src/common/dlgcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/dlgcmn.cpp
   3 // Purpose:     common (to all ports) wxDialog functions
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.06.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   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 #include "wx/dialog.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/button.h"
  31     #include "wx/dcclient.h"
  32     #include "wx/intl.h"
  33     #include "wx/settings.h"
  34     #include "wx/stattext.h"
  35     #include "wx/sizer.h"
  36     #include "wx/containr.h"
  37 #endif
  38
  39 #include "wx/statline.h"
  40 #include "wx/sysopt.h"
  41
  42 #if wxUSE_STATTEXT
  43
  44 // ----------------------------------------------------------------------------
  45 // wxTextWrapper
  46 // ----------------------------------------------------------------------------
  47
  48 // this class is used to wrap the text on word boundary: wrapping is done by
  49 // calling OnStartLine() and OnOutputLine() functions
  50 class wxTextWrapper
  51 {
  52 public:
  53     wxTextWrapper() { m_eol = false; }
  54
  55     // win is used for getting the font, text is the text to wrap, width is the
  56     // max line width or -1 to disable wrapping
  57     void Wrap(wxWindow *win, const wxString& text, int widthMax);
  58
  59     // we don't need it, but just to avoid compiler warnings
  60     virtual ~wxTextWrapper() { }
  61
  62 protected:
  63     // line may be empty
  64     virtual void OnOutputLine(const wxString& line) = 0;
  65
  66     // called at the start of every new line (except the very first one)
  67     virtual void OnNewLine() { }
  68
  69 private:
  70     // call OnOutputLine() and set m_eol to true
  71     void DoOutputLine(const wxString& line)
  72     {
  73         OnOutputLine(line);
  74
  75         m_eol = true;
  76     }
  77
  78     // this function is a destructive inspector: when it returns true it also
  79     // resets the flag to false so calling it again woulnd't return true any
  80     // more
  81     bool IsStartOfNewLine()
  82     {
  83         if ( !m_eol )
  84             return false;
  85
  86         m_eol = false;
  87
  88         return true;
  89     }
  90
  91
  92     bool m_eol;
  93 };
  94
  95 #endif // wxUSE_STATTEXT
  96
  97 // ----------------------------------------------------------------------------
  98 // wxDialogBase
  99 // ----------------------------------------------------------------------------
 100
 101 // FIXME - temporary hack in absence of wxTopLevelWindow, should be always used
 102 #ifdef wxTopLevelWindowNative
 103 BEGIN_EVENT_TABLE(wxDialogBase, wxTopLevelWindow)
 104     WX_EVENT_TABLE_CONTROL_CONTAINER(wxDialogBase)
 105 END_EVENT_TABLE()
 106
 107 WX_DELEGATE_TO_CONTROL_CONTAINER(wxDialogBase)
 108 #endif
 109
 110 void wxDialogBase::Init()
 111 {
 112     m_returnCode = 0;
 113     m_affirmativeId = wxID_OK;
 114     m_escapeId = wxID_ANY;
 115
 116     // the dialogs have this flag on by default to prevent the events from the
 117     // dialog controls from reaching the parent frame which is usually
 118     // undesirable and can lead to unexpected and hard to find bugs
 119     SetExtraStyle(GetExtraStyle() | wxWS_EX_BLOCK_EVENTS);
 120
 121 #ifdef wxTopLevelWindowNative // FIXME - temporary hack, should be always used!
 122     m_container.SetContainerWindow(this);
 123 #endif
 124 }
 125
 126 #if wxUSE_STATTEXT
 127
 128 void wxTextWrapper::Wrap(wxWindow *win, const wxString& text, int widthMax)
 129 {
 130     const wxChar *lastSpace = NULL;
 131     wxString line;
 132
 133     const wxChar *lineStart = text.c_str();
 134     for ( const wxChar *p = lineStart; ; p++ )
 135     {
 136         if ( IsStartOfNewLine() )
 137         {
 138             OnNewLine();
 139
 140             lastSpace = NULL;
 141             line.clear();
 142             lineStart = p;
 143         }
 144
 145         if ( *p == _T('\n') || *p == _T('\0') )
 146         {
 147             DoOutputLine(line);
 148
 149             if ( *p == _T('\0') )
 150                 break;
 151         }
 152         else // not EOL
 153         {
 154             if ( *p == _T(' ') )
 155                 lastSpace = p;
 156
 157             line += *p;
 158
 159             if ( widthMax >= 0 && lastSpace )
 160             {
 161                 int width;
 162                 win->GetTextExtent(line, &width, NULL);
 163
 164                 if ( width > widthMax )
 165                 {
 166                     // remove the last word from this line
 167                     line.erase(lastSpace - lineStart, p + 1 - lineStart);
 168                     DoOutputLine(line);
 169
 170                     // go back to the last word of this line which we didn't
 171                     // output yet
 172                     p = lastSpace;
 173                 }
 174             }
 175             //else: no wrapping at all or impossible to wrap
 176         }
 177     }
 178 }
 179
 180 class wxTextSizerWrapper : public wxTextWrapper
 181 {
 182 public:
 183     wxTextSizerWrapper(wxWindow *win)
 184     {
 185         m_win = win;
 186         m_hLine = 0;
 187     }
 188
 189     wxSizer *CreateSizer(const wxString& text, int widthMax)
 190     {
 191         m_sizer = new wxBoxSizer(wxVERTICAL);
 192         Wrap(m_win, text, widthMax);
 193         return m_sizer;
 194     }
 195
 196 protected:
 197     virtual void OnOutputLine(const wxString& line)
 198     {
 199         if ( !line.empty() )
 200         {
 201             m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
 202         }
 203         else // empty line, no need to create a control for it
 204         {
 205             if ( !m_hLine )
 206                 m_hLine = m_win->GetCharHeight();
 207
 208             m_sizer->Add(5, m_hLine);
 209         }
 210     }
 211
 212 private:
 213     wxWindow *m_win;
 214     wxSizer *m_sizer;
 215     int m_hLine;
 216 };
 217
 218 wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
 219 {
 220     // I admit that this is complete bogus, but it makes
 221     // message boxes work for pda screens temporarily..
 222     int widthMax = -1;
 223     const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
 224     if (is_pda)
 225     {
 226         widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
 227     }
 228
 229     // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
 230     // the static messages created by CreateTextSizer() (used by wxMessageBox,
 231     // for example), we don't want this special meaning, so we need to quote it
 232     wxString text(message);
 233     text.Replace(_T("&"), _T("&&"));
 234
 235     wxTextSizerWrapper wrapper(this);
 236
 237     return wrapper.CreateSizer(text, widthMax);
 238 }
 239
 240 class wxLabelWrapper : public wxTextWrapper
 241 {
 242 public:
 243     void WrapLabel(wxWindow *text, int widthMax)
 244     {
 245         m_text.clear();
 246         Wrap(text, text->GetLabel(), widthMax);
 247         text->SetLabel(m_text);
 248     }
 249
 250 protected:
 251     virtual void OnOutputLine(const wxString& line)
 252     {
 253         m_text += line;
 254     }
 255
 256     virtual void OnNewLine()
 257     {
 258         m_text += _T('\n');
 259     }
 260
 261 private:
 262     wxString m_text;
 263 };
 264
 265 // NB: don't "factor out" the scope operator, SGI MIPSpro 7.3 (but not 7.4)
 266 //     gets confused if it doesn't immediately follow the class name
 267 void
 268 #if defined(__WXGTK__) && !defined(__WXUNIVERSAL__)
 269 wxStaticText::
 270 #else
 271 wxStaticTextBase::
 272 #endif
 273 Wrap(int width)
 274 {
 275     wxLabelWrapper wrapper;
 276     wrapper.WrapLabel(this, width);
 277 }
 278
 279 #endif // wxUSE_STATTEXT
 280
 281 wxSizer *wxDialogBase::CreateButtonSizer( long flags, bool separated, wxCoord distance )
 282 {
 283 #ifdef __SMARTPHONE__
 284     wxUnusedVar(separated);
 285     wxUnusedVar(distance);
 286
 287     wxDialog* dialog = (wxDialog*) this;
 288     if (flags & wxOK){
 289         dialog->SetLeftMenu(wxID_OK);
 290     }
 291
 292     if (flags & wxCANCEL){
 293         dialog->SetRightMenu(wxID_CANCEL);
 294     }
 295
 296     if (flags & wxYES){
 297         dialog->SetLeftMenu(wxID_YES);
 298     }
 299
 300     if (flags & wxNO){
 301         dialog->SetLeftMenu(wxID_NO);
 302     }
 303     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 304     return sizer;
 305
 306 #else // !__SMARTPHONE__
 307
 308 #ifdef __POCKETPC__
 309     // PocketPC guidelines recommend for Ok/Cancel dialogs to use
 310     // OK button located inside caption bar and implement Cancel functionality
 311     // through Undo outside dialog. As native behaviour this will be default
 312     // here but can be easily replaced with real wxButtons
 313     // with "wince.dialog.real-ok-cancel" option set to 1
 314     if ( ((flags & ~(wxCANCEL|wxNO_DEFAULT))== wxOK) &&
 315          (wxSystemOptions::GetOptionInt(wxT("wince.dialog.real-ok-cancel"))==0)
 316        )
 317     {
 318         wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 319         return sizer;
 320     }
 321 #endif // __POCKETPC__
 322
 323 #if wxUSE_BUTTON
 324
 325     wxSizer* buttonSizer = CreateStdDialogButtonSizer( flags );
 326
 327     // Mac Human Interface Guidelines recommend not to use static lines as grouping elements
 328 #if wxUSE_STATLINE && !defined(__WXMAC__)
 329     if(!separated)
 330         return buttonSizer;
 331
 332     wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
 333     topsizer->Add( new wxStaticLine( this, wxID_ANY ), 0, wxEXPAND | wxBOTTOM, distance );
 334     topsizer->Add( buttonSizer, 0, wxEXPAND );
 335     return topsizer;
 336
 337 #else // !wxUSE_STATLINE
 338
 339     wxUnusedVar(separated);
 340     wxUnusedVar(distance);
 341     return buttonSizer;
 342
 343 #endif // wxUSE_STATLINE/!wxUSE_STATLINE
 344
 345 #else // !wxUSE_BUTTON
 346
 347     wxUnusedVar(separated);
 348     wxUnusedVar(distance);
 349     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 350     return sizer;
 351
 352 #endif // wxUSE_BUTTON/!wxUSE_BUTTON
 353
 354 #endif // __SMARTPHONE__/!__SMARTPHONE__
 355 }
 356
 357 #if wxUSE_BUTTON
 358
 359 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 360 {
 361     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 362
 363     wxButton *ok = NULL;
 364     wxButton *yes = NULL;
 365     wxButton *no = NULL;
 366
 367     if (flags & wxOK){
 368         ok = new wxButton(this, wxID_OK);
 369         sizer->AddButton(ok);
 370     }
 371
 372     if (flags & wxCANCEL){
 373         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 374         sizer->AddButton(cancel);
 375     }
 376
 377     if (flags & wxYES){
 378         yes = new wxButton(this, wxID_YES);
 379         sizer->AddButton(yes);
 380     }
 381
 382     if (flags & wxNO){
 383         no = new wxButton(this, wxID_NO);
 384         sizer->AddButton(no);
 385     }
 386
 387     if (flags & wxHELP){
 388         wxButton *help = new wxButton(this, wxID_HELP);
 389         sizer->AddButton(help);
 390     }
 391
 392     if (flags & wxNO_DEFAULT)
 393     {
 394         if (no)
 395         {
 396             no->SetDefault();
 397             no->SetFocus();
 398         }
 399     }
 400     else
 401     {
 402         if (ok)
 403         {
 404             ok->SetDefault();
 405             ok->SetFocus();
 406         }
 407         else if (yes)
 408         {
 409             yes->SetDefault();
 410             yes->SetFocus();
 411         }
 412     }
 413
 414     if (flags & wxOK)
 415         SetAffirmativeId(wxID_OK);
 416     else if (flags & wxYES)
 417         SetAffirmativeId(wxID_YES);
 418
 419     sizer->Realize();
 420
 421     return sizer;
 422 }
 423
 424 #endif // wxUSE_BUTTON