用于平铺列表视图的 WPF 工具包 [英] WPF toolkit for tile listview
本文介绍了用于平铺列表视图的 WPF 工具包的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要创建格式良好的按钮图块，例如 Windows 8 起始页.是否有任何可用于自定义 ListView 的工具包，它可能支持平铺视图或网格视图，具有一些格式和一些动画选项.
I need to create tiles of well formatted buttons, something like the Windows 8 start page. Is there any toolkit available for a custom ListView which may support tile view or grid view, with some formatting and may be some animation options.
我尝试创建自己的自定义列表视图，但这似乎是一项复杂的任务.
I tried creating my own custom listview but it seemed to be a complicated task.
推荐答案
我不知道一个不错的免费 tile 控件.DevExpress 有一个漂亮的商业版本.
I am not aware of a nice free tile control. DevExpress has a nice looking commercial version.
如果您要具体说明您的确切要求(即您需要配置哪些属性，什么样的动画，...)并且我有时间，我会试一试.
If you'd specify your exact requirements (i.e. what properties do you need configurable, what kind of animation,...) and I find the time, I would give it a whirl though.
我创建了一个带有 WrapPanel 作为 ItemsPanel 的 ItemsControl.使用 MVVM 模式，根据您的需要和数据对象扩展控件应该不会太困难.比较难的是 DragDrop 行为部分——当然还有一些改进的空间.我没有包括图片.
I've created an ItemsControl with a WrapPanel as ItemsPanel. Using the MVVM pattern, expanding the controls to your needs and your data objects should not be too difficult. Rather hard to do is the DragDrop behavior part - there certainly is still some room for improvement. I didn't include the images.
TileControl.xaml:
TileControl.xaml:
<UserControl x:Class="WpfApplication1.TileControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:local="clr-namespace:WpfApplication1"
xmlns:beh="clr-namespace:WpfApplication1.Behavior"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<UserControl.DataContext>
<local:ViewModel />
</UserControl.DataContext>
<UserControl.Resources>
<local:TileTypeToColorConverter x:Key="TileTypeToColorConverter" />
</UserControl.Resources>
<Grid>
<Image Source="/WpfApplication1;component/Themes/background.png" Stretch="UniformToFill" />
<Border x:Name="darkenBorder" Background="Black" Opacity="0.6" />
<ItemsControl ItemsSource="{Binding Tiles}" Background="Transparent" Margin="5">
<i:Interaction.Behaviors>
<beh:ItemsControlDragDropBehavior />
</i:Interaction.Behaviors>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate DataType="local:TileModel">
<Button Content="{Binding Text}" Background="{Binding TileType, Converter={StaticResource TileTypeToColorConverter}}"
Command="{Binding ClickCommand}" Width="120" Height="110" Padding="5" RenderTransformOrigin="0.5, 0.5" >
<Button.RenderTransform>
<TransformGroup>
<ScaleTransform />
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Button.RenderTransform>
<Button.Template>
<ControlTemplate TargetType="Button">
<Border Padding="5" Background="Transparent">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Border x:Name="tileBackground" Grid.RowSpan="2" Background="{TemplateBinding Background}" Opacity="0.9" />
<Image Source="{Binding Image}" HorizontalAlignment="Center" VerticalAlignment="Bottom" Height="50" />
<ContentPresenter TextElement.Foreground="White" Grid.Row="1" HorizontalAlignment="Center" Margin="3,10" />
</Grid>
</Border>
</ControlTemplate>
</Button.Template>
<Button.Resources>
<ElasticEase x:Key="easeOutBounce" EasingMode="EaseOut" Springiness="6" Oscillations="4" />
</Button.Resources>
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard>
<Storyboard Duration="00:00:00.05" AutoReverse="True">
<DoubleAnimation To="0.1" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)"/>
<DoubleAnimation To="0.1" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" From="0.1" To="1.0" EasingFunction="{StaticResource easeOutBounce}" />
<DoubleAnimation Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" From="0.1" To="1.0" EasingFunction="{StaticResource easeOutBounce}" />
<DoubleAnimation Storyboard.TargetProperty="Opacity" From="0.1" To="1.0" EasingFunction="{StaticResource easeOutBounce}" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</UserControl>
ViewModel、TileModel、TileType、ActionCommand:
ViewModel, TileModel, TileType, ActionCommand:
using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Windows.Input;
using System.Windows.Media.Imaging;
namespace WpfApplication1
{
public class ViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
if (this.PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
private ObservableCollection<TileModel> _tiles;
public ObservableCollection<TileModel> Tiles { get { return _tiles; } set { _tiles = value; OnPropertyChanged("Tiles"); } }
public ViewModel()
{
Tiles= new ObservableCollection<TileModel>()
{
new TileModel() { Text = "Facebook", Image = Properties.Resources.Facebook.ToBitmapImage(), TileType = TileType.Website },
new TileModel() { Text = "Skype", Image = Properties.Resources.Skype.ToBitmapImage(), TileType = TileType.Application },
new TileModel() { Text = "Ask.com", Image = Properties.Resources.AskCom.ToBitmapImage(), TileType = TileType.Website },
new TileModel() { Text = "Amazon", Image = Properties.Resources.Amazon.ToBitmapImage(), TileType = TileType.Website },
new TileModel() { Text = "Evernote", Image = Properties.Resources.Evernote.ToBitmapImage(), TileType = TileType.Application },
new TileModel() { Text = "Twitter", Image = Properties.Resources.Twitter.ToBitmapImage(), TileType = TileType.Website },
new TileModel() { Text = "Internet Explorer", Image = Properties.Resources.InterneExplorer.ToBitmapImage(), TileType = TileType.Browser },
new TileModel() { Text = "Android", Image = Properties.Resources.Android.ToBitmapImage(), TileType = TileType.Application },
new TileModel() { Text = "Winamp", Image = Properties.Resources.Winamp.ToBitmapImage(), TileType = TileType.Application },
new TileModel() { Text = "YouTube", Image = Properties.Resources.YouTube.ToBitmapImage(), TileType = TileType.Website },
};
}
}
public class TileModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
if (this.PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
private string _text;
public string Text { get { return _text; } set { _text = value; OnPropertyChanged("Text"); } }
private BitmapSource _image;
public BitmapSource Image { get { return _image; } set { _image = value; OnPropertyChanged("Image"); } }
private TileType _tileType;
public TileType TileType { get { return _tileType; } set { _tileType = value; OnPropertyChanged("TileType"); } }
public ICommand ClickCommand { get; private set; }
public TileModel()
{
ClickCommand = new ActionCommand(Click);
}
private void Click()
{
// execute appropriate action
}
}
public enum TileType
{
Browser,
Website,
Application
}
public class ActionCommand : ICommand
{
public event EventHandler CanExecuteChanged;
private Action _action;
public ActionCommand(Action action)
{
_action = action;
}
public bool CanExecute(object parameter) { return true; }
public void Execute(object parameter)
{
if (_action != null)
_action();
}
}
}
ItemsControlDragDropBehavior:
ItemsControlDragDropBehavior:
using System;
using System.Collections;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Interactivity;
using System.Windows.Media;
namespace WpfApplication1.Behavior
{
public class ItemsControlDragDropBehavior : Behavior<ItemsControl>
{
private bool _isMouseDown;
private bool _isDragging;
private Point _dragStartPosition;
private UIElement _dragItem;
private UIElement _dragContainer;
private IDataObject _dataObject;
private int _currentDropIndex;
private Point _lastCheckPoint;
protected override void OnAttached()
{
this.AssociatedObject.AllowDrop = true;
this.AssociatedObject.PreviewMouseLeftButtonDown += AssociatedObject_PreviewMouseLeftButtonDown;
this.AssociatedObject.PreviewMouseMove += AssociatedObject_PreviewMouseMove;
this.AssociatedObject.PreviewDragOver += AssociatedObject_PreviewDragOver;
this.AssociatedObject.PreviewDrop += AssociatedObject_PreviewDrop;
this.AssociatedObject.PreviewMouseLeftButtonUp += AssociatedObject_PreviewMouseLeftButtonUp;
base.OnAttached();
}
void AssociatedObject_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
ItemsControl itemsControl = (ItemsControl)sender;
Point p = e.GetPosition(itemsControl);
object data = itemsControl.GetDataObjectFromPoint(p);
_dataObject = data != null ? new DataObject(data.GetType(), data) : null;
_dragContainer = itemsControl.GetItemContainerFromPoint(p);
if (_dragContainer != null)
_dragItem = GetItemFromContainer(_dragContainer);
if (data != null)
{
_isMouseDown = true;
_dragStartPosition = p;
}
}
void AssociatedObject_PreviewMouseMove(object sender, MouseEventArgs e)
{
if (_isMouseDown)
{
ItemsControl itemsControl = (ItemsControl)sender;
Point currentPosition = e.GetPosition(itemsControl);
if ((_isDragging == false) && (Math.Abs(currentPosition.X - _dragStartPosition.X) > SystemParameters.MinimumHorizontalDragDistance) ||
(Math.Abs(currentPosition.Y - _dragStartPosition.Y) > SystemParameters.MinimumVerticalDragDistance))
{
DragStarted(e.GetPosition(itemsControl));
}
e.Handled = true;
}
}
void AssociatedObject_PreviewDragOver(object sender, DragEventArgs e)
{
UpdateDropIndex(e.GetPosition(this.AssociatedObject));
}
void AssociatedObject_PreviewDrop(object sender, DragEventArgs e)
{
UpdateDropIndex(e.GetPosition(this.AssociatedObject));
}
void AssociatedObject_PreviewMouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
_isMouseDown = false;
}
private void DragStarted(Point p)
{
if (!_isDragging)
{
_isDragging = true;
if (_dragContainer != null)
_dragContainer.Opacity = 0.3;
_currentDropIndex = FindDropIndex(p);
DragDropEffects e = DragDrop.DoDragDrop(this.AssociatedObject, _dataObject, DragDropEffects.Copy | DragDropEffects.Move);
ResetState();
}
}
private void ResetState()
{
if (_dragContainer != null)
_dragContainer.Opacity = 1.0;
_isMouseDown = false;
_isDragging = false;
_dataObject = null;
_dragItem = null;
_dragContainer = null;
_currentDropIndex = -1;
}
private void UpdateDropIndex(Point p)
{
if ((_lastCheckPoint - p).Length > SystemParameters.MinimumHorizontalDragDistance) // prevent too frequent call
{
int dropIndex = FindDropIndex(p);
if (dropIndex != _currentDropIndex && dropIndex > -1)
{
this.AssociatedObject.RemoveItem(_dataObject);
this.AssociatedObject.AddItem(_dataObject, dropIndex);
_currentDropIndex = dropIndex;
}
_lastCheckPoint = p;
}
}
private int FindDropIndex(Point p)
{
ItemsControl itemsControl = this.AssociatedObject;
UIElement dropTargetContainer = null;
dropTargetContainer = itemsControl.GetItemContainerFromPoint(p);
int index = -1;
if (dropTargetContainer != null)
{
index = itemsControl.ItemContainerGenerator.IndexFromContainer(dropTargetContainer);
if (!IsPointInTopHalf(p))
index = index++; // in second half of item, add after
}
else if (IsPointAfterAllItems(itemsControl, p))
{
// still within itemscontrol, but after all items
index = itemsControl.Items.Count - 1;
}
return index;
}
public bool IsPointInTopHalf(Point p)
{
ItemsControl itemsControl = this.AssociatedObject;
bool isInTopHalf = false;
UIElement selectedItemContainer = itemsControl.GetItemContainerFromPoint(p);
Point relativePosition = Mouse.GetPosition(selectedItemContainer);
if (IsItemControlOrientationHorizontal())
isInTopHalf = relativePosition.X < ((FrameworkElement)selectedItemContainer).ActualWidth / 2;
else
isInTopHalf = relativePosition.Y < ((FrameworkElement)selectedItemContainer).ActualHeight / 2;
return isInTopHalf;
}
private bool IsItemControlOrientationHorizontal()
{
bool isHorizontal = false;
Panel panel = GetItemsPanel();
if (panel is WrapPanel)
isHorizontal = ((WrapPanel)panel).Orientation == Orientation.Horizontal;
else if (panel is StackPanel)
isHorizontal = ((StackPanel)panel).Orientation == Orientation.Horizontal;
return isHorizontal;
}
private UIElement GetItemFromContainer(UIElement container)
{
UIElement item = null;
if (container != null)
item = VisualTreeHelper.GetChild(container, 0) as UIElement;
return item;
}
private Panel GetItemsPanel()
{
ItemsPresenter itemsPresenter = GetVisualChild<ItemsPresenter>(this.AssociatedObject);
Panel itemsPanel = VisualTreeHelper.GetChild(itemsPresenter, 0) as Panel;
return itemsPanel;
}
private static T GetVisualChild<T>(DependencyObject parent) where T : Visual
{
T child = default(T);
int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < numVisuals; i++)
{
Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
child = v as T;
if (child == null)
{
child = GetVisualChild<T>(v);
}
if (child != null)
{
break;
}
}
return child;
}
/// still needs some work
private static bool IsPointAfterAllItems(ItemsControl itemsControl, Point point)
{
bool isAfter = false;
UIElement target = itemsControl.GetLastItemContainer();
Point targetPos = target.TransformToAncestor(itemsControl).Transform(new Point(0, 0));
Point relativeToTarget = new Point(point.X - targetPos.X, point.Y - targetPos.Y);
if (relativeToTarget.X >= 0 && relativeToTarget.Y >= 0)
{
var bounds = VisualTreeHelper.GetDescendantBounds(target);
isAfter = !bounds.Contains(relativeToTarget);
}
return isAfter;
}
}
public static class ItemsControlExtensions
{
public static object GetDataObjectFromPoint(this ItemsControl itemsControl, Point p)
{
UIElement element = itemsControl.InputHitTest(p) as UIElement;
while (element != null)
{
if (element == itemsControl)
return null;
object data = itemsControl.ItemContainerGenerator.ItemFromContainer(element);
if (data != DependencyProperty.UnsetValue)
return data;
else
element = VisualTreeHelper.GetParent(element) as UIElement;
}
return null;
}
public static UIElement GetItemContainerFromPoint(this ItemsControl itemsControl, Point p)
{
UIElement element = itemsControl.InputHitTest(p) as UIElement;
while (element != null)
{
object data = itemsControl.ItemContainerGenerator.ItemFromContainer(element);
if (data != DependencyProperty.UnsetValue)
return element;
else
element = VisualTreeHelper.GetParent(element) as UIElement;
}
return element;
}
public static UIElement GetLastItemContainer(this ItemsControl itemsControl)
{
UIElement container = null;
if (itemsControl.HasItems)
container = itemsControl.GetItemContainerAtIndex(itemsControl.Items.Count - 1);
return container;
}
public static UIElement GetItemContainerAtIndex(this ItemsControl itemsControl, int index)
{
UIElement container = null;
if (itemsControl != null && itemsControl.Items.Count > index && itemsControl.ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated)
container = itemsControl.ItemContainerGenerator.ContainerFromIndex(index) as UIElement;
else
container = itemsControl;
return container;
}
public static void AddItem(this ItemsControl itemsControl, IDataObject item, int insertIndex)
{
if (itemsControl.ItemsSource != null)
{
foreach (string format in item.GetFormats())
{
object data = item.GetData(format);
IList iList = itemsControl.ItemsSource as IList;
if (iList != null)
iList.Insert(insertIndex, data);
else
{
Type type = itemsControl.ItemsSource.GetType();
Type genericList = type.GetInterface("IList`1");
if (genericList != null)
type.GetMethod("Insert").Invoke(itemsControl.ItemsSource, new object[] { insertIndex, data });
}
}
}
else
itemsControl.Items.Insert(insertIndex, item);
}
public static void RemoveItem(this ItemsControl itemsControl, IDataObject itemToRemove)
{
if (itemToRemove != null)
{
foreach (string format in itemToRemove.GetFormats())
{
object data = itemToRemove.GetData(format);
int index = itemsControl.Items.IndexOf(data);
if (index > -1)
itemsControl.RemoveItemAt(index);
}
}
}
public static void RemoveItemAt(this ItemsControl itemsControl, int removeIndex)
{
if (removeIndex != -1 && removeIndex < itemsControl.Items.Count)
{
if (itemsControl.ItemsSource != null)
{
IList iList = itemsControl.ItemsSource as IList;
if (iList != null)
{
iList.RemoveAt(removeIndex);
}
else
{
Type type = itemsControl.ItemsSource.GetType();
Type genericList = type.GetInterface("IList`1");
if (genericList != null)
type.GetMethod("RemoveAt").Invoke(itemsControl.ItemsSource, new object[] { removeIndex });
}
}
else
itemsControl.Items.RemoveAt(removeIndex);
}
}
}
}
TileTypeToColorConverter:
TileTypeToColorConverter:
public class TileTypeToColorConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
SolidColorBrush brush = new SolidColorBrush();
TileType type = (TileType)value;
switch (type)
{
case TileType.Browser: brush.Color = Colors.Maroon; break;
case TileType.Application: brush.Color = Colors.DodgerBlue; break;
case TileType.Website: brush.Color = Colors.DarkGoldenrod; break;
}
return brush;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
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