wxWidgets/include/wx/apptrait.h

320 lines
11 KiB
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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_FWD_BASE wxArrayString;
class WXDLLIMPEXP_FWD_BASE wxConfigBase;
class WXDLLIMPEXP_FWD_BASE wxEventLoopBase;
#if wxUSE_FONTMAP
class WXDLLIMPEXP_FWD_CORE wxFontMapper;
#endif // wxUSE_FONTMAP
class WXDLLIMPEXP_FWD_BASE wxLog;
class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
class WXDLLIMPEXP_FWD_BASE wxObject;
class WXDLLIMPEXP_FWD_CORE wxRendererNative;
class WXDLLIMPEXP_FWD_BASE wxStandardPaths;
class WXDLLIMPEXP_FWD_BASE wxString;
class WXDLLIMPEXP_FWD_BASE wxTimer;
class WXDLLIMPEXP_FWD_BASE wxTimerImpl;
class wxSocketManager;
// ----------------------------------------------------------------------------
// wxAppTraits: this class defines various configurable aspects of wxApp
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxAppTraitsBase
{
public:
// needed since this class declares virtual members
virtual ~wxAppTraitsBase() { }
// hooks for working with the global objects, may be overridden by the user
// ------------------------------------------------------------------------
#if wxUSE_CONFIG
// create the default configuration object (base class version is
// implemented in config.cpp and creates wxRegConfig for wxMSW and
// wxFileConfig for all the other platforms)
virtual wxConfigBase *CreateConfig();
#endif // wxUSE_CONFIG
#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;
// wxStandardPaths object is normally the same for wxBase and wxGUI
// except in the case of wxMac and wxCocoa
virtual wxStandardPaths& GetStandardPaths();
#if wxUSE_INTL
// called during wxApp initialization to set the locale to correspond to
// the user default (i.e. system locale under Windows, LC_ALL under Unix)
virtual void SetLocale();
#endif // wxUSE_INTL
// functions abstracting differences between GUI and console modes
// ------------------------------------------------------------------------
// 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;
// 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
// this function is used by wxNet library to set the default socket manager
// to use: doing it like this allows us to keep all socket-related code in
// wxNet instead of having to pull it in wxBase itself as we'd have to do
// if we really implemented wxSocketManager here
//
// we don't take ownership of this pointer, it should have a lifetime
// greater than that of any socket (e.g. be a pointer to a static object)
static void SetDefaultSocketManager(wxSocketManager *manager)
{
ms_manager = manager;
}
// return socket manager: this is usually different for console and GUI
// applications (although some ports use the same implementation for both)
virtual wxSocketManager *GetSocketManager() { return ms_manager; }
#endif
// create a new, port specific, instance of the event loop used by wxApp
virtual wxEventLoopBase *CreateEventLoop() = 0;
#if wxUSE_TIMER
// return platform and toolkit dependent wxTimer implementation
virtual wxTimerImpl *CreateTimerImpl(wxTimer *timer) = 0;
#endif
#if wxUSE_THREADS
virtual void MutexGuiEnter();
virtual void MutexGuiLeave();
#endif
// functions returning port-specific information
// ------------------------------------------------------------------------
// 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 = NULL, int *minVer = NULL) 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 = 0;
// returns a short string to identify the block of the standard command
// line options parsed automatically by current port: if this string is
// empty, there are no such options, otherwise the function also fills
// passed arrays with the names and the descriptions of those options.
virtual wxString GetStandardCmdLineOptions(wxArrayString& names,
wxArrayString& desc) const
{
wxUnusedVar(names);
wxUnusedVar(desc);
return wxEmptyString;
}
protected:
#if wxUSE_STACKWALKER
// utility function: returns the stack frame as a plain wxString
virtual wxString GetAssertStackTrace();
#endif
private:
static wxSocketManager *ms_manager;
};
// ----------------------------------------------------------------------------
// 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(__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_CONSOLE_EVENTLOOP
virtual wxEventLoopBase *CreateEventLoop() { return NULL; }
#endif // !wxUSE_CONSOLE_EVENTLOOP
#if wxUSE_LOG
virtual wxLog *CreateLogTarget();
#endif // wxUSE_LOG
virtual wxMessageOutput *CreateMessageOutput();
#if wxUSE_FONTMAP
virtual wxFontMapper *CreateFontMapper();
#endif // wxUSE_FONTMAP
virtual wxRendererNative *CreateRenderer();
virtual bool ShowAssertDialog(const wxString& msg);
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 = NULL, int *verMin = NULL) 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; }
virtual wxString GetDesktopEnvironment() const { return wxEmptyString; }
};
// ----------------------------------------------------------------------------
// wxGUIAppTraitsBase: wxAppTraits implementation for the GUI apps
// ----------------------------------------------------------------------------
#if wxUSE_GUI
class WXDLLIMPEXP_CORE 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();
virtual bool ShowAssertDialog(const wxString& msg);
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
}
virtual wxString GetDesktopEnvironment() const { return wxEmptyString; }
};
#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(__OS2__)
#include "wx/os2/apptrait.h"
#elif defined(__UNIX__)
#include "wx/unix/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_