From 54a808c34a1defdafbb6e78ee9a88310ea90ae2c Mon Sep 17 00:00:00 2001
From: Ryan Foster <RytoEX@gmail.com>
Date: Sun, 21 Nov 2021 10:44:19 -0500
Subject: [PATCH] UI: Set Twitch Panel Dark Mode using OBS theme

Check if the current OBS theme is "Dark Mode"-esque and use that to
determine if the Twitch browser panel docks should use Twitch's Dark
Mode or not.
---
 UI/auth-twitch.cpp | 12 ++++++++++--
 UI/obs-app.cpp     |  2 ++
 UI/obs-app.hpp     |  2 ++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/UI/auth-twitch.cpp b/UI/auth-twitch.cpp
index eac2a72e6..13206ac83 100644
--- a/UI/auth-twitch.cpp
+++ b/UI/auth-twitch.cpp
@@ -229,7 +229,11 @@ void TwitchAuth::LoadUI()
 	chat->SetWidget(browser);
 	cef->add_force_popup_url(moderation_tools_url, chat.data());
 
-	script = "localStorage.setItem('twilight.theme', 1);";
+	if (App()->IsThemeDark()) {
+		script = "localStorage.setItem('twilight.theme', 1);";
+	} else {
+		script = "localStorage.setItem('twilight.theme', 0);";
+	}
 
 	const int twAddonChoice =
 		config_get_int(main->Config(), service(), "AddonChoice");
@@ -276,7 +280,11 @@ void TwitchAuth::LoadSecondaryUIPanes()
 	QSize size = main->frameSize();
 	QPoint pos = main->pos();
 
-	script = "localStorage.setItem('twilight.theme', 1);";
+	if (App()->IsThemeDark()) {
+		script = "localStorage.setItem('twilight.theme', 1);";
+	} else {
+		script = "localStorage.setItem('twilight.theme', 0);";
+	}
 	script += referrer_script1;
 	script += "https://www.twitch.tv/";
 	script += name;
diff --git a/UI/obs-app.cpp b/UI/obs-app.cpp
index f9d74edd8..782ff4e38 100644
--- a/UI/obs-app.cpp
+++ b/UI/obs-app.cpp
@@ -1121,6 +1121,8 @@ bool OBSApp::SetTheme(std::string name, std::string path)
 	setPalette(defaultPalette);
 	ParseExtraThemeData(path.c_str());
 	setStyleSheet(mpath);
+	QColor color = palette().text().color();
+	themeDarkMode = !(color.redF() < 0.5);
 
 	emit StyleChanged();
 	return true;
diff --git a/UI/obs-app.hpp b/UI/obs-app.hpp
index 6592d5bbc..a534f6d25 100644
--- a/UI/obs-app.hpp
+++ b/UI/obs-app.hpp
@@ -74,6 +74,7 @@ class OBSApp : public QApplication {
 private:
 	std::string locale;
 	std::string theme;
+	bool themeDarkMode = true;
 	ConfigFile globalConfig;
 	TextLookup textLookup;
 	QPointer<OBSMainWindow> mainWindow;
@@ -127,6 +128,7 @@ public:
 
 	inline const char *GetTheme() const { return theme.c_str(); }
 	bool SetTheme(std::string name, std::string path = "");
+	inline bool IsThemeDark() const { return themeDarkMode; };
 
 	inline lookup_t *GetTextLookup() const { return textLookup; }