FLTK 1.3.8

Fl.H
Go to the documentation of this file.
1//
2// "$Id$"
3//
4// Main header file for the Fast Light Tool Kit (FLTK).
5//
6// Copyright 1998-2016 by Bill Spitzak and others.
7//
8// This library is free software. Distribution and use rights are outlined in
9// the file "COPYING" which should have been included with this file. If this
10// file is missing or damaged, see the license at:
11//
12// http://www.fltk.org/COPYING.php
13//
14// Please report all bugs and problems on the following page:
15//
16// http://www.fltk.org/str.php
17//
18
23#ifndef Fl_H
24# define Fl_H
25
26#include <FL/Fl_Export.H>
27
28#ifdef FLTK_HAVE_CAIRO
29# include <FL/Fl_Cairo.H>
30#endif
31
32# include "fl_utf8.h"
33# include "Enumerations.H"
34# ifndef Fl_Object
35# define Fl_Object Fl_Widget
36# endif
37
38# ifdef check
39# undef check
40# endif
41
42
43 class Fl_Widget;
44 class Fl_Window;
45 class Fl_Image;
46 struct Fl_Label;
47
48// Keep avoiding having the socket deps at that level but mke sure it will work in both 32 & 64 bit builds
49#if defined(WIN32) && !defined(__CYGWIN__)
50# if defined(_WIN64)
51# define FL_SOCKET unsigned __int64
52# else
53# define FL_SOCKET int
54# endif
55#else
56# define FL_SOCKET int
57#endif
58
59
60// Pointers you can use to change FLTK to a foreign language.
61// Note: Similar pointers are defined in FL/fl_ask.H and src/fl_ask.cxx
62 extern FL_EXPORT const char* fl_local_ctrl;
63 extern FL_EXPORT const char* fl_local_meta;
64 extern FL_EXPORT const char* fl_local_alt;
65 extern FL_EXPORT const char* fl_local_shift;
66
83 typedef void (Fl_Label_Draw_F)(const Fl_Label *label, int x, int y, int w, int h, Fl_Align align);
84
86 typedef void (Fl_Label_Measure_F)(const Fl_Label *label, int &width, int &height);
87
89 typedef void (Fl_Box_Draw_F)(int x, int y, int w, int h, Fl_Color color);
90
92 typedef void (*Fl_Timeout_Handler)(void *data);
93
95 typedef void (*Fl_Awake_Handler)(void *data);
96
98 typedef void (*Fl_Idle_Handler)(void *data);
99
101 typedef void (*Fl_Old_Idle_Handler)();
102
104 typedef void (*Fl_FD_Handler)(FL_SOCKET fd, void *data);
105
107 typedef int (*Fl_Event_Handler)(int event);
108
110 typedef int (*Fl_System_Handler)(void *event, void *data);
111
113 typedef void (*Fl_Abort_Handler)(const char *format,...);
114
116 typedef void (*Fl_Atclose_Handler)(Fl_Window *window, void *data);
117
119 typedef int (*Fl_Args_Handler)(int argc, char **argv, int &i);
120
123 typedef int (*Fl_Event_Dispatch)(int event, Fl_Window *w);
124
126 typedef void (*Fl_Clipboard_Notify_Handler)(int source, void *data);
127 /* group callback_functions */
129
130
135 class FL_EXPORT Fl {
136 Fl() {}; // no constructor!
137
138 private:
139 static int use_high_res_GL_;
140
141 public: // should be private!
142#ifndef FL_DOXYGEN
143 static int e_number;
144 static int e_x;
145 static int e_y;
146 static int e_x_root;
147 static int e_y_root;
148 static int e_dx;
149 static int e_dy;
150 static int e_state;
151 static int e_clicks;
152 static int e_is_click;
153 static int e_keysym;
154 static char* e_text;
155 static int e_length;
156 static void *e_clipboard_data;
157 static const char *e_clipboard_type;
158 static Fl_Event_Dispatch e_dispatch;
159 static Fl_Widget* belowmouse_;
160 static Fl_Widget* pushed_;
161 static Fl_Widget* focus_;
162 static int damage_;
163 static Fl_Widget* selection_owner_;
164 static Fl_Window* modal_;
165 static Fl_Window* grab_;
166 static int compose_state; // used for dead keys (WIN32) or marked text (MacOS)
167 static void call_screen_init(); // recompute screen number and dimensions
168#ifdef __APPLE__
169 static void reset_marked_text(); // resets marked text
170 static void insertion_point_location(int x, int y, int height); // sets window coordinates & height of insertion point
171#endif
172#endif // FL_DOXYGEN
173
174
178 static void damage(int d) {damage_ = d;}
179
180 public:
187 typedef enum {
197 OPTION_ARROW_FOCUS = 0,
198 // When switched on, FLTK will use the file chooser dialog that comes
199 // with your operating system whenever possible. When switched off, FLTK
200 // will present its own file chooser.
201 // \todo implement me
202 // OPTION_NATIVE_FILECHOOSER,
203 // When Filechooser Preview is enabled, the FLTK or native file chooser
204 // will show a preview of a selected file (if possible) before the user
205 // decides to choose the file.
206 // \todo implement me
207 //OPTION_FILECHOOSER_PREVIEW,
212 OPTION_VISIBLE_FOCUS,
216 OPTION_DND_TEXT,
220 OPTION_SHOW_TOOLTIPS,
224 OPTION_FNFC_USES_GTK,
225 // don't change this, leave it always as the last element
227 OPTION_LAST
228 } Fl_Option;
229
230 private:
231 static unsigned char options_[OPTION_LAST];
232 static unsigned char options_read_;
233
234 public:
235 /*
236 Return a global setting for all FLTK applications, possibly overridden
237 by a setting specifically for this application.
238 */
239 static bool option(Fl_Option opt);
240
241 /*
242 Override an option while the application is running.
243 */
244 static void option(Fl_Option opt, bool val);
245
253 static void (*idle)();
254
255#ifndef FL_DOXYGEN
256 static Fl_Awake_Handler *awake_ring_;
257 static void **awake_data_;
258 static int awake_ring_size_;
259 static int awake_ring_head_;
260 static int awake_ring_tail_;
261 static const char* scheme_;
262 static Fl_Image* scheme_bg_;
263
264 static int e_original_keysym; // late addition
265 static int scrollbar_size_;
266#endif
267
268
269 static int add_awake_handler_(Fl_Awake_Handler, void*);
270 static int get_awake_handler_(Fl_Awake_Handler&, void*&);
271
272 public:
273
274 // API version number
275 static double version();
276 static int api_version();
277
278 // ABI version number
279 static int abi_version();
280
303 static inline int abi_check(const int val = FL_ABI_VERSION) {
304 return val == abi_version();
305 }
306
307 // argument parsers:
308 static int arg(int argc, char **argv, int& i);
309 static int args(int argc, char **argv, int& i, Fl_Args_Handler cb = 0);
310 static void args(int argc, char **argv);
315 static const char* const help;
316
317 // things called by initialization:
318 static void display(const char*);
319 static int visual(int);
329 static int gl_visual(int, int *alist=0); // platform dependent
330 static void own_colormap();
331 static void get_system_colors();
332 static void foreground(uchar, uchar, uchar);
333 static void background(uchar, uchar, uchar);
334 static void background2(uchar, uchar, uchar);
335
336 // schemes:
337 static int scheme(const char *name);
339 static const char* scheme() {return scheme_;}
340
368 static int is_scheme(const char *name) {
369 return (scheme_ && name && !strcmp(name,scheme_));
370 }
376 static int reload_scheme(); // platform dependent
377 static int scrollbar_size();
378 static void scrollbar_size(int W);
379
380 // execution:
381 static int wait();
382 static double wait(double time);
383 static int check();
384 static int ready();
385 static int run();
386 static Fl_Widget* readqueue();
417 static void add_timeout(double t, Fl_Timeout_Handler,void* = 0); // platform dependent
438 static void repeat_timeout(double t, Fl_Timeout_Handler, void* = 0); // platform dependent
439 static int has_timeout(Fl_Timeout_Handler, void* = 0);
440 static void remove_timeout(Fl_Timeout_Handler, void* = 0);
441 static void add_check(Fl_Timeout_Handler, void* = 0);
442 static int has_check(Fl_Timeout_Handler, void* = 0);
443 static void remove_check(Fl_Timeout_Handler, void* = 0);
463 static void add_fd(int fd, int when, Fl_FD_Handler cb, void* = 0); // platform dependent
465 static void add_fd(int fd, Fl_FD_Handler cb, void* = 0); // platform dependent
467 static void remove_fd(int, int when); // platform dependent
469 static void remove_fd(int); // platform dependent
470
471 static void add_idle(Fl_Idle_Handler cb, void* data = 0);
472 static int has_idle(Fl_Idle_Handler cb, void* data = 0);
473 static void remove_idle(Fl_Idle_Handler cb, void* data = 0);
475 static int damage() {return damage_;}
476 static void redraw();
477 static void flush();
498 static void (*warning)(const char*, ...);
513 static void (*error)(const char*, ...);
530 static void (*fatal)(const char*, ...);
536 static Fl_Window* first_window();
537 static void first_window(Fl_Window*);
538 static Fl_Window* next_window(const Fl_Window*);
539
549 static Fl_Window* modal() {return modal_;}
555 static Fl_Window* grab() {return grab_;}
580 static void grab(Fl_Window*); // platform dependent
587 // event information:
593 static int event() {return e_number;}
598 static int event_x() {return e_x;}
603 static int event_y() {return e_y;}
610 static int event_x_root() {return e_x_root;}
617 static int event_y_root() {return e_y_root;}
622 static int event_dx() {return e_dx;}
627 static int event_dy() {return e_dy;}
636 static void get_mouse(int &,int &); // platform dependent
645 static int event_clicks() {return e_clicks;}
653 static void event_clicks(int i) {e_clicks = i;}
661 static int event_is_click() {return e_is_click;}
668 static void event_is_click(int i) {e_is_click = i;}
678 static int event_button() {return e_keysym-FL_Button;}
704 static int event_state() {return e_state;}
705
711 static int event_state(int mask) {return e_state&mask;}
723 static int event_key() {return e_keysym;}
732 static int event_original_key(){return e_original_keysym;}
771 static int event_key(int key);
777 static int get_key(int key); // platform dependent
792 static const char* event_text() {return e_text;}
799 static int event_length() {return e_length;}
800
804 static void *event_clipboard() { return e_clipboard_data; }
808 static const char *event_clipboard_type() {return e_clipboard_type; }
809
810
811 static int compose(int &del);
812 static void compose_reset();
813 static int event_inside(int,int,int,int);
814 static int event_inside(const Fl_Widget*);
815 static int test_shortcut(Fl_Shortcut);
816
821 static void enable_im();
826 static void disable_im();
827
828 // event destinations:
829 static int handle(int, Fl_Window*);
830 static int handle_(int, Fl_Window*);
833 static Fl_Widget* belowmouse() {return belowmouse_;}
834 static void belowmouse(Fl_Widget*);
837 static Fl_Widget* pushed() {return pushed_;}
838 static void pushed(Fl_Widget*);
840 static Fl_Widget* focus() {return focus_;}
841 static void focus(Fl_Widget*);
842 static void add_handler(Fl_Event_Handler h);
843 static void remove_handler(Fl_Event_Handler h);
844 static void add_system_handler(Fl_System_Handler h, void *data);
845 static void remove_system_handler(Fl_System_Handler h);
846 static void event_dispatch(Fl_Event_Dispatch d);
847 static Fl_Event_Dispatch event_dispatch();
853 // cut/paste:
869#if FLTK_ABI_VERSION >= 10303 || defined(FL_DOXYGEN)
870 static void copy(const char* stuff, int len, int destination = 0, const char *type = Fl::clipboard_plain_text); // platform dependent
871#else
872 static void copy(const char* stuff, int len, int destination, const char *type);
873 static void copy(const char* stuff, int len, int destination = 0);
874#endif
875
876#if !(defined(__APPLE__) || defined(WIN32) || defined(FL_DOXYGEN))
877 static void copy_image(const unsigned char* data, int W, int H, int destination = 0); // platform dependent
878#endif
917#if FLTK_ABI_VERSION >= 10303 || defined(FL_DOXYGEN)
918 static void paste(Fl_Widget &receiver, int source, const char *type = Fl::clipboard_plain_text); // platform dependent
919#else
920 static void paste(Fl_Widget &receiver, int source, const char *type);
921 static void paste(Fl_Widget &receiver, int source /*=0*/);
922#endif
944 static void add_clipboard_notify(Fl_Clipboard_Notify_Handler h, void *data = 0);
949 static void remove_clipboard_notify(Fl_Clipboard_Notify_Handler h);
953 static int clipboard_contains(const char *type);
956 static char const * const clipboard_plain_text;
959 static char const * const clipboard_image;
960
970 static int dnd(); // platform dependent
971
972 // These are for back-compatibility only:
975 static Fl_Widget* selection_owner() {return selection_owner_;}
976 static void selection_owner(Fl_Widget*);
977 static void selection(Fl_Widget &owner, const char*, int len);
978 static void paste(Fl_Widget &receiver);
983 // screen size:
985 static int x(); // platform dependent
987 static int y(); // platform dependent
989 static int w(); // platform dependent
991 static int h(); // platform dependent
992
993 // multi-head support:
994 static int screen_count();
1000 static void screen_xywh(int &X, int &Y, int &W, int &H) {
1001 int x, y;
1002 Fl::get_mouse(x, y);
1003 screen_xywh(X, Y, W, H, x, y);
1004 }
1005 static void screen_xywh(int &X, int &Y, int &W, int &H, int mx, int my);
1006 static void screen_xywh(int &X, int &Y, int &W, int &H, int n);
1007 static void screen_xywh(int &X, int &Y, int &W, int &H, int mx, int my, int mw, int mh);
1008 static int screen_num(int x, int y);
1009 static int screen_num(int x, int y, int w, int h);
1010 static void screen_dpi(float &h, float &v, int n=0);
1011 static void screen_work_area(int &X, int &Y, int &W, int &H, int mx, int my);
1012 static void screen_work_area(int &X, int &Y, int &W, int &H, int n);
1018 static void screen_work_area(int &X, int &Y, int &W, int &H) {
1019 int x, y;
1020 Fl::get_mouse(x, y);
1021 screen_work_area(X, Y, W, H, x, y);
1022 }
1023
1031 // color map:
1032 static void set_color(Fl_Color, uchar, uchar, uchar);
1037 static void set_color(Fl_Color i, unsigned c); // platform dependent
1038 static unsigned get_color(Fl_Color i);
1039 static void get_color(Fl_Color i, uchar &red, uchar &green, uchar &blue);
1045 static void free_color(Fl_Color i, int overlay = 0); // platform dependent
1046
1047 // fonts:
1048 static const char* get_font(Fl_Font);
1061 static const char* get_font_name(Fl_Font, int* attributes = 0);
1073 static int get_font_sizes(Fl_Font, int*& sizep);
1074 static void set_font(Fl_Font, const char*);
1075 static void set_font(Fl_Font, Fl_Font);
1094 static Fl_Font set_fonts(const char* = 0); // platform dependent
1095
1102 // <Hack to re-order the 'Drawing functions' group>
1105 // labeltypes:
1106 static void set_labeltype(Fl_Labeltype,Fl_Label_Draw_F*,Fl_Label_Measure_F*);
1108 static void set_labeltype(Fl_Labeltype, Fl_Labeltype from); // is it defined ?
1109
1110 // boxtypes:
1111 static Fl_Box_Draw_F *get_boxtype(Fl_Boxtype);
1112 static void set_boxtype(Fl_Boxtype, Fl_Box_Draw_F*,uchar,uchar,uchar,uchar);
1113 static void set_boxtype(Fl_Boxtype, Fl_Boxtype from);
1114 static int box_dx(Fl_Boxtype);
1115 static int box_dy(Fl_Boxtype);
1116 static int box_dw(Fl_Boxtype);
1117 static int box_dh(Fl_Boxtype);
1118
1119 static int draw_box_active();
1120 static Fl_Color box_color(Fl_Color);
1121 static void set_box_color(Fl_Color);
1122
1123 // back compatibility:
1127 static void set_abort(Fl_Abort_Handler f) {fatal = f;}
1128 static void (*atclose)(Fl_Window*,void*);
1129 static void default_atclose(Fl_Window*,void*);
1133 static void set_atclose(Fl_Atclose_Handler f) {atclose = f;}
1139 static int event_shift() {return e_state&FL_SHIFT;}
1141 static int event_ctrl() {return e_state&FL_CTRL;}
1143 static int event_command() {return e_state&FL_COMMAND;}
1145 static int event_alt() {return e_state&FL_ALT;}
1154 static int event_buttons() {return e_state&0x7f000000;}
1159 static int event_button1() {return e_state&FL_BUTTON1;}
1164 static int event_button2() {return e_state&FL_BUTTON2;}
1169 static int event_button3() {return e_state&FL_BUTTON3;}
1177 static void set_idle(Fl_Old_Idle_Handler cb) {idle = cb;}
1179 static void grab(Fl_Window& win) {grab(&win);}
1183 static void release() {grab(0);}
1184
1185 // Visible focus methods...
1191 static void visible_focus(int v) { option(OPTION_VISIBLE_FOCUS, (v!=0)); }
1197 static int visible_focus() { return option(OPTION_VISIBLE_FOCUS); }
1198
1199 // Drag-n-drop text operation methods...
1206 static void dnd_text_ops(int v) { option(OPTION_DND_TEXT, (v!=0)); }
1213 static int dnd_text_ops() { return option(OPTION_DND_TEXT); }
1218 // Multithreading support:
1219 static int lock();
1220 static void unlock();
1221 static void awake(void* message = 0);
1223 static int awake(Fl_Awake_Handler cb, void* message = 0);
1230 static void* thread_message(); // platform dependent
1262 // Widget deletion:
1263 static void delete_widget(Fl_Widget *w);
1264 static void do_widget_deletion();
1265 static void watch_widget_pointer(Fl_Widget *&w);
1266 static void release_widget_pointer(Fl_Widget *&w);
1267 static void clear_widget_pointer(Fl_Widget const *w);
1274 static void use_high_res_GL(int val) { use_high_res_GL_ = val; }
1280 static int use_high_res_GL() { return use_high_res_GL_; }
1281
1282#ifdef FLTK_HAVE_CAIRO
1286 public:
1287 // Cairo support API
1288 static cairo_t * cairo_make_current(Fl_Window* w);
1303 static void cairo_autolink_context(bool alink) {cairo_state_.autolink(alink);}
1311 static bool cairo_autolink_context() {return cairo_state_.autolink();}
1313 static cairo_t * cairo_cc() { return cairo_state_.cc(); }
1318 static void cairo_cc(cairo_t * c, bool own=false){ cairo_state_.cc(c, own); }
1319
1320 private:
1321 static cairo_t * cairo_make_current(void* gc);
1322 static cairo_t * cairo_make_current(void* gc, int W, int H);
1323 static Fl_Cairo_State cairo_state_;
1324 public:
1327#endif // FLTK_HAVE_CAIRO
1328
1329};
1330
1371 class FL_EXPORT Fl_Widget_Tracker {
1372
1373 Fl_Widget* wp_;
1374
1375 public:
1376
1377 Fl_Widget_Tracker(Fl_Widget *wi);
1378 ~Fl_Widget_Tracker();
1379
1385 Fl_Widget *widget() {return wp_;}
1386
1396 int deleted() {return wp_ == 0;}
1397
1407 int exists() {return wp_ != 0;}
1408
1409};
1410
1416#endif // !Fl_H
1417
1418//
1419// End of "$Id$".
1420//
Enumerations.H
This file contains type definitions and general enumerations.
FL_BUTTON2
#define FL_BUTTON2
Mouse button 2 is pushed.
Definition: Enumerations.H:566
FL_Button
#define FL_Button
A mouse button; use Fl_Button + n for mouse button n.
Definition: Enumerations.H:465
FL_CTRL
#define FL_CTRL
One of the ctrl keys is down.
Definition: Enumerations.H:557
Fl_Font
int Fl_Font
A font number is an index into the internal font table.
Definition: Enumerations.H:875
Fl_Align
unsigned Fl_Align
FLTK type for alignment control.
Definition: Enumerations.H:826
FL_ALT
#define FL_ALT
One of the alt keys is down.
Definition: Enumerations.H:558
FL_COMMAND
#define FL_COMMAND
An alias for FL_CTRL on WIN32 and X11, or FL_META on MacOS X.
Definition: Enumerations.H:578
FL_ABI_VERSION
#define FL_ABI_VERSION
The FLTK ABI (Application Binary Interface) version number as an int.
Definition: Enumerations.H:181
Fl_Color
unsigned int Fl_Color
An FLTK color value; see also Colors
Definition: Enumerations.H:932
FL_BUTTON3
#define FL_BUTTON3
Mouse button 3 is pushed.
Definition: Enumerations.H:567
FL_SHIFT
#define FL_SHIFT
One of the shift keys is down.
Definition: Enumerations.H:555
Fl_Labeltype
Fl_Labeltype
The labeltype() method sets the type of the label.
Definition: Enumerations.H:761
Fl_Boxtype
Fl_Boxtype
Definition: Enumerations.H:601
FL_BUTTON1
#define FL_BUTTON1
Mouse button 1 is pushed.
Definition: Enumerations.H:565
fl_local_meta
FL_EXPORT const char * fl_local_meta
string pointer used in shortcuts, you can change it to another language
Definition: Fl.cxx:97
fl_local_shift
FL_EXPORT const char * fl_local_shift
string pointer used in shortcuts, you can change it to another language
Definition: Fl.cxx:98
fl_local_ctrl
FL_EXPORT const char * fl_local_ctrl
string pointer used in shortcuts, you can change it to another language
Definition: Fl.cxx:96
fl_local_alt
FL_EXPORT const char * fl_local_alt
string pointer used in shortcuts, you can change it to another language
Definition: Fl.cxx:95
Fl_Cairo_State
Contains all the necessary info on the current cairo context.
Definition: Fl_Cairo.H:46
Fl_Image
Base class for image caching and drawing.
Definition: Fl_Image.H:55
Fl_Widget_Tracker
This class should be used to control safe widget deletion.
Definition: Fl.H:1371
Fl_Widget_Tracker::exists
int exists()
Returns 1, if the watched widget exists (has not been deleted).
Definition: Fl.H:1407
Fl_Widget_Tracker::deleted
int deleted()
Returns 1, if the watched widget has been deleted.
Definition: Fl.H:1396
Fl_Widget_Tracker::widget
Fl_Widget * widget()
Returns a pointer to the watched widget.
Definition: Fl.H:1385
Fl_Widget
Fl_Widget is the base class for all widgets in FLTK.
Definition: Fl_Widget.H:101
Fl_Window
This widget produces an actual window.
Definition: Fl_Window.H:57
Fl
The Fl is the FLTK global (static) class containing state information and global methods for the curr...
Definition: Fl.H:135
Fl::is_scheme
static int is_scheme(const char *name)
Returns whether the current scheme is the given name.
Definition: Fl.H:368
Fl::remove_fd
static void remove_fd(int, int when)
Removes a file descriptor handler.
Fl::scheme
static const char * scheme()
See void scheme(const char *name)
Definition: Fl.H:339
Fl::use_high_res_GL
static void use_high_res_GL(int val)
sets whether GL windows should be drawn at high resolution on Apple computers with retina displays
Definition: Fl.H:1274
Fl::remove_fd
static void remove_fd(int)
Removes a file descriptor handler.
Fl::OPTION_FNFC_USES_GTK
@ OPTION_FNFC_USES_GTK
When switched on (default), Fl_Native_File_Chooser runs GTK file dialogs if the GTK library is availa...
Definition: Fl.H:224
Fl::OPTION_DND_TEXT
@ OPTION_DND_TEXT
If text drag-and-drop is enabled (default), the user can select and drag text from any text widget.
Definition: Fl.H:216
Fl::OPTION_VISIBLE_FOCUS
@ OPTION_VISIBLE_FOCUS
If visible focus is switched on (default), FLTK will draw a dotted rectangle inside the widget that w...
Definition: Fl.H:212
Fl::OPTION_SHOW_TOOLTIPS
@ OPTION_SHOW_TOOLTIPS
If tooltips are enabled (default), hovering the mouse over a widget with a tooltip text will open a l...
Definition: Fl.H:220
Fl::damage
static void damage(int d)
If true then flush() will do something.
Definition: Fl.H:178
Fl::dnd_text_ops
static void dnd_text_ops(int v)
Gets or sets whether drag and drop text operations are supported.
Definition: Fl.H:1206
Fl::help
static const char *const help
Usage string displayed if Fl::args() detects an invalid argument.
Definition: Fl.H:315
Fl::release
static void release()
Releases the current grabbed window, equals grab(0).
Definition: Fl.H:1183
Fl::set_idle
static void set_idle(Fl_Old_Idle_Handler cb)
Sets an idle callback.
Definition: Fl.H:1177
Fl::add_fd
static void add_fd(int fd, int when, Fl_FD_Handler cb, void *=0)
Adds file descriptor fd to listen to.
Fl::use_high_res_GL
static int use_high_res_GL()
returns whether GL windows should be drawn at high resolution on Apple computers with retina displays...
Definition: Fl.H:1280
Fl::dnd_text_ops
static int dnd_text_ops()
Gets or sets whether drag and drop text operations are supported.
Definition: Fl.H:1213
Fl::grab
static void grab(Fl_Window &win)
See grab(Fl_Window*)
Definition: Fl.H:1179
Fl::damage
static int damage()
If true then flush() will do something.
Definition: Fl.H:475
Fl::set_labeltype
static void set_labeltype(Fl_Labeltype, Fl_Labeltype from)
Sets the functions to call to draw and measure a specific labeltype.
Fl::add_fd
static void add_fd(int fd, Fl_FD_Handler cb, void *=0)
See void add_fd(int fd, int when, Fl_FD_Handler cb, void* = 0)
Fl::visible_focus
static void visible_focus(int v)
Gets or sets the visible keyboard focus on buttons and other non-text widgets.
Definition: Fl.H:1191
Fl::visible_focus
static int visible_focus()
Gets or sets the visible keyboard focus on buttons and other non-text widgets.
Definition: Fl.H:1197
Fl::abi_check
static int abi_check(const int val=FL_ABI_VERSION)
Returns whether the runtime library ABI version is correct.
Definition: Fl.H:303
Fl_Shortcut
unsigned int Fl_Shortcut
24-bit Unicode character + 8-bit indicator for keyboard flags
Definition: fl_types.h:46
uchar
unsigned char uchar
unsigned char
Definition: fl_types.h:30
fl_utf8.h
header for Unicode and UTF-8 character handling
Fl_System_Handler
int(* Fl_System_Handler)(void *event, void *data)
Signature of add_system_handler functions passed as parameters.
Definition: Fl.H:110
Fl_Timeout_Handler
void(* Fl_Timeout_Handler)(void *data)
Signature of some timeout callback functions passed as parameters.
Definition: Fl.H:92
Fl_Event_Handler
int(* Fl_Event_Handler)(int event)
Signature of add_handler functions passed as parameters.
Definition: Fl.H:107
Fl_Old_Idle_Handler
void(* Fl_Old_Idle_Handler)()
Signature of set_idle callback functions passed as parameters.
Definition: Fl.H:101
Fl_Awake_Handler
void(* Fl_Awake_Handler)(void *data)
Signature of some wakeup callback functions passed as parameters.
Definition: Fl.H:95
Fl_FD_Handler
void(* Fl_FD_Handler)(FL_SOCKET fd, void *data)
Signature of add_fd functions passed as parameters.
Definition: Fl.H:104
Fl_Event_Dispatch
int(* Fl_Event_Dispatch)(int event, Fl_Window *w)
Signature of event_dispatch functions passed as parameters.
Definition: Fl.H:123
Fl_Label_Draw_F
void() Fl_Label_Draw_F(const Fl_Label *label, int x, int y, int w, int h, Fl_Align align)
Signature of some label drawing functions passed as parameters.
Definition: Fl.H:83
Fl_Args_Handler
int(* Fl_Args_Handler)(int argc, char **argv, int &i)
Signature of args functions passed as parameters.
Definition: Fl.H:119
Fl_Label_Measure_F
void() Fl_Label_Measure_F(const Fl_Label *label, int &width, int &height)
Signature of some label measurement functions passed as parameters.
Definition: Fl.H:86
Fl_Abort_Handler
void(* Fl_Abort_Handler)(const char *format,...)
Signature of set_abort functions passed as parameters.
Definition: Fl.H:113
Fl_Atclose_Handler
void(* Fl_Atclose_Handler)(Fl_Window *window, void *data)
Signature of set_atclose functions passed as parameters.
Definition: Fl.H:116
Fl_Idle_Handler
void(* Fl_Idle_Handler)(void *data)
Signature of add_idle callback functions passed as parameters.
Definition: Fl.H:98
Fl_Box_Draw_F
void() Fl_Box_Draw_F(int x, int y, int w, int h, Fl_Color color)
Signature of some box drawing functions passed as parameters.
Definition: Fl.H:89
Fl_Clipboard_Notify_Handler
void(* Fl_Clipboard_Notify_Handler)(int source, void *data)
Signature of add_clipboard_notify functions passed as parameters.
Definition: Fl.H:126
Fl::paste
static void paste(Fl_Widget &receiver, int source, const char *type=Fl::clipboard_plain_text)
Pastes the data from the selection buffer (source is 0) or the clipboard (source is 1) into receiver.
Fl::copy
static void copy(const char *stuff, int len, int destination=0, const char *type=Fl::clipboard_plain_text)
Copies the data pointed to by stuff to the selection buffer (destination is 0), the clipboard (destin...
Fl::clipboard_image
static char const *const clipboard_image
Denotes image data.
Definition: Fl.H:959
Fl::selection_owner
static Fl_Widget * selection_owner()
back-compatibility only: Gets the widget owning the current selection
Definition: Fl.H:975
Fl::clipboard_plain_text
static char const *const clipboard_plain_text
Denotes plain textual data.
Definition: Fl.H:956
Fl::clipboard_contains
static int clipboard_contains(const char *type)
Returns non 0 if the clipboard contains data matching type.
Fl::event_clicks
static void event_clicks(int i)
Manually sets the number returned by Fl::event_clicks().
Definition: Fl.H:653
Fl::event_is_click
static void event_is_click(int i)
Clears the value returned by Fl::event_is_click().
Definition: Fl.H:668
Fl::event_y
static int event_y()
Returns the mouse position of the event relative to the Fl_Window it was passed to.
Definition: Fl.H:603
Fl::event_key
static int event_key()
Gets which key on the keyboard was last pushed.
Definition: Fl.H:723
Fl::event_alt
static int event_alt()
Returns non-zero if the Alt key is pressed.
Definition: Fl.H:1145
Fl::focus
static Fl_Widget * focus()
Gets the current Fl::focus() widget.
Definition: Fl.H:840
Fl::event_length
static int event_length()
Returns the length of the text in Fl::event_text().
Definition: Fl.H:799
Fl::event_state
static int event_state(int mask)
Returns non-zero if any of the passed event state bits are turned on.
Definition: Fl.H:711
Fl::event_dy
static int event_dy()
Returns the current vertical mouse scrolling associated with the FL_MOUSEWHEEL event.
Definition: Fl.H:627
Fl::event_x_root
static int event_x_root()
Returns the mouse position on the screen of the event.
Definition: Fl.H:610
Fl::pushed
static Fl_Widget * pushed()
Gets the widget that is being pushed.
Definition: Fl.H:837
Fl::event_clipboard_type
static const char * event_clipboard_type()
Returns the type of the pasted data during an FL_PASTE event.
Definition: Fl.H:808
Fl::event_button1
static int event_button1()
Returns non-zero if mouse button 1 is currently held down.
Definition: Fl.H:1159
Fl::event_button3
static int event_button3()
Returns non-zero if button 3 is currently held down.
Definition: Fl.H:1169
Fl::event_command
static int event_command()
Returns non-zero if the FL_COMMAND key is pressed, either FL_CTRL or on OSX FL_META.
Definition: Fl.H:1143
Fl::disable_im
static void disable_im()
Disables the system input methods facilities.
Fl::get_mouse
static void get_mouse(int &, int &)
Return where the mouse is on the screen by doing a round-trip query to the server.
Fl::event_button
static int event_button()
Gets which particular mouse button caused the current event.
Definition: Fl.H:678
Fl::event_x
static int event_x()
Returns the mouse position of the event relative to the Fl_Window it was passed to.
Definition: Fl.H:598
Fl::enable_im
static void enable_im()
Enables the system input methods facilities.
Fl::event_y_root
static int event_y_root()
Returns the mouse position on the screen of the event.
Definition: Fl.H:617
Fl::event_clipboard
static void * event_clipboard()
During an FL_PASTE event of non-textual data, returns a pointer to the pasted data.
Definition: Fl.H:804
Fl::event_shift
static int event_shift()
Returns non-zero if the Shift key is pressed.
Definition: Fl.H:1139
Fl::event
static int event()
Returns the last event that was processed.
Definition: Fl.H:593
Fl::event_ctrl
static int event_ctrl()
Returns non-zero if the Control key is pressed.
Definition: Fl.H:1141
Fl::belowmouse
static Fl_Widget * belowmouse()
Gets the widget that is below the mouse.
Definition: Fl.H:833
Fl::event_button2
static int event_button2()
Returns non-zero if button 2 is currently held down.
Definition: Fl.H:1164
Fl::event_dx
static int event_dx()
Returns the current horizontal mouse scrolling associated with the FL_MOUSEWHEEL event.
Definition: Fl.H:622
Fl::event_original_key
static int event_original_key()
Returns the keycode of the last key event, regardless of the NumLock state.
Definition: Fl.H:732
Fl::event_is_click
static int event_is_click()
Returns non-zero if the mouse has not moved far enough and not enough time has passed since the last ...
Definition: Fl.H:661
Fl::event_text
static const char * event_text()
Returns the text associated with the current event, including FL_PASTE or FL_DND_RELEASE events.
Definition: Fl.H:792
Fl::event_buttons
static int event_buttons()
Returns the mouse buttons state bits; if non-zero, then at least one button is pressed now.
Definition: Fl.H:1154
Fl::event_state
static int event_state()
Returns the keyboard and mouse button states of the last event.
Definition: Fl.H:704
Fl::event_clicks
static int event_clicks()
Returns non zero if we had a double click event.
Definition: Fl.H:645
Fl::h
static int h()
Returns the height in pixels of the main screen work area.
Fl::x
static int x()
Returns the leftmost x coordinate of the main screen work area.
Fl::w
static int w()
Returns the width in pixels of the main screen work area.
Fl::screen_xywh
static void screen_xywh(int &X, int &Y, int &W, int &H)
Gets the bounding box of a screen that contains the mouse pointer.
Definition: Fl.H:1000
Fl::y
static int y()
Returns the topmost y coordinate of the main screen work area.
Fl::screen_work_area
static void screen_work_area(int &X, int &Y, int &W, int &H)
Gets the bounding box of the work area of the screen that contains the mouse pointer.
Definition: Fl.H:1018
Fl::modal
static Fl_Window * modal()
Returns the top-most modal() window currently shown.
Definition: Fl.H:549
Fl::set_abort
static void set_abort(Fl_Abort_Handler f)
For back compatibility, sets the void Fl::fatal handler callback.
Definition: Fl.H:1127
Fl::grab
static Fl_Window * grab()
Returns the window that currently receives all events.
Definition: Fl.H:555
Fl::set_atclose
static void set_atclose(Fl_Atclose_Handler f)
For back compatibility, sets the Fl::atclose handler callback.
Definition: Fl.H:1133
Fl::cairo_cc
static cairo_t * cairo_cc()
Gets the current cairo context linked with a fltk window.
Definition: Fl.H:1313
Fl::cairo_cc
static void cairo_cc(cairo_t *c, bool own=false)
Sets the current cairo context to c.
Definition: Fl.H:1318
Fl::cairo_autolink_context
static bool cairo_autolink_context()
Gets the current autolink mode for cairo support.
Definition: Fl.H:1311
Fl::cairo_autolink_context
static void cairo_autolink_context(bool alink)
when FLTK_HAVE_CAIRO is defined and cairo_autolink_context() is true, any current window dc is linked...
Definition: Fl.H:1303
Fl_Label
This struct stores all information for a text or mixed graphics label.
Definition: Fl_Widget.H:65
Fl_Label::color
Fl_Color color
text color
Definition: Fl_Widget.H:77
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