Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F99249367
User_guide1_3.html
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Wed, Jan 22, 18:55
Size
6 KB
Mime Type
text/html
Expires
Fri, Jan 24, 18:55 (1 d, 21 h)
Engine
blob
Format
Raw Data
Handle
23706814
Attached To
rINSTCONTROL Instrument Control
User_guide1_3.html
View Options
<html xmlns:saxon="http://icl.com/saxon">
<head>
<link rel="stylesheet" type="text/css" href="doc.css"/>
<link rel="stylesheet" type="text/css" href=""/>
<meta author="The MathWorks Ltd."/>
<meta copyright="2017 The MathWorks Ltd."/>
<title>Sizes and units</title>
</head>
<body>
<table class="header" width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td bgcolor="#e4f0f8"><A href="User_guide.html"><font face="Arial" bgcolor="#e4f0f8" size="+0" underline="0" color="#000000"><b>User_guide</b></font></A></td>
<td width="36" bgcolor="#e4f0f8"><A HREF="User_guide1_2.html"><IMG SRC="Images/leftarrow.png" BORDER="0" ALT="previous page"/></A><A HREF="User_guide1_4.html"><IMG SRC="Images/rightarrow.png" BORDER="0" ALT="next page"/></A></td>
</tr>
</table>
<br clear="all"/>
<h2>1.3: Sizes and units <a href="User_guide1.html"><img src="Images/uparrow.png" border="0" align="top" alt="Go back up one level"/></a></h2>
<p>In the previous section we noted that when using layouts
you never need to set the position or size of a user-interface
component yourself - the layouts take care of it. So how do
you control the sizes of the components?</p>
<p>Each layout that arranges multiple items within its drawing area
has a sizing property: for horizontal boxes this is <code>Widths</code>
and for vertical boxes <code>Heights</code>; for grids we have both <code>Widths</code>
and <code>Heights</code>. These all obey the same convention:</p>
<ol>
<li>Positive numbers indicate sizes in pixels (similar to "pixel" units)</li>
<li>Negative numbers indicate a weighting for variable sizing (similar to "normalized" units)</li>
</ol>
<p>By default all sizes are set to -1 (variable size with unit weighting).</p>
<p>Let's take a simple example:</p>
<example>
<pre style="background-color: #eeeeff; margin-left: 20px; margin-right: 20px"><font color="#000011">f = <a href="matlab:doc figure"><code class="FUNCTION">figure</code></a>();
layout = <a href="uix.HBox.html"><code class="FUNCTION">uix.HBox</code></a>( 'Parent', f );
<a href="matlab:doc uicontrol"><code class="FUNCTION">uicontrol</code></a>( 'String', 'Button 1', 'Parent', layout );
<a href="matlab:doc uicontrol"><code class="FUNCTION">uicontrol</code></a>( 'String', 'Button 2', 'Parent', layout );
<a href="matlab:doc uicontrol"><code class="FUNCTION">uicontrol</code></a>( 'String', 'Button 3', 'Parent', layout );</font></pre>
<p style="background-color: #ddddee; margin-left: 20px; margin-right: 20px"><font color="#000022"><center><img src="Images/basics_example4.png"/></center></font></p>
</example>
<p>We can set the middle element to be twice as wide as the others
(but still variable width) by setting its weight to -2 with the others at -1:</p>
<example>
<pre style="background-color: #eeeeff; margin-left: 20px; margin-right: 20px"><font color="#000011">layout.Widths = [-1 -2 -1]</font></pre>
<p style="background-color: #ddddee; margin-left: 20px; margin-right: 20px"><font color="#000022"><center><img src="Images/basics_example5.png"/></center></font></p>
</example>
<p>Alternatively we might want the first element to have a
fixed width of 100 pixels with the others filling any remaining
space equally:</p>
<example>
<pre style="background-color: #eeeeff; margin-left: 20px; margin-right: 20px"><font color="#000011">layout.Widths = [100 -1 -1]</font></pre>
<p style="background-color: #ddddee; margin-left: 20px; margin-right: 20px"><font color="#000022"><center><img src="Images/basics_example6.png"/></center></font></p>
</example>
<p>This ability to mix fixed and variable sized elements is
crucial in interface design. It really comes into its own when building
a hierarchy of layouts, described next.</p>
<br clear="all"/><hr/><h3 class="hbg"><a name=""> </a><a name="1.3.1">
</a>1.3.1:
Minimum sizes <a href="#Top"><img src="Images/uparrow.png" border="0" align="top" alt="Go back up one level"/></a></h3>
<p>Many of the multi-element layouts also provide a <code>MinimumWidths</code>
or <code>MinimumHeights</code>
property to prevent an element becoming too small. This is measured in
pixels and defaults to one pixel. Take care to ensure that the available
space is at least the sum of the minimum sizes, plus any padding and
spacing.</p>
<br clear="ALL"/>
<table class="footer" width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="18" height="15" bgcolor="#e4f0f8" align="left"><a href="User_guide1_2.html"><img src="images/leftarrow.png" border="0" alt="previous page"/></a></td>
<td width="40%" height="15" bgcolor="#e4f0f8" align="left"><a href="User_guide1_2.html"><font face="arial" bgcolor="#e4f0f8" size="normal" underline="0" color="#000000">Types of layout</font></a></td>
<td width="20%" height="15" bgcolor="#e4f0f8" align="center"><a href="index.html"><font face="arial" bgcolor="#e4f0f8" size="normal" underline="0" color="#000000">[Top]</font></a></td>
<td width="40%" height="15" bgcolor="#e4f0f8" align="right"><a href="User_guide1_4.html"><font face="arial" bgcolor="#e4f0f8" size="normal" underline="0" color="#000000">Layout hierarchies</font></a></td>
<td width="18" height="15" bgcolor="#e4f0f8" align="right"><a href="User_guide1_4.html"><img src="images/rightarrow.png" border="0" alt="next page"/></a></td>
</tr>
</table>
<font face="Arial" bgcolor="#e4f0f8" size="normal" underline="0" color="#000000">© 2017 The MathWorks Ltd</font>
<TT>• </TT><a href="matlab: termsOfUse">Terms of Use</a>
<TT>• </TT><a href="matlab: helpview([matlabroot,'/patents.txt'])">Patents</a>
<TT>• </TT><a href="matlab: helpview([matlabroot,'/trademarks.txt'])">Trademarks</a>
</body>
</html>
Event Timeline
Log In to Comment