path: root/tigervnc/build/patches/fltk-1_v6.3.x-keyboard-osx.patch

diff -ur fltk-1.3.0r9619.org/configure.in fltk-1.3.0r9619/configure.in
--- fltk-1.3.0r9619.org/configure.in	2012-04-22 04:45:09.000000000 +0200
+++ fltk-1.3.0r9619/configure.in	2012-06-18 13:47:33.290447462 +0200
@@ -865,6 +865,8 @@
     Darwin*)
         # MacOS X uses Cocoa for graphics.
         LIBS="$LIBS -framework Cocoa"
+        # And some Carbon for keyboard handling
+        LIBS="$LIBS -framework Carbon"
 
 	if test x$have_pthread = xyes; then
 	    AC_DEFINE(HAVE_PTHREAD)
diff -ur fltk-1.3.0r9619.org/src/Fl_cocoa.mm fltk-1.3.0r9619/src/Fl_cocoa.mm
--- fltk-1.3.0r9619.org/src/Fl_cocoa.mm	2012-06-16 10:49:52.000000000 +0200
+++ fltk-1.3.0r9619/src/Fl_cocoa.mm	2012-06-18 13:47:42.944910782 +0200
@@ -53,6 +53,7 @@
 #include <math.h>
 
 #import <Cocoa/Cocoa.h>
+#import <Carbon/Carbon.h>
 
 #ifndef NSINTEGER_DEFINED // appears with 10.5 in NSObjCRuntime.h
 #if defined(__LP64__) && __LP64__
@@ -114,6 +115,8 @@
 extern Fl_Window* fl_xmousewin;
 #endif
 
+bool use_simple_keyboard = false;
+
 enum { FLTKTimerEvent = 1, FLTKDataReadyEvent };
 
 
@@ -130,6 +133,39 @@
 {
 }
 
+// Undocumented voodoo. Taken from Mozilla.
+#define ENABLE_ROMAN_KYBDS_ONLY -23
+
+void fl_update_focus(void)
+{
+  Fl_Widget *focus;
+
+  focus = Fl::grab();
+  if (!focus)
+    focus = Fl::focus();
+  if (!focus)
+    return;
+
+  if (focus->simple_keyboard())
+    use_simple_keyboard = true;
+  else
+    use_simple_keyboard = false;
+
+  // Force a "Roman" or "ASCII" keyboard, which both the Mozilla and
+  // Safari people seem to think implies turning off advanced IME stuff
+  // (see nsTSMManager::SyncKeyScript in Mozilla and enableSecureTextInput
+  // in Safari/Webcore). Should be good enough for us then...
+#if (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5)
+  CFArrayRef inputSources = TISCreateASCIICapableInputSourceList();
+  TSMSetDocumentProperty(TSMGetActiveDocument(),
+                         kTSMDocumentEnabledInputSourcesPropertyTag,
+                         sizeof(CFArrayRef), &inputSources);
+  CFRelease(inputSources);
+#else
+  KeyScript(use_simple_keyboard ? ENABLE_ROMAN_KYBDS_ONLY : smKeyEnableKybds);
+#endif  
+}
+
 /*
  * Mac keyboard lookup table
  */
@@ -908,6 +944,25 @@
 }
 @end
 
+static const char* cocoaDead2FLTK(const char *in)
+{
+  if (strcmp(in, "\140") == 0)      // GRAVE ACCENT
+    return "\314\200";              // COMBINING GRAVE ACCENT
+  if (strcmp(in, "\302\264") == 0)  // ACUTE ACCENT
+    return "\314\201";              // COMBINING ACUTE ACCENT
+  if (strcmp(in, "\136") == 0)      // CIRCUMFLEX ACCENT
+    return "\314\202";              // COMBINING CIRCUMFLEX ACCENT
+  if (strcmp(in, "\176") == 0)      // TILDE
+    return "\314\203";              // COMBINING TILDE
+  if (strcmp(in, "\302\250") == 0)  // DIAERESIS
+    return "\314\210";              // COMBINING DIAERESIS
+  // FIXME: OS X dead key behaviour isn't documented and I don't have
+  //        any more keyboards to test with...
+
+  // hope that OS X gave us something proper to begin with
+  return in;
+}
+
 /*
 Handle cocoa keyboard events
 Events during a character composition sequence:
@@ -1648,6 +1703,7 @@
 - (void)rightMouseDragged:(NSEvent *)theEvent;
 - (void)otherMouseDragged:(NSEvent *)theEvent;
 - (void)scrollWheel:(NSEvent *)theEvent;
++ (NSString *)keyTranslate:(UInt16)keyCode withModifierFlags:(UInt32)modifierFlags;
 - (BOOL)handleKeyDown:(NSEvent *)theEvent;
 - (void)keyDown:(NSEvent *)theEvent;
 - (void)keyUp:(NSEvent *)theEvent;
@@ -1726,6 +1782,130 @@
 - (void)scrollWheel:(NSEvent *)theEvent {
   cocoaMouseWheelHandler(theEvent);
 }
++ (NSString *)keyTranslate:(UInt16)keyCode withModifierFlags:(UInt32)modifierFlags {
+  const UCKeyboardLayout *layout;
+  OSStatus err;
+
+  layout = NULL;
+
+#if (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5)
+  TISInputSourceRef keyboard;
+  CFDataRef uchr;
+
+  keyboard = TISCopyCurrentKeyboardInputSource();
+  uchr = (CFDataRef)TISGetInputSourceProperty(keyboard,
+                                              kTISPropertyUnicodeKeyLayoutData);
+  if (uchr == NULL)
+    return nil;
+
+  layout = (const UCKeyboardLayout*)CFDataGetBytePtr(uchr);
+#else
+  KeyboardLayoutRef old_layout;
+  int kind;
+
+  err = KLGetCurrentKeyboardLayout(&old_layout);
+  if (err != noErr)
+    return nil;
+
+  err = KLGetKeyboardLayoutProperty(old_layout, kKLKind,
+                                    (const void**)&kind);
+  if (err != noErr)
+    return nil;
+
+  // Old, crufty layout format?
+  if (kind == kKLKCHRKind) {
+    void *kchr_layout;
+
+    UInt32 chars, state;
+    char buf[3];
+
+    unichar result[16];
+    ByteCount in_len, out_len;
+
+    err = KLGetKeyboardLayoutProperty(old_layout, kKLKCHRData,
+                                      (const void**)&kchr_layout);
+    if (err != noErr)
+      return nil;
+
+    state = 0;
+
+    keyCode &= 0x7f;
+    modifierFlags &= 0xff00;
+
+    chars = KeyTranslate(kchr_layout, keyCode | modifierFlags, &state);
+
+    buf[0] = (chars >> 16) & 0xff;
+    buf[1] = chars & 0xff;
+    buf[2] = '\0';
+
+    if (buf[0] == '\0') {
+      buf[0] = buf[1];
+      buf[1] = '\0';
+    }
+
+    // The data is now in some layout specific encoding. Need to convert
+    // this to unicode.
+
+    ScriptCode script;
+    TextEncoding encoding;
+    TECObjectRef converter;
+
+    script = (ScriptCode)GetScriptManagerVariable(smKeyScript);
+
+    err = UpgradeScriptInfoToTextEncoding(script, kTextLanguageDontCare,
+                                          kTextRegionDontCare, NULL,
+                                          &encoding);
+    if (err != noErr)
+      return nil;
+
+    err = TECCreateConverter(&converter, encoding, kTextEncodingUnicodeV4_0);
+    if (err != noErr)
+      return nil;
+
+    in_len = strlen(buf);
+    out_len = sizeof(result);
+
+    err = TECConvertText(converter, (ConstTextPtr)buf, in_len, &in_len,
+                         (TextPtr)result, out_len, &out_len);
+
+    TECDisposeConverter(converter);
+
+    if (err != noErr)
+      return nil;
+
+    return [NSString stringWithCharacters:result
+                     length:(out_len / sizeof(unichar))];
+  }
+
+  if ((kind != kKLKCHRuchrKind) && (kind != kKLuchrKind))
+    return nil;
+
+  err = KLGetKeyboardLayoutProperty(old_layout, kKLuchrData,
+                                    (const void**)&layout);
+  if (err != noErr)
+    return nil;
+#endif
+ 
+  if (layout == NULL)
+    return nil;
+
+  UInt32 dead_state;
+  UniCharCount max_len, actual_len;
+  UniChar string[255];
+
+  dead_state = 0;
+  max_len = sizeof(string)/sizeof(*string);
+
+  modifierFlags = (modifierFlags >> 8) & 0xff;
+
+  err = UCKeyTranslate(layout, keyCode, kUCKeyActionDown, modifierFlags,
+                       LMGetKbdType(), 0, &dead_state, max_len, &actual_len,
+                       string);
+  if (err != noErr)
+    return nil;
+
+  return [NSString stringWithCharacters:string length:actual_len];
+}
 - (BOOL)handleKeyDown:(NSEvent *)theEvent {
   //NSLog(@"handleKeyDown");
   fl_lock_function();
@@ -1752,14 +1932,47 @@
       break;
     }
   }
-  if (!no_text_key && !(Fl::e_state & FL_META) ) {
-    // Don't send cmd-<key> to interpretKeyEvents because it beeps.
+  if (!no_text_key) {
+    // The simple keyboard model will ignore insertText, so we need to grab
+    // the symbol directly from the event. Note that we still use setMarkedText.
+    if (use_simple_keyboard) {
+      NSString *simple_chars;
+      UInt32 modifiers;
+
+      // We want a "normal" symbol out of the event, which basically means
+      // we only respect the shift and alt/altgr modifiers. Cocoa can help
+      // us if we only wanted shift, but as we also want alt/altgr, we'll
+      // have to do some lookup ourselves. This matches our behaviour on
+      // other platforms.
+
+      modifiers = 0;
+      if ([theEvent modifierFlags] & NSAlphaShiftKeyMask)
+        modifiers |= alphaLock;
+      if ([theEvent modifierFlags] & NSShiftKeyMask)
+        modifiers |= shiftKey;
+      if ([theEvent modifierFlags] & NSAlternateKeyMask)
+        modifiers |= optionKey;
+
+      simple_chars = [FLView keyTranslate:[theEvent keyCode]
+                             withModifierFlags:modifiers];
+      if (simple_chars == nil) {
+        // Something went wrong. Fall back to what Cocoa gave us...
+        simple_chars = [theEvent charactersIgnoringModifiers];
+      }
+
+      [FLView prepareEtext:simple_chars];
+    }
+
     // Then we can let the OS have a stab at it and see if it thinks it
     // should result in some text
-    NSText *edit = [[theEvent window]  fieldEditor:YES forObject:nil];
-    in_key_event = true;
-    [edit interpretKeyEvents:[NSArray arrayWithObject:theEvent]];
-    in_key_event = false;
+
+    // Don't send cmd-<key> to interpretKeyEvents because it beeps.
+    if (!(Fl::e_state & FL_META)) {
+      NSText *edit = [[theEvent window]  fieldEditor:YES forObject:nil];
+      in_key_event = true;
+      [edit interpretKeyEvents:[NSArray arrayWithObject:theEvent]];
+      in_key_event = false;
+    }
   }
   //NSLog(@"to text=%@ l=%d", [NSString stringWithUTF8String:Fl::e_text], Fl::e_length);
   int handled = Fl::handle(FL_KEYDOWN, window);
@@ -1937,21 +2150,30 @@
   //NSLog(@"insertText: received=%@",received);
 
   if (!in_key_event) fl_lock_function();
+
+  // Simple keyboard widgets do not want these side channel inputs.
+  if (use_simple_keyboard)
+    goto end;
+
   [FLView prepareEtext:received];
+
   // We can get called outside of key events (e.g. from the character
-  // palette). Transform such actions to FL_PASTE events.
+  // palette). We need to fake our own key event at that point.
   if (!in_key_event) {
     Fl_Window *target = [(FLWindow*)[self window] getFl_Window];
-    Fl::handle(FL_PASTE, target);
+    Fl::e_keysym = Fl::e_original_keysym = 0;
+    Fl::handle(FL_KEYDOWN, target);
     // 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();
   }
+
+end:
   if (!in_key_event) fl_unlock_function();
 }
 
 - (void)setMarkedText:(id)aString selectedRange:(NSRange)newSelection  {
-  NSString *received;
+  NSString *received, *current, *aggregate;
   if (newSelection.location == 0) {
     [self unmarkText];
     return;
@@ -1962,11 +2184,47 @@
     received = (NSString*)aString;
   }
   //NSLog(@"setMarkedText: %@ %d %d",received,newSelection.location,newSelection.length);
+
+  fl_lock_function();
+
+  // Simple keyboard widgets generally do not want these side channel
+  // inputs, but we have no other way of getting dead keys so we make
+  // an exception in that case.
+  if (use_simple_keyboard) {
+    if (in_key_event && (Fl::e_length == 0)) {
+      [FLView prepareEtext:received];
+
+      Fl::e_text = (char*)cocoaDead2FLTK(Fl::e_text);
+      Fl::e_length = strlen(Fl::e_text);
+    }
+    goto end;
+  }
+
   // This code creates the OS X behaviour of seeing dead keys as things
   // are being composed.
+  //
+  // Note: The concatenation thing is because of how OS X deals with
+  //       invalid sequences. At that point it will spit out one call
+  //       to insertText with the now aborted sequence, and one new
+  //       call to setMarkedText with the new sequence. Since we want
+  //       both to be visible, we need to concatenate.
   next_compose_length = newSelection.location;
-  [FLView prepareEtext:received];
-  //NSLog(@"Fl::e_text=%@ Fl::e_length=%d next_compose_length=%d", received, Fl::e_length, next_compose_length);
+  current = [NSString stringWithUTF8String:Fl::e_text];
+  aggregate = [current stringByAppendingString:received];
+
+  [FLView prepareEtext:aggregate];
+  //NSLog(@"Fl::e_text=%@ Fl::e_length=%d next_compose_length=%d", aggregate, Fl::e_length, next_compose_length);
+
+  // We can get called outside of key events (e.g. from the character
+  // palette). We need to fake our own key event at that point.
+  if (!in_key_event) {
+    Fl_Window *target = [(FLWindow*)[self window] getFl_Window];
+    Fl::e_keysym = Fl::e_original_keysym = 0;
+    Fl::handle(FL_KEYDOWN, target);
+  }
+
+end:
+  fl_unlock_function();
 }
 
 - (void)unmarkText {