From c5dc75da5d1a425a7d74658129b999816db86918 Mon Sep 17 00:00:00 2001
From: Aditya <adityakumar4644@gmail.com>
Date: Tue, 23 Jun 2020 14:00:34 +0530
Subject: [PATCH] Gradient can be toggled and color can be changed.

---
 data/themes/classic/style.css  |  5 +++++
 data/themes/default/style.css  |  5 +++++
 include/SongEditor.h           | 15 ++++++++++++++
 src/gui/editors/SongEditor.cpp | 38 +++++++++++++++++++++++++++-------
 4 files changed, 56 insertions(+), 7 deletions(-)

diff --git a/data/themes/classic/style.css b/data/themes/classic/style.css
index cf609066a81..a19547989bf 100644
--- a/data/themes/classic/style.css
+++ b/data/themes/classic/style.css
@@ -118,6 +118,11 @@ QMenu::indicator:selected {
 	background-color: #747474;
 }
 
+positionLine {
+	qproperty-tailGradient: false;
+	qproperty-lineColor: rgba(255, 255, 255, 153);
+}
+
 PianoRoll {
 	background-color: rgb(0, 0, 0);
 	qproperty-backgroundShade: rgba( 255, 255, 255, 10 );
diff --git a/data/themes/default/style.css b/data/themes/default/style.css
index feb85a612b0..4c698a9e239 100644
--- a/data/themes/default/style.css
+++ b/data/themes/default/style.css
@@ -150,6 +150,11 @@ QMenu::indicator:selected {
 	background-color: #101213;
 }
 
+positionLine {
+	qproperty-tailGradient: true;
+	qproperty-lineColor: rgb(255, 255, 255);
+}
+
 PianoRoll {
 	background-color: #141616;
 	qproperty-backgroundShade: rgba(255, 255, 255, 10);
diff --git a/include/SongEditor.h b/include/SongEditor.h
index 9621bcc23d8..a668d2f3651 100644
--- a/include/SongEditor.h
+++ b/include/SongEditor.h
@@ -28,6 +28,7 @@
 #define SONG_EDITOR_H
 
 #include <QVector>
+#include <QLinearGradient>
 
 #include "ActionGroup.h"
 #include "Editor.h"
@@ -45,13 +46,27 @@ class Song;
 class TextFloat;
 class TimeLineWidget;
 
+Q_DECLARE_METATYPE(QLinearGradient)
+
 class positionLine : public QWidget
 {
+	Q_OBJECT
+	Q_PROPERTY( bool tailGradient READ tailGradient WRITE setTailGradient )
+	Q_PROPERTY( QColor lineColor READ lineColor WRITE setLineColor )
 public:
 	positionLine( QWidget * parent );
+	
+	// qproperty access functions
+	bool tailGradient() const;
+	void setTailGradient( const bool & g );
+	QColor lineColor() const;
+	void setLineColor( const QColor & c );
 
 private:
 	void paintEvent( QPaintEvent * pe ) override;
+	
+	bool m_tailGradient;
+	QColor m_lineColor;
 
 } ;
 
diff --git a/src/gui/editors/SongEditor.cpp b/src/gui/editors/SongEditor.cpp
index ab04a98a87b..dc97f8c1777 100644
--- a/src/gui/editors/SongEditor.cpp
+++ b/src/gui/editors/SongEditor.cpp
@@ -53,24 +53,36 @@
 #include "Track.h"
 
 positionLine::positionLine( QWidget * parent ) :
-	QWidget( parent )
+	QWidget( parent ),
+	m_tailGradient ( false ),
+	m_lineColor (0, 0, 0, 0)
 {
 	setFixedWidth( 8 );
 	setAttribute( Qt::WA_NoSystemBackground, true );
 }
 
-
-
-
 void positionLine::paintEvent( QPaintEvent * pe )
 {
 	QPainter p( this );
 	
 	// Create the gradient trail behind the line
 	QLinearGradient gradient(rect().bottomLeft(), rect().bottomRight());
-	gradient.setColorAt(0, QColor (255, 255, 255, 0) );
-	gradient.setColorAt(0.875, QColor (255, 255, 255, 60) );
-	gradient.setColorAt(1, QColor (255, 255, 255, 153) );
+	
+	gradient.setColorAt(0,
+		QColor (m_lineColor.red(), m_lineColor.green(), m_lineColor.blue(), 0) );
+	gradient.setColorAt(1,
+		QColor (m_lineColor.red(), m_lineColor.green(), m_lineColor.blue(), 153) );
+		
+	if (m_tailGradient) 
+	{ 
+		gradient.setColorAt(0.875, 
+			QColor (m_lineColor.red(), m_lineColor.green(), m_lineColor.blue(), 60) );
+	}
+	else 
+	{ 
+		gradient.setColorAt(0.875, 
+			QColor (m_lineColor.red(), m_lineColor.green(), m_lineColor.blue(), 0) );
+	}
 	
 	// Fill line
 	p.fillRect( rect(), gradient );
@@ -1139,3 +1151,15 @@ void SongEditorWindow::keyReleaseEvent( QKeyEvent *ke )
 		}
 	}
 }
+
+bool positionLine::tailGradient() const
+{ return m_tailGradient; }
+
+void positionLine::setTailGradient( const bool & g )
+{ m_tailGradient = g; }
+
+QColor positionLine::lineColor() const
+{ return m_lineColor; }
+
+void positionLine::setLineColor( const QColor & c )
+{ m_lineColor = c; }