Refactors APC Window to XAML-UI (#4624)

Content.Client/Power/APC/UI/ApcMenu.xaml.cs

@@ -0,0 +1,109 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.IoC;
+using System;
+using Content.Client.Stylesheets;
+using Content.Shared.APC;
+using Robust.Client.Graphics;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Localization;
+using Robust.Shared.Maths;
+
+namespace Content.Client.Power.APC.UI
+{
+    [GenerateTypedNameReferences]
+    public partial class ApcMenu : SS14Window
+    {
+        public ApcMenu(ApcBoundUserInterface owner)
+        {
+            IoCManager.InjectDependencies(this);
+            RobustXamlLoader.Load(this);
+
+            BreakerButton.OnPressed += _ => owner.BreakerPressed();
+        }
+
+        public void UpdateState(BoundUserInterfaceState state)
+        {
+            var castState = (ApcBoundInterfaceState) state;
+
+            if (BreakerButton != null)
+            {
+                BreakerButton.Pressed = castState.MainBreaker;
+            }
+
+            if (ExternalPowerStateLabel != null)
+            {
+                switch (castState.ApcExternalPower)
+                {
+                    case ApcExternalPowerState.None:
+                        ExternalPowerStateLabel.Text = Loc.GetString("apc-menu-power-state-none");
+                        ExternalPowerStateLabel.SetOnlyStyleClass(StyleNano.StyleClassPowerStateNone);
+                        break;
+                    case ApcExternalPowerState.Low:
+                        ExternalPowerStateLabel.Text = Loc.GetString("apc-menu-power-state-low");
+                        ExternalPowerStateLabel.SetOnlyStyleClass(StyleNano.StyleClassPowerStateLow);
+                        break;
+                    case ApcExternalPowerState.Good:
+                        ExternalPowerStateLabel.Text = Loc.GetString("apc-menu-power-state-good");
+                        ExternalPowerStateLabel.SetOnlyStyleClass(StyleNano.StyleClassPowerStateGood);
+                        break;
+                    default:
+                        throw new ArgumentOutOfRangeException();
+                }
+            }
+
+            if (ChargeBar != null)
+            {
+                ChargeBar.Value = castState.Charge;
+                UpdateChargeBarColor(castState.Charge);
+
+                if (APCMenu != null)
+                {
+                    var chargePercentage = (castState.Charge / ChargeBar.MaxValue) * 100.0f;
+                    ChargePercentage.Text = " " + chargePercentage.ToString("0.00") + "%";
+                }
+            }
+        }
+
+        private void UpdateChargeBarColor(float charge)
+        {
+            if (ChargeBar == null)
+            {
+                return;
+            }
+
+            var normalizedCharge = charge / ChargeBar.MaxValue;
+
+            const float leftHue = 0.0f; // Red
+            const float middleHue = 0.066f; // Orange
+            const float rightHue = 0.33f; // Green
+            const float saturation = 1.0f; // Uniform saturation
+            const float value = 0.8f; // Uniform value / brightness
+            const float alpha = 1.0f; // Uniform alpha
+
+            // These should add up to 1.0 or your transition won't be smooth
+            const float leftSideSize = 0.5f; // Fraction of ChargeBar lerped from leftHue to middleHue
+            const float rightSideSize = 0.5f; // Fraction of ChargeBar lerped from middleHue to rightHue
+
+            float finalHue;
+            if (normalizedCharge <= leftSideSize)
+            {
+                normalizedCharge /= leftSideSize; // Adjust range to 0.0 to 1.0
+                finalHue = MathHelper.Lerp(leftHue, middleHue, normalizedCharge);
+            }
+            else
+            {
+                normalizedCharge = (normalizedCharge - leftSideSize) / rightSideSize; // Adjust range to 0.0 to 1.0.
+                finalHue = MathHelper.Lerp(middleHue, rightHue, normalizedCharge);
+            }
+
+            // Check if null first to avoid repeatedly creating this.
+            ChargeBar.ForegroundStyleBoxOverride ??= new StyleBoxFlat();
+
+            var foregroundStyleBoxOverride = (StyleBoxFlat) ChargeBar.ForegroundStyleBoxOverride;
+            foregroundStyleBoxOverride.BackgroundColor =
+                Color.FromHsv(new Vector4(finalHue, saturation, value, alpha));
+        }
+    }
+}