Mac OS X: removed all uses of Carbon (except for older OS versions) and re-organized

text input around the NSTextInput protocol.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8173 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

7 files changed, 162 insertions, 129 deletions

diff --git a/src/Fl_Gl_Choice.cxx b/src/Fl_Gl_Choice.cxx
index fa99d2705..df6267650 100644
--- a/src/Fl_Gl_Choice.cxx
+++ b/src/Fl_Gl_Choice.cxx
@@ -37,8 +37,8 @@
 #  include <FL/fl_utf8.h>
 
 #  ifdef __APPLE__
+#    include <ApplicationServices/ApplicationServices.H>
 #    include <FL/Fl_Window.H>
-#    include <Carbon/Carbon.h>
 #  endif
 
 #  ifdef WIN32
@@ -296,6 +296,14 @@ GLContext fl_create_gl_context(Fl_Window* window, const Fl_Gl_Choice* g, int lay
 }
 
 #  elif defined(__APPLE_QUARTZ__)
+static CGrafPtr fl_GetWindowPort(WindowRef window)
+{
+  typedef CGrafPtr (*wf)(WindowRef);
+  static wf f = NULL;
+  if ( ! f) f = (wf)Fl_X::get_carbon_function("GetWindowPort");
+  return (*f)(window);
+}
+
 // warning: the Quartz version should probably use Core GL (CGL) instead of AGL
 GLContext fl_create_gl_context(Fl_Window* window, const Fl_Gl_Choice* g, int layer) {
   GLContext context, shared_ctx = 0;
@@ -312,17 +320,17 @@ GLContext fl_create_gl_context(Fl_Window* window, const Fl_Gl_Choice* g, int lay
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 #if __LP64__
   // 64 bit version
-  aglSetWindowRef(context, Fl_X::i(window)->window_ref()/*fl_mac_windowref(window)*/ );
+  aglSetWindowRef(context, Fl_X::i(window)->window_ref() );
 #else
   // 32 bit version >= 10.5
   if (aglSetWindowRef != NULL)
-    aglSetWindowRef(context, Fl_X::i(window)->window_ref()/*fl_mac_windowref(window)*/ );
+    aglSetWindowRef(context, Fl_X::i(window)->window_ref() );
   else
-    aglSetDrawable( context, GetWindowPort( Fl_X::i(window)->window_ref()/*fl_mac_windowref(window)*/ ) );
+    aglSetDrawable( context, fl_GetWindowPort( Fl_X::i(window)->window_ref() ) );
 #endif
 #else
   // 32 bit version < 10.5
-  aglSetDrawable( context, GetWindowPort( Fl_X::i(window)->window_ref()/*fl_mac_windowref(window)*/ ) );
+  aglSetDrawable( context, fl_GetWindowPort( Fl_X::i(window)->window_ref() ) );
 #endif
   return (context);
 }
@@ -352,17 +360,17 @@ void fl_set_gl_context(Fl_Window* w, GLContext context) {
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 #if __LP64__
     // 64 bit version
-    aglSetWindowRef(context, Fl_X::i(w)->window_ref()/*fl_mac_windowref(w)*/ );
+    aglSetWindowRef(context, Fl_X::i(w)->window_ref() );
 #else
     // 32 bit version >= 10.5
     if (aglSetWindowRef != NULL)
-      aglSetWindowRef(context, Fl_X::i(w)->window_ref()/*fl_mac_windowref(w)*/ );
+      aglSetWindowRef(context, Fl_X::i(w)->window_ref() );
     else
-      aglSetDrawable( context, GetWindowPort( Fl_X::i(w)->window_ref()/*fl_mac_windowref(w)*/ ) );
+      aglSetDrawable( context, fl_GetWindowPort( Fl_X::i(w)->window_ref() ) );
 #endif
 #else
     // 32 bit version < 10.5
-    aglSetDrawable( context, GetWindowPort( Fl_X::i(w)->window_ref()/*fl_mac_windowref(w)*/ ) );
+    aglSetDrawable( context, fl_GetWindowPort( Fl_X::i(w)->window_ref() ) );
 #endif
     aglSetCurrentContext(context);
 #  else
diff --git a/src/Fl_Gl_Window.cxx b/src/Fl_Gl_Window.cxx
index 0f46b23bb..52bf72bad 100644
--- a/src/Fl_Gl_Window.cxx
+++ b/src/Fl_Gl_Window.cxx
@@ -277,12 +277,12 @@ void Fl_Gl_Window::flush() {
   // warning: the Quartz version should probably use Core GL (CGL) instead of AGL
   //: clear previous clipping in this shared port
 #if ! __LP64__
-  GrafPtr port = GetWindowPort( Fl_X::i(this)->window_ref() );
+/*GrafPtr port = GetWindowPort( Fl_X::i(this)->window_ref() );
   Rect rect; SetRect( &rect, 0, 0, 0x7fff, 0x7fff );
   GrafPtr old; GetPort( &old );
   SetPort( port );
   ClipRect( &rect );
-  SetPort( old );
+  SetPort( old );*/
 #endif
 #endif
 
diff --git a/src/Fl_Preferences.cxx b/src/Fl_Preferences.cxx
index eb393cf3f..7e70e7316 100644
--- a/src/Fl_Preferences.cxx
+++ b/src/Fl_Preferences.cxx
@@ -47,7 +47,7 @@
 #  define access _access
 #  define mkdir _mkdir
 #elif defined (__APPLE__)
-#  include <Carbon/Carbon.h>
+#  include <ApplicationServices/ApplicationServices.h>
 #  include <unistd.h>
 #  include <dlfcn.h>
 #else
diff --git a/src/Fl_Quartz_Printer.mm b/src/Fl_Quartz_Printer.mm
index 825826457..e531fa706 100644
--- a/src/Fl_Quartz_Printer.mm
+++ b/src/Fl_Quartz_Printer.mm
@@ -92,7 +92,11 @@ int Fl_Printer::start_job (int pagecount, int *frompage, int *topage)
     status = PMCreatePageFormat(&pageFormat);
     status = PMSessionDefaultPageFormat(printSession, pageFormat);
     if (status != noErr) return 1;
-    status = PMSessionPageSetupDialog(printSession, pageFormat, &accepted);
+    // get pointer to the PMSessionPageSetupDialog Carbon fucntion
+    typedef OSStatus (*dialog_f)(PMPrintSession, PMPageFormat, Boolean *);
+    static dialog_f f = NULL;
+    if (!f) f = (dialog_f)Fl_X::get_carbon_function("PMSessionPageSetupDialog");
+    status = (*f)(printSession, pageFormat, &accepted);
     if (status != noErr || !accepted) {
       Fl::first_window()->show();
       return 1;
@@ -102,7 +106,11 @@ int Fl_Printer::start_job (int pagecount, int *frompage, int *topage)
     status = PMSessionDefaultPrintSettings (printSession, printSettings);
     if (status != noErr) return 1;
     PMSetPageRange(printSettings, 1, (UInt32)kPMPrintAllPages);
-    status = PMSessionPrintDialog(printSession, printSettings, pageFormat, &accepted);
+    // get pointer to the PMSessionPrintDialog Carbon fucntion
+    typedef OSStatus (*dialog_f2)(PMPrintSession, PMPrintSettings, PMPageFormat, Boolean *);
+    static dialog_f2 f2 = NULL;
+    if (!f2) f2 = (dialog_f2)Fl_X::get_carbon_function("PMSessionPrintDialog");
+    status = (*f2)(printSession, printSettings, pageFormat, &accepted);
     if (!accepted) status = kPMCancel;
     if (status != noErr) {
       Fl::first_window()->show();
diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index 2ad315037..20a7250f8 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -38,23 +38,6 @@
 // One Compile to copy them all and in the bundle bind them,
 // in the Land of MacOS X where the Drop-Shadows lie."
 
-/*
- TODO: The following messages point to the last Carbon remainders. We should 
- really remove these as well, so we can stop linking to Carbon alltogether.
- 
- "_GetKeys", referenced from:
- Fl::get_key(int)  in Fl_get_key.o (kept only for pre-10.4 runs)
-  
- "_GetEventParameter", referenced from:
- carbonTextHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) in Fl.o
- 
- "_InstallEventHandler", referenced from:
- fl_open_display()     in Fl.o
- 
- "_GetEventDispatcherTarget", referenced from:
- fl_open_display()     in Fl.o
-*/
-
 #ifdef __APPLE__
 
 #define CONSOLIDATE_MOTION 0
@@ -84,7 +67,7 @@ extern "C" {
 typedef long NSInteger;
 typedef unsigned long NSUInteger;
 #else
-typedef int NSInteger;
+typedef long NSInteger;
 typedef unsigned int NSUInteger;
 #endif
 #endif
@@ -878,77 +861,14 @@ static void calc_e_text(CFStringRef s, char *buffer, size_t len, unsigned sym)
   }
 }
 
+static int cocoaKeyboardHandler(NSEvent *theEvent);
 
-// this gets called by CJK character palette input
-static OSStatus carbonTextHandler( EventHandlerCallRef nextHandler, EventRef event, void *unused )
+@interface FLTextView : NSTextView 
+// this subclass is needed under OS X 10.3 and 10.4 but not under 10.6 where the base class is enough
 {
-  // make sure the key window is an FLTK window
-  NSWindow *keywindow = [NSApp keyWindow];
-  if (keywindow == nil || ![keywindow isMemberOfClass:[FLWindow class]]) return eventNotHandledErr;
-  // under 10.5 this gets called only after character palette inputs
-  // but under 10.6 this gets also called by interpretKeyEvents 
-  // during keyboard input when we don't want to run it
-  if ([[NSApp currentEvent] type] != NSSystemDefined) return eventNotHandledErr;
-  Fl_Window *window = [(FLWindow*)keywindow getFl_Window];
-  fl_lock_function();
-  UniChar ucs[20];
-  ByteCount actual_size;
-  unsigned int i;
-  GetEventParameter( event, kEventParamTextInputSendText, typeUnicodeText, 
-                    NULL, 20, &actual_size, ucs );
-  char utf8buf[50], *p;
-  p = utf8buf;
-  for(i=0; i < actual_size/2; i++) {
-    p += fl_utf8encode(ucs[i], p);
-    }
-  int len = p - utf8buf;
-  utf8buf[len]=0;
-  
-  Fl::e_length = len;
-  Fl::e_text = utf8buf;
-  while (window->parent()) window = window->window();
-  Fl::handle(FL_KEYBOARD, window);
-  fl_unlock_function();
-  fl_lock_function();
-  Fl::handle(FL_KEYUP, window);
-  fl_unlock_function();
-  // for some reason, the window does not redraw until the next mouse move or button push
-  // sending a 'redraw()' or 'awake()' does not solve the issue!
-  Fl::flush();
-  return noErr;
-}
-
-static OSStatus cocoaKeyboardHandler(NSEvent *theEvent);
-
-@interface FLTextView : NSTextView
-{
-  BOOL compose_key; // YES iff entering a character composition
-  BOOL needKBhandler_val;
 }
-- (BOOL)needKBhandler;
-- (void)needKBhandler:(BOOL)value;
-- (BOOL)compose;
-- (void)compose:(BOOL)value;
-- (void)insertText:(id)aString;
-- (void)doCommandBySelector:(SEL)aSelector;
 @end
 @implementation FLTextView
-- (BOOL)needKBhandler
-{
-  return needKBhandler_val;
-}
-- (void)needKBhandler:(BOOL)value
-{
-  needKBhandler_val = value;
-}
-- (BOOL)compose
-{
-  return compose_key;
-}
-- (void)compose:(BOOL)value
-{
-  compose_key = value;
-}
 - (void)insertText:(id)aString
 {
   cocoaKeyboardHandler([NSApp currentEvent]);
@@ -960,7 +880,7 @@ static OSStatus cocoaKeyboardHandler(NSEvent *theEvent);
 @end
 
 /*
- * handle cocoa keyboard events
+Handle cocoa keyboard events
 Events during a character composition sequence:
  - keydown with deadkey -> [[theEvent characters] length] is 0
  - keyup -> [theEvent characters] contains the deadkey: display it temporarily
@@ -968,7 +888,7 @@ Events during a character composition sequence:
     replace the temporary character by this one
  - keyup -> [theEvent characters] contains the standard character
  */
-static OSStatus cocoaKeyboardHandler(NSEvent *theEvent)
+static int cocoaKeyboardHandler(NSEvent *theEvent)
 {
   static char buffer[32];
   int sendEvent = 0, retval = 0;
@@ -984,8 +904,6 @@ static OSStatus cocoaKeyboardHandler(NSEvent *theEvent)
   unsigned short sym = 0;
   keyCode = [theEvent keyCode];
   NSString *s = [theEvent characters];  
-  FLTextView *edit = (FLTextView*)[[theEvent window]  fieldEditor:YES forObject:nil];
-  [edit needKBhandler:NO];
   if ( (mods & NSShiftKeyMask) && (mods & NSCommandKeyMask) ) {
     s = [s uppercaseString]; // US keyboards return lowercase letter in s if cmd-shift-key is hit
   }
@@ -999,7 +917,6 @@ static OSStatus cocoaKeyboardHandler(NSEvent *theEvent)
       sendEvent = FL_KEYBOARD;
       // fall through
     case NSKeyUp:
-      if([edit compose]) sendEvent = FL_KEYBOARD; // when composing, the temporary character appears at KeyUp
       if ( !sendEvent ) {
         sendEvent = FL_KEYUP;
         Fl::e_state &= 0xbfffffff; // clear the deadkey flag
@@ -1026,13 +943,9 @@ static OSStatus cocoaKeyboardHandler(NSEvent *theEvent)
   }
   if (sendEvent) {
     retval = Fl::handle(sendEvent,window);
-    if([edit compose]) {
-      Fl::compose_state = 1;
-      [edit compose:NO];
-    }
   }
   fl_unlock_function();  
-  return retval ? (int)noErr : (int)eventNotHandledErr; // return noErr if FLTK handled the event
+  return retval;
 }
 
 
@@ -1310,8 +1223,7 @@ extern "C" {
   static FLTextView *view = nil;
   if (!view) {
     view = [[FLTextView alloc] initWithFrame:rect];
-    [view compose:NO];
-    }
+  }
   return view;
 }
 @end
@@ -1422,12 +1334,6 @@ void fl_open_display() {
       }
     }
     createAppleMenu();
-    // Install Carbon Event handler for character palette input
-    static EventTypeSpec textEvents[] = {
-      { kEventClassTextInput, kEventTextInputUnicodeForKeyEvent }
-    };
-    EventHandlerUPP textHandler = NewEventHandlerUPP( carbonTextHandler );
-    InstallEventHandler(GetEventDispatcherTarget(), textHandler, 1, textEvents, NULL, 0L);
     
     [[NSNotificationCenter defaultCenter] addObserver:mydelegate 
 	       selector:@selector(anywindowwillclosenotif:) 
@@ -1653,7 +1559,7 @@ static void  q_set_window_title(NSWindow *nsw, const char * name ) {
 }
 
 
-@interface FLView : NSView {
+@interface FLView : NSView <NSTextInput> {
 }
 - (void)drawRect:(NSRect)rect;
 - (BOOL)acceptsFirstResponder;
@@ -1694,8 +1600,8 @@ static void  q_set_window_title(NSWindow *nsw, const char * name ) {
 }
 - (BOOL)performKeyEquivalent:(NSEvent*)theEvent
 {   
-  OSStatus err = cocoaKeyboardHandler(theEvent);
-  return (err ? NO : YES);
+  int err = cocoaKeyboardHandler(theEvent);
+  return (err ? YES : NO);
 }
 - (BOOL)acceptsFirstMouse:(NSEvent*)theEvent
 {   
@@ -1738,12 +1644,7 @@ static void  q_set_window_title(NSWindow *nsw, const char * name ) {
 }
 - (void)keyDown:(NSEvent *)theEvent {
   FLTextView *edit = (FLTextView*)[[theEvent window]  fieldEditor:YES forObject:nil];
-  if ([[theEvent characters] length] == 0) [edit compose:YES];
-  if (Fl::compose_state)  [edit needKBhandler:YES];
-  else [edit needKBhandler:NO];
   [edit interpretKeyEvents:[NSArray arrayWithObject:theEvent]];
-  // in some cases (e.g., some Greek letters with tonos) interpretKeyEvents does not call insertText
-  if ([edit needKBhandler]) cocoaKeyboardHandler(theEvent);
 }
 - (void)keyUp:(NSEvent *)theEvent {
   cocoaKeyboardHandler(theEvent);
@@ -1843,6 +1744,99 @@ static void  q_set_window_title(NSWindow *nsw, const char * name ) {
 {
   return NSDragOperationGeneric;
 }
+
+// These functions implement text input.
+// Only two-stroke character composition works at this point.
+// Needs much elaboration to fully support CJK text input,
+// but this is the way to go.
+- (void)doCommandBySelector:(SEL)aSelector {
+}
+
+- (void)insertText:(id)aString {
+  NSEvent *event = [NSApp currentEvent];
+  NSEventType type = [event type];
+  NSString *str = @"";
+  NSString *received;
+  if ([aString isKindOfClass:[NSAttributedString class]]) {
+    received = [(NSAttributedString*)aString string];
+  } else {
+    received = (NSString*)aString;
+  }
+//NSLog(@"insertText: received=%@ event type=%d",received, type);
+  if (type == NSKeyDown ) {
+    str = [event characters];
+    }
+  if ([received isEqualToString:@"\b"] || [str isEqualToString:received]) {
+    if (type == NSKeyDown ) cocoaKeyboardHandler(event);
+  } else {
+    fl_lock_function();
+    Fl_Window *window = [(FLWindow*)[NSApp keyWindow] getFl_Window];
+    Fl::e_text = (char*)[received UTF8String];
+    Fl::e_length = strlen(Fl::e_text);
+    Fl::handle(FL_KEYBOARD, window);
+    Fl::handle(FL_KEYUP, window);
+    fl_unlock_function();
+    // for some reason, the window does not redraw until the next mouse move or button push
+    // sending a 'redraw()' or 'awake()' does not solve the issue!
+    Fl::flush();
+  }
+}
+
+- (void)setMarkedText:(id)aString selectedRange:(NSRange)newSelection  {
+  // NSLog(@"setMarkedText: %@ %d %d Fl::compose_state=%d",
+  //  aString,newSelection.location,newSelection.length,newSelection.location);
+  [self insertText:aString];
+  Fl::compose_state = newSelection.location;
+}
+
+- (void)unmarkText {
+  Fl::compose_state = 0;
+  //NSLog(@"unmarkText");
+}
+
+- (NSRange)selectedRange {
+  return NSMakeRange(NSNotFound, 0);
+}
+
+- (NSRange)markedRange {
+  //NSLog(@"markedRange ?");
+  return NSMakeRange(NSNotFound, Fl::compose_state);
+}
+
+- (BOOL)hasMarkedText {
+  //NSLog(@"hasMarkedText %s", Fl::compose_state > 0?"YES":"NO");
+  return (Fl::compose_state > 0);
+}
+
+- (NSAttributedString *)attributedSubstringFromRange:(NSRange)aRange {
+  //NSLog(@"attributedSubstringFromRange: %d %d",aRange.location,aRange.length);
+  return nil;
+}
+
+- (NSArray *)validAttributesForMarkedText {
+  return nil;
+}
+
+- (NSRect)firstRectForCharacterRange:(NSRange)aRange {
+  NSRect glyphRect, frame;
+  
+  frame = [self frame];
+  glyphRect.origin.x = frame.size.width;
+  glyphRect.origin.y = 0;
+  glyphRect.size.width = glyphRect.size.height = 0;
+  // Convert the rect to screen coordinates
+  glyphRect.origin = [[self window] convertBaseToScreen:glyphRect.origin];
+  return glyphRect;
+}
+
+- (NSUInteger)characterIndexForPoint:(NSPoint)aPoint {
+  return 0;
+}
+
+- (NSInteger)conversationIdentifier {
+  return (NSInteger)self;
+}
+
 @end
 
 
@@ -3271,6 +3265,26 @@ Window fl_xid(const Fl_Window* w)
   return Fl_X::i(w)->xid;
 }
 
+#include <dlfcn.h>
+
+/* Returns the address of a Carbon function after dynamically loading the Carbon library if needed.
+ Supports old Mac OS X versions that may use a couple of Carbon calls:
+ GetKeys used by OS X 10.3 or before (in Fl::get_key())
+ PMSessionPageSetupDialog and PMSessionPrintDialog used by 10.4 or before (in Fl_Printer::start_job())
+ GetWindowPort used by 10.4 or before (in Fl_Gl_Choice.cxx)
+ */
+void *Fl_X::get_carbon_function(const char *function_name) {
+  static void *carbon = NULL;
+  void *f = NULL;
+  if (!carbon) {
+    carbon = dlopen("/System/Library/Frameworks/Carbon.framework/Carbon", RTLD_LAZY);
+  }
+  if (carbon) {
+    f = dlsym(carbon, function_name);
+  }
+  return f;
+}
+  
 #endif // __APPLE__
 
 //
diff --git a/src/Fl_compose.cxx b/src/Fl_compose.cxx
index c773c6bef..7069c1f27 100644
--- a/src/Fl_compose.cxx
+++ b/src/Fl_compose.cxx
@@ -65,7 +65,7 @@ int Fl::compose(int& del) {
   if ((e_state & (FL_ALT | FL_META)) && !(ascii & 128)) return 0;
 #endif
   if(Fl::compose_state) {
-    del = 1;
+    del = Fl::compose_state;
     Fl::compose_state = 0;
   } else {
 #ifndef __APPLE__
diff --git a/src/Fl_get_key_mac.cxx b/src/Fl_get_key_mac.cxx
index 7f3c7a227..126b17806 100644
--- a/src/Fl_get_key_mac.cxx
+++ b/src/Fl_get_key_mac.cxx
@@ -83,8 +83,6 @@ int Fl::event_key(int k) {
   return get_key(k);
 }
 
-#include <stdio.h>
-
 //: returns true, if that key is pressed right now
 int Fl::get_key(int k) {
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
@@ -94,8 +92,13 @@ int Fl::get_key(int k) {
   else 
 #endif
   {
-  KeyMap foo;
-  GetKeys(foo);
+  typedef UInt32 fl_KeyMap[4];
+  fl_KeyMap foo;
+  // use the GetKeys Carbon function
+  typedef void (*keymap_f)(fl_KeyMap);
+  static keymap_f f = NULL;
+  if (!f) f = ( keymap_f )Fl_X::get_carbon_function("GetKeys");
+  (*f)(foo);
 #ifdef MAC_TEST_FOR_KEYCODES
  static int cnt = 0;
  if (cnt++>1024) {