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ue4guide |
Coherent UI Notes:
Set focus to CoherentUI widget:
- FSlateApplication::Get().SetKeyboardFocus(Widget)
Set focus back to game: FSlateApplication::Get().SetFocusToGameViewport()
Show mouse cursor: FSlateApplication::Get().ResetToDefaultInputSettings()
CoherentUIGTHUD->ReadyForBindings.AddDynamic(this, &ACoUIGTTestFPSHUD::BindUI);
void ACoUIGTTestFPSHUD::BindUI(int32 frameid, const FString& path, bool isMain) { CoherentUIGTHUD->GetView()->BindCall("CallFromJavaScript", Coherent::UI::MakeHandler(&CalledFromJSSampleDelegate, &(FCalledFromJSSample::ExecuteIfBound))); CoherentUIGTHUD->GetView()->BindCall("CalledFromJSString", Coherent::UI::MakeHandler(this, &ACoUIGTTestFPSHUD::CalledFromJSStringHandler)); CoherentUIGTHUD->GetView()->RegisterForEvent( "CalledFromJSUStruct", Coherent::UIGT::MakeHandler(this, &ACoUIGTTestFPSHUD::CalledFromJSUStructHandler)); }
engine.call
-
Call a function from JS to C++ (can return value)
-
Bind with View::BindCall
engine.trigger
-
Bind with View::RegisterForEvent
-
trigger event which can have multiple functions bound to it, both on JS side & C++ side.
Ex:
class Game
{
public:
void Quit()
{
}
} g_Game;
class GameViewListener : public Coherent::UI::ViewListener
{
public:
virtual void OnReadyForBindings()
{
m_View->RegisterForEvent("OnQuitClicked",
Coherent::UI::MakeHandler(&g_Game, &Game::Quit));
}
};
engine.on('OnQuitClicked', function () {
ShowMessage('Bye');
});
// using jQuery to simplify the sample
$('#QuitButton').click(function () {
// this will execute both Game::Quit in C++
// and ShowMessage('Bye') in JavaScript
engine.trigger('OnQuitClicked');
});
From http://coherent-labs.com/Documentation/cpp-gt/dc/dc7/_binding_cxx.html#CPP2JavaScript