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<!DOCTYPE html> <html> <head> <title>psdlayer.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="brightnesscontrast.html"> brightnesscontrast.coffee </a> <a class="source" href="colorbalance.html"> colorbalance.coffee </a> <a class="source" href="curves.html"> curves.coffee </a> <a class="source" href="huesaturation.html"> huesaturation.coffee </a> <a class="source" href="invert.html"> invert.coffee </a> <a class="source" href="layereffect.html"> layereffect.coffee </a> <a class="source" href="levels.html"> levels.coffee </a> <a class="source" href="posterize.html"> posterize.coffee </a> <a class="source" href="selectivecolor.html"> selectivecolor.coffee </a> <a class="source" href="threshold.html"> threshold.coffee </a> <a class="source" href="typetool.html"> typetool.coffee </a> <a class="source" href="log.html"> log.coffee </a> <a class="source" href="psd.html"> psd.coffee </a> <a class="source" href="psdassert.html"> psdassert.coffee </a> <a class="source" href="psdchannelimage.html"> psdchannelimage.coffee </a> <a class="source" href="psdcolor.html"> psdcolor.coffee </a> <a class="source" href="psddescriptor.html"> psddescriptor.coffee </a> <a class="source" href="psdfile.html"> psdfile.coffee </a> <a class="source" href="psdheader.html"> psdheader.coffee </a> <a class="source" href="psdimage.html"> psdimage.coffee </a> <a class="source" href="psdlayer.html"> psdlayer.coffee </a> <a class="source" href="psdlayermask.html"> psdlayermask.coffee </a> <a class="source" href="psdresource.html"> psdresource.coffee </a> <a class="source" href="util.html"> util.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> psdlayer.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> </td> <td class="code"> <div class="highlight"><pre><span class="k">class</span> <span class="nx">PSDLayer</span>
<span class="nv">CHANNEL_SUFFIXES =</span>
<span class="s1">'-2'</span><span class="o">:</span> <span class="s1">'layer mask'</span>
<span class="s1">'-1'</span><span class="o">:</span> <span class="s1">'A'</span>
<span class="mi">0</span><span class="o">:</span> <span class="s1">'R'</span>
<span class="mi">1</span><span class="o">:</span> <span class="s1">'G'</span>
<span class="mi">2</span><span class="o">:</span> <span class="s1">'B'</span>
<span class="mi">3</span><span class="o">:</span> <span class="s1">'RGB'</span>
<span class="mi">4</span><span class="o">:</span> <span class="s1">'CMYK'</span>
<span class="mi">5</span><span class="o">:</span> <span class="s1">'HSL'</span>
<span class="mi">6</span><span class="o">:</span> <span class="s1">'HSB'</span>
<span class="mi">9</span><span class="o">:</span> <span class="s1">'Lab'</span>
<span class="mi">11</span><span class="o">:</span> <span class="s1">'RGB'</span>
<span class="mi">12</span><span class="o">:</span> <span class="s1">'Lab'</span>
<span class="mi">13</span><span class="o">:</span> <span class="s1">'CMYK'</span>
<span class="nv">SECTION_DIVIDER_TYPES =</span>
<span class="mi">0</span><span class="o">:</span> <span class="s2">"other"</span>
<span class="mi">1</span><span class="o">:</span> <span class="s2">"open folder"</span>
<span class="mi">2</span><span class="o">:</span> <span class="s2">"closed folder"</span>
<span class="mi">3</span><span class="o">:</span> <span class="s2">"bounding section divider"</span> <span class="c1"># hidden in the UI</span>
<span class="nv">BLEND_MODES =</span>
<span class="s2">"norm"</span><span class="o">:</span> <span class="s2">"normal"</span>
<span class="s2">"dark"</span><span class="o">:</span> <span class="s2">"darken"</span>
<span class="s2">"lite"</span><span class="o">:</span> <span class="s2">"lighten"</span>
<span class="s2">"hue"</span><span class="o">:</span> <span class="s2">"hue"</span>
<span class="s2">"sat"</span><span class="o">:</span> <span class="s2">"saturation"</span>
<span class="s2">"colr"</span><span class="o">:</span> <span class="s2">"color"</span>
<span class="s2">"lum"</span><span class="o">:</span> <span class="s2">"luminosity"</span>
<span class="s2">"mul"</span><span class="o">:</span> <span class="s2">"multiply"</span>
<span class="s2">"scrn"</span><span class="o">:</span> <span class="s2">"screen"</span>
<span class="s2">"diss"</span><span class="o">:</span> <span class="s2">"dissolve"</span>
<span class="s2">"over"</span><span class="o">:</span> <span class="s2">"overlay"</span>
<span class="s2">"hLit"</span><span class="o">:</span> <span class="s2">"hard light"</span>
<span class="s2">"sLit"</span><span class="o">:</span> <span class="s2">"soft light"</span>
<span class="s2">"diff"</span><span class="o">:</span> <span class="s2">"difference"</span>
<span class="s2">"smud"</span><span class="o">:</span> <span class="s2">"exclusion"</span>
<span class="s2">"div"</span><span class="o">:</span> <span class="s2">"color dodge"</span>
<span class="s2">"idiv"</span><span class="o">:</span> <span class="s2">"color burn"</span>
<span class="s2">"lbrn"</span><span class="o">:</span> <span class="s2">"linear burn"</span>
<span class="s2">"lddg"</span><span class="o">:</span> <span class="s2">"linear dodge"</span>
<span class="s2">"vLit"</span><span class="o">:</span> <span class="s2">"vivid light"</span>
<span class="s2">"lLit"</span><span class="o">:</span> <span class="s2">"linear light"</span>
<span class="s2">"pLit"</span><span class="o">:</span> <span class="s2">"pin light"</span>
<span class="s2">"hMix"</span><span class="o">:</span> <span class="s2">"hard mix"</span>
<span class="nv">BLEND_FLAGS =</span>
<span class="mi">0</span><span class="o">:</span> <span class="s2">"transparency protected"</span>
<span class="mi">1</span><span class="o">:</span> <span class="s2">"visible"</span>
<span class="mi">2</span><span class="o">:</span> <span class="s2">"obsolete"</span>
<span class="mi">3</span><span class="o">:</span> <span class="s2">"bit 4 useful"</span>
<span class="mi">4</span><span class="o">:</span> <span class="s2">"pixel data irrelevant"</span>
<span class="nv">MASK_FLAGS =</span>
<span class="mi">0</span><span class="o">:</span> <span class="s2">"position relative"</span>
<span class="mi">1</span><span class="o">:</span> <span class="s2">"layer mask disabled"</span>
<span class="mi">2</span><span class="o">:</span> <span class="s2">"invert layer mask"</span>
<span class="nv">SAFE_FONTS = </span><span class="p">[</span>
<span class="s2">"Arial"</span>
<span class="s2">"Courier New"</span>
<span class="s2">"Georgia"</span>
<span class="s2">"Times New Roman"</span>
<span class="s2">"Verdana"</span>
<span class="s2">"Trebuchet MS"</span>
<span class="s2">"Lucida Sans"</span>
<span class="s2">"Tahoma"</span>
<span class="p">]</span>
<span class="nv">constructor: </span><span class="nf">(@file, @header = null) -></span>
<span class="vi">@image = </span><span class="kc">null</span>
<span class="vi">@mask = </span><span class="p">{}</span>
<span class="vi">@blendingRanges = </span><span class="p">{}</span>
<span class="vi">@adjustments = </span><span class="p">{}</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>Defaults</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@layerType = </span><span class="s2">"normal"</span>
<span class="vi">@blendingMode = </span><span class="s2">"normal"</span>
<span class="vi">@opacity = </span><span class="mi">255</span>
<span class="vi">@fillOpacity = </span><span class="mi">255</span>
<span class="vi">@isFolder = </span><span class="kc">false</span>
<span class="vi">@isHidden = </span><span class="kc">false</span>
<span class="nv">parse: </span><span class="nf">(layerIndex = null) -></span>
<span class="nx">@parseInfo</span><span class="p">(</span><span class="nx">layerIndex</span><span class="p">)</span>
<span class="nx">@parseBlendModes</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>Length of the rest of the layer data</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">extralen = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="vi">@layerEnd = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span> <span class="o">+</span> <span class="nx">extralen</span>
<span class="nx">assert</span> <span class="nx">extralen</span> <span class="o">></span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>Marking our start point in case we need to bail and recover</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">extrastart = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span>
<span class="nv">result = </span><span class="nx">@parseMaskData</span><span class="p">()</span>
<span class="k">if</span> <span class="o">not</span> <span class="nx">result</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>Make this more graceful in the future?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Error parsing mask data for layer ##{layerIndex}. Skipping."</span>
<span class="k">return</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="nx">@layerEnd</span><span class="p">,</span> <span class="kc">false</span>
<span class="nx">@parseBlendingRanges</span><span class="p">()</span>
<span class="nx">@parseLegacyLayerName</span><span class="p">()</span>
<span class="nx">@parseExtraData</span><span class="p">()</span>
<span class="vi">@name = </span><span class="nx">@legacyName</span> <span class="nx">unless</span> <span class="nx">@name</span><span class="o">?</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Layer #{layerIndex}:"</span><span class="p">,</span> <span class="err">@</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <p>In case there are filler zeros</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="nx">extrastart</span> <span class="o">+</span> <span class="nx">extralen</span><span class="p">,</span> <span class="kc">false</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <p>Parse important information about this layer such as position, size,
and channel info. Layer Records section.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parseInfo: </span><span class="nf">(layerIndex) -></span>
<span class="vi">@idx = </span><span class="nx">layerIndex</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <h1>#</h1> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Layer</span> <span class="nx">Info</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">¶</a> </div> <h1>#</h1> </td> <td class="code"> <div class="highlight"><pre> <span class="p">[</span><span class="nx">@top</span><span class="p">,</span> <span class="nx">@left</span><span class="p">,</span> <span class="nx">@bottom</span><span class="p">,</span> <span class="nx">@right</span><span class="p">,</span> <span class="nx">@channels</span><span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">iiiih"</span>
<span class="p">[</span><span class="nx">@rows</span><span class="p">,</span> <span class="nx">@cols</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="nx">@bottom</span> <span class="o">-</span> <span class="nx">@top</span><span class="p">,</span> <span class="nx">@right</span> <span class="o">-</span> <span class="nx">@left</span><span class="p">]</span>
<span class="nx">assert</span> <span class="nx">@channels</span> <span class="o">></span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">¶</a> </div> <p>Alias</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@height = </span><span class="nx">@rows</span>
<span class="vi">@width = </span><span class="nx">@cols</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-11">¶</a> </div> <p>Sanity check</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">if</span> <span class="nx">@bottom</span> <span class="o"><</span> <span class="nx">@top</span> <span class="o">or</span> <span class="nx">@right</span> <span class="o"><</span> <span class="nx">@left</span> <span class="o">or</span> <span class="nx">@channels</span> <span class="o">></span> <span class="mi">64</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Somethings not right, attempting to skip layer."</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="mi">6</span> <span class="o">*</span> <span class="nx">@channels</span> <span class="o">+</span> <span class="mi">12</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">skipBlock</span> <span class="s2">"layer info: extra data"</span>
<span class="k">return</span> <span class="c1"># next layer</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-12">¶</a> </div> <p>Read channel info</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@channelsInfo = </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">@channels</span><span class="p">]</span>
<span class="p">[</span><span class="nx">channelID</span><span class="p">,</span> <span class="nx">channelLength</span><span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">hi"</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Channel #{i}: id=#{channelID}, #{channelLength} bytes, type=#{CHANNEL_SUFFIXES[channelID]}"</span>
<span class="nx">@channelsInfo</span><span class="p">.</span><span class="nx">push</span> <span class="nv">id: </span><span class="nx">channelID</span><span class="p">,</span> <span class="nv">length: </span><span class="nx">channelLength</span>
</pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-13">¶</a> </div> <p>Parse the blend mode used for this layer including type and opacity</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parseBlendModes: </span><span class="o">-></span>
<span class="vi">@blendMode = </span><span class="p">{}</span>
<span class="p">[</span>
<span class="nx">@blendMode</span><span class="p">.</span><span class="nx">sig</span><span class="p">,</span> <span class="c1"># 8BIM</span>
<span class="nx">@blendMode</span><span class="p">.</span><span class="nx">key</span><span class="p">,</span> <span class="c1"># blending mode key</span>
<span class="nx">@blendMode</span><span class="p">.</span><span class="nx">opacity</span><span class="p">,</span> <span class="c1"># 0 - 255</span>
<span class="nx">@blendMode</span><span class="p">.</span><span class="nx">clipping</span><span class="p">,</span> <span class="c1"># 0 = base, 1 = non-base</span>
<span class="nx">flags</span><span class="p">,</span>
<span class="nx">filler</span> <span class="c1"># unused data</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">4s4sBBBB"</span>
<span class="nx">assert</span> <span class="nx">@blendMode</span><span class="p">.</span><span class="nx">sig</span> <span class="o">is</span> <span class="s2">"8BIM"</span>
<span class="vi">@blendMode.key = </span><span class="nx">@blendMode</span><span class="p">.</span><span class="nx">key</span><span class="p">.</span><span class="nx">trim</span><span class="p">()</span>
<span class="vi">@blendMode.opacityPercentage = </span><span class="p">(</span><span class="nx">@blendMode</span><span class="p">.</span><span class="nx">opacity</span> <span class="o">*</span> <span class="mi">100</span><span class="p">)</span> <span class="o">/</span> <span class="mi">255</span>
<span class="vi">@blendMode.blender = </span><span class="nx">BLEND_MODES</span><span class="p">[</span><span class="nx">@blendMode</span><span class="p">.</span><span class="nx">key</span><span class="p">]</span>
<span class="vi">@blendMode.transparencyProtected = </span><span class="nx">flags</span> <span class="o">&</span> <span class="mh">0x01</span>
<span class="vi">@blendMode.visible = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">1</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span>
<span class="vi">@blendMode.visible = </span><span class="mi">1</span> <span class="o">-</span> <span class="nx">@blendMode</span><span class="p">.</span><span class="nx">visible</span>
<span class="vi">@blendMode.obsolete = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">2</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span>
</pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-14">¶</a> </div> <p>PS >= 5.0; tells if bit 4 has useful info</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">if</span> <span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">3</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span>
<span class="vi">@blendMode.pixelDataIrrelevant = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">4</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span>
<span class="vi">@blendingMode = </span><span class="nx">@blendMode</span><span class="p">.</span><span class="nx">blender</span>
<span class="vi">@opacity = </span><span class="nx">@blendMode</span><span class="p">.</span><span class="nx">opacity</span>
<span class="vi">@visible = </span><span class="nx">@blendMode</span><span class="p">.</span><span class="nx">visible</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Blending mode:"</span><span class="p">,</span> <span class="nx">@blendMode</span>
<span class="nv">parseMaskData: </span><span class="o">-></span>
<span class="vi">@mask.size = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-15">¶</a> </div> <p>Something wrong, bail.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">assert</span> <span class="nx">@mask</span><span class="p">.</span><span class="nx">size</span> <span class="k">in</span> <span class="p">[</span><span class="mi">36</span><span class="p">,</span> <span class="mi">20</span><span class="p">,</span> <span class="mi">0</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-16">¶</a> </div> <p>Valid, but this section doesn't exist.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="nx">@mask</span><span class="p">.</span><span class="nx">size</span> <span class="o">is</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-17">¶</a> </div> <p>Parse mask position</p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">[</span>
<span class="nx">@mask</span><span class="p">.</span><span class="nx">top</span><span class="p">,</span>
<span class="nx">@mask</span><span class="p">.</span><span class="nx">left</span><span class="p">,</span>
<span class="nx">@mask</span><span class="p">.</span><span class="nx">bottom</span><span class="p">,</span>
<span class="nx">@mask</span><span class="p">.</span><span class="nx">right</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-18">¶</a> </div> <p>Either 0 or 255</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@mask</span><span class="p">.</span><span class="nx">defaultColor</span><span class="p">,</span>
<span class="nx">flags</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">llllBB"</span>
<span class="nx">assert</span> <span class="nx">@mask</span><span class="p">.</span><span class="nx">defaultColor</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">,</span> <span class="mi">255</span><span class="p">]</span>
<span class="vi">@mask.width = </span><span class="nx">@mask</span><span class="p">.</span><span class="nx">right</span> <span class="o">-</span> <span class="nx">@mask</span><span class="p">.</span><span class="nx">left</span>
<span class="vi">@mask.height = </span><span class="nx">@mask</span><span class="p">.</span><span class="nx">bottom</span> <span class="o">-</span> <span class="nx">@mask</span><span class="p">.</span><span class="nx">top</span>
<span class="vi">@mask.relative = </span><span class="nx">flags</span> <span class="o">&</span> <span class="mh">0x01</span>
<span class="vi">@mask.disabled = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">1</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span>
<span class="vi">@mask.invert = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">2</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-19">¶</a> </div> <p>If the size is 20, then there are 2 bytes of padding</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">if</span> <span class="nx">@mask</span><span class="p">.</span><span class="nx">size</span> <span class="o">is</span> <span class="mi">20</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
<span class="k">else</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-20">¶</a> </div> <p>This is weird.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">[</span>
<span class="nx">flags</span><span class="p">,</span>
<span class="nx">@mask</span><span class="p">.</span><span class="nx">defaultColor</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">BB"</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-21">¶</a> </div> <p>Real flags. Same as above. Seriously, who designed this crap?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@mask.relative = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="mh">0x01</span><span class="p">)</span>
<span class="vi">@mask.disabled = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">1</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span>
<span class="vi">@mask.invert = </span><span class="p">(</span><span class="nx">flags</span> <span class="o">&</span> <span class="p">(</span><span class="mh">0x01</span> <span class="o"><<</span> <span class="mi">2</span><span class="p">))</span> <span class="o">></span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-22">¶</a> </div> <p>For some reason the mask position info is duplicated here? Skip. Ugh.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="mi">16</span>
<span class="kc">true</span>
<span class="nv">parseBlendingRanges: </span><span class="o">-></span>
<span class="nv">length = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-23">¶</a> </div> <p>First, the grey blend. This is irrelevant for Lab & Greyscale.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@blendingRanges.grey =</span>
<span class="nv">source:</span>
<span class="nv">black: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">white: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">dest:</span>
<span class="nv">black: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">white: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">pos = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span>
<span class="vi">@blendingRanges.numChannels = </span><span class="p">(</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">8</span><span class="p">)</span> <span class="o">/</span> <span class="mi">8</span>
<span class="nx">assert</span> <span class="nx">@blendingRanges</span><span class="p">.</span><span class="nx">numChannels</span> <span class="o">></span> <span class="mi">0</span>
<span class="vi">@blendingRanges.channels = </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">@blendingRanges</span><span class="p">.</span><span class="nx">numChannels</span><span class="p">]</span>
<span class="nx">@blendingRanges</span><span class="p">.</span><span class="nx">channels</span><span class="p">.</span><span class="nx">push</span>
<span class="nv">source: </span>
<span class="nv">black: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">white: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">dest: </span>
<span class="nv">black: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span>
<span class="nv">white: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readShortInt</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-24">¶</a> </div> <p>Parse the name of this layer. This is considered the "legacy"
name because it is encoded with MacRoman encoding. PS >= 5.0
includes a unicode version of the name, which is in the additional
layer information section.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parseLegacyLayerName: </span><span class="o">-></span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-25">¶</a> </div> <p>Name length is padded in multiples of 4</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">namelen = </span><span class="nx">Util</span><span class="p">.</span><span class="nx">pad4</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">read</span><span class="p">(</span><span class="mi">1</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
<span class="vi">@legacyName = </span><span class="nx">Util</span><span class="p">.</span><span class="nx">decodeMacroman</span><span class="p">(</span><span class="nx">@file</span><span class="p">.</span><span class="nx">read</span><span class="p">(</span><span class="nx">namelen</span><span class="p">)).</span><span class="nx">replace</span> <span class="sr">/\u0000/g</span><span class="p">,</span> <span class="s1">''</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Layer name: #{@name}"</span>
<span class="nv">parseExtraData: </span><span class="o">-></span>
<span class="k">while</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span> <span class="o"><</span> <span class="nx">@layerEnd</span>
<span class="p">[</span>
<span class="nx">signature</span><span class="p">,</span>
<span class="nx">key</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">4s4s"</span>
<span class="nx">assert</span><span class="p">.</span><span class="nx">equal</span> <span class="nx">signature</span><span class="p">,</span> <span class="s2">"8BIM"</span>
<span class="nv">length = </span><span class="nx">Util</span><span class="p">.</span><span class="nx">pad2</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">pos = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-26">¶</a> </div> <p>TODO: many more adjustment layers to implement</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span><span class="p">(</span><span class="s2">"Extra layer info: key = #{key}, length = #{length}"</span><span class="p">)</span>
<span class="k">switch</span> <span class="nx">key</span>
<span class="k">when</span> <span class="s2">"levl"</span>
<span class="vi">@adjustments.levels = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDLevels</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"curv"</span>
<span class="vi">@adjustments.curves = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDCurves</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"brit"</span>
<span class="vi">@adjustments.brightnessContrast = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDBrightnessContrast</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"blnc"</span>
<span class="vi">@adjustments.colorBalance = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDColorBalance</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"hue2"</span>
<span class="vi">@adjustments.hueSaturation = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDHueSaturation</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"selc"</span>
<span class="vi">@adjustments.selectiveColor = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDSelectiveColor</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"thrs"</span>
<span class="vi">@adjustments.threshold = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDThreshold</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"nvrt"</span>
<span class="vi">@adjustments.invert = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDInvert</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"post"</span>
<span class="vi">@adjustments.posterize = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDPosterize</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"tySh"</span> <span class="c1"># PS <= 5</span>
<span class="vi">@adjustments.typeTool = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDTypeTool</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">(</span><span class="kc">true</span><span class="p">)</span>
<span class="k">when</span> <span class="s2">"TySh"</span> <span class="c1"># PS >= 6</span>
<span class="vi">@adjustments.typeTool = </span><span class="p">(</span><span class="k">new</span> <span class="nx">PSDTypeTool</span><span class="p">(</span><span class="err">@</span><span class="p">,</span> <span class="nx">length</span><span class="p">)).</span><span class="nx">parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"luni"</span> <span class="c1"># PS >= 5.0</span>
<span class="vi">@name = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readUnicodeString</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"lyid"</span>
<span class="vi">@layerId = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"lsct"</span>
<span class="nx">@readLayerSectionDivider</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"lrFX"</span>
<span class="nx">@parseEffectsLayer</span><span class="p">();</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">read</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="c1"># why these 2 bytes?</span>
<span class="k">else</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="nx">length</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span><span class="p">(</span><span class="s2">"Skipping additional layer info with key #{key}"</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span> <span class="o">!=</span> <span class="p">(</span><span class="nx">pos</span> <span class="o">+</span> <span class="nx">length</span><span class="p">)</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Error parsing additional layer info with key #{key} - unexpected end"</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="nx">pos</span> <span class="o">+</span> <span class="nx">length</span><span class="p">,</span> <span class="kc">false</span> <span class="c1"># Attempt to recover</span>
<span class="nv">parseEffectsLayer: </span><span class="o">-></span>
<span class="nv">effects = </span><span class="p">[]</span>
<span class="p">[</span>
<span class="nx">v</span><span class="p">,</span> <span class="c1"># always 0</span>
<span class="nx">count</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">HH"</span>
<span class="k">while</span> <span class="nx">count</span><span class="o">--</span> <span class="o">></span> <span class="mi">0</span>
<span class="p">[</span>
<span class="nx">signature</span><span class="p">,</span>
<span class="nx">type</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">4s4s"</span>
<span class="p">[</span><span class="nx">size</span><span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span> <span class="s2">">i"</span>
<span class="nv">pos = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span><span class="p">(</span><span class="s2">"Parsing effect layer with type #{type} and size #{size}"</span><span class="p">)</span>
<span class="nv">effect = </span>
<span class="k">switch</span> <span class="nx">type</span>
<span class="k">when</span> <span class="s2">"cmnS"</span> <span class="k">then</span> <span class="k">new</span> <span class="nx">PSDLayerEffectCommonStateInfo</span> <span class="nx">@file</span>
<span class="k">when</span> <span class="s2">"dsdw"</span> <span class="k">then</span> <span class="k">new</span> <span class="nx">PSDDropDownLayerEffect</span> <span class="nx">@file</span>
<span class="k">when</span> <span class="s2">"isdw"</span> <span class="k">then</span> <span class="k">new</span> <span class="nx">PSDDropDownLayerEffect</span> <span class="nx">@file</span><span class="p">,</span> <span class="kc">true</span> <span class="c1"># inner drop shadow</span>
<span class="nv">data = </span><span class="nx">effect</span><span class="o">?</span><span class="p">.</span><span class="nx">parse</span><span class="p">()</span>
<span class="nv">left = </span><span class="p">(</span><span class="nx">pos</span> <span class="o">+</span> <span class="nx">size</span><span class="p">)</span> <span class="o">-</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">tell</span><span class="p">()</span>
<span class="k">if</span> <span class="nx">left</span> <span class="o">!=</span> <span class="mi">0</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span><span class="p">(</span><span class="s2">"Failed to parse effect layer with type #{type}"</span><span class="p">)</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">seek</span> <span class="nx">left</span>
<span class="k">else</span>
<span class="nx">effects</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">type</span> <span class="o">==</span> <span class="s2">"cmnS"</span> <span class="c1"># ignore commons state info</span>
<span class="vi">@adjustments.effects = </span><span class="nx">effects</span>
<span class="nv">readLayerSectionDivider: </span><span class="o">-></span>
<span class="nv">code = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="vi">@layerType = </span><span class="nx">SECTION_DIVIDER_TYPES</span><span class="p">[</span><span class="nx">code</span><span class="p">]</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Layer type:"</span><span class="p">,</span> <span class="nx">@layerType</span>
<span class="k">switch</span> <span class="nx">code</span>
<span class="k">when</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">2</span> <span class="k">then</span> <span class="vi">@isFolder = </span><span class="kc">true</span>
<span class="k">when</span> <span class="mi">3</span> <span class="k">then</span> <span class="vi">@isHidden = </span><span class="kc">true</span>
<span class="nv">toJSON: </span><span class="o">-></span>
<span class="nv">sections = </span><span class="p">[</span>
<span class="s1">'name'</span>
<span class="s1">'top'</span>
<span class="s1">'left'</span>
<span class="s1">'bottom'</span>
<span class="s1">'right'</span>
<span class="s1">'channels'</span>
<span class="s1">'rows'</span>
<span class="s1">'cols'</span>
<span class="s1">'channelsInfo'</span>
<span class="s1">'mask'</span>
<span class="s1">'layerType'</span>
<span class="s1">'blendMode'</span>
<span class="s1">'adjustments'</span>
<span class="s1">'visible'</span>
<span class="p">]</span>
<span class="nv">data = </span><span class="p">{}</span>
<span class="k">for</span> <span class="nx">section</span> <span class="k">in</span> <span class="nx">sections</span>
<span class="nx">data</span><span class="p">[</span><span class="nx">section</span><span class="p">]</span> <span class="o">=</span> <span class="err">@</span><span class="p">[</span><span class="nx">section</span><span class="p">]</span>
<span class="nx">data</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>
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