本文整理汇总了C++中js::Value::toNumber方法的典型用法代码示例。如果您正苦于以下问题：C++ Value::toNumber方法的具体用法？C++ Value::toNumber怎么用？C++ Value::toNumber使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类js::Value的用法示例。
在下文中一共展示了Value::toNumber方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Handle
NS_DECL_ISUPPORTS
NS_IMETHOD
Handle(const nsAString& aName, const JS::Value& aResult)
{
MOZ_ASSERT(NS_IsMainThread());
JSContext *cx = nsContentUtils::GetCurrentJSContext();
NS_ENSURE_TRUE(cx, NS_OK);
if (!aResult.isNumber()) {
NS_WARNING("'" AUDIO_VOLUME_BT_SCO "' is not a number!");
return NS_OK;
}
BluetoothHfpManager* hfp = BluetoothHfpManager::Get();
hfp->mCurrentVgs = aResult.toNumber();
return NS_OK;
}示例2: Substring
nsresult
HTMLCanvasElement::ParseParams(JSContext* aCx,
const nsAString& aType,
const JS::Value& aEncoderOptions,
nsAString& aParams,
bool* usingCustomParseOptions)
{
// Quality parameter is only valid for the image/jpeg MIME type
if (aType.EqualsLiteral("image/jpeg")) {
if (aEncoderOptions.isNumber()) {
double quality = aEncoderOptions.toNumber();
// Quality must be between 0.0 and 1.0, inclusive
if (quality >= 0.0 && quality <= 1.0) {
aParams.AppendLiteral("quality=");
aParams.AppendInt(NS_lround(quality * 100.0));
}
}
}
// If we haven't parsed the aParams check for proprietary options.
// The proprietary option -moz-parse-options will take a image lib encoder
// parse options string as is and pass it to the encoder.
*usingCustomParseOptions = false;
if (aParams.Length() == 0 && aEncoderOptions.isString()) {
NS_NAMED_LITERAL_STRING(mozParseOptions, "-moz-parse-options:");
nsAutoJSString paramString;
if (!paramString.init(aCx, aEncoderOptions.toString())) {
return NS_ERROR_FAILURE;
}
if (StringBeginsWith(paramString, mozParseOptions)) {
nsDependentSubstring parseOptions = Substring(paramString,
mozParseOptions.Length(),
paramString.Length() -
mozParseOptions.Length());
aParams.Append(parseOptions);
*usingCustomParseOptions = true;
}
}
return NS_OK;
}示例3:
NS_IMETHODIMP
SmsFilter::SetThreadId(JSContext* aCx, const JS::Value& aThreadId)
{
if (aThreadId == JSVAL_NULL) {
mData.threadId() = 0;
return NS_OK;
}
if (!aThreadId.isNumber()) {
return NS_ERROR_INVALID_ARG;
}
double number = aThreadId.toNumber();
uint64_t integer = static_cast<uint64_t>(number);
if (integer == 0 || integer != number) {
return NS_ERROR_INVALID_ARG;
}
mData.threadId() = integer;
return NS_OK;
}示例4: JS_ReportPendingException
nsresult
BluetoothHfpManager::HandleVolumeChanged(const nsAString& aData)
{
MOZ_ASSERT(NS_IsMainThread());
if (GetConnectionStatus() != SocketConnectionStatus::SOCKET_CONNECTED) {
return NS_OK;
}
// The string that we're interested in will be a JSON string that looks like:
// {"key":"volumeup", "value":1.0}
// {"key":"volumedown", "value":0.2}
JSContext* cx = nsContentUtils::GetSafeJSContext();
if (!cx) {
return NS_OK;
}
JS::Value val;
if (!JS_ParseJSON(cx, aData.BeginReading(), aData.Length(), &val)) {
return JS_ReportPendingException(cx) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
if (!val.isObject()) {
return NS_OK;
}
JSObject& obj(val.toObject());
JS::Value key;
if (!JS_GetProperty(cx, &obj, "key", &key)) {
MOZ_ASSERT(!JS_IsExceptionPending(cx));
return NS_ERROR_OUT_OF_MEMORY;
}
if (!key.isString()) {
return NS_OK;
}
JSBool match;
if (!JS_StringEqualsAscii(cx, key.toString(), AUDIO_VOLUME_MASTER, &match)) {
MOZ_ASSERT(!JS_IsExceptionPending(cx));
return NS_ERROR_OUT_OF_MEMORY;
}
if (!match) {
return NS_OK;
}
JS::Value value;
if (!JS_GetProperty(cx, &obj, "value", &value)) {
MOZ_ASSERT(!JS_IsExceptionPending(cx));
return NS_ERROR_OUT_OF_MEMORY;
}
if (!value.isNumber()) {
return NS_ERROR_UNEXPECTED;
}
// AG volume range: [0.0, 1.0]
// HS volume range: [0, 15]
float volume = value.toNumber();
mCurrentVgs = ceil(volume * 15);
SendCommand("+VGS: ", mCurrentVgs);
return NS_OK;
}示例5: JS_ReportPendingException
nsresult
BluetoothHfpManager::HandleVolumeChanged(const nsAString& aData)
{
MOZ_ASSERT(NS_IsMainThread());
// The string that we're interested in will be a JSON string that looks like:
// {"key":"volumeup", "value":1.0}
// {"key":"volumedown", "value":0.2}
JSContext* cx = nsContentUtils::GetSafeJSContext();
if (!cx) {
return NS_OK;
}
JS::Value val;
if (!JS_ParseJSON(cx, aData.BeginReading(), aData.Length(), &val)) {
return JS_ReportPendingException(cx) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
if (!val.isObject()) {
return NS_OK;
}
JSObject& obj(val.toObject());
JS::Value key;
if (!JS_GetProperty(cx, &obj, "key", &key)) {
MOZ_ASSERT(!JS_IsExceptionPending(cx));
return NS_ERROR_OUT_OF_MEMORY;
}
if (!key.isString()) {
return NS_OK;
}
JSBool match;
if (!JS_StringEqualsAscii(cx, key.toString(), AUDIO_VOLUME_MASTER, &match)) {
MOZ_ASSERT(!JS_IsExceptionPending(cx));
return NS_ERROR_OUT_OF_MEMORY;
}
if (!match) {
return NS_OK;
}
JS::Value value;
if (!JS_GetProperty(cx, &obj, "value", &value)) {
MOZ_ASSERT(!JS_IsExceptionPending(cx));
return NS_ERROR_OUT_OF_MEMORY;
}
if (!value.isNumber()) {
return NS_ERROR_UNEXPECTED;
}
// AG volume range: [0.0, 1.0]
float volume = value.toNumber();
// HS volume range: [0, 15]
mCurrentVgs = ceil(volume * 15);
nsDiscriminatedUnion du;
du.mType = 0;
du.u.mInt8Value = mCurrentVgs;
nsCString vgs;
if (NS_FAILED(nsVariant::ConvertToACString(du, vgs))) {
NS_WARNING("Failed to convert volume to string");
return NS_ERROR_FAILURE;
}
nsAutoCString newVgs;
newVgs += "+VGS: ";
newVgs += vgs;
SendLine(newVgs.get());
return NS_OK;
}