/* $Id$ * $URL$ * * bar 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. * */ /* * exported functions: * * WIDGET_CLASS Widget_Bar * the bar widget * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <ctype.h> #include "debug.h" #include "cfg.h" #include "property.h" #include "timer.h" #include "widget.h" #include "widget_bar.h" #ifdef WITH_DMALLOC #include <dmalloc.h> #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; } /* 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; break; case 'W': Bar->direction = DIR_WEST; break; case 'N': Bar->direction = DIR_NORTH; break; case 'S': Bar->direction = DIR_SOUTH; break; default: error("widget %s has unknown direction '%s', using 'East'", 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; if (!(Bar->direction & (DIR_EAST | DIR_WEST))) { error("widget %s with style \"hollow\" not implemented", Self->name); Bar->style = 0; } break; default: 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_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, }; ref='#n45'>45</a> <a id='n46' href='#n46'>46</a> <a id='n47' href='#n47'>47</a> <a id='n48' href='#n48'>48</a> <a id='n49' href='#n49'>49</a> <a id='n50' href='#n50'>50</a> <a id='n51' href='#n51'>51</a> <a id='n52' href='#n52'>52</a> <a id='n53' href='#n53'>53</a> <a id='n54' href='#n54'>54</a> <a id='n55' href='#n55'>55</a> <a id='n56' href='#n56'>56</a> <a id='n57' href='#n57'>57</a> <a id='n58' href='#n58'>58</a> <a id='n59' href='#n59'>59</a> <a id='n60' href='#n60'>60</a> <a id='n61' href='#n61'>61</a> <a id='n62' href='#n62'>62</a> <a id='n63' href='#n63'>63</a> <a id='n64' href='#n64'>64</a> <a id='n65' href='#n65'>65</a> <a id='n66' href='#n66'>66</a> <a id='n67' href='#n67'>67</a> <a id='n68' href='#n68'>68</a> <a id='n69' href='#n69'>69</a> <a id='n70' href='#n70'>70</a> <a id='n71' href='#n71'>71</a> <a id='n72' href='#n72'>72</a> <a id='n73' href='#n73'>73</a> <a id='n74' href='#n74'>74</a> <a id='n75' href='#n75'>75</a> <a id='n76' href='#n76'>76</a> <a id='n77' href='#n77'>77</a> <a id='n78' href='#n78'>78</a> <a id='n79' href='#n79'>79</a> <a id='n80' href='#n80'>80</a> <a id='n81' href='#n81'>81</a> <a id='n82' href='#n82'>82</a> <a id='n83' href='#n83'>83</a> <a id='n84' href='#n84'>84</a> <a id='n85' href='#n85'>85</a> <a id='n86' href='#n86'>86</a> <a id='n87' href='#n87'>87</a> <a id='n88' href='#n88'>88</a> <a id='n89' href='#n89'>89</a> <a id='n90' href='#n90'>90</a> <a id='n91' href='#n91'>91</a> <a id='n92' href='#n92'>92</a> <a id='n93' href='#n93'>93</a> <a id='n94' href='#n94'>94</a> <a id='n95' href='#n95'>95</a> <a id='n96' href='#n96'>96</a> <a id='n97' href='#n97'>97</a> <a id='n98' href='#n98'>98</a> <a id='n99' href='#n99'>99</a> <a id='n100' href='#n100'>100</a> <a id='n101' href='#n101'>101</a> <a id='n102' href='#n102'>102</a> <a id='n103' href='#n103'>103</a> <a id='n104' href='#n104'>104</a> <a id='n105' href='#n105'>105</a> <a id='n106' href='#n106'>106</a> <a id='n107' href='#n107'>107</a> <a id='n108' href='#n108'>108</a> <a id='n109' href='#n109'>109</a> <a id='n110' href='#n110'>110</a> <a id='n111' href='#n111'>111</a> <a id='n112' href='#n112'>112</a> <a id='n113' href='#n113'>113</a> <a id='n114' href='#n114'>114</a> <a id='n115' href='#n115'>115</a> <a id='n116' href='#n116'>116</a> <a id='n117' href='#n117'>117</a> <a id='n118' href='#n118'>118</a> <a id='n119' href='#n119'>119</a> </pre></td> <td class='lines'><pre><code>