<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>user_interfaces example code: wxcursor_demo.py — Matplotlib v1.1.1 documentation</title> <link rel="stylesheet" href="../../_static/mpl.css" type="text/css" /> <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../', VERSION: '1.1.1', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../../_static/jquery.js"></script> <script type="text/javascript" src="../../_static/underscore.js"></script> <script type="text/javascript" src="../../_static/doctools.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Matplotlib v1.1.1 documentation" href="../../_static/opensearch.xml"/> <link rel="top" title="Matplotlib v1.1.1 documentation" href="../../index.html" /> </head> <body> <!-- Piwik --> <script type="text/javascript"> if ("matplotlib.sourceforge.net" == document.location.hostname || "matplotlib.sf.net" == document.location.hostname) { var pkBaseURL = (("https:" == document.location.protocol) ? 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<input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="user-interfaces-example-code-wxcursor-demo-py"> <span id="user-interfaces-wxcursor-demo"></span><h1>user_interfaces example code: wxcursor_demo.py<a class="headerlink" href="#user-interfaces-example-code-wxcursor-demo-py" title="Permalink to this headline">ΒΆ</a></h1> <p>[<a class="reference external" href="wxcursor_demo.py">source code</a>]</p> <div class="highlight-python"><div class="highlight"><pre><span class="sd">"""</span> <span class="sd">Example to draw a cursor and report the data coords in wx</span> <span class="sd">"""</span> <span class="kn">import</span> <span class="nn">matplotlib</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">use</span><span class="p">(</span><span class="s">'WXAgg'</span><span class="p">)</span> <span class="kn">from</span> <span class="nn">matplotlib.backends.backend_wxagg</span> <span class="kn">import</span> <span class="n">FigureCanvasWxAgg</span> <span class="k">as</span> <span class="n">FigureCanvas</span> <span class="kn">from</span> <span class="nn">matplotlib.backends.backend_wx</span> <span class="kn">import</span> <span class="n">NavigationToolbar2Wx</span> <span class="kn">from</span> <span class="nn">matplotlib.figure</span> <span class="kn">import</span> <span class="n">Figure</span> <span class="kn">from</span> <span class="nn">numpy</span> <span class="kn">import</span> <span class="n">arange</span><span class="p">,</span> <span class="n">sin</span><span class="p">,</span> <span class="n">pi</span> <span class="kn">import</span> <span class="nn">wx</span> <span class="k">class</span> <span class="nc">CanvasFrame</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">Frame</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="p">):</span> <span class="n">wx</span><span class="o">.</span><span class="n">Frame</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">None</span><span class="p">,</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="s">'CanvasFrame'</span><span class="p">,</span><span class="n">size</span><span class="o">=</span><span class="p">(</span><span class="mi">550</span><span class="p">,</span><span class="mi">350</span><span class="p">))</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetBackgroundColour</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">NamedColor</span><span class="p">(</span><span class="s">"WHITE"</span><span class="p">))</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure</span> <span class="o">=</span> <span class="n">Figure</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">111</span><span class="p">)</span> <span class="n">t</span> <span class="o">=</span> <span class="n">arange</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">3.0</span><span class="p">,</span><span class="mf">0.01</span><span class="p">)</span> <span class="n">s</span> <span class="o">=</span> <span class="n">sin</span><span class="p">(</span><span class="mi">2</span><span class="o">*</span><span class="n">pi</span><span class="o">*</span><span class="n">t</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">t</span><span class="p">,</span><span class="n">s</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'t'</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'sin(t)'</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure_canvas</span> <span class="o">=</span> <span class="n">FigureCanvas</span><span class="p">(</span><span class="bp">self</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">figure</span><span class="p">)</span> <span class="c"># Note that event is a MplEvent</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure_canvas</span><span class="o">.</span><span class="n">mpl_connect</span><span class="p">(</span><span class="s">'motion_notify_event'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">UpdateStatusBar</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure_canvas</span><span class="o">.</span><span class="n">Bind</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">EVT_ENTER_WINDOW</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">ChangeCursor</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">BoxSizer</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">VERTICAL</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="o">.</span><span class="n">Add</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">figure_canvas</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">wx</span><span class="o">.</span><span class="n">LEFT</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">TOP</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">GROW</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetSizer</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">Fit</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">statusBar</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">StatusBar</span><span class="p">(</span><span class="bp">self</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">statusBar</span><span class="o">.</span><span class="n">SetFieldsCount</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">SetStatusBar</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">statusBar</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span> <span class="o">=</span> <span class="n">NavigationToolbar2Wx</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">figure_canvas</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="o">.</span><span class="n">Add</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">wx</span><span class="o">.</span><span class="n">LEFT</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">EXPAND</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="o">.</span><span class="n">Show</span><span class="p">()</span> <span class="k">def</span> <span class="nf">ChangeCursor</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure_canvas</span><span class="o">.</span><span class="n">SetCursor</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">StockCursor</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">CURSOR_BULLSEYE</span><span class="p">))</span> <span class="k">def</span> <span class="nf">UpdateStatusBar</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span> <span class="k">if</span> <span class="n">event</span><span class="o">.</span><span class="n">inaxes</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="n">event</span><span class="o">.</span><span class="n">xdata</span><span class="p">,</span> <span class="n">event</span><span class="o">.</span><span class="n">ydata</span> <span class="bp">self</span><span class="o">.</span><span class="n">statusBar</span><span class="o">.</span><span class="n">SetStatusText</span><span class="p">((</span> <span class="s">"x= "</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">x</span><span class="p">)</span> <span class="o">+</span> <span class="s">" y="</span> <span class="o">+</span><span class="nb">str</span><span class="p">(</span><span class="n">y</span><span class="p">)</span> <span class="p">),</span> <span class="mi">0</span><span class="p">)</span> <span class="k">class</span> <span class="nc">App</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">App</span><span class="p">):</span> <span class="k">def</span> <span class="nf">OnInit</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="s">'Create the main window and insert the custom frame'</span> <span class="n">frame</span> <span class="o">=</span> <span class="n">CanvasFrame</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetTopWindow</span><span class="p">(</span><span class="n">frame</span><span class="p">)</span> <span class="n">frame</span><span class="o">.</span><span class="n">Show</span><span class="p">(</span><span class="bp">True</span><span class="p">)</span> <span class="k">return</span> <span class="bp">True</span> <span class="k">if</span> <span class="n">__name__</span><span class="o">==</span><span class="s">'__main__'</span><span class="p">:</span> <span class="n">app</span> <span class="o">=</span> <span class="n">App</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> <span class="n">app</span><span class="o">.</span><span class="n">MainLoop</span><span class="p">()</span> </pre></div> </div> <p>Keywords: python, matplotlib, pylab, example, codex (see <a class="reference internal" href="../../faq/howto_faq.html#how-to-search-examples"><em>Search examples</em></a>)</p> </div> </div> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li><a href="../../index.html">home</a>| </li> <li><a href="../../search.html">search</a>| </li> <li><a href="../index.html">examples</a>| </li> <li><a href="../../gallery.html">gallery</a>| </li> <li><a href="../../contents.html">docs</a> »</li> </ul> </div> <div 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