Mirrors/Stirling-PDF
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This commit is contained in:
Anthony Stirling 2025-11-11 22:06:30 +00:00
parent 7220db0ac2
commit 3bc8ae1cf2
1 changed files with 85 additions and 25 deletions
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110
frontend/src/proprietary/components/tools/pdfJsonEditor/PdfJsonEditorView.tsx
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@ -147,6 +147,48 @@ const setCaretOffset = (element: HTMLElement, offset: number): void => {
selection.addRange(range);
};
const extractTextWithSoftBreaks = (element: HTMLElement): { text: string; insertedBreaks: boolean } => {
const normalized = element.innerText.replace(/\u00A0/g, ' ');
if (!element.isConnected) {
return { text: normalized, insertedBreaks: false };
}
const walker = document.createTreeWalker(element, NodeFilter.SHOW_TEXT, null);
const range = document.createRange();
let result = '';
let previousTop: number | null = null;
let insertedBreaks = false;
while (walker.nextNode()) {
const node = walker.currentNode as Text;
const nodeText = node.textContent ?? '';
for (let index = 0; index < nodeText.length; index += 1) {
const char = nodeText[index];
range.setStart(node, index);
range.setEnd(node, index + 1);
const rect = range.getClientRects()[0];
if (previousTop !== null && rect && Math.abs(rect.top - previousTop) > 0.5 && result[result.length - 1] !== '\n') {
result += '\n';
insertedBreaks = true;
}
result += char;
if (rect) {
previousTop = rect.top;
}
if (char === '\n') {
previousTop = null;
}
}
}
return {
text: result.replace(/\u00A0/g, ' '),
insertedBreaks,
};
};
interface PdfJsonEditorViewProps {
data: PdfJsonEditorViewData;
}
@ -314,26 +356,6 @@ const PdfJsonEditorView = ({ data }: PdfJsonEditorViewProps) => {
onGroupingModeChange,
} = data;
const syncEditorValue = useCallback(
(element: HTMLElement, pageIndex: number, groupId: string) => {
const value = element.innerText.replace(/\u00A0/g, ' ');
const offset = getCaretOffset(element);
caretOffsetsRef.current.set(groupId, offset);
onGroupEdit(pageIndex, groupId, value);
requestAnimationFrame(() => {
if (editingGroupId !== groupId) {
return;
}
const editor = editorRefs.current.get(groupId);
if (editor) {
const savedOffset = caretOffsetsRef.current.get(groupId) ?? editor.innerText.length;
setCaretOffset(editor, savedOffset);
}
});
},
[editingGroupId, onGroupEdit],
);
const resolveFont = (fontId: string | null | undefined, pageIndex: number | null | undefined): PdfJsonFont | null => {
if (!fontId || !pdfDocument?.fonts) {
return null;
@ -501,6 +523,39 @@ const PdfJsonEditorView = ({ data }: PdfJsonEditorViewProps) => {
// Detect if current page contains paragraph-heavy content
const isParagraphPage = useMemo(() => analyzePageContentType(pageGroups), [pageGroups]);
const isParagraphLayout =
externalGroupingMode === 'paragraph' || (externalGroupingMode === 'auto' && isParagraphPage);
const paragraphWhiteSpace = isParagraphLayout ? 'pre-wrap' : 'pre';
const paragraphWordBreak = isParagraphLayout ? 'break-word' : 'normal';
const paragraphOverflowWrap = isParagraphLayout ? 'break-word' : 'normal';
const syncEditorValue = useCallback(
(
element: HTMLElement,
pageIndex: number,
groupId: string,
options?: { skipCaretRestore?: boolean },
) => {
const { text: value } = extractTextWithSoftBreaks(element);
const offset = getCaretOffset(element);
caretOffsetsRef.current.set(groupId, offset);
onGroupEdit(pageIndex, groupId, value);
if (options?.skipCaretRestore) {
return;
}
requestAnimationFrame(() => {
if (editingGroupId !== groupId) {
return;
}
const editor = editorRefs.current.get(groupId);
if (editor) {
const savedOffset = caretOffsetsRef.current.get(groupId) ?? editor.innerText.length;
setCaretOffset(editor, savedOffset);
}
});
},
[editingGroupId, onGroupEdit],
);
const extractPreferredFontId = useCallback((target?: TextGroup | null) => {
if (!target) {
@ -1565,11 +1620,12 @@ const PdfJsonEditorView = ({ data }: PdfJsonEditorViewProps) => {
event.stopPropagation();
}}
onBlur={(event) => {
const value = event.currentTarget.innerText.replace(/\u00A0/g, ' ');
syncEditorValue(event.currentTarget, group.pageIndex, group.id, {
skipCaretRestore: true,
});
caretOffsetsRef.current.delete(group.id);
editorRefs.current.delete(group.id);
setActiveGroupId(null);
onGroupEdit(group.pageIndex, group.id, value);
setEditingGroupId(null);
}}
onInput={(event) => {
@ -1589,7 +1645,9 @@ const PdfJsonEditorView = ({ data }: PdfJsonEditorViewProps) => {
outline: 'none',
border: 'none',
display: 'block',
whiteSpace: 'pre',
whiteSpace: paragraphWhiteSpace,
wordBreak: paragraphWordBreak,
overflowWrap: paragraphOverflowWrap,
cursor: 'text',
overflow: 'visible',
}}
@ -1617,7 +1675,9 @@ const PdfJsonEditorView = ({ data }: PdfJsonEditorViewProps) => {
width: '100%',
minHeight: '100%',
padding: 0,
whiteSpace: 'pre',
whiteSpace: paragraphWhiteSpace,
wordBreak: paragraphWordBreak,
overflowWrap: paragraphOverflowWrap,
fontSize: `${fontSizePx}px`,
fontFamily,
fontWeight,
@ -1635,7 +1695,7 @@ const PdfJsonEditorView = ({ data }: PdfJsonEditorViewProps) => {
display: 'inline-block',
transform: shouldScale ? `scaleX(${textScale})` : 'none',
transformOrigin: 'left center',
whiteSpace: 'pre',
whiteSpace: paragraphWhiteSpace,
}}
>
{group.text || '\u00A0'}