isMenuOpen property

bool get isMenuOpen

Is menu open

Implementation

bool get isMenuOpen => _isMenuOpen;

set isMenuOpen (bool isOpen)

Open or close menu with animation. Animate double from 0 -> 1 (close -> open) and do slide and width calculations based on that value.

Implementation

set isMenuOpen(bool isOpen) {
  // Update controller value
  if (widget.controller != null && widget.controller!.isMenuOpen != isOpen) {
    widget.controller!.isMenuOpen = isOpen;
  }

  if (widget.isMenuOpenChanged != null) {
    widget.isMenuOpenChanged!(isOpen);
  }

  if (widget.menu == null || (_isMenuOpen == isOpen && isPanning == false)) {
    return;
  }
  _menuAnimationController.duration = Duration(milliseconds: widget.duration);
  double currentAnimationProcess = getMenuOpenPercent();
  _isMenuOpen = isOpen;

  _menuAnimationController.reset();

  if (isOpen) {
    _menuAnimation = Tween<double>(begin: currentAnimationProcess, end: 1)
        .animate(CurvedAnimation(
      parent: _menuAnimationController,
      curve: Curves.easeOutCubic,
    ));
    _menuAnimationController.forward();
  } else {
    _menuAnimation = Tween<double>(begin: currentAnimationProcess, end: 0)
        .animate(CurvedAnimation(
      parent: _menuAnimationController,
      curve: Curves.easeOutCubic,
    ));
    _menuAnimationController.forward();
  }
}