add keepAspectRatio parameter to Layout Editor

addons/ui/CfgEventHandlers.hpp

@@ -20,6 +20,9 @@ class Extended_DisplayLoad_EventHandlers {
     class RscDisplayMultiplayerSetup {
         ADDON = QUOTE(_this call (uiNamespace getVariable 'FUNC(initDisplayMultiplayerSetup)'));
     };
+    class RscDisplayOptionsLayout {
+        ADDON = QUOTE(_this call (uiNamespace getVariable 'FUNC(initDisplayOptionsLayout)'));
+    };
     class RscDisplayPassword {
         ADDON = QUOTE(_this call (uiNamespace getVariable 'FUNC(initDisplayPassword)'));
     };

addons/ui/XEH_preStart.sqf

@@ -2,5 +2,6 @@
 
 PREP(initDisplayInterrupt);
 PREP(initDisplayMultiplayerSetup);
+PREP(initDisplayOptionsLayout);
 PREP(initDisplayPassword);
 PREP(initDisplayRemoteMissions);

addons/ui/fnc_initDisplayOptionsLayout.sqf

@@ -0,0 +1,68 @@
+#include "script_component.hpp"
+
+#define IDCBASE 12000
+
+params ["_display"];
+
+for "_idc" from IDCBASE to (IDCBASE + 99) do {
+    private _control = _display displayCtrl _idc;
+
+    private _fnc_keepAspectRatio = {
+        params ["_control"];
+        uiNamespace getVariable "RscDisplayOptionsLayout_data" select (ctrlIDC _control - IDCBASE) params ["_tagName", "_varName", "", "_canResize", "_grid"];
+        if !(_canResize) exitWith {};
+
+        private _config = configFile >> "CfgUIGrids" >> _tagName >> "Variables" >> _varName;
+        private _keepAspectRatio = getNumber (_config >> "keepAspectRatio") == 1;
+        if !(_keepAspectRatio) exitWith {};
+
+        private _varBase = _tagName + "_" + _varName + "_";
+        _grid params ["_pos", "_gridW", "_gridH"];
+        _pos params ["_posX", "_posY", "_posW", "_posH"];
+
+        if (_posX isEqualType "") then {_posX = call compile _posX};
+        if (_posY isEqualType "") then {_posY = call compile _posY};
+        if (_posW isEqualType "") then {_posW = call compile _posW};
+        if (_posH isEqualType "") then {_posH = call compile _posH};
+
+        private _aspectRatio = _posW/_posH;
+
+        private _posXTemp = uiNamespace getVariable [_varBase + "X", _posX];
+        private _posYTemp = uiNamespace getVariable [_varBase + "Y", _posY];
+        private _posWTemp = uiNamespace getVariable [_varBase + "W", _posW];
+        private _posHTemp = uiNamespace getVariable [_varBase + "H", _posH];
+
+        if (_posXTemp isEqualType "") then {_posXTemp = call compile _posXTemp};
+        if (_posYTemp isEqualType "") then {_posYTemp = call compile _posYTemp};
+        if (_posWTemp isEqualType "") then {_posWTemp = call compile _posWTemp};
+        if (_posHTemp isEqualType "") then {_posHTemp = call compile _posHTemp};
+
+        private _aspectRatioTemp = _posWTemp/_posHTemp;
+
+        if (_aspectRatio != _aspectRatioTemp) then {
+            // correct aspect ratio
+            _posHTemp = _posWTemp/_aspectRatio;
+
+            // update values
+            uiNamespace setVariable [_varBase + "X", _posXTemp];
+            uiNamespace setVariable [_varBase + "Y", _posYTemp];
+            uiNamespace setVariable [_varBase + "W", _posWTemp];
+            uiNamespace setVariable [_varBase + "H", _posHTemp];
+
+            // apply values
+            private _script = _control getVariable [QGVAR(setPos), scriptNull];
+            terminate _script;
+            _script = [_control, [_posXTemp, _posYTemp, _posWTemp, _posHTemp]] spawn {
+                isNil {
+                    params ["_control", "_posTemp"];
+                    _control ctrlSetPosition _posTemp;
+                    _control ctrlCommit 0;
+                };
+            };
+            _control setVariable [QGVAR(setPos), _script];
+        };
+    };
+
+    _control ctrlAddEventHandler ["MouseMoving", _fnc_keepAspectRatio];
+    _control ctrlAddEventHandler ["MouseHolding", _fnc_keepAspectRatio];
+};