| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: msw/radiobut.cpp |
| 3 | // Purpose: wxRadioButton |
| 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 "radiobut.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_RADIOBTN |
| 32 | |
| 33 | #ifndef WX_PRECOMP |
| 34 | #include "wx/radiobut.h" |
| 35 | #include "wx/settings.h" |
| 36 | #include "wx/dcscreen.h" |
| 37 | #endif |
| 38 | |
| 39 | #include "wx/msw/private.h" |
| 40 | |
| 41 | // ============================================================================ |
| 42 | // wxRadioButton implementation |
| 43 | // ============================================================================ |
| 44 | |
| 45 | // ---------------------------------------------------------------------------- |
| 46 | // wxRadioButton creation |
| 47 | // ---------------------------------------------------------------------------- |
| 48 | |
| 49 | |
| 50 | #if wxUSE_EXTENDED_RTTI |
| 51 | WX_DEFINE_FLAGS( wxRadioButtonStyle ) |
| 52 | |
| 53 | wxBEGIN_FLAGS( wxRadioButtonStyle ) |
| 54 | // new style border flags, we put them first to |
| 55 | // use them for streaming out |
| 56 | wxFLAGS_MEMBER(wxBORDER_SIMPLE) |
| 57 | wxFLAGS_MEMBER(wxBORDER_SUNKEN) |
| 58 | wxFLAGS_MEMBER(wxBORDER_DOUBLE) |
| 59 | wxFLAGS_MEMBER(wxBORDER_RAISED) |
| 60 | wxFLAGS_MEMBER(wxBORDER_STATIC) |
| 61 | wxFLAGS_MEMBER(wxBORDER_NONE) |
| 62 | |
| 63 | // old style border flags |
| 64 | wxFLAGS_MEMBER(wxSIMPLE_BORDER) |
| 65 | wxFLAGS_MEMBER(wxSUNKEN_BORDER) |
| 66 | wxFLAGS_MEMBER(wxDOUBLE_BORDER) |
| 67 | wxFLAGS_MEMBER(wxRAISED_BORDER) |
| 68 | wxFLAGS_MEMBER(wxSTATIC_BORDER) |
| 69 | wxFLAGS_MEMBER(wxBORDER) |
| 70 | |
| 71 | // standard window styles |
| 72 | wxFLAGS_MEMBER(wxTAB_TRAVERSAL) |
| 73 | wxFLAGS_MEMBER(wxCLIP_CHILDREN) |
| 74 | wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW) |
| 75 | wxFLAGS_MEMBER(wxWANTS_CHARS) |
| 76 | wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE) |
| 77 | wxFLAGS_MEMBER(wxALWAYS_SHOW_SB ) |
| 78 | wxFLAGS_MEMBER(wxVSCROLL) |
| 79 | wxFLAGS_MEMBER(wxHSCROLL) |
| 80 | |
| 81 | wxFLAGS_MEMBER(wxRB_GROUP) |
| 82 | |
| 83 | wxEND_FLAGS( wxRadioButtonStyle ) |
| 84 | |
| 85 | IMPLEMENT_DYNAMIC_CLASS_XTI(wxRadioButton, wxControl,"wx/radiobut.h") |
| 86 | |
| 87 | wxBEGIN_PROPERTIES_TABLE(wxRadioButton) |
| 88 | wxEVENT_PROPERTY( Click , wxEVT_COMMAND_RADIOBUTTON_SELECTED , wxCommandEvent ) |
| 89 | wxPROPERTY( Font , wxFont , SetFont , GetFont , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) |
| 90 | wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") ) |
| 91 | wxPROPERTY( Value ,bool, SetValue, GetValue,, 0 /*flags*/ , wxT("Helpstring") , wxT("group") ) |
| 92 | wxPROPERTY_FLAGS( WindowStyle , wxRadioButtonStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style |
| 93 | wxEND_PROPERTIES_TABLE() |
| 94 | |
| 95 | wxBEGIN_HANDLERS_TABLE(wxRadioButton) |
| 96 | wxEND_HANDLERS_TABLE() |
| 97 | |
| 98 | wxCONSTRUCTOR_6( wxRadioButton , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle ) |
| 99 | |
| 100 | #else |
| 101 | IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl) |
| 102 | #endif |
| 103 | |
| 104 | |
| 105 | void wxRadioButton::Init() |
| 106 | { |
| 107 | m_isChecked = false; |
| 108 | } |
| 109 | |
| 110 | bool wxRadioButton::Create(wxWindow *parent, |
| 111 | wxWindowID id, |
| 112 | const wxString& label, |
| 113 | const wxPoint& pos, |
| 114 | const wxSize& size, |
| 115 | long style, |
| 116 | const wxValidator& validator, |
| 117 | const wxString& name) |
| 118 | { |
| 119 | if ( !CreateControl(parent, id, pos, size, style, validator, name) ) |
| 120 | return false; |
| 121 | |
| 122 | long msStyle = WS_TABSTOP; |
| 123 | if ( HasFlag(wxRB_GROUP) ) |
| 124 | msStyle |= WS_GROUP; |
| 125 | |
| 126 | /* |
| 127 | wxRB_SINGLE is a temporary workaround for the following problem: if you |
| 128 | have 2 radiobuttons in the same group but which are not consecutive in |
| 129 | the dialog, Windows can enter an infinite loop! The simplest way to |
| 130 | reproduce it is to create radio button, then a panel and then another |
| 131 | radio button: then checking the last button hangs the app. |
| 132 | |
| 133 | Ideally, we'd detect (and avoid) such situation automatically but for |
| 134 | now, as I don't know how to do it, just allow the user to create |
| 135 | BS_RADIOBUTTON buttons for such situations. |
| 136 | */ |
| 137 | msStyle |= HasFlag(wxRB_SINGLE) ? BS_RADIOBUTTON : BS_AUTORADIOBUTTON; |
| 138 | |
| 139 | if ( HasFlag(wxCLIP_SIBLINGS) ) |
| 140 | msStyle |= WS_CLIPSIBLINGS; |
| 141 | |
| 142 | if ( !MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, 0) ) |
| 143 | return false; |
| 144 | |
| 145 | // for compatibility with wxGTK, the first radio button in a group is |
| 146 | // always checked (this makes sense anyhow as you need to ensure that at |
| 147 | // least one button in the group is checked and this is the simlpest way to |
| 148 | // do it) |
| 149 | if ( HasFlag(wxRB_GROUP) ) |
| 150 | SetValue(true); |
| 151 | |
| 152 | return true; |
| 153 | } |
| 154 | |
| 155 | // ---------------------------------------------------------------------------- |
| 156 | // wxRadioButton functions |
| 157 | // ---------------------------------------------------------------------------- |
| 158 | |
| 159 | void wxRadioButton::SetValue(bool value) |
| 160 | { |
| 161 | // BST_CHECKED is defined as 1, BST_UNCHECKED as 0, so we can just pass |
| 162 | // value as is (we don't use BST_XXX here as they're not defined for Win16) |
| 163 | (void)::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM)value, 0L); |
| 164 | |
| 165 | m_isChecked = value; |
| 166 | |
| 167 | // if we set the value of one radio button we also must clear all the other |
| 168 | // buttons in the same group: Windows doesn't do it automatically |
| 169 | if ( m_isChecked ) |
| 170 | { |
| 171 | const wxWindowList& siblings = GetParent()->GetChildren(); |
| 172 | wxWindowList::compatibility_iterator nodeThis = siblings.Find(this); |
| 173 | wxCHECK_RET( nodeThis, _T("radio button not a child of its parent?") ); |
| 174 | |
| 175 | // if it's not the first item of the group ... |
| 176 | if ( !HasFlag(wxRB_GROUP) ) |
| 177 | { |
| 178 | // ... turn off all radio buttons before it |
| 179 | for ( wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious(); |
| 180 | nodeBefore; |
| 181 | nodeBefore = nodeBefore->GetPrevious() ) |
| 182 | { |
| 183 | wxRadioButton *btn = wxDynamicCast(nodeBefore->GetData(), |
| 184 | wxRadioButton); |
| 185 | if ( !btn ) |
| 186 | { |
| 187 | // the radio buttons in a group must be consecutive, so |
| 188 | // there are no more of them |
| 189 | break; |
| 190 | } |
| 191 | |
| 192 | btn->SetValue(false); |
| 193 | |
| 194 | if ( btn->HasFlag(wxRB_GROUP) ) |
| 195 | { |
| 196 | // even if there are other radio buttons before this one, |
| 197 | // they're not in the same group with us |
| 198 | break; |
| 199 | } |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | // ... and also turn off all buttons after this one |
| 204 | for ( wxWindowList::compatibility_iterator nodeAfter = nodeThis->GetNext(); |
| 205 | nodeAfter; |
| 206 | nodeAfter = nodeAfter->GetNext() ) |
| 207 | { |
| 208 | wxRadioButton *btn = wxDynamicCast(nodeAfter->GetData(), |
| 209 | wxRadioButton); |
| 210 | |
| 211 | if ( !btn || btn->HasFlag(wxRB_GROUP) ) |
| 212 | { |
| 213 | // no more buttons or the first button of the next group |
| 214 | break; |
| 215 | } |
| 216 | |
| 217 | btn->SetValue(false); |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | bool wxRadioButton::GetValue() const |
| 223 | { |
| 224 | wxASSERT_MSG( m_isChecked == |
| 225 | (::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0L) != 0), |
| 226 | _T("wxRadioButton::m_isChecked is out of sync?") ); |
| 227 | |
| 228 | return m_isChecked; |
| 229 | } |
| 230 | |
| 231 | // ---------------------------------------------------------------------------- |
| 232 | // wxRadioButton event processing |
| 233 | // ---------------------------------------------------------------------------- |
| 234 | |
| 235 | void wxRadioButton::Command (wxCommandEvent& event) |
| 236 | { |
| 237 | SetValue(event.m_commandInt != 0); |
| 238 | ProcessCommand(event); |
| 239 | } |
| 240 | |
| 241 | bool wxRadioButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) |
| 242 | { |
| 243 | if ( param != BN_CLICKED ) |
| 244 | return false; |
| 245 | |
| 246 | if ( !m_isChecked ) |
| 247 | { |
| 248 | // we have to do this for BS_RADIOBUTTON anyhow and, strangely enough, |
| 249 | // sometimes this is needed even for BS_AUTORADIOBUTTON (when we |
| 250 | // receive focus the button gets BN_CLICKED but stays unchecked!) |
| 251 | SetValue(true); |
| 252 | |
| 253 | wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId()); |
| 254 | event.SetEventObject( this ); |
| 255 | event.SetInt(true); // always checked |
| 256 | |
| 257 | ProcessCommand(event); |
| 258 | } |
| 259 | |
| 260 | return true; |
| 261 | } |
| 262 | |
| 263 | // ---------------------------------------------------------------------------- |
| 264 | // wxRadioButton geometry |
| 265 | // ---------------------------------------------------------------------------- |
| 266 | |
| 267 | wxSize wxRadioButton::DoGetBestSize() const |
| 268 | { |
| 269 | static int s_radioSize = 0; |
| 270 | |
| 271 | if ( !s_radioSize ) |
| 272 | { |
| 273 | wxScreenDC dc; |
| 274 | dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT)); |
| 275 | |
| 276 | s_radioSize = dc.GetCharHeight(); |
| 277 | } |
| 278 | |
| 279 | wxString str = GetLabel(); |
| 280 | |
| 281 | int wRadio, hRadio; |
| 282 | if ( !str.empty() ) |
| 283 | { |
| 284 | GetTextExtent(str, &wRadio, &hRadio); |
| 285 | wRadio += s_radioSize + GetCharWidth(); |
| 286 | |
| 287 | if ( hRadio < s_radioSize ) |
| 288 | hRadio = s_radioSize; |
| 289 | } |
| 290 | else |
| 291 | { |
| 292 | wRadio = s_radioSize; |
| 293 | hRadio = s_radioSize; |
| 294 | } |
| 295 | |
| 296 | return wxSize(wRadio, hRadio); |
| 297 | } |
| 298 | |
| 299 | #endif // wxUSE_RADIOBTN |
| 300 | |