Make all examples high-dpi aware

Setting the Qt::AA_EnableHighDpiScaling attribute makes sure that the
scrollbars are scaled, and that the default zoom level is sensible.

Task-number: QTBUG-54113
Change-Id: I0ae7eb97cb9e2824e7f9b92d77cf2986cac66685
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

7 files changed, 11 insertions, 1 deletions

diff --git a/examples/webenginewidgets/contentmanipulation/main.cpp b/examples/webenginewidgets/contentmanipulation/main.cpp
index a21d881f4..2c6f77c60 100644
--- a/examples/webenginewidgets/contentmanipulation/main.cpp
+++ b/examples/webenginewidgets/contentmanipulation/main.cpp
@@ -44,6 +44,7 @@
 
 int main(int argc, char * argv[])
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication app(argc, argv);
 
     QUrl url;
diff --git a/examples/webenginewidgets/cookiebrowser/main.cpp b/examples/webenginewidgets/cookiebrowser/main.cpp
index c122eb7c3..15a87609b 100644
--- a/examples/webenginewidgets/cookiebrowser/main.cpp
+++ b/examples/webenginewidgets/cookiebrowser/main.cpp
@@ -45,6 +45,7 @@
 
 int main(int argc, char *argv[])
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication app(argc, argv);
     MainWindow window(QUrl("http://qt.io"));
     window.show();
diff --git a/examples/webenginewidgets/demobrowser/main.cpp b/examples/webenginewidgets/demobrowser/main.cpp
index 125d92dc2..7bb55780f 100644
--- a/examples/webenginewidgets/demobrowser/main.cpp
+++ b/examples/webenginewidgets/demobrowser/main.cpp
@@ -44,6 +44,7 @@
 
 int main(int argc, char **argv)
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     Q_INIT_RESOURCE(data);
     BrowserApplication application(argc, argv);
     if (!application.isTheOnlyBrowser())
diff --git a/examples/webenginewidgets/markdowneditor/main.cpp b/examples/webenginewidgets/markdowneditor/main.cpp
index 73fe58199..a99f401cb 100644
--- a/examples/webenginewidgets/markdowneditor/main.cpp
+++ b/examples/webenginewidgets/markdowneditor/main.cpp
@@ -45,6 +45,7 @@
 
 int main(int argc, char *argv[])
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication a(argc, argv);
 
     MainWindow window;
diff --git a/examples/webenginewidgets/minimal/doc/src/minimal.qdoc b/examples/webenginewidgets/minimal/doc/src/minimal.qdoc
index 22f28e604..dd6a70566 100644
--- a/examples/webenginewidgets/minimal/doc/src/minimal.qdoc
+++ b/examples/webenginewidgets/minimal/doc/src/minimal.qdoc
@@ -42,7 +42,10 @@
 
     \section1 The Code
 
-    In \c main.cpp we instantiate a QApplication and a QWebEngineView. The URL
+    In the \c main function we first set the Qt::AA_EnableHighDpiScaling.
+    This lets the web view automatically scale on high-dpi displays.
+
+    Next, we instantiate a QApplication and a QWebEngineView. The URL
     to load is set by calling \l QWebEngineView::setUrl. The view widget is
     given a reasonable default size, and shown.
     Finally, QApplication::exec() launches the main event loop.
diff --git a/examples/webenginewidgets/minimal/main.cpp b/examples/webenginewidgets/minimal/main.cpp
index d9a137739..729d68fa0 100644
--- a/examples/webenginewidgets/minimal/main.cpp
+++ b/examples/webenginewidgets/minimal/main.cpp
@@ -43,6 +43,7 @@
 
 int main(int argc, char *argv[])
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication app(argc, argv);
 
     QWebEngineView view;
diff --git a/examples/webenginewidgets/simplebrowser/main.cpp b/examples/webenginewidgets/simplebrowser/main.cpp
index 750e7ae43..be08c1cb0 100644
--- a/examples/webenginewidgets/simplebrowser/main.cpp
+++ b/examples/webenginewidgets/simplebrowser/main.cpp
@@ -56,6 +56,8 @@ QString getCommandLineUrlArgument()
 
 int main(int argc, char **argv)
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+
     QApplication app(argc, argv);
     app.setWindowIcon(QIcon(QLatin1String(":simplebrowser.svg")));