1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
<script>
import { GlButtonGroup, GlButton } from '@gitlab/ui';
const DEFAULT_SCALE = 1;
const MIN_SCALE = 1;
const ZOOM_LEVELS = 5;
export default {
components: {
GlButtonGroup,
GlButton,
},
props: {
maxScale: {
type: Number,
required: true,
},
},
data() {
return {
scale: DEFAULT_SCALE,
};
},
computed: {
disableReset() {
return this.scale <= MIN_SCALE;
},
disableDecrease() {
return this.scale === DEFAULT_SCALE;
},
disableIncrease() {
return this.scale >= this.maxScale;
},
stepSize() {
return (this.maxScale - MIN_SCALE) / ZOOM_LEVELS;
},
},
methods: {
setScale(scale) {
if (scale < MIN_SCALE) {
return;
}
this.scale = Math.round(scale * 100) / 100;
this.$emit('scale', this.scale);
},
incrementScale() {
this.setScale(Math.min(this.scale + this.stepSize, this.maxScale));
},
decrementScale() {
this.setScale(Math.max(this.scale - this.stepSize, MIN_SCALE));
},
resetScale() {
this.setScale(DEFAULT_SCALE);
},
},
};
</script>
<template>
<gl-button-group class="gl-z-index-1">
<gl-button
icon="dash"
:disabled="disableDecrease"
:aria-label="__('Decrease')"
@click="decrementScale"
/>
<gl-button icon="redo" :disabled="disableReset" :aria-label="__('Reset')" @click="resetScale" />
<gl-button
icon="plus"
:disabled="disableIncrease"
:aria-label="__('Increase')"
@click="incrementScale"
/>
</gl-button-group>
</template>
|
