/* $Id$ * $URL$ * * bar widget handling * * Copyright (C) 2003, 2004 Michael Reinelt * Copyright (C) 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. * */ /* * exported functions: * * WIDGET_CLASS Widget_Bar * the bar widget * */ #include "config.h" #include #include #include #include #include "debug.h" #include "cfg.h" #include "property.h" #include "timer_group.h" #include "widget.h" #include "widget_bar.h" #ifdef WITH_DMALLOC #include #endif void widget_bar_update(void *Self) { WIDGET *W = (WIDGET *) Self; WIDGET_BAR *Bar = W->data; double val1, val2; double min, max; /* evaluate properties */ property_eval(&Bar->expression1); val1 = P2N(&Bar->expression1); if (property_valid(&Bar->expression2)) { property_eval(&Bar->expression2); val2 = P2N(&Bar->expression2); } else { val2 = val1; } /* minimum: if expression is empty, do auto-scaling */ if (property_valid(&Bar->expr_min)) { property_eval(&Bar->expr_min); min = P2N(&Bar->expr_min); } else { min = Bar->min; if (val1 < min) { min = val1; } if (val2 < min) { min = val2; } } /* maximum: if expression is empty, do auto-scaling */ if (property_valid(&Bar->expr_max)) { property_eval(&Bar->expr_max); max = P2N(&Bar->expr_max); } else { max = Bar->max; if (val1 > max) { max = val1; } if (val2 > max) { max = val2; } } /* debugging */ if (Bar->min != min || Bar->max != max) { debug("Bar '%s': new scale %G - %G", W->name, min, max); } /* calculate bar values */ Bar->min = min; Bar->max = max; if (max > min) { Bar->val1 = (val1 - min) / (max - min); Bar->val2 = (val2 - min) / (max - min); } else { Bar->val1 = 0.0; Bar->val2 = 0.0; } /* finally, draw it! */ if (W->class->draw) W->class->draw(W); } int widget_bar_init(WIDGET * Self) { char *section; char *c; WIDGET_BAR *Bar; /* prepare config section */ /* strlen("Widget:")=7 */ section = malloc(strlen(Self->name) + 8); strcpy(section, "Widget:"); strcat(section, Self->name); Bar = malloc(sizeof(WIDGET_BAR)); memset(Bar, 0, sizeof(WIDGET_BAR)); /* load properties */ property_load(section, "expression", NULL, &Bar->expression1); property_load(section, "expression2", NULL, &Bar->expression2); property_load(section, "min", NULL, &Bar->expr_min); property_load(section, "max", NULL, &Bar->expr_max); /* sanity checks */ if (!property_valid(&Bar->expression1)) { error("Warning: widget %s has no expression", section); } /* bar length, default 1 */ cfg_number(section, "length", 1, 0, -1, &(Bar->length)); /* direction: East (default), West, North, South */ c = cfg_get(section, "direction", "E"); switch (toupper(*c)) { case 'E': Bar->direction = DIR_EAST; Self->x2 = Self->col + Bar->length - 1; Self->y2 = Self->row; break; case 'W': Bar->direction = DIR_WEST; Self->x2 = Self->col + Bar->length - 1; Self->y2 = Self->row; break; case 'N': Bar->direction = DIR_NORTH; Self->x2 = Self->col; Self->y2 = Self->row + Bar->length - 1; break; case 'S': Bar->direction = DIR_SOUTH; Self->x2 = Self->col; Self->y2 = Self->row + Bar->length - 1; break; default: error("widget %s has unknown direction '%s'; known directions: 'E', 'W', 'N', 'S'; using 'E(ast)'", Self->name, c); Bar->direction = DIR_EAST; } free(c); /* style: none (default), hollow */ c = cfg_get(section, "style", "0"); switch (toupper(*c)) { case 'H': Bar->style = STYLE_HOLLOW; break; case '0': Bar->style = 0; break; default: error("widget %s has unknown style '%s'; known styles: '0' or 'H'; using '0'", Self->name, c); Bar->style = 0; } free(c); /* update interval (msec), default 1 sec */ cfg_number(section, "update", 1000, 10, -1, &(Bar->update)); /* get widget special colors */ Bar->color_valid[0] = widget_color(section, Self->name, "barcolor0", &Bar->color[0]); Bar->color_valid[1] = widget_color(section, Self->name, "barcolor1", &Bar->color[1]); free(section); Self->data = Bar; timer_add_widget(widget_bar_update, Self, Bar->update, 0); return 0; } int widget_bar_quit(WIDGET * Self) { if (Self) { if (Self->data) { WIDGET_BAR *Bar = Self->data; property_free(&Bar->expression1); property_free(&Bar->expression2); property_free(&Bar->expr_min); property_free(&Bar->expr_max); free(Self->data); } Self->data = NULL; } return 0; } WIDGET_CLASS Widget_Bar = { .name = "bar", .type = WIDGET_TYPE_RC, .init = widget_bar_init, .draw = NULL, .quit = widget_bar_quit, }; ef='#n91'>91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161