1 | "use strict";
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3 | exports.__esModule = true;
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4 | exports.default = useImage;
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6 | var _react = require("react");
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33 | function useImage(imageOrUrl, crossOrigin) {
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34 | var _useState = (0, _react.useState)({
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35 | image: null,
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36 | error: null
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37 | }),
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38 | state = _useState[0],
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39 | setState = _useState[1];
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40 |
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41 | (0, _react.useEffect)(function () {
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42 | if (!imageOrUrl) return undefined;
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43 | var image;
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44 |
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45 | if (typeof imageOrUrl === 'string') {
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46 | image = new Image();
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47 | if (crossOrigin) image.crossOrigin = crossOrigin;
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48 | image.src = imageOrUrl;
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49 | } else {
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50 | image = imageOrUrl;
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51 |
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52 | if (image.complete && image.naturalHeight > 0) {
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53 | setState({
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54 | image: image,
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55 | error: null
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56 | });
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57 | return;
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58 | }
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59 | }
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60 |
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61 | function onLoad() {
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62 | setState({
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63 | image: image,
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64 | error: null
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65 | });
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66 | }
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67 |
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68 | function onError(error) {
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69 | setState({
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70 | image: image,
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71 | error: error
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72 | });
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73 | }
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74 |
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75 | image.addEventListener('load', onLoad);
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76 | image.addEventListener('error', onError);
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77 | return function () {
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78 | image.removeEventListener('load', onLoad);
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79 | image.removeEventListener('error', onError);
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80 | };
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81 | }, [imageOrUrl, crossOrigin]);
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82 | return state;
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83 | } |
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