-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathmenu.html
More file actions
192 lines (150 loc) · 12.1 KB
/
menu.html
File metadata and controls
192 lines (150 loc) · 12.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.18.1: http://docutils.sourceforge.net/" />
<title>Menus — VPython 3.2 documentation</title>
<link rel="stylesheet" type="text/css" href="_static/pygments.css" />
<link rel="stylesheet" type="text/css" href="_static/alabaster.css" />
<script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
<script src="_static/jquery.js"></script>
<script src="_static/underscore.js"></script>
<script src="_static/_sphinx_javascript_frameworks_compat.js"></script>
<script src="_static/doctools.js"></script>
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
<link rel="next" title="Mouse Input" href="mouse.html" />
<link rel="prev" title="Key Input" href="key.html" />
<link rel="stylesheet" href="_static/custom.css" type="text/css" />
<meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
</head><body>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<section id="menus">
<h1>Menus<a class="headerlink" href="#menus" title="Permalink to this heading">¶</a></h1>
<img alt="_images/menu.png" src="_images/menu.png" />
<p>A menu widget provides a drop-down menu.</p>
<dl class="py function">
<dt class="sig sig-object py" id="menu">
<span class="sig-name descname"><span class="pre">menu</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">bind</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">myfunction</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">choices</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">choicelist</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#menu" title="Permalink to this definition">¶</a></dt>
<dd><dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>bind</strong> (<em>function</em>) – The function to be called when a menu selection is made.</p></li>
<li><p><strong>choices</strong> (<em>list</em>) – The list of options (as strings) to appear on the menu.</p></li>
<li><p><strong>selected</strong> (<em>string</em>) – The text of the currently selected menu option.</p></li>
<li><p><strong>index</strong> (<em>scalar</em>) – The list position of the currently selected option.</p></li>
<li><p><strong>disabled</strong> (<em>boolean</em>) – If True, menu is grayed out and does not respond.</p></li>
<li><p><strong>delete</strong><strong>(</strong><strong>)</strong> – <code class="docutils literal notranslate"><span class="pre">mymenu.delete()</span></code> deletes the menu.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<p>The following code creates a menu to change the color of an object:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pointer</span> <span class="o">=</span> <span class="n">arrow</span><span class="p">(</span><span class="n">pos</span><span class="o">=</span><span class="n">vec</span><span class="p">(</span><span class="o">-</span><span class="mi">3</span><span class="p">,</span><span class="o">-</span><span class="mi">3</span><span class="p">,</span><span class="mi">0</span><span class="p">),</span> <span class="n">axis</span><span class="o">=</span><span class="n">vec</span><span class="p">(</span><span class="mi">6</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">0</span><span class="p">),</span> <span class="n">color</span><span class="o">=</span><span class="n">color</span><span class="o">.</span><span class="n">white</span> <span class="p">)</span>
<span class="k">def</span> <span class="nf">changeattr</span><span class="p">(</span><span class="n">evt</span><span class="p">):</span>
<span class="n">console</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="n">evt</span><span class="p">)</span>
<span class="k">if</span> <span class="n">evt</span><span class="o">.</span><span class="n">index</span> <span class="o"><</span> <span class="mi">1</span><span class="p">:</span>
<span class="k">pass</span>
<span class="k">elif</span> <span class="n">evt</span><span class="o">.</span><span class="n">index</span> <span class="ow">is</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">pointer</span><span class="o">.</span><span class="n">color</span><span class="o">=</span><span class="n">color</span><span class="o">.</span><span class="n">yellow</span>
<span class="k">elif</span> <span class="n">evt</span><span class="o">.</span><span class="n">index</span> <span class="ow">is</span> <span class="mi">2</span><span class="p">:</span>
<span class="n">pointer</span><span class="o">.</span><span class="n">color</span><span class="o">=</span><span class="n">color</span><span class="o">.</span><span class="n">magenta</span>
<span class="k">elif</span> <span class="n">evt</span><span class="o">.</span><span class="n">index</span> <span class="ow">is</span> <span class="mi">3</span><span class="p">:</span>
<span class="n">pointer</span><span class="o">.</span><span class="n">color</span><span class="o">=</span><span class="n">color</span><span class="o">.</span><span class="n">cyan</span>
<span class="n">choicelist</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'Color'</span><span class="p">,</span> <span class="s1">'yellow'</span><span class="p">,</span> <span class="s1">'magenta'</span><span class="p">,</span> <span class="s1">'cyan'</span><span class="p">]</span>
<span class="n">menu</span><span class="p">(</span> <span class="n">choices</span><span class="o">=</span><span class="n">choicelist</span><span class="p">,</span> <span class="n">bind</span><span class="o">=</span><span class="n">changeattr</span> <span class="p">)</span>
</pre></div>
</div>
<section id="menu-event-attributes">
<h2>Menu Event Attributes<a class="headerlink" href="#menu-event-attributes" title="Permalink to this heading">¶</a></h2>
<p>The argument of the event handler function (‘evt’, in the code above) will have the following attributes (properties of the menu):</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">evt.index</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">evt.selected</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">evt.disabled</span></code></p></li>
</ul>
<p>Additionally, any attributes you have created for the widget (for example, <code class="docutils literal notranslate"><span class="pre">name</span></code> or <code class="docutils literal notranslate"><span class="pre">id</span></code>), will be available as attributes of <code class="docutils literal notranslate"><span class="pre">evt</span></code>.</p>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<p><a class="reference internal" href="userinput.html#eventhandler"><span class="std std-ref">Event Handlers</span></a>; <a class="reference internal" href="userinput.html#event-handling"><span class="std std-ref">Processing Events</span></a>; <a class="reference internal" href="userinput.html#polling"><span class="std std-ref">Polling</span></a>; <a class="reference internal" href="widgetPosition.html"><span class="doc">Widget Position</span></a></p>
</div>
</section>
</section>
</div>
</div>
</div>
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
<div class="sphinxsidebarwrapper">
<h1 class="logo"><a href="index.html">VPython</a></h1>
<h3>Navigation</h3>
<p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="objects.html">3D Objects</a></li>
<li class="toctree-l1"><a class="reference internal" href="rate.html">Animations</a></li>
<li class="toctree-l1"><a class="reference internal" href="canvas.html">Canvases</a></li>
<li class="toctree-l1"><a class="reference internal" href="cameraAndLights.html">Camera and Lighting</a></li>
<li class="toctree-l1"><a class="reference internal" href="colorOpacityGlow.html">Color/Opacity/Glow</a></li>
<li class="toctree-l1"><a class="reference internal" href="makeshapes.html">Design New Objects</a></li>
<li class="toctree-l1"><a class="reference internal" href="file.html">Files/Libraries</a></li>
<li class="toctree-l1"><a class="reference internal" href="graph.html">Graphs</a></li>
<li class="toctree-l1"><a class="reference internal" href="math.html">Math Functions</a></li>
<li class="toctree-l1"><a class="reference internal" href="workwithobjects.html">Object Attachments</a></li>
<li class="toctree-l1"><a class="reference internal" href="rotation.html">Rotation</a></li>
<li class="toctree-l1"><a class="reference internal" href="textoutput.html">Text output</a></li>
<li class="toctree-l1"><a class="reference internal" href="texture.html">Textures</a></li>
<li class="toctree-l1 current"><a class="reference internal" href="userinput.html">User Input</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="button.html">Buttons</a></li>
<li class="toctree-l2"><a class="reference internal" href="checkbox.html">Checkboxes</a></li>
<li class="toctree-l2"><a class="reference internal" href="key.html">Key input</a></li>
<li class="toctree-l2 current"><a class="current reference internal" href="#">Menus</a></li>
<li class="toctree-l2"><a class="reference internal" href="mouse.html">Mouse input</a></li>
<li class="toctree-l2"><a class="reference internal" href="radiobutton.html">Radio buttons</a></li>
<li class="toctree-l2"><a class="reference internal" href="textinput.html">Text input</a></li>
<li class="toctree-l2"><a class="reference internal" href="slider.html">Sliders</a></li>
<li class="toctree-l2"><a class="reference internal" href="widgetPosition.html">Widget Position</a></li>
<li class="toctree-l2"><a class="reference internal" href="userinput.html#processing-events">Processing Events</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="webvs7.html">VPython/WebVpython</a></li>
<li class="toctree-l1"><a class="reference internal" href="license.html">VPython license</a></li>
<li class="toctree-l1"><a class="reference internal" href="resources.html">Additional Resources</a></li>
</ul>
<div class="relations">
<h3>Related Topics</h3>
<ul>
<li><a href="index.html">Documentation overview</a><ul>
<li><a href="userinput.html">User Input</a><ul>
<li>Previous: <a href="key.html" title="previous chapter">Key Input</a></li>
<li>Next: <a href="mouse.html" title="next chapter">Mouse Input</a></li>
</ul></li>
</ul></li>
</ul>
</div>
<div id="searchbox" style="display: none" role="search">
<h3 id="searchlabel">Quick search</h3>
<div class="searchformwrapper">
<form class="search" action="search.html" method="get">
<input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
<input type="submit" value="Go" />
</form>
</div>
</div>
<script>document.getElementById('searchbox').style.display = "block"</script>
</div>
</div>
<div class="clearer"></div>
</div>
<div class="footer">
©2023, Ruth Chabay and Bruce Sherwood.
|
Powered by <a href="http://sphinx-doc.org/">Sphinx 5.0.2</a>
& <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.12</a>
|
<a href="_sources/menu.rst.txt"
rel="nofollow">Page source</a>
</div>
</body>
</html>