Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/lib/clayeredviewcontainer.h

@@ -0,0 +1,59 @@
+// 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
+
+#pragma once
+
+#include "cviewcontainer.h"
+#include "iviewlistener.h"
+#include "iscalefactorchangedlistener.h"
+#include "platform/iplatformviewlayer.h"
+
+namespace VSTGUI {
+
+//-----------------------------------------------------------------------------
+// CLayeredViewContainer Declaration
+//! @brief a view container which draws into a platform layer on top of a parent layer or the platform view
+//! @ingroup containerviews
+//! @ingroup new_in_4_2
+//! A CLayeredViewContainer creates a platform layer on top of a parent layer or the platform view of CFrame
+//! if available on that platform and draws into it, otherwise it acts exactly like a CViewContainer
+//-----------------------------------------------------------------------------
+class CLayeredViewContainer : public CViewContainer,
+                              public IPlatformViewLayerDelegate,
+                              public ViewContainerListenerAdapter,
+                              public IScaleFactorChangedListener
+{
+public:
+	explicit CLayeredViewContainer (const CRect& r = CRect (0, 0, 0, 0));
+	~CLayeredViewContainer () noexcept override = default;
+	
+	IPlatformViewLayer* getPlatformLayer () const { return layer; }
+
+	void setZIndex (uint32_t zIndex);
+	uint32_t getZIndex () const { return zIndex; }
+	
+	bool removed (CView* parent) override;
+	bool attached (CView* parent) override;
+	void invalid () override;
+	void invalidRect (const CRect& rect) override;
+	void parentSizeChanged () override;
+	void setViewSize (const CRect& rect, bool invalid = true) override;
+	void setAlphaValue (float alpha) override;
+//-----------------------------------------------------------------------------
+protected:
+	void drawRect (CDrawContext* pContext, const CRect& updateRect) override;
+	void drawViewLayerRects (const PlatformGraphicsDeviceContextPtr& context, double scaleFactor,
+							 const std::vector<CRect>& rects) override;
+	void viewContainerTransformChanged (CViewContainer* container) override;
+	void onScaleFactorChanged (CFrame* frame, double newScaleFactor) override;
+	void updateLayerSize ();
+	CGraphicsTransform getDrawTransform () const;
+	void registerListeners (bool state);
+
+	SharedPointer<IPlatformViewLayer> layer;
+	CLayeredViewContainer* parentLayerView {nullptr};
+	uint32_t zIndex {0};
+};
+
+} // VSTGUI