Steffen Becker
af144362fe
ODF style:vertical-pos/-rel on an inline frame, which every LibreOffice formula image carries: baseline, character area, or a plain offset from the baseline. The default moves from the line-box bottom to the baseline, so a line with a picture in it keeps the descent below it, as LibreOffice and Word both do.
649 lines
27 KiB
TypeScript
649 lines
27 KiB
TypeScript
import { Node, mergeAttributes } from '@tiptap/core';
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import type { Editor } from '@tiptap/core';
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import type { Node as PMNode } from '@tiptap/pm/model';
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import { NodeSelection } from '@tiptap/pm/state';
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import { dropCursor } from '@tiptap/pm/dropcursor';
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import { cmToPx } from '../../storage/pageMargins';
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// Inline, as-character image, or a floating text-wrapped frame (wrap = flow mode);
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// width/height are doc px @96dpi, rotation CW degrees. Export → cm + ODF
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// draw:transform/style:wrap. A floating image floats at its anchor; drag re-anchors it.
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// 'inline' = as-character; 'left'/'right' = square wrap (text on the open side);
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// 'topBottom' = no side wrap (text only above/below).
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export type WrapMode = 'inline' | 'left' | 'right' | 'topBottom';
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declare module '@tiptap/core' {
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interface Commands<ReturnType> {
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image: {
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setImage: (attrs: { src: string; alt?: string; width?: number | null; height?: number | null; rotation?: number; wrap?: WrapMode }) => ReturnType;
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setImageWrap: (wrap: WrapMode) => ReturnType;
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};
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}
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}
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export const MIN_SIZE_PX = 24;
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// Corners keep aspect; edges (n/s/e/w) change one dimension only.
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// Shared with textBox.ts, whose node view uses the same handle set.
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export const HANDLES: { k: string; x: -1 | 0 | 1; y: -1 | 0 | 1; aspect: boolean }[] = [
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{ k: 'nw', x: -1, y: -1, aspect: true },
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{ k: 'n', x: 0, y: -1, aspect: false },
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{ k: 'ne', x: 1, y: -1, aspect: true },
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{ k: 'e', x: 1, y: 0, aspect: false },
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{ k: 'se', x: 1, y: 1, aspect: true },
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{ k: 's', x: 0, y: 1, aspect: false },
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{ k: 'sw', x: -1, y: 1, aspect: true },
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{ k: 'w', x: -1, y: 0, aspect: false },
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];
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export function parsePx(value: string | null): number | null {
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if (!value) return null;
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const n = parseFloat(value);
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return Number.isFinite(n) ? Math.round(n) : null;
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}
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function parseCm(value: string | null): number | null {
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if (!value) return null;
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const n = parseFloat(value);
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return Number.isFinite(n) ? n : null;
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}
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export const clamp = (v: number, lo: number, hi: number) => Math.max(lo, Math.min(hi, v));
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// The page text width, live from the vars the editor maintains (margins/orientation).
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const COLUMN_WIDTH_CSS =
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'calc(var(--user-page-width) - var(--user-margin-left) - var(--user-margin-right))';
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// An as-character image wider than the text column takes a line of its own and leaves an
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// empty one above it. Fitting it to the column is where an image the file sizes to the
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// column lands anyway, once its cm/EMU width is rounded to whole px (importers).
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export function fitInlineImage(attrs: Record<string, unknown>, maxWidthPx: number): void {
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const w = attrs.width;
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if (typeof w !== 'number' || w <= maxWidthPx) return;
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if (typeof attrs.height === 'number') attrs.height = Math.max(1, Math.round((attrs.height * maxWidthPx) / w));
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attrs.width = maxWidthPx;
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}
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// A floating frame's margins from its wrapOffset: its left edge in the text column,
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// measured against the live column vars an indented anchor cannot skew (a right float
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// is placed from the far side). wrapOffsetY becomes a top margin — see the attr's note.
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export function frameMargins(wrap: WrapMode, offsetCm: unknown, boxWidthPx: number, offsetYCm?: unknown): string {
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const near = typeof offsetCm === 'number' ? `${Math.round(cmToPx(offsetCm))}px` : null;
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// No vertical spacing of our own: LibreOffice and Word both wrap flush against a
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// frame unless the file declares a distance (fo:margin-top/-bottom, distT/distB).
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if (wrap === 'topBottom') {
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const top = typeof offsetYCm === 'number' && offsetYCm > 0 ? `${Math.round(cmToPx(offsetYCm))}px` : '0';
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return `${top} 0 0 ${near ?? '0'}`;
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}
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if (wrap === 'left') return `0 14px 0 ${near ?? '0'}`;
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const far = near == null ? '0' : `calc(${COLUMN_WIDTH_CSS} - ${near} - ${boxWidthPx}px)`;
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return `0 ${far} 0 14px`;
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}
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// Where an as-char frame sits against the line (ODF style:vertical-pos/-rel, probed
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// against LibreOffice): its bottom on the baseline by default, `text-*` against the
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// character area, `offset` its top wrapOffsetY cm below the baseline.
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export type InlineVAlign = 'middle' | 'below' | 'text-top' | 'text-middle' | 'text-bottom' | 'offset';
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export function inlineVerticalAlign(vAlign: unknown, boxHeightPx: number, offsetYCm: unknown): string {
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if (!boxHeightPx) return '';
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switch (vAlign) {
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case 'middle': return `${-boxHeightPx / 2}px`;
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case 'below': return `${-boxHeightPx}px`;
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case 'text-top': return 'text-top';
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case 'text-bottom': return 'text-bottom';
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// No CSS keyword centres on the character area; 0.36em stands in for half of
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// (ascent − descent), which Liberation Serif/Sans, Times and Arial all share.
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case 'text-middle': return `calc(0.36em - ${boxHeightPx / 2}px)`;
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case 'offset':
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return typeof offsetYCm === 'number' ? `${-(cmToPx(offsetYCm) + boxHeightPx)}px` : '';
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default: return '';
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}
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}
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// The page text height in px, capping how tall an image can be stretched. Read live
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// from the :root vars the editor maintains (orientation/margins change them).
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export function pageContentHeightPx(): number {
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const cs = getComputedStyle(document.documentElement);
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const h =
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parseFloat(cs.getPropertyValue('--user-page-height')) -
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parseFloat(cs.getPropertyValue('--user-margin-top')) -
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parseFloat(cs.getPropertyValue('--user-margin-bottom'));
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return h > 0 ? h : 4000;
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}
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export const Image = Node.create({
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name: 'image',
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group: 'inline',
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inline: true,
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atom: true,
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draggable: true,
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selectable: true,
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addAttributes() {
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return {
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src: { default: null },
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alt: { default: '' },
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// px @96dpi and CW degrees; kept off the width/height attrs (rendered via
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// inline style / data-rotation) so one place drives the node view.
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width: {
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default: null,
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parseHTML: el => parsePx(el.getAttribute('width') ?? (el as HTMLElement).style.width),
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renderHTML: () => ({}),
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},
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height: {
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default: null,
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parseHTML: el => parsePx(el.getAttribute('height') ?? (el as HTMLElement).style.height),
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renderHTML: () => ({}),
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},
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rotation: {
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default: 0,
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parseHTML: el => parsePx((el as HTMLElement).getAttribute('data-rotation')) ?? 0,
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renderHTML: () => ({}),
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},
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wrap: {
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default: 'inline',
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parseHTML: el => (el as HTMLElement).getAttribute('data-wrap') ?? 'inline',
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renderHTML: () => ({}),
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},
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// Where a floating frame sits in the text column: cm from the column's left edge
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// to the frame's left edge (Word's posOffset, ODF svg:x). null = flush to its side.
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wrapOffset: {
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default: null,
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parseHTML: el => parseCm((el as HTMLElement).getAttribute('data-wrap-offset')),
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renderHTML: () => ({}),
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},
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// How far below its anchor paragraph the frame sits, in cm (Word's positionV
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// posOffset, ODF svg:y). Drawn as the float's top margin for `topBottom`, where no
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// text sits beside the frame; a side float would push away lines Word keeps.
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wrapOffsetY: {
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default: null,
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parseHTML: el => parseCm((el as HTMLElement).getAttribute('data-wrap-offset-y')),
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renderHTML: () => ({}),
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},
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// The page a page-anchored frame is placed on (ODF text:anchor-page-number): a
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// cover graphic or a watermark, out of the text flow. wrapOffset/-Y are then the
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// frame's coordinates from that page's top-left corner, not from its column.
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anchorPage: {
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default: null,
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parseHTML: el => parsePx((el as HTMLElement).getAttribute('data-anchor-page')),
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renderHTML: () => ({}),
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},
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// Which end of its band a `topBottom` frame is set against (Word's positionH align,
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// ODF's style:horizontal-pos). Set only where two frames share the band, so they
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// sit side by side; a lone one fills the band, which is what the wrap means.
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wrapAlign: {
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default: null,
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parseHTML: el => (el as HTMLElement).getAttribute('data-wrap-align') || null,
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renderHTML: () => ({}),
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},
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// Where an as-char frame sits against the line (see inlineVerticalAlign).
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// null = its bottom on the baseline, which is LibreOffice's and Word's default.
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vAlign: {
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default: null,
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parseHTML: el => (el as HTMLElement).getAttribute('data-v-align') || null,
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renderHTML: () => ({}),
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},
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};
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},
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parseHTML() {
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return [{ tag: 'img[src]' }];
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},
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renderHTML({ HTMLAttributes, node }) {
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const w = node.attrs.width as number | null;
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const h = node.attrs.height as number | null;
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const rot = (node.attrs.rotation as number) || 0;
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const wrap = (node.attrs.wrap as WrapMode) || 'inline';
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const offset = node.attrs.wrapOffset as number | null;
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const offsetY = node.attrs.wrapOffsetY as number | null;
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const va = h ? inlineVerticalAlign(node.attrs.vAlign, h, offsetY) : '';
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const style = [
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w ? `width:${w}px` : '',
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h ? `height:${h}px` : '',
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rot ? `transform:rotate(${rot}deg)` : '',
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va ? `vertical-align:${va}` : '',
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].filter(Boolean).join(';');
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return ['img', mergeAttributes(HTMLAttributes, {
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...(style ? { style } : {}),
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...(rot ? { 'data-rotation': String(rot) } : {}),
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...(wrap !== 'inline' ? { 'data-wrap': wrap } : {}),
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...(offset != null ? { 'data-wrap-offset': String(offset) } : {}),
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...(offsetY != null ? { 'data-wrap-offset-y': String(offsetY) } : {}),
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...(node.attrs.wrapAlign ? { 'data-wrap-align': String(node.attrs.wrapAlign) } : {}),
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...(node.attrs.vAlign ? { 'data-v-align': String(node.attrs.vAlign) } : {}),
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...(node.attrs.anchorPage ? { 'data-anchor-page': String(node.attrs.anchorPage) } : {}),
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})];
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},
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addCommands() {
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return {
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setImage:
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attrs =>
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({ commands }) =>
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commands.insertContent({ type: this.name, attrs }),
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// Set the wrap mode on the selected image.
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setImageWrap:
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(wrap: WrapMode) =>
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({ state, dispatch }) => {
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const sel = state.selection;
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if (!(sel instanceof NodeSelection) || sel.node.type.name !== this.name) return false;
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// Picking a side means "put it there", so the imported offset goes with it.
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if (dispatch) dispatch(state.tr.setNodeMarkup(sel.from, undefined, { ...sel.node.attrs, wrap, wrapOffset: null, wrapOffsetY: null }));
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return true;
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},
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};
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},
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addNodeView() {
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return ({ node, editor, getPos }) => new ImageView(node as PMNode, editor, getPos as () => number);
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},
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// The drop cursor paints a caret where a dragged-in image *file* lands; moving an
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// existing image uses the node view's live re-anchor drag, not PM's native node move.
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addProseMirrorPlugins() {
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return [dropCursor({ color: '#3b82f6', width: 2 })];
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},
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});
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// Node view: a bounding-box wrapper (reserves the rotated footprint for text flow)
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// holds a centered, rotated "rotor" with the <img>, eight resize handles (corners
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// aspect-locked, edges single-axis) and a rotate grip — all rotating with the image.
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class ImageView {
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dom: HTMLElement;
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private rotor: HTMLElement;
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private img: HTMLImageElement;
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private badge: HTMLElement;
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private node: PMNode;
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private editor: Editor;
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private getPos: () => number;
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constructor(node: PMNode, editor: Editor, getPos: () => number) {
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this.node = node;
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this.editor = editor;
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this.getPos = getPos;
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this.dom = document.createElement('span');
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this.dom.className = 'image-node';
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this.rotor = document.createElement('span');
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this.rotor.className = 'image-rotor';
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this.img = document.createElement('img');
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this.img.src = (node.attrs.src as string) ?? '';
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this.img.alt = (node.attrs.alt as string) ?? '';
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// Pasted/HTML images may arrive without dimensions; adopt their natural size
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// (capped to the text column) so every image is explicitly sized.
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this.img.onload = () => this.adoptNaturalSize();
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// Dragging an image live re-anchors it to the text position under the cursor so the
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// surrounding text reflows in real time — inline and floating alike.
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this.img.addEventListener('mousedown', e => this.startReposition(e as MouseEvent));
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this.rotor.appendChild(this.img);
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for (const cfg of HANDLES) {
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const h = document.createElement('span');
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h.className = `image-resize-handle image-resize-${cfg.k}`;
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h.addEventListener('mousedown', e => this.startResize(e as MouseEvent, cfg));
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this.rotor.appendChild(h);
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}
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const rot = document.createElement('span');
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rot.className = 'image-rotate-handle';
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rot.addEventListener('mousedown', e => this.startRotate(e as MouseEvent));
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this.rotor.appendChild(rot);
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this.dom.appendChild(this.rotor);
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// Live "Width … × Height …" readout shown while resizing (on the axis-aligned
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// wrapper so it stays upright even when the image is rotated).
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this.badge = document.createElement('span');
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this.badge.className = 'image-size-badge';
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this.dom.appendChild(this.badge);
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this.applyLayout(this.attrW(), this.attrH(), this.attrRot());
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this.applyWrap();
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// The frame is not in the document yet, so a sunk one has nothing to measure against.
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requestAnimationFrame(() => this.sinkToOffset());
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}
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private showBadge(w: number, h: number): void {
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const cm = (px: number) => ((px * 2.54) / 96).toFixed(2);
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this.badge.textContent = `Width ${cm(w)} cm × Height ${cm(h)} cm`;
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this.badge.style.display = 'block';
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}
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private attrW(): number | null { const w = this.node.attrs.width; return typeof w === 'number' ? w : null; }
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private attrH(): number | null { const h = this.node.attrs.height; return typeof h === 'number' ? h : null; }
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private attrRot(): number { return (this.node.attrs.rotation as number) || 0; }
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private attrWrap(): WrapMode { const w = this.node.attrs.wrap; return w === 'left' || w === 'right' || w === 'topBottom' ? w : 'inline'; }
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// The wrapper's reserved (rotated) width, which applyLayout has just written.
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private boxWidth(): number { return parseFloat(this.dom.style.width) || this.attrW() || 0; }
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// Size the rotor to w×h, rotate it about its centre, and grow the axis-aligned
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// wrapper to the rotated bounding box so the line reserves the right space.
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private applyLayout(w: number | null, h: number | null, deg: number): void {
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if (w && h) {
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this.rotor.style.width = `${w}px`;
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this.rotor.style.height = `${h}px`;
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const rad = (deg * Math.PI) / 180;
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const bw = Math.abs(w * Math.cos(rad)) + Math.abs(h * Math.sin(rad));
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const bh = Math.abs(w * Math.sin(rad)) + Math.abs(h * Math.cos(rad));
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this.dom.style.width = `${bw}px`;
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this.dom.style.height = `${bh}px`;
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this.dom.style.verticalAlign =
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inlineVerticalAlign(this.node.attrs.vAlign, bh, this.node.attrs.wrapOffsetY);
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} else {
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this.rotor.style.width = '';
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this.rotor.style.height = '';
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this.dom.style.width = '';
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this.dom.style.height = '';
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this.dom.style.verticalAlign = '';
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}
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this.rotor.style.transform = `translate(-50%, -50%) rotate(${deg}deg)`;
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}
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// Float the wrapper per wrap mode so text flows beside it at its anchor paragraph
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// (left/right) or only above/below it (topBottom). The live re-anchor drag keeps it
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// where the text is.
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private applyWrap(): void {
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const d = this.dom;
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const wrap = this.attrWrap();
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// Mirrors renderHTML's data-wrap, so one selector reaches a floating frame in the
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// live view and in generated static HTML alike.
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if (wrap === 'inline') delete d.dataset.wrap; else d.dataset.wrap = wrap;
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d.style.float = '';
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d.style.display = '';
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d.style.clear = '';
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d.style.margin = '';
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d.style.position = '';
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d.style.zIndex = '';
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d.style.top = '';
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d.style.left = '';
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const a = this.node.attrs;
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if (typeof a.anchorPage === 'number' && a.anchorPage > 0) {
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this.applyPageAnchor(a.anchorPage);
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return;
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}
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delete d.dataset.anchorPage;
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if (wrap === 'left' || wrap === 'right') {
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d.style.float = wrap;
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d.style.margin = frameMargins(wrap, a.wrapOffset, this.boxWidth());
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} else if (wrap === 'topBottom' && (a.wrapAlign === 'left' || a.wrapAlign === 'right')) {
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// Sharing its band with the frame set against the other end (the importers only
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// keep wrapAlign for such a pair): each floats to its own side, so both fit.
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d.style.float = a.wrapAlign;
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d.style.clear = a.wrapAlign;
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d.style.margin = frameMargins(wrap, null, 0, a.wrapOffsetY);
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this.sinkToOffset();
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} else if (wrap === 'topBottom') {
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// A full-width float (not display:block — which on an inline atom node view
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// disrupts ProseMirror's view + page-break spacer widgets): text can only flow
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// above/below it. applyLayout reset the width to the box; widen to the column here.
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d.style.float = 'left';
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d.style.clear = 'both';
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d.style.width = '100%';
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d.style.margin = frameMargins(wrap, null, 0, a.wrapOffsetY);
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this.sinkToOffset();
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}
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// The wrapper spans the column, so the picture's own x is the rotor's place in it
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// (the rotor is centred by CSS); every other mode positions the wrapper itself.
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const x = wrap === 'topBottom' && !a.wrapAlign ? a.wrapOffset : null;
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this.rotor.style.left = typeof x === 'number'
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? `${Math.round(cmToPx(x)) + (parseFloat(this.rotor.style.width) || 0) / 2}px` : '';
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}
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// Placed from its page's top-left corner (--page-cycle is the page plus the gap) and
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// behind the text, like the header layer's page background. Its paragraph collapses to
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// nothing (editor.css), so the frame takes no flow space.
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private applyPageAnchor(page: number): void {
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const d = this.dom;
|
||
d.dataset.anchorPage = String(page);
|
||
const px = (cm: unknown) => Math.round(cmToPx(typeof cm === 'number' ? cm : 0));
|
||
d.style.position = 'absolute';
|
||
d.style.zIndex = '-1';
|
||
d.style.left = `${px(this.node.attrs.wrapOffset)}px`;
|
||
d.style.top = `calc(${page - 1} * var(--page-cycle) + ${px(this.node.attrs.wrapOffsetY)}px)`;
|
||
}
|
||
|
||
// The offset counts from the anchor paragraph's top. Where text precedes the frame
|
||
// (the importers sink one behind the text — a full-width float pushes every following
|
||
// line under itself) the lines already cover part of it, so the rest is measured.
|
||
private sinkToOffset(): void {
|
||
const y = this.node.attrs.wrapOffsetY;
|
||
const p = this.dom.parentElement;
|
||
if (typeof y !== 'number' || y <= 0 || !p || !this.dom.previousSibling) return;
|
||
this.dom.style.marginTop = '0px';
|
||
const box = p.getBoundingClientRect();
|
||
const scale = box.width / p.offsetWidth || 1;
|
||
const above = (this.dom.getBoundingClientRect().top - box.top) / scale;
|
||
const gap = clamp(Math.round(cmToPx(y) - above), 6, pageContentHeightPx());
|
||
this.dom.style.marginTop = `${gap}px`;
|
||
}
|
||
|
||
// Drag an image to re-anchor it live to the text position under the cursor (text
|
||
// reflows in real time, throttled): a float re-anchors on a line change, an inline
|
||
// image to the exact character. One undo step (later moves are addToHistory:false).
|
||
private startReposition(event: MouseEvent): void {
|
||
if (!this.editor.isEditable) return;
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
const view = this.editor.view;
|
||
const origPos = this.getPos();
|
||
if (typeof origPos !== 'number') return;
|
||
const win = this.dom.ownerDocument.defaultView ?? window;
|
||
|
||
let curPos = origPos;
|
||
let firstMove = true;
|
||
let moved = false;
|
||
let raf = 0;
|
||
let lastX = event.clientX;
|
||
let lastY = event.clientY;
|
||
|
||
const lineTop = (pos: number): number | null => {
|
||
try { return view.coordsAtPos(pos).top; } catch { return null; }
|
||
};
|
||
|
||
// Re-anchor the image at the exact text position under the cursor (so it follows
|
||
// line by line, not paragraph by paragraph), but only when the cursor's line differs
|
||
// from the image's current line — a float won't move within a line, so skip churn.
|
||
const step = (): void => {
|
||
raf = 0;
|
||
const found = view.posAtCoords({ left: lastX, top: lastY });
|
||
if (!found) return;
|
||
const target = found.pos;
|
||
if (target === curPos || target === curPos + 1) return;
|
||
const $t = view.state.doc.resolve(target);
|
||
if (!$t.parent.isTextblock) return;
|
||
// A float can't move within a line — skip re-anchoring until the cursor's line
|
||
// changes; an inline image follows the cursor to the exact position.
|
||
if (this.attrWrap() !== 'inline') {
|
||
const curY = lineTop(curPos);
|
||
const tgtY = lineTop(target);
|
||
if (curY != null && tgtY != null && Math.abs(curY - tgtY) < 6) return;
|
||
}
|
||
const node = view.state.doc.nodeAt(curPos);
|
||
if (!node || node.type.name !== 'image') return;
|
||
try {
|
||
const tr = view.state.tr;
|
||
tr.delete(curPos, curPos + node.nodeSize);
|
||
const ip = tr.mapping.map(target);
|
||
tr.insert(ip, node);
|
||
tr.setSelection(NodeSelection.create(tr.doc, ip));
|
||
if (!firstMove) tr.setMeta('addToHistory', false);
|
||
view.dispatch(tr);
|
||
curPos = ip;
|
||
firstMove = false;
|
||
moved = true;
|
||
} catch { /* target can't hold an inline image — ignore */ }
|
||
};
|
||
|
||
const move = (e: MouseEvent): void => {
|
||
if (!e.buttons) { finish(); return; }
|
||
lastX = e.clientX;
|
||
lastY = e.clientY;
|
||
if (!raf) raf = win.requestAnimationFrame(step);
|
||
};
|
||
const finish = (): void => {
|
||
if (raf) win.cancelAnimationFrame(raf);
|
||
win.removeEventListener('mousemove', move);
|
||
win.removeEventListener('mouseup', finish);
|
||
// A plain click (no move) just selects the image so its toolbar/handles show.
|
||
if (!moved && typeof this.getPos() === 'number') {
|
||
const pos = this.getPos();
|
||
view.dispatch(view.state.tr.setSelection(NodeSelection.create(view.state.doc, pos)));
|
||
}
|
||
};
|
||
win.addEventListener('mousemove', move);
|
||
win.addEventListener('mouseup', finish);
|
||
}
|
||
|
||
private adoptNaturalSize(): void {
|
||
if (this.attrW() != null && this.attrH() != null) return;
|
||
const nw = this.img.naturalWidth;
|
||
const nh = this.img.naturalHeight;
|
||
if (!nw || !nh) return;
|
||
const maxW = this.boxMaxWidth();
|
||
let w = nw;
|
||
let h = nh;
|
||
if (w > maxW) { h = Math.round((h * maxW) / w); w = maxW; }
|
||
this.commit({ width: Math.round(w), height: Math.round(h) });
|
||
}
|
||
|
||
// Largest width an image may take: the containing cell, else the page text column.
|
||
private boxMaxWidth(): number {
|
||
const box = (this.dom.closest('td,th') ?? this.dom.closest('.tiptap')) as HTMLElement | null;
|
||
if (!box) return 10000;
|
||
const cs = getComputedStyle(box);
|
||
const w = box.clientWidth - parseFloat(cs.paddingLeft || '0') - parseFloat(cs.paddingRight || '0');
|
||
return Math.max(MIN_SIZE_PX, w || 10000);
|
||
}
|
||
|
||
private commit(attrs: Record<string, unknown>): void {
|
||
const pos = this.getPos();
|
||
if (typeof pos !== 'number') return;
|
||
this.editor.view.dispatch(this.editor.state.tr.setNodeMarkup(pos, undefined, { ...this.node.attrs, ...attrs }));
|
||
}
|
||
|
||
private startResize(event: MouseEvent, cfg: typeof HANDLES[number]): void {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
if (!this.editor.isEditable) return;
|
||
|
||
const startW = this.rotor.offsetWidth;
|
||
const startH = this.rotor.offsetHeight;
|
||
if (!startW || !startH) return;
|
||
const aspect = startW / startH;
|
||
const deg = this.attrRot();
|
||
const th = (deg * Math.PI) / 180;
|
||
const cosT = Math.cos(th);
|
||
const sinT = Math.sin(th);
|
||
// The wrapper is axis-aligned, so its scaled/unscaled width ratio is the zoom.
|
||
const zoom = this.dom.getBoundingClientRect().width / this.dom.offsetWidth || 1;
|
||
const maxW = this.boxMaxWidth();
|
||
const maxH = pageContentHeightPx();
|
||
const sx = event.clientX;
|
||
const sy = event.clientY;
|
||
const win = this.dom.ownerDocument.defaultView ?? window;
|
||
let lastW = startW;
|
||
let lastH = startH;
|
||
let moved = false;
|
||
|
||
const move = (e: MouseEvent): void => {
|
||
if (!e.buttons) { finish(); return; }
|
||
// Un-rotate the screen delta onto the image's own axes so handles track the
|
||
// pointer at any rotation.
|
||
const dx = (e.clientX - sx) / zoom;
|
||
const dy = (e.clientY - sy) / zoom;
|
||
const lx = dx * cosT + dy * sinT;
|
||
const ly = -dx * sinT + dy * cosT;
|
||
if (cfg.aspect) {
|
||
let w = clamp(startW + cfg.x * lx, MIN_SIZE_PX, maxW);
|
||
let h = w / aspect;
|
||
if (h > maxH) { h = maxH; w = h * aspect; }
|
||
lastW = Math.round(w);
|
||
lastH = Math.round(h);
|
||
} else {
|
||
if (cfg.x) lastW = Math.round(clamp(startW + cfg.x * lx, MIN_SIZE_PX, maxW));
|
||
if (cfg.y) lastH = Math.round(clamp(startH + cfg.y * ly, MIN_SIZE_PX, maxH));
|
||
}
|
||
moved = true;
|
||
this.applyLayout(lastW, lastH, deg);
|
||
this.applyWrap();
|
||
this.showBadge(lastW, lastH);
|
||
};
|
||
const finish = (): void => {
|
||
win.removeEventListener('mousemove', move);
|
||
win.removeEventListener('mouseup', finish);
|
||
this.badge.style.display = 'none';
|
||
if (moved) this.commit({ width: lastW, height: lastH });
|
||
};
|
||
win.addEventListener('mousemove', move);
|
||
win.addEventListener('mouseup', finish);
|
||
}
|
||
|
||
private startRotate(event: MouseEvent): void {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
if (!this.editor.isEditable) return;
|
||
|
||
const w = this.rotor.offsetWidth;
|
||
const h = this.rotor.offsetHeight;
|
||
const rect = this.dom.getBoundingClientRect();
|
||
const cx = rect.left + rect.width / 2;
|
||
const cy = rect.top + rect.height / 2;
|
||
const win = this.dom.ownerDocument.defaultView ?? window;
|
||
let lastDeg = this.attrRot();
|
||
let moved = false;
|
||
|
||
const move = (e: MouseEvent): void => {
|
||
if (!e.buttons) { finish(); return; }
|
||
// Handle sits above centre, so 0° is straight up; Shift snaps to 15°.
|
||
let ang = (Math.atan2(e.clientY - cy, e.clientX - cx) * 180) / Math.PI + 90;
|
||
if (e.shiftKey) ang = Math.round(ang / 15) * 15;
|
||
lastDeg = ((Math.round(ang) % 360) + 360) % 360;
|
||
moved = true;
|
||
this.applyLayout(w, h, lastDeg);
|
||
this.applyWrap();
|
||
};
|
||
const finish = (): void => {
|
||
win.removeEventListener('mousemove', move);
|
||
win.removeEventListener('mouseup', finish);
|
||
if (moved) this.commit({ rotation: lastDeg });
|
||
};
|
||
win.addEventListener('mousemove', move);
|
||
win.addEventListener('mouseup', finish);
|
||
}
|
||
|
||
update(node: PMNode): boolean {
|
||
if (node.type !== this.node.type) return false;
|
||
this.node = node;
|
||
const src = (node.attrs.src as string) ?? '';
|
||
if (this.img.getAttribute('src') !== src) this.img.src = src;
|
||
this.img.alt = (node.attrs.alt as string) ?? '';
|
||
this.applyLayout(this.attrW(), this.attrH(), this.attrRot());
|
||
this.applyWrap();
|
||
return true;
|
||
}
|
||
|
||
selectNode(): void {
|
||
this.dom.classList.add('image-selected');
|
||
}
|
||
|
||
deselectNode(): void {
|
||
this.dom.classList.remove('image-selected');
|
||
}
|
||
|
||
ignoreMutation(): boolean {
|
||
return true;
|
||
}
|
||
|
||
// Keep ProseMirror out of all mouse handling on the image: startReposition owns the
|
||
// drag (live re-anchor) for inline and floating images alike, and the resize/rotate
|
||
// handles own theirs. Non-mouse events (keyboard, etc.) pass through to PM.
|
||
stopEvent(event: Event): boolean {
|
||
return event.type.startsWith('mouse');
|
||
}
|
||
}
|