SketchFlow / 使用 TabControl 中的(选定的)TabItem 来触发状态

发布于 2024-10-16 14:07:42 字数 5805 浏览 9 评论 0原文

语境: 一个新的 Sketchflow / Silverlight 项目。 Expression Blend 4(终极)

我有以下代码。 我有一个带有 2 个 TabItem 的 TabControl。 我还有 2 个“标注”(大气泡的东西)作为状态变化的快速视觉效果。

我创建了一个 VisualStateGroup 并添加到其下的 States。 当我从 NAVIGATE 窗口手动调用这些时(运行项目后),状态按预期工作。 callout1 和 callout2 会改变它们的不透明度(在 100% 和 10% 之间)。 所以我对国家及其运作方式有了基本的了解。

但是,当我向 TabItem 添加触发事件时,触发器看起来不错,但不起作用。 下面是一个简单的例子。

我试过 事件名称=“鼠标左键按下” 和 事件名称=“点击” 没有运气。

我还注释掉了 ObjectAnimationUsingKeyFrames 标签,但也没有运气。

有人看到我错过了什么吗?

基本上,我无法获取(选择)TabItem 来触发状态更改。

谢谢。

-----------开始XAML代码

<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" 
xmlns:data="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" 
xmlns:System="clr-namespace:System;assembly=mscorlib" 
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
xmlns:pi="http://schemas.microsoft.com/prototyping/2010/interactivity"
xmlns:ed="http://schemas.microsoft.com/expression/2010/drawing"
    x:Class="MyProject.MyScreen"
    Width="640" Height="480" mc:Ignorable="d">

    <Grid x:Name="LayoutRoot" Background="White">

                <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="VisibleTabs">
                <VisualState x:Name="Tab1VisualState">
                    <Storyboard>
                        <DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout1" d:IsOptimized="True"/>
                        <DoubleAnimation Duration="0" To="0.1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout2" d:IsOptimized="True"/>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(TabControl.SelectedIndex)" Storyboard.TargetName="tabControl">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <System:Int32>0</System:Int32>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>


                    </Storyboard>
                </VisualState>
                <VisualState x:Name="Tab2VisualState">
                    <Storyboard>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(TabControl.SelectedIndex)" Storyboard.TargetName="tabControl">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <System:Int32>1</System:Int32>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>

                        <DoubleAnimation Duration="0" To="0.1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout1" d:IsOptimized="True"/>
                        <DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout2" d:IsOptimized="True"/>


                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>


        <data:TabControl x:Name="tabControl" Height="150" Margin="41,0,215,50" VerticalAlignment="Bottom" SelectedIndex="0">
            <data:TabItem Header="Tab Number One" Height="24" VerticalAlignment="Bottom">
                <i:Interaction.Triggers>
                    <i:EventTrigger EventName="MouseLeftButtonDown">
                        <pi:ActivateStateAction TargetState="Tab1VisualState"/>
                    </i:EventTrigger>
                </i:Interaction.Triggers>

            </data:TabItem>
            <data:TabItem Header="Tab Number Two">
                <i:Interaction.Triggers>
                    <i:EventTrigger EventName="MouseLeftButtonDown">
                        <pi:ActivateStateAction TargetState="Tab2VisualState"/>
                    </i:EventTrigger>
                </i:Interaction.Triggers>

            </data:TabItem>
        </data:TabControl>

        <ed:Callout x:Name="callout1" AnchorPoint="0,1.25" CalloutStyle="Oval" Content="Tab1 Rocks" Foreground="{StaticResource BaseForeground-Sketch}" Fill="{StaticResource BaseBackground-Sketch}" FontSize="{StaticResource SizeDouble-Sketch}" FontFamily="{StaticResource FontFamily-Sketch}" ed:GeometryEffect.GeometryEffect="Sketch" HorizontalAlignment="Left" Height="100" Margin="0,84,0,0" Stroke="{StaticResource BaseBorder-Sketch}" StrokeThickness="2" VerticalAlignment="Top" Width="200" Opacity="1.0"/>
        <ed:Callout x:Name="callout2" AnchorPoint="0,1.25" CalloutStyle="Oval" Content="Tab2 Rocks" Foreground="{StaticResource BaseForeground-Sketch}" Fill="{StaticResource BaseBackground-Sketch}" FontSize="{StaticResource SizeDouble-Sketch}" FontFamily="{StaticResource FontFamily-Sketch}" ed:GeometryEffect.GeometryEffect="Sketch" HorizontalAlignment="Left" Height="100" Margin="200,84,0,0" Stroke="{StaticResource BaseBorder-Sketch}" StrokeThickness="2" VerticalAlignment="Top" Width="200" Opacity="0.1"/>       


    </Grid>
</UserControl>

Context:
A new Sketchflow / Silverlight project.
Expression Blend 4 (Ultimate)

I have the below code.
I have a TabControl with 2 TabItem's.
I also have 2 "callout" (big bubble things) as quick visual on the state change.

I created a VisualStateGroup and added to States under it.
When I manually invoke these from the NAVIGATE window (after I run the project), the states work as expected. callout1 and callout2 flip flop their opacities (between 100% and 10%).
So I have a basic understanding of State's and how they work.

However, when I add a trigger event to the TabItem, the trigger looks good, but does not work.
Below is a stripped example, down to the bare bones.

I tried
EventName="MouseLeftButtonDown"
and
EventName="Click"
with no luck.

I also commented out the ObjectAnimationUsingKeyFrames tags, no luck there as well.

Anybody see what I'm missing?

Basically, I cannot get (selecting) a TabItem to trigger a State change.

Thanks.

-----------START XAML CODE

<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" 
xmlns:data="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" 
xmlns:System="clr-namespace:System;assembly=mscorlib" 
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
xmlns:pi="http://schemas.microsoft.com/prototyping/2010/interactivity"
xmlns:ed="http://schemas.microsoft.com/expression/2010/drawing"
    x:Class="MyProject.MyScreen"
    Width="640" Height="480" mc:Ignorable="d">

    <Grid x:Name="LayoutRoot" Background="White">

                <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="VisibleTabs">
                <VisualState x:Name="Tab1VisualState">
                    <Storyboard>
                        <DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout1" d:IsOptimized="True"/>
                        <DoubleAnimation Duration="0" To="0.1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout2" d:IsOptimized="True"/>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(TabControl.SelectedIndex)" Storyboard.TargetName="tabControl">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <System:Int32>0</System:Int32>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>


                    </Storyboard>
                </VisualState>
                <VisualState x:Name="Tab2VisualState">
                    <Storyboard>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(TabControl.SelectedIndex)" Storyboard.TargetName="tabControl">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <System:Int32>1</System:Int32>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>

                        <DoubleAnimation Duration="0" To="0.1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout1" d:IsOptimized="True"/>
                        <DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="callout2" d:IsOptimized="True"/>


                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>


        <data:TabControl x:Name="tabControl" Height="150" Margin="41,0,215,50" VerticalAlignment="Bottom" SelectedIndex="0">
            <data:TabItem Header="Tab Number One" Height="24" VerticalAlignment="Bottom">
                <i:Interaction.Triggers>
                    <i:EventTrigger EventName="MouseLeftButtonDown">
                        <pi:ActivateStateAction TargetState="Tab1VisualState"/>
                    </i:EventTrigger>
                </i:Interaction.Triggers>

            </data:TabItem>
            <data:TabItem Header="Tab Number Two">
                <i:Interaction.Triggers>
                    <i:EventTrigger EventName="MouseLeftButtonDown">
                        <pi:ActivateStateAction TargetState="Tab2VisualState"/>
                    </i:EventTrigger>
                </i:Interaction.Triggers>

            </data:TabItem>
        </data:TabControl>

        <ed:Callout x:Name="callout1" AnchorPoint="0,1.25" CalloutStyle="Oval" Content="Tab1 Rocks" Foreground="{StaticResource BaseForeground-Sketch}" Fill="{StaticResource BaseBackground-Sketch}" FontSize="{StaticResource SizeDouble-Sketch}" FontFamily="{StaticResource FontFamily-Sketch}" ed:GeometryEffect.GeometryEffect="Sketch" HorizontalAlignment="Left" Height="100" Margin="0,84,0,0" Stroke="{StaticResource BaseBorder-Sketch}" StrokeThickness="2" VerticalAlignment="Top" Width="200" Opacity="1.0"/>
        <ed:Callout x:Name="callout2" AnchorPoint="0,1.25" CalloutStyle="Oval" Content="Tab2 Rocks" Foreground="{StaticResource BaseForeground-Sketch}" Fill="{StaticResource BaseBackground-Sketch}" FontSize="{StaticResource SizeDouble-Sketch}" FontFamily="{StaticResource FontFamily-Sketch}" ed:GeometryEffect.GeometryEffect="Sketch" HorizontalAlignment="Left" Height="100" Margin="200,84,0,0" Stroke="{StaticResource BaseBorder-Sketch}" StrokeThickness="2" VerticalAlignment="Top" Width="200" Opacity="0.1"/>       


    </Grid>
</UserControl>

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评论(2

月亮是我掰弯的 2024-10-23 14:07:42

这是一个简单的触发器,您可以使用它来根据选项卡选择触发操作。将其添加到您的项目中,编译并将行为的触发器设置为此触发器类型的实例。该行为必须附加到 TabControl 本身。然后将触发器的 TabIndex 设置为您要触发操作的索引。触发器侦听 tabcontrol 的选择更改事件并将其与您提供的 TabIndex 值进行匹配。

public class TabSelectedTrigger : TriggerBase<TabControl>
{
    public static readonly DependencyProperty TabIndexProperty = DependencyProperty.Register("TabIndex", typeof (int),
                                                                                             typeof (TabSelectedTrigger),
                                                                                             new PropertyMetadata(-1));
    public int TabIndex
    {
        get { return (int)this.GetValue(TabIndexProperty); }
        set { this.SetValue(TabIndexProperty, value); }
    }


    protected override void OnAttached()
    {
        base.OnAttached();

        this.AssociatedObject.SelectionChanged += AssociatedObject_SelectionChanged;
    }

    void AssociatedObject_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if(this.TabIndex == this.AssociatedObject.SelectedIndex)
        {
            this.InvokeActions(null);
        }
    }

    protected override void OnDetaching()
    {
        base.OnDetaching();
        this.AssociatedObject.SelectionChanged -= AssociatedObject_SelectionChanged;
    }
}

用法示例:

<sdk:TabControl Margin="59,49,67,81">
        <i:Interaction.Triggers>
            <local:TabSelectedTrigger TabIndex="1">
                <ei:GoToStateAction StateName="VisualState1"/>
            </local:TabSelectedTrigger>
            <local:TabSelectedTrigger TabIndex="0">
                <ei:GoToStateAction StateName="VisualState"/>
            </local:TabSelectedTrigger>
        </i:Interaction.Triggers>
        <sdk:TabItem Header="TabItem">
            <Grid Background="#FFE5E5E5"/>
        </sdk:TabItem>
        <sdk:TabItem Header="TabItem">
            <Grid Background="#FFE5E5E5"/>
        </sdk:TabItem>
    </sdk:TabControl>

Here is a simple trigger you can use to trigger actions based on tab selection. Add this to your project, compile, and set the trigger of the behvior to an instance of this trigger type. The behavior has to be attached to the TabControl itself. Then set the TabIndex of the trigger to the index you want to trigger the action. The trigger listens to the selection changed event of the tabcontrol and matches that against the TabIndex value you supply.

public class TabSelectedTrigger : TriggerBase<TabControl>
{
    public static readonly DependencyProperty TabIndexProperty = DependencyProperty.Register("TabIndex", typeof (int),
                                                                                             typeof (TabSelectedTrigger),
                                                                                             new PropertyMetadata(-1));
    public int TabIndex
    {
        get { return (int)this.GetValue(TabIndexProperty); }
        set { this.SetValue(TabIndexProperty, value); }
    }


    protected override void OnAttached()
    {
        base.OnAttached();

        this.AssociatedObject.SelectionChanged += AssociatedObject_SelectionChanged;
    }

    void AssociatedObject_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if(this.TabIndex == this.AssociatedObject.SelectedIndex)
        {
            this.InvokeActions(null);
        }
    }

    protected override void OnDetaching()
    {
        base.OnDetaching();
        this.AssociatedObject.SelectionChanged -= AssociatedObject_SelectionChanged;
    }
}

Example usage:

<sdk:TabControl Margin="59,49,67,81">
        <i:Interaction.Triggers>
            <local:TabSelectedTrigger TabIndex="1">
                <ei:GoToStateAction StateName="VisualState1"/>
            </local:TabSelectedTrigger>
            <local:TabSelectedTrigger TabIndex="0">
                <ei:GoToStateAction StateName="VisualState"/>
            </local:TabSelectedTrigger>
        </i:Interaction.Triggers>
        <sdk:TabItem Header="TabItem">
            <Grid Background="#FFE5E5E5"/>
        </sdk:TabItem>
        <sdk:TabItem Header="TabItem">
            <Grid Background="#FFE5E5E5"/>
        </sdk:TabItem>
    </sdk:TabControl>
灰色世界里的红玫瑰 2024-10-23 14:07:42

一些想法,但没有明确的:

  1. 可能需要告知 stateActions 有关视觉状态的位置(请注意,此代码周围应该有通常的 < />,但代码根本不会显示如果我包括这些)

    pi:ActivateStateAction TargetState="Tab2VisualState" TargetObject="{Binding ElementName=LayoutRoot}"
    
  2. 您可以尝试使用GoToStateAction(我知道这是混合方式而不是sketchflow,但它们非常相似)

  3. 尝试使用 ControlStoryBoardAction 作为触发器,为此您需要命名您的故事板。

如果上述方法都不起作用,这可能有助于缩小问题范围,但从根本上来说,您的代码看起来不错。

A few ideas but nothing definite:

  1. It may be that the stateActions need to be told about the location of the visualstates (note there should be the usual < /> around this code but the code will not show up at all if I include these)

    pi:ActivateStateAction TargetState="Tab2VisualState" TargetObject="{Binding ElementName=LayoutRoot}"
    
  2. you could try a GoToStateAction instead (I know this is the Blend way and not sketchflow but they are very similar)

  3. try a ControlStoryBoardAction as the trigger, for this you will need to name your storyboards.

If none of the above work this may help to narrow down the issue but fundamentally your code looks sound.

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