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

plugins/samplesource/audioinput/audioinputgui.cpp

@@ -18,7 +18,6 @@
 
 #include <QMessageBox>
 #include <QFileDialog>
-#include <QResizeEvent>
 
 #include "ui_audioinputgui.h"
 #include "gui/colormapper.h"
@@ -44,7 +43,7 @@ AudioInputGui::AudioInputGui(DeviceUISet *deviceUISet, QWidget* parent) :
     m_sampleSource = (AudioInput*) m_deviceUISet->m_deviceAPI->getSampleSource();
 
     ui->setupUi(getContents());
-    setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+    sizeToContents();
     getContents()->setStyleSheet("#AudioInputGui { background-color: rgb(64, 64, 64); }");
     m_helpURL = "plugins/samplesource/audioinput/readme.md";
 
@@ -98,12 +97,6 @@ bool AudioInputGui::deserialize(const QByteArray& data)
     }
 }
 
-void AudioInputGui::resizeEvent(QResizeEvent* size)
-{
-    adjustSize();
-    size->accept();
-}
-
 bool AudioInputGui::handleMessage(const Message& message)
 {
     if (AudioInput::MsgConfigureAudioInput::match(message))

plugins/samplesource/audioinput/audioinputgui.h

@@ -47,9 +47,6 @@ public:
     bool deserialize(const QByteArray& data);
     virtual MessageQueue *getInputMessageQueue() { return &m_inputMessageQueue; }
 
-protected:
-    void resizeEvent(QResizeEvent* size);
-
 private:
     Ui::AudioInputGui* ui;