// graphview.h - Declaration of CGraphView (the Treemap view)
//
// WinDirStat - Directory Statistics
// Copyright (C) 2003-2005 Bernhard Seifert
// Copyright (C) 2004-2016 WinDirStat team (windirstat.info)
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//

#ifndef __WDS_GRAPHVIEW_H__
#define __WDS_GRAPHVIEW_H__
#pragma once

#include "treemap.h"

class CDirstatDoc;
class CItem;


//
// CGraphView. The treemap window.
//
class CGraphView: public CView, public CTreemap::Callback
{
protected:
    CGraphView();
    DECLARE_DYNCREATE(CGraphView)

public:
    virtual ~CGraphView();

    // CTreemap::Callback
    virtual void TreemapDrawingCallback();

    CDirstatDoc* GetDocument();
    void SuspendRecalculation(bool suspend);
    bool IsShowTreemap();
    void ShowTreemap(bool show);
    void DrawEmptyView();

protected:
    virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
    virtual void OnInitialUpdate();
    virtual void OnDraw(CDC* pDC);
    bool IsDrawn();
    void Inactivate();
    void EmptyView();
    void DrawEmptyView(CDC *pDC);

    void DrawZoomFrame(CDC *pdc, CRect& rc);
    void DrawHighlights(CDC *pdc);

    void DrawHighlightExtension(CDC *pdc);
    void RecurseHighlightExtension(CDC *pdc, const CItem *item);

    void DrawSelection(CDC *pdc);

    void HighlightSelectedItem(CDC *pdc, const CItem *item, bool single);
    void RenderHighlightRectangle(CDC *pdc, CRect& rc);

    bool m_recalculationSuspended;  // True while the user is resizing the window.
    bool m_showTreemap;             // False, if the user switched off the treemap (by F9).
    CSize m_size;                   // Current size of view
    CTreemap m_treemap;             // Treemap generator
    CBitmap m_bitmap;               // Cached view. If m_hObject is NULL, the view must be recalculated.
    CSize m_dimmedSize;             // Size of bitmap m_dimmed
    CBitmap m_dimmed;               // Dimmed view. Used during refresh to avoid the ooops-effect.
    UINT_PTR m_timer;               // We need a timer to realize when the mouse left our window.

    DECLARE_MESSAGE_MAP()
    afx_msg void OnSize(UINT nType, int cx, int cy);
    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
    afx_msg void OnSetFocus(CWnd* pOldWnd);
    virtual void OnUpdate(CView * pSender, LPARAM lHint, CObject *pHint);
    afx_msg void OnContextMenu(CWnd *pWnd, CPoint point);
    afx_msg void OnMouseMove(UINT nFlags, CPoint point);
    afx_msg void OnDestroy();
    afx_msg void OnTimer(UINT_PTR nIDEvent);

public:
    #ifdef _DEBUG
        virtual void AssertValid() const;
        virtual void Dump(CDumpContext& dc) const;
    #endif
        afx_msg void OnPopupCancel();
};

#ifndef _DEBUG  // Debugversion in graphview.cpp
inline CDirstatDoc* CGraphView::GetDocument()
   { return reinterpret_cast<CDirstatDoc*>(m_pDocument); }
#endif

#endif // __WDS_GRAPHVIEW_H__
