Fix hardcoded fonts scaling issues (#7493)

* changed font sizes to better values

* rename gui_templates.h to FontHelper.h

* replace hardcoded values with constants

* make knob labels use small font

* code review from michael

* more consolidation

* Fix text problem in Vectorscope

Fix a problem with cutoff text in Vectorscope. During the constructor
call of `LedCheckBox` the method `LedCheckBox::onTextUpdated` is
triggered which sets a fixed size that fits the pixmap and the text.
After instantiating the two instances in `VecControlsDialog` the
constructor then set a minimum size which overrode the fixed size that
was previously set. This then led to text that was cutoff.

---------

Co-authored-by: Michael Gregorius <michael.gregorius.git@arcor.de>

plugins/AudioFileProcessor/AudioFileProcessorView.cpp

@@ -31,7 +31,7 @@
 
 #include "ComboBox.h"
 #include "DataFile.h"
-#include "gui_templates.h"
+#include "FontHelper.h"
 #include "PixmapButton.h"
 #include "SampleLoader.h"
 #include "Song.h"
@@ -227,7 +227,7 @@ void AudioFileProcessorView::paintEvent(QPaintEvent*)
 
 	int idx = a->sample().sampleFile().length();
 
-	p.setFont(adjustedToPixelSize(font(), 8));
+	p.setFont(adjustedToPixelSize(font(), SMALL_FONT_SIZE));
 
 	QFontMetrics fm(p.font());
 

plugins/AudioFileProcessor/AudioFileProcessorWaveView.cpp

@@ -25,7 +25,7 @@
 #include "AudioFileProcessorWaveView.h"
 
 #include "ConfigManager.h"
-#include "gui_templates.h"
+#include "FontHelper.h"
 #include "SampleWaveform.h"
 
 #include <QPainter>
@@ -279,7 +279,7 @@ void AudioFileProcessorWaveView::paintEvent(QPaintEvent * pe)
 	p.fillRect(s_padding, s_padding, m_graph.width(), 14, g);
 
 	p.setPen(QColor(255, 255, 255));
-	p.setFont(adjustedToPixelSize(font(), 8));
+	p.setFont(adjustedToPixelSize(font(), SMALL_FONT_SIZE));
 
 	QString length_text;
 	const int length = m_sample->sampleDuration().count();

plugins/CarlaBase/Carla.cpp

@@ -32,7 +32,7 @@
 #include "Knob.h"
 #include "MidiEventToByteSeq.h"
 #include "MainWindow.h"
-#include "gui_templates.h"
+#include "FontHelper.h"
 #include "Song.h"
 
 #include <QApplication>
@@ -627,7 +627,7 @@ CarlaInstrumentView::CarlaInstrumentView(CarlaInstrument* const instrument, QWid
     m_toggleUIButton->setCheckable( true );
     m_toggleUIButton->setChecked( false );
     m_toggleUIButton->setIcon( embed::getIconPixmap( "zoom" ) );
-    m_toggleUIButton->setFont(adjustedToPixelSize(m_toggleUIButton->font(), 8));
+    m_toggleUIButton->setFont(adjustedToPixelSize(m_toggleUIButton->font(), SMALL_FONT_SIZE));
     connect( m_toggleUIButton, SIGNAL( clicked(bool) ), this, SLOT( toggleUI( bool ) ) );
 
     m_toggleUIButton->setToolTip(
@@ -637,7 +637,7 @@ CarlaInstrumentView::CarlaInstrumentView(CarlaInstrument* const instrument, QWid
     m_toggleParamsWindowButton = new QPushButton(tr("Params"), this);
     m_toggleParamsWindowButton->setIcon(embed::getIconPixmap("controller"));
     m_toggleParamsWindowButton->setCheckable(true);
-    m_toggleParamsWindowButton->setFont(adjustedToPixelSize(m_toggleParamsWindowButton->font(), 8));
+    m_toggleParamsWindowButton->setFont(adjustedToPixelSize(m_toggleParamsWindowButton->font(), SMALL_FONT_SIZE));
 #if CARLA_VERSION_HEX < CARLA_MIN_PARAM_VERSION
     m_toggleParamsWindowButton->setEnabled(false);
     m_toggleParamsWindowButton->setToolTip(tr("Available from Carla version 2.1 and up."));

plugins/Eq/EqCurve.cpp

@@ -30,6 +30,7 @@
 #include "AudioEngine.h"
 #include "embed.h"
 #include "Engine.h"
+#include "FontHelper.h"
 #include "lmms_constants.h"
 #include "lmms_math.h"
 
@@ -148,9 +149,7 @@ void EqHandle::paint( QPainter *painter, const QStyleOptionGraphicsItem *option,
 			res = tr( "BW: " ) +  QString::number( getResonance() );
 		}
 
-		QFont painterFont = painter->font();
-		painterFont.setPointSizeF( painterFont.pointSizeF() * 0.7 );
-		painter->setFont( painterFont );
+		painter->setFont(adjustedToPixelSize(painter->font(), SMALL_FONT_SIZE));
 		painter->setPen( Qt::black );
 		painter->drawRect( textRect );
 		painter->fillRect( textRect, QBrush( QColor( 6, 106, 43, 180 ) ) );

plugins/GranularPitchShifter/GranularPitchShifterControlDialog.cpp

@@ -28,7 +28,6 @@
 #include "LcdFloatSpinBox.h"
 #include "Knob.h"
 #include "GuiApplication.h"
-#include "gui_templates.h"
 #include "PixmapButton.h"
 
 

plugins/Patman/Patman.cpp

@@ -33,7 +33,7 @@
 #include "endian_handling.h"
 #include "Engine.h"
 #include "FileDialog.h"
-#include "gui_templates.h"
+#include "FontHelper.h"
 #include "InstrumentTrack.h"
 #include "NotePlayHandle.h"
 #include "PathUtil.h"
@@ -545,7 +545,7 @@ void PatmanView::updateFilename()
  	m_displayFilename = "";
 	int idx = m_pi->m_patchFile.length();
 
-	QFontMetrics fm(adjustedToPixelSize(font(), 8));
+	QFontMetrics fm(adjustedToPixelSize(font(), SMALL_FONT_SIZE));
 
 	// simple algorithm for creating a text from the filename that
 	// matches in the white rectangle
@@ -615,7 +615,7 @@ void PatmanView::paintEvent( QPaintEvent * )
 {
 	QPainter p( this );
 
-	p.setFont(adjustedToPixelSize(font() ,8));
+	p.setFont(adjustedToPixelSize(font(), SMALL_FONT_SIZE));
 	p.drawText( 8, 116, 235, 16,
 			Qt::AlignLeft | Qt::TextSingleLine | Qt::AlignVCenter,
 			m_displayFilename );

plugins/TapTempo/TapTempoView.cpp

@@ -35,6 +35,7 @@
 #include <QWidget>
 
 #include "Engine.h"
+#include "FontHelper.h"
 #include "SamplePlayHandle.h"
 #include "Song.h"
 #include "TapTempo.h"
@@ -47,11 +48,10 @@ TapTempoView::TapTempoView(TapTempo* plugin)
 	setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
 
 	auto font = QFont();
-	font.setPointSize(24);
 
 	m_tapButton = new QPushButton();
 	m_tapButton->setFixedSize(200, 200);
-	m_tapButton->setFont(font);
+	m_tapButton->setFont(adjustedToPixelSize(font, 32));
 	m_tapButton->setText(tr("0"));
 
 	auto precisionCheckBox = new QCheckBox(tr("Precision"));

plugins/Vectorscope/VecControlsDialog.cpp

@@ -64,7 +64,6 @@ VecControlsDialog::VecControlsDialog(VecControls *controls) :
 	auto highQualityButton = new LedCheckBox(tr("HQ"), this);
 	highQualityButton->setToolTip(tr("Double the resolution and simulate continuous analog-like trace."));
 	highQualityButton->setCheckable(true);
-	highQualityButton->setMinimumSize(70, 12);
 	highQualityButton->setModel(&controls->m_highQualityModel);
 	switch_layout->addWidget(highQualityButton);
 
@@ -72,7 +71,6 @@ VecControlsDialog::VecControlsDialog(VecControls *controls) :
 	auto logarithmicButton = new LedCheckBox(tr("Log. scale"), this);
 	logarithmicButton->setToolTip(tr("Display amplitude on logarithmic scale to better see small values."));
 	logarithmicButton->setCheckable(true);
-	logarithmicButton->setMinimumSize(70, 12);
 	logarithmicButton->setModel(&controls->m_logarithmicModel);
 	switch_layout->addWidget(logarithmicButton);
 

plugins/Vectorscope/VectorView.cpp

@@ -30,6 +30,7 @@
 
 #include "ColorChooser.h"
 #include "GuiApplication.h"
+#include "FontHelper.h"
 #include "MainWindow.h"
 #include "VecControls.h"
 
@@ -89,7 +90,6 @@ void VectorView::paintEvent(QPaintEvent *event)
 	painter.setRenderHint(QPainter::Antialiasing, true);
 
 	QFont normalFont, boldFont;
-	boldFont.setPixelSize(26);
 	boldFont.setBold(true);
 	const int labelWidth = 26;
 	const int labelHeight = 26;
@@ -264,7 +264,7 @@ void VectorView::paintEvent(QPaintEvent *event)
 	painter.drawLine(QPointF(centerX, centerY), QPointF(displayRight - gridCorner, displayTop + gridCorner));
 
 	painter.setPen(QPen(m_controls->m_colorLabels, 1, Qt::SolidLine, Qt::RoundCap, Qt::BevelJoin));
-	painter.setFont(boldFont);
+	painter.setFont(adjustedToPixelSize(boldFont, 26));
 	painter.drawText(displayLeft + margin, displayTop,
 					 labelWidth, labelHeight, Qt::AlignLeft | Qt::AlignTop | Qt::TextDontClip,
 					 QString("L"));

plugins/Vestige/Vestige.cpp

@@ -46,7 +46,7 @@
 #include "Engine.h"
 #include "FileDialog.h"
 #include "GuiApplication.h"
-#include "gui_templates.h"
+#include "FontHelper.h"
 #include "InstrumentPlayHandle.h"
 #include "InstrumentTrack.h"
 #include "LocaleHelper.h"
@@ -583,12 +583,10 @@ VestigeInstrumentView::VestigeInstrumentView( Instrument * _instrument,
 
 	m_selPresetButton->setMenu(menu);
 
-	constexpr int buttonFontSize = 12;
-
 	m_toggleGUIButton = new QPushButton( tr( "Show/hide GUI" ), this );
 	m_toggleGUIButton->setGeometry( 20, 130, 200, 24 );
 	m_toggleGUIButton->setIcon( embed::getIconPixmap( "zoom" ) );
-	m_toggleGUIButton->setFont(adjustedToPixelSize(m_toggleGUIButton->font(), buttonFontSize));
+	m_toggleGUIButton->setFont(adjustedToPixelSize(m_toggleGUIButton->font(), LARGE_FONT_SIZE));
 	connect( m_toggleGUIButton, SIGNAL( clicked() ), this,
 							SLOT( toggleGUI() ) );
 
@@ -597,7 +595,7 @@ VestigeInstrumentView::VestigeInstrumentView( Instrument * _instrument,
 		this);
 	note_off_all_btn->setGeometry( 20, 160, 200, 24 );
 	note_off_all_btn->setIcon( embed::getIconPixmap( "stop" ) );
-	note_off_all_btn->setFont(adjustedToPixelSize(note_off_all_btn->font(), buttonFontSize));
+	note_off_all_btn->setFont(adjustedToPixelSize(note_off_all_btn->font(), LARGE_FONT_SIZE));
 	connect( note_off_all_btn, SIGNAL( clicked() ), this,
 							SLOT( noteOffAll() ) );
 
@@ -882,7 +880,7 @@ void VestigeInstrumentView::paintEvent( QPaintEvent * )
 				tr( "No VST plugin loaded" );
 	QFont f = p.font();
 	f.setBold( true );
-	p.setFont(adjustedToPixelSize(f, 10));
+	p.setFont(adjustedToPixelSize(f, DEFAULT_FONT_SIZE));
 	p.setPen( QColor( 255, 255, 255 ) );
 	p.drawText( 10, 100, plugin_name );
 
@@ -894,7 +892,7 @@ void VestigeInstrumentView::paintEvent( QPaintEvent * )
 	{
 		p.setPen( QColor( 0, 0, 0 ) );
 		f.setBold( false );
-		p.setFont(adjustedToPixelSize(f, 8));
+		p.setFont(adjustedToPixelSize(f, SMALL_FONT_SIZE));
 		p.drawText( 10, 114, tr( "by " ) +
 					m_vi->m_plugin->vendorString() );
 		p.setPen( QColor( 255, 255, 255 ) );

plugins/VstEffect/VstEffectControlDialog.cpp

@@ -33,7 +33,7 @@
 #include "PixmapButton.h"
 #include "embed.h"
 
-#include "gui_templates.h"
+#include "FontHelper.h"
 #include <QToolBar>
 #include <QLabel>
 
@@ -246,7 +246,7 @@ VstEffectControlDialog::VstEffectControlDialog( VstEffectControls * _ctl ) :
 		tb->addWidget(space1);
 
 		tbLabel = new QLabel( tr( "Effect by: " ), this );
-		tbLabel->setFont(adjustedToPixelSize(f, 7));
+		tbLabel->setFont(adjustedToPixelSize(f, SMALL_FONT_SIZE));
 		tbLabel->setTextFormat(Qt::RichText);
 		tbLabel->setAlignment( Qt::AlignTop | Qt::AlignLeft );
 		tb->addWidget( tbLabel );

plugins/ZynAddSubFx/ZynAddSubFx.cpp

@@ -48,6 +48,7 @@
 #include "Clipboard.h"
 
 #include "embed.h"
+#include "FontHelper.h"
 #include "plugin_export.h"
 
 namespace lmms
@@ -546,8 +547,7 @@ ZynAddSubFxView::ZynAddSubFxView( Instrument * _instrument, QWidget * _parent )
 	m_toggleUIButton->setChecked( false );
 	m_toggleUIButton->setIcon( embed::getIconPixmap( "zoom" ) );
 	QFont f = m_toggleUIButton->font();
-	f.setPointSizeF(12);
-	m_toggleUIButton->setFont(f);
+	m_toggleUIButton->setFont(adjustedToPixelSize(f, DEFAULT_FONT_SIZE));
 
 	connect( m_toggleUIButton, SIGNAL( toggled( bool ) ), this,
 							SLOT( toggleUI() ) );