From 5f330ddb827075b044c7db58e1115d9838246cba Mon Sep 17 00:00:00 2001
From: LarsBrubaker <larsbrubaker@gmail.com>
Date: Fri, 15 May 2020 16:57:45 -0700
Subject: [PATCH] adding support for high res monitors (dpi awareness)

---
 .../ApplicationSettingsPage.cs                | 25 ++++++++++++++++++-
 .../SettingsManagement/UserSettings.cs        |  1 +
 Program.cs                                    | 17 +++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/MatterControlLib/SettingsManagement/ApplicationSettingsPage.cs b/MatterControlLib/SettingsManagement/ApplicationSettingsPage.cs
index dc433e810..5f99900e8 100644
--- a/MatterControlLib/SettingsManagement/ApplicationSettingsPage.cs
+++ b/MatterControlLib/SettingsManagement/ApplicationSettingsPage.cs
@@ -246,7 +246,7 @@ namespace MatterHackers.MatterControl
 
 			double sliderThumbWidth = 10 * GuiWidget.DeviceScale;
 			double sliderWidth = 100 * GuiWidget.DeviceScale;
-			var textSizeSlider = new SolidSlider(new Vector2(), sliderThumbWidth, theme, .7, 1.4)
+			var textSizeSlider = new SolidSlider(new Vector2(), sliderThumbWidth, theme, .7, 2.5)
 			{
 				Name = "Text Size Slider",
 				Margin = new BorderDouble(5, 0),
@@ -334,6 +334,29 @@ namespace MatterHackers.MatterControl
 					}),
 				advancedPanel);
 
+			// Touch Screen Mode
+			this.AddSettingsRow(
+				new SettingsItem(
+					"Utilize High Res Monitors".Localize(),
+					theme,
+					new SettingsItem.ToggleSwitchConfig()
+					{
+						Checked = UserSettings.Instance.get(UserSettingsKey.ApplicationDpiAwareness) == "PerMonitorAware",
+						ToggleAction = (itemChecked) =>
+						{
+							string dpiAwareness = itemChecked ? "PerMonitorAware" : "None";
+							if (dpiAwareness != UserSettings.Instance.get(UserSettingsKey.ApplicationDpiAwareness))
+							{
+								UserSettings.Instance.set(UserSettingsKey.ApplicationDpiAwareness, dpiAwareness);
+								StyledMessageBox.ShowMessageBox(
+									"To finish changing your monitor settings you need to restart MatterControl. If after changing your fonts are too small you can adjust Text Size.".Localize(),
+									"Restart Required".Localize());
+								UiThread.RunOnIdle(() => ApplicationController.Instance.ReloadAll().ConfigureAwait(false));
+							}
+						}
+					}),
+				advancedPanel);
+
 			var openCacheButton = new IconButton(AggContext.StaticData.LoadIcon("fa-link_16.png", 16, 16, theme.InvertIcons), theme)
 			{
 				ToolTipText = "Open Folder".Localize(),
diff --git a/MatterControlLib/SettingsManagement/UserSettings.cs b/MatterControlLib/SettingsManagement/UserSettings.cs
index 5022f113c..dfdda5ea5 100644
--- a/MatterControlLib/SettingsManagement/UserSettings.cs
+++ b/MatterControlLib/SettingsManagement/UserSettings.cs
@@ -17,6 +17,7 @@ namespace MatterHackers.MatterControl
 		public const string AfterPrintFinishedSendEmail = nameof(AfterPrintFinishedSendEmail);
 		public const string AfterPrintFinishedSendTextMessage = nameof(AfterPrintFinishedSendTextMessage);
 		public const string ApplicationDisplayMode = nameof(ApplicationDisplayMode);
+		public const string ApplicationDpiAwareness = nameof(ApplicationDpiAwareness);
 		public const string ApplicationTextSize = nameof(ApplicationTextSize);
 		public const string ColorPanelExpanded = nameof(ColorPanelExpanded);
 		public const string ConfigurePrinter_CurrentTab = nameof(ConfigurePrinter_CurrentTab);
diff --git a/Program.cs b/Program.cs
index 311a7b562..8c9cdb182 100644
--- a/Program.cs
+++ b/Program.cs
@@ -31,6 +31,7 @@ using System;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.ServiceModel;
 using System.ServiceModel.Description;
 using System.Threading;
@@ -59,6 +60,17 @@ namespace MatterHackers.MatterControl
 
 		private const string ServiceBaseUri = "net.pipe://localhost/mattercontrol";
 
+		[DllImport("Shcore.dll")]
+		static extern int SetProcessDpiAwareness(int PROCESS_DPI_AWARENESS);
+
+		// According to https://msdn.microsoft.com/en-us/library/windows/desktop/dn280512(v=vs.85).aspx
+		private enum DpiAwareness
+		{
+			None = 0,
+			SystemAware = 1,
+			PerMonitorAware = 2
+		}
+
 		[STAThread]
 		public static void Main(string[] args)
 		{
@@ -155,6 +167,11 @@ namespace MatterHackers.MatterControl
 			Directory.SetCurrentDirectory(Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location));
 
 			Datastore.Instance.Initialize(DesktopSqlite.CreateInstance());
+
+			if (UserSettings.Instance.get(UserSettingsKey.ApplicationDpiAwareness) == "PerMonitorAware")
+			{
+				SetProcessDpiAwareness((int)DpiAwareness.PerMonitorAware);
+			}
 #if !DEBUG
 			// Conditionally spin up error reporting if not on the Stable channel
 			string channel = UserSettings.Instance.get(UserSettingsKey.UpdateFeedType);