src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "textctrl.h"
  13 #endif
  14
  15 #include "wx/textctrl.h"
  16 #include "wx/utils.h"
  17
  18 //-----------------------------------------------------------------------------
  19 //  wxTextCtrl
  20 //-----------------------------------------------------------------------------
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  23
  24 void gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  25 {
  26   win->m_modified = TRUE;
  27 };
  28
  29
  30 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  31 //  EVT_CHAR(wxTextCtrl::OnChar)
  32 END_EVENT_TABLE()
  33
  34 wxTextCtrl::wxTextCtrl(void) : streambuf()
  35 {
  36   m_modified = FALSE;
  37 };
  38
  39 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
  40       const wxPoint &pos, const wxSize &size,
  41       int style, const wxString &name ) : streambuf()
  42 {
  43   m_modified = FALSE;
  44   Create( parent, id, value, pos, size, style, name );
  45 };
  46
  47 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
  48       const wxPoint &pos, const wxSize &size,
  49       int style, const wxString &name )
  50 {
  51   m_needParent = TRUE;
  52
  53   PreCreation( parent, id, pos, size, style, name );
  54
  55   if (style & wxTE_MULTILINE)
  56     m_widget = gtk_text_new( NULL, NULL );
  57   else
  58     m_widget = gtk_entry_new();
  59
  60   wxSize newSize = size;
  61   if (newSize.x == -1) newSize.x = 80;
  62   if (newSize.y == -1) newSize.y = 26;
  63   SetSize( newSize.x, newSize.y );
  64
  65   PostCreation();
  66
  67   // we want to be notified about text changes
  68   gtk_signal_connect(GTK_OBJECT(m_widget), "changed",
  69                      GTK_SIGNAL_FUNC(gtk_text_changed_callback),
  70                      (gpointer)this);
  71
  72   if (!value.IsNull())
  73   {
  74     gint tmp = 0;
  75     gtk_editable_insert_text( GTK_EDITABLE(m_widget), value, value.Length(), &tmp );
  76   };
  77
  78   if (style & wxREADONLY)
  79   {
  80   }
  81   else
  82   {
  83     if (style & wxTE_MULTILINE) gtk_text_set_editable( GTK_TEXT(m_widget), 1 );
  84   };
  85
  86   Show( TRUE );
  87
  88   return TRUE;
  89 };
  90
  91 wxString wxTextCtrl::GetValue(void) const
  92 {
  93   wxString tmp;
  94   if (m_windowStyle & wxTE_MULTILINE)
  95   {
  96     gint len = gtk_text_get_length( GTK_TEXT(m_widget) );
  97     tmp = gtk_editable_get_chars( GTK_EDITABLE(m_widget), 0, len );
  98   }
  99   else
 100   {
 101     tmp = gtk_entry_get_text( GTK_ENTRY(m_widget) );
 102   };
 103   return tmp;
 104 };
 105
 106 void wxTextCtrl::SetValue( const wxString &value )
 107 {
 108   wxString tmp = "";
 109   if (!value.IsNull()) tmp = value;
 110   if (m_windowStyle & wxTE_MULTILINE)
 111   {
 112     gint len = gtk_text_get_length( GTK_TEXT(m_widget) );
 113     gtk_editable_delete_text( GTK_EDITABLE(m_widget), 0, len );
 114     len = 0;
 115     gtk_editable_insert_text( GTK_EDITABLE(m_widget), tmp, tmp.Length(), &len );
 116   }
 117   else
 118   {
 119     gtk_entry_set_text( GTK_ENTRY(m_widget), tmp );
 120   };
 121 };
 122
 123 void wxTextCtrl::WriteText( const wxString &text )
 124 {
 125   if (text.IsNull()) return;
 126
 127   if (m_windowStyle & wxTE_MULTILINE)
 128   {
 129     gint len = gtk_text_get_length( GTK_TEXT(m_widget) );
 130     gtk_editable_insert_text( GTK_EDITABLE(m_widget), text, text.Length(), &len );
 131   }
 132   else
 133   {
 134     gtk_entry_append_text( GTK_ENTRY(m_widget), text );
 135   };
 136 };
 137
 138 bool wxTextCtrl::LoadFile( const wxString &WXUNUSED(file) )
 139 {
 140   wxFAIL_MSG("wxTextCtrl::LoadFile not implemented");
 141
 142   return FALSE;
 143 };
 144
 145 bool wxTextCtrl::SaveFile( const wxString &WXUNUSED(file) )
 146 {
 147   wxFAIL_MSG("wxTextCtrl::SaveFile not implemented");
 148
 149   return FALSE;
 150 };
 151
 152 bool wxTextCtrl::IsModified(void)
 153 {
 154   return m_modified;
 155 };
 156
 157 void wxTextCtrl::DiscardEdits(void)
 158 {
 159   m_modified = FALSE;
 160 };
 161
 162 /*
 163 wxString wxTextCtrl::GetLineText( long lineNo ) const
 164 {
 165 };
 166
 167
 168 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &event )
 169 {
 170 };
 171
 172 long wxTextCtrl::PositionToXY( long pos, long *x, long *y ) const
 173 {
 174 };
 175
 176 long wxTextCtrl::XYToPosition( long x, long y )
 177 {
 178 };
 179
 180 int wxTextCtrl::GetNumberOfLines(void)
 181 {
 182 };
 183
 184 */
 185 void wxTextCtrl::SetInsertionPoint( long pos )
 186 {
 187   int tmp = (int) pos;
 188   if (m_windowStyle & wxTE_MULTILINE)
 189     gtk_text_set_point( GTK_TEXT(m_widget), tmp );
 190   else
 191     gtk_entry_set_position( GTK_ENTRY(m_widget), tmp );
 192 };
 193
 194 void wxTextCtrl::SetInsertionPointEnd(void)
 195 {
 196   int pos = 0;
 197   if (m_windowStyle & wxTE_MULTILINE)
 198     pos = gtk_text_get_length( GTK_TEXT(m_widget) );
 199   else
 200     pos = GTK_ENTRY(m_widget)->text_length;
 201   SetInsertionPoint( pos-1 );
 202 };
 203
 204 void wxTextCtrl::SetEditable( bool editable )
 205 {
 206   if (m_windowStyle & wxTE_MULTILINE)
 207     gtk_text_set_editable( GTK_TEXT(m_widget), editable );
 208   else
 209     gtk_entry_set_editable( GTK_ENTRY(m_widget), editable );
 210 };
 211
 212 void wxTextCtrl::SetSelection( long from, long to )
 213 {
 214   gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 215 };
 216
 217 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 218 {
 219   wxFAIL_MSG("wxTextCtrl::ShowPosition not implemented");
 220 };
 221
 222 long wxTextCtrl::GetInsertionPoint(void) const
 223 {
 224   return (long) GTK_EDITABLE(m_widget)->current_pos;
 225 };
 226
 227 long wxTextCtrl::GetLastPosition(void) const
 228 {
 229   int pos = 0;
 230   if (m_windowStyle & wxTE_MULTILINE)
 231     pos = gtk_text_get_length( GTK_TEXT(m_widget) );
 232   else
 233     pos = GTK_ENTRY(m_widget)->text_length;
 234   return (long)pos-1;
 235 };
 236
 237 void wxTextCtrl::Remove( long from, long to )
 238 {
 239   gtk_editable_delete_text( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 240 };
 241
 242 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 243 {
 244   gtk_editable_delete_text( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 245   if (value.IsNull()) return;
 246   gint pos = (gint)to;
 247   gtk_editable_insert_text( GTK_EDITABLE(m_widget), value, value.Length(), &pos );
 248 };
 249
 250 void wxTextCtrl::Cut(void)
 251 {
 252   gtk_editable_cut_clipboard( GTK_EDITABLE(m_widget), 0 );
 253 };
 254
 255 void wxTextCtrl::Copy(void)
 256 {
 257   gtk_editable_copy_clipboard( GTK_EDITABLE(m_widget), 0 );
 258 };
 259
 260 void wxTextCtrl::Paste(void)
 261 {
 262   gtk_editable_paste_clipboard( GTK_EDITABLE(m_widget), 0 );
 263 };
 264
 265 void wxTextCtrl::Delete(void)
 266 {
 267   SetValue( "" );
 268 };
 269
 270 void wxTextCtrl::OnChar( wxKeyEvent &WXUNUSED(event) )
 271 {
 272 };
 273
 274 int wxTextCtrl::overflow(int c)
 275 {
 276   // Make sure there is a holding area
 277   if ( allocate()==EOF )
 278   {
 279     wxError("Streambuf allocation failed","Internal error");
 280     return EOF;
 281   }
 282
 283   // Verify that there are no characters in get area
 284   if ( gptr() && gptr() < egptr() )
 285   {
 286      wxError("Who's trespassing my get area?","Internal error");
 287      return EOF;
 288   }
 289
 290   // Reset get area
 291   setg(0,0,0);
 292
 293   // Make sure there is a put area
 294   if ( ! pptr() )
 295   {
 296 /* This doesn't seem to be fatal so comment out error message */
 297 //    wxError("Put area not opened","Internal error");
 298     setp( base(), base() );
 299   }
 300
 301   // Determine how many characters have been inserted but no consumed
 302   int plen = pptr() - pbase();
 303
 304   // Now Jerry relies on the fact that the buffer is at least 2 chars
 305   // long, but the holding area "may be as small as 1" ???
 306   // And we need an additional \0, so let's keep this inefficient but
 307   // safe copy.
 308
 309   // If c!=EOF, it is a character that must also be comsumed
 310   int xtra = c==EOF? 0 : 1;
 311
 312   // Write temporary C-string to wxTextWindow
 313   {
 314   char *txt = new char[plen+xtra+1];
 315   memcpy(txt, pbase(), plen);
 316   txt[plen] = (char)c;     // append c
 317   txt[plen+xtra] = '\0';   // append '\0' or overwrite c
 318     // If the put area already contained \0, output will be truncated there
 319   WriteText(txt);
 320     delete[] txt;
 321   }
 322
 323   // Reset put area
 324   setp(pbase(), epptr());
 325
 326 #if defined(__WATCOMC__)
 327   return __NOT_EOF;
 328 #elif defined(zapeof)     // HP-UX (all cfront based?)
 329   return zapeof(c);
 330 #else
 331   return c!=EOF ? c : 0;  // this should make everybody happy
 332 #endif
 333
 334 /* OLD CODE
 335   int len = pptr() - pbase();
 336   char *txt = new char[len+1];
 337   strncpy(txt, pbase(), len);
 338   txt[len] = '\0';
 339   (*this) << txt;
 340   setp(pbase(), epptr());
 341   delete[] txt;
 342   return EOF;
 343 */
 344 };
 345
 346 int wxTextCtrl::sync(void)
 347 {
 348   // Verify that there are no characters in get area
 349   if ( gptr() && gptr() < egptr() )
 350   {
 351      wxError("Who's trespassing my get area?","Internal error");
 352      return EOF;
 353   }
 354
 355   if ( pptr() && pptr() > pbase() ) return overflow(EOF);
 356
 357   return 0;
 358 /* OLD CODE
 359   int len = pptr() - pbase();
 360   char *txt = new char[len+1];
 361   strncpy(txt, pbase(), len);
 362   txt[len] = '\0';
 363   (*this) << txt;
 364   setp(pbase(), epptr());
 365   delete[] txt;
 366   return 0;
 367 */
 368 };
 369
 370 int wxTextCtrl::underflow(void)
 371 {
 372   return EOF;
 373 };
 374
 375 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 376 {
 377   WriteText(s);
 378   return *this;
 379 }
 380
 381 wxTextCtrl& wxTextCtrl::operator<<(float f)
 382 {
 383   static char buf[100];
 384   sprintf(buf, "%.2f", f);
 385   WriteText(buf);
 386   return *this;
 387 }
 388
 389 wxTextCtrl& wxTextCtrl::operator<<(double d)
 390 {
 391   static char buf[100];
 392   sprintf(buf, "%.2f", d);
 393   WriteText(buf);
 394   return *this;
 395 }
 396
 397 wxTextCtrl& wxTextCtrl::operator<<(int i)
 398 {
 399   static char buf[100];
 400   sprintf(buf, "%i", i);
 401   WriteText(buf);
 402   return *this;
 403 }
 404
 405 wxTextCtrl& wxTextCtrl::operator<<(long i)
 406 {
 407   static char buf[100];
 408   sprintf(buf, "%ld", i);
 409   WriteText(buf);
 410   return *this;
 411 }
 412
 413 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 414 {
 415   char buf[2];
 416
 417   buf[0] = c;
 418   buf[1] = 0;
 419   WriteText(buf);
 420   return *this;
 421 }
 422