正文

WPF Adorner 弹出式工具栏 例子

IP云
IP云V管理员/3 阅读
09/20
提示：扫一扫查出行
【扫一扫了解最新限行尾号】
复制提示

源于MSDN 一个问题。

问:如何做出类似word的文字选中后工具栏弹出和动画效果。

我用的是adorner，其实用popup也是可以的。

效果图：

中间黑色部分代表真正的工具栏。

xaml代码：

<Window x:Class="ADO_TOOL.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ADO_TOOL"
mc:Ignorable="d"
Title="MainWindow" Height="" Width=""> <Grid x:Name="adohost">
<RichTextBox LostKeyboardFocus="RTB_LostKeyboardFocus" VerticalAlignment="Center" x:Name="RTB" PreviewMouseLeftButtonUp="RichTextBox_PreviewMouseLeftButtonUp" >
<FlowDocument >
<Paragraph >
<Run Text="测试显示tool"/>
</Paragraph>
</FlowDocument>
</RichTextBox>
</Grid>
</Window>

adoner代码类

using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Media;namespace ADO_TOOL
{
public class ado_Gird : Adorner
{ private VisualCollection collection; protected override int VisualChildrenCount => collection.Count; protected override Visual GetVisualChild(int index) => collection[index]; protected override Size MeasureOverride(Size constraint) => base.MeasureOverride(constraint); protected override Size ArrangeOverride(Size finalSize)
{ _gird.Arrange(new Rect(finalSize)); var f = host as FrameworkElement; _gird.Margin = new Thickness(left, -top-_gird.Height,,); return base.ArrangeOverride(finalSize); }
private Grid _gird; private UIElement host; private double left;
private double top; public ado_Gird(UIElement adornedElement,double left,double top) :this(adornedElement)
{
this.left= left;
this.top = top;
} //h1是外部grid-内部grid的平均高度
//h2是外部grid-内部grid的平均宽度
readonly int h1 = ,h2=;
public ado_Gird(UIElement adornedElement) : base(adornedElement)
{
collection = new VisualCollection(this);
host = adornedElement;
this._gird = new Grid(); _gird.Height = ; _gird.Width = ; _gird.HorizontalAlignment = HorizontalAlignment.Left; _gird.Background = new SolidColorBrush(Colors.Red); Grid g2 = new Grid(); g2.Height = ; g2.Width = ; g2.Background = new SolidColorBrush(Colors.Black); _gird.Children.Add(g2); _gird.MouseMove += _gird_MouseMove; _gird.MouseLeave += _gird_MouseLeave; _gird.Opacity = 0.5; collection.Add(_gird);
} private void _gird_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e)
{
_gird.Opacity = 0.1;
} private void _gird_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
var point = e.GetPosition(_gird);
var f = host as FrameworkElement;
if (_gird.Width - point.X <= h2)
{
_gird.Opacity = -((h2 -( _gird.Width - point.X)) / h2);
}
if(_gird.Height - point.Y <= h1)
{
_gird.Opacity = - ((h1 - (_gird.Height - point.Y)) / h1);
}
if (point.X>&&point.X<=h2)
{
_gird.Opacity = -((h2 - point.X) / h2);
}
if (point.Y > && point.Y <= h1)
{
_gird.Opacity = - (h1 - point.Y) / h1;
} }
}
}

xaml.cs页面代码:

AdornerLayer layer;
private void RichTextBox_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
var point = e.GetPosition(RTB);
if (layer != null)
{
var b = layer.GetAdorners(adohost);
if(b!=null)
if(b.Count()>)
layer.Remove(b[]);
}
layer = AdornerLayer.GetAdornerLayer(adohost);
var ado = new ado_Gird(adohost, point.X,RTB.ActualHeight);
layer.Add(ado);
} private void RTB_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{ if (layer != null)
{
var b = layer.GetAdorners(adohost);
if (b != null)
if (b.Count() > )
layer.Remove(b[]); ;
}
}