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{{- if .Page.Params.mermaid -}}
<link rel="stylesheet" href="{{ "css/mermaid.css" | relURL }}">
<script src="https://cdn.jsdelivr.net/npm/mermaid@10.6.1/dist/mermaid.min.js"></script>
<script>
mermaid.initialize({
startOnLoad: true,
flowchart: {
htmlLabels: false,
useMaxWidth: false,
nodeSpacing: 50,
rankSpacing: 50,
defaultRenderer: 'svg'
},
theme: 'default',
securityLevel: 'loose',
themeVariables: {
nodeBorder: '#000',
mainBkg: '#fff',
nodeTextColor: '#000',
fontSize: '14px'
}
});
</script>
<!-- 遮罩层 -->
<div class="mermaid-overlay" id="mermaidOverlay"></div>
<script>
document.addEventListener('DOMContentLoaded', () => {
// 自动调整节点尺寸
const adjustNodeSize = () => {
document.querySelectorAll('.mermaid .node').forEach(node => {
const rect = node.querySelector('rect');
const text = node.querySelector('text');
if (rect && text) {
const bbox = text.getBBox();
const padding = 16;
const minWidth = parseFloat(rect.getAttribute('width')) || 160;
const newWidth = Math.max(bbox.width + padding, minWidth);
rect.setAttribute('width', newWidth);
}
});
};
// 初始化调整
adjustNodeSize();
window.addEventListener('resize', adjustNodeSize);
// 为每个mermaid图表创建独立控制器
document.querySelectorAll('.mermaid-container').forEach(container => {
let currentScale = 1;
let initialClickX = null, initialClickY = null;
let dragOffsetX = 0, dragOffsetY = 0;
let isDragging = false;
let dragStartX = 0, dragStartY = 0;
let isZoomed = false;
const mermaidElement = container.querySelector('.mermaid');
const overlay = document.getElementById('mermaidOverlay');
const originalParent = container.parentElement;
const originalNextSibling = container.nextElementSibling;
// 应用变换
const applyScale = () => {
if (isZoomed && initialClickX !== null && initialClickY !== null) {
const containerRect = container.getBoundingClientRect();
const centerX = containerRect.width / 2;
const centerY = containerRect.height / 2;
const baseTranslateX = centerX - initialClickX * currentScale;
const baseTranslateY = centerY - initialClickY * currentScale;
const translateX = baseTranslateX + dragOffsetX;
const translateY = baseTranslateY + dragOffsetY;
mermaidElement.style.transform = `translate(${translateX}px, ${translateY}px) scale(${currentScale})`;
} else {
mermaidElement.style.transform = `scale(${currentScale})`;
}
};
// 进入放大模式
const handleContainerClick = (e) => {
if (!isZoomed) {
isZoomed = true;
container.classList.add('zoomed');
overlay.style.display = 'flex';
overlay.appendChild(container);
const containerRect = container.getBoundingClientRect();
initialClickX = e.clientX - containerRect.left;
initialClickY = e.clientY - containerRect.top;
dragOffsetX = 0;
dragOffsetY = 0;
const scaleX = window.innerWidth / containerRect.width;
const scaleY = window.innerHeight / containerRect.height;
currentScale = Math.min(scaleX, scaleY, 5);
applyScale();
}
};
// 退出放大模式
const exitZoom = () => {
if (isZoomed) {
isZoomed = false;
container.classList.remove('zoomed');
overlay.style.display = 'none';
if (originalNextSibling) {
originalParent.insertBefore(container, originalNextSibling);
} else {
originalParent.appendChild(container);
}
currentScale = 1;
initialClickX = null;
initialClickY = null;
dragOffsetX = 0;
dragOffsetY = 0;
applyScale();
}
};
// 滚轮事件处理
const handleWheel = (e) => {
if (isZoomed) {
e.preventDefault();
const sensitivity = 0.0006;
const delta = e.deltaY || e.wheelDelta;
const scaleDelta = 1 + (-delta * sensitivity);
currentScale = Math.min(Math.max(0.3, currentScale * scaleDelta), 5);
applyScale();
} else if (e.ctrlKey) {
e.preventDefault();
const sensitivity = 0.0006;
const delta = e.deltaY || e.wheelDelta;
const scaleDelta = 1 + (-delta * sensitivity);
currentScale = Math.min(Math.max(0.3, currentScale * scaleDelta), 5);
applyScale();
}
};
// 事件绑定
container.addEventListener('click', (e) => {
if (!isZoomed) handleContainerClick(e);
});
container.addEventListener('dblclick', exitZoom);
container.addEventListener('wheel', handleWheel);
// 拖拽处理
container.addEventListener('mousedown', (e) => {
if (isZoomed) {
isDragging = true;
dragStartX = e.clientX;
dragStartY = e.clientY;
container.style.cursor = 'grabbing';
}
});
const handleMouseMove = (e) => {
if (isDragging) {
const deltaX = e.clientX - dragStartX;
const deltaY = e.clientY - dragStartY;
dragOffsetX += deltaX;
dragOffsetY += deltaY;
dragStartX = e.clientX;
dragStartY = e.clientY;
applyScale();
}
};
const handleMouseUp = () => {
isDragging = false;
container.style.cursor = 'grab';
};
document.addEventListener('mousemove', handleMouseMove);
document.addEventListener('mouseup', handleMouseUp);
});
// 全局ESC按键监听
document.addEventListener('keydown', (e) => {
if (e.key === 'Escape') {
document.querySelectorAll('.mermaid-container').forEach(container => {
if (container.classList.contains('zoomed')) {
container.dispatchEvent(new Event('dblclick'));
}
});
}
});
});
</script>
{{- end -}}
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