From bcb56492c4cab204b8b27d762586e4bdbcc6c074 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Wed, 15 Mar 2023 17:17:15 +0400
Subject: [PATCH] Allow larger scales on high-dpi screens.

---
 ui/style/style_core_scale.cpp | 12 ++++++++++++
 ui/style/style_core_scale.h   |  8 +++-----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/ui/style/style_core_scale.cpp b/ui/style/style_core_scale.cpp
index 9e0038f..b6be737 100644
--- a/ui/style/style_core_scale.cpp
+++ b/ui/style/style_core_scale.cpp
@@ -34,4 +34,16 @@ void SetScale(int scale) {
 	ScaleValue = scale;
 }
 
+int MaxScaleForRatio(int ratio) {
+	Expects(ratio > 0);
+
+	return std::max(kScaleMax / ratio, kScaleAlwaysAllowMax);
+}
+
+int CheckScale(int scale) {
+	return (scale == kScaleAuto)
+		? kScaleAuto
+		: std::clamp(scale, kScaleMin, MaxScaleForRatio(DevicePixelRatio()));
+}
+
 } // namespace style
diff --git a/ui/style/style_core_scale.h b/ui/style/style_core_scale.h
index 2fba205..f4b804e 100644
--- a/ui/style/style_core_scale.h
+++ b/ui/style/style_core_scale.h
@@ -19,6 +19,7 @@ inline constexpr auto kScaleAuto = 0;
 inline constexpr auto kScaleMin = 50;
 inline constexpr auto kScaleDefault = 100;
 inline constexpr auto kScaleMax = 300;
+inline constexpr auto kScaleAlwaysAllowMax = 200;
 
 [[nodiscard]] int DevicePixelRatio();
 void SetDevicePixelRatio(int ratio);
@@ -26,11 +27,8 @@ void SetDevicePixelRatio(int ratio);
 [[nodiscard]] int Scale();
 void SetScale(int scale);
 
-[[nodiscard]] inline int CheckScale(int scale) {
-	return (scale == kScaleAuto)
-		? kScaleAuto
-		: std::clamp(scale, kScaleMin, kScaleMax / DevicePixelRatio());
-}
+[[nodiscard]] int MaxScaleForRatio(int ratio);
+[[nodiscard]] int CheckScale(int scale);
 
 template <typename T>
 [[nodiscard]] inline T ConvertScale(T value, int scale) {