我的面板尝试执行类似于UniformGrid的操作,除了ItemContainerWidth(40.0)和ItemContainerHeight(20.0)依赖项属性之外,它还有一个ColumnNumber属性。
我希望我的面板能够根据内容进行调整。
我的MesureOverride:
protected override Size MeasureOverride(Size constraint)
{
if (constraint.Width == double.PositiveInfinity || constraint.Height == double.PositiveInfinity)
return Size.Empty;
for (int i = 0; i < InternalChildren.Count; i++)
{
InternalChildren[i].Measure(new Size(ItemContainerWidth, ItemContainerHeight));
}
return constraint;
}
我的ArrangeOverride:
protected override Size ArrangeOverride(Size finalSize)
{
int currentColumn = 0;
int currentRow = 0 ;
for (int i = 0; i < InternalChildren.Count; i++)
{
UIElement child = InternalChildren[i];
if (currentColumn == ColumnCount)
{
currentColumn = 0;
currentRow++;
}
currentColumn++;
double top = currentRow * ItemContainerHeight;
double left = currentColumn * ItemContainerWidth;
child.Arrange(new Rect(left, top, ItemContainerWidth, ItemContainerHeight));
}
return finalSize;
}
我的面板的ActualWidth和Height等于finalSize,我希望面板的大小是从MeasureOvride返回的(约束),
如果我强制这个我的面板在屏幕上的位置不同,我只是希望我的面板大小适合它的内容,如WrapPanel或StackPanel,
使用finalSize
约束大小(100,100)用于测试目的
我对小组的使用:XAML:
<Grid>
<ItemsControl ItemsSource="{Binding Items, Mode=OneWay}" >
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<uni:ScrollableUniformGrid ColumnCount="12" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Black" BorderThickness="0,0,1,1">
<TextBlock Text="{Binding}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
答案 0 :(得分:1)
对不起,我想我第一次误解了你。
看看这个:
<Grid>
<ItemsControl ItemsSource="{Binding}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<local:ScrollableUniformGrid HorizontalAlignment="Left" VerticalAlignment="Top" ColumnCount="3" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Black" BorderThickness="0,0,1,1">
<TextBlock Text="{Binding}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
这就是您的ArrangeOverride的样子。 MeasureOverride可能保持不变。
protected override Size ArrangeOverride(Size finalSize)
{
int currentColumn = 0;
int currentRow = 0;
for (int i = 0; i < InternalChildren.Count; i++)
{
UIElement child = InternalChildren[i];
double top = currentRow * ItemContainerHeight;
double left = currentColumn * ItemContainerWidth;
if (currentColumn == ColumnCount)
{
currentColumn = 0;
currentRow++;
}
else
{
currentColumn++;
}
child.Arrange(new Rect(left, top, ItemContainerWidth, ItemContainerHeight));
}
return new Size((ColumnCount + 1) * ItemContainerWidth, (currentRow + 1) * ItemContainerHeight);
}
看看这张照片。该小组适合我的内容。
答案 1 :(得分:0)
建立appon是什么开发hedgehod说Grid是父母伸展我的面板, 我没有想到这个我认为ItemsControl是设置我的面板边界的那个。
我最终做了以下操作,我在列和行定义中将宽度和高度设置为自动。
XAML:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<ItemsControl ItemsSource="{Binding Items, Mode=OneWay}" Background="AliceBlue">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<uni:ScrollableUniformGrid ColumnCount="12" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Black" BorderThickness="0,0,1,1">
<TextBlock Text="{Binding}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>