FLTK三个版本源码及测试例子

// // "$Id: Fl.H 8548 2011-03-30 12:07:52Z AlbrechtS $" // // Main header file for the Fast Light Tool Kit (FLTK). // // Copyright 1998-2010 by Bill Spitzak and others. // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 // USA. // // Please report all bugs and problems on the following page: // // http://www.fltk.org/str.php // /** \file Fl static class. */ #ifndef Fl_H # define Fl_H #ifdef FLTK_HAVE_CAIRO # include <FL/Fl_Cairo.H> #endif # include "fl_utf8.h" # include "Enumerations.H" # ifndef Fl_Object # define Fl_Object Fl_Widget /**< for back compatibility - use Fl_Widget! */ # endif # ifdef check # undef check # endif class Fl_Widget; class Fl_Window; class Fl_Image; struct Fl_Label; /** \defgroup callback_functions Callback function typedefs \brief Typedefs defined in <FL/Fl.H> for callback or handler functions passed as function parameters. FLTK uses callback functions as parameters for some function calls, e.g. to set up global event handlers (Fl::add_handler()), to add a timeout handler (Fl::add_timeout()), and many more. The typedefs defined in this group describe the function parameters used to set up or clear the callback functions and should also be referenced to define the callback function to handle such events in the user's code. \see Fl::add_handler(), Fl::add_timeout(), Fl::repeat_timeout(), Fl::remove_timeout() and others @{ */ /** Signature of some label drawing functions passed as parameters */ typedef void (Fl_Label_Draw_F)(const Fl_Label *label, int x, int y, int w, int h, Fl_Align align); /** Signature of some label measurement functions passed as parameters */ typedef void (Fl_Label_Measure_F)(const Fl_Label *label, int &width, int &height); /** Signature of some box drawing functions passed as parameters */ typedef void (Fl_Box_Draw_F)(int x, int y, int w, int h, Fl_Color color); /** Signature of some timeout callback functions passed as parameters */ typedef void (*Fl_Timeout_Handler)(void *data); /** Signature of some wakeup callback functions passed as parameters */ typedef void (*Fl_Awake_Handler)(void *data); /** Signature of add_idle callback functions passed as parameters */ typedef void (*Fl_Idle_Handler)(void *data); /** Signature of set_idle callback functions passed as parameters */ typedef void (*Fl_Old_Idle_Handler)(); /** Signature of add_fd functions passed as parameters */ typedef void (*Fl_FD_Handler)(int fd, void *data); /** Signature of add_handler functions passed as parameters */ typedef int (*Fl_Event_Handler)(int event); /** Signature of set_abort functions passed as parameters */ typedef void (*Fl_Abort_Handler)(const char *format,...); /** Signature of set_atclose functions passed as parameters */ typedef void (*Fl_Atclose_Handler)(Fl_Window *window, void *data); /** Signature of args functions passed as parameters */ typedef int (*Fl_Args_Handler)(int argc, char **argv, int &i); /** Signature of event_dispatch functions passed as parameters. \see Fl::event_dispatch(Fl_Event_Dispatch) */ typedef int (*Fl_Event_Dispatch)(int event, Fl_Window *w); /** @} */ /* group callback_functions */ /** The Fl is the FLTK global (static) class containing state information and global methods for the current application. */ class FL_EXPORT Fl { Fl() {}; // no constructor! public: // should be private! #ifndef FL_DOXYGEN static int e_number; static int e_x; static int e_y; static int e_x_root; static int e_y_root; static int e_dx; static int e_dy; static int e_state; static int e_clicks; static int e_is_click; static int e_keysym; static char* e_text; static int e_length; static Fl_Event_Dispatch e_dispatch; static Fl_Widget* belowmouse_; static Fl_Widget* pushed_; static Fl_Widget* focus_; static int damage_; static Fl_Widget* selection_owner_; static Fl_Window* modal_; static Fl_Window* grab_; static int compose_state; #endif /** If true then flush() will do something. */ static void damage(int d) {damage_ = d;} public: /** Enumerator for global FLTK options. These options can be set system wide, per user, or for the running application only. \see Fl::option(Fl_Option, bool) \see Fl::option(Fl_Option) */ typedef enum { /// When switched on, moving the text cursor beyond the start or end of /// a text in a text widget will change focus to the next text widget. /// When switched off, the cursor will stop at the end of the text. /// Pressing Tab or Ctrl-Tab will advance the keyboard focus. OPTION_ARROW_FOCUS = 0, // When switched on, FLTK will use the file chooser dialog that comes // with your operating system whenever possible. When switched off, FLTK // will present its own file chooser. // \todo implement me // OPTION_NATIVE_FILECHOOSER, // When Filechooser Preview is enabled, the FLTK or native file chooser // will show a preview of a selected file (if possible) before the user // decides to choose the file. // \todo implement me //OPTION_FILECHOOSER_PREVIEW, /// If visible focus is switched on, FLTK will draw a dotted rectangle /// inside the widget that will receive the next keystroke. If switched /// off, no such indicator will be drawn and keyboard navigation /// is disabled. OPTION_VISIBLE_FOCUS, /// If text drag-and-drop is enabled, the user can select and drag text /// from any text widget. If disabled, no dragging is possible, however /// dropping text from other applications still works. OPTION_DND_TEXT, /// If tooltips are enabled, hovering the mouse over a widget with a /// tooltip text will open a little tooltip window until the mouse leaves /// the widget. If disabled, no tooltip is shown. OPTION_SHOW_TOOLTIPS, // don't change this, leave it always as the last element /// For internal use only. OPTION_LAST } Fl_Option; private: static unsigned char options_[OPTION_LAST]; static unsigned char options_read_; public: /* Return a global setting for all FLTK applications, possibly overridden by a setting specifically for this application. */ static bool option(Fl_Option opt); /* Override an option while the application is running. */ static void option(Fl_Option opt, bool val); /** The currently executing idle callback function: DO NOT USE THIS DIRECTLY! This is now used as part of a higher level system allowing multiple idle callback functions to be called. \see add_idle(), remove_idle() */ static void (*idle)(); #ifndef FL_DOXYGEN static Fl_Awake_Handler *awake_ring_; static void **awake_data_; static int awake_ring_size_; static int awake_ring_head_; static int awake_ring_tail_; static const char* scheme_; static Fl_Image* scheme_bg_; static int e_original_keysym; // late addition static int scrollbar_size_; #endif static int add_awake_handler_(Fl_Awake_Handler, void*); static int get_awake_handler_(Fl_Awake_Handler&, void*&); public: // API version number static double version(); // argument parsers: static int arg(int argc, char **argv, int& i); static int args(int argc