Method updateCharacters

Source/Node/Label.cpp:261–395

}

void Label::updateCharacters(const std::vector<uint32_t>& chars) {
	if (!_font) return;
	float nextFontPositionX = 0;
	float nextFontPositionY = 0;
	uint32_t prev = 0;
	float kerningAmount = 0;
	Size finalSize;
	float longestLine = 0;
	float totalHeight = 0;
	uint32_t quantityOfLines = 1;

	for (size_t i = 0; i < _characters.size(); i++) {
		if (_characters[i] && _characters[i]->sprite) {
			_characters[i]->sprite->setVisible(false);
		}
	}

	if (_characters.size() < chars.size()) {
		_characters.resize(chars.size());
	}

	for (uint32_t ch : chars) {
		if (ch == '\n') {
			quantityOfLines++;
		}
	}

	const bgfx::FontInfo& fontInfo = _font->getInfo();
	float lineHeight = (fontInfo.ascender - fontInfo.descender) * _fontScale + _lineGap;
	totalHeight = lineHeight * quantityOfLines - (quantityOfLines > 0 ? _lineGap : 0);
	nextFontPositionY = lineHeight * quantityOfLines - lineHeight;

	float padding = fontInfo.sdf ? fontInfo.pixelSize * SDF_FONT_BUFFER_PADDING_RATIO * _fontScale : 0;

	const bgfx::GlyphInfo* fontDef = nullptr;
	for (size_t i = 0; i < chars.size(); i++) {
		uint32_t ch = chars[i];
		CharItem* fontChar = _characters[i].get();

		bool isTab = ch == '\t';
		if (isTab) {
			ch = ' ';
		}

		if (ch == '\n') {
			nextFontPositionX = 0;
			nextFontPositionY -= lineHeight;
			if (fontChar) {
				fontChar->code = ch;
				if (fontChar->sprite) {
					fontChar->sprite->setVisible(false);
				}
			}
			continue;
		}

		kerningAmount = s_cast<float>(SharedFontManager.getKerning(_font->getHandle(), prev, ch)) * _fontScale + _spacing;