Bevel.cpp

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#include "StdAfx.h"
//--------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------
//
//
//                                                  WTL Control Library
//                                                           by
//                                            Bright Ideas Software®
//                               Copyright © 2018 by Bright Ideas Software.
//
//
//
//--------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------


namespace BIS_WTL_CONTROLS
{
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    CBevel::CBevel() noexcept
    {
        m_bsBevel = CBevelStyle::bsSunken;
        m_bmMode = CBevelMode::bmHorizontal;

        m_hLitePen = NULL;
        m_hDarkPen = NULL;

        m_bMsgHandled = FALSE;
    }
    //----------------------------------------------------------------------------------------------
    CBevel::~CBevel()
    {
        ATLASSERT( m_hWnd == NULL);
        DeletePens();
    }
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    void CBevel::SubclassStatic(HWND hwnd)
    {
        CWindowImpl<CBevel, CStatic>::SubclassWindow(hwnd);

        ModifyStyle(WS_BORDER | WS_DLGFRAME | SS_ETCHEDFRAME | SS_ETCHEDVERT | 
                                                                                            SS_ETCHEDHORZ   | SS_WHITEFRAME, 0);
        ModifyStyleEx(0, WS_EX_TRANSPARENT);
        UpdatePens();
    }
    //----------------------------------------------------------------------------------------------
    void CBevel::UnSubclassStatic()
    {
        UnsubclassWindow();
        DeletePens();
    }
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    CBevelStyle CBevel::GetBevelStyle() const
    {
        return(m_bsBevel);
    }
    //----------------------------------------------------------------------------------------------
    void CBevel::SetBevelStyle(CBevelStyle style)
    {
        m_bsBevel = style;
    }
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    CBevelMode CBevel::GetBevelMode() const
    {
        return(m_bmMode);
    }
    //----------------------------------------------------------------------------------------------
    void CBevel::SetBevelMode(CBevelMode mode)
    {
        m_bmMode = mode;    
    }
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    //
    //                                                      Private Methods
    //
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    void CBevel::UpdatePens()
    {
        if ((m_hLitePen != NULL) || (m_hDarkPen != NULL))
            DeletePens();

        m_hLitePen = ::CreatePen(PS_SOLID, 1, ::GetSysColor(COLOR_BTNHIGHLIGHT));
        m_hDarkPen = ::CreatePen(PS_SOLID, 1, ::GetSysColor(COLOR_3DDKSHADOW));

    }
    //----------------------------------------------------------------------------------------------
    void CBevel::DeletePens()
    {
        if (m_hLitePen != NULL)
        {
            ::DeleteObject(m_hLitePen);
            m_hLitePen = NULL;
        }

        if (m_hDarkPen !=  NULL)
        {
            ::DeleteObject(m_hDarkPen);
            m_hDarkPen = NULL;
        }
    }
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    //
    //                                                  Message Handlers
    //
    //----------------------------------------------------------------------------------------------
    //----------------------------------------------------------------------------------------------
    LRESULT CBevel::OnPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
    {

        CRect rect;

        HDC dc = NULL;
        bool do_end_paint = false;
        PAINTSTRUCT ps;

        if (wParam != NULL)
            dc = (HDC)wParam;
        else
        {
            RECT update_rect{ 0 };
            if (GetUpdateRect(&update_rect) != 0)
            {
                dc = BeginPaint(&ps);
                do_end_paint = true;
            }
        }

        if (dc == NULL)
            return(0);

        GetWindowRect(&rect);      
        ScreenToClient(&rect);

        int w = rect.Width();
        int h = rect.Height();

        if ((m_hLitePen == NULL)||(m_hDarkPen == NULL))
            UpdatePens();

        if ((m_hLitePen == NULL) || (m_hDarkPen == NULL))
            return(0);

        FillRect(dc, &rect, (HBRUSH)GetStockObject(HOLLOW_BRUSH));

        if (m_bsBevel > CBevelStyle::bsLine)
        {

            HPEN oldpen = (HPEN)::SelectObject(dc, m_hDarkPen);

            if (m_bmMode == CBevelMode::bmHorizontal)
            {
                if (m_bsBevel == CBevelStyle::bsSunken)
                {
                    ::MoveToEx(dc, 0, 0, NULL);
                    ::LineTo(dc, w, 0);
                }
                else
                {
                    ::MoveToEx(dc, 0, 1, NULL);
                    ::LineTo(dc, w, 1);
                }
            }
            else
            {
                if (m_bsBevel == CBevelStyle::bsSunken)
                {
                    ::MoveToEx(dc, 0, 0, NULL);
                    ::LineTo(dc, 0, h);
                }
                else
                {
                    ::MoveToEx(dc, 1, 0, NULL);
                    ::LineTo(dc, 1, h);
                }
            }


            ::SelectObject(dc, oldpen);
            oldpen = (HPEN)::SelectObject(dc, m_hLitePen);

            if (m_bmMode == CBevelMode::bmHorizontal)
            {
                if (m_bsBevel == CBevelStyle::bsRaised)
                {
                    ::MoveToEx(dc, 0, 0, NULL);
                    ::LineTo(dc, w, 0);
                }
                else
                {
                    ::MoveToEx(dc, 0, 1, NULL);
                    ::LineTo(dc, w, 1);
                }
            }
            else
            {
                if (m_bsBevel == CBevelStyle::bsRaised)
                {
                    ::MoveToEx(dc, 0, 0, NULL);
                    ::LineTo(dc, 0, h);
                }
                else
                {
                    ::MoveToEx(dc, 1, 0, NULL);
                    ::LineTo(dc, 1, h);
                }
            }
            ::SelectObject(dc, oldpen);


        }
        else if (m_bsBevel == CBevelStyle::bsLine)
        {
            ::MoveToEx(dc, 0, 0, NULL);
            if (m_bmMode == CBevelMode::bmHorizontal)
                ::LineTo(dc, w, 0);
            else
                ::LineTo(dc, 0, h);
        }

        if (do_end_paint == true)
            EndPaint(&ps);

        return(0);
    }
    //----------------------------------------------------------------------------------------------
    BOOL CBevel::OnEraseBkgnd(CDCHandle dc)
    {
        return(TRUE);
    }
    //----------------------------------------------------------------------------------------------
    void CBevel::OnSysColorChange()
    {
        UpdatePens();
        Invalidate();
        UpdateWindow();
    }
    //----------------------------------------------------------------------------------------------
};