playtest-unity/playtest/Library/PackageCache/com.unity.textmeshpro@3.0.6/Scripts/Runtime/TMP_FontAssetCommon.cs

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2023-06-19 23:21:21 -04:00
using UnityEngine;
using UnityEngine.Serialization;
using UnityEngine.TextCore;
using UnityEngine.TextCore.LowLevel;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
namespace TMPro
{
/// <summary>
/// Class that contains the basic information about the font.
/// </summary>
[Serializable]
public class FaceInfo_Legacy
{
public string Name;
public float PointSize;
public float Scale;
public int CharacterCount;
public float LineHeight;
public float Baseline;
public float Ascender;
public float CapHeight;
public float Descender;
public float CenterLine;
public float SuperscriptOffset;
public float SubscriptOffset;
public float SubSize;
public float Underline;
public float UnderlineThickness;
public float strikethrough;
public float strikethroughThickness;
public float TabWidth;
public float Padding;
public float AtlasWidth;
public float AtlasHeight;
}
// Class which contains the Glyph Info / Character definition for each character contained in the font asset.
[Serializable]
public class TMP_Glyph : TMP_TextElement_Legacy
{
/// <summary>
/// Function to create a deep copy of a GlyphInfo.
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public static TMP_Glyph Clone(TMP_Glyph source)
{
TMP_Glyph copy = new TMP_Glyph();
copy.id = source.id;
copy.x = source.x;
copy.y = source.y;
copy.width = source.width;
copy.height = source.height;
copy.xOffset = source.xOffset;
copy.yOffset = source.yOffset;
copy.xAdvance = source.xAdvance;
copy.scale = source.scale;
return copy;
}
}
// Structure which holds the font creation settings
[Serializable]
public struct FontAssetCreationSettings
{
public string sourceFontFileName;
public string sourceFontFileGUID;
public int pointSizeSamplingMode;
public int pointSize;
public int padding;
public int packingMode;
public int atlasWidth;
public int atlasHeight;
public int characterSetSelectionMode;
public string characterSequence;
public string referencedFontAssetGUID;
public string referencedTextAssetGUID;
public int fontStyle;
public float fontStyleModifier;
public int renderMode;
public bool includeFontFeatures;
internal FontAssetCreationSettings(string sourceFontFileGUID, int pointSize, int pointSizeSamplingMode, int padding, int packingMode, int atlasWidth, int atlasHeight, int characterSelectionMode, string characterSet, int renderMode)
{
this.sourceFontFileName = string.Empty;
this.sourceFontFileGUID = sourceFontFileGUID;
this.pointSize = pointSize;
this.pointSizeSamplingMode = pointSizeSamplingMode;
this.padding = padding;
this.packingMode = packingMode;
this.atlasWidth = atlasWidth;
this.atlasHeight = atlasHeight;
this.characterSequence = characterSet;
this.characterSetSelectionMode = characterSelectionMode;
this.renderMode = renderMode;
this.referencedFontAssetGUID = string.Empty;
this.referencedTextAssetGUID = string.Empty;
this.fontStyle = 0;
this.fontStyleModifier = 0;
this.includeFontFeatures = false;
}
}
/// <summary>
/// Contains the font assets for the regular and italic styles associated with a given font weight.
/// </summary>
[Serializable]
public struct TMP_FontWeightPair
{
public TMP_FontAsset regularTypeface;
public TMP_FontAsset italicTypeface;
}
public struct KerningPairKey
{
public uint ascii_Left;
public uint ascii_Right;
public uint key;
public KerningPairKey(uint ascii_left, uint ascii_right)
{
ascii_Left = ascii_left;
ascii_Right = ascii_right;
key = (ascii_right << 16) + ascii_left;
}
}
/// <summary>
/// Positional adjustments of a glyph
/// </summary>
[Serializable]
public struct GlyphValueRecord_Legacy
{
public float xPlacement;
public float yPlacement;
public float xAdvance;
public float yAdvance;
internal GlyphValueRecord_Legacy(UnityEngine.TextCore.LowLevel.GlyphValueRecord valueRecord)
{
this.xPlacement = valueRecord.xPlacement;
this.yPlacement = valueRecord.yPlacement;
this.xAdvance = valueRecord.xAdvance;
this.yAdvance = valueRecord.yAdvance;
}
public static GlyphValueRecord_Legacy operator +(GlyphValueRecord_Legacy a, GlyphValueRecord_Legacy b)
{
GlyphValueRecord_Legacy c;
c.xPlacement = a.xPlacement + b.xPlacement;
c.yPlacement = a.yPlacement + b.yPlacement;
c.xAdvance = a.xAdvance + b.xAdvance;
c.yAdvance = a.yAdvance + b.yAdvance;
return c;
}
}
[Serializable]
public class KerningPair
{
/// <summary>
/// The first glyph part of a kerning pair.
/// </summary>
public uint firstGlyph
{
get { return m_FirstGlyph; }
set { m_FirstGlyph = value; }
}
[FormerlySerializedAs("AscII_Left")]
[SerializeField]
private uint m_FirstGlyph;
/// <summary>
/// The positional adjustment of the first glyph.
/// </summary>
public GlyphValueRecord_Legacy firstGlyphAdjustments
{
get { return m_FirstGlyphAdjustments; }
}
[SerializeField]
private GlyphValueRecord_Legacy m_FirstGlyphAdjustments;
/// <summary>
/// The second glyph part of a kerning pair.
/// </summary>
public uint secondGlyph
{
get { return m_SecondGlyph; }
set { m_SecondGlyph = value; }
}
[FormerlySerializedAs("AscII_Right")]
[SerializeField]
private uint m_SecondGlyph;
/// <summary>
/// The positional adjustment of the second glyph.
/// </summary>
public GlyphValueRecord_Legacy secondGlyphAdjustments
{
get { return m_SecondGlyphAdjustments; }
}
[SerializeField]
private GlyphValueRecord_Legacy m_SecondGlyphAdjustments;
[FormerlySerializedAs("XadvanceOffset")]
public float xOffset;
internal static KerningPair empty = new KerningPair(0, new GlyphValueRecord_Legacy(), 0, new GlyphValueRecord_Legacy());
/// <summary>
/// Determines if the Character Spacing property of the text object will affect the kerning pair.
/// This is mostly relevant when using Diacritical marks to prevent Character Spacing from altering the
/// </summary>
public bool ignoreSpacingAdjustments
{
get { return m_IgnoreSpacingAdjustments; }
}
[SerializeField]
private bool m_IgnoreSpacingAdjustments = false;
public KerningPair()
{
m_FirstGlyph = 0;
m_FirstGlyphAdjustments = new GlyphValueRecord_Legacy();
m_SecondGlyph = 0;
m_SecondGlyphAdjustments = new GlyphValueRecord_Legacy();
}
public KerningPair(uint left, uint right, float offset)
{
firstGlyph = left;
m_SecondGlyph = right;
xOffset = offset;
}
public KerningPair(uint firstGlyph, GlyphValueRecord_Legacy firstGlyphAdjustments, uint secondGlyph, GlyphValueRecord_Legacy secondGlyphAdjustments)
{
m_FirstGlyph = firstGlyph;
m_FirstGlyphAdjustments = firstGlyphAdjustments;
m_SecondGlyph = secondGlyph;
m_SecondGlyphAdjustments = secondGlyphAdjustments;
}
internal void ConvertLegacyKerningData()
{
m_FirstGlyphAdjustments.xAdvance = xOffset;
//xOffset = 0;
}
}
[Serializable]
public class KerningTable
{
public List<KerningPair> kerningPairs;
public KerningTable()
{
kerningPairs = new List<KerningPair>();
}
public void AddKerningPair()
{
if (kerningPairs.Count == 0)
{
kerningPairs.Add(new KerningPair(0, 0, 0));
}
else
{
uint left = kerningPairs.Last().firstGlyph;
uint right = kerningPairs.Last().secondGlyph;
float xoffset = kerningPairs.Last().xOffset;
kerningPairs.Add(new KerningPair(left, right, xoffset));
}
}
/// <summary>
/// Add Kerning Pair
/// </summary>
/// <param name="first">First glyph</param>
/// <param name="second">Second glyph</param>
/// <param name="offset">xAdvance value</param>
/// <returns></returns>
public int AddKerningPair(uint first, uint second, float offset)
{
int index = kerningPairs.FindIndex(item => item.firstGlyph == first && item.secondGlyph == second);
if (index == -1)
{
kerningPairs.Add(new KerningPair(first, second, offset));
return 0;
}
// Return -1 if Kerning Pair already exists.
return -1;
}
/// <summary>
/// Add Glyph pair adjustment record
/// </summary>
/// <param name="firstGlyph">The first glyph</param>
/// <param name="firstGlyphAdjustments">Adjustment record for the first glyph</param>
/// <param name="secondGlyph">The second glyph</param>
/// <param name="secondGlyphAdjustments">Adjustment record for the second glyph</param>
/// <returns></returns>
public int AddGlyphPairAdjustmentRecord(uint first, GlyphValueRecord_Legacy firstAdjustments, uint second, GlyphValueRecord_Legacy secondAdjustments)
{
int index = kerningPairs.FindIndex(item => item.firstGlyph == first && item.secondGlyph == second);
if (index == -1)
{
kerningPairs.Add(new KerningPair(first, firstAdjustments, second, secondAdjustments));
return 0;
}
// Return -1 if Kerning Pair already exists.
return -1;
}
public void RemoveKerningPair(int left, int right)
{
int index = kerningPairs.FindIndex(item => item.firstGlyph == left && item.secondGlyph == right);
if (index != -1)
kerningPairs.RemoveAt(index);
}
public void RemoveKerningPair(int index)
{
kerningPairs.RemoveAt(index);
}
public void SortKerningPairs()
{
// Sort List of Kerning Info
if (kerningPairs.Count > 0)
kerningPairs = kerningPairs.OrderBy(s => s.firstGlyph).ThenBy(s => s.secondGlyph).ToList();
}
}
public static class TMP_FontUtilities
{
private static List<int> k_searchedFontAssets;
/// <summary>
/// Search through the given font and its fallbacks for the specified character.
/// </summary>
/// <param name="font">The font asset to search for the given character.</param>
/// <param name="unicode">The character to find.</param>
/// <param name="character">out parameter containing the glyph for the specified character (if found).</param>
/// <returns></returns>
public static TMP_FontAsset SearchForCharacter(TMP_FontAsset font, uint unicode, out TMP_Character character)
{
if (k_searchedFontAssets == null)
k_searchedFontAssets = new List<int>();
k_searchedFontAssets.Clear();
return SearchForCharacterInternal(font, unicode, out character);
}
/// <summary>
/// Search through the given list of fonts and their possible fallbacks for the specified character.
/// </summary>
/// <param name="fonts"></param>
/// <param name="unicode"></param>
/// <param name="character"></param>
/// <returns></returns>
public static TMP_FontAsset SearchForCharacter(List<TMP_FontAsset> fonts, uint unicode, out TMP_Character character)
{
return SearchForCharacterInternal(fonts, unicode, out character);
}
private static TMP_FontAsset SearchForCharacterInternal(TMP_FontAsset font, uint unicode, out TMP_Character character)
{
character = null;
if (font == null) return null;
if (font.characterLookupTable.TryGetValue(unicode, out character))
{
return font;
}
else if (font.fallbackFontAssetTable != null && font.fallbackFontAssetTable.Count > 0)
{
for (int i = 0; i < font.fallbackFontAssetTable.Count && character == null; i++)
{
TMP_FontAsset temp = font.fallbackFontAssetTable[i];
if (temp == null) continue;
int id = temp.GetInstanceID();
// Skip over the fallback font asset in the event it is null or if already searched.
if (k_searchedFontAssets.Contains(id)) continue;
// Add to list of font assets already searched.
k_searchedFontAssets.Add(id);
temp = SearchForCharacterInternal(temp, unicode, out character);
if (temp != null)
return temp;
}
}
return null;
}
private static TMP_FontAsset SearchForCharacterInternal(List<TMP_FontAsset> fonts, uint unicode, out TMP_Character character)
{
character = null;
if (fonts != null && fonts.Count > 0)
{
for (int i = 0; i < fonts.Count; i++)
{
TMP_FontAsset fontAsset = SearchForCharacterInternal(fonts[i], unicode, out character);
if (fontAsset != null)
return fontAsset;
}
}
return null;
}
}
}