git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52834 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
		
			
				
	
	
		
			311 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			311 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
///////////////////////////////////////////////////////////////////////////////
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// Name:        wx/apptrait.h
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// Purpose:     declaration of wxAppTraits and derived classes
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// Author:      Vadim Zeitlin
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// Modified by:
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// Created:     19.06.2003
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// RCS-ID:      $Id$
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// Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence:     wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_APPTRAIT_H_
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#define _WX_APPTRAIT_H_
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#include "wx/string.h"
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#include "wx/platinfo.h"
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class WXDLLIMPEXP_FWD_BASE wxArrayString;
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class WXDLLIMPEXP_FWD_BASE wxConfigBase;
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class WXDLLIMPEXP_FWD_BASE wxEventLoopBase;
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#if wxUSE_FONTMAP
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    class WXDLLIMPEXP_FWD_CORE wxFontMapper;
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#endif // wxUSE_FONTMAP
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class WXDLLIMPEXP_FWD_BASE wxLog;
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class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
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class WXDLLIMPEXP_FWD_BASE wxObject;
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class WXDLLIMPEXP_FWD_CORE wxRendererNative;
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class WXDLLIMPEXP_FWD_BASE wxStandardPathsBase;
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class WXDLLIMPEXP_FWD_BASE wxString;
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class WXDLLIMPEXP_FWD_BASE wxTimer;
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class WXDLLIMPEXP_FWD_BASE wxTimerImpl;
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class GSocketManager;
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// ----------------------------------------------------------------------------
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// wxAppTraits: this class defines various configurable aspects of wxApp
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxAppTraitsBase
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{
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public:
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    // needed since this class declares virtual members
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    virtual ~wxAppTraitsBase() { }
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    // hooks for working with the global objects, may be overridden by the user
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    // ------------------------------------------------------------------------
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#if wxUSE_CONFIG
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    // create the default configuration object (base class version is
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    // implemented in config.cpp and creates wxRegConfig for wxMSW and
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    // wxFileConfig for all the other platforms)
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    virtual wxConfigBase *CreateConfig();
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#endif // wxUSE_CONFIG
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#if wxUSE_LOG
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    // create the default log target
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    virtual wxLog *CreateLogTarget() = 0;
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#endif // wxUSE_LOG
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    // create the global object used for printing out messages
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    virtual wxMessageOutput *CreateMessageOutput() = 0;
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#if wxUSE_FONTMAP
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    // create the global font mapper object used for encodings/charset mapping
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    virtual wxFontMapper *CreateFontMapper() = 0;
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#endif // wxUSE_FONTMAP
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    // get the renderer to use for drawing the generic controls (return value
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    // may be NULL in which case the default renderer for the current platform
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    // is used); this is used in GUI only and always returns NULL in console
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    //
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    // NB: returned pointer will be deleted by the caller
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    virtual wxRendererNative *CreateRenderer() = 0;
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    // wxStandardPaths object is normally the same for wxBase and wxGUI
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    // except in the case of wxMac and wxCocoa
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    virtual wxStandardPathsBase& GetStandardPaths();
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#if wxUSE_INTL
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    // called during wxApp initialization to set the locale to correspond to
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    // the user default (i.e. system locale under Windows, LC_ALL under Unix)
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    virtual void SetLocale();
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#endif // wxUSE_INTL
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    // functions abstracting differences between GUI and console modes
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    // ------------------------------------------------------------------------
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#ifdef __WXDEBUG__
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    // show the assert dialog with the specified message in GUI or just print
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    // the string to stderr in console mode
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    //
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    // base class version has an implementation (in spite of being pure
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    // virtual) in base/appbase.cpp which can be called as last resort.
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    //
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    // return true to suppress subsequent asserts, false to continue as before
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    virtual bool ShowAssertDialog(const wxString& msg) = 0;
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#endif // __WXDEBUG__
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    // return true if fprintf(stderr) goes somewhere, false otherwise
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    virtual bool HasStderr() = 0;
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    // managing "pending delete" list: in GUI mode we can't immediately delete
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    // some objects because there may be unprocessed events for them and so we
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    // only do it during the next idle loop iteration while this is, of course,
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    // unnecessary in wxBase, so we have a few functions to abstract these
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    // operations
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    // add the object to the pending delete list in GUI, delete it immediately
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    // in wxBase
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    virtual void ScheduleForDestroy(wxObject *object) = 0;
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    // remove this object from the pending delete list in GUI, do nothing in
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    // wxBase
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    virtual void RemoveFromPendingDelete(wxObject *object) = 0;
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#if wxUSE_SOCKETS
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    // return socket manager: this is usually different for console and GUI
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    // applications (although some ports use the same implementation for both)
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    virtual GSocketManager *GetSocketManager() = 0;
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#endif
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    // create a new, port specific, instance of the event loop used by wxApp
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    virtual wxEventLoopBase *CreateEventLoop() = 0;
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#if wxUSE_TIMER
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    // return platform and toolkit dependent wxTimer implementation
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    virtual wxTimerImpl *CreateTimerImpl(wxTimer *timer) = 0;
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#endif
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#if wxUSE_THREADS
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    virtual void MutexGuiEnter();
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    virtual void MutexGuiLeave();
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#endif
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    // functions returning port-specific information
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    // ------------------------------------------------------------------------
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    // return information about the (native) toolkit currently used and its
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    // runtime (not compile-time) version.
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    // returns wxPORT_BASE for console applications and one of the remaining
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    // wxPORT_* values for GUI applications.
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    virtual wxPortId GetToolkitVersion(int *majVer = NULL, int *minVer = NULL) const = 0;
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    // return true if the port is using wxUniversal for the GUI, false if not
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    virtual bool IsUsingUniversalWidgets() const = 0;
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    // return the name of the Desktop Environment such as
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    // "KDE" or "GNOME". May return an empty string.
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    virtual wxString GetDesktopEnvironment() const = 0;
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    // returns a short string to identify the block of the standard command
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    // line options parsed automatically by current port: if this string is
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    // empty, there are no such options, otherwise the function also fills
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    // passed arrays with the names and the descriptions of those options.
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    virtual wxString GetStandardCmdLineOptions(wxArrayString& names,
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                                               wxArrayString& desc) const
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    {
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        wxUnusedVar(names);
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        wxUnusedVar(desc);
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        return wxEmptyString;
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    }
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protected:
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#if wxUSE_STACKWALKER && defined( __WXDEBUG__ )
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    // utility function: returns the stack frame as a plain wxString
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    virtual wxString GetAssertStackTrace();
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#endif
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};
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// ----------------------------------------------------------------------------
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// include the platform-specific version of the class
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// ----------------------------------------------------------------------------
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// NB:  test for __UNIX__ before __WXMAC__ as under Darwin we want to use the
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//      Unix code (and otherwise __UNIX__ wouldn't be defined)
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// ABX: check __WIN32__ instead of __WXMSW__ for the same MSWBase in any Win32 port
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#if defined(__WXPALMOS__)
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    #include "wx/palmos/apptbase.h"
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#elif defined(__WIN32__)
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    #include "wx/msw/apptbase.h"
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#elif defined(__UNIX__) && !defined(__EMX__)
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    #include "wx/unix/apptbase.h"
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#elif defined(__OS2__)
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    #include "wx/os2/apptbase.h"
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#else // no platform-specific methods to add to wxAppTraits
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    // wxAppTraits must be a class because it was forward declared as class
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    class WXDLLIMPEXP_BASE wxAppTraits : public wxAppTraitsBase
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    {
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    };
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#endif // platform
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// ============================================================================
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// standard traits for console and GUI applications
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// ============================================================================
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// ----------------------------------------------------------------------------
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// wxConsoleAppTraitsBase: wxAppTraits implementation for the console apps
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxConsoleAppTraitsBase : public wxAppTraits
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{
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public:
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#if !wxUSE_CONSOLE_EVENTLOOP
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    virtual wxEventLoopBase *CreateEventLoop() { return NULL; }
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#endif // !wxUSE_CONSOLE_EVENTLOOP
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#if wxUSE_LOG
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    virtual wxLog *CreateLogTarget();
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#endif // wxUSE_LOG
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    virtual wxMessageOutput *CreateMessageOutput();
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#if wxUSE_FONTMAP
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    virtual wxFontMapper *CreateFontMapper();
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#endif // wxUSE_FONTMAP
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    virtual wxRendererNative *CreateRenderer();
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#ifdef __WXDEBUG__
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    virtual bool ShowAssertDialog(const wxString& msg);
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#endif // __WXDEBUG__
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    virtual bool HasStderr();
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    virtual void ScheduleForDestroy(wxObject *object);
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    virtual void RemoveFromPendingDelete(wxObject *object);
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    // the GetToolkitVersion for console application is always the same
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    virtual wxPortId GetToolkitVersion(int *verMaj = NULL, int *verMin = NULL) const
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    {
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        // no toolkits (wxBase is for console applications without GUI support)
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        // NB: zero means "no toolkit", -1 means "not initialized yet"
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        //     so we must use zero here!
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        if (verMaj) *verMaj = 0;
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        if (verMin) *verMin = 0;
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        return wxPORT_BASE;
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    }
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    virtual bool IsUsingUniversalWidgets() const { return false; }
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    virtual wxString GetDesktopEnvironment() const { return wxEmptyString; }
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};
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// ----------------------------------------------------------------------------
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// wxGUIAppTraitsBase: wxAppTraits implementation for the GUI apps
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// ----------------------------------------------------------------------------
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#if wxUSE_GUI
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class WXDLLIMPEXP_CORE wxGUIAppTraitsBase : public wxAppTraits
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{
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public:
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#if wxUSE_LOG
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    virtual wxLog *CreateLogTarget();
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#endif // wxUSE_LOG
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    virtual wxMessageOutput *CreateMessageOutput();
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#if wxUSE_FONTMAP
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    virtual wxFontMapper *CreateFontMapper();
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#endif // wxUSE_FONTMAP
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    virtual wxRendererNative *CreateRenderer();
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#ifdef __WXDEBUG__
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    virtual bool ShowAssertDialog(const wxString& msg);
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#endif // __WXDEBUG__
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    virtual bool HasStderr();
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    virtual void ScheduleForDestroy(wxObject *object);
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    virtual void RemoveFromPendingDelete(wxObject *object);
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    virtual bool IsUsingUniversalWidgets() const
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    {
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    #ifdef __WXUNIVERSAL__
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        return true;
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    #else
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        return false;
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    #endif
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    }
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    virtual wxString GetDesktopEnvironment() const { return wxEmptyString; }
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};
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#endif // wxUSE_GUI
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// ----------------------------------------------------------------------------
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// include the platform-specific version of the classes above
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// ----------------------------------------------------------------------------
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// ABX: check __WIN32__ instead of __WXMSW__ for the same MSWBase in any Win32 port
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#if defined(__WXPALMOS__)
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    #include "wx/palmos/apptrait.h"
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#elif defined(__WIN32__)
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    #include "wx/msw/apptrait.h"
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#elif defined(__OS2__)
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    #include "wx/os2/apptrait.h"
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#elif defined(__UNIX__)
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    #include "wx/unix/apptrait.h"
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#elif defined(__DOS__)
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    #include "wx/msdos/apptrait.h"
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#else
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    #if wxUSE_GUI
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        class wxGUIAppTraits : public wxGUIAppTraitsBase
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        {
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        };
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    #endif // wxUSE_GUI
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    class wxConsoleAppTraits: public wxConsoleAppTraitsBase
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    {
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    };
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#endif // platform
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#endif // _WX_APPTRAIT_H_
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