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<h1>Source code for pyqtgraph</h1><div class="highlight"><pre>
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<span class="c"># -*- coding: utf-8 -*-</span>
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<span class="c">### import all the goodies and add some helper functions for easy CLI use</span>
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<span class="c">## 'Qt' is a local module; it is intended mainly to cover up the differences</span>
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<span class="c">## between PyQt4 and PySide.</span>
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<span class="kn">from</span> <span class="nn">Qt</span> <span class="kn">import</span> <span class="n">QtGui</span>
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<span class="n">CONFIG_OPTIONS</span> <span class="o">=</span> <span class="p">{</span>
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<span class="s">'leftButtonPan'</span><span class="p">:</span> <span class="bp">True</span>
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<span class="p">}</span>
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<span class="k">def</span> <span class="nf">setConfigOption</span><span class="p">(</span><span class="n">opt</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
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<span class="n">CONFIG_OPTIONS</span><span class="p">[</span><span class="n">opt</span><span class="p">]</span> <span class="o">=</span> <span class="n">value</span>
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<span class="k">def</span> <span class="nf">getConfigOption</span><span class="p">(</span><span class="n">opt</span><span class="p">):</span>
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<span class="k">return</span> <span class="n">CONFIG_OPTIONS</span><span class="p">[</span><span class="n">opt</span><span class="p">]</span>
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<span class="c">## Import almost everything to make it available from a single namespace</span>
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<span class="c">## don't import the more complex systems--canvas, parametertree, flowchart, dockarea</span>
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<span class="c">## these must be imported separately.</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="k">def</span> <span class="nf">importAll</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
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<span class="n">d</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="n">__file__</span><span class="p">)[</span><span class="mi">0</span><span class="p">],</span> <span class="n">path</span><span class="p">)</span>
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<span class="n">files</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> <span class="n">os</span><span class="o">.</span><span class="n">listdir</span><span class="p">(</span><span class="n">d</span><span class="p">):</span>
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<span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">f</span><span class="p">)):</span>
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<span class="n">files</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">f</span><span class="p">)</span>
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<span class="k">elif</span> <span class="n">f</span><span class="p">[</span><span class="o">-</span><span class="mi">3</span><span class="p">:]</span> <span class="o">==</span> <span class="s">'.py'</span> <span class="ow">and</span> <span class="n">f</span> <span class="o">!=</span> <span class="s">'__init__.py'</span><span class="p">:</span>
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<span class="n">files</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">f</span><span class="p">[:</span><span class="o">-</span><span class="mi">3</span><span class="p">])</span>
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<span class="k">for</span> <span class="n">modName</span> <span class="ow">in</span> <span class="n">files</span><span class="p">:</span>
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<span class="n">mod</span> <span class="o">=</span> <span class="nb">__import__</span><span class="p">(</span><span class="n">path</span><span class="o">+</span><span class="s">"."</span><span class="o">+</span><span class="n">modName</span><span class="p">,</span> <span class="nb">globals</span><span class="p">(),</span> <span class="nb">locals</span><span class="p">(),</span> <span class="n">fromlist</span><span class="o">=</span><span class="p">[</span><span class="s">'*'</span><span class="p">])</span>
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<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">mod</span><span class="p">,</span> <span class="s">'__all__'</span><span class="p">):</span>
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<span class="n">names</span> <span class="o">=</span> <span class="n">mod</span><span class="o">.</span><span class="n">__all__</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="n">names</span> <span class="o">=</span> <span class="p">[</span><span class="n">n</span> <span class="k">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="nb">dir</span><span class="p">(</span><span class="n">mod</span><span class="p">)</span> <span class="k">if</span> <span class="n">n</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="s">'_'</span><span class="p">]</span>
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<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">names</span><span class="p">:</span>
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<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">mod</span><span class="p">,</span> <span class="n">k</span><span class="p">):</span>
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<span class="nb">globals</span><span class="p">()[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">mod</span><span class="p">,</span> <span class="n">k</span><span class="p">)</span>
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<span class="n">importAll</span><span class="p">(</span><span class="s">'graphicsItems'</span><span class="p">)</span>
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<span class="n">importAll</span><span class="p">(</span><span class="s">'widgets'</span><span class="p">)</span>
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<span class="kn">from</span> <span class="nn">imageview</span> <span class="kn">import</span> <span class="o">*</span>
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<span class="kn">from</span> <span class="nn">WidgetGroup</span> <span class="kn">import</span> <span class="o">*</span>
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<span class="kn">from</span> <span class="nn">Point</span> <span class="kn">import</span> <span class="n">Point</span>
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<span class="kn">from</span> <span class="nn">Transform</span> <span class="kn">import</span> <span class="n">Transform</span>
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<span class="kn">from</span> <span class="nn">functions</span> <span class="kn">import</span> <span class="o">*</span>
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<span class="kn">from</span> <span class="nn">graphicsWindows</span> <span class="kn">import</span> <span class="o">*</span>
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<span class="kn">from</span> <span class="nn">SignalProxy</span> <span class="kn">import</span> <span class="o">*</span>
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<span class="c">## Convenience functions for command-line use</span>
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<span class="n">plots</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="n">images</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="n">QAPP</span> <span class="o">=</span> <span class="bp">None</span>
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<div class="viewcode-block" id="plot"><a class="viewcode-back" href="../functions.html#pyqtgraph.plot">[docs]</a><span class="k">def</span> <span class="nf">plot</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kargs</span><span class="p">):</span>
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<span class="sd">"""</span>
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<span class="sd"> | Create and return a PlotWindow (this is just a window with PlotWidget inside), plot data in it.</span>
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<span class="sd"> | Accepts a *title* argument to set the title of the window.</span>
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<span class="sd"> | All other arguments are used to plot data. (see :func:`PlotItem.plot() <pyqtgraph.PlotItem.plot>`)</span>
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<span class="sd"> """</span>
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<span class="n">mkQApp</span><span class="p">()</span>
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<span class="k">if</span> <span class="s">'title'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
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<span class="n">w</span> <span class="o">=</span> <span class="n">PlotWindow</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="n">kargs</span><span class="p">[</span><span class="s">'title'</span><span class="p">])</span>
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<span class="k">del</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'title'</span><span class="p">]</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="n">w</span> <span class="o">=</span> <span class="n">PlotWindow</span><span class="p">()</span>
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<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span><span class="o">+</span><span class="nb">len</span><span class="p">(</span><span class="n">kargs</span><span class="p">)</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span>
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<span class="n">w</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kargs</span><span class="p">)</span>
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<span class="n">plots</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">w</span><span class="p">)</span>
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<span class="n">w</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
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<span class="k">return</span> <span class="n">w</span>
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</div>
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<div class="viewcode-block" id="image"><a class="viewcode-back" href="../functions.html#pyqtgraph.image">[docs]</a><span class="k">def</span> <span class="nf">image</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kargs</span><span class="p">):</span>
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<span class="sd">"""</span>
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<span class="sd"> | Create and return an ImageWindow (this is just a window with ImageView widget inside), show image data inside.</span>
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<span class="sd"> | Will show 2D or 3D image data.</span>
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<span class="sd"> | Accepts a *title* argument to set the title of the window.</span>
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<span class="sd"> | All other arguments are used to show data. (see :func:`ImageView.setImage() <pyqtgraph.ImageView.setImage>`)</span>
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<span class="sd"> """</span>
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<span class="n">mkQApp</span><span class="p">()</span>
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<span class="n">w</span> <span class="o">=</span> <span class="n">ImageWindow</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kargs</span><span class="p">)</span>
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<span class="n">images</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">w</span><span class="p">)</span>
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<span class="n">w</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
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<span class="k">return</span> <span class="n">w</span></div>
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<span class="n">show</span> <span class="o">=</span> <span class="n">image</span> <span class="c">## for backward compatibility</span>
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<span class="k">def</span> <span class="nf">mkQApp</span><span class="p">():</span>
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<span class="k">if</span> <span class="n">QtGui</span><span class="o">.</span><span class="n">QApplication</span><span class="o">.</span><span class="n">instance</span><span class="p">()</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
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<span class="k">global</span> <span class="n">QAPP</span>
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<span class="n">QAPP</span> <span class="o">=</span> <span class="n">QtGui</span><span class="o">.</span><span class="n">QApplication</span><span class="p">([])</span>
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