ACE3/addons/interaction/functions/fnc_showMouseHint.sqf

/*
 * Author: Garth de Wet (LH)
 * Shows the interaction helper text with the mouse buttons at the bottom middle of the screen
 *
 * Arguments:
 * 0: Left Click Text <STRING>
 * 1: Right Click Text <STRING>
 * 2: Scroll Text <STRING> (Optional)
 *
 * Return value:
 * None
 *
 * Example:
 * ["Place Explosive", "Cancel"] call ace_interaction_fnc_showMouseHint
 *
 * Public: No
 */
#include "script_component.hpp"

#define GUI_GRID_W  (0.025)
#define GUI_GRID_H  (0.04)
private ["_leftClick", "_rightClick", "_scroll"];
_leftClick = _this select 0;
_rightClick = _this select 1;
_scroll = "";
if (count _this > 2) then {
    _scroll = _this select 2;
};

(QGVAR(InteractionHelper) call BIS_fnc_rscLayer) cutRsc [QGVAR(InteractionHelper), "PLAIN",0.5, false];
disableSerialization;
_display = uiNamespace getVariable ["ACE_Helper_Display", objNull];
if (isNull _display) exitWith{};

(_display displayCtrl 1000) ctrlSetText _leftClick;
(_display displayCtrl 1001) ctrlSetText _rightClick;

(_display displayCtrl 1000) ctrlShow (_leftClick != "");
(_display displayCtrl 1200) ctrlShow (_leftClick != "");
(_display displayCtrl 1001) ctrlShow (_rightClick != "");
(_display displayCtrl 1201) ctrlShow (_rightClick != "");

if (_scroll == "") exitWith {
    (_display displayCtrl 1002) ctrlShow false;
    (_display displayCtrl 1202) ctrlShow false;

    (_display displayCtrl 1001)    ctrlSetPosition [21 * GUI_GRID_W, 18 * GUI_GRID_H, 8 * GUI_GRID_W, 1.5 * GUI_GRID_H];
    (_display displayCtrl 1201)    ctrlSetPosition [20 * GUI_GRID_W, 18.5 * GUI_GRID_H, 1 * GUI_GRID_W, 1 * GUI_GRID_H];
    (_display displayCtrl 1001) ctrlCommit 0;
    (_display displayCtrl 1201) ctrlCommit 0;
};
(_display displayCtrl 1002) ctrlSetText _scroll;
showHUD false;