From 88d4bea2c11cc7b075fb80678a6056380a2406b1 Mon Sep 17 00:00:00 2001
From: Sergey Kartashev <sergei.kartashev@yandex.ru>
Date: Mon, 14 Jan 2019 10:59:37 +0300
Subject: [PATCH] Qt 5.5.1 (ubuntu 16.04) compatibility buildfixes

---
 demo/main.cpp               |  2 ++
 src/DockContainerWidget.cpp | 30 ++++++++++++++++++++++++++++++
 src/DockOverlay.cpp         | 13 ++++++++++++-
 src/DockWidget.cpp          | 13 ++++++++++++-
 src/src.pro                 |  4 ++++
 5 files changed, 60 insertions(+), 2 deletions(-)

diff --git a/demo/main.cpp b/demo/main.cpp
index 1a2bd47..b1f2e9c 100644
--- a/demo/main.cpp
+++ b/demo/main.cpp
@@ -38,7 +38,9 @@ void myMessageOutput(QtMsgType type, const QMessageLogContext &context, const QS
 int main(int argc, char *argv[])
 {
 	QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+#if QT_VERSION >= 0x050600
     QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
 	std::shared_ptr<int> b;
 	QApplication a(argc, argv);
 	a.setQuitOnLastWindowClosed(true);
diff --git a/src/DockContainerWidget.cpp b/src/DockContainerWidget.cpp
index 8292cb9..3cbfefd 100644
--- a/src/DockContainerWidget.cpp
+++ b/src/DockContainerWidget.cpp
@@ -49,6 +49,32 @@
 
 #include <iostream>
 
+#if QT_VERSION < 0x050900
+
+inline char toHexLower(uint value)
+{
+    return "0123456789abcdef"[value & 0xF];
+}
+
+QByteArray qByteArrayToHex(const QByteArray& src, char separator)
+{
+    if(src.size() == 0)
+        return QByteArray();
+
+    const int length = separator ? (src.size() * 3 - 1) : (src.size() * 2);
+    QByteArray hex(length, Qt::Uninitialized);
+    char *hexData = hex.data();
+    const uchar *data = (const uchar *)src.data();
+    for (int i = 0, o = 0; i < src.size(); ++i) {
+        hexData[o++] = toHexLower(data[i] >> 4);
+        hexData[o++] = toHexLower(data[i] & 0xf);
+
+        if ((separator) && (o < length))
+            hexData[o++] = separator;
+    }
+    return hex;
+}
+#endif
 
 namespace ads
 {
@@ -1182,7 +1208,11 @@ void CDockContainerWidget::saveState(QXmlStreamWriter& s) const
 	{
 		CFloatingDockContainer* FloatingWidget = floatingWidget();
 		QByteArray Geometry = FloatingWidget->saveGeometry();
+#if QT_VERSION < 0x050900
+        s.writeTextElement("Geometry", qByteArrayToHex(Geometry, ' '));
+#else
 		s.writeTextElement("Geometry", Geometry.toHex(' '));
+#endif
 	}
 	d->saveChildNodesState(s, d->RootSplitter);
 	s.writeEndElement();
diff --git a/src/DockOverlay.cpp b/src/DockOverlay.cpp
index bf0ce3e..b1cb4f7 100644
--- a/src/DockOverlay.cpp
+++ b/src/DockOverlay.cpp
@@ -168,7 +168,11 @@ struct DockOverlayCrossPrivate
 		QColor borderColor = iconColor(CDockOverlayCross::FrameColor);
 		QColor backgroundColor = iconColor(CDockOverlayCross::WindowBackgroundColor);
 
+#if QT_VERSION >= 0x050600
 		double DevicePixelRatio = _this->window()->devicePixelRatioF();
+#else
+        double DevicePixelRatio = _this->window()->devicePixelRatio();
+#endif
 		QSizeF PixmapSize = size * DevicePixelRatio;
 		QPixmap pm(PixmapSize.toSize());
 		pm.fill(QColor(0, 0, 0, 0));
@@ -577,8 +581,11 @@ void CDockOverlayCross::setupOverlayCross(CDockOverlay::eMode Mode)
 	areaWidgets.insert(BottomDockWidgetArea, d->createDropIndicatorWidget(BottomDockWidgetArea, Mode));
 	areaWidgets.insert(LeftDockWidgetArea, d->createDropIndicatorWidget(LeftDockWidgetArea, Mode));
 	areaWidgets.insert(CenterDockWidgetArea, d->createDropIndicatorWidget(CenterDockWidgetArea, Mode));
+#if QT_VERSION >= 0x050600
 	d->LastDevicePixelRatio = devicePixelRatioF();
-
+#else
+    d->LastDevicePixelRatio = devicePixelRatio();
+#endif
 	setAreaWidgets(areaWidgets);
 	d->UpdateRequired = false;
 }
@@ -596,7 +603,11 @@ void CDockOverlayCross::updateOverlayIcons()
 	{
 		d->updateDropIndicatorIcon(Widget);
 	}
+#if QT_VESION >= 0x050600
 	d->LastDevicePixelRatio = devicePixelRatioF();
+#else
+    d->LastDevicePixelRatio = devicePixelRatio();
+#endif
 }
 
 
diff --git a/src/DockWidget.cpp b/src/DockWidget.cpp
index 0333d57..559a1d5 100644
--- a/src/DockWidget.cpp
+++ b/src/DockWidget.cpp
@@ -214,7 +214,7 @@ CDockWidget::CDockWidget(const QString &title, QWidget *parent) :
 	setObjectName(title);
 
 	d->TabWidget = new CDockWidgetTab(this);
-	d->ToggleViewAction = new QAction(title);
+    d->ToggleViewAction = new QAction(title, nullptr);
 	d->ToggleViewAction->setCheckable(true);
 	connect(d->ToggleViewAction, SIGNAL(triggered(bool)), this,
 		SLOT(toggleView(bool)));
@@ -282,7 +282,18 @@ void CDockWidget::setFeatures(DockWidgetFeatures features)
 //============================================================================
 void CDockWidget::setFeature(DockWidgetFeature flag, bool on)
 {
+#if QT_VERSION >= 0x050700
 	d->Features.setFlag(flag, on);
+#else
+    if(on)
+    {
+        d->Features |= flag;
+    }
+    else
+    {
+        d->Features &= ~flag;
+    }
+#endif
 }
 
 
diff --git a/src/src.pro b/src/src.pro
index 279bd7f..2f4ea7d 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -28,6 +28,10 @@ windows {
 	}
 }
 
+unix {
+    CONFIG += c++11
+}
+
 RESOURCES += ads.qrc
 
 HEADERS += \