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hammer/toolpickface.h

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+//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Tool used for picking brush faces.
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef TOOLPICKFACE_H
+#define TOOLPICKFACE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "MapFace.h"
+#include "ToolInterface.h"
+
+
+class CMapView3D;
+class CToolPickFace;
+
+
+//
+// Selection states for entries in our list of selected faces.
+//
+enum FaceState_t
+{
+	FaceState_Select = 0,		// 
+	FaceState_Partial,			// Used for multiselect; the face is in at least one of the face lists being edited.
+	FaceState_None,				// Used for multiselect; to deselect partially selected faces. Otherwise they are removed from the list.
+};
+
+
+//
+// An entry in our list of selected faces.
+//
+struct SelectedFace_t
+{
+	CMapFace *pFace;				// Pointer to the face.
+	FaceState_t eState;				// The current selection state of this face.
+	FaceState_t eOriginalState;		// The original selection state of this face.
+};
+
+
+//
+// Interface for notification by the face picking tool. Inherit from this if you
+// are a client of the face picker.
+//
+class IPickFaceTarget
+{
+public:
+	virtual void OnNotifyPickFace(CToolPickFace *pTool) = 0;
+};
+
+
+class CToolPickFace : public CBaseTool
+{
+public:
+
+	//
+	// Constructor/Destructor
+	//
+    CToolPickFace();
+    ~CToolPickFace();
+
+	//
+	// CBaseTool virtual implementations
+	//
+	virtual void OnDeactivate();
+	virtual ToolID_t GetToolID(void) { return TOOL_PICK_FACE; }
+
+	virtual bool OnLMouseUp3D(CMapView3D *pView, UINT nFlags, const Vector2D &vPoint);
+    virtual bool OnLMouseDown3D(CMapView3D *pView, UINT nFlags, const Vector2D &vPoint);
+    virtual bool OnLMouseDblClk3D(CMapView3D *pView, UINT nFlags, const Vector2D &vPoint);
+	virtual bool OnRMouseUp3D(CMapView3D *pView, UINT nFlags, const Vector2D &vPoint);
+    virtual bool OnRMouseDown3D(CMapView3D *pView, UINT nFlags, const Vector2D &vPoint);
+	virtual bool OnMouseMove3D(CMapView3D *pView, UINT nFlags, const Vector2D &vPoint);
+
+	//
+	// Functions specific to this tool.
+	//
+	inline void Attach(IPickFaceTarget *pTarget);
+	void AllowMultiSelect(bool bAllow);
+	void GetSelectedFaces(CMapFaceList &FaceListFull, CMapFaceList &FaceListPartial);
+	void SetSelectedFaces(CMapFaceList &FaceListFull, CMapFaceList &FaceListPartial);
+
+protected:
+
+	void CycleSelectFace(CMapFace *pFace);
+	void DeselectAll(void);
+	void DeselectFace(int nIndex);
+	void DeselectFace(CMapFace *pFace);
+	int FindFace(CMapFace *pFace);
+	void SelectFace(CMapFace *pFace);
+
+	void AddToList(CMapFace *pFace, FaceState_t eState);
+	void RemoveFromList(int nIndex);
+
+	void SetEyedropperCursor(void);
+
+	IPickFaceTarget *m_pNotifyTarget;		// Object to notify when selection events occur.
+	bool m_bAllowMultiSelect;				// If false, only one face can be selected at a time.
+	CUtlVector <SelectedFace_t> m_Faces;	// Picked faces and their selection state (partial or full).
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Attaches the given notification target to this tool. That object
+//			will be used for all future notifications and updates by the tool.
+//-----------------------------------------------------------------------------
+void CToolPickFace::Attach(IPickFaceTarget *pNotifyTarget)
+{
+	m_pNotifyTarget = pNotifyTarget;
+}
+
+
+#endif // TOOLPICKFACE_H