Merge pull request #58 from ailin-nemui/italics

Implement italics support for Irssi

docs/formats.txt

@@ -23,6 +23,7 @@
    %U                      Underline on/off
    %8                      Reverse on/off
    %9      %_              Bold on/off
+   %I                      Italic on/off
    %:                      Insert newline
    %|                      Marks the indentation position
    %#                      Monospace font on/off (useful with lists and GUI)

src/fe-common/core/fe-messages.c

@@ -45,16 +45,19 @@
 
 GHashTable *printnicks;
 
-/* convert _underlined_ and *bold* words (and phrases) to use real
+/* convert _underlined_, /italics/, and *bold* words (and phrases) to use real
    underlining or bolding */
 char *expand_emphasis(WI_ITEM_REC *item, const char *text)
 {
 	GString *str;
 	char *ret;
 	int pos;
+	int emphasis_italics;
 
         g_return_val_if_fail(text != NULL, NULL);
 
+	emphasis_italics = settings_get_bool("emphasis_italics");
+
 	str = g_string_new(text);
 
 	for (pos = 0; pos < str->len; pos++) {
@@ -62,9 +65,11 @@ char *expand_emphasis(WI_ITEM_REC *item, const char *text)
 
 		bgn = str->str + pos;
 
-		if (*bgn == '*') 
+		if (*bgn == '*')
 			type = 2; /* bold */
-		else if (*bgn == '_') 
+		else if (*bgn == '/' && emphasis_italics)
+			type = 29; /* italics */
+		else if (*bgn == '_')
 			type = 31; /* underlined */
 		else
 			continue;
@@ -92,7 +97,7 @@ char *expand_emphasis(WI_ITEM_REC *item, const char *text)
                         found = nicklist_find(CHANNEL(item), bgn) != NULL;
 			end[1] = c;
 			if (found) continue;
-			
+
 			/* check if the whole 'word' (e.g. "_foo_^") is a nick
 			   in "_foo_^ ", end will be the second _, end2 the ^ */
 			end2 = end;
@@ -680,6 +685,7 @@ void fe_messages_init(void)
 	settings_add_bool("lookandfeel", "emphasis", TRUE);
 	settings_add_bool("lookandfeel", "emphasis_replace", FALSE);
 	settings_add_bool("lookandfeel", "emphasis_multiword", FALSE);
+	settings_add_bool("lookandfeel", "emphasis_italics", FALSE);
 	settings_add_bool("lookandfeel", "show_nickmode", TRUE);
 	settings_add_bool("lookandfeel", "show_nickmode_empty", TRUE);
 	settings_add_bool("lookandfeel", "print_active_channel", FALSE);

src/fe-common/core/formats.c

@@ -207,6 +207,11 @@ int format_expand_styles(GString *out, const char **format, int *flags)
 		g_string_append_c(out, 4);
 		g_string_append_c(out, FORMAT_STYLE_REVERSE);
 		break;
+	case 'I':
+		/* italic */
+		g_string_append_c(out, 4);
+		g_string_append_c(out, FORMAT_STYLE_ITALIC);
+		break;
 	case ':':
 		/* Newline */
 		g_string_append_c(out, '\n');
@@ -913,6 +918,14 @@ static const char *get_ansi_color(THEME_REC *theme, const char *str,
 			/* normal */
 			flags &= ~GUI_PRINT_FLAG_BOLD;
 			break;
+		case 3:
+			/* italic */
+			flags |= GUI_PRINT_FLAG_ITALIC;
+			break;
+		case 23:
+			/* not italic */
+			flags &= ~GUI_PRINT_FLAG_ITALIC;
+			break;
 		case 4:
 			/* underline */
 			flags |= GUI_PRINT_FLAG_UNDERLINE;
@@ -1085,7 +1098,7 @@ static void get_mirc_color(const char **str, int *fg_ret, int *bg_ret)
 
 #define IS_COLOR_CODE(c) \
 	((c) == 2 || (c) == 3 || (c) == 4 || (c) == 6 || (c) == 7 || \
-	(c) == 15 || (c) == 22 || (c) == 27 || (c) == 31)
+	(c) == 15 || (c) == 22 || (c) == 27 || (c) == 29 || (c) == 31)
 
 /* Return how many characters in `str' must be skipped before `len'
    characters of text is skipped. */
@@ -1282,6 +1295,9 @@ void format_send_to_gui(TEXT_DEST_REC *dest, const char *text)
 			case FORMAT_STYLE_REVERSE:
 				flags ^= GUI_PRINT_FLAG_REVERSE;
 				break;
+			case FORMAT_STYLE_ITALIC:
+				flags ^= GUI_PRINT_FLAG_ITALIC;
+				break;
 			case FORMAT_STYLE_MONOSPACE:
 				flags ^= GUI_PRINT_FLAG_MONOSPACE;
 				break;
@@ -1356,6 +1372,11 @@ void format_send_to_gui(TEXT_DEST_REC *dest, const char *text)
 			if (!hide_text_style)
 				flags ^= GUI_PRINT_FLAG_REVERSE;
 			break;
+		case 29:
+			/* italic */
+			if (!hide_text_style)
+				flags ^= GUI_PRINT_FLAG_ITALIC;
+			break;
 		case 31:
 			/* underline */
 			if (!hide_text_style)

src/fe-common/core/formats.h

@@ -10,6 +10,7 @@
 #define GUI_PRINT_FLAG_BLINK         0x0008
 #define GUI_PRINT_FLAG_MIRC_COLOR    0x0010
 #define GUI_PRINT_FLAG_INDENT        0x0020
+#define GUI_PRINT_FLAG_ITALIC        0x0040
 #define GUI_PRINT_FLAG_NEWLINE       0x0080
 #define GUI_PRINT_FLAG_CLRTOEOL      0x0100
 #define GUI_PRINT_FLAG_MONOSPACE     0x0200
@@ -139,6 +140,7 @@ void format_send_to_gui(TEXT_DEST_REC *dest, const char *text);
 #define FORMAT_STYLE_BOLD	(0x03 + FORMAT_STYLE_SPECIAL)
 #define FORMAT_STYLE_REVERSE	(0x04 + FORMAT_STYLE_SPECIAL)
 #define FORMAT_STYLE_INDENT	(0x05 + FORMAT_STYLE_SPECIAL)
+#define FORMAT_STYLE_ITALIC	(0x06 + FORMAT_STYLE_SPECIAL)
 #define FORMAT_STYLE_DEFAULTS	(0x07 + FORMAT_STYLE_SPECIAL)
 #define FORMAT_STYLE_CLRTOEOL	(0x08 + FORMAT_STYLE_SPECIAL)
 #define FORMAT_STYLE_MONOSPACE	(0x09 + FORMAT_STYLE_SPECIAL)

src/fe-text/gui-printtext.c

@@ -186,6 +186,7 @@ static void get_colors(int flags, int *fg, int *bg, int *attr)
 		*attr |= (*bg << BG_SHIFT);
 
 	if (flags & GUI_PRINT_FLAG_REVERSE) *attr |= ATTR_REVERSE;
+	if (flags & GUI_PRINT_FLAG_ITALIC) *attr |= ATTR_ITALIC;
 	if (flags & GUI_PRINT_FLAG_BOLD) *attr |= ATTR_BOLD;
 	if (flags & GUI_PRINT_FLAG_UNDERLINE) *attr |= ATTR_UNDERLINE;
 	if (flags & GUI_PRINT_FLAG_BLINK) *attr |= ATTR_BLINK;

src/fe-text/term-curses.c

@@ -298,6 +298,9 @@ static int get_attr(int color)
 
 	if (color & ATTR_UNDERLINE) attr |= A_UNDERLINE;
 	if (color & ATTR_REVERSE) attr |= A_REVERSE;
+#ifdef A_ITALIC
+	if (color & ATTR_ITALIC) attr |= A_ITALIC;
+#endif
         return attr;
 }
 

src/fe-text/term-terminfo.c

@@ -346,12 +346,16 @@ void term_set_color(TERM_WINDOW *window, int col)
 #endif
 		((col & BG_MASK) >> BG_SHIFT);
 
+	if (!term_use_colors && bg > 0)
+		col |= ATTR_REVERSE;
+
         set_normal = ((col & ATTR_RESETFG) && last_fg != COLOR_RESET) ||
 		((col & ATTR_RESETBG) && last_bg != COLOR_RESET);
 	if (((last_attrs & ATTR_BOLD) && (col & ATTR_BOLD) == 0) ||
+	    ((last_attrs & ATTR_REVERSE) && (col & ATTR_REVERSE) == 0) ||
 	    ((last_attrs & ATTR_BLINK) && (col & ATTR_BLINK) == 0)) {
-		/* we'll need to get rid of bold/blink - this can only be
+		/* we'll need to get rid of bold/blink/reverse - this
-		   done with setting the default color */
+		   can only be done with setting the default color */
 		set_normal = TRUE;
 	}
 
@@ -361,16 +365,6 @@ void term_set_color(TERM_WINDOW *window, int col)
 		terminfo_set_normal();
 	}
 
-	if (!term_use_colors && bg > 0)
-		col |= ATTR_REVERSE;
-
-	/* reversed text (use standout) */
-	if (col & ATTR_REVERSE) {
-		if ((last_attrs & ATTR_REVERSE) == 0)
-			terminfo_set_standout(TRUE);
-	} else if (last_attrs & ATTR_REVERSE)
-		terminfo_set_standout(FALSE);
-
 	/* set foreground color */
 	if (fg != last_fg &&
 	    (fg != 0 || (col & ATTR_RESETFG) == 0)) {
@@ -400,6 +394,10 @@ void term_set_color(TERM_WINDOW *window, int col)
 		}
 	}
 
+	/* reversed text */
+	if (col & ATTR_REVERSE)
+		terminfo_set_reverse();
+
 	/* bold */
 	if (window && (term_color256map[fg&0xff]&8) == window->term->TI_colors)
 		col |= ATTR_BOLD;
@@ -413,6 +411,13 @@ void term_set_color(TERM_WINDOW *window, int col)
 	} else if (last_attrs & ATTR_UNDERLINE)
 		terminfo_set_uline(FALSE);
 
+	/* italic */
+	if (col & ATTR_ITALIC) {
+		if ((last_attrs & ATTR_ITALIC) == 0)
+			terminfo_set_italic(TRUE);
+	} else if (last_attrs & ATTR_ITALIC)
+		terminfo_set_italic(FALSE);
+
 	/* update the new attribute settings whilst ignoring color values.  */
 	last_attrs = col & ~( BG_MASK | FG_MASK );
 }
@@ -516,7 +521,7 @@ void term_clrtoeol(TERM_WINDOW *window)
 {
 	/* clrtoeol() doesn't necessarily understand colors */
 	if (last_fg == -1 && last_bg == -1 &&
-	    (last_attrs & (ATTR_UNDERLINE|ATTR_REVERSE)) == 0) {
+	    (last_attrs & (ATTR_UNDERLINE|ATTR_REVERSE|ATTR_ITALIC)) == 0) {
 		if (!term_lines_empty[vcy]) {
 			if (vcmove) term_move_real();
 			terminfo_clrtoeol();

src/fe-text/term.h

@@ -14,12 +14,13 @@ typedef struct _TERM_WINDOW TERM_WINDOW;
 #define ATTR_BLINK	( 0x080000 )
 #define ATTR_UNDERLINE	( 0x100000 )
 #define ATTR_REVERSE	( 0x200000 )
-#define ATTR_FGCOLOR24	( 0x400000 )
+#define ATTR_ITALIC	( 0x400000 )
-#define ATTR_BGCOLOR24	( 0x800000 )
+#define ATTR_FGCOLOR24	( 0x1000000 )
+#define ATTR_BGCOLOR24	( 0x2000000 )
 
 #define ATTR_RESET	(ATTR_RESETFG|ATTR_RESETBG)
 
-#define ATTR_NOCOLORS (ATTR_UNDERLINE|ATTR_REVERSE|ATTR_BLINK|ATTR_BOLD)
+#define ATTR_NOCOLORS (ATTR_UNDERLINE|ATTR_REVERSE|ATTR_BLINK|ATTR_BOLD|ATTR_ITALIC)
 
 /* terminal types */
 #define TERM_TYPE_8BIT		0 /* normal 8bit text */

src/fe-text/terminfo-core.c

@@ -94,8 +94,11 @@ static TERMINFO_REC tcaps[] = {
 	{ "rmul",     	"ue",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_rmul) },
 	{ "smso",     	"so",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_smso) },
 	{ "rmso",     	"se",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_rmso) },
+	{ "sitm",     	"ZH",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_sitm) },
+	{ "ritm",     	"ZR",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_ritm) },
 	{ "bold",     	"md",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_bold) },
 	{ "blink",     	"mb",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_blink) },
+	{ "rev",     	"mr",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_rev) },
 	{ "setaf",     	"AF",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_setaf) },
 	{ "setab",     	"AB",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_setab) },
 	{ "setf",     	"Sf",	CAP_TYPE_STR,	G_STRUCT_OFFSET(TERM_REC, TI_setf) },
@@ -313,6 +316,12 @@ static void _set_blink(TERM_REC *term)
 	tput(tparm(term->TI_blink));
 }
 
+/* Reverse on */
+static void _set_reverse(TERM_REC *term)
+{
+	tput(tparm(term->TI_rev));
+}
+
 /* Bold on */
 static void _set_bold(TERM_REC *term)
 {
@@ -331,6 +340,18 @@ static void _set_standout(TERM_REC *term, int set)
 	tput(tparm(set ? term->TI_smso : term->TI_rmso));
 }
 
+/* Italic on/off */
+static void _set_italic(TERM_REC *term, int set)
+{
+	tput(tparm(set ? term->TI_sitm : term->TI_ritm));
+}
+
+/* Standout on (fallback for reverse) */
+static void _set_standout_on(TERM_REC *term)
+{
+	_set_standout(term, TRUE);
+}
+
 inline static int color256(const TERM_REC *term, const int color) {
 	if (color < term->TI_colors)
 		return color;
@@ -609,13 +630,17 @@ static int term_setup(TERM_REC *term)
 	else
 		term->repeat = _repeat_manual;
 
-	/* Bold, underline, standout */
+	/* Bold, underline, standout, reverse, italics */
 	term->set_blink = term->TI_blink ? _set_blink : _ignore;
 	term->set_bold = term->TI_bold ? _set_bold : _ignore;
+	term->set_reverse = term->TI_rev ? _set_reverse :
+		term->TI_smso ? _set_standout_on : _ignore;
 	term->set_uline = term->TI_smul && term->TI_rmul ?
 		_set_uline : _ignore_parm;
 	term->set_standout = term->TI_smso && term->TI_rmso ?
 		_set_standout : _ignore_parm;
+	term->set_italic = term->TI_sitm && term->TI_ritm ?
+		_set_italic : _ignore_parm;
 
         /* Create a string to set all attributes off */
         str = g_string_new(NULL);
@@ -625,6 +650,8 @@ static int term_setup(TERM_REC *term)
 		g_string_append(str, term->TI_rmul);
 	if (term->TI_rmso && (term->TI_sgr0 == NULL || strcmp(term->TI_rmso, term->TI_sgr0) != 0))
 		g_string_append(str, term->TI_rmso);
+	if (term->TI_ritm && (term->TI_sgr0 == NULL || strcmp(term->TI_ritm, term->TI_sgr0) != 0))
+		g_string_append(str, term->TI_ritm);
         term->TI_normal = str->str;
 	g_string_free(str, FALSE);
         term->set_normal = _set_normal;

src/fe-text/terminfo-core.h

@@ -16,6 +16,8 @@
 #define terminfo_set_bold() current_term->set_bold(current_term)
 #define terminfo_set_uline(set) current_term->set_uline(current_term, set)
 #define terminfo_set_standout(set) current_term->set_standout(current_term, set)
+#define terminfo_set_reverse() current_term->set_reverse(current_term)
+#define terminfo_set_italic(set) current_term->set_italic(current_term, set)
 #define terminfo_is_colors_set(term) (term->TI_fg != NULL)
 #define terminfo_beep(term) current_term->beep(current_term)
 
@@ -37,8 +39,10 @@ struct _TERM_REC {
 	void (*set_normal)(TERM_REC *term);
 	void (*set_blink)(TERM_REC *term);
 	void (*set_bold)(TERM_REC *term);
+	void (*set_reverse)(TERM_REC *term);
 	void (*set_uline)(TERM_REC *term, int set);
 	void (*set_standout)(TERM_REC *term, int set);
+	void (*set_italic)(TERM_REC *term, int set);
 
         void (*beep)(TERM_REC *term);
 
@@ -74,8 +78,9 @@ struct _TERM_REC {
 	int TI_colors; /* numbers of colors in TI_fg[] and TI_bg[] */
 	const char *TI_sgr0; /* turn off all attributes */
 	const char *TI_smul, *TI_rmul; /* underline on/off */
-        const char *TI_smso, *TI_rmso; /* standout on/off */
+	const char *TI_smso, *TI_rmso; /* standout on/off */
-        const char *TI_bold, *TI_blink;
+	const char *TI_sitm, *TI_ritm; /* italic on/off */
+	const char *TI_bold, *TI_blink, *TI_rev;
 	const char *TI_setaf, *TI_setab, *TI_setf, *TI_setb;
 
         /* Colors - generated and dynamically allocated */

src/fe-text/textbuffer-view.c

@@ -143,6 +143,9 @@ static void update_cmd_color(unsigned char cmd, int *color)
 	case LINE_CMD_BOLD:
 		*color ^= ATTR_BOLD;
 		break;
+	case LINE_CMD_ITALIC:
+		*color ^= ATTR_ITALIC;
+		break;
 	case LINE_CMD_COLOR0:
 		*color &= BGATTR;
 		*color &= ~ATTR_FGCOLOR24;

src/fe-text/textbuffer.c

@@ -322,6 +322,10 @@ void textbuffer_line_add_colors(TEXT_BUFFER_REC *buffer, LINE_REC **line,
 		data[pos++] = 0;
 		data[pos++] = LINE_CMD_BOLD;
 	}
+	if ((flags & GUI_PRINT_FLAG_ITALIC) != (buffer->last_flags & GUI_PRINT_FLAG_ITALIC)) {
+		data[pos++] = 0;
+		data[pos++] = LINE_CMD_ITALIC;
+	}
 	if (flags & GUI_PRINT_FLAG_INDENT) {
 		data[pos++] = 0;
 		data[pos++] = LINE_CMD_INDENT;
@@ -501,6 +505,10 @@ void textbuffer_line2text(LINE_REC *line, int coloring, GString *str)
 			g_string_append_printf(str, "\004%c",
 					  FORMAT_STYLE_BOLD);
 			break;
+		case LINE_CMD_ITALIC:
+			g_string_append_printf(str, "\004%c",
+					  FORMAT_STYLE_ITALIC);
+			break;
 		case LINE_CMD_COLOR0:
 			g_string_append_printf(str, "\004%c%c",
 					  '0', FORMAT_COLOR_NOCHANGE);

src/fe-text/textbuffer.h

@@ -17,6 +17,7 @@ enum {
 	LINE_CMD_INDENT,	/* if line is split, indent it at this position */
 	LINE_CMD_BLINK,		/* enable/disable blink */
 	LINE_CMD_BOLD,		/* enable/disable bold */
+	LINE_CMD_ITALIC,	/* enable/disable italic */
 	LINE_COLOR_EXT,		/* extended color */
 	LINE_COLOR_EXT_BG,	/* extended bg */
 #ifdef TERM_TRUECOLOR