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//! Hikari Menu Input
const efi = @import("../efi/efi.zig");
pub const InputAction = enum {
none,
up,
down,
select,
cancel,
page_up,
page_down,
home,
end,
};
pub const Input = struct {
system_table: *efi.services.SystemTable,
pub fn initialize(system_table: *efi.services.SystemTable) Input {
return Input{
.system_table = system_table,
};
}
pub fn poll(self: *Input) InputAction {
var key: efi.types.input.InputKey = undefined;
const status = self.system_table.console_input.read_key_stroke(
self.system_table.console_input,
&key,
);
if (efi.types.is_error(status)) {
return .none;
}
if (key.scan_code != 0) {
return switch (key.scan_code) {
efi.constants.keyboard.scan_up => .up,
efi.constants.keyboard.scan_down => .down,
efi.constants.keyboard.scan_escape => .cancel,
efi.constants.keyboard.scan_page_up => .page_up,
efi.constants.keyboard.scan_page_down => .page_down,
efi.constants.keyboard.scan_home => .home,
efi.constants.keyboard.scan_end => .end,
else => .none,
};
}
if (key.unicode_char != 0) {
return switch (key.unicode_char) {
'\r', ' ' => .select,
'j', 'J' => .down,
'k', 'K' => .up,
'q', 'Q' => .cancel,
else => .none,
};
}
return .none;
}
pub fn wait_for_key(self: *Input) void {
var index: usize = 0;
const events = [_]efi.types.Event{self.system_table.console_input.wait_for_key};
_ = self.system_table.boot_services.wait_for_event(1, &events, &index);
}
pub fn wait_for_action(self: *Input) InputAction {
while (true) {
const action = self.poll();
if (action != .none) {
return action;
}
self.wait_for_key();
}
}
pub fn clear_input_buffer(self: *Input) void {
while (self.poll() != .none) {}
}
};
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