Fixed black flash when setNight()

Do not change both palette and stylesheet, creates conflicts

bucket.cpp

@@ -56,7 +56,7 @@ void Bucket::InitializeClip() {
 
     ui->openExplorerButton->setStyleSheet(QString("background-color: rgba(255, 255, 255, 255);"));
     //Set working path
-    workingDirectory.setPath(QDir::currentPath() + "/");
+    workingDirectory.setPath("D:/Content/");//QDir::currentPath() + "/");
     ui->lineEdit->setText(workingDirectory.absolutePath() + "/");
     UpdateVisibleFiles();
 }

mainwindow.cpp

@@ -44,8 +44,7 @@ MainWindow::MainWindow(QWidget *parent) :
 
     HideTrash();
 
-    dayNightAnimation = new QPropertyAnimation(this, "color");
-    animationHasAValue = false;
+    backgroundAlpha = 0;
     SetDay();
     trashWidget->setVisible(true);
 
@@ -89,6 +88,7 @@ void MainWindow::InitializeWindow()
 	flags |= Qt::WindowStaysOnTopHint;
 	flags |= Qt::X11BypassWindowManagerHint;
 	this->setWindowFlags(flags);
+    this->setAttribute(Qt::WA_TranslucentBackground);
 
 
 
@@ -173,13 +173,15 @@ void MainWindow::WarnNodesFileDownloaded() {
 void MainWindow::NodeMoving(NodeWidget* node) {
     if(!trashVisible) {
         ShowTrash();
+        qDebug() << "Node moving ...";
         SetNight();
     }
 }
 
 void MainWindow::NodeMoved(NodeWidget* node) {
     HideTrash();
     SetDay();
+    qDebug() << "Node moved !";
 
     bool destroyed = false;
     int i=0;
@@ -215,7 +217,7 @@ void MainWindow::ShowTrash() {
     animation->setEndValue(QPoint(x, y));
     animation->setEasingCurve(QEasingCurve::OutExpo);
 
-    animation->start();
+    animation->start(QAbstractAnimation::DeleteWhenStopped);
     trashVisible = true;
 }
 
@@ -231,45 +233,39 @@ void MainWindow::HideTrash() {
     animation->setEasingCurve(QEasingCurve::InExpo);
     //connect(animation, SIGNAL(finished()), this, SLOT(MoveToNode()));
 
-    animation->start();
+    animation->start(QAbstractAnimation::DeleteWhenStopped);
     trashVisible = false;
 }
 
 void MainWindow::SetNight() {
-    //this->setAttribute(Qt::WA_TranslucentBackground, false);
-
-//    backgroundAlpha = 20;
-//    this->setStyleSheet("background-color:rgba(0,0,0,50);");
-
-QPropertyAnimation *dayNightAnimation = new QPropertyAnimation(this, "color");
+    QPropertyAnimation *dayNightAnimation = new QPropertyAnimation(this, "backgroundAlpha");
     dayNightAnimation->setDuration(250);
-    dayNightAnimation->setStartValue(color());
-    dayNightAnimation->setEndValue(QColor(0, 0, 0, 50));
-    dayNightAnimation->start();
-     this->show();
+    dayNightAnimation->setStartValue(backgroundAlpha);
+    dayNightAnimation->setEndValue(75);
+    dayNightAnimation->setDuration(500);
+    dayNightAnimation->setEasingCurve(QEasingCurve::OutExpo);
+    dayNightAnimation->start(QAbstractAnimation::DeleteWhenStopped);
+
     qDebug() << "Set Night";
 }
 
 void MainWindow::SetDay() {
-    this->setAttribute(Qt::WA_TranslucentBackground);
-  //  backgroundAlpha = 1;
-   // this->setStyleSheet("background-color:rgba(0,0,0,0);");
-
-
-    QPropertyAnimation *animation = new QPropertyAnimation(this, "color");
+    QPropertyAnimation *animation = new QPropertyAnimation(this, "backgroundAlpha");
     animation->setDuration(250);
-    animation->setStartValue(color());
-    animation->setEndValue(QColor(0, 0, 0, 0));
-    animation->start();
-    animationHasAValue = true;
+    animation->setStartValue(backgroundAlpha);
+    animation->setEndValue(0);
+    animation->setEasingCurve(QEasingCurve::InExpo);
+    animation->start(QAbstractAnimation::DeleteWhenStopped);
 
-    this->show();
     qDebug() << "Set Day";
 }
 
 
 void MainWindow::paintEvent(QPaintEvent *event) {
-
+    QColor backgroundColor = QColor(0,0,0,0);
+    backgroundColor.setAlpha(backgroundAlpha);
+    QPainter customPainter(this);
+    customPainter.fillRect(rect(),backgroundColor);
 //    QColor backgroundColor = palette().light().color();
 //     backgroundColor.setAlpha(backgroundAlpha);
 //     QPainter customPainter(this);

mainwindow.h

@@ -23,7 +23,7 @@ class MainWindow;
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
-     Q_PROPERTY(QColor color READ color WRITE setColor)
+    Q_PROPERTY(int backgroundAlpha READ getBackgroundAlpha WRITE setBackgroundAlpha)
 
 public:
     explicit MainWindow(QWidget *parent = 0);
@@ -43,11 +43,19 @@ class MainWindow : public QMainWindow
     void dropEvent(QDropEvent *event);
     void leaveEvent(QEvent* e);
 
-    void setColor (QColor color){
-        setStyleSheet(QString("background-color: rgba(%1, %2, %3, %4);").arg(color.red()).arg(color.green()).arg(color.blue()).arg(color.alpha()));
+    int getBackgroundAlpha() {
+        return backgroundAlpha;
     }
-    QColor color(){
-        return QWidget::palette().color(QWidget::backgroundRole());
+
+    void setBackgroundAlpha(int value) {
+        backgroundAlpha = value;
+        QPalette palette;
+        palette.setBrush(QPalette::Background, QColor(0,0,0,backgroundAlpha));
+        this->setAutoFillBackground(true);
+        setPalette(palette);
+
+        repaint();
+        this->show();
     }
 
 signals:
@@ -67,7 +75,7 @@ public slots:
 public:
     int width;
     int height;
-    int backgroundAlpha;
+    int backgroundAlpha = 255;
     bool trashVisible;
     bool UIVisible;
 
@@ -76,8 +84,6 @@ public slots:
 private:
 	void InitializeWindow();
 
-    QPropertyAnimation* dayNightAnimation;
-    bool animationHasAValue;
     QThread workerThread;
     QPoint dragPosition;
     DownloadManager *manager;

mainwindow.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
+  <property name="autoFillBackground">
+   <bool>true</bool>
+  </property>
   <widget class="QWidget" name="centralWidget"/>
  </widget>
  <layoutdefault spacing="6" margin="11"/>

node.ui

@@ -10,14 +10,17 @@
     <height>300</height>
    </rect>
   </property>
+  <property name="focusPolicy">
+   <enum>Qt::ClickFocus</enum>
+  </property>
   <property name="acceptDrops">
    <bool>true</bool>
   </property>
   <property name="windowTitle">
    <string>NodeWidget</string>
   </property>
   <property name="autoFillBackground">
-   <bool>true</bool>
+   <bool>false</bool>
   </property>
   <widget class="QLabel" name="label">
    <property name="geometry">

nodewidget.cpp

@@ -25,7 +25,7 @@ NodeWidget::NodeWidget(Node* node,QWidget *parent, int size, NodeSettings settin
     isBucketOpened = false;
     bucket = new Bucket(settings, this->nodeDrawer);
     bucket->setStyleSheet(QString("background-color: rgba(255, 255, 255, 0);"));
-    bucket->setVisible(true);
+    bucket->setVisible(false);
     bucket->move(BottomLeft());
     //ToggleBucket();
 
@@ -172,18 +172,6 @@ void NodeWidget::DockNode() {
     animation->start();
 }
 
-void NodeWidget::CreatePainter()
-{
-	/*p = new QPainter(this);
-	b = new QRadialGradient();
-	b->setColorAt(0.0, Qt::white);
-	b->setColorAt(0.2, Qt::green);
-	b->setColorAt(1.0, Qt::black);
-	p->setBrush(*b);
-	p->setRenderHint(QPainter::Antialiasing, true);
-	p->setPen(QPen(Qt::green, 0));*/
-}
-
 void NodeWidget::MoveTo(int x, int y)
 {
     QPoint target(x, y);
@@ -235,6 +223,10 @@ QString NodeWidget::GetName()
 
 void NodeWidget::paintEvent(QPaintEvent *event)
 {	
+    QColor backgroundColor = QColor(0,0,0);//palette().dark().color();
+     backgroundColor.setAlpha(0);
+     QPainter customPainter(this);
+     customPainter.fillRect(rect(),backgroundColor);
     this->show();
 //	QRadialGradient brush(rect().center().x(), rect().center().y(), _radius);
 //	brush.setColorAt(0.0, _color);

nodewidget.h

@@ -28,9 +28,8 @@ class NodeWidget : public QWidget
 public:
     NodeWidget(Node* node, QWidget *parent, int size,  NodeSettings settings);
 	~NodeWidget();
-	void CreatePainter();
-	virtual void paintEvent(QPaintEvent*);
 
+	virtual void paintEvent(QPaintEvent*);
 	virtual void enterEvent(QEvent* e);
 	void mouseMoveEvent(QMouseEvent *event);
 	void mousePressEvent(QMouseEvent *event);