Method MeasureString

Sources/Jazz2/UI/Font.cpp:149–200

	}

	Vector2f Font::MeasureString(StringView text, float scale, float charSpacing, float lineSpacing)
	{
		std::size_t textLength = text.size();
		if (textLength == 0 || _charSize.Y <= 0) {
			return Vector2f::Zero;
		}

		float totalWidth = 0.0f, lastWidth = 0.0f, totalHeight = 0.0f;
		float charSpacingPre = charSpacing;
		float scalePre = scale;

		std::int32_t idx = 0;
		do {
			Pair<char32_t, std::size_t> cursor = Utf8::NextChar(text, idx);

			if (cursor.first() == '\n') {
				// New line
				if (totalWidth < lastWidth) {
					totalWidth = lastWidth;
				}
				lastWidth = 0.0f;
				totalHeight += (_charSize.Y * scale * lineSpacing);
			} else if (cursor.first() == '\f') {
				// Formatting
				cursor = Utf8::NextChar(text, cursor.second());
				if (cursor.first() == '[') {
					idx = std::int32_t(cursor.second());
					do {
						cursor = Utf8::NextChar(text, idx);
						if (cursor.first() == ']') {
							break;
						}
						idx = std::int32_t(cursor.second());
					} while (idx < textLength);
				}
			} else {
				Vector2f charSize = MeasureChar(cursor.first());
				if (charSize.X > 0 && charSize.Y > 0) {
					lastWidth += (charSize.X + _baseSpacing) * charSpacingPre * scalePre;
				}
			}

			idx = std::int32_t(cursor.second());
		} while (idx < textLength);

		if (totalWidth < lastWidth) {
			totalWidth = lastWidth;
		}
		totalHeight += (_charSize.Y * scale * lineSpacing);

		return Vector2f(ceilf(totalWidth), ceilf(totalHeight));
	}

	Vector2f Font::MeasureStringEx(StringView text, float scale, float charSpacing, float maxWidth, std::int32_t* charFit, float* charFitWidths)
	{