Input field caret

LazyDuchess · Jun 21, 2024 · 47fa459 · 47fa459
1 parent e37d997
commit 47fa459
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Showing 4 changed files with 289 additions and 221 deletions.
diff --git a/Assets/Scenes/Tests/SkiaUITest.unity b/Assets/Scenes/Tests/SkiaUITest.unity
diff --git a/Assets/Scripts/OpenTS2/Engine/Tests/MXFFontTest.cs b/Assets/Scripts/OpenTS2/Engine/Tests/MXFFontTest.cs
@@ -15,10 +15,6 @@ public class MXFFontTest : MonoBehaviour
     {
         public string BaseGameFontToUse = "";
         public SkiaLabel Label;
-        public RectTransform Selector;
-        public SkiaLabel SelectableLabel;
-        public int SelectedCharacter = 0;
-        private int _previousCharacter = 0;
 
         private void Start()
         {
@@ -28,18 +24,5 @@ private void Start()
             var font = new SkiaFont(mxf.DecodedData);
             Label.Font = font;
         }
-
-        private void Update()
-        {
-            var rect = SelectableLabel.GetCharacterRect(SelectedCharacter);
-            Selector.anchoredPosition = new Vector2(rect.Rect.x, rect.Rect.y);
-            Selector.sizeDelta = new Vector2(rect.Rect.width, rect.Rect.height);
-            Selector.gameObject.SetActive(!rect.OutOfBounds);
-            if (SelectedCharacter != _previousCharacter)
-            {
-                _previousCharacter = SelectedCharacter;
-                Debug.Log($"Selecting {SelectableLabel.ParsedText.OriginalText[SelectedCharacter]}");
-            }
-        }
     }
 }
diff --git a/Assets/Scripts/OpenTS2/UI/Skia/SkiaInputField.cs b/Assets/Scripts/OpenTS2/UI/Skia/SkiaInputField.cs
@@ -3,12 +3,82 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using UnityEditor.Experimental.GraphView;
+using UnityEngine;
 using UnityEngine.UI;
 
 namespace OpenTS2.UI.Skia
 {
     public class SkiaInputField : Selectable
     {
+        private bool Selected => true;
+        [SerializeField]
+        private RectTransform _caret;
+        [SerializeField]
+        private SkiaLabel _label;
 
+        [SerializeField]
+        private int _selectedCharacter = 0;
+
+        private void Update()
+        {
+            if (!Application.isPlaying) return;
+            SelectedUpdate();
+        }
+
+        private void SelectedUpdate()
+        {
+            if (Input.GetKeyDown(KeyCode.LeftArrow))
+                MoveCaretLeft();
+            if (Input.GetKeyDown(KeyCode.RightArrow))
+                MoveCaretRight();
+
+            if (Input.GetKeyDown(KeyCode.Backspace))
+            {
+                if (_selectedCharacter >= 0)
+                {
+                    var strBuilder = new StringBuilder(_label.Text);
+                    strBuilder.Remove(_selectedCharacter, 1);
+                    _label.Text = strBuilder.ToString();
+                    MoveCaretLeft();
+                }
+            }
+
+            ValidateSelection();
+            UpdateCaretPosition();
+        }
+
+        private void MoveCaretLeft()
+        {
+            _selectedCharacter--;
+            if (_selectedCharacter < -1)
+            {
+                _selectedCharacter = -1;
+            }
+        }
+
+        private void MoveCaretRight()
+        {
+            _selectedCharacter++;
+            if (_selectedCharacter >= _label.Text.Length)
+                _selectedCharacter = _label.Text.Length - 1;
+        }
+
+        private void UpdateCaretPosition()
+        {
+            _caret.sizeDelta = new Vector2(1, _label.FontSize);
+            if (_selectedCharacter < 0)
+            {
+                _caret.anchoredPosition = new Vector2(0f, 0f);
+                return;
+            }
+            var rect = _label.GetCharacterRect(_selectedCharacter);
+            _caret.anchoredPosition = new Vector2(rect.Rect.x + rect.Rect.width, rect.Rect.y);
+        }
+
+        private void ValidateSelection()
+        {
+            _selectedCharacter = Mathf.Clamp(_selectedCharacter, -1, _label.Text.Length - 1);
+        }
     }
 }
diff --git a/Assets/Scripts/OpenTS2/UI/Skia/SkiaLabel.cs b/Assets/Scripts/OpenTS2/UI/Skia/SkiaLabel.cs
@@ -111,7 +111,7 @@ public int FontSize
         {
             get
             {
-                return FontSize;
+                return m_FontSize;
             }
 
             set
@@ -419,6 +419,11 @@ private void Render()
             _texture.LoadRawTextureData(pixMap.GetPixels(), pixMap.RowBytes * pixMap.Height);
             _texture.Apply(false, true);
         }
+        public int GetTextCharIndexForLineChar(int lineIndex, int c)
+        {
+            var line = ParsedText.Lines[lineIndex];
+            return c + line.BeginIndex;
+        }
 
         private void ParseText(SKImageInfo imageInfo)
         {
@@ -506,7 +511,12 @@ private void ParseText(SKImageInfo imageInfo)
             _parsedText = parsedText;
         }
 
-        private float GetLineY(int line)
+        public float GetLineLength(int line)
+        {
+            return _skPaint.MeasureText(_parsedText.Lines[line].Text);
+        }
+
+        public float GetLineY(int line)
         {
             var height = PracticalHeight;
             var heightMiddle = height / 2f;