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<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="2018 The MathWorks Ltd."/>

      <title>Minimize and maximize</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_guide4_1.html"><IMG SRC="Images/leftarrow.png" BORDER="0" ALT="previous page"/></A><A HREF="User_guide4_3.html"><IMG SRC="Images/rightarrow.png" BORDER="0" ALT="next page"/></A></td>

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      <br clear="all"/>

          

      <h2>4.2: Minimize and maximize&nbsp;<a href="User_guide4.html"><img src="Images/uparrow.png" border="0" align="top" alt="Go back up one level"/></a></h2>

      

        <p>

            When a <a href="uix.BoxPanel.html"><code class="FUNCTION">uix.BoxPanel</code></a> has its <code>MinimizeFcn</code> 

            filled in, a minimize/maximize button (▴/▾) is shown in the upper-right of the

            title-bar. When the user clicks this button the specified function

            is called. Since the behaviour of the parent container is

            different in different use-cases, it is up to the user to write

            some code to actually resize the panel. Note that minimizing

            a panel to its title-bar only really makes sense inside a 

            <a href="uix.VBox.html"><code class="FUNCTION">uix.VBox</code></a> or <a href="uix.VBoxFlex.html"><code class="FUNCTION">uix.VBoxFlex</code></a>.

                 </p>

                 <p>The following simple example shows how to add minimize/maximize

                     functionality to a box full of panels. Save the code into

                 a file called "minimizeexample.m" to run it.</p>

                 

                 <p>(The code for this example can be found here: 

                     [ <a href="Examples/minimizeexample.m">view</a>

                     | <a href="matlab: edit(fullfile(layoutDocRoot,'Examples','minimizeexample.m'))">edit</a>

                     | <a href="matlab: p=pwd();cd(fullfile(layoutDocRoot,'Examples')); minimizeexample; cd(p)">run</a> ]

                 )</p>

                 

                 

                 <h4>Create the layout with three panels</h4>

            <p>Open a new figure window and add three panels.</p>

            <example><pre style="background-color: #eeeeff; margin-left: 20px; margin-right: 20px"><font color="#000011"><a href="matlab:doc function"><code class="FUNCTION">function</code></a> minimizeexample()

width = 200;

pheightmin = 20;

pheightmax = 100;



<code class="COMMENT">% Create the window and main layout</code>

fig = <a href="matlab:doc figure"><code class="FUNCTION">figure</code></a>( <code class="STRING">'Name'</code>, <code class="STRING">'Collapsable GUI example'</code>, ...

              <code class="STRING">'NumberTitle'</code>, <code class="STRING">'off'</code>, ...

              <code class="STRING">'Toolbar'</code>, <code class="STRING">'none'</code>, ...

              <code class="STRING">'MenuBar'</code>, <code class="STRING">'none'</code> );

box = <a href="uix.VBox.html"><code class="FUNCTION">uix.VBox</code></a>( 'Parent', fig );



panel{1} = <a href="uix.BoxPanel.html"><code class="FUNCTION">uix.BoxPanel</code></a>( <code class="STRING">'Title'</code>, <code class="STRING">'Panel 1'</code>, <code class="STRING">'Parent'</code>, box );

panel{2} = <a href="uix.BoxPanel.html"><code class="FUNCTION">uix.BoxPanel</code></a>( <code class="STRING">'Title'</code>, <code class="STRING">'Panel 2'</code>, <code class="STRING">'Parent'</code>, box );

panel{3} = <a href="uix.BoxPanel.html"><code class="FUNCTION">uix.BoxPanel</code></a>( <code class="STRING">'Title'</code>, <code class="STRING">'Panel 3'</code>, <code class="STRING">'Parent'</code>, box );

<a href="matlab:doc set"><code class="FUNCTION">set</code></a>( box, 'Heights', pheightmax*ones(1,3) );



<code class="COMMENT">% Add some contents</code>.

<a href="matlab:doc uicontrol"><code class="FUNCTION">uicontrol</code></a>( <code class="STRING">'Style'</code>, <code class="STRING">'PushButton'</code>, <code class="STRING">'String'</code>, <code class="STRING">'Button 1'</code>, <code class="STRING">'Parent'</code>, panel{1} );

<a href="matlab:doc uicontrol"><code class="FUNCTION">uicontrol</code></a>( <code class="STRING">'Style'</code>, <code class="STRING">'PushButton'</code>, <code class="STRING">'String'</code>, <code class="STRING">'Button 2'</code>, <code class="STRING">'Parent'</code>, panel{2} );

<a href="matlab:doc uicontrol"><code class="FUNCTION">uicontrol</code></a>( <code class="STRING">'Style'</code>, <code class="STRING">'PushButton'</code>, <code class="STRING">'String'</code>, <code class="STRING">'Button 3'</code>, <code class="STRING">'Parent'</code>, panel{3} );



<code class="COMMENT">% Resize the window</code>

pos = <a href="matlab:doc get"><code class="FUNCTION">get</code></a>( fig, <code class="STRING">'Position'</code> );

<a href="matlab:doc set"><code class="FUNCTION">set</code></a>( fig, <code class="STRING">'Position'</code>, [pos(1,1:2),width,sum(box.Heights)] );</font></pre>

            <p style="background-color: #ddddee; margin-left: 20px; margin-right: 20px"><font color="#000022"><center><img src="Images/BoxPanelMinimizeExample1.png"/></center></font></p>

        </example>

        

            <h4>Add the minimize/maximize callback</h4>

            <p>We set each panel to call the same minimize/maximize function.

        This function is nested inside the main function so that it has access

    to the main function's variables. A better way to do this is to make the

main function into a class, but this nested-function approach is fine

for simple applications.</p>

            <p>Note that as soon as we set the "MinimizeFcn" property the minimize/maximize

                icon appears in the top-right of each panel. We use a cell-array to pass an

            extra argument, the panel number, to the minimize function. This extra argument appears after the usual

            <code>eventSource</code> and <code>eventData</code> arguments.</p>

            <example><pre style="background-color: #eeeeff; margin-left: 20px; margin-right: 20px"><font color="#000011"><code class="COMMENT">% Hook up the minimize callback</code>.

<a href="matlab:doc set"><code class="FUNCTION">set</code></a>( panel{1}, <code class="STRING">'MinimizeFcn'</code>, {@nMinimize, 1} );

<a href="matlab:doc set"><code class="FUNCTION">set</code></a>( panel{2}, <code class="STRING">'MinimizeFcn'</code>, {@nMinimize, 2} );

<a href="matlab:doc set"><code class="FUNCTION">set</code></a>( panel{3}, <code class="STRING">'MinimizeFcn'</code>, {@nMinimize, 3} );



<code class="COMMENT">%-------------------------------------------------------------------------%</code><br/> 

    <a href="matlab:doc function"><code class="FUNCTION">function</code></a> nMinimize( eventSource, eventData, whichpanel )

        <code class="COMMENT">% A panel has been maximized/minimized</code>

        s = <a href="matlab:doc get"><code class="FUNCTION">get</code></a>( box, <code class="STRING">'Heights'</code> );

        pos = <a href="matlab:doc get"><code class="FUNCTION">get</code></a>( fig, <code class="STRING">'Position'</code> );

        panel{whichpanel}.Minimized = ~panel{whichpanel}.Minimized;

        <a href="matlab:doc if"><code class="FUNCTION">if</code></a> panel{whichpanel}.Minimized

            s(whichpanel) = pheightmin;

        <a href="matlab:doc else"><code class="FUNCTION">else</code></a>

            s(whichpanel) = pheightmax;

        <a href="matlab:doc end"><code class="FUNCTION">end</code></a>&nbsp;

        <a href="matlab:doc set"><code class="FUNCTION">set</code></a>( box, <code class="STRING">'Heights'</code>, s );

        

        <code class="COMMENT">% Resize the figure, keeping the top stationary</code>

        delta_height = pos(1,4) - <a href="matlab:doc sum"><code class="FUNCTION">sum</code></a>( box.Heights );

        <a href="matlab:doc set"><code class="FUNCTION">set</code></a>( fig, <code class="STRING">'Position'</code>, pos(1,:) + [0 delta_height 0 -delta_height] );

    <a href="matlab:doc end"><code class="FUNCTION">end</code></a>&nbsp;<code class="COMMENT">% Minimize</code>&nbsp;



<a href="matlab:doc end"><code class="FUNCTION">end</code></a>&nbsp;<code class="COMMENT">% Main function</code></font></pre>

            <p style="background-color: #ddddee; margin-left: 20px; margin-right: 20px"><font color="#000022"><center><img src="Images/BoxPanelMinimizeExample2.png"/></center></font></p>

        </example>

        

    

            <h4>Click the minimize buttons</h4>

            <p>Minimizing the middle panel causes it to shrink to just its 

            title-bar and the window shrinks accordingly. The

    "Minimize" icon is replaced by a "Maximise" icon.</p>

            <example><p style="background-color: #ddddee; margin-left: 20px; margin-right: 20px"><font color="#000022"><center><img src="Images/BoxPanelMinimizeExample3.png"/></center></font></p></example>

            <p> Re-maximizing the panel would

            cause it to re-appear in full and the window to grow again.</p>



        

      

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