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Intro.vue
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Intro.vue
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<script lang="ts" setup>
import { Handle, Position, VueFlow, useVueFlow } from '@vue-flow/core'
import { breakpointsTailwind, useBreakpoints } from '@vueuse/core'
import { Background } from '@vue-flow/background'
import Heart from '~icons/mdi/heart'
const breakpoints = useBreakpoints(breakpointsTailwind)
const currentBreakpoint = ref<string | null>(null)
const isDark = ref(false)
onMounted(() => {
const html = document.getElementsByTagName('html')![0]
isDark.value = html.classList.contains('dark')
const observer = new MutationObserver(() => {
isDark.value = html.classList.contains('dark')
})
observer.observe(html, {
attributes: true,
attributeOldValue: true,
attributeFilter: ['class'],
})
onBeforeUnmount(() => {
observer.disconnect()
})
})
const initialEdges = [
{
id: 'eintro-examples',
sourceHandle: 'a',
source: 'intro',
target: 'examples',
animated: true,
style: { strokeWidth: 4, stroke: '#ef467e' },
},
{
id: 'eintro-documentation',
sourceHandle: 'a',
source: 'intro',
target: 'documentation',
animated: true,
style: { strokeWidth: 4, stroke: '#f97316' },
},
{
id: 'eintro-acknowledgement',
sourceHandle: 'a',
source: 'intro',
target: 'acknowledgement',
animated: true,
style: { strokeWidth: 4, stroke: '#0ea5e9' },
},
]
const { getNodes, findNode, setEdges, updateNodeInternals, dimensions } = useVueFlow({
nodes: [
{ id: 'intro', type: 'box', position: { x: 0, y: 0 } },
{ id: 'examples', type: 'box', position: { x: -50, y: 400 } },
{ id: 'documentation', type: 'box', position: { x: 300, y: 400 } },
{ id: 'acknowledgement', type: 'box', position: { x: 150, y: 500 } },
],
edges: initialEdges,
elementsSelectable: true,
panOnDrag: false,
zoomOnScroll: false,
zoomOnDoubleClick: false,
zoomOnPinch: false,
preventScrolling: false,
elevateEdgesOnSelect: true,
})
const el = templateRef<HTMLDivElement>('el', null)
const setElements = useDebounceFn(() => {
const offsetX = dimensions.value.width / 2
const offsetY = dimensions.value.height / 4
if (breakpoints.isSmaller('md') && currentBreakpoint.value !== 'sm') {
const mainNode = findNode('intro')!
currentBreakpoint.value = 'sm'
getNodes.value.forEach((node) => {
switch (node.id) {
case 'intro':
node.position = {
x: offsetX - node.dimensions.width / 2,
y: offsetY - node.dimensions.height / 2,
}
break
case 'examples':
node.position = {
x: offsetX - node.dimensions.width / 2,
y: mainNode.position.y + mainNode.dimensions.height * 1.5,
}
break
case 'documentation':
node.position = {
x: offsetX - node.dimensions.width / 2,
y: mainNode.position.y + mainNode.dimensions.height * 2 + 50,
}
break
case 'acknowledgement':
node.position = {
x: offsetX - node.dimensions.width / 2,
y: mainNode.position.y + mainNode.dimensions.height * 3,
}
break
}
})
setEdges(() => {
return [
{
id: 'eintro-examples',
sourceHandle: 'a',
source: 'intro',
target: 'examples',
animated: true,
style: { strokeWidth: 4, stroke: '#ef467e' },
},
{
id: 'eexamples-documentation',
source: 'examples',
target: 'documentation',
animated: true,
style: { strokeWidth: 4, stroke: '#f97316' },
},
{
id: 'edocumentation-acknowledgement',
source: 'documentation',
target: 'acknowledgement',
animated: true,
style: { strokeWidth: 4, stroke: '#0ea5e9' },
},
]
})
} else if (!breakpoints.isSmaller('md')) {
currentBreakpoint.value = 'md'
getNodes.value.forEach((node) => {
const mainNode = findNode('intro')!
switch (node.id) {
case 'intro':
node.position = { x: offsetX - node.dimensions.width / 2, y: offsetY - node.dimensions.height / 2 }
break
case 'examples':
node.position = {
x: mainNode.position.x - node.dimensions.width / 2,
y: mainNode.position.y + mainNode.dimensions.height * 1.5,
}
break
case 'documentation':
node.position = {
x: mainNode.position.x + mainNode.dimensions.width - node.dimensions.width / 2,
y: mainNode.position.y + mainNode.dimensions.height * 1.5,
}
break
case 'acknowledgement':
node.position = {
x: offsetX - node.dimensions.width / 2,
y: mainNode.position.y + mainNode.dimensions.height * 2,
}
break
}
})
setEdges(initialEdges)
}
nextTick(() => {
updateNodeInternals()
})
}, 1)
useResizeObserver(el, setElements)
function scrollTo() {
const el = document.getElementById('acknowledgement')
if (el) {
el.scrollIntoView({ behavior: 'smooth' })
}
}
</script>
<template>
<VueFlow ref="el" :style="{ opacity: !!currentBreakpoint ? 1 : 0 }">
<Background id="dots" pattern-color="#aaa" :size="0.75" :gap="25" />
<Background id="lines" variant="lines" :pattern-color="isDark ? '#fff' : '#000'" :size="1" :gap="100" />
<template #node-box="props">
<template v-if="props.id === 'intro'">
<div class="box max-w-75 md:max-w-125">
<div class="intro px-4 py-2 shadow-lg rounded-md border-2 border-solid border-black">
<div class="font-mono flex flex-col gap-4 p-4 items-center text-center">
<h1 class="text-2xl lg:text-4xl !my-0 !pt-0 font-bold">Vue Flow</h1>
<h2 class="!text-lg !lg:text-xl !tracking-normal !font-normal !p-0 !m-0 !border-0 !mb-4">
The customizable Vue 3 component bringing interactivity to flowcharts and graphs.
</h2>
</div>
<Handle
:connectable="false"
style="height: 12px; width: 6rem; bottom: -6px; background: #aaa; border-radius: 2px"
type="source"
:position="Position.Bottom"
/>
</div>
</div>
</template>
<template v-else-if="props.id === 'documentation'">
<div class="flex">
<a class="intro-link group bg-[#f15a16]" href="/guide/"> Read The Documentation </a>
</div>
<Handle
style="height: 12px; width: 2rem; top: -6px; background: #aaa; border-radius: 2px"
type="target"
:position="Position.Top"
/>
<Handle
style="height: 12px; width: 2rem; bottom: -6px; background: #aaa; border-radius: 2px"
class="block md:hidden"
type="source"
:position="Position.Bottom"
/>
</template>
<template v-else-if="props.id === 'examples'">
<div class="flex">
<a class="intro-link group bg-pink-500" href="/examples/"> Check The Examples </a>
</div>
<Handle
style="height: 12px; width: 2rem; top: -6px; background: #aaa; border-radius: 2px"
type="target"
:position="Position.Top"
/>
<Handle
style="height: 12px; width: 2rem; bottom: -6px; background: #aaa; border-radius: 2px"
class="block md:hidden"
type="source"
:position="Position.Bottom"
/>
</template>
<template v-else-if="props.id === 'acknowledgement'">
<div class="flex" @click="scrollTo">
<button class="intro-link group bg-sky-500"><Heart class="text-red-500" /> Acknowledgement</button>
</div>
<Handle
style="height: 12px; width: 2rem; top: -6px; background: #aaa; border-radius: 2px"
type="target"
:position="Position.Top"
/>
</template>
</template>
</VueFlow>
</template>
<style>
.intro {
@apply cursor-pointer
bg-primary
text-white
transform
transition-transform
duration-300
hover:(ring ring-white);
}
.intro-link {
@apply flex
gap-3
items-center
p-4
shadow-lg
transform
transition-transform
duration-300
hover:(scale-102)
transition-colors
ease-in-out
rounded-lg
!text-white
!font-semibold
!no-underline
text-lg;
}
</style>