Device GUIs: Constain window size via minimumSize/maximumSize, rather than handling resizeEvent. Add maximum button. Hide size buttons when window size is fixed

plugins/samplesink/hackrfoutput/hackrfoutputgui.cpp

@@ -17,7 +17,6 @@
 
 #include <QDebug>
 #include <QMessageBox>
-#include <QResizeEvent>
 
 #include <libhackrf/hackrf.h>
 
@@ -49,7 +48,7 @@ HackRFOutputGui::HackRFOutputGui(DeviceUISet *deviceUISet, QWidget* parent) :
     m_deviceSampleSink = (HackRFOutput*) m_deviceUISet->m_deviceAPI->getSampleSink();
 
     ui->setupUi(getContents());
-    setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+    sizeToContents();
     getContents()->setStyleSheet("#HackRFOutputGui { background-color: rgb(64, 64, 64); }");
     m_helpURL = "plugins/samplesink/hackrfoutput/readme.md";
 	ui->centerFrequency->setColorMapper(ColorMapper(ColorMapper::GrayGold));
@@ -113,12 +112,6 @@ bool HackRFOutputGui::deserialize(const QByteArray& data)
 	}
 }
 
-void HackRFOutputGui::resizeEvent(QResizeEvent* size)
-{
-    adjustSize();
-    size->accept();
-}
-
 void HackRFOutputGui::blockApplySettings(bool block)
 {
     m_doApplySettings = !block;

plugins/samplesink/hackrfoutput/hackrfoutputgui.h

@@ -56,9 +56,6 @@ public:
 	bool deserialize(const QByteArray& data);
 	virtual MessageQueue *getInputMessageQueue() { return &m_inputMessageQueue; }
 
-protected:
-    void resizeEvent(QResizeEvent* size);
-
 private:
 	Ui::HackRFOutputGui* ui;