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