Added one shot trigger option

include-gpl/dsp/scopevis.h

@@ -22,6 +22,7 @@ public:
 	ScopeVis(GLScope* glScope = NULL);
 
 	void configure(MessageQueue* msgQueue, TriggerChannel triggerChannel, Real triggerLevel, bool triggerPositiveEdge);
+	void setOneShot(bool oneShot);
 
 	void feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool positiveOnly);
 	void start();
@@ -72,6 +73,7 @@ private:
 	TriggerChannel m_triggerChannel;
 	Real m_triggerLevel;
 	bool m_triggerPositiveEdge;
+	bool m_triggerOneShot;
 	bool m_armed;
 	int m_sampleRate;
 

include-gpl/gui/glscopegui.h

@@ -79,6 +79,7 @@ private slots:
 	void on_trigMode_currentIndexChanged(int index);
 	void on_slopePos_clicked();
 	void on_slopeNeg_clicked();
+	void on_oneShot_clicked();
 	void on_trigLevel_valueChanged(int value);
 };
 

sdrbase/dsp/scopevis.cpp

@@ -16,6 +16,7 @@ ScopeVis::ScopeVis(GLScope* glScope) :
 	m_triggerChannel(TriggerFreeRun),
 	m_triggerLevel(0.0),
 	m_triggerPositiveEdge(true),
+	m_triggerOneShot(false),
 	m_armed(false),
 	m_sampleRate(0)
 {
@@ -49,6 +50,12 @@ void ScopeVis::feed(SampleVector::const_iterator begin, SampleVector::const_iter
 		}
 		else
 		{
+			if(m_triggerState == WaitForReset)
+			{
+				if (!m_triggerOneShot) {
+					m_triggerState = Untriggered;
+				}
+			}
 			if(m_triggerState == Untriggered)
 			{
 				while(begin < end)
@@ -80,7 +87,11 @@ void ScopeVis::feed(SampleVector::const_iterator begin, SampleVector::const_iter
 				if(m_fill >= m_trace.size()) {
 					m_glScope->newTrace(m_trace, m_sampleRate);
 					m_fill = 0;
-					m_triggerState = Untriggered;
+					if (m_triggerOneShot) {
+						m_triggerState = WaitForReset;
+					} else {
+						m_triggerState = Untriggered;
+					}
 				}
 			}
 		}
@@ -168,3 +179,8 @@ bool ScopeVis::triggerCondition(SampleVector::const_iterator& it)
 		return false;
 	}
 }
+
+void ScopeVis::setOneShot(bool oneShot)
+{
+	m_triggerOneShot = oneShot;
+}

sdrbase/gui/glscopegui.cpp

@@ -426,6 +426,11 @@ void GLScopeGUI::on_slopeNeg_clicked()
 	applyTriggerSettings();
 }
 
+void GLScopeGUI::on_oneShot_clicked()
+{
+	m_scopeVis->setOneShot(ui->oneShot->isChecked());
+}
+
 bool GLScopeGUI::handleMessage(Message* cmd)
 {
 	return false;

sdrbase/gui/glscopegui.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>807</width>
-    <height>67</height>
+    <height>69</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -625,6 +625,32 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QToolButton" name="oneShot">
+         <property name="toolTip">
+          <string>One shot</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../resources/res.qrc">
+           <normaloff>:/display1_w.png</normaloff>:/display1_w.png</iconset>
+         </property>
+         <property name="iconSize">
+          <size>
+           <width>16</width>
+           <height>16</height>
+          </size>
+         </property>
+         <property name="checkable">
+          <bool>true</bool>
+         </property>
+         <property name="autoRaise">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
       </layout>
      </item>
      <item>