add themes presets

src/GUI/Imgui.cpp

@@ -14,6 +14,7 @@ namespace Xash::GUI
 		ImGui::CreateContext();
 		ImGui::StyleColorsDark();
 		GetProcessesNames();
+		ApplyThemePreset();
 	}
 
 	void Imgui::InitWin32AndDX11(
@@ -91,4 +92,27 @@ namespace Xash::GUI
 			mProcessesNames.end()
 		);
 	}
+
+	void Imgui::ApplyThemePreset()
+	{
+		auto &imguiStyle = ImGui::GetStyle();
+		const auto &xashStyle = Settings::StyleSettings::GetInstance();
+
+		imguiStyle.Colors[ImGuiCol_WindowBg] = {
+			xashStyle.GetBackgroundColor().x, xashStyle.GetBackgroundColor().y,
+			xashStyle.GetBackgroundColor().z, xashStyle.GetBackgroundColor().w
+		};
+		imguiStyle.Colors[ImGuiCol_Text] = {
+			xashStyle.GetTextColor().x, xashStyle.GetTextColor().y,
+			xashStyle.GetTextColor().z, xashStyle.GetTextColor().w
+		};
+		imguiStyle.Colors[ImGuiCol_Border] = {
+			xashStyle.GetBorderColor().x, xashStyle.GetBorderColor().y,
+			xashStyle.GetBorderColor().z, xashStyle.GetBorderColor().w
+		};
+		imguiStyle.Colors[ImGuiCol_Button] = {
+			xashStyle.GetButtonColor().x, xashStyle.GetButtonColor().y,
+			xashStyle.GetButtonColor().z, xashStyle.GetButtonColor().w
+		};
+	}
 } // namespace Xash::GUI

src/GUI/Imgui.hpp

@@ -67,6 +67,9 @@ namespace Xash
 			// SETTINGS
 			void DrawSettingsPanel();
 
+			// Themes
+			void ApplyThemePreset();
+
 			Injector::ModInfos mModInfos;
 			std::size_t mSelectedProcessIndex = 0;
 			std::vector<std::string> mProcessesNames;

src/GUI/SettingsPanel.cpp

@@ -1,8 +1,10 @@
 #include <string>
+#include <functional>
 #include "imgui.h"
 #include "Imgui.hpp"
 #include "XashSettings.hpp"
 #include "StyleSettings.hpp"
+#include "ThemePresets.hpp"
 
 namespace Xash
 {
@@ -41,12 +43,50 @@ namespace Xash
 			);
 		}
 
+		// All theme presets with associated functions
+		std::unordered_map<std::string, std::function<void()>> colorPresets = {
+			{"Default", Themes::SetDefaultColors},
+			{"Arcade", Themes::SetArcadeColors},
+			{"BlackAndWhite", Themes::SetBlackAndWhiteColors},
+			{"Purple", Themes::SetPurpleColors},
+			{"Ocean", Themes::SetOceanColors}
+		};
+
+		static void SetColors(const std::string &presetName)
+		{
+			auto &style = Settings::StyleSettings::GetInstance();
+
+			auto preset = colorPresets.find(presetName);
+			if (preset != colorPresets.end())
+			{
+				preset->second();
+			}
+		}
+
+		static void ThemePresets(const std::function<void()>& ApplyThemePreset)
+		{
+			for (const auto &preset : colorPresets)
+			{
+				if (ImGui::Button(preset.first.c_str()))
+				{
+					SetColors(preset.first);
+					ApplyThemePreset();
+				}
+				ImGui::SameLine();
+			}
+		}
+
 		void Imgui::DrawSettingsPanel()
 		{
 			if (ImGui::CollapsingHeader("Custom Theme"))
 			{
 				customTheme();
 			}
+			if (ImGui::CollapsingHeader("Theme Presets"))
+			{
+				auto applyThemefunc = [this]() {ApplyThemePreset();};
+            	ThemePresets(applyThemefunc);
+			}
 		}
 	} // namespace GUI
 } // namespace Xash

src/settings/StyleSettings.hpp

@@ -42,10 +42,10 @@ namespace Xash
 			StyleSettings() = default;
 			~StyleSettings() = default;
 
-			Vector4 mBackgroundColor = {0.0f, 0.0f, 0.0f, 1.0f};
+			Vector4 mBackgroundColor = {0.088f, 0.084f, 0.098f, 1.0f};
 			Vector4 mTextColor = {1.0f, 1.0f, 1.0f, 1.0f};
-			Vector4 mBorderColor = {0.5f, 0.5f, 0.5f, 1.0f};
-			Vector4 mButtonColor = {0.2f, 0.8f, 0.2f, 1.0f};
+			Vector4 mBorderColor = {0.538f, 0.538f, 0.538f, 1.0f};
+			Vector4 mButtonColor = {0.321f, 0.112f, 0.734f, 1.0f};
 		};
 	} // namespace Settings
 } // namespace Xash

src/settings/ThemePresets.hpp

@@ -0,0 +1,58 @@
+#pragma once
+
+#include "StyleSettings.hpp"
+
+// Maybe soon, themes will be in a json file
+
+namespace Xash::Themes
+{
+	void SetArcadeColors()
+	{
+		auto &style = Settings::StyleSettings::GetInstance();
+
+		style.SetBackgroundColor({0.09f, 0.05f, 0.201f, 1.0f});
+		style.SetTextColor({1.0f, 1.0f, 1.0f, 1.0f});
+		style.SetBorderColor({1.0f, 0.0f, 1.0f, 1.0f});
+		style.SetButtonColor({0.05f, 0.860f, 0.780f, 1.0f});
+	}
+
+	void SetBlackAndWhiteColors()
+	{
+		auto &style = Settings::StyleSettings::GetInstance();
+
+		style.SetBackgroundColor({0.076f, 0.076f, 0.076f, 1.0f});
+		style.SetTextColor({0.8f, 0.8f, 0.8f, 1.0f});
+		style.SetBorderColor({0.5f, 0.5f, 0.5f, 1.0f});
+		style.SetButtonColor({0.3f, 0.3f, 0.3f, 1.0f});
+	}
+
+	void SetPurpleColors()
+	{
+		auto &style = Settings::StyleSettings::GetInstance();
+
+		style.SetBackgroundColor({0.185f, 0.138f, 0.310f, 1.0f});
+		style.SetTextColor({1.0f, 1.0f, 1.0f, 1.0f});
+		style.SetBorderColor({0.279f, 0.189f, 0.359f, 1.0f});
+		style.SetButtonColor({0.322f, 0.148f, 0.620f, 1.0f});
+	}
+
+	void SetOceanColors()
+	{
+		auto &style = Settings::StyleSettings::GetInstance();
+
+		style.SetBackgroundColor({0.0f, 0.2f, 0.4f, 1.0f});
+		style.SetTextColor({1.0f, 1.0f, 1.0f, 1.0f});
+		style.SetBorderColor({0.3f, 0.5f, 0.7f, 1.0f});
+		style.SetButtonColor({0.2f, 0.5f, 0.8f, 1.0f});
+	}
+
+	void SetDefaultColors()
+	{
+		auto &style = Settings::StyleSettings::GetInstance();
+
+		style.SetBackgroundColor({0.088f, 0.084f, 0.098f, 1.0f});
+		style.SetTextColor({1.0f, 1.0f, 1.0f, 1.0f});
+		style.SetBorderColor({0.538f, 0.538f, 0.538f, 1.0f});
+		style.SetButtonColor({0.321f, 0.112f, 0.734f, 1.0f});
+	}
+} // namespace Themes