include/wx/apptrait.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/apptrait.h
   3 // Purpose:     declaration of wxAppTraits and derived classes
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     19.06.2003
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_APPTRAIT_H_
  13 #define _WX_APPTRAIT_H_
  14
  15 #include "wx/string.h"
  16
  17 class WXDLLIMPEXP_BASE wxObject;
  18 class WXDLLEXPORT wxAppTraits;
  19 #if wxUSE_FONTMAP
  20     class WXDLLEXPORT wxFontMapper;
  21 #endif // wxUSE_FONTMAP
  22 class WXDLLIMPEXP_BASE wxLog;
  23 class WXDLLIMPEXP_BASE wxMessageOutput;
  24 class WXDLLEXPORT wxRendererNative;
  25 class WXDLLIMPEXP_BASE wxString;
  26
  27 class GSocketGUIFunctionsTable;
  28
  29 // ----------------------------------------------------------------------------
  30 // toolkit information
  31 // ----------------------------------------------------------------------------
  32
  33 // Information about the toolkit that the app is running under (e.g. wxMSW):
  34 struct WXDLLIMPEXP_BASE wxToolkitInfo
  35 {
  36     // Short name of the toolkit (e.g. "msw" or "mswuniv"); empty for console:
  37     wxString shortName;
  38     // Descriptive name of the toolkit, human readable (e.g. "wxMSW" or
  39     // "wxMSW/Universal"); "wxBase" for console apps:
  40     wxString name;
  41     // Version of the underlying toolkit or of the OS for console apps:
  42     int versionMajor, versionMinor;
  43     // OS mnenomics, e.g. wxGTK or wxMSW:
  44     int os;
  45 };
  46
  47
  48 // ----------------------------------------------------------------------------
  49 // wxAppTraits: this class defines various configurable aspects of wxApp
  50 // ----------------------------------------------------------------------------
  51
  52 class WXDLLIMPEXP_BASE wxAppTraitsBase
  53 {
  54 public:
  55     // hooks for creating the global objects, may be overridden by the user
  56     // ------------------------------------------------------------------------
  57
  58 #if wxUSE_LOG
  59     // create the default log target
  60     virtual wxLog *CreateLogTarget() = 0;
  61 #endif // wxUSE_LOG
  62
  63     // create the global object used for printing out messages
  64     virtual wxMessageOutput *CreateMessageOutput() = 0;
  65
  66 #if wxUSE_FONTMAP
  67     // create the global font mapper object used for encodings/charset mapping
  68     virtual wxFontMapper *CreateFontMapper() = 0;
  69 #endif // wxUSE_FONTMAP
  70
  71     // get the renderer to use for drawing the generic controls (return value
  72     // may be NULL in which case the default renderer for the current platform
  73     // is used); this is used in GUI only and always returns NULL in console
  74     //
  75     // NB: returned pointer will be deleted by the caller
  76     virtual wxRendererNative *CreateRenderer() = 0;
  77
  78
  79     // functions abstracting differences between GUI and console modes
  80     // ------------------------------------------------------------------------
  81
  82 #ifdef __WXDEBUG__
  83     // show the assert dialog with the specified message in GUI or just print
  84     // the string to stderr in console mode
  85     //
  86     // base class version has an implementation (in spite of being pure
  87     // virtual) in base/appbase.cpp which can be called as last resort.
  88     //
  89     // return true to suppress subsequent asserts, false to continue as before
  90     virtual bool ShowAssertDialog(const wxString& msg) = 0;
  91 #endif // __WXDEBUG__
  92
  93     // return true if fprintf(stderr) goes somewhere, false otherwise
  94     virtual bool HasStderr() = 0;
  95
  96     // managing "pending delete" list: in GUI mode we can't immediately delete
  97     // some objects because there may be unprocessed events for them and so we
  98     // only do it during the next idle loop iteration while this is, of course,
  99     // unnecessary in wxBase, so we have a few functions to abstract these
 100     // operations
 101
 102     // add the object to the pending delete list in GUI, delete it immediately
 103     // in wxBase
 104     virtual void ScheduleForDestroy(wxObject *object) = 0;
 105
 106     // remove this object from the pending delete list in GUI, do nothing in
 107     // wxBase
 108     virtual void RemoveFromPendingDelete(wxObject *object) = 0;
 109
 110 #if wxUSE_SOCKETS
 111     // return table of GUI callbacks for GSocket code or NULL in wxBase. This
 112     // is needed because networking classes are in their own library and so
 113     // they can't directly call GUI functions (the same net library can be
 114     // used in both GUI and base apps). To complicate it further, GUI library
 115     // ("wxCore") doesn't depend on networking library and so only a functions
 116     // table can be passed around
 117     virtual GSocketGUIFunctionsTable* GetSocketGUIFunctionsTable() = 0;
 118 #endif
 119
 120
 121     // return information about what toolkit is running; we need for two things
 122     // that are both contained in wxBase:
 123     //  - wxGetOsVersion() behaves differently in GUI and non-GUI builds under
 124     //    Unix: in the former case it returns the information about the toolkit
 125     //    and in the latter -- about the OS, so we need to virtualize it
 126     //  - wxDynamicLibrary::CanonicalizePluginName() must embed toolkit
 127     //    signature in DLL name
 128     virtual wxToolkitInfo& GetToolkitInfo() = 0;
 129 };
 130
 131 // ----------------------------------------------------------------------------
 132 // include the platform-specific version of the class
 133 // ----------------------------------------------------------------------------
 134
 135 // NB: test for __UNIX__ before __WXMAC__ as under Darwin we want to use the
 136 //     Unix code (and otherwise __UNIX__ wouldn't be defined)
 137 #if defined(__WXMSW__)
 138     #include "wx/msw/apptbase.h"
 139 #elif defined(__UNIX__) && !defined(__EMX__)
 140     #include "wx/unix/apptbase.h"
 141 #elif defined(__WXMAC__)
 142     #include "wx/mac/apptbase.h"
 143 #elif defined(__OS2__)
 144     #include "wx/os2/apptbase.h"
 145 #else // no platform-specific methods to add to wxAppTraits
 146     // wxAppTraits must be a class because it was forward declared as class
 147     class WXDLLIMPEXP_BASE wxAppTraits : public wxAppTraitsBase
 148     {
 149     };
 150 #endif // platform
 151
 152 // ============================================================================
 153 // standard traits for console and GUI applications
 154 // ============================================================================
 155
 156 // ----------------------------------------------------------------------------
 157 // wxConsoleAppTraitsBase: wxAppTraits implementation for the console apps
 158 // ----------------------------------------------------------------------------
 159
 160 class WXDLLIMPEXP_BASE wxConsoleAppTraitsBase : public wxAppTraits
 161 {
 162 public:
 163 #if wxUSE_LOG
 164     virtual wxLog *CreateLogTarget();
 165 #endif // wxUSE_LOG
 166     virtual wxMessageOutput *CreateMessageOutput();
 167 #if wxUSE_FONTMAP
 168     virtual wxFontMapper *CreateFontMapper();
 169 #endif // wxUSE_FONTMAP
 170     virtual wxRendererNative *CreateRenderer();
 171 #if wxUSE_SOCKETS
 172     virtual GSocketGUIFunctionsTable* GetSocketGUIFunctionsTable();
 173 #endif
 174
 175 #ifdef __WXDEBUG__
 176     virtual bool ShowAssertDialog(const wxString& msg);
 177 #endif // __WXDEBUG__
 178     virtual bool HasStderr();
 179
 180     virtual void ScheduleForDestroy(wxObject *object);
 181     virtual void RemoveFromPendingDelete(wxObject *object);
 182 };
 183
 184 // ----------------------------------------------------------------------------
 185 // wxGUIAppTraitsBase: wxAppTraits implementation for the GUI apps
 186 // ----------------------------------------------------------------------------
 187
 188 #if wxUSE_GUI
 189
 190 class WXDLLEXPORT wxGUIAppTraitsBase : public wxAppTraits
 191 {
 192 public:
 193 #if wxUSE_LOG
 194     virtual wxLog *CreateLogTarget();
 195 #endif // wxUSE_LOG
 196     virtual wxMessageOutput *CreateMessageOutput();
 197 #if wxUSE_FONTMAP
 198     virtual wxFontMapper *CreateFontMapper();
 199 #endif // wxUSE_FONTMAP
 200     virtual wxRendererNative *CreateRenderer();
 201 #if wxUSE_SOCKETS
 202     virtual GSocketGUIFunctionsTable* GetSocketGUIFunctionsTable();
 203 #endif
 204
 205 #ifdef __WXDEBUG__
 206     virtual bool ShowAssertDialog(const wxString& msg);
 207 #endif // __WXDEBUG__
 208     virtual bool HasStderr();
 209
 210     virtual void ScheduleForDestroy(wxObject *object);
 211     virtual void RemoveFromPendingDelete(wxObject *object);
 212 };
 213
 214 #endif // wxUSE_GUI
 215
 216 // ----------------------------------------------------------------------------
 217 // include the platform-specific version of the classes above
 218 // ----------------------------------------------------------------------------
 219
 220 #if defined(__WXMSW__)
 221     #include "wx/msw/apptrait.h"
 222 #elif defined(__UNIX__) && !defined(__EMX__)
 223     #include "wx/unix/apptrait.h"
 224 #elif defined(__WXMAC__)
 225     #include "wx/mac/apptrait.h"
 226 #elif defined(__WXPM__)
 227     #include "wx/os2/apptrait.h"
 228 #else
 229     // at least, we need an implementation of GetToolkitInfo !
 230     #if wxUSE_GUI
 231         class wxGUIAppTraits : public wxGUIAppTraitsBase
 232         {
 233             virtual wxToolkitInfo& GetToolkitInfo();
 234         };
 235     #endif // wxUSE_GUI
 236     class wxConsoleAppTraits: public wxConsoleAppTraitsBase
 237     {
 238         virtual wxToolkitInfo& GetToolkitInfo();
 239     };
 240 #endif // platform
 241
 242 #endif // _WX_APPTRAIT_H_
 243