/**
 * The event.key values corresponding to each keyboard control
 *
 * Useful tool to get the keys: https://www.toptal.com/developers/keycode
 * @internal
 */
export declare const enum KeyboardControls {
    LEFT_ARROW = "ArrowLeft",
    RIGHT_ARROW = "ArrowRight",
    UP_ARROW = "ArrowUp",
    DOWN_ARROW = "ArrowDown",
    ENTER = "Enter",
    ESCAPE = "Escape",
    CMD = "Meta",
    CONTROL = "Control",
    ALT = "Alt",
    SPACE = " ",
    KEYBOARD_EXPLORE_MODE_SHORTCUT = "e",
    KEYBOARD_EXPLORE_MODE_SHORTCUT_ALTERNATIVE = "E",
    KEYBOARD_PAN_MODE_SHORTCUT = "p",
    KEYBOARD_PAN_MODE_SHORTCUT_ALTERNATIVE = "P",
    KEYBOARD_ZOOM_MODE_SHORTCUT = "z",
    KEYBOARD_ZOOM_MODE_SHORTCUT_ALTERNATIVE = "Z",
    KEYBOARD_RESET_SHORTCUT = "r",
    KEYBOARD_RESET_SHORTCUT_ALTERNATIVE = "R"
}
export declare const MIN_ZOOM_STEP = 10;
export declare const ZOOM_FACTOR = 0.1;
export declare const SMALL_STEP_FACTOR = 0.01;
export declare const LARGE_STEP_FACTOR = 0.02;
export declare const SELECTION_EDGE_THRESHOLD = 2;