Question

我正在尝试为Windows桌面应用程序设计精美的WPF控件。我想知道是否有可能在WPF控件中公开嵌入式面板。这个想法是创建一个带有标题功能区的面板。将使用一个按钮来部署或隐藏所包含的控件。

这是我的新面板：

<UserControl x:Class="TestRibbonPanel.RibbonPanel.XamlRibbonPanel"
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:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms" 
xmlns:local="clr-namespace:TestRibbonPanel.RibbonPanel"
mc:Ignorable="d" 
d:DesignHeight="150" d:DesignWidth="200" MinHeight="40" x:Name="uc">
<UserControl.Resources>
    <local:BorderHeightConverter x:Key="BhConverter"/>
</UserControl.Resources>
<Grid Background="Transparent">
    <Grid x:Name="grd" Height="20" VerticalAlignment="Top">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="20"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="20"/>
        </Grid.RowDefinitions>
        <Button Grid.Column="0" Grid.Row="0" x:Name="btn" Background="#333333" Click="Btn_Click"/>
        <TextBlock Grid.Column="1" Grid.Row="0" Text="Title" Background="#333333" Foreground="#CCCCCC"/>
    </Grid>
    <Popup x:Name="pu" StaysOpen="True" PlacementTarget="{Binding ElementName=grd}" AllowsTransparency="True" PopupAnimation="Slide" IsOpen="True">
        <Border x:Name="brd" Background="White" CornerRadius="0,0,10,10" BorderThickness="2" BorderBrush="Black" Height="{Binding Path=ActualHeight, ElementName=uc, Converter={StaticResource BhConverter}, FallbackValue=130}" Width="{Binding ActualWidth, ElementName=grd, FallbackValue=200}" SizeChanged="Brd_SizeChanged">
            <WindowsFormsHost>
                <wf:Panel x:Name="pnl" BorderStyle="FixedSingle" BackColor="Red"/>
            </WindowsFormsHost>
        </Border>
    </Popup>
</Grid>

在后面的代码中，我使用System.Windows.Controls.Panel作为名为ContentPanel的属性：

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

namespace TestRibbonPanel.RibbonPanel
{
/// <summary>
/// Logique d'interaction pour XamlRibbonPanel.xaml
/// </summary>
public partial class XamlRibbonPanel : UserControl
{
    public static readonly DependencyProperty IsOPenProperty = DependencyProperty.Register("IsOpen", typeof(bool), typeof(XamlRibbonPanel), new PropertyMetadata(true));
    public bool IsOPen
    {
        get { return (bool)GetValue(IsOPenProperty); }
        set
        {
            SetValue(IsOPenProperty, value);
        }
    }
    public System.Windows.Forms.Panel ContentPanel
    {
        get { return pnl; }
    }

    public XamlRibbonPanel()
    {
        InitializeComponent();
    }
    private void Brd_SizeChanged(object sender, SizeChangedEventArgs e)
    {
        pnl.Size = new System.Drawing.Size((int)brd.ActualWidth, (int)brd.ActualHeight);
    }

    private void Btn_Click(object sender, RoutedEventArgs e)
    {
        pu.IsOpen = !pu.IsOpen;
    }
}

public class BorderHeightConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return (double)value - 20;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
    }
}

现在，我使用名为EH的ElementHost集成类将WPF控件放入Windows窗体包装器中，该类嵌入XamlRibbonPanel控件。

    [DesignerAttribute(typeof(XRibbonPanelDesigner))]
public class XRibbonPanel : UserControl
{
    private System.ComponentModel.IContainer _components = null;
    private System.Windows.Forms.Integration.ElementHost EH;
    private RibbonPanel.XamlRibbonPanel _xp = null;
    private Panel _contentPanel = null;

    public Panel ContentPanel
    {
        get { return _contentPanel; }
    }

    /// <summary>
    /// .ctor
    /// </summary>
    public XRibbonPanel()
    {
        InitializeComponent();
        _contentPanel = xp.ContentPanel;
    }

    private void InitializeComponent()
    {
        this.EH = new System.Windows.Forms.Integration.ElementHost();
        this._xp = new TestRibbonPanel.RibbonPanel.XamlRibbonPanel();
        this.SuspendLayout();
        // 
        // EH
        // 
        this.EH.Dock = System.Windows.Forms.DockStyle.Fill;
        this.EH.Location = new System.Drawing.Point(0, 0);
        this.EH.Name = "EH";
        this.EH.Size = new System.Drawing.Size(150, 150);
        this.EH.TabIndex = 0;
        this.EH.Text = "";
        this.EH.Child = _xp;
        // 
        // XRibbonPanel
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.Controls.Add(this.EH);
        this.Name = "XRibbonPanel";
        this.ResumeLayout(false);
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing && (_components != null))
        {
            _components.Dispose();
        }
        EH.Dispose();
        base.Dispose(disposing);
    }
}

如您所见，我为该控件使用了一个定制设计器，希望将控件公开给设计。这是我在这里已阅读并成功应用于其他“经典”控件的一种技术：

    using System;
using System.ComponentModel;
using System.Windows.Forms.Design;

namespace TestRibbonPanel
{
    public class XRibbonPanelDesigner : ScrollableControlDesigner
    {
        XRibbonPanel _panel;
        public override void Initialize(IComponent component)
        {
            base.Initialize(component);
            _panel = (XRibbonPanel)component;

            if (_panel == null)
                throw new ArgumentException();
            else
            {
                System.Windows.Forms.Panel pnl = _panel.ContentPanel;
                if (pnl != null)
                {
                    bool result = EnableDesignMode(pnl, "Layout");
                }
            }
        }
    }
}

当我将XRibbonPanel放在窗体上时，该面板将按照需要进行操作（打开和关闭面板）。但是不幸的是，我看不到我通常用来放置嵌套控件的“布局”对象。另一个烦人的效果是，当我移动表单时，弹出的Xaml控件浮动在桌面上，与原始表单分离。例如，当我将表单选项卡保持打开状态时，也会在设计模式下发生。

如果我在上设置了断点：

bool result = EnableDesignMode(pnl, "Layout");

在设计器中，pnl不为null，布尔结果为true。

有任何线索吗？

在WPF控件中嵌入Windows窗体面板

0 个答案: