wxWidgets/include/wx/apptrait.h

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/apptrait.h
// Purpose: declaration of wxAppTraits and derived classes
// Author: Vadim Zeitlin
// Modified by:
// Created: 19.06.2003
// RCS-ID: $Id$
// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_APPTRAIT_H_
#define _WX_APPTRAIT_H_
#include "wx/string.h"
#include "wx/platinfo.h"
class WXDLLIMPEXP_BASE wxObject;
class WXDLLEXPORT wxAppTraits;
#if wxUSE_FONTMAP
class WXDLLEXPORT wxFontMapper;
#endif // wxUSE_FONTMAP
class WXDLLIMPEXP_BASE wxLog;
class WXDLLIMPEXP_BASE wxMessageOutput;
class WXDLLEXPORT wxRendererNative;
class WXDLLIMPEXP_BASE wxString;
class GSocketGUIFunctionsTable;
// ----------------------------------------------------------------------------
// wxAppTraits: this class defines various configurable aspects of wxApp
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxStandardPathsBase;
class WXDLLIMPEXP_BASE wxAppTraitsBase
{
public:
// needed since this class declares virtual members
virtual ~wxAppTraitsBase() { }
// hooks for creating the global objects, may be overridden by the user
// ------------------------------------------------------------------------
#if wxUSE_LOG
// create the default log target
virtual wxLog *CreateLogTarget() = 0;
#endif // wxUSE_LOG
// create the global object used for printing out messages
virtual wxMessageOutput *CreateMessageOutput() = 0;
#if wxUSE_FONTMAP
// create the global font mapper object used for encodings/charset mapping
virtual wxFontMapper *CreateFontMapper() = 0;
#endif // wxUSE_FONTMAP
// get the renderer to use for drawing the generic controls (return value
// may be NULL in which case the default renderer for the current platform
// is used); this is used in GUI only and always returns NULL in console
//
// NB: returned pointer will be deleted by the caller
virtual wxRendererNative *CreateRenderer() = 0;
#if wxUSE_STDPATHS
// wxStandardPaths object is normally the same for wxBase and wxGUI
// except in the case of wxMac and wxCocoa
virtual wxStandardPathsBase& GetStandardPaths();
#endif // wxUSE_STDPATHS
// functions abstracting differences between GUI and console modes
// ------------------------------------------------------------------------
#ifdef __WXDEBUG__
// show the assert dialog with the specified message in GUI or just print
// the string to stderr in console mode
//
// base class version has an implementation (in spite of being pure
// virtual) in base/appbase.cpp which can be called as last resort.
//
// return true to suppress subsequent asserts, false to continue as before
virtual bool ShowAssertDialog(const wxString& msg) = 0;
#endif // __WXDEBUG__
// return true if fprintf(stderr) goes somewhere, false otherwise
virtual bool HasStderr() = 0;
// managing "pending delete" list: in GUI mode we can't immediately delete
// some objects because there may be unprocessed events for them and so we
// only do it during the next idle loop iteration while this is, of course,
// unnecessary in wxBase, so we have a few functions to abstract these
// operations
// add the object to the pending delete list in GUI, delete it immediately
// in wxBase
virtual void ScheduleForDestroy(wxObject *object) = 0;
// remove this object from the pending delete list in GUI, do nothing in
// wxBase
virtual void RemoveFromPendingDelete(wxObject *object) = 0;
#if wxUSE_SOCKETS
// return table of GUI callbacks for GSocket code or NULL in wxBase. This
// is needed because networking classes are in their own library and so
// they can't directly call GUI functions (the same net library can be
// used in both GUI and base apps). To complicate it further, GUI library
// ("wxCore") doesn't depend on networking library and so only a functions
// table can be passed around
virtual GSocketGUIFunctionsTable* GetSocketGUIFunctionsTable() = 0;
#endif
// return information about the (native) toolkit currently used and its
// runtime (not compile-time) version.
// returns wxPORT_BASE for console applications and one of the remaining
// wxPORT_* values for GUI applications.
virtual wxPortId GetToolkitVersion(int *majVer, int *minVer) const = 0;
// return true if the port is using wxUniversal for the GUI, false if not
virtual bool IsUsingUniversalWidgets() const = 0;
// return the name of the Desktop Environment such as
// "KDE" or "GNOME". May return an empty string.
virtual wxString GetDesktopEnvironment() const { return wxEmptyString; }
};
// ----------------------------------------------------------------------------
// include the platform-specific version of the class
// ----------------------------------------------------------------------------
// NB: test for __UNIX__ before __WXMAC__ as under Darwin we want to use the
// Unix code (and otherwise __UNIX__ wouldn't be defined)
// ABX: check __WIN32__ instead of __WXMSW__ for the same MSWBase in any Win32 port
#if defined(__WXPALMOS__)
#include "wx/palmos/apptbase.h"
#elif defined(__WIN32__)
#include "wx/msw/apptbase.h"
#elif defined(__UNIX__) && !defined(__EMX__)
#include "wx/unix/apptbase.h"
#elif defined(__WXMAC__)
#include "wx/mac/apptbase.h"
#elif defined(__OS2__)
#include "wx/os2/apptbase.h"
#else // no platform-specific methods to add to wxAppTraits
// wxAppTraits must be a class because it was forward declared as class
class WXDLLIMPEXP_BASE wxAppTraits : public wxAppTraitsBase
{
};
#endif // platform
// ============================================================================
// standard traits for console and GUI applications
// ============================================================================
// ----------------------------------------------------------------------------
// wxConsoleAppTraitsBase: wxAppTraits implementation for the console apps
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxConsoleAppTraitsBase : public wxAppTraits
{
public:
#if wxUSE_LOG
virtual wxLog *CreateLogTarget();
#endif // wxUSE_LOG
virtual wxMessageOutput *CreateMessageOutput();
#if wxUSE_FONTMAP
virtual wxFontMapper *CreateFontMapper();
#endif // wxUSE_FONTMAP
virtual wxRendererNative *CreateRenderer();
#if wxUSE_SOCKETS
virtual GSocketGUIFunctionsTable* GetSocketGUIFunctionsTable();
#endif
#ifdef __WXDEBUG__
virtual bool ShowAssertDialog(const wxString& msg);
#endif // __WXDEBUG__
virtual bool HasStderr();
virtual void ScheduleForDestroy(wxObject *object);
virtual void RemoveFromPendingDelete(wxObject *object);
// the GetToolkitVersion for console application is always the same
virtual wxPortId GetToolkitVersion(int *verMaj, int *verMin) const
{
// no toolkits (wxBase is for console applications without GUI support)
// NB: zero means "no toolkit", -1 means "not initialized yet"
// so we must use zero here!
if (verMaj) *verMaj = 0;
if (verMin) *verMin = 0;
return wxPORT_BASE;
}
virtual bool IsUsingUniversalWidgets() const { return false; }
};
// ----------------------------------------------------------------------------
// wxGUIAppTraitsBase: wxAppTraits implementation for the GUI apps
// ----------------------------------------------------------------------------
#if wxUSE_GUI
class WXDLLEXPORT wxGUIAppTraitsBase : public wxAppTraits
{
public:
#if wxUSE_LOG
virtual wxLog *CreateLogTarget();
#endif // wxUSE_LOG
virtual wxMessageOutput *CreateMessageOutput();
#if wxUSE_FONTMAP
virtual wxFontMapper *CreateFontMapper();
#endif // wxUSE_FONTMAP
virtual wxRendererNative *CreateRenderer();
#if wxUSE_SOCKETS
virtual GSocketGUIFunctionsTable* GetSocketGUIFunctionsTable();
#endif
#ifdef __WXDEBUG__
virtual bool ShowAssertDialog(const wxString& msg);
#endif // __WXDEBUG__
virtual bool HasStderr();
virtual void ScheduleForDestroy(wxObject *object);
virtual void RemoveFromPendingDelete(wxObject *object);
virtual bool IsUsingUniversalWidgets() const
{
#ifdef __WXUNIVERSAL__
return true;
#else
return false;
#endif
}
};
#endif // wxUSE_GUI
// ----------------------------------------------------------------------------
// include the platform-specific version of the classes above
// ----------------------------------------------------------------------------
// ABX: check __WIN32__ instead of __WXMSW__ for the same MSWBase in any Win32 port
#if defined(__WXPALMOS__)
#include "wx/palmos/apptrait.h"
#elif defined(__WIN32__)
#include "wx/msw/apptrait.h"
#elif defined(__UNIX__) && !defined(__EMX__)
#include "wx/unix/apptrait.h"
#elif defined(__WXMAC__)
#include "wx/mac/apptrait.h"
#elif defined(__WXPM__)
#include "wx/os2/apptrait.h"
#elif defined(__DOS__)
#include "wx/msdos/apptrait.h"
#else
#if wxUSE_GUI
class wxGUIAppTraits : public wxGUIAppTraitsBase
{
};
#endif // wxUSE_GUI
class wxConsoleAppTraits: public wxConsoleAppTraitsBase
{
};
#endif // platform
#endif // _WX_APPTRAIT_H_