Library/metadata/84/84a92b25f83d49b9bc132d206b370281

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using UnityEngine.TextCore;
using System.Collections.Generic;
using System.Linq;


namespace TMPro
{

    public class TMP_SpriteAsset : TMP_Asset
    {
        internal Dictionary<uint, int> m_UnicodeLookup;
        internal Dictionary<int, int> m_NameLookup;
        internal Dictionary<uint, int> m_GlyphIndexLookup;

        /// <summary>
        /// The version of the sprite asset class.
        /// Version 1.1.0 updates the asset data structure to be compatible with new font asset structure.
        /// </summary>
        public string version
        {
            get { return m_Version; }
            internal set { m_Version = value; }
        }
        [SerializeField]
        private string m_Version;

        // The texture which contains the sprites.
        public Texture spriteSheet;

        public List<TMP_SpriteCharacter> spriteCharacterTable
        {
            get
            {
                if (m_GlyphIndexLookup == null)
                    UpdateLookupTables();

                return m_SpriteCharacterTable;
            }
            internal set { m_SpriteCharacterTable = value; }
        }
        [SerializeField]
        private List<TMP_SpriteCharacter> m_SpriteCharacterTable = new List<TMP_SpriteCharacter>();


        public List<TMP_SpriteGlyph> spriteGlyphTable
        {
            get { return m_SpriteGlyphTable; }
            internal set { m_SpriteGlyphTable = value; }
        }
        [SerializeField]
        private List<TMP_SpriteGlyph> m_SpriteGlyphTable = new List<TMP_SpriteGlyph>();

        // List which contains the SpriteInfo for the sprites contained in the sprite sheet.
        public List<TMP_Sprite> spriteInfoList;

        /// <summary>
        /// Dictionary used to lookup the index of a given sprite based on a Unicode value.
        /// </summary>
        //private Dictionary<int, int> m_SpriteUnicodeLookup;


        /// <summary>
        /// List which contains the Fallback font assets for this font.
        /// </summary>
        [SerializeField]
        public List<TMP_SpriteAsset> fallbackSpriteAssets;

        internal bool m_IsSpriteAssetLookupTablesDirty = false;

        void Awake()
        {
            // Check version number of sprite asset to see if it needs to be upgraded.
            if (this.material != null && string.IsNullOrEmpty(m_Version))
                UpgradeSpriteAsset();
        }


        #if UNITY_EDITOR
        /// <summary>
        /// 
        /// </summary>
        void OnValidate()
        {
            //Debug.Log("Sprite Asset [" + name + "] has changed.");

            //UpdateLookupTables();

            //TMPro_EventManager.ON_SPRITE_ASSET_PROPERTY_CHANGED(true, this);
        }
        #endif


        /// <summary>
        /// Create a material for the sprite asset.
        /// </summary>
        /// <returns></returns>
        Material GetDefaultSpriteMaterial()
        {
            //isEditingAsset = true;
            ShaderUtilities.GetShaderPropertyIDs();

            // Add a new material
            Shader shader = Shader.Find("TextMeshPro/Sprite");
            Material tempMaterial = new Material(shader);
            tempMaterial.SetTexture(ShaderUtilities.ID_MainTex, spriteSheet);
            tempMaterial.hideFlags = HideFlags.HideInHierarchy;

            #if UNITY_EDITOR
            UnityEditor.AssetDatabase.AddObjectToAsset(tempMaterial, this);
            UnityEditor.AssetDatabase.ImportAsset(UnityEditor.AssetDatabase.GetAssetPath(this));
            #endif
            //isEditingAsset = false;

            return tempMaterial;
        }


        /// <summary>
        /// Function to update the sprite name and unicode lookup tables.
        /// This function should be called when a sprite's name or unicode value changes or when a new sprite is added.
        /// </summary>
        public void UpdateLookupTables()
        {
            //Debug.Log("Updating [" + this.name + "] Lookup tables.");

            // Check version number of sprite asset to see if it needs to be upgraded.
            if (this.material != null && string.IsNullOrEmpty(m_Version))
                UpgradeSpriteAsset();

            // Initialize / Clear glyph index lookup dictionary.
            if (m_GlyphIndexLookup == null)
                m_GlyphIndexLookup = new Dictionary<uint, int>();
            else
                m_GlyphIndexLookup.Clear();

            for (int i = 0; i < m_SpriteGlyphTable.Count; i++)
            {
                uint glyphIndex = m_SpriteGlyphTable[i].index;

                if (m_GlyphIndexLookup.ContainsKey(glyphIndex) == false)
                    m_GlyphIndexLookup.Add(glyphIndex, i);
            }

            if (m_NameLookup == null)
                m_NameLookup = new Dictionary<int, int>();
            else
                m_NameLookup.Clear();

            if (m_UnicodeLookup == null)
                m_UnicodeLookup = new Dictionary<uint, int>();
            else
                m_UnicodeLookup.Clear();

            for (int i = 0; i < m_SpriteCharacterTable.Count; i++)
            {
                int nameHashCode = m_SpriteCharacterTable[i].hashCode;

                if (m_NameLookup.ContainsKey(nameHashCode) == false)
                    m_NameLookup.Add(nameHashCode, i);

                uint unicode = m_SpriteCharacterTable[i].unicode;

                if (m_UnicodeLookup.ContainsKey(unicode) == false)
                    m_UnicodeLookup.Add(unicode, i);

                // Update glyph reference which is not serialized
                uint glyphIndex = m_SpriteCharacterTable[i].glyphIndex;

                if (m_GlyphIndexLookup.TryGetValue(glyphIndex, out int index))
                    m_SpriteCharacterTable[i].glyph = m_SpriteGlyphTable[index];
            }

            m_IsSpriteAssetLookupTablesDirty = false;
        }


        /// <summary>
        /// Function which returns the sprite index using the hashcode of the name
        /// </summary>
        /// <param name="hashCode"></param>
        /// <returns></returns>
        public int GetSpriteIndexFromHashcode(int hashCode)
        {
            if (m_NameLookup == null)
                UpdateLookupTables();

            if (m_NameLookup.TryGetValue(hashCode, out int index))
                return index;

            return -1;
        }


        /// <summary>
        /// Returns the index of the sprite for the given unicode value.
        /// </summary>
        /// <param name="unicode"></param>
        /// <returns></returns>
        public int GetSpriteIndexFromUnicode (uint unicode)
        {
            if (m_UnicodeLookup == null)
                UpdateLookupTables();

            if (m_UnicodeLookup.TryGetValue(unicode, out int index))
                return index;

            return -1;
        }


        /// <summary>
        /// Returns the index of the sprite for the given name.
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public int GetSpriteIndexFromName (string name)
        {
            if (m_NameLookup == null)
                UpdateLookupTables();

            int hashCode = TMP_TextUtilities.GetSimpleHashCode(name);

            return GetSpriteIndexFromHashcode(hashCode);
        }


        /// <summary>
        /// Used to keep track of which Sprite Assets have been searched.
        /// </summary>
        private static List<int> k_searchedSpriteAssets;

        /// <summary>
        /// Search through the given sprite asset and its fallbacks for the specified sprite matching the given unicode character.
        /// </summary>
        /// <param name="spriteAsset">The font asset to search for the given character.</param>
        /// <param name="unicode">The character to find.</param>
        /// <param name="glyph">out parameter containing the glyph for the specified character (if found).</param>
        /// <returns></returns>
        public static TMP_SpriteAsset SearchForSpriteByUnicode(TMP_SpriteAsset spriteAsset, uint unicode, bool includeFallbacks, out int spriteIndex)
        {
            // Check to make sure sprite asset is not null
            if (spriteAsset == null) { spriteIndex = -1; return null; }

            // Get sprite index for the given unicode
            spriteIndex = spriteAsset.GetSpriteIndexFromUnicode(unicode);
            if (spriteIndex != -1)
                return spriteAsset;

            // Initialize list to track instance of Sprite Assets that have already been searched.
            if (k_searchedSpriteAssets == null)
                k_searchedSpriteAssets = new List<int>();

            k_searchedSpriteAssets.Clear();

            // Get instance ID of sprite asset and add to list.
            int id = spriteAsset.GetInstanceID();
            k_searchedSpriteAssets.Add(id);

            // Search potential fallback sprite assets if includeFallbacks is true.
            if (includeFallbacks && spriteAsset.fallbackSpriteAssets != null && spriteAsset.fallbackSpriteAssets.Count > 0)
                return SearchForSpriteByUnicodeInternal(spriteAsset.fallbackSpriteAssets, unicode, includeFallbacks, out spriteIndex);

            // Search default sprite asset potentially assigned in the TMP Settings.
            if (includeFallbacks && TMP_Settings.defaultSpriteAsset != null)
                return SearchForSpriteByUnicodeInternal(TMP_Settings.defaultSpriteAsset, unicode, includeFallbacks, out spriteIndex);

            spriteIndex = -1;
            return null;
        }


        /// <summary>
        /// Search through the given list of sprite assets and fallbacks for a sprite whose unicode value matches the target unicode.
        /// </summary>
        /// <param name="spriteAssets"></param>
        /// <param name="unicode"></param>
        /// <param name="includeFallbacks"></param>
        /// <param name="spriteIndex"></param>
        /// <returns></returns>
        private static TMP_SpriteAsset SearchForSpriteByUnicodeInternal(List<TMP_SpriteAsset> spriteAssets, uint unicode, bool includeFallbacks, out int spriteIndex)
        {
            for (int i = 0; i < spriteAssets.Count; i++)
            {
                TMP_SpriteAsset temp = spriteAssets[i];
                if (temp == null) continue;

                int id = temp.GetInstanceID();

                // Skip over the fallback sprite asset if it has already been searched.
                if (k_searchedSpriteAssets.Contains(id)) continue;

                // Add to list of font assets already searched.
                k_searchedSpriteAssets.Add(id);

                temp = SearchForSpriteByUnicodeInternal(temp, unicode, includeFallbacks, out spriteIndex);

                if (temp != null)
                    return temp;
            }

            spriteIndex = -1;
            return null;
        }


        /// <summary>
        /// Search the given sprite asset and fallbacks for a sprite whose unicode value matches the target unicode.
        /// </summary>
        /// <param name="spriteAsset"></param>
        /// <param name="unicode"></param>
        /// <param name="includeFallbacks"></param>
        /// <param name="spriteIndex"></param>
        /// <returns></returns>
        private static TMP_SpriteAsset SearchForSpriteByUnicodeInternal(TMP_SpriteAsset spriteAsset, uint unicode, bool includeFallbacks, out int spriteIndex)
        {
            // Get sprite index for the given unicode
            spriteIndex = spriteAsset.GetSpriteIndexFromUnicode(unicode);
            if (spriteIndex != -1)
                return spriteAsset;

            if (includeFallbacks && spriteAsset.fallbackSpriteAssets != null && spriteAsset.fallbackSpriteAssets.Count > 0)
                return SearchForSpriteByUnicodeInternal(spriteAsset.fallbackSpriteAssets, unicode, includeFallbacks, out spriteIndex);

            spriteIndex = -1;
            return null;
        }


        /// <summary>
        /// Search the given sprite asset and fallbacks for a sprite whose hash code value of its name matches the target hash code.
        /// </summary>
        /// <param name="spriteAsset">The Sprite Asset to search for the given sprite whose name matches the hashcode value</param>
        /// <param name="hashCode">The hash code value matching the name of the sprite</param>
        /// <param name="includeFallbacks">Include fallback sprite assets in the search</param>
        /// <param name="spriteIndex">The index of the sprite matching the provided hash code</param>
        /// <returns>The Sprite Asset that contains the sprite</returns>
        public static TMP_SpriteAsset SearchForSpriteByHashCode(TMP_SpriteAsset spriteAsset, int hashCode, bool includeFallbacks, out int spriteIndex)
        {
            // Make sure sprite asset is not null
            if (spriteAsset == null) { spriteIndex = -1; return null; }

            spriteIndex = spriteAsset.GetSpriteIndexFromHashcode(hashCode);
            if (spriteIndex != -1)
                return spriteAsset;

            // Initialize list to track instance of Sprite Assets that have already been searched.
            if (k_searchedSpriteAssets == null)
                k_searchedSpriteAssets = new List<int>();

            k_searchedSpriteAssets.Clear();

            int id = spriteAsset.GetInstanceID();
            // Add to list of font assets already searched.
            k_searchedSpriteAssets.Add(id);

            if (includeFallbacks && spriteAsset.fallbackSpriteAssets != null && spriteAsset.fallbackSpriteAssets.Count > 0)
                return SearchForSpriteByHashCodeInternal(spriteAsset.fallbackSpriteAssets, hashCode, includeFallbacks, out spriteIndex);

            // Search default sprite asset potentially assigned in the TMP Settings.
            if (includeFallbacks && TMP_Settings.defaultSpriteAsset != null)
                return SearchForSpriteByHashCodeInternal(TMP_Settings.defaultSpriteAsset, hashCode, includeFallbacks, out spriteIndex);

            spriteIndex = -1;
            return null;
        }


        /// <summary>
        ///  Search through the given list of sprite assets and fallbacks for a sprite whose hash code value of its name matches the target hash code.
        /// </summary>
        /// <param name="spriteAssets"></param>
        /// <param name="hashCode"></param>
        /// <param name="searchFallbacks"></param>
        /// <param name="spriteIndex"></param>
        /// <returns></returns>
        private static TMP_SpriteAsset SearchForSpriteByHashCodeInternal(List<TMP_SpriteAsset> spriteAssets, int hashCode, bool searchFallbacks, out int spriteIndex)
        {
            // Search through the list of sprite assets
            for (int i = 0; i < spriteAssets.Count; i++)
            {
                TMP_SpriteAsset temp = spriteAssets[i];
                if (temp == null) continue;

                int id = temp.GetInstanceID();

                // Skip over the fallback sprite asset if it has already been searched.
                if (k_searchedSpriteAssets.Contains(id)) continue;

                // Add to list of font assets already searched.
                k_searchedSpriteAssets.Add(id);

                temp = SearchForSpriteByHashCodeInternal(temp, hashCode, searchFallbacks, out spriteIndex);

                if (temp != null)
                    return temp;
            }

            spriteIndex = -1;
            return null;
        }


        /// <summary>
        /// Search through the given sprite asset and fallbacks for a sprite whose hash code value of its name matches the target hash code.
        /// </summary>
        /// <param name="spriteAsset"></param>
        /// <param name="hashCode"></param>
        /// <param name="searchFallbacks"></param>
        /// <param name="spriteIndex"></param>
        /// <returns></returns>
        private static TMP_SpriteAsset SearchForSpriteByHashCodeInternal(TMP_SpriteAsset spriteAsset, int hashCode, bool searchFallbacks, out int spriteIndex)
        {
            // Get the sprite for the given hash code.
            spriteIndex = spriteAsset.GetSpriteIndexFromHashcode(hashCode);
            if (spriteIndex != -1)
                return spriteAsset;

            if (searchFallbacks && spriteAsset.fallbackSpriteAssets != null && spriteAsset.fallbackSpriteAssets.Count > 0)
                return SearchForSpriteByHashCodeInternal(spriteAsset.fallbackSpriteAssets, hashCode, searchFallbacks, out spriteIndex);

            spriteIndex = -1;
            return null;
        }


        /// <summary>
        /// Sort the sprite glyph table by glyph index.
        /// </summary>
        public void SortGlyphTable()
        {
            if (m_SpriteGlyphTable == null || m_SpriteGlyphTable.Count == 0) return;

            m_SpriteGlyphTable = m_SpriteGlyphTable.OrderBy(item => item.index).ToList();
        }

        /// <summary>
        /// Sort the sprite character table by Unicode values.
        /// </summary>
        internal void SortCharacterTable()
        {
            if (m_SpriteCharacterTable != null && m_SpriteCharacterTable.Count > 0)
                m_SpriteCharacterTable = m_SpriteCharacterTable.OrderBy(c => c.unicode).ToList();
        }

        /// <summary>
        /// Sort both sprite glyph and character tables.
        /// </summary>
        internal void SortGlyphAndCharacterTables()
        {
            SortGlyphTable();
            SortCharacterTable();
        }


        /// <summary>
        /// Internal method used to upgrade sprite asset.
        /// </summary>
        private void UpgradeSpriteAsset()
        {
            m_Version = "1.1.0";

            Debug.Log("Upgrading sprite asset [" + this.name + "] to version " + m_Version + ".", this);

            // Convert legacy glyph and character tables to new format
            m_SpriteCharacterTable.Clear();
            m_SpriteGlyphTable.Clear();

            for (int i = 0; i < spriteInfoList.Count; i++)
            {
                TMP_Sprite oldSprite = spriteInfoList[i];

                TMP_SpriteGlyph spriteGlyph = new TMP_SpriteGlyph();
                spriteGlyph.index = (uint)i; 
                spriteGlyph.sprite = oldSprite.sprite;
                spriteGlyph.metrics = new GlyphMetrics(oldSprite.width, oldSprite.height, oldSprite.xOffset, oldSprite.yOffset, oldSprite.xAdvance);
                spriteGlyph.glyphRect = new GlyphRect((int)oldSprite.x, (int)oldSprite.y, (int)oldSprite.width, (int)oldSprite.height);

                spriteGlyph.scale = 1.0f;
                spriteGlyph.atlasIndex = 0;

                m_SpriteGlyphTable.Add(spriteGlyph);

                TMP_SpriteCharacter spriteCharacter = new TMP_SpriteCharacter((uint)oldSprite.unicode, spriteGlyph);
                spriteCharacter.name = oldSprite.name;
                spriteCharacter.scale = oldSprite.scale;

                m_SpriteCharacterTable.Add(spriteCharacter);
            }

            // Clear legacy glyph info list.
            //spriteInfoList.Clear();

            UpdateLookupTables();

            #if UNITY_EDITOR
            UnityEditor.EditorUtility.SetDirty(this);
            UnityEditor.AssetDatabase.SaveAssets();
            #endif
        }