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-rw-r--r--src/qt/bitcoingui.cpp18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 450b83a8c6..06e53ea1e6 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -58,6 +58,20 @@
#include <QUrlQuery>
#endif
+#ifdef Q_OS_MAC
+#include <QEvent>
+
+// workaround for Qt OSX Bug:
+// https://bugreports.qt-project.org/browse/QTBUG-15631
+// QProgressBar uses around 10% CPU even when app is in background
+class QProgressBarMac : public QProgressBar
+{
+ bool event(QEvent *e) {
+ return (e->type() != QEvent::StyleAnimationUpdate) ? QProgressBar::event(e) : false;
+ }
+};
+#endif
+
const QString BitcoinGUI::DEFAULT_WALLET = "~Default";
BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
@@ -190,7 +204,11 @@ BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
// Progress bar and label for blocks download
progressBarLabel = new QLabel();
progressBarLabel->setVisible(false);
+#ifdef Q_OS_MAC
+ progressBar = new QProgressBarMac();
+#else
progressBar = new QProgressBar();
+#endif
progressBar->setAlignment(Qt::AlignCenter);
progressBar->setVisible(false);