f.weber/homebrewery
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Let brewRenderer pass changes up, and inherit values down

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This commit is contained in:
Trevor Buckner
2024-09-14 18:50:38 -04:00
parent 7e776df4d4
commit fa2874b18f
1 changed files with 28 additions and 29 deletions
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57
client/homebrew/brewRenderer/brewRenderer.jsx
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@@ -1,7 +1,7 @@
/*eslint max-lines: ["warn", {"max": 300, "skipBlankLines": true, "skipComments": true}]*/
require('./brewRenderer.less');
const React = require('react');
const { useState, useRef, useEffect } = React;
const { useState, useRef, useEffect, useCallback } = React;
const _ = require('lodash');
const MarkdownLegacy = require('naturalcrit/markdownLegacy.js');
@@ -49,23 +49,25 @@ let rawPages = [];
const BrewRenderer = (props)=>{
props = {
text : '',
style : '',
renderer : 'legacy',
theme : '5ePHB',
lang : '',
errors : [],
currentEditorPage : 0,
themeBundle : {},
text : '',
style : '',
renderer : 'legacy',
theme : '5ePHB',
lang : '',
errors : [],
currentEditorCursorPageNum : 0,
currentEditorViewPageNum : 0,
currentBrewRendererPageNum : 0,
themeBundle : {},
onPageChange : ()=>{},
...props
};
const [state, setState] = useState({
height : PAGE_HEIGHT,
isMounted : false,
visibility : 'hidden',
zoom : 100,
currentPageNumber : 1,
height : PAGE_HEIGHT,
isMounted : false,
visibility : 'hidden',
zoom : 100
});
const mainRef = useRef(null);
@@ -87,25 +89,22 @@ const BrewRenderer = (props)=>{
}));
};
const getCurrentPage = (e)=>{
const { scrollTop, clientHeight, scrollHeight } = e.target;
const totalScrollableHeight = scrollHeight - clientHeight;
const currentPageNumber = Math.ceil((scrollTop / totalScrollableHeight) * rawPages.length);
const updateCurrentPage = useCallback(_.throttle((e) => {
const { scrollTop, clientHeight, scrollHeight } = e.target;
const totalScrollableHeight = scrollHeight - clientHeight;
const currentPageNumber = Math.ceil(((scrollTop + 1) / totalScrollableHeight) * rawPages.length);
setState((prevState)=>({
...prevState,
currentPageNumber : currentPageNumber || 1
}));
};
props.onPageChange(currentPageNumber);
}, 200), []);
const isInView = (index)=>{
if(!state.isMounted)
return false;
if(index == props.currentEditorPage) //Already rendered before this step
if(index == props.currentEditorCursorPageNum - 1) //Already rendered before this step
return false;
if(Math.abs(index - state.currentPageNumber) <= 3)
if(Math.abs(index - props.currentBrewRendererPageNum - 1) <= 3)
return true;
return false;
@@ -142,7 +141,7 @@ const BrewRenderer = (props)=>{
renderedPages.length = 0;
// Render currently-edited page first so cross-page effects (variables, links) can propagate out first
renderedPages[props.currentEditorPage] = renderPage(rawPages[props.currentEditorPage], props.currentEditorPage);
renderedPages[props.currentEditorCursorPageNum - 1] = renderPage(rawPages[props.currentEditorCursorPageNum - 1], props.currentEditorCursorPageNum - 1);
_.forEach(rawPages, (page, index)=>{
if((isInView(index) || !renderedPages[index]) && typeof window !== 'undefined'){
@@ -192,7 +191,7 @@ const BrewRenderer = (props)=>{
<>
{/*render dummy page while iFrame is mounting.*/}
{!state.isMounted
? <div className='brewRenderer' onScroll={getCurrentPage}>
? <div className='brewRenderer' onScroll={updateCurrentPage}>
<div className='pages'>
{renderDummyPage(1)}
</div>
@@ -205,7 +204,7 @@ const BrewRenderer = (props)=>{
<NotificationPopup />
</div>
<ToolBar onZoomChange={handleZoom} currentPage={state.currentPageNumber} totalPages={rawPages.length}/>
<ToolBar onZoomChange={handleZoom} currentPage={props.currentBrewRendererPageNum} totalPages={rawPages.length}/>
{/*render in iFrame so broken code doesn't crash the site.*/}
<Frame id='BrewRenderer' initialContent={INITIAL_CONTENT}
@@ -214,7 +213,7 @@ const BrewRenderer = (props)=>{
onClick={()=>{emitClick();}}
>
<div className={'brewRenderer'}
onScroll={getCurrentPage}
onScroll={updateCurrentPage}
onKeyDown={handleControlKeys}
tabIndex={-1}
style={{ height: state.height }}>