LibVT+Terminal: Add color scheme support

This commit introduces color scheme support to Terminal. These are found
in `/res/terminal_colors` and the default color scheme can be set in
`~/.config/Terminal.ini`. Furthermore, a combo box is added for
setting the color scheme at runtime.

The previously used default color scheme has been added to
`/res/terminal-colors/Default.ini`.

To make the implementation more compatible with other color schemes,
`TerminalWidget` now supports overriding the default foreground and
background colors.

1 files changed, 10 insertions, 0 deletions

diff --git a/Userland/Libraries/LibVT/TerminalWidget.h b/Userland/Libraries/LibVT/TerminalWidget.h
index 39d8a7f2e9..5d4307e651 100644
--- a/Userland/Libraries/LibVT/TerminalWidget.h
+++ b/Userland/Libraries/LibVT/TerminalWidget.h
@@ -81,6 +81,8 @@ public:
     void paste();
     void clear_including_history();
 
+    const StringView color_scheme_name() const { return m_color_scheme_name; }
+
     Function<void(const StringView&)> on_title_change;
     Function<void(const Gfx::IntSize&)> on_terminal_size_change;
     Function<void()> on_command_exit;
@@ -91,6 +93,8 @@ public:
 
     void set_font_and_resize_to_fit(const Gfx::Font&);
 
+    void set_color_scheme(const StringView&);
+
 private:
     // ^GUI::Widget
     virtual void event(Core::Event&) override;
@@ -157,6 +161,12 @@ private:
     // Snapshot of m_hovered_href when opening a context menu for a hyperlink.
     String m_context_menu_href;
 
+    unsigned m_colors[256];
+    Gfx::Color m_default_foreground_color;
+    Gfx::Color m_default_background_color;
+
+    String m_color_scheme_name;
+
     BellMode m_bell_mode { BellMode::Visible };
     bool m_alt_key_held { false };
     bool m_rectangle_selection { false };