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hammer/AnchorMgr.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#ifndef ANCHORMGR_H
+#define ANCHORMGR_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "tier1/utlvector.h"
+
+
+enum ESimpleAnchor
+{
+	k_eSimpleAnchorAllSides,	
+	k_eSimpleAnchorBottomRight,		// The whole control follows the bottom right.
+	k_eSimpleAnchorStretchRight,	// Only grow in width.
+	k_eSimpleAnchorRightSide,
+	k_eSimpleAnchorBottomSide
+};
+enum EAnchorHorz
+{
+	k_eAnchorLeft,		// Anchor this side of the control to the left of its parent window.
+	k_eAnchorRight		// Anchor this side of the control to the right of its parent window.
+};
+enum EAnchorVert
+{
+	k_eAnchorTop,		// Anchor this side of the control to the top of its parent window.
+	k_eAnchorBottom		// Anchor this side of the control to the bottom of its parent window.
+};
+
+class CAnchorDef
+{
+public:
+	friend class CAnchorMgr;
+	
+	// You can use the first constructor for simple cases.
+	CAnchorDef() {}
+	CAnchorDef( int dlgItemID, ESimpleAnchor eSimpleAnchor );
+	CAnchorDef( HWND hWnd, ESimpleAnchor eSimpleAnchor );
+
+	CAnchorDef( int dlgItemID, EAnchorHorz eLeftSide=k_eAnchorLeft, EAnchorVert eTopSide=k_eAnchorTop, EAnchorHorz eRightSide=k_eAnchorRight, EAnchorVert eBottomSide=k_eAnchorBottom );
+	CAnchorDef( HWND hWnd, EAnchorHorz eLeftSide=k_eAnchorLeft, EAnchorVert eTopSide=k_eAnchorTop, EAnchorHorz eRightSide=k_eAnchorRight, EAnchorVert eBottomSide=k_eAnchorBottom );
+
+	// Only one of hWnd or dlgItemID should be set.
+	void Init( HWND hWnd, int dlgItemID, ESimpleAnchor eSimpleAnchor );
+	void Init( HWND hWnd, int dlgItemID, EAnchorHorz eLeftSide, EAnchorVert eTopSide, EAnchorHorz eRightSide, EAnchorVert eBottomSide );
+
+public:
+	int m_DlgItemID;
+	HWND m_hInputWnd;	// Either this or m_DlgItemID is set.
+	EAnchorHorz m_AnchorLeft, m_AnchorRight;
+	EAnchorVert m_AnchorTop, m_AnchorBottom;
+
+private:
+	int m_OriginalPos[4];	// left, top, right, bottom
+	HWND m_hWnd;
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: This class helps a resizable window resize and move its controls
+// whenever the window is resized. First, you call Init() to tell it how
+// you want all the child windows anchored, then just call OnSize() whenever
+// the parent window is sized.
+//-----------------------------------------------------------------------------
+class CAnchorMgr
+{
+public:
+	CAnchorMgr();
+	void Init( HWND hParentWnd, CAnchorMgr::CAnchorDef *pAnchors, int nAnchors );
+
+	// Call this when the parent window's size changes and it'll resize all the subcontrols.
+	void OnSize();
+	
+private:
+	CUtlVector<CAnchorMgr::CAnchorDef> m_Anchors;	
+	HWND m_hParentWnd;
+	int m_OriginalParentSize[2];	// wide, tall
+};
+
+
+#endif // ANCHORMGR_H