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Source/Editor/Tools/Terrain/PaintTab.cs

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+using FlaxEditor.CustomEditors;
+using FlaxEditor.GUI.Tabs;
+using FlaxEngine;
+using FlaxEngine.GUI;
+
+namespace FlaxEditor.Tools.Terrain
+{
+    /// <summary>
+    /// Carve tab related to terrain painting. Allows to modify terrain splatmap using brush.
+    /// </summary>
+    /// <seealso cref="Tab" />
+    [HideInEditor]
+    public class PaintTab : Tab
+    {
+        /// <summary>
+        /// The object for paint mode settings adjusting via Custom Editor.
+        /// </summary>
+        private sealed class ProxyObject
+        {
+            private readonly PaintTerrainGizmoMode _mode;
+            private object _currentMode, _currentBrush;
+
+            public ProxyObject(PaintTerrainGizmoMode mode)
+            {
+                _mode = mode;
+                SyncData();
+            }
+
+            public void SyncData()
+            {
+                _currentMode = _mode.CurrentMode;
+                _currentBrush = _mode.CurrentBrush;
+            }
+
+            [EditorOrder(0), EditorDisplay("Tool"), Tooltip("Paint tool mode to use.")]
+            public PaintTerrainGizmoMode.ModeTypes ToolMode
+            {
+                get => _mode.ToolModeType;
+                set => _mode.ToolModeType = value;
+            }
+
+            [EditorOrder(100), EditorDisplay("Tool", EditorDisplayAttribute.InlineStyle)]
+            public object Mode
+            {
+                get => _currentMode;
+                set { }
+            }
+
+            [EditorOrder(1000), EditorDisplay("Brush"), Tooltip("Paint brush type to use.")]
+            public PaintTerrainGizmoMode.BrushTypes BrushTypeType
+            {
+                get => _mode.ToolBrushType;
+                set => _mode.ToolBrushType = value;
+            }
+
+            [EditorOrder(1100), EditorDisplay("Brush", EditorDisplayAttribute.InlineStyle)]
+            public object Brush
+            {
+                get => _currentBrush;
+                set { }
+            }
+        }
+
+        private readonly ProxyObject _proxy;
+        private readonly CustomEditorPresenter _presenter;
+
+        /// <summary>
+        /// The parent carve tab.
+        /// </summary>
+        public readonly CarveTab CarveTab;
+
+        /// <summary>
+        /// The related sculp terrain gizmo.
+        /// </summary>
+        public readonly PaintTerrainGizmoMode Gizmo;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PaintTab"/> class.
+        /// </summary>
+        /// <param name="tab">The parent tab.</param>
+        /// <param name="gizmo">The related gizmo.</param>
+        public PaintTab(CarveTab tab, PaintTerrainGizmoMode gizmo)
+        : base("Paint")
+        {
+            CarveTab = tab;
+            Gizmo = gizmo;
+            Gizmo.ToolModeChanged += OnToolModeChanged;
+            _proxy = new ProxyObject(gizmo);
+
+            // Main panel
+            var panel = new Panel(ScrollBars.Both)
+            {
+                AnchorPreset = AnchorPresets.StretchAll,
+                Offsets = Margin.Zero,
+                Parent = this
+            };
+
+            // Options editor
+            // TODO: use editor undo for changing brush options
+            var editor = new CustomEditorPresenter(null);
+            editor.Panel.Parent = panel;
+            editor.Select(_proxy);
+            _presenter = editor;
+        }
+
+        private void OnToolModeChanged()
+        {
+            _presenter.BuildLayoutOnUpdate();
+        }
+
+        /// <inheritdoc />
+        public override void Update(float deltaTime)
+        {
+            if (_presenter.BuildOnUpdate)
+            {
+                _proxy.SyncData();
+            }
+
+            base.Update(deltaTime);
+        }
+    }
+}