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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/button.h"
  29     #include "wx/dialog.h"
  30     #include "wx/dcclient.h"
  31     #include "wx/intl.h"
  32     #include "wx/settings.h"
  33     #include "wx/stattext.h"
  34     #include "wx/sizer.h"
  35     #include "wx/button.h"
  36     #include "wx/containr.h"
  37 #endif
  38
  39 #if wxUSE_STATTEXT
  40
  41 // ----------------------------------------------------------------------------
  42 // wxTextWrapper
  43 // ----------------------------------------------------------------------------
  44
  45 // this class is used to wrap the text on word boundary: wrapping is done by
  46 // calling OnStartLine() and OnOutputLine() functions
  47 class wxTextWrapper
  48 {
  49 public:
  50     wxTextWrapper() { m_eol = false; }
  51
  52     // win is used for getting the font, text is the text to wrap, width is the
  53     // max line width or -1 to disable wrapping
  54     void Wrap(wxWindow *win, const wxString& text, int widthMax);
  55
  56     // we don't need it, but just to avoid compiler warnings
  57     virtual ~wxTextWrapper() { }
  58
  59 protected:
  60     // line may be empty
  61     virtual void OnOutputLine(const wxString& line) = 0;
  62
  63     // called at the start of every new line (except the very first one)
  64     virtual void OnNewLine() { }
  65
  66 private:
  67     // call OnOutputLine() and set m_eol to true
  68     void DoOutputLine(const wxString& line)
  69     {
  70         OnOutputLine(line);
  71
  72         m_eol = true;
  73     }
  74
  75     // this function is a destructive inspector: when it returns true it also
  76     // resets the flag to false so calling it again woulnd't return true any
  77     // more
  78     bool IsStartOfNewLine()
  79     {
  80         if ( !m_eol )
  81             return false;
  82
  83         m_eol = false;
  84
  85         return true;
  86     }
  87
  88
  89     bool m_eol;
  90 };
  91
  92 #endif // wxUSE_STATTEXT
  93
  94 // ----------------------------------------------------------------------------
  95 // wxDialogBase
  96 // ----------------------------------------------------------------------------
  97
  98 // FIXME - temporary hack in absence of wxTopLevelWindow, should be always used
  99 #ifdef wxTopLevelWindowNative
 100 BEGIN_EVENT_TABLE(wxDialogBase, wxTopLevelWindow)
 101     WX_EVENT_TABLE_CONTROL_CONTAINER(wxDialogBase)
 102 END_EVENT_TABLE()
 103
 104 WX_DELEGATE_TO_CONTROL_CONTAINER(wxDialogBase)
 105 #endif
 106
 107 void wxDialogBase::Init()
 108 {
 109     m_returnCode = 0;
 110     m_affirmativeId = wxID_OK;
 111
 112     // the dialogs have this flag on by default to prevent the events from the
 113     // dialog controls from reaching the parent frame which is usually
 114     // undesirable and can lead to unexpected and hard to find bugs
 115     SetExtraStyle(GetExtraStyle() | wxWS_EX_BLOCK_EVENTS);
 116
 117 #ifdef wxTopLevelWindowNative // FIXME - temporary hack, should be always used!
 118     m_container.SetContainerWindow(this);
 119 #endif
 120 }
 121
 122 #if wxUSE_STATTEXT
 123
 124 void wxTextWrapper::Wrap(wxWindow *win, const wxString& text, int widthMax)
 125 {
 126     const wxChar *lastSpace = NULL;
 127     wxString line;
 128
 129     const wxChar *lineStart = text.c_str();
 130     for ( const wxChar *p = lineStart; ; p++ )
 131     {
 132         if ( IsStartOfNewLine() )
 133         {
 134             OnNewLine();
 135
 136             lastSpace = NULL;
 137             line.clear();
 138             lineStart = p;
 139         }
 140
 141         if ( *p == _T('\n') || *p == _T('\0') )
 142         {
 143             DoOutputLine(line);
 144
 145             if ( *p == _T('\0') )
 146                 break;
 147         }
 148         else // not EOL
 149         {
 150             if ( *p == _T(' ') )
 151                 lastSpace = p;
 152
 153             line += *p;
 154
 155             if ( widthMax >= 0 && lastSpace )
 156             {
 157                 int width;
 158                 win->GetTextExtent(line, &width, NULL);
 159
 160                 if ( width > widthMax )
 161                 {
 162                     // remove the last word from this line
 163                     line.erase(lastSpace - lineStart, p + 1 - lineStart);
 164                     DoOutputLine(line);
 165
 166                     // go back to the last word of this line which we didn't
 167                     // output yet
 168                     p = lastSpace;
 169                 }
 170             }
 171             //else: no wrapping at all or impossible to wrap
 172         }
 173     }
 174 }
 175
 176 class wxTextSizerWrapper : public wxTextWrapper
 177 {
 178 public:
 179     wxTextSizerWrapper(wxWindow *win)
 180     {
 181         m_win = win;
 182         m_hLine = 0;
 183     }
 184
 185     wxSizer *CreateSizer(const wxString& text, int widthMax)
 186     {
 187         m_sizer = new wxBoxSizer(wxVERTICAL);
 188         Wrap(m_win, text, widthMax);
 189         return m_sizer;
 190     }
 191
 192 protected:
 193     virtual void OnOutputLine(const wxString& line)
 194     {
 195         if ( !line.empty() )
 196         {
 197             m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
 198         }
 199         else // empty line, no need to create a control for it
 200         {
 201             if ( !m_hLine )
 202                 m_hLine = m_win->GetCharHeight();
 203
 204             m_sizer->Add(5, m_hLine);
 205         }
 206     }
 207
 208 private:
 209     wxWindow *m_win;
 210     wxSizer *m_sizer;
 211     int m_hLine;
 212 };
 213
 214 wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
 215 {
 216     // I admit that this is complete bogus, but it makes
 217     // message boxes work for pda screens temporarily..
 218     int widthMax = -1;
 219     const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
 220     if (is_pda)
 221     {
 222         widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
 223     }
 224
 225     // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
 226     // the static messages created by CreateTextSizer() (used by wxMessageBox,
 227     // for example), we don't want this special meaning, so we need to quote it
 228     wxString text(message);
 229     text.Replace(_T("&"), _T("&&"));
 230
 231     wxTextSizerWrapper wrapper(this);
 232
 233     return wrapper.CreateSizer(text, widthMax);
 234 }
 235
 236 class wxLabelWrapper : public wxTextWrapper
 237 {
 238 public:
 239     void WrapLabel(wxWindow *text, int widthMax)
 240     {
 241         m_text.clear();
 242         Wrap(text, text->GetLabel(), widthMax);
 243         text->SetLabel(m_text);
 244     }
 245
 246 protected:
 247     virtual void OnOutputLine(const wxString& line)
 248     {
 249         m_text += line;
 250     }
 251
 252     virtual void OnNewLine()
 253     {
 254         m_text += _T('\n');
 255     }
 256
 257 private:
 258     wxString m_text;
 259 };
 260
 261 void
 262 #if defined(__WXGTK__) && !defined(__WXUNIVERSAL__)
 263 wxStaticText
 264 #else
 265 wxStaticTextBase
 266 #endif
 267 ::Wrap(int width)
 268 {
 269     wxLabelWrapper wrapper;
 270     wrapper.WrapLabel(this, width);
 271 }
 272
 273 #endif // wxUSE_STATTEXT
 274
 275 #if wxUSE_BUTTON
 276
 277 wxSizer *wxDialogBase::CreateButtonSizer( long flags )
 278 {
 279 #ifdef __SMARTPHONE__
 280     wxDialog* dialog = (wxDialog*) this;
 281     if (flags & wxOK){
 282         dialog->SetLeftMenu(wxID_OK);
 283     }
 284
 285     if (flags & wxCANCEL){
 286         dialog->SetRightMenu(wxID_CANCEL);
 287     }
 288
 289     if (flags & wxYES){
 290         dialog->SetLeftMenu(wxID_YES);
 291     }
 292
 293     if (flags & wxNO){
 294         dialog->SetLeftMenu(wxID_NO);
 295     }
 296     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 297     return sizer;
 298 #else
 299     return CreateStdDialogButtonSizer( flags );
 300 #endif
 301 }
 302
 303 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 304 {
 305     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 306     wxButton *ok = NULL;
 307     wxButton *yes = NULL;
 308     wxButton *no = NULL;
 309
 310     if (flags & wxOK){
 311         ok = new wxButton(this, wxID_OK);
 312         sizer->AddButton(ok);
 313     }
 314
 315     if (flags & wxCANCEL){
 316         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 317         sizer->AddButton(cancel);
 318     }
 319
 320     if (flags & wxYES){
 321         yes = new wxButton(this, wxID_YES);
 322         sizer->AddButton(yes);
 323     }
 324
 325     if (flags & wxNO){
 326         no = new wxButton(this, wxID_NO);
 327         sizer->AddButton(no);
 328     }
 329
 330     if (flags & wxHELP){
 331         wxButton *help = new wxButton(this, wxID_HELP);
 332         sizer->AddButton(help);
 333     }
 334
 335     if (flags & wxNO_DEFAULT)
 336     {
 337         if (no)
 338         {
 339             no->SetDefault();
 340             no->SetFocus();
 341         }
 342     }
 343     else
 344     {
 345         if (ok)
 346         {
 347             ok->SetDefault();
 348             ok->SetFocus();
 349         }
 350         else if (yes)
 351         {
 352             yes->SetDefault();
 353             yes->SetFocus();
 354         }
 355     }
 356
 357     if (flags & wxOK)
 358         SetAffirmativeId(wxID_OK);
 359     else if (flags & wxYES)
 360         SetAffirmativeId(wxID_YES);
 361
 362     sizer->Realize();
 363
 364     return sizer;
 365 }
 366
 367
 368 #endif // wxUSE_BUTTON