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48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
class GestureHandler {
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constructor(sidebar) {
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this.sidebar = sidebar;
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this.startX = 0;
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this.startY = 0;
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this.tracking = false;
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document.addEventListener('touchstart', (e) => this.onTouchStart(e), { passive: true });
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document.addEventListener('touchmove', (e) => this.onTouchMove(e), { passive: true });
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document.addEventListener('touchend', (e) => this.onTouchEnd(e), { passive: true });
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}
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onTouchStart(e) {
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const touch = e.touches[0];
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this.startX = touch.clientX;
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this.startY = touch.clientY;
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this.tracking = true;
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}
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onTouchMove(e) {
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if (!this.tracking) return;
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}
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onTouchEnd(e) {
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if (!this.tracking) return;
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this.tracking = false;
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const touch = e.changedTouches[0];
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const dx = touch.clientX - this.startX;
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const dy = touch.clientY - this.startY;
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// Minimum swipe distance
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if (Math.abs(dx) < 50 || Math.abs(dy) > Math.abs(dx)) return;
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// Swipe right from left edge = open sidebar
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if (dx > 0 && this.startX < 50) {
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this.sidebar.open();
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}
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// Swipe left = close sidebar
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if (dx < 0 && this.sidebar.isOpen()) {
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this.sidebar.close();
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}
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}
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}
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window.GestureHandler = GestureHandler;
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