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Diffstat (limited to 'viewer/src/components/item_handlers/LdPictureViewer.vue')
-rw-r--r-- | viewer/src/components/item_handlers/LdPictureViewer.vue | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/viewer/src/components/item_handlers/LdPictureViewer.vue b/viewer/src/components/item_handlers/LdPictureViewer.vue new file mode 100644 index 0000000..003ffe9 --- /dev/null +++ b/viewer/src/components/item_handlers/LdPictureViewer.vue | |||
@@ -0,0 +1,128 @@ | |||
1 | <!-- ldgallery - A static generator which turns a collection of tagged | ||
2 | -- pictures into a searchable web gallery. | ||
3 | -- | ||
4 | -- Copyright (C) 2019-2020 Guillaume FOUET | ||
5 | -- | ||
6 | -- This program is free software: you can redistribute it and/or modify | ||
7 | -- it under the terms of the GNU Affero General Public License as | ||
8 | -- published by the Free Software Foundation, either version 3 of the | ||
9 | -- License, or (at your option) any later version. | ||
10 | -- | ||
11 | -- This program is distributed in the hope that it will be useful, | ||
12 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | -- GNU Affero General Public License for more details. | ||
15 | -- | ||
16 | -- You should have received a copy of the GNU Affero General Public License | ||
17 | -- along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
18 | --> | ||
19 | |||
20 | <template> | ||
21 | <!-- FIXME: v-dragscroll interferes with pinch-to-zoom --> | ||
22 | <div | ||
23 | ref="containerElement" | ||
24 | v-dragscroll | ||
25 | class="scrollbar ld-picture-container" | ||
26 | @click.capture="e => dragScrollClickFix.onClickCapture(e)" | ||
27 | @dblclick="$uiStore.toggleFullscreen()" | ||
28 | @dragstart.prevent | ||
29 | @dragscrollstart="dragScrollClickFix.onDragScrollStart()" | ||
30 | @dragscrollend="dragScrollClickFix.onDragScrollEnd()" | ||
31 | > | ||
32 | <v-lazy-image | ||
33 | ref="imageElement" | ||
34 | :src="pictureSrc(item.properties.resource)" | ||
35 | class="ld-picture-element" | ||
36 | :class="{ 'slow-loading': Boolean(slowLoadingStyle) }" | ||
37 | :style="slowLoadingStyle" | ||
38 | @load="clearSlowLoading" | ||
39 | /> | ||
40 | <b-loading :active="loader" :is-full-page="false" class="ld-picture-loader" /> | ||
41 | </div> | ||
42 | </template> | ||
43 | |||
44 | <script lang="ts"> | ||
45 | import { PictureItem } from "@/@types/gallery"; | ||
46 | import DragScrollClickFix from "@/services/dragscrollclickfix"; | ||
47 | import LdZoom from "@/services/ldzoom"; | ||
48 | import { Component, Prop, Ref, Vue } from "vue-property-decorator"; | ||
49 | |||
50 | @Component | ||
51 | export default class LdPictureViewer extends Vue { | ||
52 | @Prop({ required: true }) readonly item!: PictureItem; | ||
53 | @Ref() readonly containerElement!: HTMLDivElement; | ||
54 | @Ref() readonly imageElement!: Vue; | ||
55 | |||
56 | readonly SLOW_LOADING_TIMEOUT_MS: number = 1500; | ||
57 | readonly dragScrollClickFix = new DragScrollClickFix(); | ||
58 | |||
59 | slowLoadingStyle: string | null = null; | ||
60 | loader: boolean = false; | ||
61 | timer: NodeJS.Timeout | null = null; | ||
62 | |||
63 | mounted() { | ||
64 | this.timer = setTimeout(this.generateSlowLoadingStyle, this.SLOW_LOADING_TIMEOUT_MS); | ||
65 | new LdZoom( | ||
66 | this.containerElement, | ||
67 | this.imageElement.$el as HTMLImageElement, | ||
68 | this.item.properties, | ||
69 | 10, | ||
70 | 1 / 5 | ||
71 | ).install(); | ||
72 | } | ||
73 | |||
74 | destroyed() { | ||
75 | this.clearSlowLoading(); | ||
76 | } | ||
77 | |||
78 | clearSlowLoading() { | ||
79 | if (this.timer) clearTimeout(this.timer); | ||
80 | this.timer = null; | ||
81 | this.slowLoadingStyle = null; | ||
82 | this.loader = false; | ||
83 | } | ||
84 | |||
85 | pictureSrc(resource: string) { | ||
86 | return this.$galleryStore.resourceRoot + resource; | ||
87 | } | ||
88 | |||
89 | generateSlowLoadingStyle() { | ||
90 | this.clearSlowLoading(); | ||
91 | this.loader = true; | ||
92 | if (this.item.thumbnail) { | ||
93 | const url = this.pictureSrc(this.item.thumbnail.resource); | ||
94 | this.slowLoadingStyle = `background-image: url('${url}');`; | ||
95 | } | ||
96 | } | ||
97 | } | ||
98 | </script> | ||
99 | |||
100 | <style lang="scss"> | ||
101 | @import "~@/assets/scss/theme.scss"; | ||
102 | |||
103 | .ld-picture-container { | ||
104 | height: 100%; | ||
105 | } | ||
106 | |||
107 | .ld-picture-element { | ||
108 | max-width: unset; | ||
109 | max-height: unset; | ||
110 | cursor: grab; | ||
111 | } | ||
112 | |||
113 | .slow-loading { | ||
114 | background-repeat: no-repeat; | ||
115 | background-position: center; | ||
116 | background-size: contain; | ||
117 | background-color: $content-bgcolor; | ||
118 | background-blend-mode: soft-light; | ||
119 | opacity: 1 !important; | ||
120 | } | ||
121 | |||
122 | .ld-picture-loader { | ||
123 | position: relative; | ||
124 | & .loading-background { | ||
125 | background: none !important; | ||
126 | } | ||
127 | } | ||
128 | </style> | ||