src/common/stattextcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/stattextcmn.cpp
   3 // Purpose:     common (to all ports) wxStaticText functions
   4 // Author:      Vadim Zeitlin, Francesco Montorsi
   5 // Created:     2007-01-07 (extracted from dlgcmn.cpp)
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 1999-2006 Vadim Zeitlin
   8 //              (c) 2007 Francesco Montorsi
   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/private/stattext.h"
  28
  29 const wxChar *const wxMarkupEntities[][wxMARKUP_ENTITY_MAX] =
  30 {
  31     // the entities handled by SetLabel() when wxST_MARKUP is used and their referenced string
  32
  33     { wxT("&amp;"), wxT("&lt;"), wxT("&gt;"), wxT("&apos;"), wxT("&quot;") },
  34     { wxT("&"),     wxT("<"),    wxT(">"),    wxT("'"),      wxT("\"")     }
  35 };
  36
  37 #if wxUSE_STATTEXT
  38
  39 #ifndef WX_PRECOMP
  40     #include "wx/stattext.h"
  41     #include "wx/button.h"
  42     #include "wx/dcclient.h"
  43     #include "wx/intl.h"
  44     #include "wx/log.h"
  45     #include "wx/settings.h"
  46     #include "wx/sizer.h"
  47     #include "wx/containr.h"
  48 #endif
  49
  50 #include "wx/textwrapper.h"
  51
  52 extern WXDLLEXPORT_DATA(const char) wxStaticTextNameStr[] = "staticText";
  53
  54 // ----------------------------------------------------------------------------
  55 // XTI
  56 // ----------------------------------------------------------------------------
  57
  58 wxDEFINE_FLAGS( wxStaticTextStyle )
  59 wxBEGIN_FLAGS( wxStaticTextStyle )
  60 // new style border flags, we put them first to
  61 // use them for streaming out
  62 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  63 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  64 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  65 wxFLAGS_MEMBER(wxBORDER_RAISED)
  66 wxFLAGS_MEMBER(wxBORDER_STATIC)
  67 wxFLAGS_MEMBER(wxBORDER_NONE)
  68
  69 // old style border flags
  70 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  71 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  72 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  73 wxFLAGS_MEMBER(wxRAISED_BORDER)
  74 wxFLAGS_MEMBER(wxSTATIC_BORDER)
  75 wxFLAGS_MEMBER(wxBORDER)
  76
  77 // standard window styles
  78 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  79 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  80 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  81 wxFLAGS_MEMBER(wxWANTS_CHARS)
  82 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  83 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  84 wxFLAGS_MEMBER(wxVSCROLL)
  85 wxFLAGS_MEMBER(wxHSCROLL)
  86
  87 wxFLAGS_MEMBER(wxST_NO_AUTORESIZE)
  88 wxFLAGS_MEMBER(wxALIGN_LEFT)
  89 wxFLAGS_MEMBER(wxALIGN_RIGHT)
  90 wxFLAGS_MEMBER(wxALIGN_CENTRE)
  91 wxEND_FLAGS( wxStaticTextStyle )
  92
  93 wxIMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticText, wxControl, "wx/stattext.h")
  94
  95 wxBEGIN_PROPERTIES_TABLE(wxStaticText)
  96 wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString(), 0 /*flags*/, \
  97            wxT("Helpstring"), wxT("group"))
  98 wxPROPERTY_FLAGS( WindowStyle, wxStaticTextStyle, long, SetWindowStyleFlag, \
  99                  GetWindowStyleFlag, wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, \
 100                  wxT("Helpstring"), wxT("group")) // style
 101 wxEND_PROPERTIES_TABLE()
 102
 103 wxEMPTY_HANDLERS_TABLE(wxStaticText)
 104
 105 wxCONSTRUCTOR_6( wxStaticText, wxWindow*, Parent, wxWindowID, Id, \
 106                 wxString, Label, wxPoint, Position, wxSize, Size, long, WindowStyle )
 107
 108
 109 // ----------------------------------------------------------------------------
 110 // wxTextWrapper
 111 // ----------------------------------------------------------------------------
 112
 113 void wxTextWrapper::Wrap(wxWindow *win, const wxString& text, int widthMax)
 114 {
 115     wxString line;
 116
 117     wxString::const_iterator lastSpace = text.end();
 118     wxString::const_iterator lineStart = text.begin();
 119     for ( wxString::const_iterator p = lineStart; ; ++p )
 120     {
 121         if ( IsStartOfNewLine() )
 122         {
 123             OnNewLine();
 124
 125             lastSpace = text.end();
 126             line.clear();
 127             lineStart = p;
 128         }
 129
 130         if ( p == text.end() || *p == wxT('\n') )
 131         {
 132             DoOutputLine(line);
 133
 134             if ( p == text.end() )
 135                 break;
 136         }
 137         else // not EOL
 138         {
 139             if ( *p == wxT(' ') )
 140                 lastSpace = p;
 141
 142             line += *p;
 143
 144             if ( widthMax >= 0 && lastSpace != text.end() )
 145             {
 146                 int width;
 147                 win->GetTextExtent(line, &width, NULL);
 148
 149                 if ( width > widthMax )
 150                 {
 151                     // remove the last word from this line
 152                     line.erase(lastSpace - lineStart, p + 1 - lineStart);
 153                     DoOutputLine(line);
 154
 155                     // go back to the last word of this line which we didn't
 156                     // output yet
 157                     p = lastSpace;
 158                 }
 159             }
 160             //else: no wrapping at all or impossible to wrap
 161         }
 162     }
 163 }
 164
 165
 166 // ----------------------------------------------------------------------------
 167 // wxLabelWrapper: helper class for wxStaticTextBase::Wrap()
 168 // ----------------------------------------------------------------------------
 169
 170 class wxLabelWrapper : public wxTextWrapper
 171 {
 172 public:
 173     void WrapLabel(wxWindow *text, int widthMax)
 174     {
 175         m_text.clear();
 176         Wrap(text, text->GetLabel(), widthMax);
 177         text->SetLabel(m_text);
 178     }
 179
 180 protected:
 181     virtual void OnOutputLine(const wxString& line)
 182     {
 183         m_text += line;
 184     }
 185
 186     virtual void OnNewLine()
 187     {
 188         m_text += wxT('\n');
 189     }
 190
 191 private:
 192     wxString m_text;
 193 };
 194
 195
 196 // ----------------------------------------------------------------------------
 197 // wxStaticTextBase
 198 // ----------------------------------------------------------------------------
 199
 200 void wxStaticTextBase::Wrap(int width)
 201 {
 202     wxLabelWrapper wrapper;
 203     wrapper.WrapLabel(this, width);
 204 }
 205
 206 wxString wxStaticTextBase::GetLabelText() const
 207 {
 208     wxString ret(GetLabel());
 209
 210     if (HasFlag(wxST_MARKUP))
 211         ret = RemoveMarkup(ret);
 212     return RemoveMnemonics(ret);
 213 }
 214
 215 void wxStaticTextBase::SetLabelText(const wxString& text)
 216 {
 217     wxString str = text;
 218
 219     if (HasFlag(wxST_MARKUP))
 220         str = EscapeMarkup(str);        // escapes markup and the & characters (which are also mnemonics)
 221     else
 222         str = EscapeMnemonics(text);    // escape only the mnemonics
 223     SetLabel(str);
 224 }
 225
 226 /* static */
 227 wxString wxStaticTextBase::GetLabelText(const wxString& label)
 228 {
 229     wxString ret = RemoveMarkup(label);
 230         // always remove the markup (this function is static
 231         // and cannot check for wxST_MARKUP presence/absence)
 232
 233     return RemoveMnemonics(ret);
 234 }
 235
 236 /* static */
 237 wxString wxStaticTextBase::RemoveMarkup(const wxString& text)
 238 {
 239     // strip out of "text" the markup for platforms which don't support it natively
 240     bool inside_tag = false;
 241
 242     wxString label;
 243     for ( wxString::const_iterator source = text.begin();
 244           source != text.end(); ++source )
 245     {
 246         switch ( (*source).GetValue() )
 247         {
 248             case wxT('<'):
 249                 if (inside_tag)
 250                 {
 251                     wxLogDebug(wxT("Invalid markup !"));
 252                     return wxEmptyString;
 253                 }
 254                 inside_tag = true;
 255                 break;
 256
 257             case wxT('>'):
 258                 if (!inside_tag)
 259                 {
 260                     wxLogDebug(wxT("Invalid markup !"));
 261                     return wxEmptyString;
 262                 }
 263                 inside_tag = false;
 264                 break;
 265
 266             case wxT('&'):
 267                 {
 268                     if ( source+1 == text.end() )
 269                     {
 270                         wxLogDebug(wxT("Cannot use & as last character of the string '%s'"),
 271                                    text.c_str());
 272                         return wxEmptyString;
 273                     }
 274
 275                     // is this ampersand introducing a mnemonic or rather an entity?
 276                     bool isMnemonic = true;
 277                     size_t distanceFromEnd = text.end() - source;
 278                     for (size_t j=0; j < wxMARKUP_ENTITY_MAX; j++)
 279                     {
 280                         const wxChar *entity = wxMarkupEntities[wxMARKUP_ELEMENT_NAME][j];
 281                         size_t entityLen = wxStrlen(entity);
 282
 283                         if (distanceFromEnd >= entityLen &&
 284                             wxString(source, source + entityLen) == entity)
 285                         {
 286                             // replace the &entity; string with the entity reference
 287                             label << wxMarkupEntities[wxMARKUP_ELEMENT_VALUE][j];
 288                             // little exception: when the entity reference is
 289                             // "&" (i.e. when entity is "&amp;"), substitute it
 290                             // with && instead of a single ampersand:
 291                             if (*wxMarkupEntities[wxMARKUP_ELEMENT_VALUE][j] == wxT('&'))
 292                                 label << wxT('&');
 293                             // the -1 is because main for() loop already
 294                             // increments i:
 295                             source += entityLen - 1;
 296                             isMnemonic = false;
 297                             break;
 298                         }
 299                     }
 300
 301                     if (isMnemonic)
 302                         label << *source;
 303                 }
 304                 break;
 305
 306
 307             default:
 308                 if (!inside_tag)
 309                     label << *source;
 310         }
 311     }
 312
 313     return label;
 314 }
 315
 316 /* static */
 317 wxString wxStaticTextBase::EscapeMarkup(const wxString& text)
 318 {
 319     wxString ret;
 320
 321     for (wxString::const_iterator source = text.begin();
 322          source != text.end(); ++source)
 323     {
 324         bool isEntity = false;
 325
 326         // search in the list of the entities and eventually escape this character
 327         for (size_t j=0; j < wxMARKUP_ENTITY_MAX; j++)
 328         {
 329             if (*source == *wxMarkupEntities[wxMARKUP_ELEMENT_VALUE][j])
 330             {
 331                 ret << wxMarkupEntities[wxMARKUP_ELEMENT_NAME][j];
 332                 isEntity = true;
 333                 break;
 334             }
 335         }
 336
 337         if (!isEntity)
 338             ret << *source;     // this character does not need to be escaped
 339     }
 340
 341     return ret;
 342 }
 343
 344
 345 // ----------------------------------------------------------------------------
 346 // wxStaticTextBase - generic implementation for wxST_ELLIPSIZE_* support
 347 // ----------------------------------------------------------------------------
 348
 349 void wxStaticTextBase::UpdateLabel()
 350 {
 351     if (!IsEllipsized())
 352         return;
 353
 354     wxString newlabel = GetEllipsizedLabelWithoutMarkup();
 355
 356     // we need to touch the "real" label (i.e. the text set inside the control,
 357     // using port-specific functions) instead of the string returned by GetLabel().
 358     //
 359     // In fact, we must be careful not to touch the original label passed to
 360     // SetLabel() otherwise GetLabel() will behave in a strange way to the user
 361     // (e.g. returning a "Ver...ing" instead of "Very long string") !
 362     if (newlabel == DoGetLabel())
 363         return;
 364     DoSetLabel(newlabel);
 365 }
 366
 367 wxString wxStaticTextBase::GetLabelWithoutMarkup() const
 368 {
 369     wxString ret(m_labelOrig);
 370
 371     if (HasFlag(wxST_MARKUP))
 372         ret = RemoveMarkup(ret);
 373
 374     // unlike GetLabelText() we don't remove the mnemonics here!
 375     return ret;
 376 }
 377
 378 wxString wxStaticTextBase::GetEllipsizedLabelWithoutMarkup() const
 379 {
 380     // this function should be used only by ports which do not support
 381     // ellipsis in static texts: we first remove markup (which cannot
 382     // be handled safely by Ellipsize()) and then ellipsize the result.
 383
 384     wxString ret(m_labelOrig);
 385
 386     // the order of the following two blocks is important!
 387
 388     if (HasFlag(wxST_MARKUP))
 389         ret = RemoveMarkup(ret);
 390
 391     if (IsEllipsized())
 392         ret = Ellipsize(ret);
 393
 394     return ret;
 395 }
 396
 397 wxString wxStaticTextBase::Ellipsize(const wxString& label) const
 398 {
 399     wxSize sz(GetSize());
 400     if (sz.GetWidth() < 2 || sz.GetHeight() < 2)
 401     {
 402         // the size of this window is not valid (yet)
 403         return label;
 404     }
 405
 406     wxClientDC dc(const_cast<wxStaticTextBase*>(this));
 407     dc.SetFont(GetFont());
 408
 409     wxEllipsizeMode mode;
 410     if ( HasFlag(wxST_ELLIPSIZE_START) )
 411         mode = wxELLIPSIZE_START;
 412     else if ( HasFlag(wxST_ELLIPSIZE_MIDDLE) )
 413         mode = wxELLIPSIZE_MIDDLE;
 414     else if ( HasFlag(wxST_ELLIPSIZE_END) )
 415         mode = wxELLIPSIZE_END;
 416     else
 417     {
 418         wxFAIL_MSG( "should only be called if have one of wxST_ELLIPSIZE_XXX" );
 419
 420         return label;
 421     }
 422
 423     return wxControl::Ellipsize(label, dc, mode, sz.GetWidth());
 424 }
 425
 426 #endif // wxUSE_STATTEXT