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1---
2pagetitle: Viewer user manual - ldgallery
3title: LDGALLERY-VIEWER(7) ldgallery
4author: Pacien TRAN-GIRARD, Guillaume FOUET
5date: 2020-04-30 (v1.0)
6---
7
8
9# NAME
10
11ldgallery viewer - a static web gallery viewer with tags
12
13
14# DESCRIPTION
15
16The ldgallery viewer is a web application that allows users to browse, search through and view items in galleries generated by the ldgallery(1) compiler.
17
18The web application runs in a JavaScript-enabled web browser and does not require any special software on the server's side.
19Its responsiveness allows it to be used from either a desktop browser or some mobile device.
20
21
22# USER INTERFACE
23
24The viewer's user interface is split into a main item view and a side search panel, which can be opened by using the appropriate button in the toolbar at the top-left corner.
25
26The main view displays the gallery's directories and items as a thumbnail grid.
27
28The side panel allows the user to interactively enter filtering queries to search through the gallery's content.
29This panel features a list of relevant tags, grouped by categories, that can be used to build the search query.
30
31Picture items can be opened and visualised within the application.
32Other types of elements are either downloaded or displayed in the same window depending on the user's web browser supported media types.
33
34
35# SEARCH QUERIES
36
37Items can be filtered based on their tags.
38Adding tags to the search query restricts the search results to items having those tags.
39Tags which belong to multiple categories may be disambiguated by adding their category as a prefix, separated by a colon (":").
40
41The following modifiers can be used in queries as prefixes of tags:
42
43`+`
44: Include all items having the associated tag, independently of simple tag restrictions.
45
46`-`
47: Exclude all items having the associated tag, independently of simple tag restrictions and inclusions.
48
49Autocompletion suggestions are shown as filters are being typed in the query field.
50In the case of disambiguated tags, both the category and the tag components are allowed to be partially entered, allowing "loc:fra" to expand into "location:france" for example.
51
52
53# VIEWER CONFIGURATION
54
55The viewer itself can be configured through a JSON file named "config.json" and placed in the web viewer's directory.
56
57galleryRoot
58: Absolute or relative path to the root of the gallery to display.
59
60
61# PROGRESSIVE WEB APPLICATION
62
63This web application can be "installed" on some user's mobile device as a progressive web application, i.e. a shortcut giving the web page the appearance of a native application.
64
65This feature can be enabled by adding a PWA manifest in the viewer's directory when deployed.
66An example of such manifest and an associated icon are available in the example folder packaged with the viewer.
67
68
69# SEE ALSO
70
71Related manual pages: __ldgallery__(1), __ldgallery-quickstart__(7)
72
73The ldgallery source code is available on <https://ldgallery.pacien.org>.
74
75
76# LICENSE
77
78Copyright (C) 2019-2020 Pacien TRAN-GIRARD and Guillaume FOUET.
79
80This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
81
82This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
83See the GNU Affero General Public License for more details <https://www.gnu.org/licenses/agpl-3.0.html>.