XAML para Rotar, Imagen Redonda, con Centro Transparente
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03-07-2019 - |
Pregunta
Estoy buscando xaml que pueda representar un ícono de carga, como lo hace Vista.
Descripción visual:
- Redondo (alrededor de 1/3 de pulgada de ancho)
- color azul claro
- centro transparente
- botón de gel mirando (bordes redondeados con una pequeña sombra)
- hilandero blanco alrededor del borde, para dar el movimiento
luz (er) sky blue / gel pack buscando
Encontré rectángulos giratorios y podemos crear XAML que da la ilusión de girar, pero solo estamos dibujando 12 partes de un reloj y animando cada una de ellas individualmente.
Solución
Aquí hay un spinner super simple que creé en SL y que puedes convertir a WPF.
<UserControl x:Class="Spinner.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="400" Height="300">
<UserControl.Resources>
<Storyboard x:Name="Animiation" RepeatBehavior="Forever">
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0" Duration="0:0:.25" Storyboard.TargetName="e1" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.125" Duration="0:0:.25" Storyboard.TargetName="e2" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.25" Duration="0:0:.25" Storyboard.TargetName="e3" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.375" Duration="0:0:.25" Storyboard.TargetName="e4" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.5" Duration="0:0:.25" Storyboard.TargetName="e5" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.625" Duration="0:0:.25" Storyboard.TargetName="e6" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.75" Duration="0:0:.25" Storyboard.TargetName="e7" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.825" Duration="0:0:.25" Storyboard.TargetName="e8" Storyboard.TargetProperty="Opacity"/>
</Storyboard>
</UserControl.Resources>
<Grid x:Name="LayoutRoot" Background="White">
<Grid Width="100" Height="100" x:Name="gridSpinner">
<Ellipse x:Name="e1" Margin="40,80,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e2" Margin="12,68,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e3" Margin="0,40,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e4" Margin="12,12,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e5" Margin="40,0,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e6" Margin="68,12,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e7" Margin="80,40,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e8" Margin="68,68,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
</Grid>
</Grid>
</UserControl>
Otros consejos
¿Es absolutamente necesario que esté lleno de XAML? Para este tipo de efectos, los PNG transparentes funcionan muy bien. Simplemente apile los PNG en una cuadrícula y anime algunos de ellos usando RotateTransform y DoubleAnimation.
Si tu aplicación no tiene que ampliar mucho, esa será la forma más fácil de hacer el truco.
Saludos, Laurent
@Joeln, gracias. Pude convertir esto a WPF y obtuve lo que necesitaba, gracias.
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Page.Triggers>
<EventTrigger RoutedEvent="Page.Loaded">
<BeginStoryboard Name="beginThis">
<Storyboard x:Name="Animiation" RepeatBehavior="Forever">
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0" Duration="0:0:.25" Storyboard.TargetName="e1" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.125" Duration="0:0:.25" Storyboard.TargetName="e2" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.25" Duration="0:0:.25" Storyboard.TargetName="e3" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.375" Duration="0:0:.25" Storyboard.TargetName="e4" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.5" Duration="0:0:.25" Storyboard.TargetName="e5" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.625" Duration="0:0:.25" Storyboard.TargetName="e6" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.75" Duration="0:0:.25" Storyboard.TargetName="e7" Storyboard.TargetProperty="Opacity"/>
<DoubleAnimation To=".5" AutoReverse="True" BeginTime="0:0:0.825" Duration="0:0:.25" Storyboard.TargetName="e8" Storyboard.TargetProperty="Opacity"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Page.Triggers>
<Grid x:Name="LayoutRoot" Background="White">
<Grid Width="100" Height="100" x:Name="gridSpinner">
<Ellipse x:Name="e1" Margin="40,80,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e2" Margin="12,68,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e3" Margin="0,40,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e4" Margin="12,12,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e5" Margin="40,0,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e6" Margin="68,12,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e7" Margin="80,40,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
<Ellipse x:Name="e8" Margin="68,68,0,0" Height="20" Width="20" Fill="Gray" Stretch="Fill" VerticalAlignment="Top" HorizontalAlignment="Left"/>
</Grid>
</Grid>
</Page>