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