From e44a6a032f21775de0f328f484c42fcdde952223 Mon Sep 17 00:00:00 2001
From: MountainFlash <65584814+MinshuG@users.noreply.github.com>
Date: Sat, 4 Mar 2023 15:59:06 +0530
Subject: [PATCH] dpi scaling

---
 FModel/Framework/ImGuiController.cs     | 15 ++++++++++++---
 FModel/ViewModels/CUE4ParseViewModel.cs |  8 ++++++--
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/FModel/Framework/ImGuiController.cs b/FModel/Framework/ImGuiController.cs
index a51b1b27..16864be4 100644
--- a/FModel/Framework/ImGuiController.cs
+++ b/FModel/Framework/ImGuiController.cs
@@ -3,11 +3,14 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Numerics;
 using System.Runtime.CompilerServices;
+using System.Windows;
+using System.Windows.Forms;
 using ImGuiNET;
 using OpenTK.Graphics.OpenGL4;
 using OpenTK.Windowing.Desktop;
 using OpenTK.Windowing.GraphicsLibraryFramework;
 using ErrorCode = OpenTK.Graphics.OpenGL4.ErrorCode;
+using Keys = OpenTK.Windowing.GraphicsLibraryFramework.Keys;
 
 namespace FModel.Framework;
 
@@ -38,6 +41,7 @@ public class ImGuiController : IDisposable
     public ImFontPtr FontSemiBold;
 
     private readonly Vector2 _scaleFactor = Vector2.One;
+    public readonly float DpiScale = GetDpiScale();
 
     private static bool KHRDebugAvailable = false;
 
@@ -57,9 +61,9 @@ public class ImGuiController : IDisposable
         // ImGui.LoadIniSettingsFromDisk(_iniPath);
 
         var io = ImGui.GetIO();
-        FontNormal = io.Fonts.AddFontFromFileTTF("C:\\Windows\\Fonts\\segoeui.ttf", 16);
-        FontBold = io.Fonts.AddFontFromFileTTF("C:\\Windows\\Fonts\\segoeuib.ttf", 16);
-        FontSemiBold = io.Fonts.AddFontFromFileTTF("C:\\Windows\\Fonts\\seguisb.ttf", 16);
+        FontNormal = io.Fonts.AddFontFromFileTTF("C:\\Windows\\Fonts\\segoeui.ttf", 16*DpiScale);
+        FontBold = io.Fonts.AddFontFromFileTTF("C:\\Windows\\Fonts\\segoeuib.ttf", 16*DpiScale);
+        FontSemiBold = io.Fonts.AddFontFromFileTTF("C:\\Windows\\Fonts\\seguisb.ttf", 16*DpiScale);
 
         io.BackendFlags |= ImGuiBackendFlags.RendererHasVtxOffset;
         io.ConfigFlags |= ImGuiConfigFlags.NavEnableKeyboard;
@@ -634,4 +638,9 @@ outputColor = color * texture(in_fontTexture, texCoord);
             Debug.Print($"{title} ({i++}): {error}");
         }
     }
+
+    public static float GetDpiScale()
+    {
+        return Math.Max((float)(Screen.PrimaryScreen.Bounds.Width / SystemParameters.PrimaryScreenWidth), (float)(Screen.PrimaryScreen.Bounds.Height / SystemParameters.PrimaryScreenHeight));
+    }
 }
diff --git a/FModel/ViewModels/CUE4ParseViewModel.cs b/FModel/ViewModels/CUE4ParseViewModel.cs
index 41041e3e..19df0297 100644
--- a/FModel/ViewModels/CUE4ParseViewModel.cs
+++ b/FModel/ViewModels/CUE4ParseViewModel.cs
@@ -6,6 +6,7 @@ using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Windows;
+using System.Windows.Forms;
 using AdonisUI.Controls;
 using CUE4Parse.Encryption.Aes;
 using CUE4Parse.FileProvider;
@@ -40,12 +41,14 @@ using FModel.Settings;
 using FModel.Views;
 using FModel.Views.Resources.Controls;
 using FModel.Views.Snooper;
+using ImGuiNET;
 using Newtonsoft.Json;
 using Ookii.Dialogs.Wpf;
 using OpenTK.Windowing.Common;
 using OpenTK.Windowing.Desktop;
 using Serilog;
 using SkiaSharp;
+using Application = System.Windows.Application;
 
 namespace FModel.ViewModels;
 
@@ -87,13 +90,14 @@ public class CUE4ParseViewModel : ViewModel
         {
             return Application.Current.Dispatcher.Invoke(delegate
             {
+                float dpiScale = ImGuiController.GetDpiScale();
                 return _snooper ??= new Snooper(
                     new GameWindowSettings { RenderFrequency = Snooper.GetMaxRefreshFrequency() },
                     new NativeWindowSettings
                     {
                         Size = new OpenTK.Mathematics.Vector2i(
-                            Convert.ToInt32(SystemParameters.MaximizedPrimaryScreenWidth * .75),
-                            Convert.ToInt32(SystemParameters.MaximizedPrimaryScreenHeight * .85)),
+                            Convert.ToInt32(SystemParameters.MaximizedPrimaryScreenWidth * .75 * dpiScale),
+                            Convert.ToInt32(SystemParameters.MaximizedPrimaryScreenHeight * .85 * dpiScale)),
                         NumberOfSamples = Constants.SAMPLES_COUNT,
                         WindowBorder = WindowBorder.Resizable,
                         Flags = ContextFlags.ForwardCompatible,