DlgPrefWaveform: Use signal to request reload of user interface

This is similar to the previous commit, it basically removes the
necessity to hold a pointer to the main window.

3 files changed, 11 insertions, 2 deletions

diff --git a/src/preferences/dialog/dlgpreferences.cpp b/src/preferences/dialog/dlgpreferences.cpp
index a2651fc711..9ef77f6c59 100644
--- a/src/preferences/dialog/dlgpreferences.cpp
+++ b/src/preferences/dialog/dlgpreferences.cpp
@@ -154,11 +154,17 @@ DlgPreferences::DlgPreferences(
             tr("Interface"),
             "ic_preferences_interface.svg");
 
+    DlgPrefWaveform* pWaveformPage = new DlgPrefWaveform(this, mixxx, m_pConfig, pLibrary);
     addPageWidget(PreferencesPage(
-                          new DlgPrefWaveform(this, mixxx, m_pConfig, pLibrary),
+                          pWaveformPage,
                           new QTreeWidgetItem(contentsTreeWidget, QTreeWidgetItem::Type)),
             tr("Waveforms"),
             "ic_preferences_waveforms.svg");
+    connect(pWaveformPage,
+            &DlgPrefWaveform::reloadUserInterface,
+            this,
+            &DlgPreferences::reloadUserInterface,
+            Qt::DirectConnection);
 
     addPageWidget(PreferencesPage(
                           new DlgPrefColors(this, m_pConfig, pLibrary),
diff --git a/src/preferences/dialog/dlgprefwaveform.cpp b/src/preferences/dialog/dlgprefwaveform.cpp
index 8be6f4ca4e..8a17f4b236 100644
--- a/src/preferences/dialog/dlgprefwaveform.cpp
+++ b/src/preferences/dialog/dlgprefwaveform.cpp
@@ -257,7 +257,7 @@ void DlgPrefWaveform::slotSetWaveformType(int index) {
 
 void DlgPrefWaveform::slotSetWaveformOverviewType(int index) {
     m_pConfig->set(ConfigKey("[Waveform]","WaveformOverviewType"), ConfigValue(index));
-    m_pMixxx->rebootMixxxView();
+    emit reloadUserInterface();
 }
 
 void DlgPrefWaveform::slotSetDefaultZoom(int index) {
diff --git a/src/preferences/dialog/dlgprefwaveform.h b/src/preferences/dialog/dlgprefwaveform.h
index 66a488914a..f4105dd637 100644
--- a/src/preferences/dialog/dlgprefwaveform.h
+++ b/src/preferences/dialog/dlgprefwaveform.h
@@ -42,6 +42,9 @@ class DlgPrefWaveform : public DlgPreferencePage, public Ui::DlgPrefWaveformDlg
     void slotSetBeatGridAlpha(int alpha);
     void slotSetPlayMarkerPosition(int position);
 
+  signals:
+    void reloadUserInterface();
+
   private:
     void initWaveformControl();
     void calculateCachedWaveformDiskUsage();