/* $Id: widget_text.c,v 1.16 2004/03/08 16:26:26 reinelt Exp $ * * simple text widget handling * * Copyright 2003,2004 Michael Reinelt * Copyright 2004 The LCD4Linux Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: widget_text.c,v $ * Revision 1.16 2004/03/08 16:26:26 reinelt * re-introduced \nnn (octal) characters in strings * text widgets can have a 'update' speed of 0 which means 'never' * (may be used for static content) * * Revision 1.15 2004/03/06 20:31:16 reinelt * Complete rewrite of the evaluator to get rid of the code * from mark Morley (because of license issues). * The new Evaluator does a pre-compile of expressions, and * stores them in trees. Therefore it should be reasonable faster... * * Revision 1.14 2004/03/03 03:47:04 reinelt * big patch from Martin Hejl: * - use qprintf() where appropriate * - save CPU cycles on gettimeofday() * - add quit() functions to free allocated memory * - fixed lots of memory leaks * * Revision 1.13 2004/02/18 06:39:20 reinelt * T6963 driver for graphic displays finished * * Revision 1.12 2004/02/09 19:49:38 nicowallmeier * Minor bugfix * * Revision 1.11 2004/01/30 20:57:56 reinelt * HD44780 patch from Martin Hejl * dmalloc integrated * * Revision 1.10 2004/01/29 04:40:03 reinelt * every .c file includes "config.h" now * * Revision 1.9 2004/01/23 04:54:04 reinelt * icon widget added (not finished yet!) * * Revision 1.8 2004/01/22 07:57:45 reinelt * several bugs fixed where segfaulting on layout>display * Crystalfontz driver optimized, 632 display already works * * Revision 1.7 2004/01/20 04:51:39 reinelt * moved generic stuff from drv_MatrixOrbital to drv_generic * implemented new-stylish bars which are nearly finished * * Revision 1.6 2004/01/15 07:47:02 reinelt * debian/ postinst and watch added (did CVS forget about them?) * evaluator: conditional expressions (a?b:c) added * text widget nearly finished * * Revision 1.5 2004/01/15 04:29:45 reinelt * moved lcd4linux.conf.sample to *.old * lcd4linux.conf.sample with new layout * new plugins 'loadavg' and 'meminfo' * text widget have pre- and postfix * * Revision 1.4 2004/01/14 11:33:00 reinelt * new plugin 'uname' which does what it's called * text widget nearly finished * first results displayed on Ma

# Sweden - Sörsjön
# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 546000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE

// get raw expression (we evaluate it ourselves) Text->expression = cfg_get_raw (section, "expression", "''"); Compile (Text->expression, &Text->tree); // field width, default 10 cfg_number (section, "width", 10, 0, 99999, &(Text->width)); // precision: number of digits after the decimal point (default: none) // Note: this is the *maximum* precision on small values, // for larger values the precision may be reduced to fit into the field width. // The default value 0xC0DE is used to distinguish between numbers and strings: // if no precision is given, the result is always treated as a string. If a // precision is specified, the result is treated as a number. cfg_number (section, "precision", 0xC0DE, 0, 80, &(Text->precision)); // field alignment: Left (default), Center, Right or Marquee c = cfg_get (section, "align", "L"); switch (toupper(*c)) { case 'L': Text->align=ALIGN_LEFT; break; case 'C': Text->align=ALIGN_CENTER; break; case 'R': Text->align=ALIGN_RIGHT; break; case 'M': Text->align=ALIGN_MARQUEE; break; default: error ("widget %s has unknown alignment '%s', using 'Left'", section, c); Text->align=ALIGN_LEFT; } free (c); // update interval (msec), default 1 sec, 0 stands for never cfg_number (section, "update", 1000, 0, 99999, &(Text->update)); // limit update interval to min 10 msec if (Text->update > 0 && Text->update < 10) Text->update = 10; // marquee scroller speed: interval (msec), default 500msec if (Text->align==ALIGN_MARQUEE) { cfg_number (section, "speed", 500, 10, 99999, &(Text->speed)); } // buffer Text->buffer=malloc(Text->width+1); free (section); Self->data=Text; // add update timer, use one-shot if 'update' is zero timer_add (widget_text_update, Self, Text->update, Text->update==0); // a marquee scroller has its own timer and callback if (Text->align==ALIGN_MARQUEE) { timer_add (widget_text_scroll, Self, Text->speed, 0); } return 0; } int widget_text_quit (WIDGET *Self) { WIDGET_TEXT *Text; if (Self) { Text=Self->data; if (Self->data) { if (Text->preval) free(Text->preval); if (Text->postval) free(Text->postval); if (Text->value) free(Text->value); if (Text->buffer) free(Text->buffer); free (Self->data); Self->data=NULL; } } return 0; } WIDGET_CLASS Widget_Text = { name: "text", init: widget_text_init, draw: NULL, quit: widget_text_quit, };