我正在寻找有关创建WPF UserControl的一些指导。
我的目标是创建一个不同的进度条,来回滑动图像。我希望能够将此用户控件的左右边缘停靠在窗口的两侧,因此,如果用户调整窗口大小,则进度条的宽度也会增加。我不关心高度,这可以是恒定的。
这就是我所拥有的,它的效果非常好,除非我将控件添加到表单中,我无法设置停靠选项,我无法弄清楚如何使故事板动画化以使用用户控件的全宽。
<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="WPFStyle.PGBProgress"
x:Name="MotionProgressBar" Width="550" Margin="5" Height="100" MinWidth="550" MinHeight="100" MaxWidth="550" MaxHeight="100">
<UserControl.Resources>
<Storyboard x:Key="Motion" AutoReverse="True" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="image" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:01" Value="127"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="242"/>
<SplineDoubleKeyFrame KeyTime="00:00:03" Value="342"/>
<SplineDoubleKeyFrame KeyTime="00:00:04" Value="433"/>
<SplineDoubleKeyFrame KeyTime="00:00:07" Value="433"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="image" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:01" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:03" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:04" Value="-2"/>
<SplineDoubleKeyFrame KeyTime="00:00:07" Value="-2"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="image" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:01" Value="89.705"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="179.29"/>
<SplineDoubleKeyFrame KeyTime="00:00:03" Value="270.032"/>
<SplineDoubleKeyFrame KeyTime="00:00:04" Value="362.902"/>
<SplineDoubleKeyFrame KeyTime="00:00:07" Value="717.969"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</UserControl.Resources>
<UserControl.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard Storyboard="{StaticResource Motion}"/>
</EventTrigger>
</UserControl.Triggers>
<Grid x:Name="LayoutRoot">
<Image x:Name="image" HorizontalAlignment="Left" Width="85.622" Source="image.png" Stretch="Fill" VerticalAlignment="Top" RenderTransformOrigin="0.5,0.5" Margin="0,0,0,0">
<Image.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Image.RenderTransform>
</Image>
</Grid>
</UserControl>
答案 0 :(得分:2)
用以下内容替换您的TranslateTransform.X动画:
<DoubleAnimation Storyboard.TargetName="image"
Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)"
From="0"
To="{Binding ElementName=MotionProgressBar, Path=ActualWidth}"
Duration="0:0:7"/>
正如你所看到的,真正的诀窍是绑定;我将To
属性绑定到UserControl的ActualWidth
。相同的概念可以应用于您的其他动画,甚至使用KeyFrames(虽然我发现没有KeyFrames更容易)。
至于“对接”,我认为您正在寻找的是
HorizontalAlignment="Stretch"
这将导致您的控件填满所有宽度。
答案 1 :(得分:2)
Docking无效,因为您将最小/最大尺寸硬编码到控件中。这与对接不太好。这与硬编码动画有关,请参阅@Charlie的回答。
所以,只使用真正需要的大小约束,比如在这种情况下可能是MinHeight和MinWidth,但其余部分保持打开状态。