Method makeWidgetCallbacks

source/windowing/StarWidgetLuaBindings.cpp:94–463

}

LuaCallbacks LuaBindings::makeWidgetCallbacks(Widget* parentWidget, GuiReaderPtr reader) {
  if (!reader)
    reader = make_shared<GuiReader>();
  
  LuaCallbacks callbacks;

  // a bit miscellaneous, but put this here since widgets have access to gui context

  callbacks.registerCallback("playSound",
      [parentWidget](String const& audio, Maybe<int> loops, Maybe<float> volume) {
        parentWidget->context()->playAudio(audio, loops.value(0), volume.value(1.0f));
      });

  // widget userdata methods

  callbacks.registerCallback("bindCanvas", [parentWidget](String const& widgetName) -> Maybe<CanvasWidgetPtr> {
      if (auto canvas = parentWidget->fetchChild<CanvasWidget>(widgetName))
        return canvas;
      return {};
    });

  // generic widget callbacks

  callbacks.registerCallback("getPosition", [parentWidget](String const& widgetName) -> Maybe<Vec2I> {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        return widget->relativePosition();
      return {};
    });
  callbacks.registerCallback("setPosition", [parentWidget](String const& widgetName, Vec2I const& position) {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        widget->setPosition(position);
    });

  callbacks.registerCallback("getSize", [parentWidget](String const& widgetName) -> Maybe<Vec2I> {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        return widget->size();
      return {};
    });
  callbacks.registerCallback("setSize", [parentWidget](String const& widgetName, Vec2I const& size) {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        widget->setSize(size);
    });

  callbacks.registerCallback("setVisible", [parentWidget](String const& widgetName, bool visible) {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        widget->setVisibility(visible);
    });

  callbacks.registerCallback("active", [parentWidget](String const& widgetName) -> Maybe<bool> {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        return widget->active();
      return {};
    });

  callbacks.registerCallback("focus", [parentWidget](String const& widgetName) {
      if (auto widget = parentWidget->fetchChild<Widget>(widgetName))
        widget->focus();
    });