feat: 无限画布 — infinite canvas with generation integration

Backend:
- canvases table + owner-scoped CRUD under /admin/api/canvas
  (list/create/get/save/delete, 50 docs/user, 4MiB cap, JSON validation)

Frontend:
- /canvas full-screen workspace: DOM+CSS-transform infinite pan/zoom
  (GPU-composited world layer, viewport culling, rAF-batched pointer moves)
- nodes: image (thumb display, natural-size correction), note
  (uncontrolled contenteditable), generation placeholder with edges
- generate on canvas: prompt from panel or selected notes, selected image
  nodes as references, results auto-placed + bezier edges to sources
- multi-canvas management, debounced autosave + keepalive flush,
  snapshot undo/redo (60 steps), marquee/keyboard interactions
This commit is contained in:
dokploy-bot
2026-09-19 22:38:41 +08:00
parent 42208c0753
commit 571ee2c801
12 changed files with 2078 additions and 1 deletions
@@ -0,0 +1,230 @@
<script setup>
// 单个画布节点。位置/尺寸由 stage 的世界层 transform 统一缩放,
// 这里只负责节点自身内容:image / note / gen(生成中占位)。
// 性能:contain 隔离布局;图片 lazy + async 解码 + 缩略图。
import { ref, onMounted } from 'vue'
import { thumbUrl } from '../../api'
const props = defineProps({
node: { type: Object, required: true },
selected: { type: Boolean, default: false },
})
const emit = defineEmits(['imgload', 'note-commit', 'node-action'])
const imgLoaded = ref(false)
const noteEl = ref(null)
const editing = ref(false)
onMounted(() => {
// 非受控 contenteditable:只在挂载时写初值,避免输入时光标被 v-model 回写打跳。
if (props.node.type === 'note' && noteEl.value) noteEl.value.innerText = props.node.text || ''
})
function onImgLoad(e) {
imgLoaded.value = true
const img = e.target
// 按真实长宽比校正节点尺寸(以长边 512 归一,保持画布视觉密度一致)。
if (img.naturalWidth && img.naturalHeight) {
const long = Math.max(img.naturalWidth, img.naturalHeight)
const k = 512 / long
emit('imgload', {
w: Math.round(img.naturalWidth * k),
h: Math.round(img.naturalHeight * k),
})
}
}
function startEdit() {
if (props.node.type !== 'note') return
editing.value = true
requestAnimationFrame(() => {
const el = noteEl.value
if (el) {
el.innerText = props.node.text || ''
el.focus()
// 光标落末尾
const sel = window.getSelection()
const range = document.createRange()
range.selectNodeContents(el)
range.collapse(false)
sel.removeAllRanges()
sel.addRange(range)
}
})
}
function commitNote() {
if (!editing.value) return
editing.value = false
const text = (noteEl.value?.innerText || '').slice(0, 4000)
if (text !== (props.node.text || '')) emit('note-commit', text)
}
// 双击:笔记 → 进入编辑(自己处理);图片 → 交给父级开预览。
function onSelfDblClick(e) {
if (props.node.type === 'note') {
e.stopPropagation()
startEdit()
} else if (props.node.type === 'image') {
e.stopPropagation()
emit('node-action', { type: 'preview' })
}
}
defineExpose({ startEdit, commitNote })
</script>
<template>
<div
class="cv-node"
:class="[
`cv-node--${node.type}`,
{ 'is-selected': selected, 'is-editing': editing, 'is-failed': node.type === 'gen' && node.status === 'failed' },
]"
:style="{ left: node.x + 'px', top: node.y + 'px', width: node.w + 'px', height: node.h + 'px', zIndex: node.z || 0 }"
:data-node-id="node.id"
@dblclick="onSelfDblClick"
>
<!-- 图片节点 -->
<template v-if="node.type === 'image'">
<img
class="cv-node__img"
:src="thumbUrl(node.src)"
loading="lazy"
decoding="async"
draggable="false"
alt=""
@load="onImgLoad"
@error="imgLoaded = true"
>
<div v-if="node.prompt" class="cv-node__cap" :title="node.prompt">{{ node.prompt }}</div>
</template>
<!-- 笔记节点 -->
<div
v-else-if="node.type === 'note'"
ref="noteEl"
class="cv-node__note"
contenteditable="true"
spellcheck="false"
@blur="commitNote"
@keydown.enter.exact.prevent="commitNote"
/>
<!-- 生成占位节点 -->
<div v-else class="cv-node__gen">
<template v-if="node.status === 'running'">
<span class="cv-node__spin" />
<span>生成中…</span>
</template>
<template v-else>
<span class="cv-node__x">✕</span>
<span class="cv-node__err" :title="node.error || ''">生成失败</span>
</template>
</div>
</div>
</template>
<style scoped>
.cv-node {
position: absolute;
border-radius: 10px;
overflow: hidden;
contain: layout style paint;
user-select: none;
touch-action: none;
cursor: grab;
box-shadow: 0 2px 10px rgb(0 0 0 / 0.35);
}
.cv-node.is-selected {
outline: 2px solid #7c6cff;
outline-offset: 2px;
}
.cv-node:active {
cursor: grabbing;
}
.cv-node__img {
width: 100%;
height: 100%;
object-fit: cover;
display: block;
background: #14161d;
}
.cv-node__cap {
position: absolute;
left: 0;
right: 0;
bottom: 0;
padding: 14px 8px 5px;
font-size: 11px;
line-height: 1.35;
color: #d6d9e2;
background: linear-gradient(transparent, rgb(8 9 13 / 0.92));
white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
pointer-events: none;
}
.cv-node--note {
background: #23262f;
border: 1px solid #343947;
cursor: text;
}
.cv-node--note:not(.is-editing) {
cursor: grab;
}
.cv-node__note {
width: 100%;
height: 100%;
padding: 10px 12px;
font-size: 13px;
line-height: 1.5;
color: #e8eaf0;
outline: none;
white-space: pre-wrap;
word-break: break-word;
overflow: hidden;
user-select: none;
}
.is-editing .cv-node__note {
user-select: text;
cursor: text;
}
.cv-node--gen {
display: flex;
flex-direction: column;
gap: 10px;
align-items: center;
justify-content: center;
background: #1a1d26;
border: 1.5px dashed #4a4f61;
color: #9aa1b2;
font-size: 13px;
}
.cv-node--gen.is-failed {
border-color: #6b3b44;
color: #e58c96;
}
.cv-node__spin {
width: 22px;
height: 22px;
border-radius: 50%;
border: 2.5px solid #3b4152;
border-top-color: #7c6cff;
animation: cv-spin 0.9s linear infinite;
}
@keyframes cv-spin {
to { transform: rotate(360deg); }
}
.cv-node__err {
font-size: 11px;
max-width: 90%;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
</style>