feat: Modal zum manuellen Erstellen von Farbschemata
This commit is contained in:
Ferdinand
192
js/schema-modal.js
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192
js/schema-modal.js
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import { hexToHsl, hslToHex, rgbToHsl, rgbToHex } from './converter.js';
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const MAX_FARBEN = 4;
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// Aktuell gesammelter Zustand des Modals
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let farben = []; // Array von HSL-Objekten
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let aktuelleHex = ''; // Hex-Wert des aktuellen Eingabefelds
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function resetModal() {
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farben = [];
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aktuelleHex = '';
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document.getElementById('schema-name-input').value = '';
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document.getElementById('schema-hex-input').value = '';
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document.getElementById('schema-hex-preview').style.background = '#eee';
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document.getElementById('schema-farben-preview').textContent = '';
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document.getElementById('schema-canvas').style.display = 'none';
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document.getElementById('schema-canvas').getContext('2d').clearRect(0, 0, 1, 1);
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document.getElementById('schema-farbe-eingabe').style.display = 'block';
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document.getElementById('schema-abschliessen-btn').disabled = true;
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updateFarbeLabel();
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}
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function updateFarbeLabel() {
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document.getElementById('schema-farbe-label').textContent =
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'Farbe ' + (farben.length + 1) + (farben.length === MAX_FARBEN - 1 ? ' (letzte)' : '');
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}
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function renderFarbenPreview() {
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const container = document.getElementById('schema-farben-preview');
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container.textContent = '';
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farben.forEach((hsl, i) => {
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const hex = hslToHex(hsl);
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const cell = document.createElement('div');
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cell.style.cssText = 'display:inline-flex;flex-direction:column;align-items:center;gap:0.2rem';
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const swatch = document.createElement('div');
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swatch.style.cssText = 'width:44px;height:44px;border-radius:6px;border:1px solid #ddd;background:' + hex;
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swatch.title = hex;
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const label = document.createElement('span');
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label.style.cssText = 'font-size:0.7rem;font-family:monospace;color:#666';
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label.textContent = hex;
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const removeBtn = document.createElement('button');
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removeBtn.className = 'action-btn';
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removeBtn.style.fontSize = '0.65rem';
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removeBtn.textContent = '✕';
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removeBtn.addEventListener('click', () => {
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farben.splice(i, 1);
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renderFarbenPreview();
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updateFarbeLabel();
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document.getElementById('schema-farbe-eingabe').style.display = 'block';
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document.getElementById('schema-abschliessen-btn').disabled = farben.length === 0;
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});
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cell.appendChild(swatch);
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cell.appendChild(label);
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cell.appendChild(removeBtn);
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container.appendChild(cell);
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});
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}
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function loadImageOnCanvas(file) {
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const reader = new FileReader();
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reader.onload = (e) => {
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const img = new Image();
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img.onload = () => {
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const canvas = document.getElementById('schema-canvas');
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canvas.width = img.width;
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canvas.height = img.height;
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const ctx = canvas.getContext('2d');
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ctx.drawImage(img, 0, 0);
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canvas.style.display = 'block';
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// Mittlerer Pixel als Vorschlag
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const px = ctx.getImageData(Math.floor(img.width / 2), Math.floor(img.height / 2), 1, 1).data;
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setAktuelleHex(rgbToHex({ r: px[0], g: px[1], b: px[2] }));
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canvas.onclick = (ev) => {
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const rect = canvas.getBoundingClientRect();
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const x = Math.floor((ev.clientX - rect.left) * canvas.width / rect.width);
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const y = Math.floor((ev.clientY - rect.top) * canvas.height / rect.height);
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const d = ctx.getImageData(x, y, 1, 1).data;
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setAktuelleHex(rgbToHex({ r: d[0], g: d[1], b: d[2] }));
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};
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};
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img.src = e.target.result;
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};
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reader.readAsDataURL(file);
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}
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function setAktuelleHex(hex) {
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aktuelleHex = hex;
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document.getElementById('schema-hex-input').value = hex;
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document.getElementById('schema-hex-preview').style.background = hex;
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}
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export function initSchemaModal(onSave) {
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// Button öffnet Modal
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document.getElementById('schema-erstellen-btn').addEventListener('click', () => {
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resetModal();
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document.getElementById('schema-modal-overlay').style.display = 'flex';
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document.getElementById('schema-name-input').focus();
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});
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// Abbrechen
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document.getElementById('schema-abbrechen-btn').addEventListener('click', () => {
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document.getElementById('schema-modal-overlay').style.display = 'none';
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});
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// Klick außerhalb schließt Modal
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document.getElementById('schema-modal-overlay').addEventListener('click', (e) => {
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if (e.target === document.getElementById('schema-modal-overlay')) {
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document.getElementById('schema-modal-overlay').style.display = 'none';
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}
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});
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// Hex-Eingabe → Vorschau aktualisieren
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document.getElementById('schema-hex-input').addEventListener('input', (e) => {
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const val = e.target.value.trim();
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if (/^#[0-9a-fA-F]{6}$/.test(val)) {
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aktuelleHex = val;
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document.getElementById('schema-hex-preview').style.background = val;
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}
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});
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// Datei-Upload
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document.getElementById('schema-file-trigger').addEventListener('click', () => {
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document.getElementById('schema-file-input').click();
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});
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document.getElementById('schema-file-input').addEventListener('change', (e) => {
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if (e.target.files[0]) loadImageOnCanvas(e.target.files[0]);
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});
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// Drag & Drop auf Modal-Dropzone
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const dropzone = document.getElementById('schema-dropzone');
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dropzone.addEventListener('dragover', (e) => { e.preventDefault(); dropzone.style.borderColor = '#222'; });
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dropzone.addEventListener('dragleave', () => { dropzone.style.borderColor = '#ccc'; });
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dropzone.addEventListener('drop', (e) => {
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e.preventDefault();
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dropzone.style.borderColor = '#ccc';
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const file = e.dataTransfer.files[0];
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if (file && file.type.startsWith('image/')) loadImageOnCanvas(file);
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});
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// Farbe hinzufügen
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document.getElementById('schema-farbe-hinzufuegen-btn').addEventListener('click', () => {
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if (!/^#[0-9a-fA-F]{6}$/.test(aktuelleHex)) {
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document.getElementById('schema-hex-input').style.borderColor = '#e55';
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document.getElementById('schema-hex-input').focus();
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return;
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}
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document.getElementById('schema-hex-input').style.borderColor = '';
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const hsl = hexToHsl(aktuelleHex);
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if (!hsl) return;
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farben.push(hsl);
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renderFarbenPreview();
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document.getElementById('schema-abschliessen-btn').disabled = false;
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// Eingabe zurücksetzen
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aktuelleHex = '';
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document.getElementById('schema-hex-input').value = '';
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document.getElementById('schema-hex-preview').style.background = '#eee';
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document.getElementById('schema-canvas').style.display = 'none';
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document.getElementById('schema-file-input').value = '';
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if (farben.length >= MAX_FARBEN) {
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// Alle 4 Farben gesammelt — Eingabe ausblenden
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document.getElementById('schema-farbe-eingabe').style.display = 'none';
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} else {
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updateFarbeLabel();
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document.getElementById('schema-hex-input').focus();
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}
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});
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// Abschließen
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document.getElementById('schema-abschliessen-btn').addEventListener('click', () => {
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const name = document.getElementById('schema-name-input').value.trim();
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if (!name) {
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document.getElementById('schema-name-input').style.borderColor = '#e55';
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document.getElementById('schema-name-input').focus();
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return;
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}
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if (farben.length === 0) return;
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onSave(name, farben);
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document.getElementById('schema-modal-overlay').style.display = 'none';
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});
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}
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