XAML per immagini rotanti, rotonde, con centro trasparente

Question

Sto cercando xaml che possa rappresentare un'icona di caricamento, come fa Vista.

Descrizione visiva:

• Rotondo (circa 1/3 di pollice di larghezza)
• colore blu più chiaro
• centro trasparente
• aspetto del pulsante gel (bordi arrotondati con una piccola ombra)
• filatore bianco attorno al bordo, per dare il movimento

aspetto azzurro (er) celeste / confezione gel

Ho trovato rettangoli rotanti e possiamo creare XAML che dà l'illusione di girare, ma stiamo solo disegnando 12 parti di un orologio e animandole singolarmente.

Answer 1

Ecco uno spinner super semplice che ho creato in SL che potresti convertire in 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

Deve assolutamente essere full-XAML? Per questo tipo di effetti, i PNG trasparenti funzionano alla grande. Basta impilare i PNG in una griglia e animarne alcuni usando RotateTransform e DoubleAnimation.

Se la tua applicazione non deve ingrandire molto, sarà il modo più semplice per fare il trucco.

Saluti, Laurent

Answer 3

@Joeln, grazie Sono stato in grado di convertire questo in WPF e ottenere ciò di cui avevo bisogno, grazie.

<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>