bmpbuttn.cpp

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    int wBmp   = bitmap->GetWidth();
    int hBmp   = bitmap->GetHeight();

#if wxUSE_UXTHEME
    if ( autoDraw && wxUxThemeEngine::GetIfActive() )
    {
        MSWDrawXPBackground(this, item);
        wxUxThemeHandle theme(this, L"BUTTON");

        // calculate content area margins
        // assuming here that each state is the same size
        MARGINS margins;
        wxUxThemeEngine::Get()->GetThemeMargins(theme, NULL,
                                                BP_PUSHBUTTON, PBS_NORMAL,
                                                TMT_CONTENTMARGINS, NULL,
                                                &margins);
        int marginX = margins.cxLeftWidth + 1;
        int marginY = margins.cyTopHeight + 1;
        int x1,y1;

        if ( m_windowStyle & wxBU_LEFT )
        {
            x1 = x + marginX;
        }
        else if ( m_windowStyle & wxBU_RIGHT )
        {
            x1 = x + (width - wBmp) - marginX;
        }
        else
        {
            x1 = x + (width - wBmp) / 2;
        }

        if ( m_windowStyle & wxBU_TOP )
        {
            y1 = y + marginY;
        }
        else if ( m_windowStyle & wxBU_BOTTOM )
        {
            y1 = y + (height - hBmp) - marginY;
        }
        else
        {
            y1 = y + (height - hBmp) / 2;
        }

        // draw the bitmap
        wxDC dst;
        dst.SetHDC((WXHDC) hDC, false);
        dst.DrawBitmap(*bitmap, x1, y1, true);

        return true;
    }
#endif // wxUSE_UXTHEME

    int x1,y1;

    if(m_windowStyle & wxBU_LEFT)
        x1 = x + (FOCUS_MARGIN+1);
    else if(m_windowStyle & wxBU_RIGHT)
        x1 = x + (width - wBmp) - (FOCUS_MARGIN+1);
    else
        x1 = x + (width - wBmp) / 2;

    if(m_windowStyle & wxBU_TOP)
        y1 = y + (FOCUS_MARGIN+1);
    else if(m_windowStyle & wxBU_BOTTOM)
        y1 = y + (height - hBmp) - (FOCUS_MARGIN+1);
    else
        y1 = y + (height - hBmp) / 2;

    if ( isSelected && autoDraw )
    {
        x1++;
        y1++;
    }

    // draw the face, if auto-drawing
    if ( autoDraw )
    {
        DrawFace((WXHDC) hDC,
                 lpDIS->rcItem.left, lpDIS->rcItem.top,
                 lpDIS->rcItem.right, lpDIS->rcItem.bottom,
                 isSelected);
    }

    // draw the bitmap
    wxDC dst;
    dst.SetHDC((WXHDC) hDC, false);
    dst.DrawBitmap(*bitmap, x1, y1, true);

    // draw focus / disabled state, if auto-drawing
    if ( (state & ODS_DISABLED) && autoDraw )
    {
        DrawButtonDisable((WXHDC) hDC,
                          lpDIS->rcItem.left, lpDIS->rcItem.top,
                          lpDIS->rcItem.right, lpDIS->rcItem.bottom,
                          true);
    }
    else if ( (state & ODS_FOCUS) && autoDraw )
    {
        DrawButtonFocus((WXHDC) hDC,
                        lpDIS->rcItem.left,
                        lpDIS->rcItem.top,
                        lpDIS->rcItem.right,
                        lpDIS->rcItem.bottom,
                        isSelected);
    }

    return true;
}

// GRG Feb/2000, support for bmp buttons with Win95/98 standard LNF

#if defined(__WIN95__)

void wxBitmapButton::DrawFace( WXHDC dc, int left, int top,
    int right, int bottom, bool sel )
{
    HPEN oldp;
    HPEN penHiLight;
    HPEN penLight;
    HPEN penShadow;
    HPEN penDkShadow;
    HBRUSH brushFace;

    // create needed pens and brush
    penHiLight  = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DHILIGHT));
    penLight    = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DLIGHT));
    penShadow   = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DSHADOW));
    penDkShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DDKSHADOW));
    brushFace   = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));

    // draw the rectangle
    RECT rect;
    rect.left   = left;
    rect.right  = right;
    rect.top    = top;
    rect.bottom = bottom;
    FillRect((HDC) dc, &rect, brushFace);

    // draw the border
    oldp = (HPEN) SelectObject( (HDC) dc, sel? penDkShadow : penHiLight);

    wxDrawLine((HDC) dc, left, top, right-1, top);
    wxDrawLine((HDC) dc, left, top+1, left, bottom-1);

    SelectObject( (HDC) dc, sel? penShadow : penLight);
    wxDrawLine((HDC) dc, left+1, top+1, right-2, top+1);
    wxDrawLine((HDC) dc, left+1, top+2, left+1, bottom-2);

    SelectObject( (HDC) dc, sel? penLight : penShadow);
    wxDrawLine((HDC) dc, left+1, bottom-2, right-1, bottom-2);
    wxDrawLine((HDC) dc, right-2, bottom-3, right-2, top);

    SelectObject( (HDC) dc, sel? penHiLight : penDkShadow);
    wxDrawLine((HDC) dc, left, bottom-1, right+2, bottom-1);
    wxDrawLine((HDC) dc, right-1, bottom-2, right-1, top-1);

    // delete allocated resources
    SelectObject((HDC) dc,oldp);
    DeleteObject(penHiLight);
    DeleteObject(penLight);
    DeleteObject(penShadow);
    DeleteObject(penDkShadow);
    DeleteObject(brushFace);
}

#else

void wxBitmapButton::DrawFace( WXHDC dc, int left, int top,
    int right, int bottom, bool sel )
{
    HPEN oldp;
    HPEN penBorder;
    HPEN penLight;
    HPEN penShadow;
    HBRUSH brushFace;

    // create needed pens and brush
    penBorder = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOWFRAME));
    penShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_BTNSHADOW));
    penLight  = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_BTNHIGHLIGHT));
    brushFace = CreateSolidBrush(COLOR_BTNFACE);

    // draw the rectangle
    RECT rect;
    rect.left   = left;
    rect.right  = right;
    rect.top    = top;
    rect.bottom = bottom;
    FillRect((HDC) dc, &rect, brushFace);

    // draw the border
    oldp = (HPEN) SelectObject( (HDC) dc, penBorder);
    MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
    MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
    MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
    MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);

    SelectObject( (HDC) dc, penShadow);
    if (sel)
    {
        MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
        LineTo((HDC) dc,  left+1    ,top+1);
        LineTo((HDC) dc,  right-2   ,top+1);
    }
    else
    {
        MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
        LineTo((HDC) dc,  right-2   ,bottom-2);
        LineTo((HDC) dc,  right-2   ,top);

        MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL);
        LineTo((HDC) dc,  right-3   ,bottom-3);
        LineTo((HDC) dc,  right-3   ,top+1);

        SelectObject( (HDC) dc, penLight);

        MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
        LineTo((HDC) dc,  left+1    ,top+1);
        LineTo((HDC) dc,  right-2   ,top+1);
    }

    // delete allocated resources
    SelectObject((HDC) dc,oldp);
    DeleteObject(penBorder);
    DeleteObject(penLight);
    DeleteObject(penShadow);
    DeleteObject(brushFace);
}

#endif // defined(__WIN95__)


void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right,
    int bottom, bool WXUNUSED(sel) )
{
    RECT rect;
    rect.left = left;
    rect.top = top;
    rect.right = right;
    rect.bottom = bottom;
    InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN );

    // GRG: the focus rectangle should not move when the button is pushed!
/*
    if ( sel )
        OffsetRect( &rect, 1, 1 );
*/

    DrawFocusRect( (HDC) dc, &rect );
}

void
wxBitmapButton::DrawButtonDisable( WXHDC dc,
                                   int left, int top, int right, int bottom,
                                   bool with_marg )
{
    if ( !m_brushDisabled.Ok() )
    {
        // draw a bitmap with two black and two background colour pixels
        wxBitmap bmp(2, 2);
        wxMemoryDC dc;
        dc.SelectObject(bmp);
        dc.SetPen(*wxBLACK_PEN);
        dc.DrawPoint(0, 0);
        dc.DrawPoint(1, 1);
        dc.SetPen(GetBackgroundColour());
        dc.DrawPoint(0, 1);
        dc.DrawPoint(1, 0);

        m_brushDisabled = wxBrush(bmp);
    }

    SelectInHDC selectBrush((HDC)dc, GetHbrushOf(m_brushDisabled));

    // ROP for "dest |= pattern" operation -- as it doesn't have a standard
    // name, give it our own
    static const DWORD PATTERNPAINT = 0xFA0089UL;

    if ( with_marg )
    {
        left += m_marginX;
        top += m_marginY;
        right -= 2 * m_marginX;
        bottom -= 2 * m_marginY;
    }

    ::PatBlt( (HDC) dc, left, top, right, bottom, PATTERNPAINT);
}

void wxBitmapButton::SetDefault()
{
    wxButton::SetDefault();
}

wxSize wxBitmapButton::DoGetBestSize() const
{
    if ( m_bmpNormal.Ok() )
    {
#if wxUSE_UXTHEME
        if ( (GetWindowStyleFlag() & wxBU_AUTODRAW) && wxUxThemeEngine::GetIfActive() )
        {
            wxUxThemeHandle theme((wxBitmapButton *)this, L"BUTTON");

            // calculate content area margins
            // assuming here that each state is the same size
            MARGINS margins;
            wxUxThemeEngine::Get()->GetThemeMargins(theme, NULL,
                                                    BP_PUSHBUTTON, PBS_NORMAL,
                                                    TMT_CONTENTMARGINS, NULL,
                                                    &margins);
            wxSize best(m_bmpNormal.GetWidth() + 2 * (margins.cxLeftWidth + 1),
                        m_bmpNormal.GetHeight() + 2* (margins.cyTopHeight + 1));
            CacheBestSize(best);
            return best;
        }
#endif // wxUSE_UXTHEME

        wxSize best(m_bmpNormal.GetWidth() + 2*m_marginX,
                      m_bmpNormal.GetHeight() + 2*m_marginY);
        CacheBestSize(best);
        return best;
    }

    // no idea what our best size should be, defer to the base class
    return wxBitmapButtonBase::DoGetBestSize();
}

#endif // wxUSE_BMPBUTTON