UI: Add ability to reset sliders when double clicked

UI/CMakeLists.txt

@@ -207,6 +207,7 @@ set(obs_HEADERS
 	properties-view.hpp
 	properties-view.moc.hpp
 	display-helpers.hpp
+	balance-slider.hpp
 	double-slider.hpp
 	focus-list.hpp
 	menu-button.hpp

UI/adv-audio-control.cpp

@@ -4,7 +4,6 @@
 #include <QSpinBox>
 #include <QComboBox>
 #include <QCheckBox>
-#include <QSlider>
 #include "qt-wrappers.hpp"
 #include "obs-app.hpp"
 #include "adv-audio-control.hpp"
@@ -32,7 +31,7 @@ OBSAdvAudioCtrl::OBSAdvAudioCtrl(QGridLayout *, obs_source_t *source_)
 	nameLabel                      = new QLabel();
 	volume                         = new QSpinBox();
 	forceMono                      = new QCheckBox();
-	balance                        = new QSlider(Qt::Horizontal);
+	balance                        = new BalanceSlider();
 #if defined(_WIN32) || defined(__APPLE__) || HAVE_PULSEAUDIO
 	monitoringType                 = new QComboBox();
 #endif
@@ -82,6 +81,7 @@ OBSAdvAudioCtrl::OBSAdvAudioCtrl(QGridLayout *, obs_source_t *source_)
 	forceMonoContainer->layout()->setAlignment(forceMono,
 			Qt::AlignHCenter | Qt::AlignVCenter);
 
+	balance->setOrientation(Qt::Horizontal);
 	balance->setMinimum(0);
 	balance->setMaximum(100);
 	balance->setTickPosition(QSlider::TicksAbove);
@@ -153,6 +153,8 @@ OBSAdvAudioCtrl::OBSAdvAudioCtrl(QGridLayout *, obs_source_t *source_)
 			this, SLOT(downmixMonoChanged(bool)));
 	QWidget::connect(balance, SIGNAL(valueChanged(int)),
 			this, SLOT(balanceChanged(int)));
+	QWidget::connect(balance, SIGNAL(doubleClicked()),
+			this, SLOT(ResetBalance()));
 	QWidget::connect(syncOffset, SIGNAL(valueChanged(int)),
 			this, SLOT(syncOffsetChanged(int)));
 #if defined(_WIN32) || defined(__APPLE__) || HAVE_PULSEAUDIO
@@ -314,6 +316,12 @@ void OBSAdvAudioCtrl::balanceChanged(int val)
 	obs_source_set_balance_value(source, bal);
 }
 
+void OBSAdvAudioCtrl::ResetBalance()
+{
+	balance->setValue(50);
+}
+
+
 void OBSAdvAudioCtrl::syncOffsetChanged(int milliseconds)
 {
 	int64_t cur_val = obs_source_get_sync_offset(source);

UI/adv-audio-control.hpp

@@ -3,12 +3,12 @@
 #include <obs.hpp>
 #include <QWidget>
 #include <QPointer>
+#include "balance-slider.hpp"
 
 class QGridLayout;
 class QLabel;
 class QSpinBox;
 class QCheckBox;
-class QSlider;
 class QComboBox;
 
 class OBSAdvAudioCtrl : public QObject {
@@ -24,7 +24,7 @@ private:
 	QPointer<QLabel>       nameLabel;
 	QPointer<QSpinBox>     volume;
 	QPointer<QCheckBox>    forceMono;
-	QPointer<QSlider>      balance;
+	QPointer<BalanceSlider>balance;
 	QPointer<QLabel>       labelL;
 	QPointer<QLabel>       labelR;
 	QPointer<QSpinBox>     syncOffset;
@@ -70,4 +70,5 @@ public slots:
 	void mixer4Changed(bool checked);
 	void mixer5Changed(bool checked);
 	void mixer6Changed(bool checked);
+	void ResetBalance();
 };

UI/balance-slider.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <QSlider>
+#include <QMouseEvent>
+
+class BalanceSlider : public QSlider {
+	Q_OBJECT
+
+public:
+	inline BalanceSlider(QWidget *parent = 0) : QSlider(parent) {}
+
+signals:
+	void doubleClicked();
+
+protected:
+	void mouseDoubleClickEvent(QMouseEvent *event)
+	{
+		emit doubleClicked();
+		event->accept();
+	}
+};