src/msw/checkbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "checkbox.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_CHECKBOX
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/checkbox.h"
  35     #include "wx/brush.h"
  36     #include "wx/dcscreen.h"
  37     #include "wx/settings.h"
  38 #endif
  39
  40 #include "wx/msw/private.h"
  41
  42 #ifndef BST_UNCHECKED
  43     #define BST_UNCHECKED 0x0000
  44 #endif
  45
  46 #ifndef BST_CHECKED
  47     #define BST_CHECKED 0x0001
  48 #endif
  49
  50 #ifndef BST_INDETERMINATE
  51     #define BST_INDETERMINATE 0x0002
  52 #endif
  53
  54 // ============================================================================
  55 // implementation
  56 // ============================================================================
  57
  58 #if wxUSE_EXTENDED_RTTI
  59 WX_DEFINE_FLAGS( wxCheckBoxStyle )
  60
  61 wxBEGIN_FLAGS( wxCheckBoxStyle )
  62     // new style border flags, we put them first to
  63     // use them for streaming out
  64     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  65     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  66     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  67     wxFLAGS_MEMBER(wxBORDER_RAISED)
  68     wxFLAGS_MEMBER(wxBORDER_STATIC)
  69     wxFLAGS_MEMBER(wxBORDER_NONE)
  70
  71     // old style border flags
  72     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  73     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  74     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  75     wxFLAGS_MEMBER(wxRAISED_BORDER)
  76     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  77     wxFLAGS_MEMBER(wxNO_BORDER)
  78
  79     // standard window styles
  80     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  81     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  82     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  83     wxFLAGS_MEMBER(wxWANTS_CHARS)
  84     wxFLAGS_MEMBER(wxNO_FULL_REPAINT_ON_RESIZE)
  85     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  86     wxFLAGS_MEMBER(wxVSCROLL)
  87     wxFLAGS_MEMBER(wxHSCROLL)
  88
  89 wxEND_FLAGS( wxCheckBoxStyle )
  90
  91 IMPLEMENT_DYNAMIC_CLASS_XTI(wxCheckBox, wxControl,"wx/checkbox.h")
  92
  93 wxBEGIN_PROPERTIES_TABLE(wxCheckBox)
  94     wxEVENT_PROPERTY( Click , wxEVT_COMMAND_CHECKBOX_CLICKED , wxCommandEvent )
  95
  96     wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  97     wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  98     wxPROPERTY( Value ,bool, SetValue, GetValue, EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  99     wxPROPERTY_FLAGS( WindowStyle , wxCheckBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 100 wxEND_PROPERTIES_TABLE()
 101
 102 wxBEGIN_HANDLERS_TABLE(wxCheckBox)
 103 wxEND_HANDLERS_TABLE()
 104
 105 wxCONSTRUCTOR_6( wxCheckBox , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
 106 #else
 107 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox, wxControl)
 108 #endif
 109
 110
 111 // ----------------------------------------------------------------------------
 112 // wxCheckBox
 113 // ----------------------------------------------------------------------------
 114
 115 bool wxCheckBox::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
 116 {
 117     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, m_windowId);
 118     wxCheckBoxState state = Get3StateValue();
 119
 120     // If the style flag to allow the user setting the undetermined state
 121     // is not set, then skip the undetermined state and set it to unchecked.
 122     if ( state == wxCHK_UNDETERMINED && !Is3rdStateAllowedForUser() )
 123     {
 124         state = wxCHK_UNCHECKED;
 125         Set3StateValue(state);
 126     }
 127
 128     event.SetInt(state);
 129     event.SetEventObject(this);
 130     ProcessCommand(event);
 131
 132     return true;
 133 }
 134
 135 bool wxCheckBox::Create(wxWindow *parent,
 136                         wxWindowID id,
 137                         const wxString& label,
 138                         const wxPoint& pos,
 139                         const wxSize& size, long style,
 140                         const wxValidator& validator,
 141                         const wxString& name)
 142 {
 143     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 144         return false;
 145
 146     long msStyle = WS_TABSTOP;
 147
 148     if ( style & wxCHK_3STATE )
 149     {
 150         msStyle |= BS_AUTO3STATE;
 151     }
 152     else
 153     {
 154         wxASSERT_MSG( !Is3rdStateAllowedForUser(),
 155             wxT("Using wxCH_ALLOW_3RD_STATE_FOR_USER")
 156             wxT(" style flag for a 2-state checkbox is useless") );
 157         msStyle |= BS_AUTOCHECKBOX;
 158     }
 159
 160     if ( style & wxALIGN_RIGHT )
 161     {
 162         msStyle |= BS_LEFTTEXT | BS_RIGHT;
 163     }
 164
 165     return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, 0);
 166 }
 167
 168
 169 wxSize wxCheckBox::DoGetBestSize() const
 170 {
 171     static int s_checkSize = 0;
 172
 173     if ( !s_checkSize )
 174     {
 175         wxScreenDC dc;
 176         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 177
 178         s_checkSize = dc.GetCharHeight();
 179     }
 180
 181     wxString str = wxGetWindowText(GetHWND());
 182
 183     int wCheckbox, hCheckbox;
 184     if ( !str.IsEmpty() )
 185     {
 186         GetTextExtent(str, &wCheckbox, &hCheckbox);
 187         wCheckbox += s_checkSize + GetCharWidth();
 188
 189         if ( hCheckbox < s_checkSize )
 190             hCheckbox = s_checkSize;
 191     }
 192     else
 193     {
 194         wCheckbox = s_checkSize;
 195         hCheckbox = s_checkSize;
 196     }
 197 #ifdef __WXWINCE__
 198     hCheckbox += 1;
 199 #endif
 200
 201     return wxSize(wCheckbox, hCheckbox);
 202 }
 203
 204 WXHBRUSH wxCheckBox::MSWGetDefaultBgBrush()
 205 {
 206     return ::GetStockObject(NULL_BRUSH);
 207 }
 208
 209 void wxCheckBox::SetValue(bool val)
 210 {
 211     if (val)
 212     {
 213         Set3StateValue(wxCHK_CHECKED);
 214     }
 215     else
 216     {
 217         Set3StateValue(wxCHK_UNCHECKED);
 218     }
 219 }
 220
 221 bool wxCheckBox::GetValue() const
 222 {
 223     return (Get3StateValue() != 0);
 224 }
 225
 226 void wxCheckBox::Command(wxCommandEvent& event)
 227 {
 228     int state = event.GetInt();
 229     wxCHECK_RET( (state == wxCHK_UNCHECKED) || (state == wxCHK_CHECKED)
 230         || (state == wxCHK_UNDETERMINED),
 231         wxT("event.GetInt() returned an invalid checkbox state") );
 232
 233     Set3StateValue((wxCheckBoxState) state);
 234     ProcessCommand(event);
 235 }
 236
 237 wxCOMPILE_TIME_ASSERT(wxCHK_UNCHECKED == BST_UNCHECKED
 238     && wxCHK_CHECKED == BST_CHECKED
 239     && wxCHK_UNDETERMINED == BST_INDETERMINATE, EnumValuesIncorrect);
 240
 241 void wxCheckBox::DoSet3StateValue(wxCheckBoxState state)
 242 {
 243     ::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM) state, 0);
 244 }
 245
 246 wxCheckBoxState wxCheckBox::DoGet3StateValue() const
 247 {
 248 #ifdef __WIN32__
 249     return (wxCheckBoxState) ::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0);
 250 #else
 251     return (wxCheckBoxState) ((::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0)
 252         & 0x001) == 0x001);
 253 #endif
 254
 255 }
 256
 257 #endif // wxUSE_CHECKBOX