Ticket #3065: support of italic text.

Italic text is supported by S-Lang since pre2.3.0-107 and NCurses since 5.9.20130831.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

AUTHORS

@@ -61,6 +61,7 @@ Antonio Palama, DOS port <palama@posso.dm.unipi.it>
 
 Egmont Koblinger <egmont@gmail.com>
         Support of 256 colors
+        Support of italic text
         Support of extended mouse clicks beyond 223 column
         Support of bracketed paste mode of xterm
                 (http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Bracketed%20Paste%20Mode)

doc/man/mc.1.in

@@ -3609,7 +3609,7 @@ color16 to color255, or as rgb000 to rgb555 and gray0 to gray23. Example:
 base_color=normal=white,default:marked=magenta,default
 .fi
 .PP
-Attributes can be any of bold, underline, reverse and blink, appended by a
+Attributes can be any of bold, italic, underline, reverse and blink, appended by a
 plus sign if more than one are desired.  The special word "none" means no
 attributes, without attempting to fall back to base_color.  Example:
 .PP

doc/man/mcedit.1.in

@@ -439,7 +439,7 @@ uses the color before the slash.  See cooledit(1) for supported
 .B cooledit
 colors.
 .PP
-Attributes can be any of bold, underline, reverse and blink, appended by a
+Attributes can be any of bold, italic, underline, reverse and blink, appended by a
 plus sign if more than one are desired.
 .PP
 Comments may be put on a separate line starting with the hash sign (#).

doc/man/ru/mc.1.in

@@ -3999,7 +3999,7 @@ lightgray и white. Для прозрачного фона используют
 base_color=normal=white,default:marked=magenta,default
 .fi
 .PP
-Атрибуты обозначаются словами "bold", "underline", "reverse" и "blink".
+Атрибуты обозначаются словами "bold", "italic", "underline", "reverse" и "blink".
 Чтобы использовать несколько атрибутов, их надо перечислить через символ "+".
 The special word "none" menas no attributes, without attempting to fall back
 to base_color. Пример:

lib/tty/color-internal.c

@@ -83,6 +83,9 @@ mc_tty_color_table_t const color_table[] = {
 
 mc_tty_color_table_t const attributes_table[] = {
     {"bold", A_BOLD},
+#ifdef A_ITALIC                 /* available since ncurses-5.9-20130831 / slang-pre2.3.0-107 */
+    {"italic", A_ITALIC},
+#endif /* A_ITALIC */
     {"underline", A_UNDERLINE},
     {"reverse", A_REVERSE},
     {"blink", A_BLINK},

lib/tty/color-slang.h

@@ -11,12 +11,17 @@
 /*** typedefs(not structures) and defined constants **********************************************/
 
 /* When using Slang with color, we have all the indexes free but
- * those defined here (A_BOLD, A_UNDERLINE, A_REVERSE, A_BLINK)
+ * those defined here (A_BOLD, A_ITALIC, A_UNDERLINE, A_REVERSE, A_BLINK)
  */
 
 #ifndef A_BOLD
 #define A_BOLD SLTT_BOLD_MASK
 #endif /* A_BOLD */
+#ifdef SLTT_ITALIC_MASK         /* available since slang-pre2.3.0-107 */
+#ifndef A_ITALIC
+#define A_ITALIC SLTT_ITALIC_MASK
+#endif /* A_ITALIC */
+#endif /* SLTT_ITALIC_MASK */
 #ifndef A_UNDERLINE
 #define A_UNDERLINE SLTT_ULINE_MASK
 #endif /* A_UNDERLINE */

misc/skins/sand256.ini

@@ -47,9 +47,12 @@
 #
 # Following the foreground and background colors, the third (optional) value
 # can specify special attributes to enable. Valid values are bold, underline,
-# reverse and blink. Append more with a plus sign, e.g. "underline+bold".
+# italic, reverse and blink. Append more with a plus sign, e.g. "bold+italic".
 # Leaving the field empty makes it fall back to the attributes of _default_.
 # Use any other word (e.g. "none") to prevent fallback and disable all flags.
+#
+# Italic support requires a recent enough ncurses (>= 5.9.20130831) or slang
+# (>= 2.3). All attributes are subject to support by the terminal emulator.
 
 [skin]
     description = Sand skin using 256 colors
@@ -81,8 +84,8 @@
 [core]
     _default_ = black;rgb554
     selected = ;rgb452
-    marked = rgb400
-    markselect = rgb400;rgb452
+    marked = rgb400;;italic
+    markselect = rgb400;rgb452;italic
     gauge = ;rgb452
     input = ;rgb452
     inputunchanged = gray;rgb452
@@ -90,14 +93,14 @@
     disabled = gray;rgb553
     reverse = ;rgb452
     commandlinemark = white;gray
-    header = red
+    header = red;;italic
 
 [dialog]
     _default_ = black;rgb553
     dfocus = ;rgb452
     dhotnormal = ;;underline
     dhotfocus = ;rgb452;underline
-    dtitle = ;;underline
+    dtitle = ;;italic+underline
 
 [error]
     _default_ = rgb554;rgb320;bold
@@ -105,7 +108,7 @@
     errdfocus = rgb000;rgb452;bold
     errdhotnormal = ;;bold+underline
     errdhotfocus = rgb000;rgb452;bold+underline
-    errdtitle = ;;bold+underline
+    errdtitle = ;;bold+italic+underline
 
 [filehighlight]
     directory =
@@ -126,28 +129,28 @@
     database = rgb421
 
 [menu]
-    _default_ = black;rgb452
+    _default_ = black;rgb452;italic
     menusel = ;rgb551
-    menuhot = ;;underline
-    menuhotsel = ;rgb551;underline
+    menuhot = ;;italic+underline
+    menuhotsel = ;rgb551;italic+underline
     menuinactive =
 
 [popupmenu]
     _default_ = black;rgb553
     menusel = ;rgb452;underline
-    menutitle = ;;underline
+    menutitle = ;;italic+underline
 
 [buttonbar]
-    hotkey = black;rgb554
-    button = black;rgb452
+    hotkey = black;rgb554;italic
+    button = black;rgb452;italic
 
 [statusbar]
-    _default_ = black;rgb452
+    _default_ = black;rgb452;italic
 
 [help]
     _default_ = black;rgb553
-    helpitalic = green
-    helpbold = red
+    helpitalic = green;;italic
+    helpbold = red;;bold
     helplink = blue;;underline
     helpslink = blue;;reverse
     helptitle = ;;underline
@@ -155,7 +158,7 @@
 [editor]
     _default_ = black;rgb554
     editbold = rgb400
-    editmarked = ;rgb452
+    editmarked = ;rgb452;italic
     editwhitespace = rgb400;rgb553
     editlinestate = ;rgb553
     bookmark = ;rgb551

src/args.c

@@ -369,7 +369,7 @@ mc_args_new_color_group (void)
                                                     "Extended colors, when 256 colors are available:\n"
                                                     "   color16 to color255, or rgb000 to rgb555 and gray0 to gray23\n\n"
                                                     "Attributes:\n"
-                                                    "   bold, underline, reverse, blink; append more with '+'\n")
+                                                    "   bold, italic, underline, reverse, blink; append more with '+'\n")
                                                     );
 /* *INDENT-ON* */