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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>14 Rendering</title><link rel="stylesheet" type="text/css" href="../scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="../racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-style.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../doc-site.css" title="default"/><script type="text/javascript" src="../scribble-common.js"></script><script type="text/javascript" src="../manual-racket.js"></script><script type="text/javascript" src="../doc-site.js"></script><script type="text/javascript" src="../local-redirect/local-redirect.js"></script><script type="text/javascript" src="../local-redirect/local-user-redirect.js"></script><!--[if IE 6]><style type="text/css">.SIEHidden { overflow: hidden; }</style><![endif]--></head><body id="doc-racket-lang-org"><div class="tocset"><div class="tocview"><div class="tocviewlist tocviewlisttopspace"><div class="tocviewtitle"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_0");">▼</a></td><td></td><td><a href="index.html" class="tocviewlink" data-pltdoc="x">Pict:<span class="mywbr"> </span> Functional Pictures</a></td></tr></table></div><div class="tocviewsublistonly" style="display: block;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1 </td><td><a href="Pict_Datatype.html" class="tocviewlink" data-pltdoc="x">Pict Datatype</a></td></tr><tr><td align="right">2 </td><td><a href="Basic_Pict_Constructors.html" class="tocviewlink" data-pltdoc="x">Basic Pict Constructors</a></td></tr><tr><td align="right">3 </td><td><a href="Pict_Combiners.html" class="tocviewlink" data-pltdoc="x">Pict Combiners</a></td></tr><tr><td align="right">4 </td><td><a href="Pict_Drawing_Adjusters.html" class="tocviewlink" data-pltdoc="x">Pict Drawing Adjusters</a></td></tr><tr><td align="right">5 </td><td><a href="Bounding_Box_Adjusters.html" class="tocviewlink" data-pltdoc="x">Bounding Box Adjusters</a></td></tr><tr><td align="right">6 </td><td><a href="Pict_Finders.html" class="tocviewlink" data-pltdoc="x">Pict Finders</a></td></tr><tr><td align="right">7 </td><td><a href="More_Pict_Constructors.html" class="tocviewlink" data-pltdoc="x">More Pict Constructors</a></td></tr><tr><td align="right">8 </td><td><a href="Animation_Helpers.html" class="tocviewlink" data-pltdoc="x">Animation Helpers</a></td></tr><tr><td align="right">9 </td><td><a href="Color_Helpers.html" class="tocviewlink" data-pltdoc="x">Color Helpers</a></td></tr><tr><td align="right">10 </td><td><a href="Shadows.html" class="tocviewlink" data-pltdoc="x">Shadows</a></td></tr><tr><td align="right">11 </td><td><a href="Conditional_Combinations.html" class="tocviewlink" data-pltdoc="x">Conditional Combinations</a></td></tr><tr><td align="right">12 </td><td><a href="Tree_Layout.html" class="tocviewlink" data-pltdoc="x">Tree Layout</a></td></tr><tr><td align="right">13 </td><td><a href="Miscellaneous.html" class="tocviewlink" data-pltdoc="x">Miscellaneous</a></td></tr><tr><td align="right">14 </td><td><a href="" class="tocviewselflink" data-pltdoc="x">Rendering</a></td></tr><tr><td align="right">15 </td><td><a href="Conversion_to_Picts.html" class="tocviewlink" data-pltdoc="x">Conversion to Picts</a></td></tr></table></div></div></div><div class="tocsub"><div class="tocsubtitle">On this page:</div><table class="tocsublist" cellspacing="0"><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._dc-for-text-size%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">dc-<wbr></wbr>for-<wbr></wbr>text-<wbr></wbr>size</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._convert-bounds-padding%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">convert-<wbr></wbr>bounds-<wbr></wbr>padding</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._draw-pict%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">draw-<wbr></wbr>pict</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3ebitmap%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">pict-<wbr></wbr>>bitmap</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3eargb-pixels%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">pict-<wbr></wbr>>argb-<wbr></wbr>pixels</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._argb-pixels-~3epict%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">argb-<wbr></wbr>pixels-<wbr></wbr>>pict</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._make-pict-drawer%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">make-<wbr></wbr>pict-<wbr></wbr>drawer</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._show-pict%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">show-<wbr></wbr>pict</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._current-expected-text-scale%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">current-<wbr></wbr>expected-<wbr></wbr>text-<wbr></wbr>scale</span></span></a></td></tr></table></div></div><div class="maincolumn"><div class="main"><div class="navsettop"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.3", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> <a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot("6.3");">top</a></span><span class="navright"> <a href="Miscellaneous.html" title="backward to "13 Miscellaneous"" data-pltdoc="x">← prev</a> <a href="index.html" title="up to "Pict: Functional Pictures"" data-pltdoc="x">up</a> <a href="Conversion_to_Picts.html" title="forward to "15 Conversion to Picts"" data-pltdoc="x">next →</a></span> </div><h3 x-source-module="(lib "pict/scribblings/pict.scrbl")" x-source-pkg="pict-doc" x-part-tag=""Rendering"">14<tt> </tt><a name="(part._.Rendering)"></a>Rendering</h3><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>parameter</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._dc-for-text-size))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._dc-for-text-size%29%29" class="RktValDef RktValLink" data-pltdoc="x">dc-for-text-size</a></span></span><span class="RktPn"></span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">#f</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=Object_and_Class_Contracts.html%23%2528def._%2528%2528lib._racket%252Fclass..rkt%2529._is-a%7E3f%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">is-a?/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=dc___.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">dc<%></a></span><span class="RktPn">)</span><span class="RktPn">)</span></p></blockquote></td></tr><tr><td><span class="RktPn">(</span><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._dc-for-text-size%29%29" class="RktValDef RktValLink" data-pltdoc="x">dc-for-text-size</a></span></span><span class="hspace"> </span><span class="RktVar">dc</span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=void.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._void%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">void?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">dc</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">#f</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=Object_and_Class_Contracts.html%23%2528def._%2528%2528lib._racket%252Fclass..rkt%2529._is-a%7E3f%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">is-a?/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=dc___.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">dc<%></a></span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></blockquote></div><div class="SIntrapara">A parameter that is used to determine the <a href="Pict_Datatype.html#%28tech._bounding._box%29" class="techoutside" data-pltdoc="x"><span class="techinside">bounding box</span></a> of picts
created with <span class="RktSym"><a href="Basic_Pict_Constructors.html#%28def._%28%28lib._pict%2Fmain..rkt%29._text%29%29" class="RktValLink" data-pltdoc="x">text</a></span>.</div></p><p>The drawing context installed in this parameter need not be the same
as the ultimate drawing context, but it should measure text in the same
way. Under normal circumstances, font metrics are the same for all
drawing contexts, so the default value of <span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._dc-for-text-size%29%29" class="RktValLink" data-pltdoc="x">dc-for-text-size</a></span> is
a <span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=bitmap-dc_.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">bitmap-dc%</a></span> that draws to a 1-by-1 bitmap.</p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>parameter</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._convert-bounds-padding))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._convert-bounds-padding%29%29" class="RktValDef RktValLink" data-pltdoc="x">convert-bounds-padding</a></span></span><span class="RktPn"></span><span class="RktPn">)</span></p></blockquote></td></tr><tr><td><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._list%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">list/c</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="RktPn">(</span><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._convert-bounds-padding%29%29" class="RktValDef RktValLink" data-pltdoc="x">convert-bounds-padding</a></span></span><span class="hspace"> </span><span class="RktVar">padding</span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=void.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._void%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">void?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">padding</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._list%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">list/c</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._%7E3e%7E3d%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">>=/c</a></span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></blockquote></div><div class="SIntrapara">A parameter that determines an amount of padding added to each edge of
a <a href="Pict_Datatype.html#%28tech._pict%29" class="techoutside" data-pltdoc="x"><span class="techinside">pict</span></a> when converting to a format like <span class="RktVal">'</span><span class="RktVal">png@2x-bytes+bounds8</span>
(see <a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=file&rel=convertible.html&version=6.3" class="RktModLink Sq" data-pltdoc="x"><span class="RktSym">file/convertible</span></a>). The default value of the parameter
is <span class="RktVal">'</span><span class="RktVal">(</span><span class="RktVal">3</span><span class="stt"> </span><span class="RktVal">3</span><span class="stt"> </span><span class="RktVal">3</span><span class="stt"> </span><span class="RktVal">3</span><span class="RktVal">)</span>, which adds three pixels to each edge to accommodate
a small amount of drawing outside the pict’s <a href="Pict_Datatype.html#%28tech._bounding._box%29" class="techoutside" data-pltdoc="x"><span class="techinside">bounding box</span></a>.</div></p><p class="SHistory">Added in version 1.2 of package <span class="stt">pict-lib</span>.</p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._draw-pict))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._draw-pict%29%29" class="RktValDef RktValLink" data-pltdoc="x">draw-pict</a></span></span><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span><span class="RktVar">dc</span><span class="hspace"> </span><span class="RktVar">x</span><span class="hspace"> </span><span class="RktVar">y</span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=void.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._void%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">void?</a></span></p></blockquote></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="Pict_Datatype.html#%28def._%28%28lib._pict%2Fmain..rkt%29._pict~3f%29%29" class="RktValLink" data-pltdoc="x">pict?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">dc</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=Object_and_Class_Contracts.html%23%2528def._%2528%2528lib._racket%252Fclass..rkt%2529._is-a%7E3f%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">is-a?/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=dc___.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">dc<%></a></span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">x</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">y</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span></td></tr></table></blockquote></div><div class="SIntrapara">Draws <span class="RktVar">pict</span> to <span class="RktVar">dc</span>, with its top-left corner at offset
(<span class="RktVar">x</span>, <span class="RktVar">y</span>).</div></p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._pict-~3ebitmap))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3ebitmap%29%29" class="RktValDef RktValLink" data-pltdoc="x">pict->bitmap</a></span></span><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>[<span class="RktVar">smoothing</span>]<span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=Object_and_Class_Contracts.html%23%2528def._%2528%2528lib._racket%252Fclass..rkt%2529._is-a%7E3f%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">is-a?/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=bitmap_.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">bitmap%</a></span><span class="RktPn">)</span></p></blockquote></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="Pict_Datatype.html#%28def._%28%28lib._pict%2Fmain..rkt%29._pict~3f%29%29" class="RktValLink" data-pltdoc="x">pict?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">smoothing</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">unsmoothed</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">smoothed</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">aligned</span><span class="RktPn">)</span><span class="hspace"> </span>=<span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">aligned</span></td></tr></table></blockquote></div><div class="SIntrapara">Returns a <span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=bitmap_.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">bitmap%</a></span> with an alpha channel, no larger than <span class="RktVar">pict</span>,
with <span class="RktVar">pict</span> drawn on it in the top-left corner (<span class="RktVal">0</span>, <span class="RktVal">0</span>).</div></p><p>When drawing the pict into the bitmap using the smoothing mode <span class="RktVar">smoothing</span>
(see dc<%> for more information on smoothing modes).</p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._pict-~3eargb-pixels))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3eargb-pixels%29%29" class="RktValDef RktValLink" data-pltdoc="x">pict->argb-pixels</a></span></span><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>[<span class="RktVar">smoothing</span>]<span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._bytes%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">bytes?</a></span></p></blockquote></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="Pict_Datatype.html#%28def._%28%28lib._pict%2Fmain..rkt%29._pict~3f%29%29" class="RktValLink" data-pltdoc="x">pict?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">smoothing</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">unsmoothed</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">smoothed</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">aligned</span><span class="RktPn">)</span><span class="hspace"> </span>=<span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">aligned</span></td></tr></table></blockquote></div><div class="SIntrapara">Returns the <span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._bytes%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">bytes?</a></span> with the pixels corresponding the bitmap that <span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3ebitmap%29%29" class="RktValLink" data-pltdoc="x">pict->bitmap</a></span>
returns. Each pixel has four bytes in the result: the alpha, red, green, and blue components.</div></p><p><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><p>Examples:</p></td></tr><tr><td><blockquote class="SCodeFlow"><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><span class="stt">> </span><span class="RktPn">(</span><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3eargb-pixels%29%29" class="RktValLink" data-pltdoc="x">pict->argb-pixels</a></span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="Basic_Pict_Constructors.html#%28def._%28%28lib._pict%2Fmain..rkt%29._filled-rectangle%29%29" class="RktValLink" data-pltdoc="x">filled-rectangle</a></span><span class="hspace"> </span><span class="RktVal">1</span><span class="hspace"> </span><span class="RktVal">1</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></td></tr><tr><td><p><span class="RktRes">#"\377\0\0\0"</span></p></td></tr><tr><td><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><span class="stt">> </span><span class="RktPn">(</span><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._pict-~3eargb-pixels%29%29" class="RktValLink" data-pltdoc="x">pict->argb-pixels</a></span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="Pict_Drawing_Adjusters.html#%28def._%28%28lib._pict%2Fmain..rkt%29._colorize%29%29" class="RktValLink" data-pltdoc="x">colorize</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="Basic_Pict_Constructors.html#%28def._%28%28lib._pict%2Fmain..rkt%29._filled-rectangle%29%29" class="RktValLink" data-pltdoc="x">filled-rectangle</a></span><span class="hspace"> </span><span class="RktVal">1</span><span class="hspace"> </span><span class="RktVal">1</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">"red"</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></td></tr><tr><td><p><span class="RktRes">#"\377\377\0\0"</span></p></td></tr></table></blockquote></td></tr></table></p><p class="SHistory">Added in version 1.1 of package <span class="stt">pict-lib</span>.</p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._argb-pixels-~3epict))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._argb-pixels-~3epict%29%29" class="RktValDef RktValLink" data-pltdoc="x">argb-pixels->pict</a></span></span><span class="hspace"> </span><span class="RktVar">bytes</span><span class="hspace"> </span><span class="RktVar">width</span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="Pict_Datatype.html#%28def._%28%28lib._pict%2Fmain..rkt%29._pict~3f%29%29" class="RktValLink" data-pltdoc="x">pict?</a></span></p></blockquote></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">bytes</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._bytes%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">bytes?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">width</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._exact-nonnegative-integer%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">exact-nonnegative-integer?</a></span></td></tr></table></blockquote></div><div class="SIntrapara">Constructs a pict from <span class="RktVar">bytes</span> with the width <span class="RktVar">width</span>. Each pixel
in the resulting pict corresponds to four entries in <span class="RktVar">bytes</span>: the alpha value,
and the red, green, and blue values.</div></p><p><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><p>Example:</p></td></tr><tr><td><blockquote class="SCodeFlow"><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><span class="stt">> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=let.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fletstx-scheme..rkt%2529._let%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x">let</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">[</span><span class="RktSym">b</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._make-bytes%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">make-bytes</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._%252A%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">*</a></span><span class="hspace"> </span><span class="RktVal">40</span><span class="hspace"> </span><span class="RktVal">40</span><span class="hspace"> </span><span class="RktVal">4</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">255</span><span class="RktPn">)</span><span class="RktPn">]</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=for.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._for%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x">for</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">[</span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=sequences.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._in-range%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">in-range</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._bytes-length%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">bytes-length</a></span><span class="hspace"> </span><span class="RktSym">b</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">]</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktCmt">;</span><span class="RktCmt"> </span><span class="RktCmt">when in one of two vertical bands (10-20 & 30-40)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=when_unless.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fletstx-scheme..rkt%2529._when%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x">when</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=if.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fletstx-scheme..rkt%2529._or%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x">or</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._%7E3c%7E3d%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x"><=</a></span><span class="hspace"> </span><span class="RktVal">10</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._modulo%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">modulo</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._quotient%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">quotient</a></span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktVal">4</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">40</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">20</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._%7E3c%7E3d%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x"><=</a></span><span class="hspace"> </span><span class="RktVal">30</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._modulo%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">modulo</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._quotient%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">quotient</a></span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktVal">4</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">40</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">40</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktCmt">;</span><span class="RktCmt"> </span><span class="RktCmt">change the red and green fields of the pixel</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=when_unless.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fletstx-scheme..rkt%2529._when%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x">when</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._%7E3d%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">=</a></span><span class="hspace"> </span><span class="RktVal">1</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._modulo%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">modulo</a></span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktVal">4</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._bytes-set%2521%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">bytes-set!</a></span><span class="hspace"> </span><span class="RktSym">b</span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktVal">0</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=when_unless.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fletstx-scheme..rkt%2529._when%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x">when</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._%7E3d%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">=</a></span><span class="hspace"> </span><span class="RktVal">2</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._modulo%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">modulo</a></span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktVal">4</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._bytes-set%2521%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">bytes-set!</a></span><span class="hspace"> </span><span class="RktSym">b</span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktVal">150</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._argb-pixels-~3epict%29%29" class="RktValLink" data-pltdoc="x">argb-pixels->pict</a></span><span class="hspace"> </span><span class="RktSym">b</span><span class="hspace"> </span><span class="RktVal">40</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></td></tr><tr><td><p><img style="vertical-align: 0px; margin: -3px -3px -3px -3px;" src="pict_143.png" alt="image" width="46" height="46"/></p></td></tr></table></blockquote></td></tr></table></p><p class="SHistory">Added in version 1.1 of package <span class="stt">pict-lib</span>.</p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._make-pict-drawer))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._make-pict-drawer%29%29" class="RktValDef RktValLink" data-pltdoc="x">make-pict-drawer</a></span></span><span class="hspace"> </span><span class="RktVar">pict</span><span class="RktPn">)</span></p></blockquote></td></tr><tr><td><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=Object_and_Class_Contracts.html%23%2528def._%2528%2528lib._racket%252Fclass..rkt%2529._is-a%7E3f%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">is-a?/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=draw&rel=dc___.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">dc<%></a></span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span><span class="hspace"> </span><span class="RktPn">. </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=function-contracts.html%23%2528form._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._-%7E3e%2529%2529&version=6.3" class="RktStxLink Sq" data-pltdoc="x"><span class="nobreak">-></span></a></span><span class="RktPn"> .</span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=void.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._void%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">void?</a></span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="Pict_Datatype.html#%28def._%28%28lib._pict%2Fmain..rkt%29._pict~3f%29%29" class="RktValLink" data-pltdoc="x">pict?</a></span></td></tr></table></blockquote></div><div class="SIntrapara">Generates a pict-drawer procedure for multiple renderings of
<span class="RktVar">pict</span>. Using the generated procedure can be faster than
repeated calls to <span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._draw-pict%29%29" class="RktValLink" data-pltdoc="x">draw-pict</a></span>.</div></p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><table cellspacing="0" cellpadding="0" class="prototype RForeground"><tr><td valign="top"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._show-pict))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._show-pict%29%29" class="RktValDef RktValLink" data-pltdoc="x">show-pict</a></span></span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktVar">pict</span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td></tr><tr><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span>[</td><td valign="top"><span class="RktVar">w</span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td></tr><tr><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktVar">h</span>]</td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td></tr><tr><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktPn">#:frame-x</span><span class="hspace"> </span><span class="RktVar">frame-x</span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td></tr><tr><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktPn">#:frame-y</span><span class="hspace"> </span><span class="RktVar">frame-y</span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td></tr><tr><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktPn">#:frame-style</span><span class="hspace"> </span><span class="RktVar">frame-style</span><span class="RktPn">)</span></td><td valign="top"><span class="hspace"> </span></td><td valign="top">→</td><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=void.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._void%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">void?</a></span></td></tr></table></blockquote></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">pict</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="Pict_Datatype.html#%28def._%28%28lib._pict%2Fmain..rkt%29._pict~3f%29%29" class="RktValLink" data-pltdoc="x">pict?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">w</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">#f</span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._exact-nonnegative-integer%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">exact-nonnegative-integer?</a></span><span class="RktPn">)</span><span class="hspace"> </span>=<span class="hspace"> </span><span class="RktVal">#f</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">h</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">#f</span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._exact-nonnegative-integer%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">exact-nonnegative-integer?</a></span><span class="RktPn">)</span><span class="hspace"> </span>=<span class="hspace"> </span><span class="RktVal">#f</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">frame-x</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._integer-in%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">integer-in</a></span><span class="hspace"> </span><span class="RktVal"><span class="nobreak">-1</span>0000</span><span class="hspace"> </span><span class="RktVal">10000</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">#f</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">frame-y</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._integer-in%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">integer-in</a></span><span class="hspace"> </span><span class="RktVal"><span class="nobreak">-1</span>0000</span><span class="hspace"> </span><span class="RktVal">10000</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">#f</span><span class="RktPn">)</span></td></tr><tr><td><table cellspacing="0" cellpadding="0" class="argcontract"><tr><td valign="top"><span class="hspace"> </span></td><td valign="top"><span class="RktVar">frame-style</span></td><td valign="top"><span class="hspace"> </span></td><td valign="top">:</td><td valign="top"><span class="hspace"> </span></td><td valign="top"><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._listof%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">listof</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._or%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">or/c</a></span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">no-resize-border</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">no-caption</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">no-system-menu</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">hide-menu-bar</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">toolbar-button</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">float</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">metal</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></td></tr></table></td></tr></table></blockquote></div><div class="SIntrapara">Opens a frame that displays <span class="RktVar">pict</span>. The frame adds one method,
<span class="RktSym">set-pict</span>, which takes a pict to display. The optional
<span class="RktVar">w</span> and <span class="RktVar">h</span> arguments specify a minimum size for the
frame’s drawing area, and the <span class="RktVar">frame-x</span>, <span class="RktVar">frame-y</span>,
and <span class="RktVar">frame-style</span> keyword arguments behave in the same manner as <span class="RktSym">x</span>,
<span class="RktSym">y</span>, and <span class="RktSym">style</span> arguments for the <span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=gui&rel=frame_.html&version=6.3" class="RktValLink Sq" data-pltdoc="x">frame%</a></span>.</div></p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>parameter</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._pict/main..rkt)._current-expected-text-scale))"></a><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._current-expected-text-scale%29%29" class="RktValDef RktValLink" data-pltdoc="x">current-expected-text-scale</a></span></span><span class="RktPn"></span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._list%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">list/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span><span class="RktPn">)</span></p></blockquote></td></tr><tr><td><span class="RktPn">(</span><span title="Provided from: pict | Package: pict-lib"><span class="RktSym"><a href="#%28def._%28%28lib._pict%2Fmain..rkt%29._current-expected-text-scale%29%29" class="RktValDef RktValLink" data-pltdoc="x">current-expected-text-scale</a></span></span><span class="hspace"> </span><span class="RktVar">scales</span><span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=void.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._void%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">void?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">scales</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fprivate%252Fmisc..rkt%2529._list%252Fc%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">list/c</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.3/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._real%7E3f%2529%2529&version=6.3" class="RktValLink Sq" data-pltdoc="x">real?</a></span><span class="RktPn">)</span></td></tr></table></blockquote></div><div class="SIntrapara">A parameter used to refine text measurements to better match an
expected scaling of the image. The <span class="RktSym"><a href="Pict_Drawing_Adjusters.html#%28form._%28%28lib._pict%2Fmain..rkt%29._scale%2Fimprove-new-text%29%29" class="RktStxLink" data-pltdoc="x">scale/improve-new-text</a></span>
form sets this parameter while also scaling the resulting pict.</div></p><div class="navsetbottom"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.3", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> <a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot("6.3");">top</a></span><span class="navright"> <a href="Miscellaneous.html" title="backward to "13 Miscellaneous"" data-pltdoc="x">← prev</a> <a href="index.html" title="up to "Pict: Functional Pictures"" data-pltdoc="x">up</a> <a href="Conversion_to_Picts.html" title="forward to "15 Conversion to Picts"" data-pltdoc="x">next →</a></span> </div></div></div><div id="contextindicator"> </div></body></html>
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