Re: [Lcd4linux-devel] bold escape char

[Andrew T. <an...@fu...>]

Hi,


I have found one issue since posting the patch, the escape char is
counted in the string length despite not being displayed. I just set
the width for my text widget to be longer than the lcd width to
account for this.


Andrew

On 27 July 2011 17:43, Michael Reinelt <mi...@re...> wrote:
> 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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>> developers boost performance applications - including clusters.
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>> _______________________________________________
>> Lcd4linux-devel mailing list
>> Lcd...@li...
>> https://lists.sourceforge.net/lists/listinfo/lcd4linux-devel
>>
>>
>
> --
> Michael Reinelt <mi...@re...>
> http://home.pages.at/reinelt
> GPG-Key 0xDF13BA50
> ICQ #288386781
>