public WorkerScoreRenderer(JsApi api, Settings settings)
{
_api = api;
try
{
_worker = new Worker(settings.ScriptFile);
}
catch
{
// fallback to blob worker
try
{
var script = "importScripts('" + settings.ScriptFile + "')";
var blob = new Blob(new[] { script });
_worker = new Worker(window.URL.createObjectURL(blob));
}
catch (Exception e)
{
Logger.Error("Rendering", "Failed to create WebWorker: " + e);
// TODO: fallback to synchronous mode
}
}
_worker.postMessage(new { cmd = "alphaTab.initialize", settings = settings.ToJson() });
_worker.addEventListener("message", HandleWorkerMessage, false);
}
public WorkerScoreRenderer(JsApi api, Settings settings)
{
_api = api;
// Bug #172: FireFox silently does not start the worker when script is on a different domain
// we use blob workers always since they seem to work always
try
{
var script = "importScripts('" + settings.ScriptFile + "')";
var blob = new Blob(new[] { script });
_worker = new Worker(window.URL.createObjectURL(blob));
}
catch (Exception e)
{
Logger.Error("Rendering", "Failed to create WebWorker: " + e);
// TODO: fallback to synchronous mode
}
_worker.postMessage(new { cmd = "alphaTab.initialize", settings = settings.ToJson() });
_worker.addEventListener("message", HandleWorkerMessage, false);
}
public void Print(string width)
{
// prepare a popup window for printing (a4 width, window height, centered)
var preview = window.open("", "", "width=0,height=0");
var a4 = (HtmlDivElement)preview.document.createElement("div");
if (!string.IsNullOrEmpty(width))
{
a4.style.width = width;
}
else
{
a4.style.width = "210mm";
}
preview.document.As <HtmlDocument>().write("<!DOCTYPE html><html></head><body></body></html>");
preview.document.body.appendChild(a4);
var dualScreenLeft = JsTypeOf(window.screenLeft) != JsTypes.undefined
? window.screenLeft
: screen.Member("left").As <int>();
var dualScreenTop = JsTypeOf(window.screenTop) != JsTypes.undefined
? window.screenTop
: screen.Member("top").As <int>();
var screenWidth = JsTypeOf(window.innerWidth) != JsTypes.undefined
? window.innerWidth
: JsTypeOf(document.documentElement.clientWidth) != JsTypes.undefined
? document.documentElement.clientWidth
: screen.width;
var screenHeight = JsTypeOf(window.innerHeight) != JsTypes.undefined
? window.innerHeight
: JsTypeOf(document.documentElement.clientHeight) != JsTypes.undefined
? document.documentElement.clientHeight
: screen.height;
var w = a4.offsetWidth + 50;
var h = window.innerHeight;
var left = ((screenWidth / 2) - (w / 2)) + dualScreenLeft;
var top = ((screenHeight / 2) - (h / 2)) + dualScreenTop;
preview.resizeTo(w, h);
preview.moveTo(left, top);
preview.focus();
// render alphaTab
var settings = Settings.Defaults;
settings.ScriptFile = Settings.ScriptFile;
settings.FontDirectory = Settings.FontDirectory;
settings.Scale = 0.8f;
settings.StretchForce = 0.8f;
settings.DisableLazyLoading = true;
settings.UseWebWorker = false;
var alphaTab = new JsApi(a4, settings);
alphaTab.Renderer.PostRenderFinished += () =>
{
alphaTab.CanvasElement.style.height = "100%";
preview.window.print();
};
alphaTab.SetTracks(Tracks);
}
