ladi-website/lanv.html

990 lines
23 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="generator" content="AsciiDoc 10.2.0">
<meta name="keywords" content="LADI, canvas, LANV, lacanvas, flowcanvas, Ganv, HoustonPatchbay, GooCanvas, Cairographics">
<title>LANV, lacanvas, LADI Canvas</title>
<style type="text/css">
/*
* AsciiDoc 'ladi' theme, based on 'volnitsky' theme for xhtml11 and html5 backends.
* Based on css from http://volnitsky.com, which was in turn based on default
* theme from AsciiDoc
*
* FIXME: The styling is still a bit rough in places.
*
*/
/* Default font. */
body {
font-family: Georgia,"Times New Roman",Times,serif;
font-size: 16pt;
}
/* Title font. */
h1, h2, h3, h4, h5, h6,
div.title, caption.title,
thead, p.table.header,
#toctitle,
#author, #revnumber, #revdate, #revremark,
#footer {
font-family: Candara,Arial,sans-serif;
}
a.image { border-bottom: 0; }
#toc a {
border-bottom: 1px dotted #999999;
color: #3A3A4D !important;
text-decoration: none !important;
}
#toc a:hover {
border-bottom: 1px solid #6D4100;
color: #6D4100 !important;
text-decoration: none !important;
}
a { color: #666688; text-decoration: none; border-bottom: 1px dotted #666688; }
a:visited { color: #615FA0; border-bottom: 1px dotted #615FA0; }
a:hover { color: #6D4100; border-bottom: 1px solid #6D4100; }
em {
font-style: italic;
color: #444466;
}
strong {
font-weight: bold;
color: #444466;
}
h1, h2, h3, h4, h5, h6 {
color: #666688;
margin-bottom: 0.5em;
margin-right: 1em;
line-height: 1.3;
letter-spacing:+0.15em;
}
h1, h2, h3, h4, h5, h6 {
margin-left: 0em;
}
/* h1 { margin-left: 2em; } */
h2 { margin-left: 2em; }
/* h3 { margin-left: 4em; } */
/* h4 { margin-left: 5em; } */
/* h5 { margin-left: 6em; } */
/* h6 { margin-left: 7em; } */
h2 { border-bottom: 4px solid #ccd; }
h3 { border-bottom: 2px dotted #ccd; }
/* h2, h3 { border-bottom: 2px solid #ccd; } */
/* h2 { padding-top: 0.5em; } */
/* h3 { float: left; } */
/* h3 + * { clear: left; } */
div.banner {
background: #004455;
text-align: center;
color: #C6E9AF;
padding: 0;
margin: 0;
}
div.sectionbody {
margin-top: 0;
margin-left: 3em;
margin-right: 1em;
margin-bottom: 1em;
}
hr {
border: 1px solid #444466;
}
p {
margin-left: 0.5em;
margin-right: 0.5em;
margin-top: 0.5em;
margin-bottom: 0.5em;
}
ul, ol, li > p {
margin-top: 0;
}
pre {
padding: 0;
margin: 0;
}
#author {
color: #444466;
font-weight: bold;
font-size: 1.1em;
}
#footer {
font-size: small;
border-top: 2px solid silver;
margin: 0;
}
#footer-text {
/* float: left; */
padding: 1em;
text-align: center;
}
#footer-badges {
float: right;
padding: 0.5em;
}
#preamble {
margin-top: 1.5em;
margin-bottom: 1.5em;
}
div.tableblock, div.imageblock, div.exampleblock, div.verseblock,
div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
div.admonitionblock {
margin-top: 1.5em;
margin-bottom: 1.5em;
}
div.admonitionblock {
margin-top: 2.5em;
margin-bottom: 2.5em;
}
#content { /* Block element content. */
margin: 2em;
}
/* Block element titles. */
div.title, caption.title {
color: #444466;
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 silver;
padding: 0.5em;
}
div.listingblock > div.content {
border: 1px solid silver;
background: #f4f4f4;
padding: 0.5em;
}
div.quoteblock {
padding-left: 2.0em;
margin-right: 10%;
}
div.quoteblock > div.attribution {
padding-top: 0.5em;
text-align: right;
}
div.verseblock {
padding-left: 2.0em;
margin-right: 10%;
}
div.verseblock > pre.content {
font-family: 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: #444466;
padding-right: 0.5em;
}
div.admonitionblock td.content {
padding-left: 0.5em;
border-left: 2px solid silver;
}
div.exampleblock > div.content {
border-left: 2px solid silver;
padding: 0.5em;
}
div.imageblock div.content { padding-left: 0; }
span.image img { border-style: none; }
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: #444466;
}
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;
}
div.tableblock > table {
border: 3px solid #444466;
}
thead {
font-weight: bold;
color: #444466;
}
tfoot {
font-weight: bold;
}
td > div.verse {
white-space: pre;
}
p.table {
margin-top: 0;
}
/* Because the table frame attribute is overridden 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;
}
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: #444466;
}
td.hdlist2 {
vertical-align: top;
}
div.hdlist.compact tr {
margin: 0;
padding-bottom: 0;
}
.comment {
background: yellow;
}
@media print {
#footer-badges { display: none; }
}
#toctitle {
color: #666688;
font-size: 1.2em;
font-weight: bold;
margin-top: 1.0em;
margin-bottom: 0.1em;
}
div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 { margin-top: 0; margin-bottom: 0; }
div.toclevel1 { margin-top: 0.3em; margin-left: 0; font-size: 1.0em; }
div.toclevel2 { margin-top: 0.25em; margin-left: 2em; font-size: 0.9em; }
div.toclevel3 { margin-left: 4em; font-size: 0.8em; }
div.toclevel4 { margin-left: 6em; font-size: 0.8em; }
body {
margin: 0;
padding: 0;
}
.monospaced, tt, div.listingblock > div.content {
font-family: Consolas, "Andale Mono", "Courier New", monospace;
color: #004400;
background: #f4f4f4;
max-width: 80em;
line-height: 1.2em;
}
#header {
text-align: center;
margin: 2em;
}
#toc {
text-align: left;
margin-left: 3em;
max-width: 80%;
}
.paragraph p {
line-height: 1.5em;
/* margin: 1em; */
}
.paragraph p, li, dd, .content { max-width: 80em; }
.admonitionblock { max-width: 35em; }
div.sectionbody div.ulist > ul > li {
list-style-type: square;
color: #aaa;
}
div.sectionbody div.ulist > ul > li > * {
color: black;
/*font-size: 50%;*/
}
div.sectionbody div.ulist > ul > li div.ulist > ul > li {
color: #ccd ;
}
div.sectionbody div.ulist > ul > li div.ulist > ul > li > * {
color: black ;
}
em {
font-style: normal ! important;
font-weight: bold ! important;
color: #662222 ! important;
letter-spacing:+0.08em ! important;
}
span.underline { text-decoration: underline; }
span.overline { text-decoration: overline; }
span.line-through { text-decoration: line-through; }
/*
* html5 specific
*
* */
table.tableblock {
margin-top: 1.0em;
margin-bottom: 1.5em;
}
thead, p.tableblock.header {
font-weight: bold;
color: #666688;
}
p.tableblock {
margin-top: 0;
}
table.tableblock {
border-width: 3px;
border-spacing: 0px;
border-style: solid;
border-color: #444466;
border-collapse: collapse;
}
th.tableblock, td.tableblock {
border-width: 1px;
padding: 4px;
border-style: solid;
border-color: #444466;
}
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;
}
</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">
<h1>LANV, lacanvas, LADI Canvas</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="admonitionblock">
<table><tr>
<td class="icon">
<img alt="Note" src="data:image/png;base64,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">
</td>
<td class="content">
<div class="title">WORK IN PROGRESS</div>This is Work In Progress for adapting
<a href="https://drobilla.net/software/flowcanvas.html">flowcanvas</a> plus
<a href="https://ladish.org/">gladish</a> augmentations into new C library
along with adding new features, like port grouping.
Beware that in this WIP version of the text,
present tense may be used for not yet implemented things.</td>
</tr></table>
</div>
<div class="paragraph"><p><a href="https://ladish.org/lanv.html">LANV</a> is project to provide set of
libraries useful when creating visual representation of graphs on
raster display.</p></div>
<div class="paragraph"><p>Canvas drawing of modular DSP/Audio/MIDI flow and
finite-state machine graphs like:</p></div>
<div class="ulist"><ul>
<li>
<p>
<a href="https://jackaudio.org/">JACK Audio Connection Kit</a> graphs
</p>
</li>
<li>
<p>
graphs of <a href="https://lv2plug.in/">LV2 plugins</a>
</p>
</li>
<li>
<p>
graphs of DSP modules in kernel-mode
</p>
</li>
<li>
<p>
graphs of DSP modules in FPGA
</p>
</li>
</ul></div>
<div class="paragraph"><p>API with domain specific semantics at level similar to
<a href="https://drobilla.net/software/flowcanvas.html">flowcanvas</a>,
<a href="https://drobilla.net/software/ganv.html">Ganv</a> and
<a href="https://github.com/Houston4444/HoustonPatchbay">HoustonPatchbay</a>.</p></div>
<div class="paragraph"><p>Operates on top of lower level canvas library like
<a href="https://wiki.gnome.org/Projects/GooCanvas">GooCanvas</a>,
<a href="https://www.freshports.org/graphics/libgnomecanvas/">gnomecanvas</a>
or <a href="https://www.cairographics.org/">Cairo</a>.</p></div>
<div class="paragraph"><p>Features:</p></div>
<div class="ulist"><ul>
<li>
<p>
Minimal dependencies, plain C implementation.
In particular, C++ runtime library is to be pulled as dependency only
if C++ bindings are actually used.
</p>
</li>
<li>
<p>
flowcanvas/gladish-canvas/ganv/HoustonPatchbay-like domain level API
</p>
</li>
<li>
<p>
Libraries that target diverse set of raster UI environments:
</p>
<div class="ulist"><ul>
<li>
<p>
X11, especially via libxcb
</p>
</li>
<li>
<p>
libnsfb
</p>
</li>
<li>
<p>
linux framebuffer
</p>
</li>
<li>
<p>
sixel over tty
</p>
</li>
<li>
<p>
Hardware accelerated 2D rendering via:
</p>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
OpenVG
</p>
</li>
</ol></div>
</li>
<li>
<p>
Hardware accelerated 3D rendering via:
</p>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
OpenGL and GLX
</p>
</li>
<li>
<p>
OpenGL ES and EGL
</p>
</li>
</ol></div>
</li>
<li>
<p>
Widgets for diverse set of GUI toolkits:
</p>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
GNOME2/GTK2 (liblanv-gtk2)
</p>
</li>
<li>
<p>
GNOME3/GTK3 (liblanv-gtk3)
</p>
</li>
<li>
<p>
GNOME40/GTK4
</p>
</li>
<li>
<p>
KDE/Qt
</p>
</li>
</ol></div>
</li>
</ul></div>
</li>
<li>
<p>
Usable over range of lower level canvas layers, e.g.:
</p>
<div class="ulist"><ul>
<li>
<p>
GooCanvas (liblacanvas-goo-gtk3)
</p>
</li>
<li>
<p>
GnomeCanvas2, flowcanvas style (liblacanvas-gnome2)
</p>
</li>
<li>
<p>
Cairo, ganv style, but without GTK requirement. (liblacanvas-cairo)
</p>
</li>
</ul></div>
</li>
<li>
<p>
Port grouping (along with group-connect and group-disconnect)
</p>
</li>
<li>
<p>
Native Language Support (via gettext)
</p>
</li>
<li>
<p>
Colour theme support, including system-wide theme and custom themes.
</p>
</li>
<li>
<p>
Runtime customizable canvas background (liblanv-kilim)
via wallpaper-like raster or vector images in scaled or pattern mode.
</p>
</li>
<li>
<p>
Photo-realistic renderings (liblanv-photo):
</p>
<div class="ulist"><ul>
<li>
<p>
rack-mountable (liblanv-rack)
</p>
</li>
<li>
<p>
stage-floor (liblanv-floor)
</p>
</li>
</ul></div>
</li>
<li>
<p>
Language bindings:
</p>
<div class="ulist"><ul>
<li>
<p>
Python
</p>
</li>
<li>
<p>
Lua
</p>
</li>
<li>
<p>
C#
</p>
</li>
<li>
<p>
C++
</p>
</li>
<li>
<p>
Rust
</p>
</li>
<li>
<p>
Vala
</p>
</li>
</ul></div>
</li>
</ul></div>
</div>
</div>
</div>
<div id="footnotes"><hr></div>
<div id="footer">
<div id="footer-text">
Last updated
2022-09-16 12:17:29 EEST
</div>
</div>
</body>
</html>