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diff -up fltk-1.3.2/FL/Fl.H.xhandlers fltk-1.3.2/FL/Fl.H
--- fltk-1.3.2/FL/Fl.H.xhandlers 2014-07-22 15:23:18.087334467 +0200
+++ fltk-1.3.2/FL/Fl.H 2014-07-22 15:23:18.094334589 +0200
@@ -96,6 +96,9 @@ typedef void (*Fl_FD_Handler)(FL_SOCKET
/** Signature of add_handler functions passed as parameters */
typedef int (*Fl_Event_Handler)(int event);
+/** Signature of add_system_handler functions passed as parameters */
+typedef int (*Fl_System_Handler)(void *event, void *data);
+
/** Signature of set_abort functions passed as parameters */
typedef void (*Fl_Abort_Handler)(const char *format,...);
@@ -712,6 +715,8 @@ public:
static void focus(Fl_Widget*);
static void add_handler(Fl_Event_Handler h);
static void remove_handler(Fl_Event_Handler h);
+ static void add_system_handler(Fl_System_Handler h, void *data);
+ static void remove_system_handler(Fl_System_Handler h);
static void event_dispatch(Fl_Event_Dispatch d);
static Fl_Event_Dispatch event_dispatch();
/** @} */
diff -up fltk-1.3.2/src/Fl_cocoa.mm.xhandlers fltk-1.3.2/src/Fl_cocoa.mm
--- fltk-1.3.2/src/Fl_cocoa.mm.xhandlers 2014-07-22 15:23:18.089334502 +0200
+++ fltk-1.3.2/src/Fl_cocoa.mm 2014-07-22 15:23:18.095334607 +0200
@@ -1269,6 +1269,8 @@ void fl_open_callback(void (*cb)(const c
}
@end
+extern int fl_send_system_handlers(void *e);
+
static void clipboard_check(void);
@implementation FLApplication
@@ -1276,6 +1278,10 @@ static void clipboard_check(void);
{
// update clipboard status
clipboard_check();
+
+ if (fl_send_system_handlers(theEvent))
+ return;
+
NSEventType type = [theEvent type];
if (type == NSLeftMouseDown) {
fl_lock_function();
diff -up fltk-1.3.2/src/Fl.cxx.xhandlers fltk-1.3.2/src/Fl.cxx
--- fltk-1.3.2/src/Fl.cxx.xhandlers 2014-07-22 15:23:18.085334432 +0200
+++ fltk-1.3.2/src/Fl.cxx 2014-07-22 15:23:18.095334607 +0200
@@ -891,6 +891,83 @@ static int send_handlers(int e) {
return 0;
}
+
+////////////////////////////////////////////////////////////////
+// System event handlers:
+
+
+struct system_handler_link {
+ Fl_System_Handler handle;
+ void *data;
+ system_handler_link *next;
+};
+
+
+static system_handler_link *sys_handlers = 0;
+
+
+/**
+ \brief Install a function to intercept system events.
+
+ FLTK calls each of these functions as soon as a new system event is
+ received. The processing will stop at the first function to return
+ non-zero. If all functions return zero then the event is passed on
+ for normal handling by FLTK.
+
+ Each function will be called with a pointer to the system event as
+ the first argument and \p data as the second argument. The system
+ event pointer will always be void *, but will point to different
+ objects depending on the platform:
+ - X11: XEvent
+ - Windows: MSG
+ - OS X: NSEvent
+
+ \param ha The event handler function to register
+ \param data User data to include on each call
+
+ \see Fl::remove_system_handler(Fl_System_Handler)
+*/
+void Fl::add_system_handler(Fl_System_Handler ha, void *data) {
+ system_handler_link *l = new system_handler_link;
+ l->handle = ha;
+ l->data = data;
+ l->next = sys_handlers;
+ sys_handlers = l;
+}
+
+
+/**
+ Removes a previously added system event handler.
+
+ \param ha The event handler function to remove
+
+ \see Fl::add_system_handler(Fl_System_Handler)
+*/
+void Fl::remove_system_handler(Fl_System_Handler ha) {
+ system_handler_link *l, *p;
+
+ // Search for the handler in the list...
+ for (l = sys_handlers, p = 0; l && l->handle != ha; p = l, l = l->next);
+
+ if (l) {
+ // Found it, so remove it from the list...
+ if (p) p->next = l->next;
+ else sys_handlers = l->next;
+
+ // And free the record...
+ delete l;
+ }
+}
+
+int fl_send_system_handlers(void *e) {
+ for (const system_handler_link *hl = sys_handlers; hl; hl = hl->next) {
+ if (hl->handle(e, hl->data))
+ return 1;
+ }
+ return 0;
+}
+
+
////////////////////////////////////////////////////////////////
Fl_Widget* fl_oldfocus; // kludge for Fl_Group...
diff -up fltk-1.3.2/src/Fl_win32.cxx.xhandlers fltk-1.3.2/src/Fl_win32.cxx
--- fltk-1.3.2/src/Fl_win32.cxx.xhandlers 2014-07-22 15:23:18.092334554 +0200
+++ fltk-1.3.2/src/Fl_win32.cxx 2014-07-22 15:24:44.682843610 +0200
@@ -336,6 +336,8 @@ void* Fl::thread_message() {
return r;
}
+extern int fl_send_system_handlers(void *e);
+
IActiveIMMApp *fl_aimm = NULL;
MSG fl_msg;
@@ -401,26 +403,25 @@ int fl_wait(double time_to_wait) {
// Execute the message we got, and all other pending messages:
// have_message = PeekMessage(&fl_msg, NULL, 0, 0, PM_REMOVE);
- have_message = PeekMessageW(&fl_msg, NULL, 0, 0, PM_REMOVE);
- if (have_message > 0) {
- while (have_message != 0 && have_message != -1) {
- // Let applications treat WM_QUIT identical to SIGTERM on *nix
- if (fl_msg.message == WM_QUIT)
- raise(SIGTERM);
- if (fl_msg.message == fl_wake_msg) {
- // Used for awaking wait() from another thread
- thread_message_ = (void*)fl_msg.wParam;
- Fl_Awake_Handler func;
- void *data;
- while (Fl::get_awake_handler_(func, data)==0) {
- func(data);
- }
- }
-
- TranslateMessage(&fl_msg);
- DispatchMessageW(&fl_msg);
- have_message = PeekMessageW(&fl_msg, NULL, 0, 0, PM_REMOVE);
+ while ((have_message = PeekMessageW(&fl_msg, NULL, 0, 0, PM_REMOVE)) > 0) {
+ if (fl_send_system_handlers(&fl_msg))
+ continue;
+
+ // Let applications treat WM_QUIT identical to SIGTERM on *nix
+ if (fl_msg.message == WM_QUIT)
+ raise(SIGTERM);
+
+ if (fl_msg.message == fl_wake_msg) {
+ // Used for awaking wait() from another thread
+ thread_message_ = (void*)fl_msg.wParam;
+ Fl_Awake_Handler func;
+ void *data;
+ while (Fl::get_awake_handler_(func, data)==0)
+ func(data);
}
+
+ TranslateMessage(&fl_msg);
+ DispatchMessageW(&fl_msg);
}
Fl::flush();
diff -up fltk-1.3.2/src/Fl_x.cxx.xhandlers fltk-1.3.2/src/Fl_x.cxx
--- fltk-1.3.2/src/Fl_x.cxx.xhandlers 2014-07-22 15:23:18.093334572 +0200
+++ fltk-1.3.2/src/Fl_x.cxx 2014-07-22 15:23:18.096334624 +0200
@@ -188,6 +188,8 @@ void Fl::remove_fd(int n) {
remove_fd(n, -1);
}
+extern int fl_send_system_handlers(void *e);
+
#if CONSOLIDATE_MOTION
static Fl_Window* send_motion;
extern Fl_Window* fl_xmousewin;
@@ -198,6 +200,8 @@ static void do_queued_events() {
while (XEventsQueued(fl_display,QueuedAfterReading)) {
XEvent xevent;
XNextEvent(fl_display, &xevent);
+ if (fl_send_system_handlers(&xevent))
+ continue;
fl_handle(xevent);
}
// we send FL_LEAVE only if the mouse did not enter some other window:
|
