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     m_dialogStyle = style;
  75
  76     wxBeginBusyCursor();
  77
  78     wxLayoutConstraints *c;
  79     SetAutoLayout(TRUE);
  80
  81     // create an icon
  82     enum
  83     {
  84         Icon_Information,
  85         Icon_Question,
  86         Icon_Warning,
  87         Icon_Error
  88     } which;
  89
  90 #ifdef __WXMSW__
  91     static char *icons[] =
  92     {
  93         "wxICON_INFO",
  94         "wxICON_QUESTION",
  95         "wxICON_WARNING",
  96         "wxICON_ERROR",
  97     };
  98 #else // XPM icons
  99     static char **icons[] =
 100     {
 101         info,
 102         question,
 103         warning,
 104         error,
 105     };
 106 #endif // !XPM/XPM
 107
 108     if ( style & wxICON_EXCLAMATION )
 109         which = Icon_Warning;
 110     else if ( style & wxICON_HAND )
 111         which = Icon_Error;
 112     else if ( style & wxICON_QUESTION )
 113         which = Icon_Question;
 114     else
 115         which = Icon_Information;
 116
 117     wxStaticBitmap *icon = new wxStaticBitmap(this, -1, wxIcon(icons[which]));
 118     const int iconSize = icon->GetBitmap().GetWidth();
 119
 120     // split the message in lines
 121     // --------------------------
 122
 123     wxArrayString lines;
 124     wxSize sizeText = SplitTextMessage(message, &lines);
 125     long widthTextMax = sizeText.GetWidth(),
 126          heightTextMax = sizeText.GetHeight();
 127     size_t nLineCount = lines.GetCount();
 128
 129     // calculate the total dialog size
 130     enum
 131     {
 132         Btn_Ok,
 133         Btn_Yes,
 134         Btn_No,
 135         Btn_Cancel,
 136         Btn_Max
 137     };
 138     wxButton *buttons[Btn_Max] = { NULL, NULL, NULL, NULL };
 139     int nDefaultBtn = -1;
 140
 141     // some checks are in order...
 142     wxASSERT_MSG( !(style & wxOK) || !(style & wxYES_NO),
 143                   "don't create dialog with both Yes/No and Ok buttons!" );
 144
 145     wxASSERT_MSG( (style & wxOK ) || (style & wxYES_NO),
 146                   "don't create dialog with only the Cancel button!" );
 147
 148     if ( style & wxYES_NO ) {
 149        buttons[Btn_Yes] = new wxButton(this, wxID_YES, _("Yes"));
 150        buttons[Btn_No] = new wxButton(this, wxID_NO, _("No"));
 151
 152
 153        if(style & wxNO_DEFAULT)
 154           nDefaultBtn = Btn_No;
 155        else
 156           nDefaultBtn = Btn_Yes;
 157     }
 158
 159     if (style & wxOK) {
 160         buttons[Btn_Ok] = new wxButton(this, wxID_OK, _("OK"));
 161
 162         if ( nDefaultBtn == -1 )
 163             nDefaultBtn = Btn_Ok;
 164     }
 165
 166     if (style & wxCANCEL) {
 167         buttons[Btn_Cancel] = new wxButton(this, wxID_CANCEL, _("Cancel"));
 168     }
 169
 170     // get the longest caption and also calc the number of buttons
 171     size_t nBtn, nButtons = 0;
 172     long width, widthBtnMax = 0;
 173     for ( nBtn = 0; nBtn < Btn_Max; nBtn++ ) {
 174         if ( buttons[nBtn] ) {
 175             nButtons++;
 176             dc.GetTextExtent(buttons[nBtn]->GetLabel(), &width, NULL);
 177             if ( width > widthBtnMax )
 178                 widthBtnMax = width;
 179         }
 180     }
 181
 182     // now we can place the buttons
 183     if ( widthBtnMax < 75 )
 184         widthBtnMax = 75;
 185     else
 186         widthBtnMax += 10;
 187     long heightButton = widthBtnMax*23/75;
 188
 189     // *1.2 baselineskip
 190     heightTextMax *= 12;
 191     heightTextMax /= 10;
 192
 193     long widthButtonsTotal = nButtons * (widthBtnMax + LAYOUT_X_MARGIN) -
 194                              LAYOUT_X_MARGIN;
 195
 196     // the size of the dialog
 197     long widthDlg = wxMax(widthTextMax + iconSize + 4*LAYOUT_X_MARGIN,
 198                         wxMax(widthButtonsTotal, width)) +
 199                     2*LAYOUT_X_MARGIN,
 200          heightDlg = 8*LAYOUT_Y_MARGIN + heightButton +
 201                      heightTextMax*(nLineCount + 1);
 202
 203     // create the controls
 204     // -------------------
 205
 206     // the icon first
 207     c = new wxLayoutConstraints;
 208     c->width.Absolute(iconSize);
 209     c->height.Absolute(iconSize);
 210     c->top.SameAs(this, wxTop, 3*LAYOUT_Y_MARGIN);
 211     c->left.SameAs(this, wxLeft, 2*LAYOUT_X_MARGIN);
 212     icon->SetConstraints(c);
 213
 214     wxStaticText *text = NULL;
 215     for ( size_t nLine = 0; nLine < nLineCount; nLine++ ) {
 216         c = new wxLayoutConstraints;
 217         if ( text == NULL )
 218             c->top.SameAs(this, wxTop, 3*LAYOUT_Y_MARGIN);
 219         else
 220             c->top.Below(text);
 221
 222         c->left.RightOf(icon, 2*LAYOUT_X_MARGIN);
 223         c->width.Absolute(widthTextMax);
 224         c->height.Absolute(heightTextMax);
 225         text = new wxStaticText(this, -1, lines[nLine]);
 226         text->SetConstraints(c);
 227     }
 228
 229     // create the buttons
 230     wxButton *btnPrevious = (wxButton *)NULL;
 231     for ( nBtn = 0; nBtn < Btn_Max; nBtn++ ) {
 232         if ( buttons[nBtn] ) {
 233             c = new wxLayoutConstraints;
 234
 235             if ( btnPrevious ) {
 236                 c->left.RightOf(btnPrevious, LAYOUT_X_MARGIN);
 237             }
 238             else {
 239                 c->left.SameAs(this, wxLeft,
 240                                (widthDlg - widthButtonsTotal) / 2);
 241             }
 242
 243             c->width.Absolute(widthBtnMax);
 244             c->top.Below(text, 4*LAYOUT_Y_MARGIN);
 245             c->height.Absolute(heightButton);
 246             buttons[nBtn]->SetConstraints(c);
 247
 248             btnPrevious = buttons[nBtn];
 249         }
 250     }
 251
 252     // set default button
 253     // ------------------
 254
 255     if ( nDefaultBtn != -1 ) {
 256         buttons[nDefaultBtn]->SetDefault();
 257         buttons[nDefaultBtn]->SetFocus();
 258     }
 259     else {
 260         wxFAIL_MSG( "can't find default button for this dialog." );
 261     }
 262
 263     // position the controls and the dialog itself
 264     // -------------------------------------------
 265
 266     SetClientSize(widthDlg, heightDlg);
 267
 268     // SetSizeHints() wants the size of the whole dialog, not just client size
 269     wxSize sizeTotal = GetSize(),
 270            sizeClient = GetClientSize();
 271     SetSizeHints(widthDlg + sizeTotal.GetWidth() - sizeClient.GetWidth(),
 272                  heightDlg + sizeTotal.GetHeight() - sizeClient.GetHeight());
 273
 274     Layout();
 275
 276     Centre(wxCENTER_FRAME | wxBOTH);
 277
 278     wxEndBusyCursor();
 279 }
 280
 281 void wxGenericMessageDialog::OnYes(wxCommandEvent& WXUNUSED(event))
 282 {
 283     EndModal( wxID_YES );
 284 }
 285
 286 void wxGenericMessageDialog::OnNo(wxCommandEvent& WXUNUSED(event))
 287 {
 288     EndModal( wxID_NO );
 289 }
 290
 291 void wxGenericMessageDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 292 {
 293     /* Allow cancellation via ESC/Close button except if
 294        only YES and NO are specified. */
 295     if ( (m_dialogStyle & wxYES_NO) != wxYES_NO || (m_dialogStyle & wxCANCEL) )
 296     {
 297         EndModal( wxID_CANCEL );
 298     }
 299 }
 300
 301