<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - ex6.mu</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-dark">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #a8a8a8; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #a8a8a8; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.PreProc { color: #c000c0; }
.muRegEcx { color: #af875f; }
.Special { color: #ff6060; }
.LineNr { }
.Constant { color: #008787; }
.muRegEax { color: #875f00; }
.Delimiter { color: #c000c0; }
.muFunction { color: #af5f00; text-decoration: underline; }
.muComment { color: #005faf; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
var lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<a href='https://github.com/akkartik/mu/blob/main/ex6.mu'>https://github.com/akkartik/mu/blob/main/ex6.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="muComment"># Drawing ASCII text incrementally.</span>
<span id="L2" class="LineNr"> 2 </span><span class="muComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="muComment"># To build a disk image:</span>
<span id="L4" class="LineNr"> 4 </span><span class="muComment"># ./translate ex6.mu # emits code.img</span>
<span id="L5" class="LineNr"> 5 </span><span class="muComment"># To run:</span>
<span id="L6" class="LineNr"> 6 </span><span class="muComment"># qemu-system-i386 code.img</span>
<span id="L7" class="LineNr"> 7 </span><span class="muComment"># Or:</span>
<span id="L8" class="LineNr"> 8 </span><span class="muComment"># bochs -f bochsrc # bochsrc loads code.img</span>
<span id="L9" class="LineNr"> 9 </span><span class="muComment">#</span>
<span id="L10" class="LineNr">10 </span><span class="muComment"># Expected output: a box and text that doesn't overflow it</span>
<span id="L11" class="LineNr">11 </span>
<span id="L12" class="LineNr">12 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex6.mu.html#L12'>main</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), keyboard: (addr keyboard), data-disk: (addr disk) <span class="Delimiter">{</span>
<span id="L13" class="LineNr">13 </span> <span class="muComment"># drawing text within a bounding box</span>
<span id="L14" class="LineNr">14 </span> <a href='503manhattan-line.mu.html#L1'>draw-box-on-real-screen</a> <span class="Constant">0xf</span>, <span class="Constant">0x1f</span>, <span class="Constant">0x79</span>, <span class="Constant">0x51</span>, <span class="Constant">0x4</span>
<span id="L15" class="LineNr">15 </span> <span class="PreProc">var</span> x/<span class="muRegEax">eax</span>: int <span class="Special"><-</span> copy <span class="Constant">0x20</span>
<span id="L16" class="LineNr">16 </span> <span class="PreProc">var</span> y/<span class="muRegEcx">ecx</span>: int <span class="Special"><-</span> copy <span class="Constant">0x20</span>
<span id="L17" class="LineNr">17 </span> x, y <span class="Special"><-</span> <a href='501draw-text.mu.html#L174'>draw-text-wrapping-right-then-down</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"hello "</span>, <span class="Constant">0x10</span>/xmin, <span class="Constant">0x20</span>/ymin, <span class="Constant">0x78</span>/xmax, <span class="Constant">0x50</span>/ymax, x, y, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L18" class="LineNr">18 </span> x, y <span class="Special"><-</span> <a href='501draw-text.mu.html#L174'>draw-text-wrapping-right-then-down</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"from "</span>, <span class="Constant">0x10</span>/xmin, <span class="Constant">0x20</span>/ymin, <span class="Constant">0x78</span>/xmax, <span class="Constant">0x50</span>/ymax, x, y, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L19" class="LineNr">19 </span> x, y <span class="Special"><-</span> <a href='501draw-text.mu.html#L174'>draw-text-wrapping-right-then-down</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"baremetal "</span>, <span class="Constant">0x10</span>/xmin, <span class="Constant">0x20</span>/ymin, <span class="Constant">0x78</span>/xmax, <span class="Constant">0x50</span>/ymax, x, y, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L20" class="LineNr">20 </span> x, y <span class="Special"><-</span> <a href='501draw-text.mu.html#L174'>draw-text-wrapping-right-then-down</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"Mu!"</span>, <span class="Constant">0x10</span>/xmin, <span class="Constant">0x20</span>/ymin, <span class="Constant">0x78</span>/xmax, <span class="Constant">0x50</span>/ymax, x, y, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L21" class="LineNr">21 </span>
<span id="L22" class="LineNr">22 </span> <span class="muComment"># drawing at the cursor in multiple directions</span>
<span id="L23" class="LineNr">23 </span> <a href='501draw-text.mu.html#L493'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"abc"</span>, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L24" class="LineNr">24 </span> <a href='501draw-text.mu.html#L279'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"def"</span>, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L25" class="LineNr">25 </span>
<span id="L26" class="LineNr">26 </span> <span class="muComment"># test drawing near the edge</span>
<span id="L27" class="LineNr">27 </span> x <span class="Special"><-</span> <a href='501draw-text.mu.html#L100'>draw-text-rightward</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"R"</span>, <span class="Constant">0x7f</span>/x, <span class="Constant">0x80</span>/xmax=screen-width, <span class="Constant">0x18</span>/y, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L28" class="LineNr">28 </span> <a href='501draw-text.mu.html#L279'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"wrapped from R"</span>, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L29" class="LineNr">29 </span>
<span id="L30" class="LineNr">30 </span> x <span class="Special"><-</span> <a href='501draw-text.mu.html#L399'>draw-text-downward</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"D"</span>, <span class="Constant">0x20</span>/x, <span class="Constant">0x2f</span>/y, <span class="Constant">0x30</span>/ymax=screen-height, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L31" class="LineNr">31 </span> <a href='501draw-text.mu.html#L493'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">"wrapped from D"</span>, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L32" class="LineNr">32 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->