Decal Placer + add new decals for mapping (#6548)

* abomination

* okay its less unabashedly garbage now

* other UI changes

* its britney bitch

* proper greyscale full/half/quarter tiles

* misc cleanup

* rsi

* Add a palette system. It's Kara's problem now.

* oops

* a

* Departmental palette alpha tweaks

* oopy

* so true

* Update Content.Shared/Decals/ColorPalettePrototype.cs

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

* fixes for that

* neutral light color and new warning lines

* dirt

* checkerboards

* oop

Co-authored-by: moonheart08 <moonheart08@users.noreply.github.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Client/Decals/UI/DecalPlacerWindow.xaml.cs

@@ -0,0 +1,167 @@
+using Content.Client.Stylesheets;
+using Content.Shared.Decals;
+using Robust.Client.AutoGenerated;
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Client.Utility;
+using Robust.Shared.Prototypes;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.Decals.UI;
+
+[GenerateTypedNameReferences]
+public sealed partial class DecalPlacerWindow : DefaultWindow
+{
+    private readonly IPrototypeManager _prototypeManager;
+    private readonly DecalPlacementSystem _decalPlacementSystem;
+
+    public FloatSpinBox RotationSpinBox;
+
+    private Dictionary<string, Texture>? _decals;
+    private string? _selected;
+    private Color _color = Color.White;
+    private bool _useColor;
+    private bool _snap;
+    private float _rotation;
+    private bool _cleanable;
+    private int _zIndex;
+
+    public DecalPlacerWindow(IPrototypeManager prototypeManager)
+    {
+        RobustXamlLoader.Load(this);
+
+        _prototypeManager = prototypeManager;
+        _decalPlacementSystem = EntitySystem.Get<DecalPlacementSystem>();
+
+        // This needs to be done in C# so we can have custom stuff passed in the constructor
+        // and thus have a proper step size
+        RotationSpinBox = new FloatSpinBox(90.0f, 0)
+        {
+            HorizontalExpand = true
+        };
+        SpinBoxContainer.AddChild(RotationSpinBox);
+
+        Search.OnTextChanged += _ => RefreshList();
+        ColorPicker.OnColorPicked += color =>
+        {
+            _color = color;
+            UpdateDecalPlacementInfo();
+            RefreshList();
+        };
+        RotationSpinBox.OnValueChanged += args =>
+        {
+            _rotation = args.Value;
+            UpdateDecalPlacementInfo();
+        };
+        EnableColor.OnToggled += args =>
+        {
+            _useColor = args.Pressed;
+            UpdateDecalPlacementInfo();
+            RefreshList();
+        };
+        EnableSnap.OnToggled += args =>
+        {
+            _snap = args.Pressed;
+            UpdateDecalPlacementInfo();
+        };
+        EnableCleanable.OnToggled += args =>
+        {
+            _cleanable = args.Pressed;
+            UpdateDecalPlacementInfo();
+        };
+        // i have to make this a member method for some reason and i have no idea why its only for spinboxes
+        ZIndexSpinBox.ValueChanged += ZIndexSpinboxChanged;
+
+        Populate();
+    }
+
+    private void UpdateDecalPlacementInfo()
+    {
+        if (_selected is null)
+            return;
+
+        var color = _useColor ? _color : Color.White;
+        _decalPlacementSystem.UpdateDecalInfo(_selected, color, _rotation, _snap, _zIndex, _cleanable);
+    }
+
+    private void RefreshList()
+    {
+        // Clear
+        Grid.RemoveAllChildren();
+        if (_decals == null) return;
+
+        var filter = Search.Text;
+        foreach (var (decal, tex) in _decals)
+        {
+            if (!decal.ToLowerInvariant().Contains(filter.ToLowerInvariant()))
+                continue;
+
+            var button = new TextureButton
+            {
+                TextureNormal = tex,
+                Name = decal,
+                ToolTip = decal,
+                Modulate = _useColor ? _color : Color.White
+            };
+            button.OnPressed += ButtonOnPressed;
+            if (_selected == decal)
+            {
+                var panelContainer = new PanelContainer
+                {
+                    PanelOverride = new StyleBoxFlat
+                    {
+                        BackgroundColor = StyleNano.ButtonColorDefault
+                    },
+                    Children =
+                    {
+                        button
+                    }
+                };
+                Grid.AddChild(panelContainer);
+            }
+            else
+                Grid.AddChild(button);
+        }
+    }
+
+    private void ZIndexSpinboxChanged(object? sender, ValueChangedEventArgs e)
+    {
+        _zIndex = e.Value;
+        UpdateDecalPlacementInfo();
+    }
+
+    private void ButtonOnPressed(ButtonEventArgs obj)
+    {
+        if (obj.Button.Name == null) return;
+
+        _selected = obj.Button.Name;
+        UpdateDecalPlacementInfo();
+        RefreshList();
+    }
+
+    public void Populate()
+    {
+        var prototypes = _prototypeManager.EnumeratePrototypes<DecalPrototype>();
+        _decals = new Dictionary<string, Texture>();
+        foreach (var decalPrototype in prototypes)
+        {
+            _decals.Add(decalPrototype.ID, decalPrototype.Sprite.Frame0());
+        }
+
+        RefreshList();
+    }
+
+    protected override void Opened()
+    {
+        base.Opened();
+        _decalPlacementSystem.SetActive(true);
+    }
+
+    public override void Close()
+    {
+        base.Close();
+        _decalPlacementSystem.SetActive(false);
+    }
+}