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<h1>Source code for PIL.MicImagePlugin</h1><div class="highlight"><pre>
<span></span><span class="c1">#</span>
<span class="c1"># The Python Imaging Library.</span>
<span class="c1"># $Id$</span>
<span class="c1">#</span>
<span class="c1"># Microsoft Image Composer support for PIL</span>
<span class="c1">#</span>
<span class="c1"># Notes:</span>
<span class="c1"># uses TiffImagePlugin.py to read the actual image streams</span>
<span class="c1">#</span>
<span class="c1"># History:</span>
<span class="c1"># 97-01-20 fl Created</span>
<span class="c1">#</span>
<span class="c1"># Copyright (c) Secret Labs AB 1997.</span>
<span class="c1"># Copyright (c) Fredrik Lundh 1997.</span>
<span class="c1">#</span>
<span class="c1"># See the README file for information on usage and redistribution.</span>
<span class="c1">#</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="k">import</span> <span class="n">Image</span><span class="p">,</span> <span class="n">TiffImagePlugin</span>
<span class="kn">import</span> <span class="nn">olefile</span>
<span class="n">__version__</span> <span class="o">=</span> <span class="s2">"0.1"</span>
<span class="c1">#</span>
<span class="c1"># --------------------------------------------------------------------</span>
<span class="k">def</span> <span class="nf">_accept</span><span class="p">(</span><span class="n">prefix</span><span class="p">):</span>
<span class="k">return</span> <span class="n">prefix</span><span class="p">[:</span><span class="mi">8</span><span class="p">]</span> <span class="o">==</span> <span class="n">olefile</span><span class="o">.</span><span class="n">MAGIC</span>
<span class="c1">##</span>
<span class="c1"># Image plugin for Microsoft's Image Composer file format.</span>
<div class="viewcode-block" id="MicImageFile"><a class="viewcode-back" href="../../reference/plugins.html#PIL.MicImagePlugin.MicImageFile">[docs]</a><span class="k">class</span> <span class="nc">MicImageFile</span><span class="p">(</span><span class="n">TiffImagePlugin</span><span class="o">.</span><span class="n">TiffImageFile</span><span class="p">):</span>
<span class="nb">format</span> <span class="o">=</span> <span class="s2">"MIC"</span>
<span class="n">format_description</span> <span class="o">=</span> <span class="s2">"Microsoft Image Composer"</span>
<span class="n">_close_exclusive_fp_after_loading</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">_open</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># read the OLE directory and see if this is a likely</span>
<span class="c1"># to be a Microsoft Image Composer file</span>
<span class="k">try</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ole</span> <span class="o">=</span> <span class="n">olefile</span><span class="o">.</span><span class="n">OleFileIO</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">IOError</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">SyntaxError</span><span class="p">(</span><span class="s2">"not an MIC file; invalid OLE file"</span><span class="p">)</span>
<span class="c1"># find ACI subfiles with Image members (maybe not the</span>
<span class="c1"># best way to identify MIC files, but what the... ;-)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">images</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">path</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">ole</span><span class="o">.</span><span class="n">listdir</span><span class="p">():</span>
<span class="k">if</span> <span class="n">path</span><span class="p">[</span><span class="mi">1</span><span class="p">:]</span> <span class="ow">and</span> <span class="n">path</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="o">-</span><span class="mi">4</span><span class="p">:]</span> <span class="o">==</span> <span class="s2">".ACI"</span> <span class="ow">and</span> <span class="n">path</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"Image"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="c1"># if we didn't find any images, this is probably not</span>
<span class="c1"># an MIC file.</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">SyntaxError</span><span class="p">(</span><span class="s2">"not an MIC file; no image entries"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">__fp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">fp</span>
<span class="bp">self</span><span class="o">.</span><span class="n">frame</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">category</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">CONTAINER</span>
<span class="bp">self</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">n_frames</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="p">)</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">is_animated</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span>
<div class="viewcode-block" id="MicImageFile.seek"><a class="viewcode-back" href="../../reference/plugins.html#PIL.MicImagePlugin.MicImageFile.seek">[docs]</a> <span class="k">def</span> <span class="nf">seek</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">frame</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_seek_check</span><span class="p">(</span><span class="n">frame</span><span class="p">):</span>
<span class="k">return</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">filename</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="p">[</span><span class="n">frame</span><span class="p">]</span>
<span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">EOFError</span><span class="p">(</span><span class="s2">"no such frame"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ole</span><span class="o">.</span><span class="n">openstream</span><span class="p">(</span><span class="n">filename</span><span class="p">)</span>
<span class="n">TiffImagePlugin</span><span class="o">.</span><span class="n">TiffImageFile</span><span class="o">.</span><span class="n">_open</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">frame</span> <span class="o">=</span> <span class="n">frame</span></div>
<div class="viewcode-block" id="MicImageFile.tell"><a class="viewcode-back" href="../../reference/plugins.html#PIL.MicImagePlugin.MicImageFile.tell">[docs]</a> <span class="k">def</span> <span class="nf">tell</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">frame</span></div></div>
<span class="c1">#</span>
<span class="c1"># --------------------------------------------------------------------</span>
<span class="n">Image</span><span class="o">.</span><span class="n">register_open</span><span class="p">(</span><span class="n">MicImageFile</span><span class="o">.</span><span class="n">format</span><span class="p">,</span> <span class="n">MicImageFile</span><span class="p">,</span> <span class="n">_accept</span><span class="p">)</span>
<span class="n">Image</span><span class="o">.</span><span class="n">register_extension</span><span class="p">(</span><span class="n">MicImageFile</span><span class="o">.</span><span class="n">format</span><span class="p">,</span> <span class="s2">".mic"</span><span class="p">)</span>
</pre></div>
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