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

#include "wx/checklst.h"

#ifndef WX_PRECOMP
    #include "wx/msw/wrapwin.h"
    #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 <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(unsigned 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 )
{
    unsigned int 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(unsigned int uiIndex) const
{
    wxCHECK_MSG( IsValid(uiIndex), false, _T("bad wxCheckListBox index") );

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

void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
{
    wxCHECK_RET( IsValid(uiIndex), _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	#include "wx/checklst.h"
	30
	31	#ifndef WX_PRECOMP
	32	#include "wx/msw/wrapwin.h"
	33	#include "wx/object.h"
	34	#include "wx/colour.h"
	35	#include "wx/font.h"
	36	#include "wx/bitmap.h"
	37	#include "wx/window.h"
	38	#include "wx/listbox.h"
	39	#include "wx/dcmemory.h"
	40	#include "wx/settings.h"
	41	#include "wx/log.h"
	42	#endif
	43
	44	#include "wx/ownerdrw.h"
	45
	46	#include <windowsx.h>
	47
	48	#include "wx/msw/private.h"
	49
	50	// ----------------------------------------------------------------------------
	51	// private functions
	52	// ----------------------------------------------------------------------------
	53
	54	// get item (converted to right type)
	55	#define GetItem(n) ((wxCheckListBoxItem *)(GetItem(n)))
	56
	57	// ============================================================================
	58	// implementation
	59	// ============================================================================
	60
	61
	62	#if wxUSE_EXTENDED_RTTI
	63	WX_DEFINE_FLAGS( wxCheckListBoxStyle )
	64
	65	wxBEGIN_FLAGS( wxCheckListBoxStyle )
	66	// new style border flags, we put them first to
	67	// use them for streaming out
	68	wxFLAGS_MEMBER(wxBORDER_SIMPLE)
	69	wxFLAGS_MEMBER(wxBORDER_SUNKEN)
	70	wxFLAGS_MEMBER(wxBORDER_DOUBLE)
	71	wxFLAGS_MEMBER(wxBORDER_RAISED)
	72	wxFLAGS_MEMBER(wxBORDER_STATIC)
	73	wxFLAGS_MEMBER(wxBORDER_NONE)
	74
	75	// old style border flags
	76	wxFLAGS_MEMBER(wxSIMPLE_BORDER)
	77	wxFLAGS_MEMBER(wxSUNKEN_BORDER)
	78	wxFLAGS_MEMBER(wxDOUBLE_BORDER)
	79	wxFLAGS_MEMBER(wxRAISED_BORDER)
	80	wxFLAGS_MEMBER(wxSTATIC_BORDER)
	81	wxFLAGS_MEMBER(wxBORDER)
	82
	83	// standard window styles
	84	wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
	85	wxFLAGS_MEMBER(wxCLIP_CHILDREN)
	86	wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
	87	wxFLAGS_MEMBER(wxWANTS_CHARS)
	88	wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
	89	wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
	90	wxFLAGS_MEMBER(wxVSCROLL)
	91	wxFLAGS_MEMBER(wxHSCROLL)
	92
	93	wxFLAGS_MEMBER(wxLB_SINGLE)
	94	wxFLAGS_MEMBER(wxLB_MULTIPLE)
	95	wxFLAGS_MEMBER(wxLB_EXTENDED)
	96	wxFLAGS_MEMBER(wxLB_HSCROLL)
	97	wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
	98	wxFLAGS_MEMBER(wxLB_NEEDED_SB)
	99	wxFLAGS_MEMBER(wxLB_SORT)
	100	wxFLAGS_MEMBER(wxLB_OWNERDRAW)
	101
	102	wxEND_FLAGS( wxCheckListBoxStyle )
	103
	104	IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckListBox, wxListBox,"wx/checklst.h")
	105
	106	wxBEGIN_PROPERTIES_TABLE(wxCheckListBox)
	107	wxEVENT_PROPERTY( Toggle , wxEVT_COMMAND_CHECKLISTBOX_TOGGLED , wxCommandEvent )
	108	wxPROPERTY_FLAGS( WindowStyle , wxCheckListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , wxLB_OWNERDRAW /flags/ , wxT("Helpstring") , wxT("group")) // style
	109	wxEND_PROPERTIES_TABLE()
	110
	111	wxBEGIN_HANDLERS_TABLE(wxCheckListBox)
	112	wxEND_HANDLERS_TABLE()
	113
	114	wxCONSTRUCTOR_4( wxCheckListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
	115
	116	#else
	117	IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
	118	#endif
	119
	120	// ----------------------------------------------------------------------------
	121	// declaration and implementation of wxCheckListBoxItem class
	122	// ----------------------------------------------------------------------------
	123
	124	class wxCheckListBoxItem : public wxOwnerDrawn
	125	{
	126	friend class WXDLLEXPORT wxCheckListBox;
	127	public:
	128	// ctor
	129	wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex);
	130
	131	// drawing functions
	132	virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);
	133
	134	// simple accessors and operations
	135	bool IsChecked() const { return m_bChecked; }
	136
	137	void Check(bool bCheck);
	138	void Toggle() { Check(!IsChecked()); }
	139
	140	void SendEvent();
	141
	142	private:
	143	bool m_bChecked;
	144	wxCheckListBox *m_pParent;
	145	size_t m_nIndex;
	146
	147	DECLARE_NO_COPY_CLASS(wxCheckListBoxItem)
	148	};
	149
	150	wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex)
	151	: wxOwnerDrawn(wxEmptyString, true) // checkable
	152	{
	153	m_bChecked = false;
	154	m_pParent = pParent;
	155	m_nIndex = nIndex;
	156
	157	// we don't initialize m_nCheckHeight/Width vars because it's
	158	// done in OnMeasure while they are used only in OnDraw and we
	159	// know that there will always be OnMeasure before OnDraw
	160
	161	// fix appearance for check list boxes: they don't look quite the same as
	162	// menu icons
	163	SetMarginWidth(::GetSystemMetrics(SM_CXMENUCHECK) -
	164	2*wxSystemSettings::GetMetric(wxSYS_EDGE_X) + 1);
	165	SetBackgroundColour(pParent->GetBackgroundColour());
	166	}
	167
	168	bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
	169	wxODAction act, wxODStatus stat)
	170	{
	171	// first draw the label
	172	if ( IsChecked() )
	173	stat = (wxOwnerDrawn::wxODStatus)(stat \| wxOwnerDrawn::wxODChecked);
	174
	175	if ( !wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) )
	176	return false;
	177
	178
	179	// now draw the check mark part
	180	size_t nCheckWidth = GetDefaultMarginWidth(),
	181	nCheckHeight = m_pParent->GetItemHeight();
	182
	183	int x = rc.GetX(),
	184	y = rc.GetY();
	185
	186	HDC hdc = (HDC)dc.GetHDC();
	187
	188	// create pens, brushes &c
	189	COLORREF colBg = ::GetSysColor(COLOR_WINDOW);
	190	AutoHPEN hpenBack(colBg),
	191	hpenGray(RGB(0xc0, 0xc0, 0xc0));
	192
	193	SelectInHDC selPen(hdc, (HGDIOBJ)hpenBack);
	194	AutoHBRUSH hbrBack(colBg);
	195	SelectInHDC selBrush(hdc, hbrBack);
	196
	197	// erase the background: it could have been filled with the selected colour
	198	Rectangle(hdc, x, y, x + nCheckWidth + 1, rc.GetBottom() + 1);
	199
	200	// shift check mark 1 pixel to the right, looks better like this
	201	x++;
	202
	203	if ( IsChecked() )
	204	{
	205	// first create a monochrome bitmap in a memory DC
	206	MemoryHDC hdcMem(hdc);
	207	MonoBitmap hbmpCheck(nCheckWidth, nCheckHeight);
	208	SelectInHDC selBmp(hdcMem, hbmpCheck);
	209
	210	// then draw a check mark into it
	211	RECT rect = { 0, 0, nCheckWidth, nCheckHeight };
	212	::DrawFrameControl(hdcMem, &rect,
	213	#ifdef __WXWINCE__
	214	DFC_BUTTON, DFCS_BUTTONCHECK
	215	#else
	216	DFC_MENU, DFCS_MENUCHECK
	217	#endif
	218	);
	219
	220	// finally copy it to screen DC
	221	::BitBlt(hdc, x, y, nCheckWidth, nCheckHeight, hdcMem, 0, 0, SRCCOPY);
	222	}
	223
	224	// now we draw the smaller rectangle
	225	y++;
	226	nCheckWidth -= 2;
	227	nCheckHeight -= 2;
	228
	229	// draw hollow gray rectangle
	230	(void)::SelectObject(hdc, (HGDIOBJ)hpenGray);
	231
	232	SelectInHDC selBrush2(hdc, ::GetStockObject(NULL_BRUSH));
	233	Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);
	234
	235	return true;
	236	}
	237
	238	// change the state of the item and redraw it
	239	void wxCheckListBoxItem::Check(bool check)
	240	{
	241	m_bChecked = check;
	242
	243	// index may be changed because new items were added/deleted
	244	if ( m_pParent->GetItemIndex(this) != (int)m_nIndex )
	245	{
	246	// update it
	247	int index = m_pParent->GetItemIndex(this);
	248
	249	wxASSERT_MSG( index != wxNOT_FOUND, wxT("what does this item do here?") );
	250
	251	m_nIndex = (size_t)index;
	252	}
	253
	254	HWND hwndListbox = (HWND)m_pParent->GetHWND();
	255
	256	RECT rcUpdate;
	257
	258	if ( ::SendMessage(hwndListbox, LB_GETITEMRECT,
	259	m_nIndex, (LPARAM)&rcUpdate) == LB_ERR )
	260	{
	261	wxLogDebug(wxT("LB_GETITEMRECT failed"));
	262	}
	263
	264	::InvalidateRect(hwndListbox, &rcUpdate, FALSE);
	265	}
	266
	267	// send an "item checked" event
	268	void wxCheckListBoxItem::SendEvent()
	269	{
	270	wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
	271	event.SetInt(m_nIndex);
	272	event.SetEventObject(m_pParent);
	273	m_pParent->ProcessCommand(event);
	274	}
	275
	276	// ----------------------------------------------------------------------------
	277	// implementation of wxCheckListBox class
	278	// ----------------------------------------------------------------------------
	279
	280	// define event table
	281	// ------------------
	282	BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
	283	EVT_KEY_DOWN(wxCheckListBox::OnKeyDown)
	284	EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
	285	END_EVENT_TABLE()
	286
	287	// control creation
	288	// ----------------
	289
	290	// def ctor: use Create() to really create the control
	291	wxCheckListBox::wxCheckListBox()
	292	{
	293	}
	294
	295	// ctor which creates the associated control
	296	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	297	const wxPoint& pos, const wxSize& size,
	298	int nStrings, const wxString choices[],
	299	long style, const wxValidator& val,
	300	const wxString& name)
	301	{
	302	Create(parent, id, pos, size, nStrings, choices, style, val, name);
	303	}
	304
	305	wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id,
	306	const wxPoint& pos, const wxSize& size,
	307	const wxArrayString& choices,
	308	long style, const wxValidator& val,
	309	const wxString& name)
	310	{
	311	Create(parent, id, pos, size, choices, style, val, name);
	312	}
	313
	314	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	315	const wxPoint& pos, const wxSize& size,
	316	int n, const wxString choices[],
	317	long style,
	318	const wxValidator& validator, const wxString& name)
	319	{
	320	return wxListBox::Create(parent, id, pos, size, n, choices,
	321	style \| wxLB_OWNERDRAW, validator, name);
	322	}
	323
	324	bool wxCheckListBox::Create(wxWindow *parent, wxWindowID id,
	325	const wxPoint& pos, const wxSize& size,
	326	const wxArrayString& choices,
	327	long style,
	328	const wxValidator& validator, const wxString& name)
	329	{
	330	return wxListBox::Create(parent, id, pos, size, choices,
	331	style \| wxLB_OWNERDRAW, validator, name);
	332	}
	333
	334	// misc overloaded methods
	335	// -----------------------
	336
	337	void wxCheckListBox::Delete(unsigned int n)
	338	{
	339	wxCHECK_RET( IsValid(n),
	340	wxT("invalid index in wxListBox::Delete") );
	341
	342	wxListBox::Delete(n);
	343
	344	// free memory
	345	delete m_aItems[n];
	346
	347	m_aItems.RemoveAt(n);
	348	}
	349
	350	bool wxCheckListBox::SetFont( const wxFont &font )
	351	{
	352	unsigned int i;
	353	for ( i = 0; i < m_aItems.GetCount(); i++ )
	354	m_aItems[i]->SetFont(font);
	355
	356	wxListBox::SetFont(font);
	357
	358	return true;
	359	}
	360
	361	// create/retrieve item
	362	// --------------------
	363
	364	// create a check list box item
	365	wxOwnerDrawn *wxCheckListBox::CreateLboxItem(size_t nIndex)
	366	{
	367	wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
	368	return pItem;
	369	}
	370
	371	// return item size
	372	// ----------------
	373	bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
	374	{
	375	if ( wxListBox::MSWOnMeasure(item) ) {
	376	MEASUREITEMSTRUCT pStruct = (MEASUREITEMSTRUCT )item;
	377
	378	// save item height
	379	m_nItemHeight = pStruct->itemHeight;
	380
	381	// add place for the check mark
	382	pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();
	383
	384	return true;
	385	}
	386
	387	return false;
	388	}
	389
	390	// check items
	391	// -----------
	392
	393	bool wxCheckListBox::IsChecked(unsigned int uiIndex) const
	394	{
	395	wxCHECK_MSG( IsValid(uiIndex), false, _T("bad wxCheckListBox index") );
	396
	397	return GetItem(uiIndex)->IsChecked();
	398	}
	399
	400	void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
	401	{
	402	wxCHECK_RET( IsValid(uiIndex), _T("bad wxCheckListBox index") );
	403
	404	GetItem(uiIndex)->Check(bCheck);
	405	}
	406
	407	// process events
	408	// --------------
	409
	410	void wxCheckListBox::OnKeyDown(wxKeyEvent& event)
	411	{
	412	// what do we do?
	413	enum
	414	{
	415	None,
	416	Toggle,
	417	Set,
	418	Clear
	419	} oper;
	420
	421	switch ( event.GetKeyCode() )
	422	{
	423	case WXK_SPACE:
	424	oper = Toggle;
	425	break;
	426
	427	case WXK_NUMPAD_ADD:
	428	case '+':
	429	oper = Set;
	430	break;
	431
	432	case WXK_NUMPAD_SUBTRACT:
	433	case '-':
	434	oper = Clear;
	435	break;
	436
	437	default:
	438	oper = None;
	439	}
	440
	441	if ( oper != None )
	442	{
	443	wxArrayInt selections;
	444	int count = 0;
	445	if ( HasMultipleSelection() )
	446	{
	447	count = GetSelections(selections);
	448	}
	449	else
	450	{
	451	int sel = GetSelection();
	452	if (sel != -1)
	453	{
	454	count = 1;
	455	selections.Add(sel);
	456	}
	457	}
	458
	459	for ( int i = 0; i < count; i++ )
	460	{
	461	wxCheckListBoxItem *item = GetItem(selections[i]);
	462	if ( !item )
	463	{
	464	wxFAIL_MSG( _T("no wxCheckListBoxItem?") );
	465	continue;
	466	}
	467
	468	switch ( oper )
	469	{
	470	case Toggle:
	471	item->Toggle();
	472	break;
	473
	474	case Set:
	475	case Clear:
	476	item->Check( oper == Set );
	477	break;
	478
	479	default:
	480	wxFAIL_MSG( _T("what should this key do?") );
	481	}
	482
	483	// we should send an event as this has been done by the user and
	484	// not by the program
	485	item->SendEvent();
	486	}
	487	}
	488	else // nothing to do
	489	{
	490	event.Skip();
	491	}
	492	}
	493
	494	void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
	495	{
	496	// clicking on the item selects it, clicking on the checkmark toggles
	497	if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() )
	498	{
	499	int nItem = HitTest(event.GetX(), event.GetY());
	500
	501	if ( nItem != wxNOT_FOUND )
	502	{
	503	wxCheckListBoxItem *item = GetItem(nItem);
	504	item->Toggle();
	505	item->SendEvent();
	506	}
	507	//else: it's not an error, just click outside of client zone
	508	}
	509	else
	510	{
	511	// implement default behaviour: clicking on the item selects it
	512	event.Skip();
	513	}
	514	}
	515
	516	int wxCheckListBox::DoHitTestItem(wxCoord x, wxCoord y) const
	517	{
	518	int nItem = (int)::SendMessage
	519	(
	520	(HWND)GetHWND(),
	521	LB_ITEMFROMPOINT,
	522	0,
	523	MAKELPARAM(x, y)
	524	);
	525
	526	return nItem >= (int)m_noItems ? wxNOT_FOUND : nItem;
	527	}
	528
	529
	530	wxSize wxCheckListBox::DoGetBestSize() const
	531	{
	532	wxSize best = wxListBox::DoGetBestSize();
	533	best.x += wxOwnerDrawn::GetDefaultMarginWidth(); // add room for the checkbox
	534	CacheBestSize(best);
	535	return best;
	536	}
	537
	538	#endif