graph.c revision cae0872709f690086f896f7327e136c7db7ba567
1af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron/* 2af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * gfio - gui front end for fio - the flexible io tester 3af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * 4af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * Copyright (C) 2012 Stephen M. Cameron <stephenmcameron@gmail.com> 5af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * 6af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * The license below covers all files distributed with fio unless otherwise 7af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * noted in the file itself. 8af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * 9af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * This program is free software; you can redistribute it and/or modify 10af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * it under the terms of the GNU General Public License version 2 as 11af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * published by the Free Software Foundation. 12af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * 13af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * This program is distributed in the hope that it will be useful, 14af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * but WITHOUT ANY WARRANTY; without even the implied warranty of 15af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * GNU General Public License for more details. 17af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * 18af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * You should have received a copy of the GNU General Public License 19af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * along with this program; if not, write to the Free Software 20af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * 22af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron */ 23af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include <string.h> 24af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include <malloc.h> 25af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include <math.h> 26af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include <assert.h> 27af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 28af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include <cairo.h> 29af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include <gtk/gtk.h> 30af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 31af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron#include "tickmarks.h" 32af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 33af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstruct xyvalue { 34af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double x, y; 35af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron}; 36af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 37af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstruct graph_value { 38af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *next; 39af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron void *value; 40af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron}; 41af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 42af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstruct graph_label { 43af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron char *label; 44af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *tail; 45af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *values; 46af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *next; 47af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double r, g, b; 48af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int value_count; 49af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph *parent; 50af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron}; 51af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 52af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstruct graph { 53af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron char *title; 54af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron char *xtitle; 55af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron char *ytitle; 5687d5f276b14f42b09062d499ebb3f524e3aa86f3Jens Axboe unsigned int xdim, ydim; 57af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *labels; 58af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *tail; 59af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int per_label_limit; 60f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe const char *font; 61af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron}; 62af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 63f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboestruct graph *graph_new(unsigned int xdim, unsigned int ydim, const char *font) 64af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 65af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph *g; 66af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 67af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron g = calloc(1, sizeof(*g)); 68af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron g->xdim = xdim; 69af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron g->ydim = ydim; 70af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron g->per_label_limit = -1; 71f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe g->font = font; 72f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe if (!g->font) 73f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe g->font = "Sans"; 74af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return g; 75af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 76af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 77af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic int count_labels(struct graph_label *labels) 78af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 79af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int count = 0; 80af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 81af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 82af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = labels; i; i = i->next) 83af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron count++; 84af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return count; 85af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 86af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 87af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic int count_values(struct graph_value *values) 88af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 89af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int count = 0; 90af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *i; 91af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 92af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = values; i; i = i->next) 93af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron count++; 94af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return count; 95af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 96af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 97af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Camerontypedef double (*double_comparator)(double a, double b); 98af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 99af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double mindouble(double a, double b) 100af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 101af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return a < b ? a : b; 102af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 103af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 104af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double maxdouble(double a, double b) 105af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 106af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return a < b ? b : a; 107af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 108af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 109af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double find_double_values(struct graph_value *values, double_comparator cmp) 110af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 111af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *i; 112af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int first = 1; 113af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double answer, tmp; 114af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 115af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron assert(values != NULL); 116af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = 0.0; /* shut the compiler up, might need to think harder though. */ 117af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = values; i; i = i->next) { 118af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron tmp = *(double *) i->value; 119af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (first) { 120af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = tmp; 121af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron first = 0; 122af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } else { 123af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = cmp(answer, tmp); 124af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 125af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 126af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return answer; 127af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 128af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 129af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double find_double_data(struct graph_label *labels, double_comparator cmp) 130af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 131af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 132af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int first = 1; 133af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double answer, tmp; 134af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 135af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron assert(labels != NULL); 136af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = 0.0; /* shut the compiler up, might need to think harder though. */ 137af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = labels; i; i = i->next) { 138af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron tmp = find_double_values(i->values, cmp); 139af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (first) { 140af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = tmp; 141af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron first = 0; 142af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } else { 143af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = cmp(tmp, answer); 144af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 145af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 146af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return answer; 147af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 148af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 149af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double find_min_data(struct graph_label *labels) 150af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 151af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return find_double_data(labels, mindouble); 152af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 153af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 154af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double find_max_data(struct graph_label *labels) 155af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 156af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return find_double_data(labels, maxdouble); 157af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 158af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 159af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void draw_bars(struct graph *bg, cairo_t *cr, struct graph_label *lb, 160af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double label_offset, double bar_width, 161af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double mindata, double maxdata) 162af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 163af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *i; 164af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double x1, y1, x2, y2; 165af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int bar_num = 0; 166af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double domain, range, v; 167af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 168af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron domain = (maxdata - mindata); 169af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron range = (double) bg->ydim * 0.80; /* FIXME */ 170af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 171af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = lb->values; i; i = i->next) { 172af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 173af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x1 = label_offset + (double) bar_num * bar_width + (bar_width * 0.05); 174af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x2 = x1 + bar_width * 0.90; 175af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron y2 = bg->ydim * 0.90; 176af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron v = *(double *) i->value; 177af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron y1 = y2 - (((v - mindata) / domain) * range); 178af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, x1, y1); 179af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, x1, y2); 180af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, x2, y2); 181af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, x2, y1); 182af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_close_path(cr); 183af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_fill(cr); 184af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 185af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron bar_num++; 186af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 187af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 188af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 189f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboestatic void draw_centered_text(struct graph *g, cairo_t *cr, double x, double y, 190f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe double fontsize, const char *text) 191af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 192af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_text_extents_t extents; 193af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 194f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe cairo_select_font_face (cr, g->font, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL); 195af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 196af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_font_size(cr, fontsize); 197af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_text_extents(cr, text, &extents); 198af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x = x - (extents.width / 2 + extents.x_bearing); 199af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron y = y - (extents.height / 2 + extents.y_bearing); 200af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 201af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, x, y); 202af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_show_text(cr, text); 203af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 204af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 205f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboestatic void draw_vertical_centered_text(struct graph *g, cairo_t *cr, double x, 206f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe double y, double fontsize, 207f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe const char *text) 208af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 209af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double sx, sy; 210af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_text_extents_t extents; 211af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 212f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe cairo_select_font_face(cr, g->font, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL); 213af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 214af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_font_size(cr, fontsize); 215af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_text_extents(cr, text, &extents); 216af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron sx = x; 217af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron sy = y; 218af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron y = y + (extents.width / 2.0 + extents.x_bearing); 219af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x = x - (extents.height / 2.0 + extents.y_bearing); 220af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 221af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, x, y); 222af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_save(cr); 223af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_translate(cr, -sx, -sy); 224af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_rotate(cr, -90.0 * M_PI / 180.0); 225af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_translate(cr, sx, sy); 226af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_show_text(cr, text); 227af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_restore(cr); 228af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 229af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 230af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void graph_draw_common(struct graph *g, cairo_t *cr, 231af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double *x1, double *y1, double *x2, double *y2) 232af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 233af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_source_rgb(cr, 0, 0, 0); 234f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe cairo_set_line_width (cr, 0.8); 235af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 236af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, 0, 0); 237af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, 0, g->ydim); 238af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, g->xdim, g->ydim); 239af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, g->xdim, 0); 240af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, 0, 0); 241af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 242af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* for now just set margins at 10% of width. This is not very good. */ 243af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron *x1 = g->xdim / 10.0; 244f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe *x2 = 9.0 * *x1; 245af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron *y1 = g->ydim / 10.0; 246f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe *y2 = 9.0 * *y1; 247af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 248af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, *x1, *y1); 249af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, *x1, *y2); 250af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, *x2, *y2); 251af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, *x2, *y1); 252af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, *x1, *y1); 253af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 254af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 255f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(g, cr, g->xdim / 2, g->ydim / 20, 20.0, g->title); 256f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(g, cr, g->xdim / 2, g->ydim * 0.97, 14.0, g->xtitle); 257f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_vertical_centered_text(g, cr, g->xdim * 0.02, g->ydim / 2, 14.0, g->ytitle); 258af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 259af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 260af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 261af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void graph_draw_x_ticks(struct graph *g, cairo_t *cr, 262af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double x1, double y1, double x2, double y2, 263af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double minx, double maxx, int nticks) 264af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 265af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct tickmark *tm; 266af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double tx; 267af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int i; 268af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron static double dash[] = { 1.0, 2.0 }; 269af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 270af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron nticks = calc_tickmarks(minx, maxx, nticks, &tm); 271af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 272af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = 0; i < nticks; i++) { 273af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron tx = (((tm[i].value) - minx) / (maxx - minx)) * (x2 - x1) + x1; 274af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (tx < x1 || tx > x2) 275af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron continue; 276af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 277af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* Draw tick mark */ 278f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe cairo_set_line_width(cr, 0.8); 279af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, tx, y2); 280af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, tx, y2 + (y2 - y1) * 0.03); 281af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 282af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 283af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* draw grid lines */ 284af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_save(cr); 285af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_dash(cr, dash, 2, 2.0); 286af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_line_width(cr, 0.5); 287af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, tx, y1); 288af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, tx, y2); 289af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 290af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_restore(cr); 291af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 292af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* draw tickmark label */ 293f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(g, cr, tx, y2 * 1.04, 12.0, tm[i].string); 294af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 295af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 296af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 297af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 298af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 299af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void graph_draw_y_ticks(struct graph *g, cairo_t *cr, 300af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double x1, double y1, double x2, double y2, 301af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double miny, double maxy, int nticks) 302af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 303af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct tickmark *tm; 304af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double ty; 305af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int i; 306af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron static double dash[] = { 2.0, 2.0 }; 307af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 308af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron nticks = calc_tickmarks(miny, maxy, nticks, &tm); 309af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 310af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = 0; i < nticks; i++) { 311af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron ty = y2 - (((tm[i].value) - miny) / (maxy - miny)) * (y2 - y1); 312af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (ty < y1 || ty > y2) 313af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron continue; 314af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* draw tick mark */ 315af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, x1, ty); 316af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, x1 - (x2 - x1) * 0.02, ty); 317af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 318af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 319af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* draw grid lines */ 320af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_save(cr); 321af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_dash(cr, dash, 2, 2.0); 322af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_line_width(cr, 0.5); 323af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, x1, ty); 324af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, x2, ty); 325af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 326af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_restore(cr); 327af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 328af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron /* draw tickmark label */ 329f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(g, cr, x1 - (x2 - x1) * 0.04, ty, 12.0, tm[i].string); 330af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 331af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 332af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 333af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 334af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid bar_graph_draw(struct graph *bg, cairo_t *cr) 335af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 336af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double x1, y1, x2, y2; 337af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double space_per_label, bar_width; 338af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double label_offset, mindata, maxdata; 339af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int i, nlabels; 340af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *lb; 341af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 342af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_save(cr); 343af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_draw_common(bg, cr, &x1, &y1, &x2, &y2); 344af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 345af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron nlabels = count_labels(bg->labels); 346af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron space_per_label = (x2 - x1) / (double) nlabels; 347af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 348af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron mindata = find_min_data(bg->labels); 349af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron maxdata = find_max_data(bg->labels); 350af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 351af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (fabs(maxdata - mindata) < 1e-20) { 352f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(bg, cr, 353af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x1 + (x2 - x1) / 2.0, 354af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron y1 + (y2 - y1) / 2.0, 20.0, "No good data"); 355af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return; 356af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 357af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 358af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_draw_y_ticks(bg, cr, x1, y1, x2, y2, mindata, maxdata, 10); 359af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 360af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i = 0; 361af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (lb = bg->labels; lb; lb = lb->next) { 362af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int nvalues; 363af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron nvalues = count_values(lb->values); 364af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron bar_width = (space_per_label - space_per_label * 0.2) / (double) nvalues; 365af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron label_offset = bg->xdim * 0.1 + space_per_label * (double) i + space_per_label * 0.1; 366af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron draw_bars(bg, cr, lb, label_offset, bar_width, mindata, maxdata); 367af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron // draw_centered_text(cr, label_offset + (bar_width / 2.0 + bar_width * 0.1), bg->ydim * 0.93, 368f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(bg, cr, x1 + space_per_label * (i + 0.5), bg->ydim * 0.93, 369af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 12.0, lb->label); 370af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i++; 371af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 372af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 373af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_restore(cr); 374af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 375af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 376af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Camerontypedef double (*xy_value_extractor)(struct graph_value *v); 377af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 378af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double getx(struct graph_value *v) 379af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 380af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct xyvalue *xy = v->value; 381af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return xy->x; 382af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 383af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 384af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double gety(struct graph_value *v) 385af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 386af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct xyvalue *xy = v->value; 387af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return xy->y; 388af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 389af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 390af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic double find_xy_value(struct graph *g, xy_value_extractor getvalue, double_comparator cmp) 391af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 392af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double tmp, answer = 0.0; 393af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 394af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *j; 395af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 396af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = g->labels; i; i = i->next) 397af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (j = i->values; j; j = j->next) { 398af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron tmp = getvalue(j); 399af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron answer = cmp(tmp, answer); 400af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 401af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return answer; 402af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 403af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 404af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid line_graph_draw(struct graph *g, cairo_t *cr) 405af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 406af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double x1, y1, x2, y2; 407af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double minx, miny, maxx, maxy; 408af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double tx, ty; 409af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 410af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *j; 411af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron int first = 1; 412af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 413af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_save(cr); 414af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_draw_common(g, cr, &x1, &y1, &x2, &y2); 415af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 416af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron minx = find_xy_value(g, getx, mindouble); 417af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron maxx = find_xy_value(g, getx, maxdouble); 418af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron miny = find_xy_value(g, gety, mindouble); 419af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron maxy = find_xy_value(g, gety, maxdouble); 420af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 421af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (fabs(maxx - minx) < 1e-20 || fabs(maxy - miny) < 1e-20) { 422f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe draw_centered_text(g, cr, 423af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x1 + (x2 - x1) / 2.0, 424af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron y1 + (y2 - y1) / 2.0, 20.0, "No good Data"); 425af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return; 426af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 427af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 428af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_draw_x_ticks(g, cr, x1, y1, x2, y2, minx, maxx, 10); 429af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_draw_y_ticks(g, cr, x1, y1, x2, y2, miny, maxy, 10); 430af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 431f3e8440f75f98ced28cdd19ba785718e734cf7c5Jens Axboe cairo_set_line_width(cr, 1.5); 432af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = g->labels; i; i = i->next) { 433af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron first = 1; 434cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron if (i->r < 0) /* invisible data */ 435cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron continue; 436af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_set_source_rgb(cr, i->r, i->g, i->b); 437af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (j = i->values; j; j = j->next) { 438af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron tx = ((getx(j) - minx) / (maxx - minx)) * (x2 - x1) + x1; 439af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron ty = y2 - ((gety(j) - miny) / (maxy - miny)) * (y2 - y1); 440af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (first) { 441af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_move_to(cr, tx, ty); 442af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron first = 0; 443af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } else { 444af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_line_to(cr, tx, ty); 445af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 446af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 447af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_stroke(cr); 448af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 449af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron cairo_restore(cr); 450af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 451af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 452af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void gfree(void *f) 453af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 454af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (f) 455af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron free(f); 456af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 457af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 458af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void setstring(char **str, const char *value) 459af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 460af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(*str); 461af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron *str = strdup(value); 462af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 463af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 464af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid graph_title(struct graph *bg, const char *title) 465af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 466af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron setstring(&bg->title, title); 467af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 468af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 469af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid graph_x_title(struct graph *bg, const char *title) 470af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 471af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron setstring(&bg->xtitle, title); 472af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 473af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 474af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid graph_y_title(struct graph *bg, const char *title) 475af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 476af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron setstring(&bg->ytitle, title); 477af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 478af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 479af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic struct graph_label *graph_find_label(struct graph *bg, 480af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron const char *label) 481af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 482af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 483af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 484af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = bg->labels; i; i = i->next) 485af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (strcmp(label, i->label) == 0) 486af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return i; 487af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return NULL; 488af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 489af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 490af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid graph_add_label(struct graph *bg, const char *label) 491af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 492af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 493af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 494af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i = graph_find_label(bg, label); 495af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (i) 496af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return; /* already present. */ 497af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i = calloc(1, sizeof(*i)); 498af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->parent = bg; 499af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron setstring(&i->label, label); 500af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->next = NULL; 501af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (!bg->tail) 502af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron bg->labels = i; 503af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron else 504af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron bg->tail->next = i; 505af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron bg->tail = i; 506af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 507af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 508af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void graph_label_add_value(struct graph_label *i, void *value) 509af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 510af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *x; 511af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 512af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x = malloc(sizeof(*x)); 513af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x->value = value; 514af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x->next = NULL; 515af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (!i->tail) { 516af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->values = x; 517af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } else { 518af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->tail->next = x; 519af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 520af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->tail = x; 521af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->value_count++; 522af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 523af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (i->parent->per_label_limit != -1 && 524af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->value_count > i->parent->per_label_limit) { 525af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron x = i->values; 526af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->values = i->values->next; 527af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron free(x->value); 528af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron free(x); 529af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->value_count--; 530af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 531af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 532af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 533af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronint graph_add_data(struct graph *bg, const char *label, const double value) 534af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 535af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 536af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double *d; 537af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 538af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron d = malloc(sizeof(*d)); 539af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron *d = value; 540af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 541af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i = graph_find_label(bg, label); 542af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (!i) 543af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return -1; 544af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_label_add_value(i, d); 545af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return 0; 546af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 547af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 548af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronint graph_add_xy_data(struct graph *bg, const char *label, 549af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron const double x, const double y) 550af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 551af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 552af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct xyvalue *xy; 553af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 554af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron xy = malloc(sizeof(*xy)); 555af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron xy->x = x; 556af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron xy->y = y; 557af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 558af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i = graph_find_label(bg, label); 559af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (!i) 560af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return -1; 561af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_label_add_value(i, xy); 562af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron return 0; 563af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 564af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 565af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void graph_free_values(struct graph_value *values) 566af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 567af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_value *i, *next; 568af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 569af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = values; i; i = next) { 570af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron next = i->next; 571af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(i->value); 572af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(i); 573af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 574af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 575af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 576af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronstatic void graph_free_labels(struct graph_label *labels) 577af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 578af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i, *next; 579af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 580af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = labels; i; i = next) { 581af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron next = i->next; 582af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_free_values(i->values); 583af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(i); 584af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 585af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 586af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 587af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid graph_set_color(struct graph *gr, const char *label, 588af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double red, double green, double blue) 589af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 590af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron struct graph_label *i; 591af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron double r, g, b; 592af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 593cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron if (red < 0.0) { /* invisible color */ 594cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron r = -1.0; 595cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron g = -1.0; 596cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron b = -1.0; 597cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron } else { 598cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron r = fabs(red); 599cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron g = fabs(green); 600cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron b = fabs(blue); 601cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron 602cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron if (r > 1.0) 603cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron r = 1.0; 604cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron if (g > 1.0) 605cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron g = 1.0; 606cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron if (b > 1.0) 607cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron b =1.0; 608cae0872709f690086f896f7327e136c7db7ba567Stephen M. Cameron } 609af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 610af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron for (i = gr->labels; i; i = i->next) 611af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron if (strcmp(i->label, label) == 0) { 612af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->r = r; 613af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->g = g; 614af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron i->b = b; 615af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron break; 616af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron } 617af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 618af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 619af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid graph_free(struct graph *bg) 620af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 621af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(bg->title); 622af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(bg->xtitle); 623af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron gfree(bg->ytitle); 624af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron graph_free_labels(bg->labels); 625af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 626af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 627af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron/* For each line in the line graph, up to per_label_limit segments may 628af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * be added. After that, adding more data to the end of the line 629af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron * causes data to drop off of the front of the line. 630af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron */ 631af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameronvoid line_graph_set_data_count_limit(struct graph *g, int per_label_limit) 632af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron{ 633af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron g->per_label_limit = per_label_limit; 634af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron} 635af58ef32b7398d791168af54aa4aab0b23192f90Stephen M. Cameron 636