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-rw-r--r--FL/Fl_Input.H168
-rw-r--r--documentation/src/events.dox24
-rw-r--r--src/Fl_compose.cxx167
3 files changed, 42 insertions, 317 deletions
diff --git a/FL/Fl_Input.H b/FL/Fl_Input.H
index 89903a24c..da193849d 100644
--- a/FL/Fl_Input.H
+++ b/FL/Fl_Input.H
@@ -40,7 +40,11 @@
characters (even 0), and will correctly display any UTF text, using
^X notation for unprintable control characters. It assumes the
font can draw any characters of the used scripts, which is true
- for standard fonts under MSWindows and Mac OS X.</P>
+ for standard fonts under MSWindows and Mac OS X.
+ Characters can be input using the keyboard or the character palette/map.
+ Character composition is done using using dead keys and/or a compose
+ key as defined by the operating system.
+</P>
<CENTER><TABLE border=1 WIDTH=90% summary="Fl_Input keyboard and mouse bindings.">
@@ -84,168 +88,8 @@
expected.</TD></TR>
<TR><TD><B>Shift+move</B></TD><TD>Move the cursor but also extend the
selection.</TD></TR>
-
- <TR><TD><B>RightCtrl or
- <BR>Compose</B></TD><TD>
- \anchor Fl_Input_Compose_Character
- Start a compose-character
- sequence. The next one or two keys typed define the character to
- insert (see table that follows.)
-
- <p>For instance, to type "á" type [compose][a]['] or [compose]['][a].
-
- <P>The character "nbsp" (non-breaking space) is typed by using
- [compose][space].
-
- <P>The single-character sequences may be followed by a space if
- necessary to remove ambiguity. For instance, if you really want to
- type "ª~" rather than "ã" you must type [compose][a][space][~].
-
- <p>The same key may be used to "quote" control characters into the
- text. If you need a ^Q character you can get one by typing
- [compose][Control+Q].
-
- <p>X may have a key on the keyboard
- defined as XK_Multi_key. If so this key may be used as well
- as the right-hand control key. You can set this up with the program
- xmodmap.
-
- <p>If your keyboard is set to support a foreign language you should
- also be able to type "dead key" prefix characters. On X you will
- actually be able to see what dead key you typed, and if you then move
- the cursor without completing the sequence the accent will remain
- inserted.
-
- <p>Under MSWindows or Mac OS X, character composition is done using
- system-defined keystroke series.</TD></TR>
</TABLE></CENTER>
-
- <!-- NEW PAGE -->
- <center><table border=1 summary="Character Composition Table">
- <caption align="top">Character Composition Table</caption>
- <tr>
- <th>Keys</th><th>Char</th>
- <th>Keys</th><th>Char</th>
- <th>Keys</th><th>Char</th>
- <th>Keys</th><th>Char</th>
- <th>Keys</th><th>Char</th>
- <th>Keys</th><th>Char</th>
-
- </tr><tr>
- <td align=center>sp</td><td align=center><small>nbsp</small></td>
- <td align=center>*</td><td align=center>°</td>
- <td align=center>` A</td><td align=center>À</td>
- <td align=center>D -</td><td align=center>Ð</td>
- <td align=center>` a</td><td align=center>à</td>
- <td align=center>d -</td><td align=center>ð</td>
- </tr><tr>
- <td align=center>!</td><td align=center>¡</td>
- <td align=center>+ -</td><td align=center>±</td>
- <td align=center>' A</td><td align=center>Á</td>
- <td align=center>~ N</td><td align=center>Ñ</td>
- <td align=center>' a</td><td align=center>á</td>
- <td align=center>~ n</td><td align=center>ñ</td>
- </tr><tr>
- <td align=center>%</td><td align=center>¢</td>
- <td align=center>2</td><td align=center>²</td>
- <td align=center>A ^</td><td align=center>Â</td>
- <td align=center>` O</td><td align=center>Ò</td>
- <td align=center>^ a</td><td align=center>â</td>
- <td align=center>` o</td><td align=center>ò</td>
- </tr><tr>
- <td align=center>#</td><td align=center>£</td>
- <td align=center>3</td><td align=center>³</td>
- <td align=center>~ A</td><td align=center>Ã</td>
- <td align=center>' O</td><td align=center>Ó</td>
- <td align=center>~ a</td><td align=center>ã</td>
- <td align=center>' o</td><td align=center>ó</td>
- </tr><tr>
- <td align=center>$</td><td align=center>¤</td>
- <td align=center>'</td><td align=center>´</td>
- <td align=center>: A</td><td align=center>Ä</td>
- <td align=center>^ O</td><td align=center>Ô</td>
- <td align=center>: a</td><td align=center>ä</td>
- <td align=center>^ o</td><td align=center>ô</td>
- </tr><tr>
- <td align=center>y =</td><td align=center>¥</td>
- <td align=center>u</td><td align=center>µ</td>
- <td align=center>* A</td><td align=center>Å</td>
- <td align=center>~ O</td><td align=center>Õ</td>
- <td align=center>* a</td><td align=center>å</td>
- <td align=center>~ o</td><td align=center>õ</td>
- </tr><tr>
- <td align=center>|</td><td align=center>¦</td>
- <td align=center>p</td><td align=center>¶</td>
- <td align=center>A E</td><td align=center>Æ</td>
- <td align=center>: O</td><td align=center>Ö</td>
- <td align=center>a e</td><td align=center>æ</td>
- <td align=center>: o</td><td align=center>ö</td>
- </tr><tr>
- <td align=center>&</td><td align=center>§</td>
- <td align=center>.</td><td align=center>·</td>
- <td align=center>, C</td><td align=center>Ç</td>
- <td align=center>x</td><td align=center>×</td>
- <td align=center>, c</td><td align=center>ç</td>
- <td align=center>- :</td><td align=center>÷</td>
- </tr><tr>
- <td align=center>:</td><td align=center>¨</td>
- <td align=center>,</td><td align=center>¸</td>
- <td align=center>E `</td><td align=center>È</td>
- <td align=center>O /</td><td align=center>Ø</td>
- <td align=center>` e</td><td align=center>è</td>
- <td align=center>o /</td><td align=center>ø</td>
- </tr><tr>
- <td align=center>c</td><td align=center>©</td>
- <td align=center>1</td><td align=center>¹</td>
- <td align=center>' E</td><td align=center>É</td>
- <td align=center>` U</td><td align=center>Ù</td>
- <td align=center>' e</td><td align=center>é</td>
- <td align=center>` u</td><td align=center>ù</td>
- </tr><tr>
- <td align=center>a</td><td align=center>ª</td>
- <td align=center>o</td><td align=center>º</td>
- <td align=center>^ E</td><td align=center>Ê</td>
- <td align=center>' U</td><td align=center>Ú</td>
- <td align=center>^ e</td><td align=center>ê</td>
- <td align=center>' u</td><td align=center>ú</td>
- </tr><tr>
- <td align=center>&lt; &lt;</td><td align=center>«</td>
- <td align=center>&gt; &gt;</td><td align=center>»</td>
- <td align=center>: E</td><td align=center>Ë</td>
- <td align=center>^ U</td><td align=center>Û</td>
- <td align=center>: e</td><td align=center>ë</td>
- <td align=center>^ u</td><td align=center>û</td>
- </tr><tr>
- <td align=center>~</td><td align=center>¬</td>
- <td align=center>1 4</td><td align=center>¼</td>
- <td align=center>` I</td><td align=center>Ì</td>
- <td align=center>: U</td><td align=center>Ü</td>
- <td align=center>` i</td><td align=center>ì</td>
- <td align=center>: u</td><td align=center>ü</td>
- </tr><tr>
- <td align=center>-</td><td align=center>­</td>
- <td align=center>1 2</td><td align=center>½</td>
- <td align=center>' I</td><td align=center>Í</td>
- <td align=center>' Y</td><td align=center>Ý</td>
- <td align=center>' i</td><td align=center>í</td>
- <td align=center>' y</td><td align=center>ý</td>
- </tr><tr>
- <td align=center>r</td><td align=center>®</td>
- <td align=center>3 4</td><td align=center>¾</td>
- <td align=center>^ I</td><td align=center>Î</td>
- <td align=center>T H</td><td align=center>Þ</td>
- <td align=center>^ i</td><td align=center>î</td>
- <td align=center>t h</td><td align=center>þ</td>
- </tr><tr>
- <td align=center>_</td><td align=center>¯</td>
- <td align=center>?</td><td align=center>¿</td>
- <td align=center>: I</td><td align=center>Ï</td>
- <td align=center>s s</td><td align=center>ß</td>
- <td align=center>: i</td><td align=center>ï</td>
- <td align=center>: y</td><td align=center>ÿ</td>
- </tr>
- </table></center>
-*/
+ */
class FL_EXPORT Fl_Input : public Fl_Input_ {
int handle_key();
int shift_position(int p);
diff --git a/documentation/src/events.dox b/documentation/src/events.dox
index cfb2552db..c142b3319 100644
--- a/documentation/src/events.dox
+++ b/documentation/src/events.dox
@@ -164,6 +164,7 @@ should return 1. If you
return zero then FLTK assumes you ignored the key and will
then attempt to send it to a parent widget. If none of them want
it, it will change the event into a \p FL_SHORTCUT event.
+FL_KEYBOARD events are also generated by the character palette/map.
To receive \p FL_KEYBOARD events you must also
respond to the \p FL_FOCUS and \p FL_UNFOCUS
@@ -171,7 +172,7 @@ events.
If you are writing a text-editing widget you may also want to call the
Fl::compose()
-function to translate individual keystrokes into foreign characters.
+function to translate individual keystrokes into characters.
\p FL_KEYUP events are sent to the widget that
currently has focus. This is not necessarily the same widget
@@ -411,21 +412,15 @@ window modal.
\section events_compose_characters FLTK Compose-Character Sequences
-\todo Does Fltk Compose Character Sequences text need updating
- after the addition of UTF-8 handling to FLTK-1.3.x ?
-
-The foreign-letter compose processing done by the Fl_Input widget's
-\ref Fl_Input_Compose_Character "compose"
-key handler is provided in a function that you can call if you are
+The character composition done by Fl_Input widget
+requires that you call the Fl::compose() function if you are
writing your own text editor widget.
-FLTK uses its own compose processing to allow "preview" of
-the partially composed sequence, which is impossible with the
-usual "dead key" processing.
-
-Although currently only characters in the ISO-8859-1
-character set are handled, you should call this in case any
-enhancements to the processing are done in the future. The
+Currently, all characters made by single key strokes
+with or without modifier keys, or by system-defined character
+compose sequences (that can involve dead keys or a compose key) can be input.
+You should call Fl::compose() in case any
+enhancements to this processing are done in the future. The
interface has been designed to handle arbitrary UTF-8 encoded
text.
@@ -434,6 +429,7 @@ The following methods are provided for character composition:
\li Fl::compose()
\li Fl::compose_reset()
+Under Mac OS X, FLTK "previews" partially composed sequences.
\htmlonly
<hr>
diff --git a/src/Fl_compose.cxx b/src/Fl_compose.cxx
index 8fc3ef179..b6c47a6cc 100644
--- a/src/Fl_compose.cxx
+++ b/src/Fl_compose.cxx
@@ -28,40 +28,47 @@
#include <FL/Fl.H>
#include <FL/x.H>
-
-#if !defined(__APPLE__) && !defined(WIN32)
-
-static const char* const compose_pairs =
-//"=E _'f _\"..+ ++^ %%^S< OE ^Z ^''^^\"\"^-*- --~ TM^s> oe ^z:Y" // this is not unicode but CP1252
-" ! % # $ y=| & : c a <<~ - r _ * +-2 3 ' u p . , 1 o >>141234? " // unicode from U+00A0
-"`A'A^A~A:A*AAE,C`E'E^E:E`I'I^I:I-D~N`O'O^O~O:Ox O/`U'U^U:U'YTHss" // unicode from U+00C0
-"`a'a^a~a:a*aae,c`e'e^e:e`i'i^i:i-d~n`o'o^o~o:o-:o/`u'u^u:u'yth:y";// unicode from U+00E0
-
-#endif
-
#ifndef FL_DOXYGEN
+// at present, this is effectively used by Mac OS X only
int Fl::compose_state = 0;
#endif
-#if defined(__APPLE__) || defined(WIN32)
-// under Mac OS X and MS Windows, character composition is handled by the OS
+/** Any text editing widget should call this for each FL_KEYBOARD event.
+ Use of this function is very simple.
+
+ <p>If <i>true</i> is returned, then it has modified the
+ Fl::event_text() and Fl::event_length() to a set of <i>bytes</i> to
+ insert (it may be of zero length!). In will also set the "del"
+ parameter to the number of <i>bytes</i> to the left of the cursor to
+ delete, this is used to delete the results of the previous call to
+ Fl::compose().
+
+ <p>If <i>false</i> is returned, the keys should be treated as function
+ keys, and del is set to zero. You could insert the text anyways, if
+ you don't know what else to do.
+
+ <p>Though the current implementation returns immediately, future
+ versions may take quite awhile, as they may pop up a window or do
+ other user-interface things to allow characters to be selected.
+ */
int Fl::compose(int& del) {
+ // character composition is now handled by the OS
del = 0;
-#ifdef WIN32
- unsigned char ascii = (unsigned)e_text[0];
- if ((e_state & (FL_ALT|FL_META)) && !(ascii & 128)) return 0;
-#elif defined(__APPLE__)
+#if defined(__APPLE__)
// this stuff is to be treated as a function key
if(Fl::e_length == 0 || Fl::e_keysym == FL_Enter || Fl::e_keysym == FL_KP_Enter ||
- Fl::e_keysym == FL_Tab || Fl::e_keysym == FL_Escape || Fl::e_state&FL_META || Fl::e_state&FL_CTRL ) {
+ Fl::e_keysym == FL_Tab || Fl::e_keysym == FL_Escape || Fl::e_state&(FL_META | FL_CTRL) ) {
return 0;
}
+#else
+ unsigned char ascii = (unsigned)e_text[0];
+ if ((e_state & (FL_ALT | FL_META)) && !(ascii & 128)) return 0;
#endif
if(Fl::compose_state) {
del = 1;
Fl::compose_state = 0;
} else {
-#ifdef WIN32
+#ifndef __APPLE__
// Only insert non-control characters:
if (! (ascii & ~31 && ascii!=127)) { return 0; }
#endif
@@ -69,128 +76,6 @@ int Fl::compose(int& del) {
return 1;
}
-#else
-
-/** Any text editing widget should call this for each FL_KEYBOARD event.
- Use of this function is very simple.
-
- <p>If <i>true</i> is returned, then it has modified the
- Fl::event_text() and Fl::event_length() to a set of <i>bytes</i> to
- insert (it may be of zero length!). In will also set the "del"
- parameter to the number of <i>bytes</i> to the left of the cursor to
- delete, this is used to delete the results of the previous call to
- Fl::compose().
-
- <p>If <i>false</i> is returned, the keys should be treated as function
- keys, and del is set to zero. You could insert the text anyways, if
- you don't know what else to do.
-
- <p>Though the current implementation returns immediately, future
- versions may take quite awhile, as they may pop up a window or do
- other user-interface things to allow characters to be selected.
-*/
-int Fl::compose(int& del) {
-
- del = 0;
- unsigned char ascii = (unsigned)e_text[0];
-
- // Alt+letters are reserved for shortcuts. But alt+foreign letters
- // has to be allowed, because some key layouts require alt to be held
- // down in order to type them...
- //
- // OSX users sometimes need to hold down ALT for keys, so we only check
- // for META on OSX...
- if ((e_state & (FL_ALT|FL_META)) && !(ascii & 128)) return 0;
-
- if (compose_state == 1) { // after the compose key
- if ( // do not get distracted by any modifier keys
- e_keysym==FL_Shift_L||
- e_keysym==FL_Shift_R ||
- e_keysym==FL_Alt_L ||
- e_keysym==FL_Alt_R ||
- e_keysym==FL_Meta_L ||
- e_keysym==FL_Meta_R ||
- e_keysym==FL_Control_R ||
- e_keysym==FL_Control_L ||
- e_keysym==FL_Menu
- ) return 0;
-
- if (ascii == ' ') { // space turns into nbsp
- int len = fl_utf8encode(0xA0, e_text);
- e_text[len] = '\0';
- e_length = len;
- compose_state = 0;
- return 1;
- } else if (ascii < ' ' || ascii == 127) {
- compose_state = 0;
- return 0;
- }
-
- // see if it is either character of any pair:
- for (const char *p = compose_pairs; *p; p += 2)
- if (p[0] == ascii || p[1] == ascii) {
- if (p[1] == ' ') {
- int len = fl_utf8encode((p-compose_pairs)/2+0xA0, e_text);
- e_text[len] = '\0';
- e_length = len;
- }
-
- compose_state = ascii;
- return 1;
- }
-
- if (e_length) { // compose key also "quotes" control characters
- compose_state = 0;
- return 1;
- }
-
- } else if (compose_state) { // second character of compose
-
- char c1 = char(compose_state); // retrieve first character
- // now search for the pair in either order:
- for (const char *p = compose_pairs; *p; p += 2) {
- if ( (p[0] == ascii && p[1] == c1) || (p[1] == ascii && p[0] == c1)) {
- int len = fl_utf8encode((p-compose_pairs)/2+0xA0, e_text);
- e_text[len] = '\0';
- e_length = len;
- del = 1; // delete the old character and insert new one
- compose_state = 0;
- return 1;
- }
- }
-
- }
-
- int i = e_keysym;
-
- // See if they type the compose prefix key:
- if (i == FL_Control_R || i == 0xff20/* Multi-Key */) {
- compose_state = 1;
- return 1;
- }
-
- // See if they typed a dead key. This gets it into the same state as
- // typing prefix+accent:
- if (i >= 0xfe50 && i <= 0xfe5b) {
- ascii = e_text[0];
- for (const char *p = compose_pairs; *p; p += 2)
- if (p[0] == ascii ||
- (p[1] == ' ' && (p - compose_pairs) / 2 + 0xA0 == ascii)) {
- compose_state = p[0];
- return 1;
- }
- compose_state = 0;
- return 1;
- }
-
- // Only insert non-control characters:
- if (e_length && (ascii & ~31 && ascii!=127)) {compose_state = 0; return 1;}
-
- return 0;
-}
-
-#endif // __APPLE__ || WIN32
-
//
// End of "$Id$"
//
generated by cgit v1.2.3 (git 2.25.1) at 2026-02-08 12:01:34 +0000