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