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我在它的 ControlTemplate 中使用了一个我已经塑造它的按钮。我还在 controlTemplate 中添加了一个故事板。故事板更改了我的 controlTemplate 中元素的边界。我从后面的代码中访问它并激活它，问题是当我在手机上执行此操作时会有延迟。我在 MVVM 结构之后构建了我的代码，我的观点是：

 <Button x:Name="Button1" BorderThickness="0" BorderBrush="Transparent">
        <Button.Template>
            <ControlTemplate x:Name="Control">
                <Path x:Name="Control2" Style="{StaticResource style_ColorButton}" Data="{Binding Data}" Fill="{StaticResource Background}">
                    <Path.Resources>
                        <Storyboard x:Name="StoryBoard1">
                            <ColorAnimation Storyboard.TargetName="Control2" Storyboard.TargetProperty="(Stroke).(SolidColorBrush.Color)" To="Blue" Duration="0"/>
                        </Storyboard>
                    </Path.Resources>
                </Path>
            </ControlTemplate> 
        </Button.Template>

还有我激活故事板的 ViewModel 部分：

   foreach (UIElement x in ElementsAtPoint)
        {
            f = x as FrameworkElement;
            if (f is Path)
            {
                try { 
                h = f as Path;
                Storyboard sb = h.Resources["StoryBoard1"] as Storyboard;
                sb.Begin();
                    }
                catch
                {

                }
                break;
            }
        }

我已经读过可以为动画使用依赖对象，但我不确定它是如何工作的，或者它是否会工作，但是任何尝试为动画实现依赖对象的帮助将不胜感激。

4

1 回答 1

4

我会推荐使用 VisualStates 来做你正在寻找的东西。我修改了按钮的样式以将故事添加到 MouseOver VisualState，然后将 MouseEnter 和 MouseLeave 的事件侦听器添加到按钮。当您触摸设备并将手指拖到元素上，然后再次将其拖离时，这些事件将被触发。您可以修改下面的代码以检查是否有东西被拖动。您还可以查看Drag/Drop 功能。

使用以下样式

<Style x:Key="ButtonStyle" TargetType="Button">
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="BorderBrush" Value="{StaticResource PhoneForegroundBrush}"/>
    <Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
    <Setter Property="BorderThickness" Value="{StaticResource PhoneBorderThickness}"/>
    <Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilySemiBold}"/>
    <Setter Property="FontSize" Value="{StaticResource PhoneFontSizeMedium}"/>
    <Setter Property="Padding" Value="10,5,10,6"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <Grid Background="Transparent">
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="Normal"/>
                            <VisualState x:Name="MouseOver">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="White"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="Orange"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Pressed">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneButtonBasePressedForegroundBrush}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneAccentBrush}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Disabled">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="ButtonBackground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Border x:Name="ButtonBackground" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="0" Margin="{StaticResource PhoneTouchTargetOverhang}">
                        <ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    </Border>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

注意它有一个 MouseOver VisualState。然后分配样式并订阅事件处理程序

<Button Content="Drag over me" Style="{StaticResource ButtonStyle}"  MouseEnter="OnButtonMouseEnter" MouseLeave="OnButtonMouseLeave"/>

并在事件处理程序中更改视觉状态。

private void OnButtonMouseEnter(object sender, MouseEventArgs e)
{
    VisualStateManager.GoToState((Control)sender, "MouseOver", true);
}

private void OnButtonMouseLeave(object sender, MouseEventArgs e)
{
    VisualStateManager.GoToState((Control)sender, "Normal", true);
}

有了这个，当您点击并将手指拖动到按钮上时，它将变成橙色并带有白色文本。

于 2014-03-25T21:48:39.613 回答