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 wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
 181 {
 182     // I admit that this is complete bogus, but it makes
 183     // message boxes work for pda screens temporarily..
 184     int widthMax = -1;
 185     const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
 186     if (is_pda)
 187     {
 188         widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
 189     }
 190
 191     // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
 192     // the static messages created by CreateTextSizer() (used by wxMessageBox,
 193     // for example), we don't want this special meaning, so we need to quote it
 194     wxString text(message);
 195     text.Replace(_T("&"), _T("&&"));
 196
 197
 198     class TextSizerWrapper : public wxTextWrapper
 199     {
 200     public:
 201         TextSizerWrapper(wxWindow *win)
 202         {
 203             m_win = win;
 204             m_hLine = 0;
 205         }
 206
 207         wxSizer *CreateSizer(const wxString& text, int widthMax)
 208         {
 209             m_sizer = new wxBoxSizer(wxVERTICAL);
 210             Wrap(m_win, text, widthMax);
 211             return m_sizer;
 212         }
 213
 214     protected:
 215         virtual void OnOutputLine(const wxString& line)
 216         {
 217             if ( !line.empty() )
 218             {
 219                 m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
 220             }
 221             else // empty line, no need to create a control for it
 222             {
 223                 if ( !m_hLine )
 224                     m_hLine = m_win->GetCharHeight();
 225
 226                 m_sizer->Add(5, m_hLine);
 227             }
 228         }
 229
 230     private:
 231         wxWindow *m_win;
 232         wxSizer *m_sizer;
 233         int m_hLine;
 234     };
 235
 236     TextSizerWrapper wrapper(this);
 237
 238     return wrapper.CreateSizer(text, widthMax);
 239 }
 240
 241 void wxStaticTextBase::Wrap(int width)
 242 {
 243     class LabelWrapper : public wxTextWrapper
 244     {
 245     public:
 246         void WrapLabel(wxStaticTextBase *text, int widthMax)
 247         {
 248             m_text.clear();
 249             Wrap(text, text->GetLabel(), widthMax);
 250             text->SetLabel(m_text);
 251         }
 252
 253     protected:
 254         virtual void OnOutputLine(const wxString& line)
 255         {
 256             m_text += line;
 257         }
 258
 259         virtual void OnNewLine()
 260         {
 261             m_text += _T('\n');
 262         }
 263
 264     private:
 265         wxString m_text;
 266     };
 267
 268     LabelWrapper wrapper;
 269     wrapper.WrapLabel(this, width);
 270 }
 271
 272 #endif // wxUSE_STATTEXT
 273
 274 #if wxUSE_BUTTON
 275
 276 wxSizer *wxDialogBase::CreateButtonSizer( long flags )
 277 {
 278 #ifdef __SMARTPHONE__
 279     wxDialog* dialog = (wxDialog*) this;
 280     if (flags & wxOK){
 281         dialog->SetLeftMenu(wxID_OK);
 282     }
 283
 284     if (flags & wxCANCEL){
 285         dialog->SetRightMenu(wxID_CANCEL);
 286     }
 287
 288     if (flags & wxYES){
 289         dialog->SetLeftMenu(wxID_YES);
 290     }
 291
 292     if (flags & wxNO){
 293         dialog->SetLeftMenu(wxID_NO);
 294     }
 295     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 296     return sizer;
 297 #else
 298     return CreateStdDialogButtonSizer( flags );
 299 #endif
 300 }
 301
 302 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 303 {
 304     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 305     wxButton *ok = NULL;
 306     wxButton *yes = NULL;
 307     wxButton *no = NULL;
 308
 309     if (flags & wxOK){
 310         ok = new wxButton(this, wxID_OK);
 311         sizer->AddButton(ok);
 312     }
 313
 314     if (flags & wxCANCEL){
 315         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 316         sizer->AddButton(cancel);
 317     }
 318
 319     if (flags & wxYES){
 320         yes = new wxButton(this, wxID_YES);
 321         sizer->AddButton(yes);
 322     }
 323
 324     if (flags & wxNO){
 325         no = new wxButton(this, wxID_NO);
 326         sizer->AddButton(no);
 327     }
 328
 329     if (flags & wxHELP){
 330         wxButton *help = new wxButton(this, wxID_HELP);
 331         sizer->AddButton(help);
 332     }
 333
 334     sizer->Realize();
 335
 336     if (flags & wxNO_DEFAULT)
 337     {
 338         if (no)
 339         {
 340             no->SetDefault();
 341             no->SetFocus();
 342         }
 343     }
 344     else
 345     {
 346         if (ok)
 347         {
 348             ok->SetDefault();
 349             ok->SetFocus();
 350         }
 351         else if (yes)
 352         {
 353             yes->SetDefault();
 354             yes->SetFocus();
 355         }
 356     }
 357
 358     if (flags & wxOK)
 359         SetAffirmativeId(wxID_OK);
 360     else if (flags & wxYES)
 361         SetAffirmativeId(wxID_YES);
 362
 363     return sizer;
 364 }
 365
 366
 367 #endif // wxUSE_BUTTON