-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathtextinput.html
More file actions
220 lines (177 loc) · 14.2 KB
/
textinput.html
File metadata and controls
220 lines (177 loc) · 14.2 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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
<!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>Text Input — 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="Sliders" href="slider.html" />
<link rel="prev" title="Radio Buttons" href="radiobutton.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="text-input">
<h1><a class="toc-backref" href="#id1" role="doc-backlink">Text Input</a><a class="headerlink" href="#text-input" title="Permalink to this heading">¶</a></h1>
<p>The commands <code class="docutils literal notranslate"><span class="pre">winput</span></code> and <code class="docutils literal notranslate"><span class="pre">input</span></code> allow a user to type input to be processed by a program.</p>
<nav class="contents" id="contents">
<p class="topic-title">Contents</p>
<ul class="simple">
<li><p><a class="reference internal" href="#text-input" id="id1">Text Input</a></p>
<ul>
<li><p><a class="reference internal" href="#input" id="id2">input</a></p></li>
<li><p><a class="reference internal" href="#winput" id="id3">winput</a></p></li>
</ul>
</li>
</ul>
</nav>
<section id="input">
<h2><a class="toc-backref" href="#id2" role="doc-backlink">input</a><a class="headerlink" href="#input" title="Permalink to this heading">¶</a></h2>
<p>The <code class="docutils literal notranslate"><span class="pre">input()</span></code> function accepts user input from a pop-up dialog box. This is similar to the Python <code class="docutils literal notranslate"><span class="pre">input()</span></code> function, except that it allows the specification of a prompt.</p>
<dl class="py function">
<dt class="sig sig-object py">
<span class="sig-name descname"><span class="pre">mytext</span> <span class="pre">=</span> <span class="pre">input(prompt='Enter</span> <span class="pre">a</span> <span class="pre">color:')</span></span></dt>
<dd><dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>prompt</strong> (<em>string</em>) – Text of the prompt.</p>
</dd>
</dl>
</dd></dl>
<p>If the user presses ‘Cancel’ instead of typing a string, the function returns <code class="docutils literal notranslate"><span class="pre">None</span></code>. Input can be converted to a number: <code class="docutils literal notranslate"><span class="pre">val</span> <span class="pre">=</span> <span class="pre">float(mytext)</span></code>.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ss</span> <span class="o">=</span> <span class="nb">input</span><span class="p">(</span> <span class="s1">'What is your name?'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">ss</span> <span class="o">!=</span> <span class="kc">None</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">'Hello'</span><span class="p">,</span> <span class="n">ss</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">'Goodbye'</span><span class="p">)</span>
</pre></div>
</div>
</section>
<section id="winput">
<h2><a class="toc-backref" href="#id3" role="doc-backlink">winput</a><a class="headerlink" href="#winput" title="Permalink to this heading">¶</a></h2>
<p>The <code class="docutils literal notranslate"><span class="pre">winput()</span></code> widget can be placed either in the caption area of a canvas (the default position) or in the title area. It displays a box into which a user can type. The user must select the text input area before typing. A function bound to a <em>winput</em> widget is executed if the user presses <em>Enter</em> or <em>Tab</em> or clicks somewhere other than in a VPython canvas. The attributes below are labeled “not modifiable” if they cannot be modified after creation.</p>
<dl class="py function">
<dt class="sig sig-object py">
<span class="sig-name descname"><span class="pre">ww</span> <span class="pre">=</span> <span class="pre">winput(bind=myfunction,</span> <span class="pre">prompt='value',</span> <span class="pre">type='numeric')</span></span></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 the input is ended (by Enter, Tab, or click outside canvas).</p></li>
<li><p><strong>prompt</strong> (<em>string</em>) – Text displayed to left of the winput box. (WebVPython only.)</p></li>
<li><p><strong>type</strong> (<em>string</em>) – The type of input requested: ‘numeric’ (default) or ‘string’. Not modifiable.</p></li>
<li><p><strong>pos</strong> (<em>attribute of canvas</em>) – Location of checkbox. Default is scene.caption_anchor.</p></li>
<li><p><strong>width</strong> (<em>scalar</em>) – Width of input box in pixels. Default is 100. Not modifiable.</p></li>
<li><p><strong>height</strong> (<em>scalar</em>) – Height of input box in pixels. Default 20. Not modifiable.</p></li>
<li><p><strong>text</strong> (<em>string</em>) – The text displayed in the box, whether entered by user or set by program.</p></li>
<li><p><strong>number</strong> (<em>scalar</em>) – The number that results from evaluating the user’s input text if the type is ‘numeric’, otherwise None. Not modifiable.</p></li>
<li><p><strong>disabled</strong> (<em>boolean</em>) – If True, text is grayed out and winput is inactive.</p></li>
<li><p><strong>delete</strong><strong>(</strong><strong>)</strong> (<em>method</em>) – A method to delete the winput box from the displayl.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<p>This code uses <em>winput</em> to adjust the radius of a sphere:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ss</span> <span class="o">=</span> <span class="n">sphere</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">2</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">),</span> <span class="n">radius</span><span class="o">=</span><span class="mf">0.2</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">yellow</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">change_radius</span><span class="p">(</span><span class="n">evt</span><span class="p">):</span>
<span class="n">rad</span> <span class="o">=</span> <span class="n">evt</span><span class="o">.</span><span class="n">number</span>
<span class="k">if</span> <span class="n">rad</span> <span class="o">!=</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="n">rad</span> <span class="o"><</span> <span class="mi">10</span><span class="p">:</span>
<span class="n">ss</span><span class="o">.</span><span class="n">radius</span><span class="o">=</span><span class="n">evt</span><span class="o">.</span><span class="n">number</span>
<span class="k">else</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="n">rad</span> <span class="o">+</span> <span class="s1">' is too large'</span><span class="p">)</span>
<span class="n">ww</span><span class="o">.</span><span class="n">text</span> <span class="o">=</span> <span class="s1">''</span>
<span class="n">scene</span><span class="o">.</span><span class="n">append_to_caption</span><span class="p">(</span><span class="s1">'Radius must be less than 10 </span><span class="se">\n</span><span class="s1">'</span><span class="p">)</span>
<span class="n">ww</span> <span class="o">=</span> <span class="n">winput</span><span class="p">(</span><span class="n">prompt</span><span class="o">=</span><span class="s1">'Radius:'</span><span class="p">,</span> <span class="n">bind</span><span class="o">=</span><span class="n">change_radius</span><span class="p">,</span> <span class="nb">type</span><span class="o">=</span><span class="s1">'numeric'</span><span class="p">)</span>
</pre></div>
</div>
<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"><a class="reference internal" href="menu.html">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 current"><a class="current reference internal" href="#">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="radiobutton.html" title="previous chapter">Radio Buttons</a></li>
<li>Next: <a href="slider.html" title="next chapter">Sliders</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/textinput.rst.txt"
rel="nofollow">Page source</a>
</div>
</body>
</html>