src/msw/ownerdrw.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/ownerdrw.cpp
// Purpose:     implementation of wxOwnerDrawn class
// Author:      Vadim Zeitlin
// Modified by:
// Created:     13.11.97
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/window.h"
    #include "wx/msw/private.h"
    #include "wx/font.h"
    #include "wx/bitmap.h"
    #include "wx/image.h"
    #include "wx/dcmemory.h"
    #include "wx/menu.h"
    #include "wx/utils.h"
    #include "wx/settings.h"
    #include "wx/menuitem.h"
    #include "wx/module.h"
#endif

#include "wx/ownerdrw.h"
#include "wx/fontutil.h"

#if wxUSE_OWNER_DRAWN

#ifndef SPI_GETKEYBOARDCUES
#define SPI_GETKEYBOARDCUES 0x100A
#endif

class wxMSWSystemMenuFontModule : public wxModule
{
public:

    virtual bool OnInit()
    {
        ms_systemMenuFont = new wxFont;

#if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK)
        NONCLIENTMETRICS nm;
        nm.cbSize = sizeof(NONCLIENTMETRICS);
        SystemParametersInfo(SPI_GETNONCLIENTMETRICS,0,&nm,0);

        ms_systemMenuButtonWidth = nm.iMenuHeight;
        ms_systemMenuHeight = nm.iMenuHeight;

        // create menu font
        wxNativeFontInfo info;
        memcpy(&info.lf, &nm.lfMenuFont, sizeof(LOGFONT));
        ms_systemMenuFont->Create(info);

        if (SystemParametersInfo(SPI_GETKEYBOARDCUES, 0, &ms_showCues, 0) == 0)
            ms_showCues = true;
#endif

        return true;
    }

    virtual void OnExit()
    {
        delete ms_systemMenuFont;
        ms_systemMenuFont = NULL;
    }

    static wxFont* ms_systemMenuFont;
    static int ms_systemMenuButtonWidth;   // windows clean install default
    static int ms_systemMenuHeight;        // windows clean install default
    static bool ms_showCues;
private:
    DECLARE_DYNAMIC_CLASS(wxMSWSystemMenuFontModule)
};

// these static variables are from the wxMSWSystemMenuFontModule object
// and reflect the system settings returned by the Win32 API's
// SystemParametersInfo() call.

wxFont* wxMSWSystemMenuFontModule::ms_systemMenuFont = NULL;
int wxMSWSystemMenuFontModule::ms_systemMenuButtonWidth = 18;   // windows clean install default
int wxMSWSystemMenuFontModule::ms_systemMenuHeight = 18;        // windows clean install default
bool wxMSWSystemMenuFontModule::ms_showCues = true;

IMPLEMENT_DYNAMIC_CLASS(wxMSWSystemMenuFontModule, wxModule)


// VC++ 6 gives a warning here:
//
//      return type for 'OwnerDrawnSet_wxImplementation_HashTable::iterator::
//      operator ->' is 'class wxOwnerDrawn ** ' (ie; not a UDT or reference to
//      a UDT.  Will produce errors if applied using infix notation.
//
// shut it down
#if defined __VISUALC__ && __VISUALC__ <= 1300
    #if __VISUALC__ >= 1200
        #pragma warning(push)
        #define POP_WARNINGS
    #endif
    #pragma warning(disable: 4284)
#endif

#include "wx/hashset.h"
WX_DECLARE_HASH_SET(wxOwnerDrawn*, wxPointerHash, wxPointerEqual, OwnerDrawnSet);

#ifdef POP_WARNINGS
    #pragma warning(pop)
#endif

// ============================================================================
// implementation of wxOwnerDrawn class
// ============================================================================

// ctor
// ----
wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
                           bool bCheckable,
                           bool bMenuItem)
            : m_strName(str)
{
    if ( ms_nDefaultMarginWidth == 0 )
    {
       ms_nDefaultMarginWidth = ::GetSystemMetrics(SM_CXMENUCHECK) +
                                wxSystemSettings::GetMetric(wxSYS_EDGE_X);
       ms_nLastMarginWidth = ms_nDefaultMarginWidth;
    }

    m_bCheckable   = bCheckable;
    m_bOwnerDrawn  = false;
    m_isMenuItem   = bMenuItem;
    m_nHeight      = 0;
    m_nMarginWidth = ms_nLastMarginWidth;
    m_nMinHeight   = wxMSWSystemMenuFontModule::ms_systemMenuHeight;
}

wxOwnerDrawn::~wxOwnerDrawn()
{
}

bool wxOwnerDrawn::IsMenuItem() const
{
    return m_isMenuItem;
}


// these items will be set during the first invocation of the c'tor,
// because the values will be determined by checking the system settings,
// which is a chunk of code
size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;


// drawing
// -------

wxFont wxOwnerDrawn::GetFontToUse() const
{
    wxFont font = m_font;
    if ( !font.Ok() )
    {
        if ( IsMenuItem() )
            font = *wxMSWSystemMenuFontModule::ms_systemMenuFont;

        if ( !font.Ok() )
            font = *wxNORMAL_FONT;
    }

    return font;
}

// get size of the item
// The item size includes the menu string, the accel string,
// the bitmap and size for a submenu expansion arrow...
bool wxOwnerDrawn::OnMeasureItem(size_t *pwidth, size_t *pheight)
{
    if ( IsOwnerDrawn() )
    {
        wxMemoryDC dc;

        wxString str = wxStripMenuCodes(m_strName);

        // if we have a valid accel string, then pad out
        // the menu string so that the menu and accel string are not
        // placed on top of each other.
        if ( !m_strAccel.empty() )
        {
            str.Pad(str.length()%8);
            str += m_strAccel;
        }

        dc.SetFont(GetFontToUse());

        wxCoord w, h;
        dc.GetTextExtent(str, &w, &h);
        *pwidth = w;
        *pheight = h;

        // add space at the end of the menu for the submenu expansion arrow
        // this will also allow offsetting the accel string from the right edge
        *pwidth += GetMarginWidth() + 16;
    }
    else // don't draw the text, just the bitmap (if any)
    {
        *pwidth =
        *pheight = 0;
    }

    // increase size to accommodate bigger bitmaps if necessary
    if (m_bmpChecked.Ok())
    {
        // Is BMP height larger then text height?
        size_t adjustedHeight = m_bmpChecked.GetHeight() +
                                  2*wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
        if (*pheight < adjustedHeight)
            *pheight = adjustedHeight;

        const size_t widthBmp = m_bmpChecked.GetWidth();
        if ( IsOwnerDrawn() )
        {
            // widen the margin to fit the bitmap if necessary
            if ((size_t)GetMarginWidth() < widthBmp)
                SetMarginWidth(widthBmp);
        }
        else // we must allocate enough space for the bitmap
        {
            *pwidth += widthBmp;
        }
    }

    // add a 4-pixel separator, otherwise menus look cluttered
    *pwidth += 4;

    // make sure that this item is at least as tall as the system menu height
    if ( *pheight < m_nMinHeight )
      *pheight = m_nMinHeight;

    // remember height for use in OnDrawItem
    m_nHeight = *pheight;

    return true;
}

// draw the item
bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
                              const wxRect& rc,
                              wxODAction act,
                              wxODStatus st)
{
    // we do nothing on focus change
    if ( act == wxODFocusChanged )
        return true;


    // this flag determines whether or not an edge will
    // be drawn around the bitmap. In most "windows classic"
    // applications, a 1-pixel highlight edge is drawn around
    // the bitmap of an item when it is selected.  However,
    // with the new "luna" theme, no edge is drawn around
    // the bitmap because the background is white (this applies
    // only to "non-XP style" menus w/ bitmaps --
    // see IE 6 menus for an example)

    bool draw_bitmap_edge = true;

    // set the colors
    // --------------
    DWORD colBack, colText;
    if ( st & wxODSelected )
    {
        colBack = GetSysColor(COLOR_HIGHLIGHT);
        if (!(st & wxODDisabled))
        {
            colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
        }
        else
        {
            colText = GetSysColor(COLOR_GRAYTEXT);
        }
    }
    else
    {
        // fall back to default colors if none explicitly specified
        colBack = m_colBack.Ok() ? wxColourToPalRGB(m_colBack)
                                 : GetSysColor(COLOR_MENU);
        colText = m_colText.Ok() ? wxColourToPalRGB(m_colText)
                                 : GetSysColor(COLOR_MENUTEXT);
    }

    if ( IsOwnerDrawn() )
    {
        // don't draw an edge around the bitmap, if background is white ...
        DWORD menu_bg_color = GetSysColor(COLOR_MENU);
        if (    ( GetRValue( menu_bg_color ) >= 0xf0 &&
                  GetGValue( menu_bg_color ) >= 0xf0 &&
                  GetBValue( menu_bg_color ) >= 0xf0 )
          )
        {
            draw_bitmap_edge = false;
        }
    }
    else // edge doesn't look well with default Windows drawing
    {
        draw_bitmap_edge = false;
    }


    HDC hdc = GetHdcOf(dc);
    COLORREF colOldText = ::SetTextColor(hdc, colText),
             colOldBack = ::SetBkColor(hdc, colBack);

    // *2, as in wxSYS_EDGE_Y
    int margin = GetMarginWidth() + 2 * wxSystemSettings::GetMetric(wxSYS_EDGE_X);

    // select the font and draw the text
    // ---------------------------------


    // determine where to draw and leave space for a check-mark.
    // + 1 pixel to separate the edge from the highlight rectangle
    int xText = rc.x + margin + 1;


    // using native API because it recognizes '&'
    if ( IsOwnerDrawn() )
    {
        int nPrevMode = SetBkMode(hdc, TRANSPARENT);
        AutoHBRUSH hbr(colBack);
        SelectInHDC selBrush(hdc, hbr);

        RECT rectFill = { rc.GetLeft(), rc.GetTop(),
                            rc.GetRight() + 1, rc.GetBottom() + 1 };

        if ( (st & wxODSelected) && m_bmpChecked.Ok() && draw_bitmap_edge )
        {
            // only draw the highlight under the text, not under
            // the bitmap or checkmark
            rectFill.left = xText;
        }

        FillRect(hdc, &rectFill, hbr);

        // use default font if no font set
        wxFont fontToUse = GetFontToUse();
        SelectInHDC selFont(hdc, GetHfontOf(fontToUse));

        wxString strMenuText = m_strName.BeforeFirst('\t');

        xText += 3; // separate text from the highlight rectangle

        SIZE sizeRect;
        ::GetTextExtentPoint32(hdc, strMenuText.c_str(), strMenuText.length(), &sizeRect);
        ::DrawState(hdc, NULL, NULL,
                    (LPARAM)strMenuText.wx_str(),
                    strMenuText.length(),
                    xText, rc.y + (int) ((rc.GetHeight()-sizeRect.cy)/2.0), // centre text vertically
                    rc.GetWidth()-margin, sizeRect.cy,
                    DST_PREFIXTEXT |
                    (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0) |
                    (((st & wxODHidePrefix) && !wxMSWSystemMenuFontModule::ms_showCues) ? 512 : 0)); // 512 == DSS_HIDEPREFIX

        // ::SetTextAlign(hdc, TA_RIGHT) doesn't work with DSS_DISABLED or DSS_MONO
        // as the last parameter in DrawState() (at least with Windows98). So we have
        // to take care of right alignment ourselves.
        if ( !m_strAccel.empty() )
        {
            int accel_width, accel_height;
            dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
            // right align accel string with right edge of menu ( offset by the
            // margin width )
            ::DrawState(hdc, NULL, NULL,
                    (LPARAM)m_strAccel.wx_str(),
                    m_strAccel.length(),
                    rc.GetWidth()-16-accel_width, rc.y+(int) ((rc.GetHeight()-sizeRect.cy)/2.0),
                    0, 0,
                    DST_TEXT |
                    (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
        }

        (void)SetBkMode(hdc, nPrevMode);
    }


    // draw the bitmap
    // ---------------
    if ( IsCheckable() && !m_bmpChecked.Ok() )
    {
        if ( st & wxODChecked )
        {
            // what goes on: DrawFrameControl creates a b/w mask,
            // then we copy it to screen to have right colors

            // first create a monochrome bitmap in a memory DC
            HDC hdcMem = CreateCompatibleDC(hdc);
            HBITMAP hbmpCheck = CreateBitmap(margin, m_nHeight, 1, 1, 0);
            SelectObject(hdcMem, hbmpCheck);

            // then draw a check mark into it
            RECT rect = { 0, 0, margin, m_nHeight };
            if ( m_nHeight > 0 )
            {
                ::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
            }

            // finally copy it to screen DC and clean up
            BitBlt(hdc, rc.x, rc.y, margin, m_nHeight, hdcMem, 0, 0, SRCCOPY);

            DeleteDC(hdcMem);
            DeleteObject(hbmpCheck);
        }
    }
    else
    {
        wxBitmap bmp;

        if ( st & wxODDisabled )
        {
            bmp = GetDisabledBitmap();
        }

        if ( !bmp.Ok() )
        {
            // for not checkable bitmaps we should always use unchecked one
            // because their checked bitmap is not set
            bmp = GetBitmap(!IsCheckable() || (st & wxODChecked));

#if wxUSE_IMAGE
            if ( bmp.Ok() && st & wxODDisabled )
            {
                // we need to grey out the bitmap as we don't have any specific
                // disabled bitmap
                wxImage imgGrey = bmp.ConvertToImage().ConvertToGreyscale();
                if ( imgGrey.Ok() )
                    bmp = wxBitmap(imgGrey);
            }
#endif // wxUSE_IMAGE
        }

        if ( bmp.Ok() )
        {
            wxMemoryDC dcMem(&dc);
            dcMem.SelectObjectAsSource(bmp);

            // center bitmap
            int nBmpWidth = bmp.GetWidth(),
                nBmpHeight = bmp.GetHeight();

            // there should be enough space!
            wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));

            int heightDiff = m_nHeight - nBmpHeight;
            dc.Blit(rc.x + (margin - nBmpWidth) / 2,
                    rc.y + heightDiff / 2,
                    nBmpWidth, nBmpHeight,
                    &dcMem, 0, 0, wxCOPY, true /* use mask */);

            if ( ( st & wxODSelected ) && !( st & wxODDisabled ) && draw_bitmap_edge )
            {
                RECT rectBmp = { rc.GetLeft(), rc.GetTop(),
                                 rc.GetLeft() + margin,
                                 rc.GetTop() + m_nHeight };
                SetBkColor(hdc, colBack);

                DrawEdge(hdc, &rectBmp, BDR_RAISEDINNER, BF_RECT);
            }
        }
    }

    ::SetTextColor(hdc, colOldText);
    ::SetBkColor(hdc, colOldBack);

    return true;
}


#endif // wxUSE_OWNER_DRAWN
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/msw/ownerdrw.cpp
	3	// Purpose: implementation of wxOwnerDrawn class
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 13.11.97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// For compilers that support precompilation, includes "wx.h".
	13	#include "wx/wxprec.h"
	14
	15	#ifdef __BORLANDC__
	16	#pragma hdrstop
	17	#endif
	18
	19	#ifndef WX_PRECOMP
	20	#include "wx/window.h"
	21	#include "wx/msw/private.h"
	22	#include "wx/font.h"
	23	#include "wx/bitmap.h"
	24	#include "wx/image.h"
	25	#include "wx/dcmemory.h"
	26	#include "wx/menu.h"
	27	#include "wx/utils.h"
	28	#include "wx/settings.h"
	29	#include "wx/menuitem.h"
	30	#include "wx/module.h"
	31	#endif
	32
	33	#include "wx/ownerdrw.h"
	34	#include "wx/fontutil.h"
	35
	36	#if wxUSE_OWNER_DRAWN
	37
	38	#ifndef SPI_GETKEYBOARDCUES
	39	#define SPI_GETKEYBOARDCUES 0x100A
	40	#endif
	41
	42	class wxMSWSystemMenuFontModule : public wxModule
	43	{
	44	public:
	45
	46	virtual bool OnInit()
	47	{
	48	ms_systemMenuFont = new wxFont;
	49
	50	#if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK)
	51	NONCLIENTMETRICS nm;
	52	nm.cbSize = sizeof(NONCLIENTMETRICS);
	53	SystemParametersInfo(SPI_GETNONCLIENTMETRICS,0,&nm,0);
	54
	55	ms_systemMenuButtonWidth = nm.iMenuHeight;
	56	ms_systemMenuHeight = nm.iMenuHeight;
	57
	58	// create menu font
	59	wxNativeFontInfo info;
	60	memcpy(&info.lf, &nm.lfMenuFont, sizeof(LOGFONT));
	61	ms_systemMenuFont->Create(info);
	62
	63	if (SystemParametersInfo(SPI_GETKEYBOARDCUES, 0, &ms_showCues, 0) == 0)
	64	ms_showCues = true;
	65	#endif
	66
	67	return true;
	68	}
	69
	70	virtual void OnExit()
	71	{
	72	delete ms_systemMenuFont;
	73	ms_systemMenuFont = NULL;
	74	}
	75
	76	static wxFont* ms_systemMenuFont;
	77	static int ms_systemMenuButtonWidth; // windows clean install default
	78	static int ms_systemMenuHeight; // windows clean install default
	79	static bool ms_showCues;
	80	private:
	81	DECLARE_DYNAMIC_CLASS(wxMSWSystemMenuFontModule)
	82	};
	83
	84	// these static variables are from the wxMSWSystemMenuFontModule object
	85	// and reflect the system settings returned by the Win32 API's
	86	// SystemParametersInfo() call.
	87
	88	wxFont* wxMSWSystemMenuFontModule::ms_systemMenuFont = NULL;
	89	int wxMSWSystemMenuFontModule::ms_systemMenuButtonWidth = 18; // windows clean install default
	90	int wxMSWSystemMenuFontModule::ms_systemMenuHeight = 18; // windows clean install default
	91	bool wxMSWSystemMenuFontModule::ms_showCues = true;
	92
	93	IMPLEMENT_DYNAMIC_CLASS(wxMSWSystemMenuFontModule, wxModule)
	94
	95
	96	// VC++ 6 gives a warning here:
	97	//
	98	// return type for 'OwnerDrawnSet_wxImplementation_HashTable::iterator::
	99	// operator ->' is 'class wxOwnerDrawn ** ' (ie; not a UDT or reference to
	100	// a UDT. Will produce errors if applied using infix notation.
	101	//
	102	// shut it down
	103	#if defined __VISUALC__ && __VISUALC__ <= 1300
	104	#if __VISUALC__ >= 1200
	105	#pragma warning(push)
	106	#define POP_WARNINGS
	107	#endif
	108	#pragma warning(disable: 4284)
	109	#endif
	110
	111	#include "wx/hashset.h"
	112	WX_DECLARE_HASH_SET(wxOwnerDrawn*, wxPointerHash, wxPointerEqual, OwnerDrawnSet);
	113
	114	#ifdef POP_WARNINGS
	115	#pragma warning(pop)
	116	#endif
	117
	118	// ============================================================================
	119	// implementation of wxOwnerDrawn class
	120	// ============================================================================
	121
	122	// ctor
	123	// ----
	124	wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
	125	bool bCheckable,
	126	bool bMenuItem)
	127	: m_strName(str)
	128	{
	129	if ( ms_nDefaultMarginWidth == 0 )
	130	{
	131	ms_nDefaultMarginWidth = ::GetSystemMetrics(SM_CXMENUCHECK) +
	132	wxSystemSettings::GetMetric(wxSYS_EDGE_X);
	133	ms_nLastMarginWidth = ms_nDefaultMarginWidth;
	134	}
	135
	136	m_bCheckable = bCheckable;
	137	m_bOwnerDrawn = false;
	138	m_isMenuItem = bMenuItem;
	139	m_nHeight = 0;
	140	m_nMarginWidth = ms_nLastMarginWidth;
	141	m_nMinHeight = wxMSWSystemMenuFontModule::ms_systemMenuHeight;
	142	}
	143
	144	wxOwnerDrawn::~wxOwnerDrawn()
	145	{
	146	}
	147
	148	bool wxOwnerDrawn::IsMenuItem() const
	149	{
	150	return m_isMenuItem;
	151	}
	152
	153
	154	// these items will be set during the first invocation of the c'tor,
	155	// because the values will be determined by checking the system settings,
	156	// which is a chunk of code
	157	size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
	158	size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;
	159
	160
	161	// drawing
	162	// -------
	163
	164	wxFont wxOwnerDrawn::GetFontToUse() const
	165	{
	166	wxFont font = m_font;
	167	if ( !font.Ok() )
	168	{
	169	if ( IsMenuItem() )
	170	font = *wxMSWSystemMenuFontModule::ms_systemMenuFont;
	171
	172	if ( !font.Ok() )
	173	font = *wxNORMAL_FONT;
	174	}
	175
	176	return font;
	177	}
	178
	179	// get size of the item
	180	// The item size includes the menu string, the accel string,
	181	// the bitmap and size for a submenu expansion arrow...
	182	bool wxOwnerDrawn::OnMeasureItem(size_t pwidth, size_t pheight)
	183	{
	184	if ( IsOwnerDrawn() )
	185	{
	186	wxMemoryDC dc;
	187
	188	wxString str = wxStripMenuCodes(m_strName);
	189
	190	// if we have a valid accel string, then pad out
	191	// the menu string so that the menu and accel string are not
	192	// placed on top of each other.
	193	if ( !m_strAccel.empty() )
	194	{
	195	str.Pad(str.length()%8);
	196	str += m_strAccel;
	197	}
	198
	199	dc.SetFont(GetFontToUse());
	200
	201	wxCoord w, h;
	202	dc.GetTextExtent(str, &w, &h);
	203	*pwidth = w;
	204	*pheight = h;
	205
	206	// add space at the end of the menu for the submenu expansion arrow
	207	// this will also allow offsetting the accel string from the right edge
	208	*pwidth += GetMarginWidth() + 16;
	209	}
	210	else // don't draw the text, just the bitmap (if any)
	211	{
	212	*pwidth =
	213	*pheight = 0;
	214	}
	215
	216	// increase size to accommodate bigger bitmaps if necessary
	217	if (m_bmpChecked.Ok())
	218	{
	219	// Is BMP height larger then text height?
	220	size_t adjustedHeight = m_bmpChecked.GetHeight() +
	221	2*wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
	222	if (*pheight < adjustedHeight)
	223	*pheight = adjustedHeight;
	224
	225	const size_t widthBmp = m_bmpChecked.GetWidth();
	226	if ( IsOwnerDrawn() )
	227	{
	228	// widen the margin to fit the bitmap if necessary
	229	if ((size_t)GetMarginWidth() < widthBmp)
	230	SetMarginWidth(widthBmp);
	231	}
	232	else // we must allocate enough space for the bitmap
	233	{
	234	*pwidth += widthBmp;
	235	}
	236	}
	237
	238	// add a 4-pixel separator, otherwise menus look cluttered
	239	*pwidth += 4;
	240
	241	// make sure that this item is at least as tall as the system menu height
	242	if ( *pheight < m_nMinHeight )
	243	*pheight = m_nMinHeight;
	244
	245	// remember height for use in OnDrawItem
	246	m_nHeight = *pheight;
	247
	248	return true;
	249	}
	250
	251	// draw the item
	252	bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
	253	const wxRect& rc,
	254	wxODAction act,
	255	wxODStatus st)
	256	{
	257	// we do nothing on focus change
	258	if ( act == wxODFocusChanged )
	259	return true;
	260
	261
	262	// this flag determines whether or not an edge will
	263	// be drawn around the bitmap. In most "windows classic"
	264	// applications, a 1-pixel highlight edge is drawn around
	265	// the bitmap of an item when it is selected. However,
	266	// with the new "luna" theme, no edge is drawn around
	267	// the bitmap because the background is white (this applies
	268	// only to "non-XP style" menus w/ bitmaps --
	269	// see IE 6 menus for an example)
	270
	271	bool draw_bitmap_edge = true;
	272
	273	// set the colors
	274	// --------------
	275	DWORD colBack, colText;
	276	if ( st & wxODSelected )
	277	{
	278	colBack = GetSysColor(COLOR_HIGHLIGHT);
	279	if (!(st & wxODDisabled))
	280	{
	281	colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
	282	}
	283	else
	284	{
	285	colText = GetSysColor(COLOR_GRAYTEXT);
	286	}
	287	}
	288	else
	289	{
	290	// fall back to default colors if none explicitly specified
	291	colBack = m_colBack.Ok() ? wxColourToPalRGB(m_colBack)
	292	: GetSysColor(COLOR_MENU);
	293	colText = m_colText.Ok() ? wxColourToPalRGB(m_colText)
	294	: GetSysColor(COLOR_MENUTEXT);
	295	}
	296
	297	if ( IsOwnerDrawn() )
	298	{
	299	// don't draw an edge around the bitmap, if background is white ...
	300	DWORD menu_bg_color = GetSysColor(COLOR_MENU);
	301	if ( ( GetRValue( menu_bg_color ) >= 0xf0 &&
	302	GetGValue( menu_bg_color ) >= 0xf0 &&
	303	GetBValue( menu_bg_color ) >= 0xf0 )
	304	)
	305	{
	306	draw_bitmap_edge = false;
	307	}
	308	}
	309	else // edge doesn't look well with default Windows drawing
	310	{
	311	draw_bitmap_edge = false;
	312	}
	313
	314
	315	HDC hdc = GetHdcOf(dc);
	316	COLORREF colOldText = ::SetTextColor(hdc, colText),
	317	colOldBack = ::SetBkColor(hdc, colBack);
	318
	319	// *2, as in wxSYS_EDGE_Y
	320	int margin = GetMarginWidth() + 2 * wxSystemSettings::GetMetric(wxSYS_EDGE_X);
	321
	322	// select the font and draw the text
	323	// ---------------------------------
	324
	325
	326	// determine where to draw and leave space for a check-mark.
	327	// + 1 pixel to separate the edge from the highlight rectangle
	328	int xText = rc.x + margin + 1;
	329
	330
	331	// using native API because it recognizes '&'
	332	if ( IsOwnerDrawn() )
	333	{
	334	int nPrevMode = SetBkMode(hdc, TRANSPARENT);
	335	AutoHBRUSH hbr(colBack);
	336	SelectInHDC selBrush(hdc, hbr);
	337
	338	RECT rectFill = { rc.GetLeft(), rc.GetTop(),
	339	rc.GetRight() + 1, rc.GetBottom() + 1 };
	340
	341	if ( (st & wxODSelected) && m_bmpChecked.Ok() && draw_bitmap_edge )
	342	{
	343	// only draw the highlight under the text, not under
	344	// the bitmap or checkmark
	345	rectFill.left = xText;
	346	}
	347
	348	FillRect(hdc, &rectFill, hbr);
	349
	350	// use default font if no font set
	351	wxFont fontToUse = GetFontToUse();
	352	SelectInHDC selFont(hdc, GetHfontOf(fontToUse));
	353
	354	wxString strMenuText = m_strName.BeforeFirst('\t');
	355
	356	xText += 3; // separate text from the highlight rectangle
	357
	358	SIZE sizeRect;
	359	::GetTextExtentPoint32(hdc, strMenuText.c_str(), strMenuText.length(), &sizeRect);
	360	::DrawState(hdc, NULL, NULL,
	361	(LPARAM)strMenuText.wx_str(),
	362	strMenuText.length(),
	363	xText, rc.y + (int) ((rc.GetHeight()-sizeRect.cy)/2.0), // centre text vertically
	364	rc.GetWidth()-margin, sizeRect.cy,
	365	DST_PREFIXTEXT \|
	366	(((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0) \|
	367	(((st & wxODHidePrefix) && !wxMSWSystemMenuFontModule::ms_showCues) ? 512 : 0)); // 512 == DSS_HIDEPREFIX
	368
	369	// ::SetTextAlign(hdc, TA_RIGHT) doesn't work with DSS_DISABLED or DSS_MONO
	370	// as the last parameter in DrawState() (at least with Windows98). So we have
	371	// to take care of right alignment ourselves.
	372	if ( !m_strAccel.empty() )
	373	{
	374	int accel_width, accel_height;
	375	dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
	376	// right align accel string with right edge of menu ( offset by the
	377	// margin width )
	378	::DrawState(hdc, NULL, NULL,
	379	(LPARAM)m_strAccel.wx_str(),
	380	m_strAccel.length(),
	381	rc.GetWidth()-16-accel_width, rc.y+(int) ((rc.GetHeight()-sizeRect.cy)/2.0),
	382	0, 0,
	383	DST_TEXT \|
	384	(((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
	385	}
	386
	387	(void)SetBkMode(hdc, nPrevMode);
	388	}
	389
	390
	391	// draw the bitmap
	392	// ---------------
	393	if ( IsCheckable() && !m_bmpChecked.Ok() )
	394	{
	395	if ( st & wxODChecked )
	396	{
	397	// what goes on: DrawFrameControl creates a b/w mask,
	398	// then we copy it to screen to have right colors
	399
	400	// first create a monochrome bitmap in a memory DC
	401	HDC hdcMem = CreateCompatibleDC(hdc);
	402	HBITMAP hbmpCheck = CreateBitmap(margin, m_nHeight, 1, 1, 0);
	403	SelectObject(hdcMem, hbmpCheck);
	404
	405	// then draw a check mark into it
	406	RECT rect = { 0, 0, margin, m_nHeight };
	407	if ( m_nHeight > 0 )
	408	{
	409	::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
	410	}
	411
	412	// finally copy it to screen DC and clean up
	413	BitBlt(hdc, rc.x, rc.y, margin, m_nHeight, hdcMem, 0, 0, SRCCOPY);
	414
	415	DeleteDC(hdcMem);
	416	DeleteObject(hbmpCheck);
	417	}
	418	}
	419	else
	420	{
	421	wxBitmap bmp;
	422
	423	if ( st & wxODDisabled )
	424	{
	425	bmp = GetDisabledBitmap();
	426	}
	427
	428	if ( !bmp.Ok() )
	429	{
	430	// for not checkable bitmaps we should always use unchecked one
	431	// because their checked bitmap is not set
	432	bmp = GetBitmap(!IsCheckable() \|\| (st & wxODChecked));
	433
	434	#if wxUSE_IMAGE
	435	if ( bmp.Ok() && st & wxODDisabled )
	436	{
	437	// we need to grey out the bitmap as we don't have any specific
	438	// disabled bitmap
	439	wxImage imgGrey = bmp.ConvertToImage().ConvertToGreyscale();
	440	if ( imgGrey.Ok() )
	441	bmp = wxBitmap(imgGrey);
	442	}
	443	#endif // wxUSE_IMAGE
	444	}
	445
	446	if ( bmp.Ok() )
	447	{
	448	wxMemoryDC dcMem(&dc);
	449	dcMem.SelectObjectAsSource(bmp);
	450
	451	// center bitmap
	452	int nBmpWidth = bmp.GetWidth(),
	453	nBmpHeight = bmp.GetHeight();
	454
	455	// there should be enough space!
	456	wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));
	457
	458	int heightDiff = m_nHeight - nBmpHeight;
	459	dc.Blit(rc.x + (margin - nBmpWidth) / 2,
	460	rc.y + heightDiff / 2,
	461	nBmpWidth, nBmpHeight,
	462	&dcMem, 0, 0, wxCOPY, true /* use mask */);
	463
	464	if ( ( st & wxODSelected ) && !( st & wxODDisabled ) && draw_bitmap_edge )
	465	{
	466	RECT rectBmp = { rc.GetLeft(), rc.GetTop(),
	467	rc.GetLeft() + margin,
	468	rc.GetTop() + m_nHeight };
	469	SetBkColor(hdc, colBack);
	470
	471	DrawEdge(hdc, &rectBmp, BDR_RAISEDINNER, BF_RECT);
	472	}
	473	}
	474	}
	475
	476	::SetTextColor(hdc, colOldText);
	477	::SetBkColor(hdc, colOldBack);
	478
	479	return true;
	480	}
	481
	482
	483	#endif // wxUSE_OWNER_DRAWN