6 files changed, 84 insertions, 0 deletions
diff --git a/src/drivers/Darwin/Fl_Darwin_System_Driver.H b/src/drivers/Darwin/Fl_Darwin_System_Driver.H
index a95bac019..61a7c961e 100644
--- a/src/drivers/Darwin/Fl_Darwin_System_Driver.H
+++ b/src/drivers/Darwin/Fl_Darwin_System_Driver.H
@@ -43,6 +43,7 @@ class Fl_Darwin_System_Driver : public Fl_System_Driver
 public:
   virtual int single_arg(const char *arg);
   virtual int arg_and_value(const char *name, const char *value);
+  virtual int compose(int &del);
 };
 
 #endif // FL_DARWIN_SYSTEM_DRIVER_H
diff --git a/src/drivers/Darwin/Fl_Darwin_System_Driver.cxx b/src/drivers/Darwin/Fl_Darwin_System_Driver.cxx
index bbab50be9..590e23d0b 100644
--- a/src/drivers/Darwin/Fl_Darwin_System_Driver.cxx
+++ b/src/drivers/Darwin/Fl_Darwin_System_Driver.cxx
@@ -19,8 +19,12 @@
 
 #include "../../config_lib.h"
 #include "Fl_Darwin_System_Driver.H"
+#include <FL/Fl.H>
+#include <FL/x.H>
 #include <string.h>
 
+int Fl_X::next_marked_length = 0;
+
 //const char* fl_local_alt   = "\xe2\x8c\xa5\\"; // U+2325 (option key)
 const char* fl_local_alt   = "⌥\\"; // U+2325 (option key)
 //const char* fl_local_ctrl  = "\xe2\x8c\x83\\"; // U+2303 (up arrowhead)
@@ -45,6 +49,46 @@ int Fl_Darwin_System_Driver::arg_and_value(const char *name, const char *value)
   return strcmp(name, "NSDocumentRevisionsDebugMode") == 0;
 }
 
+static int insertion_point_x = 0;
+static int insertion_point_y = 0;
+static int insertion_point_height = 0;
+static bool insertion_point_location_is_valid = false;
+
+void Fl::reset_marked_text() {
+  Fl::compose_state = 0;
+  Fl_X::next_marked_length = 0;
+  insertion_point_location_is_valid = false;
+}
+
+int Fl_X::insertion_point_location(int *px, int *py, int *pheight)
+// return true if the current coordinates of the insertion point are available
+{
+  if ( ! insertion_point_location_is_valid ) return false;
+  *px = insertion_point_x;
+  *py = insertion_point_y;
+  *pheight = insertion_point_height;
+  return true;
+}
+
+void Fl::insertion_point_location(int x, int y, int height) {
+  insertion_point_location_is_valid = true;
+  insertion_point_x = x;
+  insertion_point_y = y;
+  insertion_point_height = height;
+}
+
+int Fl_Darwin_System_Driver::compose(int &del) {
+  int condition;
+  int has_text_key = Fl::compose_state || Fl::e_keysym <= '~' || Fl::e_keysym == FL_Iso_Key ||
+  (Fl::e_keysym >= FL_KP && Fl::e_keysym <= FL_KP_Last && Fl::e_keysym != FL_KP_Enter);
+  condition = Fl::e_state&(FL_META | FL_CTRL) ||
+  (Fl::e_keysym >= FL_Shift_L && Fl::e_keysym <= FL_Alt_R) || // called from flagsChanged
+  !has_text_key ;
+  if (condition) { del = 0; return 0;} // this stuff is to be treated as a function key
+  del = Fl::compose_state;
+  Fl::compose_state = Fl_X::next_marked_length;
+  return 1;
+}
 
 //
 // End of "$Id$".
diff --git a/src/drivers/Posix/Fl_Posix_System_Driver.H b/src/drivers/Posix/Fl_Posix_System_Driver.H
index c18e3be0e..56a6675d3 100644
--- a/src/drivers/Posix/Fl_Posix_System_Driver.H
+++ b/src/drivers/Posix/Fl_Posix_System_Driver.H
@@ -43,6 +43,8 @@ class Fl_Posix_System_Driver : public Fl_System_Driver
 public:
   virtual void display_arg(const char *arg);
   virtual int XParseGeometry(const char*, int*, int*, unsigned int*, unsigned int*);
+  virtual int compose(int &del);
+  virtual void compose_reset();
 };
 
 #endif // FL_POSIX_SYSTEM_DRIVER_H
diff --git a/src/drivers/Posix/Fl_Posix_System_Driver.cxx b/src/drivers/Posix/Fl_Posix_System_Driver.cxx
index 16c71f56e..9cdf8c2dd 100644
--- a/src/drivers/Posix/Fl_Posix_System_Driver.cxx
+++ b/src/drivers/Posix/Fl_Posix_System_Driver.cxx
@@ -20,6 +20,8 @@
 #include "Fl_Posix_System_Driver.H"
 #include <FL/Fl.H>
 
+extern XIC fl_xim_ic; // in Fl_x.cxx
+
 
 // Pointers you can use to change FLTK to a foreign language.
 // Note: Similar pointers are defined in FL/fl_ask.H and src/fl_ask.cxx
@@ -42,6 +44,24 @@ int Fl_Posix_System_Driver::XParseGeometry(const char* string, int* x, int* y,
   return ::XParseGeometry(string, x, y, width, height);
 }
 
+int Fl_Posix_System_Driver::compose(int& del) {
+  int condition;
+  unsigned char ascii = (unsigned char)Fl::e_text[0];
+  condition = (Fl::e_state & (FL_ALT | FL_META | FL_CTRL)) && !(ascii & 128) ;
+  if (condition) { del = 0; return 0;} // this stuff is to be treated as a function key
+  del = Fl::compose_state;
+  Fl::compose_state = 0;
+  // Only insert non-control characters:
+  if ( (!Fl::compose_state) && ! (ascii & ~31 && ascii!=127)) { return 0; }
+  return 1;
+}
+
+void Fl_Posix_System_Driver::compose_reset()
+{
+  Fl::compose_state = 0;
+  if (fl_xim_ic) XmbResetIC(fl_xim_ic);
+}
+
 //
 // End of "$Id$".
 //
diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
index c937c97da..049c516d4 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
+++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
@@ -45,6 +45,7 @@ public:
   virtual void warning(const char *format, va_list args);
   virtual void error(const char *format, va_list args);
   virtual void fatal(const char *format, va_list args);
+  virtual int compose(int &del);
 };
 
 #endif // FL_WINAPI_SYSTEM_DRIVER_H
diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
index 8ea6113a0..b05796eb5 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
+++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
@@ -19,6 +19,7 @@
 
 #include "../../config_lib.h"
 #include "Fl_WinAPI_System_Driver.H"
+#include <FL/Fl.H>
 #include <stdio.h>
 #include <windows.h>
 
@@ -51,6 +52,21 @@ void Fl_WinAPI_System_Driver::fatal(const char *format, va_list args) {
   ::exit(1);
 }
 
+int Fl_WinAPI_System_Driver::compose(int &del) {
+  unsigned char ascii = (unsigned char)Fl::e_text[0];
+  int condition = (Fl::e_state & (FL_ALT | FL_META)) && !(ascii & 128) ;
+  if (condition) { // this stuff is to be treated as a function key
+    del = 0;
+    return 0;
+  }
+  del = Fl::compose_state;
+  Fl::compose_state = 0;
+  // Only insert non-control characters:
+  if ( (!Fl::compose_state) && ! (ascii & ~31 && ascii!=127)) {
+    return 0;
+  }
+  return 1;
+}
 
 //
 // End of "$Id$".