controlRLByKeyboard method

Implementation

KeyEventResult controlRLByKeyboard(FocusNode node, KeyEvent event) {
  // على الويب، التقط فقط KeyDown لتجنب التكرارات أو التعارض مع KeyUp
  if (event is! KeyDownEvent) return KeyEventResult.ignored;

  // تأكد من جاهزية المتحكم قبل التحريك
  if (!quranPagesController.hasClients) return KeyEventResult.ignored;

  // وضع الصفحتين (viewportFraction < 1): نقفز بمقدار 2
  final step = quranPagesController.viewportFraction < 1.0 ? 2 : 1;
  final currentIndex = quranPagesController.page?.round() ?? 0;

  if (event.logicalKey == LogicalKeyboardKey.arrowLeft) {
    log('Left Arrow Pressed');
    final target = currentIndex + step;
    if (target <= 603) {
      quranPagesController.animateToPage(
        target,
        duration: const Duration(milliseconds: 600),
        curve: Curves.easeInOut,
      );
    }
    return KeyEventResult.handled;
  } else if (event.logicalKey == LogicalKeyboardKey.arrowRight) {
    log('Right Arrow Pressed');
    final target = currentIndex - step;
    if (target >= 0) {
      quranPagesController.animateToPage(
        target,
        duration: const Duration(milliseconds: 600),
        curve: Curves.easeInOut,
      );
    }
    return KeyEventResult.handled;
  }
  return KeyEventResult.ignored;
}