src/msw/checkbox.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/checkbox.cpp
// Purpose:     wxCheckBox
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

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

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

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_CHECKBOX

#include "wx/checkbox.h"

#ifndef WX_PRECOMP
    #include "wx/brush.h"
    #include "wx/dcscreen.h"
    #include "wx/settings.h"
#endif

#include "wx/msw/dc.h"          // for wxDCTemp
#include "wx/renderer.h"
#include "wx/msw/uxtheme.h"
#include "wx/msw/private/button.h"

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

#ifndef BST_UNCHECKED
    #define BST_UNCHECKED 0x0000
#endif

#ifndef BST_CHECKED
    #define BST_CHECKED 0x0001
#endif

#ifndef BST_INDETERMINATE
    #define BST_INDETERMINATE 0x0002
#endif

#ifndef DT_HIDEPREFIX
    #define DT_HIDEPREFIX 0x00100000
#endif

#ifndef BP_CHECKBOX
    #define BP_CHECKBOX 3
#endif

// these values are defined in tmschema.h (except the first one)
enum
{
    CBS_INVALID,
    CBS_UNCHECKEDNORMAL,
    CBS_UNCHECKEDHOT,
    CBS_UNCHECKEDPRESSED,
    CBS_UNCHECKEDDISABLED,
    CBS_CHECKEDNORMAL,
    CBS_CHECKEDHOT,
    CBS_CHECKEDPRESSED,
    CBS_CHECKEDDISABLED,
    CBS_MIXEDNORMAL,
    CBS_MIXEDHOT,
    CBS_MIXEDPRESSED,
    CBS_MIXEDDISABLED
};

// these are our own
enum
{
    CBS_HOT_OFFSET = 1,
    CBS_PRESSED_OFFSET = 2,
    CBS_DISABLED_OFFSET = 3
};

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

#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxCheckBoxStyle )

wxBEGIN_FLAGS( wxCheckBoxStyle )
    // 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(wxNO_BORDER)

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

wxEND_FLAGS( wxCheckBoxStyle )

IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckBox, wxControl,"wx/checkbox.h")

wxBEGIN_PROPERTIES_TABLE(wxCheckBox)
    wxEVENT_PROPERTY( Click , wxEVT_COMMAND_CHECKBOX_CLICKED , wxCommandEvent )

    wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxPROPERTY( Value ,bool, SetValue, GetValue, EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxPROPERTY_FLAGS( WindowStyle , wxCheckBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxCheckBox)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_6( wxCheckBox , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
#else
IMPLEMENT_DYNAMIC_CLASS(wxCheckBox, wxControl)
#endif


// ----------------------------------------------------------------------------
// wxCheckBox creation
// ----------------------------------------------------------------------------

void wxCheckBox::Init()
{
    m_state = wxCHK_UNCHECKED;
    m_isPressed =
    m_isHot = false;
}

bool wxCheckBox::Create(wxWindow *parent,
                        wxWindowID id,
                        const wxString& label,
                        const wxPoint& pos,
                        const wxSize& size, long style,
                        const wxValidator& validator,
                        const wxString& name)
{
    Init();

    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
        return false;

    long msStyle = WS_TABSTOP;

    if ( style & wxCHK_3STATE )
    {
        msStyle |= BS_3STATE;
    }
    else
    {
        wxASSERT_MSG( !Is3rdStateAllowedForUser(),
            wxT("Using wxCH_ALLOW_3RD_STATE_FOR_USER")
            wxT(" style flag for a 2-state checkbox is useless") );
        msStyle |= BS_CHECKBOX;
    }

    if ( style & wxALIGN_RIGHT )
    {
        msStyle |= BS_LEFTTEXT | BS_RIGHT;
    }

    msStyle |= wxMSWButton::GetMultilineStyle(label);

    return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, 0);
}

// ----------------------------------------------------------------------------
// wxCheckBox geometry
// ----------------------------------------------------------------------------

wxSize wxCheckBox::DoGetBestSize() const
{
    static int s_checkSize = 0;

    if ( !s_checkSize )
    {
        wxScreenDC dc;
        dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));

        s_checkSize = dc.GetCharHeight();
    }

    wxString str = wxGetWindowText(GetHWND());

    int wCheckbox, hCheckbox;
    if ( !str.empty() )
    {
        wxClientDC dc(wx_const_cast(wxCheckBox *, this));
        dc.SetFont(GetFont());
        dc.GetMultiLineTextExtent(GetLabelText(str), &wCheckbox, &hCheckbox);
        wCheckbox += s_checkSize + GetCharWidth();

        if ( hCheckbox < s_checkSize )
            hCheckbox = s_checkSize;
    }
    else
    {
        wCheckbox = s_checkSize;
        hCheckbox = s_checkSize;
    }
#ifdef __WXWINCE__
    hCheckbox += 1;
#endif

    wxSize best(wCheckbox, hCheckbox);
    CacheBestSize(best);
    return best;
}

// ----------------------------------------------------------------------------
// wxCheckBox operations
// ----------------------------------------------------------------------------

void wxCheckBox::SetLabel(const wxString& label)
{
    wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);

    wxCheckBoxBase::SetLabel(label);
}

void wxCheckBox::SetValue(bool val)
{
    Set3StateValue(val ? wxCHK_CHECKED : wxCHK_UNCHECKED);
}

bool wxCheckBox::GetValue() const
{
    return Get3StateValue() != wxCHK_UNCHECKED;
}

void wxCheckBox::Command(wxCommandEvent& event)
{
    int state = event.GetInt();
    wxCHECK_RET( (state == wxCHK_UNCHECKED) || (state == wxCHK_CHECKED)
        || (state == wxCHK_UNDETERMINED),
        wxT("event.GetInt() returned an invalid checkbox state") );

    Set3StateValue((wxCheckBoxState) state);
    ProcessCommand(event);
}

wxCOMPILE_TIME_ASSERT(wxCHK_UNCHECKED == BST_UNCHECKED
    && wxCHK_CHECKED == BST_CHECKED
    && wxCHK_UNDETERMINED == BST_INDETERMINATE, EnumValuesIncorrect);

void wxCheckBox::DoSet3StateValue(wxCheckBoxState state)
{
    m_state = state;
    if ( !IsOwnerDrawn() )
        ::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM) state, 0);
    else // owner drawn buttons don't react to this message
        Refresh();
}

wxCheckBoxState wxCheckBox::DoGet3StateValue() const
{
    return m_state;
}

bool wxCheckBox::MSWCommand(WXUINT cmd, WXWORD WXUNUSED(id))
{
    if ( cmd != BN_CLICKED && cmd != BN_DBLCLK )
        return false;

    // first update the value so that user event handler gets the new checkbox
    // value

    // ownerdrawn buttons don't manage their state themselves unlike usual
    // auto checkboxes so do it ourselves in any case
    wxCheckBoxState state;
    if ( Is3rdStateAllowedForUser() )
    {
        state = (wxCheckBoxState)((m_state + 1) % 3);
    }
    else // 2 state checkbox (at least from users point of view)
    {
        // note that wxCHK_UNDETERMINED also becomes unchecked when clicked
        state = m_state == wxCHK_UNCHECKED ? wxCHK_CHECKED : wxCHK_UNCHECKED;
    }

    DoSet3StateValue(state);


    // generate the event
    wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, m_windowId);

    event.SetInt(state);
    event.SetEventObject(this);
    ProcessCommand(event);

    return true;
}

// ----------------------------------------------------------------------------
// owner drawn checkboxes stuff
// ----------------------------------------------------------------------------

bool wxCheckBox::SetForegroundColour(const wxColour& colour)
{
    if ( !wxCheckBoxBase::SetForegroundColour(colour) )
        return false;

    // the only way to change the checkbox foreground colour under Windows XP
    // is to owner draw it
    if ( wxUxThemeEngine::GetIfActive() )
        MakeOwnerDrawn(colour.Ok());

    return true;
}

bool wxCheckBox::IsOwnerDrawn() const
{
    return
        (::GetWindowLong(GetHwnd(), GWL_STYLE) & BS_OWNERDRAW) == BS_OWNERDRAW;
}

void wxCheckBox::MakeOwnerDrawn(bool ownerDrawn)
{
    long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);

    // note that BS_CHECKBOX & BS_OWNERDRAW != 0 so we can't operate on
    // them as on independent style bits
    if ( ownerDrawn )
    {
        style &= ~(BS_CHECKBOX | BS_3STATE);
        style |= BS_OWNERDRAW;

        Connect(wxEVT_ENTER_WINDOW,
                wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
        Connect(wxEVT_LEAVE_WINDOW,
                wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
        Connect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
        Connect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
        Connect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
        Connect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
    }
    else // reset to default colour
    {
        style &= ~BS_OWNERDRAW;
        style |= HasFlag(wxCHK_3STATE) ? BS_3STATE : BS_CHECKBOX;

        Disconnect(wxEVT_ENTER_WINDOW,
                   wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
        Disconnect(wxEVT_LEAVE_WINDOW,
                   wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
        Disconnect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
        Disconnect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
        Disconnect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
        Disconnect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
    }

    ::SetWindowLong(GetHwnd(), GWL_STYLE, style);

    if ( !ownerDrawn )
    {
        // ensure that controls state is consistent with internal state
        DoSet3StateValue(m_state);
    }
}

void wxCheckBox::OnMouseEnterOrLeave(wxMouseEvent& event)
{
    m_isHot = event.GetEventType() == wxEVT_ENTER_WINDOW;
    if ( !m_isHot )
        m_isPressed = false;

    Refresh();

    event.Skip();
}

void wxCheckBox::OnMouseLeft(wxMouseEvent& event)
{
    // TODO: we should capture the mouse here to be notified about left up
    //       event but this interferes with BN_CLICKED generation so if we
    //       want to do this we'd need to generate them ourselves
    m_isPressed = event.GetEventType() == wxEVT_LEFT_DOWN;
    Refresh();

    event.Skip();
}

void wxCheckBox::OnFocus(wxFocusEvent& event)
{
    Refresh();

    event.Skip();
}

bool wxCheckBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
{
    DRAWITEMSTRUCT *dis = (DRAWITEMSTRUCT *)item;

    if ( !IsOwnerDrawn() || dis->CtlType != ODT_BUTTON )
        return wxCheckBoxBase::MSWOnDraw(item);

    // calculate the rectangles for the check mark itself and the label
    HDC hdc = dis->hDC;
    RECT& rect = dis->rcItem;
    RECT rectCheck,
         rectLabel;
    rectCheck.top =
    rectLabel.top = rect.top;
    rectCheck.bottom =
    rectLabel.bottom = rect.bottom;
    const int checkSize = GetBestSize().y;
    const int MARGIN = 3;

    const bool isRightAligned = HasFlag(wxALIGN_RIGHT);
    if ( isRightAligned )
    {
        rectCheck.right = rect.right;
        rectCheck.left = rectCheck.right - checkSize;

        rectLabel.right = rectCheck.left - MARGIN;
        rectLabel.left = rect.left;
    }
    else // normal, left-aligned checkbox
    {
        rectCheck.left = rect.left;
        rectCheck.right = rectCheck.left + checkSize;

        rectLabel.left = rectCheck.right + MARGIN;
        rectLabel.right = rect.right;
    }

    // show we draw a focus rect?
    const bool isFocused = m_isPressed || FindFocus() == this;


    // draw the checkbox itself
    wxDCTemp dc(hdc);

    int flags = 0;
    if ( !IsEnabled() )
        flags |= wxCONTROL_DISABLED;
    switch ( Get3StateValue() )
    {
        case wxCHK_CHECKED:
            flags |= wxCONTROL_CHECKED;
            break;

        case wxCHK_UNDETERMINED:
            flags |= wxCONTROL_PRESSED;
            break;

        default:
            wxFAIL_MSG( _T("unexpected Get3StateValue() return value") );
            // fall through

        case wxCHK_UNCHECKED:
            // no extra styles needed
            break;
    }

    if ( wxFindWindowAtPoint(wxGetMousePosition()) == this )
        flags |= wxCONTROL_CURRENT;

    wxRendererNative::Get().
        DrawCheckBox(this, dc, wxRectFromRECT(rectCheck), flags);

    // draw the text
    const wxString& label = GetLabel();

    // first we need to measure it
    UINT fmt = DT_NOCLIP;

    // drawing underlying doesn't look well with focus rect (and the native
    // control doesn't do it)
    if ( isFocused )
        fmt |= DT_HIDEPREFIX;
    if ( isRightAligned )
        fmt |= DT_RIGHT;
    // TODO: also use DT_HIDEPREFIX if the system is configured so

    // we need to get the label real size first if we have to draw a focus rect
    // around it
    if ( isFocused )
    {
        if ( !::DrawText(hdc, label.wx_str(), label.length(), &rectLabel,
                         fmt | DT_CALCRECT) )
        {
            wxLogLastError(_T("DrawText(DT_CALCRECT)"));
        }
    }

    if ( !IsEnabled() )
    {
        ::SetTextColor(hdc, ::GetSysColor(COLOR_GRAYTEXT));
    }

    if ( !::DrawText(hdc, label.wx_str(), label.length(), &rectLabel, fmt) )
    {
        wxLogLastError(_T("DrawText()"));
    }

    // finally draw the focus
    if ( isFocused )
    {
        rectLabel.left--;
        rectLabel.right++;
        if ( !::DrawFocusRect(hdc, &rectLabel) )
        {
            wxLogLastError(_T("DrawFocusRect()"));
        }
    }

    return true;
}

#endif // wxUSE_CHECKBOX
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/msw/checkbox.cpp
	3	// Purpose: wxCheckBox
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 04/01/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	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_CHECKBOX
	28
	29	#include "wx/checkbox.h"
	30
	31	#ifndef WX_PRECOMP
	32	#include "wx/brush.h"
	33	#include "wx/dcscreen.h"
	34	#include "wx/settings.h"
	35	#endif
	36
	37	#include "wx/msw/dc.h" // for wxDCTemp
	38	#include "wx/renderer.h"
	39	#include "wx/msw/uxtheme.h"
	40	#include "wx/msw/private/button.h"
	41
	42	// ----------------------------------------------------------------------------
	43	// constants
	44	// ----------------------------------------------------------------------------
	45
	46	#ifndef BST_UNCHECKED
	47	#define BST_UNCHECKED 0x0000
	48	#endif
	49
	50	#ifndef BST_CHECKED
	51	#define BST_CHECKED 0x0001
	52	#endif
	53
	54	#ifndef BST_INDETERMINATE
	55	#define BST_INDETERMINATE 0x0002
	56	#endif
	57
	58	#ifndef DT_HIDEPREFIX
	59	#define DT_HIDEPREFIX 0x00100000
	60	#endif
	61
	62	#ifndef BP_CHECKBOX
	63	#define BP_CHECKBOX 3
	64	#endif
	65
	66	// these values are defined in tmschema.h (except the first one)
	67	enum
	68	{
	69	CBS_INVALID,
	70	CBS_UNCHECKEDNORMAL,
	71	CBS_UNCHECKEDHOT,
	72	CBS_UNCHECKEDPRESSED,
	73	CBS_UNCHECKEDDISABLED,
	74	CBS_CHECKEDNORMAL,
	75	CBS_CHECKEDHOT,
	76	CBS_CHECKEDPRESSED,
	77	CBS_CHECKEDDISABLED,
	78	CBS_MIXEDNORMAL,
	79	CBS_MIXEDHOT,
	80	CBS_MIXEDPRESSED,
	81	CBS_MIXEDDISABLED
	82	};
	83
	84	// these are our own
	85	enum
	86	{
	87	CBS_HOT_OFFSET = 1,
	88	CBS_PRESSED_OFFSET = 2,
	89	CBS_DISABLED_OFFSET = 3
	90	};
	91
	92	// ============================================================================
	93	// implementation
	94	// ============================================================================
	95
	96	#if wxUSE_EXTENDED_RTTI
	97	WX_DEFINE_FLAGS( wxCheckBoxStyle )
	98
	99	wxBEGIN_FLAGS( wxCheckBoxStyle )
	100	// new style border flags, we put them first to
	101	// use them for streaming out
	102	wxFLAGS_MEMBER(wxBORDER_SIMPLE)
	103	wxFLAGS_MEMBER(wxBORDER_SUNKEN)
	104	wxFLAGS_MEMBER(wxBORDER_DOUBLE)
	105	wxFLAGS_MEMBER(wxBORDER_RAISED)
	106	wxFLAGS_MEMBER(wxBORDER_STATIC)
	107	wxFLAGS_MEMBER(wxBORDER_NONE)
	108
	109	// old style border flags
	110	wxFLAGS_MEMBER(wxSIMPLE_BORDER)
	111	wxFLAGS_MEMBER(wxSUNKEN_BORDER)
	112	wxFLAGS_MEMBER(wxDOUBLE_BORDER)
	113	wxFLAGS_MEMBER(wxRAISED_BORDER)
	114	wxFLAGS_MEMBER(wxSTATIC_BORDER)
	115	wxFLAGS_MEMBER(wxNO_BORDER)
	116
	117	// standard window styles
	118	wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
	119	wxFLAGS_MEMBER(wxCLIP_CHILDREN)
	120	wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
	121	wxFLAGS_MEMBER(wxWANTS_CHARS)
	122	wxFLAGS_MEMBER(wxNO_FULL_REPAINT_ON_RESIZE)
	123	wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
	124	wxFLAGS_MEMBER(wxVSCROLL)
	125	wxFLAGS_MEMBER(wxHSCROLL)
	126
	127	wxEND_FLAGS( wxCheckBoxStyle )
	128
	129	IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckBox, wxControl,"wx/checkbox.h")
	130
	131	wxBEGIN_PROPERTIES_TABLE(wxCheckBox)
	132	wxEVENT_PROPERTY( Click , wxEVT_COMMAND_CHECKBOX_CLICKED , wxCommandEvent )
	133
	134	wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE , 0 /flags/ , wxT("Helpstring") , wxT("group"))
	135	wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString() , 0 /flags/ , wxT("Helpstring") , wxT("group"))
	136	wxPROPERTY( Value ,bool, SetValue, GetValue, EMPTY_MACROVALUE, 0 /flags/ , wxT("Helpstring") , wxT("group"))
	137	wxPROPERTY_FLAGS( WindowStyle , wxCheckBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /flags/ , wxT("Helpstring") , wxT("group")) // style
	138	wxEND_PROPERTIES_TABLE()
	139
	140	wxBEGIN_HANDLERS_TABLE(wxCheckBox)
	141	wxEND_HANDLERS_TABLE()
	142
	143	wxCONSTRUCTOR_6( wxCheckBox , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
	144	#else
	145	IMPLEMENT_DYNAMIC_CLASS(wxCheckBox, wxControl)
	146	#endif
	147
	148
	149	// ----------------------------------------------------------------------------
	150	// wxCheckBox creation
	151	// ----------------------------------------------------------------------------
	152
	153	void wxCheckBox::Init()
	154	{
	155	m_state = wxCHK_UNCHECKED;
	156	m_isPressed =
	157	m_isHot = false;
	158	}
	159
	160	bool wxCheckBox::Create(wxWindow *parent,
	161	wxWindowID id,
	162	const wxString& label,
	163	const wxPoint& pos,
	164	const wxSize& size, long style,
	165	const wxValidator& validator,
	166	const wxString& name)
	167	{
	168	Init();
	169
	170	if ( !CreateControl(parent, id, pos, size, style, validator, name) )
	171	return false;
	172
	173	long msStyle = WS_TABSTOP;
	174
	175	if ( style & wxCHK_3STATE )
	176	{
	177	msStyle \|= BS_3STATE;
	178	}
	179	else
	180	{
	181	wxASSERT_MSG( !Is3rdStateAllowedForUser(),
	182	wxT("Using wxCH_ALLOW_3RD_STATE_FOR_USER")
	183	wxT(" style flag for a 2-state checkbox is useless") );
	184	msStyle \|= BS_CHECKBOX;
	185	}
	186
	187	if ( style & wxALIGN_RIGHT )
	188	{
	189	msStyle \|= BS_LEFTTEXT \| BS_RIGHT;
	190	}
	191
	192	msStyle \|= wxMSWButton::GetMultilineStyle(label);
	193
	194	return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, 0);
	195	}
	196
	197	// ----------------------------------------------------------------------------
	198	// wxCheckBox geometry
	199	// ----------------------------------------------------------------------------
	200
	201	wxSize wxCheckBox::DoGetBestSize() const
	202	{
	203	static int s_checkSize = 0;
	204
	205	if ( !s_checkSize )
	206	{
	207	wxScreenDC dc;
	208	dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
	209
	210	s_checkSize = dc.GetCharHeight();
	211	}
	212
	213	wxString str = wxGetWindowText(GetHWND());
	214
	215	int wCheckbox, hCheckbox;
	216	if ( !str.empty() )
	217	{
	218	wxClientDC dc(wx_const_cast(wxCheckBox *, this));
	219	dc.SetFont(GetFont());
	220	dc.GetMultiLineTextExtent(GetLabelText(str), &wCheckbox, &hCheckbox);
	221	wCheckbox += s_checkSize + GetCharWidth();
	222
	223	if ( hCheckbox < s_checkSize )
	224	hCheckbox = s_checkSize;
	225	}
	226	else
	227	{
	228	wCheckbox = s_checkSize;
	229	hCheckbox = s_checkSize;
	230	}
	231	#ifdef __WXWINCE__
	232	hCheckbox += 1;
	233	#endif
	234
	235	wxSize best(wCheckbox, hCheckbox);
	236	CacheBestSize(best);
	237	return best;
	238	}
	239
	240	// ----------------------------------------------------------------------------
	241	// wxCheckBox operations
	242	// ----------------------------------------------------------------------------
	243
	244	void wxCheckBox::SetLabel(const wxString& label)
	245	{
	246	wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);
	247
	248	wxCheckBoxBase::SetLabel(label);
	249	}
	250
	251	void wxCheckBox::SetValue(bool val)
	252	{
	253	Set3StateValue(val ? wxCHK_CHECKED : wxCHK_UNCHECKED);
	254	}
	255
	256	bool wxCheckBox::GetValue() const
	257	{
	258	return Get3StateValue() != wxCHK_UNCHECKED;
	259	}
	260
	261	void wxCheckBox::Command(wxCommandEvent& event)
	262	{
	263	int state = event.GetInt();
	264	wxCHECK_RET( (state == wxCHK_UNCHECKED) \|\| (state == wxCHK_CHECKED)
	265	\|\| (state == wxCHK_UNDETERMINED),
	266	wxT("event.GetInt() returned an invalid checkbox state") );
	267
	268	Set3StateValue((wxCheckBoxState) state);
	269	ProcessCommand(event);
	270	}
	271
	272	wxCOMPILE_TIME_ASSERT(wxCHK_UNCHECKED == BST_UNCHECKED
	273	&& wxCHK_CHECKED == BST_CHECKED
	274	&& wxCHK_UNDETERMINED == BST_INDETERMINATE, EnumValuesIncorrect);
	275
	276	void wxCheckBox::DoSet3StateValue(wxCheckBoxState state)
	277	{
	278	m_state = state;
	279	if ( !IsOwnerDrawn() )
	280	::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM) state, 0);
	281	else // owner drawn buttons don't react to this message
	282	Refresh();
	283	}
	284
	285	wxCheckBoxState wxCheckBox::DoGet3StateValue() const
	286	{
	287	return m_state;
	288	}
	289
	290	bool wxCheckBox::MSWCommand(WXUINT cmd, WXWORD WXUNUSED(id))
	291	{
	292	if ( cmd != BN_CLICKED && cmd != BN_DBLCLK )
	293	return false;
	294
	295	// first update the value so that user event handler gets the new checkbox
	296	// value
	297
	298	// ownerdrawn buttons don't manage their state themselves unlike usual
	299	// auto checkboxes so do it ourselves in any case
	300	wxCheckBoxState state;
	301	if ( Is3rdStateAllowedForUser() )
	302	{
	303	state = (wxCheckBoxState)((m_state + 1) % 3);
	304	}
	305	else // 2 state checkbox (at least from users point of view)
	306	{
	307	// note that wxCHK_UNDETERMINED also becomes unchecked when clicked
	308	state = m_state == wxCHK_UNCHECKED ? wxCHK_CHECKED : wxCHK_UNCHECKED;
	309	}
	310
	311	DoSet3StateValue(state);
	312
	313
	314	// generate the event
	315	wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, m_windowId);
	316
	317	event.SetInt(state);
	318	event.SetEventObject(this);
	319	ProcessCommand(event);
	320
	321	return true;
	322	}
	323
	324	// ----------------------------------------------------------------------------
	325	// owner drawn checkboxes stuff
	326	// ----------------------------------------------------------------------------
	327
	328	bool wxCheckBox::SetForegroundColour(const wxColour& colour)
	329	{
	330	if ( !wxCheckBoxBase::SetForegroundColour(colour) )
	331	return false;
	332
	333	// the only way to change the checkbox foreground colour under Windows XP
	334	// is to owner draw it
	335	if ( wxUxThemeEngine::GetIfActive() )
	336	MakeOwnerDrawn(colour.Ok());
	337
	338	return true;
	339	}
	340
	341	bool wxCheckBox::IsOwnerDrawn() const
	342	{
	343	return
	344	(::GetWindowLong(GetHwnd(), GWL_STYLE) & BS_OWNERDRAW) == BS_OWNERDRAW;
	345	}
	346
	347	void wxCheckBox::MakeOwnerDrawn(bool ownerDrawn)
	348	{
	349	long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
	350
	351	// note that BS_CHECKBOX & BS_OWNERDRAW != 0 so we can't operate on
	352	// them as on independent style bits
	353	if ( ownerDrawn )
	354	{
	355	style &= ~(BS_CHECKBOX \| BS_3STATE);
	356	style \|= BS_OWNERDRAW;
	357
	358	Connect(wxEVT_ENTER_WINDOW,
	359	wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
	360	Connect(wxEVT_LEAVE_WINDOW,
	361	wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
	362	Connect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
	363	Connect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
	364	Connect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
	365	Connect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
	366	}
	367	else // reset to default colour
	368	{
	369	style &= ~BS_OWNERDRAW;
	370	style \|= HasFlag(wxCHK_3STATE) ? BS_3STATE : BS_CHECKBOX;
	371
	372	Disconnect(wxEVT_ENTER_WINDOW,
	373	wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
	374	Disconnect(wxEVT_LEAVE_WINDOW,
	375	wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
	376	Disconnect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
	377	Disconnect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
	378	Disconnect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
	379	Disconnect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
	380	}
	381
	382	::SetWindowLong(GetHwnd(), GWL_STYLE, style);
	383
	384	if ( !ownerDrawn )
	385	{
	386	// ensure that controls state is consistent with internal state
	387	DoSet3StateValue(m_state);
	388	}
	389	}
	390
	391	void wxCheckBox::OnMouseEnterOrLeave(wxMouseEvent& event)
	392	{
	393	m_isHot = event.GetEventType() == wxEVT_ENTER_WINDOW;
	394	if ( !m_isHot )
	395	m_isPressed = false;
	396
	397	Refresh();
	398
	399	event.Skip();
	400	}
	401
	402	void wxCheckBox::OnMouseLeft(wxMouseEvent& event)
	403	{
	404	// TODO: we should capture the mouse here to be notified about left up
	405	// event but this interferes with BN_CLICKED generation so if we
	406	// want to do this we'd need to generate them ourselves
	407	m_isPressed = event.GetEventType() == wxEVT_LEFT_DOWN;
	408	Refresh();
	409
	410	event.Skip();
	411	}
	412
	413	void wxCheckBox::OnFocus(wxFocusEvent& event)
	414	{
	415	Refresh();
	416
	417	event.Skip();
	418	}
	419
	420	bool wxCheckBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
	421	{
	422	DRAWITEMSTRUCT dis = (DRAWITEMSTRUCT )item;
	423
	424	if ( !IsOwnerDrawn() \|\| dis->CtlType != ODT_BUTTON )
	425	return wxCheckBoxBase::MSWOnDraw(item);
	426
	427	// calculate the rectangles for the check mark itself and the label
	428	HDC hdc = dis->hDC;
	429	RECT& rect = dis->rcItem;
	430	RECT rectCheck,
	431	rectLabel;
	432	rectCheck.top =
	433	rectLabel.top = rect.top;
	434	rectCheck.bottom =
	435	rectLabel.bottom = rect.bottom;
	436	const int checkSize = GetBestSize().y;
	437	const int MARGIN = 3;
	438
	439	const bool isRightAligned = HasFlag(wxALIGN_RIGHT);
	440	if ( isRightAligned )
	441	{
	442	rectCheck.right = rect.right;
	443	rectCheck.left = rectCheck.right - checkSize;
	444
	445	rectLabel.right = rectCheck.left - MARGIN;
	446	rectLabel.left = rect.left;
	447	}
	448	else // normal, left-aligned checkbox
	449	{
	450	rectCheck.left = rect.left;
	451	rectCheck.right = rectCheck.left + checkSize;
	452
	453	rectLabel.left = rectCheck.right + MARGIN;
	454	rectLabel.right = rect.right;
	455	}
	456
	457	// show we draw a focus rect?
	458	const bool isFocused = m_isPressed \|\| FindFocus() == this;
	459
	460
	461	// draw the checkbox itself
	462	wxDCTemp dc(hdc);
	463
	464	int flags = 0;
	465	if ( !IsEnabled() )
	466	flags \|= wxCONTROL_DISABLED;
	467	switch ( Get3StateValue() )
	468	{
	469	case wxCHK_CHECKED:
	470	flags \|= wxCONTROL_CHECKED;
	471	break;
	472
	473	case wxCHK_UNDETERMINED:
	474	flags \|= wxCONTROL_PRESSED;
	475	break;
	476
	477	default:
	478	wxFAIL_MSG( _T("unexpected Get3StateValue() return value") );
	479	// fall through
	480
	481	case wxCHK_UNCHECKED:
	482	// no extra styles needed
	483	break;
	484	}
	485
	486	if ( wxFindWindowAtPoint(wxGetMousePosition()) == this )
	487	flags \|= wxCONTROL_CURRENT;
	488
	489	wxRendererNative::Get().
	490	DrawCheckBox(this, dc, wxRectFromRECT(rectCheck), flags);
	491
	492	// draw the text
	493	const wxString& label = GetLabel();
	494
	495	// first we need to measure it
	496	UINT fmt = DT_NOCLIP;
	497
	498	// drawing underlying doesn't look well with focus rect (and the native
	499	// control doesn't do it)
	500	if ( isFocused )
	501	fmt \|= DT_HIDEPREFIX;
	502	if ( isRightAligned )
	503	fmt \|= DT_RIGHT;
	504	// TODO: also use DT_HIDEPREFIX if the system is configured so
	505
	506	// we need to get the label real size first if we have to draw a focus rect
	507	// around it
	508	if ( isFocused )
	509	{
	510	if ( !::DrawText(hdc, label.wx_str(), label.length(), &rectLabel,
	511	fmt \| DT_CALCRECT) )
	512	{
	513	wxLogLastError(_T("DrawText(DT_CALCRECT)"));
	514	}
	515	}
	516
	517	if ( !IsEnabled() )
	518	{
	519	::SetTextColor(hdc, ::GetSysColor(COLOR_GRAYTEXT));
	520	}
	521
	522	if ( !::DrawText(hdc, label.wx_str(), label.length(), &rectLabel, fmt) )
	523	{
	524	wxLogLastError(_T("DrawText()"));
	525	}
	526
	527	// finally draw the focus
	528	if ( isFocused )
	529	{
	530	rectLabel.left--;
	531	rectLabel.right++;
	532	if ( !::DrawFocusRect(hdc, &rectLabel) )
	533	{
	534	wxLogLastError(_T("DrawFocusRect()"));
	535	}
	536	}
	537
	538	return true;
	539	}
	540
	541	#endif // wxUSE_CHECKBOX