Initial release

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

@@ -0,0 +1,86 @@
+// 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 "cview.h"
+#include "controls/ccontrol.h"
+#include "iscalefactorchangedlistener.h"
+#include "iexternalview.h"
+#include <memory>
+
+//------------------------------------------------------------------------
+namespace VSTGUI {
+
+//------------------------------------------------------------------------
+/** View to embed non CView views into VSTGUI
+ *
+ *	This view is the umbrella for views from other view systems (like HWND child windows or
+ *	NSViews).
+ *	The actual implementation for the external view must be done via ExternalView::IView
+ *
+ *	@ingroup new_in_4_13
+ */
+class CExternalView : public CView,
+					  public IScaleFactorChangedListener,
+					  public ExternalView::IViewEmbedder
+{
+public:
+	using ExternalViewPtr = std::shared_ptr<ExternalView::IView>;
+
+	CExternalView (const CRect& r, const ExternalViewPtr& view);
+	~CExternalView () noexcept;
+
+	bool attached (CView* parent) override;
+	bool removed (CView* parent) override;
+	void takeFocus () override;
+	void looseFocus () override;
+	void setViewSize (const CRect& rect, bool invalid = true) override;
+	void parentSizeChanged () override;
+	void onScaleFactorChanged (CFrame* frame, double newScaleFactor) override;
+	void setMouseEnabled (bool enable = true) override;
+
+	ExternalView::IView* getExternalView () const override;
+
+private:
+
+	struct Impl;
+	std::unique_ptr<Impl> impl;
+};
+
+//------------------------------------------------------------------------
+class CExternalControl : public CControl,
+						 public IScaleFactorChangedListener,
+						 public ExternalView::IViewEmbedder
+{
+public:
+	using ExternalControlPtr = std::shared_ptr<ExternalView::IView>;
+
+	CExternalControl (const CRect& r, const ExternalControlPtr& control);
+	~CExternalControl () noexcept;
+
+	void setValue (float val) override;
+
+	bool attached (CView* parent) override;
+	bool removed (CView* parent) override;
+	void takeFocus () override;
+	void looseFocus () override;
+	void setViewSize (const CRect& rect, bool invalid = true) override;
+	void parentSizeChanged () override;
+	void onScaleFactorChanged (CFrame* frame, double newScaleFactor) override;
+	void setMouseEnabled (bool enable = true) override;
+
+	ExternalView::IView* getExternalView () const override;
+
+	CLASS_METHODS_NOCOPY (CExternalControl, CControl)
+private:
+	void draw (CDrawContext* pContext) override {}
+	bool getFocusPath (CGraphicsPath& outPath) override;
+
+	struct Impl;
+	std::unique_ptr<Impl> impl;
+};
+
+//------------------------------------------------------------------------
+} // VSTGUI