src/generic/msgdlgg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msgdlgg.cpp
   3 // Purpose:     wxGenericMessageDialog
   4 // Author:      Julian Smart, Robert Roebling
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart, Markus Holzem, Robert Roebling
   9 // Licence:           wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "msgdlgg.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24   #include "wx/utils.h"
  25   #include "wx/dialog.h"
  26   #include "wx/button.h"
  27   #include "wx/stattext.h"
  28   #include "wx/statbmp.h"
  29   #include  "wx/layout.h"
  30   #include "wx/intl.h"
  31   #include "wx/dcclient.h"
  32   #include "wx/settings.h"
  33 #endif
  34
  35 #include <stdio.h>
  36 #include <string.h>
  37
  38 #include "wx/generic/msgdlgg.h"
  39
  40 #if wxUSE_STATLINE
  41   #include "wx/statline.h"
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // icons
  46 // ----------------------------------------------------------------------------
  47
  48 // MSW icons are in the ressources, for all other platforms - in XPM files
  49 #ifndef __WXMSW__
  50     #include "wx/generic/info.xpm"
  51     #include "wx/generic/question.xpm"
  52     #include "wx/generic/warning.xpm"
  53     #include "wx/generic/error.xpm"
  54 #endif // __WXMSW__
  55
  56
  57 #if !USE_SHARED_LIBRARY
  58 BEGIN_EVENT_TABLE(wxGenericMessageDialog, wxDialog)
  59         EVT_BUTTON(wxID_YES, wxGenericMessageDialog::OnYes)
  60         EVT_BUTTON(wxID_NO, wxGenericMessageDialog::OnNo)
  61         EVT_BUTTON(wxID_CANCEL, wxGenericMessageDialog::OnCancel)
  62 END_EVENT_TABLE()
  63
  64 IMPLEMENT_CLASS(wxGenericMessageDialog, wxDialog)
  65 #endif
  66
  67 wxGenericMessageDialog::wxGenericMessageDialog( wxWindow *parent,
  68                                                 const wxString& message,
  69                                                 const wxString& caption,
  70                                                 long style,
  71                                                 const wxPoint& pos)
  72                       : wxDialog( parent, -1, caption, pos, wxDefaultSize, wxDEFAULT_DIALOG_STYLE )
  73 {
  74     static const int LAYOUT_X_MARGIN = 5;
  75     static const int LAYOUT_Y_MARGIN = 5;
  76
  77     m_dialogStyle = style;
  78
  79     wxBeginBusyCursor();
  80
  81     wxLayoutConstraints *c;
  82     SetAutoLayout(TRUE);
  83
  84     // create an icon
  85     enum
  86     {
  87         Icon_Information,
  88         Icon_Question,
  89         Icon_Warning,
  90         Icon_Error
  91     } which;
  92
  93 #ifdef __WXMSW__
  94     static char *icons[] =
  95     {
  96         "wxICON_INFO",
  97         "wxICON_QUESTION",
  98         "wxICON_WARNING",
  99         "wxICON_ERROR",
 100     };
 101 #else // XPM icons
 102     static char **icons[] =
 103     {
 104         info,
 105         question,
 106         warning,
 107         error,
 108     };
 109 #endif // !XPM/XPM
 110
 111     if ( style & wxICON_EXCLAMATION )
 112         which = Icon_Warning;
 113     else if ( style & wxICON_HAND )
 114         which = Icon_Error;
 115     else if ( style & wxICON_QUESTION )
 116         which = Icon_Question;
 117     else
 118         which = Icon_Information;
 119
 120     wxStaticBitmap *icon = new wxStaticBitmap(this, -1, wxIcon(icons[which]));
 121     const int iconSize = icon->GetBitmap().GetWidth();
 122
 123     // split the message in lines
 124     // --------------------------
 125     wxClientDC dc(this);
 126     dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 127
 128     wxArrayString lines;
 129     wxString curLine;
 130     long height, width, heightTextMax = 0, widthTextMax = 0;
 131     for ( const char *pc = message; ; pc++ ) {
 132         if ( *pc == '\n' || *pc == '\0' ) {
 133             dc.GetTextExtent(curLine, &width, &height);
 134             if ( width > widthTextMax )
 135                 widthTextMax = width;
 136             if ( height > heightTextMax )
 137                 heightTextMax = height;
 138
 139             lines.Add(curLine);
 140
 141             if ( *pc == '\n' ) {
 142                curLine.Empty();
 143             }
 144             else {
 145                // the end of string
 146                break;
 147             }
 148         }
 149         else {
 150             curLine += *pc;
 151         }
 152     }
 153
 154     // calculate the total dialog size
 155     enum
 156     {
 157         Btn_Ok,
 158         Btn_Yes,
 159         Btn_No,
 160         Btn_Cancel,
 161         Btn_Max
 162     };
 163     wxButton *buttons[Btn_Max] = { NULL, NULL, NULL, NULL };
 164     int nDefaultBtn = -1;
 165
 166     // some checks are in order...
 167     wxASSERT_MSG( !(style & wxOK) || !(style & wxYES_NO),
 168                   "don't create dialog with both Yes/No and Ok buttons!" );
 169
 170     wxASSERT_MSG( (style & wxOK ) || (style & wxYES_NO),
 171                   "don't create dialog with only the Cancel button!" );
 172
 173     if ( style & wxYES_NO ) {
 174        buttons[Btn_Yes] = new wxButton(this, wxID_YES, _("Yes"));
 175        buttons[Btn_No] = new wxButton(this, wxID_NO, _("No"));
 176
 177
 178        if(style & wxNO_DEFAULT)
 179           nDefaultBtn = Btn_No;
 180        else
 181           nDefaultBtn = Btn_Yes;
 182     }
 183
 184     if (style & wxOK) {
 185         buttons[Btn_Ok] = new wxButton(this, wxID_OK, _("OK"));
 186
 187         if ( nDefaultBtn == -1 )
 188             nDefaultBtn = Btn_Ok;
 189     }
 190
 191     if (style & wxCANCEL) {
 192         buttons[Btn_Cancel] = new wxButton(this, wxID_CANCEL, _("Cancel"));
 193     }
 194
 195     // get the longest caption and also calc the number of buttons
 196     size_t nBtn, nButtons = 0;
 197     long widthBtnMax = 0;
 198     for ( nBtn = 0; nBtn < Btn_Max; nBtn++ ) {
 199         if ( buttons[nBtn] ) {
 200             nButtons++;
 201             dc.GetTextExtent(buttons[nBtn]->GetLabel(), &width, NULL);
 202             if ( width > widthBtnMax )
 203                 widthBtnMax = width;
 204         }
 205     }
 206
 207     // now we can place the buttons
 208     if ( widthBtnMax < 75 )
 209         widthBtnMax = 75;
 210     else
 211         widthBtnMax += 10;
 212     long heightButton = widthBtnMax*23/75;
 213
 214     // *1.2 baselineskip
 215     heightTextMax *= 12;
 216     heightTextMax /= 10;
 217
 218     size_t nLineCount = lines.Count();
 219
 220     long widthButtonsTotal = nButtons * (widthBtnMax + LAYOUT_X_MARGIN) -
 221                              LAYOUT_X_MARGIN;
 222
 223     // the size of the dialog
 224     long widthDlg = wxMax(widthTextMax + iconSize + 4*LAYOUT_X_MARGIN,
 225                         wxMax(widthButtonsTotal, width)) +
 226                     2*LAYOUT_X_MARGIN,
 227          heightDlg = 8*LAYOUT_Y_MARGIN + heightButton +
 228                      heightTextMax*(nLineCount + 1);
 229
 230     // create the controls
 231     // -------------------
 232
 233     // the icon first
 234     c = new wxLayoutConstraints;
 235     c->width.Absolute(iconSize);
 236     c->height.Absolute(iconSize);
 237     c->top.SameAs(this, wxTop, 3*LAYOUT_Y_MARGIN);
 238     c->left.SameAs(this, wxLeft, 2*LAYOUT_X_MARGIN);
 239     icon->SetConstraints(c);
 240
 241     wxStaticText *text = NULL;
 242     for ( size_t nLine = 0; nLine < nLineCount; nLine++ ) {
 243         c = new wxLayoutConstraints;
 244         if ( text == NULL )
 245             c->top.SameAs(this, wxTop, 3*LAYOUT_Y_MARGIN);
 246         else
 247             c->top.Below(text);
 248
 249         c->left.RightOf(icon, 2*LAYOUT_X_MARGIN);
 250         c->width.Absolute(widthTextMax);
 251         c->height.Absolute(heightTextMax);
 252         text = new wxStaticText(this, -1, lines[nLine]);
 253         text->SetConstraints(c);
 254     }
 255
 256     // create the buttons
 257     wxButton *btnPrevious = (wxButton *)NULL;
 258     for ( nBtn = 0; nBtn < Btn_Max; nBtn++ ) {
 259         if ( buttons[nBtn] ) {
 260             c = new wxLayoutConstraints;
 261
 262             if ( btnPrevious ) {
 263                 c->left.RightOf(btnPrevious, LAYOUT_X_MARGIN);
 264             }
 265             else {
 266                 c->left.SameAs(this, wxLeft,
 267                                (widthDlg - widthButtonsTotal) / 2);
 268             }
 269
 270             c->width.Absolute(widthBtnMax);
 271             c->top.Below(text, 4*LAYOUT_Y_MARGIN);
 272             c->height.Absolute(heightButton);
 273             buttons[nBtn]->SetConstraints(c);
 274
 275             btnPrevious = buttons[nBtn];
 276         }
 277     }
 278
 279     // set default button
 280     // ------------------
 281
 282     if ( nDefaultBtn != -1 ) {
 283         buttons[nDefaultBtn]->SetDefault();
 284         buttons[nDefaultBtn]->SetFocus();
 285     }
 286     else {
 287         wxFAIL_MSG( "can't find default button for this dialog." );
 288     }
 289
 290     // position the controls and the dialog itself
 291     // -------------------------------------------
 292
 293     SetClientSize(widthDlg, heightDlg);
 294
 295     // SetSizeHints() wants the size of the whole dialog, not just client size
 296     wxSize sizeTotal = GetSize(),
 297            sizeClient = GetClientSize();
 298     SetSizeHints(widthDlg + sizeTotal.GetWidth() - sizeClient.GetWidth(),
 299                  heightDlg + sizeTotal.GetHeight() - sizeClient.GetHeight());
 300
 301     Layout();
 302
 303     Centre(wxCENTER_FRAME | wxBOTH);
 304
 305     wxEndBusyCursor();
 306 }
 307
 308 void wxGenericMessageDialog::OnYes(wxCommandEvent& WXUNUSED(event))
 309 {
 310     EndModal( wxID_YES );
 311 }
 312
 313 void wxGenericMessageDialog::OnNo(wxCommandEvent& WXUNUSED(event))
 314 {
 315     EndModal( wxID_NO );
 316 }
 317
 318 void wxGenericMessageDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 319 {
 320     /* Allow cancellation via ESC/Close button except if
 321        only YES and NO are specified. */
 322     if ( (m_dialogStyle & wxYES_NO) != wxYES_NO || (m_dialogStyle & wxCANCEL) )
 323     {
 324         EndModal( wxID_CANCEL );
 325     }
 326 }
 327
 328