1 | <template>
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2 | <!-- Used to calculate the character size of our monospace font -->
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3 | <span class="monospace-font-sizer">ngÄ tama a rangi</span>
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4 |
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5 | <div class="paper">
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6 | <AudioUpload />
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7 | </div>
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8 |
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9 | <ul id="transcription-list" class="list-view">
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10 | <transition-group name="transcription-list">
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11 | <li class="list-item transcription-list-item" v-for="[id, transcription] in transcriptions" :key="id">
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12 | <TranscriptionItem :transcription="transcription" />
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13 | </li>
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14 | </transition-group>
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15 | </ul>
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16 | </template>
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17 |
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18 | <style lang="scss">
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19 | #transcription-list {
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20 | margin-bottom: 1em;
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21 | }
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22 |
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23 | .monospace-font-sizer {
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24 | font: var(--monospace-font);
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25 | padding: 0;
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26 | position: absolute;
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27 | top: -100px;
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28 | }
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29 |
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30 | .transform-rotate180 {
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31 | --transition-duration: 0.4s;
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32 | transition-duration: var(--transition-duration);
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33 |
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34 | transform: rotate(180deg);
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35 | }
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36 |
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37 | .transform-slideout-up {
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38 | --transition-duration: 0.4s;
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39 | transition-duration: var(--transition-duration);
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40 |
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41 | z-index: -1;
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42 | transform: translate(0, -100%);
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43 | opacity: 0;
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44 | }
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45 |
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46 | .transcription-list-item {
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47 | transition: all 0.8s ease;
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48 | }
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49 |
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50 | .transcription-list-leave-to {
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51 | opacity: 0;
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52 | transform: translateX(30%);
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53 | }
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54 |
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55 | .transcription-list-leave-active {
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56 | position: absolute;
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57 | }
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58 | </style>
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59 |
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60 | <script>
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61 | import { mapState } from "vuex";
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62 | import AudioUpload from "./components/AudioUpload.vue"
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63 | import TranscriptionItem from "./components/TranscriptionItem.vue"
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64 |
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65 | export default {
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66 | name: "App",
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67 | components: {
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68 | AudioUpload,
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69 | TranscriptionItem
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70 | },
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71 | data() {
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72 | return {
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73 | /** @type {{id: String, url: String} | null} */
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74 | currentlyLoadedAudio: null,
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75 | player: new Audio()
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76 | }
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77 | },
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78 | computed: mapState({
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79 | translations: state => state.translations,
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80 | transcriptions: state => state.rawTranscriptions,
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81 | playbackState: state => state.playbackState,
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82 | shouldPlayAudio: state => state.playbackState.isPlaying
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83 | }),
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84 | watch: {
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85 | async playbackState(newValue) {
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86 | if (!newValue.isPlaying) {
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87 | return;
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88 | }
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89 |
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90 | const transcription = this.transcriptions.get(newValue.id);
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91 | loadTranscriptionAudio(this.player, transcription, this.currentlyLoadedAudio);
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92 |
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93 | let playbackTime = 0;
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94 | if (newValue.currentTime > 0) {
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95 | playbackTime = newValue.currentTime;
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96 | }
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97 |
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98 | this.player.currentTime = playbackTime;
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99 | await this.player.play();
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100 | }//,
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101 | // shouldPlayAudio(newValue) {
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102 | // if (newValue && this.$refs.audioPlayer.paused) {
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103 | // this.$refs.audioPlayer.play();
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104 | // }
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105 | // else if (!newValue && !this.$refs.audioPlayer.paused) {
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106 | // this.$refs.audioPlayer.pause();
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107 | // }
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108 | // }
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109 | },
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110 | mounted() {
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111 | pollAudioTime(this.player, this.$store);
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112 | }
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113 | }
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114 |
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115 | // Adapted from https://davidwalsh.name/javascript-polling
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116 | function pollAudioTime(audioElement, store) {
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117 | var lastTime = 0;
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118 | (function p() {
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119 | if (audioElement.currentTime !== lastTime) {
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120 | lastTime = audioElement.currentTime;
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121 | store.commit("setCurrentPlaybackTime", lastTime);
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122 | store.commit("setCurrentlyPlaying", true);
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123 | }
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124 | else {
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125 | store.commit("setCurrentlyPlaying", false);
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126 | }
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127 |
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128 | setTimeout(p, 50);
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129 | })();
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130 | }
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131 |
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132 | /**
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133 | * Loads an audio file.
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134 | * @param {Audio} player The audio player.
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135 | * @param {TranscriptionViewModel} transcription The name of the requested audio file.
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136 | * @param {{id: String, url: String} | null} current The currently loaded audio.
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137 | * @returns {{id: String, url: String}} If a new audio file was loaded, a new audio tracking object, else the current one.
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138 | */
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139 | function loadTranscriptionAudio(player, transcription, current) {
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140 | if (current == null || current.id !== transcription.id) {
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141 | // TODO: Need to profile on some larger tracks; this may not be worth it? Better to cache a URL object instead?
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142 | if (current !== null) {
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143 | URL.revokeObjectURL(current.url);
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144 | }
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145 |
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146 | const urlObject = URL.createObjectURL(transcription.file);
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147 | player.src = urlObject;
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148 | player.load();
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149 |
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150 | return { id: transcription.id, url: urlObject };
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151 | }
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152 |
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153 | return current;
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154 | }
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155 | </script>
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