Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/plugin-bindings/vst3groupcontroller.cpp

@@ -0,0 +1,85 @@
+// This file is part of VSTGUI. It is subject to the license terms 
+// in the LICENSE file found in the top-level directory of this
+// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
+
+#include "vst3groupcontroller.h"
+#include <cassert>
+
+namespace VSTGUI {
+
+//------------------------------------------------------------------------
+GroupController::GroupController (Steinberg::Vst::Parameter* parameter, Steinberg::Vst::EditController* editController)
+: parameter (parameter)
+, editController (editController)
+{
+	parameter->addDependent (this);
+	vstgui_assert (parameter->getInfo ().stepCount > 0);
+}
+
+//------------------------------------------------------------------------
+GroupController::~GroupController ()
+{
+	parameter->removeDependent (this);
+}
+
+//------------------------------------------------------------------------
+CView* GroupController::verifyView (CView* view, const UIAttributes& attributes, const IUIDescription* description)
+{
+	auto* control = dynamic_cast<CControl*>(view);
+	if (control)
+	{
+		controls.push_back (control);
+		control->setListener (this);
+		parameter->deferUpdate ();
+	}
+	return view;
+}
+
+//------------------------------------------------------------------------
+void GroupController::valueChanged (CControl* pControl)
+{
+	Steinberg::Vst::ParamValue normValue = parameter->toNormalized (pControl->getTag ());
+	editController->performEdit (parameter->getInfo().id, normValue);
+	parameter->setNormalized (normValue);
+}
+
+//------------------------------------------------------------------------
+void GroupController::controlBeginEdit (CControl* pControl)
+{
+	for (const auto& c : controls)
+		c->setMouseEnabled (c == pControl);
+	editController->beginEdit (parameter->getInfo ().id);
+}
+
+//------------------------------------------------------------------------
+void GroupController::controlEndEdit (CControl* pControl)
+{
+	editController->endEdit (parameter->getInfo ().id);
+	update (parameter, kChanged);
+}
+
+//------------------------------------------------------------------------
+void PLUGIN_API GroupController::update (Steinberg::FUnknown* changedUnknown, Steinberg::int32 message)
+{
+	auto* p = Steinberg::FCast<Steinberg::Vst::Parameter> (changedUnknown);
+	if (p && p == parameter)
+	{
+		Steinberg::Vst::ParamValue plainValue = parameter->toPlain (parameter->getNormalized ());
+		for (const auto& c : controls)
+		{
+			if (c->getTag () == plainValue)
+			{
+				c->setValue (1);
+				c->setMouseEnabled (false);
+			}
+			else
+			{
+				c->setValue (0);
+				c->setMouseEnabled (true);
+			}
+			c->invalid ();
+		}
+	}
+}
+
+} // namespace