dtv-scan-tables.git - Digital TV scan tables

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Diffstat (limited to 'dvb-t/fr-Angers')

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1 files changed, 25 insertions, 0 deletions

/* $Id: widget_text.c,v 1.22 2005/05/08 04:32:45 reinelt Exp $ * * simple text widget handling * * Copyright (C) 2003, 2004 Michael Reinelt <reinelt@eunet.at> * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> * * 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 1.22 2005/05/08 04:32:45 reinelt * CodingStyle added and applied * * Revision 1.21 2005/01/18 06:30:24 reinelt * added (C) to all copyright statements * * Revision 1.20 2004/11/29 04:42:07 reinelt * removed the 99999 msec limit on widget update time (thanks to Petri Damsten) * * Revision 1.19 2004/06/26 12:05:00 reinelt * * uh-oh... the last CVS log message messed up things a lot... * * Revision 1.18 2004/06/26 09:27:21 reinelt * * added '-W' to CFLAGS * changed all C++ comments to C ones * cleaned up a lot of signed/unsigned mistakes * * Revision 1.17 2004/03/11 06:39:59 reinelt * big patch from Martin: * - reuse filehandles * - memory leaks fixed * - earlier busy-flag checking with HD44780 * - reuse memory for strings in RESULT and hash * - netdev_fast to wavid time-consuming regex * * 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 MatrixOrbital * * Revision 1.3 2004/01/13 08:18:20 reinelt * timer queues added * liblcd4linux deactivated turing transformation to new layout * * Revision 1.2 2004/01/11 18:26:02 reinelt * further widget and layout processing * * Revision 1.1 2004/01/10 20:22:33 reinelt * added new function 'cfg_list()' (not finished yet) * added layout.c (will replace processor.c someday) * added widget_text.c (will be the first and most important widget) * modified lcd4linux.c so that old-style configs should work, too * */ /* * exported functions: * * WIDGET_CLASS Widget_Text * a simple text widget which * must be supported by all displays * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <ctype.h> #include "debug.h" #include "cfg.h" #include "evaluator.h" #include "timer.h" #include "widget.h" #include "widget_text.h" #ifdef WITH_DMALLOC #include <dmalloc.h> #endif void widget_text_scroll(void *Self) { WIDGET *W = (WIDGET *) Self; WIDGET_TEXT *T = W->data; int num, len, width, pad; char *src, *dst; num = 0; len = strlen(T->value); width = T->width - strlen(T->preval) - strlen(T->postval); if (width < 0) width = 0; switch (T->align) { case ALIGN_LEFT: pad = 0; break; case ALIGN_CENTER: pad = (width - len) / 2; if (pad < 0) pad = 0; break; case ALIGN_RIGHT: pad = width - len; if (pad < 0) pad = 0; break; case ALIGN_MARQUEE: pad = width - T->scroll; T->scroll++; if (T->scroll >= width + len) T->scroll = 0; break; default: /* not reached */ pad = 0; } dst = T->buffer; /* process prefix */ src = T->preval; while (num < T->width) { if (*src == '\0') break; *(dst++) = *(src++); num++; } src = T->value; /* pad blanks on the beginning */ while (pad > 0 && num < T->width) { *(dst++) = ' '; num++; pad--; } /* skip src chars (marquee) */ while (pad < 0) { src++; pad++; } /* copy content */ while (num < T->width) { if (*src == '\0') break; *(dst++) = *(src++); num++; } /* pad blanks on the end */ src = T->postval; len = strlen(src); while (num < T->width - len) { *(dst++) = ' '; num++; } /* process postfix */ while (num < T->width) { if (*src == '\0') break; *(dst++) = *(src++); num++; } *dst = '\0'; /* finally, draw it! */ if (W->class->draw) W->class->draw(W); } void widget_text_update(void *Self) { WIDGET *W = (WIDGET *) Self; WIDGET_TEXT *T = W->data; RESULT result = { 0, 0, 0, NULL }; char *preval, *postval, *value; int update; /* evaluate prefix */ if (T->pretree != NULL) { Eval(T->pretree, &result); preval = strdup(R2S(&result)); DelResult(&result); } else { preval = strdup(""); } /* evaluate postfix */ if (T->posttree != NULL) { Eval(T->posttree, &result); postval = strdup(R2S(&result)); DelResult(&result); } else { postval = strdup(""); } /* evaluate expression */ Eval(T->tree, &result); /* string or number? */ if (T->precision == 0xC0DE) { value = strdup(R2S(&result)); } else { double number = R2N(&result); int width = T->width - strlen(preval) - strlen(postval); int precision = T->precision; /* print zero bytes so we can specify NULL as target */ /* and get the length of the resulting string */ int size = snprintf(NULL, 0, "%.*f", precision, number); /* number does not fit into field width: try to reduce precision */ if (width < 0) width = 0; if (size > width && precision > 0) { int delta = size - width; if (delta > precision) delta = precision; precision -= delta; size -= delta; /* zero precision: omit decimal point, too */ if (precision == 0) size--; } /* number still doesn't fit: display '*****' */ if (size > width) { value = malloc(width + 1); memset(value, '*', width); *(value + width) = '\0'; } else { value = malloc(size + 1); snprintf(value, size + 1, "%.*f", precision, number); } } DelResult(&result); update = 0; /* prefix changed? */ if (T->preval == NULL || strcmp(T->preval, preval) != 0) { update = 1; if (T->preval) free(T->preval); T->preval = preval; T->scroll = 0; /* reset marquee counter */ } else { free(preval); } /* postfix changed? */ if (T->postval == NULL || strcmp(T->postval, postval) != 0) { update = 1; if (T->postval) free(T->postval); T->postval = postval; T->scroll = 0; /* reset marquee counter */ } else { free(postval); } /* value changed? */ if (T->value == NULL || strcmp(T->value, value) != 0) { update = 1; if (T->value) free(T->value); T->value = value; T->scroll = 0; /* reset marquee counter */ } else { free(value); } /* something has changed and should be updated */ if (update) { /* if there's a marquee scroller active, it has its own */ /* update callback timer, so we do nothing here; otherwise */ /* we simply call this scroll callback directly */ if (T->align != ALIGN_MARQUEE) { widget_text_scroll(Self); } } } int widget_text_init(WIDGET * Self) { char *section; char *c; WIDGET_TEXT *Text; /* prepare config section */ /* strlen("Widget:")=7 */ section = malloc(strlen(Self->name) + 8); strcpy(section, "Widget:"); strcat(section, Self->name); Text = malloc(sizeof(WIDGET_TEXT)); memset(Text, 0, sizeof(WIDGET_TEXT)); /* get raw pre- and postfix (we evaluate it ourselves) */ Text->prefix = cfg_get_raw(section, "prefix", NULL); Text->postfix = cfg_get_raw(section, "postfix", NULL); /* compile pre- and postfix */ Compile(Text->prefix, &Text->pretree); Compile(Text->postfix, &Text->posttree); /* 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, -1, &(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, -1, &(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, -1, &(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) { DelTree(Text->pretree); DelTree(Text->posttree); DelTree(Text->tree); 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, };


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