77 lines
1.6 KiB
Vue
77 lines
1.6 KiB
Vue
<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>
|