src/msw/checklst.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/checklst.cpp
// Purpose:     implementation of wxCheckListBox class
// Author:      Vadim Zeitlin
// Modified by:
// Created:     16.11.97
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

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

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN

#ifndef WX_PRECOMP
    #include "wx/object.h"
    #include "wx/colour.h"
    #include "wx/font.h"
    #include "wx/bitmap.h"
    #include "wx/window.h"
    #include "wx/listbox.h"
    #include "wx/dcmemory.h"

    #include "wx/settings.h"

    #include "wx/log.h"
#endif

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

#include "wx/msw/wrapwin.h"
#include <windowsx.h>

#include "wx/msw/private.h"

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

// get item (converted to right type)
#define GetItem(n)    ((wxCheckListBoxItem *)(GetItem(n)))

// ============================================================================
// implementation
// ============================================================================


#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxCheckListBoxStyle )

wxBEGIN_FLAGS( wxCheckListBoxStyle )
    // new style border flags, we put them first to
    // use them for streaming out
    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
    wxFLAGS_MEMBER(wxBORDER_RAISED)
    wxFLAGS_MEMBER(wxBORDER_STATIC)
    wxFLAGS_MEMBER(wxBORDER_NONE)

    // old style border flags
    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
    wxFLAGS_MEMBER(wxRAISED_BORDER)
    wxFLAGS_MEMBER(wxSTATIC_BORDER)
    wxFLAGS_MEMBER(wxBORDER)

    // standard window styles
    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
    wxFLAGS_MEMBER(wxWANTS_CHARS)
    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
    wxFLAGS_MEMBER(wxVSCROLL)
    wxFLAGS_MEMBER(wxHSCROLL)

    wxFLAGS_MEMBER(wxLB_SINGLE)
    wxFLAGS_MEMBER(wxLB_MULTIPLE)
    wxFLAGS_MEMBER(wxLB_EXTENDED)
    wxFLAGS_MEMBER(wxLB_HSCROLL)
    wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
    wxFLAGS_MEMBER(wxLB_NEEDED_SB)
    wxFLAGS_MEMBER(wxLB_SORT)
    wxFLAGS_MEMBER(wxLB_OWNERDRAW)

wxEND_FLAGS( wxCheckListBoxStyle )

IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckListBox, wxListBox,"wx/checklst.h")

wxBEGIN_PROPERTIES_TABLE(wxCheckListBox)
    wxEVENT_PROPERTY( Toggle , wxEVT_COMMAND_CHECKLISTBOX_TOGGLED , wxCommandEvent )
    wxPROPERTY_FLAGS( WindowStyle , wxCheckListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , wxLB_OWNERDRAW /*flags*/ , wxT("Helpstring") , wxT("group")) // style
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxCheckListBox)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_4( wxCheckListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )

#else
IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
#endif

// ----------------------------------------------------------------------------
// declaration and implementation of wxCheckListBoxItem class
// ----------------------------------------------------------------------------

class wxCheckListBoxItem : public wxOwnerDrawn
{
friend class WXDLLEXPORT wxCheckListBox;
public:
  // ctor
  wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex);

  // drawing functions
  virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);

  // simple accessors and operations
  bool IsChecked() const { return m_bChecked; }

  void Check(bool bCheck);
  void Toggle() { Check(!IsChecked()); }

  void SendEvent();

private:
  bool            m_bChecked;
  wxCheckListBox *m_pParent;
  size_t          m_nIndex;

  DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
};

wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex)
                  : wxOwnerDrawn(wxEmptyString, true)   // checkable
{
  m_bChecked = false;
  m_pParent  = pParent;
  m_nIndex   = nIndex;

  // we don't initialize m_nCheckHeight/Width vars because it's
  // done in OnMeasure while they are used only in OnDraw and we
  // know that there will always be OnMeasure before OnDraw

  // fix appearance for check list boxes: they don't look quite the same as
  // menu icons
  SetMarginWidth(::GetSystemMetrics(SM_CXMENUCHECK) -
                    2*wxSystemSettings::GetMetric(wxSYS_EDGE_X) + 1);
  SetBackgroundColour(pParent->GetBackgroundColour());
}

bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
                                    wxODAction act, wxODStatus stat)
{
    // first draw the label
    if ( IsChecked() )
        stat = (wxOwnerDrawn::wxODStatus)(stat | wxOwnerDrawn::wxODChecked);

    if ( !wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) )
        return false;


    // now draw the check mark part
    size_t nCheckWidth  = GetDefaultMarginWidth(),
           nCheckHeight = m_pParent->GetItemHeight();

    int x = rc.GetX(),
        y = rc.GetY();

    HDC hdc = (HDC)dc.GetHDC();

    // create pens, brushes &c
    COLORREF colBg = ::GetSysColor(COLOR_WINDOW);
    AutoHPEN hpenBack(colBg),
             hpenGray(RGB(0xc0, 0xc0, 0xc0));

    SelectInHDC selPen(hdc, (HGDIOBJ)hpenBack);
    AutoHBRUSH hbrBack(colBg);
    SelectInHDC selBrush(hdc, hbrBack);

    // erase the background: it could have been filled with the selected colour
    Rectangle(hdc, x, y, x + nCheckWidth + 1, rc.GetBottom() + 1);

    // shift check mark 1 pixel to the right, looks better like this
    x++;

    if ( IsChecked() )
    {
        // first create a monochrome bitmap in a memory DC
        MemoryHDC hdcMem(hdc);
        MonoBitmap hbmpCheck(nCheckWidth, nCheckHeight);
        SelectInHDC selBmp(hdcMem, hbmpCheck);

        // then draw a check mark into it
        RECT rect = { 0, 0, nCheckWidth, nCheckHeight };
        ::DrawFrameControl(hdcMem, &rect,
#ifdef __WXWINCE__
                           DFC_BUTTON, DFCS_BUTTONCHECK
#else
                           DFC_MENU, DFCS_MENUCHECK
#endif
                           );

        // finally copy it to screen DC
        ::BitBlt(hdc, x, y, nCheckWidth, nCheckHeight, hdcMem, 0, 0, SRCCOPY);
    }

    // now we draw the smaller rectangle
    y++;
    nCheckWidth  -= 2;
    nCheckHeight -= 2;

    // draw hollow gray rectangle
    (void)::SelectObject(hdc, (HGDIOBJ)hpenGray);

    SelectInHDC selBrush2(hdc, ::GetStockObject(NULL_BRUSH));
    Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);

    return true;
}

// change the state of the item and redraw it
void wxCheckListBoxItem::Check(bool check)
{
    m_bChecked = check;

    // index may be changed because new items were added/deleted
    if ( m_pParent->GetItemIndex(this) != (int)m_nIndex )
    {
        // update it
        int index = m_pParent->GetItemIndex(this);

        wxASSERT_MSG( index != wxNOT_FOUND, wxT("what does this item do here?") );

        m_nIndex = (size_t)index;
    }

    HWND hwndListbox = (HWND)m_pParent->GetHWND();

    RECT rcUpdate;

    if ( ::SendMessage(hwndListbox, LB_GETITEMRECT,
                       m_nIndex, (LPARAM)&rcUpdate) == LB_ERR )
    {
        wxLogDebug(wxT("LB_GETITEMRECT failed"));
    }

    ::InvalidateRect(hwndListbox, &rcUpdate, FALSE);
}

// send an "item checked" event
void wxCheckListBoxItem::SendEvent()
{
    wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
    event.SetInt(m_nIndex);
    event.SetEventObject(m_pParent);
    m_pParent->ProcessCommand(event);
}

// ----------------------------------------------------------------------------
// implementation of wxCheckListBox class
// ----------------------------------------------------------------------------

// define event table
// ------------------
BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
  EVT_KEY_DOWN(wxCheckListBox::OnKeyDown)
  EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
END_EVENT_TABLE()

// control creation
// ----------------

// def ctor: use Create() to really create the control
wxCheckListBox::wxCheckListBox()
{
}

// ctor which creates the associated control
wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
                               const wxPoint& pos, const wxSize& size,
                               int nStrings, const wxString choices[],
                               long style, const wxValidator& val,
                               const wxString& name)
{
    Create(parent, id, pos, size, nStrings, choices, style, val, name);
}

wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
                               const wxPoint& pos, const wxSize& size,
                               const wxArrayString& choices,
                               long style, const wxValidator& val,
                               const wxString& name)
{
    Create(parent, id, pos, size, choices, style, val, name);
}

bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
                            const wxPoint& pos, const wxSize& size,
                            int n, const wxString choices[],
                            long style,
                            const wxValidator& validator, const wxString& name)
{
    return wxListBox::Create(parent, id, pos, size, n, choices,
                             style | wxLB_OWNERDRAW, validator, name);
}

bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
                            const wxPoint& pos, const wxSize& size,
                            const wxArrayString& choices,
                            long style,
                            const wxValidator& validator, const wxString& name)
{
    return wxListBox::Create(parent, id, pos, size, choices,
                             style | wxLB_OWNERDRAW, validator, name);
}

// misc overloaded methods
// -----------------------

void wxCheckListBox::Delete(int N)
{
    wxCHECK_RET( IsValid(N),
                 wxT("invalid index in wxListBox::Delete") );

    wxListBox::Delete(N);

    // free memory
    delete m_aItems[N];

    m_aItems.RemoveAt(N);
}

bool wxCheckListBox::SetFont( const wxFont &font )
{
    size_t i;
    for ( i = 0; i < m_aItems.GetCount(); i++ )
        m_aItems[i]->SetFont(font);

    wxListBox::SetFont(font);

    return true;
}

// create/retrieve item
// --------------------

// create a check list box item
wxOwnerDrawn *wxCheckListBox::CreateLboxItem(size_t nIndex)
{
  wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
  return pItem;
}

// return item size
// ----------------
bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
{
  if ( wxListBox::MSWOnMeasure(item) ) {
    MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;

    // save item height
    m_nItemHeight = pStruct->itemHeight;

    // add place for the check mark
    pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();

    return true;
  }

  return false;
}

// check items
// -----------

bool wxCheckListBox::IsChecked(size_t uiIndex) const
{
    wxCHECK_MSG( uiIndex < (size_t)GetCount(), false, _T("bad wxCheckListBox index") );

    return GetItem(uiIndex)->IsChecked();
}

void wxCheckListBox::Check(size_t uiIndex, bool bCheck)
{
    wxCHECK_RET( uiIndex < (size_t)GetCount(), _T("bad wxCheckListBox index") );

    GetItem(uiIndex)->Check(bCheck);
}

// process events
// --------------

void wxCheckListBox::OnKeyDown(wxKeyEvent& event)
{
    // what do we do?
    enum
    {
        None,
        Toggle,
        Set,
        Clear
    } oper;

    switch ( event.GetKeyCode() )
    {
        case WXK_SPACE:
            oper = Toggle;
            break;

        case WXK_NUMPAD_ADD:
        case '+':
            oper = Set;
            break;

        case WXK_NUMPAD_SUBTRACT:
        case '-':
            oper = Clear;
            break;

        default:
            oper = None;
    }

    if ( oper != None )
    {
        wxArrayInt selections;
        int count = 0;
        if ( HasMultipleSelection() )
        {
            count = GetSelections(selections);
        }
        else
        {
            int sel = GetSelection();
            if (sel != -1)
            {
                count = 1;
                selections.Add(sel);
            }
        }

        for ( int i = 0; i < count; i++ )
        {
            wxCheckListBoxItem *item = GetItem(selections[i]);
            if ( !item )
            {
                wxFAIL_MSG( _T("no wxCheckListBoxItem?") );
                continue;
            }

            switch ( oper )
            {
                case Toggle:
                    item->Toggle();
                    break;

                case Set:
                case Clear:
                    item->Check( oper == Set );
                    break;

                default:
                    wxFAIL_MSG( _T("what should this key do?") );
            }

            // we should send an event as this has been done by the user and
            // not by the program
            item->SendEvent();
        }
    }
    else // nothing to do
    {
        event.Skip();
    }
}

void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
{
  // clicking on the item selects it, clicking on the checkmark toggles
  if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() ) {
    int nItem = HitTest(event.GetX(), event.GetY());

    if ( nItem != wxNOT_FOUND ) {
      wxCheckListBoxItem *item = GetItem(nItem);
      item->Toggle();
      item->SendEvent();
    }
    //else: it's not an error, just click outside of client zone
  }
  else {
    // implement default behaviour: clicking on the item selects it
    event.Skip();
  }
}

int wxCheckListBox::DoHitTestItem(wxCoord x, wxCoord y) const
{
    int nItem = (int)::SendMessage
                             (
                              (HWND)GetHWND(),
                              LB_ITEMFROMPOINT,
                              0,
                              MAKELPARAM(x, y)
                             );

  return nItem >= (int)m_noItems ? wxNOT_FOUND : nItem;
}


wxSize wxCheckListBox::DoGetBestSize() const
{
    wxSize best = wxListBox::DoGetBestSize();
    best.x += wxOwnerDrawn::GetDefaultMarginWidth();  // add room for the checkbox
    CacheBestSize(best);
    return best;
}

#endif
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/msw/checklst.cpp
	3	// Purpose: implementation of wxCheckListBox class
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 16.11.97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN
	28
	29	#ifndef WX_PRECOMP
	30	#include "wx/object.h"
	31	#include "wx/colour.h"
	32	#include "wx/font.h"
	33	#include "wx/bitmap.h"
	34	#include "wx/window.h"
	35	#include "wx/listbox.h"
	36	#include "wx/dcmemory.h"
	37
	38	#include "wx/settings.h"
	39
	40	#include "wx/log.h"
	41	#endif
	42
	43	#include "wx/ownerdrw.h"
	44	#include "wx/checklst.h"
	45
	46	#include "wx/msw/wrapwin.h"
	47	#include <windowsx.h>
	48
	49	#include "wx/msw/private.h"
	50
	51	// ----------------------------------------------------------------------------
	52	// private functions
	53	// ----------------------------------------------------------------------------
	54
	55	// get item (converted to right type)
	56	#define GetItem(n) ((wxCheckListBoxItem *)(GetItem(n)))
	57
	58	// ============================================================================
	59	// implementation
	60	// ============================================================================
	61
	62
	63	#if wxUSE_EXTENDED_RTTI
	64	WX_DEFINE_FLAGS( wxCheckListBoxStyle )
	65
	66	wxBEGIN_FLAGS( wxCheckListBoxStyle )
	67	// new style border flags, we put them first to
	68	// use them for streaming out
	69	wxFLAGS_MEMBER(wxBORDER_SIMPLE)
	70	wxFLAGS_MEMBER(wxBORDER_SUNKEN)
	71	wxFLAGS_MEMBER(wxBORDER_DOUBLE)
	72	wxFLAGS_MEMBER(wxBORDER_RAISED)
	73	wxFLAGS_MEMBER(wxBORDER_STATIC)
	74	wxFLAGS_MEMBER(wxBORDER_NONE)
	75
	76	// old style border flags
	77	wxFLAGS_MEMBER(wxSIMPLE_BORDER)
	78	wxFLAGS_MEMBER(wxSUNKEN_BORDER)
	79	wxFLAGS_MEMBER(wxDOUBLE_BORDER)
	80	wxFLAGS_MEMBER(wxRAISED_BORDER)
	81	wxFLAGS_MEMBER(wxSTATIC_BORDER)
	82	wxFLAGS_MEMBER(wxBORDER)
	83
	84	// standard window styles
	85	wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
	86	wxFLAGS_MEMBER(wxCLIP_CHILDREN)
	87	wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
	88	wxFLAGS_MEMBER(wxWANTS_CHARS)
	89	wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
	90	wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
	91	wxFLAGS_MEMBER(wxVSCROLL)
	92	wxFLAGS_MEMBER(wxHSCROLL)
	93
	94	wxFLAGS_MEMBER(wxLB_SINGLE)
	95	wxFLAGS_MEMBER(wxLB_MULTIPLE)
	96	wxFLAGS_MEMBER(wxLB_EXTENDED)
	97	wxFLAGS_MEMBER(wxLB_HSCROLL)
	98	wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
	99	wxFLAGS_MEMBER(wxLB_NEEDED_SB)
	100	wxFLAGS_MEMBER(wxLB_SORT)
	101	wxFLAGS_MEMBER(wxLB_OWNERDRAW)
	102
	103	wxEND_FLAGS( wxCheckListBoxStyle )
	104
	105	IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckListBox, wxListBox,"wx/checklst.h")
	106
	107	wxBEGIN_PROPERTIES_TABLE(wxCheckListBox)
	108	wxEVENT_PROPERTY( Toggle , wxEVT_COMMAND_CHECKLISTBOX_TOGGLED , wxCommandEvent )
	109	wxPROPERTY_FLAGS( WindowStyle , wxCheckListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , wxLB_OWNERDRAW /flags/ , wxT("Helpstring") , wxT("group")) // style
	110	wxEND_PROPERTIES_TABLE()
	111
	112	wxBEGIN_HANDLERS_TABLE(wxCheckListBox)
	113	wxEND_HANDLERS_TABLE()
	114
	115	wxCONSTRUCTOR_4( wxCheckListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
	116
	117	#else
	118	IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
	119	#endif
	120
	121	// ----------------------------------------------------------------------------
	122	// declaration and implementation of wxCheckListBoxItem class
	123	// ----------------------------------------------------------------------------
	124
	125	class wxCheckListBoxItem : public wxOwnerDrawn
	126	{
	127	friend class WXDLLEXPORT wxCheckListBox;
	128	public:
	129	// ctor
	130	wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex);
	131
	132	// drawing functions
	133	virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);
	134
	135	// simple accessors and operations
	136	bool IsChecked() const { return m_bChecked; }
	137
	138	void Check(bool bCheck);
	139	void Toggle() { Check(!IsChecked()); }
	140
	141	void SendEvent();
	142
	143	private:
	144	bool m_bChecked;
	145	wxCheckListBox *m_pParent;
	146	size_t m_nIndex;
	147
	148	DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
	149	};
	150
	151	wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex)
	152	: wxOwnerDrawn(wxEmptyString, true) // checkable
	153	{
	154	m_bChecked = false;
	155	m_pParent = pParent;
	156	m_nIndex = nIndex;
	157
	158	// we don't initialize m_nCheckHeight/Width vars because it's
	159	// done in OnMeasure while they are used only in OnDraw and we
	160	// know that there will always be OnMeasure before OnDraw
	161
	162	// fix appearance for check list boxes: they don't look quite the same as
	163	// menu icons
	164	SetMarginWidth(::GetSystemMetrics(SM_CXMENUCHECK) -
	165	2*wxSystemSettings::GetMetric(wxSYS_EDGE_X) + 1);
	166	SetBackgroundColour(pParent->GetBackgroundColour());
	167	}
	168
	169	bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
	170	wxODAction act, wxODStatus stat)
	171	{
	172	// first draw the label
	173	if ( IsChecked() )
	174	stat = (wxOwnerDrawn::wxODStatus)(stat \| wxOwnerDrawn::wxODChecked);
	175
	176	if ( !wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) )
	177	return false;
	178
	179
	180	// now draw the check mark part
	181	size_t nCheckWidth = GetDefaultMarginWidth(),
	182	nCheckHeight = m_pParent->GetItemHeight();
	183
	184	int x = rc.GetX(),
	185	y = rc.GetY();
	186
	187	HDC hdc = (HDC)dc.GetHDC();
	188
	189	// create pens, brushes &c
	190	COLORREF colBg = ::GetSysColor(COLOR_WINDOW);
	191	AutoHPEN hpenBack(colBg),
	192	hpenGray(RGB(0xc0, 0xc0, 0xc0));
	193
	194	SelectInHDC selPen(hdc, (HGDIOBJ)hpenBack);
	195	AutoHBRUSH hbrBack(colBg);
	196	SelectInHDC selBrush(hdc, hbrBack);
	197
	198	// erase the background: it could have been filled with the selected colour
	199	Rectangle(hdc, x, y, x + nCheckWidth + 1, rc.GetBottom() + 1);
	200
	201	// shift check mark 1 pixel to the right, looks better like this
	202	x++;
	203
	204	if ( IsChecked() )
	205	{
	206	// first create a monochrome bitmap in a memory DC
	207	MemoryHDC hdcMem(hdc);
	208	MonoBitmap hbmpCheck(nCheckWidth, nCheckHeight);
	209	SelectInHDC selBmp(hdcMem, hbmpCheck);
	210
	211	// then draw a check mark into it
	212	RECT rect = { 0, 0, nCheckWidth, nCheckHeight };
	213	::DrawFrameControl(hdcMem, &rect,
	214	#ifdef __WXWINCE__
	215	DFC_BUTTON, DFCS_BUTTONCHECK
	216	#else
	217	DFC_MENU, DFCS_MENUCHECK
	218	#endif
	219	);
	220
	221	// finally copy it to screen DC
	222	::BitBlt(hdc, x, y, nCheckWidth, nCheckHeight, hdcMem, 0, 0, SRCCOPY);
	223	}
	224
	225	// now we draw the smaller rectangle
	226	y++;
	227	nCheckWidth -= 2;
	228	nCheckHeight -= 2;
	229
	230	// draw hollow gray rectangle
	231	(void)::SelectObject(hdc, (HGDIOBJ)hpenGray);
	232
	233	SelectInHDC selBrush2(hdc, ::GetStockObject(NULL_BRUSH));
	234	Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);
	235
	236	return true;
	237	}
	238
	239	// change the state of the item and redraw it
	240	void wxCheckListBoxItem::Check(bool check)
	241	{
	242	m_bChecked = check;
	243
	244	// index may be changed because new items were added/deleted
	245	if ( m_pParent->GetItemIndex(this) != (int)m_nIndex )
	246	{
	247	// update it
	248	int index = m_pParent->GetItemIndex(this);
	249
	250	wxASSERT_MSG( index != wxNOT_FOUND, wxT("what does this item do here?") );
	251
	252	m_nIndex = (size_t)index;
	253	}
	254
	255	HWND hwndListbox = (HWND)m_pParent->GetHWND();
	256
	257	RECT rcUpdate;
	258
	259	if ( ::SendMessage(hwndListbox, LB_GETITEMRECT,
	260	m_nIndex, (LPARAM)&rcUpdate) == LB_ERR )
	261	{
	262	wxLogDebug(wxT("LB_GETITEMRECT failed"));
	263	}
	264
	265	::InvalidateRect(hwndListbox, &rcUpdate, FALSE);
	266	}
	267
	268	// send an "item checked" event
	269	void wxCheckListBoxItem::SendEvent()
	270	{
	271	wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
	272	event.SetInt(m_nIndex);
	273	event.SetEventObject(m_pParent);
	274	m_pParent->ProcessCommand(event);
	275	}
	276
	277	// ----------------------------------------------------------------------------
	278	// implementation of wxCheckListBox class
	279	// ----------------------------------------------------------------------------
	280
	281	// define event table
	282	// ------------------
	283	BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
	284	EVT_KEY_DOWN(wxCheckListBox::OnKeyDown)
	285	EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
	286	END_EVENT_TABLE()
	287
	288	// control creation
	289	// ----------------
	290
	291	// def ctor: use Create() to really create the control
	292	wxCheckListBox::wxCheckListBox()
	293	{
	294	}
	295
	296	// ctor which creates the associated control
	297	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	298	const wxPoint& pos, const wxSize& size,
	299	int nStrings, const wxString choices[],
	300	long style, const wxValidator& val,
	301	const wxString& name)
	302	{
	303	Create(parent, id, pos, size, nStrings, choices, style, val, name);
	304	}
	305
	306	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	307	const wxPoint& pos, const wxSize& size,
	308	const wxArrayString& choices,
	309	long style, const wxValidator& val,
	310	const wxString& name)
	311	{
	312	Create(parent, id, pos, size, choices, style, val, name);
	313	}
	314
	315	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	316	const wxPoint& pos, const wxSize& size,
	317	int n, const wxString choices[],
	318	long style,
	319	const wxValidator& validator, const wxString& name)
	320	{
	321	return wxListBox::Create(parent, id, pos, size, n, choices,
	322	style \| wxLB_OWNERDRAW, validator, name);
	323	}
	324
	325	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	326	const wxPoint& pos, const wxSize& size,
	327	const wxArrayString& choices,
	328	long style,
	329	const wxValidator& validator, const wxString& name)
	330	{
	331	return wxListBox::Create(parent, id, pos, size, choices,
	332	style \| wxLB_OWNERDRAW, validator, name);
	333	}
	334
	335	// misc overloaded methods
	336	// -----------------------
	337
	338	void wxCheckListBox::Delete(int N)
	339	{
	340	wxCHECK_RET( IsValid(N),
	341	wxT("invalid index in wxListBox::Delete") );
	342
	343	wxListBox::Delete(N);
	344
	345	// free memory
	346	delete m_aItems[N];
	347
	348	m_aItems.RemoveAt(N);
	349	}
	350
	351	bool wxCheckListBox::SetFont( const wxFont &font )
	352	{
	353	size_t i;
	354	for ( i = 0; i < m_aItems.GetCount(); i++ )
	355	m_aItems[i]->SetFont(font);
	356
	357	wxListBox::SetFont(font);
	358
	359	return true;
	360	}
	361
	362	// create/retrieve item
	363	// --------------------
	364
	365	// create a check list box item
	366	wxOwnerDrawn *wxCheckListBox::CreateLboxItem(size_t nIndex)
	367	{
	368	wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
	369	return pItem;
	370	}
	371
	372	// return item size
	373	// ----------------
	374	bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
	375	{
	376	if ( wxListBox::MSWOnMeasure(item) ) {
	377	MEASUREITEMSTRUCT pStruct = (MEASUREITEMSTRUCT )item;
	378
	379	// save item height
	380	m_nItemHeight = pStruct->itemHeight;
	381
	382	// add place for the check mark
	383	pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();
	384
	385	return true;
	386	}
	387
	388	return false;
	389	}
	390
	391	// check items
	392	// -----------
	393
	394	bool wxCheckListBox::IsChecked(size_t uiIndex) const
	395	{
	396	wxCHECK_MSG( uiIndex < (size_t)GetCount(), false, _T("bad wxCheckListBox index") );
	397
	398	return GetItem(uiIndex)->IsChecked();
	399	}
	400
	401	void wxCheckListBox::Check(size_t uiIndex, bool bCheck)
	402	{
	403	wxCHECK_RET( uiIndex < (size_t)GetCount(), _T("bad wxCheckListBox index") );
	404
	405	GetItem(uiIndex)->Check(bCheck);
	406	}
	407
	408	// process events
	409	// --------------
	410
	411	void wxCheckListBox::OnKeyDown(wxKeyEvent& event)
	412	{
	413	// what do we do?
	414	enum
	415	{
	416	None,
	417	Toggle,
	418	Set,
	419	Clear
	420	} oper;
	421
	422	switch ( event.GetKeyCode() )
	423	{
	424	case WXK_SPACE:
	425	oper = Toggle;
	426	break;
	427
	428	case WXK_NUMPAD_ADD:
	429	case '+':
	430	oper = Set;
	431	break;
	432
	433	case WXK_NUMPAD_SUBTRACT:
	434	case '-':
	435	oper = Clear;
	436	break;
	437
	438	default:
	439	oper = None;
	440	}
	441
	442	if ( oper != None )
	443	{
	444	wxArrayInt selections;
	445	int count = 0;
	446	if ( HasMultipleSelection() )
	447	{
	448	count = GetSelections(selections);
	449	}
	450	else
	451	{
	452	int sel = GetSelection();
	453	if (sel != -1)
	454	{
	455	count = 1;
	456	selections.Add(sel);
	457	}
	458	}
	459
	460	for ( int i = 0; i < count; i++ )
	461	{
	462	wxCheckListBoxItem *item = GetItem(selections[i]);
	463	if ( !item )
	464	{
	465	wxFAIL_MSG( _T("no wxCheckListBoxItem?") );
	466	continue;
	467	}
	468
	469	switch ( oper )
	470	{
	471	case Toggle:
	472	item->Toggle();
	473	break;
	474
	475	case Set:
	476	case Clear:
	477	item->Check( oper == Set );
	478	break;
	479
	480	default:
	481	wxFAIL_MSG( _T("what should this key do?") );
	482	}
	483
	484	// we should send an event as this has been done by the user and
	485	// not by the program
	486	item->SendEvent();
	487	}
	488	}
	489	else // nothing to do
	490	{
	491	event.Skip();
	492	}
	493	}
	494
	495	void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
	496	{
	497	// clicking on the item selects it, clicking on the checkmark toggles
	498	if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() ) {
	499	int nItem = HitTest(event.GetX(), event.GetY());
	500
	501	if ( nItem != wxNOT_FOUND ) {
	502	wxCheckListBoxItem *item = GetItem(nItem);
	503	item->Toggle();
	504	item->SendEvent();
	505	}
	506	//else: it's not an error, just click outside of client zone
	507	}
	508	else {
	509	// implement default behaviour: clicking on the item selects it
	510	event.Skip();
	511	}
	512	}
	513
	514	int wxCheckListBox::DoHitTestItem(wxCoord x, wxCoord y) const
	515	{
	516	int nItem = (int)::SendMessage
	517	(
	518	(HWND)GetHWND(),
	519	LB_ITEMFROMPOINT,
	520	0,
	521	MAKELPARAM(x, y)
	522	);
	523
	524	return nItem >= (int)m_noItems ? wxNOT_FOUND : nItem;
	525	}
	526
	527
	528	wxSize wxCheckListBox::DoGetBestSize() const
	529	{
	530	wxSize best = wxListBox::DoGetBestSize();
	531	best.x += wxOwnerDrawn::GetDefaultMarginWidth(); // add room for the checkbox
	532	CacheBestSize(best);
	533	return best;
	534	}
	535
	536	#endif