src/common/dlgcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "dialogbase.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 #ifndef WX_PRECOMP
  32     #include "wx/button.h"
  33     #include "wx/dialog.h"
  34     #include "wx/dcclient.h"
  35     #include "wx/intl.h"
  36     #include "wx/settings.h"
  37     #include "wx/stattext.h"
  38     #include "wx/sizer.h"
  39     #include "wx/button.h"
  40     #include "wx/containr.h"
  41 #endif
  42
  43 #if wxUSE_STATTEXT
  44
  45 // ----------------------------------------------------------------------------
  46 // wxTextWrapper
  47 // ----------------------------------------------------------------------------
  48
  49 // this class is used to wrap the text on word boundary: wrapping is done by
  50 // calling OnStartLine() and OnOutputLine() functions
  51 class wxTextWrapper
  52 {
  53 public:
  54     wxTextWrapper() { m_eol = false; }
  55
  56     // win is used for getting the font, text is the text to wrap, width is the
  57     // max line width or -1 to disable wrapping
  58     void Wrap(wxWindow *win, const wxString& text, int widthMax);
  59
  60     // we don't need it, but just to avoid compiler warnings
  61     virtual ~wxTextWrapper() { }
  62
  63 protected:
  64     // line may be empty
  65     virtual void OnOutputLine(const wxString& line) = 0;
  66
  67     // called at the start of every new line (except the very first one)
  68     virtual void OnNewLine() { }
  69
  70 private:
  71     // call OnOutputLine() and set m_eol to true
  72     void DoOutputLine(const wxString& line)
  73     {
  74         OnOutputLine(line);
  75
  76         m_eol = true;
  77     }
  78
  79     // this function is a destructive inspector: when it returns true it also
  80     // resets the flag to false so calling it again woulnd't return true any
  81     // more
  82     bool IsStartOfNewLine()
  83     {
  84         if ( !m_eol )
  85             return false;
  86
  87         m_eol = false;
  88
  89         return true;
  90     }
  91
  92
  93     bool m_eol;
  94 };
  95
  96 #endif // wxUSE_STATTEXT
  97
  98 // ----------------------------------------------------------------------------
  99 // wxDialogBase
 100 // ----------------------------------------------------------------------------
 101
 102 // FIXME - temporary hack in absence of wxTopLevelWindow, should be always used
 103 #ifdef wxTopLevelWindowNative
 104 BEGIN_EVENT_TABLE(wxDialogBase, wxTopLevelWindow)
 105     WX_EVENT_TABLE_CONTROL_CONTAINER(wxDialogBase)
 106 END_EVENT_TABLE()
 107
 108 WX_DELEGATE_TO_CONTROL_CONTAINER(wxDialogBase)
 109 #endif
 110
 111 void wxDialogBase::Init()
 112 {
 113     m_returnCode = 0;
 114     m_affirmativeId = wxID_OK;
 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 void
 266 #if defined(__WXGTK__) && !defined(__WXUNIVERSAL__)
 267 wxStaticText
 268 #else
 269 wxStaticTextBase
 270 #endif
 271 ::Wrap(int width)
 272 {
 273     wxLabelWrapper wrapper;
 274     wrapper.WrapLabel(this, width);
 275 }
 276
 277 #endif // wxUSE_STATTEXT
 278
 279 #if wxUSE_BUTTON
 280
 281 wxSizer *wxDialogBase::CreateButtonSizer( long flags )
 282 {
 283 #ifdef __SMARTPHONE__
 284     wxDialog* dialog = (wxDialog*) this;
 285     if (flags & wxOK){
 286         dialog->SetLeftMenu(wxID_OK);
 287     }
 288
 289     if (flags & wxCANCEL){
 290         dialog->SetRightMenu(wxID_CANCEL);
 291     }
 292
 293     if (flags & wxYES){
 294         dialog->SetLeftMenu(wxID_YES);
 295     }
 296
 297     if (flags & wxNO){
 298         dialog->SetLeftMenu(wxID_NO);
 299     }
 300     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 301     return sizer;
 302 #else
 303     return CreateStdDialogButtonSizer( flags );
 304 #endif
 305 }
 306
 307 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 308 {
 309     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 310     wxButton *ok = NULL;
 311     wxButton *yes = NULL;
 312     wxButton *no = NULL;
 313
 314     if (flags & wxOK){
 315         ok = new wxButton(this, wxID_OK);
 316         sizer->AddButton(ok);
 317     }
 318
 319     if (flags & wxCANCEL){
 320         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 321         sizer->AddButton(cancel);
 322     }
 323
 324     if (flags & wxYES){
 325         yes = new wxButton(this, wxID_YES);
 326         sizer->AddButton(yes);
 327     }
 328
 329     if (flags & wxNO){
 330         no = new wxButton(this, wxID_NO);
 331         sizer->AddButton(no);
 332     }
 333
 334     if (flags & wxHELP){
 335         wxButton *help = new wxButton(this, wxID_HELP);
 336         sizer->AddButton(help);
 337     }
 338
 339     if (flags & wxNO_DEFAULT)
 340     {
 341         if (no)
 342         {
 343             no->SetDefault();
 344             no->SetFocus();
 345         }
 346     }
 347     else
 348     {
 349         if (ok)
 350         {
 351             ok->SetDefault();
 352             ok->SetFocus();
 353         }
 354         else if (yes)
 355         {
 356             yes->SetDefault();
 357             yes->SetFocus();
 358         }
 359     }
 360
 361     if (flags & wxOK)
 362         SetAffirmativeId(wxID_OK);
 363     else if (flags & wxYES)
 364         SetAffirmativeId(wxID_YES);
 365
 366     sizer->Realize();
 367
 368     return sizer;
 369 }
 370
 371
 372 #endif // wxUSE_BUTTON