enhancement: add a default Dark theme (fixes #1639) (#1640)

Author: midwan

src/osdep/amiberry.cpp

@@ -4156,6 +4156,7 @@ std::string get_plugins_directory(bool portable_mode)
 extern void save_theme(const std::string& theme_filename);
 extern void load_theme(const std::string& theme_filename);
 extern void load_default_theme();
+extern void load_default_dark_theme();
 
 void create_missing_amiberry_folders()
 {
@@ -4340,6 +4341,13 @@ void create_missing_amiberry_folders()
 		load_default_theme();
 		save_theme("Default.theme");
 	}
+
+	default_theme_file = themes_path + "Dark.theme";
+	if (!my_existsfile2(default_theme_file.c_str()))
+	{
+		load_default_dark_theme();
+		save_theme("Dark.theme");
+	}
 }
 
 static bool locate_amiberry_conf(const bool portable_mode)

src/osdep/amiberry_gui.cpp

@@ -1946,6 +1946,19 @@ void load_default_theme()
 	gui_theme.foreground_color = { 0, 0, 0 };
 }
 
+void load_default_dark_theme()
+{
+	gui_theme.font_name = "AmigaTopaz.ttf";
+	gui_theme.font_size = 15;
+	gui_theme.font_color = { 200, 200, 200 };
+	gui_theme.base_color = { 32, 32, 37 };
+	gui_theme.selector_inactive = { 32, 32, 37 };
+	gui_theme.selector_active = { 50, 100, 200 };
+	gui_theme.selection_color = { 50, 100, 200 };
+	gui_theme.background_color = { 45, 45, 47 };
+	gui_theme.foreground_color = { 200, 200, 200 };
+}
+
 // Get the path to the system fonts
 std::string get_system_fonts_path()
 {

src/osdep/gui/gui_handling.h

@@ -436,6 +436,7 @@ extern std::vector<int> parse_color_string(const std::string& input);
 extern void save_theme(const std::string& theme_filename);
 extern void load_theme(const std::string& theme_filename);
 extern void load_default_theme();
+extern void load_default_dark_theme();
 extern void apply_theme();
 extern void apply_theme_extras();