XAML para Rotar, Imagen Redonda, con Centro Transparente

Question

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.

Answer 1

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>

Answer 2

¿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

Answer 3

@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>