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package flamegraph
const flamegraphJS = `
const fg = {
frames: [],
info: null,
matchColor: "rgb(220, 30, 70)",
zoomStack: [],
zoomRange: null,
rootWidth: 0,
};
function fgInit() {
fg.frames = Array.from(document.querySelectorAll("g.frame"));
fg.info = document.getElementById("fg-info");
fg.rootWidth = fgDetectRootWidth();
fg.frames.forEach((frame) => {
fgSnapshotOriginalGeometry(frame);
frame.addEventListener("click", (ev) => {
if (ev.detail > 1) return;
ev.stopPropagation();
fgZoom(ev.currentTarget);
});
frame.addEventListener("dblclick", (ev) => {
ev.preventDefault();
ev.stopPropagation();
fgResetZoom();
});
frame.addEventListener("mouseenter", (ev) => fgHover(ev.currentTarget));
});
document.addEventListener("dblclick", (ev) => {
ev.preventDefault();
fgResetZoom();
});
}
function fgHover(frame) {
if (!fg.info) return;
const title = frame.querySelector("title");
fg.info.textContent = title ? title.textContent : "";
}
function fgZoom(frame) {
const x = fgOriginalX(frame);
const w = fgOriginalW(frame);
if (w <= 0) return;
if (fg.zoomRange) {
fg.zoomStack.push(fg.zoomRange);
}
fg.zoomRange = { x: x, w: w, depth: Number(frame.dataset.depth || "0") };
fgApplyZoom();
}
function fgApplyZoom() {
if (!fg.zoomRange) {
fg.frames.forEach((frame) => {
frame.style.display = "";
});
return;
}
const x = fg.zoomRange.x;
const end = x + fg.zoomRange.w;
const width = fg.zoomRange.w;
const minDepth = fg.zoomRange.depth;
const eps = 1e-6;
const scale = fg.rootWidth / width;
fg.frames.forEach((other) => {
const ox = fgOriginalX(other);
const ow = fgOriginalW(other);
const depth = Number(other.dataset.depth || "0");
const inSelectedRange = ox >= x-eps && ox+ow <= end+eps;
const isAncestor = depth < minDepth && ox <= x+eps && ox+ow >= end-eps;
if (isAncestor || (depth >= minDepth && inSelectedRange)) {
if (isAncestor) {
fgSetFrameGeometry(other, 0, fg.rootWidth);
} else {
fgSetFrameGeometry(other, (ox-x)*scale, ow*scale);
}
other.style.display = "";
} else {
other.style.display = "none";
}
});
}
function fgUndoZoom() {
if (fg.zoomStack.length === 0) {
fgResetZoom();
return;
}
fg.zoomRange = fg.zoomStack.pop();
fgApplyZoom();
}
function fgResetZoom() {
fg.zoomStack = [];
fg.zoomRange = null;
fg.frames.forEach((frame) => {
fgRestoreFrameGeometry(frame);
frame.style.display = "";
});
}
function fgSearch() {
const needle = prompt("Search frames (substring):", "");
if (needle === null) return;
const q = needle.trim().toLowerCase();
fg.frames.forEach((frame) => {
const rect = frame.querySelector("rect");
const base = frame.dataset.baseFill || "";
const name = (frame.dataset.name || "").toLowerCase();
if (!rect) return;
if (q !== "" && name.includes(q)) {
rect.style.fill = fg.matchColor;
} else {
rect.style.fill = base;
}
});
}
function fgResetSearch() {
fg.frames.forEach((frame) => {
const rect = frame.querySelector("rect");
if (!rect) return;
rect.style.fill = frame.dataset.baseFill || "";
});
}
function fgDetectRootWidth() {
let maxEnd = 0;
fg.frames.forEach((frame) => {
const x = Number(frame.dataset.x || "0");
const w = Number(frame.dataset.w || "0");
maxEnd = Math.max(maxEnd, x + w);
});
return maxEnd;
}
function fgSnapshotOriginalGeometry(frame) {
const rect = frame.querySelector("rect");
const text = frame.querySelector("text");
frame.dataset.ox = frame.dataset.x || "0";
frame.dataset.ow = frame.dataset.w || "0";
if (rect) {
rect.dataset.ox = rect.getAttribute("x") || "0";
rect.dataset.ow = rect.getAttribute("width") || "0";
}
if (text) {
text.dataset.ox = text.getAttribute("x") || "0";
text.dataset.hidden = text.style.display === "none" ? "1" : "0";
text.dataset.full = text.textContent || frame.dataset.name || "";
}
}
function fgOriginalX(frame) {
return Number(frame.dataset.ox || frame.dataset.x || "0");
}
function fgOriginalW(frame) {
return Number(frame.dataset.ow || frame.dataset.w || "0");
}
function fgSetFrameGeometry(frame, x, w) {
const rect = frame.querySelector("rect");
const text = frame.querySelector("text");
if (rect) {
rect.setAttribute("x", String(x));
rect.setAttribute("width", String(w));
}
if (text) {
text.setAttribute("x", String(x + 3));
fgFitLabel(text, w);
}
}
function fgRestoreFrameGeometry(frame) {
const rect = frame.querySelector("rect");
const text = frame.querySelector("text");
if (rect) {
rect.setAttribute("x", rect.dataset.ox || "0");
rect.setAttribute("width", rect.dataset.ow || "0");
}
if (text) {
text.setAttribute("x", text.dataset.ox || "0");
if (text.dataset.hidden === "1") {
text.style.display = "none";
text.textContent = text.dataset.full || "";
} else {
fgFitLabel(text, Number(rect ? (rect.dataset.ow || "0") : "0"));
}
}
}
function fgFitLabel(text, width) {
const full = text.dataset.full || text.textContent || "";
const maxChars = Math.floor((width - 6) / 7);
if (maxChars < 3) {
text.style.display = "none";
text.textContent = full;
return;
}
text.style.display = "";
if (full.length <= maxChars) {
text.textContent = full;
return;
}
text.textContent = full.slice(0, maxChars - 1) + "…";
}
window.addEventListener("DOMContentLoaded", fgInit);
`
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