usr.bin/evtranalyze/svg.c

   1 /*
   2  * Copyright (c) 2009, 2010 Aggelos Economopoulos.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in
  12  *    the documentation and/or other materials provided with the
  13  *    distribution.
  14  * 3. Neither the name of The DragonFly Project nor the names of its
  15  *    contributors may be used to endorse or promote products derived
  16  *    from this software without specific, prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  22  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  27  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  28  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <assert.h>
  33 #include <math.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36
  37 #include "xml.h"
  38 #include "svg.h"
  39
  40 enum {
  41         MAX_VALSTR_LEN = 30,
  42 };
  43
  44 struct svg_rect {
  45         struct xml_element el;
  46         struct xml_attribute x, y, w, h, cl;
  47         char x_val[MAX_VALSTR_LEN];
  48         char y_val[MAX_VALSTR_LEN];
  49         char w_val[MAX_VALSTR_LEN];
  50         char h_val[MAX_VALSTR_LEN];
  51 };
  52
  53 struct svg_text {
  54         struct xml_element el;
  55         struct xml_attribute x, y, cl;
  56         struct xml_attribute fontsize, transform;
  57         char x_val[MAX_VALSTR_LEN];
  58         char y_val[MAX_VALSTR_LEN];
  59         char fontsize_val[MAX_VALSTR_LEN];
  60         char transform_val[MAX_VALSTR_LEN * 4];
  61 };
  62
  63 struct svg_line {
  64         struct xml_element el;
  65         struct xml_attribute x1, y1, x2, y2, cl;
  66         struct xml_attribute transform;
  67         char x1_val[MAX_VALSTR_LEN], y1_val[MAX_VALSTR_LEN];
  68         char x2_val[MAX_VALSTR_LEN], y2_val[MAX_VALSTR_LEN];
  69         char transform_val[MAX_VALSTR_LEN * 6];
  70 };
  71
  72 struct svg_document {
  73         xml_document_t xml;
  74         const char *css;
  75         struct xml_element svg;
  76         struct xml_attribute svg_attrs[2];
  77         struct svg_text text;
  78 };
  79
  80 static char default_css[] =
  81         "<![CDATA["
  82         "rect.generic { fill: green; stroke: black; stroke-width: 0.01;}"
  83         "rect.thread { fill: yellow; stroke: black; stroke-width: 0.01;}"
  84         "rect.inactive { fill: grey; stroke: black; stroke-width: 0.01;}"
  85         "text.generic { fill: black; stroke: none;}]]>";
  86
  87 static
  88 int
  89 svg_transform_print(svg_transform_t tf, char *buf, size_t len)
  90 {
  91         static double eps = 0.0001;
  92         char *p;
  93         int c;
  94
  95         if (!tf) {
  96                 assert(len >= 1);
  97                 buf[0] = '\0';
  98                 return 0;
  99         }
 100         p = buf;
 101         if ((fabs(tf->tx) > eps) && (fabs(tf->ty) > eps)) {
 102                 c = snprintf(buf, len, "translate(%.20lf,%.20lf)", tf->tx,
 103                              tf->ty);
 104                 len -= c;
 105                 if (len <= 0)
 106                         return !0;
 107                 p += c;
 108         }
 109         if ((fabs(tf->sx - 1) > eps) && (fabs(tf->sy - 1) > eps)) {
 110                 c = snprintf(p, len, "%sscale(%.20lf,%.20lf)",
 111                              (p == buf) ? "" : " ", tf->sx, tf->sy);
 112                 len -= c;
 113                 if (len <= 0)
 114                         return !0;
 115                 p += c;
 116         }
 117         if (fabs(tf->rot) > eps) {
 118                 c = snprintf(p, len, "%srotate(%.2lf)",
 119                              (p == buf) ? "" : " ", tf->rot);
 120                 len -= c;
 121                 if (len <= 0)
 122                         return !0;
 123                 p += c;
 124         }
 125         return 0;
 126 }
 127
 128 static
 129 void
 130 svg_rect_init(struct svg_rect *rect, const char *cl)
 131 {
 132         xml_elem_init(&rect->el, "rect");
 133         xml_attribute_init(&rect->x, "x", NULL);
 134         xml_elem_set_attribute(&rect->el, &rect->x);
 135         xml_attribute_init(&rect->y, "y", NULL);
 136         xml_elem_set_attribute(&rect->el, &rect->y);
 137         xml_attribute_init(&rect->w, "width", NULL);
 138         xml_elem_set_attribute(&rect->el, &rect->w);
 139         xml_attribute_init(&rect->h, "height", NULL);
 140         xml_elem_set_attribute(&rect->el, &rect->h);
 141         if (cl) {
 142                 xml_attribute_init(&rect->cl, "class", cl);
 143                 xml_elem_set_attribute(&rect->el, &rect->cl);
 144         }
 145 }
 146
 147 /*
 148  * In the future, we might want to stick the rectangle in the
 149  * <defs> element at this point and then <use> it in the rest
 150  * of the document.
 151  */
 152 struct svg_rect *
 153 svg_rect_new(const char *cl)
 154 {
 155         struct svg_rect *r;
 156
 157         if (!(r = malloc(sizeof(*r))))
 158                 return r;
 159         svg_rect_init(r, cl);
 160         return r;
 161 }
 162
 163
 164 int
 165 svg_rect_draw(svg_document_t doc, struct svg_rect *rect, double x,
 166               double y, double w, double h)
 167 {
 168         snprintf(&rect->x_val[0], sizeof(rect->x_val), "%.20lf", x);
 169         xml_attribute_set_value(&rect->x, &rect->x_val[0]);
 170         snprintf(&rect->y_val[0], sizeof(rect->y_val), "%lf", y);
 171         xml_attribute_set_value(&rect->y, &rect->y_val[0]);
 172         snprintf(&rect->w_val[0], sizeof(rect->w_val), "%.20lf", w);
 173         xml_attribute_set_value(&rect->w, &rect->w_val[0]);
 174         snprintf(&rect->h_val[0], sizeof(rect->h_val), "%lf", h);
 175         xml_attribute_set_value(&rect->h, &rect->h_val[0]);
 176
 177         xml_elem_closed(doc->xml, &rect->el);
 178         return 0;
 179 }
 180
 181 static
 182 void
 183 svg_text_init(struct svg_text *text, const char *cl)
 184 {
 185         xml_elem_init(&text->el, "text");
 186 #if remove
 187         xml_attribute_init(&text->x, "x", NULL);
 188         xml_elem_set_attribute(&text->el, &text->x);
 189         xml_attribute_init(&text->y, "y", NULL);
 190         xml_elem_set_attribute(&text->el, &text->y);
 191 #endif
 192         xml_attribute_init(&text->fontsize, "font-size", NULL);
 193         xml_elem_set_attribute(&text->el, &text->fontsize);
 194         xml_attribute_init(&text->transform, "transform", NULL);
 195         xml_elem_set_attribute(&text->el, &text->transform);
 196
 197         if (cl) {
 198                 xml_attribute_init(&text->cl, "class", cl);
 199                 xml_elem_set_attribute(&text->el, &text->cl);
 200         }
 201
 202 }
 203
 204 struct svg_text *
 205 svg_text_new(const char *cl)
 206 {
 207         svg_text_t text;
 208
 209         if (!(text = malloc(sizeof(*text))))
 210                 return text;
 211         svg_text_init(text, cl);
 212         return text;
 213 }
 214
 215 int
 216 svg_text_draw(svg_document_t doc, svg_text_t text, svg_transform_t tf,
 217               const char *str, double fontsize)
 218 {
 219 #if remove
 220         snprintf(&text->x_val[0], sizeof(text->x_val), "%.20lf", x);
 221         xml_attribute_set_value(&text->x, &text->x_val[0]);
 222         snprintf(&text->y_val[0], sizeof(text->y_val), "%.20lf", y);
 223         xml_attribute_set_value(&text->y, &text->y_val[0]);
 224 #endif
 225         snprintf(&text->fontsize_val[0], sizeof(text->fontsize_val), "%.20lf",
 226                  fontsize);
 227         xml_attribute_set_value(&text->fontsize, &text->fontsize_val[0]);
 228         if (svg_transform_print(tf, &text->transform_val[0],
 229                                 sizeof(text->transform_val)))
 230                 return !0;
 231         xml_attribute_set_value(&text->transform, &text->transform_val[0]);
 232         xml_elem_set_value(&text->el, str);
 233
 234         xml_elem_closed(doc->xml, &text->el);
 235         return 0;
 236 }
 237
 238 static
 239 void
 240 svg_line_init(struct svg_line *line, const char *cl)
 241 {
 242         xml_elem_init(&line->el, "line");
 243         xml_attribute_init(&line->x1, "x1", NULL);
 244         xml_elem_set_attribute(&line->el, &line->x1);
 245         xml_attribute_init(&line->x2, "x2", NULL);
 246         xml_elem_set_attribute(&line->el, &line->x2);
 247         xml_attribute_init(&line->y1, "y1", NULL);
 248         xml_elem_set_attribute(&line->el, &line->y1);
 249         xml_attribute_init(&line->y2, "y2", NULL);
 250         xml_elem_set_attribute(&line->el, &line->y2);
 251
 252         xml_attribute_init(&line->transform, "transform", NULL);
 253         xml_elem_set_attribute(&line->el, &line->transform);
 254
 255         if (cl) {
 256                 xml_attribute_init(&line->cl, "class", cl);
 257                 xml_elem_set_attribute(&line->el, &line->cl);
 258         }
 259
 260 }
 261
 262 struct svg_line *
 263 svg_line_new(const char *cl)
 264 {
 265         svg_line_t line;
 266
 267         if (!(line = malloc(sizeof(*line))))
 268                 return line;
 269         svg_line_init(line, cl);
 270         return line;
 271 }
 272
 273 int
 274 svg_line_draw(svg_document_t doc, svg_line_t line, double x1, double _y1,
 275               double x2, double y2, svg_transform_t tf)
 276 {
 277         snprintf(&line->x1_val[0], sizeof(line->x1_val), "%.20lf", x1);
 278         xml_attribute_set_value(&line->x1, &line->x1_val[0]);
 279
 280         snprintf(&line->x2_val[0], sizeof(line->x2_val), "%.20lf", x2);
 281         xml_attribute_set_value(&line->x2, &line->x2_val[0]);
 282
 283         snprintf(&line->y1_val[0], sizeof(line->y1_val), "%.10lf", _y1);
 284         xml_attribute_set_value(&line->y1, &line->y1_val[0]);
 285
 286         snprintf(&line->y2_val[0], sizeof(line->y2_val), "%.20lf", y2);
 287         xml_attribute_set_value(&line->y2, &line->y2_val[0]);
 288
 289         xml_attribute_set_value(&line->transform, &line->transform_val[0]);
 290         if (svg_transform_print(tf,
 291                                 &line->transform_val[0],
 292                                 sizeof(line->transform_val)))
 293                 return !0;
 294         xml_elem_closed(doc->xml, &line->el);
 295         return 0;
 296 }
 297
 298 svg_document_t
 299 svg_document_create(const char *path)
 300 {
 301         svg_document_t svg;
 302         struct xml_element style, defs;
 303         struct xml_attribute type;
 304
 305         if (!(svg = malloc(sizeof(*svg))))
 306                 return NULL;
 307         if (!(svg->xml = xml_document_create(path))) {
 308                 free(svg);
 309                 return NULL;
 310         }
 311         svg->css = &default_css[0];
 312         xml_attribute_init(&type, "type", "text/css");
 313         xml_elem_init(&defs, "defs");
 314         xml_elem_init(&style, "style");
 315         xml_elem_set_attribute(&style, &type);
 316         xml_elem_init(&svg->svg, "svg");
 317         xml_attribute_init(&svg->svg_attrs[0], "version", "1.1");
 318         xml_elem_set_attribute(&svg->svg, &svg->svg_attrs[0]);
 319         xml_attribute_init(&svg->svg_attrs[1], "xmlns",
 320                            "http://www.w3.org/2000/svg");
 321         xml_elem_set_attribute(&svg->svg, &svg->svg_attrs[1]);
 322         xml_elem_begin(svg->xml, &svg->svg);
 323         xml_elem_begin(svg->xml, &defs);
 324         xml_elem_set_value(&style, svg->css);
 325         xml_elem_closed(svg->xml, &style);
 326         xml_elem_close(svg->xml, &defs);
 327
 328         return svg;
 329 }
 330
 331 int
 332 svg_document_close(svg_document_t svg)
 333 {
 334         xml_elem_close(svg->xml, &svg->svg);
 335         xml_document_close(svg->xml);
 336         return 0;
 337 }