Sprites parseSprite(const std::string& image, const std::string& json) {
using namespace rapidjson;
Sprites sprites;
// Parse the sprite image.
const util::Image raster(image);
if (!raster) {
Log::Warning(Event::Sprite, "Could not parse sprite image");
return sprites;
}
Document doc;
doc.Parse<0>(json.c_str());
if (doc.HasParseError()) {
Log::Warning(Event::Sprite, std::string{ "Failed to parse JSON: " } + doc.GetParseError() +
" at offset " + std::to_string(doc.GetErrorOffset()));
return sprites;
} else if (!doc.IsObject()) {
Log::Warning(Event::Sprite, "Sprite JSON root must be an object");
return sprites;
} else {
for (Value::ConstMemberIterator itr = doc.MemberBegin(); itr != doc.MemberEnd(); ++itr) {
const std::string name = { itr->name.GetString(), itr->name.GetStringLength() };
const Value& value = itr->value;
if (value.IsObject()) {
const uint16_t x = getUInt16(value, "x", 0);
const uint16_t y = getUInt16(value, "y", 0);
const uint16_t width = getUInt16(value, "width", 0);
const uint16_t height = getUInt16(value, "height", 0);
const double pixelRatio = getDouble(value, "pixelRatio", 1);
const bool sdf = getBoolean(value, "sdf", false);
auto sprite = createSpriteImage(raster, x, y, width, height, pixelRatio, sdf);
if (sprite) {
sprites.emplace(name, sprite);
}
}
}
}
return sprites;
}
SpriteParseResult parseSprite(const std::string& image, const std::string& json) {
Sprites sprites;
PremultipliedImage raster;
try {
raster = decodeImage(image);
} catch (...) {
return std::current_exception();
}
JSDocument doc;
doc.Parse<0>(json.c_str());
if (doc.HasParseError()) {
std::stringstream message;
message << "Failed to parse JSON: " << rapidjson::GetParseError_En(doc.GetParseError()) << " at offset " << doc.GetErrorOffset();
return std::make_exception_ptr(std::runtime_error(message.str()));
} else if (!doc.IsObject()) {
return std::make_exception_ptr(std::runtime_error("Sprite JSON root must be an object"));
} else {
for (JSValue::ConstMemberIterator itr = doc.MemberBegin(); itr != doc.MemberEnd(); ++itr) {
const std::string name = { itr->name.GetString(), itr->name.GetStringLength() };
const JSValue& value = itr->value;
if (value.IsObject()) {
const uint16_t x = getUInt16(value, "x", 0);
const uint16_t y = getUInt16(value, "y", 0);
const uint16_t width = getUInt16(value, "width", 0);
const uint16_t height = getUInt16(value, "height", 0);
const double pixelRatio = getDouble(value, "pixelRatio", 1);
const bool sdf = getBoolean(value, "sdf", false);
auto sprite = createSpriteImage(raster, x, y, width, height, pixelRatio, sdf);
if (sprite) {
sprites.emplace(name, sprite);
}
}
}
}
return sprites;
}
