThyLoading } from 'ngx-tethys/loading';
import { ThyNotifyService } from 'ngx-tethys/notify';
import { ThyTooltipDirective } from 'ngx-tethys/tooltip';
import { getClientSize, getFitContentPosition, getOffset, helpers, humanizeBytes, isNumber, isUndefinedOrNull } from 'ngx-tethys/util';
import { Observable, fromEvent } from 'rxjs';
import { InternalImageInfo, ThyImageInfo, ThyImagePreviewMode, ThyImagePreviewOperation, ThyImagePreviewOptions } from '../image.class';
import { fetchImageBlob } from '../utils';
import { injectLocale, ThyImageLocale } from 'ngx-tethys/i18n';

const initialPosition = {
    x: 0,
    y: 0
};
const IMAGE_MAX_ZOOM = 3;
const IMAGE_MIN_ZOOM = 0.1;
const HORIZONTAL_SPACE = 100 * 2; // left: 100px; right: 100px
const VERTICAL_SPACE = 96 + 106; // top: 96px; bottom: 106px

/**
 * 图片预览组件
 * @name thy-image-preview
 * @order 20
 */
@Component({
    selector: 'thy-image-preview',
    exportAs: 'thyImagePreview',
    templateUrl: './image-preview.component.html',
    changeDetection: ChangeDetectionStrategy.OnPush,
    encapsulation: ViewEncapsulation.None,
    host: {
        class: 'thy-image-preview-wrap',
        '[class.thy-image-preview-moving]': 'isDragging'
    },
    imports: [ThyTooltipDirective, ThyAction, CdkDrag, ThyLoading, ThyIcon, ThyActions, ThyDivider, ThyCopyDirective]
})
export class ThyImagePreview implements OnInit {
    thyDialog = inject(ThyDialog);
    thyFullscreen = inject(ThyFullscreen);
    private cdr = inject(ChangeDetectorRef);
    private ngZone = inject(NgZone);
    private notifyService = inject(ThyNotifyService);
    private host = inject<ElementRef<HTMLElement>>(ElementRef);
    private sanitizer = inject(DomSanitizer);
    private locale: Signal<ThyImageLocale> = injectLocale('image');

    @Output() downloadClicked: EventEmitter<ThyImageInfo> = new EventEmitter();

    private readonly destroyRef = inject(DestroyRef);

    images: InternalImageInfo[] = [];
    previewIndex: number = 0;
    previewConfig: ThyImagePreviewOptions;
    previewImageTransform = '';
    previewImageWrapperTransform = '';
    zoomDisabled = false;
    zoom: number = 1;
    position = { ...initialPosition };
    isDragging = false;
    isLoadingDone = false;
    isFullScreen = false;
    isInsideScreen = true;
    currentImageMode: ThyImagePreviewMode = 'original-scale';
    previewOperations: ThyImagePreviewOperation[];
    defaultPreviewOperations: ThyImagePreviewOperation[] = [
        {
            icon: 'zoom-out',
            name: this.locale().zoomOut,
            action: (image: ThyImageInfo) => {
                this.zoomOut();
            },
            type: 'zoom-out'
        },
        {
            icon: 'zoom-in',
            name: this.locale().zoomIn,
            action: (image: ThyImageInfo) => {
                this.zoomIn();
            },
            type: 'zoom-in'
        },
        {
            icon: 'one-to-one',
            name: this.locale().originalSize,
            action: (image: ThyImageInfo) => {
                this.setOriginalSize();
            },
            type: 'original-scale'
        },
        {
            icon: 'max-view',
            name: this.locale().fitToScreen,
            action: () => {
                this.setFitScreen();
            },
            type: 'fit-screen'
        },
        {
            icon: 'expand-arrows',
            name: this.locale().fullScreen,
            action: () => {
                this.fullScreen();
            },
            type: 'full-screen'
        },
        {
            icon: 'rotate-right',
            name: this.locale().spin,
            action: (image: ThyImageInfo) => {
                this.rotateRight();
            },
            type: 'rotate-right'
        },
        {
            icon: 'download',
            name: this.locale().download,
            action: (image: ThyImageInfo) => {
                this.download(image);
            },
            type: 'download'
        },
        {
            icon: 'preview',
            name: this.locale().viewOriginal,
            action: () => {
                this.viewOriginal();
            },
            type: 'view-original'
        },
        {
            icon: 'link-insert',
            name: this.locale().copyLink,
            type: 'copyLink'
        }
    ];

    private rotate: number;

    get previewImage(): InternalImageInfo {
        const image = this.images[this.previewIndex];
        if (image.size) {
            image.size = isNumber(image.size) ? humanizeBytes(image.size) : image.size;
        }
        return image;
    }

    get previewImageOriginSrc() {
        let imageSrc = this.previewImage.origin?.src || this.previewImage.src;
        if (imageSrc.startsWith('./')) {
            return window.location.host + '/' + imageSrc.split('./')[1];
        }
        return imageSrc;
    }

    get defaultZoom(): number {
        if (this.previewConfig?.zoom && this.previewConfig?.zoom > 0) {
            return this.previewConfig.zoom >= IMAGE_MAX_ZOOM
                ? IMAGE_MAX_ZOOM
                : this.previewConfig.zoom <= IMAGE_MIN_ZOOM
                  ? IMAGE_MIN_ZOOM
                  : this.previewConfig.zoom;
        }
    }

    @ViewChild('imgRef', { static: false }) imageRef!: ElementRef<HTMLImageElement>;
    @ViewChild('imagePreviewWrapper', { static: true }) imagePreviewWrapper!: ElementRef<HTMLElement>;

    ngOnInit(): void {
        this.initPreview();
        this.ngZone.runOutsideAngular(() => {
            fromEvent(this.host.nativeElement, 'click')
                .pipe(takeUntilDestroyed(this.destroyRef))
                .subscribe(event => {
                    if (
                        (event.target === event.currentTarget ||
                            (this.isInsideScreen && this.imagePreviewWrapper.nativeElement.contains(event.target as HTMLElement))) &&
                        !this.previewConfig?.disableClose
                    ) {
                        this.ngZone.run(() => !this.isFullScreen && this.thyDialog.close());
                    }
                });

            fromEvent(this.imagePreviewWrapper.nativeElement, 'mousedown')
                .pipe(takeUntilDestroyed(this.destroyRef))
                .subscribe(() => {
                    this.isDragging = !this.isInsideScreen && true;
                });
        });
    }

    setOriginalSize() {
        this.reset();
        this.currentImageMode = 'fit-screen';
        this.zoom = 1;
        this.updatePreviewImageTransform();
        this.calculateInsideScreen();
        this.isLoadingDone = true;
        this.cdr.detectChanges();
    }

    setFitScreen() {
        this.reset();
        this.isInsideScreen = true;
        this.updatePreviewImage();
    }

    useDefaultZoomUpdate(isUpdateImageWrapper: boolean) {
        this.zoom = this.defaultZoom;
        this.isLoadingDone = true;
        this.updatePreviewImageTransform();
        if (isUpdateImageWrapper) {
            this.updatePreviewImageWrapperTransform();
        }
        this.cdr.detectChanges();
    }

    useCalculateZoomUpdate(isUpdateImageWrapper?: boolean) {
        let img = new Image();
        img.src = this.previewImage.src;
        img.onload = () => {
            const { width: offsetWidth, height: offsetHeight } = getClientSize();
            const innerWidth = offsetWidth - HORIZONTAL_SPACE;
            const innerHeight = offsetHeight - VERTICAL_SPACE;
            const { naturalWidth, naturalHeight } = img;
            const xRatio = innerWidth / naturalWidth;
            const yRatio = innerHeight / naturalHeight;
            const zoom = Math.min(xRatio, yRatio);
            if (zoom > 1) {
                this.zoom = 1;
            } else {
                this.zoom = zoom;
            }
            this.isLoadingDone = true;
            this.updatePreviewImageTransform();
            if (isUpdateImageWrapper) {
                this.updatePreviewImageWrapperTransform();
            }
            this.cdr.detectChanges();
        };
    }

    updatePreviewImage() {
        this.resolvePreviewImage().subscribe(result => {
            if (!result) {
                // error
                this.isLoadingDone = true;
                return;
            }
            // image size
            if (!this.previewImage.size && this.previewImage.blob) {
                this.previewImage.size = humanizeBytes(this.previewImage.blob.size);
            }
            if (this.defaultZoom) {
                this.useDefaultZoomUpdate(true);
            } else {
                this.useCalculateZoomUpdate();
            }
        });
    }

    resolvePreviewImage() {
        return new Observable<Boolean>(subscriber => {
            if (this.previewImage.src.startsWith('blob:')) {
                this.previewImage.objectURL = this.sanitizer.bypassSecurityTrustUrl(this.previewImage.src);
                subscriber.next(true);
                subscriber.complete();
                return;
            }
            if (this.previewImage.objectURL || !this.previewConfig.resolveSize) {
                subscriber.next(true);
                subscriber.complete();
            } else {
                fetchImageBlob(this.previewImage.src).subscribe(
                    blob => {
                        const urlCreator = window.URL || window.webkitURL;
                        const objectURL = urlCreator.createObjectURL(blob);
                        this.previewImage.objectURL = this.sanitizer.bypassSecurityTrustUrl(objectURL);
                        this.previewImage.blob = blob;
                        subscriber.next(true);
                        subscriber.complete();
                    },
                    error => {
                        subscriber.next(false);
                        subscriber.complete();
                    }
                );
            }
        });
    }

    initPreview() {
        if (Array.isArray(this.previewConfig?.operations) && this.previewConfig?.operations.length) {
            const defaultOperationsMap = helpers.keyBy(this.defaultPreviewOperations, 'type');
            this.previewOperations = this.previewConfig?.operations.map(operation => {
                if (helpers.isString(operation) && defaultOperationsMap[operation]) {
                    return defaultOperationsMap[operation];
                } else {
                    return operation as ThyImagePreviewOperation;
                }
            });
        } else {
            this.previewOperations = this.defaultPreviewOperations;
        }
        this.rotate = this.previewConfig?.rotate ?? 0;
        this.updatePreviewImage();
    }

    download(image: ThyImageInfo) {
        this.downloadClicked.emit(image);
        const src = image.origin?.src || image.src;
        fetchImageBlob(src)
            .pipe(takeUntilDestroyed(this.destroyRef))
            .subscribe(blob => {
                const urlCreator = window.URL || window.webkitURL;
                const objectURL = urlCreator.createObjectURL(blob);
                let a = document.createElement('a');
                a.download = image.name || 'default.png';
                a.href = objectURL;
                a.click();
            });
    }

    zoomIn(): void {
        if (this.zoom < IMAGE_MAX_ZOOM) {
            this.zoom = Math.min(this.zoom + 0.1, IMAGE_MAX_ZOOM);
            this.calculateInsideScreen();
            this.updatePreviewImageTransform();
            this.position = { ...initialPosition };
        }
    }

    zoomOut(): void {
        if (this.zoom > IMAGE_MIN_ZOOM) {
            this.zoom = Math.max(this.zoom - 0.1, IMAGE_MIN_ZOOM);
            this.calculateInsideScreen();
            this.updatePreviewImageTransform();
            this.position = { ...initialPosition };
        }
    }

    calculateInsideScreen() {
        const width = this.imageRef.nativeElement.offsetWidth * this.zoom;
        const height = this.imageRef.nativeElement.offsetHeight * this.zoom;
        const { width: clientWidth, height: clientHeight } = getClientSize();
        if (width >= clientWidth || height >= clientHeight) {
            this.isInsideScreen = false;
        } else {
            this.isInsideScreen = true;
        }
    }

    viewOriginal() {
        window.open(this.previewImage?.origin?.src || this.previewImage.src, '_blank');
    }

    rotateRight(): void {
        this.rotate += 90;
        this.updatePreviewImageTransform();
    }

    fullScreen(): void {
        const targetElement = this.host.nativeElement.querySelector('.thy-image-preview');
        this.isFullScreen = true;
        const fullscreenRef = this.thyFullscreen.launch({
            target: targetElement
        });
        fullscreenRef.afterExited().subscribe(() => {
            this.isFullScreen = false;
            this.cdr.markForCheck();
        });
    }

    copyLink(event: ThyCopyEvent) {
        if (event.isSuccess) {
            this.notifyService.success('复制图片地址成功');
        } else {
            this.notifyService.error('复制图片地址失败');
        }
    }

    prev() {
        if (this.previewIndex > 0) {
            this.previewIndex--;
            this.isLoadingDone = false;
            this.reset();
            this.updatePreviewImage();
        }
    }

    next() {
        if (this.previewIndex < this.images.length - 1) {
            this.previewIndex++;
            this.isLoadingDone = false;
            this.reset();
            this.updatePreviewImage();
        }
    }

    dragReleased() {
        this.isDragging = false;
        const width = this.imageRef.nativeElement.offsetWidth * this.zoom;
        const height = this.imageRef.nativeElement.offsetHeight * this.zoom;
        const { left, top } = getOffset(this.imageRef.nativeElement, window);
        const { width: clientWidth, height: clientHeight } = getClientSize();
        const isRotate = this.rotate % 180 !== 0;
        const fitContentParams = {
            width: isRotate ? height : width,
            height: isRotate ? width : height,
            left,
            top,
            clientWidth,
            clientHeight
        };
        const fitContentPos = getFitContentPosition(fitContentParams);
        if (!isUndefinedOrNull(fitContentPos.x) || !isUndefinedOrNull(fitContentPos.y)) {
            this.position = { ...this.position, ...fitContentPos };
        }
    }

    private reset(): void {
        this.currentImageMode = 'original-scale';
        this.rotate = this.previewConfig?.rotate ?? 0;
        this.position = { ...initialPosition };
        this.cdr.detectChanges();
    }

    private updatePreviewImageTransform(): void {
        this.previewImageTransform = `scale3d(${this.zoom}, ${this.zoom}, 1) rotate(${this.rotate}deg)`;
    }

    private updatePreviewImageWrapperTransform(): void {
        this.previewImageWrapperTransform = `translate3d(${this.position.x}px, ${this.position.y}px, 0)`;
    }
}

1	import { CdkDrag } from '@angular/cdk/drag-drop';
2
3	import {
4	ChangeDetectionStrategy,
5	ChangeDetectorRef,
6	Component,
7	DestroyRef,
8	ElementRef,
9	EventEmitter,
10	NgZone,
11	OnInit,
12	Output,
13	Signal,
14	ViewChild,
15	ViewEncapsulation,
16	inject
17	} from '@angular/core';
18	import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
19	import { DomSanitizer } from '@angular/platform-browser';
20	import { ThyAction, ThyActions } from 'ngx-tethys/action';	1✔
21	import { ThyCopyDirective, ThyCopyEvent } from 'ngx-tethys/copy';
22	import { ThyDialog } from 'ngx-tethys/dialog';
23	import { ThyDivider } from 'ngx-tethys/divider';
24	import { ThyFullscreen } from 'ngx-tethys/fullscreen';	1✔
25	import { ThyIcon } from 'ngx-tethys/icon';	1✔
26	import { ThyLoading } from 'ngx-tethys/loading';	1✔
27	import { ThyNotifyService } from 'ngx-tethys/notify';	1✔
28	import { ThyTooltipDirective } from 'ngx-tethys/tooltip';
29	import { getClientSize, getFitContentPosition, getOffset, helpers, humanizeBytes, isNumber, isUndefinedOrNull } from 'ngx-tethys/util';
30	import { Observable, fromEvent } from 'rxjs';
31	import { InternalImageInfo, ThyImageInfo, ThyImagePreviewMode, ThyImagePreviewOperation, ThyImagePreviewOptions } from '../image.class';
32	import { fetchImageBlob } from '../utils';
33	import { injectLocale, ThyImageLocale } from 'ngx-tethys/i18n';	1✔
34
35	const initialPosition = {	18✔
36	x: 0,	18✔
37	y: 0	18✔
38	};	18✔
39	const IMAGE_MAX_ZOOM = 3;	18✔
40	const IMAGE_MIN_ZOOM = 0.1;	18✔
41	const HORIZONTAL_SPACE = 100 * 2; // left: 100px; right: 100px	18✔
42	const VERTICAL_SPACE = 96 + 106; // top: 96px; bottom: 106px	18✔
43		18✔
44	/**	18✔
45	* 图片预览组件	18✔
46	* @name thy-image-preview	18✔
47	* @order 20	18✔
48	*/	18✔
49	@Component({	18✔
50	selector: 'thy-image-preview',	18✔
51	exportAs: 'thyImagePreview',	18✔
52	templateUrl: './image-preview.component.html',	18✔
53	changeDetection: ChangeDetectionStrategy.OnPush,	18✔
54	encapsulation: ViewEncapsulation.None,	18✔
55	host: {	18✔
56	class: 'thy-image-preview-wrap',	18✔
57	'[class.thy-image-preview-moving]': 'isDragging'	18✔
58	},
59	imports: [ThyTooltipDirective, ThyAction, CdkDrag, ThyLoading, ThyIcon, ThyActions, ThyDivider, ThyCopyDirective]
60	})
61	export class ThyImagePreview implements OnInit {
62	thyDialog = inject(ThyDialog);	2✔
63	thyFullscreen = inject(ThyFullscreen);
64	private cdr = inject(ChangeDetectorRef);
65	private ngZone = inject(NgZone);
66	private notifyService = inject(ThyNotifyService);
67	private host = inject<ElementRef<HTMLElement>>(ElementRef);
68	private sanitizer = inject(DomSanitizer);
69	private locale: Signal<ThyImageLocale> = injectLocale('image');
70		2✔
71	@Output() downloadClicked: EventEmitter<ThyImageInfo> = new EventEmitter();
72
73	private readonly destroyRef = inject(DestroyRef);
74
75	images: InternalImageInfo[] = [];
76	previewIndex: number = 0;
77	previewConfig: ThyImagePreviewOptions;
78	previewImageTransform = '';	1✔
79	previewImageWrapperTransform = '';
80	zoomDisabled = false;
81	zoom: number = 1;
82	position = { ...initialPosition };
83	isDragging = false;
84	isLoadingDone = false;
85	isFullScreen = false;
86	isInsideScreen = true;	1✔
87	currentImageMode: ThyImagePreviewMode = 'original-scale';
88	previewOperations: ThyImagePreviewOperation[];
89	defaultPreviewOperations: ThyImagePreviewOperation[] = [
90	{
91	icon: 'zoom-out',
92	name: this.locale().zoomOut,
93	action: (image: ThyImageInfo) => {
94	this.zoomOut();	1✔
95	},
96	type: 'zoom-out'
97	},
98	{
99	icon: 'zoom-in',
100	name: this.locale().zoomIn,
101	action: (image: ThyImageInfo) => {
102	this.zoomIn();	1✔
103	},
104	type: 'zoom-in'
105	},
106	{
107	icon: 'one-to-one',
108	name: this.locale().originalSize,
109	action: (image: ThyImageInfo) => {
110	this.setOriginalSize();	2✔
111	},
112	type: 'original-scale'
113	},
114	{
115	icon: 'max-view',
116	name: this.locale().fitToScreen,
117	action: () => {
118	this.setFitScreen();	1✔
119	},
120	type: 'fit-screen'
121	},
122	{
123	icon: 'expand-arrows',
124	name: this.locale().fullScreen,
125	action: () => {
126	this.fullScreen();
127	},
128	type: 'full-screen'
129	},
130	{	503✔
131	icon: 'rotate-right',	503✔
132	name: this.locale().spin,	487!
133	action: (image: ThyImageInfo) => {
134	this.rotateRight();	503✔
135	},
136	type: 'rotate-right'
137	},	38✔
138	{	38!
UNCOV 139	icon: 'download',	×
140	name: this.locale().download,
141	action: (image: ThyImageInfo) => {	38✔
142	this.download(image);
143	},
144	type: 'download'	26✔
145	},	10!
146	{
147	icon: 'preview',	10!
148	name: this.locale().viewOriginal,
149	action: () => {
150	this.viewOriginal();
151	},
152	type: 'view-original'
153	},	18✔
154	{	18✔
155	icon: 'link-insert',	18✔
156	name: this.locale().copyLink,
157	type: 'copyLink'
158	}	17✔
159	];
160
161	private rotate: number;	2✔
162
163	get previewImage(): InternalImageInfo {
164	const image = this.images[this.previewIndex];	18✔
165	if (image.size) {
166	image.size = isNumber(image.size) ? humanizeBytes(image.size) : image.size;
UNCOV 167	}	×
168	return image;
169	}
170
171	get previewImageOriginSrc() {
172	let imageSrc = this.previewImage.origin?.src \|\| this.previewImage.src;	1✔
173	if (imageSrc.startsWith('./')) {	1✔
174	return window.location.host + '/' + imageSrc.split('./')[1];	1✔
175	}	1✔
176	return imageSrc;	1✔
177	}	1✔
178		1✔
179	get defaultZoom(): number {
180	if (this.previewConfig?.zoom && this.previewConfig?.zoom > 0) {
181	return this.previewConfig.zoom >= IMAGE_MAX_ZOOM	1✔
182	? IMAGE_MAX_ZOOM	1✔
183	: this.previewConfig.zoom <= IMAGE_MIN_ZOOM	1✔
184	? IMAGE_MIN_ZOOM
185	: this.previewConfig.zoom;
186	}	5✔
187	}	5✔
188		5✔
189	@ViewChild('imgRef', { static: false }) imageRef!: ElementRef<HTMLImageElement>;	5!
190	@ViewChild('imagePreviewWrapper', { static: true }) imagePreviewWrapper!: ElementRef<HTMLElement>;	5✔
191
192	ngOnInit(): void {	5✔
193	this.initPreview();
194	this.ngZone.runOutsideAngular(() => {
195	fromEvent(this.host.nativeElement, 'click')	16✔
196	.pipe(takeUntilDestroyed(this.destroyRef))	16✔
197	.subscribe(event => {	16✔
198	if (	6✔
199	(event.target === event.currentTarget \|\|	6✔
200	(this.isInsideScreen && this.imagePreviewWrapper.nativeElement.contains(event.target as HTMLElement))) &&	6✔
201	!this.previewConfig?.disableClose	6✔
202	) {	6✔
203	this.ngZone.run(() => !this.isFullScreen && this.thyDialog.close());	6✔
204	}	6✔
205	});	6!
206		6✔
207	fromEvent(this.imagePreviewWrapper.nativeElement, 'mousedown')
208	.pipe(takeUntilDestroyed(this.destroyRef))
UNCOV 209	.subscribe(() => {	×
210	this.isDragging = !this.isInsideScreen && true;
211	});	6✔
212	});	6✔
213	}	6!
UNCOV 214		×
215	setOriginalSize() {
216	this.reset();	6✔
217	this.currentImageMode = 'fit-screen';
218	this.zoom = 1;
219	this.updatePreviewImageTransform();
220	this.calculateInsideScreen();	21✔
221	this.isLoadingDone = true;	21!
222	this.cdr.detectChanges();
UNCOV 223	}	×
224		×
225	setFitScreen() {
226	this.reset();
227	this.isInsideScreen = true;	21!
UNCOV 228	this.updatePreviewImage();	×
229	}
230		21✔
231	useDefaultZoomUpdate(isUpdateImageWrapper: boolean) {	5✔
232	this.zoom = this.defaultZoom;
233	this.isLoadingDone = true;
234	this.updatePreviewImageTransform();	16✔
235	if (isUpdateImageWrapper) {
236	this.updatePreviewImageWrapperTransform();
237	}
238	this.cdr.detectChanges();
239	}	21✔
240		21✔
241	useCalculateZoomUpdate(isUpdateImageWrapper?: boolean) {	1✔
242	let img = new Image();	1✔
243	img.src = this.previewImage.src;	1✔
244	img.onload = () => {	1✔
245	const { width: offsetWidth, height: offsetHeight } = getClientSize();
246	const innerWidth = offsetWidth - HORIZONTAL_SPACE;	20✔
247	const innerHeight = offsetHeight - VERTICAL_SPACE;	19✔
248	const { naturalWidth, naturalHeight } = img;	19✔
249	const xRatio = innerWidth / naturalWidth;
250	const yRatio = innerHeight / naturalHeight;
251	const zoom = Math.min(xRatio, yRatio);	1✔
252	if (zoom > 1) {	1!
253	this.zoom = 1;	1✔
254	} else {	1✔
255	this.zoom = zoom;	1✔
256	}	1✔
257	this.isLoadingDone = true;	1✔
258	this.updatePreviewImageTransform();
UNCOV 259	if (isUpdateImageWrapper) {	×
260	this.updatePreviewImageWrapperTransform();	×
261	}
262	this.cdr.detectChanges();
263	};
264	}
265
266	updatePreviewImage() {	18✔
267	this.resolvePreviewImage().subscribe(result => {	1✔
268	if (!result) {	1✔
269	// error	5✔
270	this.isLoadingDone = true;	4✔
271	return;
272	}
273	// image size	1✔
274	if (!this.previewImage.size && this.previewImage.blob) {
275	this.previewImage.size = humanizeBytes(this.previewImage.blob.size);
276	}
277	if (this.defaultZoom) {
278	this.useDefaultZoomUpdate(true);	17✔
279	} else {
280	this.useCalculateZoomUpdate();	18✔
281	}	18✔
282	});
283	}
284		2✔
285	resolvePreviewImage() {	2!
286	return new Observable<Boolean>(subscriber => {	2✔
287	if (this.previewImage.src.startsWith('blob:')) {
288	this.previewImage.objectURL = this.sanitizer.bypassSecurityTrustUrl(this.previewImage.src);
289	subscriber.next(true);	1!
290	subscriber.complete();	1✔
291	return;	1✔
292	}	1!
293	if (this.previewImage.objectURL \|\| !this.previewConfig.resolveSize) {	1✔
294	subscriber.next(true);	1✔
295	subscriber.complete();
296	} else {
297	fetchImageBlob(this.previewImage.src).subscribe(
298	blob => {	2✔
299	const urlCreator = window.URL \|\| window.webkitURL;	1✔
300	const objectURL = urlCreator.createObjectURL(blob);	1✔
301	this.previewImage.objectURL = this.sanitizer.bypassSecurityTrustUrl(objectURL);	1✔
302	this.previewImage.blob = blob;	1✔
303	subscriber.next(true);
304	subscriber.complete();
305	},
306	error => {	2✔
307	subscriber.next(false);	1✔
308	subscriber.complete();	1✔
309	}	1✔
310	);	1✔
311	}
312	});
313	}
314		3✔
315	initPreview() {	3✔
316	if (Array.isArray(this.previewConfig?.operations) && this.previewConfig?.operations.length) {	3✔
317	const defaultOperationsMap = helpers.keyBy(this.defaultPreviewOperations, 'type');	3!
UNCOV 318	this.previewOperations = this.previewConfig?.operations.map(operation => {	×
319	if (helpers.isString(operation) && defaultOperationsMap[operation]) {
320	return defaultOperationsMap[operation];
321	} else {	3✔
322	return operation as ThyImagePreviewOperation;
323	}
324	});
325	} else {	1!
326	this.previewOperations = this.defaultPreviewOperations;
327	}
328	this.rotate = this.previewConfig?.rotate ?? 0;	1✔
329	this.updatePreviewImage();	1✔
330	}
331
332	download(image: ThyImageInfo) {	1✔
333	this.downloadClicked.emit(image);	1✔
334	const src = image.origin?.src \|\| image.src;	1✔
335	fetchImageBlob(src)
336	.pipe(takeUntilDestroyed(this.destroyRef))
337	.subscribe(blob => {	1✔
UNCOV 338	const urlCreator = window.URL \|\| window.webkitURL;	×
339	const objectURL = urlCreator.createObjectURL(blob);	×
340	let a = document.createElement('a');
341	a.download = image.name \|\| 'default.png';
342	a.href = objectURL;
UNCOV 343	a.click();	×
344	});	×
345	}
346
UNCOV 347	zoomIn(): void {	×
348	if (this.zoom < IMAGE_MAX_ZOOM) {
349	this.zoom = Math.min(this.zoom + 0.1, IMAGE_MAX_ZOOM);
350	this.calculateInsideScreen();
351	this.updatePreviewImageTransform();	2✔
352	this.position = { ...initialPosition };	1✔
353	}	1✔
354	}	1✔
355		1✔
356	zoomOut(): void {
357	if (this.zoom > IMAGE_MIN_ZOOM) {
358	this.zoom = Math.max(this.zoom - 0.1, IMAGE_MIN_ZOOM);
359	this.calculateInsideScreen();	2✔
360	this.updatePreviewImageTransform();	1✔
361	this.position = { ...initialPosition };	1✔
362	}	1✔
363	}	1✔
364
365	calculateInsideScreen() {
366	const width = this.imageRef.nativeElement.offsetWidth * this.zoom;
UNCOV 367	const height = this.imageRef.nativeElement.offsetHeight * this.zoom;	×
368	const { width: clientWidth, height: clientHeight } = getClientSize();	×
369	if (width >= clientWidth \|\| height >= clientHeight) {	×
370	this.isInsideScreen = false;	×
371	} else {	×
372	this.isInsideScreen = true;	×
373	}	×
374	}	×
375		×
376	viewOriginal() {
377	window.open(this.previewImage?.origin?.src \|\| this.previewImage.src, '_blank');
378	}
379
380	rotateRight(): void {
UNCOV 381	this.rotate += 90;	×
382	this.updatePreviewImageTransform();	×
383	}	×
384
385	fullScreen(): void {
386	const targetElement = this.host.nativeElement.querySelector('.thy-image-preview');
387	this.isFullScreen = true;	4✔
388	const fullscreenRef = this.thyFullscreen.launch({	4✔
389	target: targetElement	4✔
390	});	4✔
391	fullscreenRef.afterExited().subscribe(() => {
392	this.isFullScreen = false;
393	this.cdr.markForCheck();	15✔
394	});
395	}
396		5✔
397	copyLink(event: ThyCopyEvent) {
398	if (event.isSuccess) {	1✔
399	this.notifyService.success('复制图片地址成功');
400	} else {
401	this.notifyService.error('复制图片地址失败');
402	}
403	}
404		1✔
405	prev() {
406	if (this.previewIndex > 0) {
407	this.previewIndex--;
408	this.isLoadingDone = false;
409	this.reset();
410	this.updatePreviewImage();
411	}
412	}
413
414	next() {
415	if (this.previewIndex < this.images.length - 1) {
416	this.previewIndex++;
417	this.isLoadingDone = false;
418	this.reset();
419	this.updatePreviewImage();
420	}
421	}
422
423	dragReleased() {
424	this.isDragging = false;
425	const width = this.imageRef.nativeElement.offsetWidth * this.zoom;
426	const height = this.imageRef.nativeElement.offsetHeight * this.zoom;
427	const { left, top } = getOffset(this.imageRef.nativeElement, window);
428	const { width: clientWidth, height: clientHeight } = getClientSize();
429	const isRotate = this.rotate % 180 !== 0;
430	const fitContentParams = {
431	width: isRotate ? height : width,
432	height: isRotate ? width : height,
433	left,
434	top,
435	clientWidth,
436	clientHeight
437	};
438	const fitContentPos = getFitContentPosition(fitContentParams);
439	if (!isUndefinedOrNull(fitContentPos.x) \|\| !isUndefinedOrNull(fitContentPos.y)) {
440	this.position = { ...this.position, ...fitContentPos };
441	}
442	}
443
444	private reset(): void {
445	this.currentImageMode = 'original-scale';
446	this.rotate = this.previewConfig?.rotate ?? 0;
447	this.position = { ...initialPosition };
448	this.cdr.detectChanges();
449	}
450
451	private updatePreviewImageTransform(): void {
452	this.previewImageTransform = `scale3d(${this.zoom}, ${this.zoom}, 1) rotate(${this.rotate}deg)`;
453	}
454
455	private updatePreviewImageWrapperTransform(): void {
456	this.previewImageWrapperTransform = `translate3d(${this.position.x}px, ${this.position.y}px, 0)`;
457	}
458	}

atinc / ngx-tethys / d589ffc2-a06b-47b9-9dc7-0e8686fc33a0

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