update

example/src/component/CircularReveal.cpp

@@ -21,7 +21,6 @@ CircularReveal::CircularReveal(QQuickItem* parent) : QQuickPaintedItem(parent)
 void CircularReveal::paint(QPainter* painter)
 {
     painter->save();
-    painter->eraseRect(boundingRect());
     painter->drawImage(QRect(0, 0, static_cast<int>(width()), static_cast<int>(height())), _source);
     QPainterPath path;
     path.moveTo(_center.x(),_center.y());

src/Screenshot.cpp

@@ -9,7 +9,6 @@ Screenshot::Screenshot(QQuickItem* parent) : QQuickPaintedItem(parent)
     start(QPoint(0,0));
     end(QPoint(0,0));
     _desktopGeometry = qApp->primaryScreen()->virtualGeometry();
-    _desktopPixmap = qApp->primaryScreen()->grabWindow(0, _desktopGeometry.x(), _desktopGeometry.y(), _desktopGeometry.width(), _desktopGeometry.height());
     connect(this,&Screenshot::startChanged,this,[=]{update();});
     connect(this,&Screenshot::endChanged,this,[=]{update();});
 }
@@ -17,10 +16,22 @@ Screenshot::Screenshot(QQuickItem* parent) : QQuickPaintedItem(parent)
 void Screenshot::paint(QPainter* painter)
 {
     painter->save();
-    painter->eraseRect(boundingRect());
-    painter->drawPixmap(_desktopGeometry,_desktopPixmap);
     painter->fillRect(_desktopGeometry,_maskColor);
     painter->setCompositionMode(QPainter::CompositionMode_Clear);
     painter->fillRect(QRect(_start.x(),_start.y(),_end.x()-_start.x(),_end.y()-_start.y()), Qt::black);
     painter->restore();
 }
+
+ScreenshotBackground::ScreenshotBackground(QQuickItem* parent) : QQuickPaintedItem(parent)
+{
+
+    _desktopGeometry = qApp->primaryScreen()->virtualGeometry();
+    _desktopPixmap = qApp->primaryScreen()->grabWindow(0, _desktopGeometry.x(), _desktopGeometry.y(), _desktopGeometry.width(), _desktopGeometry.height());
+}
+
+void ScreenshotBackground::paint(QPainter* painter)
+{
+    painter->save();
+    painter->drawPixmap(_desktopGeometry,_desktopPixmap);
+    painter->restore();
+}

src/Screenshot.h

@@ -6,6 +6,20 @@
 #include <QPainter>
 #include "stdafx.h"
 
+class ScreenshotBackground : public QQuickPaintedItem
+{
+    Q_OBJECT;
+    QML_NAMED_ELEMENT(ScreenshotBackground)
+public:
+    ScreenshotBackground(QQuickItem* parent = nullptr);
+    void paint(QPainter* painter) override;
+
+private:
+    QRect _desktopGeometry;
+    QPixmap _desktopPixmap;
+};
+
+
 class Screenshot : public QQuickPaintedItem
 {
     Q_OBJECT
@@ -19,8 +33,6 @@ public:
 
 private:
     QRect _desktopGeometry;
-    QPixmap _desktopPixmap;
-    bool _isFirst = true;
 };
 
 #endif // SCREENSHOT_H

src/imports/FluentUI/Controls/FluScreenshot.qml

@@ -35,6 +35,9 @@ Loader {
             Component.onCompleted: {
                 setGeometry(0,0,Screen.desktopAvailableWidth,Screen.height)
             }
+            ScreenshotBackground{
+                anchors.fill: parent
+            }
             Screenshot{
                 id:screenshot
                 anchors.fill: parent