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 protected:
  61     // line may be empty
  62     virtual void OnOutputLine(const wxString& line) = 0;
  63
  64     // called at the start of every new line (except the very first one)
  65     virtual void OnNewLine() { }
  66
  67 private:
  68     // call OnOutputLine() and set m_eol to true
  69     void DoOutputLine(const wxString& line)
  70     {
  71         OnOutputLine(line);
  72
  73         m_eol = true;
  74     }
  75
  76     // this function is a destructive inspector: when it returns true it also
  77     // resets the flag to false so calling it again woulnd't return true any
  78     // more
  79     bool IsStartOfNewLine()
  80     {
  81         if ( !m_eol )
  82             return false;
  83
  84         m_eol = false;
  85
  86         return true;
  87     }
  88
  89
  90     bool m_eol;
  91 };
  92
  93 #endif // wxUSE_STATTEXT
  94
  95 // ----------------------------------------------------------------------------
  96 // wxDialogBase
  97 // ----------------------------------------------------------------------------
  98
  99 // FIXME - temporary hack in absence of wxTopLevelWindow, should be always used
 100 #ifdef wxTopLevelWindowNative
 101 BEGIN_EVENT_TABLE(wxDialogBase, wxTopLevelWindow)
 102     WX_EVENT_TABLE_CONTROL_CONTAINER(wxDialogBase)
 103 END_EVENT_TABLE()
 104
 105 WX_DELEGATE_TO_CONTROL_CONTAINER(wxDialogBase)
 106 #endif
 107
 108 void wxDialogBase::Init()
 109 {
 110     m_returnCode = 0;
 111     m_affirmativeId = wxID_OK;
 112
 113     // the dialogs have this flag on by default to prevent the events from the
 114     // dialog controls from reaching the parent frame which is usually
 115     // undesirable and can lead to unexpected and hard to find bugs
 116     SetExtraStyle(GetExtraStyle() | wxWS_EX_BLOCK_EVENTS);
 117
 118 #ifdef wxTopLevelWindowNative // FIXME - temporary hack, should be always used!
 119     m_container.SetContainerWindow(this);
 120 #endif
 121 }
 122
 123 #if wxUSE_STATTEXT
 124
 125 void wxTextWrapper::Wrap(wxWindow *win, const wxString& text, int widthMax)
 126 {
 127     const wxChar *lastSpace = NULL;
 128     wxString line;
 129
 130     const wxChar *lineStart = text.c_str();
 131     for ( const wxChar *p = lineStart; ; p++ )
 132     {
 133         if ( IsStartOfNewLine() )
 134         {
 135             OnNewLine();
 136
 137             lastSpace = NULL;
 138             line.clear();
 139             lineStart = p;
 140         }
 141
 142         if ( *p == _T('\n') || *p == _T('\0') )
 143         {
 144             DoOutputLine(line);
 145
 146             if ( *p == _T('\0') )
 147                 break;
 148         }
 149         else // not EOL
 150         {
 151             if ( *p == _T(' ') )
 152                 lastSpace = p;
 153
 154             line += *p;
 155
 156             if ( widthMax >= 0 && lastSpace )
 157             {
 158                 int width;
 159                 win->GetTextExtent(line, &width, NULL);
 160
 161                 if ( width > widthMax )
 162                 {
 163                     // remove the last word from this line
 164                     line.erase(lastSpace - lineStart, p + 1 - lineStart);
 165                     DoOutputLine(line);
 166
 167                     // go back to the last word of this line which we didn't
 168                     // output yet
 169                     p = lastSpace;
 170                 }
 171             }
 172             //else: no wrapping at all or impossible to wrap
 173         }
 174     }
 175 }
 176
 177 wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
 178 {
 179     // I admit that this is complete bogus, but it makes
 180     // message boxes work for pda screens temporarily..
 181     int widthMax = -1;
 182     const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
 183     if (is_pda)
 184     {
 185         widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
 186     }
 187
 188     // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
 189     // the static messages created by CreateTextSizer() (used by wxMessageBox,
 190     // for example), we don't want this special meaning, so we need to quote it
 191     wxString text(message);
 192     text.Replace(_T("&"), _T("&&"));
 193
 194
 195     class TextSizerWrapper : public wxTextWrapper
 196     {
 197     public:
 198         TextSizerWrapper(wxWindow *win)
 199         {
 200             m_win = win;
 201             m_hLine = 0;
 202         }
 203
 204         wxSizer *CreateSizer(const wxString& text, int widthMax)
 205         {
 206             m_sizer = new wxBoxSizer(wxVERTICAL);
 207             Wrap(m_win, text, widthMax);
 208             return m_sizer;
 209         }
 210
 211     protected:
 212         virtual void OnOutputLine(const wxString& line)
 213         {
 214             if ( !line.empty() )
 215             {
 216                 m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
 217             }
 218             else // empty line, no need to create a control for it
 219             {
 220                 if ( !m_hLine )
 221                     m_hLine = m_win->GetCharHeight();
 222
 223                 m_sizer->Add(5, m_hLine);
 224             }
 225         }
 226
 227     private:
 228         wxWindow *m_win;
 229         wxSizer *m_sizer;
 230         int m_hLine;
 231     };
 232
 233     TextSizerWrapper wrapper(this);
 234
 235     return wrapper.CreateSizer(text, widthMax);
 236 }
 237
 238 void wxStaticTextBase::Wrap(int width)
 239 {
 240     class LabelWrapper : public wxTextWrapper
 241     {
 242     public:
 243         void WrapLabel(wxStaticTextBase *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     LabelWrapper wrapper;
 266     wrapper.WrapLabel(this, width);
 267 }
 268
 269 #endif // wxUSE_STATTEXT
 270
 271 #if wxUSE_BUTTON
 272
 273 wxSizer *wxDialogBase::CreateButtonSizer( long flags )
 274 {
 275 #ifdef __SMARTPHONE__
 276     wxDialog* dialog = (wxDialog*) this;
 277     if (flags & wxOK){
 278         dialog->SetLeftMenu(wxID_OK);
 279     }
 280
 281     if (flags & wxCANCEL){
 282         dialog->SetRightMenu(wxID_CANCEL);
 283     }
 284
 285     if (flags & wxYES){
 286         dialog->SetLeftMenu(wxID_YES);
 287     }
 288
 289     if (flags & wxNO){
 290         dialog->SetLeftMenu(wxID_NO);
 291     }
 292     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 293     return sizer;
 294 #else
 295     return CreateStdDialogButtonSizer( flags );
 296 #endif
 297 }
 298
 299 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 300 {
 301     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 302     wxButton *ok = NULL;
 303     wxButton *yes = NULL;
 304     wxButton *no = NULL;
 305
 306     if (flags & wxOK){
 307         ok = new wxButton(this, wxID_OK);
 308         sizer->AddButton(ok);
 309     }
 310
 311     if (flags & wxCANCEL){
 312         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 313         sizer->AddButton(cancel);
 314     }
 315
 316     if (flags & wxYES){
 317         yes = new wxButton(this, wxID_YES);
 318         sizer->AddButton(yes);
 319     }
 320
 321     if (flags & wxNO){
 322         no = new wxButton(this, wxID_NO);
 323         sizer->AddButton(no);
 324     }
 325
 326     if (flags & wxHELP){
 327         wxButton *help = new wxButton(this, wxID_HELP);
 328         sizer->AddButton(help);
 329     }
 330
 331     sizer->Realize();
 332
 333     if (flags & wxNO_DEFAULT)
 334     {
 335         if (no)
 336         {
 337             no->SetDefault();
 338             no->SetFocus();
 339         }
 340     }
 341     else
 342     {
 343         if (ok)
 344         {
 345             ok->SetDefault();
 346             ok->SetFocus();
 347         }
 348         else if (yes)
 349         {
 350             yes->SetDefault();
 351             yes->SetFocus();
 352         }
 353     }
 354
 355     if (flags & wxOK)
 356         SetAffirmativeId(wxID_OK);
 357     else if (flags & wxYES)
 358         SetAffirmativeId(wxID_YES);
 359
 360     return sizer;
 361 }
 362
 363
 364 #endif // wxUSE_BUTTON