Launcher improvements (#571)

* Make launcher window use dark mode

Co-Authored-By: fed <58637860+fedddddd@users.noreply.github.com>

* Launcher improvements

* Fixed Discord link
* Embedded custom font
* CSS improvements
* Optimization for images (file size reduction)

---------

Co-authored-by: fed <58637860+fedddddd@users.noreply.github.com>

src/client/launcher/window.cpp

@@ -3,6 +3,10 @@
 
 #include <utils/nt.hpp>
 
+#ifndef DWMWA_USE_IMMERSIVE_DARK_MODE
+#define DWMWA_USE_IMMERSIVE_DARK_MODE 20
+#endif
+
 std::mutex window::mutex_;
 std::vector<window*> window::windows_;
 
@@ -37,6 +41,10 @@ void window::create(const std::string& title, const int width, const int height,
 	this->handle_ = CreateWindowExA(NULL, this->wc_.lpszClassName, title.data(), flags, x, y, width, height, nullptr,
 	                                nullptr, this->wc_.hInstance, this);
 
+	BOOL value = TRUE;
+	DwmSetWindowAttribute(this->handle_, 
+		DWMWA_USE_IMMERSIVE_DARK_MODE, &value, sizeof(value));
+
 	SendMessageA(this->handle_, WM_DPICHANGED, 0, 0);
 }
 

src/client/launcher/window.hpp

@@ -1,4 +1,5 @@
 #pragma once
+#pragma comment (lib, "dwmapi.lib")
 
 #define WM_KILL_WINDOW (WM_USER+0)
 

src/client/std_include.hpp

@@ -49,6 +49,7 @@
 #include <iphlpapi.h>
 #include <wincrypt.h>
 #include <shellscalingapi.h>
+#include <dwmapi.h>
 
 // min and max is required by gdi, therefore NOMINMAX won't work
 #ifdef max