Massive UI revamping (v7): unify top bar size to 22px and correct the getAdditionaHeight methods. Part of #1209

sdrgui/channel/channelgui.h

@@ -95,7 +95,7 @@ protected:
     void mouseMoveEvent(QMouseEvent* event) override;
     void resetContextMenuType() { m_contextMenuType = ContextMenuNone; }
     void updateIndexLabel();
-    int getAdditionalHeight() const { return 25 + 22; }
+    int getAdditionalHeight() const { return 22 + 22; }
     void setHighlighted(bool highlighted);
 
     DeviceType m_deviceType;

sdrgui/device/devicegui.cpp

@@ -54,6 +54,7 @@ DeviceGUI::DeviceGUI(QWidget *parent) :
     m_indexLabel->setToolTip("Device type and set index");
 
     m_settingsButton = new QPushButton();
+    m_settingsButton->setFixedSize(20, 20);
     QIcon settingsIcon(":/gear.png");
     m_settingsButton->setIcon(settingsIcon);
     m_settingsButton->setToolTip("Common settings");

sdrgui/device/devicegui.h

@@ -83,7 +83,7 @@ protected:
     void mouseReleaseEvent(QMouseEvent* event) override;
     void mouseMoveEvent(QMouseEvent* event) override;
     void resetContextMenuType() { m_contextMenuType = ContextMenuNone; }
-    int getAdditionalHeight() const { return 25 + 22; }
+    int getAdditionalHeight() const { return 22 + 22; }
 
     DeviceType m_deviceType;
     int m_deviceSetIndex;

sdrgui/feature/featuregui.h

@@ -72,7 +72,7 @@ protected:
     void mouseReleaseEvent(QMouseEvent* event) override;
     void mouseMoveEvent(QMouseEvent* event) override;
     void resetContextMenuType() { m_contextMenuType = ContextMenuNone; }
-    int getAdditionalHeight() const { return 25 + 22; }
+    int getAdditionalHeight() const { return 22 + 22; }
 
     int m_featureIndex;
     QString m_helpURL;

sdrgui/mainspectrum/mainspectrumgui.cpp

@@ -97,7 +97,7 @@ MainSpectrumGUI::MainSpectrumGUI(GLSpectrum *spectrum, GLSpectrumGUI *spectrumGU
     // m_statusLabel->setToolTip("Spectrum status");
 
     m_layouts = new QVBoxLayout();
-    m_layouts->setContentsMargins(m_resizer.m_gripSize, 4, m_resizer.m_gripSize, 4);
+    m_layouts->setContentsMargins(m_resizer.m_gripSize, m_resizer.m_gripSize, m_resizer.m_gripSize, m_resizer.m_gripSize);
     m_layouts->setSpacing(0);
 
     m_topLayout = new QHBoxLayout();