Struct TerminalCapabilities 

pub struct TerminalCapabilities {
    pub color_support: ColorSupport,
    pub bracketed_paste: bool,
    pub mouse: bool,
    pub cursor_style: bool,
}

Terminal capabilities that influence how MinUI should render.

Fields

color_support: ColorSupport

Color fidelity supported by the terminal.

bracketed_paste: bool

Whether bracketed paste mode is expected to work.

Note: MinUI enables bracketed paste when initializing TerminalWindow. This flag is purely informational for apps that want to display/adjust UI.

mouse: bool

Whether mouse capture/reporting is expected to work.

Note: MinUI enables mouse capture when initializing TerminalWindow. This flag is informational, as terminals can still vary.

cursor_style: bool

Whether changing the cursor style (block/bar/underline) is likely supported.

MinUI does not currently expose cursor styling as a stable public API.

Implementations

impl TerminalCapabilities

pub fn detect() -> Self

Best-effort autodetection using environment variables.

This intentionally avoids heavy dependencies and terminfo parsing.

Heuristics:

• COLORTERM=truecolor or COLORTERM=24bit => Truecolor
• TERM contains -truecolor => Truecolor
• TERM contains 256color => Ansi256
• otherwise => Ansi16

Notes:

• Many terminals do support truecolor even when TERM doesn’t advertise it.
• Remote shells and tmux/screen can mask capabilities unless configured.

pub fn downgrade_pair(self, pair: ColorPair) -> ColorPair

Returns a copy of pair with colors downgraded to this terminal’s capabilities.

This is the main “policy hook” for MinUI rendering: widgets/apps can request rich colors, and MinUI will degrade to what the terminal can likely display.

pub fn downgrade_color(self, c: Color) -> Color

Downgrade a single Color to match self.color_support.

Rules:

• Reset/Transparent are preserved
• Named ANSI colors are preserved
• AnsiValue(n) is preserved unless target is Ansi16 (then approximated)
• Rgb{..} is preserved only for Truecolor; otherwise approximated

Trait Implementations

impl Clone for TerminalCapabilities

fn clone(&self) -> TerminalCapabilities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TerminalCapabilities

impl Debug for TerminalCapabilities

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TerminalCapabilities

fn default() -> Self

Returns the “default value” for a type.

impl Eq for TerminalCapabilities

impl PartialEq for TerminalCapabilities

fn eq(&self, other: &TerminalCapabilities) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TerminalCapabilities