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     m_escapeId = wxID_ANY;
 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 class wxTextSizerWrapper : public wxTextWrapper
 178 {
 179 public:
 180     wxTextSizerWrapper(wxWindow *win)
 181     {
 182         m_win = win;
 183         m_hLine = 0;
 184     }
 185
 186     wxSizer *CreateSizer(const wxString& text, int widthMax)
 187     {
 188         m_sizer = new wxBoxSizer(wxVERTICAL);
 189         Wrap(m_win, text, widthMax);
 190         return m_sizer;
 191     }
 192
 193 protected:
 194     virtual void OnOutputLine(const wxString& line)
 195     {
 196         if ( !line.empty() )
 197         {
 198             m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
 199         }
 200         else // empty line, no need to create a control for it
 201         {
 202             if ( !m_hLine )
 203                 m_hLine = m_win->GetCharHeight();
 204
 205             m_sizer->Add(5, m_hLine);
 206         }
 207     }
 208
 209 private:
 210     wxWindow *m_win;
 211     wxSizer *m_sizer;
 212     int m_hLine;
 213 };
 214
 215 wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
 216 {
 217     // I admit that this is complete bogus, but it makes
 218     // message boxes work for pda screens temporarily..
 219     int widthMax = -1;
 220     const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
 221     if (is_pda)
 222     {
 223         widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
 224     }
 225
 226     // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
 227     // the static messages created by CreateTextSizer() (used by wxMessageBox,
 228     // for example), we don't want this special meaning, so we need to quote it
 229     wxString text(message);
 230     text.Replace(_T("&"), _T("&&"));
 231
 232     wxTextSizerWrapper wrapper(this);
 233
 234     return wrapper.CreateSizer(text, widthMax);
 235 }
 236
 237 class wxLabelWrapper : public wxTextWrapper
 238 {
 239 public:
 240     void WrapLabel(wxWindow *text, int widthMax)
 241     {
 242         m_text.clear();
 243         Wrap(text, text->GetLabel(), widthMax);
 244         text->SetLabel(m_text);
 245     }
 246
 247 protected:
 248     virtual void OnOutputLine(const wxString& line)
 249     {
 250         m_text += line;
 251     }
 252
 253     virtual void OnNewLine()
 254     {
 255         m_text += _T('\n');
 256     }
 257
 258 private:
 259     wxString m_text;
 260 };
 261
 262 void
 263 #if defined(__WXGTK__) && !defined(__WXUNIVERSAL__)
 264 wxStaticText
 265 #else
 266 wxStaticTextBase
 267 #endif
 268 ::Wrap(int width)
 269 {
 270     wxLabelWrapper wrapper;
 271     wrapper.WrapLabel(this, width);
 272 }
 273
 274 #endif // wxUSE_STATTEXT
 275
 276 #if wxUSE_BUTTON
 277
 278 wxSizer *wxDialogBase::CreateButtonSizer( long flags )
 279 {
 280 #ifdef __SMARTPHONE__
 281     wxDialog* dialog = (wxDialog*) this;
 282     if (flags & wxOK){
 283         dialog->SetLeftMenu(wxID_OK);
 284     }
 285
 286     if (flags & wxCANCEL){
 287         dialog->SetRightMenu(wxID_CANCEL);
 288     }
 289
 290     if (flags & wxYES){
 291         dialog->SetLeftMenu(wxID_YES);
 292     }
 293
 294     if (flags & wxNO){
 295         dialog->SetLeftMenu(wxID_NO);
 296     }
 297     wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
 298     return sizer;
 299 #else
 300     return CreateStdDialogButtonSizer( flags );
 301 #endif
 302 }
 303
 304 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 305 {
 306     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 307     wxButton *ok = NULL;
 308     wxButton *yes = NULL;
 309     wxButton *no = NULL;
 310
 311     if (flags & wxOK){
 312         ok = new wxButton(this, wxID_OK);
 313         sizer->AddButton(ok);
 314     }
 315
 316     if (flags & wxCANCEL){
 317         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 318         sizer->AddButton(cancel);
 319     }
 320
 321     if (flags & wxYES){
 322         yes = new wxButton(this, wxID_YES);
 323         sizer->AddButton(yes);
 324     }
 325
 326     if (flags & wxNO){
 327         no = new wxButton(this, wxID_NO);
 328         sizer->AddButton(no);
 329     }
 330
 331     if (flags & wxHELP){
 332         wxButton *help = new wxButton(this, wxID_HELP);
 333         sizer->AddButton(help);
 334     }
 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     sizer->Realize();
 364
 365     return sizer;
 366 }
 367
 368
 369 #endif // wxUSE_BUTTON