d955d1af-f7dd-4f8a-91dd-f3e4a25da35a

Committed 05 Aug 2024 09:40AM UTC coverage: 90.465% (-0.003%) from 90.468%

Build # d955d1af-f7dd-4f8a-91dd-f3e4a25da35a

Build Type

Pull #3134

circleci

Committed by

minlovehua

Commit Message

feat: switch-handle background always white

Pull Request Pull Request #3134: 【草稿】给设计师看暗主题下对比色效果

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80.81

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

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

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'
    },
    standalone: true,
    imports: [NgIf, ThyTooltipDirective, ThyAction, CdkDrag, NgFor, ThyLoading, ThyIcon, ThyActions, ThyDivider, ThyCopyDirective]
})
export class ThyImagePreview implements OnInit {
    @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: '缩小',
            action: (image: ThyImageInfo) => {
                this.zoomOut();
            },
            type: 'zoom-out'
        },
        {
            icon: 'zoom-in',
            name: '放大',
            action: (image: ThyImageInfo) => {
                this.zoomIn();
            },
            type: 'zoom-in'
        },
        {
            icon: 'one-to-one',
            name: '原始比例',
            action: (image: ThyImageInfo) => {
                this.setOriginalSize();
            },
            type: 'original-scale'
        },
        {
            icon: 'max-view',
            name: '适应屏幕',
            action: () => {
                this.setFitScreen();
            },
            type: 'fit-screen'
        },
        {
            icon: 'expand-arrows',
            name: '全屏显示',
            action: () => {
                this.fullScreen();
            },
            type: 'full-screen'
        },
        {
            icon: 'rotate-right',
            name: '旋转',
            action: (image: ThyImageInfo) => {
                this.rotateRight();
            },
            type: 'rotate-right'
        },
        {
            icon: 'download',
            name: '下载',
            action: (image: ThyImageInfo) => {
                this.download(image);
            },
            type: 'download'
        },
        {
            icon: 'preview',
            name: '查看原图',
            action: () => {
                this.viewOriginal();
            },
            type: 'view-original'
        },
        {
            icon: 'link-insert',
            name: '复制链接',
            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>;

    constructor(
        public thyDialog: ThyDialog,
        public thyFullscreen: ThyFullscreen,
        private cdr: ChangeDetectorRef,
        private ngZone: NgZone,
        private notifyService: ThyNotifyService,
        private host: ElementRef<HTMLElement>,
        private sanitizer: DomSanitizer
    ) {}

    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) {
            this.previewOperations = this.defaultPreviewOperations.filter(item => this.previewConfig.operations.includes(item.type));
        } 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 {
2	ChangeDetectionStrategy,
3	Component,
4	OnInit,
5	ViewEncapsulation,
6	ChangeDetectorRef,
7	ElementRef,
8	ViewChild,
9	NgZone,
10	Output,
11	EventEmitter,
12	inject,
13	DestroyRef
14	} from '@angular/core';
15	import { InternalImageInfo, ThyImageInfo, ThyImagePreviewMode, ThyImagePreviewOperation, ThyImagePreviewOptions } from '../image.class';
16	import { fromEvent, Observable } from 'rxjs';
17	import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
18	import { ThyDialog } from 'ngx-tethys/dialog';
19	import { getClientSize, getFitContentPosition, getOffset, humanizeBytes, isNumber, isUndefinedOrNull } from 'ngx-tethys/util';
20	import { ThyFullscreen } from 'ngx-tethys/fullscreen';	1✔
21	import { ThyCopyEvent, ThyCopyDirective } from 'ngx-tethys/copy';
22	import { ThyNotifyService } from 'ngx-tethys/notify';
23	import { DomSanitizer } from '@angular/platform-browser';
24	import { fetchImageBlob } from '../utils';	1✔
25	import { ThyDivider } from 'ngx-tethys/divider';	1✔
26	import { ThyIcon } from 'ngx-tethys/icon';	1✔
27	import { ThyLoading } from 'ngx-tethys/loading';	1✔
28	import { CdkDrag } from '@angular/cdk/drag-drop';
29	import { ThyAction, ThyActions } from 'ngx-tethys/action';
30	import { ThyTooltipDirective } from 'ngx-tethys/tooltip';
31	import { NgIf, NgFor } from '@angular/common';
32
33	const initialPosition = {	1✔
34	x: 0,
35	y: 0	493✔
36	};	493✔
37	const IMAGE_MAX_ZOOM = 3;	477!
38	const IMAGE_MIN_ZOOM = 0.1;
39	const HORIZONTAL_SPACE = 100 * 2; // left: 100px; right: 100px	493✔
40	const VERTICAL_SPACE = 96 + 106; // top: 96px; bottom: 106px
41
42	/**	38✔
43	* 图片预览组件	38!
44	* @name thy-image-preview	×
45	* @order 20
46	*/	38✔
47	@Component({
48	selector: 'thy-image-preview',
49	exportAs: 'thyImagePreview',	26✔
50	templateUrl: './image-preview.component.html',	10!
51	changeDetection: ChangeDetectionStrategy.OnPush,
52	encapsulation: ViewEncapsulation.None,	10!
53	host: {
54	class: 'thy-image-preview-wrap',
55	'[class.thy-image-preview-moving]': 'isDragging'
56	},
57	standalone: true,
58	imports: [NgIf, ThyTooltipDirective, ThyAction, CdkDrag, NgFor, ThyLoading, ThyIcon, ThyActions, ThyDivider, ThyCopyDirective]	18✔
59	})	18✔
60	export class ThyImagePreview implements OnInit {	18✔
61	@Output() downloadClicked: EventEmitter<ThyImageInfo> = new EventEmitter();	18✔
62		18✔
63	private readonly destroyRef = inject(DestroyRef);	18✔
64		18✔
65	images: InternalImageInfo[] = [];	18✔
66	previewIndex: number = 0;	18✔
67	previewConfig: ThyImagePreviewOptions;	18✔
68	previewImageTransform = '';	18✔
69	previewImageWrapperTransform = '';	18✔
70	zoomDisabled = false;	18✔
71	zoom: number = 1;	18✔
72	position = { ...initialPosition };	18✔
73	isDragging = false;	18✔
74	isLoadingDone = false;	18✔
75	isFullScreen = false;	18✔
76	isInsideScreen = true;	18✔
77	currentImageMode: ThyImagePreviewMode = 'original-scale';	18✔
78	previewOperations: ThyImagePreviewOperation[];	18✔
79	defaultPreviewOperations: ThyImagePreviewOperation[] = [	18✔
80	{
81	icon: 'zoom-out',
82	name: '缩小',
83	action: (image: ThyImageInfo) => {
84	this.zoomOut();	2✔
85	},
86	type: 'zoom-out'
87	},
88	{
89	icon: 'zoom-in',
90	name: '放大',
91	action: (image: ThyImageInfo) => {
92	this.zoomIn();	2✔
93	},
94	type: 'zoom-in'
95	},
96	{
97	icon: 'one-to-one',
98	name: '原始比例',
99	action: (image: ThyImageInfo) => {
100	this.setOriginalSize();	1✔
101	},
102	type: 'original-scale'
103	},
104	{
105	icon: 'max-view',
106	name: '适应屏幕',
107	action: () => {
108	this.setFitScreen();	1✔
109	},
110	type: 'fit-screen'
111	},
112	{
113	icon: 'expand-arrows',
114	name: '全屏显示',
115	action: () => {
116	this.fullScreen();	1✔
117	},
118	type: 'full-screen'
119	},
120	{
121	icon: 'rotate-right',
122	name: '旋转',
123	action: (image: ThyImageInfo) => {
124	this.rotateRight();	1✔
125	},
126	type: 'rotate-right'
127	},
128	{
129	icon: 'download',
130	name: '下载',
131	action: (image: ThyImageInfo) => {
132	this.download(image);	2✔
133	},
134	type: 'download'
135	},
136	{
137	icon: 'preview',
138	name: '查看原图',
139	action: () => {
140	this.viewOriginal();	1✔
141	},
142	type: 'view-original'
143	},
144	{
145	icon: 'link-insert',
146	name: '复制链接',
147	type: 'copyLink'
148	}
149	];
150
151	private rotate: number;
152		18✔
153	get previewImage(): InternalImageInfo {	18✔
154	const image = this.images[this.previewIndex];	18✔
155	if (image.size) {
156	image.size = isNumber(image.size) ? humanizeBytes(image.size) : image.size;
157	}	16✔
158	return image;
159	}
160		2✔
161	get previewImageOriginSrc() {
162	let imageSrc = this.previewImage.origin?.src \|\| this.previewImage.src;
163	if (imageSrc.startsWith('./')) {	18✔
164	return window.location.host + '/' + imageSrc.split('./')[1];
165	}
166	return imageSrc;	×
167	}
168
169	get defaultZoom(): number {
170	if (this.previewConfig?.zoom && this.previewConfig?.zoom > 0) {
171	return this.previewConfig.zoom >= IMAGE_MAX_ZOOM	1✔
172	? IMAGE_MAX_ZOOM	1✔
173	: this.previewConfig.zoom <= IMAGE_MIN_ZOOM	1✔
174	? IMAGE_MIN_ZOOM	1✔
175	: this.previewConfig.zoom;	1✔
176	}	1✔
177	}	1✔
178
179	@ViewChild('imgRef', { static: false }) imageRef!: ElementRef<HTMLImageElement>;
180	@ViewChild('imagePreviewWrapper', { static: true }) imagePreviewWrapper!: ElementRef<HTMLElement>;	1✔
181		1✔
182	constructor(	1✔
183	public thyDialog: ThyDialog,
184	public thyFullscreen: ThyFullscreen,
185	private cdr: ChangeDetectorRef,	5✔
186	private ngZone: NgZone,	5✔
187	private notifyService: ThyNotifyService,	5✔
188	private host: ElementRef<HTMLElement>,	5!
189	private sanitizer: DomSanitizer	5✔
190	) {}
191		5✔
192	ngOnInit(): void {
193	this.initPreview();
194	this.ngZone.runOutsideAngular(() => {	16✔
195	fromEvent(this.host.nativeElement, 'click')	16✔
196	.pipe(takeUntilDestroyed(this.destroyRef))	16✔
197	.subscribe(event => {	6✔
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
207	fromEvent(this.imagePreviewWrapper.nativeElement, 'mousedown')
208	.pipe(takeUntilDestroyed(this.destroyRef))	×
209	.subscribe(() => {
210	this.isDragging = !this.isInsideScreen && true;	6✔
211	});	6✔
212	});	6!
213	}	×
214
215	setOriginalSize() {	6✔
216	this.reset();
217	this.currentImageMode = 'fit-screen';
218	this.zoom = 1;
219	this.updatePreviewImageTransform();	21✔
220	this.calculateInsideScreen();	21!
221	this.isLoadingDone = true;
222	this.cdr.detectChanges();	×
223	}	×
224
225	setFitScreen() {
226	this.reset();	21!
227	this.isInsideScreen = true;	×
228	this.updatePreviewImage();
229	}	21✔
230		5✔
231	useDefaultZoomUpdate(isUpdateImageWrapper: boolean) {
232	this.zoom = this.defaultZoom;
233	this.isLoadingDone = true;	16✔
234	this.updatePreviewImageTransform();
235	if (isUpdateImageWrapper) {
236	this.updatePreviewImageWrapperTransform();
237	}
238	this.cdr.detectChanges();	21✔
239	}	21✔
240		1✔
241	useCalculateZoomUpdate(isUpdateImageWrapper?: boolean) {	1✔
242	let img = new Image();	1✔
243	img.src = this.previewImage.src;	1✔
244	img.onload = () => {
245	const { width: offsetWidth, height: offsetHeight } = getClientSize();	20✔
246	const innerWidth = offsetWidth - HORIZONTAL_SPACE;	19✔
247	const innerHeight = offsetHeight - VERTICAL_SPACE;	19✔
248	const { naturalWidth, naturalHeight } = img;
249	const xRatio = innerWidth / naturalWidth;
250	const yRatio = innerHeight / naturalHeight;	1✔
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;
258	this.updatePreviewImageTransform();	×
259	if (isUpdateImageWrapper) {	×
260	this.updatePreviewImageWrapperTransform();
261	}
262	this.cdr.detectChanges();
263	};
264	}
265		18✔
266	updatePreviewImage() {	9✔
267	this.resolvePreviewImage().subscribe(result => {
268	if (!result) {
269	// error	17✔
270	this.isLoadingDone = true;
271	return;	18✔
272	}	18✔
273	// image size
274	if (!this.previewImage.size && this.previewImage.blob) {
275	this.previewImage.size = humanizeBytes(this.previewImage.blob.size);	2✔
276	}	2!
277	if (this.defaultZoom) {	2✔
278	this.useDefaultZoomUpdate(true);
279	} else {
280	this.useCalculateZoomUpdate();	1!
281	}	1✔
282	});	1✔
283	}	1!
284		1✔
285	resolvePreviewImage() {	1✔
286	return new Observable<Boolean>(subscriber => {
287	if (this.previewImage.src.startsWith('blob:')) {
288	this.previewImage.objectURL = this.sanitizer.bypassSecurityTrustUrl(this.previewImage.src);
289	subscriber.next(true);	2✔
290	subscriber.complete();	1✔
291	return;	1✔
292	}	1✔
293	if (this.previewImage.objectURL \|\| !this.previewConfig.resolveSize) {	1✔
294	subscriber.next(true);
295	subscriber.complete();
296	} else {
297	fetchImageBlob(this.previewImage.src).subscribe(	2✔
298	blob => {	1✔
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;
303	subscriber.next(true);
304	subscriber.complete();
305	},	3✔
306	error => {	3✔
307	subscriber.next(false);	3✔
308	subscriber.complete();	3!
309	}	×
310	);
311	}
312	});	3✔
313	}
314
315	initPreview() {
316	if (Array.isArray(this.previewConfig?.operations) && this.previewConfig?.operations.length) {	1!
317	this.previewOperations = this.defaultPreviewOperations.filter(item => this.previewConfig.operations.includes(item.type));
318	} else {
319	this.previewOperations = this.defaultPreviewOperations;	1✔
320	}	1✔
321	this.rotate = this.previewConfig?.rotate ?? 0;
322	this.updatePreviewImage();
323	}	1✔
324		1✔
325	download(image: ThyImageInfo) {	1✔
326	this.downloadClicked.emit(image);
327	const src = image.origin?.src \|\| image.src;
328	fetchImageBlob(src)	1✔
329	.pipe(takeUntilDestroyed(this.destroyRef))	×
330	.subscribe(blob => {	×
331	const urlCreator = window.URL \|\| window.webkitURL;
332	const objectURL = urlCreator.createObjectURL(blob);
333	let a = document.createElement('a');
334	a.download = image.name \|\| 'default.png';	×
335	a.href = objectURL;	×
336	a.click();
337	});
338	}	×
339
340	zoomIn(): void {
341	if (this.zoom < IMAGE_MAX_ZOOM) {
342	this.zoom = Math.min(this.zoom + 0.1, IMAGE_MAX_ZOOM);	2✔
343	this.calculateInsideScreen();	1✔
344	this.updatePreviewImageTransform();	1✔
345	this.position = { ...initialPosition };	1✔
346	}	1✔
347	}
348
349	zoomOut(): void {
350	if (this.zoom > IMAGE_MIN_ZOOM) {	2✔
351	this.zoom = Math.max(this.zoom - 0.1, IMAGE_MIN_ZOOM);	1✔
352	this.calculateInsideScreen();	1✔
353	this.updatePreviewImageTransform();	1✔
354	this.position = { ...initialPosition };	1✔
355	}
356	}
357
358	calculateInsideScreen() {	×
359	const width = this.imageRef.nativeElement.offsetWidth * this.zoom;	×
360	const height = this.imageRef.nativeElement.offsetHeight * this.zoom;	×
361	const { width: clientWidth, height: clientHeight } = getClientSize();	×
362	if (width >= clientWidth \|\| height >= clientHeight) {	×
363	this.isInsideScreen = false;	×
364	} else {	×
365	this.isInsideScreen = true;	×
366	}	×
367	}
368
369	viewOriginal() {
370	window.open(this.previewImage?.origin?.src \|\| this.previewImage.src, '_blank');
371	}
372		×
373	rotateRight(): void {	×
374	this.rotate += 90;	×
375	this.updatePreviewImageTransform();
376	}
377
378	fullScreen(): void {	4✔
379	const targetElement = this.host.nativeElement.querySelector('.thy-image-preview');	4✔
380	this.isFullScreen = true;	4✔
381	const fullscreenRef = this.thyFullscreen.launch({	4✔
382	target: targetElement
383	});
384	fullscreenRef.afterExited().subscribe(() => {	15✔
385	this.isFullScreen = false;
386	this.cdr.markForCheck();
387	});	5✔
388	}
389		1✔
390	copyLink(event: ThyCopyEvent) {
391	if (event.isSuccess) {
392	this.notifyService.success('复制图片地址成功');
393	} else {
394	this.notifyService.error('复制图片地址失败');
395	}
396	}
397
398	prev() {	1✔
399	if (this.previewIndex > 0) {
400	this.previewIndex--;
401	this.isLoadingDone = false;
402	this.reset();
403	this.updatePreviewImage();
404	}	1✔
405	}
406
407	next() {
408	if (this.previewIndex < this.images.length - 1) {
409	this.previewIndex++;
410	this.isLoadingDone = false;
411	this.reset();
412	this.updatePreviewImage();
413	}
414	}
415
416	dragReleased() {
417	this.isDragging = false;
418	const width = this.imageRef.nativeElement.offsetWidth * this.zoom;
419	const height = this.imageRef.nativeElement.offsetHeight * this.zoom;
420	const { left, top } = getOffset(this.imageRef.nativeElement, window);
421	const { width: clientWidth, height: clientHeight } = getClientSize();
422	const isRotate = this.rotate % 180 !== 0;
423	const fitContentParams = {
424	width: isRotate ? height : width,
425	height: isRotate ? width : height,
426	left,
427	top,
428	clientWidth,
429	clientHeight
430	};
431	const fitContentPos = getFitContentPosition(fitContentParams);
432	if (!isUndefinedOrNull(fitContentPos.x) \|\| !isUndefinedOrNull(fitContentPos.y)) {
433	this.position = { ...this.position, ...fitContentPos };
434	}
435	}
436
437	private reset(): void {
438	this.currentImageMode = 'original-scale';
439	this.rotate = this.previewConfig?.rotate ?? 0;
440	this.position = { ...initialPosition };
441	this.cdr.detectChanges();
442	}
443
444	private updatePreviewImageTransform(): void {
445	this.previewImageTransform = `scale3d(${this.zoom}, ${this.zoom}, 1) rotate(${this.rotate}deg)`;
446	}
447
448	private updatePreviewImageWrapperTransform(): void {
449	this.previewImageWrapperTransform = `translate3d(${this.position.x}px, ${this.position.y}px, 0)`;
450	}
451	}

atinc / ngx-tethys / d955d1af-f7dd-4f8a-91dd-f3e4a25da35a

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