Examples: add scrollbar to allow viewing all options on Android

This fix is most relevant for Android for affine and gradients examples.
Currently, if the screen size is small the settings will show cramped
and not usable. Thus, adding a scrollbar to fix that.

Task-number: QTBUG-80717
Change-Id: Ic25460e5ce37a5c53bbcae48e11b6b787c45e999
Reviewed-by: BogDan Vatra <bogdan@kdab.com>

2 files changed, 33 insertions, 12 deletions

diff --git a/examples/widgets/painting/affine/xform.cpp b/examples/widgets/painting/affine/xform.cpp
index 4e7cb91ce1..d7ed2125d2 100644
--- a/examples/widgets/painting/affine/xform.cpp
+++ b/examples/widgets/painting/affine/xform.cpp
@@ -787,8 +787,8 @@ XFormWidget::XFormWidget(QWidget *parent)
     view = new XFormView(this);
     view->setMinimumSize(200, 200);
 
-    QGroupBox *mainGroup = new QGroupBox(this);
-    mainGroup->setFixedWidth(180);
+    QWidget *mainContentWidget = new QWidget();
+    QGroupBox *mainGroup = new QGroupBox(mainContentWidget);
     mainGroup->setTitle(tr("Affine Transformations"));
 
     QGroupBox *rotateGroup = new QGroupBox(mainGroup);
@@ -837,10 +837,6 @@ XFormWidget::XFormWidget(QWidget *parent)
     whatsThisButton->setText(tr("What's This?"));
     whatsThisButton->setCheckable(true);
 
-    QHBoxLayout *viewLayout = new QHBoxLayout(this);
-    viewLayout->addWidget(view);
-    viewLayout->addWidget(mainGroup);
-
     QVBoxLayout *rotateGroupLayout = new QVBoxLayout(rotateGroup);
     rotateGroupLayout->addWidget(rotateSlider);
 
@@ -871,6 +867,20 @@ XFormWidget::XFormWidget(QWidget *parent)
 #endif
     mainGroupLayout->addWidget(whatsThisButton);
 
+    mainGroup->setLayout(mainGroupLayout);
+
+    QVBoxLayout *mainContentLayout = new QVBoxLayout();
+    mainContentLayout->addWidget(mainGroup);
+    mainContentWidget->setLayout(mainContentLayout);
+
+    QScrollArea *mainScrollArea = new QScrollArea();
+    mainScrollArea->setWidget(mainContentWidget);
+    mainScrollArea->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
+
+    QHBoxLayout *viewLayout = new QHBoxLayout(this);
+    viewLayout->addWidget(view);
+    viewLayout->addWidget(mainScrollArea);
+
     connect(rotateSlider, &QSlider::valueChanged, view, &XFormView::changeRotation);
     connect(shearSlider, &QSlider::valueChanged, view, &XFormView::changeShear);
     connect(scaleSlider, &QSlider::valueChanged, view, &XFormView::changeScale);
diff --git a/examples/widgets/painting/gradients/gradients.cpp b/examples/widgets/painting/gradients/gradients.cpp
index d62ae93a15..cb1a0177e9 100644
--- a/examples/widgets/painting/gradients/gradients.cpp
+++ b/examples/widgets/painting/gradients/gradients.cpp
@@ -282,7 +282,8 @@ GradientWidget::GradientWidget(QWidget *parent)
 
     m_renderer = new GradientRenderer(this);
 
-    QGroupBox *mainGroup = new QGroupBox(this);
+    QWidget *mainContentWidget = new QWidget();
+    QGroupBox *mainGroup = new QGroupBox(mainContentWidget);
     mainGroup->setTitle(tr("Gradients"));
 
     QGroupBox *editorGroup = new QGroupBox(mainGroup);
@@ -327,11 +328,6 @@ GradientWidget::GradientWidget(QWidget *parent)
     whatsThisButton->setText(tr("What's This?"));
     whatsThisButton->setCheckable(true);
 
-    // Layouts
-    QHBoxLayout *mainLayout = new QHBoxLayout(this);
-    mainLayout->addWidget(m_renderer);
-    mainLayout->addWidget(mainGroup);
-
     mainGroup->setFixedWidth(200);
     QVBoxLayout *mainGroupLayout = new QVBoxLayout(mainGroup);
     mainGroupLayout->addWidget(editorGroup);
@@ -370,6 +366,21 @@ GradientWidget::GradientWidget(QWidget *parent)
     defaultsGroupLayout->addWidget(default3Button);
     editorGroupLayout->addWidget(default4Button);
 
+    mainGroup->setLayout(mainGroupLayout);
+
+    QVBoxLayout *mainContentLayout = new QVBoxLayout();
+    mainContentLayout->addWidget(mainGroup);
+    mainContentWidget->setLayout(mainContentLayout);
+
+    QScrollArea *mainScrollArea = new QScrollArea();
+    mainScrollArea->setWidget(mainContentWidget);
+    mainScrollArea->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
+
+    // Layouts
+    QHBoxLayout *mainLayout = new QHBoxLayout(this);
+    mainLayout->addWidget(m_renderer);
+    mainLayout->addWidget(mainScrollArea);
+
     connect(m_editor, &GradientEditor::gradientStopsChanged,
             m_renderer, &GradientRenderer::setGradientStops);
     connect(m_linearButton, &QRadioButton::clicked,