Re: [Lcd4linux-devel] bold escape char

[Michael R. <mi...@re...>]

Hi Andrew,

sorry for being *that* late :-(

thanks a lot for your patch, I really like the idea! Committed to trunk!

any volunteers to add documentation to the wiki?


Am 2011-05-18 00:41, schrieb Andrew Thompson:
> Hi,
>
>
> I have an application that writes out the lcd data to a file (as
> opposed to writing a custom plugin) and I need to make some words
> bold. I have hacked this up locally to make the ascii BEL char as a
> bold toggle.
>
> This works quite well for me so I am sharing it. The BEL char may not
> be a good choice vs. the proper ANSI escape sequences but is easier to
> implement.
>
>
> --- drv_generic_graphic.c.orig	2011-05-12 10:11:40.000000000 +1200
> +++ drv_generic_graphic.c	2011-05-18 10:13:51.000000000 +1200
> @@ -233,6 +233,7 @@
>   				       const char *style, const char *txt)
>   {
>       int c, r, x, y, len;
> +    int bold;
>
>       /* sanity checks */
>       if (layer<  0 || layer>= LAYERS) {
> @@ -249,10 +250,17 @@
>       c = col;
>
>       /* render text into layout FB */
> +    bold = 0;
>       while (*txt != '\0') {
>   	unsigned char *chr;
>
> -	if (strstr(style, "bold") != NULL) {
> +	/* magic char to toggle bold */
> +	if (*txt == '\a') {
> +		bold ^= 1;
> +		txt++;
> +		continue;
> +	}
> +	if (bold || strstr(style, "bold") != NULL) {
>   	    chr = Font_6x8_bold[(int) *(unsigned char *) txt];
>   	} else {
>   	    chr = Font_6x8[(int) *(unsigned char *) txt];
>
>
>
> The snippets from my lcd4linux.conf
>
> Layout picoLCDGraphic {
>    Row1 {
>      Col1 'status1'
>    }
>    Row2 {
>      Col1 'status2'
>    }
>     ...
> }
> Widget status1 {
>    class 'Text'
>    expression file::readline(statfile, currline)
>    width 42
>    update tick
> }
> Widget status2 {
>    class 'Text'
>    expression file::readline(statfile, currline+1)
>    width 42
>    update tick
> }
> ...
>
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-- 
Michael Reinelt <mi...@re...>
http://home.pages.at/reinelt
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