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用Wpf做一个可编程画板(续4-Diagram画板)

作者:opendotnet

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作者:竹天笑

原文标题:用Wpf做一个可编程画板(续4-Diagram画板)

原文链接:https://www.cnblogs.com/akwkevin/p/17367212.html

先上一张效果动图。

用Wpf做一个可编程画板(续4-Diagram画板)

同样老规矩,先上源码地址:https://gitee.com/akwkevin/aistudio.-wpf.-diagram

简单使用,自定义一个text模块的代码如下:

Code = @"using System;
namespace AIStudio.Wpf.CSharpScript
{
 public class Writer
 { 
 public string StringValue{ get; set;} = ""Welcome to AIStudio.Wpf.Diagram"";

 public string Execute()
 {
 return StringValue;
 }
 }
}";
           

是不是很简单。

本次扩展的主要内容

1.可编程模块,使用C#语言。2.控制台打印控件,可以打印程序中的Console.WriteLine数据 3.为了便于大家使用,写了一个Box工厂分配Box的数据流向效果图。

可编程模块的实现原理

使用Microsoft.CodeAnalysis.CSharp.Scripting对代码进行编译,生成Assembly,然后对Assembly反射获得对象,对象内部固定有一个Execute方法,每次扫描的时候执行即可。1.编译使用的Using,必须添加引用集,为了省事,把整个程序的Reference都放入进行编译,获得引用的核心代码如下:

var references = AppDomain.CurrentDomain.GetAssemblies().Where(p => !p.IsDynamic && !string.IsOrEmpty(p.Location)).Select(x => MetadataReference.CreateFromFile(x.Location)).ToList();
//Costura.Fody压缩后,无Location,读取资源文件中的reference
foreach (var assemblyEmbedded in AppDomain.CurrentDomain.GetAssemblies().Where(p => !p.IsDynamic && string.IsOrEmpty(p.Location)))
{
using (var stream = Assembly.GetEntryAssembly().GetManifestResourceStream($"costura.{assemblyEmbedded.GetName().Name.ToLowerInvariant()}.dll.compressed"))
 {
if (stream != )
 {
using (var compressStream = new DeflateStream(stream, CompressionMode.Decompress))
 {
var memStream = new MemoryStream();
 CopyTo(compressStream, memStream);
 memStream.Position = 0;
 references.Add(MetadataReference.CreateFromStream(memStream));
 }

 }
 }
}
           

2.动态编译的代码的核心代码如下:

public static Assembly GenerateAssemblyFromCode(string code, out string message)
{
 Assembly assembly = ;
 message = "";
// 丛代码中转换表达式树
 SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(code);
// 随机程序集名称
string assemblyName = Path.GetRandomFileName();
// 引用

// 创建编译对象
 CSharpCompilation compilation = CSharpCompilation.Create(assemblyName, new[] { syntaxTree }, References, new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));

using (var ms = new MemoryStream())
 {
// 将编译好的IL代码放入内存流
 EmitResult result = compilation.Emit(ms);

// 编译失败,提示
if (!result.Success)
 {
 IEnumerable<Diagnostic> failures = result.Diagnostics.Where(diagnostic =>
 diagnostic.IsWarningAsError ||
 diagnostic.Severity == DiagnosticSeverity.Error).ToList();
foreach (Diagnostic diagnostic in failures)
 {
 message += $"{diagnostic.Id}: {diagnostic.GetMessage()}";
 Console.WriteLine(message);
 }
 }
else
 {
// 编译成功,从内存中加载编译好的程序集
 ms.Seek(0, SeekOrigin.Begin);
 assembly = Assembly.Load(ms.ToArray());
 }
 }
return assembly;
}
           

3.获得编译后的程序集,以及执行。

// 反射获取程序集中 的类
Type type = assembly.GetTypes().FirstOrDefault(p => p.FullName.StartsWith("AIStudio.Wpf")); //assembly.GetType("AIStudio.Wpf.CSharpScript.Write");

// 创建该类的实例
object obj = Activator.CreateInstance(type);

// 通过反射方式调用类中的方法。
var result = type.InvokeMember("Execute",
BindingFlags.Default | BindingFlags.InvokeMethod,
,
 obj,
new object[] { });
           

代码编辑模块的实现

选择AvalonEdit控件,另外为了使用VS2019_Dark的黑色皮肤,引用官方Demo中的HL和TextEditlib实现自定义换肤。

用Wpf做一个可编程画板(续4-Diagram画板)

官方Demo的换肤写的超级复杂,看不懂,但是我们只要理解换肤的核心部分就是动态资源字典,因此我简化下,改进后的核心换肤代码如下:

public class TextEditorThemeHelper
{
static Dictionary<string, ResourceDictionary> ThemeDictionary = new Dictionary<string, ResourceDictionary>();

public static List<string> Themes = new List<string>() { "Dark", "Light", "TrueBlue", "VS2019_Dark" };
public static string CurrentTheme { get; set; }

static TextEditorThemeHelper()
 {
var resource = new ResourceDictionary { Source = new Uri("/TextEditLib;component/Themes/LightBrushs.xaml", UriKind.RelativeOrAbsolute) };
 ThemeDictionary.Add("Light", resource);

 resource = new ResourceDictionary { Source = new Uri("/TextEditLib;component/Themes/DarkBrushs.xaml", UriKind.RelativeOrAbsolute) };
 ThemeDictionary.Add("Dark", resource);

 Application.Current.Resources.MergedDictionaries.Add(resource);
 }

/// <summary>
/// 设置主题
/// </summary>
/// <param name="theme"></param>
public static void SetCurrentTheme(string theme)
 {
 OnAppThemeChanged(theme);//切换到VS2019_Dark
 CurrentTheme = theme;
 }

/// <summary>
/// Invoke this method to apply a change of theme to the content of the document
/// (eg: Adjust the highlighting colors when changing from "Dark" to "Light"
/// WITH current text document loaded.)
/// </summary>
internal static void OnAppThemeChanged(string theme)
 {
 ThemedHighlightingManager.Instance.SetCurrentTheme(theme);

if (ThemeDictionary.ContainsKey(theme))
 {
foreach (var key in ThemeDictionary[theme].Keys)
 {
 ApplyToDynamicResource(key, ThemeDictionary[theme][key]);
 }
 }
// Does this highlighting definition have an associated highlighting theme?
else if (ThemedHighlightingManager.Instance.CurrentTheme.HlTheme != )
 {
// A highlighting theme with GlobalStyles?
// Apply these styles to the resource keys of the editor
foreach (var item in ThemedHighlightingManager.Instance.CurrentTheme.HlTheme.GlobalStyles)
 {
switch (item.TypeName)
 {
case "DefaultStyle":
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorBackground, item.backgroundcolor);
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorForeground, item.foregroundcolor);
break;

case "CurrentLineBackground":
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorCurrentLineBackgroundBrushKey, item.backgroundcolor);
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorCurrentLineBorderBrushKey, item.bordercolor);
break;

case "LineNumbersForeground":
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorLineNumbersForeground, item.foregroundcolor);
break;

case "Selection":
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorSelectionBrush, item.backgroundcolor);
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorSelectionBorder, item.bordercolor);
break;

case "Hyperlink":
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorLinkTextBackgroundBrush, item.backgroundcolor);
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorLinkTextForegroundBrush, item.foregroundcolor);
break;

case "NonPrintableCharacter":
 ApplyToDynamicResource(TextEditLib.Themes.ResourceKeys.EditorNonPrintableCharacterBrush, item.foregroundcolor);
break;

default:
throw new System.ArgumentOutOfRangeException("GlobalStyle named '{0}' is not supported.", item.TypeName);
 }
 }
 }

 }

/// <summary>
/// Re-define an existing <seealso cref="SolidColorBrush"/> and backup the originial color
/// as it was before the application of the custom coloring.
/// </summary>
/// <param name="key"></param>
/// <param name="newColor"></param>
private static void ApplyToDynamicResource(ComponentResourceKey key, Color? newColor)
 {
if (Application.Current.Resources[key] ==  || newColor == )
return;

// Re-coloring works with SolidColorBrushs linked as DynamicResource
if (Application.Current.Resources[key] is SolidColorBrush)
 {
//backupDynResources.Add(resourceName);

var newColorBrush = new SolidColorBrush((Color)newColor);
 newColorBrush.Freeze();

 Application.Current.Resources[key] = newColorBrush;
 }
 }

private static void ApplyToDynamicResource(object key, object newValue)
 {
if (Application.Current.Resources[key] ==  || newValue == )
return;

 Application.Current.Resources[key] = newValue;
 }
}
           

使用方法:

TextEditorThemeHelper.SetCurrentTheme("VS2019_Dark");

或者 TextEditorThemeHelper.SetCurrentTheme("TrueBlue");

或者 TextEditorThemeHelper.SetCurrentTheme("Dark");

或者 TextEditorThemeHelper.SetCurrentTheme("Light");

是不是超级简单。

代码编辑模块的编译与测试。

用Wpf做一个可编程画板(续4-Diagram画板)
用Wpf做一个可编程画板(续4-Diagram画板)

WPF打印控制台数据

控制台打印方法支持切换运行输出方法Console.SetOut,核心代码如下:
public class ConsoleWriter : TextWriter
{
private readonly Action<string> _Write;
private readonly Action<string> _WriteLine;
private readonly Action<string, string, string, int> _WriteCallerInfo;

public ConsoleWriter()
 {

 }

/// <summary>
/// Console 输出重定向
/// </summary>
/// <param name="write">日志方法委托(针对于 Write)</param>
/// <param name="writeLine">日志方法委托(针对于 WriteLine)</param>
public ConsoleWriter(Action<string> write, Action<string> writeLine, Action<string, string, string, int> writeCallerInfo)
 {
 _Write = write;
 _WriteLine = writeLine?? write;
 _WriteCallerInfo = writeCallerInfo;
 }

/// <summary>
/// Console 输出重定向
/// </summary>
/// <param name="write">日志方法委托(针对于 Write)</param>
/// <param name="writeLine">日志方法委托(针对于 WriteLine)</param>
public ConsoleWriter(Action<string> write, Action<string> writeLine)
 {
 _Write = write;
 _WriteLine = writeLine;
 }

/// <summary>
/// Console 输出重定向
/// </summary>
/// <param name="write">日志方法委托</param>
public ConsoleWriter(Action<string> write)
 {
 _Write = write;
 _WriteLine = write;
 }

/// <summary>
/// Console 输出重定向(带调用方信息)
/// </summary>
/// <param name="write">日志方法委托(后三个参数为 CallerFilePath、CallerMemberName、CallerLineNumber)</param>
public ConsoleWriter(Action<string, string, string, int> write)
 {
 _WriteCallerInfo = write;
 }

/// <summary>
/// 使用 UTF-16 避免不必要的编码转换
/// </summary>
public override Encoding Encoding => Encoding.Unicode;

/// <summary>
/// 最低限度需要重写的方法
/// </summary>
/// <param name="value">消息</param>
public override void Write(string value)
 {
if (_WriteCallerInfo != )
 {
 WriteWithCallerInfo(value);
return;
 }

 _Write(value);
 }

/// <summary>
/// 为提高效率直接处理一行的输出
/// </summary>
/// <param name="value">消息</param>
public override void WriteLine(string value)
 {
if (_WriteCallerInfo != )
 {
 WriteWithCallerInfo(value);
return;
 }

 _WriteLine(value);
 }

/// <summary>
/// 带调用方信息进行写消息
/// </summary>
/// <param name="value">消息</param>
private void WriteWithCallerInfo(string value)
 {
//3、System.Console.WriteLine -> 2、System.IO.TextWriter + SyncTextWriter.WriteLine -> 1、DotNet.Utilities.ConsoleHelper.ConsoleWriter.WriteLine -> 0、DotNet.Utilities.ConsoleHelper.ConsoleWriter.WriteWithCallerInfo
var callInfo = ClassHelper.GetMethodInfo(4);
 _WriteCallerInfo(value, callInfo?.FileName, callInfo?.MethodName, callInfo?.LineNumber ?? 0);
 }

public override void Close()
 {
var standardOutput = new StreamWriter(Console.OpenStandardOutput());
 standardOutput.AutoFlush = true;
 Console.SetOut(standardOutput);
base.Close();
 }
}
           

使用:

ConsoleWriter ConsoleWriter = new ConsoleWriter(_write, _writeLine);

Console.SetOut(ConsoleWriter);

动态编译模块的输入输出自动生成。

1.输入输出模块:public string Value{ get; set;} 2.输入模块:public string Value{private get; set;} 3.输出模块:public string Value{get;private set;} 4.与外部交互模块:private string Value{ get; set;} ,必须同名同属性。核心代码如下:

public static Dictionary<string, List<PropertyInfo>> GetPropertyInfo(Type type)
{
 Dictionary<string, List<PropertyInfo>> puts = new Dictionary<string, List<PropertyInfo>>()
 {
 {"Input", new List<PropertyInfo>() },
 {"Output", new List<PropertyInfo>() },
 {"Input_Output", new List<PropertyInfo>() },
 {"Inner", new List<PropertyInfo>() }
 };

try
 {
foreach (System.Reflection.PropertyInfo info in type.GetProperties(BindingFlags.Public | BindingFlags.Instance))
 {
if (info.CanRead && info.CanWrite)
 {
if (info.SetMethod.IsPublic && info.GetMethod.IsPublic)
 {
 puts["Input_Output"].Add(info);
 }
else if (info.SetMethod.IsPublic)
 {
 puts["Input"].Add(info);
 }
else if (info.GetMethod.IsPublic)
 {
 puts["Output"].Add(info);
 }
 }
else if (info.CanRead)
 {
if (info.GetMethod.IsPublic)
 {
 puts["Output"].Add(info);
 }
 }
 }

foreach (System.Reflection.PropertyInfo info in type.GetProperties(BindingFlags.NonPublic | BindingFlags.Instance))
 {
if (info.CanRead)
 {
 puts["Inner"].Add(info);
 }
 }
 }
catch (Exception ex)
 {

 }

return puts;
}
           

最后介绍一下Demo的实现。

1#.Int整数模块,界面定义一个TextBox绑定Int模块的输入管脚。2#.Box产生模块,如果内部数组为空,那么按照输入管脚的数量初始化一个容量为输入整数数量的数组(随机颜色与形状),然后把数据放到输出管脚,当数据被取走后,下一个数据再次放到输出管脚。3#.Bool模块,为false的时候按照颜色进行分配,为true的时候按照形状进行分配。4#.Box分配模块,当输入管脚为空的时候,2#模块的输出可以移动到4#的输入管脚,移动时间为1s,移动完成后,清除2#模块的输出。同时把数据按照颜色或者形状分配到输出,同时把输入管脚清除。按照颜色分配时:(1.如果颜色为红色,那么输出到1号 (2.如果颜色为橙色,那么输出到2号 (3.如果颜色为黄色,那么输出到3号 (4.如果颜色为绿色,那么输出到4号 (5.如果颜色为青色,那么输出到5号 (6.如果颜色为蓝色,那么输出到6号 (7.如果颜色为紫色,那么输出到7号 按照形状分配时:(1.如果形状为圆形,那么输出到1号 (2.如果形状为三角形,那么输出到2号 (3.如果形状为方形,那么输出到3号 (4.如果形状为菱形,那么输出到4号 (5.如果形状为梯形,那么输出到5号 (6.如果形状为五角星,那么输出到6号 (7.如果形状为六边形,那么输出到7号 6#.有两个红色|圆形收集器(7#,8#),按两个容器中的数量比较反馈,均匀分配到这两个收集器中。9#,10#,11#,12#,13#,14#按照管脚取走数据即可。

最后选择C#做脚本编辑,对C#程序员比较省事,但是如果需要给一些非专业编程人员使用,还是用python做脚本编辑比较好,下期是不是做这个呢?

作者:竹天笑

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