void Label::alignText()
{
if (_fontAtlas == nullptr || _utf16Text.empty())
{
setContentSize(Size::ZERO);
return;
}
_fontAtlas->prepareLetterDefinitions(_utf16Text);
auto& textures = _fontAtlas->getTextures();
if (textures.size() > _batchNodes.size())
{
for (auto index = _batchNodes.size(); index < textures.size(); ++index)
{
auto batchNode = SpriteBatchNode::createWithTexture(textures.at(index));
if (batchNode)
{
_isOpacityModifyRGB = batchNode->getTexture()->hasPremultipliedAlpha();
_blendFunc = batchNode->getBlendFunc();
batchNode->setAnchorPoint(Vec2::ANCHOR_TOP_LEFT);
batchNode->setPosition(Vec2::ZERO);
_batchNodes.pushBack(batchNode);
}
}
}
if (_batchNodes.empty())
{
return;
}
_reusedLetter->setBatchNode(_batchNodes.at(0));
_lengthOfString = 0;
_textDesiredHeight = 0.f;
_linesWidth.clear();
if (_maxLineWidth > 0.f && !_lineBreakWithoutSpaces)
{
multilineTextWrapByWord();
}
else
{
multilineTextWrapByChar();
}
computeAlignmentOffset();
updateQuads();
updateLabelLetters();
updateColor();
}
void Label::shrinkLabelToContentSize(const std::function<bool(void)>& lambda)
{
float fontSize = this->getRenderingFontSize();
int i = 0;
auto letterDefinition = _fontAtlas->_letterDefinitions;
auto tempLetterDefinition = letterDefinition;
float originalLineHeight = _lineHeight;
bool flag = true;
while (lambda()) {
++i;
float newFontSize = fontSize - i;
flag = false;
if (newFontSize <= 0) {
break;
}
float scale = newFontSize / fontSize;
std::swap(_fontAtlas->_letterDefinitions, tempLetterDefinition);
_fontAtlas->scaleFontLetterDefinition(scale);
this->setLineHeight(originalLineHeight * scale);
if (_maxLineWidth > 0.f && !_lineBreakWithoutSpaces)
{
multilineTextWrapByWord();
}
else
{
multilineTextWrapByChar();
}
computeAlignmentOffset();
tempLetterDefinition = letterDefinition;
}
this->setLineHeight(originalLineHeight);
std::swap(_fontAtlas->_letterDefinitions, letterDefinition);
if (!flag) {
if (fontSize - i >= 0) {
this->scaleFontSizeDown(fontSize - i);
}
}
}
