243 lines
6.5 KiB
C++
243 lines
6.5 KiB
C++
// new_gui.hxx - XML-configured GUI subsystem.
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#ifndef __NEW_GUI_HXX
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#define __NEW_GUI_HXX 1
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#include <simgear/props/props.hxx>
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#include <simgear/structure/subsystem_mgr.hxx>
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#include <simgear/misc/sg_path.hxx>
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#include <vector>
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#include <map>
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#include <memory> // for auto_ptr on some systems
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#include <cstring> // for strcmp in lstr() (in this header, alas)
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class FGMenuBar;
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class FGDialog;
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class FGColor;
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class FGFontCache;
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class puFont;
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/**
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* XML-configured GUI subsystem.
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*
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* This subsystem manages the graphical user interface for FlightGear.
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* It creates a menubar from the XML configuration file in
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* $FG_ROOT/gui/menubar.xml, then stores the configuration properties
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* for XML-configured dialog boxes found in $FG_ROOT/gui/dialogs/. It
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* can show or hide the menubar, and can display any dialog by name.
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*/
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class NewGUI : public SGSubsystem
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{
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public:
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/**
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* Constructor.
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*/
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NewGUI ();
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/**
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* Destructor.
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*/
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virtual ~NewGUI ();
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/**
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* Initialize the GUI subsystem.
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*/
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virtual void init ();
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virtual void shutdown ();
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/**
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* Reinitialize the GUI subsystem. Reloads all XML dialogs.
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*/
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virtual void reinit ();
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/**
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* Bind properties for the GUI subsystem.
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*
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* Currently, this method binds the properties for showing and
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* hiding the menu.
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*/
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virtual void bind ();
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/**
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* Unbind properties for the GUI subsystem.
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*/
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virtual void unbind ();
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/**
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* Update the GUI subsystem.
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*
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* Currently, this method is a no-op, because nothing the GUI
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* subsystem does is time-dependent.
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*/
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virtual void update (double delta_time_sec);
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/**
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* Redraw the GUI picking up new GUI colors.
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*/
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virtual void redraw ();
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/**
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* Creates a new dialog box, using the same property format as the
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* gui/dialogs configuration files. Does not display the
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* resulting dialog. If a pre-existing dialog of the same name
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* exists, it will be deleted. The node argument will be stored
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* in the GUI subsystem using SGPropertNode_ptr reference counting.
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* It should not be deleted by user code.
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*
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* @param node A property node containing the dialog definition
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*/
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virtual void newDialog (SGPropertyNode* node);
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/**
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* Display a dialog box.
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*
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* At initialization time, the subsystem reads all of the XML
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* configuration files from the directory $FG_ROOT/gui/dialogs/.
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* The configuration for each dialog specifies a name, and this
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* method invokes the dialog with the name specified (if it
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* exists).
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*
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* @param name The name of the dialog box.
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* @return true if the dialog exists, false otherwise.
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*/
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virtual bool showDialog (const std::string &name);
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/**
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* Close the currenty active dialog. This function is intended to
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* be called from code (pui callbacks, for instance) that registers
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* its dialog object as active via setActiveDialog(). Other
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* user-level code should use the closeDialog(name) API.
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*
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* @return true if a dialog was active, false otherwise
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*/
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virtual bool closeActiveDialog ();
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/**
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* Close a named dialog, if it is open.
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*
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* @param name The name of the dialog box.
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* @return true if the dialog was active, false otherwise.
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*/
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virtual bool closeDialog (const std::string &name);
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/**
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* Get dialog property tree's root node.
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* @param name The name of the dialog box.
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* @return node pointer if the dialog was found, zero otherwise.
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*/
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virtual SGPropertyNode_ptr getDialogProperties (const std::string &name);
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/**
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* Return a pointer to the current menubar.
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*/
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virtual FGMenuBar * getMenuBar ();
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/**
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* Ignore this method.
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*
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* This method is for internal use only, but it has to be public
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* so that a non-class callback can see it.
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*/
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virtual void setActiveDialog (FGDialog * dialog);
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/**
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* Get the dialog currently active, if any.
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*
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* @return The active dialog, or 0 if none is active.
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*/
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virtual FGDialog * getActiveDialog ();
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/**
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* Get the named dialog if active.
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*
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* @return The named dialog, or 0 if it isn't active.
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*/
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virtual FGDialog * getDialog (const std::string &name);
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virtual FGColor *getColor (const char * name) const {
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_citt_t it = _colors.find(name);
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return (it != _colors.end()) ? it->second : NULL;
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}
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virtual FGColor *getColor (const std::string &name) const {
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_citt_t it = _colors.find(name.c_str());
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return (it != _colors.end()) ? it->second : NULL;
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}
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virtual puFont *getDefaultFont() { return _font; }
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static const char* subsystemName() { return "gui"; }
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protected:
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/**
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* Test if the menubar is visible.
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*
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* This method exists only for binding.
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*/
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virtual bool getMenuBarVisible () const;
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/**
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* Show or hide the menubar.
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*
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* This method exists only for binding.
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*/
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virtual void setMenuBarVisible (bool visible);
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virtual void setStyle ();
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virtual void setupFont (SGPropertyNode *);
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/**
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* Used by reinit() and redraw() to close all dialogs and to apply
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* current GUI colors. If "reload" is false, reopens all dialogs.
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* Otherwise reloads all XML dialog files from disk and reopens all
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* but Nasal * generated dialogs, omitting dynamic widgets. (This
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* is only useful for GUI development.)
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*/
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virtual void reset (bool reload);
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private:
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void createMenuBarImplementation();
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struct ltstr
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{
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bool operator()(const char* s1, const char* s2) const {
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return strcmp(s1, s2) < 0;
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}
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};
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puFont *_font;
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typedef std::map<const char*,FGColor*, ltstr> ColourDict;
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ColourDict _colors;
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typedef ColourDict::iterator _itt_t;
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typedef ColourDict::const_iterator _citt_t;
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void clear_colors();
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// Read all the configuration files in a directory.
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void readDir (const SGPath& path);
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std::auto_ptr<FGMenuBar> _menubar;
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FGDialog * _active_dialog;
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typedef std::map<std::string,FGDialog *> DialogDict;
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DialogDict _active_dialogs;
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typedef std::map<std::string, SGPath> NamePathDict;
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// mapping from dialog names to the corresponding XML property list
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// which defines them
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NamePathDict _dialog_names;
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// cache of loaded dialog proeprties
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typedef std::map<std::string,SGPropertyNode_ptr> NameDialogDict;
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NameDialogDict _dialog_props;
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};
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#endif // __NEW_GUI_HXX
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