fgdata/gui/dialogs/instruments.xml

<?xml version="1.0"?>
<PropertyList>
  <name>instruments</name>
  <modal>false</modal>
  <layout>vbox</layout>

  <nasal>
    <open><![CDATA[
      var update = func(){
        setprop("/instrumentation/altimeter/setting-hpa-formatted", int(getprop("/instrumentation/altimeter/setting-hpa")));
        setprop("/instrumentation/altimeter/setting-inhg-formatted", int(getprop("/instrumentation/altimeter/setting-inhg")*100.0)/100.0);
      }
      var hpaListener = setlistener("/instrumentation/altimeter/setting-hpa", update);
      var inhgListener = setlistener("/instrumentation/altimeter/setting-inhg", update);
      update();
    ]]></open>

    <close><![CDATA[
      removelistener(hpaListener);
      removelistener(inhgListener);
    ]]></close>
  </nasal>

  <group>
    <layout>hbox</layout>
    <empty><stretch>1</stretch></empty>

    <text>
      <label>Instrument Settings</label>
    </text>

    <empty><stretch>1</stretch></empty>

    <button>
      <pref-width>16</pref-width>
      <pref-height>16</pref-height>
      <legend></legend>
      <keynum>27</keynum>
      <border>2</border>
      <binding>
        <command>dialog-close</command>
      </binding>
    </button>
  </group>

  <hrule/>

  <group>
    <layout>table</layout>
    <default-padding>5</default-padding>

    <text>
      <row>0</row>
      <col>0</col>
      <halign>right</halign>
      <label>  QNH Setting:</label>
    </text>

    <group>
      <row>0</row>
      <col>1</col>
      <layout>hbox</layout>
      <default-padding>0</default-padding>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&lt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/altimeter/setting-hpa</property>
          <step type="double">-1</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>
    </group>

    <input>
      <row>0</row>
      <col>3</col>
      <width>75</width>
      <height>25</height>
      <live>true</live>
      <property>/instrumentation/altimeter/setting-hpa-formatted</property>
      <binding>
        <command>dialog-apply</command>
      </binding>
    </input>

    <text>
      <row>0</row>
      <col>4</col>
      <padding>0</padding>
      <halign>left</halign>
      <label>hPa</label>
    </text>

    <group>
      <layout>hbox</layout>
      <row>0</row>
      <col>5</col>
      <default-padding>0</default-padding>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&gt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/altimeter/setting-hpa</property>
          <step type="double">1</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>
    </group>

    <text>
      <row>1</row>
      <col>0</col>
      <halign>right</halign>
      <label>ALT Setting:</label>
    </text>

    <group>
      <row>1</row>
      <col>1</col>
      <layout>hbox</layout>
      <default-padding>0</default-padding>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&lt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/altimeter/setting-inhg</property>
          <step type="double">-0.01</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&lt;&lt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/altimeter/setting-inhg</property>
          <step type="double">-0.10</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>
    </group>

    <input>
      <row>1</row>
      <col>3</col>
      <width>75</width>
      <height>25</height>
      <live>true</live>
      <property>/instrumentation/altimeter/setting-inhg-formatted</property>
      <binding>
        <command>dialog-apply</command>
      </binding>
    </input>

    <text>
      <row>1</row>
      <col>4</col>
      <padding>0</padding>
      <halign>left</halign>
      <label>inHg</label>
    </text>

    <group>
      <layout>hbox</layout>
      <row>1</row>
      <col>5</col>
      <default-padding>0</default-padding>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&gt;&gt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/altimeter/setting-inhg</property>
          <step type="double">0.10</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>

      <button>
        <row>1</row>
        <col>6</col>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&gt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/altimeter/setting-inhg</property>
          <step type="double">0.01</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>

      <!-- only for a gap -->
      <text>
        <label>  </label>
      </text>

    </group>

    <text>
      <row>2</row>
      <col>0</col>
      <halign>right</halign>
      <label>HI Offset:</label>
    </text>

    <group>
      <layout>hbox</layout>
      <default-padding>0</default-padding>
      <row>2</row>
      <col>1</col>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&lt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/heading-indicator/offset-deg</property>
          <step type="double">-1.0</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&lt;&lt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/heading-indicator/offset-deg</property>
          <step type="double">-10.0</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>
    </group>

    <input>
      <row>2</row>
      <col>3</col>
      <width>75</width>
      <height>25</height>
      <live>true</live>
      <property>/instrumentation/heading-indicator/offset-deg</property>
      <binding>
        <command>dialog-apply</command>
      </binding>
    </input>

    <text>
      <row>2</row>
      <col>4</col>
      <padding>0</padding>
      <halign>left</halign>
      <label>deg</label>
    </text>

    <group>
      <layout>hbox</layout>
      <default-padding>0</default-padding>
      <row>2</row>
      <col>5</col>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&gt;&gt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/heading-indicator/offset-deg</property>
          <step type="double">10.0</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>

      <button>
        <width>35</width>
        <height>26</height>
        <border>1</border>
        <legend>&gt;</legend>
        <binding>
          <command>property-adjust</command>
          <property>/instrumentation/heading-indicator/offset-deg</property>
          <step type="double">1.0</step>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>

      <!-- only for a gap -->
      <text>
        <label>  </label>
      </text>

    </group>
  </group>

  <hrule/>

  <group>
    <layout>hbox</layout>

    <text>
      <halign>right</halign>
      <label>Local magnetic variation:</label>
    </text>

    <text>
      <halign>left</halign>
      <label>12345678</label>
      <format>%.1f deg</format>
      <live>true</live>
      <property>/environment/magnetic-variation-deg</property>
    </text>

  </group>

  <hrule/>

  <group>
    <layout>hbox</layout>
    <default-padding>5</default-padding>

    <empty><stretch>1</stretch></empty>
    
    <text>
      <halign>right</halign>
      <label>Instrument lighting:</label>
    </text>

    <input>
      <width>50</width>
      <height>25</height>
      <live>true</live>
      <property>/controls/lighting/instruments-norm</property>
      <binding>
        <command>dialog-apply</command>
      </binding>
    </input>
    
    <empty><stretch>0</stretch></empty>
    
    <!-- +/- buttons, one above the other. -->
    <group>
      <layout>vbox</layout>
      <default-padding>0</default-padding>
      <button>
        <pref-width>20</pref-width>
        <pref-height>20</pref-height>
        <legend>+</legend>
        <binding>
          <command>property-adjust</command>
          <property>/controls/lighting/instruments-norm</property>
          <step>+0.1</step>
          <max>1</max>
        </binding>
        <binding>
          <command>property-adjust</command>
          <property>/controls/lighting/panel-norm</property>
          <step>+0.1</step>
          <max>1</max>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>
      <button>
        <pref-width>20</pref-width>
        <pref-height>20</pref-height>
        <legend>-</legend>
        <binding>
          <command>property-adjust</command>
          <property>/controls/lighting/instruments-norm</property>
          <step>-0.1</step>
          <min>0</min>
        </binding>
        <binding>
          <command>property-adjust</command>
          <property>/controls/lighting/panel-norm</property>
          <step>-0.1</step>
          <min>0</min>
        </binding>
        <binding>
          <command>dialog-update</command>
        </binding>
      </button>
    </group>
    
    <empty><stretch>1</stretch></empty>

  </group>

  <hrule/>

  <button>
    <legend>Close</legend>
    <default>true</default>
    <key>Esc</key>
    <binding>
      <command>dialog-close</command>
    </binding>
  </button>

</PropertyList>