src/generic/tipdlg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tipdlg.cpp
   3 // Purpose:     implementation of wxTipDialog
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.06.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "tipdlg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_STARTUP_TIPS
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/button.h"
  35     #include "wx/checkbox.h"
  36     #include "wx/statbox.h"
  37     #include "wx/dialog.h"
  38     #include "wx/icon.h"
  39     #include "wx/intl.h"
  40     #include "wx/textctrl.h"
  41     #include "wx/statbmp.h"
  42     #include "wx/stattext.h"
  43     #include "wx/sizer.h"
  44 #endif // WX_PRECOMP
  45
  46 #include "wx/statline.h"
  47 #include "wx/artprov.h"
  48 #include "wx/settings.h"
  49
  50 #include "wx/tipdlg.h"
  51
  52 // ----------------------------------------------------------------------------
  53 // constants
  54 // ----------------------------------------------------------------------------
  55
  56 static const int wxID_NEXT_TIP = 32000;  // whatever
  57
  58 // ---------------------------------------------------------------------------
  59 // macros
  60 // ---------------------------------------------------------------------------
  61
  62 /* Macro for avoiding #ifdefs when value have to be different depending on size of
  63    device we display on - take it from something like wxDesktopPolicy in the future
  64  */
  65
  66 #if defined(__SMARTPHONE__)
  67     #define wxLARGESMALL(large,small) small
  68 #else
  69     #define wxLARGESMALL(large,small) large
  70 #endif
  71
  72 // ----------------------------------------------------------------------------
  73 // private classes
  74 // ----------------------------------------------------------------------------
  75
  76 // an implementation which takes the tips from the text file - each line
  77 // represents a tip
  78 class WXDLLIMPEXP_ADV wxFileTipProvider : public wxTipProvider
  79 {
  80 public:
  81     wxFileTipProvider(const wxString& filename, size_t currentTip);
  82
  83     virtual wxString GetTip();
  84
  85 private:
  86     wxTextFile m_textfile;
  87
  88     DECLARE_NO_COPY_CLASS(wxFileTipProvider)
  89 };
  90
  91 #ifdef __WIN32__
  92 // TODO an implementation which takes the tips from the given registry key
  93 class WXDLLIMPEXP_ADV wxRegTipProvider : public wxTipProvider
  94 {
  95 public:
  96     wxRegTipProvider(const wxString& keyname);
  97
  98     virtual wxString GetTip();
  99 };
 100
 101 // Empty implementation for now to keep the linker happy
 102 wxString wxRegTipProvider::GetTip()
 103 {
 104     return wxEmptyString;
 105 }
 106
 107 #endif // __WIN32__
 108
 109 // the dialog we show in wxShowTip()
 110 class WXDLLIMPEXP_ADV wxTipDialog : public wxDialog
 111 {
 112 public:
 113     wxTipDialog(wxWindow *parent,
 114                 wxTipProvider *tipProvider,
 115                 bool showAtStartup);
 116
 117     // the tip dialog has "Show tips on startup" checkbox - return true if it
 118     // was checked (or wasn't unchecked)
 119     bool ShowTipsOnStartup() const { return m_checkbox->GetValue(); }
 120
 121     // sets the (next) tip text
 122     void SetTipText() { m_text->SetValue(m_tipProvider->GetTip()); }
 123
 124     // "Next" button handler
 125     void OnNextTip(wxCommandEvent& WXUNUSED(event)) { SetTipText(); }
 126
 127 private:
 128     wxTipProvider *m_tipProvider;
 129
 130     wxTextCtrl *m_text;
 131     wxCheckBox *m_checkbox;
 132
 133     DECLARE_EVENT_TABLE()
 134     DECLARE_NO_COPY_CLASS(wxTipDialog)
 135 };
 136
 137 // ============================================================================
 138 // implementation
 139 // ============================================================================
 140
 141 // ----------------------------------------------------------------------------
 142 // wxFileTipProvider
 143 // ----------------------------------------------------------------------------
 144
 145 wxFileTipProvider::wxFileTipProvider(const wxString& filename,
 146                                      size_t currentTip)
 147                  : wxTipProvider(currentTip), m_textfile(filename)
 148 {
 149     m_textfile.Open();
 150 }
 151
 152 wxString wxFileTipProvider::GetTip()
 153 {
 154     size_t count = m_textfile.GetLineCount();
 155     if ( !count )
 156     {
 157         return _("Tips not available, sorry!");
 158     }
 159
 160     wxString tip;
 161
 162     // Comments start with a # symbol.
 163     // Loop reading lines until get the first one that isn't a comment.
 164     // The max number of loop executions is the number of lines in the
 165     // textfile so that can't go into an eternal loop in the [oddball]
 166     // case of a comment-only tips file, or the developer has vetoed
 167     // them all via PreprecessTip().
 168     for ( size_t i=0; i < count; i++ )
 169     {
 170         // The current tip may be at the last line of the textfile, (or
 171         // past it, if the number of lines in the textfile changed, such
 172         // as changing to a different textfile, with less tips). So check
 173         // to see at last line of text file, (or past it)...
 174         if ( m_currentTip >= count )
 175         {
 176             // .. and if so, wrap back to line 0.
 177             m_currentTip = 0;
 178         }
 179
 180         // Read the tip, and increment the current tip counter.
 181         tip = m_textfile.GetLine(m_currentTip++);
 182
 183         // Allow a derived class's overrided virtual to modify the tip
 184         // now if so desired.
 185         tip = PreprocessTip(tip);
 186
 187         // Break if tip isn't a comment, and isn't an empty string
 188         // (or only stray space characters).
 189         if ( !tip.StartsWith(wxT("#")) && (tip.Trim() != wxEmptyString) )
 190         {
 191             break;
 192         }
 193     }
 194
 195     // If tip starts with '_(', then it is a gettext string of format
 196     // _("My \"global\" tip text") so first strip off the leading '_("'...
 197     if ( tip.StartsWith(wxT("_(\"" ), &tip))
 198     {
 199         //...and strip off the trailing '")'...
 200         tip = tip.BeforeLast(wxT('\"'));
 201         // ...and replace escaped quotes
 202         tip.Replace(wxT("\\\""), wxT("\""));
 203     }
 204
 205     return tip;
 206 }
 207
 208 // ----------------------------------------------------------------------------
 209 // wxTipDialog
 210 // ----------------------------------------------------------------------------
 211
 212 BEGIN_EVENT_TABLE(wxTipDialog, wxDialog)
 213     EVT_BUTTON(wxID_NEXT_TIP, wxTipDialog::OnNextTip)
 214     EVT_BUTTON(wxID_CLOSE, wxTipDialog::OnCancel)
 215 END_EVENT_TABLE()
 216
 217 wxTipDialog::wxTipDialog(wxWindow *parent,
 218                          wxTipProvider *tipProvider,
 219                          bool showAtStartup)
 220            : wxDialog(parent, wxID_ANY, _("Tip of the Day"),
 221                       wxDefaultPosition, wxDefaultSize,
 222                       wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
 223 {
 224     m_tipProvider = tipProvider;
 225     bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
 226
 227     // 1) create all controls in tab order
 228
 229     // smart phones does not support or do not waste space for wxButtons
 230 #ifndef __SMARTPHONE__
 231     wxButton *btnClose = new wxButton(this, wxID_CLOSE);
 232 #endif
 233
 234     m_checkbox = new wxCheckBox(this, wxID_ANY, _("&Show tips at startup"));
 235     m_checkbox->SetValue(showAtStartup);
 236
 237     // smart phones does not support or do not waste space for wxButtons
 238 #ifndef __SMARTPHONE__
 239     wxButton *btnNext = new wxButton(this, wxID_NEXT_TIP, _("&Next Tip"));
 240 #endif
 241
 242     wxStaticText *text = new wxStaticText(this, wxID_ANY, _("Did you know..."));
 243
 244     // Currently this causes the bottom half to be chopped off,
 245     // so disable the large font
 246 #ifndef __WXMSW__
 247     if (!isPda)
 248     {
 249         wxFont font = text->GetFont();
 250         font.SetPointSize(int(1.6 * font.GetPointSize()));
 251         font.SetWeight(wxFONTWEIGHT_BOLD);
 252         text->SetFont(font);
 253     }
 254 #endif
 255
 256     m_text = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
 257                             wxDefaultPosition, wxSize(200, 160),
 258                             wxTE_MULTILINE |
 259                             wxTE_READONLY |
 260                             wxTE_NO_VSCROLL |
 261                             wxTE_RICH | // a hack to get rid of vert scrollbar
 262                             wxSUNKEN_BORDER);
 263 #if defined(__WXMSW__)
 264     m_text->SetFont(wxFont(12, wxSWISS, wxNORMAL, wxNORMAL));
 265 #endif
 266
 267 //#if defined(__WXPM__)
 268     //
 269     // The only way to get icons into an OS/2 static bitmap control
 270     //
 271 //    wxBitmap                        vBitmap;
 272
 273 //    vBitmap.SetId(wxICON_TIP); // OS/2 specific bitmap method--OS/2 wxBitmaps all have an ID.
 274 //                               // and for StatBmp's under OS/2 it MUST be a valid resource ID.
 275 //
 276 //    wxStaticBitmap*                 bmp = new wxStaticBitmap(this, wxID_ANY, vBitmap);
 277 //
 278 //#else
 279
 280     wxIcon icon = wxArtProvider::GetIcon(wxART_TIP, wxART_CMN_DIALOG);
 281     wxStaticBitmap *bmp = new wxStaticBitmap(this, wxID_ANY, icon);
 282
 283 //#endif
 284
 285     // 2) put them in boxes
 286
 287     wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
 288
 289     wxBoxSizer *icon_text = new wxBoxSizer( wxHORIZONTAL );
 290     icon_text->Add( bmp, 0, wxCENTER );
 291     icon_text->Add( text, 1, wxCENTER | wxLEFT, wxLARGESMALL(20,0) );
 292     topsizer->Add( icon_text, 0, wxEXPAND | wxALL, wxLARGESMALL(10,0) );
 293
 294     topsizer->Add( m_text, 1, wxEXPAND | wxLEFT|wxRIGHT, wxLARGESMALL(10,0) );
 295
 296     wxBoxSizer *bottom = new wxBoxSizer( wxHORIZONTAL );
 297     if (isPda)
 298         topsizer->Add( m_checkbox, 0, wxCENTER|wxTOP );
 299     else
 300         bottom->Add( m_checkbox, 0, wxCENTER );
 301
 302     // smart phones does not support or do not waste space for wxButtons
 303 #ifdef __SMARTPHONE__
 304     SetRightMenu(wxID_NEXT_TIP, _("Next"));
 305     SetLeftMenu(wxID_CLOSE);
 306 #else
 307     if (!isPda)
 308         bottom->Add( 10,10,1 );
 309     bottom->Add( btnNext, 0, wxCENTER | wxLEFT, wxLARGESMALL(10,0) );
 310     bottom->Add( btnClose, 0, wxCENTER | wxLEFT, wxLARGESMALL(10,0) );
 311 #endif
 312
 313     if (isPda)
 314         topsizer->Add( bottom, 0, wxCENTER | wxALL, 5 );
 315     else
 316         topsizer->Add( bottom, 0, wxEXPAND | wxALL, wxLARGESMALL(10,0) );
 317
 318     SetTipText();
 319
 320     SetSizer( topsizer );
 321
 322     topsizer->SetSizeHints( this );
 323     topsizer->Fit( this );
 324
 325     Centre(wxBOTH | wxCENTER_FRAME);
 326 }
 327
 328 // ----------------------------------------------------------------------------
 329 // our public interface
 330 // ----------------------------------------------------------------------------
 331
 332 wxTipProvider *wxCreateFileTipProvider(const wxString& filename,
 333                                        size_t currentTip)
 334 {
 335     return new wxFileTipProvider(filename, currentTip);
 336 }
 337
 338 bool wxShowTip(wxWindow *parent,
 339                wxTipProvider *tipProvider,
 340                bool showAtStartup)
 341 {
 342     wxTipDialog dlg(parent, tipProvider, showAtStartup);
 343     dlg.ShowModal();
 344
 345     return dlg.ShowTipsOnStartup();
 346 }
 347
 348 #endif // wxUSE_STARTUP_TIPS
 349