├── .gitignore
├── FrigoTab.sln
├── FrigoTab
    ├── ApplicationWindow.cs
    ├── ApplicationWindows.cs
    ├── BackgroundWindow.cs
    ├── BackgroundWindows.cs
    ├── FrigoForm.cs
    ├── FrigoTab.csproj
    ├── KeyHook.cs
    ├── LayerUpdater.cs
    ├── Layout.cs
    ├── LayoutScreen.cs
    ├── Points.cs
    ├── Program.cs
    ├── Program.ico
    ├── Program.svg
    ├── Property.cs
    ├── Rect.cs
    ├── SessionForm.cs
    ├── SysTrayIcon.cs
    ├── Thumbnail.cs
    ├── WindowFinder.cs
    ├── WindowHandle.cs
    ├── WindowIcon.cs
    └── WindowMessages.cs
├── Licence.txt
└── Readme.md


/.gitignore:
--------------------------------------------------------------------------------
1 | .*
2 | bin
3 | obj
4 | packages
5 | 


--------------------------------------------------------------------------------
/FrigoTab.sln:
--------------------------------------------------------------------------------
 1 | 
 2 | Microsoft Visual Studio Solution File, Format Version 12.00
 3 | # Visual Studio 15
 4 | VisualStudioVersion = 15.0.26730.16
 5 | MinimumVisualStudioVersion = 10.0.40219.1
 6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FrigoTab", "FrigoTab\FrigoTab.csproj", "{5C589C6E-BAC4-4E40-A887-348892D1519D}"
 7 | EndProject
 8 | Global
 9 | 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
10 | 		Debug|x64 = Debug|x64
11 | 		Release|x64 = Release|x64
12 | 	EndGlobalSection
13 | 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
14 | 		{5C589C6E-BAC4-4E40-A887-348892D1519D}.Debug|x64.ActiveCfg = Debug|x64
15 | 		{5C589C6E-BAC4-4E40-A887-348892D1519D}.Debug|x64.Build.0 = Debug|x64
16 | 		{5C589C6E-BAC4-4E40-A887-348892D1519D}.Release|x64.ActiveCfg = Release|x64
17 | 		{5C589C6E-BAC4-4E40-A887-348892D1519D}.Release|x64.Build.0 = Release|x64
18 | 	EndGlobalSection
19 | 	GlobalSection(SolutionProperties) = preSolution
20 | 		HideSolutionNode = FALSE
21 | 	EndGlobalSection
22 | 	GlobalSection(ExtensibilityGlobals) = postSolution
23 | 		SolutionGuid = {C6E57E55-ED61-48D3-9634-42707E356D05}
24 | 	EndGlobalSection
25 | EndGlobal
26 | 


--------------------------------------------------------------------------------
/FrigoTab/ApplicationWindow.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Drawing;
  3 | using System.Drawing.Drawing2D;
  4 | using System.Drawing.Text;
  5 | 
  6 | namespace FrigoTab {
  7 | 
  8 |     public class ApplicationWindow : FrigoForm {
  9 | 
 10 |         public readonly WindowHandle Application;
 11 |         public Property<bool> Selected;
 12 |         private readonly int index;
 13 |         private readonly Thumbnail thumbnail;
 14 |         private readonly WindowIcon windowIcon;
 15 |         private readonly LayerUpdater layerUpdater;
 16 | 
 17 |         public ApplicationWindow (FrigoForm owner, WindowHandle application, int index, Rectangle bounds) {
 18 |             Bounds = bounds;
 19 |             Owner = owner;
 20 |             ExStyle |= WindowExStyles.Transparent | WindowExStyles.Layered;
 21 |             Application = application;
 22 |             Selected.Changed += (x, y) => RenderOverlay();
 23 |             this.index = index;
 24 |             thumbnail = new Thumbnail(application, owner.WindowHandle);
 25 |             thumbnail.SetDestinationRect(new Rect(Bounds).ScreenToClient(owner.WindowHandle));
 26 |             layerUpdater = new LayerUpdater(this);
 27 |             windowIcon = new WindowIcon(application);
 28 |             windowIcon.Changed += RenderOverlay;
 29 |             RenderOverlay();
 30 |         }
 31 | 
 32 |         protected override void Dispose (bool disposing) {
 33 |             layerUpdater.Dispose();
 34 |             thumbnail.Dispose();
 35 |             base.Dispose(disposing);
 36 |         }
 37 | 
 38 |         private void RenderOverlay () => layerUpdater.Update(RenderOverlay);
 39 | 
 40 |         private void RenderOverlay (Graphics graphics) {
 41 |             graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
 42 |             graphics.SmoothingMode = SmoothingMode.AntiAlias;
 43 |             RenderFrame(graphics);
 44 |             RenderTitle(graphics);
 45 |             RenderNumber(graphics);
 46 |         }
 47 | 
 48 |         private void RenderFrame (Graphics graphics) {
 49 |             if( Selected.Value ) {
 50 |                 FillRectangle(graphics, graphics.VisibleClipBounds, Color.FromArgb(128, 0, 0, 255));
 51 |             }
 52 |         }
 53 | 
 54 |         private void RenderTitle (Graphics graphics) {
 55 |             const int Pad = 8;
 56 | 
 57 |             Icon icon = windowIcon.Icon;
 58 |             string text = Application.GetWindowText();
 59 | 
 60 |             Font font = new Font("Segoe UI", 11f);
 61 |             SizeF textSize = graphics.MeasureString(text, font);
 62 | 
 63 |             float width = Pad + icon.Width + Pad + textSize.Width + Pad;
 64 |             float height = Pad + Math.Max(icon.Height, textSize.Height) + Pad;
 65 | 
 66 |             RectangleF background = new RectangleF(graphics.VisibleClipBounds.Location, new SizeF(width, height));
 67 |             FillRectangle(graphics, background, Color.Black);
 68 | 
 69 |             {
 70 |                 float x = background.X + Pad;
 71 |                 float y = Center(icon.Size, background).Y;
 72 |                 graphics.DrawIcon(icon, (int) x, (int) y);
 73 |             }
 74 | 
 75 |             using( Brush brush = new SolidBrush(Color.White) ) {
 76 |                 float x = background.X + Pad + icon.Width + Pad;
 77 |                 float y = Center(textSize, background).Y;
 78 |                 graphics.DrawString(text, font, brush, x, y);
 79 |             }
 80 |         }
 81 | 
 82 |         private void RenderNumber (Graphics graphics) {
 83 |             string text = (index + 1).ToString();
 84 | 
 85 |             Font font = new Font("Segoe UI", 72f, FontStyle.Bold);
 86 |             SizeF textSize = graphics.MeasureString(text, font);
 87 | 
 88 |             RectangleF background = Center(textSize, graphics.VisibleClipBounds);
 89 |             FillRectangle(graphics, background, Color.Black);
 90 | 
 91 |             graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
 92 |             using( Brush brush = new SolidBrush(Color.White) ) {
 93 |                 graphics.DrawString(text, font, brush, background);
 94 |             }
 95 |         }
 96 | 
 97 |         private static void FillRectangle (Graphics graphics, RectangleF bounds, Color color) {
 98 |             PointF[] points = new PointF[5];
 99 |             points[0] = new PointF(bounds.Left, bounds.Top);
100 |             points[1] = new PointF(bounds.Left, bounds.Top);
101 |             points[2] = new PointF(bounds.Right, bounds.Top);
102 |             points[3] = new PointF(bounds.Right, bounds.Bottom);
103 |             points[4] = new PointF(bounds.Left, bounds.Bottom);
104 |             using( Brush brush = new SolidBrush(color) ) {
105 |                 graphics.FillPolygon(brush, points);
106 |             }
107 |         }
108 | 
109 |         private static RectangleF Center (SizeF rect, RectangleF bounds) {
110 |             SizeF margins = bounds.Size - rect;
111 |             PointF location = new PointF(bounds.X + margins.Width / 2, bounds.Y + margins.Height / 2);
112 |             return new RectangleF(location, rect);
113 |         }
114 | 
115 |     }
116 | 
117 | }
118 | 


--------------------------------------------------------------------------------
/FrigoTab/ApplicationWindows.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Collections.Generic;
 3 | using System.Drawing;
 4 | using System.Linq;
 5 | 
 6 | namespace FrigoTab {
 7 | 
 8 |     public class ApplicationWindows : IDisposable {
 9 | 
10 |         public Property<ApplicationWindow> Selected;
11 |         public Property<bool> Visible;
12 |         private readonly IList<ApplicationWindow> windows = new List<ApplicationWindow>();
13 | 
14 |         public ApplicationWindows (FrigoForm owner, WindowFinder finder) {
15 |             Selected.Changed += (oldWindow, newWindow) => {
16 |                 if( oldWindow != null ) {
17 |                     oldWindow.Selected.Value = false;
18 |                 }
19 |                 if( newWindow != null ) {
20 |                     newWindow.Selected.Value = true;
21 |                 }
22 |             };
23 |             Visible.Changed += (oldValue, value) => {
24 |                 foreach( ApplicationWindow window in windows ) {
25 |                     window.Visible = value;
26 |                 }
27 |             };
28 |             Layout layout = new Layout(finder.Windows);
29 |             foreach( WindowHandle handle in finder.Windows ) {
30 |                 windows.Add(new ApplicationWindow(owner, handle, windows.Count, layout.Bounds[handle]));
31 |             }
32 |         }
33 | 
34 |         ~ApplicationWindows () => Dispose();
35 | 
36 |         public void Dispose () {
37 |             foreach( ApplicationWindow window in windows ) {
38 |                 window.Close();
39 |             }
40 |             windows.Clear();
41 |         }
42 | 
43 |         public void SelectByIndex (int index) => Selected.Value = index >= 0 && index < windows.Count ? windows[index] : null;
44 |         public void SelectByPoint (Point point) => Selected.Value = windows.FirstOrDefault(window => window.Bounds.Contains(point));
45 | 
46 |     }
47 | 
48 | }
49 | 


--------------------------------------------------------------------------------
/FrigoTab/BackgroundWindow.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | 
 3 | namespace FrigoTab {
 4 | 
 5 |     public class BackgroundWindow : IDisposable {
 6 | 
 7 |         private readonly Thumbnail thumbnail;
 8 |         private bool disposed;
 9 | 
10 |         public BackgroundWindow (FrigoForm owner, WindowHandle window) {
11 |             thumbnail = new Thumbnail(window, owner.WindowHandle);
12 |             thumbnail.SetSourceRect(window.GetRect().ScreenToClient(window));
13 |             thumbnail.SetDestinationRect(window.GetRect().ScreenToClient(owner.WindowHandle));
14 |         }
15 | 
16 |         ~BackgroundWindow () => Dispose();
17 | 
18 |         public void Dispose () {
19 |             if( disposed ) {
20 |                 return;
21 |             }
22 |             thumbnail.Dispose();
23 |             disposed = true;
24 |             GC.SuppressFinalize(this);
25 |         }
26 | 
27 |     }
28 | 
29 | }
30 | 


--------------------------------------------------------------------------------
/FrigoTab/BackgroundWindows.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Collections.Generic;
 3 | using System.Linq;
 4 | 
 5 | namespace FrigoTab {
 6 | 
 7 |     public class BackgroundWindows : IDisposable {
 8 | 
 9 |         private readonly IList<BackgroundWindow> backgrounds = new List<BackgroundWindow>();
10 | 
11 |         public BackgroundWindows (FrigoForm owner, WindowFinder finder) {
12 |             foreach( WindowHandle window in finder.ToolWindows.Reverse() ) {
13 |                 backgrounds.Add(new BackgroundWindow(owner, window));
14 |             }
15 |         }
16 | 
17 |         ~BackgroundWindows () => Dispose();
18 | 
19 |         public void Dispose () {
20 |             foreach( BackgroundWindow window in backgrounds ) {
21 |                 window.Dispose();
22 |             }
23 |             backgrounds.Clear();
24 |         }
25 | 
26 |     }
27 | 
28 | }
29 | 


--------------------------------------------------------------------------------
/FrigoTab/FrigoForm.cs:
--------------------------------------------------------------------------------
 1 | using System.Collections.Generic;
 2 | using System.Diagnostics;
 3 | using System.Linq;
 4 | using System.Windows.Forms;
 5 | 
 6 | namespace FrigoTab {
 7 | 
 8 |     public class FrigoForm : Form {
 9 | 
10 |         public WindowHandle WindowHandle => new WindowHandle(Handle);
11 |         protected WindowExStyles ExStyle = WindowExStyles.ToolWindow;
12 | 
13 |         protected override CreateParams CreateParams {
14 |             get {
15 |                 CreateParams createParams = base.CreateParams;
16 |                 createParams.ExStyle |= (int) ExStyle;
17 |                 createParams.X = Bounds.X;
18 |                 createParams.Y = Bounds.Y;
19 |                 createParams.Width = Bounds.Width;
20 |                 createParams.Height = Bounds.Height;
21 |                 return createParams;
22 |             }
23 |         }
24 | 
25 |         protected FrigoForm () {
26 |             FormBorderStyle = FormBorderStyle.None;
27 |             ShowInTaskbar = false;
28 |             TopMost = true;
29 |             SetStyle(ControlStyles.SupportsTransparentBackColor, false);
30 |             SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
31 |         }
32 | 
33 |         protected override void OnPaint (PaintEventArgs e) {
34 |         }
35 | 
36 |         protected override void OnPaintBackground (PaintEventArgs e) {
37 |         }
38 | 
39 |         protected override void SetVisibleCore (bool value) {
40 |             if( IsHandleCreated ) {
41 |                 base.SetVisibleCore(value);
42 |                 return;
43 |             }
44 |             CreateHandle();
45 |             if( !IsCalledFromRunMessageLoop(new StackTrace()) ) {
46 |                 base.SetVisibleCore(value);
47 |             }
48 |         }
49 | 
50 |         private static bool IsCalledFromRunMessageLoop (StackTrace trace) {
51 |             IEnumerable<string> expected = new[] {"SetVisibleCore", "RunMessageLoopInner", "RunMessageLoop", "Main"};
52 |             IEnumerable<string> actual = trace.GetFrames()?.Select(frame => frame.GetMethod().Name) ?? new string[0];
53 |             return expected.SequenceEqual(actual);
54 |         }
55 | 
56 |     }
57 | 
58 | }
59 | 


--------------------------------------------------------------------------------
/FrigoTab/FrigoTab.csproj:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 3 |   <PropertyGroup>
 4 |     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
 5 |     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
 6 |     <OutputType>WinExe</OutputType>
 7 |     <RootNamespace>FrigoTab</RootNamespace>
 8 |     <AssemblyName>FrigoTab</AssemblyName>
 9 |     <TargetFrameworkVersion>v4.7.1</TargetFrameworkVersion>
10 |     <LangVersion>7.2</LangVersion>
11 |   </PropertyGroup>
12 |   <PropertyGroup>
13 |     <ApplicationIcon>Program.ico</ApplicationIcon>
14 |   </PropertyGroup>
15 |   <ItemGroup>
16 |     <Content Include="Program.ico" />
17 |   </ItemGroup>
18 |   <ItemGroup>
19 |     <Compile Include="**\*.cs" />
20 |   </ItemGroup>
21 |   <ItemGroup>
22 |     <Reference Include="System" />
23 |     <Reference Include="System.Core" />
24 |     <Reference Include="System.Xml.Linq" />
25 |     <Reference Include="System.Data.DataSetExtensions" />
26 |     <Reference Include="Microsoft.CSharp" />
27 |     <Reference Include="System.Data" />
28 |     <Reference Include="System.Deployment" />
29 |     <Reference Include="System.Drawing" />
30 |     <Reference Include="System.Net.Http" />
31 |     <Reference Include="System.Windows.Forms" />
32 |     <Reference Include="System.Xml" />
33 |   </ItemGroup>
34 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
35 |     <DebugSymbols>true</DebugSymbols>
36 |     <OutputPath>bin\Debug\</OutputPath>
37 |     <DefineConstants>DEBUG;TRACE</DefineConstants>
38 |     <DebugType>full</DebugType>
39 |     <PlatformTarget>x64</PlatformTarget>
40 |     <ErrorReport>prompt</ErrorReport>
41 |     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
42 |     <Prefer32Bit>false</Prefer32Bit>
43 |   </PropertyGroup>
44 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
45 |     <OutputPath>bin\Release\</OutputPath>
46 |     <DefineConstants>TRACE</DefineConstants>
47 |     <Optimize>true</Optimize>
48 |     <DebugType>pdbonly</DebugType>
49 |     <PlatformTarget>x64</PlatformTarget>
50 |     <ErrorReport>prompt</ErrorReport>
51 |     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
52 |     <Prefer32Bit>false</Prefer32Bit>
53 |   </PropertyGroup>
54 |   <PropertyGroup>
55 |     <StartupObject>FrigoTab.Program</StartupObject>
56 |   </PropertyGroup>
57 |   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
58 | </Project>


--------------------------------------------------------------------------------
/FrigoTab/KeyHook.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Diagnostics;
  3 | using System.Diagnostics.CodeAnalysis;
  4 | using System.Runtime.InteropServices;
  5 | using System.Windows.Forms;
  6 | 
  7 | #pragma warning disable 169
  8 | #pragma warning disable 649
  9 | 
 10 | namespace FrigoTab {
 11 | 
 12 |     public class KeyHookEventArgs {
 13 | 
 14 |         public readonly Keys Key;
 15 |         public bool Handled;
 16 | 
 17 |         public KeyHookEventArgs (Keys key) => Key = key;
 18 | 
 19 |     }
 20 | 
 21 |     public class KeyHook : IDisposable {
 22 | 
 23 |         public event Action<KeyHookEventArgs> KeyEvent;
 24 | 
 25 |         [SuppressMessage("ReSharper", "PrivateFieldCanBeConvertedToLocalVariable")]
 26 |         private readonly LowLevelKeyProc hookProc;
 27 | 
 28 |         private readonly IntPtr hookId;
 29 |         private bool disposed;
 30 | 
 31 |         public KeyHook () {
 32 |             hookProc = HookProc;
 33 |             using( Process curProcess = Process.GetCurrentProcess() ) {
 34 |                 using( ProcessModule curModule = curProcess.MainModule ) {
 35 |                     hookId = SetWindowsHookEx(13, hookProc, GetModuleHandle(curModule.ModuleName), 0);
 36 |                 }
 37 |             }
 38 |         }
 39 | 
 40 |         ~KeyHook () => Dispose();
 41 | 
 42 |         public void Dispose () {
 43 |             if( disposed ) {
 44 |                 return;
 45 |             }
 46 |             UnhookWindowsHookEx(hookId);
 47 |             disposed = true;
 48 |             GC.SuppressFinalize(this);
 49 |         }
 50 | 
 51 |         private IntPtr HookProc (int nCode, IntPtr wParam, ref LowLevelKeyStruct lParam) {
 52 |             if( HookProcInner(nCode, (WindowMessages) wParam, ref lParam) ) {
 53 |                 return (IntPtr) 1;
 54 |             }
 55 |             return CallNextHookEx(hookId, nCode, wParam, ref lParam);
 56 |         }
 57 | 
 58 |         [SuppressMessage("ReSharper", "UnusedParameter.Local")]
 59 |         private bool HookProcInner (int nCode, WindowMessages wParam, ref LowLevelKeyStruct lParam) {
 60 |             if( nCode < 0 ) {
 61 |                 return false;
 62 |             }
 63 |             if( lParam.Flags.HasFlag(LowLevelKeyFlags.Injected) ) {
 64 |                 return false;
 65 |             }
 66 | 
 67 |             bool alt = lParam.Flags.HasFlag(LowLevelKeyFlags.AltDown);
 68 |             Keys key = alt ? lParam.VkCode | Keys.Alt : lParam.VkCode;
 69 |             KeyHookEventArgs e = new KeyHookEventArgs(key);
 70 |             KeyEvent?.Invoke(e);
 71 |             return e.Handled;
 72 |         }
 73 | 
 74 |         private struct LowLevelKeyStruct {
 75 | 
 76 |             public Keys VkCode;
 77 |             public int ScanCode;
 78 |             public LowLevelKeyFlags Flags;
 79 |             public int Time;
 80 |             public int DwExtraInfo;
 81 | 
 82 |         }
 83 | 
 84 |         [Flags]
 85 |         private enum LowLevelKeyFlags {
 86 | 
 87 |             Injected = 16,
 88 |             AltDown = 32
 89 | 
 90 |         }
 91 | 
 92 |         private delegate IntPtr LowLevelKeyProc (int nCode, IntPtr wParam, ref LowLevelKeyStruct lParam);
 93 | 
 94 |         [DllImport("kernel32.dll")]
 95 |         private static extern IntPtr GetModuleHandle (string lpModuleName);
 96 | 
 97 |         [DllImport("user32.dll")]
 98 |         private static extern IntPtr SetWindowsHookEx (int idHook, LowLevelKeyProc lpfn, IntPtr hMod, int dwThreadId);
 99 | 
100 |         [DllImport("user32.dll")]
101 |         private static extern bool UnhookWindowsHookEx (IntPtr hhk);
102 | 
103 |         [DllImport("user32.dll")]
104 |         private static extern IntPtr CallNextHookEx (IntPtr hhk, int nCode, IntPtr wParam, ref LowLevelKeyStruct lParam);
105 | 
106 |     }
107 | 
108 | }
109 | 


--------------------------------------------------------------------------------
/FrigoTab/LayerUpdater.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Drawing;
  3 | using System.Runtime.InteropServices;
  4 | using System.Windows.Forms;
  5 | 
  6 | #pragma warning disable 414
  7 | 
  8 | namespace FrigoTab {
  9 | 
 10 |     public class LayerUpdater : IDisposable {
 11 | 
 12 |         public delegate void Renderer (Graphics graphics);
 13 | 
 14 |         private readonly Form form;
 15 |         private readonly IntPtr screenDc;
 16 |         private readonly IntPtr memDc;
 17 |         private readonly IntPtr hBitmap;
 18 |         private readonly IntPtr hOldBitmap;
 19 |         private bool disposed;
 20 | 
 21 |         public LayerUpdater (Form form) {
 22 |             this.form = form;
 23 |             screenDc = GetDC(IntPtr.Zero);
 24 |             memDc = CreateCompatibleDC(screenDc);
 25 |             hBitmap = CreateCompatibleBitmap(screenDc, form.Bounds.Width, form.Bounds.Height);
 26 |             hOldBitmap = SelectObject(memDc, hBitmap);
 27 |         }
 28 | 
 29 |         ~LayerUpdater () => Dispose();
 30 | 
 31 |         public void Dispose () {
 32 |             if( disposed ) {
 33 |                 return;
 34 |             }
 35 |             SelectObject(memDc, hOldBitmap);
 36 |             DeleteDC(memDc);
 37 |             DeleteObject(hBitmap);
 38 |             ReleaseDC(IntPtr.Zero, screenDc);
 39 |             disposed = true;
 40 |             GC.SuppressFinalize(this);
 41 |         }
 42 | 
 43 |         public void Update (Renderer renderer) {
 44 |             if( form.IsDisposed ) {
 45 |                 return;
 46 |             }
 47 |             using( Graphics graphics = Graphics.FromHdc(memDc) ) {
 48 |                 graphics.Clear(Color.Empty);
 49 |                 renderer(graphics);
 50 |             }
 51 |             UpdateLayeredWindow();
 52 |         }
 53 | 
 54 |         private void UpdateLayeredWindow () {
 55 |             Point pptDst = form.Bounds.Location;
 56 |             Size pSize = form.Bounds.Size;
 57 |             Point pptSrc = Point.Empty;
 58 |             BlendFunction pblend = new BlendFunction {
 59 |                 BlendOperation = BlendOperation.SourceOver,
 60 |                 BlendFlags = 0,
 61 |                 SourceConstantAlpha = 0xff,
 62 |                 AlphaFormat = AlphaFormat.SourceAlpha
 63 |             };
 64 |             UpdateLayeredWindow(form.Handle, IntPtr.Zero, ref pptDst, ref pSize, memDc, ref pptSrc, 0, ref pblend, UpdateLayeredWindowFlags.Alpha);
 65 |         }
 66 | 
 67 |         private struct BlendFunction {
 68 | 
 69 |             public BlendOperation BlendOperation;
 70 |             public byte BlendFlags;
 71 |             public byte SourceConstantAlpha;
 72 |             public AlphaFormat AlphaFormat;
 73 | 
 74 |         }
 75 | 
 76 |         private enum BlendOperation : byte {
 77 | 
 78 |             SourceOver = 0
 79 | 
 80 |         }
 81 | 
 82 |         private enum AlphaFormat : byte {
 83 | 
 84 |             SourceAlpha = 1
 85 | 
 86 |         }
 87 | 
 88 |         [Flags]
 89 |         private enum UpdateLayeredWindowFlags {
 90 | 
 91 |             Alpha = 2
 92 | 
 93 |         }
 94 | 
 95 |         [DllImport("user32.dll")]
 96 |         private static extern IntPtr GetDC (IntPtr hwnd);
 97 | 
 98 |         [DllImport("gdi32.dll")]
 99 |         private static extern IntPtr CreateCompatibleDC (IntPtr hdc);
100 | 
101 |         [DllImport("gdi32.dll")]
102 |         private static extern IntPtr CreateCompatibleBitmap (IntPtr hdc, int cx, int cy);
103 | 
104 |         [DllImport("gdi32.dll")]
105 |         private static extern IntPtr SelectObject (IntPtr hdc, IntPtr hobj);
106 | 
107 |         [DllImport("gdi32.dll")]
108 |         private static extern bool DeleteDC (IntPtr hdc);
109 | 
110 |         [DllImport("gdi32.dll")]
111 |         private static extern bool DeleteObject (IntPtr hobj);
112 | 
113 |         [DllImport("user32.dll")]
114 |         private static extern int ReleaseDC (IntPtr hwnd, IntPtr hdc);
115 | 
116 |         [DllImport("user32.dll")]
117 |         private static extern bool UpdateLayeredWindow (IntPtr hwnd, IntPtr hdcDst, ref Point pptDst, ref Size psize, IntPtr hdcSrc, ref Point pptSrc,
118 |             int crKey, ref BlendFunction pblend, UpdateLayeredWindowFlags dwFlags);
119 | 
120 |     }
121 | 
122 | }
123 | 


--------------------------------------------------------------------------------
/FrigoTab/Layout.cs:
--------------------------------------------------------------------------------
 1 | using System.Collections.Generic;
 2 | using System.Drawing;
 3 | using System.Linq;
 4 | using System.Windows.Forms;
 5 | 
 6 | namespace FrigoTab {
 7 | 
 8 |     public class Layout {
 9 | 
10 |         public readonly IDictionary<WindowHandle, Rectangle> Bounds = new Dictionary<WindowHandle, Rectangle>();
11 | 
12 |         public Layout (IList<WindowHandle> windows) {
13 |             foreach( Screen screen in Screen.AllScreens ) {
14 |                 LayoutScreen layout = new LayoutScreen(screen, GetWindowsOnScreen(windows, screen));
15 |                 layout.Layout();
16 |                 foreach( WindowHandle window in layout.Bounds.Keys ) {
17 |                     Bounds[window] = layout.Bounds[window];
18 |                 }
19 |             }
20 |         }
21 | 
22 |         private static List<WindowHandle> GetWindowsOnScreen (IEnumerable<WindowHandle> windows, Screen screen) =>
23 |             windows.Where(window => window.GetScreen().Equals(screen)).ToList();
24 | 
25 |     }
26 | 
27 | }
28 | 


--------------------------------------------------------------------------------
/FrigoTab/LayoutScreen.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Collections.Generic;
 3 | using System.Drawing;
 4 | using System.Windows.Forms;
 5 | 
 6 | namespace FrigoTab {
 7 | 
 8 |     public class LayoutScreen {
 9 | 
10 |         public readonly IDictionary<WindowHandle, Rectangle> Bounds;
11 |         private readonly Screen screen;
12 |         private readonly IList<WindowHandle> windows;
13 |         private readonly int columns;
14 |         private readonly int rows;
15 | 
16 |         public LayoutScreen (Screen screen, IList<WindowHandle> windows) {
17 |             Bounds = new Dictionary<WindowHandle, Rectangle>();
18 |             this.screen = screen;
19 |             this.windows = windows;
20 |             columns = (int) Math.Ceiling(Math.Sqrt(windows.Count));
21 |             rows = windows.Count == 0 ? 0 : (int) Math.Ceiling((double) windows.Count / columns);
22 |         }
23 | 
24 |         public void Layout () {
25 |             for( int i = 0; i < windows.Count; i++ ) {
26 |                 float xMargin = screen.Bounds.Width * 0.005f;
27 |                 float yMargin = screen.Bounds.Height * 0.005f;
28 |                 RectangleF cell = GetCellBounds(i % columns, i / columns, xMargin, yMargin);
29 |                 RectangleF bounds = CenterWithin(windows[i].GetRect().Size(), cell);
30 |                 bounds.Offset(screen.WorkingArea.Location);
31 |                 Bounds[windows[i]] = Rectangle.Round(bounds);
32 |             }
33 |         }
34 | 
35 |         private RectangleF GetCellBounds (int column, int row, float xMargin, float yMargin) {
36 |             SizeF size = new SizeF((float) screen.WorkingArea.Width / columns, (float) screen.WorkingArea.Height / rows);
37 |             PointF location = new PointF(column * size.Width + xMargin, row * size.Height + yMargin);
38 |             return new RectangleF(location, new SizeF(size.Width - 2 * xMargin, size.Height - 2 * yMargin));
39 |         }
40 | 
41 |         private static RectangleF CenterWithin (Size rectSize, RectangleF bounds) {
42 |             SizeF size = ScaleWithin(rectSize, bounds.Size);
43 |             SizeF margin = bounds.Size - size;
44 |             PointF location = new PointF(bounds.X + margin.Width / 2, bounds.Y + margin.Height / 2);
45 |             return new RectangleF(location, size);
46 |         }
47 | 
48 |         private static SizeF ScaleWithin (SizeF size, SizeF bounds) {
49 |             size = Scale(size, Math.Min(bounds.Width, size.Width) / size.Width);
50 |             size = Scale(size, Math.Min(bounds.Height, size.Height) / size.Height);
51 |             return size;
52 |         }
53 | 
54 |         private static SizeF Scale (SizeF size, float scale) => new SizeF(size.Width * scale, size.Height * scale);
55 | 
56 |     }
57 | 
58 | }
59 | 


--------------------------------------------------------------------------------
/FrigoTab/Points.cs:
--------------------------------------------------------------------------------
 1 | using System.Drawing;
 2 | using System.Runtime.InteropServices;
 3 | 
 4 | namespace FrigoTab {
 5 | 
 6 |     public static class Points {
 7 | 
 8 |         public static Point ClientToScreen (this Point point, WindowHandle handle) {
 9 |             ClientToScreen(handle, ref point);
10 |             return point;
11 |         }
12 | 
13 |         public static Point ScreenToClient (this Point point, WindowHandle handle) {
14 |             ScreenToClient(handle, ref point);
15 |             return point;
16 |         }
17 | 
18 |         [DllImport("user32.dll")]
19 |         private static extern bool ClientToScreen (WindowHandle hWnd, ref Point lpPoint);
20 | 
21 |         [DllImport("user32.dll")]
22 |         private static extern bool ScreenToClient (WindowHandle hWnd, ref Point lpPoint);
23 | 
24 |     }
25 | 
26 | }
27 | 


--------------------------------------------------------------------------------
/FrigoTab/Program.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Diagnostics;
 3 | using System.Drawing;
 4 | using System.Windows.Forms;
 5 | 
 6 | namespace FrigoTab {
 7 | 
 8 |     public static class Program {
 9 | 
10 |         public static readonly Icon Icon = Icon.ExtractAssociatedIcon(Application.ExecutablePath);
11 | 
12 |         [STAThread]
13 |         private static void Main () {
14 |             Application.EnableVisualStyles();
15 |             Application.SetCompatibleTextRenderingDefault(false);
16 | 
17 |             using( KeyHook keyHook = new KeyHook() ) {
18 |                 using( SysTrayIcon sysTrayIcon = new SysTrayIcon() ) {
19 |                     using( SessionForm sessionForm = new SessionForm() ) {
20 |                         keyHook.KeyEvent += sessionForm.HandleKeyEvents;
21 |                         sysTrayIcon.Exit += sessionForm.Close;
22 | 
23 |                         StartQuitTimer();
24 |                         Application.Run(sessionForm);
25 |                     }
26 |                 }
27 |             }
28 |         }
29 | 
30 |         [Conditional("DEBUG")]
31 |         private static void StartQuitTimer () {
32 |             Timer timer = new Timer {
33 |                 Interval = 10 * 1000
34 |             };
35 |             timer.Tick += (sender, args) => { Application.Exit(); };
36 |             timer.Start();
37 |         }
38 | 
39 |     }
40 | 
41 | }
42 | 


--------------------------------------------------------------------------------
/FrigoTab/Program.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/FrigoCoder/FrigoTab/a527f1d46d69e84aa8b3e16a8ae08ec36ab802d9/FrigoTab/Program.ico


--------------------------------------------------------------------------------
/FrigoTab/Program.svg:
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 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <!-- Created with Inkscape (http://www.inkscape.org/) -->
 3 | 
 4 | <svg
 5 |    xmlns:dc="http://purl.org/dc/elements/1.1/"
 6 |    xmlns:cc="http://creativecommons.org/ns#"
 7 |    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 8 |    xmlns:svg="http://www.w3.org/2000/svg"
 9 |    xmlns="http://www.w3.org/2000/svg"
10 |    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
11 |    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
12 |    width="256"
13 |    height="256"
14 |    viewBox="0 0 256 256"
15 |    id="svg4184"
16 |    version="1.1"
17 |    inkscape:version="0.91 r13725"
18 |    sodipodi:docname="AppIcon.svg"
19 |    inkscape:export-filename="C:\code\FrigoTab\AppIcon.png"
20 |    inkscape:export-xdpi="90"
21 |    inkscape:export-ydpi="90">
22 |   <defs
23 |      id="defs4186" />
24 |   <sodipodi:namedview
25 |      id="base"
26 |      pagecolor="#ffffff"
27 |      bordercolor="#666666"
28 |      borderopacity="1.0"
29 |      inkscape:pageopacity="0.0"
30 |      inkscape:pageshadow="2"
31 |      inkscape:zoom="3.9492188"
32 |      inkscape:cx="69.634026"
33 |      inkscape:cy="128"
34 |      inkscape:document-units="px"
35 |      inkscape:current-layer="layer1"
36 |      showgrid="false"
37 |      inkscape:window-width="1858"
38 |      inkscape:window-height="1178"
39 |      inkscape:window-x="-8"
40 |      inkscape:window-y="-8"
41 |      inkscape:window-maximized="1"
42 |      units="px" />
43 |   <metadata
44 |      id="metadata4189">
45 |     <rdf:RDF>
46 |       <cc:Work
47 |          rdf:about="">
48 |         <dc:format>image/svg+xml</dc:format>
49 |         <dc:type
50 |            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
51 |         <dc:title />
52 |       </cc:Work>
53 |     </rdf:RDF>
54 |   </metadata>
55 |   <g
56 |      inkscape:label="Layer 1"
57 |      inkscape:groupmode="layer"
58 |      id="layer1"
59 |      transform="translate(0,-796.36219)">
60 |     <rect
61 |        style="fill:#ff7e00;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1;stroke-linecap:butt;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
62 |        id="rect4734"
63 |        width="192"
64 |        height="192"
65 |        x="0"
66 |        y="796.36218" />
67 |     <rect
68 |        style="fill:#0000ff;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1;stroke-linecap:butt;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
69 |        id="rect4736"
70 |        width="192"
71 |        height="192"
72 |        x="64"
73 |        y="860.36218" />
74 |   </g>
75 | </svg>
76 | 


--------------------------------------------------------------------------------
/FrigoTab/Property.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | 
 3 | namespace FrigoTab {
 4 | 
 5 |     public struct Property<T> {
 6 | 
 7 |         public event Action<T, T> Changed;
 8 | 
 9 |         public T Value {
10 |             get => current;
11 |             set {
12 |                 if( Equals(current, value) ) {
13 |                     return;
14 |                 }
15 |                 T oldValue = current;
16 |                 current = value;
17 |                 Changed?.Invoke(oldValue, value);
18 |             }
19 |         }
20 | 
21 |         private T current;
22 | 
23 |     }
24 | 
25 | }
26 | 


--------------------------------------------------------------------------------
/FrigoTab/Rect.cs:
--------------------------------------------------------------------------------
 1 | using System.Diagnostics.CodeAnalysis;
 2 | using System.Drawing;
 3 | 
 4 | namespace FrigoTab {
 5 | 
 6 |     [SuppressMessage("ReSharper", "NotAccessedField.Local")]
 7 |     public struct Rect {
 8 | 
 9 |         private readonly Point topLeft;
10 |         private readonly Point bottomRight;
11 | 
12 |         public Rect (Rectangle bounds) {
13 |             topLeft = bounds.Location;
14 |             bottomRight = new Point(bounds.X + bounds.Width, bounds.Y + bounds.Height);
15 |         }
16 | 
17 |         private Rect (Point topLeft, Point bottomRight) {
18 |             this.topLeft = topLeft;
19 |             this.bottomRight = bottomRight;
20 |         }
21 | 
22 |         public Rect ScreenToClient (WindowHandle window) => new Rect(topLeft.ScreenToClient(window), bottomRight.ScreenToClient(window));
23 |         public Size Size () => new Size(bottomRight.X - topLeft.X, bottomRight.Y - topLeft.Y);
24 | 
25 |     }
26 | 
27 | }
28 | 


--------------------------------------------------------------------------------
/FrigoTab/SessionForm.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Drawing;
  3 | using System.Linq;
  4 | using System.Runtime.InteropServices;
  5 | using System.Threading;
  6 | using System.Windows.Forms;
  7 | 
  8 | namespace FrigoTab {
  9 | 
 10 |     public class SessionForm : FrigoForm {
 11 | 
 12 |         private BackgroundWindows backgrounds;
 13 |         private ApplicationWindows applications;
 14 |         private bool active;
 15 | 
 16 |         public void HandleKeyEvents (KeyHookEventArgs e) {
 17 |             if( e.Key == (Keys.Alt | Keys.Tab) ) {
 18 |                 e.Handled = true;
 19 |                 WindowHandle.PostMessage(WindowMessages.BeginSession, 0, 0);
 20 |             }
 21 |         }
 22 | 
 23 |         protected override void Dispose (bool disposing) {
 24 |             EndSession();
 25 |             base.Dispose(disposing);
 26 |         }
 27 | 
 28 |         protected override void WndProc (ref Message m) {
 29 |             WindowMessages wm = (WindowMessages) m.Msg;
 30 |             if( wm == WindowMessages.BeginSession ) {
 31 |                 BeginSession();
 32 |             }
 33 |             base.WndProc(ref m);
 34 |         }
 35 | 
 36 |         protected override void OnKeyDown (KeyEventArgs e) => KeyPressed(e.KeyCode);
 37 |         protected override void OnMouseMove (MouseEventArgs e) => MouseMoved(e.Location.ClientToScreen(WindowHandle));
 38 |         protected override void OnMouseDown (MouseEventArgs e) => MouseClicked(e.Location.ClientToScreen(WindowHandle));
 39 | 
 40 |         private void BeginSession () {
 41 |             if( active ) {
 42 |                 return;
 43 |             }
 44 | 
 45 |             WindowFinder finder = new WindowFinder();
 46 |             if( finder.Windows.Count == 0 ) {
 47 |                 return;
 48 |             }
 49 | 
 50 |             WindowHandle.GetForegroundWindow().PostMessage(WindowMessages.ActivateApp, 0, Thread.CurrentThread.ManagedThreadId);
 51 |             foreach( Screen screen in Screen.AllScreens ) {
 52 |                 ChangeDisplaySettingsEx(screen.DeviceName, IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero);
 53 |             }
 54 |             Bounds = Screen.AllScreens.Select(screen => screen.Bounds).Aggregate(Rectangle.Union);
 55 | 
 56 |             backgrounds = new BackgroundWindows(this, finder);
 57 |             applications = new ApplicationWindows(this, finder);
 58 | 
 59 |             applications.SelectByIndex(0);
 60 | 
 61 |             Visible = true;
 62 |             applications.Visible.Value = true;
 63 |             WindowHandle.SetForeground();
 64 | 
 65 |             active = true;
 66 |         }
 67 | 
 68 |         private void EndSession () {
 69 |             if( !active ) {
 70 |                 return;
 71 |             }
 72 |             active = false;
 73 | 
 74 |             applications.Visible.Value = false;
 75 |             Visible = false;
 76 | 
 77 |             applications.Dispose();
 78 |             backgrounds.Dispose();
 79 |         }
 80 | 
 81 |         private void KeyPressed (Keys key) {
 82 |             if( key == Keys.Escape || key == (Keys.Menu | Keys.F4) ) {
 83 |                 EndSession();
 84 |             }
 85 |             if( Keys.D1 <= key && key <= Keys.D9 || Keys.NumPad1 <= key && key <= Keys.NumPad9 ) {
 86 |                 applications.SelectByIndex((char) key - '1');
 87 |                 ActivateEndSession();
 88 |             }
 89 |         }
 90 | 
 91 |         private void MouseMoved (Point point) => applications.SelectByPoint(point);
 92 | 
 93 |         private void MouseClicked (Point point) {
 94 |             applications.SelectByPoint(point);
 95 |             ActivateEndSession();
 96 |         }
 97 | 
 98 |         private void ActivateEndSession () {
 99 |             if( applications.Selected.Value == null ) {
100 |                 return;
101 |             }
102 |             applications.Selected.Value.Application.SetForeground();
103 |             EndSession();
104 |         }
105 | 
106 |         [DllImport("user32.dll")]
107 |         private static extern int ChangeDisplaySettingsEx (string lpszDeviceName, IntPtr lpDevMode, IntPtr hwnd, int dwflags, IntPtr lParam);
108 | 
109 |     }
110 | 
111 | }
112 | 


--------------------------------------------------------------------------------
/FrigoTab/SysTrayIcon.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Windows.Forms;
 3 | 
 4 | namespace FrigoTab {
 5 | 
 6 |     public class SysTrayIcon : IDisposable {
 7 | 
 8 |         public event Action Exit;
 9 | 
10 |         private readonly NotifyIcon notifyIcon;
11 | 
12 |         public SysTrayIcon () =>
13 |             notifyIcon = new NotifyIcon {
14 |                 Icon = Program.Icon,
15 |                 ContextMenu = new ContextMenu(new[] {new MenuItem("Exit", (sender, args) => { Exit?.Invoke(); })}),
16 |                 Visible = true
17 |             };
18 | 
19 |         public void Dispose () => notifyIcon.Dispose();
20 | 
21 |     }
22 | 
23 | }
24 | 


--------------------------------------------------------------------------------
/FrigoTab/Thumbnail.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Runtime.InteropServices;
 3 | 
 4 | #pragma warning disable 169
 5 | #pragma warning disable 414
 6 | 
 7 | namespace FrigoTab {
 8 | 
 9 |     public class Thumbnail : IDisposable {
10 | 
11 |         private IntPtr thumbnail;
12 | 
13 |         public Thumbnail (WindowHandle source, WindowHandle destination) => DwmRegisterThumbnail(destination, source, out thumbnail);
14 | 
15 |         ~Thumbnail () => Dispose();
16 | 
17 |         public void Dispose () {
18 |             if( thumbnail == IntPtr.Zero ) {
19 |                 return;
20 |             }
21 |             DwmUnregisterThumbnail(thumbnail);
22 |             thumbnail = IntPtr.Zero;
23 |             GC.SuppressFinalize(this);
24 |         }
25 | 
26 |         public void SetSourceRect (Rect sourceRect) {
27 |             ThumbnailProperties properties = new ThumbnailProperties {
28 |                 Flags = ThumbnailFlags.RectSource,
29 |                 Source = sourceRect
30 |             };
31 |             DwmUpdateThumbnailProperties(thumbnail, ref properties);
32 |         }
33 | 
34 |         public void SetDestinationRect (Rect destinationRect) {
35 |             ThumbnailProperties properties = new ThumbnailProperties {
36 |                 Flags = ThumbnailFlags.RectDestination,
37 |                 Destination = destinationRect
38 |             };
39 |             DwmUpdateThumbnailProperties(thumbnail, ref properties);
40 |         }
41 | 
42 |         private struct ThumbnailProperties {
43 | 
44 |             public ThumbnailFlags Flags;
45 |             public Rect Destination;
46 |             public Rect Source;
47 |             public byte Opacity;
48 |             public bool Visible;
49 |             public bool SourceClientAreaOnly;
50 | 
51 |         }
52 | 
53 |         [Flags]
54 |         private enum ThumbnailFlags {
55 | 
56 |             RectDestination = 1,
57 |             RectSource = 2
58 | 
59 |         }
60 | 
61 |         [DllImport("dwmapi.dll")]
62 |         private static extern int DwmRegisterThumbnail (WindowHandle dest, WindowHandle src, out IntPtr thumb);
63 | 
64 |         [DllImport("dwmapi.dll")]
65 |         private static extern int DwmUnregisterThumbnail (IntPtr thumb);
66 | 
67 |         [DllImport("dwmapi.dll")]
68 |         private static extern int DwmUpdateThumbnailProperties (IntPtr thumb, ref ThumbnailProperties props);
69 | 
70 |     }
71 | 
72 | }
73 | 


--------------------------------------------------------------------------------
/FrigoTab/WindowFinder.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Collections.Generic;
  3 | using System.Runtime.InteropServices;
  4 | 
  5 | namespace FrigoTab {
  6 | 
  7 |     public class WindowFinder {
  8 | 
  9 |         public readonly IList<WindowHandle> Windows = new List<WindowHandle>();
 10 |         public readonly IList<WindowHandle> ToolWindows = new List<WindowHandle>();
 11 | 
 12 |         public WindowFinder () => EnumWindows(EnumWindowCallback, IntPtr.Zero);
 13 | 
 14 |         private bool EnumWindowCallback (WindowHandle handle, IntPtr lParam) {
 15 |             switch( GetWindowType(handle) ) {
 16 |                 case WindowType.AppWindow:
 17 |                     Windows.Add(handle);
 18 |                     break;
 19 |                 case WindowType.ToolWindow:
 20 |                     ToolWindows.Add(handle);
 21 |                     break;
 22 |                 case WindowType.Hidden:
 23 |                     break;
 24 |                 default:
 25 |                     throw new ArgumentOutOfRangeException();
 26 |             }
 27 |             return true;
 28 |         }
 29 | 
 30 |         private enum WindowType {
 31 | 
 32 |             Hidden,
 33 |             AppWindow,
 34 |             ToolWindow
 35 | 
 36 |         }
 37 | 
 38 |         private enum WindowAttribute {
 39 | 
 40 |             Cloaked = 0xe
 41 | 
 42 |         }
 43 | 
 44 |         private delegate bool EnumWindowsProc (WindowHandle handle, IntPtr lParam);
 45 | 
 46 |         private static WindowType GetWindowType (WindowHandle handle) {
 47 |             if( IsCloaked(handle) ) {
 48 |                 return WindowType.Hidden;
 49 |             }
 50 | 
 51 |             WindowStyles style = handle.GetWindowStyles();
 52 |             if( style.HasFlag(WindowStyles.Disabled) ) {
 53 |                 return WindowType.Hidden;
 54 |             }
 55 |             if( !style.HasFlag(WindowStyles.Visible) ) {
 56 |                 return WindowType.Hidden;
 57 |             }
 58 | 
 59 |             WindowExStyles ex = handle.GetWindowExStyles();
 60 |             if( ex.HasFlag(WindowExStyles.NoActivate) ) {
 61 |                 return WindowType.Hidden;
 62 |             }
 63 |             if( ex.HasFlag(WindowExStyles.AppWindow) ) {
 64 |                 return WindowType.AppWindow;
 65 |             }
 66 |             if( ex.HasFlag(WindowExStyles.ToolWindow) ) {
 67 |                 return WindowType.ToolWindow;
 68 |             }
 69 | 
 70 |             return IsAltTabWindow(handle) ? WindowType.AppWindow : WindowType.Hidden;
 71 |         }
 72 | 
 73 |         private static bool IsCloaked (WindowHandle window) {
 74 |             DwmGetWindowAttribute(window, WindowAttribute.Cloaked, out bool cloaked, Marshal.SizeOf(typeof(bool)));
 75 |             return cloaked;
 76 |         }
 77 | 
 78 |         private static bool IsAltTabWindow (WindowHandle hwnd) => GetLastActiveVisiblePopup(GetAncestor(hwnd, 3)) == hwnd;
 79 | 
 80 |         private static WindowHandle GetLastActiveVisiblePopup (WindowHandle root) {
 81 |             WindowHandle hwndWalk = WindowHandle.Null;
 82 |             WindowHandle hwndTry = root;
 83 |             while( hwndWalk != hwndTry ) {
 84 |                 hwndWalk = hwndTry;
 85 |                 hwndTry = GetLastActivePopup(hwndWalk);
 86 |                 if( IsWindowVisible(hwndTry) ) {
 87 |                     return hwndTry;
 88 |                 }
 89 |             }
 90 |             return WindowHandle.Null;
 91 |         }
 92 | 
 93 |         [DllImport("user32.dll")]
 94 |         private static extern bool EnumWindows (EnumWindowsProc enumFunc, IntPtr lParam);
 95 | 
 96 |         [DllImport("user32.dll")]
 97 |         private static extern WindowHandle GetAncestor (WindowHandle hWnd, int gaFlags);
 98 | 
 99 |         [DllImport("user32.dll")]
100 |         private static extern WindowHandle GetLastActivePopup (WindowHandle hWnd);
101 | 
102 |         [DllImport("user32.dll")]
103 |         private static extern bool IsWindowVisible (WindowHandle hWnd);
104 | 
105 |         [DllImport("dwmapi.dll")]
106 |         private static extern int DwmGetWindowAttribute (WindowHandle hWnd, WindowAttribute dwAttribute, out bool pvAttribute, int cbAttribute);
107 | 
108 |     }
109 | 
110 | }
111 | 


--------------------------------------------------------------------------------
/FrigoTab/WindowHandle.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Drawing;
  3 | using System.Runtime.InteropServices;
  4 | using System.Text;
  5 | using System.Windows.Forms;
  6 | 
  7 | namespace FrigoTab {
  8 | 
  9 |     [Flags]
 10 |     public enum WindowStyles : long {
 11 | 
 12 |         Disabled = 0x8000000,
 13 |         Visible = 0x10000000,
 14 |         Minimize = 0x20000000
 15 | 
 16 |     }
 17 | 
 18 |     [Flags]
 19 |     public enum WindowExStyles : long {
 20 | 
 21 |         Transparent = 0x20,
 22 |         ToolWindow = 0x80,
 23 |         AppWindow = 0x40000,
 24 |         Layered = 0x80000,
 25 |         NoActivate = 0x8000000
 26 | 
 27 |     }
 28 | 
 29 |     public struct WindowHandle {
 30 | 
 31 |         public static readonly WindowHandle Null = new WindowHandle(IntPtr.Zero);
 32 |         public static bool operator == (WindowHandle h1, WindowHandle h2) => h1.handle == h2.handle;
 33 |         public static bool operator != (WindowHandle h1, WindowHandle h2) => h1.handle != h2.handle;
 34 | 
 35 |         [DllImport("user32.dll")]
 36 |         public static extern WindowHandle GetForegroundWindow ();
 37 | 
 38 |         private readonly IntPtr handle;
 39 | 
 40 |         public WindowHandle (IntPtr handle) => this.handle = handle;
 41 |         public override bool Equals (object obj) => obj != null && GetType() == obj.GetType() && handle == ((WindowHandle) obj).handle;
 42 |         public override int GetHashCode () => handle.GetHashCode();
 43 |         public Screen GetScreen () => Screen.FromHandle(handle);
 44 |         public WindowStyles GetWindowStyles () => (WindowStyles) GetWindowLongPtr(this, WindowLong.Style);
 45 |         public WindowExStyles GetWindowExStyles () => (WindowExStyles) GetWindowLongPtr(this, WindowLong.ExStyle);
 46 |         public void PostMessage (WindowMessages msg, int wParam, int lParam) => PostMessage(this, msg, (IntPtr) wParam, (IntPtr) lParam);
 47 | 
 48 |         public void SetForeground () {
 49 |             if( GetWindowStyles().HasFlag(WindowStyles.Minimize) ) {
 50 |                 ShowWindow(this, ShowWindowCommand.Restore);
 51 |             }
 52 |             keybd_event(0, 0, 0, 0);
 53 |             SetForegroundWindow(this);
 54 |         }
 55 | 
 56 |         public string GetWindowText () {
 57 |             StringBuilder text = new StringBuilder(GetWindowTextLength(this) + 1);
 58 |             GetWindowText(this, text, text.Capacity);
 59 |             return text.ToString();
 60 |         }
 61 | 
 62 |         public Rect GetRect () {
 63 |             WindowPlacement placement = GetWindowPlacement();
 64 |             switch( placement.ShowCmd ) {
 65 |                 case ShowWindowCommand.ShowNormal:
 66 |                 case ShowWindowCommand.ShowMinimized:
 67 |                     return placement.NormalPosition;
 68 |                 case ShowWindowCommand.ShowMaximized:
 69 |                     GetWindowRect(this, out Rect rect);
 70 |                     return rect;
 71 |                 default:
 72 |                     throw new ArgumentException();
 73 |             }
 74 |         }
 75 | 
 76 |         private WindowPlacement GetWindowPlacement () {
 77 |             WindowPlacement placement = new WindowPlacement();
 78 |             placement.Length = Marshal.SizeOf(placement);
 79 |             GetWindowPlacement(this, ref placement);
 80 |             return placement;
 81 |         }
 82 | 
 83 |         private struct WindowPlacement {
 84 | 
 85 |             public int Length;
 86 |             public int Flags;
 87 |             public ShowWindowCommand ShowCmd;
 88 |             public Point MinPosition;
 89 |             public Point MaxPosition;
 90 |             public Rect NormalPosition;
 91 | 
 92 |         }
 93 | 
 94 |         private enum ShowWindowCommand {
 95 | 
 96 |             ShowNormal = 1,
 97 |             ShowMinimized = 2,
 98 |             ShowMaximized = 3,
 99 |             Restore = 9
100 | 
101 |         }
102 | 
103 |         private enum WindowLong {
104 | 
105 |             ExStyle = -20,
106 |             Style = -16
107 | 
108 |         }
109 | 
110 |         [DllImport("user32.dll")]
111 |         private static extern int GetWindowTextLength (WindowHandle hWnd);
112 | 
113 |         [DllImport("user32.dll")]
114 |         private static extern int GetWindowText (WindowHandle hWnd, StringBuilder lpString, int nMaxCount);
115 | 
116 |         [DllImport("user32.dll")]
117 |         private static extern IntPtr GetWindowLongPtr (WindowHandle hWnd, WindowLong nIndex);
118 | 
119 |         [DllImport("user32.dll")]
120 |         private static extern bool ShowWindow (WindowHandle hWnd, ShowWindowCommand nCmdShow);
121 | 
122 |         [DllImport("user32.dll")]
123 |         private static extern bool SetForegroundWindow (WindowHandle hWnd);
124 | 
125 |         [DllImport("user32.dll")]
126 |         private static extern void keybd_event (byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
127 | 
128 |         [DllImport("user32.dll")]
129 |         private static extern bool PostMessage (WindowHandle hWnd, WindowMessages msg, IntPtr wParam, IntPtr lParam);
130 | 
131 |         [DllImport("user32.dll")]
132 |         private static extern bool GetWindowRect (WindowHandle hWnd, out Rect rect);
133 | 
134 |         [DllImport("user32.dll")]
135 |         private static extern bool GetWindowPlacement (WindowHandle hWnd, ref WindowPlacement lpwndpl);
136 | 
137 |     }
138 | 
139 | }
140 | 


--------------------------------------------------------------------------------
/FrigoTab/WindowIcon.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Diagnostics.CodeAnalysis;
 3 | using System.Drawing;
 4 | using System.Runtime.InteropServices;
 5 | 
 6 | namespace FrigoTab {
 7 | 
 8 |     public class WindowIcon {
 9 | 
10 |         public event Action Changed;
11 |         public Icon Icon;
12 | 
13 |         [SuppressMessage("ReSharper", "PrivateFieldCanBeConvertedToLocalVariable")]
14 |         private readonly SendMessageDelegate callback;
15 | 
16 |         public WindowIcon (WindowHandle handle) {
17 |             IntPtr icon = GetClassLongPtr(handle, ClassLong.Icon);
18 |             Icon = icon == IntPtr.Zero ? Program.Icon : Icon.FromHandle(icon);
19 |             callback = Callback;
20 |             SendMessageCallback(handle, WindowMessages.GetIcon, GetIconSize.Big, (IntPtr) 0, callback, (IntPtr) 0);
21 |         }
22 | 
23 |         private void Callback (WindowHandle hWnd, int msg, IntPtr dwData, IntPtr lResult) {
24 |             if( lResult == IntPtr.Zero ) {
25 |                 return;
26 |             }
27 |             Icon = Icon.FromHandle(lResult);
28 |             Changed?.Invoke();
29 |         }
30 | 
31 |         private enum ClassLong {
32 | 
33 |             Icon = -14
34 | 
35 |         }
36 | 
37 |         private enum GetIconSize {
38 | 
39 |             Big = 1
40 | 
41 |         }
42 | 
43 |         private delegate void SendMessageDelegate (WindowHandle hWnd, int msg, IntPtr dwData, IntPtr lResult);
44 | 
45 |         [DllImport("user32.dll")]
46 |         private static extern IntPtr GetClassLongPtr (WindowHandle hWnd, ClassLong nIndex);
47 | 
48 |         [DllImport("user32.dll")]
49 |         private static extern bool SendMessageCallback (WindowHandle hWnd, WindowMessages message, GetIconSize wParam, IntPtr lParam,
50 |             SendMessageDelegate lpCallBack, IntPtr dwData);
51 | 
52 |     }
53 | 
54 | }
55 | 


--------------------------------------------------------------------------------
/FrigoTab/WindowMessages.cs:
--------------------------------------------------------------------------------
 1 | namespace FrigoTab {
 2 | 
 3 |     public enum WindowMessages {
 4 | 
 5 |         ActivateApp = 0x001c,
 6 |         DisplayChange = 0x007e,
 7 |         GetIcon = 0x007f,
 8 | 
 9 |         User = 0x4000,
10 |         BeginSession = User + 1,
11 |         EndSession = User + 2
12 | 
13 |     }
14 | 
15 | }
16 | 


--------------------------------------------------------------------------------
/Licence.txt:
--------------------------------------------------------------------------------
  1 |                     GNU GENERAL PUBLIC LICENSE
  2 |                        Version 3, 29 June 2007
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498 | 
499 |   If you convey a covered work, knowingly relying on a patent license,
500 | and the Corresponding Source of the work is not available for anyone
501 | to copy, free of charge and under the terms of this License, through a
502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients.  "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 | 
513 |   If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 | 
521 |   A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License.  You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 | 
536 |   Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 | 
540 |   12. No Surrender of Others' Freedom.
541 | 
542 |   If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License.  If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all.  For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 | 
552 |   13. Use with the GNU Affero General Public License.
553 | 
554 |   Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work.  The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 | 
563 |   14. Revised Versions of this License.
564 | 
565 |   The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time.  Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 | 
570 |   Each version is given a distinguishing version number.  If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation.  If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 | 
579 |   If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 | 
584 |   Later license versions may give you additional or different
585 | permissions.  However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 | 
589 |   15. Disclaimer of Warranty.
590 | 
591 |   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 | 
600 |   16. Limitation of Liability.
601 | 
602 |   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 | 
612 |   17. Interpretation of Sections 15 and 16.
613 | 
614 |   If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 | 
621 |                      END OF TERMS AND CONDITIONS
622 | 
623 |             How to Apply These Terms to Your New Programs
624 | 
625 |   If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 | 
629 |   To do so, attach the following notices to the program.  It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 | 
634 |     <one line to give the program's name and a brief idea of what it does.>
635 |     Copyright (C) <year>  <name of author>
636 | 
637 |     This program is free software: you can redistribute it and/or modify
638 |     it under the terms of the GNU General Public License as published by
639 |     the Free Software Foundation, either version 3 of the License, or
640 |     (at your option) any later version.
641 | 
642 |     This program is distributed in the hope that it will be useful,
643 |     but WITHOUT ANY WARRANTY; without even the implied warranty of
644 |     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
645 |     GNU General Public License for more details.
646 | 
647 |     You should have received a copy of the GNU General Public License
648 |     along with this program.  If not, see <http://www.gnu.org/licenses/>.
649 | 
650 | Also add information on how to contact you by electronic and paper mail.
651 | 
652 |   If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 | 
655 |     <program>  Copyright (C) <year>  <name of author>
656 |     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 |     This is free software, and you are welcome to redistribute it
658 |     under certain conditions; type `show c' for details.
659 | 
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License.  Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 | 
664 |   You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | <http://www.gnu.org/licenses/>.
668 | 
669 |   The GNU General Public License does not permit incorporating your program
670 | into proprietary programs.  If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library.  If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License.  But first, please read
674 | <http://www.gnu.org/philosophy/why-not-lgpl.html>.
675 | 


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/Readme.md:
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1 | # FrigoTab
2 | 
3 | Alt-Tab replacement application.
4 | 


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