Fix Qt 5.15 deprecation warnings

Change-Id: I1d6968de823c43e42ca53eb68972ba5e69dc29ed
Reviewed-by: Ivan Komissarov <ABBAPOH@gmail.com>

3 files changed, 9 insertions, 8 deletions

diff --git a/examples/collidingmice/main.cpp b/examples/collidingmice/main.cpp
index ffddf4c81..2d0514427 100644
--- a/examples/collidingmice/main.cpp
+++ b/examples/collidingmice/main.cpp
@@ -64,7 +64,6 @@ static const int MouseCount = 7;
 int main(int argc, char **argv)
 {
     QApplication app(argc, argv);
-    qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
 //! [0]
 
 //! [1]
diff --git a/examples/collidingmice/mouse.cpp b/examples/collidingmice/mouse.cpp
index 7075ada38..bbc718649 100644
--- a/examples/collidingmice/mouse.cpp
+++ b/examples/collidingmice/mouse.cpp
@@ -71,9 +71,9 @@ static qreal normalizeAngle(qreal angle)
 //! [0]
 Mouse::Mouse()
     : angle(0), speed(0), mouseEyeDirection(0),
-      color(qrand() % 256, qrand() % 256, qrand() % 256)
+      color(m_rand.generate() % 256, m_rand.generate() % 256, m_rand.generate() % 256)
 {
-    setRotation(qrand() % (360 * 16));
+    setRotation(m_rand.generate() % (360 * 16));
 }
 //! [0]
 
@@ -189,16 +189,16 @@ void Mouse::advance(int step)
 
     // Add some random movement
 //! [10]
-    if (dangerMice.size() > 1 && (qrand() % 10) == 0) {
-        if (qrand() % 1)
-            angle += (qrand() % 100) / 500.0;
+    if (dangerMice.size() > 1 && (m_rand.generate() % 10) == 0) {
+        if (m_rand.generate() % 1)
+            angle += (m_rand.generate() % 100) / 500.0;
         else
-            angle -= (qrand() % 100) / 500.0;
+            angle -= (m_rand.generate() % 100) / 500.0;
     }
 //! [10]
 
 //! [11]
-    speed += (-50 + qrand() % 100) / 100.0;
+    speed += (-50 + m_rand.generate() % 100) / 100.0;
 
     qreal dx = ::sin(angle) * 10;
     mouseEyeDirection = (qAbs(dx / 5) < 1) ? 0 : dx / 5;
diff --git a/examples/collidingmice/mouse.h b/examples/collidingmice/mouse.h
index a98618ea5..23b9faad5 100644
--- a/examples/collidingmice/mouse.h
+++ b/examples/collidingmice/mouse.h
@@ -52,6 +52,7 @@
 #define MOUSE_H
 
 #include <QGraphicsItem>
+#include <QRandomGenerator>
 
 //! [0]
 class Mouse : public QGraphicsItem
@@ -68,6 +69,7 @@ protected:
     void advance(int step) override;
 
 private:
+    QRandomGenerator m_rand = QRandomGenerator::securelySeeded();
     qreal angle;
     qreal speed;
     qreal mouseEyeDirection;