From 8076d63ce277cf4392ee7c9d0feb2549efb75d39 Mon Sep 17 00:00:00 2001
From: azyges <aaaaaa@aaa.aaa>
Date: Sun, 30 Nov 2025 21:35:17 +0900
Subject: [PATCH] add chat message scaling

---
 .../Configurations/ChatConfig.cs              |  1 +
 LightlessSync/UI/ZoneChatUi.cs                | 34 +++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/LightlessSync/LightlessConfiguration/Configurations/ChatConfig.cs b/LightlessSync/LightlessConfiguration/Configurations/ChatConfig.cs
index 7812887..9065b81 100644
--- a/LightlessSync/LightlessConfiguration/Configurations/ChatConfig.cs
+++ b/LightlessSync/LightlessConfiguration/Configurations/ChatConfig.cs
@@ -12,4 +12,5 @@ public sealed class ChatConfig : ILightlessConfiguration
     public float ChatWindowOpacity { get; set; } = .97f;
     public bool IsWindowPinned { get; set; } = false;
     public bool AutoOpenChatOnPluginLoad { get; set; } = false;
+    public float ChatFontScale { get; set; } = 1.0f;
 }
diff --git a/LightlessSync/UI/ZoneChatUi.cs b/LightlessSync/UI/ZoneChatUi.cs
index c3ed2da..aeddbbb 100644
--- a/LightlessSync/UI/ZoneChatUi.cs
+++ b/LightlessSync/UI/ZoneChatUi.cs
@@ -33,6 +33,8 @@ public sealed class ZoneChatUi : WindowMediatorSubscriberBase
     private const float DefaultWindowOpacity = .97f;
     private const float MinWindowOpacity = 0.05f;
     private const float MaxWindowOpacity = 1f;
+    private const float MinChatFontScale = 0.75f;
+    private const float MaxChatFontScale = 1.5f;
     private const int ReportReasonMaxLength = 500;
     private const int ReportContextMaxLength = 1000;
 
@@ -215,6 +217,14 @@ public sealed class ZoneChatUi : WindowMediatorSubscriberBase
         if (!child)
             return;
 
+        var configuredFontScale = Math.Clamp(_chatConfigService.Current.ChatFontScale, MinChatFontScale, MaxChatFontScale);
+        var restoreFontScale = false;
+        if (Math.Abs(configuredFontScale - 1f) > 0.001f)
+        {
+            ImGui.SetWindowFontScale(configuredFontScale);
+            restoreFontScale = true;
+        }
+
         var drawList = ImGui.GetWindowDrawList();
         var windowPos = ImGui.GetWindowPos();
         var windowSize = ImGui.GetWindowSize();
@@ -284,6 +294,11 @@ public sealed class ZoneChatUi : WindowMediatorSubscriberBase
             ImGui.SetScrollHereY(1f);
             _scrollToBottom = false;
         }
+
+        if (restoreFontScale)
+        {
+            ImGui.SetWindowFontScale(1f);
+        }
     }
 
     private void DrawInput(ChatChannelSnapshot channel)
@@ -1122,6 +1137,25 @@ public sealed class ZoneChatUi : WindowMediatorSubscriberBase
             ImGui.SetTooltip("Toggles the timestamp prefix on messages.");
         }
 
+        var fontScale = Math.Clamp(chatConfig.ChatFontScale, MinChatFontScale, MaxChatFontScale);
+        var fontScaleChanged = ImGui.SliderFloat("Message font scale", ref fontScale, MinChatFontScale, MaxChatFontScale, "%.2fx");
+        var resetFontScale = ImGui.IsItemClicked(ImGuiMouseButton.Right);
+        if (resetFontScale)
+        {
+            fontScale = 1.0f;
+            fontScaleChanged = true;
+        }
+
+        if (fontScaleChanged)
+        {
+            chatConfig.ChatFontScale = fontScale;
+            _chatConfigService.Save();
+        }
+        if (ImGui.IsItemHovered())
+        {
+            ImGui.SetTooltip("Adjusts the scale of chat message text.\nRight-click to reset.");
+        }
+
         var windowOpacity = Math.Clamp(chatConfig.ChatWindowOpacity, MinWindowOpacity, MaxWindowOpacity);
         var opacityChanged = ImGui.SliderFloat("Window transparency", ref windowOpacity, MinWindowOpacity, MaxWindowOpacity, "%.2f");
         var resetOpacity = ImGui.IsItemClicked(ImGuiMouseButton.Right);