protected override async void OnAppearingAnimationEnd()
{
if (!IsAnimationEnabled)
{
return;
}
var translateLength = 400u;
await Task.WhenAll(
UsernameEntry.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
UsernameEntry.FadeTo(1),
(new Func <Task>(async() =>
{
await Task.Delay(200);
await Task.WhenAll(
PasswordEntry.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
PasswordEntry.FadeTo(1));
}))());
await Task.WhenAll(
CloseImage.FadeTo(1),
CloseImage.ScaleTo(1, easing: Easing.SpringOut),
CloseImage.RotateTo(0),
LoginButton.ScaleTo(1),
LoginButton.FadeTo(1));
}
protected override async Task OnDisappearingAnimationBeginAsync()
{
var taskSource = new TaskCompletionSource <bool>();
var currentHeight = FrameContainer.Height;
await Task.WhenAll(
UsernameEntry.FadeTo(0),
PasswordEntry.FadeTo(0),
LoginButton.FadeTo(0));
FrameContainer.Animate("HideAnimation", d =>
{
FrameContainer.HeightRequest = d;
},
start: currentHeight,
end: 170,
finished: async(d, b) =>
{
await Task.Delay(300);
taskSource.TrySetResult(true);
});
await taskSource.Task;
}
/// Caso dê algum erro na autenticação, devemos voltar
/// para o estado original das views, assim podemos
/// fazer uma animação de retorno
private async Task OnErrorLoadingAsync()
{
// Caso seu servidor responda muito rápido, pode ser que a
// animação ainda esteja sendo executada, por isso
// utilizamos o TaskCompletationSource para aguardar o término da animaçao de loading
_ = await loadingAnimationTask.Task;
// Voltamos a visibilidade do botao de login
_ = await LoginButton.FadeTo(1, 100);
// Deixaremos novamente o Frame no tamanho/posicão exatos do login
var rectTo = new Rectangle(0, LoginButton.Y, LoginButton.Width, LoginButton.Height);
// Criamos a transiçao do raio do frame + o tamanh/posição (Layout) + a cor defundo
// E aguardamos a execução de todas
_ = await Task.WhenAll(
LoginFrame.CornerRadiusTo(LoginButton.CornerRadius),
LoginFrame.LayoutTo(rectTo, 500, Easing.SpringOut),
LoginFrame.BackgroundColorTo(Color.Transparent, 1000));
// Finalizamos deixando o Frame Invisível
// Pode parecer redundante, pois deixamos o fundo transparente
// Mas parece que o comportamento do `IsVisible` não cooperou pra mim no IOS
// Pode ser um bug na versão atual do Xamarin.Forms, ainda vou investigar mais
LoginFrame.IsVisible = false;
}
private void MakeTransformation(LoginMode loginMode)
{
switch (loginMode)
{
case LoginMode.Initial:
RegisterButton.TranslateTo(0, 0, AnimationSpeed);
RegisterButton.FadeTo(1, AnimationSpeed);
LoginButton.FadeTo(1, AnimationSpeed);
HideControls();
_viewModel.LoginModel.Email = string.Empty;
_viewModel.LoginModel.Password = string.Empty;
break;
case LoginMode.Login:
RegisterButton.FadeTo(0, AnimationSpeed);
ShowControls();
break;
case LoginMode.Register:
RegisterButton.TranslateTo(0, LoginButton.Y - RegisterButton.Y, AnimationSpeed);
LoginButton.FadeTo(0, AnimationSpeed);
ShowControls();
break;
default:
throw new ArgumentOutOfRangeException(nameof(loginMode));
}
}
protected async override Task OnAppearingAnimationEnd()
{
var translateLength = 400u;
await Task.WhenAll(
Nombre.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
Apellido.FadeTo(1));
await Task.WhenAll(
UsernameEntry.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
UsernameEntry.FadeTo(1),
Profesion.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
Profesion.FadeTo(1),
(new Func <Task>(async() =>
{
await Task.Delay(200);
await Task.WhenAll(
PasswordEntry.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
PasswordEntry.FadeTo(1));
}))());
await Task.WhenAll(
LoginButton.ScaleTo(1),
LoginButton.FadeTo(1));
}
//Animation on page load
protected override async void OnAppearing()
{
if (SettingsSaved == "")
{
double scale = this.Scale;
LoginButton.Scale = (scale * 70 / 100);
LoginEntryUsername.Scale = (scale * 70 / 100);
LoginEntryPassword.Scale = (scale * 70 / 100);
//Startup setup
await CinnamonLogo.TranslateTo(0, 170, 500, Easing.Linear);
//await CheckinText.TranslateTo(0, 100, 500, Easing.Linear);
await LoginEntryUsername.TranslateTo(0, 100, 500, Easing.Linear);
await LoginEntryPassword.TranslateTo(0, 100, 500, Easing.Linear);
await LoginButton.TranslateTo(0, 100, 500, Easing.Linear);
//Cinnamon Logo Animation
await Sleep(500);
await CinnamonLogo.TranslateTo(0, 0, 600, Easing.CubicOut);
//Entry and Button Animation
//CheckinText.FadeTo(1, 800, Easing.CubicOut);
//CheckinText.TranslateTo(0, 0, 800, Easing.CubicOut);
LoginEntryUsername.FadeTo(1, 800, Easing.CubicOut);
LoginEntryUsername.TranslateTo(0, 0, 800, Easing.CubicOut);
LoginEntryPassword.FadeTo(1, 800, Easing.CubicOut);
LoginEntryPassword.TranslateTo(0, 0, 800, Easing.CubicOut);
LoginButton.FadeTo(1, 800, Easing.CubicOut);
LoginButton.TranslateTo(0, 0, 800, Easing.CubicOut);
ForgotPasswordButton.FadeTo(1, 800, Easing.CubicOut);
ForgotPasswordButton.TranslateTo(0, 0, 800, Easing.CubicOut);
//NeedHelpButton.FadeTo(1, 800, Easing.CubicOut);
//NeedHelpButton.TranslateTo(0, 0, 800, Easing.CubicOut);
//ContactButton.FadeTo(1, 800, Easing.CubicOut);
//ContactButton.TranslateTo(0, 0, 800, Easing.CubicOut);
TradeMark.IsVisible = true;
//ContactSeperator.IsVisible = true;
Sleep(800);
base.OnAppearing();
}
//Update Availability Indicator
//VersionChecker();
}
private async Task checkLoggedIn()
{
ClientInitializor.username = Xamarin.Essentials.Preferences.Get("username", "null");
ClientInitializor.password = Xamarin.Essentials.Preferences.Get("password", "null");
Device.BeginInvokeOnMainThread(() =>
{
indicator.IsVisible = true;
indicator.IsEnabled = true;
indicator.IsRunning = true;
});
if (ClientInitializor.username != "null")
{
await DataFetcher.AttemptLogIn();
if (DataFetcher.loggedIn)
{
LoggedIn = true;
if (Device.RuntimePlatform == Device.iOS)
{
await Navigation.PopToRootAsync();
}
Device.BeginInvokeOnMainThread(() => {
Application.Current.MainPage = new NavigationPage(new GradesPage());
((NavigationPage)Application.Current.MainPage).BarBackgroundColor = g1;
});
//Application.Current.MainPage = new NavigationPage(new GradesPage());
//await Navigation.PushModalAsync(new GradesPage());
//((NavigationPage)Application.Current.MainPage).BarBackgroundColor = g1;
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
usnHolder.Hint = "Incorrect Username or Password";
usnHolder.FocusedColor = Color.Red;
usnHolder.Focus();
pwd.Text = "";
usn.Text = "";
acceptTOS.IsChecked = false;
LoginButton.IsEnabled = true;
LoginButton.FadeTo(1, 300);
LoginButton.IsVisible = true;
indicator.IsVisible = false;
indicator.IsEnabled = false;
indicator.IsRunning = false;
});
}
}
}
protected override void OnAppearing()
{
base.OnAppearing();
if (String.IsNullOrEmpty(LogoFileImageSource))
{
throw new Exception("You must set the LogoFileImageSource property to specify the logo");
}
logo.Source = LogoFileImageSource;
List <Task> animationTaskList;
if (!isInitialized)
{
Device.BeginInvokeOnMainThread(async() =>
{
await Task.Delay(500);
await logo?.TranslateTo(0, -layout.Height * 0.3 - 10, 250);
await logo?.TranslateTo(0, -layout.Height * 0.3 + 5, 100);
await logo?.TranslateTo(0, -layout.Height * 0.3, 50);
await logo?.TranslateTo(0, -200 + 5, 100);
await logo?.TranslateTo(0, -200, 50);
var logoSloginAnimationTask = logoSlogan?.FadeTo(1, 5);
var newUserSignUpButtonAnimationTask = newUserSignUpButton?.FadeTo(1, 250);
var forgotPasswordButtonAnimationTask = forgotPasswordButton?.FadeTo(1, 250);
var loginEntryAnimationTask = loginEntry?.FadeTo(1, 250);
var passwordEntryAnimationTask = passwordEntry?.FadeTo(1, 250);
var saveUsernameAnimationTask = saveUsername?.FadeTo(1, 250);
var rememberMeAnimationTask = rememberMe?.FadeTo(1, 250);
var loginButtonAnimationTask = loginButton?.FadeTo(1, 249);
animationTaskList = new List <Task>
{
logoSloginAnimationTask,
newUserSignUpButtonAnimationTask,
forgotPasswordButtonAnimationTask,
loginEntryAnimationTask,
passwordEntryAnimationTask,
saveUsernameAnimationTask,
rememberMeAnimationTask,
loginButtonAnimationTask
};
await Task.WhenAll(animationTaskList);
isInitialized = true;
RunAfterAnimation();
});
}
}
public async void Login(object sender, EventArgs e)
{
Firstlight.TranslationY = -20;
Secondlight.TranslationY = -20;
Clock.TranslationY = -20;
View.TranslationY = -20;
LoginButton.TranslationY = -20;
Forget.TranslationY = -20;
Firstlight.Opacity = 0;
Secondlight.Opacity = 0;
Clock.Opacity = 0;
View.Opacity = 0;
LoginButton.Opacity = 0;
Forget.Opacity = 0;
Firstlight.FadeTo(1, 100);
await Firstlight.TranslateTo(0, 0, 300);
Secondlight.FadeTo(1, 100);
await Secondlight.TranslateTo(0, 0, 300);
Clock.FadeTo(1, 100);
await Clock.TranslateTo(0, 0, 300);
View.FadeTo(1, 100);
await View.TranslateTo(0, 0, 300);
LoginButton.FadeTo(1, 100);
await LoginButton.TranslateTo(0, 0, 300);
Forget.FadeTo(1, 100);
await Forget.TranslateTo(0, 0, 300);
//try
//{
// _googleManager.Logout();
// _googleManager.Login(OnLoginComplete);
//}
//catch (Exception x)
//{
// await DisplayAlert("Authentication Failed", "Your Authentication Attempt Failed. Please try again..", "Ok");
//}
}
async void OnLoginAttempt(object sender, EventArgs args)
{
LoginButton.IsEnabled = false;
await LoginButton.FadeTo(0, 300);
LoginButton.IsVisible = false;
indicator.IsVisible = true;
indicator.IsEnabled = true;
indicator.IsRunning = true;
ClientInitializor.username = usn.Text;
ClientInitializor.password = pwd.Text;
await Task.Run(() => DoLogin());
if (!DataFetcher.loggedIn)
{
usnHolder.Hint = "Incorrect Username or Password";
usnHolder.FocusedColor = Color.Red;
usnHolder.Focus();
pwd.Text = "";
usn.Text = "";
acceptTOS.IsChecked = false;
LoginButton.IsEnabled = true;
await LoginButton.FadeTo(1, 300);
LoginButton.IsVisible = true;
indicator.IsVisible = false;
indicator.IsEnabled = false;
indicator.IsRunning = false;
}
else
{
LoggedIn = true;
if (rememberCB.IsChecked.Value)
{
Xamarin.Essentials.Preferences.Set("username", ClientInitializor.username);
Xamarin.Essentials.Preferences.Set("password", ClientInitializor.password);
}
if (Device.RuntimePlatform == Device.iOS)
{
await Navigation.PopToRootAsync();
}
Application.Current.MainPage = new NavigationPage(new GradesPage());
//await Navigation.PushModalAsync(new GradesPage());
((NavigationPage)Application.Current.MainPage).BarBackgroundColor = g1;
}
}
protected override async Task OnAppearingAnimationEndAsync()
{
if (!IsAnimationEnabled)
{
return;
}
var translateLength = 400u;
await Task.WhenAll(
CloseImage.FadeTo(1),
CloseImage.ScaleTo(1, easing: Easing.SpringOut),
CloseImage.RotateTo(0),
LoginButton.ScaleTo(1),
LoginButton.FadeTo(1));
}
protected override async Task OnAppearingAnimationEndAsync()
{
if (!IsAnimationEnabled)
{
return;
}
var translateLength = 400u;
await Task.WhenAll(
UsernameEntry.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
UsernameEntry.FadeTo(1),
(new Func <Task>(async() =>
{
await Task.Delay(150);
await Task.WhenAll(
PasswordEntry.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
PasswordEntry.FadeTo(1)
);
}))(),
(new Func <Task>(async() =>
{
await Task.Delay(300);
await Task.WhenAll(
RememberCheckBox.TranslateTo(0, 0, easing: Easing.SpringOut, length: translateLength),
RememberCheckBox.FadeTo(1)
);
}))()
);
await Task.WhenAll(
//CloseImage.FadeTo(1),
//CloseImage.ScaleTo(1, easing: Easing.SpringOut),
//CloseImage.RotateTo(0),
LoginButton.ScaleTo(1),
LoginButton.FadeTo(1),
RegisterButton.ScaleTo(1),
RegisterButton.FadeTo(1),
OrEntry.ScaleTo(1),
OrEntry.FadeTo(1)
);
LoginButton.IsEnabled = false;
}
private async Task AnimateLoginStart()
{
await Task.Run(() =>
{
LoginEntry.FadeTo(0, 500, Easing.Linear);
PasswordEntry.FadeTo(0, 500, Easing.Linear);
LoginButton.FadeTo(0, 500, Easing.Linear);
});
await LogoImage.TranslateTo(0, 50, 1000, Easing.Linear);
while ((BindingContext as LoginPageViewModel).Busy)
{
await LogoImage.FadeTo(1, 600);
await LogoImage.FadeTo(0, 600);
}
}
protected async override void OnAppearing()
{
base.OnAppearing();
if (String.IsNullOrEmpty(LogoFileImageSource))
{
throw new Exception("You must set the LogoFileImageSource property to specify the logo");
}
logo.Source = LogoFileImageSource;
if (!isInitialized)
{
await Task.Delay(500);
await logo.TranslateTo(0, -layout.Height * 0.3 - 10, 250);
await logo.TranslateTo(0, -layout.Height * 0.3 + 5, 100);
await logo.TranslateTo(0, -layout.Height * 0.3, 50);
await logo.TranslateTo(0, -200 + 5, 100);
await logo.TranslateTo(0, -200, 50);
newUserSignUpButton.FadeTo(1, 250);
forgotPasswordButton.FadeTo(1, 250);
loginEntry.FadeTo(1, 250);
passwordEntry.FadeTo(1, 250);
saveUsername.FadeTo(1, 250);
rememberMe.FadeTo(1, 250);
await loginButton.FadeTo(1, 249);
isInitialized = true;
RunAfterAnimation();
}
}
// Aqui fazemos a animaçao do botao se tornar o ActivityIndicator
private async Task ShowLoadingAsync()
{
// Aqui definimos que a animação de loading vai começar
// e deve ser aguardada antes de iniciar outra animaçao
loadingAnimationTask?.TrySetCanceled();
loadingAnimationTask = new TaskCompletionSource <bool>();
try
{
// Tornamos visivel o frame do login que usa o mesmo tamanho/formato do botão
// Utilizei aqui o Frame, ao inves de manipular diretamente o botão porque achei mais facil
// de alterar sem precisar ocultar texto ou outrar propriedaes do botão
LoginFrame.IsVisible = true;
// Criamos uma animaçao onde o frame vai ficar com a cor de fundo igual a do botao
// e o botão faz um Fade, ficando totalmente transparente, ficando assim
// apenas visivel o frame que contém o ActivityIndicator dentro
_ = await Task.WhenAll(
LoginFrame.BackgroundColorTo(LoginButton.BackgroundColor, 50),
LoginButton.FadeTo(0, 100));
// Calculamos a nova posição do frame, após reduzir a largura dele para 50
var anchorX = (LoginFrame.Width / 2) - (LOADING_WIDTH / 2);
// Criamos então a posição/tamanho final do frame (layout)
var rectTo = new Rectangle(anchorX, LoginFrame.Y, LOADING_WIDTH, LoginFrame.Height);
// Fazemos a transição que vai manipular a posicão/tamanho do frame
_ = await LoginFrame.LayoutTo(rectTo, easing : Easing.SpringOut);
}
finally
{
// Por fim definimos que a animação de loading foi finalizada
loadingAnimationTask.SetResult(true);
}
}