Fade Selected Monitor to Black

Return to DisplayFusion Scripted Functions (Macros)

Description	Fades the selected monitor to black over a two second period. On the second run, the monitor unfades.
Language	C# (.Net)
Minimum Version	9.0.0+
Created By	Keith Lammers (BFS)
Contributors	-
Date Created	Aug 28, 2017
Date Last Modified	Nov 5, 2019

Scripted Function (Macro) Code

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using System; using System.Drawing; using System.Windows.Forms; using System.Threading; using System.Collections.Generic; // Based entirely on NetMage's "Fade All Monitors Except the Primary Monitor to Black" which was based on Thomas' "Dim All Monitors Except Primary" public static class DisplayFusionFunction { private static readonly string SettingName = "BlackenMonitors_Run"; public static void Run(IntPtr windowHandle) { //toggle the setting from running to not running, and vice versa ToggleSetting(); if (RunFadeMonitors()) { //add the selected monitor to the form var forms = new List<Form>(); forms.Add(new TransparentForm(BFS.Monitor.ShowMonitorSelector())); //this will open the forms we added to the list by using our custom application context Application.Run(new MultipleFormApplicationContext(forms)); } } //this function allows us to see the currect state of the script private static bool RunFadeMonitors() { return BFS.ScriptSettings.ReadValue(SettingName) == "run"; } //this function toggles the script settings from running to not running private static void ToggleSetting() { BFS.ScriptSettings.WriteValue(SettingName, RunFadeMonitors() ? "not" : "run"); } //extend the ApplicationContext class to support opening multiple forms private class MultipleFormApplicationContext : ApplicationContext { internal MultipleFormApplicationContext(List<Form> forms) { //open each of the forms, and add our closing event to them foreach(Form form in forms) { form.FormClosed += OnFormClosed; form.Show(); } } //when all the forms close, make sure to exit the application private void OnFormClosed(object sender, EventArgs e) { if(Application.OpenForms.Count == 0) ExitThread(); } } //extend the Form class to get the behavior we want private class TransparentForm : Form { //this will tell us what monitor to open on private uint MonitorId; private uint FadeWait; private decimal TransparentIncrement; private IntPtr HandleTHREADSAFE; //this will tell us our current transparency private decimal Transparency; //the contructor for our class internal TransparentForm(uint monitorId) { MonitorId = monitorId; Transparency = 0m; const decimal FadeTime = 2.0m; // seconds TransparentIncrement = 1m; // percent FadeWait = (uint)(TransparentIncrement * 10m * FadeTime); SuspendLayout(); //setup the layout of this form BackColor = Color.Black; FormBorderStyle = FormBorderStyle.None; ShowInTaskbar = false; //move the window to the desired monitor Rectangle bounds = BFS.Monitor.GetMonitorBoundsByID(MonitorId); Location = new Point(bounds.X, bounds.Y); Size = new Size(bounds.Width, bounds.Height); StartPosition = FormStartPosition.Manual; BFS.Window.SetAlwaysOnTop(Handle, true); BFS.Window.SetTransparency(Handle, Transparency); //setup the form load event Load += Form_Load; ResumeLayout(false); } private void Form_Load(object sender, EventArgs e) { HandleTHREADSAFE = Handle; //add a windows style to the current style that will //tell this window to ignore user input uint style = (uint)BFS.Window.GetWindowStyleEx(Handle) | (uint)BFS.WindowEnum.WindowStyleEx.WS_EX_TRANSPARENT | (uint)BFS.WindowEnum.WindowStyleEx.WS_EX_LAYERED; BFS.Window.SetWindowStyleEx((BFS.WindowEnum.WindowStyleEx)style, Handle); //start up a thread to listen for an exit event new Thread(new ThreadStart(ExitListener)).Start(); } private void ExitListener() { try { while(true) { //if we should close, tell the main thread to close the form if(RunFadeMonitors()) { // Fade to Black if (Transparency < 100m) { Transparency += TransparentIncrement; BFS.Window.SetTransparency(HandleTHREADSAFE, Transparency); } //sleep BFS.General.ThreadWait((Transparency < 100m) ? FadeWait : 250u); } else { if (this.Transparency > 0m) { // Fade back in Transparency -= TransparentIncrement; BFS.Window.SetTransparency(HandleTHREADSAFE, Transparency); //sleep BFS.General.ThreadWait((Transparency < 100m) ? FadeWait : 250u); } else { try { this.Invoke((MethodInvoker) delegate { Close(); }); } catch { //something went wrong, ignore } break; } } } } catch { } } } }