From a7bd77b6bb0b3306a7c79089e970e091a0be2e9b Mon Sep 17 00:00:00 2001
From: ronso0 <ronso0@mixxx.org>
Date: Thu, 6 Feb 2025 14:05:52 +0100
Subject: [PATCH] --- trace / debug

---
 src/engine/enginemixer.cpp              | 16 ++++++++++++++
 src/preferences/dialog/dlgprefmixer.cpp | 28 +++++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/src/engine/enginemixer.cpp b/src/engine/enginemixer.cpp
index 737ed068b4d..f16d4994a8d 100644
--- a/src/engine/enginemixer.cpp
+++ b/src/engine/enginemixer.cpp
@@ -208,6 +208,22 @@ EngineMixer::EngineMixer(UserSettingsPointer pConfig,
     m_pBoothEnabled->setReadOnly();
     m_pHeadphoneEnabled->setReadOnly();
 
+    connect(m_pXFaderCurve.get(),
+            &ControlObject::valueChanged,
+            this,
+            [](double value) {
+                qWarning() << "     .";
+                qWarning() << "     xFader curve changed:" << value;
+                qWarning() << "     .";
+            });
+    connect(m_pXFaderCalibration.get(),
+            &ControlObject::valueChanged,
+            this,
+            [](double value) {
+                qWarning() << "     .";
+                qWarning() << "     xFader cali changed: " << value;
+                qWarning() << "     .";
+            });
     // Note: the EQ Rack is set in EffectsManager::setupDefaults();
 }
 
diff --git a/src/preferences/dialog/dlgprefmixer.cpp b/src/preferences/dialog/dlgprefmixer.cpp
index 5bdf5cbf8f6..c568e3a1c9e 100644
--- a/src/preferences/dialog/dlgprefmixer.cpp
+++ b/src/preferences/dialog/dlgprefmixer.cpp
@@ -816,6 +816,9 @@ void DlgPrefMixer::slotUpdateXFaderFromConfigOrControls() {
         return;
     }
 
+    qWarning() << "     .";
+    qWarning() << "     .";
+    qWarning() << "     slotUpdateXFaderFromConfigOrControls";
     // Read values from config only on first update if the xfader curve controls
     // are still at their default values. This should detect if controller mappings
     // (or skin attributes) have changed the xfader controls.
@@ -826,6 +829,7 @@ void DlgPrefMixer::slotUpdateXFaderFromConfigOrControls() {
             m_xfModeCO->get() == m_xfModeCO->getDefault() &&
             m_xfReverseCO->get() == m_xfReverseCO->getDefault();
     if (readCfg) {
+        qWarning() << "     --> init from config";
         m_xFaderTransform = m_pConfig->getValue(kXfaderCurveKey, EngineXfader::kTransformDefault);
         // "xFaderCalibration" is not stored in the config and it's not expsoed
         // with a slider here. Each time the slider is touched it's calculated
@@ -839,7 +843,14 @@ void DlgPrefMixer::slotUpdateXFaderFromConfigOrControls() {
     } else {
         // Update xfader from controls
         slotXFaderControlChanged();
+        qWarning() << "     --> from controls";
     }
+    qWarning().noquote() << "         mode:       "
+                         << QString(m_xFaderMode == MIXXX_XFADER_CONSTPWR ? "Const" : "Addi");
+    qWarning() << "         transform:  " << m_xFaderTransform;
+    qWarning() << "         calibration:" << m_xFaderCal;
+    qWarning().noquote() << "         reverse:    "
+                         << QString(m_xFaderReverse ? "Yes" : "normal");
 
     checkBoxReverse->setChecked(m_xFaderReverse);
 
@@ -853,6 +864,7 @@ void DlgPrefMixer::slotUpdateXFaderFromConfigOrControls() {
     // m_xFaderCal and calls drawXfaderDisplay().
     // This would overwrite the m_cal value we read from the calibration CO,
     // so block it.
+    qWarning() << "     --> SliderXFader->setValue" << sliderVal;
     SliderXFader->blockSignals(readCfg);
     SliderXFader->setValue(static_cast<int>(std::round(sliderVal)));
     SliderXFader->blockSignals(false);
@@ -860,13 +872,17 @@ void DlgPrefMixer::slotUpdateXFaderFromConfigOrControls() {
     // Same here
     buttonGroupCrossfaderModes->blockSignals(true);
     if (m_xFaderMode == MIXXX_XFADER_CONSTPWR) {
+        qWarning() << "     --> radioButtonConstantPower->setChecked";
         radioButtonConstantPower->setChecked(true);
     } else {
+        qWarning() << "     --> radioButtonAdditive->setChecked";
         radioButtonAdditive->setChecked(true);
     }
     buttonGroupCrossfaderModes->blockSignals(false);
 
     drawXfaderDisplay();
+    qWarning() << "     .";
+    qWarning() << "     .";
 }
 
 void DlgPrefMixer::drawXfaderDisplay() {
@@ -961,10 +977,16 @@ void DlgPrefMixer::drawXfaderDisplay() {
 }
 
 void DlgPrefMixer::slotXFaderReverseBoxToggled() {
+    qWarning() << "     .";
+    qWarning() << "     slotXFaderReverseChanged";
+    qWarning() << "     .";
     m_xFaderReverse = checkBoxReverse->isChecked();
 }
 
 void DlgPrefMixer::slotXFaderSliderChanged() {
+    qWarning() << "     .";
+    qWarning() << "     slotXFaderWidgetsChanged";
+    qWarning() << "     .";
     // m_xFaderTransform is in the range of 1 to 1000 while 50 % slider results
     // to ~2, which represents a medium rounded fader curve.
     double transform = RescalerUtils::linearToOneByX(
@@ -987,6 +1009,9 @@ void DlgPrefMixer::slotXFaderSliderChanged() {
 }
 
 void DlgPrefMixer::slotXFaderModeToggled() {
+    qWarning() << "     .";
+    qWarning() << "     slotXFaderModeToggled";
+    qWarning() << "     .";
     m_xFaderMode = radioButtonConstantPower->isChecked()
             ? MIXXX_XFADER_CONSTPWR
             : MIXXX_XFADER_ADDITIVE;
@@ -995,6 +1020,9 @@ void DlgPrefMixer::slotXFaderModeToggled() {
 }
 
 void DlgPrefMixer::slotXFaderControlChanged() {
+    qWarning() << "     .";
+    qWarning() << "     slotXFaderControlChanged";
+    qWarning() << "     .";
     m_xFaderTransform = m_xfCurveCO->get();
     m_xFaderCal = m_xfCalibrationCO->get();
     m_xFaderMode = static_cast<int>(m_xfModeCO->get());