控件模板故事板色动画问题 [英] ControlTemplate Storyboard color animation problem

问题描述

我有一个彩色动画的一个问题。这是我的源：

I have a problem with color animation. This is my source:

 <Window.Resources>
    <hedit:BrushToColorConverter x:Key="BrushToColorConverter" />
    <Style x:Key="MyButtonStyle" TargetType="Button">
        <Setter Property="OverridesDefaultStyle" Value="True"/>
        <Setter Property="Margin" Value="5"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <ControlTemplate.Resources>
                        <Storyboard x:Key="buttonAnimIn">
                            <!-- Problem line -->
                            <ColorAnimation Storyboard.TargetName="bntBack" Storyboard.TargetProperty="Color" To="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}, Converter={StaticResource BrushToColorConverter}}" />
                        </Storyboard>
                        <Storyboard x:Key="buttonAnimOut">
                            <ColorAnimation Storyboard.TargetName="bntBack" Storyboard.TargetProperty="Color" To="Blue" />
                        </Storyboard>
                        <Storyboard x:Key="buttonAnimForegroundIn">
                            <ColorAnimation Storyboard.TargetName="btnFore" Storyboard.TargetProperty="Color" To="Blue" />
                        </Storyboard>
                        <Storyboard x:Key="buttonAnimForegroundOut">
                            <ColorAnimation Storyboard.TargetName="btnFore" Storyboard.TargetProperty="Color" To="Red" />
                        </Storyboard>
                    </ControlTemplate.Resources>
                    <Border Name="border" 
                        BorderThickness="1"
                        Padding="4,2" 
                        BorderBrush="DarkGray" 
                        CornerRadius="3">
                        <Border.Background>
                            <SolidColorBrush Color="Blue" x:Name="bntBack" />
                        </Border.Background>
                        <ContentControl HorizontalAlignment="Center" VerticalAlignment="Center" Content="{TemplateBinding Content}">
                            <ContentControl.Foreground>
                                <SolidColorBrush Color="Red" x:Name="btnFore" />
                            </ContentControl.Foreground>
                        </ContentControl >
                    </Border>
                    <ControlTemplate.Triggers>
                        <EventTrigger RoutedEvent="Button.MouseEnter">
                            <BeginStoryboard Storyboard="{StaticResource buttonAnimIn}" />
                            <BeginStoryboard Storyboard="{StaticResource buttonAnimForegroundIn}" />
                        </EventTrigger>
                        <EventTrigger RoutedEvent="Button.MouseLeave">
                            <BeginStoryboard Storyboard="{StaticResource buttonAnimOut}" />
                            <BeginStoryboard Storyboard="{StaticResource buttonAnimForegroundOut}" />
                        </EventTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

现在的问题是：

The problem is:

不能在属性'风格'的值转换为类型的对象System.Windows.Style。不能冻结这个故事板时间表树跨线程使用。在对象System.Windows.Controls.Button标记文件HLSLEditor;组件/ mainwindow.xaml错误。线223位置25

Cannot convert the value in attribute 'Style' to object of type 'System.Windows.Style'. Cannot freeze this Storyboard timeline tree for use across threads. Error at object 'System.Windows.Controls.Button' in markup file 'HLSLEditor;component/mainwindow.xaml' Line 223 Position 25.

在使用固定的颜色，它的工作，但它不能与父母的前景色工作...

When using fixed colors it worked, but it cannot work with the Foreground color of the parent...

我怎么做一个动画的前景或背景颜色？

How do I do an animation to the foreground or background color?

谢谢！

推荐答案

您不能冻结绑定，你可能可以解决这个问题，通过声明一种颜色作为一个资源，然后同时在动画使用的StaticResource你控制的背景绑定到它

You cannot freeze Bindings, you probably can get around this issue by declaring a color as a resource and then bind your Control's Background to it while using StaticResource in the animation.

例如。

<Window.Background>
    <SolidColorBrush Color="{DynamicResource Background}"/>
</Window.Background>
<Window.Resources>
    <Color x:Key="Background">Green</Color>
</Window.Resources>

<ColorAnimation Storyboard.TargetProperty="Foreground.Color"
                Duration="0:0:1"
                To="{StaticResource Background}"/>

使用资源类另类：

Alternative using a resource class:

public static class MyColors
{
    public static Color MyHighlightColor = Color.FromArgb(255, 0, 88, 0);
}

<ColorAnimation Storyboard.TargetProperty="Foreground.Color"
                Duration="0:0:1"
                To="{x:Static local:MyColors.MyHighlightColor}"/>

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