void Label::enableShadow(const Color4B& shadowColor /* = Color4B::BLACK */,const Size &offset /* = Size(2 ,-2)*/, int blurRadius /* = 0 */)
{
_shadowEnabled = true;
_shadowDirty = true;
auto contentScaleFactor = CC_CONTENT_SCALE_FACTOR();
_shadowOffset.width = offset.width * contentScaleFactor;
_shadowOffset.height = offset.height * contentScaleFactor;
//TODO: support blur for shadow
_shadowBlurRadius = 0;
if (_textSprite && _shadowNode)
{
if (shadowColor != _shadowColor)
{
Node::removeChild(_shadowNode, true);
_shadowNode = nullptr;
createShadowSpriteForSystemFont();
}
else
{
_shadowNode->setPosition(_shadowOffset.width, _shadowOffset.height);
}
}
_shadowColor.r = shadowColor.r / 255.0f;
_shadowColor.g = shadowColor.g / 255.0f;
_shadowColor.b = shadowColor.b / 255.0f;
_shadowColor.a = shadowColor.a / 255.0f;
}
void Label::updateContent()
{
if (_systemFontDirty)
{
if (_fontAtlas)
{
_batchNodes.clear();
FontAtlasCache::releaseFontAtlas(_fontAtlas);
_fontAtlas = nullptr;
}
_systemFontDirty = false;
}
CC_SAFE_RELEASE_NULL(_textSprite);
CC_SAFE_RELEASE_NULL(_shadowNode);
if (_fontAtlas)
{
std::u16string utf16String;
if (StringUtils::UTF8ToUTF16(_utf8Text, utf16String))
{
_utf16Text = utf16String;
}
computeHorizontalKernings(_utf16Text);
alignText();
}
else
{
auto fontDef = _getFontDefinition();
createSpriteForSystemFont(fontDef);
if (_shadowEnabled)
{
createShadowSpriteForSystemFont(fontDef);
}
}
_contentDirty = false;
#if CC_LABEL_DEBUG_DRAW
_debugDrawNode->clear();
Vec2 vertices[4] =
{
Vec2::ZERO,
Vec2(_contentSize.width, 0),
Vec2(_contentSize.width, _contentSize.height),
Vec2(0, _contentSize.height)
};
_debugDrawNode->drawPoly(vertices, 4, true, Color4F::WHITE);
#endif
}
void Label::updateContent()
{
if (_systemFontDirty)
{
if (_fontAtlas)
{
_batchNodes.clear();
_batchNodes.push_back(this);
FontAtlasCache::releaseFontAtlas(_fontAtlas);
_fontAtlas = nullptr;
}
_systemFontDirty = false;
}
if (_textSprite)
{
Node::removeChild(_textSprite, true);
_textSprite = nullptr;
if (_shadowNode)
{
Node::removeChild(_shadowNode, true);
_shadowNode = nullptr;
}
}
if (_fontAtlas)
{
std::u16string utf16String;
if (StringUtils::UTF8ToUTF16(_originalUTF8String, utf16String))
{
_currentUTF16String = utf16String;
}
computeStringNumLines();
computeHorizontalKernings(_currentUTF16String);
alignText();
}
else
{
createSpriteForSystemFont();
if (_shadowEnabled)
{
createShadowSpriteForSystemFont();
}
}
_contentDirty = false;
}
