Removed the excessive margin in instruments' GUI (#5129) (#5171)

* Removed the excessive margin in instruments' GUI (#5129)

* Reduced the font size for "master pitch" label.
* Reduced the layout spacing for MIDI Input and MIDI Output groups
* Shortened labels, so that the LcdSpinBoxes are spaced evenly

* Added translator's comments

* Whitespace fix

src/gui/widgets/InstrumentMidiIOView.cpp

@@ -53,18 +53,22 @@ InstrumentMidiIOView::InstrumentMidiIOView( QWidget* parent ) :
 
  QHBoxLayout* midiInputLayout = new QHBoxLayout( m_midiInputGroupBox );
  midiInputLayout->setContentsMargins( 8, 18, 8, 8 );
- midiInputLayout->setSpacing( 6 );
+ midiInputLayout->setSpacing( 4 );
 
  m_inputChannelSpinBox = new LcdSpinBox( 2, m_midiInputGroupBox );
  m_inputChannelSpinBox->addTextForValue( 0, "--" );
- m_inputChannelSpinBox->setLabel( tr( "CHANNEL" ) );
+ /*: This string must be be short, its width must be less than
+ * width of LCD spin-box of two digits */
+ m_inputChannelSpinBox->setLabel( tr( "CHAN" ) );
  m_inputChannelSpinBox->setEnabled( false );
  midiInputLayout->addWidget( m_inputChannelSpinBox );
 
  m_fixedInputVelocitySpinBox = new LcdSpinBox( 3, m_midiInputGroupBox );
  m_fixedInputVelocitySpinBox->setDisplayOffset( 1 );
  m_fixedInputVelocitySpinBox->addTextForValue( 0, "---" );
- m_fixedInputVelocitySpinBox->setLabel( tr( "VELOCITY" ) );
+ /*: This string must be be short, its width must be less than
+ * width of LCD spin-box of three digits */
+ m_fixedInputVelocitySpinBox->setLabel( tr( "VELOC" ) );
  m_fixedInputVelocitySpinBox->setEnabled( false );
  midiInputLayout->addWidget( m_fixedInputVelocitySpinBox );
  midiInputLayout->addStretch();
@@ -81,28 +85,37 @@ InstrumentMidiIOView::InstrumentMidiIOView( QWidget* parent ) :
 
  QHBoxLayout* midiOutputLayout = new QHBoxLayout( m_midiOutputGroupBox );
  midiOutputLayout->setContentsMargins( 8, 18, 8, 8 );
- midiOutputLayout->setSpacing( 6 );
+ midiOutputLayout->setSpacing( 4 );
 
  m_outputChannelSpinBox = new LcdSpinBox( 2, m_midiOutputGroupBox );
  m_outputChannelSpinBox->addTextForValue( 0, "--" );
- m_outputChannelSpinBox->setLabel( tr( "CHANNEL" ) );
+ /*: This string must be be short, its width must be less than
+ * width of LCD spin-box of two digits */
+ m_outputChannelSpinBox->setLabel( tr( "CHAN" ) );
+ m_outputChannelSpinBox->setEnabled( false );
  midiOutputLayout->addWidget( m_outputChannelSpinBox );
 
  m_fixedOutputVelocitySpinBox = new LcdSpinBox( 3, m_midiOutputGroupBox );
  m_fixedOutputVelocitySpinBox->setDisplayOffset( 1 );
  m_fixedOutputVelocitySpinBox->addTextForValue( 0, "---" );
- m_fixedOutputVelocitySpinBox->setLabel( tr( "VELOCITY" ) );
+ /*: This string must be be short, its width must be less than
+ * width of LCD spin-box of three digits */
+ m_fixedOutputVelocitySpinBox->setLabel( tr( "VELOC" ) );
  m_fixedOutputVelocitySpinBox->setEnabled( false );
  midiOutputLayout->addWidget( m_fixedOutputVelocitySpinBox );
 
  m_outputProgramSpinBox = new LcdSpinBox( 3, m_midiOutputGroupBox );
- m_outputProgramSpinBox->setLabel( tr( "PROGRAM" ) );
+ /*: This string must be be short, its width must be less than the
+ * width of LCD spin-box of three digits */
+ m_outputProgramSpinBox->setLabel( tr( "PROG" ) );
  m_outputProgramSpinBox->setEnabled( false );
  midiOutputLayout->addWidget( m_outputProgramSpinBox );
 
  m_fixedOutputNoteSpinBox = new LcdSpinBox( 3, m_midiOutputGroupBox );
  m_fixedOutputNoteSpinBox->setDisplayOffset( 1 );
  m_fixedOutputNoteSpinBox->addTextForValue( 0, "---" );
+ /*: This string must be be short, its width must be less than
+ * width of LCD spin-box of three digits */
  m_fixedOutputNoteSpinBox->setLabel( tr( "NOTE" ) );
  m_fixedOutputNoteSpinBox->setEnabled( false );
  midiOutputLayout->addWidget( m_fixedOutputNoteSpinBox );
@@ -211,6 +224,7 @@ InstrumentMiscView::InstrumentMiscView(InstrumentTrack *it, QWidget *parent) :
  QHBoxLayout* masterPitchLayout = new QHBoxLayout( m_pitchGroupBox );
  masterPitchLayout->setContentsMargins( 8, 18, 8, 8 );
  QLabel *tlabel = new QLabel(tr( "Enables the use of master pitch" ) );
+ tlabel->setFont( pointSize<8>( tlabel->font() ) );
  m_pitchGroupBox->setModel( &it->m_useMasterPitchModel );
  masterPitchLayout->addWidget( tlabel );
  layout->addStretch();