/usr/share/doc/libgegl-dev/journal.html is in libgegl-doc 0.3.30-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
<meta name="generator" content="AsciiDoc 8.6.10" />
<title></title>
<style type="text/css">
/* Shared CSS for AsciiDoc xhtml11 and html5 backends */
/* Default font. */
body {
font-family: Georgia,serif;
}
/* Title font. */
h1, h2, h3, h4, h5, h6,
div.title, caption.title,
thead, p.table.header,
#toctitle,
#author, #revnumber, #revdate, #revremark,
#footer {
font-family: Arial,Helvetica,sans-serif;
}
body {
margin: 1em 5% 1em 5%;
}
a {
color: blue;
text-decoration: underline;
}
a:visited {
color: fuchsia;
}
em {
font-style: italic;
color: navy;
}
strong {
font-weight: bold;
color: #083194;
}
h1, h2, h3, h4, h5, h6 {
color: #527bbd;
margin-top: 1.2em;
margin-bottom: 0.5em;
line-height: 1.3;
}
h1, h2, h3 {
border-bottom: 2px solid silver;
}
h2 {
padding-top: 0.5em;
}
h3 {
float: left;
}
h3 + * {
clear: left;
}
h5 {
font-size: 1.0em;
}
div.sectionbody {
margin-left: 0;
}
hr {
border: 1px solid silver;
}
p {
margin-top: 0.5em;
margin-bottom: 0.5em;
}
ul, ol, li > p {
margin-top: 0;
}
ul > li { color: #aaa; }
ul > li > * { color: black; }
.monospaced, code, pre {
font-family: "Courier New", Courier, monospace;
font-size: inherit;
color: navy;
padding: 0;
margin: 0;
}
pre {
white-space: pre-wrap;
}
#author {
color: #527bbd;
font-weight: bold;
font-size: 1.1em;
}
#email {
}
#revnumber, #revdate, #revremark {
}
#footer {
font-size: small;
border-top: 2px solid silver;
padding-top: 0.5em;
margin-top: 4.0em;
}
#footer-text {
float: left;
padding-bottom: 0.5em;
}
#footer-badges {
float: right;
padding-bottom: 0.5em;
}
#preamble {
margin-top: 1.5em;
margin-bottom: 1.5em;
}
div.imageblock, div.exampleblock, div.verseblock,
div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
div.admonitionblock {
margin-top: 1.0em;
margin-bottom: 1.5em;
}
div.admonitionblock {
margin-top: 2.0em;
margin-bottom: 2.0em;
margin-right: 10%;
color: #606060;
}
div.content { /* Block element content. */
padding: 0;
}
/* Block element titles. */
div.title, caption.title {
color: #527bbd;
font-weight: bold;
text-align: left;
margin-top: 1.0em;
margin-bottom: 0.5em;
}
div.title + * {
margin-top: 0;
}
td div.title:first-child {
margin-top: 0.0em;
}
div.content div.title:first-child {
margin-top: 0.0em;
}
div.content + div.title {
margin-top: 0.0em;
}
div.sidebarblock > div.content {
background: #ffffee;
border: 1px solid #dddddd;
border-left: 4px solid #f0f0f0;
padding: 0.5em;
}
div.listingblock > div.content {
border: 1px solid #dddddd;
border-left: 5px solid #f0f0f0;
background: #f8f8f8;
padding: 0.5em;
}
div.quoteblock, div.verseblock {
padding-left: 1.0em;
margin-left: 1.0em;
margin-right: 10%;
border-left: 5px solid #f0f0f0;
color: #888;
}
div.quoteblock > div.attribution {
padding-top: 0.5em;
text-align: right;
}
div.verseblock > pre.content {
font-family: inherit;
font-size: inherit;
}
div.verseblock > div.attribution {
padding-top: 0.75em;
text-align: left;
}
/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
div.verseblock + div.attribution {
text-align: left;
}
div.admonitionblock .icon {
vertical-align: top;
font-size: 1.1em;
font-weight: bold;
text-decoration: underline;
color: #527bbd;
padding-right: 0.5em;
}
div.admonitionblock td.content {
padding-left: 0.5em;
border-left: 3px solid #dddddd;
}
div.exampleblock > div.content {
border-left: 3px solid #dddddd;
padding-left: 0.5em;
}
div.imageblock div.content { padding-left: 0; }
span.image img { border-style: none; vertical-align: text-bottom; }
a.image:visited { color: white; }
dl {
margin-top: 0.8em;
margin-bottom: 0.8em;
}
dt {
margin-top: 0.5em;
margin-bottom: 0;
font-style: normal;
color: navy;
}
dd > *:first-child {
margin-top: 0.1em;
}
ul, ol {
list-style-position: outside;
}
ol.arabic {
list-style-type: decimal;
}
ol.loweralpha {
list-style-type: lower-alpha;
}
ol.upperalpha {
list-style-type: upper-alpha;
}
ol.lowerroman {
list-style-type: lower-roman;
}
ol.upperroman {
list-style-type: upper-roman;
}
div.compact ul, div.compact ol,
div.compact p, div.compact p,
div.compact div, div.compact div {
margin-top: 0.1em;
margin-bottom: 0.1em;
}
tfoot {
font-weight: bold;
}
td > div.verse {
white-space: pre;
}
div.hdlist {
margin-top: 0.8em;
margin-bottom: 0.8em;
}
div.hdlist tr {
padding-bottom: 15px;
}
dt.hdlist1.strong, td.hdlist1.strong {
font-weight: bold;
}
td.hdlist1 {
vertical-align: top;
font-style: normal;
padding-right: 0.8em;
color: navy;
}
td.hdlist2 {
vertical-align: top;
}
div.hdlist.compact tr {
margin: 0;
padding-bottom: 0;
}
.comment {
background: yellow;
}
.footnote, .footnoteref {
font-size: 0.8em;
}
span.footnote, span.footnoteref {
vertical-align: super;
}
#footnotes {
margin: 20px 0 20px 0;
padding: 7px 0 0 0;
}
#footnotes div.footnote {
margin: 0 0 5px 0;
}
#footnotes hr {
border: none;
border-top: 1px solid silver;
height: 1px;
text-align: left;
margin-left: 0;
width: 20%;
min-width: 100px;
}
div.colist td {
padding-right: 0.5em;
padding-bottom: 0.3em;
vertical-align: top;
}
div.colist td img {
margin-top: 0.3em;
}
@media print {
#footer-badges { display: none; }
}
#toc {
margin-bottom: 2.5em;
}
#toctitle {
color: #527bbd;
font-size: 1.1em;
font-weight: bold;
margin-top: 1.0em;
margin-bottom: 0.1em;
}
div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
margin-top: 0;
margin-bottom: 0;
}
div.toclevel2 {
margin-left: 2em;
font-size: 0.9em;
}
div.toclevel3 {
margin-left: 4em;
font-size: 0.9em;
}
div.toclevel4 {
margin-left: 6em;
font-size: 0.9em;
}
span.aqua { color: aqua; }
span.black { color: black; }
span.blue { color: blue; }
span.fuchsia { color: fuchsia; }
span.gray { color: gray; }
span.green { color: green; }
span.lime { color: lime; }
span.maroon { color: maroon; }
span.navy { color: navy; }
span.olive { color: olive; }
span.purple { color: purple; }
span.red { color: red; }
span.silver { color: silver; }
span.teal { color: teal; }
span.white { color: white; }
span.yellow { color: yellow; }
span.aqua-background { background: aqua; }
span.black-background { background: black; }
span.blue-background { background: blue; }
span.fuchsia-background { background: fuchsia; }
span.gray-background { background: gray; }
span.green-background { background: green; }
span.lime-background { background: lime; }
span.maroon-background { background: maroon; }
span.navy-background { background: navy; }
span.olive-background { background: olive; }
span.purple-background { background: purple; }
span.red-background { background: red; }
span.silver-background { background: silver; }
span.teal-background { background: teal; }
span.white-background { background: white; }
span.yellow-background { background: yellow; }
span.big { font-size: 2em; }
span.small { font-size: 0.6em; }
span.underline { text-decoration: underline; }
span.overline { text-decoration: overline; }
span.line-through { text-decoration: line-through; }
div.unbreakable { page-break-inside: avoid; }
/*
* xhtml11 specific
*
* */
div.tableblock {
margin-top: 1.0em;
margin-bottom: 1.5em;
}
div.tableblock > table {
border: 3px solid #527bbd;
}
thead, p.table.header {
font-weight: bold;
color: #527bbd;
}
p.table {
margin-top: 0;
}
/* Because the table frame attribute is overriden by CSS in most browsers. */
div.tableblock > table[frame="void"] {
border-style: none;
}
div.tableblock > table[frame="hsides"] {
border-left-style: none;
border-right-style: none;
}
div.tableblock > table[frame="vsides"] {
border-top-style: none;
border-bottom-style: none;
}
/*
* html5 specific
*
* */
table.tableblock {
margin-top: 1.0em;
margin-bottom: 1.5em;
}
thead, p.tableblock.header {
font-weight: bold;
color: #527bbd;
}
p.tableblock {
margin-top: 0;
}
table.tableblock {
border-width: 3px;
border-spacing: 0px;
border-style: solid;
border-color: #527bbd;
border-collapse: collapse;
}
th.tableblock, td.tableblock {
border-width: 1px;
padding: 4px;
border-style: solid;
border-color: #527bbd;
}
table.tableblock.frame-topbot {
border-left-style: hidden;
border-right-style: hidden;
}
table.tableblock.frame-sides {
border-top-style: hidden;
border-bottom-style: hidden;
}
table.tableblock.frame-none {
border-style: hidden;
}
th.tableblock.halign-left, td.tableblock.halign-left {
text-align: left;
}
th.tableblock.halign-center, td.tableblock.halign-center {
text-align: center;
}
th.tableblock.halign-right, td.tableblock.halign-right {
text-align: right;
}
th.tableblock.valign-top, td.tableblock.valign-top {
vertical-align: top;
}
th.tableblock.valign-middle, td.tableblock.valign-middle {
vertical-align: middle;
}
th.tableblock.valign-bottom, td.tableblock.valign-bottom {
vertical-align: bottom;
}
/*
* manpage specific
*
* */
body.manpage h1 {
padding-top: 0.5em;
padding-bottom: 0.5em;
border-top: 2px solid silver;
border-bottom: 2px solid silver;
}
body.manpage h2 {
border-style: none;
}
body.manpage div.sectionbody {
margin-left: 3em;
}
@media print {
body.manpage div#toc { display: none; }
}
li>p {
display: inline;
}
body {
padding: 0;
background-color: #fff;
color: black;
}
div.paper {
background-color: #fff;
color: black;
margin: 1em;
/*margin-left: 12.5em;*/
}
iframe {
background-color: #aaa;
}
img {max-width: 100%}
div.content {
margin-left: auto;
margin-right: auto;
padding: 1em;
padding-right: 3em;
padding-left: 2em;
max-width: 45em;
}
p {
line-height: 1.2em;
}
h1 {
margin-top: 0em;
}
h1, h2, h3, h4{
color: #112266;
}
h1 {
font-size: 2em;
}
h2 {
font-size: 1.5em;
}
h3 {
font-size: 1.2em;
}
h4 {
font-size: 1.0em;
}
dl {
margin-top: 1em;
margin-bottom: 1em;
}
div.expander {
border: 1px solid #bbb;
}
div.expander_title {
/*border-bottom: 0px solid #aaa;*/
}
div.expander_content {
margin-left: 2em;
display: none;
padding-bottom: 1em;
}
div.expander_content dl{
margin: 0;
padding: 0;
}
table th {
font-weight: normal;
background-color: #ccc;
text-align: left;
}
span.component {
background-color: #060;
padding-left: 0.5em;
padding-top: 0.1em;
padding-bottom: 0.1em;
display: block;
float: left;
overflow: hidden;
width: 4em;
color: white;
border: 1px solid gray;
border: 1px solid white;
clear: both;
}
span.type {
display: block;
background-color: #006;
padding-left: 0.5em;
clear: both;
padding-top: 0.1em;
padding-bottom: 0.1em;
float: left;
overflow: hidden;
width: 4em;
color: white;
border: 1px solid white;
}
.nopad {
margin :0;
padding:0;
}
td.component {
background-color: #060;
padding-left: 0.5em;
padding-top: 0.1em;
padding-bottom: 0.1em;
overflow: hidden;
width: 4em;
color: white;
border: 1px solid white;
}
td.type {
background-color: #006;
padding-left: 0.5em;
padding-top: 0.1em;
padding-bottom: 0.1em;
overflow: hidden;
width: 4em;
color: white;
border: 1px solid white;
}
span.spacer {
float: left;
display: block;
overflow: hidden;
width: 0.2em;
}
span.name {
width: 100%;
display: block;
overflow: hidden;
border-top: 1px solid #ccc;
}
span.string {
color: #060;
}
span.function {
color: #006;
}
span.paren {
color: #555;
}
span.NULL {
color: #555;
}
pre.authors {
font-size: 100%;
font-family: FreeSans, Verdana, sans-serif;
position: relative;
top: -2em;
}
img.BablFish {
float: right;
position: relative;
top: -8px;
border: none;
}
td.op_name {
padding-top: 2.5em;
padding-bottom: 1.0em;
font-weight: bold;
font-size: 120%;
}
td.op_description {
padding-bottom: 1em;
}
td.prop_type {
color: gray;
font-style: italic;
}
td.prop_name {
font-weight: bold;
}
td.prop_blurb {
padding-bottom: 0.5em;
}
@media screen {
body {
font-family: FreeSans, Verdana, sans-serif;
max-width: 45em;
}
a {
text-decoration: none;
}
pre {
overflow: auto;
}
h1 {
display: none;
}
div#toc {
background-color: #333;
/*position: absolute;
position: fixed;*/
width: 12em;
top: 0;
right: 0;
z-index: 2;
height: 100%;
overflow: auto;
float: right;
padding-top: 0.5em;
}
div#toc ul {
padding-top: 0em;
padding-left: 0em;
margin: 0;
}
div#toc li {
display: block;
padding-right: 1em;
}
div#toc li a,
div#toc div a{
display: block;
padding-left: 1em;
padding-right: 1em;
color: #fff;
}
div#toc li a:hover,
div#toc div a:hover{
color: #fff;
background-color: #445;
}
div#toc li a:active,
div#toc div a:active{
color: #000;
background-color: #445;
}
div#toc .toclevel1 {
padding-top: 0.5em;
padding-left: 0em;
}
div#toc .toclevel2 {
padding-left: 1em;
}
#toctitle {
display: none;
}
div.paper {
max-width: 45em;
-moz-border-radius: 1em;
}
div.content {
}
div.print {
display: none;
}
ul.crucible {margin:0; padding:0}
ul.crucible li{display: inline;}
}
h2#gegl {
display: none;
}
@media print {
body {
background-color: none;
font-family: FreeSans, Verdana, sans-serif;
}
a, em {
/* XXX: work-around for rendering bug, should investigate whether
* this issue is fixed in the latest gecko
*/
padding-right: 3em;
padding-left: 1em;
}
a {
text-decoration: none;
}
div#toc ul {
padding-left: 0em;
float: right;
margin: 0;
}
div#toc li {
display: block;
padding-right: 1em;
}
div#toc li a{
display: block;
padding-left: 1em;
padding-right: 1em;
color: #fff;
}
div#toc li a:hover {
color: #fff;
background-color: #333;
}
div#toc ul {
padding-left: 0em;
float: none;
margin: 0;
margin-left: 1em;
}
div#toc {
position: absolute;
width: 200px;
top: 0;
left: 2em;
padding-top: 2em;
z-index: 2;
}
div#toc ul {
margin-left: 0;
}
div#toc li a {
color : #000;
}
div#toc h2 {
margin: 0;
padding: 0;
}
h1 {
margin-left: -0.75em;
}
h2 {
padding-top: 4em;
margin-left: -1em;
}
h3 {
padding-top: 4em;
margin-left: -1em;
}
span.component {
background-color: #7f7;
color: black;
}
span.type {
background-color: #aaf;
color: black;
}
table th {
font-weight: bold;
}
div.print_title {
position: absolute;
top: 3em;
padding-left: 2em;
margin-left: 280px;
}
div.paper {
padding-top: 4em;
}
div.graphic {
display: none;
background-color: #bbf;
height: 100%;
}
div.graphic img {
position: absolute;
bottom: 0;
left: 0;
}
div.screen {
display: none;
}
}
a{color:#44f;}
a:visited{color:#44f;}
</style>
<script type="text/javascript">
/*<![CDATA[*/
var asciidoc = { // Namespace.
/////////////////////////////////////////////////////////////////////
// Table Of Contents generator
/////////////////////////////////////////////////////////////////////
/* Author: Mihai Bazon, September 2002
* http://students.infoiasi.ro/~mishoo
*
* Table Of Content generator
* Version: 0.4
*
* Feel free to use this script under the terms of the GNU General Public
* License, as long as you do not remove or alter this notice.
*/
/* modified by Troy D. Hanson, September 2006. License: GPL */
/* modified by Stuart Rackham, 2006, 2009. License: GPL */
// toclevels = 1..4.
toc: function (toclevels) {
function getText(el) {
var text = "";
for (var i = el.firstChild; i != null; i = i.nextSibling) {
if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
text += i.data;
else if (i.firstChild != null)
text += getText(i);
}
return text;
}
function TocEntry(el, text, toclevel) {
this.element = el;
this.text = text;
this.toclevel = toclevel;
}
function tocEntries(el, toclevels) {
var result = new Array;
var re = new RegExp('[hH]([1-'+(toclevels+1)+'])');
// Function that scans the DOM tree for header elements (the DOM2
// nodeIterator API would be a better technique but not supported by all
// browsers).
var iterate = function (el) {
for (var i = el.firstChild; i != null; i = i.nextSibling) {
if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
var mo = re.exec(i.tagName);
if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
}
iterate(i);
}
}
}
iterate(el);
return result;
}
var toc = document.getElementById("toc");
if (!toc) {
return;
}
// Delete existing TOC entries in case we're reloading the TOC.
var tocEntriesToRemove = [];
var i;
for (i = 0; i < toc.childNodes.length; i++) {
var entry = toc.childNodes[i];
if (entry.nodeName.toLowerCase() == 'div'
&& entry.getAttribute("class")
&& entry.getAttribute("class").match(/^toclevel/))
tocEntriesToRemove.push(entry);
}
for (i = 0; i < tocEntriesToRemove.length; i++) {
toc.removeChild(tocEntriesToRemove[i]);
}
// Rebuild TOC entries.
var entries = tocEntries(document.getElementById("content"), toclevels);
for (var i = 0; i < entries.length; ++i) {
var entry = entries[i];
if (entry.element.id == "")
entry.element.id = "_toc_" + i;
var a = document.createElement("a");
a.href = "#" + entry.element.id;
a.appendChild(document.createTextNode(entry.text));
var div = document.createElement("div");
div.appendChild(a);
div.className = "toclevel" + entry.toclevel;
toc.appendChild(div);
}
if (entries.length == 0)
toc.parentNode.removeChild(toc);
},
/////////////////////////////////////////////////////////////////////
// Footnotes generator
/////////////////////////////////////////////////////////////////////
/* Based on footnote generation code from:
* http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
*/
footnotes: function () {
// Delete existing footnote entries in case we're reloading the footnodes.
var i;
var noteholder = document.getElementById("footnotes");
if (!noteholder) {
return;
}
var entriesToRemove = [];
for (i = 0; i < noteholder.childNodes.length; i++) {
var entry = noteholder.childNodes[i];
if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote")
entriesToRemove.push(entry);
}
for (i = 0; i < entriesToRemove.length; i++) {
noteholder.removeChild(entriesToRemove[i]);
}
// Rebuild footnote entries.
var cont = document.getElementById("content");
var spans = cont.getElementsByTagName("span");
var refs = {};
var n = 0;
for (i=0; i<spans.length; i++) {
if (spans[i].className == "footnote") {
n++;
var note = spans[i].getAttribute("data-note");
if (!note) {
// Use [\s\S] in place of . so multi-line matches work.
// Because JavaScript has no s (dotall) regex flag.
note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
spans[i].innerHTML =
"[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
"' title='View footnote' class='footnote'>" + n + "</a>]";
spans[i].setAttribute("data-note", note);
}
noteholder.innerHTML +=
"<div class='footnote' id='_footnote_" + n + "'>" +
"<a href='#_footnoteref_" + n + "' title='Return to text'>" +
n + "</a>. " + note + "</div>";
var id =spans[i].getAttribute("id");
if (id != null) refs["#"+id] = n;
}
}
if (n == 0)
noteholder.parentNode.removeChild(noteholder);
else {
// Process footnoterefs.
for (i=0; i<spans.length; i++) {
if (spans[i].className == "footnoteref") {
var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
href = href.match(/#.*/)[0]; // Because IE return full URL.
n = refs[href];
spans[i].innerHTML =
"[<a href='#_footnote_" + n +
"' title='View footnote' class='footnote'>" + n + "</a>]";
}
}
}
},
install: function(toclevels) {
var timerId;
function reinstall() {
asciidoc.footnotes();
if (toclevels) {
asciidoc.toc(toclevels);
}
}
function reinstallAndRemoveTimer() {
clearInterval(timerId);
reinstall();
}
timerId = setInterval(reinstall, 500);
if (document.addEventListener)
document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
else
window.onload = reinstallAndRemoveTimer;
}
}
asciidoc.install();
/*]]>*/
</script>
</head>
<body class="article">
<div id="header">
</div>
<div id="content">
<div class="paragraph"><p>Journal / transaction log</p></div>
<div class="paragraph"><p>The journal stores the changes done to a GEGL graph as a set of transactions.
This journal can be used as a syncronization point for multiple users of
a GEGL graph, and can be stored as a file. This file can be embedded into
a higher level file format to persist undo/redo history across saves/loads
of a document.
A program using GEGL may use several independent GEGL graphs, and thus several
independent journals.</p></div>
<div class="sect1">
<h2 id="_usecases">Usecases</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Base for undo/redo stacks in GEGL based applications
</p>
</li>
<li>
<p>
Automated testing of GEGL graph manipulation API and interactive view widgets
</p>
</li>
<li>
<p>
Sharing and manipulation of a GEGL graph between multiple programs
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_operations">Operations</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Add node. int parent_node_id, int new_node_id
</p>
</li>
<li>
<p>
Remove node. int node_id, int previous_parent_node_id
</p>
</li>
<li>
<p>
Link pads. int sink_node_id, char *input_pad_name, int source_node_id, char *output_pad_name
</p>
</li>
<li>
<p>
Unlink pads. int sink_node_id, char *input_pad_name, int source_node_id, char *output_pad_name
</p>
</li>
<li>
<p>
Change property. int node_id, char *key, char *value, char *previous_value
</p>
</li>
<li>
<p>
Change operation. int node_id, char *new_operation_name, char *previous_operation_name
</p>
</li>
</ul></div>
<div class="paragraph"><p>Each operation is stored such that the inverse operation can be created
from the stored information alone. This avoids the need to rewind and replay
parts of the journal when undoing.
Property values are stored using property-type specific serialization.</p></div>
<div class="paragraph"><p>Node references/identifiers:
- GEGL to maintain an (graph) unique identifier for each node: Add an integer identifier to node when added to the graph.
- The identifier must be be maintained when changing operations.
- This identifier should be hidden from applications: could be done by making the property read-only in public interface.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_transactions">Transactions</h2>
<div class="sectionbody">
<div class="paragraph"><p>The operations are grouped in transactions. Applications can decide the start and end of a transaction.
If no transaction is explicitly opened, an implicit transaction for the duration of the operation is created.</p></div>
<div class="paragraph"><p>After a add node operation, one or more change property and change operation operations must follow.</p></div>
<div class="paragraph"><p>Transaction operation:
- Recall state. int block_no, int previous_transaction_block_no
The block_no must be for a transaction start
Sets the graph state back to that of the given transaction</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_file_format">File format</h2>
<div class="sectionbody">
<div class="paragraph"><p>Append only file format consisting of a series of entries.</p></div>
<div class="paragraph"><p>Entries can span a number of blocks, except for transaction end which must
consist of one block, and file header which must consist of 4 blocks (?)</p></div>
<div class="paragraph"><p>Entry format:
Each block entry has has a size of X times Y block. An integer in the start
of the entry specifies how many blocks the entry consists of.
Each entry has a integer type, denoting what kind of entry it is.</p></div>
<div class="paragraph"><p>Each entry has an integer entry_size denoting number of blocks the entry consists of.
Integer precision: 32 bit?
Block size: 32 bytes?</p></div>
<div class="paragraph"><p>File Header:
- Stores a lock with PID for the active process.
The lock is taken when a transaction starts, and released on transaction end.
Other applications can check whether the PID is for an alive process.
The header is not subject to the append-only rule.</p></div>
<div class="paragraph"><p>Transaction start:
- Stores a human string description of the change
? maybe a transaction size in blocks (can be used to quickly traverse forward)</p></div>
<div class="paragraph"><p>Transaction end:
Contains a pointer to the start of transaction, as an integer of the transaction start entry.
If the pointer ever points to a non-transaction start entry, the journal is inconsistent.</p></div>
<div class="paragraph"><p>Operation entries:
Each entry (see above list) has a format depending on its type.</p></div>
<div class="sect2">
<h3 id="_example">Example</h3>
<div class="literalblock">
<div class="content">
<pre><code>---------------------
| file header |
---------------------
| transaction start |
---------------------
| add node |
---------------------
| set property |
---------------------
| set property |
---------------------
| link pads |
---------------------
| transaction end |
---------------------
| transaction start |
---------------------
| remove node |
---------------------
| transaction end |
---------------------</code></pre>
</div></div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_public_api">Public API</h2>
<div class="sectionbody">
<div class="paragraph"><p>void gegl_graph_transaction_start(GeglGraph *graph, const char *description);
Start a graph journal transaction.
Any graph change after this and before transaction_end will be recorded
as part of the transaction.
@graph: top-level node in a GEGL graph
@description a human readable description of the change. UTF-8 encoded</p></div>
<div class="paragraph"><p>void gegl_graph_transaction_end(GeglGraph *graph);
End the current graph journal transaction.
@graph: top-level node in a GEGL graph</p></div>
<div class="paragraph"><p>int gegl_graph_transaction_previous(GeglGraph *graph, int block_no);
Return the block number of the transaction before the specified transaction. Does not change graph state.
@graph: top-level node in a GEGL graph
@block_no ⇐ 0 means end of journal. Only block numbers for transaction start entries are valid
@return -1 on invalid block_no, else the block number of the previous transaction</p></div>
<div class="paragraph"><p>int gegl_graph_transaction_recall(GeglGraph *graph, int block_no);
Recall a previous state of the graph.
@graph: top-level node in a GEGL graph
@block_no ⇐ 0 means end of journal. Only block numbers for transaction start entries are valid
@return -1 on invalid block_no, else the block number of the new transaction.</p></div>
<div class="paragraph"><p>char *gegl_graph_transaction_get_description(GeglGraph *graph, int block_no);
Return the human readable description for a given transaction.
@graph: top-level node in a GEGL graph
@block_no Only block numbers for transaction start entries are valid
@return NULL on invalid block_no, else the human readable description passed to transaction_start</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_implementation_notes">Implementation notes</h2>
<div class="sectionbody">
<div class="paragraph"><p>The implementation could be based on the GeglBuffer file format implementation.
It is suggested to keep the implementations separate, to risk avoid introducing
regressions in exist code and because it is possible that GeglBuffer will be
moved to a separate library at some point.</p></div>
<div class="paragraph"><p>Before writing a transaction into the log, the transaction should be compacted
such that no superficial operations are stored. For example if a property
was first changed from 1.0 to 2.0 and then to 3.0, only one operation should
be recorded.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_ideas">Ideas</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Allow to peek at other versions of the graph in the journal?
</p>
</li>
<li>
<p>
Add API for compacting the journal (to avoid it growing without bounds).
</p>
</li>
<li>
<p>
Add a non-blocking version of transactions.
Note: not guaranteed to succeed. Applications must gracefully handle the transaction being rejected.
</p>
<div class="literalblock">
<div class="content">
<pre><code>void gegl_graph_transaction_open(GeglGraph *graph, const char *description);
gboolean gegl_graph_transaction_commit(GeglGraph *graph);</code></pre>
</div></div>
</li>
</ul></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
2017-09-21 21:11:00 CEST
</div>
</div>
</body>
</html>
|