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-rw-r--r--viewer/src/services/dragscrollclickfix.ts51
1 files changed, 0 insertions, 51 deletions
diff --git a/viewer/src/services/dragscrollclickfix.ts b/viewer/src/services/dragscrollclickfix.ts
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--- a/viewer/src/services/dragscrollclickfix.ts
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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// https://github.com/donmbelembe/vue-dragscroll/issues/61
21export default class DragScrollClickFix {
22 readonly DRAG_DELAY = 250; // This is the minimal delay to consider a click to be a drag, mostly usefull for touch devices
23
24 timer: NodeJS.Timeout | null = null;
25 dragging: boolean = false;
26
27 onDragScrollStart() {
28 this.timer = setTimeout(() => this.onTimer(), this.DRAG_DELAY);
29 }
30
31 onTimer() {
32 this.timer = null;
33 this.dragging = true;
34 }
35
36 onDragScrollEnd() {
37 if (this.timer) {
38 clearTimeout(this.timer);
39 this.timer = null;
40 }
41 setTimeout(() => (this.dragging = false));
42 }
43
44 onClickCapture(e: MouseEvent) {
45 if (this.dragging) {
46 this.dragging = false;
47 e.preventDefault();
48 e.stopPropagation();
49 }
50 }
51}