在Windows 8中SemanticZoom缩放视图支持对GridView和ListView控件的视图效果进行缩放,它提供一个详细信息视图(ZoomedInView)以让用户查看详细信息,另外提供一个缩小索引视图(ZoomedOutView)让用户快速定位想要查看信息的大概范围。
一.想要实现这种效果我们需要使用SemanticZoom控件和CollectionViewSource控件配合使用:
SemanticZoom控件:
- <SemanticZoom.ZoomedOutView>
- <!--此处填充缩小索引视图的GridView,一般情况下绑定Group.Title-->
- </SemanticZoom.ZoomedOutView>
- <SemanticZoom.ZoomedInView>
- <!--此处填充平常普通的GridView,显示详细信息-->
- </SemanticZoom.ZoomedInView>
CollectionViewSource是一个和前台UI控件进行互动的集合源。
Source:源数据绑定属性
IsSourceGrouped:是否允许分组
View:获取当前与 CollectionViewSource 的此实例关联的视图对象
View.CollectionGroups:返回该视图关联的所有集合组。
二.现在通过一个实例来看如何使用SemanticZoom实现缩放视图,本实例接前一篇文章实例。
1.前台设置CollectionViewSource控件
- <Grid.Resources>
- <CollectionViewSourcex:Name="itemcollectSource"IsSourceGrouped="true"ItemsPath="ItemContent"/>
- </Grid.Resources>
2.前台绘制ZoomedInView视图和ZoomedOutView视图GridView
- <SemanticZoomx:Name="semanticZoom"VerticalAlignment="Center">
- <SemanticZoom.ZoomedOutView>
- <GridViewScrollViewer.IsHorizontalScrollChainingEnabled="False">
- <GridView.ItemTemplate>
- <DataTemplate>
- <!--注意此处绑定的是实体集的GroupTitle属性-->
- <TextBlockText="{BindingGroup.GroupTitle}"FontSize="24"/>
- </DataTemplate>
- </GridView.ItemTemplate>
- <GridView.ItemsPanel>
- <ItemsPanelTemplate>
- <WrapGridItemWidth="150"ItemHeight="75"MaximumRowsOrColumns="1"VerticalChildrenAlignment="Center"/>
- </ItemsPanelTemplate>
- </GridView.ItemsPanel>
- <GridView.ItemContainerStyle>
- <StyleTargetType="GridViewItem">
- <SetterPRoperty="Margin"Value="4"/>
- <SetterProperty="Padding"Value="10"/>
- <SetterProperty="BorderBrush"Value="Gray"/>
- <SetterProperty="BorderThickness"Value="1"/>
- <SetterProperty="HorizontalContentAlignment"Value="Center"/>
- <SetterProperty="VerticalContentAlignment"Value="Center"/>
- </Style>
- </GridView.ItemContainerStyle>
- </GridView>
- </SemanticZoom.ZoomedOutView>
- <SemanticZoom.ZoomedInView>
- <!--设置ScrollViewer.IsHorizontalScrollChainingEnabled="False"-->
- <GridViewName="gv_Item"ItemsSource="{BindingSource={StaticResourceitemcollectSource}}"
- SelectedItem="{BindingItemContent,Mode=TwoWay}"ScrollViewer.IsHorizontalScrollChainingEnabled="False"
- Margin="20,140,40,20"IsSwipeEnabled="True">
- <GridView.ItemTemplate>
- <DataTemplate>
- <GridWidth="250"Height="200"Background="#33CCCCCC">
- <Grid.ColumnDefinitions>
- <ColumnDefinitionWidth="110"></ColumnDefinition>
- <ColumnDefinition></ColumnDefinition>
- </Grid.ColumnDefinitions>
- <ImageGrid.Column="0"Margin="5,0,0,0"Source="{BindingImageUrl}"Stretch="None"></Image>
- <TextBlockGrid.Column="1"Margin="15,15,0,0"Foreground="Black"Text="{BindingtxtTitle}"
- FontWeight="Bold"FontSize="16"TextWrapping="Wrap"/>
- <TextBlockGrid.Column="1"Margin="15,40,0,0"Foreground="Black"Text="{BindingtxtContent}"
- FontWeight="Light"FontSize="14"TextWrapping="Wrap"/>
- </Grid>
- </DataTemplate>
- </GridView.ItemTemplate>
- <GridView.ItemsPanel>
- <ItemsPanelTemplate>
- <VariableSizedWrapGridOrientation="Vertical"MaximumRowsOrColumns="3"/>
- </ItemsPanelTemplate>
- </GridView.ItemsPanel>
- <GridView.GroupStyle>
- <GroupStyle>
- <GroupStyle.HeaderTemplate>
- <DataTemplate>
- <GridMargin="1,0,0,6">
- <ButtonAutomationProperties.Name="组名称"Content="{BindingGroupTitle}"/>
- </Grid>
- </DataTemplate>
- </GroupStyle.HeaderTemplate>
- <GroupStyle.Panel>
- <ItemsPanelTemplate>
- <VariableSizedWrapGridOrientation="Vertical"Margin="0,0,50,0"/>
- </ItemsPanelTemplate>
- </GroupStyle.Panel>
- </GroupStyle>
- </GridView.GroupStyle>
- </GridView>
- </SemanticZoom.ZoomedInView>
- </SemanticZoom>
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