MMPCreator
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// js/ui.js
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import {
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appState,
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toggleStepState,
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updateTrackSample,
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updateTrackVolume,
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updateTrackPan,
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} from "./state.js";
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import { playSample } from "./audio.js";
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import { getTotalSteps } from "./utils.js";
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import { loadProjectFromServer } from "./file.js"; // (CORREÇÃO) Importa a função que faltava
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// RENDERIZAÇÃO PRINCIPAL
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export function renderApp() {
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const trackContainer = document.getElementById("track-container");
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trackContainer.innerHTML = "";
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appState.tracks.forEach((trackData) => {
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const trackLane = document.createElement("div");
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trackLane.className = "track-lane";
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trackLane.dataset.trackId = trackData.id;
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trackLane.innerHTML = `
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<div class="track-info"><i class="fa-solid fa-gear"></i><div class="track-mute"></div><span class="track-name">${trackData.name}</span></div>
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<div class="track-controls">
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<div class="knob-container">
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<div class="knob" data-control="volume" data-track-id="${trackData.id}">
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<div class="knob-indicator"></div>
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</div>
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<span>VOL</span>
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</div>
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<div class="knob-container">
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<div class="knob" data-control="pan" data-track-id="${trackData.id}">
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<div class="knob-indicator"></div>
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</div>
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<span>PAN</span>
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</div>
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</div>
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<div class="step-sequencer"></div>
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`;
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trackLane.addEventListener("dragover", (e) => {
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e.preventDefault();
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trackLane.classList.add("drag-over");
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});
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trackLane.addEventListener("dragleave", () =>
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trackLane.classList.remove("drag-over")
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);
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trackLane.addEventListener("drop", (e) => {
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e.preventDefault();
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trackLane.classList.remove("drag-over");
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const filePath = e.dataTransfer.getData("text/plain");
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if (filePath) {
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updateTrackSample(trackData.id, filePath);
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}
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});
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trackContainer.appendChild(trackLane);
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const volumeKnob = trackLane.querySelector(".knob[data-control='volume']");
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addKnobInteraction(volumeKnob);
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updateKnobVisual(volumeKnob, "volume");
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const panKnob = trackLane.querySelector(".knob[data-control='pan']");
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addKnobInteraction(panKnob);
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updateKnobVisual(panKnob, "pan");
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});
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redrawSequencer();
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}
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export function redrawSequencer() {
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const beatsPerBar =
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parseInt(document.getElementById("compasso-a-input").value, 10) || 4;
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const totalSteps = getTotalSteps();
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document.querySelectorAll(".step-sequencer").forEach((container) => {
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const parentTrackElement = container.closest(".track-lane");
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const trackId = parentTrackElement.dataset.trackId;
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const trackData = appState.tracks.find((t) => t.id == trackId);
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if (trackData && trackData.steps.length !== totalSteps) {
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const newStepsState = new Array(totalSteps).fill(false);
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for (let i = 0; i < Math.min(trackData.steps.length, totalSteps); i++) {
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newStepsState[i] = trackData.steps[i];
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}
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trackData.steps = newStepsState;
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}
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container.innerHTML = "";
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for (let i = 0; i < totalSteps; i++) {
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const stepWrapper = document.createElement("div");
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stepWrapper.className = "step-wrapper";
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const stepElement = document.createElement("div");
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stepElement.className = "step";
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if (trackData && trackData.steps[i] === true) {
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stepElement.classList.add("active");
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}
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stepElement.addEventListener("click", () => {
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toggleStepState(trackData.id, i);
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stepElement.classList.toggle("active");
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if (trackData && trackData.samplePath) {
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playSample(trackData.samplePath, trackData.id);
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}
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});
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const groupIndex = Math.floor(i / beatsPerBar);
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if (groupIndex % 2 === 0) {
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stepElement.classList.add("step-dark");
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}
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if (i > 0 && i % beatsPerBar === 0) {
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const marker = document.createElement("div");
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marker.className = "step-marker";
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marker.textContent = i;
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stepWrapper.appendChild(marker);
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}
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stepWrapper.appendChild(stepElement);
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container.appendChild(stepWrapper);
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}
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});
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}
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// LÓGICA DE INTERAÇÃO DOS KNOBS
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function addKnobInteraction(knobElement) {
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const controlType = knobElement.dataset.control;
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knobElement.addEventListener("mousedown", (e) => {
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if (e.button === 1) {
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e.preventDefault();
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const trackId = knobElement.dataset.trackId;
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const defaultValue = controlType === "volume" ? 0.8 : 0.0;
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if (controlType === "volume") {
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updateTrackVolume(trackId, defaultValue);
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} else {
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updateTrackPan(trackId, defaultValue);
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}
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}
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});
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knobElement.addEventListener("mousedown", (e) => {
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if (e.button !== 0) return;
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e.preventDefault();
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const trackId = knobElement.dataset.trackId;
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const track = appState.tracks.find((t) => t.id == trackId);
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if (!track) return;
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const startY = e.clientY;
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const startValue = controlType === "volume" ? track.volume : track.pan;
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document.body.classList.add("knob-dragging");
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function onMouseMove(moveEvent) {
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const deltaY = startY - moveEvent.clientY;
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const sensitivity = controlType === "volume" ? 150 : 200;
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const newValue = startValue + deltaY / sensitivity;
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if (controlType === "volume") {
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updateTrackVolume(trackId, newValue);
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} else {
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updateTrackPan(trackId, newValue);
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}
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}
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function onMouseUp() {
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document.body.classList.remove("knob-dragging");
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document.removeEventListener("mousemove", onMouseMove);
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document.removeEventListener("mouseup", onMouseUp);
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}
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document.addEventListener("mousemove", onMouseMove);
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document.addEventListener("mouseup", onMouseUp);
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});
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knobElement.addEventListener("wheel", (e) => {
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e.preventDefault();
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const trackId = knobElement.dataset.trackId;
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const track = appState.tracks.find((t) => t.id == trackId);
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if (!track) return;
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const step = 0.05;
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const direction = e.deltaY < 0 ? 1 : -1;
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if (controlType === "volume") {
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const newValue = track.volume + direction * step;
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updateTrackVolume(trackId, newValue);
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} else {
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const newValue = track.pan + direction * step;
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updateTrackPan(trackId, newValue);
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}
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});
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}
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function updateKnobVisual(knobElement, controlType) {
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const trackId = knobElement.dataset.trackId;
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const track = appState.tracks.find((t) => t.id == trackId);
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if (!track) return;
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const indicator = knobElement.querySelector(".knob-indicator");
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if (!indicator) return;
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const minAngle = -135;
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const maxAngle = 135;
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let percentage = 0.5;
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let title = "";
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if (controlType === "volume") {
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const value = track.volume;
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const clampedValue = Math.max(0, Math.min(1.5, value));
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percentage = clampedValue / 1.5;
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title = `Volume: ${Math.round(clampedValue * 100)}%`;
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} else {
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const value = track.pan;
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const clampedValue = Math.max(-1, Math.min(1, value));
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percentage = (clampedValue + 1) / 2;
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const panDisplay = Math.round(clampedValue * 100);
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title = `Pan: ${
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panDisplay === 0
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? "Centro"
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: panDisplay < 0
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? `${-panDisplay} L`
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: `${panDisplay} R`
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}`;
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}
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const angle = minAngle + percentage * (maxAngle - minAngle);
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indicator.style.transform = `translateX(-50%) rotate(${angle}deg)`;
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knobElement.title = title;
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}
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export function highlightStep(stepIndex, isActive) {
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if (stepIndex < 0) return;
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document.querySelectorAll(".track-lane").forEach((track) => {
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const stepWrapper = track.querySelector(
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`.step-sequencer .step-wrapper:nth-child(${stepIndex + 1})`
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);
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if (stepWrapper) {
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const stepElement = stepWrapper.querySelector(".step");
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if (stepElement) {
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stepElement.classList.toggle("playing", isActive);
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}
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}
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});
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}
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// LÓGICA DA SIDEBAR E MODAL
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export async function loadAndRenderSampleBrowser() {
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const browserContent = document.getElementById("browser-content");
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try {
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const response = await fetch("metadata/samples-manifest.json");
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if (!response.ok) {
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throw new Error("Arquivo samples-manifest.json não encontrado.");
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}
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const fileTree = await response.json();
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renderFileTree(fileTree, browserContent, "src/samples");
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} catch (error) {
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console.error("Erro ao carregar samples:", error);
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browserContent.innerHTML = `<p style="color:var(--accent-red); padding: 10px;">${error.message}</p>`;
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}
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}
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function renderFileTree(tree, parentElement, currentPath) {
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parentElement.innerHTML = "";
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const ul = document.createElement("ul");
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const sortedKeys = Object.keys(tree).sort((a, b) => {
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const aIsFile = tree[a]._isFile;
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const bIsFile = tree[b]._isFile;
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if (aIsFile === bIsFile) return a.localeCompare(b);
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return aIsFile ? 1 : -1;
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});
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for (const key of sortedKeys) {
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const node = tree[key];
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const li = document.createElement("li");
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const newPath = `${currentPath}/${key}`;
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if (node._isFile) {
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li.innerHTML = `<i class="fa-solid fa-file-audio"></i> ${key}`;
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li.setAttribute("draggable", true);
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li.addEventListener("click", (e) => {
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e.stopPropagation();
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playSample(newPath, null);
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});
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li.addEventListener("dragstart", (e) => {
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e.dataTransfer.setData("text/plain", newPath);
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e.dataTransfer.effectAllowed = "copy";
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});
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ul.appendChild(li);
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} else {
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li.className = "directory";
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li.innerHTML = `<i class="fa-solid fa-folder"></i> ${key}`;
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const nestedUl = document.createElement("ul");
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renderFileTree(node, nestedUl, newPath);
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li.appendChild(nestedUl);
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li.addEventListener("click", (e) => {
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e.stopPropagation();
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li.classList.toggle("open");
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});
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ul.appendChild(li);
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}
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}
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parentElement.appendChild(ul);
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}
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export async function showOpenProjectModal() {
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const openProjectModal = document.getElementById("open-project-modal");
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const serverProjectsList = document.getElementById("server-projects-list");
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serverProjectsList.innerHTML = "<p>Carregando...</p>";
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openProjectModal.classList.add("visible");
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try {
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const response = await fetch("metadata/mmp-manifest.json");
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if (!response.ok)
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throw new Error("Arquivo mmp-manifest.json não encontrado.");
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const projects = await response.json();
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serverProjectsList.innerHTML = "";
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if (projects.length === 0) {
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serverProjectsList.innerHTML =
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'<p style="color:var(--text-dark);">Nenhum projeto encontrado no servidor.</p>';
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}
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projects.forEach((projectName) => {
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const projectItem = document.createElement("div");
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projectItem.className = "project-item";
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projectItem.textContent = projectName;
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projectItem.addEventListener("click", async () => {
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const success = await loadProjectFromServer(projectName);
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if (success) {
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closeOpenProjectModal();
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}
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});
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serverProjectsList.appendChild(projectItem);
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});
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} catch (error) {
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console.error("Erro ao carregar lista de projetos:", error);
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serverProjectsList.innerHTML = `<p style="color:var(--accent-red);">${error.message}</p>`;
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}
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}
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export function closeOpenProjectModal() {
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const openProjectModal = document.getElementById("open-project-modal");
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openProjectModal.classList.remove("visible");
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}
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