// TortoiseMerge - a Diff/Patch program

// Copyright (C) 2006, 2008, 2021 - TortoiseSVN

// 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,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#pragma once

class CMainFrame;

/**
 * \ingroup TortoiseMerge
 *
 * A Toolbar showing the differences in the views. The Toolbar
 * is best attached to the left of the mainframe. The Toolbar
 * also scrolls the views to the location the user clicks
 * on the bar.
 */
class CLineDiffBar : public CPaneDialog
{
    DECLARE_DYNAMIC(CLineDiffBar)

public:
    CLineDiffBar();
    ~CLineDiffBar() override;
    // ReSharper disable once CppHidingFunction
    BOOL Create(CWnd* pParentWnd, UINT nIDTemplate, UINT nStyle, UINT nID)
    {
        BOOL bRet           = CPaneDialog::Create(pParentWnd, nIDTemplate, nStyle, nID);
        m_dwControlBarStyle = 0; // can't float, resize, close, slide
        return bRet;
    }

    CSize CalcFixedLayout(BOOL, BOOL) override
    {
        return CSize(32767, 2 * m_nLineHeight);
    }

    void ShowLines(int nLineIndex);
    void DocumentUpdated();

protected:
    afx_msg void OnPaint();
    afx_msg void OnSize(UINT nType, int cx, int cy);
    afx_msg BOOL OnEraseBkgnd(CDC* pDC);

    CBitmap* m_pCacheBitmap;

    int m_nLineIndex;
    int m_nLineHeight;

    DECLARE_MESSAGE_MAP()
public:
    CMainFrame* m_pMainFrm;
};