Initial implementation of 256 colour support for Irssi

This patch implements some 256 colour support for Irssi up from the
previous 16 colours. Initial parsing of the %x/%X format codes is
implemented and the parser accounts in advances the char* for
that.

The colour attributes are widened from 4 to 8 bit. The colour protocol
is changed to a new format. Some pointers to remaining work are
written in the comment in textbuffer.h.

Note that Irssi already does support requesting 256 colours from the
terminal in the original source code, so this part did not have to be
touched.

1 files changed, 28 insertions, 0 deletions

diff --git a/src/fe-text/textbuffer.h b/src/fe-text/textbuffer.h
index e5d78487..a94a06af 100644
--- a/src/fe-text/textbuffer.h
+++ b/src/fe-text/textbuffer.h
@@ -8,15 +8,20 @@
 #define LINE_COLOR_BG		0x20
 #define LINE_COLOR_DEFAULT	0x10
 
+/* command values (see _LINE_REC protocol) */
 enum {
 	LINE_CMD_EOL=0x80,	/* line ends here */
 	LINE_CMD_CONTINUE,	/* line continues in next block */
+	/* TODO: no longer needed */
 	LINE_CMD_COLOR0,	/* change to black, would be same as \0\0 but it breaks things.. */
 	LINE_CMD_UNDERLINE,	/* enable/disable underlining */
 	LINE_CMD_REVERSE,	/* enable/disable reversed text */
 	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_SELECT_FG,
+	LINE_CMD_SELECT_BG
+
 };
 
 typedef struct {
@@ -24,6 +29,7 @@ typedef struct {
 	time_t time;
 } LINE_INFO_REC;
 
+/* TODO: fixme. */
 typedef struct _LINE_REC {
 	/* Text in the line. \0 means that the next char will be a
 	   color or command.
@@ -38,6 +44,28 @@ typedef struct _LINE_REC {
 
 	   DO NOT ADD BLACK WITH \0\0 - this will break things. Use
 	   LINE_CMD_COLOR0 instead. */
+
+
+     /* NEW COLOUR PROTOCOL:
+
+	0x00 - indicates command or colour.
+	0x01 - command follows   (1 byte)
+	-- following may be omitted if LINE_CMD_USE_DEFAULT_[FB}G is set.
+	0x02 - BG colour follows (1 byte)
+	0x04 - FG colour follows (1 byte)
+
+	
+	Things that will need to be fixed:
+
+	* textbuffer-view.c:update_cmd_color()
+	* textbuffer-view.c:view_line_draw()
+	* textbuffer-view.c:view_update_line_cache()
+
+	* textbuffer.c:textbuffer_line2text()
+	* textbuffer.c:mark_temp_eol macro
+	
+	* gui-printtext.c ?
+      */
 	struct _LINE_REC *prev, *next;
 
 	unsigned char *text;