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<h1>Source code for pyqtgraph.graphicsItems.PlotCurveItem</h1><div class="highlight"><pre>
<span class="kn">from</span> <span class="nn">..Qt</span> <span class="kn">import</span> <span class="n">QtGui</span><span class="p">,</span> <span class="n">QtCore</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">from</span> <span class="nn">..Qt</span> <span class="kn">import</span> <span class="n">QtOpenGL</span>
<span class="n">HAVE_OPENGL</span> <span class="o">=</span> <span class="bp">True</span>
<span class="k">except</span><span class="p">:</span>
<span class="n">HAVE_OPENGL</span> <span class="o">=</span> <span class="bp">False</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span>
<span class="kn">from</span> <span class="nn">.GraphicsObject</span> <span class="kn">import</span> <span class="n">GraphicsObject</span>
<span class="kn">from</span> <span class="nn">..</span> <span class="kn">import</span> <span class="n">functions</span> <span class="k">as</span> <span class="n">fn</span>
<span class="kn">from</span> <span class="nn">..Point</span> <span class="kn">import</span> <span class="n">Point</span>
<span class="kn">import</span> <span class="nn">struct</span><span class="o">,</span> <span class="nn">sys</span>
<span class="kn">from</span> <span class="nn">..</span> <span class="kn">import</span> <span class="n">getConfigOption</span>
<span class="kn">from</span> <span class="nn">..</span> <span class="kn">import</span> <span class="n">debug</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s">'PlotCurveItem'</span><span class="p">]</span>
<div class="viewcode-block" id="PlotCurveItem"><a class="viewcode-back" href="../../../graphicsItems/plotcurveitem.html#pyqtgraph.PlotCurveItem">[docs]</a><span class="k">class</span> <span class="nc">PlotCurveItem</span><span class="p">(</span><span class="n">GraphicsObject</span><span class="p">):</span></div>
<span class="sd">"""</span>
<span class="sd"> Class representing a single plot curve. Instances of this class are created</span>
<span class="sd"> automatically as part of PlotDataItem; these rarely need to be instantiated</span>
<span class="sd"> directly.</span>
<span class="sd"> </span>
<span class="sd"> Features:</span>
<span class="sd"> </span>
<span class="sd"> - Fast data update</span>
<span class="sd"> - Fill under curve</span>
<span class="sd"> - Mouse interaction</span>
<span class="sd"> </span>
<span class="sd"> ==================== ===============================================</span>
<span class="sd"> **Signals:**</span>
<span class="sd"> sigPlotChanged(self) Emitted when the data being plotted has changed</span>
<span class="sd"> sigClicked(self) Emitted when the curve is clicked</span>
<span class="sd"> ==================== ===============================================</span>
<span class="sd"> """</span>
<span class="n">sigPlotChanged</span> <span class="o">=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">Signal</span><span class="p">(</span><span class="nb">object</span><span class="p">)</span>
<span class="n">sigClicked</span> <span class="o">=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">Signal</span><span class="p">(</span><span class="nb">object</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</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>
<span class="sd">"""</span>
<span class="sd"> Forwards all arguments to :func:`setData <pyqtgraph.PlotCurveItem.setData>`.</span>
<span class="sd"> </span>
<span class="sd"> Some extra arguments are accepted as well:</span>
<span class="sd"> </span>
<span class="sd"> ============== =======================================================</span>
<span class="sd"> **Arguments:**</span>
<span class="sd"> parent The parent GraphicsObject (optional)</span>
<span class="sd"> clickable If True, the item will emit sigClicked when it is </span>
<span class="sd"> clicked on. Defaults to False.</span>
<span class="sd"> ============== =======================================================</span>
<span class="sd"> """</span>
<span class="n">GraphicsObject</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">kargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'parent'</span><span class="p">,</span> <span class="bp">None</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="c">## this is disastrous for performance.</span>
<span class="c">#self.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">metaData</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span> <span class="o">=</span> <span class="p">{</span>
<span class="s">'pen'</span><span class="p">:</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkPen</span><span class="p">(</span><span class="s">'w'</span><span class="p">),</span>
<span class="s">'shadowPen'</span><span class="p">:</span> <span class="bp">None</span><span class="p">,</span>
<span class="s">'fillLevel'</span><span class="p">:</span> <span class="bp">None</span><span class="p">,</span>
<span class="s">'brush'</span><span class="p">:</span> <span class="bp">None</span><span class="p">,</span>
<span class="s">'stepMode'</span><span class="p">:</span> <span class="bp">False</span><span class="p">,</span>
<span class="s">'name'</span><span class="p">:</span> <span class="bp">None</span><span class="p">,</span>
<span class="s">'antialias'</span><span class="p">:</span> <span class="n">getConfigOption</span><span class="p">(</span><span class="s">'antialias'</span><span class="p">),</span>
<span class="s">'connect'</span><span class="p">:</span> <span class="s">'all'</span><span class="p">,</span>
<span class="s">'mouseWidth'</span><span class="p">:</span> <span class="mi">8</span><span class="p">,</span> <span class="c"># width of shape responding to mouse click</span>
<span class="p">}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setClickable</span><span class="p">(</span><span class="n">kargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'clickable'</span><span class="p">,</span> <span class="bp">False</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setData</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>
<span class="k">def</span> <span class="nf">implements</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">interface</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="n">ints</span> <span class="o">=</span> <span class="p">[</span><span class="s">'plotData'</span><span class="p">]</span>
<span class="k">if</span> <span class="n">interface</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">ints</span>
<span class="k">return</span> <span class="n">interface</span> <span class="ow">in</span> <span class="n">ints</span>
<span class="k">def</span> <span class="nf">name</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">opts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'name'</span><span class="p">,</span> <span class="bp">None</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">setClickable</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">s</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="sd">"""Sets whether the item responds to mouse clicks.</span>
<span class="sd"> </span>
<span class="sd"> The *width* argument specifies the width in pixels orthogonal to the</span>
<span class="sd"> curve that will respond to a mouse click.</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">clickable</span> <span class="o">=</span> <span class="n">s</span>
<span class="k">if</span> <span class="n">width</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'mouseWidth'</span><span class="p">]</span> <span class="o">=</span> <span class="n">width</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_boundingRect</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">def</span> <span class="nf">getData</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">xData</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">yData</span>
<span class="k">def</span> <span class="nf">dataBounds</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ax</span><span class="p">,</span> <span class="n">frac</span><span class="o">=</span><span class="mf">1.0</span><span class="p">,</span> <span class="n">orthoRange</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="c">## Need this to run as fast as possible.</span>
<span class="c">## check cache first:</span>
<span class="n">cache</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_boundsCache</span><span class="p">[</span><span class="n">ax</span><span class="p">]</span>
<span class="k">if</span> <span class="n">cache</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span> <span class="ow">and</span> <span class="n">cache</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="p">(</span><span class="n">frac</span><span class="p">,</span> <span class="n">orthoRange</span><span class="p">):</span>
<span class="k">return</span> <span class="n">cache</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getData</span><span class="p">()</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="bp">None</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="p">(</span><span class="bp">None</span><span class="p">,</span> <span class="bp">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">ax</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">x</span>
<span class="n">d2</span> <span class="o">=</span> <span class="n">y</span>
<span class="k">elif</span> <span class="n">ax</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">y</span>
<span class="n">d2</span> <span class="o">=</span> <span class="n">x</span>
<span class="c">## If an orthogonal range is specified, mask the data now</span>
<span class="k">if</span> <span class="n">orthoRange</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">mask</span> <span class="o">=</span> <span class="p">(</span><span class="n">d2</span> <span class="o">>=</span> <span class="n">orthoRange</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">*</span> <span class="p">(</span><span class="n">d2</span> <span class="o"><=</span> <span class="n">orthoRange</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">d</span><span class="p">[</span><span class="n">mask</span><span class="p">]</span>
<span class="c">#d2 = d2[mask]</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">d</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="p">(</span><span class="bp">None</span><span class="p">,</span> <span class="bp">None</span><span class="p">)</span>
<span class="c">## Get min/max (or percentiles) of the requested data range</span>
<span class="k">if</span> <span class="n">frac</span> <span class="o">>=</span> <span class="mf">1.0</span><span class="p">:</span>
<span class="n">b</span> <span class="o">=</span> <span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">nanmin</span><span class="p">(</span><span class="n">d</span><span class="p">),</span> <span class="n">np</span><span class="o">.</span><span class="n">nanmax</span><span class="p">(</span><span class="n">d</span><span class="p">))</span>
<span class="k">elif</span> <span class="n">frac</span> <span class="o"><=</span> <span class="mf">0.0</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s">"Value for parameter 'frac' must be > 0. (got </span><span class="si">%s</span><span class="s">)"</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="n">frac</span><span class="p">))</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">mask</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">isfinite</span><span class="p">(</span><span class="n">d</span><span class="p">)</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">d</span><span class="p">[</span><span class="n">mask</span><span class="p">]</span>
<span class="n">b</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">percentile</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="p">[</span><span class="mi">50</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="n">frac</span><span class="p">),</span> <span class="mi">50</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">+</span> <span class="n">frac</span><span class="p">)])</span>
<span class="c">## adjust for fill level</span>
<span class="k">if</span> <span class="n">ax</span> <span class="o">==</span> <span class="mi">1</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">b</span> <span class="o">=</span> <span class="p">(</span><span class="nb">min</span><span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]),</span> <span class="nb">max</span><span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]))</span>
<span class="c">## Add pen width only if it is non-cosmetic.</span>
<span class="n">pen</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'pen'</span><span class="p">]</span>
<span class="n">spen</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'shadowPen'</span><span class="p">]</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">pen</span><span class="o">.</span><span class="n">isCosmetic</span><span class="p">():</span>
<span class="n">b</span> <span class="o">=</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">-</span> <span class="n">pen</span><span class="o">.</span><span class="n">widthF</span><span class="p">()</span><span class="o">*</span><span class="mf">0.7072</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="n">pen</span><span class="o">.</span><span class="n">widthF</span><span class="p">()</span><span class="o">*</span><span class="mf">0.7072</span><span class="p">)</span>
<span class="k">if</span> <span class="n">spen</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">spen</span><span class="o">.</span><span class="n">isCosmetic</span><span class="p">()</span> <span class="ow">and</span> <span class="n">spen</span><span class="o">.</span><span class="n">style</span><span class="p">()</span> <span class="o">!=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">Qt</span><span class="o">.</span><span class="n">NoPen</span><span class="p">:</span>
<span class="n">b</span> <span class="o">=</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">-</span> <span class="n">spen</span><span class="o">.</span><span class="n">widthF</span><span class="p">()</span><span class="o">*</span><span class="mf">0.7072</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="n">spen</span><span class="o">.</span><span class="n">widthF</span><span class="p">()</span><span class="o">*</span><span class="mf">0.7072</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_boundsCache</span><span class="p">[</span><span class="n">ax</span><span class="p">]</span> <span class="o">=</span> <span class="p">[(</span><span class="n">frac</span><span class="p">,</span> <span class="n">orthoRange</span><span class="p">),</span> <span class="n">b</span><span class="p">]</span>
<span class="k">return</span> <span class="n">b</span>
<span class="k">def</span> <span class="nf">pixelPadding</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">pen</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'pen'</span><span class="p">]</span>
<span class="n">spen</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'shadowPen'</span><span class="p">]</span>
<span class="n">w</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">if</span> <span class="n">pen</span><span class="o">.</span><span class="n">isCosmetic</span><span class="p">():</span>
<span class="n">w</span> <span class="o">+=</span> <span class="n">pen</span><span class="o">.</span><span class="n">widthF</span><span class="p">()</span><span class="o">*</span><span class="mf">0.7072</span>
<span class="k">if</span> <span class="n">spen</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span> <span class="ow">and</span> <span class="n">spen</span><span class="o">.</span><span class="n">isCosmetic</span><span class="p">()</span> <span class="ow">and</span> <span class="n">spen</span><span class="o">.</span><span class="n">style</span><span class="p">()</span> <span class="o">!=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">Qt</span><span class="o">.</span><span class="n">NoPen</span><span class="p">:</span>
<span class="n">w</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">w</span><span class="p">,</span> <span class="n">spen</span><span class="o">.</span><span class="n">widthF</span><span class="p">()</span><span class="o">*</span><span class="mf">0.7072</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">clickable</span><span class="p">:</span>
<span class="n">w</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">w</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'mouseWidth'</span><span class="p">]</span><span class="o">//</span><span class="mi">2</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">return</span> <span class="n">w</span>
<span class="k">def</span> <span class="nf">boundingRect</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_boundingRect</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="p">(</span><span class="n">xmn</span><span class="p">,</span> <span class="n">xmx</span><span class="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dataBounds</span><span class="p">(</span><span class="n">ax</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
<span class="p">(</span><span class="n">ymn</span><span class="p">,</span> <span class="n">ymx</span><span class="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dataBounds</span><span class="p">(</span><span class="n">ax</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
<span class="k">if</span> <span class="n">xmn</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">QRectF</span><span class="p">()</span>
<span class="n">px</span> <span class="o">=</span> <span class="n">py</span> <span class="o">=</span> <span class="mf">0.0</span>
<span class="n">pxPad</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">pixelPadding</span><span class="p">()</span>
<span class="k">if</span> <span class="n">pxPad</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span>
<span class="c"># determine length of pixel in local x, y directions </span>
<span class="n">px</span><span class="p">,</span> <span class="n">py</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">pixelVectors</span><span class="p">()</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">px</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">if</span> <span class="n">px</span> <span class="ow">is</span> <span class="bp">None</span> <span class="k">else</span> <span class="n">px</span><span class="o">.</span><span class="n">length</span><span class="p">()</span>
<span class="k">except</span> <span class="ne">OverflowError</span><span class="p">:</span>
<span class="n">px</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">py</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">if</span> <span class="n">py</span> <span class="ow">is</span> <span class="bp">None</span> <span class="k">else</span> <span class="n">py</span><span class="o">.</span><span class="n">length</span><span class="p">()</span>
<span class="k">except</span> <span class="ne">OverflowError</span><span class="p">:</span>
<span class="n">py</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c"># return bounds expanded by pixel size</span>
<span class="n">px</span> <span class="o">*=</span> <span class="n">pxPad</span>
<span class="n">py</span> <span class="o">*=</span> <span class="n">pxPad</span>
<span class="c">#px += self._maxSpotWidth * 0.5</span>
<span class="c">#py += self._maxSpotWidth * 0.5</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_boundingRect</span> <span class="o">=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">QRectF</span><span class="p">(</span><span class="n">xmn</span><span class="o">-</span><span class="n">px</span><span class="p">,</span> <span class="n">ymn</span><span class="o">-</span><span class="n">py</span><span class="p">,</span> <span class="p">(</span><span class="mi">2</span><span class="o">*</span><span class="n">px</span><span class="p">)</span><span class="o">+</span><span class="n">xmx</span><span class="o">-</span><span class="n">xmn</span><span class="p">,</span> <span class="p">(</span><span class="mi">2</span><span class="o">*</span><span class="n">py</span><span class="p">)</span><span class="o">+</span><span class="n">ymx</span><span class="o">-</span><span class="n">ymn</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_boundingRect</span>
<span class="k">def</span> <span class="nf">viewTransformChanged</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">invalidateBounds</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">prepareGeometryChange</span><span class="p">()</span>
<span class="c">#def boundingRect(self):</span>
<span class="c">#if self._boundingRect is None:</span>
<span class="c">#(x, y) = self.getData()</span>
<span class="c">#if x is None or y is None or len(x) == 0 or len(y) == 0:</span>
<span class="c">#return QtCore.QRectF()</span>
<span class="c">#if self.opts['shadowPen'] is not None:</span>
<span class="c">#lineWidth = (max(self.opts['pen'].width(), self.opts['shadowPen'].width()) + 1)</span>
<span class="c">#else:</span>
<span class="c">#lineWidth = (self.opts['pen'].width()+1)</span>
<span class="c">#pixels = self.pixelVectors()</span>
<span class="c">#if pixels == (None, None):</span>
<span class="c">#pixels = [Point(0,0), Point(0,0)]</span>
<span class="c">#xmin = x.min()</span>
<span class="c">#xmax = x.max()</span>
<span class="c">#ymin = y.min()</span>
<span class="c">#ymax = y.max()</span>
<span class="c">#if self.opts['fillLevel'] is not None:</span>
<span class="c">#ymin = min(ymin, self.opts['fillLevel'])</span>
<span class="c">#ymax = max(ymax, self.opts['fillLevel'])</span>
<span class="c">#xmin -= pixels[0].x() * lineWidth</span>
<span class="c">#xmax += pixels[0].x() * lineWidth</span>
<span class="c">#ymin -= abs(pixels[1].y()) * lineWidth</span>
<span class="c">#ymax += abs(pixels[1].y()) * lineWidth</span>
<span class="c">#self._boundingRect = QtCore.QRectF(xmin, ymin, xmax-xmin, ymax-ymin)</span>
<span class="c">#return self._boundingRect</span>
<span class="k">def</span> <span class="nf">invalidateBounds</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">_boundingRect</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_boundsCache</span> <span class="o">=</span> <span class="p">[</span><span class="bp">None</span><span class="p">,</span> <span class="bp">None</span><span class="p">]</span>
<span class="k">def</span> <span class="nf">setPen</span><span class="p">(</span><span class="bp">self</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>
<span class="sd">"""Set the pen used to draw the curve."""</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'pen'</span><span class="p">]</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkPen</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>
<span class="bp">self</span><span class="o">.</span><span class="n">invalidateBounds</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">setShadowPen</span><span class="p">(</span><span class="bp">self</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>
<span class="sd">"""Set the shadow pen used to draw behind tyhe primary pen.</span>
<span class="sd"> This pen must have a larger width than the primary </span>
<span class="sd"> pen to be visible.</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'shadowPen'</span><span class="p">]</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkPen</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>
<span class="bp">self</span><span class="o">.</span><span class="n">invalidateBounds</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">setBrush</span><span class="p">(</span><span class="bp">self</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>
<span class="sd">"""Set the brush used when filling the area under the curve"""</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'brush'</span><span class="p">]</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkBrush</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>
<span class="bp">self</span><span class="o">.</span><span class="n">invalidateBounds</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">setFillLevel</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">):</span>
<span class="sd">"""Set the level filled to when filling under the curve"""</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]</span> <span class="o">=</span> <span class="n">level</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">invalidateBounds</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">setData</span><span class="p">(</span><span class="bp">self</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>
<span class="sd">"""</span>
<span class="sd"> ============== ========================================================</span>
<span class="sd"> **Arguments:**</span>
<span class="sd"> x, y (numpy arrays) Data to show </span>
<span class="sd"> pen Pen to use when drawing. Any single argument accepted by</span>
<span class="sd"> :func:`mkPen <pyqtgraph.mkPen>` is allowed.</span>
<span class="sd"> shadowPen Pen for drawing behind the primary pen. Usually this</span>
<span class="sd"> is used to emphasize the curve by providing a </span>
<span class="sd"> high-contrast border. Any single argument accepted by</span>
<span class="sd"> :func:`mkPen <pyqtgraph.mkPen>` is allowed.</span>
<span class="sd"> fillLevel (float or None) Fill the area 'under' the curve to</span>
<span class="sd"> *fillLevel*</span>
<span class="sd"> brush QBrush to use when filling. Any single argument accepted</span>
<span class="sd"> by :func:`mkBrush <pyqtgraph.mkBrush>` is allowed.</span>
<span class="sd"> antialias (bool) Whether to use antialiasing when drawing. This</span>
<span class="sd"> is disabled by default because it decreases performance.</span>
<span class="sd"> stepMode If True, two orthogonal lines are drawn for each sample</span>
<span class="sd"> as steps. This is commonly used when drawing histograms.</span>
<span class="sd"> Note that in this case, len(x) == len(y) + 1</span>
<span class="sd"> connect Argument specifying how vertexes should be connected</span>
<span class="sd"> by line segments. Default is "all", indicating full</span>
<span class="sd"> connection. "pairs" causes only even-numbered segments</span>
<span class="sd"> to be drawn. "finite" causes segments to be omitted if</span>
<span class="sd"> they are attached to nan or inf values. For any other</span>
<span class="sd"> connectivity, specify an array of boolean values.</span>
<span class="sd"> ============== ========================================================</span>
<span class="sd"> </span>
<span class="sd"> If non-keyword arguments are used, they will be interpreted as</span>
<span class="sd"> setData(y) for a single argument and setData(x, y) for two</span>
<span class="sd"> arguments.</span>
<span class="sd"> </span>
<span class="sd"> </span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">updateData</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>
<span class="k">def</span> <span class="nf">updateData</span><span class="p">(</span><span class="bp">self</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>
<span class="n">profiler</span> <span class="o">=</span> <span class="n">debug</span><span class="o">.</span><span class="n">Profiler</span><span class="p">()</span>
<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="mi">1</span><span class="p">:</span>
<span class="n">kargs</span><span class="p">[</span><span class="s">'y'</span><span class="p">]</span> <span class="o">=</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">elif</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="mi">2</span><span class="p">:</span>
<span class="n">kargs</span><span class="p">[</span><span class="s">'x'</span><span class="p">]</span> <span class="o">=</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">kargs</span><span class="p">[</span><span class="s">'y'</span><span class="p">]</span> <span class="o">=</span> <span class="n">args</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="k">if</span> <span class="s">'y'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">kargs</span> <span class="ow">or</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'y'</span><span class="p">]</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">kargs</span><span class="p">[</span><span class="s">'y'</span><span class="p">]</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([])</span>
<span class="k">if</span> <span class="s">'x'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">kargs</span> <span class="ow">or</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'x'</span><span class="p">]</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">kargs</span><span class="p">[</span><span class="s">'x'</span><span class="p">]</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">kargs</span><span class="p">[</span><span class="s">'y'</span><span class="p">]))</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="p">[</span><span class="s">'x'</span><span class="p">,</span> <span class="s">'y'</span><span class="p">]:</span>
<span class="n">data</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="nb">list</span><span class="p">):</span>
<span class="n">data</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
<span class="n">kargs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">data</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">ndarray</span><span class="p">)</span> <span class="ow">or</span> <span class="n">data</span><span class="o">.</span><span class="n">ndim</span> <span class="o">></span> <span class="mi">1</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s">"Plot data must be 1D ndarray."</span><span class="p">)</span>
<span class="k">if</span> <span class="s">'complex'</span> <span class="ow">in</span> <span class="nb">str</span><span class="p">(</span><span class="n">data</span><span class="o">.</span><span class="n">dtype</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s">"Can not plot complex data types."</span><span class="p">)</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">"data checks"</span><span class="p">)</span>
<span class="c">#self.setCacheMode(QtGui.QGraphicsItem.NoCache) ## Disabling and re-enabling the cache works around a bug in Qt 4.6 causing the cached results to display incorrectly</span>
<span class="c">## Test this bug with test_PlotWidget and zoom in on the animated plot</span>
<span class="bp">self</span><span class="o">.</span><span class="n">invalidateBounds</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">prepareGeometryChange</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">informViewBoundsChanged</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">yData</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'y'</span><span class="p">]</span><span class="o">.</span><span class="n">view</span><span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">ndarray</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">xData</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'x'</span><span class="p">]</span><span class="o">.</span><span class="n">view</span><span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">ndarray</span><span class="p">)</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'copy'</span><span class="p">)</span>
<span class="k">if</span> <span class="s">'stepMode'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'stepMode'</span><span class="p">]</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'stepMode'</span><span class="p">]</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'stepMode'</span><span class="p">]</span> <span class="ow">is</span> <span class="bp">True</span><span class="p">:</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">xData</span><span class="p">)</span> <span class="o">!=</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">yData</span><span class="p">)</span><span class="o">+</span><span class="mi">1</span><span class="p">:</span> <span class="c">## allow difference of 1 for step mode plots</span>
<span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s">"len(X) must be len(Y)+1 since stepMode=True (got </span><span class="si">%s</span><span class="s"> and </span><span class="si">%s</span><span class="s">)"</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">xData</span><span class="o">.</span><span class="n">shape</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">yData</span><span class="o">.</span><span class="n">shape</span><span class="p">))</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">xData</span><span class="o">.</span><span class="n">shape</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">yData</span><span class="o">.</span><span class="n">shape</span><span class="p">:</span> <span class="c">## allow difference of 1 for step mode plots</span>
<span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s">"X and Y arrays must be the same shape--got </span><span class="si">%s</span><span class="s"> and </span><span class="si">%s</span><span class="s">."</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">xData</span><span class="o">.</span><span class="n">shape</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">yData</span><span class="o">.</span><span class="n">shape</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">path</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span> <span class="o">=</span> <span class="bp">None</span>
<span class="c">#self.xDisp = self.yDisp = None</span>
<span class="k">if</span> <span class="s">'name'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'name'</span><span class="p">]</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'name'</span><span class="p">]</span>
<span class="k">if</span> <span class="s">'connect'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'connect'</span><span class="p">]</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'connect'</span><span class="p">]</span>
<span class="k">if</span> <span class="s">'pen'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setPen</span><span class="p">(</span><span class="n">kargs</span><span class="p">[</span><span class="s">'pen'</span><span class="p">])</span>
<span class="k">if</span> <span class="s">'shadowPen'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setShadowPen</span><span class="p">(</span><span class="n">kargs</span><span class="p">[</span><span class="s">'shadowPen'</span><span class="p">])</span>
<span class="k">if</span> <span class="s">'fillLevel'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setFillLevel</span><span class="p">(</span><span class="n">kargs</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">])</span>
<span class="k">if</span> <span class="s">'brush'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setBrush</span><span class="p">(</span><span class="n">kargs</span><span class="p">[</span><span class="s">'brush'</span><span class="p">])</span>
<span class="k">if</span> <span class="s">'antialias'</span> <span class="ow">in</span> <span class="n">kargs</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'antialias'</span><span class="p">]</span> <span class="o">=</span> <span class="n">kargs</span><span class="p">[</span><span class="s">'antialias'</span><span class="p">]</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'set'</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'update'</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">sigPlotChanged</span><span class="o">.</span><span class="n">emit</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'emit'</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">generatePath</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'stepMode'</span><span class="p">]:</span>
<span class="c">## each value in the x/y arrays generates 2 points.</span>
<span class="n">x2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">empty</span><span class="p">((</span><span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">),</span><span class="mi">2</span><span class="p">),</span> <span class="n">dtype</span><span class="o">=</span><span class="n">x</span><span class="o">.</span><span class="n">dtype</span><span class="p">)</span>
<span class="n">x2</span><span class="p">[:]</span> <span class="o">=</span> <span class="n">x</span><span class="p">[:,</span><span class="n">np</span><span class="o">.</span><span class="n">newaxis</span><span class="p">]</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">x2</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="n">x2</span><span class="o">.</span><span class="n">size</span><span class="p">)[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
<span class="n">y2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">empty</span><span class="p">((</span><span class="nb">len</span><span class="p">(</span><span class="n">y</span><span class="p">),</span><span class="mi">2</span><span class="p">),</span> <span class="n">dtype</span><span class="o">=</span><span class="n">y</span><span class="o">.</span><span class="n">dtype</span><span class="p">)</span>
<span class="n">y2</span><span class="p">[:]</span> <span class="o">=</span> <span class="n">y</span><span class="p">[:,</span><span class="n">np</span><span class="o">.</span><span class="n">newaxis</span><span class="p">]</span>
<span class="n">y</span> <span class="o">=</span> <span class="n">y2</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="n">y2</span><span class="o">.</span><span class="n">size</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="c">## If we have a fill level, add two extra points at either end</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">x2</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="n">x2</span><span class="o">.</span><span class="n">size</span><span class="p">)</span>
<span class="n">y2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">empty</span><span class="p">((</span><span class="nb">len</span><span class="p">(</span><span class="n">y</span><span class="p">)</span><span class="o">+</span><span class="mi">2</span><span class="p">,</span><span class="mi">2</span><span class="p">),</span> <span class="n">dtype</span><span class="o">=</span><span class="n">y</span><span class="o">.</span><span class="n">dtype</span><span class="p">)</span>
<span class="n">y2</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="n">y</span><span class="p">[:,</span><span class="n">np</span><span class="o">.</span><span class="n">newaxis</span><span class="p">]</span>
<span class="n">y</span> <span class="o">=</span> <span class="n">y2</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="n">y2</span><span class="o">.</span><span class="n">size</span><span class="p">)[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
<span class="n">y</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]</span>
<span class="n">y</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]</span>
<span class="n">path</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">arrayToQPath</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">connect</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'connect'</span><span class="p">])</span>
<span class="k">return</span> <span class="n">path</span>
<span class="k">def</span> <span class="nf">getPath</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">path</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">x</span><span class="p">,</span><span class="n">y</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getData</span><span class="p">()</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="bp">None</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="ow">or</span> <span class="n">y</span> <span class="ow">is</span> <span class="bp">None</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">y</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">path</span> <span class="o">=</span> <span class="n">QtGui</span><span class="o">.</span><span class="n">QPainterPath</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">path</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">generatePath</span><span class="p">(</span><span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">getData</span><span class="p">())</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">path</span>
<span class="nd">@debug.warnOnException</span> <span class="c">## raising an exception here causes crash</span>
<span class="k">def</span> <span class="nf">paint</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">p</span><span class="p">,</span> <span class="n">opt</span><span class="p">,</span> <span class="n">widget</span><span class="p">):</span>
<span class="n">profiler</span> <span class="o">=</span> <span class="n">debug</span><span class="o">.</span><span class="n">Profiler</span><span class="p">()</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">xData</span> <span class="ow">is</span> <span class="bp">None</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">xData</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span>
<span class="k">if</span> <span class="n">HAVE_OPENGL</span> <span class="ow">and</span> <span class="n">getConfigOption</span><span class="p">(</span><span class="s">'enableExperimental'</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">widget</span><span class="p">,</span> <span class="n">QtOpenGL</span><span class="o">.</span><span class="n">QGLWidget</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">paintGL</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">opt</span><span class="p">,</span> <span class="n">widget</span><span class="p">)</span>
<span class="k">return</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">None</span>
<span class="n">y</span> <span class="o">=</span> <span class="bp">None</span>
<span class="n">path</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getPath</span><span class="p">()</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'generate path'</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_exportOpts</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">False</span><span class="p">:</span>
<span class="n">aa</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_exportOpts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'antialias'</span><span class="p">,</span> <span class="bp">True</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">aa</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'antialias'</span><span class="p">]</span>
<span class="n">p</span><span class="o">.</span><span class="n">setRenderHint</span><span class="p">(</span><span class="n">p</span><span class="o">.</span><span class="n">Antialiasing</span><span class="p">,</span> <span class="n">aa</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'brush'</span><span class="p">]</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">]</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">x</span><span class="p">,</span><span class="n">y</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getData</span><span class="p">()</span>
<span class="n">p2</span> <span class="o">=</span> <span class="n">QtGui</span><span class="o">.</span><span class="n">QPainterPath</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">path</span><span class="p">)</span>
<span class="n">p2</span><span class="o">.</span><span class="n">lineTo</span><span class="p">(</span><span class="n">x</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">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">])</span>
<span class="n">p2</span><span class="o">.</span><span class="n">lineTo</span><span class="p">(</span><span class="n">x</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'fillLevel'</span><span class="p">])</span>
<span class="n">p2</span><span class="o">.</span><span class="n">lineTo</span><span class="p">(</span><span class="n">x</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">y</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="n">p2</span><span class="o">.</span><span class="n">closeSubpath</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span> <span class="o">=</span> <span class="n">p2</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'generate fill path'</span><span class="p">)</span>
<span class="n">p</span><span class="o">.</span><span class="n">fillPath</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'brush'</span><span class="p">])</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'draw fill path'</span><span class="p">)</span>
<span class="n">sp</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkPen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'shadowPen'</span><span class="p">])</span>
<span class="n">cp</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkPen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'pen'</span><span class="p">])</span>
<span class="c">## Copy pens and apply alpha adjustment</span>
<span class="c">#sp = QtGui.QPen(self.opts['shadowPen'])</span>
<span class="c">#cp = QtGui.QPen(self.opts['pen'])</span>
<span class="c">#for pen in [sp, cp]:</span>
<span class="c">#if pen is None:</span>
<span class="c">#continue</span>
<span class="c">#c = pen.color()</span>
<span class="c">#c.setAlpha(c.alpha() * self.opts['alphaHint'])</span>
<span class="c">#pen.setColor(c)</span>
<span class="c">##pen.setCosmetic(True)</span>
<span class="k">if</span> <span class="n">sp</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span> <span class="ow">and</span> <span class="n">sp</span><span class="o">.</span><span class="n">style</span><span class="p">()</span> <span class="o">!=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">Qt</span><span class="o">.</span><span class="n">NoPen</span><span class="p">:</span>
<span class="n">p</span><span class="o">.</span><span class="n">setPen</span><span class="p">(</span><span class="n">sp</span><span class="p">)</span>
<span class="n">p</span><span class="o">.</span><span class="n">drawPath</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="n">p</span><span class="o">.</span><span class="n">setPen</span><span class="p">(</span><span class="n">cp</span><span class="p">)</span>
<span class="n">p</span><span class="o">.</span><span class="n">drawPath</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="n">profiler</span><span class="p">(</span><span class="s">'drawPath'</span><span class="p">)</span>
<span class="c">#print "Render hints:", int(p.renderHints())</span>
<span class="c">#p.setPen(QtGui.QPen(QtGui.QColor(255,0,0)))</span>
<span class="c">#p.drawRect(self.boundingRect())</span>
<span class="k">def</span> <span class="nf">paintGL</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">p</span><span class="p">,</span> <span class="n">opt</span><span class="p">,</span> <span class="n">widget</span><span class="p">):</span>
<span class="n">p</span><span class="o">.</span><span class="n">beginNativePainting</span><span class="p">()</span>
<span class="kn">import</span> <span class="nn">OpenGL.GL</span> <span class="kn">as</span> <span class="nn">gl</span>
<span class="c">## set clipping viewport</span>
<span class="n">view</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getViewBox</span><span class="p">()</span>
<span class="k">if</span> <span class="n">view</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">rect</span> <span class="o">=</span> <span class="n">view</span><span class="o">.</span><span class="n">mapRectToItem</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">view</span><span class="o">.</span><span class="n">boundingRect</span><span class="p">())</span>
<span class="c">#gl.glViewport(int(rect.x()), int(rect.y()), int(rect.width()), int(rect.height()))</span>
<span class="c">#gl.glTranslate(-rect.x(), -rect.y(), 0)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glEnable</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_STENCIL_TEST</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glColorMask</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_FALSE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_FALSE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_FALSE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_FALSE</span><span class="p">)</span> <span class="c"># disable drawing to frame buffer</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glDepthMask</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_FALSE</span><span class="p">)</span> <span class="c"># disable drawing to depth buffer</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glStencilFunc</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_NEVER</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mh">0xFF</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glStencilOp</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_REPLACE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_KEEP</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_KEEP</span><span class="p">)</span>
<span class="c">## draw stencil pattern</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glStencilMask</span><span class="p">(</span><span class="mh">0xFF</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glClear</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_STENCIL_BUFFER_BIT</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glBegin</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_TRIANGLES</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertex2f</span><span class="p">(</span><span class="n">rect</span><span class="o">.</span><span class="n">x</span><span class="p">(),</span> <span class="n">rect</span><span class="o">.</span><span class="n">y</span><span class="p">())</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertex2f</span><span class="p">(</span><span class="n">rect</span><span class="o">.</span><span class="n">x</span><span class="p">()</span><span class="o">+</span><span class="n">rect</span><span class="o">.</span><span class="n">width</span><span class="p">(),</span> <span class="n">rect</span><span class="o">.</span><span class="n">y</span><span class="p">())</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertex2f</span><span class="p">(</span><span class="n">rect</span><span class="o">.</span><span class="n">x</span><span class="p">(),</span> <span class="n">rect</span><span class="o">.</span><span class="n">y</span><span class="p">()</span><span class="o">+</span><span class="n">rect</span><span class="o">.</span><span class="n">height</span><span class="p">())</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertex2f</span><span class="p">(</span><span class="n">rect</span><span class="o">.</span><span class="n">x</span><span class="p">()</span><span class="o">+</span><span class="n">rect</span><span class="o">.</span><span class="n">width</span><span class="p">(),</span> <span class="n">rect</span><span class="o">.</span><span class="n">y</span><span class="p">()</span><span class="o">+</span><span class="n">rect</span><span class="o">.</span><span class="n">height</span><span class="p">())</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertex2f</span><span class="p">(</span><span class="n">rect</span><span class="o">.</span><span class="n">x</span><span class="p">()</span><span class="o">+</span><span class="n">rect</span><span class="o">.</span><span class="n">width</span><span class="p">(),</span> <span class="n">rect</span><span class="o">.</span><span class="n">y</span><span class="p">())</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertex2f</span><span class="p">(</span><span class="n">rect</span><span class="o">.</span><span class="n">x</span><span class="p">(),</span> <span class="n">rect</span><span class="o">.</span><span class="n">y</span><span class="p">()</span><span class="o">+</span><span class="n">rect</span><span class="o">.</span><span class="n">height</span><span class="p">())</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glEnd</span><span class="p">()</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glColorMask</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_TRUE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_TRUE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_TRUE</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_TRUE</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glDepthMask</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_TRUE</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glStencilMask</span><span class="p">(</span><span class="mh">0x00</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glStencilFunc</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_EQUAL</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mh">0xFF</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">x</span><span class="p">,</span> <span class="n">y</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getData</span><span class="p">()</span>
<span class="n">pos</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">empty</span><span class="p">((</span><span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">),</span> <span class="mi">2</span><span class="p">))</span>
<span class="n">pos</span><span class="p">[:,</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="n">x</span>
<span class="n">pos</span><span class="p">[:,</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="n">y</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glEnableClientState</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_VERTEX_ARRAY</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glVertexPointerf</span><span class="p">(</span><span class="n">pos</span><span class="p">)</span>
<span class="n">pen</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">mkPen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'pen'</span><span class="p">])</span>
<span class="n">color</span> <span class="o">=</span> <span class="n">pen</span><span class="o">.</span><span class="n">color</span><span class="p">()</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glColor4f</span><span class="p">(</span><span class="n">color</span><span class="o">.</span><span class="n">red</span><span class="p">()</span><span class="o">/</span><span class="mf">255.</span><span class="p">,</span> <span class="n">color</span><span class="o">.</span><span class="n">green</span><span class="p">()</span><span class="o">/</span><span class="mf">255.</span><span class="p">,</span> <span class="n">color</span><span class="o">.</span><span class="n">blue</span><span class="p">()</span><span class="o">/</span><span class="mf">255.</span><span class="p">,</span> <span class="n">color</span><span class="o">.</span><span class="n">alpha</span><span class="p">()</span><span class="o">/</span><span class="mf">255.</span><span class="p">)</span>
<span class="n">width</span> <span class="o">=</span> <span class="n">pen</span><span class="o">.</span><span class="n">width</span><span class="p">()</span>
<span class="k">if</span> <span class="n">pen</span><span class="o">.</span><span class="n">isCosmetic</span><span class="p">()</span> <span class="ow">and</span> <span class="n">width</span> <span class="o"><</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">width</span> <span class="o">=</span> <span class="mi">1</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glPointSize</span><span class="p">(</span><span class="n">width</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glEnable</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_LINE_SMOOTH</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glEnable</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_BLEND</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glBlendFunc</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_SRC_ALPHA</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_ONE_MINUS_SRC_ALPHA</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glHint</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_LINE_SMOOTH_HINT</span><span class="p">,</span> <span class="n">gl</span><span class="o">.</span><span class="n">GL_NICEST</span><span class="p">)</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glDrawArrays</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_LINE_STRIP</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">pos</span><span class="o">.</span><span class="n">size</span> <span class="o">/</span> <span class="n">pos</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span>
<span class="k">finally</span><span class="p">:</span>
<span class="n">gl</span><span class="o">.</span><span class="n">glDisableClientState</span><span class="p">(</span><span class="n">gl</span><span class="o">.</span><span class="n">GL_VERTEX_ARRAY</span><span class="p">)</span>
<span class="k">finally</span><span class="p">:</span>
<span class="n">p</span><span class="o">.</span><span class="n">endNativePainting</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">clear</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">xData</span> <span class="o">=</span> <span class="bp">None</span> <span class="c">## raw values</span>
<span class="bp">self</span><span class="o">.</span><span class="n">yData</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">xDisp</span> <span class="o">=</span> <span class="bp">None</span> <span class="c">## display values (after log / fft)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">yDisp</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">path</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fillPath</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_mouseBounds</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_boundsCache</span> <span class="o">=</span> <span class="p">[</span><span class="bp">None</span><span class="p">,</span> <span class="bp">None</span><span class="p">]</span>
<span class="c">#del self.xData, self.yData, self.xDisp, self.yDisp, self.path</span>
<span class="k">def</span> <span class="nf">mouseShape</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return a QPainterPath representing the clickable shape of the curve</span>
<span class="sd"> </span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">view</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getViewBox</span><span class="p">()</span>
<span class="k">if</span> <span class="n">view</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">QtGui</span><span class="o">.</span><span class="n">QPainterPath</span><span class="p">()</span>
<span class="n">stroker</span> <span class="o">=</span> <span class="n">QtGui</span><span class="o">.</span><span class="n">QPainterPathStroker</span><span class="p">()</span>
<span class="n">path</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getPath</span><span class="p">()</span>
<span class="n">path</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">mapToItem</span><span class="p">(</span><span class="n">view</span><span class="p">,</span> <span class="n">path</span><span class="p">)</span>
<span class="n">stroker</span><span class="o">.</span><span class="n">setWidth</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">opts</span><span class="p">[</span><span class="s">'mouseWidth'</span><span class="p">])</span>
<span class="n">mousePath</span> <span class="o">=</span> <span class="n">stroker</span><span class="o">.</span><span class="n">createStroke</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">mapFromItem</span><span class="p">(</span><span class="n">view</span><span class="p">,</span> <span class="n">mousePath</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_mouseShape</span>
<span class="k">def</span> <span class="nf">mouseClickEvent</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ev</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">clickable</span> <span class="ow">or</span> <span class="n">ev</span><span class="o">.</span><span class="n">button</span><span class="p">()</span> <span class="o">!=</span> <span class="n">QtCore</span><span class="o">.</span><span class="n">Qt</span><span class="o">.</span><span class="n">LeftButton</span><span class="p">:</span>
<span class="k">return</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">mouseShape</span><span class="p">()</span><span class="o">.</span><span class="n">contains</span><span class="p">(</span><span class="n">ev</span><span class="o">.</span><span class="n">pos</span><span class="p">()):</span>
<span class="n">ev</span><span class="o">.</span><span class="n">accept</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">sigClicked</span><span class="o">.</span><span class="n">emit</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">ROIPlotItem</span><span class="p">(</span><span class="n">PlotCurveItem</span><span class="p">):</span>
<span class="sd">"""Plot curve that monitors an ROI and image for changes to automatically replot."""</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">roi</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="n">img</span><span class="p">,</span> <span class="n">axes</span><span class="o">=</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">),</span> <span class="n">xVals</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">roi</span> <span class="o">=</span> <span class="n">roi</span>
<span class="bp">self</span><span class="o">.</span><span class="n">roiData</span> <span class="o">=</span> <span class="n">data</span>
<span class="bp">self</span><span class="o">.</span><span class="n">roiImg</span> <span class="o">=</span> <span class="n">img</span>
<span class="bp">self</span><span class="o">.</span><span class="n">axes</span> <span class="o">=</span> <span class="n">axes</span>
<span class="bp">self</span><span class="o">.</span><span class="n">xVals</span> <span class="o">=</span> <span class="n">xVals</span>
<span class="n">PlotCurveItem</span><span class="o">.</span><span class="n">__init__</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">getRoiData</span><span class="p">(),</span> <span class="n">x</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">xVals</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="n">color</span><span class="p">)</span>
<span class="c">#roi.connect(roi, QtCore.SIGNAL('regionChanged'), self.roiChangedEvent)</span>
<span class="n">roi</span><span class="o">.</span><span class="n">sigRegionChanged</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">roiChangedEvent</span><span class="p">)</span>
<span class="c">#self.roiChangedEvent()</span>
<span class="k">def</span> <span class="nf">getRoiData</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">d</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">roi</span><span class="o">.</span><span class="n">getArrayRegion</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">roiData</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">roiImg</span><span class="p">,</span> <span class="n">axes</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">axes</span><span class="p">)</span>
<span class="k">if</span> <span class="n">d</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">return</span>
<span class="k">while</span> <span class="n">d</span><span class="o">.</span><span class="n">ndim</span> <span class="o">></span> <span class="mi">1</span><span class="p">:</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">d</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">axis</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
<span class="k">return</span> <span class="n">d</span>
<span class="k">def</span> <span class="nf">roiChangedEvent</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">d</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getRoiData</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">updateData</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">xVals</span><span class="p">)</span>
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