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https://github.com/xiaoqidun/ofdgo.git
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1371 lines
58 KiB
JavaScript
1371 lines
58 KiB
JavaScript
const PX_PER_MM = 96 / 25.4;
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export function editTextValue(input) {
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let text = "", previous;
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for (const node of input.childNodes) {
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const block = node.nodeName === "DIV" || node.nodeName === "P";
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if (previous && (block || previous.nodeName === "DIV" || previous.nodeName === "P") && previous.nodeName !== "BR") text += "\n";
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text += node.nodeType === 3 ? node.textContent : node.nodeName === "BR" ? (node.nextSibling ? "\n" : "") : editTextValue(node);
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previous = node;
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}
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return text;
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}
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export function pagePoint(x, y, rect, page, rotation) {
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const u = (x - rect.left) / rect.width;
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const v = (y - rect.top) / rect.height;
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const points = [[u, v], [v, 1 - u], [1 - u, 1 - v], [1 - v, u]];
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const point = points[rotation / 90];
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return { x: point[0] * page.width, y: point[1] * page.height };
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}
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export function objectTransform(box, dx, dy, corner = "") {
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if (!corner) {
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return { x: dx, y: dy, scale: 1 };
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}
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const left = corner.includes("w");
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const top = corner.includes("n");
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const x = left ? -dx : dx;
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const y = top ? -dy : dy;
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const minimum = Math.min(1, 1 / Math.min(box.width, box.height));
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const scale = Math.max(minimum, 1 + (x * box.width + y * box.height) / (box.width ** 2 + box.height ** 2));
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return { x: left ? box.width * (1 - scale) : 0, y: top ? box.height * (1 - scale) : 0, scale };
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}
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export function textTransform(box, dx, dy, corner) {
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if (corner !== "n" && corner !== "s") return objectTransform(box, dx, dy, corner);
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const top = corner === "n";
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const scale = Math.max(Math.min(1, 1 / box.height), 1 + (top ? -dy : dy) / box.height);
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return { x: box.width * (1 - scale) / 2,
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y: top ? box.height * (1 - scale) : 0, scale };
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}
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export function lineShape(shape) {
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return shape === "line" || shape === "arrow" || shape === "double-arrow";
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}
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function arrowPath(shape, box) {
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const { x, y, width: w, height: h } = box, length = Math.hypot(w, h);
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let path = `M${x} ${y}L${x + w} ${y + h}`;
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if (!length) return path;
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const head = Math.min(4, length / 3), ux = w / length, uy = h / length;
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for (const reverse of shape === "double-arrow" ? [false, true] : [false]) {
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const px = reverse ? x : x + w, py = reverse ? y : y + h, direction = reverse ? -1 : 1;
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const bx = px - ux * head * direction, by = py - uy * head * direction;
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path += `M${bx - uy * head * .45} ${by + ux * head * .45}L${px} ${py}L${bx + uy * head * .45} ${by - ux * head * .45}`;
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}
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return path;
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}
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export function selectionBounds(items) {
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const x = Math.min(...items.map(item => item.x)), y = Math.min(...items.map(item => item.y));
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return { x, y, width: Math.max(...items.map(item => item.x + item.width)) - x,
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height: Math.max(...items.map(item => item.y + item.height)) - y };
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}
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function resizeCorner(node, event) {
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let corner = event.target.dataset.corner || "", distance = Infinity;
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if (!corner) return corner;
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for (const handle of node.children) {
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if (!handle.dataset.corner) continue;
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const rect = handle.getBoundingClientRect();
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const next = (event.clientX - rect.left - rect.width / 2) ** 2 + (event.clientY - rect.top - rect.height / 2) ** 2;
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if (next < distance || next === distance && handle.dataset.corner === event.target.dataset.corner) {
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corner = handle.dataset.corner;
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distance = next;
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}
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}
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return corner;
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}
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function alignmentSnap(box, targets, tolerance) {
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const lines = [];
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const offset = { x: 0, y: 0 };
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for (const [axis, size, cross, span] of [["x", "width", "y", "height"], ["y", "height", "x", "width"]]) {
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let distance = Infinity, line;
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for (const target of targets) {
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for (const anchor of [0, 0.5, 1]) {
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const position = target[axis] + target[size] * anchor;
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for (const edge of [0, 0.5, 1]) {
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const delta = position - box[axis] - box[size] * edge;
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if (Math.abs(delta) > tolerance[axis] || Math.abs(delta) >= distance) continue;
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distance = Math.abs(delta);
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offset[axis] = delta;
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const from = Math.min(box[cross], target[cross]);
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const to = Math.max(box[cross] + box[span], target[cross] + target[span]);
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line = axis === "x" ? `M${position} ${from}V${to}` : `M${from} ${position}H${to}`;
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}
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}
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}
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if (line) lines.push(line);
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}
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return { ...offset, path: lines.join("") };
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}
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function transformedBox(box, matrix) {
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const [a, b, c, d, e, f] = matrix;
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const points = [[box.x, box.y], [box.x + box.width, box.y], [box.x, box.y + box.height], [box.x + box.width, box.y + box.height]]
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.map(([x, y]) => [a * x + c * y + e, b * x + d * y + f]);
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const x = Math.min(...points.map(p => p[0])), y = Math.min(...points.map(p => p[1]));
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return { x, y, width: Math.max(...points.map(p => p[0])) - x, height: Math.max(...points.map(p => p[1])) - y };
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}
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function cropBox(box, bounds, dx, dy, corner) {
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if (!corner) return { ...box, x: Math.max(bounds.x, Math.min(box.x + dx, bounds.x + bounds.width - box.width)),
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y: Math.max(bounds.y, Math.min(box.y + dy, bounds.y + bounds.height - box.height)) };
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const next = reshapeBox({ geometry: box }, dx, dy, corner, false);
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const x = Math.max(bounds.x, next.x), y = Math.max(bounds.y, next.y);
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return { x, y, width: Math.min(bounds.x + bounds.width, next.x + next.width) - x,
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height: Math.min(bounds.y + bounds.height, next.y + next.height) - y };
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}
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export function constrainedPoint(from, to, shape, shift) {
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let dx = to.x - from.x, dy = to.y - from.y;
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if (shift && lineShape(shape)) {
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const directions = [[1, 0], [1, 1], [0, 1], [-1, 1], [-1, 0], [-1, -1], [0, -1], [1, -1]];
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const [x, y] = directions[(Math.round(Math.atan2(dy, dx) / (Math.PI / 4)) + 8) % 8];
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const length = (dx * x + dy * y) / (x * x + y * y);
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dx = x * length;
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dy = y * length;
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} else if (shift) {
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const size = Math.max(Math.abs(dx), Math.abs(dy));
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dx = (dx < 0 ? -1 : 1) * size;
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dy = (dy < 0 ? -1 : 1) * size;
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}
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return { x: from.x + dx, y: from.y + dy };
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}
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export function reshapeBox(item, dx, dy, handle, shift) {
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const box = item.geometry;
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if (!dx && !dy && !shift) return { ...box };
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if (lineShape(item.shape)) {
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const start = { x: box.x, y: box.y }, end = { x: box.x + box.width, y: box.y + box.height };
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const fixed = handle === "start" ? end : start, moving = handle === "start" ? start : end;
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const point = constrainedPoint(fixed, { x: moving.x + dx, y: moving.y + dy }, "line", shift);
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const from = handle === "start" ? point : fixed, to = handle === "start" ? fixed : point;
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return from.x === to.x && from.y === to.y ? null
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: { x: from.x, y: from.y, width: to.x - from.x, height: to.y - from.y };
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}
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if (shift && handle.length === 2) {
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const change = objectTransform(box, dx, dy, handle);
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return { x: box.x + change.x, y: box.y + change.y, width: box.width * change.scale, height: box.height * change.scale };
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}
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let x = box.x, y = box.y, right = x + box.width, bottom = y + box.height;
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const minWidth = Math.min(1, box.width), minHeight = Math.min(1, box.height);
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if (handle.includes("w")) x = Math.min(x + dx, right - minWidth);
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if (handle.includes("e")) right = Math.max(right + dx, x + minWidth);
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if (handle.includes("n")) y = Math.min(y + dy, bottom - minHeight);
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if (handle.includes("s")) bottom = Math.max(bottom + dy, y + minHeight);
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return { x, y, width: right - x, height: bottom - y };
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}
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export function reshapeFrame(frame, dx, dy, handle, shift) {
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const [a, b, c, d] = frame.matrix, determinant = a * d - b * c;
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return reshapeBox({ geometry: frame.box }, (d * dx - c * dy) / determinant, (a * dy - b * dx) / determinant, handle, shift);
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}
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function paintShape(node, shape, box) {
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const { x, y, width, height } = box;
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const attributes = lineShape(shape) && shape !== "line" ? { d: arrowPath(shape, box) }
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: shape === "line" ? { x1: x, y1: y, x2: x + width, y2: y + height }
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: shape === "ellipse" ? { cx: x + width / 2, cy: y + height / 2, rx: width / 2, ry: height / 2 }
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: { x, y, width, height };
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for (const [key, value] of Object.entries(attributes)) {
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node.setAttribute(key, value);
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}
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}
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export function canEditObject(item, capability) {
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if (!item) return false;
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const objects = item.items || [item];
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return objects.every(object => Boolean(object.capabilities?.[capability] || capability === "move" && object.capabilities?.transform));
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}
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export function missingGlyphMessage(diagnostic, action = "请更换字体") {
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if (!diagnostic) return "";
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const characters = Array.from(diagnostic.characters);
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const sample = characters.slice(0, 8).map(char => /[\p{C}\p{Z}\p{M}]/u.test(char)
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? `U+${char.codePointAt(0).toString(16).toUpperCase().padStart(4, "0")}` : char).join("、");
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return `字体缺字（${sample}${characters.length > 8 ? `等${characters.length}字` : ""}），${action}`;
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}
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export function objectEditReason(item) {
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const labels = { fontUnavailable: "字体不可用", unsupportedColor: "暂不支持此颜色", unsupportedStyle: "暂不支持此样式",
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unsupportedContainer: "暂不支持此对象结构", invalidObject: "对象数据异常" };
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const reasons = (item?.items || (item ? [item] : [])).map(object => {
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const reason = object.capabilities?.reason || "";
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if (!reason) return "";
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const message = labels[object.capabilities.reasonCode] || "暂不支持此对象特性";
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const available = object.capabilities.transform ? object.capabilities.paint ? "仍可移动、改色" : "仍可移动"
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: object.capabilities.replaceImage ? "仍可替换图片" : object.capabilities.copy && object.capabilities.delete ? "仍可复制、删除"
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: object.capabilities.delete ? "仍可删除" : "暂不可编辑";
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return object.capabilities.missingGlyphs ? missingGlyphMessage(object.capabilities.missingGlyphs, available) : `${message}，${available}`;
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});
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return [...new Set(reasons.filter(Boolean))].join("；");
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}
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export function selectedText(item) {
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if (!item?.items) return item?.type === "TextObject" ? item : null;
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if (!item.items.every(member => member.type === "TextObject")) return null;
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const text = { ...item, type: "TextObject" };
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for (const key of ["font", "fontName", "size", "color"]) {
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const value = item.items[0][key];
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text[key] = item.items.every(member => member[key] === value) ? value : undefined;
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}
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return text;
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}
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export class CanvasEditor {
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constructor(viewer, options) {
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this.viewer = viewer;
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this.options = options;
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this.enabled = false;
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this.selected = null;
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this.multiple = false;
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this.nodes = new WeakMap();
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this.pages = new WeakMap();
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this.tool = "";
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viewer.addEventListener("pointerdown", (event) => this.start(event));
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viewer.addEventListener("pointermove", (event) => this.move(event));
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viewer.addEventListener("pointerup", (event) => this.end(event));
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viewer.addEventListener("pointercancel", () => this.cancel());
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viewer.addEventListener("contextmenu", event => {
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if (!this.enabled || this.input || this.options.busy()) return;
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const items = this.itemsAt(event);
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if (items.length > 1) {
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event.preventDefault();
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this.cancel();
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this.options.onPick?.(items);
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}
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});
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viewer.addEventListener("lostpointercapture", () => this.cancel());
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viewer.addEventListener("keydown", (event) => this.keyDown(event));
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viewer.addEventListener("keyup", (event) => this.keyUp(event));
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viewer.addEventListener("blur", () => this.commitNudge());
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viewer.addEventListener("dblclick", (event) => {
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const item = this.selected;
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if (!event.altKey && this.enabled && item && !item.items && !this.input && !this.options.busy()) {
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this.options.onEdit(item);
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}
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});
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viewer.addEventListener("scroll", () => this.scroll());
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window.addEventListener("blur", () => { this.cancel(); this.commitNudge(); });
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window.addEventListener("resize", () => this.cancel());
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}
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focus() {
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this.viewer.classList.remove("keyboard-focus");
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this.viewer.focus({ preventScroll: true });
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}
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setEnabled(enabled) {
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this.enabled = enabled;
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this.viewer.classList.toggle("editing-select", enabled);
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if (!enabled) {
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this.setTool("");
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this.clear();
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}
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}
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setTool(tool) {
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this.cancel();
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this.tool = tool;
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this.viewer.classList.toggle("editing-draw", Boolean(tool));
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if (tool) {
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this.select(null);
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}
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this.options.onTool?.(tool);
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}
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mount(index, page, surface) {
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surface.querySelector(".edit-layer")?.remove();
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const crop = this.crop?.item.index === index ? this.crop : null;
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if (crop) this.closeCrop(true);
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const pending = this.pendingSelection?.index === index;
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const selected = pending ? this.pendingSelection.ids || page.objects.slice(-1).map(item => item.id)
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: this.items().filter(item => item.index === index).map(item => item.id);
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const selection = [];
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this.pages.set(surface, { index, width: page.width, height: page.height });
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const layer = document.createElement("div");
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layer.className = "edit-layer";
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const artwork = new Map([...surface.querySelectorAll("[data-ofd-object], [data-ofd-child]")].map((node, order) => [node.getAttribute("data-ofd-object") || node.getAttribute("data-ofd-child"), { node, order }]));
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const objects = [...page.objects].sort((a, b) => (artwork.get(a.id)?.order ?? 0) - (artwork.get(b.id)?.order ?? 0));
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for (const object of objects) {
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const node = document.createElement("div");
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node.className = "edit-object";
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node.classList.toggle("read-only", !canEditObject(object, "move"));
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node.title = objectEditReason(object);
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if (lineShape(object.shape)) {
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node.classList.add("edit-line");
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}
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node.tabIndex = 0;
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node.setAttribute("role", "button");
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node.setAttribute("aria-label", { ImageObject: "图片对象", TextObject: "文字对象", PathObject: "图形对象", CompositeObject: "复合对象", CompositeGraphicUnit: "复合对象", Annotation: "注解对象" }[object.type]);
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const item = { ...object, index, page: { width: page.width, height: page.height }, node, surface };
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item.artwork = artwork.get(object.id)?.node;
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if (object.note) {
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const icon = document.createElement("span");
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icon.className = "edit-note-icon";
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icon.setAttribute("aria-hidden", "true");
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icon.textContent = "\u24d8";
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node.append(icon);
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}
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if (object.type === "PathObject" && (object.shape || object.outline || object.contours?.length)) {
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node.classList.add("edit-contour");
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const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
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svg.classList.add("edit-outline");
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svg.setAttribute("aria-hidden", "true");
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svg.setAttribute("preserveAspectRatio", "none");
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let contour;
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if (object.shape || object.oriented || !object.contours?.length) {
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const shape = object.shape || object.oriented?.kind;
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contour = document.createElementNS("http://www.w3.org/2000/svg", shape === "line" ? "line" : shape === "ellipse" ? "ellipse" : shape === "rectangle" ? "rect" : "path");
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if (!shape) contour.setAttribute("d", object.outline);
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svg.append(contour);
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} else {
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for (const path of object.contours) {
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const contour = document.createElementNS("http://www.w3.org/2000/svg", "path");
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contour.setAttribute("d", path.path);
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svg.append(contour);
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}
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}
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node.append(svg);
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item.contour = { svg, path: contour };
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}
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this.nodes.set(node, item);
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node.addEventListener("focus", () => this.select(item));
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const handles = !canEditObject(object, "transform") ? [] : lineShape(object.shape) ? ["start", "end"]
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: object.shape || object.oriented || canEditObject(object, "stretch") ? ["nw", "n", "ne", "e", "se", "s", "sw", "w"]
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: object.type === "TextObject" && canEditObject(object, "reflow") && canEditObject(object, "layoutKnown")
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? ["nw", "n", "ne", "e", "se", "s", "sw", "w"] : ["nw", "ne", "sw", "se"];
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for (const corner of handles) {
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const handle = document.createElement("span");
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handle.className = `edit-handle edit-${corner}`;
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handle.dataset.corner = corner;
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node.append(handle);
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}
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this.place(item);
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layer.append(node);
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if (selected.includes(object.id)) {
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selection.push(item);
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}
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}
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surface.append(layer);
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if (selected.length) this.setSelection(selection);
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if (pending) this.pendingSelection = null;
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if (crop && selection.length === 1 && selection[0].id === crop.item.id
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&& ["x", "y", "width", "height"].every(key => selection[0][key] === crop.item[key])) {
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this.startCrop(selection[0], crop.pagePreview);
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this.crop.box = { ...crop.box };
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this.paintCrop();
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} else if (crop) {
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crop.pagePreview.urls.forEach(url => URL.revokeObjectURL(url));
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}
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}
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place(item, change = { x: 0, y: 0, scale: 1 }) {
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if (item.items) {
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for (const member of item.items) this.place(member, {
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x: change.x + (member.x - item.x) * (change.scale - 1),
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y: change.y + (member.y - item.y) * (change.scale - 1), scale: change.scale,
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});
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}
|
||
if (item.artwork) {
|
||
const scale = change.scale, x = item.x * (1 - scale) + change.x, y = item.y * (1 - scale) + change.y;
|
||
if (x || y || scale !== 1) item.artwork.setAttribute("transform", `translate(${x} ${y}) scale(${scale})`);
|
||
else item.artwork.removeAttribute("transform");
|
||
}
|
||
if (item.oriented) {
|
||
this.placeOriented(item, item.oriented.box, change);
|
||
return;
|
||
}
|
||
if (item.shape) {
|
||
this.placeShape(item, { x: item.geometry.x + change.x + (item.geometry.x - item.x) * (change.scale - 1),
|
||
y: item.geometry.y + change.y + (item.geometry.y - item.y) * (change.scale - 1),
|
||
width: item.geometry.width * change.scale, height: item.geometry.height * change.scale });
|
||
return;
|
||
}
|
||
Object.assign(item.node.style, {
|
||
left: `${(item.x + change.x) * PX_PER_MM}px`, top: `${(item.y + change.y) * PX_PER_MM}px`,
|
||
width: `${item.width * change.scale * PX_PER_MM}px`, height: `${item.height * change.scale * PX_PER_MM}px`,
|
||
});
|
||
if (item.contour) item.contour.svg.setAttribute("viewBox", `${item.x} ${item.y} ${item.width} ${item.height}`);
|
||
if (item.textFrame) {
|
||
const { matrix: [a, b, c, d, e, f], width, height } = item.textFrame;
|
||
for (const handle of item.node.children) {
|
||
if (handle.dataset.corner !== "w" && handle.dataset.corner !== "e") continue;
|
||
const x = handle.dataset.corner === "e" ? width : 0;
|
||
handle.style.left = `${(a * x + c * height / 2 + e - item.x) * change.scale * PX_PER_MM}px`;
|
||
handle.style.top = `${(b * x + d * height / 2 + f - item.y) * change.scale * PX_PER_MM}px`;
|
||
handle.style.cursor = a === 0 ? "var(--resize-vertical, ns-resize)" : "var(--resize-horizontal, ew-resize)";
|
||
}
|
||
}
|
||
}
|
||
|
||
placeOriented(item, box, change = { x: 0, y: 0, scale: 1 }) {
|
||
const frame = item.oriented, bounds = transformedBox(box, frame.matrix), scale = change.scale;
|
||
const [a, b, c, d, e, f] = frame.matrix;
|
||
Object.assign(item.node.style, {
|
||
left: `${(item.x + change.x + (bounds.x - item.x) * scale) * PX_PER_MM}px`,
|
||
top: `${(item.y + change.y + (bounds.y - item.y) * scale) * PX_PER_MM}px`,
|
||
width: `${bounds.width * scale * PX_PER_MM}px`, height: `${bounds.height * scale * PX_PER_MM}px`,
|
||
});
|
||
for (const handle of item.node.children) {
|
||
const corner = handle.dataset.corner;
|
||
if (!corner) continue;
|
||
const x = box.x + box.width * (corner.includes("w") ? 0 : corner.includes("e") ? 1 : .5);
|
||
const y = box.y + box.height * (corner.includes("n") ? 0 : corner.includes("s") ? 1 : .5);
|
||
handle.style.left = `${(a * x + c * y + e - bounds.x) * scale * PX_PER_MM}px`;
|
||
handle.style.top = `${(b * x + d * y + f - bounds.y) * scale * PX_PER_MM}px`;
|
||
}
|
||
const { svg, path } = item.contour;
|
||
svg.setAttribute("viewBox", `${bounds.x} ${bounds.y} ${bounds.width} ${bounds.height}`);
|
||
path.setAttribute("transform", `matrix(${frame.matrix.join(" ")})`);
|
||
paintShape(path, frame.kind, box);
|
||
}
|
||
|
||
placeShape(item, box) {
|
||
const x = Math.min(box.x, box.x + box.width), y = Math.min(box.y, box.y + box.height);
|
||
Object.assign(item.node.style, {
|
||
left: `${x * PX_PER_MM}px`, top: `${y * PX_PER_MM}px`,
|
||
width: `${Math.abs(box.width) * PX_PER_MM}px`, height: `${Math.abs(box.height) * PX_PER_MM}px`,
|
||
});
|
||
if (lineShape(item.shape)) {
|
||
for (const handle of item.node.children) {
|
||
if (!handle.dataset.corner) continue;
|
||
const end = handle.dataset.corner === "end";
|
||
handle.style.left = `${(box.x + (end ? box.width : 0) - x) * PX_PER_MM}px`;
|
||
handle.style.top = `${(box.y + (end ? box.height : 0) - y) * PX_PER_MM}px`;
|
||
}
|
||
}
|
||
if (item.contour) {
|
||
const { svg, path } = item.contour;
|
||
const width = Math.abs(box.width), height = Math.abs(box.height);
|
||
svg.setAttribute("viewBox", `0 0 ${width || 1} ${height || 1}`);
|
||
const values = lineShape(item.shape) && item.shape !== "line" ? { d: arrowPath(item.shape, { x: box.x - x, y: box.y - y, width: box.width, height: box.height }) }
|
||
: item.shape === "line" ? { x1: box.x - x, y1: box.y - y, x2: box.x + box.width - x, y2: box.y + box.height - y }
|
||
: item.shape === "ellipse" ? { cx: width / 2, cy: height / 2, rx: width / 2, ry: height / 2 }
|
||
: { x: 0, y: 0, width, height };
|
||
for (const [key, value] of Object.entries(values)) path.setAttribute(key, String(value));
|
||
}
|
||
}
|
||
|
||
items() {
|
||
return this.selected?.items || (this.selected ? [this.selected] : []);
|
||
}
|
||
|
||
setSelection(items) {
|
||
this.cancelNudge();
|
||
const previous = this.selected;
|
||
if (this.crop && (items.length !== 1 || items[0] !== this.crop.item)) this.closeCrop();
|
||
if (this.selected?.items) this.selected.node.remove();
|
||
for (const item of this.items()) {
|
||
item.node.classList.remove("selected", "multi-selected");
|
||
item.node.setAttribute("aria-pressed", "false");
|
||
}
|
||
this.selected = items.length < 2 ? items[0] || null : { ...selectionBounds(items), items,
|
||
id: items.map(item => item.id), index: items[0].index, page: items[0].page, surface: items[0].surface };
|
||
if (items.length > 1) {
|
||
const node = document.createElement("div");
|
||
node.className = "edit-layer edit-selection";
|
||
for (const corner of canEditObject(this.selected, "transform") ? ["nw", "ne", "sw", "se"] : []) {
|
||
const handle = document.createElement("span");
|
||
handle.className = `edit-handle edit-${corner}`;
|
||
handle.dataset.corner = corner;
|
||
node.append(handle);
|
||
}
|
||
this.selected.node = node;
|
||
this.nodes.set(node, this.selected);
|
||
this.place(this.selected);
|
||
this.selected.surface.append(node);
|
||
}
|
||
for (const item of items) {
|
||
item.node.classList.add("selected");
|
||
item.node.classList.toggle("multi-selected", items.length > 1);
|
||
item.node.setAttribute("aria-pressed", "true");
|
||
}
|
||
this.options.onSelect(this.selected, previous);
|
||
}
|
||
|
||
select(item, add = false) {
|
||
if (!add || !item || this.selected && item.index !== this.selected.index) {
|
||
this.setSelection(item ? [item] : []);
|
||
return;
|
||
}
|
||
const items = this.items();
|
||
this.setSelection(items.includes(item) ? items.filter(member => member !== item) : [...items, item]);
|
||
}
|
||
|
||
clear() {
|
||
this.closeText();
|
||
this.closeCrop();
|
||
this.cancel();
|
||
this.pendingSelection = null;
|
||
this.select(null);
|
||
}
|
||
|
||
start(event) {
|
||
if (this.nudge) {
|
||
this.commitNudge();
|
||
return;
|
||
}
|
||
if (this.input) {
|
||
if (!this.input.input.contains(event.target)) this.commitText();
|
||
return;
|
||
}
|
||
if (!this.enabled || this.options.busy() || this.nudgeCommit || event.button !== 0 || this.drag) {
|
||
return;
|
||
}
|
||
if (this.crop) {
|
||
if (!event.target.closest(".edit-crop")) {
|
||
this.commitCrop();
|
||
return;
|
||
}
|
||
event.preventDefault();
|
||
this.focus();
|
||
const { item, box } = this.crop;
|
||
this.drag = { crop: true, box: { ...box }, pointerID: event.pointerId, corner: resizeCorner(this.crop.node, event),
|
||
page: item.page, rect: item.surface.getBoundingClientRect(), rotation: this.options.rotation(), clientX: event.clientX, clientY: event.clientY };
|
||
this.viewer.setPointerCapture(event.pointerId);
|
||
return;
|
||
}
|
||
if (this.tool) {
|
||
if (this.tool.startsWith("erase-")) this.startErase(event);
|
||
else if (this.tool.startsWith("pen-")) this.startInk(event);
|
||
else this.startShape(event);
|
||
return;
|
||
}
|
||
if (event.altKey && !event.shiftKey && !event.ctrlKey && !event.metaKey && !event.target.dataset.corner) {
|
||
this.cycleSelection(event);
|
||
return;
|
||
}
|
||
let node = event.target.closest(".edit-object, .edit-selection");
|
||
const direct = this.nodes.get(node);
|
||
const target = event.target.dataset.corner || direct && !direct.contours ? direct : this.itemsAt(event)[0];
|
||
if (node || target) event.preventDefault();
|
||
node = target?.node;
|
||
this.focus();
|
||
const additive = event.shiftKey || event.ctrlKey || event.metaKey || this.multiple;
|
||
if (!target) {
|
||
this.startMarquee(event, additive);
|
||
return;
|
||
}
|
||
if (additive && !event.target.dataset.corner) {
|
||
this.select(target, true);
|
||
return;
|
||
}
|
||
if (target !== this.selected && !this.items().includes(target)) this.select(target);
|
||
if (!node || this.options.busy()) {
|
||
return;
|
||
}
|
||
const item = this.selected;
|
||
if (!canEditObject(item, "move")) return;
|
||
this.drag = {
|
||
item, pointerID: event.pointerId, corner: !item.items || target === item ? resizeCorner(node, event) : "",
|
||
rect: item.surface.getBoundingClientRect(), rotation: this.options.rotation(),
|
||
clientX: event.clientX, clientY: event.clientY,
|
||
};
|
||
if (!this.drag.corner) {
|
||
const selected = this.items();
|
||
this.drag.targets = [...item.surface.querySelectorAll(".edit-object")]
|
||
.map(node => this.nodes.get(node)).filter(member => !selected.includes(member));
|
||
this.drag.targets.push({ x: 0, y: 0, ...item.page });
|
||
}
|
||
if (lineShape(item.shape) && this.drag.corner) {
|
||
Object.assign(this.drag, this.createPreview(item.surface, item.page, item.shape, {
|
||
fill: false, stroke: true, strokeColor: "var(--accent)", lineWidth: item.lineWidth,
|
||
}));
|
||
}
|
||
this.viewer.setPointerCapture(event.pointerId);
|
||
}
|
||
|
||
contains(item, point, tolerance = 0) {
|
||
if (point.x < item.x - tolerance || point.x > item.x + item.width + tolerance || point.y < item.y - tolerance || point.y > item.y + item.height + tolerance) return false;
|
||
if (!item.contours) return point.x >= item.x && point.x <= item.x + item.width && point.y >= item.y && point.y <= item.y + item.height;
|
||
this.hitContext ||= document.createElement("canvas").getContext("2d");
|
||
item.hitPaths ||= item.contours.map(contour => ({ path: new Path2D(contour.path), rule: contour.evenOdd ? "evenodd" : "nonzero" }));
|
||
this.hitContext.lineWidth = tolerance * 2;
|
||
return item.hitPaths.some(({ path, rule }) => this.hitContext.isPointInPath(path, point.x, point.y, rule)
|
||
|| tolerance > 0 && this.hitContext.isPointInStroke(path, point.x, point.y));
|
||
}
|
||
|
||
itemsAt(event) {
|
||
const surface = event.target.closest(".page-surface");
|
||
const page = this.pages.get(surface);
|
||
if (!page) return [];
|
||
const rect = surface.getBoundingClientRect(), rotation = this.options.rotation();
|
||
const point = pagePoint(event.clientX, event.clientY, rect, page, rotation);
|
||
const tolerance = 3 * page.width / (rotation % 180 ? rect.height : rect.width);
|
||
return [...surface.querySelectorAll(".edit-object")].map(node => this.nodes.get(node)).reverse().filter(item => this.contains(item, point, tolerance));
|
||
}
|
||
|
||
pageItems(index) {
|
||
return [...this.viewer.querySelectorAll(".edit-object")].map(node => this.nodes.get(node)).filter(item => item?.index === index);
|
||
}
|
||
|
||
cycleSelection(event) {
|
||
const items = this.itemsAt(event);
|
||
if (!items.length) return;
|
||
event.preventDefault();
|
||
this.focus();
|
||
this.select(items[(items.indexOf(this.selected) + 1) % items.length]);
|
||
}
|
||
|
||
move(event) {
|
||
const drag = this.drag;
|
||
if (!drag || drag.pointerID !== event.pointerId) {
|
||
return;
|
||
}
|
||
event.preventDefault();
|
||
drag.pointer = event;
|
||
if (drag.ink) {
|
||
this.moveInk(event, drag);
|
||
return;
|
||
}
|
||
if (drag.erase) {
|
||
this.moveErase(event, drag);
|
||
return;
|
||
}
|
||
if (drag.crop) {
|
||
const from = pagePoint(drag.clientX, drag.clientY, drag.rect, drag.page, drag.rotation);
|
||
const to = pagePoint(event.clientX, event.clientY, drag.rect, drag.page, drag.rotation);
|
||
this.crop.box = cropBox(drag.box, this.crop.item.imageBounds, to.x - from.x, to.y - from.y, drag.corner);
|
||
this.paintCrop();
|
||
return;
|
||
}
|
||
if (drag.shape) {
|
||
this.moveShape(event, drag);
|
||
return;
|
||
}
|
||
if (drag.marquee) {
|
||
this.moveMarquee(event, drag);
|
||
return;
|
||
}
|
||
if (!drag.change && !drag.box && Math.hypot(event.clientX - drag.clientX, event.clientY - drag.clientY) < 3) {
|
||
return;
|
||
}
|
||
const from = drag.origin ||= pagePoint(drag.clientX, drag.clientY, drag.rect, drag.item.page, drag.rotation);
|
||
const to = pagePoint(event.clientX, event.clientY, drag.rect, drag.item.page, drag.rotation);
|
||
if (drag.item.type === "TextObject" && (drag.corner === "w" || drag.corner === "e")) {
|
||
if (drag.item.textFrame) {
|
||
const frame = drag.item.textFrame, [a, b, c, d] = frame.matrix;
|
||
const dx = (d * (to.x - from.x) - c * (to.y - from.y)) / (a * d - b * c);
|
||
const box = reshapeBox({ geometry: { x: 0, y: 0, width: frame.width, height: frame.height } }, dx, 0, drag.corner, false);
|
||
drag.box = { x: drag.item.x + box.x, width: box.width };
|
||
const bounds = transformedBox(box, frame.matrix);
|
||
Object.assign(drag.item.node.style, { left: `${bounds.x * PX_PER_MM}px`, top: `${bounds.y * PX_PER_MM}px`,
|
||
width: `${bounds.width * PX_PER_MM}px`, height: `${bounds.height * PX_PER_MM}px` });
|
||
return;
|
||
}
|
||
drag.box = reshapeBox({ geometry: drag.item }, to.x - from.x, 0, drag.corner, false);
|
||
Object.assign(drag.item.node.style, { left: `${drag.box.x * PX_PER_MM}px`, width: `${drag.box.width * PX_PER_MM}px` });
|
||
return;
|
||
}
|
||
if (canEditObject(drag.item, "stretch") && drag.corner.length === 1) {
|
||
drag.box = reshapeBox({ geometry: drag.item }, to.x - from.x, to.y - from.y, drag.corner, false);
|
||
const sx = drag.box.width / drag.item.width, sy = drag.box.height / drag.item.height;
|
||
Object.assign(drag.item.node.style, { left: `${drag.box.x * PX_PER_MM}px`, top: `${drag.box.y * PX_PER_MM}px`,
|
||
width: `${drag.box.width * PX_PER_MM}px`, height: `${drag.box.height * PX_PER_MM}px` });
|
||
drag.item.artwork?.setAttribute("transform", `translate(${drag.box.x - drag.item.x * sx} ${drag.box.y - drag.item.y * sy}) scale(${sx} ${sy})`);
|
||
return;
|
||
}
|
||
if (drag.item.oriented && drag.corner) {
|
||
const frame = drag.item.oriented;
|
||
drag.box = reshapeFrame(frame, to.x - from.x, to.y - from.y, drag.corner, event.shiftKey);
|
||
this.placeOriented(drag.item, drag.box);
|
||
const matrix = new DOMMatrix(frame.matrix), sx = drag.box.width / frame.box.width, sy = drag.box.height / frame.box.height;
|
||
const transform = matrix.translate(drag.box.x - frame.box.x * sx, drag.box.y - frame.box.y * sy).scale(sx, sy).multiply(matrix.inverse());
|
||
drag.item.artwork?.setAttribute("transform", `matrix(${[transform.a, transform.b, transform.c, transform.d, transform.e, transform.f].join(" ")})`);
|
||
return;
|
||
}
|
||
if (drag.item.shape && drag.corner) {
|
||
drag.box = reshapeBox(drag.item, to.x - from.x, to.y - from.y, drag.corner, event.shiftKey);
|
||
this.placeShape(drag.item, drag.box || drag.item.geometry);
|
||
if (drag.node) paintShape(drag.node, drag.item.shape, drag.box || drag.item.geometry);
|
||
return;
|
||
}
|
||
const transform = drag.item.type === "TextObject" ? textTransform : objectTransform;
|
||
drag.change = transform(drag.item, to.x - from.x, to.y - from.y, drag.corner);
|
||
if (!drag.corner) {
|
||
drag.axis = event.shiftKey ? Math.abs(drag.change.x) >= Math.abs(drag.change.y) ? "x" : "y" : "";
|
||
if (drag.axis) drag.change[drag.axis === "x" ? "y" : "x"] = 0;
|
||
this.snap(drag, event.altKey);
|
||
this.autoScroll(drag);
|
||
}
|
||
this.place(drag.item, drag.change);
|
||
}
|
||
|
||
scroll() {
|
||
const drag = this.drag;
|
||
if (!drag?.item || drag.corner || !drag.pointer) {
|
||
this.cancel();
|
||
return;
|
||
}
|
||
drag.origin ||= pagePoint(drag.clientX, drag.clientY, drag.rect, drag.item.page, drag.rotation);
|
||
drag.rect = drag.item.surface.getBoundingClientRect();
|
||
this.move(drag.pointer);
|
||
}
|
||
|
||
autoScroll(drag) {
|
||
if (drag.scrolling) return;
|
||
drag.scrolling = true;
|
||
requestAnimationFrame(time => {
|
||
drag.scrolling = false;
|
||
if (this.drag !== drag) return;
|
||
const viewer = this.viewer, rect = viewer.getBoundingClientRect(), pointer = drag.pointer;
|
||
const speed = (value, start, size) => value < start + 32 ? Math.max(-1, (value - start - 32) / 32)
|
||
: value > start + size - 32 ? Math.min(1, (value - start - size + 32) / 32) : 0;
|
||
const elapsed = Math.min(32, time - (drag.scrollTime ?? time - 16));
|
||
drag.scrollTime = time;
|
||
const left = viewer.scrollLeft, top = viewer.scrollTop;
|
||
viewer.scrollLeft += speed(pointer.clientX, rect.left, viewer.clientWidth) * elapsed;
|
||
viewer.scrollTop += speed(pointer.clientY, rect.top, viewer.clientHeight) * elapsed;
|
||
if (viewer.scrollLeft !== left || viewer.scrollTop !== top) this.scroll();
|
||
else drag.scrollTime = null;
|
||
});
|
||
}
|
||
|
||
snap(drag, bypass = false) {
|
||
const { item, rect, rotation, change } = drag;
|
||
const { x, y, path } = bypass ? { x: 0, y: 0, path: "" } : alignmentSnap({ ...item, x: item.x + change.x, y: item.y + change.y }, drag.targets, {
|
||
x: drag.axis === "y" ? 0 : 4 * item.page.width / (rotation % 180 ? rect.height : rect.width),
|
||
y: drag.axis === "x" ? 0 : 4 * item.page.height / (rotation % 180 ? rect.width : rect.height),
|
||
});
|
||
change.x += x;
|
||
change.y += y;
|
||
if (!drag.guides && path) {
|
||
drag.guides = this.createPreview(item.surface, item.page, "path", {
|
||
fill: false, stroke: true, strokeColor: "var(--accent)", lineWidth: 1,
|
||
});
|
||
drag.guides.node.setAttribute("vector-effect", "non-scaling-stroke");
|
||
drag.guides.node.setAttribute("stroke-dasharray", "4 3");
|
||
}
|
||
drag.guides?.node.setAttribute("d", path);
|
||
}
|
||
|
||
end(event) {
|
||
const drag = this.drag;
|
||
if (!drag || drag.pointerID !== event.pointerId) {
|
||
return;
|
||
}
|
||
this.move(event);
|
||
if (drag.ink) {
|
||
this.drag = null;
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
if (drag.pressure && drag.points.every(point => point.pressure === 0)) {
|
||
drag.preview.remove();
|
||
return;
|
||
}
|
||
Promise.resolve(this.options.onDrawInk(drag.page.index, drag.points, drag.style, drag.pressure)).finally(() => drag.preview.remove());
|
||
return;
|
||
}
|
||
if (drag.erase) {
|
||
const items = drag.erase === "erase-object" ? [...drag.erased] : drag.box
|
||
? drag.items.filter(item => item.x < drag.box.x + drag.box.width && item.x + item.width > drag.box.x
|
||
&& item.y < drag.box.y + drag.box.height && item.y + item.height > drag.box.y) : [];
|
||
this.cancel();
|
||
if (items.length && (!drag.points || drag.points.length >= 3)) this.options.onErase(items, drag.box, drag.points);
|
||
return;
|
||
}
|
||
if (drag.crop) {
|
||
this.drag = null;
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
return;
|
||
}
|
||
if (drag.marquee) {
|
||
this.drag = null;
|
||
drag.preview.remove();
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
return;
|
||
}
|
||
if (drag.shape) {
|
||
this.drag = null;
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
if (drag.annotation) {
|
||
const point = pagePoint(drag.clientX, drag.clientY, drag.rect, drag.page, drag.rotation);
|
||
const box = drag.box || { ...point, width: drag.annotation === "note" ? 5 : 40, height: drag.annotation === "note" ? 5 : 12 };
|
||
drag.preview.remove();
|
||
this.setTool("");
|
||
this.options.onDrawAnnotation(drag.page.index, drag.annotation, box);
|
||
return;
|
||
}
|
||
if (drag.shape === "text") {
|
||
const from = pagePoint(drag.clientX, drag.clientY, drag.rect, drag.page, drag.rotation);
|
||
const x = Math.max(0, Math.min(from.x, drag.page.width - 1));
|
||
const y = Math.max(0, Math.min(from.y, drag.page.height - 1));
|
||
const box = drag.box ? { ...drag.box, wrap: true } : { x, y, width: Math.min(80, drag.page.width - x), height: 5, wrap: false };
|
||
drag.preview.remove();
|
||
this.setTool("");
|
||
this.options.onDrawText(drag.page.index, box, drag.surface, drag.page);
|
||
return;
|
||
}
|
||
if (!drag.box) {
|
||
drag.preview.remove();
|
||
return;
|
||
}
|
||
this.setTool("");
|
||
Promise.resolve(this.options.onDraw(drag.page.index, drag.shape, drag.box, drag.style))
|
||
.finally(() => drag.preview.remove());
|
||
return;
|
||
}
|
||
if (drag.corner && drag.box) {
|
||
this.drag = null;
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
const geometry = drag.item.oriented?.box || drag.item.geometry || (drag.item.textFrame ? { x: drag.item.x, width: drag.item.textFrame.width } : drag.item);
|
||
const changed = Object.keys(drag.box).some((key) => drag.box[key] !== geometry[key]);
|
||
const apply = drag.item.shape || drag.item.oriented ? this.options.onReshape : canEditObject(drag.item, "stretch") ? this.options.onResize : this.options.onTextWidth;
|
||
Promise.resolve(changed && apply(drag.item, drag.box)).finally(() => {
|
||
drag.preview?.remove();
|
||
this.place(drag.item);
|
||
});
|
||
return;
|
||
}
|
||
if (drag.change && (drag.change.x || drag.change.y || drag.change.scale !== 1)) {
|
||
this.drag = null;
|
||
drag.guides?.preview.remove();
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
Promise.resolve(this.options.onTransform(drag.item, drag.change)).finally(() => this.place(drag.item));
|
||
} else this.cancel();
|
||
}
|
||
|
||
cancel() {
|
||
const drag = this.drag;
|
||
this.drag = null;
|
||
if (drag) {
|
||
for (const item of drag.erased || []) item.node.classList.remove("erasing");
|
||
if (drag.crop) {
|
||
this.crop.box = drag.box;
|
||
this.paintCrop();
|
||
}
|
||
drag.preview?.remove();
|
||
drag.guides?.preview.remove();
|
||
if (drag.marquee) this.setSelection(drag.before);
|
||
if (drag.item) {
|
||
this.place(drag.item);
|
||
}
|
||
if (this.viewer.hasPointerCapture(drag.pointerID)) {
|
||
this.viewer.releasePointerCapture(drag.pointerID);
|
||
}
|
||
}
|
||
}
|
||
|
||
startInk(event) {
|
||
const surface = event.target.closest(".page-surface") || this.nearestSurface(event), page = this.pages.get(surface);
|
||
if (!page || !this.options.canInsert(page.index)) return;
|
||
event.preventDefault();
|
||
this.focus();
|
||
const style = { ...this.options.drawStyle(), fill: false, stroke: true };
|
||
const pressure = this.tool === "pen-pressure";
|
||
const preview = this.createPreview(surface, page, "path", pressure ? { ...style, fill: true, fillColor: style.strokeColor, stroke: false } : style);
|
||
preview.node.setAttribute("stroke-linecap", "round");
|
||
preview.node.setAttribute("stroke-linejoin", "round");
|
||
this.drag = { ink: true, pressure, points: [], parts: [], page, surface, style, ...preview, pointerID: event.pointerId,
|
||
rect: surface.getBoundingClientRect(), rotation: this.options.rotation() };
|
||
this.viewer.setPointerCapture(event.pointerId);
|
||
this.moveInk(event, this.drag);
|
||
}
|
||
|
||
moveInk(event, drag) {
|
||
const coalesced = event.getCoalescedEvents?.() || [];
|
||
for (const sample of coalesced.length ? coalesced : [event]) {
|
||
const point = pagePoint(sample.clientX, sample.clientY, drag.rect, drag.page, drag.rotation);
|
||
const last = drag.points.at(-1);
|
||
point.pressure = sample.pointerType === "pen" ? event.type === "pointerup" ? last?.pressure ?? sample.pressure : sample.pressure : 0.5;
|
||
if (last && Math.hypot(point.x-last.x, point.y-last.y) < 0.05 && Math.abs(point.pressure-last.pressure) < 0.01) continue;
|
||
drag.points.push(point);
|
||
if (!drag.pressure) {
|
||
drag.parts.push(`${last ? "L" : "M"}${point.x} ${point.y}`);
|
||
} else {
|
||
const radius = drag.style.lineWidth * point.pressure / 2;
|
||
if (radius > 0) drag.parts.push(`M${point.x+radius} ${point.y}a${radius} ${radius} 0 1 1 ${-2*radius} 0a${radius} ${radius} 0 1 1 ${2*radius} 0Z`);
|
||
if (last) {
|
||
const r = drag.style.lineWidth * last.pressure / 2, dx = point.x-last.x, dy = point.y-last.y, length = Math.hypot(dx,dy);
|
||
if ((radius > 0 || r > 0) && length > Math.abs(radius-r)) {
|
||
const x = dx/length, y = dy/length, a = (r-radius)/length, b = Math.sqrt(1-a*a);
|
||
const nx = a*x-b*y, ny = a*y+b*x, mx = a*x+b*y, my = a*y-b*x;
|
||
drag.parts.push(`M${last.x+r*mx} ${last.y+r*my}L${point.x+radius*mx} ${point.y+radius*my}L${point.x+radius*nx} ${point.y+radius*ny}L${last.x+r*nx} ${last.y+r*ny}Z`);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
const dot = drag.points.length === 1 && !drag.pressure ? `l0.001 0` : "";
|
||
drag.node.setAttribute("d", drag.parts.join(" ") + dot);
|
||
}
|
||
|
||
startErase(event) {
|
||
const surface = event.target.closest(".page-surface") || this.nearestSurface(event);
|
||
const page = this.pages.get(surface);
|
||
if (!page) return;
|
||
event.preventDefault();
|
||
this.focus();
|
||
this.drag = { erase: this.tool, page, surface, items: [...surface.querySelectorAll(".edit-object")].map(node => this.nodes.get(node)),
|
||
erased: new Set(), shape: "rectangle", pointerID: event.pointerId, clientX: event.clientX, clientY: event.clientY,
|
||
rect: surface.getBoundingClientRect(), rotation: this.options.rotation() };
|
||
if (this.tool === "erase-region") Object.assign(this.drag, this.createPreview(surface, page, "rectangle",
|
||
{ fill: true, fillColor: "var(--accent-soft)", stroke: true, strokeColor: "var(--accent)", lineWidth: 0.2 }));
|
||
if (this.tool === "erase-path") {
|
||
Object.assign(this.drag, this.createPreview(surface, page, "path",
|
||
{ fill: true, fillColor: "var(--accent-soft)", stroke: true, strokeColor: "var(--accent)", lineWidth: 0.2 }), { points: [] });
|
||
this.drag.node.setAttribute("fill-rule", "evenodd");
|
||
}
|
||
this.viewer.setPointerCapture(event.pointerId);
|
||
this.moveErase(event, this.drag);
|
||
}
|
||
|
||
moveErase(event, drag) {
|
||
if (drag.erase === "erase-region") { this.moveShape(event, drag); return; }
|
||
const point = pagePoint(event.clientX, event.clientY, drag.rect, drag.page, drag.rotation);
|
||
if (drag.points) {
|
||
const last = drag.lastPointer;
|
||
if (last && Math.hypot(event.clientX - last.x, event.clientY - last.y) < 2) return;
|
||
drag.lastPointer = { x: event.clientX, y: event.clientY };
|
||
drag.points.push(point);
|
||
const box = drag.box || { x: point.x, y: point.y, width: 0, height: 0 };
|
||
const right = Math.max(box.x + box.width, point.x), bottom = Math.max(box.y + box.height, point.y);
|
||
drag.box = { x: Math.min(box.x, point.x), y: Math.min(box.y, point.y) };
|
||
Object.assign(drag.box, { width: right - drag.box.x, height: bottom - drag.box.y });
|
||
drag.node.setAttribute("d", drag.points.map((point, index) => `${index ? "L" : "M"}${point.x} ${point.y}`).join(" ") + " Z");
|
||
return;
|
||
}
|
||
const item = [...drag.items].reverse().find(item => this.contains(item, point, 3 * drag.page.width / (drag.rotation % 180 ? drag.rect.height : drag.rect.width)));
|
||
if (item) { drag.erased.add(item); item.node.classList.add("erasing"); }
|
||
}
|
||
|
||
startMarquee(event, additive) {
|
||
const surface = event.target.closest(".page-surface"), page = this.pages.get(surface);
|
||
if (!page) {
|
||
this.select(null);
|
||
return;
|
||
}
|
||
event.preventDefault();
|
||
const before = this.items();
|
||
const base = additive ? before.filter(item => item.index === page.index) : [];
|
||
this.setSelection(base);
|
||
this.drag = { marquee: true, page, surface, before, base,
|
||
...this.createPreview(surface, page, "rectangle", { fill: true, fillColor: "var(--accent-soft)", stroke: true, strokeColor: "var(--accent)", lineWidth: 0.2 }),
|
||
pointerID: event.pointerId, clientX: event.clientX, clientY: event.clientY,
|
||
rect: surface.getBoundingClientRect(), rotation: this.options.rotation() };
|
||
this.viewer.setPointerCapture(event.pointerId);
|
||
}
|
||
|
||
moveMarquee(event, drag) {
|
||
const from = pagePoint(drag.clientX, drag.clientY, drag.rect, drag.page, drag.rotation);
|
||
const to = pagePoint(event.clientX, event.clientY, drag.rect, drag.page, drag.rotation);
|
||
const box = { x: Math.min(from.x, to.x), y: Math.min(from.y, to.y), width: Math.abs(to.x-from.x), height: Math.abs(to.y-from.y) };
|
||
paintShape(drag.node, "rectangle", box);
|
||
if (Math.hypot(event.clientX-drag.clientX, event.clientY-drag.clientY) < 3) return;
|
||
const items = [...drag.base];
|
||
for (const node of drag.surface.querySelectorAll(".edit-object")) {
|
||
const item = this.nodes.get(node);
|
||
if (!items.includes(item) && item.x >= box.x && item.x+item.width <= box.x+box.width && item.y >= box.y && item.y+item.height <= box.y+box.height) {
|
||
items.push(item);
|
||
}
|
||
}
|
||
this.setSelection(items);
|
||
}
|
||
|
||
startShape(event) {
|
||
const surface = event.target.closest(".page-surface") || (this.tool !== "text" && this.nearestSurface(event));
|
||
const page = this.pages.get(surface);
|
||
if (!page || !this.options.canInsert(page.index)) {
|
||
return;
|
||
}
|
||
event.preventDefault();
|
||
this.focus();
|
||
const annotation = this.tool.startsWith("annotation:") ? this.tool.slice(11) : "";
|
||
const shape = annotation ? "rectangle" : this.tool;
|
||
const style = this.options.drawStyle();
|
||
if (lineShape(shape)) {
|
||
style.fill = false;
|
||
style.stroke = true;
|
||
}
|
||
this.drag = { shape, annotation, page, surface, ...this.createPreview(surface, page, shape === "text" ? "rectangle" : shape, style), style, pointerID: event.pointerId,
|
||
rect: surface.getBoundingClientRect(), rotation: this.options.rotation(),
|
||
clientX: event.clientX, clientY: event.clientY };
|
||
this.viewer.setPointerCapture(event.pointerId);
|
||
}
|
||
|
||
nearestSurface(event) {
|
||
let nearest = null, distance = Infinity;
|
||
for (const surface of this.viewer.querySelectorAll(".page-surface")) {
|
||
if (!this.pages.has(surface)) continue;
|
||
const rect = surface.getBoundingClientRect();
|
||
const next = Math.hypot(Math.max(rect.left - event.clientX, 0, event.clientX - rect.right),
|
||
Math.max(rect.top - event.clientY, 0, event.clientY - rect.bottom));
|
||
if (next < distance) {
|
||
nearest = surface;
|
||
distance = next;
|
||
}
|
||
}
|
||
return nearest;
|
||
}
|
||
|
||
createPreview(surface, page, shape, style) {
|
||
const preview = document.createElementNS("http://www.w3.org/2000/svg", "svg");
|
||
preview.classList.add("edit-preview");
|
||
preview.setAttribute("viewBox", `0 0 ${page.width} ${page.height}`);
|
||
const node = document.createElementNS("http://www.w3.org/2000/svg", lineShape(shape) && shape !== "line" ? "path" : shape === "rectangle" ? "rect" : shape);
|
||
node.setAttribute("fill", style.fill ? style.fillColor : "none");
|
||
node.setAttribute("stroke", style.stroke ? style.strokeColor : "none");
|
||
node.setAttribute("stroke-width", style.lineWidth);
|
||
preview.append(node);
|
||
surface.append(preview);
|
||
return { preview, node };
|
||
}
|
||
|
||
moveShape(event, drag) {
|
||
const point = (x, y) => {
|
||
const p = pagePoint(x, y, drag.rect, drag.page, drag.rotation);
|
||
return drag.shape === "text" ? { x: Math.max(0, Math.min(p.x, drag.page.width)), y: Math.max(0, Math.min(p.y, drag.page.height)) } : p;
|
||
};
|
||
const from = point(drag.clientX, drag.clientY);
|
||
const to = constrainedPoint(from, point(event.clientX, event.clientY), drag.shape, event.shiftKey && drag.shape !== "text");
|
||
const x = Math.min(from.x, to.x), y = Math.min(from.y, to.y);
|
||
const width = Math.abs(to.x - from.x), height = drag.shape === "text" ? Math.max(5, Math.abs(to.y - from.y)) : Math.abs(to.y - from.y);
|
||
const valid = Math.hypot(event.clientX - drag.clientX, event.clientY - drag.clientY) >= 3
|
||
&& (lineShape(drag.shape) ? width > 0 || height > 0 : width > 0 && height > 0);
|
||
drag.box = valid ? lineShape(drag.shape)
|
||
? { x: from.x, y: from.y, width: to.x - from.x, height: to.y - from.y }
|
||
: { x, y, width, height } : null;
|
||
paintShape(drag.node, drag.shape === "text" ? "rectangle" : drag.shape, lineShape(drag.shape)
|
||
? { x: from.x, y: from.y, width: to.x - from.x, height: to.y - from.y } : { x, y, width, height });
|
||
}
|
||
|
||
modifierChange(event) {
|
||
const pointer = this.drag?.pointer;
|
||
if ((event.key === "Shift" || event.key === "Alt") && pointer) {
|
||
this.move({ pointerId: pointer.pointerId, clientX: pointer.clientX, clientY: pointer.clientY,
|
||
shiftKey: event.shiftKey, altKey: event.altKey, preventDefault() {} });
|
||
}
|
||
}
|
||
|
||
keyUp(event) {
|
||
this.modifierChange(event);
|
||
if (this.nudge?.keys.delete(event.key) && !this.nudge.keys.size) return this.commitNudge();
|
||
}
|
||
|
||
nudgeChanged() {
|
||
return Boolean(this.nudge && (this.nudge.x || this.nudge.y));
|
||
}
|
||
|
||
cancelNudge() {
|
||
const nudge = this.nudge;
|
||
this.nudge = null;
|
||
if (nudge) {
|
||
this.place(nudge.item);
|
||
this.options.onNudgeChange?.();
|
||
}
|
||
}
|
||
|
||
commitNudge() {
|
||
if (this.nudgeCommit) return this.nudgeCommit;
|
||
const nudge = this.nudge;
|
||
if (!nudge) return Promise.resolve(true);
|
||
this.nudge = null;
|
||
this.nudgeCommit = Promise.resolve().then(() => nudge.x || nudge.y
|
||
? this.options.onTransform(nudge.item, { x: nudge.x, y: nudge.y, scale: 1 }) : true).finally(() => {
|
||
this.place(nudge.item);
|
||
this.nudgeCommit = null;
|
||
this.options.onNudgeChange?.();
|
||
});
|
||
return this.nudgeCommit;
|
||
}
|
||
|
||
keyDown(event) {
|
||
if (event.defaultPrevented || event.target?.closest("input, textarea, select, [contenteditable]")) return;
|
||
if (this.crop && !this.options.busy()) {
|
||
if (event.key === "Escape" || event.key === "Enter") {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
if (event.key === "Enter") this.commitCrop();
|
||
else if (this.drag) this.cancel();
|
||
else this.closeCrop();
|
||
}
|
||
return;
|
||
}
|
||
this.modifierChange(event);
|
||
if (event.key === "Escape" && this.drag && !this.tool && !this.options.busy()) {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
this.cancel();
|
||
return;
|
||
}
|
||
if (event.key === "Escape" && this.tool && !this.options.busy()) {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
this.setTool("");
|
||
return;
|
||
}
|
||
if (event.key === "Escape" && !this.input && this.enabled && !this.options.busy() && !this.nudge && this.options.onExitScope?.()) {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
return;
|
||
}
|
||
if (this.input || !this.enabled || !this.selected || this.options.busy() || this.nudgeCommit || event.ctrlKey || event.metaKey || event.altKey || event.isComposing) {
|
||
return;
|
||
}
|
||
if (event.key === "Tab" && !this.drag && !this.nudge) {
|
||
const items = this.pageItems(this.selected.index);
|
||
if (items.length) {
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
this.select(items[(items.indexOf(this.selected) + (event.shiftKey ? -1 : 1) + items.length) % items.length]);
|
||
}
|
||
return;
|
||
}
|
||
const directions = { ArrowLeft: [-1, 0], ArrowRight: [1, 0], ArrowUp: [0, -1], ArrowDown: [0, 1] };
|
||
const edit = event.key === "Enter" || event.key === "F2";
|
||
if (event.key !== "Escape" && event.key !== "Delete" && !edit && !directions[event.key]) {
|
||
return;
|
||
}
|
||
event.preventDefault();
|
||
event.stopPropagation();
|
||
if (event.key === "Escape") {
|
||
this.nudge ? this.cancelNudge() : this.drag ? this.cancel() : this.clear();
|
||
} else if (event.key === "Delete" && canEditObject(this.selected, "delete")) {
|
||
if (this.nudge) this.commitNudge().then(saved => { if (saved && this.selected) this.options.onDelete(this.selected); });
|
||
else this.options.onDelete(this.selected);
|
||
} else if (edit && !this.drag && !this.selected.items) {
|
||
if (this.nudge) this.commitNudge().then(saved => { if (saved && this.selected) this.options.onEdit(this.selected); });
|
||
else this.options.onEdit(this.selected);
|
||
} else if (!this.drag && directions[event.key] && canEditObject(this.selected, "move")) {
|
||
const [x, y] = directions[event.key];
|
||
const [dx, dy] = [[x, y], [y, -x], [-x, -y], [-y, x]][this.options.rotation() / 90];
|
||
const step = event.shiftKey ? 10 : 1;
|
||
const nudge = this.nudge ||= { item: this.selected, x: 0, y: 0, keys: new Set() };
|
||
nudge.keys.add(event.key);
|
||
nudge.x += dx * step;
|
||
nudge.y += dy * step;
|
||
this.place(nudge.item, { x: nudge.x, y: nudge.y, scale: 1 });
|
||
this.options.onNudgeChange?.();
|
||
}
|
||
}
|
||
|
||
editText(item, face) {
|
||
this.cancel();
|
||
this.closeText();
|
||
this.select(item);
|
||
document.fonts.add(face);
|
||
const input = document.createElement("div");
|
||
input.className = "edit-text";
|
||
input.setAttribute("aria-label", "编辑文字");
|
||
input.setAttribute("role", "textbox");
|
||
input.setAttribute("aria-multiline", "true");
|
||
input.contentEditable = "true";
|
||
input.spellcheck = false;
|
||
for (const text of item.text.split("\n")) {
|
||
const paragraph = document.createElement("div");
|
||
if (text) paragraph.textContent = text;
|
||
else paragraph.append(document.createElement("br"));
|
||
input.append(paragraph);
|
||
}
|
||
const left = item.leftIndent || 0, right = item.rightIndent || 0;
|
||
const frame = item.textFrame || { width: item.width, height: item.height, matrix: [1, 0, 0, 1, item.x, item.y] };
|
||
const [a, b, c, d, e, f] = frame.matrix;
|
||
Object.assign(input.style, {
|
||
left: "0px", top: "0px",
|
||
width: `${(Math.max(frame.width, item.wrap ? frame.width : 50) - left - right) * PX_PER_MM + 4}px`,
|
||
minHeight: `${frame.height * PX_PER_MM + 4}px`,
|
||
transform: `matrix(${a},${b},${c},${d},${(e + a * left) * PX_PER_MM},${(f + b * left) * PX_PER_MM})`,
|
||
whiteSpace: item.wrap ? "pre-wrap" : "pre",
|
||
fontFamily: `"${face.family}"`, fontSize: `${item.size * PX_PER_MM}px`,
|
||
lineHeight: item.paragraphHeight || item.lineHeight ? `${(item.paragraphHeight || item.lineHeight) * PX_PER_MM}px` : "normal", color: item.color,
|
||
textAlign: item.align || "left",
|
||
letterSpacing: `${(item.letterSpacing || 0) * PX_PER_MM}px`,
|
||
textIndent: `${(item.firstLineIndent || 0) * PX_PER_MM}px`,
|
||
});
|
||
this.input = { input, item, face, fontChoice: item.fontChoice };
|
||
const editing = this.input;
|
||
item.artwork?.classList.add("edit-text-source");
|
||
item.node.classList.add("edit-text-source");
|
||
item.surface.append(input);
|
||
input.addEventListener("input", () => this.options.onTextChange());
|
||
input.addEventListener("compositionstart", () => { editing.composing = true; });
|
||
input.addEventListener("compositionend", () => {
|
||
editing.composing = false;
|
||
Promise.resolve().then(() => {
|
||
if (this.input === editing && editing.commitAfterComposition) this.commitText();
|
||
});
|
||
});
|
||
input.addEventListener("paste", event => {
|
||
event.preventDefault();
|
||
document.execCommand("insertText", false, event.clipboardData.getData("text/plain"));
|
||
});
|
||
input.addEventListener("beforeinput", event => {
|
||
if (event.inputType.startsWith("format")) event.preventDefault();
|
||
if (event.inputType === "insertLineBreak") {
|
||
event.preventDefault();
|
||
document.execCommand("insertParagraph");
|
||
}
|
||
});
|
||
input.addEventListener("blur", (event) => {
|
||
const selection = document.getSelection();
|
||
if (selection?.rangeCount && input.contains(selection.anchorNode)) editing.range = selection.getRangeAt(0).cloneRange();
|
||
if (!this.options.textControls?.includes(event.relatedTarget)) this.commitText();
|
||
});
|
||
input.addEventListener("focus", () => {
|
||
if (editing.range) {
|
||
const selection = document.getSelection();
|
||
selection.removeAllRanges();
|
||
selection.addRange(editing.range);
|
||
editing.range = null;
|
||
}
|
||
});
|
||
input.addEventListener("keydown", (event) => {
|
||
if ((event.ctrlKey || event.metaKey) && !event.altKey && !event.shiftKey && event.key.toLowerCase() === "s") return;
|
||
event.stopPropagation();
|
||
if (event.isComposing || editing.composing || editing.saving) {
|
||
return;
|
||
}
|
||
if (event.key === "Escape") {
|
||
event.preventDefault();
|
||
this.closeText();
|
||
this.focus();
|
||
} else if (event.key === "Enter" && (event.ctrlKey || event.metaKey)) {
|
||
event.preventDefault();
|
||
this.commitText();
|
||
}
|
||
});
|
||
input.focus({ preventScroll: true });
|
||
if (!item.draft) document.getSelection().selectAllChildren(input);
|
||
}
|
||
|
||
setTextFont(face, data) {
|
||
const editing = this.input;
|
||
document.fonts.add(face);
|
||
document.fonts.delete(editing.face);
|
||
editing.face = face;
|
||
editing.fontData = data;
|
||
editing.input.style.fontFamily = `"${face.family}"`;
|
||
this.options.onTextChange();
|
||
editing.input.focus({ preventScroll: true });
|
||
}
|
||
|
||
setTextStyle(values) {
|
||
const editing = this.input;
|
||
const style = { ...editing.style, ...values };
|
||
for (const key of Object.keys(style)) if (style[key] === editing.item[key]) delete style[key];
|
||
editing.style = Object.keys(style).length ? style : null;
|
||
const item = { ...editing.item, ...editing.style };
|
||
editing.input.style.fontSize = `${item.size * PX_PER_MM}px`;
|
||
editing.input.style.color = item.color;
|
||
this.options.onTextChange();
|
||
}
|
||
|
||
textChanged() {
|
||
const editing = this.input;
|
||
if (!editing) return false;
|
||
const value = editTextValue(editing.input);
|
||
return (!editing.item.draft || Boolean(value.trim()))
|
||
&& (value !== editing.item.text || Boolean(editing.fontData || editing.style));
|
||
}
|
||
|
||
async commitText() {
|
||
const editing = this.input;
|
||
if (!editing) return true;
|
||
if (editing.saving) return false;
|
||
if (editing.composing) {
|
||
editing.commitAfterComposition = true;
|
||
return false;
|
||
}
|
||
editing.commitAfterComposition = false;
|
||
const value = editTextValue(editing.input);
|
||
if (!this.textChanged()) {
|
||
this.closeText();
|
||
return true;
|
||
}
|
||
editing.saving = true;
|
||
editing.input.contentEditable = "false";
|
||
const saved = await this.options.onCommitText(editing.style ? { ...editing.item, ...editing.style } : editing.item, value, editing.fontData, editing.style?.color ?? null);
|
||
if (this.input !== editing) {
|
||
return Boolean(saved);
|
||
}
|
||
if (saved) {
|
||
this.closeText();
|
||
} else {
|
||
editing.saving = false;
|
||
editing.input.contentEditable = "true";
|
||
editing.input.focus({ preventScroll: true });
|
||
}
|
||
return Boolean(saved);
|
||
}
|
||
|
||
closeText() {
|
||
const editing = this.input;
|
||
this.input = null;
|
||
if (editing) {
|
||
editing.input.remove();
|
||
editing.item.artwork?.classList.remove("edit-text-source");
|
||
editing.item.node.classList.remove("edit-text-source");
|
||
document.fonts.delete(editing.face);
|
||
if (editing.item.draft && this.selected === editing.item) this.select(null);
|
||
this.options.onTextChange();
|
||
}
|
||
}
|
||
|
||
startCrop(item, pagePreview) {
|
||
this.cancel();
|
||
this.closeCrop();
|
||
this.setTool("");
|
||
const bounds = item.imageBounds;
|
||
const x = Math.max(item.x, bounds.x), y = Math.max(item.y, bounds.y);
|
||
const box = { x, y, width: Math.min(item.x + item.width, bounds.x + bounds.width) - x,
|
||
height: Math.min(item.y + item.height, bounds.y + bounds.height) - y };
|
||
const original = item.surface.querySelector(".ofd-svg");
|
||
original.replaceWith(pagePreview.svg);
|
||
const { preview, node: mask } = this.createPreview(item.surface, item.page, "path", { fill: true, fillColor: "rgba(255,255,255,0.72)" });
|
||
mask.setAttribute("fill-rule", "evenodd");
|
||
const node = document.createElement("div");
|
||
node.className = "edit-layer edit-crop";
|
||
for (const corner of ["nw", "n", "ne", "e", "se", "s", "sw", "w"]) {
|
||
const handle = document.createElement("span");
|
||
handle.className = `edit-handle edit-${corner}`;
|
||
handle.dataset.corner = corner;
|
||
node.append(handle);
|
||
}
|
||
item.surface.append(node);
|
||
item.surface.classList.add("cropping");
|
||
this.crop = { item, box, initialBox: { ...box }, node, mask, preview, original, pagePreview };
|
||
this.paintCrop();
|
||
this.focus();
|
||
}
|
||
|
||
paintCrop() {
|
||
const { item, box, node, mask } = this.crop;
|
||
const rectangle = b => `M${b.x} ${b.y}h${b.width}v${b.height}h${-b.width}Z`;
|
||
mask.setAttribute("d", rectangle(item.imageBounds) + rectangle(box));
|
||
Object.assign(node.style, { left: `${box.x * PX_PER_MM}px`, top: `${box.y * PX_PER_MM}px`, width: `${box.width * PX_PER_MM}px`, height: `${box.height * PX_PER_MM}px` });
|
||
this.options.onCropChange();
|
||
}
|
||
|
||
cropChanged() {
|
||
return Boolean(this.crop && ["x", "y", "width", "height"].some(key => this.crop.box[key] !== this.crop.initialBox[key]));
|
||
}
|
||
|
||
async commitCrop() {
|
||
if (!this.crop) return true;
|
||
if (this.options.busy()) return false;
|
||
if (!this.cropChanged()) {
|
||
this.closeCrop();
|
||
return true;
|
||
}
|
||
const crop = this.crop;
|
||
const saved = await this.options.onCrop(crop.item, crop.box);
|
||
if (saved && this.crop === crop) this.closeCrop();
|
||
return Boolean(saved);
|
||
}
|
||
|
||
closeCrop(keepPreview = false) {
|
||
if (!this.crop) return;
|
||
if (this.drag?.crop) this.cancel();
|
||
const crop = this.crop;
|
||
this.crop = null;
|
||
crop.node.remove();
|
||
crop.preview.remove();
|
||
crop.pagePreview.svg.replaceWith(crop.original);
|
||
if (!keepPreview) crop.pagePreview.urls.forEach(url => URL.revokeObjectURL(url));
|
||
crop.item.surface.classList.remove("cropping");
|
||
this.options.onCropChange();
|
||
}
|
||
}
|