C# Silverlight - 放大水平列表框图像项目

发布于 2024-08-06 04:19:33 字数 1046 浏览 4 评论 0原文

我有以下列表框，它绑定到图像 URL 的数据库表。当应用程序运行时，可以单击每个单独的图像，并看到图像上出现一个浅蓝色选择框（您可以在单击时知道每个单独的图像何时被选择）。我希望能够做的是在单击每个图像时执行缩放。有谁知道我可以通过修改下面我当前使用的代码来做到这一点！？（这样做的原因是我需要在水平列表框中显示图像，这就是这段代码的作用。）

<ListBox x:Name="list1"  HorizontalAlignment="Left" RenderTransformOrigin="0.5,0.5"  Width="400"  d:LayoutOverrides="HorizontalAlignment">
                            <ListBox.ItemsPanel>
                                <ItemsPanelTemplate>
                                    <StackPanel Orientation="Horizontal"/>
                                </ItemsPanelTemplate>
                            </ListBox.ItemsPanel>
                            <ListBox.ItemTemplate>
                                <DataTemplate >
                                    <Image Width="100" Height="100" Stretch="Fill"  Source="{Binding LowResUrl}"/>
                                </DataTemplate>
                            </ListBox.ItemTemplate>
                        </ListBox>

原文

I have the following listbox below which binds to a database table of image URL's. When the application is running, it is possible to click on each individual image, and witness a light blue selection box appear on the image (you can tell when each individual image is selected as its clicked). What I would like to be able to do is perform a zoom upon clicking each image. Does anyone know of a way in which I could do this by amending the code I am currently using below!? (The reason for this is that I need to display the images in a horizontal listbox, which is what this code does.)

<ListBox x:Name="list1"  HorizontalAlignment="Left" RenderTransformOrigin="0.5,0.5"  Width="400"  d:LayoutOverrides="HorizontalAlignment">
                            <ListBox.ItemsPanel>
                                <ItemsPanelTemplate>
                                    <StackPanel Orientation="Horizontal"/>
                                </ItemsPanelTemplate>
                            </ListBox.ItemsPanel>
                            <ListBox.ItemTemplate>
                                <DataTemplate >
                                    <Image Width="100" Height="100" Stretch="Fill"  Source="{Binding LowResUrl}"/>
                                </DataTemplate>
                            </ListBox.ItemTemplate>
                        </ListBox>

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べ映画 2024-08-13 04:19:33

您可以使用当前正在使用的此代码片段 ItemTemplate 还有一个模板 generatedItemContainer(ItemContainerStyle)

 <Style x:Key="ListBoxItemStyleContainerWide" TargetType="ListBoxItem">
    <Setter Property="Padding" Value="3"/>
    <Setter Property="HorizontalContentAlignment" Value="Left"/>
    <Setter Property="VerticalContentAlignment" Value="Top"/>
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="TabNavigation" Value="Local"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ListBoxItem">
                <Grid x:Name="grid" Background="{TemplateBinding Background}" RenderTransformOrigin="0.5,0.5">
                    <Grid.RenderTransform>
                        <TransformGroup>
                            <ScaleTransform/>
                            <SkewTransform/>
                            <RotateTransform/>
                            <TranslateTransform/>
                        </TransformGroup>
                    </Grid.RenderTransform>
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition GeneratedDuration="00:00:00.2000000" To="MouseOver">
                                    <Storyboard>
                                        <DoubleAnimation BeginTime="00:00:00" Duration="00:00:00.2000000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(UIElement.Opacity)" From="0" To="1"/>
                                        <ColorAnimation BeginTime="00:00:00" Duration="00:00:00.2000000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)" To="#FFF6BD43"/>
                                        <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="grid" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
                                            <EasingDoubleKeyFrame KeyTime="00:00:00.2000000" Value="2"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="grid" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
                                            <EasingDoubleKeyFrame KeyTime="00:00:00.2000000" Value="2"/>
                                        </DoubleAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualTransition>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="Normal">
                                <Storyboard>
                                    <ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)">
                                        <EasingColorKeyFrame KeyTime="00:00:00" Value="#00F6BD43"/>
                                    </ColorAnimationUsingKeyFrames>
                                    <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(UIElement.Opacity)">
                                        <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="MouseOver">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="fillColor" Storyboard.TargetProperty="Opacity">
                                        <SplineDoubleKeyFrame KeyTime="0" Value="1"/>
                                    </DoubleAnimationUsingKeyFrames>
                                    <ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)">
                                        <EasingColorKeyFrame KeyTime="00:00:00" Value="#FFF6BD43"/>
                                    </ColorAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Disabled">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="contentPresenter" Storyboard.TargetProperty="Opacity">
                                        <SplineDoubleKeyFrame KeyTime="0" Value=".55"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="SelectionStates">
                            <VisualState x:Name="Unselected"/>
                            <VisualState x:Name="Selected">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="fillColor2" Storyboard.TargetProperty="Opacity">
                                        <SplineDoubleKeyFrame KeyTime="0" Value=".75"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="FocusStates">
                            <VisualState x:Name="Focused">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="FocusVisualElement" Storyboard.TargetProperty="Visibility">
                                        <DiscreteObjectKeyFrame KeyTime="0">
                                            <DiscreteObjectKeyFrame.Value>
                                                <Visibility>Visible</Visibility>
                                            </DiscreteObjectKeyFrame.Value>
                                        </DiscreteObjectKeyFrame>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Unfocused"/>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Rectangle x:Name="fillColor" RadiusX="10" RadiusY="10" IsHitTestVisible="False" Width="950" Height="74" Stroke="Black" StrokeThickness="3"/>
                    <Rectangle x:Name="fillColor2" Fill="#FFEEDEA7" RadiusX="5" RadiusY="5" IsHitTestVisible="False" Opacity="0"/>
                    <ContentPresenter x:Name="contentPresenter" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/>
                    <Rectangle x:Name="FocusVisualElement" StrokeThickness="1" RadiusX="10" RadiusY="10" Visibility="Collapsed"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

You can use this snippet you are currently using ItemTemplate there is one more template GeneratedItemContainer(ItemContainerStyle)

 <Style x:Key="ListBoxItemStyleContainerWide" TargetType="ListBoxItem">
    <Setter Property="Padding" Value="3"/>
    <Setter Property="HorizontalContentAlignment" Value="Left"/>
    <Setter Property="VerticalContentAlignment" Value="Top"/>
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="TabNavigation" Value="Local"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ListBoxItem">
                <Grid x:Name="grid" Background="{TemplateBinding Background}" RenderTransformOrigin="0.5,0.5">
                    <Grid.RenderTransform>
                        <TransformGroup>
                            <ScaleTransform/>
                            <SkewTransform/>
                            <RotateTransform/>
                            <TranslateTransform/>
                        </TransformGroup>
                    </Grid.RenderTransform>
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition GeneratedDuration="00:00:00.2000000" To="MouseOver">
                                    <Storyboard>
                                        <DoubleAnimation BeginTime="00:00:00" Duration="00:00:00.2000000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(UIElement.Opacity)" From="0" To="1"/>
                                        <ColorAnimation BeginTime="00:00:00" Duration="00:00:00.2000000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)" To="#FFF6BD43"/>
                                        <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="grid" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
                                            <EasingDoubleKeyFrame KeyTime="00:00:00.2000000" Value="2"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="grid" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
                                            <EasingDoubleKeyFrame KeyTime="00:00:00.2000000" Value="2"/>
                                        </DoubleAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualTransition>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="Normal">
                                <Storyboard>
                                    <ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)">
                                        <EasingColorKeyFrame KeyTime="00:00:00" Value="#00F6BD43"/>
                                    </ColorAnimationUsingKeyFrames>
                                    <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(UIElement.Opacity)">
                                        <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="MouseOver">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="fillColor" Storyboard.TargetProperty="Opacity">
                                        <SplineDoubleKeyFrame KeyTime="0" Value="1"/>
                                    </DoubleAnimationUsingKeyFrames>
                                    <ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)">
                                        <EasingColorKeyFrame KeyTime="00:00:00" Value="#FFF6BD43"/>
                                    </ColorAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Disabled">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="contentPresenter" Storyboard.TargetProperty="Opacity">
                                        <SplineDoubleKeyFrame KeyTime="0" Value=".55"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="SelectionStates">
                            <VisualState x:Name="Unselected"/>
                            <VisualState x:Name="Selected">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="fillColor2" Storyboard.TargetProperty="Opacity">
                                        <SplineDoubleKeyFrame KeyTime="0" Value=".75"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="FocusStates">
                            <VisualState x:Name="Focused">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="FocusVisualElement" Storyboard.TargetProperty="Visibility">
                                        <DiscreteObjectKeyFrame KeyTime="0">
                                            <DiscreteObjectKeyFrame.Value>
                                                <Visibility>Visible</Visibility>
                                            </DiscreteObjectKeyFrame.Value>
                                        </DiscreteObjectKeyFrame>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Unfocused"/>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Rectangle x:Name="fillColor" RadiusX="10" RadiusY="10" IsHitTestVisible="False" Width="950" Height="74" Stroke="Black" StrokeThickness="3"/>
                    <Rectangle x:Name="fillColor2" Fill="#FFEEDEA7" RadiusX="5" RadiusY="5" IsHitTestVisible="False" Opacity="0"/>
                    <ContentPresenter x:Name="contentPresenter" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/>
                    <Rectangle x:Name="FocusVisualElement" StrokeThickness="1" RadiusX="10" RadiusY="10" Visibility="Collapsed"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

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夏至、离别 2024-08-13 04:19:33

您可以通过重写 ControlTemplate 来访问 ListBoxItem 控件的 VisualStateManager。在 Expression Blend 中选择 ListBoxItem 并“编辑模板的副本”。这将复制旧的 ListBoxItem 控件的样式和控件模板，为您提供一个很好的起点来修改此 ListBox 控件设置要处理的关键事件上发生的情况。

完成此操作后，您可以在视觉状态管理器中对各种事件（悬停、选择、禁用等）应用动画。

如果您正在对 ItemsSource 属性进行数据绑定，并且没有文字 ListBoxItems 来生成 ListBoxItem 样式，只需创建一个新的 ListBox 并向其添加一个 ListBoxItem 即可从中生成 Style+ControlTemplate。生成样式后，您可以通过在数据绑定 ListBox 控件的 ItemContainerStyle 属性上指定新创建的资源来更改漂亮的数据绑定 ListBox 项的控件模板。

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