private static Vector2 MeasureTextWidth(UIDynamicFont font, string text, float textScale, out Vector2 yBounds)
{
float width = 1f;
int size = Mathf.CeilToInt(font.size * textScale);
font.RequestCharacters(text, size, FontStyle.Normal);
yBounds = new Vector2(9999999f, -999999999f);
for (int i = 0; i < text.Length; i++)
{
char c = text[i];
font.baseFont.GetCharacterInfo(c, out CharacterInfo characterInfo, size, FontStyle.Normal);
if (c == '\t')
{
width += 3f * characterSpacing;
}
else
{
width += ((c != ' ') ? characterInfo.maxX : (characterInfo.advance + (characterSpacing * textScale)));
yBounds.x = Mathf.Min(yBounds.x, characterInfo.minY);
yBounds.y = Mathf.Max(yBounds.y, characterInfo.maxY);
}
}
if (text.Length > 2)
{
width += (text.Length - 2) * characterSpacing * textScale;
}
return(new Vector2(width + 6, yBounds.y - yBounds.x + 6));
}
private static Vector2 CalculateTextureSize(UIDynamicFont font, float textScale, ref PoolList <UIMarkupToken> tokens, out int startYPos)
{
float xAdvance = 0;
var yBounds = new Vector2(999999999999999999999999f, -99999999999999999999999999f);
for (int i = 0; i < tokens.Count; i++)
{
UIMarkupToken token = tokens[i];
if (token.tokenType == UIMarkupTokenType.Text)
{
Vector2 textDimensions = MeasureTextWidth(font, token.value, textScale, out Vector2 yBoundsCalc);
xAdvance += textDimensions.x;
yBounds.x = Mathf.Min(yBounds.x, yBoundsCalc.x);
yBounds.y = Mathf.Max(yBounds.y, yBoundsCalc.y);
}
else if (token.tokenType == UIMarkupTokenType.Whitespace)
{
int size2 = Mathf.CeilToInt(font.size * textScale);
float num2 = characterSpacing * textScale;
float num = 0;
font.RequestCharacters(" ", size2, FontStyle.Normal);
for (int j = 0; j < token.length; j++)
{
char c = token[j];
int multiplier = 1;
if (c == '\t')
{
multiplier = 4;
}
font.baseFont.GetCharacterInfo(' ', out CharacterInfo characterInfo, size2, FontStyle.Normal);
num += (characterInfo.advance + num2) * multiplier;
}
token.height = Mathf.CeilToInt(num);
xAdvance += token.height;
yBounds.x = Mathf.Min(yBounds.x, 0);
yBounds.y = Mathf.Max(yBounds.y, token.height);
}
else if (token.tokenType == UIMarkupTokenType.StartTag)
{
if (UIDynamicFontRendererRedirector.Matches(token, "sprite"))
{
if (token.attributeCount != 1)
{
tokens.RemoveAt(i);
i--;
continue;
}
UITextureAtlas.SpriteInfo spriteInfo = UIView.GetAView().defaultAtlas[token.GetAttribute(0).m_Value.value];
if (spriteInfo == null)
{
tokens.RemoveAt(i);
i--;
continue;
}
float targetScale = font.baseline * textScale / spriteInfo.texture.height;
token.height = (int)(targetScale * spriteInfo.texture.height);
xAdvance += (int)(targetScale * spriteInfo.texture.width);
yBounds.x = Mathf.Min(yBounds.x, 0);
yBounds.y = Mathf.Max(yBounds.y, token.height);
}
else if (UIDynamicFontRendererRedirector.Matches(token, UIDynamicFontRendererRedirector.TAG_LINE))
{
if (token.attributeCount != 1)
{
tokens.RemoveAt(i);
i--;
continue;
}
string[] attrs = token.GetAttribute(0).m_Value.value.Split(',');
if (attrs.Length != 3 || !Regex.IsMatch(attrs[1], "^[0-9a-fA-F]{6}$"))
{
tokens.RemoveAt(i);
i--;
continue;
}
UITextureAtlas.SpriteInfo spriteInfo = UIView.GetAView().defaultAtlas[attrs[0]];
if (spriteInfo == null)
{
tokens.RemoveAt(i);
i--;
continue;
}
float baseScale = font.baseline * textScale / spriteInfo.texture.height;
float targetScale = baseScale * 2;
token.height = (int)(targetScale * spriteInfo.texture.height);
xAdvance += (int)(targetScale * spriteInfo.texture.width);
yBounds.x = Mathf.Min(yBounds.x, -token.height / 3);
yBounds.y = Mathf.Max(yBounds.y, token.height / 3 * 2);
}
}
}
if (tokens.Count == 0)
{
startYPos = 0;
return(new Vector2(1, 1));
}
float ySize = yBounds.y - yBounds.x;
startYPos = (int)(-yBounds.x);
return(new Vector2(xAdvance, ySize));
}