import { keys, map } from '../core/util';
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import { encodeHTML } from '../core/dom';
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export type CSSSelectorVNode = Record<string, string>
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export type CSSAnimationVNode = Record<string, Record<string, string>>
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export const SVGNS = 'http://www.w3.org/2000/svg';
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export const XLINKNS = 'http://www.w3.org/1999/xlink';
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export const XMLNS = 'http://www.w3.org/2000/xmlns/';
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export const XML_NAMESPACE = 'http://www.w3.org/XML/1998/namespace';
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export const META_DATA_PREFIX = 'ecmeta_';
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export function createElement(name: string) {
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return document.createElementNS(SVGNS, name);
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}
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export type SVGVNodeAttrs = Record<string, string | number | undefined | boolean>
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export interface SVGVNode {
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tag: string,
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attrs: SVGVNodeAttrs,
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children?: SVGVNode[],
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text?: string
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// For patching
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elm?: Node
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key: string
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};
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export function createVNode(
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tag: string,
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key: string,
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attrs?: SVGVNodeAttrs,
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children?: SVGVNode[],
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text?: string
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): SVGVNode {
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return {
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tag,
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attrs: attrs || {},
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children,
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text,
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key
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};
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}
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function createElementOpen(name: string, attrs?: SVGVNodeAttrs) {
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const attrsStr: string[] = [];
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if (attrs) {
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// eslint-disable-next-line
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for (let key in attrs) {
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const val = attrs[key];
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let part = key;
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// Same with the logic in patch.
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if (val === false) {
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continue;
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}
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else if (val !== true && val != null) {
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part += `="${val}"`;
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}
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attrsStr.push(part);
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}
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}
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return `<${name} ${attrsStr.join(' ')}>`;
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}
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function createElementClose(name: string) {
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return `</${name}>`;
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}
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export function vNodeToString(el: SVGVNode, opts?: {
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newline?: boolean
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}) {
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opts = opts || {};
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const S = opts.newline ? '\n' : '';
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function convertElToString(el: SVGVNode): string {
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const {children, tag, attrs, text} = el;
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return createElementOpen(tag, attrs)
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+ (tag !== 'style' ? encodeHTML(text) : text || '')
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+ (children ? `${S}${map(children, child => convertElToString(child)).join(S)}${S}` : '')
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+ createElementClose(tag);
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}
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return convertElToString(el);
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}
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export function getCssString(
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selectorNodes: Record<string, CSSSelectorVNode>,
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animationNodes: Record<string, CSSAnimationVNode>,
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opts?: {
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newline?: boolean
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}
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) {
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opts = opts || {};
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const S = opts.newline ? '\n' : '';
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const bracketBegin = ` {${S}`;
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const bracketEnd = `${S}}`;
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const selectors = map(keys(selectorNodes), className => {
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return className + bracketBegin + map(keys(selectorNodes[className]), attrName => {
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return `${attrName}:${selectorNodes[className][attrName]};`;
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}).join(S) + bracketEnd;
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}).join(S);
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const animations = map(keys(animationNodes), (animationName) => {
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return `@keyframes ${animationName}${bracketBegin}` + map(keys(animationNodes[animationName]), percent => {
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return percent + bracketBegin + map(keys(animationNodes[animationName][percent]), attrName => {
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let val = animationNodes[animationName][percent][attrName];
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// postprocess
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if (attrName === 'd') {
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val = `path("${val}")`;
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}
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return `${attrName}:${val};`;
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}).join(S) + bracketEnd;
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}).join(S) + bracketEnd;
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}).join(S);
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if (!selectors && !animations) {
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return '';
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}
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return ['<![CDATA[', selectors, animations, ']]>'].join(S);
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}
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export interface BrushScope {
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zrId: string
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shadowCache: Record<string, string>
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gradientCache: Record<string, string>
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patternCache: Record<string, string>
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clipPathCache: Record<string, string>
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defs: Record<string, SVGVNode>
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cssNodes: Record<string, CSSSelectorVNode>
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cssAnims: Record<string, Record<string, Record<string, string>>>
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/**
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* Cache for css style string, mapping from style string to class name.
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*/
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cssStyleCache: Record<string, string>
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cssAnimIdx: number
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shadowIdx: number
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gradientIdx: number
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patternIdx: number
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clipPathIdx: number
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// configs
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/**
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* If create animates nodes.
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*/
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animation?: boolean,
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/**
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* If create emphasis styles.
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*/
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emphasis?: boolean,
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/**
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* If will update. Some optimization for string generation can't be applied.
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*/
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willUpdate?: boolean
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/**
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* If compress the output string.
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*/
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compress?: boolean
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ssr?: boolean
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}
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export function createBrushScope(zrId: string): BrushScope {
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return {
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zrId,
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shadowCache: {},
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patternCache: {},
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gradientCache: {},
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clipPathCache: {},
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defs: {},
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cssNodes: {},
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cssAnims: {},
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cssStyleCache: {},
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cssAnimIdx: 0,
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shadowIdx: 0,
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gradientIdx: 0,
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patternIdx: 0,
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clipPathIdx: 0
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};
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}
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export function createSVGVNode(
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width: number | string,
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height: number | string,
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children?: SVGVNode[],
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useViewBox?: boolean
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) {
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return createVNode(
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'svg',
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'root',
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{
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'width': width,
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'height': height,
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'xmlns': SVGNS,
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'xmlns:xlink': XLINKNS,
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'version': '1.1',
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'baseProfile': 'full',
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'viewBox': useViewBox ? `0 0 ${width} ${height}` : false
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},
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children
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);
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}
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