Files
photo-renamer/src/renderer/handlers/image-preview.js
T

146 lines
3.1 KiB
JavaScript

const HIDE_DELAY = 100;
let _el = null;
let _imgEl = null;
let _hideTimer = null;
let _visible = false;
let _activeCard = null;
let _hoverCard = null;
let _enabled = true;
let _showSeq = 0;
export function init() {
_el = document.createElement('div');
_el.className = 'hover-preview';
_imgEl = document.createElement('img');
_el.appendChild(_imgEl);
document.body.appendChild(_el);
}
export function setEnabled(v) {
_enabled = v;
if (!v) {
clearTimeout(_hideTimer); _hideTimer = null;
_hideNow();
return;
}
if (_hoverCard?.isConnected) {
_showForCard(_hoverCard);
}
}
export function setupCard(card) {
card.addEventListener('mouseenter', _onEnter);
card.addEventListener('mouseleave', _onLeave);
}
function _onEnter() {
const card = this;
_hoverCard = card;
if (!_enabled) return;
_activeCard = card;
if (_hideTimer) {
clearTimeout(_hideTimer);
_hideTimer = null;
}
if (_visible) {
_switchTo(card);
return;
}
_showForCard(card);
}
function _onLeave() {
if (_hoverCard === this) _hoverCard = null;
if (!_visible) {
return;
}
_hideTimer = setTimeout(() => {
_hideTimer = null;
_hideNow();
}, HIDE_DELAY);
}
// ── 팝업 내용 전환 (이미 열린 상태에서 카드 변경) ──
async function _showForCard(card) {
const seq = ++_showSeq;
_activeCard = card;
const src = await _loadSrc(card);
if (!src || !_enabled || _activeCard !== card || seq !== _showSeq) return;
_imgEl.src = src;
_visible = true;
_show(card);
}
async function _switchTo(card) {
const seq = ++_showSeq;
const src = await _loadSrc(card);
if (!src || !_enabled || _activeCard !== card || seq !== _showSeq) return;
_imgEl.src = src;
_show(card);
}
// ── 이미지 소스 반환 (카드 썸네일 캐시 우선) ──
async function _loadSrc(card) {
const thumb = card.querySelector('img.card-thumb');
let src = thumb?.src || '';
if (!src) {
src = await window.api.readImage(card.dataset.filepath) || '';
if (src && thumb) thumb.src = src;
}
return src;
}
function _hideNow() {
_showSeq++;
_activeCard = null;
_visible = false;
_el.style.display = 'none';
_el.style.visibility = 'hidden';
}
// ── 이미지 팝업 위치 계산 및 표시 ────────────────
function _show(card) {
_el.style.display = 'block';
_el.style.visibility = 'hidden';
_el.style.left = '0px';
_el.style.top = '0px';
requestAnimationFrame(() => {
if (!_visible) return;
const popup = _el.getBoundingClientRect();
const cardRect = card.getBoundingClientRect();
const vw = window.innerWidth;
const vh = window.innerHeight;
const gap = 16;
let left = cardRect.right + gap;
if (left + popup.width > vw - 8) {
left = cardRect.left - popup.width - gap;
}
left = Math.max(8, Math.min(left, vw - popup.width - 8));
let top = cardRect.top + (cardRect.height - popup.height) / 2;
top = Math.max(8, Math.min(top, vh - popup.height - 8));
_el.style.left = left + 'px';
_el.style.top = top + 'px';
_el.style.visibility = 'visible';
});
}