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