Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/uidescription/editing/uiselection.h

@@ -0,0 +1,132 @@
+// 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
+
+#if VSTGUI_LIVE_EDITING
+
+#include "../../lib/cview.h"
+#include "../../lib/dispatchlist.h"
+#include <list>
+#include <string>
+
+namespace VSTGUI {
+class UIViewFactory;
+class IUIDescription;
+class OutputStream;
+class InputStream;
+class UISelection;
+
+//------------------------------------------------------------------------
+class IUISelectionListener
+{
+public:
+	virtual ~IUISelectionListener () noexcept = default;
+	
+	virtual void selectionWillChange (UISelection* selection) = 0;
+	virtual void selectionDidChange (UISelection* selection) = 0;
+	virtual void selectionViewsWillChange (UISelection* selection) = 0;
+	virtual void selectionViewsDidChange (UISelection* selection) = 0;
+};
+
+//----------------------------------------------------------------------------------------------------
+class UISelectionListenerAdapter : public IUISelectionListener
+{
+public:
+	void selectionWillChange (UISelection* selection) override {}
+	void selectionDidChange (UISelection* selection) override {}
+	void selectionViewsWillChange (UISelection* selection) override {}
+	void selectionViewsDidChange (UISelection* selection) override {}
+};
+
+//----------------------------------------------------------------------------------------------------
+class UISelection : public NonAtomicReferenceCounted,
+                    protected ListenerProvider<UISelection, IUISelectionListener>
+//----------------------------------------------------------------------------------------------------
+{
+public:
+
+	using UISelectionViewList = std::list<SharedPointer<CView>>;
+
+	using const_iterator = UISelectionViewList::const_iterator;
+	using const_reverse_iterator = UISelectionViewList::const_reverse_iterator;
+	
+	enum {
+		kMultiSelectionStyle,
+		kSingleSelectionStyle
+	};
+	
+	UISelection (int32_t style = kMultiSelectionStyle);
+	~UISelection () override;
+
+	const_iterator begin () const;
+	const_iterator end () const;
+	const_reverse_iterator rbegin () const;
+	const_reverse_iterator rend () const;
+	
+	void setStyle (int32_t style);
+
+	void add (CView* view);
+	void remove (CView* view);
+	void setExclusive (CView* view);
+	void clear ();
+
+	CView* first () const;
+
+	bool contains (CView* view) const;
+	bool containsParent (CView* view) const;
+
+	int32_t total () const;
+	CRect getBounds () const;
+	static CRect getGlobalViewCoordinates (CView* view);
+
+	void moveBy (const CPoint& p);
+	void sizeBy (const CRect& r);
+	void invalidRects () const;
+
+	void setDragOffset (const CPoint& p) { dragOffset = p; }
+	const CPoint& getDragOffset () const { return dragOffset; }
+
+	void willChange ();
+	void didChange ();
+	
+	void viewsWillChange ();
+	void viewsDidChange ();
+
+	bool store (OutputStream& stream, IUIDescription* uiDescription);
+	bool restore (InputStream& stream, IUIDescription* uiDescription);
+
+	struct DeferChange
+	{
+		DeferChange (UISelection& selection) : selection (selection)
+		{
+			selection.willChange ();
+		}
+		~DeferChange () noexcept
+		{
+			selection.didChange ();
+		}
+	private:
+		UISelection& selection;
+	};
+	
+	using ListenerProvider<UISelection, IUISelectionListener>::registerListener;
+	using ListenerProvider<UISelection, IUISelectionListener>::unregisterListener;
+protected:
+	int32_t style;
+	
+	CPoint dragOffset;
+	
+	UISelectionViewList viewList;
+	
+	int32_t inChange {0};
+	int32_t inViewsChange {0};
+};
+
+//----------------------------------------------------------------------------------------------------
+SharedPointer<CBitmap> createBitmapFromSelection (UISelection* selection, CFrame* frame, CViewContainer* anchorView = nullptr);
+
+} // VSTGUI
+
+#endif // VSTGUI_LIVE_EDITING