C++ (Cpp) FixedPngStack Examples

Example #1

File: fixed_png_stack.cpp Project: BrazilianJoe/node-png

Handle<Value>
FixedPngStack::PngEncodeAsync(const Arguments &args)
{
    HandleScope scope;

    if (args.Length() != 1)
        return VException("One argument required - callback function.");

    if (!args[0]->IsFunction())
        return VException("First argument must be a function.");

    Local<Function> callback = Local<Function>::Cast(args[0]);
    FixedPngStack *png = ObjectWrap::Unwrap<FixedPngStack>(args.This());

    encode_request *enc_req = (encode_request *)malloc(sizeof(*enc_req));
    if (!enc_req)
        return VException("malloc in FixedPngStack::PngEncodeAsync failed.");

    enc_req->callback = Persistent<Function>::New(callback);
    enc_req->png_obj = png;
    enc_req->png = NULL;
    enc_req->png_len = 0;
    enc_req->error = NULL;

    eio_custom(EIO_PngEncode, EIO_PRI_DEFAULT, EIO_PngEncodeAfter, enc_req);

    ev_ref(EV_DEFAULT_UC);
    png->Ref();

    return Undefined();
}

Example #2

File: fixed_png_stack.cpp Project: dr15x86/node-png

Handle<Value>
FixedPngStack::PngEncodeAsync(const Arguments &args)
{
    HandleScope scope;

    if (args.Length() != 1)
        return VException("One argument required - callback function.");

    if (!args[0]->IsFunction())
        return VException("First argument must be a function.");

    Local<Function> callback = Local<Function>::Cast(args[0]);
    FixedPngStack *png = ObjectWrap::Unwrap<FixedPngStack>(args.This());

    encode_request *enc_req = (encode_request *)malloc(sizeof(*enc_req));
    if (!enc_req)
        return VException("malloc in FixedPngStack::PngEncodeAsync failed.");

    enc_req->callback = Persistent<Function>::New(callback);
    enc_req->png_obj = png;
    enc_req->png = NULL;
    enc_req->png_len = 0;
    enc_req->error = NULL;

    uv_work_t* req = new uv_work_t;
    req->data = enc_req;
    uv_queue_work(uv_default_loop(), req, UV_PngEncode, (uv_after_work_cb)UV_PngEncodeAfter);

    png->Ref();

    return Undefined();
}