Fix QtCharts Audio Example not scaling correctly on mobile devices

The minimumSize was set, and this stopped it from scaling correctly on
devices with a smaller screen size in landscape mode.

Added a Widget::resize() call in main.cpp. This replicates the same behavior
as before on desktop platforms and fixes the scaling issue for the small
screen devices.

Fixes: QTBUG-106404
Pick-to: 6.5
Change-Id: Ifd0395fd85e77f274ae23d59de19278801e6983b
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

2 files changed, 1 insertions, 2 deletions

diff --git a/examples/charts/audio/main.cpp b/examples/charts/audio/main.cpp
index 48a37edc..0c56b5e4 100644
--- a/examples/charts/audio/main.cpp
+++ b/examples/charts/audio/main.cpp
@@ -11,7 +11,6 @@
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
-
     const QAudioDevice inputDevice = QMediaDevices::defaultAudioInput();
     if (inputDevice.isNull()) {
         QMessageBox::warning(nullptr, "audio",
@@ -20,6 +19,7 @@ int main(int argc, char *argv[])
     }
 
     Widget w(inputDevice);
+    w.resize(800, 600);
     w.show();
     
     return a.exec();
diff --git a/examples/charts/audio/widget.cpp b/examples/charts/audio/widget.cpp
index fea5d8cf..888604b9 100644
--- a/examples/charts/audio/widget.cpp
+++ b/examples/charts/audio/widget.cpp
@@ -23,7 +23,6 @@ Widget::Widget(const QAudioDevice &deviceInfo, QWidget *parent) :
     m_series(new QLineSeries)
 {
     QChartView *chartView = new QChartView(m_chart);
-    chartView->setMinimumSize(800, 600);
     m_chart->addSeries(m_series);
     QValueAxis *axisX = new QValueAxis;
     axisX->setRange(0, XYSeriesIODevice::sampleCount);