Utils: Fix setting of minimal height of InfoLabels in QFormLayout

Calling setMinimumHeight is not compatible with QFormLayout if the label
has multiple lines. Overriding minimumSizeHint on the other hand is.

Change-Id: Id2167b295620322cec75035d7cc7125cc3221c4d
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/utils/infolabel.cpp

@@ -45,7 +45,6 @@ InfoLabel::InfoLabel(const QString &text, InfoType type, QWidget *parent)
     : ElidingLabel(text, parent)
 {
     setType(type);
-    setMinimumHeight(iconSize);
 }
 
 InfoLabel::InfoType InfoLabel::type() const
@@ -70,6 +69,13 @@ void InfoLabel::setFilled(bool filled)
     m_filled = filled;
 }
 
+QSize InfoLabel::minimumSizeHint() const
+{
+    QSize baseHint = ElidingLabel::minimumSizeHint();
+    baseHint.setHeight(qMax(baseHint.height(), iconSize));
+    return baseHint;
+}
+
 static Utils::Theme::Color fillColorForType(InfoLabel::InfoType type)
 {
     using namespace Utils;

src/libs/utils/infolabel.h

@@ -51,6 +51,7 @@ public:
     void setType(InfoType type);
     bool filled() const;
     void setFilled(bool filled);
+    QSize minimumSizeHint() const override;
 
 protected:
     void paintEvent(QPaintEvent *event) override;

tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp

@@ -24,6 +24,7 @@
 ****************************************************************************/
 
 #include <QApplication>
+#include <QFormLayout>
 #include <QLayout>
 #include <QMessageBox>
 #include <QSettings>
@@ -94,6 +95,13 @@ int main(int argc, char *argv[])
     stretching->setFilled(true);
     mainLayout->addWidget(stretching, 2);
 
+    auto formLayout = new QFormLayout;
+    auto multiLine = new Utils::InfoLabel("Multi line<br/>in<br/>QFormLayout");
+    multiLine->setElideMode(Qt::ElideNone);
+    multiLine->setFilled(true);
+    formLayout->addRow("Label:", multiLine);
+    mainLayout->addLayout(formLayout);
+
     const QString lorem =
             "Lorem ipsum dolor sit amet, consectetur adipisici elit, sed eiusmod tempor incidunt "
             "ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation "