Add snipping tool

3 files changed, 136 insertions, 0 deletions

diff --git a/SnippingTool/SnippingTool.Designer.cs b/SnippingTool/SnippingTool.Designer.cs
new file mode 100644
index 0000000..322a511
--- /dev/null
+++ b/SnippingTool/SnippingTool.Designer.cs
@@ -0,0 +1,38 @@
+namespace SnippingTool;
+
+partial class SnippingTool
+{
+    /// <summary>
+    ///  Required designer variable.
+    /// </summary>
+    private System.ComponentModel.IContainer components = null;
+
+    /// <summary>
+    ///  Clean up any resources being used.
+    /// </summary>
+    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+    protected override void Dispose(bool disposing)
+    {
+        if (disposing && (components != null))
+        {
+            components.Dispose();
+        }
+        base.Dispose(disposing);
+    }
+
+    #region Windows Form Designer generated code
+
+    /// <summary>
+    ///  Required method for Designer support - do not modify
+    ///  the contents of this method with the code editor.
+    /// </summary>
+    private void InitializeComponent()
+    {
+        this.components = new System.ComponentModel.Container();
+        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+        this.ClientSize = new System.Drawing.Size(800, 450);
+        this.Text = "Form1";
+    }
+
+    #endregion
+}
diff --git a/SnippingTool/SnippingTool.cs b/SnippingTool/SnippingTool.cs
new file mode 100644
index 0000000..bd08076
--- /dev/null
+++ b/SnippingTool/SnippingTool.cs
@@ -0,0 +1,86 @@
+namespace SnippingTool;
+
+public partial class SnippingTool : Form
+{
+	public static Image? Snip()
+	{
+		var rc = Screen.PrimaryScreen.Bounds;
+		using Bitmap bmp = new Bitmap(rc.Width, rc.Height, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
+		using Graphics gr = Graphics.FromImage(bmp);
+		gr.CopyFromScreen(0, 0, 0, 0, bmp.Size);
+		using var snipper = new SnippingTool(bmp);
+
+		return snipper.ShowDialog() == DialogResult.OK ? snipper.Image : null;
+	}
+
+	public SnippingTool(Image screenShot)
+	{
+		InitializeComponent();
+		BackgroundImage = screenShot;
+		ShowInTaskbar = false;
+		FormBorderStyle = FormBorderStyle.None;
+		WindowState = FormWindowState.Maximized;
+		DoubleBuffered = true;
+	}
+	public Image? Image { get; set; }
+
+	private Rectangle rcSelect = new Rectangle();
+	private Point pntStart;
+
+	protected override void OnMouseDown(MouseEventArgs e)
+	{
+		if (e.Button != MouseButtons.Left)
+		{
+			return;
+		}
+		pntStart = e.Location;
+		rcSelect = new Rectangle(e.Location, new Size(0, 0));
+		Invalidate();
+	}
+	protected override void OnMouseMove(MouseEventArgs e)
+	{
+		if (e.Button != MouseButtons.Left)
+		{
+			return;
+		}
+		int x1 = Math.Min(e.X, pntStart.X);
+		int y1 = Math.Min(e.Y, pntStart.Y);
+		int x2 = Math.Max(e.X, pntStart.X);
+		int y2 = Math.Max(e.Y, pntStart.Y);
+		rcSelect = new Rectangle(x1, y1, x2 - x1, y2 - y1);
+		Invalidate();
+	}
+	protected override void OnMouseUp(MouseEventArgs e)
+	{
+		if (rcSelect.Width <= 0 || rcSelect.Height <= 0)
+		{
+			return;
+		}
+		Image = new Bitmap(rcSelect.Width, rcSelect.Height);
+		using Graphics gr = Graphics.FromImage(Image);
+		gr.DrawImage(BackgroundImage, new Rectangle(0, 0, Image.Width, Image.Height),
+			rcSelect, GraphicsUnit.Pixel);
+		DialogResult = DialogResult.OK;
+	}
+	protected override void OnPaint(PaintEventArgs e)
+	{
+		using Brush br = new SolidBrush(Color.FromArgb(120, Color.White));
+		int x1 = rcSelect.X; int x2 = rcSelect.X + rcSelect.Width;
+		int y1 = rcSelect.Y; int y2 = rcSelect.Y + rcSelect.Height;
+		e.Graphics.FillRectangle(br, new Rectangle(0, 0, x1, Height));
+		e.Graphics.FillRectangle(br, new Rectangle(x2, 0, Width - x2, Height));
+		e.Graphics.FillRectangle(br, new Rectangle(x1, 0, x2 - x1, y1));
+		e.Graphics.FillRectangle(br, new Rectangle(x1, y2, x2 - x1, Height - y2));
+
+		using Pen pen = new Pen(Color.Red, 3);
+		e.Graphics.DrawRectangle(pen, rcSelect);
+	}
+	protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
+	{
+		if (keyData == Keys.Escape)
+		{
+			DialogResult = DialogResult.Cancel;
+		}
+		return base.ProcessCmdKey(ref msg, keyData);
+	}
+}
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diff --git a/SnippingTool/SnippingTool.csproj b/SnippingTool/SnippingTool.csproj
new file mode 100644
index 0000000..a16e30c
--- /dev/null
+++ b/SnippingTool/SnippingTool.csproj
@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Library</OutputType>
+		<LangVersion>10</LangVersion>
+    <TargetFrameworks>net472;net6.0-windows</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>
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