C# 向我解释以下VS2010扩展示例代码
程序员们，我正在构建一个VS2010扩展，我正在围绕VS2010 SDK附带的一些示例进行实验 其中一个示例项目称为TextAdorment。在该项目中，有一个古怪的类，如下所示：C# 向我解释以下VS2010扩展示例代码,c#,visual-studio-2010,C#,Visual Studio 2010,程序员们，我正在构建一个VS2010扩展，我正在围绕VS2010 SDK附带的一些示例进行实验 其中一个示例项目称为TextAdorment。在该项目中，有一个古怪的类，如下所示： [Export(typeof(IWpfTextViewCreationListener))] [ContentType("text")] [TextViewRole(PredefinedTextViewRoles.Document)] internal sealed class TextAdornment1Facto
[Export(typeof(IWpfTextViewCreationListener))]
[ContentType("text")]
[TextViewRole(PredefinedTextViewRoles.Document)]
internal sealed class TextAdornment1Factory : IWpfTextViewCreationListener
using System.ComponentModel.Composition;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Utilities;
namespace TextAdornment1
{
#region Adornment Factory
/// <summary>
/// Establishes an <see cref="IAdornmentLayer"/> to place the adornment on and exports the <see cref="IWpfTextViewCreationListener"/>
/// that instantiates the adornment on the event of a <see cref="IWpfTextView"/>'s creation
/// </summary>
[Export(typeof(IWpfTextViewCreationListener))]
[ContentType("text")]
[TextViewRole(PredefinedTextViewRoles.Document)]
internal sealed class TextAdornment1Factory : IWpfTextViewCreationListener
{
/// <summary>
/// Defines the adornment layer for the adornment. This layer is ordered
/// after the selection layer in the Z-order
/// </summary>
[Export(typeof(AdornmentLayerDefinition))]
[Name("TextAdornment1")]
[Order(After = PredefinedAdornmentLayers.Selection, Before = PredefinedAdornmentLayers.Text)]
[TextViewRole(PredefinedTextViewRoles.Document)]
public AdornmentLayerDefinition editorAdornmentLayer = null;
/// <summary>
/// Instantiates a TextAdornment1 manager when a textView is created.
/// </summary>
/// <param name="textView">The <see cref="IWpfTextView"/> upon which the adornment should be placed</param>
public void TextViewCreated(IWpfTextView textView)
{
new TextAdornment1(textView);
}
}
#endregion //Adornment Factory
}
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Text.Formatting;
namespace TextAdornment1
{
///<summary>
///TextAdornment1 places red boxes behind all the "A"s in the editor window
///</summary>
public class TextAdornment1
{
IAdornmentLayer _layer;
IWpfTextView _view;
Brush _brush;
Pen _pen;
ITextView textView;
public TextAdornment1(IWpfTextView view)
{
_view = view;
_layer = view.GetAdornmentLayer("TextAdornment1");
textView = view;
//Listen to any event that changes the layout (text changes, scrolling, etc)
_view.LayoutChanged += OnLayoutChanged;
_view.Closed += new System.EventHandler(_view_Closed);
//selectedText();
//Create the pen and brush to color the box behind the a's
Brush brush = new SolidColorBrush(Color.FromArgb(0x20, 0x00, 0x00, 0xff));
brush.Freeze();
Brush penBrush = new SolidColorBrush(Colors.Red);
penBrush.Freeze();
Pen pen = new Pen(penBrush, 0.5);
pen.Freeze();
_brush = brush;
_pen = pen;
}
void _view_Closed(object sender, System.EventArgs e)
{
MessageBox.Show(textView.Selection.IsEmpty.ToString());
}
/// <summary>
/// On layout change add the adornment to any reformatted lines
/// </summary>
private void OnLayoutChanged(object sender, TextViewLayoutChangedEventArgs e)
{
foreach (ITextViewLine line in e.NewOrReformattedLines)
{
this.CreateVisuals(line);
}
}
private void selectedText()
{
}
/// <summary>
/// Within the given line add the scarlet box behind the a
/// </summary>
private void CreateVisuals(ITextViewLine line)
{
//grab a reference to the lines in the current TextView
IWpfTextViewLineCollection textViewLines = _view.TextViewLines;
int start = line.Start;
int end = line.End;
//Loop through each character, and place a box around any a
for (int i = start; (i < end); ++i)
{
if (_view.TextSnapshot[i] == 'a')
{
SnapshotSpan span = new SnapshotSpan(_view.TextSnapshot, Span.FromBounds(i, i + 1));
Geometry g = textViewLines.GetMarkerGeometry(span);
if (g != null)
{
GeometryDrawing drawing = new GeometryDrawing(_brush, _pen, g);
drawing.Freeze();
DrawingImage drawingImage = new DrawingImage(drawing);
drawingImage.Freeze();
Image image = new Image();
image.Source = drawingImage;
//Align the image with the top of the bounds of the text geometry
Canvas.SetLeft(image, g.Bounds.Left);
Canvas.SetTop(image, g.Bounds.Top);
_layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, null, image, null);
}
}
}
}
}
}
使用System.ComponentModel.Composition；
使用Microsoft.VisualStudio.Text.Editor；
使用Microsoft.VisualStudio.Utilities；
命名空间TextAdorment1
{
#区域装饰厂
///
///建立一个用于放置装饰并导出
///在a的创建事件上实例化装饰的
///
[导出（类型（IWPTextViewCreationListener））]
[内容类型（“文本”）]
[TextViewRole（预定义的textViewRoles.Document）]
内部密封类TextAdorment1Factory:IWPTextViewCreationListener
{
///
///定义装饰的装饰层。此层是有序的
///在Z顺序的选择层之后
///
[导出（类型（装饰层定义））]
[名称（“文本装饰1”）]
[顺序（在=预定义的AdormentLayers.Selection之后，在=预定义的AdormentLayers.Text之前）]
[TextViewRole（预定义的textViewRoles.Document）]
公共装饰层定义编辑器ADORNMENTLAYER=null；
///
///创建textView时实例化TextAdorment1管理器。
///
///装饰物应该放在上面的地方
已创建公共无效文本视图（IWPTextView文本视图）
{
新的文本装饰1（文本视图）；
}
}
#endregion/装饰厂
}
using System.ComponentModel.Composition;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Utilities;
namespace TextAdornment1
{
#region Adornment Factory
/// <summary>
/// Establishes an <see cref="IAdornmentLayer"/> to place the adornment on and exports the <see cref="IWpfTextViewCreationListener"/>
/// that instantiates the adornment on the event of a <see cref="IWpfTextView"/>'s creation
/// </summary>
[Export(typeof(IWpfTextViewCreationListener))]
[ContentType("text")]
[TextViewRole(PredefinedTextViewRoles.Document)]
internal sealed class TextAdornment1Factory : IWpfTextViewCreationListener
{
/// <summary>
/// Defines the adornment layer for the adornment. This layer is ordered
/// after the selection layer in the Z-order
/// </summary>
[Export(typeof(AdornmentLayerDefinition))]
[Name("TextAdornment1")]
[Order(After = PredefinedAdornmentLayers.Selection, Before = PredefinedAdornmentLayers.Text)]
[TextViewRole(PredefinedTextViewRoles.Document)]
public AdornmentLayerDefinition editorAdornmentLayer = null;
/// <summary>
/// Instantiates a TextAdornment1 manager when a textView is created.
/// </summary>
/// <param name="textView">The <see cref="IWpfTextView"/> upon which the adornment should be placed</param>
public void TextViewCreated(IWpfTextView textView)
{
new TextAdornment1(textView);
}
}
#endregion //Adornment Factory
}
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Text.Formatting;
namespace TextAdornment1
{
///<summary>
///TextAdornment1 places red boxes behind all the "A"s in the editor window
///</summary>
public class TextAdornment1
{
IAdornmentLayer _layer;
IWpfTextView _view;
Brush _brush;
Pen _pen;
ITextView textView;
public TextAdornment1(IWpfTextView view)
{
_view = view;
_layer = view.GetAdornmentLayer("TextAdornment1");
textView = view;
//Listen to any event that changes the layout (text changes, scrolling, etc)
_view.LayoutChanged += OnLayoutChanged;
_view.Closed += new System.EventHandler(_view_Closed);
//selectedText();
//Create the pen and brush to color the box behind the a's
Brush brush = new SolidColorBrush(Color.FromArgb(0x20, 0x00, 0x00, 0xff));
brush.Freeze();
Brush penBrush = new SolidColorBrush(Colors.Red);
penBrush.Freeze();
Pen pen = new Pen(penBrush, 0.5);
pen.Freeze();
_brush = brush;
_pen = pen;
}
void _view_Closed(object sender, System.EventArgs e)
{
MessageBox.Show(textView.Selection.IsEmpty.ToString());
}
/// <summary>
/// On layout change add the adornment to any reformatted lines
/// </summary>
private void OnLayoutChanged(object sender, TextViewLayoutChangedEventArgs e)
{
foreach (ITextViewLine line in e.NewOrReformattedLines)
{
this.CreateVisuals(line);
}
}
private void selectedText()
{
}
/// <summary>
/// Within the given line add the scarlet box behind the a
/// </summary>
private void CreateVisuals(ITextViewLine line)
{
//grab a reference to the lines in the current TextView
IWpfTextViewLineCollection textViewLines = _view.TextViewLines;
int start = line.Start;
int end = line.End;
//Loop through each character, and place a box around any a
for (int i = start; (i < end); ++i)
{
if (_view.TextSnapshot[i] == 'a')
{
SnapshotSpan span = new SnapshotSpan(_view.TextSnapshot, Span.FromBounds(i, i + 1));
Geometry g = textViewLines.GetMarkerGeometry(span);
if (g != null)
{
GeometryDrawing drawing = new GeometryDrawing(_brush, _pen, g);
drawing.Freeze();
DrawingImage drawingImage = new DrawingImage(drawing);
drawingImage.Freeze();
Image image = new Image();
image.Source = drawingImage;
//Align the image with the top of the bounds of the text geometry
Canvas.SetLeft(image, g.Bounds.Left);
Canvas.SetTop(image, g.Bounds.Top);
_layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, null, image, null);
}
}
}
}
}
}
使用System.Windows；
使用System.Windows.Controls；
使用System.Windows.Media；
使用Microsoft.VisualStudio.Text；
使用Microsoft.VisualStudio.Text.Editor；
使用Microsoft.VisualStudio.Text.Formatting；
命名空间TextAdorment1
{
///
///TextAdorment1将红色框放在编辑器窗口中所有“A”的后面
///
公共类TextAdorment1
{
IAdornmentLayer\u层；
IWpfTextView\u视图；
刷子；
钢笔；
ITextView文本视图；
公共文本装饰1（IWPTextView视图）
{
_视图=视图；
_layer=view.getAdormentLayer（“TextAdorment1”）；
textView=视图；
//收听任何改变布局的事件（文本更改、滚动等）
_view.LayoutChanged+=仅布局更改；
_view.Closed+=新的System.EventHandler（\u view\u Closed）；
//selectedText（）；
//创建钢笔和画笔，为a后面的方框上色
笔刷=新的SolidColorBrush（Color.FromArgb（0x20，0x00，0x00，0xff））；
刷子。冻结（）；
画笔画笔=新的SolidColorBrush（Colors.Red）；
冻结；
钢笔=新钢笔（钢笔刷，0.5）；
笔。冻结（）；
_刷子=刷子；
_笔=笔；
}
void\u view\u Closed（对象发送方，System.EventArgs e）
{
Show（textView.Selection.IsEmpty.ToString（））；
}
///
///布局更改时，将装饰添加到任何重新格式化的线
///
private void OnLayoutChanged（对象发送者，TextViewLayoutChangedEventArgs e）
{
foreach（e.new中的ITextViewLine或ReformatedLines）
{
这个.CreateVisuals（行）；
}
}
私有void selectedText（）
{
}
///
///在给定的行中，在a后面添加红色框
///
专用void CreateVisuals（ITextViewLine）
{
//获取对当前文本视图中的行的引用
IWPTextViewLineCollection textViewLines=_view.textViewLines；
int start=line.start；
int end=line.end；
//循环遍历每个字符，并在任意字符周围放置一个框
for（int i=开始；（i<结束）；+i）
{
如果（_view.TextSnapshot[i]=='a'）
{
快照span=新快照span（_view.TextSnapshot，span.FromBounds（i，i+1））；
几何g=文本视图线。GetMarkerGeometry（span）；
如果（g！=null）
{
几何绘图=新几何绘图（_画笔，_画笔，g）；
绘图。冻结（）；
DrawingImage DrawingImage=新的DrawingImage（图纸）；
drawingImage.Freeze（）；
图像=新图像（）；
image.Source=drawingImage；
//将图像与文本几何体边界的顶部对齐
SetLeft（图像，g.Bounds.Left）；
Canvas.SetTop（图像，g.Bounds.Top）；
_layer.AddAdorment（AdormentPositionBehavior.TextRelative，span，null，image，null）；
}
}
}
}
}
}
TextViewCreated（IWPTextView textview）